Large-gap load switch

Abstract

The utility model relates to a large-gap load switch, and belongs to the technical field of electronic control devices. The switch comprises a transmission mechanism, a motor, a microswitch, a static contact assembly, a base, a connecting shaft, a movable contact assembly and a guide rail piece, the motor is connected with the transmission mechanism, the static contact assembly is arranged on the base, the microswitch is arranged on the base, the movable contact assembly is movably arranged on the guide rail piece, and the guide rail piece is arranged on the base. The movable contact assembly is matched with the static contact assembly, the movable contact assembly comprises a movable contact assembly base, a contact elastic piece, an auxiliary elastic piece, a magnetic conductive ring, a movable contact base, movable contacts and a movable spring clamping piece, the movable spring clamping piece, the movable contact base, the magnetic conductive ring, the auxiliary elastic piece, the contact elastic piece and the movable contact assembly base are sequentially connected, and the movable contact base is provided with a plurality of movable contacts. The utility model has the advantages of reasonable structural design, increased contact gap, large transmission torsion and small overall volume, and meets the practical requirements.

Description

Technical Field

[0001] The utility model relates to a load switch, in particular to a large gap load switch, and belongs to the technical field of electronic control devices. Background Art

[0002] A relay is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] In the prior art, if one wants to increase the contact gap stroke, for example, in order to comply with the new standard of the State Grid smart IoT meter that the disconnection distance between the moving and static contacts must be greater than 5.5 mm, then it is necessary to increase the magnetic field strength of the magnetic circuit part and increase the power consumption. In particular, the magnetic circuit part composed of the armature assembly also needs to increase the rotation angle of the armature assembly exponentially. This will cause the magnetic spacing between the armature assembly and the coil assembly to increase, and make it more difficult to attract. In order to ensure that the armature assembly can still be attracted normally when the magnetic spacing increases, it is also necessary to increase the magnetic force of the coil of the magnetic circuit part and the magnetic force of the magnet in the armature assembly. This will increase the volume of the coil of the magnetic circuit part and the volume of the armature assembly, and is not conducive to achieving a miniaturized design.

[0004] Therefore, it is particularly necessary to provide a load switch with a reasonable structural design, which solves the contact gap travel and improves the switching capacity. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a large-gap load switch with reasonable structural design, increased contact gap, large transmission torque and small overall volume.

[0006] The technical solution adopted by the utility model to solve the above problems is: the large gap load switch includes a transmission mechanism, a motor, a micro switch, a static contact assembly, a base, a shaft fixing plate, an armature and a connecting shaft, one side of the transmission mechanism is connected to the shaft fixing plate through the connecting shaft, the other side of the transmission mechanism is connected to the base, the motor is connected to the transmission mechanism, the static contact assembly is installed on the base, and the micro switch is arranged on the base, which is characterized in that: it also includes a moving contact assembly and a guide rail member, the transmission mechanism includes a conversion gear and a fan gear that mesh with each other, a worm is arranged on the motor shaft of the motor, and the worm, the conversion gear and the fan are connected to each other. The movable contact assembly is movably arranged on the guide rail, and the guide rail is arranged on the base. The movable contact assembly matches with the static contact assembly. The movable contact assembly comprises a movable contact assembly base, a contact spring, an auxiliary spring, a magnetic guide ring, a movable contact base, a movable contact and a movable spring clamp. The movable spring clamp, the movable contact base, the magnetic guide ring, the auxiliary spring, the contact spring and the movable contact assembly base are connected in sequence. A plurality of movable contacts are arranged on the movable contact base. A boss is arranged on the movable contact assembly base, and a fixing hole is arranged on the contact spring. The contact spring and the movable contact assembly base are matched with the boss through the fixing hole.

[0007] Preferably, the utility model further comprises a fixed guide rail hole, a first guide rail boss and a second guide rail boss, and the guide rail member is fixed on the base via the fixed guide rail hole, the first guide rail boss and the second guide rail boss.

[0008] Preferably, the utility model further comprises a first static contact lead-out piece and a second static contact lead-out piece, and the first static contact lead-out piece and the second static contact lead-out piece are arranged on the static contact assembly.

[0009] Preferably, the utility model further comprises a moving contact assembly installation groove, the base is provided with the moving contact assembly installation groove, and the moving contact assembly is arranged in the moving contact assembly installation groove.

[0010] Preferably, four moving contacts are arranged on the moving contact base of the utility model.

[0011] Preferably, a motor drive lead-out sheet is welded on the motor of the utility model to play a conductive role.

[0012] Compared with the prior art, the utility model has the following advantages and effects: the overall structural design is reasonable, the contact gap is increased, the transmission torque is large, and it can resist breaking normally when there is micro-welding; the volume of the overall relay is reduced to meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model embodiment of the general assembly disconnection Figure 1 .

[0014] Figure 2This is a schematic diagram of the structure of the utility model embodiment of the general assembly disconnection Figure 2 .

[0015] Figure 3 This is a schematic diagram of the structure of the utility model embodiment of the general assembly closed Figure 1 .

[0016] Figure 4 This is a schematic diagram of the structure of the utility model embodiment of the general assembly closed Figure 2 .

[0017] Figure 5 It is a schematic diagram of the split structure of the moving contact assembly of the embodiment of the utility model.

[0018] Figure 6 It is a structural schematic diagram of an auxiliary spring piece in a moving contact assembly of an embodiment of the utility model.

[0019] Figure 7 It is a schematic diagram of the overall structure of the moving contact assembly of the embodiment of the utility model.

[0020] In the figure: transmission mechanism 1, moving contact assembly 2, motor 3, micro switch 4, static contact assembly 5, base 6, guide rail member 7, shaft fixing plate 8, armature 9; connecting shaft 11, conversion gear 12, sector gear 13, rocker arm 131; moving contact assembly mounting groove 20, moving contact assembly base 21, boss 211, contact spring 22, fixing hole 221, auxiliary spring 23, magnetic guide ring 24, moving contact base 25, moving contact 26, moving spring assembly 27; worm 31, motor drive lead-out sheet 32; push rod 41; static contact lead-out sheet 1 51, static contact lead-out sheet 2 52. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0022] Example

[0023] See also Figures 1 to 7 The large gap load switch of this embodiment includes a transmission mechanism 1, a moving contact assembly 2, a motor 3, a micro switch 4, a static contact assembly 5, a base 6, a guide rail 7, an axis fixing plate 8, and a connecting shaft 11. One side of the transmission mechanism 1 is connected to the axis fixing plate 8 through the connecting shaft 11, and the other side of the transmission mechanism 1 is connected to the base 6. The motor 3 is connected to the transmission mechanism 1, and the static contact assembly 5 is installed on the base 6; the base 6 is provided with a micro switch 4.

[0024] The movable contact assembly 2 in this embodiment is movably disposed on a guide rail member 7 , and the guide rail member 7 is disposed on a base 6 . The movable contact assembly 2 matches the stationary contact assembly 5 .

[0025] The moving contact assembly 2 in this embodiment includes a moving contact assembly base 21, a contact spring 22, an auxiliary spring 23, a magnetic conductive ring 24, a moving contact base 25, a moving contact 26 and a moving spring clamp 27. The moving spring clamp 27, the moving contact base 25, the magnetic conductive ring 24, the auxiliary spring 23, the contact spring 22 and the moving contact assembly base 21 are connected in sequence, and a plurality of moving contacts 26 are arranged on the moving contact base 25.

[0026] The guide rail member 7 in this embodiment is fixed on the base 6 by fixing the guide rail hole 71 , the guide rail boss 1 72 and the guide rail boss 2 73 .

[0027] In this embodiment, a moving contact assembly installation groove 20 is provided on the base 6 , and the moving contact assembly 2 is arranged in the moving contact assembly installation groove 20 .

[0028] The stationary contact assembly 5 in this embodiment is provided with a stationary contact lead-out piece 1 51 and a stationary contact lead-out piece 2 52 .

[0029] In this embodiment, a boss 211 is disposed on the movable contact assembly base 21 , and a fixing hole 221 is disposed on the contact spring 22 . The contact spring 22 and the movable contact assembly base 21 are matched with the boss 211 via the fixing hole 221 .

[0030] In this embodiment, the magnetic conductive ring 24 is riveted to the auxiliary spring sheet 23 , and the movable spring clamp 27 is buckled with the movable contact assembly base 21 .

[0031] In this embodiment, four moving contacts 26 are arranged on the moving contact base 25 .

[0032] The transmission mechanism 1 in this embodiment includes a conversion gear 12 and a sector gear 13 meshing with each other. A worm 31 is provided on the motor shaft of the motor 3. The worm 31, the conversion gear 12 and the sector gear 13 mesh with each other.

[0033] The movable contact assembly 2 in this embodiment is mounted on a contact assembly base 21 .

[0034] The motor 3 in this embodiment is welded with a motor drive lead-out piece 32 to perform a conductive function.

[0035] The working process of the large gap load switch is as follows: (S1) the motor 3 rotates, driving the conversion gear 12 and the fan gear 13 in the transmission mechanism 1 to work, and the rocker rod 131 of the fan gear 13 pulls the moving contact assembly 2 up and down to make the moving contact 26 of the moving contact assembly 2 work (connect or disconnect); (S2) when in the connected state, the magnetic ring 24 in the moving contact assembly 2 maintains a gap with the armature 9, and the static contact lead-out piece 1 51 and the static contact lead-out piece 2 52 are connected; when in the disconnected state, the micro switch 4 pushes the push rod on the micro switch 4 through the moving contact assembly base 21 in the moving contact assembly 2; (S3) when the moving contact assembly 2 works, the moving contact assembly 2 slides in the guide rail member 7, and the guide rail member 7 is fixed by the fixed guide rail hole 71, the guide rail boss 1 72 and the guide rail boss 2 73 on the base 6.

[0036] Through the above description, those skilled in the art can already implement it.

[0037] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the utility model. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the utility model are included in the protection scope of the utility model patent. Technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. A large gap load switch, comprising a transmission mechanism (1), a motor (3), a stationary contact assembly (5) and a base (6), wherein the motor (3) is connected to the transmission mechanism (1), and the stationary contact assembly (5) is mounted on the base (6), characterized in that: The invention also comprises a movable contact assembly (2) and a guide rail member (7), wherein the movable contact assembly (2) is movably arranged on the guide rail member (7), and the guide rail member (7) is arranged on a base (6). The movable contact assembly (2) matches the static contact assembly (5), and the movable contact assembly (2) comprises a movable contact assembly base (21), a contact spring (22), an auxiliary spring (23), a magnetic guide ring (24), a movable contact base (25), a movable contact (26), and a movable spring clamp (27). The movable spring clamp (27), the movable contact base (25), the magnetic guide ring (24), the auxiliary spring (23), the contact spring (22), and the movable contact assembly base (21) are connected in sequence, and a plurality of movable contacts (26) are arranged on the movable contact base (25).

2. The large gap load switch according to claim 1, characterized in that: It also includes a micro switch (4), and the base (6) is provided with the micro switch (4).

3. The large gap load switch according to claim 1, characterized in that: It also comprises a shaft fixing plate (8) and a connecting shaft (11); one side of the transmission mechanism (1) is connected to the shaft fixing plate (8) via the connecting shaft (11); and the other side of the transmission mechanism (1) is connected to the base (6).

4. The large gap load switch according to claim 1, characterized in that: The movable contact assembly base (21) is provided with a boss (211), the contact spring (22) is provided with a fixing hole (221), and the contact spring (22) and the movable contact assembly base (21) are matched with the boss (211) via the fixing hole (221).

5. The large gap load switch according to claim 1, characterized in that: The magnetic conductive ring (24) is riveted to the auxiliary spring sheet (23), and the moving spring clamp (27) is buckled to the moving contact assembly base (21).

6. The large gap load switch according to claim 1, characterized in that: It also comprises a fixed guide rail hole (71), a first guide rail boss (72) and a second guide rail boss (73); the guide rail member (7) is fixed on the base (6) via the fixed guide rail hole (71), the first guide rail boss (72) and the second guide rail boss (73).

7. The large gap load switch according to claim 1 or 3, characterized in that: The transmission mechanism (1) comprises a conversion gear (12) and a sector gear (13) which mesh with each other. A worm (31) is arranged on the motor shaft of the motor (3). The worm (31), the conversion gear (12) and the sector gear (13) mesh with each other.

Images