Novel magnetic latching relay

Abstract

The utility model discloses a novel magnetic latching relay. The novel magnetic latching relay is characterized in that a housing is provided with an accommodating cavity; the first static contact piece is accommodated in the accommodating cavity; the second static contact piece is accommodated in the accommodating cavity; one end of the moving contact assembly is electrically connected with the first static contact piece, and the other end of the moving contact assembly is driven by the magnetic circuit mechanism to move towards the second static contact piece. A first magnet yoke is fixed on the movable contact assembly; the second magnet yoke is contained in the containing cavity, and when the movable contact assembly is electrically connected with the second static contact piece, the second magnet yoke is attached to the first magnet yoke; one end of the movable contact assembly is connected with the first static contact piece, the other end of the movable contact assembly forms seesaw type driving and forms an electrical connection effect with the second static contact piece, and in the electrifying process of the first magnet yoke and the second magnet yoke, the first magnet yoke can generate a magnetic field so that the first magnet yoke and the second magnet yoke can be attracted. The electrical connection stability between the moving contact assembly and the second static contact piece is improved, and the contact repulsive force is prevented from influencing the on-off effect when a short circuit occurs.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay technical field, concretely relates to a novel magnetic latching relay. BACKGROUND

[0002] Magnetic latching relay, to circuit plays automatic switching on and switching off effect. The existing magnetic latching relay in the use process, the movable contact and static contact piece between the contact repulsion. When the current sharply rises, for example, short circuit, contact repulsion can become very big, easy to separate the movable contact and static contact piece. SUMMARY

[0003] Therefore, the utility model solves the technical problem in how to overcome the contact repulsion. For this purpose, a novel magnetic latching relay, comprising:

[0004] The shell is equipped with the accommodation cavity;

[0005] The first static contact piece is housed in the accommodation cavity;

[0006] The second static contact piece is housed in the accommodation cavity;

[0007] The movable contact assembly one end is electrically connected with the first static contact piece, and the other end of the movable contact assembly moves towards the second static contact piece under the drive of the magnetic circuit mechanism;The movable contact assembly is fixed with the first magnetic yoke;

[0008] The second magnetic yoke is housed in the accommodation cavity, and when the movable contact assembly is electrically connected with the second static contact piece, the second magnetic yoke is attached with the first magnetic yoke.

[0009] The first magnetic yoke and the movable contact assembly are riveted fixed.

[0010] The movable contact assembly includes a spring piece, one end of the spring piece is connected with the first magnetic yoke, and the other end of the spring piece is matched with the magnetic circuit mechanism.

[0011] The movable contact assembly includes at least two movable contact pieces, the movable contact pieces are stacked to form a first connecting portion, a second connecting portion and a raised portion, two ends of the raised portion are connected with the first connecting portion and the second connecting portion respectively, the first connecting portion is electrically connected with the first static contact piece, and the end of the second connecting portion is matched with the second static contact piece.

[0012] When the raised portion protrudes towards the side of the magnetic circuit mechanism, the first connecting portion and the second connecting portion form spatial dislocation.

[0013] When the raised portion protrudes towards the side of the magnetic circuit mechanism in the opposite direction, the first connecting portion and the second connecting portion are located in the same horizontal plane.

[0014] The shell is provided with at least two heat dissipation holes, one end of the first heat dissipation fin is electrically connected with the first static contact piece, and the other end of the first heat dissipation fin extends to one of the heat dissipation holes; one end of the second heat dissipation fin is electrically connected with the second static contact piece, and the other end of the second heat dissipation fin extends to the other heat dissipation hole.

[0015] The first heat dissipation fin comprises a first pin and a second pin, the first pin and the second pin extend to the same heat dissipation hole and are correspondingly arranged; the second heat dissipation fin comprises a third pin and a fourth pin, the third pin and the fourth pin extend to the same heat dissipation hole and are correspondingly arranged.

[0016] The magnetic circuit mechanism comprises a coil assembly, an armature assembly and a connecting structure, the coil assembly and the armature assembly cooperate to generate an oscillation force for driving the push rod to move; the connecting structure comprises a first transmission groove arranged at one end of the push rod and a connecting piece arranged on the armature assembly and penetrating into the first transmission groove, and a connecting shaft is formed on the connecting piece and slidably connected in the first transmission groove.

[0017] The accommodating cavity is provided with a guide rib, the guide rib is provided with a guide surface, and the push rod slides in close contact with the guide surface.

[0018] The technical scheme of the utility model has the following advantages:

[0019] 1. The utility model provides a novel magnetic latching relay, the structure, one end of the moving contact assembly is connected with the first static contact piece, the other end of the moving contact assembly forms a cantilever type drive, forms the electrical connection effect between the second static contact piece, the first magnetic yoke and the second magnetic yoke in the process of electrification, the first magnetic yoke generates a magnetic field, so that the first magnetic yoke and the second magnetic yoke attract, improve the electrical connection stability between the moving contact assembly and the second static contact piece, prevent the contact repulsion from affecting the on-off effect when short circuit occurs.

[0020] 2. The utility model provides a novel magnetic latching relay, riveting fixed mode improves the connecting strength between the moving contact assembly and the first magnetic yoke. In addition, other fixing modes, such as screw connection or buckle connection, can also be used.

[0021] 3. The utility model provides a novel magnetic latching relay, the setting of the elastic sheet better realizes the cooperation between the moving contact assembly and the push rod.

[0022] 4. The utility model provides a novel magnetic latching relay, and the moving contact assembly adopts the structure, forms the shunt and reduces the contact resistance, and better heat dissipation effect can be achieved.

[0023] 5. The utility model provides a novel magnetic latching relay, and the first heat dissipation fin and the second heat dissipation fin better realize the heat dissipation effect.

[0024] 6. The utility model provides a novel magnetic latching relay, and the structure of the first heat dissipation fin and the second heat dissipation fin increases the heat dissipation area and better realizes the heat dissipation effect.

[0025] 7. The utility model provides a novel magnetic latching relay, and the setting of the guide rib plays a guiding effect and makes the push rod slide more smoothly. DRAWINGS

[0026] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed in the specific embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0027] Figure 1 The structure schematic diagram of the novel magnetic latching relay provided by the utility model is shown in the figure.

[0028] Figure 2 The partial structure schematic diagram of the novel magnetic latching relay provided by the utility model is shown in the figure.

[0029] Figure 3 The side view of the utility model is shown in the figure. Figure 2

[0030] Figure 4 The structure schematic diagram of the novel magnetic latching relay provided by the utility model is shown in the figure.

[0031] Mark explanation:

[0032] ​11, housing; 12, first static contact; 13, second static contact; 14, first magnetic yoke; 15, second magnetic yoke; 16, elastic sheet; 17, moving contact; 18, push rod; 19, first heat sink; 20, second heat sink; 21, coil assembly; 22, armature assembly; 23, connecting piece; 24, connecting shaft; 25, shield; 111, accommodating cavity; 112, fixing groove; 113, guide rib; 114, heat dissipation hole I; 115, heat dissipation hole II; 116, heat dissipation hole III; 131, static contact; 171, first connecting part; 172, second connecting part; 173, raised part; 181, first transmission groove; 182, second transmission groove; 191, first pin; 192, second pin; 201, third pin; 202, fourth pin; 1721, moving contact. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0034] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0037] Example 1

[0038] This embodiment provides a novel magnetic latching relay, as shown in the attached figure. Figures 1-3 As shown, it includes:

[0039] The housing 11 has a receiving cavity 111.

[0040] The first stationary contact 12 is housed in the receiving cavity 111. In this embodiment, part of the first stationary contact 12 is located inside the receiving cavity 111, and the remaining part of the first stationary contact 12 extends vertically downward to the outside, so as to form an electrical connection with the external circuit.

[0041] The second stationary contact 13 is housed in the receiving cavity 111. In this embodiment, part of the second stationary contact 13 is located inside the receiving cavity 111, and the remaining part of the second stationary contact 13 extends vertically downward to the outside to form an electrical connection with an external circuit. In this embodiment, the first stationary contact 12 is located on the right side below the receiving cavity 111, and the second stationary contact 13 is located on the left side below the receiving cavity 111, with the two correspondingly arranged.

[0042] A movable contact assembly is used to connect the first stationary contact piece 12 and the second stationary contact piece 13, realizing an electrical connection between them. In this embodiment, one end of the movable contact assembly is electrically connected to the first stationary contact piece 12, and the other end moves towards the second stationary contact piece 13 under the drive of the magnetic circuit mechanism. When the magnetic circuit mechanism is working, it drives the movable contact assembly to move, achieving an electrical connection between the other end of the movable contact assembly and the second stationary contact piece 13. A first magnetic yoke 14 is fixed to the movable contact assembly.

[0043] The second magnetic yoke 15 is housed in the receiving cavity 111. When the moving contact assembly is electrically connected to the second stationary contact piece 13, the second magnetic yoke 15 is in contact with the first magnetic yoke 14. In this embodiment, the second magnetic yoke 15 is located below the moving contact assembly.

[0044] In this structure, one end of the moving contact component is connected to the first stationary contact piece 12, and the other end of the moving contact component forms a rocker-type drive, creating an electrical connection with the second stationary contact piece 13. During energization, the first magnetic yoke 14 generates a magnetic field, causing the first magnetic yoke 14 and the second magnetic yoke 15 to attract each other, improving the electrical connection stability between the moving contact component and the second stationary contact piece 13 and preventing contact repulsion from affecting the switching effect in the event of a short circuit. In this embodiment, the distance between the moving contact component and the second stationary contact piece 13 can also be increased to increase the opening distance.

[0045] Specifically, as shown in the attached document Figures 2-3 As shown, the first magnetic yoke 14 and the moving contact assembly are fixed by riveting. Riveting increases the connection strength between the moving contact assembly and the first magnetic yoke 14. Alternatively, other fixing methods can be used, such as screw connections, snap-fit ​​connections, or welding.

[0046] Specifically, as shown in the accompanying drawings, Figures 2-3 The accommodating cavity 111 is provided with a fixing groove 112, and the second magnetic yoke 15 is fixed in the fixing groove 112. The second magnetic yoke 15 is located between the first static contact piece 12 and the second static contact piece 13, and the second magnetic yoke 15 is not directly electrically connected with the first static contact piece 12 and the second static contact piece 13.

[0047] Specifically, as shown in the accompanying drawings, Figures 2-3 The moving contact assembly includes a spring piece 16, one end of the spring piece 16 is connected with the first magnetic yoke 14, and the other end of the spring piece 16 cooperates with the magnetic circuit mechanism. The arrangement of the spring piece 16 better realizes the cooperation between the moving contact assembly and the push rod 18. In the embodiment, the lower end of the push rod 18 is provided with a second transmission groove 182, and the end of the moving contact assembly cooperating with the second static contact piece 13 extends into the second transmission groove 182, and the other end of the spring piece 16 abuts against the side wall of the second transmission groove 182.

[0048] Specifically, as shown in the accompanying drawings, Figures 2-3 The moving contact assembly includes at least two moving contact pieces 17, and the number of the moving contact pieces 17 can be adjusted according to actual needs, which can be two, three, four or more. In the embodiment, four moving contact pieces 17 are taken as an example. The four moving contact pieces 17 are stacked to form a first connecting part 171, a second connecting part 172 and a raised part 173. The two ends of the raised part 173 are connected with the first connecting part 171 and the second connecting part 172 respectively. The first connecting part 171 is electrically connected with the first static contact piece 12, and the first connecting part 171 is fixedly connected with the first static contact piece 12 by riveting. The end of the second connecting part 172 cooperates with the second static contact piece 13. The moving contact assembly adopts the structure, which forms shunt to reduce contact resistance and can better achieve heat dissipation effect. The raised part 173 forms an overtravel effect, which better realizes the electrical connection effect between the moving contact assembly and the second static contact piece 13. In order to improve the electrical connection effect between the two, the second connecting part 172 is provided with a moving contact head 1721, the second static contact piece 13 is provided with a static contact head 131, the moving contact head 1721 cooperates with the static contact head 131 to form the electrical connection effect.

[0049] Specifically, as shown in the accompanying drawings, Figures 2-3 When the raised part 173 protrudes towards the side of the magnetic circuit mechanism, in the embodiment, the magnetic circuit mechanism is located in the upper region of the accommodating cavity 111, that is, the raised part 173 protrudes upwards. At this time, the first connecting part 171 and the second connecting part 172 form a spatial misalignment. Specifically, the first connecting part 171 is located close to the bottom surface of the shell 11, and the second connecting part 172 is located above, although they are arranged in parallel, but are located on different horizontal planes, so as to form a spatial misalignment, specifically a misalignment in the vertical direction.

[0050] Specifically, as shown in the accompanying drawings,Figures 2-3 As shown, the first heat sink 19 and the second heat sink 20 are further included, and the shell 11 is provided with at least two heat dissipation holes, the number of which can be adjusted according to actual needs. In this embodiment, four heat dissipation holes are taken as an example for description, and the heat dissipation hole cooperating with the first heat sink 19 is heat dissipation hole I 114, the heat dissipation hole cooperating with the second heat sink 20 is heat dissipation hole II 115, and the other two heat dissipation holes are heat dissipation hole III 116, and the four heat dissipation holes all penetrate through the front and back of the shell 11. One end of the first heat sink 19 is electrically connected with the first static contact 12, and the other end of the first heat sink 19 extends to the heat dissipation hole I 114. One end of the second heat sink 20 is electrically connected with the second static contact 13, and the other end of the second heat sink 20 extends to the heat dissipation hole II 115. The first heat sink 19 and the second heat sink 20 better realize the heat dissipation effect. At this time, the first heat sink 19 and the second heat sink 20 are independently arranged, and the two are in direct electrical connection.

[0051] Specifically, as shown in the accompanying drawings, Figures 2-3 As shown, the first heat sink 19 includes a first pin 191 and a second pin 192, the first pin 191 and the second pin 192 extend to the heat dissipation hole I 114, and the two are correspondingly arranged, which specifically means that the first pin 191 extends to abut against the left side wall of the heat dissipation hole I 114, and the second pin 192 abuts against the right side wall of the heat dissipation hole I 114, forming a left-right corresponding arrangement and increasing the heat dissipation area. The second heat sink 20 includes a third pin 201 and a fourth pin 202, the third pin 201 and the fourth pin 202 extend to the heat dissipation hole II 115, and the two are correspondingly arranged, which specifically means that the third pin 201 abuts against the left side wall of the heat dissipation hole II 115, and the fourth pin 202 extends to abut against the right side wall of the heat dissipation hole II 115. The structure of the first heat sink 19 and the second heat sink 20 increases the heat dissipation area and better realizes the heat dissipation effect. The heat dissipation hole III 116 plays a role in air exchange between the accommodating cavity 111 and the outside, improving the heat dissipation effect.

[0052] Specifically, as shown in the accompanying drawings, Figures 2-3 As shown, the first heat sink 19 and the second heat sink 20 are further included, and the shell 11 is provided with at least two heat dissipation holes, the number of which can be adjusted according to actual needs. In this embodiment, four heat dissipation holes are taken as an example for description, and the heat dissipation hole cooperating with the first heat sink 19 is heat dissipation hole I 114, the heat dissipation hole cooperating with the second heat sink 20 is heat dissipation hole II 115, and the other two heat dissipation holes are heat dissipation hole III 116, and the four heat dissipation holes all penetrate through the front and back of the shell 11. One end of the first heat sink 19 is electrically connected with the first static contact 12, and the other end of the first heat sink 19 extends to the heat dissipation hole I 114. One end of the second heat sink 20 is electrically connected with the second static contact 13, and the other end of the second heat sink 20 extends to the heat dissipation hole II 115. The first heat sink 19 and the second heat sink 20 better realize the heat dissipation effect. At this time, the first heat sink 19 and the second heat sink 20 are independently arranged, and the two are in direct electrical connection.

[0053] Specifically, as shown in the accompanying drawings, Figure 1As shown, the accommodating cavity 111 is provided with a guide rib 113, which is provided with a guide surface, and the push rod 18 slides in close contact with the guide surface. The guide rib 113 has a guiding effect, so that the push rod 18 slides more smoothly.

[0054] Specifically, as shown in the accompanying drawings, Figure 4 As shown, the shell 11 is further fixed with a shielding cover 25. The shielding cover 25 has a signal shielding effect.

[0055] Embodiment 2

[0056] The embodiment provides a novel magnetic latching relay, as shown in the accompanying drawings, ​ As shown, the difference between the embodiment 2 and the embodiment 1 is that the protruding part 173 in the embodiment 2 protrudes downward, that is, in the opposite direction of the magnetic circuit mechanism side. At this time, the first connecting part 171 and the second connecting part 172 are located on the same horizontal plane.

[0057] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation to the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A new type of magnetic latching relay characterized in that, The utility model relates to a shell (11) is equipped with containing cavity (111), first static contact (12) is contained in containing cavity (111), second static contact (13) is contained in containing cavity (111), movable contact subassembly one end is electrically connected with first static contact (12), movable contact subassembly other end is driven under the magnetic circuit mechanism and moves towards second static contact (13), movable contact subassembly is fixed with first magnetic yoke (14), second magnetic yoke (15) is contained in containing cavity (111), when movable contact subassembly is electrically connected with second static contact (13), second magnetic yoke (15) is pasted with first magnetic yoke (14). First magnetic yoke (14) and movable contact subassembly are riveted fixed. Movable contact subassembly includes elastic sheet (16), one end of elastic sheet (16) is connected with first magnetic yoke (14), and the other end of elastic sheet (16) is matched with the magnetic circuit mechanism. Movable contact subassembly includes at least two movable contact (17), and movable contact (17) is stacked to form first connecting part (171), second connecting part (172) and hump part (173), two ends of hump part (173) are connected with first connecting part (171) and second connecting part (172) respectively, first connecting part (171) is electrically connected with first static contact (12), and the end of second connecting part (172) is matched with second static contact (13). When hump part (173) protrudes towards the side of magnetic circuit mechanism, first connecting part (171) and second connecting part (172) form spatial dislocation. When hump part (173) protrudes towards the side of magnetic circuit mechanism in the opposite direction, first connecting part (171) and second connecting part (172) are located in the same horizontal plane.

2. The novel magnetic latching relay according to claim 1, characterized in that, First fin (19) and second fin (20) are further included, the shell (11) is equipped with at least two heat dissipation holes, one end of first fin (19) is electrically connected with first static contact (12), and the other end of first fin (19) extends to one of the heat dissipation holes, one end of second fin (20) is electrically connected with second static contact (13), and the other end of second fin (20) extends to another heat dissipation hole.

3. The novel magnetic latching relay according to claim 1, characterized in that, First fin (19) includes first pin (191) and second pin (192), first pin (191) and second pin (192) extend to the same heat dissipation hole, and they are correspondingly arranged, third pin (201) and fourth pin (202) are included in second fin (20), third pin (201) and fourth pin (202) extend to the same heat dissipation hole, and they are correspondingly arranged.

4. The novel magnetic latching relay according to claim 1, characterized in that, ​ 5. The novel magnetic latching relay according to claim 4, characterized in that ​ 6. The novel magnetic latching relay of claim 4, wherein, ​ 7. The novel magnetic latching relay according to claim 1, wherein, ​ 8. The novel magnetic latching relay according to claim 7, characterized in that ​ 9. The novel magnetic latching relay according to claim 1, characterized in that, Also include push rod (18), the magnetic circuit mechanism includes coil assembly (21), armature assembly (22), connecting structure, the coil assembly (21) is matched with the armature assembly (22) and generates the swing force of driving the push rod (18) movement;The connecting structure includes the first transmission groove (181) that is arranged in one end of the push rod (18), and the connecting piece (23) that is arranged on the armature assembly (22) and is penetrated into the first transmission groove (181), the connecting piece (23) is formed with the connecting shaft (24) that is slidably connected in the first transmission groove (181).

10. The new type of magnetic latching relay according to claim 9, characterized in that The accommodating cavity (111) is provided with a guide rib (113) having a guide surface, and the push rod (18) slides in close contact with the guide surface.

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