Handle mechanism for circuit breaker
By designing a handle mechanism for the circuit breaker, a convenient closing operation of the circuit breaker in the mine explosion-proof distribution box is achieved, which solves the cumbersome operation and safety problems in the existing technology and improves the reliability of use.
Patent Information
- Application Number
- CN202422610394.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-10-28
AI Technical Summary
The existing circuit breaker with a closing button is cumbersome to operate in a mine explosion-proof distribution box and affects safety. A window must be opened on the box to press the closing button.
A handle mechanism for a circuit breaker is designed, comprising a handle sleeve and a closing button operating member. The handle sleeve is connected to a mining explosion-proof distribution box to achieve automatic pressing of the closing button, avoiding the need for tools to be inserted for operation.
The operation convenience and safety of the circuit breaker in the mine explosion-proof distribution box are improved, and tedious operation and safety impact are avoided.
Smart Images
Figure CN223333734U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a handle mechanism for a circuit breaker. Background Art
[0002] A circuit breaker is a mechanical switching device that can close, carry, and disconnect currents under normal circuit conditions, can carry specified overcurrents within a specified time, and can close and disconnect currents under abnormal circuit conditions (such as various short-circuit conditions).
[0003] With the continuous use of circuit breakers, the safety of circuit breaker use has been continuously improved. For example, in order to ensure that some circuit breakers are not accidentally tripped and mistakenly closed by other circuit breakers before the cause of the trip is found; or to avoid the accident caused by mistakenly pushing the handle of the circuit breaker that has been opened during power installation, a closing button is usually installed on the circuit breaker. That is, when closing the circuit breaker, the circuit breaker must be closed only after pressing the closing button.
[0004] Existing circuit breakers with closing buttons are widely used in various industries due to their high safety and reliability. However, it has been found that circuit breakers with closing buttons are constrained when used in some industries. For example, when used in mines, the circuit breaker is installed in a mine explosion-proof distribution box. That is, after the circuit breaker is installed in the mine explosion-proof distribution box, the entire circuit breaker is limited in the mine explosion-proof distribution box. After installation, the only part of the circuit breaker that can be driven from the outside of the mine explosion-proof distribution box is the handle. Since the circuit breaker requires a closing button for closing the circuit breaker, and since it is used in the mine explosion-proof distribution box, it cannot be opened.
[0005] Based on this problem, some existing explosion-proof distribution boxes for mines generally have a window on the box body corresponding to the position of the closing button. That is, during the closing stage, it is necessary to use a tool to reach into the mine explosion-proof distribution box to press the closing button on the circuit breaker before the circuit breaker handle can be operated to close the circuit. However, this operation method is quite cumbersome and also requires a window to be opened on the mine explosion-proof distribution box, which will also cause a certain degree of impact on safety. Summary of the Invention
[0006] In view of the above-mentioned deficiencies, the present invention provides a handle mechanism for a circuit breaker, which can realize convenient closing of a mine circuit breaker.
[0007] To achieve the above objectives, the present invention employs a handle mechanism for a circuit breaker, comprising a handle sleeve, a handle, and a closing button operating member. The handle comprises a drive portion extending toward one side of the circuit breaker and into the circuit breaker to connect to the operating mechanism, and an operating member extending outside the circuit breaker to drive the drive portion. The handle sleeve comprises a handle sleeve connecting end, through which the handle sleeve is sleeved onto the operating member of the handle. One end of the closing button operating member is linked to the handle sleeve, and the other end extends toward one side of the closing button on the external circuit breaker.
[0008] The handle sleeve also includes a control end that is distributed on one side toward the operating portion and extends outward and is connected to a mechanism on an external mining explosion-proof distribution box for performing circuit breaker opening and closing operations;
[0009] Used in the closing stage of the circuit breaker in the mine explosion-proof distribution box, the mechanism on the mine explosion-proof distribution box used to perform the circuit breaker opening and closing operations drives the closing button operating member to move toward one side of the closing button on the circuit breaker and perform a contact pressing action before the handle sleeve is driven to perform the flip closing.
[0010] The above beneficial effects are as follows: by involving the handle mechanism of the circuit breaker in a closing button operating member and a handle cover used in conjunction with the handle, wherein one end of the closing button operating member extends to one side of the closing button on the circuit breaker, and the other end thereof is a structural design that can be linked with the handle cover, and synchronously involving the handle cover in an operating portion for the handle cover and an operating end for connecting to a mechanism for performing circuit breaker opening and closing operations on an external mining explosion-proof distribution box, the circuit breaker used in the mining explosion-proof distribution box can be used to drive the mechanism for performing circuit breaker closing operations outside the mining explosion-proof distribution box after an accidental trip or other circumstances occur.
[0011] The operating end on the handle sleeve is actuated, and the handle is driven to move via the operating portion. When the handle sleeve moves, the closing button operating member linked to the handle sleeve can be driven in conjunction. That is, through the action of the closing button operating member, when the circuit breaker is closed, the closing button operating member first performs the required contact and pressing action on the closing button, thereby ensuring the reliability of the circuit breaker used in the explosion-proof distribution box for mining and the convenience of operation during the closing process of the circuit breaker. At the same time, it also avoids the need to open a window on the box body and use a tool to reach into the closing button position on the circuit breaker and press it before performing the subsequent closing operation, which is similar to the existing situation. The operation is quite cumbersome and the safety is affected by opening the window.
[0012] The utility model is further configured such that the closing button operating member and the handle sleeve are detachably connected.
[0013] Through the above-mentioned arrangement, the closing button operating member and the handle cover can be conveniently assembled to be molded. At the same time, when the two are assembled, the handle can be reliably limited between the two to prevent accidental loosening. In addition, it can also avoid the situation where the closing button operating member has an overly complex structure or other situations, which causes the molding process to be cumbersome or the difficulty to be greatly increased when the two (i.e., the closing button operating member and the handle cover) are molded simultaneously.
[0014] The present utility model is further configured such that the handle cover also includes a limiting connection portion formed on the operating portion, and the closing button operating member includes a limiting connection end engaged with the handle cover, a button operating end extending toward the closing button, and a limiting portion distributed on one side of the limiting connection portion and in contact with the limiting portion. The limiting connection portion contacts the limiting portion, and a fastening fit is formed between the limiting portion and the limiting connection portion through the fastener, thereby forming a linkage connection between the closing button operating member and the handle cover.
[0015] By directly installing a fastener at the position of the limiting part after the limiting connection part contacts the limiting part, the two (i.e., the closing button operating part and the handle cover) are matched and limited, which makes the assembly and limitation process of the two convenient and does not require additional design. As in the case of other structures, this is the first solution for the assembly between the closing button operating part and the handle cover.
[0016] The present invention is further configured such that the handle cover further includes a limit connection portion formed on the operating portion, wherein an insertion hole is formed in the limit connection portion, and the closing button operating member includes a limit connection end engaged with the handle cover, a button operating end extending toward the closing button, and a limit portion distributed on one side of the limit connection portion, wherein an insertion portion is extended into the insertion hole on the limit portion.
[0017] Between the closing button operating part and the handle sleeve, the limiting connection part passes through the side away from the limiting part, extends into the insertion hole through the fastener, and forms a tight fit with the insertion part, forming a linkage connection between the closing button operating part and the handle sleeve; there is a clearance fit between the insertion hole and the insertion part.
[0018] By adopting the above-mentioned method, an insertion hole is opened in the limiting connection part, and the limiting part is provided with an insertion part that can be inserted into the insertion hole. At the same time, a fastener is extended through the side of the limiting connection part away from the limiting part and cooperates with the insertion part, thereby realizing the cooperation and limitation between the closing button operating part and the handle cover. This is the second solution for assembling the closing button operating part and the handle cover.
[0019] The present invention is further configured such that the handle cover further includes a limit connection portion formed on the operating portion, wherein an insertion hole is formed in the limit connection portion, and the closing button operating member includes a limit connection end engaged with the handle cover, a button operating end extending toward the closing button, and a limit portion distributed on one side of the limit connection portion, wherein an insertion portion is formed on the limit portion and extends into the insertion hole;
[0020] The interference fit between the outer edge of the insertion portion and the insertion hole forms a linkage connection between the closing button operating member and the handle sleeve.
[0021] By means of the above, the insertion hole in the limiting connection part and the insertion part on the limiting part for extending into the insertion hole are matched and limited by an interference fit. That is, after the insertion part is inserted into the insertion hole, the insertion is clamped and limited by an interference fit. The insertion hole and the insertion part can be structures of any geometric shape that can be docked. This is the third solution for assembling the closing button operating member and the handle sleeve.
[0022] The present invention is further configured such that the handle cover further comprises a limiting connection portion formed on the operating portion, an insertion hole is formed in the limiting connection portion, the closing button operating member comprises a limiting connection end engaged with the handle cover, a button operating end extending toward the closing button, and a limiting portion distributed on one side of the limiting connection portion, an insertion portion extending into the insertion hole is formed on the limiting portion, a buckle portion is formed on the insertion portion at an end away from the limiting portion, and a buckle groove adapted to the buckle portion is formed on a wall of the insertion hole;
[0023] Between the closing button operating member and the handle sleeve, the insertion portion and the snap portion extend into the insertion hole, and the snap portion is snapped into the snap groove to form a limit for the closing button operating member on the handle sleeve, and constitute a linkage connection between the closing button operating member and the handle sleeve.
[0024] In addition to forming the insertion portion on the limiting portion as described above, a snap-fit portion is also formed on the insertion portion at an end away from the limiting portion, and a snap-fit groove is simultaneously formed on the insertion hole corresponding to the snap-fit portion. That is, after the insertion portion extends into the insertion hole, it can be limited by snapping. This is the fourth solution for assembling the closing button operating member and the handle sleeve.
[0025] The present invention is further configured such that the handle cover further includes a limit connection portion formed on the operating portion, the closing button operating member includes a limit connection end engaged with the handle cover, a button operating end extending toward the closing button, and a limit portion distributed on one side of the limit connection portion, the limit connection portion includes an insertion hole formed therein, and a motion track groove formed therein, the motion track groove being in communication with the insertion hole;
[0026] The limiting portion includes an outer limiting portion that abuts against the limiting connection portion, an inserting portion connected to the outer limiting portion and extending into the inserting hole, and an operating member limiting portion connected to the inserting portion. The operating member limiting portion and the inserting portion are staggered. The motion track groove includes a sliding track groove for the operating member limiting portion to pass through and slide, and a track limiting portion for the operating member limiting portion to slide and limit.
[0027] During the coordination stage between the closing button operating member and the handle cover, a linkage connection is formed between the closing button operating member and the handle cover by inserting the inserting portion into the inserting hole, sliding the operating member limiting portion on the inserting portion into the sliding track groove, and screwing the operating member limiting portion into the track limiting portion; the sliding track groove is connected to the track limiting portion, and the motion track groove is a Z-shaped groove or U-shaped groove structure opened from the direction of the limiting portion toward the side away from the limiting portion, the track limiting portion is distributed on the terminal area of the opened Z-shaped groove or U-shaped groove, the inserting hole is a round hole, and the inserting portion is a shaft-like structure adapted to the inserting hole.
[0028] By providing the limit connection part with an insertion hole as mentioned above, a motion track groove is also involved, wherein the insertion hole and the motion track groove are communicated with each other, and the limit part is synchronously involved in the limit part and the limit connection part. The outer limit part for contacting the limit connection part, the insertion part for extending into the insertion hole, and the operating part limit part obliquely inserted into the insertion part are used. At the same time, the motion track groove mainly includes a sliding track groove for the operating part limit part to pass through and slide, and a track limit part for the operating part limit part to slide and limit. Therefore, when the closing button operating part cooperates with the handle sleeve, the operating part limit part extends into the motion track groove. The position of the sliding track groove of the moving track groove, the synchronous insertion part also extends into the insertion hole. After the insertion part extends into the insertion hole to a certain extent, the operating part limiting part is clamped into the track limiting part of the moving track groove by rotating, and the limiting of the closing button operating part on the handle cover is also realized. By adopting a Z-shaped groove or a U-shaped groove structure for the moving track groove, the operating part limiting part on the closing button operating part is not easy to come out from the track limiting part when the circuit breaker is performing the opening and closing action, thereby ensuring the reliability of the design. This is the fifth solution for the assembly between the closing button operating part and the handle cover.
[0029] The present invention is further configured such that a handle hole is formed on the operating portion relative to a side away from the closing button operating member, and the handle sleeve connecting end includes a placement cavity for placing the operating portion of the handle, and a handle sleeve limiting portion distributed on the cavity wall of the placement cavity and adapted to the handle hole on the operating end. In the stage of cooperation between the handle and the handle sleeve, the operating portion of the handle is placed in the placement cavity, and the operating portion of the handle performs a sliding action in the placement cavity, so that the handle sleeve limiting portion on the cavity wall of the placement cavity is embedded in the handle hole on the operating portion, and is engaged on the handle sleeve through the limiting connecting end, thereby forming a limiting cooperation between the handle sleeve and the handle.
[0030] Through the above arrangement, a reliable connection between the handle sleeve and the handle can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 This is a schematic diagram of the distribution of the handle mechanism on the circuit breaker in a specific embodiment of the utility model;
[0032] Figure 2 This is an exploded diagram of a specific embodiment of the utility model after the handle mechanism is fitted on a circuit breaker;
[0033] Figure 3 This is a schematic diagram of the structure of the handle sleeve and the closing button operating member after they are matched in the specific embodiment 1 of the present utility model;
[0034] Figure 4 yes Figure 3 An enlarged schematic diagram of
[0035] Figure 5 This is an exploded schematic diagram of the second embodiment of the present invention after the handle sleeve and the closing button operating member are engaged;
[0036] Figure 6 yes Figure 5 BB enlarged schematic diagram;
[0037] Figure 7 yes Figure 5 AA enlarged schematic diagram;
[0038] Figure 8 This is an exploded schematic diagram of the second embodiment of the present invention after the handle sleeve and the closing button operating member are engaged;
[0039] Figure 9 This is an exploded schematic diagram of the third embodiment of the present invention after the handle sleeve and the closing button operating member are engaged;
[0040] Figure 10 yes Figure 9 An enlarged schematic diagram of
[0041] Figure 11This is a schematic diagram of the structure of the handle sleeve and the closing button operating member after they are matched in the specific embodiment 4 of the present utility model;
[0042] Figure 12 This is an exploded schematic diagram of the fourth embodiment of the present invention after the handle sleeve and the closing button operating member are engaged;
[0043] Figure 13 yes Figure 12 An enlarged schematic diagram of
[0044] Figure 14 This is a schematic diagram of the structure of the handle sleeve and the closing button operating member after they are matched in the specific embodiment 5 of the present utility model;
[0045] Figure 15 This is an exploded schematic diagram of the fifth embodiment of the present invention after the handle sleeve and the closing button operating member are engaged;
[0046] Figure 16 yes Figure 15 An enlarged schematic diagram of . DETAILED DESCRIPTION
[0047] like Figure 1-16 As shown, a specific embodiment of the present invention is a handle mechanism for a circuit breaker, comprising a handle sleeve 2, a handle 11, and a closing button operating member 3. The handle 11 includes a driving portion 112 facing one side of the circuit breaker 1 and extending into the circuit breaker 1 to be connected to the operating mechanism, and an operating portion 111 extending outside the circuit breaker 1 to drive the driving portion 112. The handle sleeve 2 includes a handle sleeve connecting end 22, which is sleeved on the operating portion 111 of the handle 11 via the handle sleeve connecting end 22. One end of the closing button operating member 3 is linked to the handle sleeve 2, and the other end extends to one side of the closing button on the external circuit breaker 1.
[0048] The handle cover 2 also includes a manipulation end 21 that is distributed on one side toward the operating portion 111 and extends outward and is connected to a mechanism on an external mining explosion-proof distribution box for performing opening and closing operations of the circuit breaker 1; the closing button operating member 3 is detachably connected to the handle cover 2;
[0049] During the closing stage of the circuit breaker 1 in the explosion-proof distribution box for mines, the mechanism for performing the opening and closing operations of the circuit breaker 1 on the explosion-proof distribution box drives the handle sleeve 2 to perform the flip closing operation, and the driving closing button operating member 3 moves toward one side of the closing button on the circuit breaker 1 and performs the contact pressing action before the handle sleeve 2 is driven to perform the flip closing operation.
[0050] The above-mentioned circuit breaker 1 is connected to a handle mechanism involving a closing button operating member 3 and a handle cover 2 used in conjunction with the handle 11, wherein one end of the closing button operating member 3 extends to one side of the closing button on the circuit breaker 1, and the other end is designed to be linked with the handle cover 2. Simultaneously, the handle cover 2 is connected to an operating portion 111 provided for the handle cover 2 and an operating end 21 for connecting to a mechanism on an external mining explosion-proof distribution box for performing opening and closing operations of the circuit breaker 1. As a result, the circuit breaker 1 used in the mining explosion-proof distribution box can be used. After an accidental trip or other opening occurs, the circuit breaker 1 can be closed by driving the mechanism outside the mining explosion-proof distribution box.
[0051] The operating end 21 on the handle cover 2 is actuated, and the handle 11 is driven to actuate via the operating portion 111. When the handle cover 2 is actuated, the closing button operating member 3 linked to the handle cover 2 can be driven in conjunction. That is, through the action of the closing button operating member 3, when the circuit breaker 1 is closed, the closing button operating member 3 first performs the required contact and pressing action on the closing button, thereby ensuring the reliability of the circuit breaker 1 used in the explosion-proof distribution box for mining and the convenience of operation during the closing process of the circuit breaker 1. At the same time, it also avoids the need to open a window on the box body similar to the existing method, and to use a tool to reach into the closing button position on the circuit breaker 1 and press it before performing the subsequent closing operation. The operation is quite cumbersome, and the opening of the window may affect safety.
[0052] There are five specific embodiments for the detachable connection between the closing button operating member 3 and the handle sleeve 2, as follows:
[0053] like Figure 1-4 As shown, embodiment 1: the handle cover 2 also includes a limiting connection part 23 formed on the operating part 111, and the closing button operating part 3 includes a limiting connection end 32 engaged on the handle cover 2, a button operating end 31 extending toward the closing button, and a limiting part 33 distributed on one side of the limiting connection part 23 and in contact with the limiting part 33. The limiting connection part 23 contacts the limiting part 33, and a fastening fit is formed between the limiting part 33 and the limiting connection part 23 through the fastener a, thereby forming a linkage connection between the closing button operating part 3 and the handle cover 2.
[0054] like Figure 5-8 As shown, in Example 2, the handle cover 2 further includes a limiting connection portion 23 formed on the operating portion 111, and an insertion hole c is formed in the limiting connection portion 23. The closing button operating member 3 includes a limiting connection end 32 engaged with the handle cover 2, a button operating end 31 extending toward the closing button, and a limiting portion 33 distributed on one side of the limiting connection portion 23. The limiting portion 33 has an insertion portion b extending into the insertion hole c.
[0055] Between the closing button operating member 3 and the handle cover 2, the limiting connection part 23 passes through the side away from the limiting part 33, extends into the insertion hole c through the fastener a, and forms a tight fit with the insertion part b, constituting a linkage connection between the closing button operating member 3 and the handle cover 2; there is a clearance fit between the insertion hole c and the insertion part b.
[0056] like Figure 9-10 As shown, in Example 3, the handle cover 2 further includes a limiting connection portion 23 formed on the operating portion 111, and an insertion hole c is formed in the limiting connection portion 23. The closing button operating member 3 includes a limiting connection end 32 engaged with the handle cover 2, a button operating end 31 extending toward the closing button, and a limiting portion 33 distributed on one side of the limiting connection portion 23. The limiting portion 33 is formed with an insertion portion b extending into the insertion hole c.
[0057] The interference fit between the outer edge of the insertion portion b and the insertion hole c forms a linkage connection between the closing button operating member 3 and the handle sleeve 2.
[0058] like Figure 11-13 As shown, in Example 4, the handle cover 2 further includes a limiting connection portion 23 formed on the operating portion 111, an insertion hole c is defined in the limiting connection portion 23, and the closing button operating member 3 includes a limiting connection end 32 engaged with the handle cover 2, a button operating end 31 extending toward the closing button, and a limiting portion 33 distributed on one side of the limiting connection portion 23. The limiting portion 33 is formed with an insertion portion b extending into the insertion hole c, and a buckle portion e is formed on the insertion portion b at an end away from the limiting portion 33, and a buckle groove d adapted to the buckle portion e is defined on the wall of the insertion hole c.
[0059] Between the closing button operating member 3 and the handle cover 2, the insertion portion b and the snap portion e extend into the insertion hole c, and the snap portion e is snapped into the snap groove d, forming a limit for the closing button operating member 3 on the handle cover 2 and forming a linkage connection between the closing button operating member 3 and the handle cover 2.
[0060] like Figure 14-16 As shown, in Example 5, the handle cover 2 further includes a limiting connection portion 23 formed on the operating portion 111, and the closing button operating member 3 includes a limiting connection end 32 engaged with the handle cover 2, a button operating end 31 extending toward the closing button, and a limiting portion 33 distributed on one side of the limiting connection portion 23. The limiting connection portion 23 includes an insertion hole c defined therein and a motion track groove g defined therein, and the motion track groove g is communicated with the insertion hole c.
[0061] The limiting portion 33 includes an outer limiting portion 33 that contacts the limiting connection portion 23, an inserting portion b connected to the outer limiting portion 33 and extending into the inserting hole c, and an operating member limiting portion 33 connected to the inserting portion b. The operating member limiting portions 33 and the inserting portion b are arranged in a staggered manner. The motion track groove g includes a sliding track groove g1 for the operating member limiting portion 33 to pass through and slide, and a track limiting portion g2 for the operating member limiting portion 33 to slide and limit.
[0062] During the matching stage of the closing button operating member 3 and the handle cover 2, a linkage connection is formed between the closing button operating member 3 and the handle cover 2 by inserting the inserting part b into the inserting hole c, and by sliding the operating member limiting part 33 on the inserting part b into the sliding track groove g1, and by screwing the operating member limiting part 33 into the track limiting part g2; the sliding track groove g1 is connected to the track limiting part g2, and the motion track groove g is a Z-shaped groove or U-shaped groove structure opened from the direction of the limiting part 33 toward the side away from the limiting part 33, the track limiting part g2 is distributed on the terminal area of the opened Z-shaped groove or U-shaped groove, the inserting hole c is a circular hole, and the inserting part b is an axis-type structure adapted to the inserting hole c.
[0063] like Figure 5-7 As shown, in addition, the connection limit of the handle 11 and the handle sleeve 2 involves: a handle 11 hole is formed on the operating part 111 relative to the side away from the closing button operating part 3, and the handle sleeve connecting end 22 includes a placement cavity for placing the operating part 111 of the handle 11, and a handle sleeve 2 limiting part 33 distributed on the cavity wall of the placement cavity and adapted to the handle 11 hole on the operating end. In the stage of cooperation between the handle 11 and the handle sleeve 2, the operating part 111 of the handle 11 is placed in the placement cavity, and the operating part 111 of the handle 11 performs a sliding action in the placement cavity, so that the handle sleeve 2 limiting part 33 on the cavity wall of the placement cavity is embedded in the handle 11 hole on the operating part 111, and is engaged on the handle sleeve 2 through the limiting connecting end 32, thereby forming a limiting cooperation between the handle sleeve 2 and the handle 11.
Claims
1. A handle mechanism for a circuit breaker, comprising a handle sleeve and a handle, wherein the handle comprises a drive portion extending toward one side of the circuit breaker and into the circuit breaker to connect with an operating mechanism, and an operating portion extending outside the circuit breaker to drive the drive portion. The handle sleeve comprises a handle sleeve connecting end, through which the handle sleeve is sleeved onto the operating portion of the handle, and wherein: The handle mechanism also includes a closing button operating member, one end of which is linked to the handle sleeve and the other end extends to one side of the closing button on the external circuit breaker; The handle sleeve also includes a control end that is distributed on one side toward the operating portion and extends outward and is connected to a mechanism on an external mining explosion-proof distribution box for performing circuit breaker opening and closing operations; Used in the closing stage of the circuit breaker in the mine explosion-proof distribution box, the mechanism on the mine explosion-proof distribution box used to perform the circuit breaker opening and closing operations drives the closing button operating member to move toward one side of the closing button on the circuit breaker and perform a contact pressing action before the handle sleeve is driven to perform the flip closing.
2. The handle mechanism for a circuit breaker according to claim 1, characterized in that: The closing button operating member and the handle sleeve are detachably connected.
3. The handle mechanism for a circuit breaker according to claim 2, characterized in that: The handle cover also includes a limiting connection part formed on the operating part, and the closing button operating part includes a limiting connection end engaged on the handle cover, a button operating end extending toward the closing button, and a limiting part distributed on one side of the limiting connection part and in contact with the limiting part. The limiting connection part contacts the limiting part, and a fastening fit is formed between the limiting part and the limiting connection part through the fastener, thereby forming a linkage connection between the closing button operating part and the handle cover.
4. The handle mechanism for a circuit breaker according to claim 2, wherein: The handle cover also includes a limit connection portion formed on the operating portion, an insertion hole is formed in the limit connection portion, and the closing button operating member includes a limit connection end engaged with the handle cover, a button operating end extending toward the closing button, and a limit portion distributed on one side of the limit connection portion, and an insertion portion is extended into the insertion hole on the limit portion; Between the closing button operating piece and the handle sleeve, the limiting connection part passes through the side away from the limiting part, extends into the insertion hole through the fastener, and forms a tight fit with the insertion part, forming a linkage connection between the closing button operating piece and the handle sleeve.
5. The handle mechanism for a circuit breaker according to claim 2, characterized in that: The handle cover further includes a limit connection portion formed on the operating portion, wherein an insertion hole is formed in the limit connection portion, and the closing button operating member includes a limit connection end engaged with the handle cover, a button operating end extending toward the closing button, and a limit portion distributed on one side of the limit connection portion, wherein an insertion portion is formed on the limit portion and extends into the insertion hole; The interference fit between the outer edge of the insertion portion and the insertion hole forms a linkage connection between the closing button operating member and the handle sleeve.
6. The handle mechanism for a circuit breaker according to claim 2, characterized in that: The handle cover also includes a limiting connection portion formed on the operating portion, an insertion hole is provided in the limiting connection portion, and the closing button operating member includes a limiting connection end engaged with the handle cover, a button operating end extending toward the closing button, and a limiting portion distributed on one side of the limiting connection portion. The limiting portion is formed with an insertion portion extending into the insertion hole, a buckle portion is formed on the insertion portion at an end away from the limiting portion, and a buckle groove adapted to the buckle portion is provided on the hole wall of the insertion hole; Between the closing button operating member and the handle sleeve, the insertion portion and the snap portion extend into the insertion hole, and the snap portion is snapped into the snap groove to form a limit for the closing button operating member on the handle sleeve, and constitute a linkage connection between the closing button operating member and the handle sleeve.
7. The handle mechanism for a circuit breaker according to claim 2, characterized in that: The handle cover also includes a limit connection portion formed on the operating portion, and the closing button operating member includes a limit connection end engaged with the handle cover, a button operating end extending toward the closing button, and a limit portion distributed on one side of the limit connection portion. The limit connection portion includes an insertion hole formed thereon and a motion track groove formed thereon, and the motion track groove is connected to the insertion hole. The limiting portion includes an outer limiting portion that abuts against the limiting connection portion, an inserting portion connected to the outer limiting portion and extending into the inserting hole, and an operating member limiting portion connected to the inserting portion. The operating member limiting portion and the inserting portion are staggered. The motion track groove includes a sliding track groove for the operating member limiting portion to pass through and slide, and a track limiting portion for the operating member limiting portion to slide and limit. During the coordination stage between the closing button operating member and the handle cover, a linkage connection is formed between the closing button operating member and the handle cover by inserting the inserting portion into the inserting hole, sliding the operating member limiting portion on the inserting portion into the sliding track groove, and screwing the operating member limiting portion into the track limiting portion.
8. The handle mechanism for a circuit breaker according to claim 3, 4, 5, 6 or 7, characterized in that: A handle hole is formed on the operating part of the handle relative to the side away from the closing button operating part. The handle sleeve connecting end includes a placement cavity for placing the operating part of the handle, and a handle sleeve limiting part distributed on the cavity wall of the placement cavity and adapted to the handle hole on the operating end. In the stage of cooperation between the handle and the handle sleeve, the operating part of the handle is placed in the placement cavity, and the operating part of the handle performs a sliding action in the placement cavity, so that the handle sleeve limiting part on the cavity wall of the placement cavity is embedded in the handle hole on the operating part, and is engaged on the handle sleeve through the limiting connecting end, thereby forming a limiting cooperation between the handle sleeve and the handle.
9. The handle mechanism for a circuit breaker according to claim 4, characterized in that: There is a clearance fit between the insertion hole and the insertion portion.
10. The handle mechanism for a circuit breaker according to claim 7, characterized in that: The sliding track groove is connected to the track limiting part, and the motion track groove is a Z-shaped groove or U-shaped groove structure opened from the limiting part toward the side away from the limiting part. The track limiting part is distributed on the terminal area of the opened Z-shaped groove or U-shaped groove, the insertion hole is a circular hole, and the insertion part is an axis-type structure adapted to the insertion hole.