Handle resetting structure

Abstract

The utility model relates to a handle reset structure, which comprises a shell, an operating handle arranged at one end of the shell, a switch-on and switch-off mechanism arranged in the shell, an electric driving mechanism and a driving connecting wheel, the driving connecting wheel is rotatably connected in the shell, an annular accommodating groove is formed in the back surface of the driving connecting wheel, and the driving connecting wheel is arranged in the annular accommodating groove. A fan-shaped gear is arranged on the edge of the back face of the driving connecting wheel in a protruding mode. The two ends of the long transmission rod are rotationally connected with the operating handle and the driving connecting wheel respectively; the two ends of the short transmission rod are rotationally connected with the opening and closing mechanism and the driving connection wheel respectively; the torsional spring is placed in the annular containing groove, one end of the torsional spring is fixed to the driving connecting wheel, and the other end of the torsional spring abuts against the interior of the shell; wherein the sector gear is in gear connection with the electric driving mechanism. The driving connecting wheel has the advantages that the torsion spring is placed in the driving connecting wheel, the space in the shell can be effectively prevented from being occupied, and the size of the torsion spring is smaller.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a handle reset structure. Background Art

[0002] A circuit breaker refers to a switching device that can close, carry, and interrupt the current under normal circuit conditions and can close, carry, and interrupt the current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their application scope. The boundary between high and low voltages is relatively blurred, and generally, electrical appliances above 3 kV are called high-voltage electrical appliances. Generally, an electromagnetic mechanism is provided inside a circuit breaker to quickly act when an overload current occurs, so that the circuit breaker trips.

[0003] Chinese Patent CN111681923A discloses a circuit breaker. The circuit breaker further includes a button mechanism disposed inside the circuit breaker housing. The button mechanism includes a button member slidably disposed on the circuit breaker housing, and the button mechanism is drivingly connected to a transmission member; pressing / pulling the button member drives the operating mechanism to act, so that the circuit breaker closes / trips. The button mechanism further includes a first return spring for driving the connecting member to reset, which is used to drive the button mechanism to reset after the circuit breaker trips; the circuit breaker housing further includes a connecting member track groove, and the connecting member slides linearly along the connecting member track groove. The connecting member is a strip-shaped member, including a connecting member body, a connecting member first hole and a connecting member second hole respectively disposed at both ends of the connecting member body and respectively cooperating with a first connecting rod and a second connecting rod, a connecting member driven table surface drivingly cooperating with the driving teeth of the driving gear member, a connecting member spring limiting boss disposed on one side of the connecting member body, and a connecting member track boss disposed on the connecting member body.

[0004] When the circuit breaker in the above patent closes, it compresses the first return spring to store energy. Then, when the circuit breaker trips, it drives the button mechanism to extend and reset under the action of the first return spring. Since the first return spring is installed inside the circuit breaker housing and abuts against the connecting member spring limiting boss on the connecting member, the first return spring and the connecting member spring limiting boss will occupy the space inside the circuit breaker housing, resulting in a relatively large volume of the circuit breaker. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a handle reset structure to solve the above problems.

[0006] The technical solution of the utility model is realized as follows: A handle reset structure includes a housing, an operating handle disposed at one end of the housing, a closing and tripping mechanism and an electric driving mechanism disposed inside the housing, and further includes:

[0007] A driving connecting wheel, which is rotatably connected inside the housing. An annular receiving groove is formed on the back surface of the driving connecting wheel, and a sector gear protrudes from the edge of the back surface of the driving connecting wheel.

[0008] A long transmission rod, the two ends of which are respectively rotatably connected to the operating handle and the driving connecting wheel.

[0009] A short transmission rod, the two ends of which are respectively rotatably connected to the switching mechanism and the driving connecting wheel.

[0010] A torsion spring, which is placed in the annular receiving groove. One end of the torsion spring is fixed on the driving connecting wheel, and the other end abuts inside the housing.

[0011] Wherein, the sector gear is in gear connection with the electric driving mechanism gear.

[0012] By adopting the above technical solution, during the closing process of the circuit breaker, the driving connecting wheel will rotate counterclockwise, so that the torsion spring twists and stores energy in the annular receiving groove. In the closed state, the torsion spring always remains in a state of storing energy. Then when the circuit breaker is opening, the driving connecting wheel rotates clockwise, and at the same time the torsion spring releases force, accelerating the driving connecting wheel to rotate clockwise, making the opening action faster. At the same time, the operating handle can be quickly pushed out and reset through the long transmission rod; placing the torsion spring inside the driving connecting wheel can effectively avoid occupying the space inside the housing, making its volume smaller, and at the same time the installation is very simple and convenient.

[0013] The present utility model is further provided that: a rotating hole is formed in the middle of the driving connecting wheel, and a rotating shaft is connected in the rotating hole. The driving connecting wheel is rotatably connected inside the housing through the rotating shaft.

[0014] By adopting the above technical solution, the driving connecting wheel can be stably rotatably connected inside the housing.

[0015] The present utility model is further provided that: one end of the torsion spring close to the bottom of the annular receiving groove is set as the front end, and the other end is set as the rear end. The front end is arranged parallel to the central axis of the torsion spring. A fixing hole for inserting the front end is formed on the bottom of the annular receiving groove, and the rear end extends out of the annular receiving groove and abuts inside the housing.

[0016] By adopting the above technical solution, the torsion spring can be effectively fixed inside the driving connecting wheel, and the force on both ends of the torsion spring can be made more stable.

[0017] The present utility model is further provided that: a first insertion hole and a second insertion hole for the long transmission rod and the short transmission rod to be inserted and rotated are formed on the front surface of the driving connecting wheel. An included angle α is formed between the first insertion hole and the second insertion hole and the center of the driving connecting wheel.

[0018] By adopting the above technical solution, the assembly of the long drive rod and the short drive rod with the drive connection wheel is more convenient and the connection is stable.

[0019] The present utility model is further configured such that the angle α is set to 90° - 120°.

[0020] By adopting the above technical solution, when the drive connection wheel rotates, the transmission force effect through the long drive rod and the short drive rod is better, and it is more stable and smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic internal structure diagram when the present utility model is in the opening state of the specific embodiment;

[0023] Figure 2 For Figure 1 the schematic structure diagram of A in

[0024] Figure 3 It is a schematic internal structure diagram when the present utility model is in the closing state of the specific embodiment;

[0025] Figure 4 For Figure 3 the schematic structure diagram of B in

[0026] Figure 5 It is a schematic structure diagram when the drive connection wheel and the torsion spring are assembled;

[0027] Figure 6 It is a schematic structure diagram when the drive connection wheel and the torsion spring are separated Figure 1 ;

[0028] Figure 7 It is a schematic structure diagram when the drive connection wheel and the torsion spring are separated Figure 2 . DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0030] As Figures 1-7 shown, the utility model discloses a handle reset structure, which includes a housing 1, an operating handle 2 provided at one end of the housing 1, a switching mechanism 3 and an electric driving mechanism provided in the housing 1, and further includes:

[0031] A driving connecting wheel 4, the driving connecting wheel 4 is rotatably connected in the housing 1, an annular receiving groove 40 is formed on the back surface of the driving connecting wheel 4, and a sector gear 41 is convexly provided on the edge of the back surface of the driving connecting wheel 4;

[0032] A long transmission rod 5, both ends of the long transmission rod 5 are rotatably connected to the operating handle 2 and the driving connecting wheel 4 respectively;

[0033] A short transmission rod 6, both ends of the short transmission rod 6 are rotatably connected to the switching mechanism 3 and the driving connecting wheel 4 respectively;

[0034] A torsion spring 7, the torsion spring 7 is placed in the annular receiving groove 40, one end of the torsion spring 7 is fixed on the driving connecting wheel 4, and the other end abuts against the inside of the housing 1;

[0035] Wherein, the sector gear 41 is gear-connected to the electric driving mechanism.

[0036] By adopting the above technical solution, during the closing process of the circuit breaker, the driving connecting wheel 4 will rotate counterclockwise, so that the torsion spring 7 twists and stores energy in the annular receiving groove 40. In the closed state, the torsion spring 7 always maintains the energy storage state. Then when the circuit breaker is opening, the driving connecting wheel 4 rotates clockwise, and at the same time the torsion spring 7 releases energy, accelerating the driving connecting wheel 4 to rotate clockwise, making the opening action faster. At the same time, the operating handle 2 can be quickly pushed out and reset through the long transmission rod 5; placing the torsion spring 7 in the driving connecting wheel 4 can effectively avoid occupying the space inside the housing, making its volume smaller, and at the same time the installation is very simple and convenient.

[0037] In an embodiment of the utility model, a rotating hole 42 is formed in the middle of the driving connecting wheel 4, a rotating shaft 43 is connected in the rotating hole 42, and the driving connecting wheel 4 is rotatably connected in the housing 1 through the rotating shaft 43.

[0038] By adopting the above technical solution, the driving connecting wheel 4 can be stably rotatably connected in the housing 1.

[0039] In an embodiment of the utility model, one end of the torsion spring 7 close to the bottom of the annular receiving groove 40 is set as the front end 70, and the other end is set as the rear end 71. The front end 70 is arranged parallel to the central axis of the torsion spring 7. A fixing hole 44 for inserting the front end 70 is formed on the bottom of the annular receiving groove 40, and the rear end 71 extends out of the annular receiving groove 40 and abuts against the inside of the housing 1.

[0040] By adopting the above technical solution, the torsion spring 7 can be effectively fixed in the driving connection wheel 4, and the forces on both ends of the torsion spring 7 can be made more stable.

[0041] In the embodiment of the present utility model, a first insertion hole 45 and a second insertion hole 46 for the long transmission rod 5 and the short transmission rod 6 to be inserted and rotated are formed on the front surface of the driving connection wheel 4, and an included angle α is formed between the first insertion hole 45 and the second insertion hole 46 and the center of the driving connection wheel 4.

[0042] By adopting the above technical solution, the assembly of the long transmission rod 5 and the short transmission rod 6 with the driving connection wheel 4 is more convenient and the connection is stable.

[0043] In the embodiment of the present utility model, the angle of the included angle α is set to 90° - 120°.

[0044] By adopting the above technical solution, when the driving connection wheel 4 rotates, the effect of transmitting power through the long transmission rod 5 and the short transmission rod 6 is better, and it is more stable and smooth.

[0045] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A handle reset structure, comprising a housing (1), an operating handle (2) provided at one end of the housing (1), a closing and opening mechanism (3) provided in the housing (1), and an electric drive mechanism, characterized in that, Further included are: A driving connecting wheel (4), which is rotatably connected inside the housing (1). An annular receiving groove (40) is formed on the back surface of the driving connecting wheel (4), and a sector gear (41) protrudes from the edge of the back surface of the driving connecting wheel (4); A long transmission rod (5), the two ends of which are respectively rotatably connected to the operating handle (2) and the driving connecting wheel (4); A short transmission rod (6), the two ends of which are respectively rotatably connected to the switching mechanism (3) and the driving connecting wheel (4); A torsion spring (7), which is placed in the annular receiving groove (40). One end of the torsion spring (7) is fixed on the driving connecting wheel (4), and the other end abuts inside the housing (1); Wherein, the sector gear (41) is in gear connection with the electric driving mechanism.

2. The handle reset structure according to claim 1, characterized in that, A rotating hole (42) is formed in the middle of the driving connecting wheel (4), and a rotating shaft (43) is connected in the rotating hole (42). The driving connecting wheel (4) is rotatably connected inside the housing (1) through the rotating shaft (43).

3. The handle reset structure according to claim 1, characterized in that, One end of the torsion spring (7) close to the bottom of the annular receiving groove (40) is set as the front end (70), and the other end is set as the rear end (71). The front end (70) is arranged parallel to the central axis of the torsion spring (7). A fixing hole (44) for inserting the front end (70) is formed on the bottom of the annular receiving groove (40), and the rear end (71) extends out of the annular receiving groove (40) and abuts inside the housing (1).

4. A handle reset structure according to claim 1, characterized in that First insertion holes (45) and second insertion holes (46) for inserting and rotating the long transmission rod (5) and the short transmission rod (6) are formed on the front surface of the driving connecting wheel (4). An included angle α is formed between the first insertion holes (45), the second insertion holes (46) and the center of the driving connecting wheel (4).

5. A handle reset structure according to claim 4, characterized in that, The angle of the included angle α is set to 90° - 120°.

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