Circuit breaker driving mechanism with high transmission precision

Abstract

The utility model discloses a breaker driving mechanism with high transmission precision, and relates to the breaker assembly technology field, the breaker driving mechanism comprises a lower housing and an upper housing, the opposite sides of the lower housing and the upper housing abut against each other, the lower housing is internally provided with a driving member and a reduction gear set, the driving member is in transmission connection with the reduction gear set, and the reduction gear set is in transmission connection with the lower housing. Metal supports are arranged at the top and the bottom of the reduction gear set, fixing heads are fixedly inserted into the metal supports, supporting pieces are arranged at one ends of the fixing heads, the two supporting pieces are connected with the lower shell and the upper shell respectively, and gaps are reserved between the reduction gear set and the lower shell and between the reduction gear set and the upper shell. Through cooperation of the metal support, the fixing head and the supporting piece, the reduction gear set can be positioned between the lower shell and the upper shell, direct contact between the reduction gear set and the upper shell can be avoided, large gaps generated when the reduction gear set encounters water are avoided, and the transmission precision of the reduction gear set is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit breaker assembly technical field, concretely to a circuit breaker drive mechanism that transmission precision is high. BACKGROUND

[0002] The intelligent circuit breaker is an electrical equipment integrated with internet of things technology, digital control and multiple protection functions, supports remote control, realizes remote opening and closing operation, and can automatically complete opening and closing without direct operation, including a traditional circuit breaker and a set of opening and closing transmission mechanism, which drives the handle or the release in the traditional circuit breaker to realize closing or opening according to requirements.

[0003] For example, the existing Chinese patent (publication number: CN219936962U) discloses an intelligent circuit breaker, the shell and the fuselage can be fixedly connected to the circuit breaker support in the power distribution cabinet, the relative position of the opening and closing device and the circuit breaker body is more stable, and the connection strength of the two is improved, the fuselage and the shell are not easy to produce new assembly positioning errors during the use period of the intelligent circuit breaker, and the transmission error of the opening mechanism and the release and the transmission error of the closing mechanism and the handle are always limited in a smaller range.

[0004] However, the above-mentioned design of the intelligent circuit breaker still has some shortcomings in actual use: although the existing intelligent circuit breaker can stably install the transmission mechanism, since the shell of the intelligent circuit breaker is mostly made of nylon material, and the water absorption rate of nylon is relatively high, being 1%-1.3%, if the middle distance of the two gears is 30mm, then the size change after water absorption is about 0.3mm, which greatly affects the transmission accuracy.

[0005] Therefore, we design a circuit breaker drive mechanism with high transmission accuracy to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a circuit breaker drive mechanism with high transmission accuracy to solve the problems in the above background technology.

[0007] To solve the above technical problems, the utility model provides a circuit breaker drive mechanism with high transmission accuracy, which comprises a lower shell and an upper shell, the opposite side of the lower shell and the upper shell is abutted, a driving part and a speed reducer gear set are arranged in the lower shell, the driving part is in transmission connection with the speed reducer gear set, metal supports are arranged at the top and the bottom of the speed reducer gear set, fixed heads are fixedly inserted into the metal supports, support parts are arranged at one end of the fixed heads, the two support parts are connected with the lower shell and the upper shell respectively, and the speed reducer gear set is left with a gap from the lower shell and the upper shell.

[0008] Further, the reduction gear set comprises three rotating shafts, the three rotating shafts are rotatably inserted into two metal supports, a first reduction gear is fixedly sleeved on one of the rotating shafts, a second reduction gear is also fixedly sleeved on the metal support, one of the second reduction gears is in transmission connection with the driving member, the first reduction gear is in meshing connection with another one of the second reduction gears, and the three second reduction gears are in sequential meshing connection.

[0009] Further, a threaded groove is formed in the top of the fixing head, a threaded rod is fixedly installed at the bottom of the supporting member, and the bottom end of the threaded rod is threadedly inserted into the threaded groove.

[0010] Further, a positioning member is fixedly installed at one side of the bottom of the supporting member, a sliding member is slidably arranged in the positioning member, a clamping rod is fixedly installed at the bottom end of the sliding member, the bottom end of the clamping rod slidably penetrates through the positioning member, a return spring is fixedly installed at the top of the sliding member, the other end of the return spring is arranged in the positioning member, a pulling member is arranged at one side of the sliding member, a plurality of threaded grooves are formed in the top of the metal support, and the bottom end of the clamping rod is slidably inserted into one of the threaded grooves.

[0011] Further, the pulling member comprises a connecting member, the connecting member is fixedly installed at one side of the sliding member, and the other end of the connecting member slidably penetrates through the positioning member and is provided with a pulling block.

[0012] Further, a cavity, a sliding opening and a fixing opening are respectively formed in the inside, one side and the bottom of the positioning member, the cavity, the sliding opening and the fixing opening are in communication, the sliding member is slidably connected in the cavity, the bottom end of the clamping rod is slidably inserted into the fixing opening, the connecting member is slidably inserted into the sliding opening, and the other end of the return spring, which is away from the sliding member, is fixedly installed on the inner top wall of the cavity.

[0013] Further, a permanent magnet is fixedly installed on the inner top wall of the cavity, an iron block is fixedly installed at the top of the sliding member, and the permanent magnet is in magnetic connection with the iron block in cooperation.

[0014] Further, the driving member comprises a motor, the motor is fixedly installed on the lower shell, the driving end of the motor rotatably penetrates through the lower shell and is provided with a driving gear, and the driving gear is in meshing connection with one of the second reduction gears.

[0015] Compared with the prior art, the metal support, the fixing head and the supporting member are cooperated, so that the reduction gear set can be positioned between the lower shell and the upper shell, direct contact with the reduction gear set can be avoided, the reduction gear set can avoid a large gap caused by water, and the transmission precision of the reduction gear set is ensured.

[0016] Compared with the prior art, the utility model discloses the beneficial effects are: through the rotation support piece, can make the support piece drive screw rod in the screw groove and rotate and move, the height of support piece is adjusted conveniently, thereby the spacing between lower casing and upper casing is adapted, convenient installation is formed, through the pull of pull -out block, can make the iron block and permanent magnet separate, at this time reset spring because the self -elasticity promotes the slide in the cavity and moves downward, until making the clamping rod inserts the inside of below adaptation, can the support piece steady positioning, avoid the problem of the rotation of support piece. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the three -dimensional structure schematic diagram of the utility model lower casing interior;

[0018] Figure 2 It is the three -dimensional structure schematic diagram of the utility model whole outside;

[0019] Figure 3 It is the three -dimensional structure schematic diagram of the utility model metal support outside;

[0020] Figure 4 It is the three -dimensional structure schematic diagram of the utility model positioning piece and positioning piece interior half cut -open;

[0021] Figure 5 It is the three -dimensional structure schematic diagram of the utility model Figure 4 It is the three -dimensional structure schematic diagram of the utility model

[0022] In the drawing: 1, lower casing;2, upper casing;3, metal support;4, fixed head;5, support piece;6, rotation axis;7, first speed reducer gear;8, second speed reducer gear;9, screw groove;10, screw rod;11, positioning piece;12, slide;13, clamping rod;14, reset spring;15, connecting piece;16, pull -out block;17, cavity;18, slide mouth;19, fixed mouth;20, permanent magnet;21, iron block;22, motor;23, drive gear. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0024] Please refer to Figures 1-5This utility model provides a technical solution: a circuit breaker drive mechanism with high transmission accuracy, including a lower housing 1 and an upper housing 2. The lower housing 1 and the upper housing 2 abut against each other on opposite sides. A drive component and a reduction gear set are provided inside the lower housing 1. The drive component and the reduction gear set are connected in transmission. Metal brackets 3 are provided at the top and bottom of the reduction gear set. A fixing head 4 is fixedly inserted into the metal bracket 3. A support member 5 is provided at one end of the fixing head 4. The two support members 5 are respectively connected to the lower housing 1 and the upper housing 2. A gap is left between the reduction gear set and the lower housing 1 and the upper housing 2.

[0025] The reduction gear set includes three rotating shafts 6, all of which are rotatably inserted into two metal brackets 3. A first reduction gear 7 is fixedly sleeved on one of the rotating shafts 6, and a second reduction gear 8 is also fixedly sleeved on the metal bracket 3. One of the second reduction gears 8 is connected to the driving component for transmission. The first reduction gear 7 is meshed with another of the second reduction gears 8. The three second reduction gears 8 are meshed in sequence. The driving component includes a motor 22, which is fixedly mounted on the lower housing 1. The driving end of the motor 22 rotatably passes through the lower housing 1 and is provided with a driving gear 23. The driving gear 23 is meshed with one of the second reduction gears 8.

[0026] In practice, the metal bracket 3, the fixing head 4 and the support 5 work together to not only position the reduction gear set between the lower housing 1 and the upper housing 2, but also to avoid direct contact with them, thereby preventing the reduction gear set from having a large gap when it comes into contact with water and ensuring its transmission accuracy.

[0027] See Figures 1-5 The top of the fixed head 4 is provided with a threaded groove 9, and the bottom of the support 5 is fixedly installed with a threaded rod 10, the bottom end of the threaded rod 10 being threaded into the threaded groove 9.

[0028] In practice, based on the above implementation, by rotating the support member 5 in advance, the support member 5 can drive the threaded rod 10 to rotate and move within the threaded groove 9, which facilitates the adjustment of the height of the support member 5, thereby adapting to the distance between the lower housing 1 and the upper housing 2, and facilitating installation.

[0029] See Figures 1-5 A positioning component 11 is fixedly installed on one side of the bottom of the support component 5. A sliding component 12 is slidably arranged inside the positioning component 11. A locking rod 13 is fixedly installed at the bottom end of the sliding component 12. The bottom end of the locking rod 13 slides through the positioning component 11. A return spring 14 is fixedly installed at the top of the sliding component 12. The other end of the return spring 14 is arranged inside the positioning component 11. A pulling component is arranged on one side of the sliding component 12. Multiple 24s are opened at the top of the metal bracket 3. The bottom end of the locking rod 13 is slidably inserted into one of the 24s.

[0030] The pulling component includes a connector 15, which is fixedly installed on one side of the slide 12. The other end of the connector 15 slides through the positioning component 11 and is provided with a pull block 16. The positioning component 11 has a cavity 17, a sliding opening 18, and a fixing opening 19 respectively on its interior, one side, and bottom. The cavity 17, the sliding opening 18, and the fixing opening 19 are connected. The slide 12 is slidably connected in the cavity 17. The bottom end of the lever 13 is slidably inserted into the fixing opening 19. The connector 15 is slidably inserted into the sliding opening 18. The end of the return spring 14 away from the slide 12 is fixedly installed on the inner top wall of the cavity 17. A permanent magnet 20 is fixedly installed on the inner top wall of the cavity 17. An iron block 21 is fixedly installed on the top of the slide 12. The permanent magnet 20 and the iron block 21 are magnetically connected.

[0031] In specific implementation, based on the above implementation, after adjusting the height of the support 5, the iron block 21 can be separated from the permanent magnet 20 by pulling down the pull block 16. At this time, the return spring 14 pushes the slide 12 downward in the cavity 17 due to its own elasticity until the locking rod 13 is inserted into the lower fitting 24, which can stably position the support 5 and avoid the problem of the support 5 rotating on its own. When rotating the support 5, the pull block 16 can be pulled up to make the slide 12 slide upward and attract the iron block 21 and the permanent magnet 20. At this time, the locking rod 13 slides out of the 24, which can be easily positioned to facilitate rotating the support 5.

[0032] Working principle: During use, the metal bracket 3, the fixing head 4 and the support 5 work together to not only position the reduction gear set between the lower housing 1 and the upper housing 2, but also avoid direct contact with them, thereby preventing the reduction gear set from having a large gap when it comes into contact with water, and ensuring its transmission accuracy.

[0033] By rotating the support member 5 beforehand, the support member 5 can drive the threaded rod 10 to rotate and move within the threaded groove 9, making it easy to adjust the height of the support member 5 to match the distance between the lower housing 1 and the upper housing 2, thus facilitating installation.

[0034] After adjusting the height of the support 5, the iron block 21 can be separated from the permanent magnet 20 by pulling down the pull block 16. At this time, the return spring 14 pushes the slider 12 downward in the cavity 17 due to its own elasticity until the locking rod 13 is inserted into the lower fitting 24, which can stably position the support 5 and avoid the problem of the support 5 rotating on its own. When rotating the support 5, the pull block 16 can be pulled up to make the slider 12 slide upward and attract the iron block 21 and the permanent magnet 20. At this time, the locking rod 13 slides out of the 24, which can be easily positioned to facilitate rotating the support 5.

Claims

1. A circuit breaker driving mechanism with high transmission precision, comprising a lower shell (1) and an upper shell (2), the lower shell (1) is in abutment with the side opposite to the upper shell (2), a driving member and a reduction gear set are arranged in the lower shell (1), the driving member is in transmission connection with the reduction gear set, characterized in that, The top and bottom of the reduction gear set are provided with metal supports (3), the metal supports (3) are fixedly inserted with fixed heads (4), one end of the fixed heads (4) is provided with supports (5), the two supports (5) are connected with the lower shell (1) and the upper shell (2) respectively, and gaps are left between the reduction gear set and the lower shell (1) and the upper shell (2).

2. The circuit breaker drive mechanism with high transmission precision according to claim 1, characterized in that: The reduction gear set comprises three rotating shafts (6), the three rotating shafts (6) are rotatably inserted in the two metal supports (3), one of the rotating shafts (6) is fixedly sleeved with a first reduction gear (7), the metal supports (3) are further fixedly sleeved with second reduction gears (8), one of the second reduction gears (8) is in transmission connection with a driving member, the first reduction gear (7) is in meshing connection with another of the second reduction gears (8), and the three second reduction gears (8) are in meshing connection in sequence.

3. The circuit breaker drive mechanism with high transmission accuracy as described in claim 1, characterized in that: The top of the fixed head (4) is provided with a threaded groove (9), the bottom of the support (5) is fixedly provided with a threaded rod (10), and the bottom end of the threaded rod (10) is threadedly inserted in the threaded groove (9).

4. The circuit breaker drive mechanism with high transmission accuracy as described in claim 1, characterized in that: The bottom of the support (5) is fixedly provided with a positioning member (11) on one side, the positioning member (11) is slidably provided with a sliding member (12), the bottom end of the sliding member (12) is fixedly provided with a clamping rod (13), the bottom end of the clamping rod (13) is slidably penetrated through the positioning member (11), the top of the sliding member (12) is fixedly provided with a return spring (14), the other end of the return spring (14) is arranged in the positioning member (11), one side of the sliding member (12) is provided with a pulling member, the top of the metal support (3) is provided with a plurality of (24), and the bottom end of the clamping rod (13) is slidably inserted in one of the (24).

5. The circuit breaker drive mechanism with high transmission accuracy as described in claim 4, characterized in that: The pulling member comprises a connecting member (15), the connecting member (15) is fixedly arranged on one side of the sliding member (12), and the other end of the connecting member (15) is slidably penetrated through the positioning member (11) and is provided with a pulling block (16).

6. The circuit breaker drive mechanism of high transmission precision according to claim 5, characterized in that: The inside, one side and bottom of the positioning member (11) are respectively provided with a cavity (17), a sliding opening (18) and a fixing opening (19), the cavity (17), the sliding opening (18) and the fixing opening (19) are in communication, the sliding member (12) is slidably connected in the cavity (17), the bottom end of the clamping rod (13) is slidably inserted in the fixing opening (19), the connecting member (15) is slidably inserted in the sliding opening (18), and the other end of the return spring (14) away from the sliding member (12) is fixedly arranged on the inner top wall of the cavity (17).

7. A circuit breaker drive mechanism with high transmission accuracy as described in claim 6, characterized in that: The inner top wall of the cavity (17) is fixedly provided with a permanent magnet (20), the top of the sliding member (12) is fixedly provided with an iron block (21), and the permanent magnet (20) is in magnetic connection with the iron block (21) in cooperation.

8. The circuit breaker drive mechanism with high transmission accuracy as described in claim 1, characterized in that: The driving member comprises a motor (22), the motor (22) is fixedly installed on the lower shell (1), and the driving end of the motor (22) is rotatable through the lower shell (1) and is provided with a driving gear (23), the driving gear (23) is meshed and connected with one of the second reduction gears (8).

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