CN218996611U - Linkage piece and leakage protector - Google Patents

Abstract

The utility model discloses a linkage piece and an electric leakage protector, wherein the electric leakage protector comprises a shell component, a button, a hook plate and an electromagnet, and the hook plate is movably hooked with the button; the linkage piece comprises a body, a first push rod and a second push rod; the body is provided with a boss and a rotating shaft, the boss is suitable for being sleeved with an elastic piece which is elastically abutted with the shell assembly, and the rotating shaft is suitable for being in pivot connection with the shell assembly; the first push rod is arranged on the body and is suitable for being in movable fit with the hook plate; the second push rod is arranged on the body and is suitable for being movably matched with the movable iron core of the electromagnet. The utility model provides a linkage piece, which realizes that the electromagnet maintains the hooking state between the hook plate and the button with low power consumption through smaller suction force by the conversion function of the linkage piece between the electromagnet and the hook plate, ensures that the temperature rise of the electromagnet is at a lower value and meets the standard requirement. Meanwhile, the electromagnet of the leakage protector can have more margin to meet high-requirement anti-seismic environment.

Description

Linkage piece and leakage protector

Technical Field

The utility model relates to the technical field of electromagnetic switches, in particular to a linkage piece and a leakage protector.

Background

The leakage protector, called leakage switch for short, is mainly used for protecting the life of life with fatal danger when the equipment has leakage fault, has overload and short-circuit protection function, can be used for protecting the overload and short circuit of the circuit or motor, and can also be used for starting the circuit without frequent conversion under normal condition.

The existing leakage protector comprises a leakage detection device, a fixed contact, a reset button, a movable contact frame, a hook plate, a movable contact frame spring, a coil assembly and the like, wherein the hook plate is hinged on the movable contact frame and can form a hasp with the reset button. The coil assembly comprises an iron core, a coil and an iron core spring, wherein the hook plate is directly matched with the iron core, a U-shaped opening penetrating through the hook plate is formed in the hook plate, an axial groove matched with the U-shaped opening is formed in the iron core, a blocking flange is formed on one side of the axial groove, facing the iron core spring, of the axial groove, the hook plate can be driven to rotate when the iron core acts, and the hook plate can not drive the iron core to act due to the action of the U-shaped opening when the hook plate moves upwards along with a reset button.

However, the hook plate and the iron core of the leakage protector are directly matched, so that the iron core of the electromagnet needs larger suction force to maintain the connection state between the hook plate and the button, the power consumption of the coil assembly is larger, and the coil temperature rise is not reduced.

Disclosure of Invention

The utility model mainly aims to provide a linkage piece and a leakage protector, which aim to realize that an electromagnet maintains a hooking state between a hook plate and a button with low power consumption through small suction and ensure that the temperature rise of the electromagnet is at a low value.

In order to achieve the above object, the present utility model provides a linkage member for an earth leakage protector, the earth leakage protector includes a housing assembly, a button disposed on the housing assembly, and a hook plate and an electromagnet disposed in the housing assembly, the hook plate is movably hooked with the button, the linkage member includes:

the body is provided with a boss and a rotating shaft, the boss is suitable for being sleeved with an elastic piece which is elastically abutted with the shell assembly, and the rotating shaft is suitable for being in pivot connection with the shell assembly;

the first push rod is arranged on the body and is suitable for being in movable fit with the hook plate; and

the second push rod is arranged on the body and is suitable for being movably matched with the movable iron core of the electromagnet.

Optionally, the arm length of the second push rod is greater than the arm length of the first push rod.

Optionally, the first push rod has a first driving end adapted to abut against the side rib of the hook plate, and the first driving end is provided with a rounded corner.

Optionally, the second push rod is provided with a second driving end which is suitable for being clamped with the movable iron core of the electromagnet, and the second driving end is provided with an open slot.

Optionally, a first abutting surface and a second abutting surface connected with the first abutting surface are arranged on the groove wall of the open groove;

the first abutting surface is used for abutting against the movable iron core when the leakage protector is in a disconnected state;

the second abutting surface is used for abutting against the movable iron core when the leakage protector is in an on state.

Optionally, the first abutting surface is located inside the open slot, and the first abutting surface is suitable for vertically abutting against the movable iron core; the second abutting surface is positioned on the outer side of the open slot and is suitable for vertically abutting against the movable iron core.

Optionally, the linkage member further includes an indication rod, where the indication rod is disposed on the body and is adapted to extend out of the housing assembly, so as to indicate that the movable contact and the stationary contact of the leakage protector are in an on state or an off state.

Optionally, the indication rod, the body, the first push rod and the second push rod are integrally formed.

Optionally, the indication rod and the first push rod are disposed on the body in a back-to-back manner.

In order to achieve the above object, the present utility model also proposes a leakage protector including a linkage member as described above, the linkage member including:

the body is provided with a boss and a rotating shaft, the boss is suitable for being sleeved with an elastic piece which is elastically abutted with the shell assembly, and the rotating shaft is suitable for being in pivot connection with the shell assembly;

the first push rod is arranged on the body and is suitable for being in movable fit with the hook plate; and

the second push rod is arranged on the body and is suitable for being movably matched with the movable iron core of the electromagnet.

In the technical scheme of the utility model, the linkage piece comprises a body, a first push rod and a second push rod; the body is provided with a boss and a rotating shaft, the boss is suitable for being sleeved with an elastic piece which is elastically abutted with the shell assembly, and the rotating shaft is suitable for being in pivot connection with the shell assembly; the first push rod is arranged on the body and is suitable for being in movable fit with the hook plate; the second push rod is arranged on the body and is suitable for being movably matched with the movable iron core of the electromagnet. It can be understood that through the conversion effect of the linkage piece between the electromagnet and the hook plate, the force is saved, the hook state between the hook plate and the button is maintained by the electromagnet through small suction force with low power consumption, the temperature rise of the electromagnet is ensured to be at a low value, and the standard requirement is met. Meanwhile, the electromagnet of the leakage protector can have more margin to meet high-requirement anti-seismic environment.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an embodiment of a linkage of the present utility model;

FIG. 2 is a cross-sectional view of an embodiment of the earth leakage protector of the present utility model;

fig. 3 is a schematic diagram of a circuit in an on state in an embodiment of the leakage protector according to the present utility model.

Reference numerals illustrate:

1. a leakage protector; 100. a linkage member; 101. a housing assembly; 102. a button; 103. a hook plate; 104. an electromagnet; 10. a body; 20. a first push rod; 30. a second push rod; 40. an indication rod; 11. a boss; 12. a rotating shaft; 201. round corners; 30a, an open slot; 301. a first abutment surface; 302. a second abutment surface; a. a movable contact; b. and a stationary contact.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a linkage piece.

Referring to fig. 1 to 3, in an embodiment of the present utility model, the linkage 100 is applied to a leakage protector 1, the leakage protector 1 includes a housing assembly 101, a button 102 provided on the housing assembly 101, and a hook plate 103 and an electromagnet 104 provided in the housing assembly 101, the hook plate 103 is movably hooked with the button 102, and the electromagnet 104 includes a movable iron core and a yoke movably matched with the movable iron core; the linkage 100 includes a body 10, a first push rod 20, and a second push rod 30; the body 10 is provided with a boss 11 and a rotating shaft 12, the boss 11 is suitable for being sleeved with an elastic piece which is elastically abutted with the shell assembly 101, and the rotating shaft 12 is suitable for being pivotally connected with the shell assembly 101; the first push rod 20 is arranged on the body 10, and the first push rod 20 is suitable for being movably matched with the hook plate 103; the second push rod 30 is disposed on the body 10, and the second push rod 30 is adapted to be movably matched with the movable iron core of the electromagnet 104.

The linkage 100, the hook plate 103, the electromagnet 104 and the like form a linkage mechanism, and the linkage 100 plays a role in transferring force transferred between the electromagnet 104 and the hook plate 103.

In this embodiment, the body 10, the first push rod 20 and the second push rod 30 may be made of insulating materials such as plastic, and the materials may be the same or different, which is not limited herein. The body 10, the first push rod 20 and the second push rod 30 may be manufactured by integral molding, or may be in a split structure, and assembled together by clamping, bonding or screwing.

The main structure of the linkage 100 (including the body 10, the first push rod 20, and the second push rod 30, excluding the boss 11, the shaft 12, and the indicator lever 40 described below) may be in a V-shaped plate or bar shape, or in an L-shaped plate or bar shape, so as to facilitate assembly and save effort as much as possible.

It should be noted that, in order to ensure that the trip torque exists between the hook plate 103 and the button 102 of the leakage protector 1 and that the button 102 is not separated from the hook plate 103, the electromagnet 104 needs to provide a maintenance torque not less than the trip torque through the linkage 100. However, if the maintaining force of the maintaining torque is too large, the power consumption of the electromagnet 104 is too high, the temperature rise is increased, and the standard temperature rise requirement cannot be met. According to the utility model, the linkage piece 100 plays a role in conversion between the electromagnet 104 and the hook plate 103, so that the electromagnet 104 maintains the hook state between the hook plate 103 and the button 102 with low power consumption through smaller maintenance suction, the temperature rise of the electromagnet 104 is ensured to be at a lower value, and the standard requirement is met. At the same time, the electromagnet 104 can have more margin to meet the high-demand anti-seismic environment.

When the electromagnet 104 is in the attraction state, the movable iron core of the electromagnet 104 is locked on the second push rod 30, the hook plate 103 is not separated from the button 102 after being hooked by the first push rod 20 of the linkage 100, and the circuit of the electromagnetic switch is kept on. When the electromagnet 104 is in a released state, the movable iron core cannot maintain the locking of the linkage 100, the linkage 100 cannot maintain the hooking state between the button 102 and the hook plate 103 under the action of the movable contact frame spring of the leakage protector 1, and the two are separated, at this time, the movable contact a arranged on the movable contact frame is separated from the stationary contact b arranged on the base, and the circuit of the electromagnetic switch is disconnected.

Referring to fig. 1, in an embodiment, the moment arm length of the second pushrod 30 may be greater than the moment arm length of the first pushrod 20. In this way, the holding suction force of the electromagnet 104 can be further reduced, so that it can maintain the hooked state between the hook plate 103 and the button 102 with lower power consumption, which is favorable for the reduction of the coil temperature rise, while also ensuring the stability of the circuit on.

To further enhance electrical stability and safety, referring to fig. 1, in one embodiment, the first push rod 20 has a first drive end adapted to abut the side ribs of the hook plate 103, which may be provided with rounded corners 201. In this way, the first driving end of the first push rod 20 can always abut against the side rib of the hook plate 103 in the attraction state of the electromagnet 104, so that the movable contact a and the stationary contact b can be more stably connected.

Referring to fig. 1, in one embodiment, the second push rod 30 has a second driving end adapted to be snapped into engagement with the plunger of the electromagnet 104, the second driving end being provided with an open slot 30a.

In the present embodiment, the groove wall of the open groove 30a is provided with a first contact surface 301 and a second contact surface 302 connected to the first contact surface 301; a first contact surface 301 for contacting the movable core of the electromagnet 104 when the earth leakage protector 1 is in the off state; the second contact surface 302 is configured to contact the moving core of the electromagnet 104 when the earth leakage protector 1 is in the on state.

Wherein the first contact surface 301 is located inside the open slot 30a, and the first contact surface 301 is adapted to vertically contact with the movable iron core; the second contact surface 302 is located outside the open slot 30a, and the second contact surface 302 is adapted to vertically contact the movable core.

It can be understood that by providing the open slot 30a at the second driving end of the second push rod 30, and providing the first abutment surface 301 and the second abutment surface 302 on the inner wall of the open slot 30a, the switching of the movable iron core between the engaging state and the releasing state is achieved, and further, the switching of the movable contact a and the stationary contact b between the on position and the off position is achieved. Meanwhile, the linkage piece 100 is arranged to convert force between the electromagnet 104 and the hook plate 103, so that the movable contact a and the fixed contact b can be quickly connected with a certain contact pressure, the phenomenon that the existing switch is poor in connection and potential safety hazards are generated due to slow operation can be eliminated, and the safety of electricity consumption is greatly improved.

In order to achieve the function of prompting the user of the working state of the earth leakage protector 1 to improve the convenience of use, referring to fig. 1, in an embodiment, the linkage member 100 may further include an indication rod 40, where the indication rod 40 is disposed on the body 10 and adapted to extend out of the housing assembly 101, so as to be used for indicating that the movable contact a and the stationary contact b of the earth leakage protector 1 are in the on state or the off state.

In this embodiment, the indication rod 40, the body 10, the first push rod 20 and the second push rod 30 are integrally formed. The indication rod 40 may be disposed on the body 10 opposite to the first push rod 20. Thus, the number of parts can be reduced, the cost can be saved, and the convenience in assembling the earth leakage protector 1 can be improved.

It should be noted that, when the leakage protector 1 is assembled, the linkage 100 may be disposed in a cavity between the hook plate 103 and the electromagnet 104, so as to make the structure compact, thereby being beneficial to miniaturization of products and reducing production cost.

Referring to fig. 2 and 3, the present utility model also proposes a leakage protector 1, the leakage protector 1 includes a linkage 100, and the specific structure of the linkage 100 refers to the above embodiment, and since the leakage protector 1 according to the present utility model includes all the solutions of all the embodiments of the linkage 100, at least the same technical effects as those of the linkage 100 are not described herein.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. The utility model provides a linkage, is applied to earth leakage protector, earth leakage protector includes the casing subassembly, locates button on the casing subassembly and locate hook plate and electro-magnet in the casing subassembly, the hook plate with button activity hook joint, its characterized in that, the linkage includes:

the body is provided with a boss and a rotating shaft, the boss is suitable for being sleeved with an elastic piece which is elastically abutted with the shell assembly, and the rotating shaft is suitable for being in pivot connection with the shell assembly;

the first push rod is arranged on the body and is suitable for being in movable fit with the hook plate; and

the second push rod is arranged on the body and is suitable for being movably matched with the movable iron core of the electromagnet.

2. The linkage of claim 1 wherein the arm length of the second pushrod is greater than the arm length of the first pushrod.

3. The linkage of claim 1 wherein the first push rod has a first drive end adapted to abut the side bars of the hook plate, the first drive end being provided with rounded corners.

4. The linkage of claim 1 wherein the second push rod has a second drive end adapted to snap-fit with the plunger of the electromagnet, the second drive end being provided with an open slot.

5. The linkage of claim 4 wherein the walls of the open slot are provided with a first abutment surface and a second abutment surface connected to the first abutment surface;

the first abutting surface is used for abutting against the movable iron core when the leakage protector is in a disconnected state;

the second abutting surface is used for abutting against the movable iron core when the leakage protector is in an on state.

6. The linkage of claim 5 wherein said first abutment surface is located inside said open slot, said first abutment surface adapted to vertically abut said plunger; the second abutting surface is positioned on the outer side of the open slot and is suitable for vertically abutting against the movable iron core.

7. The linkage of claim 1, further comprising an indicator lever disposed on the body and adapted to extend out of the housing assembly for indicating whether the movable contact and the stationary contact of the earth leakage protector are in an on state or an off state.

8. The linkage of claim 7 wherein said indicator lever, said body, said first push rod and said second push rod are integrally formed.

9. The linkage of claim 8 wherein the indicator bar is disposed on the body opposite the first push bar.

10. A leakage protector comprising a linkage as claimed in any one of claims 1 to 9.

Images