A tripping structure

Abstract

This utility model discloses a release structure, including: a traction rod comprising a body and a drive unit, one end of the drive unit being connected to the body, the other end of the drive unit extending outward, and a cavity provided at the end of the drive unit away from the body; the bottom surface of the cavity is located on the movement trajectory of the release button, and the release button drives the traction rod to rotate; during the release process, the release button moves vertically downward, and then the release button enters the cavity, and the release button abuts against the bottom surface of the cavity to achieve the driving effect of the release button, and after the release button enters the cavity, the side wall of the cavity forms a limiting effect, restricting the sliding of the release button in the horizontal direction, so that the release button cannot deviate towards the edge of the drive unit, and the release button will not jam with the traction rod.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, specifically to a tripping structure. Background Technology

[0002] In circuit breakers, especially molded case circuit breakers, the trip rod is a crucial component in the tripping process. For example, when the circuit breaker trips freely, the trip button moves vertically downwards, its lower end abutting against the trip rod, causing the rod to rotate. This, in turn, drives the remaining components of the operating mechanism, ultimately achieving the tripping effect. However, in existing technology, because the contact surface between the trip rod and the trip button is planar, the trip button is prone to shifting to the side during downward pressing, causing jamming between the button and the trip rod. This prevents the trip rod from resetting, rendering the circuit breaker unable to perform opening and closing operations. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is how to prevent the release button and the traction rod from getting stuck. A release structure includes:

[0004] A tow bar, comprising a body and a drive unit, one end of the drive unit being connected to the body, the other end of the drive unit extending outward, and a recessed cavity at the end of the drive unit away from the body;

[0005] The release button has its bottom surface located on the movement trajectory of the release button, and the release button drives the traction rod to rotate.

[0006] The sides of the cavity form a ring structure, and the number of sides of the cavity is at least three.

[0007] The bottom surface of the cavity is provided with a guide groove, and the lower end of the trip button moves into the guide groove.

[0008] The lower end of the trip button is provided with a first guide surface.

[0009] The opening end of the cavity is provided with a second guide surface.

[0010] The traction rod also includes a reinforcing part, which connects the drive part to the body.

[0011] It also includes a housing, the housing having a mounting cavity, the trip button being housed in the mounting cavity, and an elastic element being fixed in the mounting cavity, the elastic element being sleeved on the trip button.

[0012] The mounting cavity includes a stepped hole, a narrow hole, and a lower through hole. The narrow hole connects the stepped hole and the lower through hole. The elastic element is accommodated in the stepped hole. The trip button includes a pressing part, a rod part, and a pressing part. The pressing part is connected to one end of the rod part. The elastic element is sleeved on the rod part. The other end of the rod part is connected to the pressing part. The pressing part is accommodated in the stepped hole. A portion of the rod part is accommodated in the stepped hole. The remaining portion of the rod part is accommodated in the narrow hole. The pressing part is accommodated in the lower through hole. A limiting part is provided on the side of the pressing part. The limiting part and the bottom surface of the narrow hole form a limiting structure.

[0013] The release button is provided with a through groove that extends from the rod to the pressing part.

[0014] The technical solution of this utility model has the following advantages:

[0015] 1. The present invention provides a tripping structure in which, during the tripping process, the tripping button moves vertically downward and then enters the cavity. The tripping button abuts against the bottom surface of the cavity, thereby achieving the driving effect of the tripping button. Moreover, after the tripping button enters the cavity, the side wall of the cavity forms a limiting effect, restricting the sliding of the tripping button in the horizontal direction, so that the tripping button cannot deviate towards the edge of the driving part, and the tripping button will not get stuck with the traction rod.

[0016] 2. The release structure provided by this utility model is a ring-shaped structure that forms a closed structure to prevent the release button from shifting or sliding. Alternatively, a semi-enclosed structure can be used, that is, an opening on one side of the body and a closed structure on the other sides.

[0017] 3. The tripping structure provided by this utility model has a guide groove that can guide and position the lower end of the tripping button, ensuring that the tripping button trips under normal tripping conditions and better realizing the tripping operation.

[0018] 4. The tripping structure provided by this utility model has a first guide surface that forms a guiding effect. When the tripping button moves downward, the lower end of the tripping button abuts against the side top of the cavity or guide groove, which can play a guiding effect, so that the tripping button finally enters the guide groove.

[0019] 5. The tripping structure provided by this utility model has a second guide surface that serves as a guide for the tripping button, making it easier for the tripping button to enter the cavity.

[0020] 6. The tripping structure provided by this utility model has a reinforcing part that improves the strength of the drive part.

[0021] 7. The release structure provided by this utility model has an elastic element that serves to reset the release button.

[0022] 8. The tripping structure provided by this utility model improves the fixing effect of the tripping button by cooperating with the mounting cavity and the tripping button, and the tripping button will not fall off during use.

[0023] 9. The release structure provided by this utility model has a through groove, which makes the rod and the pressing part have a certain elastic effect, making it easy to install and fix. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 A cross-sectional view of a tripping structure provided by this utility model;

[0026] Figure 2 A partially enlarged view of a tripping structure provided by this utility model;

[0027] Figure 3 A cross-sectional view of a tripping structure provided by this utility model from another angle;

[0028] Figure 4 A cross-sectional view of another form of the tripping structure provided by this utility model;

[0029] Figure 5 A schematic diagram of the structure of the traction rod provided by this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 11. Traction rod; 12. Body; 13. Drive unit; 14. Release button; 15. Reinforcing part; 16. Housing; 17. Elastic element; 131. Cavity; 132. Guide groove; 141. First guide surface; 142. Pressing part; 143. Rod part; 145. Pressing part; 146. Limiting part; 147. Through groove; 161. Mounting cavity; 162. Top cover; 163. Middle cover; 1311. Second guide surface; 1611. Stepped hole; 1612. Narrow hole; 1613. Lower through hole. Detailed Implementation

[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 mechanical connection or an electrical 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 utility model based on the specific circumstances.

[0035] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0036] Example 1

[0037] This embodiment provides a tripping structure, as shown in the attached figure. Figures 1-5 As shown, it includes:

[0038] The traction rod 11 includes a body 12 and a drive unit 13. The body 12 cooperates with the rest of the operating mechanism in the circuit breaker to perform opening and closing operations. This is prior art and will not be described in detail in this embodiment. One end of the drive unit 13 is connected to the body 12. In this embodiment, the body 12 is similar to a cylindrical structure, and the drive unit 13 is connected to the body 12 in the radial direction. The other end of the drive unit 13 extends outward, specifically referring to the side away from the body 12. A cavity 131 is provided at the end of the drive unit 13 away from the body 12.

[0039] The bottom surface of the cavity 131 is located on the movement trajectory of the trip button 14. Specifically, the movement trajectory refers to the vertical downward movement of the trip button 14 relative to the housing. When the trip button 14 moves downward, the bottom surface of the cavity 131 is located on the downward movement trajectory of the trip button 14. When the trip button 14 abuts against the bottom surface of the cavity 131, the trip button 14 drives the traction rod 11 to rotate. The traction rod 11 rotates as a whole, thereby achieving the effect of tripping and opening the circuit breaker, that is, the separation of the moving and stationary contacts inside the circuit breaker. During the tripping process, the tripping button 14 moves vertically downwards and then enters the cavity 131. The tripping button 14 abuts against the bottom surface of the cavity 131, thereby achieving the driving effect of the tripping button 14. Moreover, after the tripping button 14 enters the cavity 131, the side wall of the cavity 131 forms a limiting effect, restricting the sliding of the tripping button 14 in the horizontal direction. This prevents the tripping button 14 from shifting towards the edge of the drive unit 13, and also prevents the tripping button 14 from getting stuck with the traction rod 11.

[0040] Specifically, as shown in the attached document Figures 1-4 As shown, the sides of the cavity 131 form a ring structure, and the number of sides of the cavity 131 is at least three. When the number of sides of the cavity 131 is three, a triangular structure is formed; when the number of sides of the cavity 131 is four, a quadrangular structure is formed; and when the number of sides is infinite, a cylindrical structure is formed. For optimization, a straight prism structure can be formed, such as a straight triangular prism, a straight quadrangular prism, etc. Those skilled in the art can choose different numbers of sides according to actual needs. The ring structure forms a closed structure to prevent the trip button 14 from shifting or sliding. Alternatively, a semi-enclosed structure can be used, for example, including two sides forming a V-shaped structure with the V-shaped opening towards the body 12; or including three sides forming a U-shaped structure with the U-shaped opening towards the body 12.

[0041] Specifically, the cross-sectional area of ​​the cavity 131 is larger than the cross-sectional area of ​​the lower end of the trip button 14. In other words, when the lower end of the trip button 14 enters the cavity 131, the lower end of the trip button 14 still has a certain amount of room to move. The area difference between the two can be adjusted by those skilled in the art according to actual needs.

[0042] Specifically, the depth of cavity 131 can also be adjusted according to actual needs.

[0043] Specifically, as shown in the attached document Figures 1-4As shown, the bottom surface of the cavity 131 is provided with a guide groove 132, and the lower end of the trip button 14 moves into the guide groove 132. The guide groove 132 guides and positions the lower end of the trip button 14, ensuring that the trip button 14 trips under normal tripping conditions, thus better realizing the tripping operation. Here, the cross-sectional area of ​​the guide groove 132 is adapted to the cross-sectional area of ​​the lower end of the trip button 14, that is, the difference between the two is small, forming a guiding effect. When the cross-sectional shape of the guide groove 132 is circular, the cross-sectional shape of the lower end of the trip button 14 can be circular, square, or other polygonal, thus forming an circumscribed circle structure; or, the cross-sectional shape of the guide groove 132 is other polygonal, and the lower end of the trip button 14 is embedded in the guide groove 132. Those skilled in the art can adjust the shape between the two according to actual needs.

[0044] Specifically, as shown in the attached document Figures 1-4 As shown, the lower end of the trip button 14 is provided with a first guide surface 141. The first guide surface 141 provides a guiding effect. When the trip button 14 moves downward, and its lower end abuts against the side top of the cavity 131 or the guide groove 132, it provides a guiding effect, allowing the trip button 14 to eventually enter the guide groove 132. Here, the first guide surface 141 can be an arc surface or an inclined surface.

[0045] Specifically, as shown in the attached document Figures 1-4 As shown, the opening end of the cavity 131 is provided with a second guide surface 1311. Specifically, the opening end refers to the end facing the trip button 14. The second guide surface 1311 serves to guide and engage with the trip button 14, making it easier for the trip button 14 to enter the cavity 131. Here, the second guide surface 1311 can be an arc surface or a sloped surface. In addition, the sidewalls of the guide groove 132 can also be provided with guide structures to create a guiding effect.

[0046] Specifically, as shown in the attached document Figure 5 As shown, the traction rod 11 also includes a reinforcing part 15, which connects the drive part 13 and the body 12. The reinforcing part 15 improves the strength of the drive part 13. In this embodiment, the reinforcing part 15 has a triangular structure, with one side connected to the bottom surface of the drive part 13 and the other side connected to the side where the body 12 and the drive part 13 are connected.

[0047] Specifically, the traction rod 11 is a one-piece molded structure, namely, a one-piece molded reinforcing part 15, a body 12, and a driving part 13.

[0048] Specifically, as shown in the attached document Figures 1-4As shown, it also includes a housing 16, which has a mounting cavity 161. The trip button 14 is housed in the mounting cavity 161 and moves vertically up and down along the mounting cavity 161. An elastic element 17 is fixed in the mounting cavity 161 and is sleeved on the trip button 14. The elastic element 17 serves to reset the trip button 14.

[0049] Specifically, as shown in the attached document Figures 1-4 As shown, the mounting cavity 161 includes a stepped hole 1611, a narrow hole 1612, and a lower through hole 1613. The narrow hole 1612 connects the stepped hole 1611 and the lower through hole 1613. In this embodiment, the central axis of the stepped hole 1611, the central axis of the narrow hole 1612, and the central axis of the lower through hole 1613 are coaxially arranged. Moreover, the diameter of the narrow hole 1612 is smaller than the diameter of the stepped hole 1611 and the diameter of the lower through hole 1613. The elastic element 17 is accommodated in the stepped hole 1611. The trip button 14 includes a pressing part 142, a rod part 143, and a pressing part 145. The pressing part 142 is connected to one end of the rod part 143, the elastic element 17 is sleeved on the rod part 143, and the other end of the rod part 143 is connected to the pressing part 145. One end of the elastic member 17 abuts against the bottom surface of the stepped hole 1611, and the other end of the elastic member 17 abuts against the pressing part 142. The pressing part 142 is accommodated in the stepped hole 1611, a portion of the rod part 143 is accommodated in the stepped hole 1611, the remaining portion of the rod part 143 is accommodated in the narrow hole 1612, and the pressing part 145 is accommodated in the lower through hole 1613. In this embodiment, the central axis of the pressing part 142, the central axis of the rod part 143, and the central axis of the pressing part 145 are coaxially arranged. Here, the diameter of the rod part 143 is smaller than the diameter of the pressing part 145 and the diameter of the pressing part 142. A limiting part 146 is provided on the side of the pressing part 145, and the limiting part 146 and the bottom surface of the narrow hole 1612 form a limiting structure. Specifically, this limiting structure means that when the release button 14 moves vertically upward, the limiting part 146 abuts against both sides of the bottom surface of the narrow hole 1612, forming a limiting and fixing effect, at which time the release button 14 cannot fall off. The cooperation between the mounting cavity 161 and the release button 14 improves the fixing effect of the release button 14, and the release button 14 will not fall off during use.

[0050] Specifically, as shown in the attached document Figures 1-4As shown, the release button 14 has a through groove 147 extending from the rod 143 to the pressing part 145. The through groove 147 creates a certain elasticity between the rod 143 and the pressing part 145. During installation, the rod 143 and the pressing part 145 deform under stress, allowing the pressing part 145 to pass through the narrow hole 1612 and enter the lower through hole 1613, facilitating installation. In this embodiment, the pressing part 145 moves into the guide groove 132, abutting against the bottom surface of the cavity 131, driving the drive part 13 to move and achieving the rotation effect of the traction rod 11. The pressing part 145 and the bottom surface of the cavity 131 are in line contact. The first guide surface 141 is also provided on the lower end of the pressing part 145.

[0051] Specifically, the housing 16 includes an upper cover 162 and a middle cover 163, which cooperate to form a mounting cavity 161. In addition, the housing 16 also includes a base, which cooperates with the middle cover 163 to form a receiving cavity. The receiving cavity houses the traction rod 11 and other components of the operating structure. The receiving cavity also houses stationary contacts, moving contacts, and other components, which are irrelevant to this embodiment and will not be described in detail.

[0052] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A trip structure characterized by, include: The traction rod (11) includes a body (12) and a drive part (13). One end of the drive part (13) is connected to the body (12), and the other end of the drive part (13) extends outward. A cavity (131) is provided at the end of the drive part (13) away from the body (12). The bottom surface of the cavity (131) is located on the movement trajectory of the release button (14), and the release button (14) drives the traction rod (11) to rotate.

2. The trip structure of claim 1, wherein, The sides of the cavity (131) form an annular structure, and the number of sides of the cavity (131) is at least three.

3. The trip structure of claim 1, wherein, The bottom surface of the cavity (131) is provided with a guide groove (132), and the lower end of the trip button (14) moves into the guide groove (132).

4. The trip structure of claim 1, wherein, The lower end of the trip button (14) is provided with a first guide surface (141).

5. The trip structure of claim 1, wherein, The cavity (131) has a second guide surface (1311) at its open end.

6. The trip structure of claim 1, wherein, The traction rod (11) also includes a reinforcing part (15), which connects the drive part (13) and the body (12).

7. The trip structure of claim 1, wherein, It also includes a housing (16), which has a mounting cavity (161), the trip button (14) is housed in the mounting cavity (161), and an elastic element (17) is fixed in the mounting cavity (161), the elastic element (17) being sleeved on the trip button (14).

8. The trip structure of claim 7, wherein, The mounting cavity (161) includes a stepped hole (1611), a narrow hole (1612), and a lower through hole (1613). The narrow hole (1612) connects the stepped hole (1611) and the lower through hole (1613). The elastic element (17) is accommodated in the stepped hole (1611). The trip button (14) includes a pressing part (142), a rod part (143), and a pressing part (145). The pressing part (142) is connected to one end of the rod part (143), and the elastic element (17) is sleeved on the rod part (143). On the rod (143), the other end of the rod (143) is connected to the pressing part (145); the pressing part (142) is accommodated in the stepped hole (1611), part of the rod (143) is accommodated in the stepped hole (1611), the rest of the rod (143) is accommodated in the narrow hole (1612), the pressing part (145) is accommodated in the lower through hole (1613), and a limiting part (146) is provided on the side of the pressing part (145), and the limiting part (146) and the bottom surface of the narrow hole (1612) form a limiting structure.

9. The trip structure of claim 8, wherein, The release button (14) is provided with a through groove (147) that extends from the rod (143) to the pressing part (145).

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