Guiding mechanism for switching direction of spring force of handle of dual-power change-over switch

Abstract

The utility model relates to a guide mechanism for switching spring force directions of a handle of a dual-power change-over switch. The guide mechanism comprises a main support, the handle and a guide assembly. Symmetrically distributed mounting spaces are formed on the two sides of the handle in the main bracket; the two sets of guide assemblies are arranged in the mounting spaces on the two sides respectively, each guide assembly comprises a guide piece, a spring arranged on the guide piece in a sleeving mode and a U-shaped stress support installed at the two ends of the guide piece, each stress support comprises a bottom plate and lug parts formed on the two sides of the bottom plate, and the handle is erected in the middle of the main support; the handle can rotate relative to the main support under the action of external force so that the guide assemblies on the two sides can rotate in the installation space, the two ends of the spring are positively pressed on the bottom plates of the stress supports on the two sides correspondingly to act on the main support and the handle, and therefore the handle is kept in the switched state. In the stress process of the spring in the mechanism, the end faces on the two sides are in complete contact with the stress support, the force value distribution of the spring can be more uniform, and the service life of the spring is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of power switch technology, and in particular to a guide mechanism for switching the direction of spring force on a dual power supply switch handle. Background Technology

[0002] In many dual-power transfer switches, the state of the handle after switching is maintained using spring force. The reliability of the handle's operating mechanism directly affects the accuracy and stability of power switching. In existing dual-power transfer switch products, the guide mechanism for the handle's spring direction switching typically consists of two U-shaped iron plates fitted inside the spring, with one side applying force to the handle and the other to the outer casing.

[0003] The stress-bearing surface of the spring in the above structure is localized. During use, the spring end face only partially contacts the bracket, leading to stress concentration and shortening the spring's lifespan. Furthermore, the U-shaped iron sheet is difficult to assemble with the outer shell, resulting in low assembly efficiency and poor stability. During maintenance, it needs to be removed from the outer shell, leading to high maintenance costs and time consumption. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a guide mechanism for switching the direction of spring force in a dual-power switching switch handle. In this mechanism, the spring's two end faces are in complete contact with the force-bearing bracket during the force application process, which enables a more uniform distribution of the spring force and extends the spring's service life. Furthermore, by utilizing the main bracket as a carrier for the entire force application, installation becomes more convenient and secure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A guide mechanism for switching the direction of spring force on a dual-power switch handle is characterized by comprising a main support, a handle, and guide components; the main support is mounted on a base, the cross-section of the main support is U-shaped, and symmetrically distributed installation spaces are formed on both sides of the handle within the main support; the guide components are provided in two sets and are respectively arranged in the installation spaces on both sides, the guide components include guide plates, springs sleeved on the guide plates, and U-shaped force-bearing brackets installed at both ends of the guide plates, the force-bearing brackets include a base plate and ears formed on both sides of the base plate, the handle is mounted in the middle of the main support, and the force-bearing brackets on both sides are respectively hinged to the handle and the main support;

[0007] The spring is pre-tensioned between the two force-bearing supports. Under the action of external force, the handle can rotate relative to the main support, causing the guide components on both sides to rotate within the installation space. The two ends of the spring press positively on the base plates of the two force-bearing supports, acting on the main support and the handle, thereby keeping the handle in the switched state.

[0008] Preferably, the main support includes an assembly plate and mounting plates symmetrically formed on both sides of the base plate, with mounting holes corresponding to the sides of the two mounting plates; the two sides of the handle extend outwards to form mounting walls, with corresponding slots constructed on the mounting walls; the force-bearing support includes a first force-bearing support and a second force-bearing support, with a first rotating shaft passing through the ear and mounting hole of the first force-bearing support and connecting to the mounting plates on both sides, and a second rotating shaft passing through the ear of the second force-bearing support and engaging the slot to be installed on the handle, with the base plates of the two force-bearing supports arranged opposite each other to compress the spring.

[0009] Preferably, the base plate has a connecting hole, and the two ends of the guide plate are respectively equipped with a stop bar and a bayonet. After the guide plate passes through the connecting holes on both sides, the stop bar abuts against the base plate of the first force-bearing bracket, and the bayonet locks the second rotating shaft.

[0010] Preferably, annular grooves are formed on both sides of the first rotating shaft on the outer side of the mounting plate, and retaining rings are fitted onto the annular grooves.

[0011] Preferably, a baffle is constructed on the outer edge of the outer slot, and the outer edge of the inner slot is close to an encapsulation end face of the dual power supply switching switch housing.

[0012] Preferably, the mounting plate has an arc-shaped notch in the middle, the bottom of the handle is fitted onto the arc-shaped notch, and the bottom sides of the handle are provided with arc-shaped limiting plates that fit the outer side of the mounting plate.

[0013] Preferably, the upper edges of both sides of the notch are provided with limiting walls, and the upper edge of the mounting wall is provided with a limiting block that cooperates with the limiting wall.

[0014] Preferably, the sidewall of the handle is provided with clearance grooves corresponding to the ears of the force-bearing bracket and the guide plate.

[0015] Preferably, the lower side wall of the handle is provided with a mounting groove for connection with the rotating shaft.

[0016] Preferably, the base plate is provided with multiple bolt holes, and bolts are screwed into the bolt holes to install the main bracket onto the connecting groove of the base.

[0017] The present invention adopts the above technical solution and has the following beneficial effects:

[0018] ① During the handle switching process, the two ends of the spring in the guide assembly are in complete contact with the force support. The spring acts on the force support to the rotating shaft, and then on the main support and the handle on both sides respectively, keeping the handle in the switching state. The force distribution of the spring is more uniform, avoiding local wear and extending the service life of the spring.

[0019] ② The force-bearing bracket and guide plate are installed onto the main bracket by rotating the shaft, and then the main bracket is fixed onto the base, which simplifies the assembly process, makes disassembly and assembly convenient, and facilitates maintenance;

[0020] ③ The main bracket and handle are fitted with an arc-shaped notch and a limiting plate, as well as a limiting block and a limiting wall, which makes the handle rotation structure more stable. Attached Figure Description

[0021] Figure 1 A three-dimensional structural diagram of the guide mechanism for switching the direction of the handle spring force.

[0022] Figure 2 A three-dimensional structural diagram of the guide mechanism for switching the direction of the handle spring force from another perspective.

[0023] Figure 3 This is a schematic diagram of the installation of the guide assembly in the main support.

[0024] Figure 4 A schematic diagram of the three-dimensional structure of the main support.

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the handle.

[0026] Figure 6 This is a three-dimensional structural diagram of the handle from another perspective.

[0027] Figure 7 This is a three-dimensional structural diagram of the load-bearing support.

[0028] Figure 8 This is a schematic diagram of the three-dimensional structure of the guide plate.

[0029] Figure 9 This is a three-dimensional structural diagram of the rotation axis.

[0030] Figure 10 This is a schematic diagram showing the arrangement of the connecting slots on the base.

[0031] Figure 11 A schematic diagram of the installation of the guide mechanism for switching the direction of the handle spring force on the base. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] like Figures 1-11The diagram shows a guide mechanism for switching the direction of spring force on a dual-power switching switch handle, comprising a main support 1, a handle 2, and guide components. The main support 1 is mounted on a base 3, and the cross-section of the main support 1 is U-shaped. Symmetrically distributed installation spaces are formed on both sides of the handle 2 within the main support 1. The guide components are provided in two sets and are respectively arranged in the installation spaces on both sides. The guide components include guide plates 4, springs 5 ​​sleeved on the guide plates 4, and U-shaped force-bearing brackets installed at both ends of the guide plates 4. The force-bearing brackets include a base plate 6 and ears 7 formed on both sides of the base plate 6. The handle 2 is mounted in the middle of the main support 1, and the force-bearing brackets on both sides are respectively hinged to the handle 2 and the main support 1.

[0038] The spring 5 is pre-tightened between the two force-bearing supports. Under the action of external force, the handle 2 can rotate relative to the main support 1, so that the two guide components on both sides can rotate in the installation space. The two ends of the spring 5 press positively on the base plate 6 of the two force-bearing supports, respectively, acting on the main support 1 and the handle 2, so that the handle 2 is kept in the switched state.

[0039] In the above technical solution, during the handle switching process, the two ends of the spring in the guide assembly are in complete contact with the base plate of the force support. The spring acts on the force support to the rotating shaft, and then on the main support and the handle on both sides respectively, keeping the handle in the switching state. The force distribution of the spring is more uniform, avoiding local wear and improving the service life of the spring. In addition, the two ends of the guide assembly are installed on the main support and the handle respectively, and the main support is then assembled onto the base, making disassembly and assembly very convenient.

[0040] Furthermore, the main support 1 includes an assembly plate 8 and mounting plates 9 symmetrically formed on both sides of the base plate 6, with mounting holes 10 correspondingly opened on both sides of the two mounting plates 9; the handle 2 extends outward from both sides to form mounting walls 11, with corresponding slots 12 constructed on the mounting walls 11; the force-bearing support includes a first force-bearing support 13 and a second force-bearing support 14, a first rotating shaft 15 passes through the ear 7 of the first force-bearing support 13 and the mounting hole 10 and connects to the mounting plates 9 on both sides, and a second rotating shaft 16 passes through the ear 7 of the second force-bearing support 14 and is inserted into the slot 12 to be installed on the handle 2, with the base plates 6 of the two force-bearing supports arranged opposite to each other to compress the spring 5. In this technical solution, the two force-bearing supports on both sides are rotatably connected to the main support and the handle respectively through rotating shafts, forming a stable hinge structure, ensuring that the spring preload is evenly transmitted, and the guide component can be placed into the main support and passed through the rotating shaft to complete the assembly, making assembly and disassembly very convenient.

[0041] Furthermore, the base plate 6 has connecting holes 17, and the guide plate 4 has baffles 18 and bayonets 19 at both ends. After the guide plate 4 passes through the connecting holes 17 on both sides, the baffles 18 abut against the base plate 6 of the first force-bearing bracket 13, and the bayonets 19 hold the second rotating shaft 16 in place. In this technical solution, the guide plate cooperates with the force-bearing bracket and the second rotating shaft through the baffles and bayonets to limit the axial displacement of the guide plate, prevent the spring from shifting laterally during compression / rebound, improve the stability between the guide plate, the force-bearing bracket, and the rotating shaft, and improve the guiding accuracy. At the same time, this structure simplifies the installation process of the guide plate and the rotating shaft and reduces assembly steps.

[0042] Furthermore, annular grooves 20 are formed on both sides of the first rotating shaft 15 on the outer side of the mounting plate 9, and retaining rings 21 are fitted onto the annular grooves 20. In this technical solution, the annular grooves on both sides of the first rotating shaft cooperate with the retaining rings to limit movement, prevent the rotating shaft from loosening and coming off due to vibration or load during long-term use, and enhance connection stability.

[0043] Furthermore, a baffle 22 is constructed on the outer edge of the outer slot 12, and the outer edge of the inner slot 12 is close to an encapsulation end face of the dual power supply switching switch housing. In this technical solution, the baffle design of the outer slot restricts the axial displacement of the second rotating shaft, and the inner slot cooperates with the encapsulation end face of the switch housing to form a double limit, preventing the handle from rotating beyond its travel range and improving operational safety.

[0044] Furthermore, an arc-shaped recess 23 is formed in the middle of the mounting plate 9, and the bottom of the handle 2 is fitted onto the arc-shaped recess 23. Arc-shaped limiting plates 24, which fit against the outer side of the mounting plate 9, are constructed on both sides of the bottom of the handle 2. In this technical solution, the arc-shaped recess of the main bracket cooperates with the arc-shaped limiting plates at the bottom of the handle to limit left and right movement while making the rotation trajectory of the handle smoother and reducing frictional resistance.

[0045] Furthermore, limiting walls 25 are provided on both sides of the upper edge of the notch 23, and limiting blocks 26 that cooperate with the limiting walls 25 are provided on the upper edge of the mounting wall 11. In this technical solution, the limiting walls on both sides of the notch cooperate with the limiting blocks of the mounting wall to play a limiting role, accurately control the rotation angle of the handle, prevent spring overload or mechanism damage due to excessive rotation, and improve operational reliability.

[0046] Furthermore, the side wall of the handle 2 is provided with a clearance groove 27 corresponding to the force-bearing bracket ear 7 and the guide plate 4. In this technical solution, the clearance groove on the side wall of the handle provides room for movement of the force-bearing bracket ear and the guide plate, avoids interference between the components, ensures smooth rotation of the handle, and optimizes the overall structural compactness.

[0047] Furthermore, the lower side wall of the handle 2 is provided with a mounting groove 28 for connection with the rotating shaft. In this technical solution, the mounting groove is used for connection with the rotating shaft, which facilitates installation.

[0048] Furthermore, the base plate 6 is provided with multiple bolt holes 29, and bolts are screwed into the bolt holes 29 to install the main bracket 1 onto the connecting groove 30 of the base 3. In this technical solution, the bolt fixing method makes it easy to disassemble and assemble the main bracket and the base, and makes assembly and maintenance more convenient.

[0049] In this specific embodiment, addressing the issues of short spring life and cumbersome installation of the guide mechanism in the handle state holding mechanism of existing dual-power transfer switches, the above solution hinges both ends of the guide assembly to the main bracket and the handle respectively, and then assembles the main bracket onto the base, making assembly and disassembly very convenient. During handle switching, the spring in the guide assembly is in complete contact with the base plate of the force-bearing bracket at both ends. The spring acts on the force-bearing bracket to the rotation shaft, and then on both sides to the main bracket and the handle respectively, keeping the handle in the switching state. The force distribution of the spring is more uniform, avoiding localized wear and extending the service life of the spring.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A guide mechanism for switching the direction of spring force on a dual-power switching switch handle, characterized in that: It includes a main support (1), a handle (2) and a guide assembly; the main support (1) is mounted on a base (3), the cross section of the main support (1) is U-shaped, and there are symmetrically distributed installation spaces on both sides of the handle (2) inside the main support (1); the guide assembly is provided in two sets and is respectively set in the installation spaces on both sides. The guide assembly includes a guide plate (4), a spring (5) sleeved on the guide plate (4) and a U-shaped force support installed at both ends of the guide plate (4). The force support includes a base plate (6) and ears (7) formed on both sides of the base plate (6). The handle (2) is mounted in the middle of the main support (1), and the force supports on both sides are respectively hinged to the handle (2) and the main support (1); The spring (5) is pre-tightened between the two force-bearing supports. The handle (2) can rotate relative to the main support (1) under the action of external force, so that the two guide components rotate in the installation space. The two ends of the spring (5) press positively on the bottom plate (6) of the two force-bearing supports respectively, acting on the main support (1) and the handle (2), so that the handle (2) is kept in the switched state.

2. The guide mechanism for switching the direction of spring force on a dual power supply switch handle according to claim 1, characterized in that: The main support (1) includes an assembly plate (8) and mounting plates (9) symmetrically formed on both sides of the base plate (6). Mounting holes (10) are provided on both sides of the two mounting plates (9). The handle (2) extends outward from both sides to form mounting walls (11). Slots (12) are constructed on the corresponding mounting walls (11). The force support includes a first force support (13) and a second force support (14). A first rotating shaft (15) passes through the ear (7) and mounting hole (10) of the first force support (13) and connects to the mounting plates (9) on both sides. A second rotating shaft (16) passes through the ear (7) of the second force support (14) and is inserted into the slot (12) and installed on the handle (2). The base plates (6) of the two force supports are arranged opposite to each other to press the spring (5).

3. The guide mechanism for switching the direction of spring force on a dual power supply switch handle according to claim 2, characterized in that: The base plate (6) is provided with a connecting hole (17). The guide plate (4) has a baffle (18) and a bayonet (19) at both ends. After the guide plate (4) passes through the connecting holes (17) on both sides, the baffle (18) abuts against the base plate (6) of the first force support (13), and the bayonet (19) holds the second rotating shaft (16).

4. The guide mechanism for switching the direction of spring force on a dual power supply switch handle according to claim 2, characterized in that: The first rotating shaft (15) has annular grooves (20) formed on both sides of the mounting plate (9) on the outside, and retaining rings (21) are fitted on the annular grooves (20).

5. The guide mechanism for switching the direction of spring force on a dual power supply switch handle according to claim 4, characterized in that: A baffle (22) is constructed on the outer edge of the outer slot (12), and the outer edge of the inner slot (12) is close to an encapsulated end face of the dual power supply switching switch housing.

6. The guide mechanism for switching the direction of spring force on a dual power supply switch handle according to claim 2, characterized in that: An arc-shaped notch (23) is formed in the middle of the mounting plate (9), and the bottom of the handle (2) is adapted to be mounted on the arc-shaped notch (23). Arc-shaped limiting plates (24) that fit the outer side of the mounting plate (9) are constructed on both sides of the bottom of the handle (2).

7. The guide mechanism for switching the direction of spring force on a dual power supply switch handle according to claim 6, characterized in that: The upper edges of both sides of the notch (23) are provided with limiting walls (25), and the upper edge of the mounting wall (11) is provided with limiting blocks (26) that cooperate with the limiting walls (25).

8. The guide mechanism for switching the direction of spring force on a dual power supply switch handle according to claim 6, characterized in that: The side wall of the handle (2) is provided with a relief groove (27) corresponding to the force support ear (7) and the guide plate (4).

9. The guide mechanism for switching the direction of spring force on a dual power supply switch handle according to claim 8, characterized in that: The lower side wall of the handle (2) is provided with a mounting groove (28) for connecting to the rotating shaft.

10. The guide mechanism for switching the direction of spring force on a dual power supply switch handle according to claim 2, characterized in that: The base plate (6) is provided with multiple bolt holes (29). Bolts are screwed into the bolt holes (29) to install the main bracket (1) onto the connecting groove (30) of the base (3).

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