阅读说明：本技术 一种双动力脱扣器 (Double-power tripper ) 是由 钟建业 程锐 范伟波 李立志 肖建业 张博 谢志鹏 梁升锋 于 2021-08-12 设计创作，主要内容包括：本发明涉及脱扣器技术领域,具体公开了一种双动力脱扣器,该双动力脱扣器包括静触头组件,静触头组件设有两个,均设于支撑座。动触头组件设于支撑座,动触头组件具有与两个静触头组件接触以导通两个静触头组件的合闸位置、与两个静触头组件分离以断开两个静触头组件的分闸位置和与两个静触头组件即将分离的临界位置。磁芯设于支撑座,输入线缆绕设于磁芯且连接至其中一个静触头组件,输出线缆连接于另一个静触头组件；输入线缆的电流大于阈值时,磁芯吸附动触头组件由合闸位置切换至分闸位置。第一弹性件设于动触头组件和支撑座之间,第一弹性件使动触头组件止动于合闸位置或者分闸位置。上述设置提高了动触头组件和静触头组件分离的速度。(The invention relates to the technical field of releases, and particularly discloses a double-power release. The moving contact component is arranged on the supporting seat and is provided with a switching-on position, a switching-off position and a critical position, the switching-on position is in contact with the two static contact components to conduct the two static contact components, the switching-off position is separated from the two static contact components to disconnect the two static contact components, and the critical position is to be separated from the two static contact components. The magnetic core is arranged on the supporting seat, the input cable is wound on the magnetic core and connected to one of the static contact assemblies, and the output cable is connected to the other static contact assembly; when the current of the input cable is larger than the threshold value, the magnetic core adsorption moving contact assembly is switched from the switch-on position to the switch-off position. The first elastic piece is arranged between the movable contact assembly and the supporting seat, and the first elastic piece enables the movable contact assembly to be stopped at a switching-on position or a switching-off position. The arrangement improves the separation speed of the moving contact component and the static contact component.)

1. A dual power trip unit, comprising:

a support base (1);

two static contact assemblies (2) are arranged, and are arranged on the supporting seat (1);

the moving contact assembly (3) is arranged on the supporting seat (1) and is provided with a switching-on position which is contacted with the two fixed contact assemblies (2) to conduct the two fixed contact assemblies (2), a switching-off position which is separated from the two fixed contact assemblies (2) to disconnect the two fixed contact assemblies (2) and a critical position which is about to be separated from the two fixed contact assemblies (2);

the magnetic core (4) is arranged on the supporting seat (1), the input cable (100) is wound on the magnetic core (4) and connected to one of the static contact assemblies (2), and the output cable (200) is connected to the other static contact assembly (2); the magnetic core (4) is configured to attract the movable contact assembly (3) to be switched from the switching-on position to the switching-off position when the current of the input cable (100) is greater than a threshold value;

the movable contact assembly (3) comprises a first elastic piece (34), the first elastic piece (34) is arranged between the movable contact assembly (3) and the supporting seat (1), and the movable contact assembly (3) is stopped at the switching-on position or the switching-off position by the first elastic piece (34).

2. The dual-power release of claim 1, wherein the moving contact assembly (3) comprises a bracket (31) and a connecting rod (32), the bracket (31) is slidably disposed on the supporting base (1) along a first direction, the connecting rod (32) is disposed at one end of the bracket (31), and the connecting rod (32) is simultaneously contacted with the two stationary contact assemblies (2) when the moving contact assembly (3) is located at the switching-on position and the critical position; the two ends of the first elastic piece (34) are respectively connected with the bracket (31) and the supporting seat (1).

3. The dual-power release of claim 2, further comprising a first mounting member and a second mounting member, wherein the first mounting member and the second mounting member are respectively provided with a first mounting groove and a second mounting groove, the first mounting member is hinged with the bracket (31), the second mounting member is hinged with the supporting seat (1), and two ends of the first elastic member (34) are respectively positioned in the first mounting groove and the second mounting groove.

4. The dual-power release of claim 3, further comprising an adjusting member, wherein the supporting base (1) is provided with a strip-shaped groove extending along the first direction, the adjusting member can slide along the strip-shaped groove and can be fixed in the strip-shaped groove, and the second mounting member is hinged to the adjusting member.

5. The dual-power trip unit according to claim 2, wherein the moving contact assembly (3) further comprises a suction member (33), the suction member (33) is provided at the other end of the holder (31), and the suction member (33) can be sucked by the magnetic core (4) around which the input cable (100) is wound.

6. The dual-power release of claim 5, wherein the absorbing member (33) is provided with a screw hole, the other end of the bracket (31) is provided with a screw rod, and the absorbing member (33) and the bracket (31) are screwed through the screw rod and the screw hole.

7. The dual-power trip unit according to any one of claims 1 to 6, wherein the stationary contact assembly (2) comprises a stationary support bar (21), a contact head (22), a second resilient member (23) and a stop (24); the contact head (22) is arranged at one end of the static support rod (21), the static support rod (21) and the stop piece (24) are arranged on the support seat (1), the static support rod (21) is provided with a stop position and a yielding position which can enable the contact head (22) to be connected with the movable contact component (3), the static support rod (21) is abutted against the stop piece (24) when located at the stop position, and the second elastic piece (23) is arranged between the static support rod (21) and the support seat (1) to enable the static support rod (21) to be stopped at the stop position.

8. The dual-power release of claim 7, wherein the other end of the static support rod (21) is hinged to the support base (1), and the two ends of the second elastic member (23) are disposed on the static support rod (21) and the support base (1).

9. The dual-power release of claim 8, wherein the supporting base (1) is provided with a plurality of mounting holes at intervals along the direction of the static supporting rod (21) moving from the yielding position to the stopping position, and the stopping member (24) is selectively inserted into the mounting holes.

10. The dual-power trip unit of claim 7, wherein the end of the contact head (22) in contact with the movable contact assembly (3) is provided with a spherical chamfer.

Technical Field

The invention relates to the technical field of releases, in particular to a double-power release.

Background

The trip unit is a device mechanically coupled to the circuit breaker for releasing the hold-down mechanism and automatically opening the circuit breaker.

The low-voltage miniature circuit breaker is mainly a thermomagnetic trip, which has low manufacturing cost, simple structure and relatively comprehensive protection range, and therefore, the application is particularly wide, but the thermomagnetic trip is indirectly driven to trip no matter whether the thermomagnetic trip or the magnetic trip is thermal trip, namely the action of a main loop is not directly driven by overcurrent or short circuit of current, but the thermomagnetic action is only indirectly controlled by driving a trigger through the pulling force of a spring, so that the mutual matching process needs a certain time delay, although the time is extremely short, the time is not negligible in a short circuit state, the earlier tripping and cutting off the loop has smaller consequences caused by the short circuit, and the damage to the device is smaller.

Disclosure of Invention

The invention aims to provide a double-power release to solve the problem of time delay caused by indirect control of a release process in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a double-power release, which comprises:

a supporting seat;

two static contact assemblies are arranged and are arranged on the supporting seat;

the moving contact assembly is arranged on the supporting seat and is provided with a switching-on position, a switching-off position and a critical position, the switching-on position is in contact with the two fixed contact assemblies to conduct the two fixed contact assemblies, the switching-off position is separated from the two fixed contact assemblies to disconnect the two fixed contact assemblies, and the critical position is to be separated from the two fixed contact assemblies;

the magnetic core is arranged on the supporting seat, the input cable is wound on the magnetic core and connected to one of the static contact assemblies, and the output cable is connected to the other static contact assembly; the magnetic core is configured to attract the movable contact assembly to be switched from the switching-on position to the switching-off position when the current of the input cable is greater than a threshold value;

the moving contact assembly comprises a first elastic piece, the first elastic piece is arranged between the moving contact assembly and the supporting seat, and the first elastic piece enables the moving contact assembly to be stopped at the switching-on position or the switching-off position.

Preferably, the moving contact assembly includes a bracket and a connecting rod, the bracket is slidably disposed on the supporting seat along a first direction, the connecting rod is disposed at one end of the bracket, and when the moving contact assembly is located at the switching-on position and the critical position, the connecting rod is simultaneously contacted with the two static contact assemblies; the two ends of the first elastic piece are respectively connected with the support and the supporting seat.

Preferably, still include first installed part and second installed part, first installed part with the second installed part is equipped with first mounting groove and second mounting groove respectively, first installed part with the support is articulated, the second installed part with the supporting seat is articulated, the both ends of first elastic component are located respectively first mounting groove with in the second mounting groove.

Preferably, still include the regulating part, the supporting seat is equipped with the edge the bar groove that first direction extends, the regulating part can be followed the bar groove slides, and can be fixed in the bar groove, the second installed part articulate in the regulating part.

Preferably, the moving contact assembly further includes an adsorbing member, the adsorbing member is disposed at the other end of the bracket, and the adsorbing member can be adsorbed by the magnetic core around which the input cable is wound.

Preferably, the adsorption part is provided with a screw hole, the other end of the support is provided with a screw rod, and the adsorption part and the support are connected through the screw rod and the screw hole in a threaded manner.

Preferably, the static contact assembly comprises a static support rod, a contact head, a second elastic piece and a stop piece; the contact head is arranged at one end of the static support rod, the static support rod and the stop piece are arranged on the support seat, the static support rod is provided with a stop position and a yielding position which can enable the contact head to be connected with the moving contact component, the static support rod is abutted against the stop piece when being located at the stop position, and the second elastic piece is arranged between the static support rod and the support seat to enable the static support rod to be stopped at the stop position.

Preferably, the other end of the static supporting rod is hinged to the supporting seat, and two ends of the second elastic piece are arranged on the static supporting rod and the supporting seat.

Preferably, the supporting seat is provided with a plurality of mounting holes at intervals along the direction of the movement of the static supporting rod from the yielding position to the stopping position, and the stopping member is selected to be in penetrating connection with the mounting holes.

Preferably, one end of the contact head contacting with the movable contact component is provided with a spherical chamfer.

The invention has the beneficial effects that:

the invention provides a double-power release, which is characterized in that an input cable is wound on a magnetic core and then connected to a static contact component, an output cable is connected to another static contact component, when the current of the input cable is greater than a threshold value, the magnetic core generates larger magnetic force to adsorb a moving contact component to a brake separating position, the magnetic force generated by the matching of the input cable and the magnetic core directly separates the static contact component from the moving contact component, the link that a trigger is adsorbed by magnetic force to release with the moving contact component in the prior art is saved, the static contact component and the moving contact component are separated by a spring, the problem of time delay is solved, and the separation speed of the moving contact component and the static contact component is improved. Meanwhile, the arrangement of the first elastic element enables the moving contact component to apply force to the moving contact component in the process of moving from the critical position to the opening position, the moving contact component driven under the combined action of magnetic force and elastic force rapidly moves to the opening position, and the speed of separating the moving contact component from the static contact component is further increased.

Drawings

Fig. 1 is a schematic structural diagram of a dual-power release in an embodiment of the present invention, in which a moving contact assembly is located at a switching-on position;

fig. 2 is a schematic structural diagram of a dual-power release in an embodiment of the invention, in which a moving contact assembly is located at a critical position;

fig. 3 is a schematic structural diagram of a dual-power release according to an embodiment of the present invention, in which the moving contact assembly is located at a trip position.

In the figure:

100. an input cable; 200. an output cable;

1. a supporting seat;

2. a stationary contact assembly; 21. a stationary support bar; 22. a contact head; 23. a second elastic member; 24. a stopper;

3. a moving contact assembly; 31. a support; 32. a connecting rod; 33. an adsorbing member; 34. a first elastic member; 4. a magnetic core.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

Example one

As shown in fig. 1 to 3, the present embodiment provides a dual-power release, which includes a supporting base 1, a fixed contact assembly 2, a movable contact assembly 3, a magnetic core 4, and a first elastic element 34. Wherein, static contact subassembly 2 are equipped with two, all locate supporting seat 1. The moving contact component 3 is arranged on the supporting seat 1, and the moving contact component 3 is provided with a switching-on position which is contacted with the two fixed contact components 2 to conduct the two fixed contact components 2, a switching-off position which is separated from the two fixed contact components 2 to disconnect the two fixed contact components 2, and a critical position which is about to be separated from the two fixed contact components 2. The magnetic core 4 is arranged on the supporting seat 1, the input cable 100 is wound on the magnetic core 4 and connected to one of the static contact assemblies 2, and the output cable 200 is connected to the other static contact assembly 2; the magnetic core 4 is configured to switch the attracted movable contact assembly 3 from the on-position to the off-position when the current of the input cable 100 is greater than a threshold value. The first elastic element 34 is disposed between the movable contact assembly 3 and the supporting base 1, and the first elastic element 34 stops the movable contact assembly 3 at a switching-on position or a switching-off position. The more the number of turns of the input cable 100 wound around the magnetic core 4 is, the larger the current is, and the larger the magnetic force generated by the magnetic core 4 is.

In the embodiment, the dual-power release is characterized in that the input cable 100 is connected to one static contact assembly 2 after being wound on the magnetic core 4, the output cable 200 is connected to the other static contact assembly 2, when the current of the input cable 100 is greater than a threshold value, the two static contact assemblies 2 are communicated by the movable contact assembly 3, the magnetic core 4 generates a large magnetic force to adsorb the movable contact assembly 3 to the opening position, the static contact assembly 2 and the movable contact assembly 3 are directly separated by the magnetic force generated by the matching of the input cable 100 and the magnetic core 4, the magnetic force adsorbing trigger and the releasing of the movable contact assembly 3 in the prior art are saved, the step of separating the movable contact assembly 3 from the static contact assembly 2 through the spring is further adopted, the problem of time delay is solved, and the separation speed of the movable contact assembly 3 and the static contact assembly 2 is improved. Meanwhile, the arrangement of the first elastic element 34 enables the moving contact component 3 to apply force to the moving contact component 3 in the process of moving from the critical position to the opening position, and the moving contact component 3 is driven to rapidly move to the opening position under the combined action of magnetic force and elastic force, so that the speed of separating the moving contact component 3 from the static contact component 2 is further increased.

Regarding the structure of the movable contact assembly 3, in this embodiment, optionally, the movable contact assembly 3 includes a support 31 and a connecting rod 32, the support 31 is slidably disposed on the support 1 along a first direction, the connecting rod 32 is disposed at one end of the support 31, and when the movable contact assembly 3 is located at the switching-on position and the critical position, the connecting rod 32 can contact with the two stationary contact assemblies 2 at the same time; the first elastic member 34 is a spring, and two ends of the first elastic member 34 are respectively connected to the bracket 31 and the support base 1. The device is simple in structure and stable in operation. The first elastic element 34 is a compression spring, and when the movable contact assembly 3 is located at the critical position, the central line of the first elastic element 34 is perpendicular to the axis of the support 31.

Of course, in other embodiments, the bracket 31 may be hinged to the support base 1. The position of the first elastic member 34 can be adjusted accordingly.

In order to improve the adaptability of the first elastic member 34, in this embodiment, preferably, the dual-power release further includes a first mounting member and a second mounting member, the first mounting member and the second mounting member are respectively provided with a first mounting groove and a second mounting groove, the first mounting member is hinged to the support 31, the second mounting member is hinged to the support base 1, and two ends of the first elastic member 34 are respectively located in the first mounting groove and the second mounting groove. The arrangement ensures that the first elastic piece 34 is not deformed all the time in the moving process of the bracket 31, and keeps stable elastic force output; in addition, the efficiency of mounting the first elastic member 34 can be improved.

Further, double dynamical release still includes the regulating part, and supporting seat 1 is equipped with along the bar groove of first direction extension, and the regulating part can slide along the bar groove, and can be fixed in the bar inslot, and the second installed part articulates in the regulating part. Optionally, the bar groove is T type groove, and the cross section of regulating part is the T shape, and the regulating part is equipped with the screw, and the screw passes the screw butt in the bottom in bar groove to fixed regulating part. By means of the adjusting member, the initial length of the first elastic member 34 can be adjusted, and the initial elastic force of the first elastic member 34 can be adjusted, so as to control the speed of the moving contact assembly 3 switching to the opening position. In addition, an angle between the first elastic element 34 and the bracket 31 can be adjusted, and further, a component force of the first elastic element 34 along the first direction can be adjusted, so as to adjust a time for the movable contact assembly 3 to switch from the on position to the critical position and a time for the movable contact assembly 3 to switch from the critical position to the off position.

Of course, in other embodiments, the supporting seat 1 is provided with a strip-shaped groove extending along a second direction, the second direction and the first direction are arranged at an angle, and preferably, the first direction and the second direction are perpendicular.

In this embodiment, optionally, the movable contact assembly 3 further includes an adsorbing member 33, the adsorbing member 33 is disposed at the other end of the support 31, and the adsorbing member 33 can be adsorbed by the magnetic core 4 around which the input cable 100 is wound. Specifically, the cross-sectional area of the suction member 33 is larger than that of the holder 31, and this arrangement can enlarge the suction area of the magnetic core 4, improve the suction effect, and further increase the moving speed of the holder 31. The adsorbing member 33 is made of iron or stainless steel.

Preferably, the suction member 33 is provided with a screw hole, the other end of the bracket 31 is provided with a screw, and the suction member 33 and the bracket 31 are screwed through the screw and the screw hole. The arrangement allows the selection of suction members 33 of different cross-sectional areas as required to adjust the suction effect. Of course, in other embodiments, the suction member 33 may be integrally formed with the holder 31.

Preferably, the static contact assembly 2 includes a static support rod 21, a contact 22, a second elastic member 23 and a stop member 24, the contact 22 is disposed at one end of the static support rod 21, the static support rod 21 and the stop member 24 are both disposed on the support base 1, the static support rod 21 has a stop position and a yielding position, which both enable the contact 22 to be connected with the movable contact assembly 3, the static support rod 21 abuts against the stop member 24 when being located at the stop position, and the second elastic member 23 is disposed between the static support rod 21 and the support base 1, so that the static support rod 21 is stopped at the stop position. This arrangement enables the movable contact assembly 3 to abut against the contact 22 in both the critical position and the switched-on position. When the moving contact component 3 is located at the switching-on position, the static support rod 21 is located at the yielding position. When the moving contact component 3 is located at the critical position, the static support rod 21 is located at the stopping position.

Regarding the connection manner of the static support rod 21, in this embodiment, preferably, the other end of the static support rod 21 is hinged to the support seat 1, and both ends of the second elastic element 23 are disposed on the static support rod 21 and the support seat 1. The arrangement is such that the movable contact assembly 3 and the stationary contact assembly 2 are in a balanced position under the combined action of the first elastic element 34, the second elastic element 23 and the magnetic core 4. The static support rod 21 is hinged to the support base 1, so that the static support rod 21 cannot be clamped in the process of switching between the stop position and the yielding position.

Optionally, the supporting seat 1 is provided with a plurality of mounting holes at intervals along the direction of the movement of the static supporting rod 21 from the yielding position to the stopping position, and the stopping member 24 is selected to penetrate through the mounting holes. Preferably, the stopper 24 is screwed to a sidewall of the mounting hole. This arrangement allows the position of the stationary support bar 21, and thus the position of the contact 22, to be adjusted to accommodate the adjustment of the movable contact assembly 3.

Preferably, the end of the contact head 22 in contact with the movable contact assembly 3 is provided with a spherical chamfer, and the arrangement makes the contact head 22 and the movable contact assembly 3 stably contact during the rotation of the stationary support rod 21.

Example two

The present embodiment further provides a dual-power release, which is substantially the same as the first embodiment, except that the stationary support rod 21 is fixed to the support base 1, the contact 22 is a strip structure extending along the first direction and is slidably disposed on the stationary support rod 21 along the second direction, a third elastic member is disposed between the contact 22 and the stationary support rod 21, and the third elastic member makes the contact 22 away from the stationary support rod 21 to abut against the movable contact assembly 3. Illustratively, when the movable contact assembly 3 is in the switching-on position or the critical position, the contact 22 abuts against the connecting rod 32 of the movable contact assembly 3. Preferably, the second direction is perpendicular to the first direction.

The operation principle will be briefly described, and in the opening position, the fixed contact assembly 2 is stopped by the stop member 24 and keeps a certain distance from the movable contact assembly 3.

At this time, no current flows through the magnetic core 4, no attraction force is generated, and the movable contact assembly 3 is subjected to a horizontal component of the first elastic member 34 and abuts against the magnetic core 4, and at this time, manual operation is required for closing. It should be noted that the closing process and structure are the same as those of the conventional short-circuiting device, and are not described herein again.

When the switch is closed, the input cable 100 on the magnetic core 4 has a certain current and has a certain magnetism, the first elastic element 34, the second elastic element 23 and the magnetic core 4 form a dynamic balance, as for which position the movable contact assembly 3 stays, depending on the magnetic force of the magnetic core 4, that is, the magnitude of the current of the main loop, until the current reaches a critical value, the resultant force of the horizontal components of the magnetic core 4, the first elastic element 34 and the second elastic element 23 will be in the same direction and all pull the movable contact assembly 3 to the right, which is the tripping process of overload protection, the short-circuit protection process is similar to that, at the moment of short-circuit current generation, the current input to the cable 100 outside the magnetic core 4 is large, a strong magnetic force is generated to attract the movable contact assembly 3 to the right, at the moment of tripping (over-critical position), the horizontal component of the first elastic element 34 and the magnetic force act simultaneously, the moving contact component 3 is pulled to the right, and the short-circuit current is cut off rapidly.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.