universal transfer switch

Abstract

The utility model belongs to low voltage electrical apparatus technical field discloses omnipotent change-over switch. The omnipotent change-over switch includes switch body, switch body includes wiring module, main shaft, the end cap with first center hole and angle limit unit, one end of main shaft is inserted in wiring module, and the rotation main shaft can switch the gear position of wiring module, and the main shaft is worn in first center hole, and the side of end cap towards wiring module is provided with at least one jack, and the jack is set up around first center hole, and angle limit unit includes follow-up swing piece and limiting piece, and follow-up swing piece is set up on main shaft, and limiting piece is inserted in corresponding jack, and follow-up swing piece is rotationally stopped in limiting piece. The utility model can limit the rotation angle range of main shaft of omnipotent change-over switch, and after handle is installed to main shaft, avoids the interference of handle and external structure.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to a universal changeover switch. Background Technology

[0002] The universal changeover switch, as a powerful and widely used master control device, plays a crucial role in the field of electrical control. It features multiple positions and stages, enabling precise and efficient control of multi-circuit circuits. Due to its unique performance advantages, it is widely used in various complex and critical electrical control scenarios. Structurally, the universal changeover switch mainly consists of two key parts: the switch body and the mounting plate. In actual installation, the switch body and mounting plate are separate before being assembled into the cabinet door. During installation, the switch body is placed inside the cabinet door, and the mounting plate is placed outside. Screws are used to securely connect the mounting plate, cabinet door, and switch body together through the connection holes in the mounting plate and the mounting holes on the end caps of the cabinet door and switch body.

[0003] The main structure of the switch body consists of several important components, including a wiring module and a spindle. The wiring module is the key part for electrical connections, containing multiple terminals for connecting to external wiring. The spindle, located inside the wiring module, is the core operating component. After the handle is attached to the spindle, rotating it actuates the contact system inside the wiring module, thus switching between different positions. Each position corresponds to a different electrical connection method, allowing the operator to select the appropriate position by rotating the spindle to meet various control requirements.

[0004] However, in practical applications, universal changeover switches also face challenges due to limited installation space. In some confined spaces, the lack of an angle limiting unit on the switch's spindle poses a potential problem. When the operator rotates the handle 360 ​​degrees, the handle may interfere with external structures during rotation. Utility Model Content

[0005] The purpose of this utility model is to provide a universal changeover switch that can limit the rotation angle range of the spindle of the universal changeover switch and prevent the handle from interfering with the external structure after the handle is installed on the spindle.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A universal changeover switch includes a switch body, which comprises a wiring module and a main shaft. One end of the main shaft is inserted into the wiring module, and rotating the main shaft can switch the positions of the wiring module. The switch body further comprises:

[0008] An end cap having a first central hole is disposed at one end of the wiring module, the main shaft passes through the first central hole, and at least one insertion hole is provided on the side of the end cap facing the wiring module, the insertion hole being arranged around the first central hole;

[0009] Angle limiting unit includes a follower swing member and a limiting member. The follower swing member is disposed on the main shaft, and the limiting member is inserted into the insertion hole. The follower swing member is stopped from rotating by the limiting member.

[0010] As an optional solution for the universal changeover switch, the follower rocker includes an annular portion and a limiting protrusion. The limiting protrusion is connected to the outer ring wall of the annular portion and extends radially along the annular portion. The annular portion is sleeved on the main shaft, and the limiting protrusion is stopped from rotating by the limiting member.

[0011] As an optional solution for the universal changeover switch, the socket is provided in at least two sets, and the center distance between the socket in each set and the first central hole is the same, while the center distance between the socket in different sets and the first central hole is different.

[0012] As an optional solution for the universal changeover switch, the end cover is provided with a first mounting hole, and the universal changeover switch further includes:

[0013] The adapter unit includes an adapter plate, on which a second center hole and a second mounting hole are provided. The center distance between the adapter holes in the same group and the second center hole is the same, while the center distance between the adapter holes in different groups and the second center hole is different.

[0014] The first fastener passes through the second mounting hole and connects to the first mounting hole, and the main shaft passes through the first center hole and the second center hole in sequence and extends out.

[0015] As an optional solution for the universal changeover switch, the universal changeover switch also includes a mounting plate with a connecting hole and an adapter plate with an adapter hole. The adapter plate has a first limiting groove on the side facing the end cover. The first limiting groove communicates with the corresponding adapter hole. A first nut is embedded in the first limiting groove. A second fastener can pass through the connecting hole and the adapter hole and then be threadedly connected to the first nut.

[0016] As an optional solution for the universal changeover switch, at least two latching members are provided at the opening of the first limiting groove. The at least two latching members are equally spaced along the circumference of the opening of the first limiting groove. One end of each latching member is elastically connected to the groove wall of the first limiting groove. The inner diameter of the space enclosed between the other ends of the at least two latching members is smaller than the outer contour dimension of the first nut.

[0017] As an optional solution for the universal changeover switch, the adapter plate is provided with multiple sets of adapter holes, and the center distance between the adapter holes in different sets and the second central hole is different; and / or

[0018] The end cap is provided with a plurality of third mounting holes spaced circumferentially around the first central hole, and the center distance between the third mounting holes and the first central hole is greater than the center distance between the first mounting holes and the first central hole.

[0019] As an optional solution for the universal changeover switch, the adapter plate is provided with an annular limiting rib on the side facing the end cover. The shape of the cavity formed by the annular limiting rib is adapted to the shape of the end cover, and the end cover is inserted into the cavity formed by the annular limiting rib.

[0020] As an optional solution for the universal changeover switch, the end cover is provided with a second limiting groove on the side away from the adapter plate. The second limiting groove is connected to the corresponding first mounting hole. A second nut is provided in the second limiting groove. The first fastener passes through the second mounting hole and the first mounting hole and is threadedly connected to the second nut.

[0021] As an optional solution for the universal changeover switch, the end cap is provided with a clearance groove on the side facing the adapter plate, the clearance groove being used to avoid the first nut.

[0022] As an optional feature of the universal changeover switch, the adapter plate has several center distance markings on the side away from the switch body. These center distance markings indicate the center distance between the adapter holes in the same group and the second center hole; and / or

[0023] The end cap has a first arrow indicator on the side facing the adapter plate, and the adapter plate has a second arrow indicator on the side away from the end cap. The first arrow indicator and the second arrow indicator have the same pointing direction.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] The universal changeover switch provided by this utility model has an end cap with a first central hole installed at one end of the wiring module. The main shaft passes through the first central hole and extends out. The socket on the end cap is arranged around the first central hole. By inserting limiting members on the end cap, the rotation of the follower and the main shaft can be blocked, preventing the main shaft from rotating 360 degrees in some scenarios. In other application scenarios, according to the actual angle range to be limited, the two limiting members of the angle limiting unit are inserted into the corresponding sockets, and the follower of the angle limiting unit is installed on the main shaft. The rotation angle range of the main shaft is limited by the follower being stopped by the two limiting members. In some confined installation spaces, after the handle is installed on the main shaft, the rotation angle of the universal changeover switch's main shaft can be limited, preventing the handle from interfering with external structures. Attached Figure Description

[0026] Figure 1 This is a first-view assembly diagram of the universal changeover switch in an embodiment of this utility model;

[0027] Figure 2 This is an exploded view of the switch body in an embodiment of this utility model;

[0028] Figure 3 This is a schematic diagram of the end cap structure in an embodiment of this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the follower pendulum in an embodiment of this utility model;

[0030] Figure 5 This is an assembly diagram of the switch body and the adapter unit in an embodiment of this utility model;

[0031] Figure 6 This is a first exploded view of the switch body and the transfer unit in this utility model embodiment;

[0032] Figure 7 This is a second exploded view of the switch body and the transfer unit in this embodiment of the present invention;

[0033] Figure 8 This is a first-view structural schematic diagram of the adapter plate in an embodiment of this utility model;

[0034] Figure 9 This is a structural schematic diagram of the adapter plate from a second perspective in an embodiment of this utility model;

[0035] Figure 10 This is a second-view assembly diagram of the universal changeover switch in an embodiment of this utility model;

[0036] Figure 11 yes Figure 10 A magnified view of a portion of point A in the middle.

[0037] In the picture:

[0038] 1. Switch body; 2. Adapter unit; 3. Mounting cover; 4. Nameplate; 5. Handle; 6. First fastener; 7. Second fastener;

[0039] 11. End cap; 111. First center hole; 112. First mounting hole; 113. First arrow indicator; 114. Second limiting groove; 115. Insertion hole; 116. Relief groove; 117. Third mounting hole; 12. Second nut; 13. Follower swing element; 131. Annular part; 132. Limiting protrusion; 14. Limiting element; 15. Wiring module; 16. Spindle;

[0040] 21. Adapter plate; 211. Second center hole; 212. Second mounting hole; 213. Adapter hole; 214. First limiting groove; 215. Fastener; 216. Annular limiting rib; 217. Center distance dimension mark; 218. Second arrow indicator mark; 22. First nut. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0042] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0043] 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.

[0044] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0045] To limit the rotation angle range of the spindle of the universal changeover switch and prevent interference between the handle and external structures after the handle is installed on the spindle, this embodiment provides a universal changeover switch, which is described below in conjunction with... Figures 1 to 11 The specific content of this embodiment will be described in detail.

[0046] like Figures 1 to 4 As shown, the universal changeover switch in this embodiment includes a switch body 1, an end cap 11 with a first central hole 111, and an angle limiting unit. The switch body 1 includes a wiring module 15 and a spindle 16. One end of the spindle 16 is inserted into the wiring module 15, and rotating the spindle 16 can switch the positions of the wiring module 15. The end cap 11 with the first central hole 111 is disposed at one end of the wiring module 15, and the spindle 16 passes through the first central hole 111. At least one insertion hole 115 is provided on the side of the end cap 11 facing the wiring module 15, and multiple insertion holes 115 are arranged circumferentially around the first central hole 111 (i.e., multiple insertion holes 115 can be arranged around the first central hole 111). The angle limiting unit includes a follower oscillator 13 and a limiting member 14. The follower oscillator 13 is disposed on the spindle 16, and the limiting member 14 is inserted into the corresponding insertion hole 115. The follower oscillator 13 is stopped from rotating by the limiting member 14.

[0047] The universal changeover switch provided by this utility model has an end cap 11 with a first central hole 111 installed at one end of the wiring module 15. The main shaft 16 passes through the first central hole 111 and extends out. Multiple insertion holes 115 on the end cap 11 are arranged circumferentially with the first central hole 111 as the center. According to the actual angle range to be limited, the two limiting members 14 of the angle limiting unit are inserted into the corresponding insertion holes 115, and the follower swing member 13 of the angle limiting unit is installed on the main shaft 16. The rotational angle range of the main shaft 16 is limited by the follower swing member 13 stopping the rotation of the two limiting members 14. In a confined installation space, traditional universal changeover switches, due to the lack of angle limiting on the main shaft 16, are prone to interference with external structures when the handle 5 is installed on the main shaft 16 and rotated 360 degrees, leading to operational difficulties or even equipment damage. The universal changeover switch of this embodiment perfectly solves this problem. Before installation, technicians can accurately calculate the maximum allowable rotational angle range of the main shaft 16 based on the actual installation space dimensions and the layout of the surrounding external structures. Then, simply insert the two limiting members 14 of the angle limiting unit into the corresponding sockets 115, and install the follower swing member 13 onto the main shaft 16 to easily limit the rotation angle of the main shaft 16. When the operator rotates the handle 5 to drive the main shaft 16 to rotate, the main shaft 16 can only rotate freely within the preset angle range, avoiding interference with external structures and ensuring the safe and stable operation of the universal changeover switch. In addition, this angle limiting design also improves the operational safety of the universal changeover switch. In some applications with high requirements for electrical control precision, if the main shaft 16 can rotate without restriction, it may lead to misoperation, causing electrical faults or even safety accidents. However, through the precise limitation of the angle limiting unit, the operator can only operate within the specified angle range, greatly reducing the risk of misoperation and ensuring the safety of personnel and equipment. At the same time, since there are many sockets 115 on the end cover 11 and they are regularly distributed, the angle limiting range can be flexibly adjusted according to different application requirements. Whether it's precision control on an industrial automated production line or simple switching operations in a power system, specific angle restrictions can be met by selecting the appropriate position of the socket 115. This allows the universal changeover switch of this embodiment to be widely used in various electrical control scenarios, with broad market prospects and application value.

[0048] For example, such as Figure 4As shown, the follower pendulum 13 includes an annular portion 131 and a limiting protrusion 132. The limiting protrusion 132 is connected to the outer annular wall of the annular portion 131 and extends radially along the annular portion 131. The annular portion 131 is sleeved on the main shaft 16, and the limiting protrusion 132 is prevented from rotating by the limiting member 14. When two limiting members 14 are inserted on the end cap, the limiting protrusion 132 is prevented from rotating within the angle range defined by the two limiting members 14. The annular portion 131, as the main structure of the follower pendulum 13, is sleeved on the main shaft 16, providing stable support and a mounting base for the entire follower pendulum 13. In this embodiment, the inner hole of the annular portion 131 is machined into a polygon. This polygonal inner hole cooperates with the polygonal prism shape at one end of the subsequent main shaft 16 to form a reliable connection. Because the edges and corners of the polygon correspond to each other, when the main shaft 16 attempts to rotate relative to the annular portion 131, the edges of the polygon block each other, generating strong friction and resistance, thereby effectively suppressing unnecessary rotation of the annular portion 131 relative to the main shaft 16. This design avoids the problem of angle limiting failure caused by loosening or wobbling of the follower 13 during the rotation of the main shaft 16, greatly improving the accuracy and reliability of angle limiting. The limiting protrusion 132 is tightly connected to the outer ring wall of the annular portion 131 and extends naturally along the radial direction of the annular portion 131, forming a protruding "limiting antenna". This design allows the limiting protrusion 132 to have a certain extension range in space, enabling effective contact and interference with the subsequently installed limiting member 14, thereby realizing the angle limiting function. When the main shaft 16 rotates and drives the follower 13 to rotate synchronously, the limiting protrusion 132 acts like a "probe", "detecting" the position of the limiting member 14 on the rotation path of the main shaft 16. Once the spindle 16 rotates to the set angle boundary, the limiting protrusion 132 will collide with the limiting member 14, preventing the spindle 16 from continuing to rotate, thereby precisely limiting the rotation angle range of the spindle 16.

[0049] For example, such as Figure 3As shown, at least two sets of sockets 115 are provided. Each set of sockets 115 has the same center distance from the first central hole 111, but the center distances between the sockets 115 in different sets are different. Specifically, in the design drawings or actual manufacturing process of the end cap 11, a set of sockets 115 is evenly distributed at a specific radius position with the first central hole 111 as the center, through precise geometric calculation and positioning. For example, if the center distance between the first set of sockets 115 and the first central hole 111 is set to R1, then all sockets 115 in this set are located on a virtual circle with the first central hole 111 as the center and a radius of R1, and the central angle interval between adjacent sockets 115 is uniform, ensuring the balance and symmetry of the socket distribution. Different sets of sockets 115 achieve differentiated layouts by adjusting their center distance from the first central hole 111. The center distance R2 between the second group of sockets 115 and the first central hole 111 is different from R1, and the center distance R3 between the third group of sockets 115 is different from the first two groups, and so on. This design with different center distances results in multiple groups of sockets 115 forming a concentric circle distribution with different radii on the end cap 11. Overall, the surface of the end cap 11 presents a layout of sockets 115 that gradually diffuses from the inside out. Each group of sockets 115 represents a specific installation radius range, providing a variety of positional options for the subsequent installation of the limiting member 14. Because the center distances between different groups of sockets 115 and the first central hole 111 are different, the relative positional relationship between the limiting member 14 installed on different groups of sockets 115 and the limiting protrusion 132 of the follower swing member 13 will also change. If the limiting member 14 is installed on a group of sockets 115 that is closer to the first central hole 111, the blocking effect may not be ideal because the contact lever arm between the limiting protrusion 132 and the limiting member 14 is short. At this point, the installer can replace the limiting member 14 with an insertion hole 115 that is farther away from the first center hole 111, increasing the length of the contact lever arm, thereby improving the blocking ability of the limiting member 14 against the limiting protrusion 132 and enhancing the stability of the angle limiting. By adding multiple sets of insertion holes 115, the installable positions of the limiting member 14 on the end cover 11 can be expanded, making it easier for the limiting member 14 to block the limiting protrusion 132 of the follower swing member 13.

[0050] In traditional universal changeover switch installation methods, the positions of the connection holes on the mounting plate 3 are fixed. These connection holes are precisely positioned and machined during manufacturing to meet the installation requirements of a specific model or size of switch body 1. However, switch bodies 1 come in various sizes in practical applications, and the layout and spacing of the mounting holes on the end caps 11 often differ between different sizes of switch bodies 1. This leads to a common assembly problem: when the connection holes on the mounting plate 3 do not correspond to the mounting holes on the end cap 11, new holes need to be drilled on the mounting plate 3 or the end cap 11 of the switch body 1. Therefore, different sizes of switch bodies 1 require different mounting plates 3, reducing the assembly efficiency of the universal changeover switch.

[0051] In this embodiment, the universal changeover switch also includes a mounting plate 3 with a connection hole. A first mounting hole 112 is provided on the end cover 11. The universal changeover switch also includes a conversion unit 2 and a first fastener 6. The conversion unit 2 includes a conversion plate 21 with a second center hole 211, a second mounting hole 212, and several sets of conversion holes 213. The first fastener 6 passes through the second mounting hole 212 and connects to the first mounting hole 112, securely fixing the conversion plate 21 to the end cover 11. The second center hole 211 corresponds to the position of the first center hole 111 on the end cover 11 and the spindle 16. The spindle 16 passes through the first center hole 111 and the second center hole 211 sequentially and extends outwards, ensuring that the normal rotation and operation of the spindle 16 are not affected. The center distance between the adapter holes 213 in the same group and the second center hole 211 is the same, while the center distance between the adapter holes 213 in different groups and the second center hole 211 is different. This design allows the adapter plate 21 to form multiple mounting points with different radii in space, like a highly flexible "adapter interface matrix". No matter how the position of the connecting holes on the mounting plate 3 changes, a corresponding adapter hole 213 can always be found on the adapter plate 21 for connection. For example, if the connecting hole on the mounting plate 3 is located close to its center, the adapter hole 213 with a smaller center distance can be selected for connection; if the connecting hole is located far away, the adapter hole 213 with a larger center distance can be selected. Since the adapter plate 21 is provided with multiple sets of adapter holes 213, different mounting plates 3 can be adapted by using multiple sets of adapter holes 213, eliminating the need to re-drill holes on the mounting plate 3 or the end cover 11 of the switch body 1, thus improving the assembly efficiency of the universal changeover switch.

[0052] Furthermore, such as Figure 1 Combination Figures 5 to 11As shown, the adapter plate 21 has multiple first limiting grooves 214 on the side facing the end cap 11. These first limiting grooves 214 communicate with corresponding adapter holes 213, forming a unique "groove-hole" mating structure. The adapter unit 2 also includes multiple first nuts 22, which are embedded in the first limiting grooves 214. The size and contour of the first limiting grooves 214 match the external dimensions of the first nuts 22, ensuring that the first nuts 22 are stably and accurately embedded within them. The second fastener 7 can pass through the connecting hole and adapter hole 213 and be threadedly connected to the first nuts 22. The first nuts 22 are typically made of high-strength metal materials, such as stainless steel or alloy steel, to ensure sufficient strength and wear resistance to withstand the enormous tightening torque generated during the tightening process of the second fastener 7, guaranteeing the firmness and reliability of the connection. The second fastener 7 uses a standard-sized bolt, whose thread specification is compatible with the internal thread of the first nuts 22. During actual installation, the second fastener 7 can smoothly pass through the connecting hole on the mounting plate 3 and the adapter hole 213 on the adapter plate 21, and then be threadedly connected to the first nut 22 embedded in the first limiting groove 214. By rotating the second fastener 7, the thread between it and the first nut 22 is gradually tightened, thereby generating a strong axial tensile force, which tightly fixes the adapter plate 21, the mounting plate 3, and the end cap 11 together, forming a stable and reliable integral structure. In this embodiment, by setting the first nut 22 in the first limiting groove 214, the internal thread can be avoided by directly machining the inner wall of the adapter hole 213, reducing manufacturing steps. During manufacturing, it is only necessary to machine the first limiting groove 214 on the adapter plate 21, and then embed the pre-machined first nut 22 into it. This design greatly simplifies the processing technology of the adapter plate 21, reduces processing steps and required equipment, lowers the skill level requirements of operators, thereby significantly shortening the production cycle and improving production efficiency. Meanwhile, since the first nut 22 can be mass-produced using standard parts, its quality is more stable and reliable, avoiding quality problems caused by directly machining internal threads, reducing scrap rate, and further saving production costs.

[0053] Furthermore, at least two latching members 215 are provided at the opening of the first limiting groove 214. These latching members 215 are evenly spaced along the circumference of the opening of the first limiting groove 214. One end of each latching member 215 is elastically connected to the wall of the first limiting groove 214 (meaning that after one end of the latching member 215 is connected to the wall of the first limiting groove 214, the latching member 215 undergoes a recoverable elastic deformation under force, facilitating the installation of the first nut 22). The inner diameter of the space enclosed between the other ends of the at least two latching members 215 is smaller than the outer contour dimension of the first nut 22. In this embodiment, the head of each latching member 215 is a right-angled triangle (or wedge-shaped), with the inclined plane of the right-angled triangle located on the inner side of the latching member 215. By adding two latching members 215, the first nut 22 can be blocked, preventing it from falling out of the first limiting groove 214. During the process of inserting the first nut 22 into the first limiting groove 214, the first nut 22 is placed between the two locking pieces 215. By pressing the first nut 22 downward, the gap between the two locking pieces 215 (which are in a compressed state and can generate sufficient elastic deformation, while reliably locking the first nut 22 after insertion) is widened. After the first nut 22 enters the first limiting groove 214, the two locking pieces 215 return to their original state, and the first nut 22 is blocked by the locking pieces 215 at the opening of the first limiting groove 214.

[0054] For example, in this embodiment, the material of the fastener 215 is consistent with that of the adapter plate 21, both being plastic parts. Plastic materials have advantages such as light weight, low cost, and high plasticity, making them suitable for mass production. Furthermore, through a reasonable plastic formula and molding process, the fastener 215 can possess good elasticity and wear resistance. During injection molding, the fastener 215 and the adapter plate 21 are integrally formed, ensuring the connection strength between them and the stability of the overall structure.

[0055] Furthermore, such as Figure 6 As shown, multiple third mounting holes 117 are circumferentially spaced on the end cover 11, with the first central hole 111 as the center. The center distance between the third mounting holes 117 and the first central hole 111 is greater than the center distance between the first mounting holes 112 and the first central hole 111. By adding multiple third mounting holes 117, the switch body 1 can be connected to the external fixed object by passing a self-tapping screw through the through hole of the external fixed object and then connecting it to the third mounting hole 117.

[0056] Furthermore, an annular limiting rib 216 is provided on the side of the adapter plate 21 facing the end cover 11. The shape of the cavity formed by the annular limiting rib 216 around its perimeter is adapted to the shape of the end cover 11, and the end cover 11 is inserted into the cavity formed by the annular limiting rib 216. Since the shape of the annular limiting rib 216 is the same as the shape of the end cover 11, the end cover 11 will be guided by the annular limiting rib 216 in all directions during the insertion process, which can improve the assembly accuracy of the adapter plate 21 and the switch body 1 during the assembly process.

[0057] Furthermore, a second limiting groove 114 is provided on the side of the end cap 11 away from the adapter plate 21. The second limiting groove 114 communicates with the corresponding first mounting hole 112. The switch body 1 also includes a second nut 12. The second limiting groove 114 is embedded with the second nut 12. The first fastener 6 passes through the second mounting hole 212 and the first mounting hole 112 and is threadedly connected to the second nut 12. The function of the second limiting groove 114 and the second nut 12 in this embodiment is similar to that of the first limiting groove 214 and the first nut 22 mentioned above, and will not be described in detail here. For example, in this embodiment, the first limiting groove 214 is a polygonal groove, and the outer wall surface of the first nut 22 abuts against the groove wall of the first limiting groove 214 to prevent rotation; the second limiting groove 114 is a polygonal groove, and the outer wall surface of the second nut 12 abuts against the groove wall of the second limiting groove 114 to prevent rotation.

[0058] Furthermore, such as Figure 10 and Figure 11 As shown, the end cap 11 is provided with a clearance groove 116 on the side facing the adapter plate 21. The clearance groove 116 is used to avoid the first nut 22, so as to avoid structural interference between the first nut 22 and the end cap 11 due to the position and size of the first nut 22 on the adapter plate 21.

[0059] Optionally, such as Figure 8 As shown, the adapter plate 21 has several center distance dimension markings 217 on the side away from the switch body 1. These markings indicate the center distance between the adapter hole 213 and the second center hole 211 in the same group, facilitating customer installation. For example, in this embodiment, the center distance dimension markings 217 include 55mm and 48mm; other dimensions may be included in other embodiments, which are not limited here. Optionally, such as... Figure 6 Combination Figure 8As shown, a first arrow indicator 113 is provided on the side of the end cover 11 facing the adapter plate 21, and a second arrow indicator 218 is provided on the side of the adapter plate 21 away from the end cover 11. The first arrow indicator 113 and the second arrow indicator 218 indicate the same direction. By adding the first arrow indicator 113 and the second arrow indicator 218, it helps to guide the assembly personnel to install in the correct direction, avoid assembly errors, and ensure the uniqueness of the assembly direction of the switch body 1.

[0060] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A universal transfer switch comprising a switch body (1) including a wiring module (15) and a main shaft (16) inserted into the wiring module (15) at one end, and rotation of the main shaft (16) is capable of switching the gear position of the wiring module (15), characterized in that, The switch body (1) also includes: An end cap (11) having a first central hole (111) is disposed at one end of the wiring module (15), the spindle (16) passes through the first central hole (111), and at least one insertion hole (115) is provided on the side of the end cap (11) facing the wiring module (15), and the insertion hole (115) is arranged around the first central hole (111). Angle limiting unit includes a follower swing member (13) and a limiting member (14). The follower swing member (13) is disposed on the main shaft (16), and the limiting member (14) is inserted into the insertion hole (115). The follower swing member (13) is stopped from rotating by the limiting member (14).

2. The universal transfer switch of claim 1, wherein, The follower swing member (13) includes an annular portion (131) and a limiting protrusion (132). The limiting protrusion (132) is connected to the outer ring wall of the annular portion (131) and extends radially along the annular portion (131). The annular portion (131) is sleeved on the main shaft (16). The limiting protrusion (132) is stopped from rotating by the limiting member (14).

3. The universal changeover switch according to claim 2, characterized in that, The socket (115) is provided in at least two groups, and the center distance between the socket (115) in each group and the first central hole (111) is the same. The center distance between the socket (115) in different groups and the first central hole (111) is different.

4. The universal changeover switch according to claim 1, characterized in that, The end cap (11) is provided with a first mounting hole (112), and the universal changeover switch further includes: The adapter unit (2) includes an adapter plate (21), on which a second center hole (211) and a second mounting hole (212) are provided; The first fastener (6) passes through the second mounting hole (212) and connects to the first mounting hole (112). The main shaft (16) passes through the first center hole (111) and the second center hole (211) in sequence and extends out.

5. The universal changeover switch according to claim 4, characterized in that, The universal changeover switch also includes a mounting plate (3), which has a connection hole. The adapter plate (21) has an adapter hole (213). The adapter plate (21) has a first limiting groove (214) on the side facing the end cap (11). The first limiting groove (214) communicates with the corresponding adapter hole (213). A first nut (22) is embedded in the first limiting groove (214). A second fastener (7) can pass through the connection hole and the adapter hole (213) and be threadedly connected to the first nut (22).

6. The universal changeover switch according to claim 5, characterized in that, At least two fasteners (215) are provided at the opening of the first limiting groove (214). The at least two fasteners (215) are equally spaced along the circumference of the opening of the first limiting groove (214). One end of the fastener (215) is elastically connected to the groove wall of the first limiting groove (214). The inner diameter of the space enclosed between the other ends of the at least two fasteners (215) is smaller than the outer contour dimension of the first nut (22).

7. The universal changeover switch according to claim 5, characterized in that, The adapter plate (21) is provided with multiple sets of adapter holes (213), and the center distance between the adapter holes (213) and the second central hole (211) is different for different sets; and / or The end cap (11) is provided with a plurality of third mounting holes (117) spaced circumferentially around the first central hole (111). The center distance between the third mounting holes (117) and the first central hole (111) is greater than the center distance between the first mounting hole (112) and the first central hole (111).

8. The universal changeover switch according to claim 4, characterized in that, The adapter plate (21) is provided with an annular limiting rib (216) on the side facing the end cap (11). The shape of the cavity formed by the annular limiting rib (216) is adapted to the shape of the end cap (11). The end cap (11) is inserted into the cavity formed by the annular limiting rib (216).

9. The universal changeover switch according to claim 4, characterized in that, The end cap (11) is provided with a second limiting groove (114) on the side away from the adapter plate (21). The second limiting groove (114) communicates with the corresponding first mounting hole (112). A second nut (12) is provided in the second limiting groove (114). The first fastener (6) passes through the second mounting hole (212) and the first mounting hole (112) and is threadedly connected to the second nut (12).

10. The universal changeover switch according to claim 5, characterized in that, The end cap (11) is provided with a relief groove (116) on the side facing the adapter plate (21), and the relief groove (116) is used to avoid the first nut (22).

11. The universal changeover switch according to claim 5, characterized in that, The adapter plate (21) has a plurality of center distance dimension markings (217) on the side away from the switch body (1). The center distance dimension markings (217) are used to indicate the center distance between the adapter hole (213) and the second center hole (211) in the same group; and / or The end cap (11) is provided with a first arrow indicator (113) on the side facing the adapter plate (21), and the adapter plate (21) is provided with a second arrow indicator (218) on the side away from the end cap (11). The first arrow indicator (113) and the second arrow indicator (218) have the same pointing direction.

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