Power system and circuit breaker

Abstract

The utility model provides a power system and a circuit breaker, and relates to the technical field of low-voltage apparatuses, the power system comprises a driving mechanism and a speed reducing mechanism, the speed reducing mechanism comprises at least two layers of planet wheel sets which are in mutual transmission, one layer of planet wheel set is connected with the driving mechanism, and the other layer of planet wheel set is used for power output; each layer of planet wheel set comprises a planet carrier and a plurality of planet wheels arranged on the planet carrier. The transmission ratio can be effectively increased through the arrangement of the at least two layers of planet wheel sets, the overall structure is more compact, the transmission ratio adjusting range can be wider in a limited space, overall modular design is achieved, integrated installation is facilitated, and the size of a power system is effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a power system and a circuit breaker. Background Art

[0002] The power systems of existing circuit breakers mostly use gears to transmit power, for example, they generally use a spur gear set or a worm gear and spur gear combination; this gear transmission method occupies a large volume and has a dispersed structure, which is not conducive to modular design and integrated installation of the product; and the transmission ratio adjustment range of the power system is also small, which affects the efficiency and performance of the power system. Utility Model Content

[0003] The purpose of the present application is to provide a power system and a circuit breaker to address the deficiencies in the above-mentioned prior art, and to effectively simplify the structure of the power system and improve the transmission efficiency through a modular setting.

[0004] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0005] One aspect of an embodiment of the present application provides a power system, including a driving mechanism and a reduction mechanism, the reduction mechanism including at least two layers of planetary gear sets that transmit power to each other, one layer of the planetary gear sets being connected to the driving mechanism, and another layer of the planetary gear sets being used for power output; each layer of the planetary gear sets including a planetary carrier, and a plurality of planetary gears arranged on the planetary carrier.

[0006] Optionally, the driving mechanism and the planetary gear set are meshingly connected via an input gear.

[0007] Optionally, the input wheel is provided with a meshing gear shaft, and the input wheel extends between the multiple planetary wheels of the planetary gear set connected to the driving mechanism, and meshes with the multiple planetary wheels through the meshing gear shaft.

[0008] Optionally, the plurality of planetary gears include at least three, and at least three of the planetary gears are coplanar.

[0009] Optionally, the reduction mechanism further comprises a fixed wheel and an upper cover which cooperate with each other, the fixed wheel is connected to the driving mechanism, a cavity is formed between the fixed wheel and the upper cover, and the input wheel and at least two layers of the planetary gear sets are located in the cavity;

[0010] It comprises two layers of planetary gear sets, which are respectively a first planetary gear set connected to the driving mechanism and a second planetary gear set connected to the upper cover, the planetary gears of the first planetary gear set are meshed with the fixed gear, the planetary gears of the second planetary gear set are meshed with the upper cover, and the output end of the second planetary gear set extends out of the cavity.

[0011] Optionally, first meshing teeth are formed on the inner circumferential wall of the fixed wheel for meshing with the planetary gears of the first planetary gear set; second meshing teeth are formed on the inner circumferential wall of the upper cover for meshing with the planetary gears of the second planetary gear set.

[0012] Optionally, the fixed wheel and the driving mechanism are positioned and connected; a first positioning hole and at least one positioning column are provided on one end of the fixed wheel facing the driving mechanism, and an output shaft boss and at least one second positioning hole are provided on one end of the driving mechanism facing the fixed wheel, the first positioning hole is used to cooperate with the output shaft boss, and the positioning column is used to connect with the second positioning hole.

[0013] Optionally, a plurality of connecting shafts are arranged on one side of the planet carrier, and a plurality of the planetary gears are arranged on the corresponding connecting shafts; an output end of the planetary gear set is arranged on the other side of the planet carrier, and a plurality of the connecting shafts are arranged coaxially with the output end;

[0014] The output end of the first planetary gear set is meshed with the plurality of planetary gears of the second planetary gear set for transmission, and the output end of the second planetary gear set extends out of the upper cover for power output.

[0015] Optionally, the fixing wheel and the upper cover are snap-fitted;

[0016] At least one snap-fitting groove is arranged on the fixed wheel and snap-fits with the snap-fitting groove arranged on the upper cover.

[0017] Optionally, at least one positioning rib is provided on the fixed wheel to cooperate with a positioning groove provided on the upper cover.

[0018] Another aspect of an embodiment of the present application provides a circuit breaker, including a shell, in which the above-mentioned power system, operating mechanism, handle and contact system are arranged, the output end of the power system is connected to the handle, and the handle is connected to the contact system through the operating mechanism.

[0019] The beneficial effects of this application include:

[0020] The present application provides a power system, which is provided with at least two layers of planetary gear sets, one layer of planetary gear sets is connected to a driving mechanism to transmit power, and the other layer of planetary gear sets is used to output power; the planetary gear sets include a planetary frame for support, and the planetary frame has a plurality of planetary gears. The provision of at least two layers of planetary gear sets can effectively increase the transmission ratio, make the overall structure more compact, and also make the transmission ratio adjustment range wider in a limited space, realize overall modular design, facilitate integrated installation, and help effectively reduce the volume of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of a power system provided in an embodiment of the present application;

[0023] Figure 2 An exploded schematic diagram of a power system provided in an embodiment of the present application;

[0024] Figure 3a One of the exploded structural schematic diagrams of a planetary gear set of a power system provided in an embodiment of the present application;

[0025] Figure 3b A second schematic diagram of an exploded structure of a planetary gear set of a power system provided in an embodiment of the present application;

[0026] Figure 4 One of the partial structural schematic diagrams of a power system provided in an embodiment of the present application;

[0027] Figure 5 A schematic diagram of the structure of an input wheel of a power system provided in an embodiment of the present application;

[0028] Figure 6 A schematic diagram of the structure of a driving mechanism of a power system provided in an embodiment of the present application;

[0029] Figure 7 A schematic diagram of the cooperation between an input wheel and a first planetary gear set of a power system provided in an embodiment of the present application;

[0030] Figure 8 A schematic diagram of the coordination of a first planetary gear set and a second planetary gear set of a power system provided in an embodiment of the present application;

[0031] Fig. 9 A second schematic diagram of a partial structure of a power system provided in an embodiment of the present application;

[0032] Fig.10 One of the fixed wheel structure schematic diagrams of a power system provided in an embodiment of the present application;

[0033] Fig.11 A second schematic diagram of a fixed wheel structure of a power system provided in an embodiment of the present application;

[0034] Fig.12A schematic diagram of an upper cover structure of a power system provided in an embodiment of the present application;

[0035] Fig.13 A schematic diagram of the coordination of a fixed wheel and an upper cover of a power system provided in an embodiment of the present application;

[0036] Fig.14 A schematic diagram of a circuit breaker structure provided in an embodiment of the present application.

[0037] Icons: 10-power system; 11-driving mechanism; 110-output shaft; 111-output shaft boss; 112-second positioning hole; 12-fixed wheel; 120-first meshing tooth; 121-positioning rib; 122-clamping groove; 123-first positioning hole; 13-input wheel; 131-meshing gear shaft; 132-mounting hole; 14.1-first planetary gear set; 14.2-second planetary gear set; 140-planet carrier; 140a-output end; 140b-connecting shaft; 141-planetary wheel; 15-upper cover; 150-second meshing tooth; 151-positioning groove; 152-buckle; 20a-housing; 20-handle; 21-operating mechanism; 22-contact system. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. It should be noted that, in the absence of conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the scope of protection of the present application.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0042] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0043] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In one aspect of the embodiment of the present application, referring to Figure 1 , Figure 2 , provides a power system 10, including a driving mechanism 11 and a reduction mechanism, the reduction mechanism includes at least two layers of planetary gear sets that transmit power to each other, one layer of planetary gear sets is connected to the driving mechanism 11, and the other layer of planetary gear sets is used for power output; each layer of planetary gear sets includes a planetary carrier 140, and a plurality of planetary gears 141 arranged on the planetary carrier 140.

[0045] The driving mechanism 11 is used to provide driving force. For example, in the present application, the driving mechanism 11 can be a motor; the reduction mechanism includes at least two layers of planetary gear sets, and the at least two layers of planetary gear sets are arranged in sequence, wherein one layer of the outermost two layers of planetary gear sets is connected to the driving mechanism 11, and the other layer of the planetary gear set is used for power output; the arrangement of at least two layers of planetary gear sets can increase the transmission ratio.

[0046] The planetary gear set includes a planet carrier 140 , on which a plurality of planetary gears 141 are disposed, and the plurality of planetary gears 141 are coplanar.

[0047] A plurality of connecting shafts 140b are disposed on one side of the planet carrier 140, and the planetary gears 141 are passed through the corresponding connecting shafts 140b; the output end 140a of the planetary gear set is disposed on the other side of the planet carrier 140, and the plurality of connecting shafts 140b are not coaxially disposed with the output end 140a.

[0048] For example, Figure 3a , Figure 3b As shown, the present application sets two layers of planetary gear sets, each of which has three planetary gears 141. Three connecting shafts 140b are set on one side of the planetary carrier 140, and each connecting shaft 140b passes through the planetary gear 141 of the same group; an output end 140a is formed on the other side of the planetary carrier 140, and the output end 140a is used as the power output of the group of planetary gear sets; the output end 140a can Figure 3a The ring gear shown is presented, and can also Figure 3b The gear shaft shown is presented.

[0049] The two-layer planetary gear set of the present application is respectively a first planetary gear set 14 . 1 and a second planetary gear set 14 . 2 . The first planetary gear set 14 . 1 is close to the driving mechanism 11 and connected to the driving mechanism 11 , and the second planetary gear set 14 . 2 is close to the upper cover 15 and connected to the upper cover 15 .

[0050] The output end 140a of the first planetary gear set 14.1 extends into the three planetary gears 141 of the second planetary gear set 14.2 and meshes with each other to drive the three planetary gears 141 of the second planetary gear set 14.2 to transmit.

[0051] The output end 140a of the second planetary gear set 14.2 serves as the final output of the power system 10 and is used for power transmission.

[0052] For example, meshing teeth are formed on the output end 140a of the planetary gear set to transmit power through meshing transmission.

[0053] Therefore, the power system 10 provided in the embodiment of the present application is provided with at least two layers of planetary gear sets, one layer of planetary gear sets is connected to the driving mechanism 11 to transmit power, and the other layer of planetary gear sets is used to output power; the planetary gear sets include a planetary frame 140 for support, and the planetary frame 140 has a plurality of planetary gears 141. The provision of at least two layers of planetary gear sets can effectively increase the transmission ratio, make the overall structure more compact, and also make the transmission ratio adjustment range wider in a limited space, realize the overall modular design, facilitate integrated installation, and help effectively reduce the volume of the power system 10.

[0054] The following description will be made by taking a two-layer planetary gear set as an example. Specifically, the driving mechanism 11 and the corresponding planetary gear set are meshed and connected via the input gear 13 .

[0055] like Figure 4 , Figure 5 As shown, an input wheel 13 is arranged between the drive mechanism 11 and the first planetary gear set 14.1, and a mounting hole 132 is formed at one end of the input wheel 13 facing the drive mechanism 11, for fixedly matching with the output shaft 110 of the drive mechanism 11; for example, the mounting hole 132 of the input wheel 13 in the present application is a D-shaped hole, Figure 6 The output shaft 110 of the driving mechanism 11 is adapted to be a D-shaped shaft; of course, it can also be adapted to other shapes.

[0056] The input wheel 13 is provided with a meshing gear shaft 131 . The input wheel 13 extends between a plurality of planetary wheels 141 of a planetary wheel set connected to the driving mechanism 11 , and meshes with the plurality of planetary wheels 141 through the meshing gear shaft 131 .

[0057] like Figure 7 As shown, one end of the input wheel 13 facing the first planetary gear set 14.1 forms a meshing gear shaft 131, and the meshing gear shaft 131 extends into the plurality of planetary gears 141 of the first planetary gear set 14.1 to mesh with each other.

[0058] In the present application, each of the two-layer planetary gear sets has three planetary gears 141, and the meshing gear shaft 131 extends between the three planetary gears 141 of the first planetary gear set 14.1. The meshing gear shaft 131 simultaneously meshes with the outer teeth of the three planetary gears 141 to drive the three planetary gears 141 of the first planetary gear set 14.1 to rotate.

[0059] The reduction mechanism further includes a fixed wheel 12 and an upper cover 15 that cooperate with each other. The fixed wheel 12 is connected to the driving mechanism 11. A cavity is formed between the fixed wheel 12 and the upper cover 15. The input wheel 13 and the two-layer planetary gear set are located in the cavity. The planetary gear 141 of the first planetary gear set 14.1 is meshed with the fixed wheel 12, and the planetary gear 141 of the second planetary gear set 14.2 is meshed with the upper cover 15. The output end 140a of the second planetary gear set 14.2 extends out of the upper cover 15 for power output. Figure 8 Wherein, the upper cover 15 and the fixed wheel 12 are both fixed and do not rotate.

[0060] Refer to Fig. 9 , the planetary gear 141 of the first planetary gear set 14.1 is located inside the fixed gear 12, Fig.10 A circle of first meshing teeth 120 is formed on the inner circumferential wall of the fixed wheel 12, which is used to mesh with the planetary gears 141 of the first planetary gear set 14.1; Fig.12 The inner circumferential wall of the upper cover 15 forms a circle of second meshing teeth 150 for meshing with the planetary gears 141 of the second planetary gear set 14.2, thereby driving the two layers of planetary gear sets to rotate synchronously.

[0061] like Fig.11As shown, a first positioning hole 123 and at least one positioning column are provided on one end of the fixed wheel 12 facing the driving mechanism 11, and an output shaft boss 111 and at least one second positioning hole 112 are provided on one end of the driving mechanism 11 facing the fixed wheel 12. The first positioning hole 123 is used to cooperate with the output shaft boss 111, and the positioning column is used to connect with the second positioning hole 112.

[0062] The first positioning hole 123 matches with the output shaft boss 111 of the driving mechanism 11 , and the input wheel 13 passes through the first positioning hole 123 and is connected to the output shaft 110 of the driving mechanism 11 .

[0063] At least one positioning column is further provided at one end of the fixing wheel 12 facing the driving mechanism 11 so as to be connected with the second positioning hole 112 of the driving mechanism 11 in a one-to-one correspondence.

[0064] The positioning connection between the fixed wheel 12 and the driving mechanism 11 is achieved through the cooperation between the first positioning hole 123 and the output shaft boss 111 , the positioning column and the second positioning hole 112 .

[0065] Reference Fig.13 When the fixed wheel 12 cooperates with the upper cover 15 , at least one positioning rib 121 is provided on the fixed wheel 12 to cooperate with the positioning groove 151 of the upper cover 15 .

[0066] For example, two protruding positioning ribs 121 are provided on the outer peripheral wall of the fixed wheel 12 of the present application, and two positioning grooves 151 are correspondingly provided on the upper cover 15. The fixed wheel 12 and the upper cover 15 are engaged with each other through the adaptation of the positioning ribs 121 and the positioning grooves 151.

[0067] In addition, at least one snap-in groove 122 is provided on the fixed wheel 12. In the present application, there are two snap-in grooves 122 symmetrically arranged on the outer peripheral wall of the fixed wheel 12, and the two snap-in grooves 122 and the two positioning ribs 121 are evenly spaced; the upper cover 15 is provided with corresponding snaps 152, and the fixed wheel 12 and the upper cover 15 are further fixed by adapting the snaps 152 and the snap-in grooves 122.

[0068] The snap-fitting groove 122 and the buckle 152 , the positioning rib 121 and the positioning groove 151 may be used together or separately, and may be arranged according to specific needs.

[0069] Please refer to Fig.14 As shown, an embodiment of the present application also discloses a circuit breaker, including a shell 20a, in which a power system 10, a handle 20, an operating mechanism 21 and a contact system 22 as described above are arranged, the output end 140a of the power system 10 is connected to the handle 20, and the handle 20 is connected to the contact system 22 through the operating mechanism 21.

[0070] The output end 140a of the above-mentioned power system 10 forms meshing teeth. To match it, a gear ring is also formed on the handle 20. The power of the power system 10 is transmitted to the handle 20 through direct meshing of the gear ring and the meshing teeth, or indirect meshing of the gear ring and the meshing teeth (meshing parts such as gears are arranged between the gear ring and the meshing teeth). The handle 20 drives the operating mechanism 21 to operate, thereby realizing the opening and closing of the contact system 22.

[0071] The power system 10 of the present application can realize remote control of the circuit breaker and improve the transmission efficiency of the circuit breaker. Also, due to the compact structure of the power system 10, the circuit breaker can be optimized in miniaturization to meet the needs of more scenarios.

[0072] The circuit breaker includes the same structure and beneficial effects as the power system 10 in the aforementioned embodiment. The structure and beneficial effects of the power system 10 have been described in detail in the aforementioned embodiment, and will not be repeated here.

[0073] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A power system (10), characterized in that: The invention comprises a driving mechanism (11) and a reduction mechanism, wherein the reduction mechanism comprises at least two layers of planetary gear sets that transmit power to each other, one layer of the planetary gear sets being connected to the driving mechanism (11), and the other layer of the planetary gear sets being used for power output; each layer of the planetary gear sets comprises a planet carrier (140) and a plurality of planetary gears (141) arranged on the planet carrier (140).

2. The power system (10) according to claim 1, characterized in that: The driving mechanism (11) and the planetary gear set are meshedly connected via an input gear (13).

3. The power system (10) according to claim 2, characterized in that: The input wheel (13) is provided with a meshing gear shaft (131), and the input wheel (13) extends between the plurality of planetary wheels (141) of the planetary wheel set connected to the driving mechanism (11), and meshes with the plurality of planetary wheels (141) through the meshing gear shaft (131).

4. The power system (10) according to claim 1, characterized in that: The plurality of planetary gears (141) include at least three, and at least three of the planetary gears (141) are coplanar.

5. The power system (10) according to claim 2 or 3, characterized in that: The speed reduction mechanism further comprises a fixed wheel (12) and an upper cover (15) which cooperate with each other, the fixed wheel (12) being connected to the driving mechanism (11), a cavity being formed between the fixed wheel (12) and the upper cover (15), and the input wheel (13) and at least two layers of the planetary gear set being located in the cavity; The invention comprises two layers of planetary gear sets, the two layers of planetary gear sets are respectively a first planetary gear set (14.1) connected to the driving mechanism (11) and a second planetary gear set (14.2) connected to the upper cover (15); the planetary gear (141) of the first planetary gear set (14.1) is meshed with the fixed wheel (12); the planetary gear (141) of the second planetary gear set (14.2) is meshed with the upper cover (15); and the output end (140a) of the second planetary gear set (14.2) extends out of the cavity.

6. The power system (10) according to claim 5, characterized in that: The inner circumferential wall of the fixed wheel (12) is formed with first meshing teeth (120) for meshing with the planetary wheels (141) of the first planetary wheel set (14.1); the inner circumferential wall of the upper cover (15) is formed with second meshing teeth (150) for meshing with the planetary wheels (141) of the second planetary wheel set (14.2).

7. The power system (10) according to claim 6, characterized in that: The fixed wheel (12) and the driving mechanism (11) are positioned and connected; a first positioning hole (123) and at least one positioning column are provided on one end of the fixed wheel (12) facing the driving mechanism (11); an output shaft boss (111) and at least one second positioning hole (112) are provided on one end of the driving mechanism (11) facing the fixed wheel (12); the first positioning hole (123) is used to cooperate with the output shaft boss (111); and the positioning column is used to connect with the second positioning hole (112).

8. The power system (10) according to claim 6 or 7, characterized in that: A plurality of connecting shafts (140b) are arranged on one side of the planet carrier (140), and a plurality of the planetary gears (141) are arranged on the corresponding connecting shafts (140b); the output end (140a) of the planetary gear set is arranged on the other side of the planet carrier (140), and the plurality of connecting shafts (140b) and the output end (140a) are arranged on a non-coaxial axis; The output end (140a) of the first planetary gear set (14.1) and the plurality of planetary gears (141) of the second planetary gear set (14.2) are meshed and transmitted with each other, and the output end (140a) of the second planetary gear set (14.2) extends out of the upper cover (15) to output power.

9. The power system (10) according to claim 5, characterized in that: The fixed wheel (12) and the upper cover (15) are snap-fitted; At least one snap-fitting groove (122) is provided on the fixed wheel (12) and snap-fits with a snap buckle (152) provided on the upper cover (15).

10. The power system (10) according to claim 9, characterized in that: At least one positioning rib (121) is provided on the fixed wheel (12) and cooperates with a positioning groove (151) provided on the upper cover (15).

11. A circuit breaker, characterized in that: The invention comprises a shell (20a), wherein the power system (10), a handle (20), an operating mechanism (21) and a contact system (22) according to any one of claims 1 to 10 are arranged in the shell (20a), the output end (140a) of the power system (10) is connected to the handle (20), and the handle (20) is connected to the contact system (22) via the operating mechanism (21).

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