Knob handle and motor protection device
By introducing a combination design of the main limit structure and the auxiliary limit structure on the knob handle, the device failure problem caused by excessive rotation of the knob handle is solved, and the reliable limit function of the knob handle is realized.
Patent Information
- Application Number
- CN202422442205.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-09
AI Technical Summary
The existing knob handle structure is unreasonable, and the operator can easily cause the knob handle to cross the limit feature when it rotates excessively, resulting in the failure of the motor protection device.
A knob handle is designed, adopting a combination of a main limit structure and an auxiliary limit structure. Through the cooperation between the main limit structure and the first stop and the second stop, the rotation of the knob is restricted and the limit feature is avoided.
Effectively reduce the possibility of the knob passing at the limit feature, ensure the normal limiting function of the knob handle and motor protection device, and avoid device failure.
Smart Images
Figure CN223273159U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electrical equipment, and in particular to a knob handle and a motor protection device. Background Art
[0002] A motor protector, also known as a motor protector or motor circuit breaker, is a specialized device installed on the motor control panel. It promptly disconnects power to the motor in the event of a fault such as overcurrent, undercurrent, phase failure, stall, overheating, or motor overload, preventing damage.
[0003] A motor protector typically consists of a knob, a connecting rod, and a motor protector body. The knob is connected to the motor protector body via the connecting rod. The motor protector body is also connected to the motor. Rotating the knob controls the motor protector body to close or open, thereby powering the motor on or off.
[0004] However, the existing knob handle structure is not designed properly. Once the operator rotates the knob handle too hard, it will easily cause the knob handle to go beyond the limit feature, causing the motor protection device including the knob handle to fail. Utility Model Content
[0005] The present application provides a knob handle and a motor protection device, which can reduce the possibility of the knob exceeding the limiting feature on the housing when rotating in a first direction, thereby avoiding failure of the motor protection device including the knob handle.
[0006] In a first aspect, the present application provides a knob handle connected to a Mabao body via a connecting rod. The knob handle comprises a housing and a knob. The housing has a mounting slot, the walls of which are provided with a first stopper and a second stopper. The knob includes a mounting portion located within the mounting slot, and the knob is rotatable relative to the housing.
[0007] The mounting portion is provided with a primary limit structure and a secondary limit structure, with a first stopper located along the rotation path of the primary limit structure and a second stopper located along the rotation path of the secondary limit structure. When the knob rotates in a first direction relative to the housing, the primary limit structure abuts the first stopper, and the secondary limit structure abuts the second stopper, thereby restricting further rotation of the knob in the first direction.
[0008] Through the above solution, when the knob rotates in the first direction relative to the housing, the main limiting structure can abut against the first stopper, thereby limiting the main limiting structure through the first stopper. Furthermore, the auxiliary limiting structure can abut against the second stopper, thereby limiting the auxiliary limiting structure through the second stopper. In other words, the present application can not only limit the rotation of the knob in the first direction through the cooperation between the main limiting structure and the first stopper, but also limit the rotation of the knob in the first direction through the cooperation between the auxiliary limiting structure and the second stopper.
[0009] Based on this, when an operator forcefully rotates the knob of the knob handle in the first direction, even if the primary limit structure tends to exceed the first stop, if the knob is also provided with an auxiliary limit structure, the auxiliary limit structure cooperates with the second stop to prevent the knob from excessively rotating in the first direction relative to the housing, thereby preventing the primary limit structure from exceeding the first stop. This reduces the possibility of the knob exceeding the limit feature on the housing when rotating in the first direction, ensuring that the limit feature on the housing can properly limit the rotation of the knob in the first direction, thereby preventing failure of the motor protection device including the knob handle.
[0010] In a possible design, the main limiting structure abuts against the first stopper while the auxiliary limiting structure abuts against the second stopper.
[0011] Through the above solution, the primary and secondary limiting structures on the knob can simultaneously abut corresponding limiting features on the housing. When the operator forcefully rotates the knob of the knob handle in the first direction, the primary and secondary limiting structures can work synergistically to exert a simultaneous limiting effect, doubling the limiting effect of the housing on the knob. This effectively reduces the possibility of the knob exceeding the limiting features on the housing when forcefully rotated in the first direction, and effectively prevents failure of the motor protection device including the knob handle.
[0012] In one possible design, when the knob rotates relative to the housing in the second direction, the auxiliary limit structure can abut against the first stop when the main limit structure abuts against the second stop, thereby limiting further rotation of the knob in the second direction. The second direction is opposite to the first direction.
[0013] Through the above solution, the main limit structure abuts against the second stopper, allowing the second stopper to limit the main limit structure. Furthermore, the auxiliary limit structure abuts against the first stopper, allowing the first stopper to limit the auxiliary limit structure. In other words, the present application can not only limit the rotation of the knob in the second direction through the cooperation between the main limit structure and the second stopper, but also through the cooperation between the auxiliary limit structure and the first stopper.
[0014] Based on this, when the operator forcibly rotates the knob of the knob handle in the second direction, even if the primary limit structure tends to exceed the second stop, if the knob is also provided with an auxiliary limit structure, the auxiliary limit structure cooperates with the first stop to prevent the knob from excessively rotating in the second direction relative to the housing, thereby preventing the primary limit structure from exceeding the second stop. This reduces the possibility of the knob exceeding the limit feature on the housing when rotating in the second direction, ensuring that the limit feature on the housing can properly limit the rotation of the knob in the second direction, thereby preventing failure of the motor protection device including the knob handle.
[0015] In a possible design, the main limiting structure abuts against the second stopper while the auxiliary limiting structure abuts against the first stopper.
[0016] Through the above solution, the primary and secondary limiting structures on the knob can simultaneously abut corresponding limiting features on the housing. When the operator forcefully rotates the knob of the knob handle in the second direction, the primary and secondary limiting structures can work synergistically, exerting a simultaneous limiting effect, doubling the limiting effect of the housing on the knob. This effectively reduces the possibility of the knob exceeding the limiting features on the housing when forcefully rotated in the second direction, and effectively prevents failure of the motor protection device including the knob handle.
[0017] In one possible design, there is one auxiliary limiting structure, which includes a first limiting wall and a second limiting wall. The first limiting wall is positioned adjacent to the first stop, and the second limiting wall is positioned adjacent to the second stop. When the knob is rotated in the first direction, the second limiting wall can abut against the second stop. When the knob is rotated in the second direction, the first limiting wall can abut against the first stop.
[0018] Through the above scheme, when the knob rotates in the first direction relative to the shell, the wall of the auxiliary limiting structure close to the second stop block can abut against the second stop block to assist the cooperation between the main limiting structure and the first stop block, so as to limit the knob from rotating excessively in the first direction relative to the shell, and cause the knob to pass the limiting feature on the shell.
[0019] During the process of the knob rotating in the second direction relative to the shell, the wall of the auxiliary limiting structure close to the first stop block can abut against the first stop block to assist the cooperation between the main limiting structure and the second stop block to limit the knob from rotating excessively in the second direction relative to the shell, so that the knob passes the limiting feature on the shell.
[0020] In one possible design, the auxiliary limiting structure includes a first sub-limiting structure and a second sub-limiting structure, wherein the first sub-limiting structure is disposed proximate to the first stop, and the second sub-limiting structure is disposed proximate to the second stop. When the knob is rotated in the first direction, the side of the second sub-limiting structure proximate to the second stop can abut against the second stop. When the knob is rotated in the second direction, the side of the first sub-limiting structure proximate to the first stop can abut against the first stop.
[0021] With the above solution, when there are two auxiliary limiting structures, during the process of rotating the knob in the first direction, the side of the second sub-limiting structure close to the second stop can abut against the second stop, thereby assisting the cooperation between the main limiting structure and the first stop, and limiting the knob from rotating excessively in the first direction relative to the housing, thereby preventing the knob from passing over the limiting feature on the housing. During the process of rotating the knob in the second direction, the side of the first sub-limiting structure close to the first stop can abut against the first stop, thereby assisting the cooperation between the main limiting structure and the second stop, and limiting the knob from rotating excessively in the second direction relative to the housing, thereby preventing the knob from passing over the limiting feature on the housing.
[0022] In a possible design, the main limiting structure and the mounting portion are integrally formed, or the main limiting structure and the mounting portion are detachably connected.
[0023] Through the above scheme, the main limiting structure and the mounting part are integrally formed, which can save the assembly process of the main limiting structure and the mounting part, and can ensure the strength of the connection between the main limiting structure and the mounting part, reducing the possibility of the main limiting structure falling off from the mounting part.
[0024] The main limit structure is detachably connected to the mounting portion. If the main limit structure becomes damaged after a period of use and abuts against the limit features on the housing, the main limit structure can be easily removed from the mounting portion for replacement, reducing the possibility of the entire knob being scrapped. In addition, the main limit structure of the appropriate size can be easily connected to the mounting portion according to the specified different rotation angles of the knob, thereby increasing the applicability of the knob.
[0025] In a possible design, the auxiliary limiting structure and the mounting portion are integrally formed, or the auxiliary limiting structure and the mounting portion are detachably connected.
[0026] Through the above solution, the auxiliary limiting structure and the mounting part are integrally formed, which can save the assembly process of the auxiliary limiting structure and the mounting part, and can ensure the strength of the connection between the auxiliary limiting structure and the mounting part, reducing the possibility of the auxiliary limiting structure falling off from the mounting part.
[0027] The auxiliary stopper is detachably connected to the mounting portion. If the auxiliary stopper becomes damaged over time and abuts against the stopper feature on the housing, the auxiliary stopper can be easily removed from the mounting portion for replacement, reducing the likelihood of the knob being scrapped. Furthermore, the appropriate size of the auxiliary stopper can be easily connected to the mounting portion according to the specified knob rotation angle, thereby increasing the knob's applicability.
[0028] In one possible design, when the primary limiting structure abuts the first stopper, the overlap between the primary limiting structure and the first stopper is greater than or equal to a first preset value. And / or, when the secondary limiting structure abuts the second stopper, the overlap between the secondary limiting structure and the second stopper is greater than or equal to a second preset value.
[0029] By setting the first preset value, it is possible to ensure that the main limiting structure and the first stopper have sufficient contact area when they abut against each other, thereby ensuring that the first stopper reliably limits the main limiting structure without affecting the arrangement of other structural components within the housing or the realization of other performances. By setting the second preset value, it is possible to ensure that the auxiliary limiting structure and the second stopper have sufficient contact area when they abut against each other, thereby ensuring that the second stopper reliably limits the auxiliary limiting structure without affecting the arrangement of other structural components within the housing or the realization of other performances.
[0030] In a second aspect, the present application provides a motor protection device, which includes a motor protection body, a connecting rod and the knob handle in the first aspect, and the motor protection body and the knob handle are connected by the connecting rod.
[0031] The beneficial effects of the motor protection device provided in the second aspect and each possible design of the second aspect can be referred to the beneficial effects brought about by the first aspect and each possible implementation method of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 This is a schematic diagram of the combined structure of a knob handle provided in an embodiment of the present application at one viewing angle.
[0033] Figure 2 This is a partial structural exploded diagram of a knob handle provided in an embodiment of the present application.
[0034] Figure 3 This is a structural schematic diagram of a shell provided in an embodiment of the present application.
[0035] Figure 4 This is a structural diagram of a knob provided in an embodiment of the present application.
[0036] Figure 5 This is a schematic diagram of the combined structure of a knob handle provided in an embodiment of the present application from another perspective.
[0037] Figure 6 yes Figure 5 Cross-sectional view along section AA.
[0038] Description of reference numerals:
[0039] 100, knob handle;
[0040] 110. Positioning core; 111. Connecting hole;
[0041] 120, housing; 121, mounting slot; 1211, first stopper; 1212, second stopper;
[0042] 130. Knob; 131. Mounting portion; 132. Main limiting structure; 133. Auxiliary limiting structure; 1331. First sub-limiting structure; 1332. Second sub-limiting structure. DETAILED DESCRIPTION
[0043] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover non-exclusive inclusions.
[0045] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0046] The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists, A and B exist, and B exists. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.
[0047] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the current limiting module of the present application. For example, in the description of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application.
[0048] In addition, the terms "first", "second", etc. in the description and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more such features.
[0049] In the description of this application, unless otherwise specified, "plurality" means more than two (including two), and similarly, "multiple groups" means more than two (including two).
[0050] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure can refer to a physical connection. For example, the physical connection can be a fixed connection, such as a fixed connection through a barrier, such as a fixed connection through screws, bolts, or other barrier; the physical connection can also be a detachable connection, such as a mutual snap connection or snap connection; the physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0051] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
[0052] Figure 1 This is a schematic diagram of the combined structure of a knob handle provided in an embodiment of the present application at one viewing angle. The present application provides a motor protection device, which includes a motor protection body, a connecting rod and a Figure 1 The knob handle 100 shown. The Ma Bao body and the knob handle 100 are connected by a connecting rod.
[0053] The main body of the Mabao can be a circuit breaker. The connecting rod can be in the shape of a quadrangular prism or other possible shapes.
[0054] Figure 2 This is a partial structural exploded diagram of a knob handle provided in an embodiment of the present application, combined with Figure 1 and Figure 2 The knob handle 100 includes a positioning core 110 , and a connecting hole 111 is provided on the positioning core 110 .
[0055] One end of the connecting rod extends into the connecting hole 111 and is connected to the connecting hole 111 to achieve the connection between one end of the connecting rod and the positioning core 110. The other end of the connecting rod is connected to the Ma Bao body to achieve the connection between the knob handle 100 and the Ma Bao body through the connecting rod. The specific structure of the knob handle 100 will be described in detail later and will not be expanded here.
[0056] Motor protectors are typically installed in power distribution cabinets. The knob handle 100 is typically mounted on the cabinet door, partially exposed outside the door, while the motor protector itself resides inside the cabinet. After the knob handle 100 is connected to the motor protector via a connecting rod, the operator can control the motor protector to close or open the circuit breaker by rotating the knob handle 100 from outside the cabinet.
[0057] The motor protector is also connected to the motor, allowing the device to be connected to the motor's circuit. When the motor protector is closed, the motor's circuit is turned on, allowing the motor to operate normally. Conversely, when the motor protector is open, the motor's circuit is disconnected, de-energizing the motor and stopping operation. This allows the motor protector to control and protect the motor's circuit.
[0058] The knob handle 100 provided in the embodiment of the present application can reduce the possibility that the knob handle 100 exceeds the limiting feature when the operator rotates the knob handle 100 with force, and ensure that the limiting feature of the knob handle 100 can normally limit the rotation of the knob 130. Therefore, the present application can reduce the knob handle 100 and reduce the possibility of failure of the motor protection device including the knob handle 100.
[0059] The specific structure of the knob handle 100 provided in this application will be described in detail below with reference to the accompanying drawings.
[0060] like Figure 2 As shown, the knob handle 100 provided in the present application includes a housing 120 and a knob 130 . Figure 3 This is a schematic diagram of the structure of a housing provided in an embodiment of the present application. Figure 3 As shown, the housing 120 is provided with a mounting groove 121 , and a groove wall of the mounting groove 121 is provided with a first stopper 1211 and a second stopper 1212 .
[0061] The housing 120 is the basic structure of the knob handle 100. The housing 120 is provided with a mounting position for mounting the knob 130 and a mounting position for mounting the aforementioned positioning core 110, so that the knob 130 and the positioning core 110 can be mounted on the housing 120.
[0062] like Figure 3 As shown, the housing 120 is further provided with a mounting slot 121. The mounting slot 121 may be as follows: Figure 3 The annular groove shown in FIG. The annular groove includes an inner ring wall located on the inner ring and an outer ring wall located on the outer ring. The first stopper 1211 and the second stopper 1212 can both be located on the inner ring wall or both on the outer ring wall. Alternatively, one of the first stopper 1211 and the second stopper 1212 can be located on the outer ring wall, and the other of the first stopper 1211 and the second stopper 1212 can be located on the inner ring wall. This application does not limit the specific locations of the first stopper 1211 and the second stopper 1212.
[0063] The first stop 1211 and the second stop 1212 are equivalent to the aforementioned stop features of the knob handle 100. The first stop 1211 and the second stop 1212 are spaced apart to limit the rotation of the knob 130. Furthermore, the first stop 1211 and the second stop 1212 can be located on a radial line of the mounting slot 121.
[0064] Figure 4 This is a schematic diagram of the structure of a knob provided in an embodiment of the present application, combined with Figure 3 and Figure 4 The knob 130 includes a mounting portion 131 located within the mounting slot 121, allowing the knob 130 to rotate relative to the housing 120. The mounting portion 131 is provided with a primary limiting structure 132 and a secondary limiting structure 133. A first stopper 1211 is located along the rotation path of the primary limiting structure 132, and a second stopper 1212 is located along the rotation path of the secondary limiting structure 133. When the knob 130 rotates relative to the housing 120 in a first direction, when the primary limiting structure 132 abuts the first stopper 1211, the secondary limiting structure 133 abuts the second stopper 1212, thereby restricting further rotation of the knob 130 in the first direction.
[0065] Mounting portion 131 is an annular wall of knob 130 that faces toward housing 120 and is capable of extending into mounting slot 121. Mounting portion 131 is adapted to mounting slot 121. Once positioned within mounting slot 121, rotating knob 130 allows mounting portion 131 to rotate within mounting slot 121. In other words, knob 130 is rotatable relative to housing 120.
[0066] like Figure 4As shown, the mounting portion 131 is provided with a main limiting structure 132 and an auxiliary limiting structure 133. The main limiting structure 132 and the auxiliary limiting structure 133 are arranged at intervals. Assuming that the first stopper 1211 and the second stopper 1212 are connected, the main limiting structure 132 can be located on one side of the line connecting the first stopper 1211 and the second stopper 1212, and the auxiliary limiting structure 133 can be located on the other side of the line connecting the second stopper 1212 and the second stopper 1212.
[0067] The main limiting structure 132 and the auxiliary limiting structure 133 can be structures of any shape, such as a cubic block structure or a rectangular block structure. This application does not make any specific restrictions on this. It is sufficient as long as the main limiting structure 132 can abut against the first stop block 1211 and the auxiliary limiting structure 133 can abut against the second stop block 1212 when the knob 130 is rotated in the first direction relative to the shell 120.
[0068] The first direction may be the rotation direction of the knob 130 when the main body of the motor is closed. Of course, the first direction may also be the rotation direction of the knob 130 when the main body of the motor is opened.
[0069] In actual use, assuming that excessive rotation of the knob 130 has a greater impact on the motor protection device when the motor protection body is closed than when the motor protection body is opened, the first direction can be the rotation direction of the knob 130 when the motor protection body is closed. assuming that excessive rotation of the knob 130 has a greater impact on the motor protection device when the motor protection body is opened than when the motor protection body is closed, the first direction can be the rotation direction of the knob 130 when the motor protection body is opened.
[0070] Figure 5 This is a schematic diagram of the combined structure of a knob handle provided in an embodiment of the present application from another perspective. Figure 6 yes Figure 5 Sectional view along section AA. Figure 6 Taking the viewing angle shown as an example, the first direction may be a clockwise direction. Figure 6 It shows a state where the main limiting structure 132 abuts against the first stopper 1211 and the auxiliary limiting structure 133 abuts against the second stopper 1212 after the knob 130 rotates relative to the housing 120 in the first direction.
[0071] In this embodiment of the present application, the mounting portion 131 of the knob 130 is provided with not only a primary limiting structure 132 but also a secondary limiting structure 133. A first stopper 1211 provided on the housing 120 is located on the rotation path of the primary limiting structure 132, and a second stopper 1212 is located on the rotation path of the secondary limiting structure 133. Thus, when the knob 130 rotates relative to the housing 120 in a first direction, the primary limiting structure 132 can abut against the first stopper 1211, thereby limiting the primary limiting structure 132 via the first stopper 1211. Furthermore, the secondary limiting structure 133 can abut against the second stopper 1212, thereby limiting the secondary limiting structure 133 via the second stopper 1212.
[0072] That is to say, the present application can not only limit the rotation of the knob 130 in the first direction by the cooperation between the main limiting structure 132 and the first stop block 1211, but also limit the rotation of the knob 130 in the first direction by the cooperation between the auxiliary limiting structure 133 and the second stop block 1212.
[0073] Based on this, when the operator forcibly rotates the knob 130 of the knob handle 100 in the first direction, even if the main limiting structure 132 tends to go over the first stop 1211, if the knob 130 is also provided with an auxiliary limiting structure 133, the auxiliary limiting structure 133 cooperates with the second stop 1212 to prevent the knob 130 from excessively rotating in the first direction relative to the housing 120 and causing the main limiting structure 132 to go over the first stop 1211. In this way, the possibility of the knob 130 going over the limiting feature on the housing 120 when rotating in the first direction can be reduced, ensuring that the limiting feature on the housing 120 can normally limit the rotation of the knob 130 in the first direction, thereby preventing the motor protection device including the knob handle 100 from failing.
[0074] Please continue to refer to Figure 6 In some embodiments, when the knob 130 is rotated relative to the housing 120 in the first direction by a certain angle, the distance between the main limiting structure 132 and the first stopper 1211 can be substantially equal to the distance between the auxiliary limiting structure 133 and the second stopper 1212. In this way, when the main limiting structure 132 abuts the first stopper 1211, the auxiliary limiting structure 133 abuts the second stopper 1212.
[0075] This arrangement allows the primary limiting structure 132 and the secondary limiting structure 133 on the knob 130 to simultaneously abut against corresponding limiting features on the housing 120. When an operator forcefully rotates the knob 130 of the knob handle 100 in the first direction, the primary limiting structure 132 and the secondary limiting structure 133 can work together to simultaneously exert a limiting effect, doubling the limiting effect of the housing 120 on the knob 130. This effectively reduces the possibility of the knob 130 exceeding the limiting features on the housing 120 when forcefully rotated in the first direction, and can effectively prevent the motor protection device including the knob handle 100 from failing.
[0076] and Figure 6 The embodiment is different in that, in other embodiments, after the knob 130 is rotated relative to the housing 120 in the first direction by a certain angle, the distance between the main limiting structure 132 and the first stopper 1211 may be smaller than the distance between the auxiliary limiting structure 133 and the second stopper 1212. In this way, while the main limiting structure 132 is in contact with the first stopper 1211, the auxiliary limiting structure 133 has not yet been in contact with the second stopper 1212.
[0077] In specific implementation, when the main limiting structure 132 abuts against the first stop block 1211, the distance between the auxiliary limiting structure 133 and the second stop block 1212 can be set to be smaller to ensure that the auxiliary limiting structure 133 can abut against the second stop block 1212 before the main limiting structure 132 passes over the first stop block 1211.
[0078] With this arrangement, when the operator rotates the knob 130 in the first direction, the primary limiting structure 132 will abut against the corresponding first stop 1211 on the housing 120 before the secondary limiting structure 133, thereby providing a preliminary limit to the rotation of the knob 130 relative to the housing 120 in the first direction. As the operator continues to forcefully rotate the knob 130 in the first direction, although the primary limiting structure 132 tends to pass over the corresponding first stop 1211, the secondary limiting structure 133 can now abut against the second stop 1212, allowing it to take over and increase the torque required to break the knob 130. Therefore, this arrangement can also reduce the possibility of the knob 130 passing over the limiting feature on the housing 120 when forcefully rotated in the first direction, effectively preventing failure of the motor protection device including the knob handle 100.
[0079] In this application, the knob 130 can not only rotate in the first direction relative to the housing 120, but also rotate in the second direction relative to the housing 120. In addition, the arrangement of the main limiting structure 132 and the auxiliary limiting structure 133 can not only reduce the possibility of the knob 130 rotating in the first direction and passing over the limiting features on the housing 120, but also reduce the possibility of the knob 130 rotating in the second direction and passing over the limiting features on the housing 120. The second direction is opposite to the first direction. Figure 6 Taking the viewing angle shown as an example, the second direction may be counterclockwise.
[0080] For example, when the main limiting structure 132 abuts against the second stopper 1212 during the process of the knob 130 rotating relative to the housing 120 in the second direction, the auxiliary limiting structure 133 can abut against the first stopper 1211 to limit the knob 130 from continuing to rotate in the second direction.
[0081] The primary limiting structure 132 includes a first wall and a second wall positioned opposite each other in the rotational direction of the knob 130. Assuming that the first wall of the primary limiting structure 132 abuts the first stop 1211 during the rotation of the knob 130 relative to the housing 120 in the first direction, the second wall of the primary limiting structure 132 will abut the second stop 1212 during the rotation of the knob 130 relative to the housing 120 in the second direction. In other words, the wall of the primary limiting structure 132 that abuts the first stop 1211 is different from the wall of the primary limiting structure 132 that abuts the second stop 1212, and these two walls are opposite each other in the rotational direction of the knob 130.
[0082] Similarly, the wall of the auxiliary limiting structure 133 that abuts the second stopper 1212 is also different from the wall of the auxiliary limiting structure 133 that abuts the first stopper 1211. The specific abutting relationships between the auxiliary limiting structure 133 and the first stopper 1211, and between the auxiliary limiting structure 133 and the second stopper 1212, will be described in detail later in conjunction with the number of auxiliary limiting structures 133 and will not be expanded here.
[0083] When the knob 130 is rotated relative to the housing 120 in the second direction, the main limiting structure 132 abuts against the second stopper 1212, and the second stopper 1212 can limit the main limiting structure 132. In addition, the auxiliary limiting structure 133 abuts against the first stopper 1211, and the first stopper 1211 can limit the auxiliary limiting structure 133.
[0084] That is to say, the present application can not only limit the rotation of the knob 130 in the second direction by the cooperation between the main limiting structure 132 and the second stop block 1212, but also limit the rotation of the knob 130 in the second direction by the cooperation between the auxiliary limiting structure 133 and the first stop block 1211.
[0085] Based on this, when the operator forcibly rotates the knob 130 of the knob handle 100 in the second direction, even if the main limiting structure 132 tends to go over the second stop 1212, if the knob 130 is also provided with an auxiliary limiting structure 133, the auxiliary limiting structure 133 cooperates with the first stop 1211 to prevent the knob 130 from excessively rotating in the second direction relative to the housing 120 and causing the main limiting structure 132 to go over the second stop 1212. In this way, the possibility of the knob 130 going over the limiting feature on the housing 120 when rotating in the second direction can be reduced, ensuring that the limiting feature on the housing 120 can properly limit the rotation of the knob 130 in the second direction, thereby preventing the motor protection device including the knob handle 100 from failing.
[0086] In summary, the knob handle 100 provided by the present application can not only prevent the knob 130 from excessively rotating in the first direction relative to the housing 120 and exceeding the limiting feature on the housing 120, but can also prevent the knob 130 from excessively rotating in the second direction relative to the housing 120 and exceeding the limiting feature on the housing 120. In other words, the knob handle 100 provided by the present application can not only prevent the knob 130 from excessively rotating and exceeding the limiting feature on the housing 120 when controlling the motor protection body to close the switch, but can also prevent the knob 130 from excessively rotating and exceeding the limiting feature on the housing 120 when controlling the motor protection body to open the switch, thereby effectively reducing the possibility of failure of the motor protection device including the knob handle 100.
[0087] During the process of rotating the knob 130 relative to the housing 120 in the second direction, in some embodiments, after the knob 130 rotates a certain angle relative to the housing 120 in the second direction, the distance between the main limiting structure 132 and the second stopper 1212 may be substantially equal to the distance between the auxiliary limiting structure 133 and the first stopper 1211. In this way, when the main limiting structure 132 abuts the second stopper 1212, the auxiliary limiting structure 133 abuts the first stopper 1211.
[0088] This arrangement allows the primary limiting structure 132 and the secondary limiting structure 133 on the knob 130 to simultaneously abut against corresponding limiting features on the housing 120. When the operator forcibly rotates the knob 130 of the knob handle 100 in the second direction, the primary limiting structure 132 and the secondary limiting structure 133 can work together to simultaneously exert a limiting effect, doubling the limiting effect of the housing 120 on the knob 130. This effectively reduces the possibility of the knob 130 exceeding the limiting features on the housing 120 when forcibly rotated in the second direction, and can effectively prevent the motor protection device including the knob handle 100 from failing.
[0089] In other embodiments, after the knob 130 is rotated relative to the housing 120 by a certain angle in the second direction, the distance between the main limiting structure 132 and the second stopper 1212 may be smaller than the distance between the auxiliary limiting structure 133 and the first stopper 1211. In this way, while the main limiting structure 132 abuts the second stopper 1212, the auxiliary limiting structure 133 has not yet abutted the first stopper 1211.
[0090] With this arrangement, when the operator rotates the knob 130 in the second direction, the primary limiting structure 132 will abut the corresponding second stop 1212 on the housing 120 before the secondary limiting structure 133, thereby providing a preliminary limit to the rotation of the knob 130 relative to the housing 120 in the second direction. As the operator continues to forcefully rotate the knob 130 in the second direction, although the primary limiting structure 132 tends to pass over the corresponding second stop 1212, the secondary limiting structure 133 can now abut against the first stop 1211, allowing it to take over and increase the torque required to break the knob 130. Therefore, this arrangement also reduces the possibility of the knob 130 passing over the limiting feature on the housing 120 when forcefully rotated in the second direction, effectively preventing failure of the motor protection device including the knob handle 100.
[0091] Please refer to the attached Figure 6 , and combined with the number of the auxiliary limiting structures 133, the specific abutting relationship between the auxiliary limiting structure 133 and the first stop block 1211, and the specific abutting relationship between the auxiliary limiting structure 133 and the second stop block 1212 are described in detail.
[0092] In some embodiments, there can be one auxiliary limiting structure 133, which includes a first limiting wall and a second limiting wall. The first limiting wall is disposed near the first stopper 1211, and the second limiting wall is disposed near the second stopper 1212. When the knob 130 is rotated in the first direction, the second limiting wall can abut against the second stopper 1212. When the knob 130 is rotated in the second direction, the first limiting wall can abut against the first stopper 1211.
[0093] In this way, when the knob 130 rotates in the first direction relative to the shell 120, the wall of the auxiliary limiting structure 133 close to the second stop block 1212 can abut against the second stop block 1212 to assist the cooperation between the main limiting structure 132 and the first stop block 1211 to limit the knob 130 from rotating excessively in the first direction relative to the shell 120, so that the knob 130 passes the limiting feature on the shell 120.
[0094] During the process of the knob 130 rotating in the second direction relative to the shell 120, the wall of the auxiliary limiting structure 133 close to the first stop block 1211 can abut against the first stop block 1211 to assist the cooperation between the main limiting structure 132 and the second stop block 1212 to limit the knob 130 from rotating excessively in the second direction relative to the shell 120, so that the knob 130 passes the limiting feature on the shell 120.
[0095] In other embodiments, Figure 6 As shown, the number of auxiliary limiting structures 133 can be two. Assuming that the two auxiliary limiting structures 133 are called the first sub-limiting structure 1331 and the second sub-limiting structure 1332, the first sub-limiting structure 1331 is set close to the first stop block 1211, and the second sub-limiting structure 1332 is set close to the second stop block 1212.
[0096] It should be noted that when there are two auxiliary limiting structures 133, the first sub-limiting structure 1331 and the second sub-limiting structure 1332 are located on the same side of the first stop block 1211 and the second stop block 1212, and the main limiting structure 132 and the two auxiliary limiting structures 133 are located on different sides of the first stop block 1211 and the second stop block 1212.
[0097] The first sub-limiting structure 1331 and the second sub-limiting structure 1332 may have the same structure or different structures, which is not limited in this embodiment of the present application.
[0098] When there are two auxiliary limiting structures 133, during the process of the knob 130 rotating in the first direction, the side of the second sub-limiting structure 1332 close to the second stop block 1212 can abut against the second stop block 1212 to assist the main limiting structure 132 in cooperating with the first stop block 1211 to limit the knob 130 from rotating excessively in the first direction relative to the shell 120, so that the knob 130 passes the limiting feature on the shell 120.
[0099] During the process of rotating the knob 130 in the second direction, the side of the first sub-limiting structure 1331 close to the first stop block 1211 can abut against the first stop block 1211 to assist the cooperation between the main limiting structure 132 and the second stop block 1212 to limit the rotation of the knob 130 in the second direction relative to the shell 120, so that the knob 130 passes the limiting feature on the shell 120.
[0100] In summary, the knob handle 100 provided in the present application, regardless of whether the number of auxiliary limiting structures 133 is one or two, can prevent the knob 130 from exceeding the limiting feature on the shell 120 when it is rotated excessively in the first direction relative to the shell 120, and can also prevent the knob 130 from exceeding the limiting feature on the shell 120 when it is rotated excessively in the second direction relative to the shell 120.
[0101] Based on the aforementioned description of the mounting portion 131 being provided with the main limiting structure 132, in some embodiments of the present application, the main limiting structure 132 can be integrally formed with the mounting portion 131. This configuration can save on assembly steps for the main limiting structure 132 and the mounting portion 131, while also ensuring the strength of the connection between the main limiting structure 132 and the mounting portion 131, thereby reducing the possibility of the main limiting structure 132 falling off the mounting portion 131.
[0102] It is understandable that the main limiting structure 132 can also be detachably connected to the mounting portion 131 .
[0103] For example, the main limiting structure 132 can be detachably connected to the mounting portion 131 by means of snap connection, plug connection, screw connection, etc.
[0104] The main limiting structure 132 is detachably connected to the mounting portion 131. If the main limiting structure 132 becomes damaged after a period of use and abuts against the limiting features on the housing 120, the main limiting structure 132 can be easily removed from the mounting portion 131 for replacement, reducing the possibility of the entire knob 130 being scrapped. In addition, the main limiting structure 132 of an appropriate size can be easily connected to the mounting portion 131 according to the different rotation angles of the knob 130, thereby increasing the applicability of the knob 130.
[0105] Based on the aforementioned description that the mounting portion 131 is provided with the auxiliary limiting structure 133, in some embodiments of the present application, the auxiliary limiting structure 133 may be integrally formed with the mounting portion 131. Alternatively, the auxiliary limiting structure 133 may also be detachably connected to the mounting portion 131.
[0106] The auxiliary limiting structure 133 and the mounting portion 131 are integrally formed, which can save the assembly process of the auxiliary limiting structure 133 and the mounting portion 131, and can ensure the strength of the connection between the auxiliary limiting structure 133 and the mounting portion 131, reducing the possibility of the auxiliary limiting structure 133 falling off the mounting portion 131.
[0107] The auxiliary limiting structure 133 is detachably connected to the mounting portion 131. If the auxiliary limiting structure 133 becomes damaged after a period of use and abuts against the limiting features on the housing 120, the auxiliary limiting structure 133 can be easily removed from the mounting portion 131 for replacement, reducing the possibility of the entire knob 130 being scrapped. In addition, the auxiliary limiting structure 133 of the appropriate size can be easily connected to the mounting portion 131 according to the specified different rotation angles of the knob 130, thereby increasing the applicability of the knob 130.
[0108] Taking the example of the main limiting structure 132 abutting against the first stopper 1211 and the auxiliary limiting structure 133 abutting against the second stopper 1212, in some embodiments of the present application, when the main limiting structure 132 abuts against the first stopper 1211, the overlap amount between the main limiting structure 132 and the first stopper 1211 may be greater than or equal to a first preset value. And / or, when the auxiliary limiting structure 133 abuts against the second stopper 1212, the overlap amount between the auxiliary limiting structure 133 and the second stopper 1212 may be greater than or equal to a second preset value.
[0109] The overlap amount between the main limiting structure 132 and the first stopper 1211 reflects, to a certain extent, the area of the contact surface between the main limiting structure 132 and the first stopper 1211 .
[0110] The greater the overlap between the main limiting structure 132 and the first stopper 1211, the more reliable the first stopper 1211 is in limiting the main limiting structure 132 when the main limiting structure 132 and the first stopper 1211 abut against each other. For example, the lower limit of the overlap between the main limiting structure 132 and the first stopper 1211, that is, the first preset value, can be greater than or equal to 2 mm to ensure that there is sufficient contact area between the main limiting structure 132 and the first stopper 1211 when they abut against each other. The upper limit of the overlap between the main limiting structure 132 and the first stopper 1211 can be comprehensively determined in combination with the internal space size of the housing 120 and other factors to ensure that while the first stopper 1211 reliably limits the main limiting structure 132, it does not affect the arrangement of other structural components in the housing 120 or the realization of other performances.
[0111] Similarly, the overlap between the auxiliary limiting structure 133 and the second stopper 1212 reflects, to a certain extent, the area of the contact surface between the auxiliary limiting structure 133 and the second stopper 1212 .
[0112] The greater the overlap between the auxiliary limiting structure 133 and the second stopper 1212, the more reliably the second stopper 1212 limits the auxiliary limiting structure 133 when the auxiliary limiting structure 133 abuts the second stopper 1212. For example, the lower limit of the overlap between the auxiliary limiting structure 133 and the second stopper 1212, i.e., the second preset value, can be greater than or equal to 2 mm to ensure that there is sufficient contact area between the auxiliary limiting structure 133 and the second stopper 1212 when they abut. The upper limit of the overlap between the auxiliary limiting structure 133 and the second stopper 1212 can be determined comprehensively based on the internal space size of the housing 120 and other factors to ensure that the second stopper 1212 reliably limits the auxiliary limiting structure 133 without affecting the arrangement of other structural components within the housing 120 or the realization of other performance characteristics.
[0113] Among them, the first preset value and the second preset value can be the same in size, or can be set to be different according to actual needs, which is not limited in the embodiment of the present application.
[0114] Taking the example of the main limiting structure 132 abutting against the second stopper 1212 and the auxiliary limiting structure 133 abutting against the first stopper 1211, in some embodiments of the present application, when the main limiting structure 132 abuts against the second stopper 1212, the overlap amount between the main limiting structure 132 and the second stopper 1212 may be greater than or equal to a third preset value. And / or, when the auxiliary limiting structure 133 abuts against the first stopper 1211, the overlap amount between the auxiliary limiting structure 133 and the first stopper 1211 may be greater than or equal to a fourth preset value.
[0115] The basis and effect of setting the third and fourth preset values are similar to the basis and effect of setting the first and second preset values. The basis and effect of setting the third and fourth preset values will not be described in detail here.
[0116] Similar to the first preset value and the second preset value, the third preset value and the fourth preset value can both be greater than or equal to 2 mm to ensure that the main limiting structure 132 has sufficient contact area when abutting against the second stop block 1212, and to ensure that the auxiliary limiting structure 133 has sufficient contact area when abutting against the first stop block 1211, thereby ensuring that the limiting features on the shell 120 can reliably limit the main limiting structure 132 and the auxiliary limiting structure 133.
Claims
1. A knob handle connected to the Mabao body through a connecting rod, characterized in that: include: The housing is provided with a mounting groove, and a groove wall of the mounting groove is provided with a first stopper and a second stopper; A knob comprising a mounting portion, wherein the mounting portion is located in the mounting slot, and the knob is rotatable relative to the housing; Wherein, the mounting portion is provided with a main limiting structure and an auxiliary limiting structure, the first stopper is located on the rotation path of the main limiting structure, and the second stopper is located on the rotation path of the auxiliary limiting structure; When the knob rotates relative to the housing in the first direction, the main limiting structure abuts against the first stopper, and the auxiliary limiting structure can abut against the second stopper to limit the knob from continuing to rotate in the first direction.
2. The knob handle according to claim 1, characterized in that: The main limiting structure abuts against the first stopper while the auxiliary limiting structure abuts against the second stopper.
3. The knob handle according to claim 1, characterized in that: When the knob rotates relative to the housing in the second direction, the auxiliary limiting structure can abut against the first stopper when the main limiting structure abuts against the second stopper, thereby limiting the knob from continuing to rotate in the second direction; The second direction is opposite to the first direction.
4. The knob handle according to claim 3, characterized in that: The main limiting structure abuts against the second stopper while the auxiliary limiting structure abuts against the first stopper.
5. The knob handle according to claim 3 or 4, characterized in that: There is one auxiliary limiting structure, and the auxiliary limiting structure includes a first limiting wall and a second limiting wall, wherein the first limiting wall is arranged close to the first stopper, and the second limiting wall is arranged close to the second stopper; When the knob is rotated in the first direction, the second limiting wall can abut against the second stopper; When the knob is rotated toward the second direction, the first limiting wall can abut against the first stopper.
6. The knob handle according to claim 3 or 4, characterized in that: The auxiliary limiting structure includes a first sub-limiting structure and a second sub-limiting structure, the first sub-limiting structure is arranged close to the first stopper, and the second sub-limiting structure is arranged close to the second stopper; When the knob is rotated in the first direction, a side of the second sub-limiting structure close to the second stopper can abut against the second stopper; When the knob is rotated toward the second direction, a side of the first sub-limiting structure close to the first stopper can abut against the first stopper.
7. The knob handle according to claim 1, characterized in that: The main limiting structure and the mounting portion are integrally formed, or the main limiting structure and the mounting portion are detachably connected.
8. The knob handle according to claim 1, characterized in that: The auxiliary limiting structure and the mounting portion are integrally formed, or the auxiliary limiting structure and the mounting portion are detachably connected.
9. The knob handle according to claim 1, characterized in that: When the main limiting structure abuts against the first stopper, the overlap amount between the main limiting structure and the first stopper is greater than or equal to a first preset value; and / or, When the auxiliary limiting structure abuts against the second stopper, an overlap amount between the auxiliary limiting structure and the second stopper is greater than or equal to a second preset value.
10. A motor protection device, characterized in that: The invention comprises a Ma Bao body, a connecting rod and a knob handle according to any one of claims 1 to 9, wherein the Ma Bao body and the knob handle are connected by the connecting rod.