Multi-pole circuit breaker
Patent Information
- Application Number
- CN202521946114.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-10
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-09-10
AI Technical Summary
[0003]现有多极断路器产品中的手柄套多采用两端固定的方式，即手柄套只与位于边缘的两个手柄固定连接，设置方式不合理，容易出现多个手柄操作不同步的现象，导致多极断路器的可靠性较低
[0027]第一盲孔的设置可以降低第一隔板上出现应力集中的情况，第二盲孔的设置可以降低第二隔板上出现应力集中的情况，这样设计有利于第一隔板和第二隔板保持稳定的结构和足够的强度，有利于手柄套整体的结构保持稳定。
Smart Images
Figure CN224652324U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of circuit breaker technology, specifically to a multi-pole circuit breaker. Background Technology
[0002] Multi-pole circuit breakers are typically composed of multiple single-pole circuit breakers, each with a handle to control the switching of different phases. To achieve synchronized operation of multi-pole circuit breakers, a handle sleeve is usually used to connect the handles of multiple single-pole circuit breakers together, ensuring that all handles operate synchronously.
[0003] In existing multi-pole circuit breaker products, the handle sleeve is mostly fixed at both ends, meaning that the handle sleeve is only fixedly connected to the two handles located at the edge. This setting is unreasonable and can easily lead to asynchronous operation of multiple handles, resulting in low reliability of the multi-pole circuit breaker.
[0004] Therefore, there is an urgent need for a multi-pole circuit breaker to solve the problems existing in the current technology. Utility Model Content
[0005] The purpose of this application is to provide a multi-pole circuit breaker that can improve the linkage accuracy of multiple handles, reduce the possibility of asynchronous operation of multiple handles, and improve the reliability of the multi-pole circuit breaker.
[0006] This application provides a multi-pole circuit breaker, including a handle sleeve and a first handle, a second handle, and a third handle arranged side by side at intervals. The first handle has a first slot, the second handle has a second slot, and the third handle has a third slot.
[0007] The handle sleeve has a receiving groove, in which a first partition and a second partition are spaced apart. A first handle, a second handle, and a third handle are all installed in the receiving groove. The first partition is inserted between the first handle and the second handle, and the second partition is inserted between the second handle and the third handle.
[0008] A first insert and a second insert are arranged opposite each other on both sides of the first partition, and a third insert is provided on the second partition. The first insert is inserted into the first slot, the second insert is inserted into the second slot, and the third insert is inserted into the third slot.
[0009] The above solution uses a handle sleeve to fix the first, second, and third handles together as a whole. Operating the handle sleeve allows for synchronous operation of the three handles, ensuring synchronized movement. Furthermore, the corresponding engagement of the first slot and first rod, the second slot and second rod, and the third slot and third rod ensures a fixed connection between the first, second, and third handles and the handle sleeve. This allows the handle sleeve to stably and accurately drive each handle, effectively improving the linkage accuracy of multiple handles and thus enhancing the reliability of multi-phase synchronous opening and closing control of the multi-pole circuit breaker.
[0010] In some examples, a fourth slot is provided on the side of the second handle opposite to the second slot, and a fourth rod is provided on the side of the second partition opposite to the second rod, the fourth rod being able to be inserted into the fourth slot.
[0011] The cooperation of the fourth insert and the fourth slot can further improve the connection stability between the handle sleeve and the second handle. Furthermore, the second slot and the fourth slot are located on opposite sides of the second handle. The second insert and the fourth insert can be inserted into the second slot and the fourth slot respectively to fix the second handle together from opposite sides. This effectively improves the connection stability between the handle sleeve and the second handle in the middle position, avoiding the situation where the traditional handle sleeve is only fixedly connected to the first handle and the third handle, which is prone to uneven force on the second handle, thereby ensuring the synchronous operation of the multi-pole circuit breaker.
[0012] In some examples, the second handle is also provided with a clearance notch located on the side of the second handle facing the bottom of the receiving slot. The clearance notch communicates with the fourth slot to avoid the fourth insert, or the clearance notch communicates with the second slot to avoid the second insert.
[0013] The notch allows the second handle to avoid part of the second or fourth insert rod when it is installed between the first and second partitions, so that the second handle can be smoothly installed into the receiving slot and connected to the second and fourth insert rods, effectively simplifying the assembly operation.
[0014] In some examples, the ends of the first and second inserts are provided with a first chamfer, and the ends of the third and fourth inserts are provided with a first chamfer.
[0015] By setting a first chamfer at the ends of the first, second, third, and fourth insert rods, they can be smoothly inserted into the first slot, the second slot, the third slot, and the fourth slot, effectively improving the ease of assembly between the handle sleeve and the three handles.
[0016] In some examples, the sidewalls of the first slot near the opening, the second slot near the opening, the third slot near the opening, and the fourth slot near the opening are all provided with a second chamfer.
[0017] By setting a second chamfer at the openings of the first, second, third, and fourth slots, the first rod can be smoothly inserted into the first slot, the second rod into the second slot, the third rod into the third slot, and the fourth rod into the fourth slot, effectively improving the ease of assembly between the handle sleeve and the three handles.
[0018] In some examples, the receiving slot is configured as a U-shaped slot, with the first handle, second handle, and third handle all fitting into the U-shaped slot.
[0019] The handle sleeve adopts a U-shaped groove structure design. This design matches the outer contour of the first, second, and third handles, which can form a stable clamp and fixation for the three handles, reducing the possibility of shaking or displacement. This is conducive to the handle sleeve stably driving the three handles to move synchronously, thereby improving the reliability of the multi-pole circuit breaker.
[0020] In some examples, the wall of the receiving groove is provided with ribs, and the first handle, the second handle and the third handle all abut against the ribs.
[0021] By setting ribs on the wall of the receiving groove, the first handle, the second handle and the third handle can be tightly abutted against the wall of the receiving groove, further reducing the possibility of loosening and improving the installation stability of the three handles in the receiving groove.
[0022] In some examples, the handle sleeve is integrally formed, and the bottom of the receiving groove is provided with multiple through holes, which are distributed at intervals on both sides of the first and second partitions.
[0023] The one-piece molded handle sleeve has high structural strength. By setting multiple through holes at the bottom of the receiving groove, it is not only beneficial to the one-piece molding of the handle sleeve, but also to reduce stress concentration at the bottom of the receiving groove, thus helping the handle sleeve to maintain a stable structure and sufficient strength.
[0024] In some examples, the multi-pole circuit breaker also includes a fourth handle with a fourth slot. The fourth handle is located on the side of the first handle away from the second handle. A third partition is also provided in the receiving slot, and a fourth insert is provided on the third partition. The third partition is inserted between the first handle and the fourth handle, and the fourth insert is inserted into the fourth slot.
[0025] By adding a third partition in the receiving slot and setting a fourth insert on the third partition, a multi-pole circuit breaker containing four phases can maintain the synchronous operation of the four handles through the handle sleeve, which effectively improves the applicability of the handle sleeve and the reliability of the multi-pole circuit breaker.
[0026] In some examples, the first partition has a first blind hole on the side facing away from the bottom of the receiving groove, and the second partition has a second blind hole on the side facing away from the bottom of the receiving groove.
[0027] The first blind hole reduces stress concentration on the first partition, and the second blind hole reduces stress concentration on the second partition. This design helps the first and second partitions maintain a stable structure and sufficient strength, which in turn helps maintain the overall stability of the handle sleeve. Attached Figure Description
[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0029] Figure 1 This is a schematic diagram of the overall structure of the multi-pole circuit breaker provided in the embodiments of this application.
[0030] Figure 2 A partial exploded view of a multi-pole circuit breaker provided in an embodiment of this application.
[0031] Figure 3 This is a schematic diagram of the first-view structure of the handle sleeve, first handle, second handle and third handle after assembly, as provided in the embodiments of this application.
[0032] Figure 4 This is a schematic diagram of the structure of the first handle, the second handle, and the third handle provided in the embodiments of this application.
[0033] Figure 5 This is a first-view structural diagram of the handle sleeve provided in an embodiment of this application.
[0034] Figure 6 Provided for the embodiments of this application Figure 3 The second perspective.
[0035] Figure 7 Provided for the embodiments of this application Figure 6 Sectional view at point AA.
[0036] Figure 8This is a schematic diagram of the assembly structure between the handle sleeve, the first handle, the second handle, the third handle, and the fourth handle provided in the embodiments of this application.
[0037] Figure 9 This is a second-view structural diagram of the handle sleeve provided in an embodiment of this application.
[0038] Explanation of reference numerals in the attached drawings: 100, multi-pole circuit breaker; 1, first handle; 11, first slot; 2, second handle; 21, second slot; 22, fourth slot; 23, clearance notch; 3, third handle; 31, third slot; 4, fourth handle; 5, handle sleeve; 51, receiving groove; 52, first partition; 521, first blind hole; 53, second partition; 531, second blind hole; 54, first insertion rod; 541, first chamfer; 55, second insertion rod; 56, third insertion rod; 57, fourth insertion rod; 58, through hole; 59, third partition. Detailed Implementation
[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0040] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0042] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0043] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0044] A multi-pole circuit breaker consists of multiple single-pole circuit breakers. Each single-pole circuit breaker in a multi-pole circuit breaker is equipped with a corresponding handle. In order for each single-pole circuit breaker to maintain synchronous breaking, a handle sleeve is usually set to connect all the handles into a whole to ensure that all handles operate synchronously during operation.
[0045] In existing multi-pole circuit breaker products, the handle sleeve is mostly fixed at both ends. That is, the handle sleeve is only fixedly connected to the two handles located at the edge, while the multiple handles located between the two edge handles are usually just sleeved inside the handle sleeve. However, this design is prone to causing the unfixed handles to become asynchronous due to uneven force during opening and closing operations.
[0046] Based on this, the present application provides a multi-pole circuit breaker that can improve the linkage accuracy of multiple handles, reduce the possibility of asynchronous operation of multiple handles, and improve the reliability of the multi-pole circuit breaker.
[0047] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
[0048] Reference Figures 1 to 4 This embodiment provides a multi-pole circuit breaker 100, including a handle sleeve 5 and a first handle 1, a second handle 2, and a third handle 3 arranged side by side at intervals. The first handle 1 is provided with a first slot 11, the second handle 2 is provided with a second slot 21, and the third handle 3 is provided with a third slot 31.
[0049] The multi-pole circuit breaker 100 of this application includes a first circuit breaker, a second circuit breaker, and a third circuit breaker connected side by side. A first handle 1 is disposed on the first circuit breaker, a second handle 2 is disposed on the second circuit breaker, and a third handle 3 is disposed on the third circuit breaker. Furthermore, the first handle 1, the second handle 2, and the third handle 3 are arranged in a straight line with intervals, and the second handle 2 is located between the first handle 1 and the third handle 3.
[0050] Reference Figure 4The first slot 11 is located on the side of the first handle 1 near the second handle 2, and the second slot 21 is located on the side of the second handle 2 near the first handle 1, that is, the slot of the first slot 11 is opposite to the slot of the second slot 21, and the third slot 31 is located on the side of the third handle 3 near the second handle 2.
[0051] Furthermore, referring to Figure 3 and Figure 5 The handle sleeve 5 has a receiving groove 51, and a first partition 52 and a second partition 53 spaced apart are provided in the receiving groove 51. The first handle 1, the second handle 2 and the third handle 3 are all installed in the receiving groove 51. The first partition 52 is inserted between the first handle 1 and the second handle 2, and the second partition 53 is inserted between the second handle 2 and the third handle 3.
[0052] Specifically, the handle sleeve 5 is a long strip structure, and the receiving groove 51 is opened along the length direction of the handle sleeve 5. The length direction of the handle sleeve 5 is the same as the arrangement direction of the first handle 1, the second handle 2 and the third handle 3, so that the receiving groove 51 can accommodate the three handles arranged in a straight line.
[0053] The first partition 52 and the second partition 53 are spaced apart in the receiving groove 51, which can divide the internal space of the receiving groove 51 into three parts, respectively accommodating the first handle 1, the second handle 2 and the third handle 3. At the same time, they can limit the relative position between the handle sleeve 5 and the three handles, reducing the possibility of misalignment between the handle sleeve 5 and the three handles.
[0054] Among them, reference Figure 5 The length of the receiving groove 51 is the same as the length of the handle sleeve 5. Specifically, the receiving groove 51 extends from one end of the handle sleeve 5 to the other end, forming a long strip-shaped receiving groove 51. The first partition 52 and the second partition 53 are parallel to each other in the receiving groove 51, and the distance between the first partition 52 and the second partition 53 is one-third of the length of the receiving groove 51, so as to divide the receiving groove 51 into three equal parts.
[0055] Additionally, refer to Figures 3 to 5 The first partition 52 has a first insert 54 and a second insert 55 arranged opposite to each other on both sides, and the second partition 53 has a third insert 56. The first insert 54 is inserted into the first slot 11, the second insert 55 is inserted into the second slot 21, and the third insert 56 is inserted into the third slot 31.
[0056] The first insert 54 is located on the side of the first partition 52 away from the second partition 53, and the second insert 55 is located on the side of the first partition 52 close to the second partition 53, with both the first insert 54 and the second insert 55 perpendicular to the first partition 52. The third insert 56 on the second partition 53 is located on the side of the second partition 53 away from the first partition 52, and the third insert 56 is perpendicular to the second partition 53.
[0057] During assembly, first align the first insert 54 and the first slot 11, then insert the first insert 54 into the first slot 11 along its extension direction to connect the handle sleeve 5 to the first handle 1. Next, insert the second handle 2 between the first partition 52 and the second partition 53, align the second insert 55 with the second slot 21, and insert it to connect the handle sleeve 5 to the second handle 2. Finally, align the third insert 56 with the third slot 31, then insert the third insert 56 into the third slot 31 along its extension direction to connect the handle sleeve 5 to the third handle 3. In this way, the handle sleeve 5 can be stably assembled on the multi-pole circuit breaker 100 without other fixing structures, and can reliably connect the first handle 1, the second handle 2, and the third handle 3 to improve the accuracy of synchronous operation of the three handles.
[0058] The first insertion rod 54, the second insertion rod 55, and the third insertion rod 56 are all parallel to the bottom of the receiving groove 51. The distance from the first insertion rod 54 to the bottom of the groove is adapted to the wall thickness of the first slot 11 on the first handle 1. That is, after the first insertion rod 54 is inserted into the first slot 11, part of the wall of the first slot 11 is stuck between the first insertion rod 54 and the bottom of the receiving groove 51, thus forming a mutual fixing effect. The second insertion rod 55 and the second slot 21, and the third insertion rod 56 and the third slot 31 are similarly fixed, which has the advantages of high assembly stability and simple operation. Of course, the first insertion rod 54 and the first slot 11, the second insertion rod 55 and the second slot 21, and the third insertion rod 56 and the third slot 31 can also be connected by an interference fit.
[0059] Through the above scheme, the first handle 1, the second handle 2, and the third handle 3 are fixedly connected as a whole using the handle sleeve 5. Operating the handle sleeve 5 allows for synchronous operation of the three handles, ensuring synchronized movement. Furthermore, the corresponding cooperation between the first slot 11 and the first rod 54, the second slot 21 and the second rod 55, and the third slot 31 and the third rod 56 ensures that the first handle 1, the second handle 2, and the third handle 3 are all fixedly connected to the handle sleeve 5. This allows the handle sleeve 5 to stably and accurately drive each handle, effectively improving the linkage accuracy of multiple handles and thus enhancing the reliability of the multi-phase synchronous opening and closing control of the multi-pole circuit breaker 100.
[0060] Reference Figures 3 to 7In some examples, a fourth slot 22 is provided on the side of the second handle 2 opposite to the second slot 21, and a fourth insert 57 is provided on the side of the second partition 53 opposite to the second insert 55. The fourth insert 57 can be inserted into the fourth slot 22.
[0061] The cooperation of the fourth insertion rod 57 and the fourth slot 22 can further improve the connection stability between the handle sleeve 5 and the second handle 2. Furthermore, the second slot 21 and the fourth slot 22 are located on opposite sides of the second handle 2. The second insertion rod 55 and the fourth insertion rod 57 can be inserted into the second slot 21 and the fourth slot 22 respectively to fix the second handle 2 together from opposite sides. This effectively improves the connection stability between the handle sleeve 5 and the second handle 2 in the middle position, avoiding the situation where the traditional handle sleeve 5 is only fixedly connected to the first handle 1 and the third handle 3, which is prone to causing uneven force on the second handle 2. This ensures the synchronous operation of the multi-pole circuit breaker 100.
[0062] Specifically, refer to Figure 3 and Figure 4 The fourth slot 22 is located on the side of the second handle 2 opposite to the side where the second slot 21 is located. The opening of the fourth slot 22 faces the second partition 53. The fourth insertion rod 57 is located on the side of the second partition 53 near the second handle 2, and extends perpendicularly to the second partition 53. The fourth insertion rod 57 is opposite to the second insertion rod 55. The fourth insertion rod 57 is inserted into the fourth slot 22, and the second insertion rod 55 is inserted into the second slot 21, so as to fix the second handle 2 from both sides, effectively improving the assembly stability between the handle sleeve 5 and the second handle 2. The fourth insertion rod 57 has the same structure as the other three insertion rods, and the corresponding fourth slot 22 has the same structure as the other three slots, which will not be described in detail here.
[0063] During the assembly process, after connecting the handle sleeve 5 and the first handle 1, the second handle 2 can first insert the fourth insertion rod 57 into the fourth slot 22 at a certain angle to the handle sleeve 5, then insert the second handle 2 between the fourth insertion rod 57 and the second insertion rod 55, and finally move the second handle 2 to the side closer to the second insertion rod 55 to achieve a common connection with the fourth insertion rod 57 and the second insertion rod 55.
[0064] Reference Figure 2 and Figure 7 In some examples, the second handle 2 is also provided with a clearance notch 23, which is located on the side of the second handle 2 facing the bottom of the receiving slot 51. The clearance notch 23 communicates with the fourth slot 22 to avoid the fourth insertion rod 57.
[0065] The opening of the clearance notch 23 allows the second handle 2 to avoid part of the second insert 55 or part of the fourth insert 57 when it is installed between the first partition 52 and the second partition 53, so that the second handle 2 can be smoothly installed into the receiving groove 51 and connected to the second insert 55 and the fourth insert 57, effectively simplifying the assembly operation.
[0066] In this embodiment, refer to Figure 2 and Figure 4 An abutment 23 is provided on the side of the second handle 2 facing the bottom of the receiving groove 51 and communicating with the fourth slot 22. The shape and size of the abutment 23 match the shape and size of the fourth insert 57. During the assembly of the second handle 2, the second handle 2 can be directly inserted into the receiving groove 51 in a direction perpendicular to the handle sleeve 5, further improving the ease of assembly between the second handle 2 and the handle sleeve 5. Since the fourth insert 57 and the fourth slot 22 transmit operating force through two contacting walls, the abutment 23 facilitates assembly without affecting the stability of the fit between the fourth insert 57 and the second handle 2.
[0067] Of course, the clearance notch 23 can be set to only clear part of the fourth insert rod 57. In this way, when assembling the second handle 2 and the handle sleeve 5, the second handle 2 is first tilted at an appropriate angle relative to the first partition 52, part of the second insert rod 55 is inserted into the second slot 21, and then the fourth insert rod 57 is allowed to enter the fourth slot 22 through the clearance notch 23, thus realizing the assembly of the second handle 2. This improves the assembly convenience while ensuring assembly stability.
[0068] In another embodiment, the clearance notch 23 communicates with the second slot 21 on the second handle 2 to avoid the second insertion rod 55. As in the previous embodiment, the clearance notch 23 avoids the fourth insertion rod 57 or the second insertion rod 55, which facilitates the installation of the second handle 2 into the space between the first partition 52 and the second partition 53, thereby facilitating the fixed connection between the second handle 2 and the fourth insertion rod 57 and the second insertion rod 55.
[0069] Reference Figures 5 to 7 In some examples, the ends of the first insertion rod 54 and the second insertion rod 55 are provided with a first chamfer 541, and the ends of the third insertion rod 56 and the fourth insertion rod 57 are provided with a first chamfer 541.
[0070] By providing a first chamfer 541 at the ends of the first insert 54, the second insert 55, the third insert 56, and the fourth insert 57, the first insert 54 can be smoothly inserted into the first slot 11, the second insert 55 into the second slot 21, the third insert 56 into the third slot 31, and the fourth insert 57 into the fourth slot 22, thereby effectively improving the ease of assembly between the handle sleeve 5 and the three handles.
[0071] The ends of the first insertion rod 54, the second insertion rod 55, the third insertion rod 56 and the fourth insertion rod 57 are all provided with a first chamfer 541. The first chamfer 541 can form a guide slope at the end of each insertion rod. When inserted into the corresponding slot, the first chamfer 541 can abut against the slot wall of the corresponding slot and slide relative to the slot wall of the corresponding slot, so as to smoothly insert into the corresponding slot.
[0072] Specifically, refer to Figure 5 In this embodiment, the first insertion rod 54, the second insertion rod 55, the third insertion rod 56, and the fourth insertion rod 57 are all designed in the form of a quadrangular prism. Taking the first insertion rod 54 as an example, each of the four edges at the end of the first insertion rod 54 is provided with a first chamfer 541. This allows the first insertion rod 54 to smoothly slide relative to the first slot 11 when inserted into the first slot 11, as the first chamfer 541 on the four faces contacts the corresponding slot wall on the first slot 11. The second insertion rod 55, the third insertion rod 56, and the fourth insertion rod 57 are the same as the first insertion rod 54, and will not be described in detail here.
[0073] In some examples, the sidewalls of the first slot 11 near the opening, the second slot 21 near the opening, the third slot 31 near the opening, and the fourth slot 22 near the opening are all provided with a second chamfer (not shown in the figure).
[0074] By setting a second chamfer at the openings of the first slot 11, the second slot 21, the third slot 31, and the fourth slot 22, the first insert rod 54 can be smoothly inserted into the first slot 11, the second insert rod 55 into the second slot 21, the third insert rod 56 into the third slot 31, and the fourth insert rod 57 into the fourth slot 22, thereby effectively improving the ease of assembly between the handle sleeve 5 and the three handles.
[0075] Taking the first slot 11 as an example, the second chamfer set on the side wall of the first slot 11 near the slot opening can form a guide slope at the slot opening with the guide direction facing the inside of the first slot 11. When the first plug rod 54 is inserted, the end of the first plug rod 54 can contact the second chamfer and enter the first slot 11 along the guide direction of the second chamfer, which effectively improves the assembly efficiency of the first plug rod 54 and the first handle 1, and the structure is simple and has high structural strength.
[0076] Furthermore, the shape of the first slot 11 matches the shape of the aforementioned first insert 54, and is a rectangular slot. The four edges of the rectangular slot opening are provided with a second chamfer, which is more conducive to the insertion of the first insert 54.
[0077] In addition, the first chamfer 541 and the second chamfer can coexist. That is, the first insert rod 54 is provided with the first chamfer 541, and the first slot 11 is provided with the second chamfer that cooperates with the first chamfer 541. This can further improve the insertion efficiency and accuracy when inserting the first insert rod 54 and the first slot 11.
[0078] The second slot 21, the third slot 31, and the fourth slot 22 are the same as the first slot 11, have the same design, and achieve the corresponding technical effects, which will not be described in detail here.
[0079] In one example, refer to Figure 8 The multi-pole circuit breaker 100 also includes a fourth handle 4, which has a fourth slot 22. The fourth handle 4 is located on the side of the first handle 1 away from the second handle 2. A third partition 59 is also provided in the receiving slot 51. A fourth insert 57 is provided on the third partition 59. The third partition 59 is inserted between the first handle 1 and the fourth handle 4. The fourth insert 57 is inserted into the fourth slot 22.
[0080] Specifically, when the multi-pole circuit breaker 100 is configured as a four-phase circuit breaker, it includes four handles, such as... Figure 8 As shown, the four handles are also arranged side by side at intervals. The fourth handle 4 is located on the side of the first handle 1 away from the second handle 2. The fourth slot 22 on the fourth handle 4 is located on the side closer to the first handle 1. The structure of the fourth handle 4 is similar to that of the third handle 3, except that the slots of the third slot 31 and the fourth slot 22 face opposite directions.
[0081] Furthermore, the structure of the third partition 59 and the fourth insertion rod 57 is the same as that of the second partition 53 and the third insertion rod 56. The difference is that the extension directions of the third insertion rod 56 and the fourth insertion rod 57 are opposite, so that the fourth slot 22 can be inserted into the fourth insertion rod 57 along the length direction of the receiving slot 51.
[0082] The length of the handle sleeve 5 is correspondingly extended to accommodate four handles. The first partition 52, the second partition 53, and the third partition 59 divide the receiving groove 51 into four receiving spaces, each corresponding to one of the four handles. The first partition 52 is located in the middle of the receiving groove 51. The first insert 54 and the second insert 55 are respectively located on both sides of the first partition 52. The second partition 53 and the third partition 59 are symmetrically arranged with respect to the first partition 52. The third insert 56 is located on the side of the second partition 53 opposite to the first partition 52, and the fourth insert 57 is located on the side of the third partition 59 opposite to the first partition 52.
[0083] In addition, in this embodiment, both the first handle 1 and the second handle 2 are provided with the following... Figure 2The clearance notch 23 on the first handle 1 is used to avoid the first insertion rod 54, so that the first handle 1 can be inserted between the first partition 52 and the third partition 59 in a direction perpendicular to the length of the handle sleeve 5. The clearance notch 23 on the second handle 2 is used to avoid the second insertion rod 55, so that the second handle 2 can be inserted between the first partition 52 and the second partition 53 in a direction perpendicular to the length of the handle sleeve 5. The arrangement of the clearance notch 23 is as follows. Figure 2 And the arrangement of the clearance notch 23 on the second handle 2 in the aforementioned embodiments.
[0084] During the assembly process, the first handle 1 and the second handle 2 can be installed into the receiving groove 51 first, and then the third handle 3 and the fourth handle 4 can be installed into the receiving groove 51 from the openings on both sides of the receiving groove 51 respectively, so as to realize the synchronous control of the four handles by the handle sleeve 5.
[0085] By adding a third partition 59 to the receiving slot 51 and setting a fourth insert 57 on the third partition 59, the four-phase multi-pole circuit breaker 100 can maintain the synchronous operation of the four handles through the handle sleeve 5, which effectively improves the applicability of the handle sleeve 5 and the reliability of the multi-pole circuit breaker 100.
[0086] Reference Figures 2 to 5 In some examples, the receiving slot 51 is configured as a U-shaped slot, and the first handle 1, the second handle 2 and the third handle 3 are all adapted to the U-shaped slot.
[0087] The receiving groove 51 of the handle sleeve 5 adopts a U-shaped groove structure design. This design matches the outer contour of the first handle 1, the second handle 2 and the third handle 3, which can form a stable clamp and fixation for the three handles, reducing the possibility of shaking or displacement. This is conducive to the handle sleeve 5 stably driving the three handles to move synchronously, and improving the reliability of the multi-pole circuit breaker 100.
[0088] The receiving slot 51 is designed as a U-shaped slot, which has a large wrapping area and can wrap the first handle 1, the second handle 2, and the third handle 3 over a large area, which helps to improve the assembly stability of the handle sleeve 5 and the three handles. When the multi-stage circuit breaker 100 also includes a fourth handle 4, the outer contour of the fourth handle 4 is also adapted to the U-shaped slot to improve the assembly stability of all four handles at the same time.
[0089] The outer contours of the first handle 1, the second handle 2, and the third handle 3 are the same as the contour of the U-shaped groove. The two side walls of the U-shaped groove can tightly abut against the two side walls of the first handle 1. On the one hand, this can clamp the first handle 1 tightly, and on the other hand, when operating the opening and closing of the circuit breaker, the operating force can be accurately transmitted from the handle sleeve 5 and push the first handle 1 to move, which helps to improve the accuracy of operation. The second handle 2 and the third handle 3 are similar.
[0090] It should be noted that the multi-pole circuit breaker 100 can also be composed of four, five, or even more circuit breakers connected in parallel, with the number of handles corresponding to this. The number of structures in the receiving groove 51 on the handle sleeve 5 corresponds to the number of handles; for example, the number of partitions is one less than the number of handles. In other words, the connection form between the handle sleeve 5 and multiple handles in this embodiment can be applied to multi-pole circuit breakers 100 with more handles, and this application does not impose further limitations.
[0091] In some examples, the wall of the receiving groove 51 is provided with ribs (not shown in the figure), and the first handle 1, the second handle 2 and the third handle 3 all abut against the ribs.
[0092] By providing ribs on the wall of the receiving groove 51, the first handle 1, the second handle 2 and the third handle 3 can be tightly abutted against the wall of the receiving groove 51, further reducing the possibility of loosening and improving the installation stability of the three handles in the receiving groove 51.
[0093] Specifically, the protruding ribs are provided on the groove wall of the receiving groove 51, which is located on opposite sides of the receiving groove 51, as in the U-shaped groove described above. The protruding ribs extend along the length of the receiving groove 51, and can extend to the same length as the receiving groove 51, or only within the space separated by the first partition 52 and the second partition 53, with shorter protruding ribs. In addition, the height of the protrusion of the ribs from the side wall of the receiving groove 51 is low, which can be 0.5-1mm, thus occupying less space to enhance the clamping effect of the side wall of the receiving groove 51 on the handle. When the multi-stage circuit breaker 100 also includes a fourth handle 4, the fourth handle 4 can also maintain a tight contact with the side wall of the receiving groove 51 by abutting against the protruding rib, so that the receiving groove 51 can also clamp the fourth handle 4.
[0094] In an alternative embodiment, the rib can also be provided on the side wall of the first handle 1, the side wall of the first handle 1 being the surface that abuts against the groove wall of the receiving groove 51. The second handle 2 and the third handle 3 are the same, and can also achieve the same technical effect as the aforementioned embodiment.
[0095] Reference Figures 5 to 9 In some examples, the handle sleeve 5 is integrally formed, and the bottom of the receiving groove 51 is provided with multiple through holes 58, which are distributed at intervals on both sides of the first partition 52 and the second partition 53.
[0096] The one-piece molded handle sleeve 5 has high structural strength. By setting multiple through holes 58 at the bottom of the receiving groove 51, it is not only beneficial to the one-piece molding of the handle sleeve 5, but also to reduce the stress concentration at the bottom of the receiving groove 51, thereby helping the handle sleeve 5 to maintain a stable structure and sufficient strength.
[0097] The handle sleeve 5 in this embodiment is manufactured by one-piece injection molding, which gives the handle sleeve 5 a high overall structural strength. Compared with the traditional handle sleeve 5 that requires assembly and fixation, the structure of this embodiment is stable and the production process is simple and convenient.
[0098] Reference Figure 5 and Figure 9 The bottom of the receiving groove 51 is the bottom of the aforementioned U-shaped groove. Multiple through holes 58 are provided at the bottom of the receiving groove 51 and are distributed on both sides of the first partition 52 and the second partition 53. Specifically, the through holes 58 on both sides of the first partition 52 correspond to the first insert 54 and the second insert 55, and the through holes 58 on both sides of the second partition 53 correspond to the third insert 56 and the fourth insert 57. This design and positional relationship, while ensuring structural stability, facilitates the molding and demolding of the insert parts during injection molding.
[0099] Reference Figure 5 In some examples, the bottom of the receiving slot 51 is also provided with multiple clearance slots, which are spaced apart.
[0100] The clearance groove provides adequate clearance space at the bottom of the receiving groove 51, making it easy for the handle to be smoothly installed into the receiving groove 51 and fixedly connected. On the other hand, it can work with multiple through holes 58 to balance the thickness of the bottom of the receiving groove 51, reducing the possibility of local thermal stress concentration during production and improving the structural stability of the handle sleeve 5 at the bottom of the receiving groove 51.
[0101] In this embodiment, two clearance slots are provided. One clearance slot is located on the side of the first partition 52 opposite to the second partition 53, corresponding to the position of the first handle 1. The other clearance slot is located on the side of the second partition 53 opposite to the first partition 52, corresponding to the position of the third handle 3. The provision of these two clearance slots can provide corresponding clearance space during the assembly of the first handle 1 and the second handle 2 into the receiving slot 51, reducing the friction between the first handle 1 and the bottom of the receiving slot 51, and between the second handle 2 and the bottom of the receiving slot 51, so that the first handle 1 and the third handle 3 can be smoothly installed into the receiving slot 51.
[0102] Reference Figure 5 In some examples, the first partition 52 has a first blind hole 521 on the side opposite to the bottom of the receiving groove 51, and the second partition 53 has a second blind hole 531 on the side opposite to the bottom of the receiving groove 51.
[0103] The first blind hole 521 can reduce stress concentration on the first partition 52, and the second blind hole 531 can reduce stress concentration on the second partition 53. This design helps the first partition 52 and the second partition 53 maintain a stable structure and sufficient strength, which is beneficial to the overall stability of the handle sleeve 5.
[0104] In this embodiment, the first partition 52 and the second partition 53 are relatively thick. The first blind hole 521 is located in the middle of the first partition 52, which can reduce the problem of stress concentration or internal defects in the middle of the first partition 52. Similarly, the second blind hole 531 is located in the middle of the second partition 53, which can reduce the problem of stress concentration or internal defects in the middle of the second partition 53, and is conducive to maintaining the structural stability of the handle sleeve 5.
[0105] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A multi-pole circuit breaker, characterized by, include: A first handle, a second handle, and a third handle are arranged side by side at intervals. The first handle is provided with a first slot, the second handle is provided with a second slot, and the third handle is provided with a third slot. The handle sleeve has a receiving groove, in which a first partition and a second partition are spaced apart. A first insert rod and a second insert rod are arranged opposite to each other on both sides of the first partition, and a third insert rod is provided on the second partition. The first handle, the second handle, and the third handle are all installed in the receiving slot. The first partition is inserted between the first handle and the second handle. The first insert rod is inserted into the first slot. The second insert rod is inserted into the second slot. The second partition is inserted between the second handle and the third handle. The third insert rod is inserted into the third slot.
2. The multi-pole circuit breaker of claim 1, wherein, The second handle is provided with a fourth slot on the side opposite to the second slot, and the second partition is provided with a fourth rod on the side opposite to the second rod. The fourth rod can be inserted into the fourth slot.
3. The multi-pole circuit breaker according to claim 2, characterized in that, The second handle is also provided with a clearance notch, which is located on the side of the second handle facing the bottom of the receiving groove. The clearance notch communicates with the fourth slot to avoid the fourth insertion rod, or the clearance notch communicates with the second slot to avoid the second insertion rod.
4. The multi-pole circuit breaker according to claim 2, characterized in that, The ends of the first and second inserts are both provided with a first chamfer, as are the ends of the third and fourth inserts.
5. The multi-pole circuit breaker according to claim 2, characterized in that, The first slot near the slot opening, the second slot near the slot opening, the third slot near the slot opening, and the fourth slot near the slot opening are all provided with a second chamfer.
6. The multi-pole circuit breaker according to any one of claims 1-5, characterized in that, The receiving slot is configured as a U-shaped slot, and the first handle, the second handle and the third handle are all adapted to the U-shaped slot.
7. The multi-pole circuit breaker according to claim 6, characterized in that, The groove wall of the receiving groove is provided with ribs, and the first handle, the second handle and the third handle all abut against the ribs.
8. The multi-pole circuit breaker according to any one of claims 1-5, characterized in that, The handle sleeve is integrally formed, and the bottom of the receiving groove is provided with multiple through holes, which are distributed at intervals on both sides of the first partition and the second partition.
9. The multi-pole circuit breaker according to claim 1, characterized in that, It also includes a fourth handle, which has a fourth slot. The fourth handle is located on the side of the first handle away from the second handle. The receiving slot also has a third partition, which has a fourth insert rod. The third partition is inserted between the first handle and the fourth handle, and the fourth insert rod is inserted into the fourth slot.
10. The multi-pole circuit breaker according to claim 1, characterized in that, The first partition has a first blind hole on the side facing away from the bottom of the receiving groove, and the second partition has a second blind hole on the side facing away from the bottom of the receiving groove.