Dual voltage switching mechanism

Abstract

The application provides a double-voltage switching mechanism, comprising switching conductive structures, wherein the switching conductive structures comprise slide rods, one end of each of the slide rods is provided with a second conductive ring, the other end of each of the slide rods is provided with an auxiliary strip, the top and bottom of each of the auxiliary strips are provided with a tension spring, and the number of the slide rods is multiple. The application has the advantages that the switching structure arranged to be rotatable is provided, when the conductive structure of an incoming power end is in contact with one switching conductive structure, another switching conductive structure is in contact with the conductive connection structure of an outgoing power end, the conduction of current is realized, then the two switching conductive structures are separated from the conductive connection structure and then are in contact again to realize the switching of voltage, the two switching conductive structures are quickly separated and then are switched again to realize the conduction of voltage, the generation of electric arc can be reduced, and the damage of electric arc to the contact is avoided.

Description

Technical Field

[0001] This invention mainly relates to the field of dual voltage switching, and specifically to a dual voltage switching mechanism. Background Technology

[0002] In electrical equipment and power systems, in order to adapt to different working environments or load requirements, it is often necessary to equip them with mechanisms that can switch between different voltage levels (such as high voltage and low voltage). Such devices can be collectively referred to as dual voltage switching mechanisms.

[0003] Traditional voltage switching mechanisms, whether using mechanical contactors, relays, or manually operated selector switches, essentially change the circuit path by connecting and disconnecting physical contacts. However, it is precisely during this contact separation and closure process that a long-standing and difficult-to-eliminate technical problem emerges—the electric arc generated at the moment of switching.

[0004] The high temperature of an electric arc (reaching thousands of degrees Celsius) melts and vaporizes the metal material on the contact surface, causing contact erosion, deformation, and material transfer. Over time, this will lead to increased contact resistance, poor contact, abnormal temperature rise, and ultimately a significant reduction in the electrical and mechanical lifespan of the switching mechanism.

[0005] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Summary of the Invention

[0006] 1. The technical problem that the invention aims to solve: The present invention provides a dual voltage switching mechanism to solve the technical problems existing in the background art.

[0007] 2. Technical Solution: To achieve the above objectives, the technical solution provided by the present invention is as follows: a dual voltage switching mechanism, comprising a protective housing structure, wherein a conductive connection structure is slidably connected inside the protective housing structure, a switching structure is rotatably connected inside the protective housing structure, and a switching conductive structure is slidably connected inside the switching structure; The conductive switching structure includes a slide rod, one end of which is provided with a second conductive ring, and the other end of which is provided with an auxiliary strip. The top and bottom of the auxiliary strip are provided with tension springs, and the number of slide rods is set to multiple.

[0008] Furthermore, the protective housing structure includes a housing body, a servo motor is provided on one side of the top of the housing body, a drive gear is provided at the output end of the servo motor, and a mounting groove is provided on the top of the housing body.

[0009] Furthermore, the outer wall of the housing body is provided with three side plates, the inside of the side plates is provided with insertion holes, the inside of the side plates is provided with threaded holes, the insertion holes and the threaded holes are connected, and the number of threaded holes and insertion holes is set to multiple, and the multiple threaded holes and insertion holes are vertically distributed inside the side plates.

[0010] Furthermore, air guide grooves are provided on both sides of the inner wall of the shell body, a support is provided on the inner wall of the shell body, and a guide strip is provided on the outer wall of the support, with the cross-section of the guide strip being an isosceles trapezoid.

[0011] Furthermore, the conductive connection structure includes a mounting ring and a second conductive post. The mounting ring is threaded to the inner wall of the threaded hole, and a wire-laying groove is provided inside the mounting ring. An adjusting bolt is threaded to the inside of the wire-laying groove, and a first conductive post is provided on the outer wall of the mounting ring.

[0012] Furthermore, a sliding ring is provided at one end of the second conductive post, and a first conductive ring is provided at the other end of the second conductive post.

[0013] Furthermore, the switching structure includes a rotating ring rotatably connected to the interior of the protective housing structure, and a rotating gear ring is provided on the top of the rotating ring, which meshes with the drive gear.

[0014] Furthermore, an auxiliary groove is provided inside the rotating ring, a sliding groove is provided on the outer wall of the rotating ring, a fitting groove is provided inside the sliding groove, the fitting groove is connected to the auxiliary groove, and positioning grooves are provided on both sides inside the rotating ring.

[0015] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this invention has the following advantages: This invention utilizes a rotatable switching structure. When the conductive structure at the power input end contacts one switching conductive structure, the other switching conductive structure contacts the conductive connection structure at the power output end, thus enabling current conduction. Then, the two switching conductive structures separate from the conductive connection structure and re-contact to achieve voltage switching. The rapid separation and re-switching of the two structures can reduce the generation of electric arcs and prevent electric arcs from causing damage to electric shocks. The switching conductive structure and the guide bar work together to move the position of the switching conductive structure at different positions during the rotation of the switching structure. When the switching conductive structure is retracted into the inside of the fitting groove, and the inner side of the first conductive ring contacts the inner wall of the slide groove, the first conductive ring and the second conductive ring separate to achieve disconnection. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the protective shell structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the switching structure of the present invention; Figure 4 This is a schematic cross-sectional view of the switching structure of the present invention. Figure 5 This is a three-dimensional unfolded schematic diagram of the conductive connection structure of the present invention; Figure 6 This is a three-dimensional structural diagram of the switching conductivity structure of the present invention; Figure 7 This is a schematic diagram of the process of the present invention.

[0017] Figure label: 1. Protective shell structure; 101. Shell body; 102. Servo motor; 103. Drive gear; 104. Mounting slot; 105. Side plate; 106. Insertion hole; 107. Threaded hole; 108. Air guide slot; 109. Bracket; 110. Guide bar; 2. Conductive connection structure; 201. Mounting ring; 202. Wire placement slot; 203. Adjusting bolt; 204. First conductive post; 205. Second conductive post; 206. Sliding ring; 207. First conductive ring; 3. Switching structure; 301. Rotating ring; 302. Auxiliary slot; 303. Fitting slot; 304. Sliding groove; 305. Positioning slot; 306. Rotating gear ring; 4. Switching conductive structure; 401. Sliding rod; 402. Second conductive ring; 403. Auxiliary bar; 404. Tension spring. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more complete description of the invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the invention will be more thorough and complete.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "page," "bottom," "inner," "outer," "clockwise," and "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 invention 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 invention.

[0020] 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 invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" 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 invention according to the specific circumstances.

[0022] Example 1

[0023] See attached document Figure 1-7 A dual voltage switching mechanism includes a protective housing structure 1, a conductive connection structure 2 slidably connected inside the protective housing structure 1, a switching structure 3 rotatably connected inside the protective housing structure 1, and a switching conductive structure 4 slidably connected inside the switching structure 3. The switching conductive structure 4 includes a slide rod 401. One end of the slide rod 401 is provided with a second conductive ring 402, and the other end of the slide rod 401 is provided with an auxiliary strip 403. The top and bottom of the auxiliary strip 403 are provided with tension springs 404. The number of slide rods 401 is set to multiple, and the number of switching conductive structures 4 is set to three sets, two sets are the power input end and one set is the power output end. The two sets of switching conductive structures 4 are connected to the conductive connection structure 2 of the power input end according to the rotation of the switching structure 3. The one set of switching conductive structures 4 of the power output end is connected to the conductive connection structure 2 of the two power output ends at different positions according to the rotation of the switching structure 3, so as to realize the rapid switching of voltage.

[0024] Furthermore, the protective housing structure 1 includes a housing body 101. A servo motor 102 is provided on one side of the top of the housing body 101. A drive gear 103 is provided at the output end of the servo motor 102. A mounting groove 104 is provided on the top of the housing body 101. Three side plates 105 are provided on the outer wall of the housing body 101. Insertion holes 106 and threaded holes 107 are provided inside the side plates 105. The insertion holes 106 and threaded holes 107 are connected. The number of threaded holes 107 and insertion holes 106 is set to multiple. The multiple threaded holes 107 and insertion holes 106 are vertically distributed inside the side plates 105. Air guide grooves 108 are provided on both sides of the inner wall of the housing body 101. A bracket 109 is provided on the inner wall of the housing body 101. A guide strip 110 is provided on the outer wall of the bracket 109. The cross-section of the guide strip 110 is an isosceles trapezoid.

[0025] Furthermore, the conductive connection structure 2 includes a mounting ring 201 and a second conductive post 205. The mounting ring 201 is threaded to the inner wall of the threaded hole 107. A cable feeding groove 202 is formed inside the mounting ring 201, and an adjusting bolt 203 is threaded into the cable feeding groove 202. A first conductive post 204 is provided on the outer wall of the mounting ring 201. A sliding ring 206 is provided at one end of the second conductive post 205, and a first conductive ring 207 is provided at the other end of the second conductive post 205, for connecting the external cable... Insert the cable into the cable tray 202, then manually rotate the adjusting bolt 203 to fix one end of the cable. The cable tray 202 is set to be multiple, and the cable is installed at different positions on the outer wall of the housing body 101. The conductive connection structure 2 is set to three sets, one set as the power input end and two sets as the power output end. Then, install the mounting ring 201 into the threaded hole 107. The mounting ring 201 is threadedly connected to the threaded hole 107, so that the first conductive post 204 on one side of the mounting ring 201 is connected to the sliding ring 206 to achieve electrical connection.

[0026] Furthermore, the switching structure 3 includes a rotating ring 301, which is rotatably connected to the interior of the protective housing structure 1. A rotating gear ring 306 is provided on the top of the rotating ring 301, meshing with the drive gear 103. An auxiliary groove 302 is provided inside the rotating ring 301, and a sliding groove 304 is provided on the outer wall of the rotating ring 301. A fitting groove 303 is provided inside the sliding groove 304, connecting to the auxiliary groove 302. Positioning grooves 305 are provided on both sides inside the rotating ring 301. When the protective housing structure 1 is needed, the cable is inserted into the cable tray 202 and fixed. When the first conductive ring 207 at the power input end contacts the inner wall of the sliding groove 304, the entire circuit is open, and the servo motor 102 is started. The servo motor 102 drives the main... The moving gear 103 rotates, and the driving gear 103 drives the rotating ring 301 to rotate inside the housing body 101 through the rotating gear ring 306. Then, the rotating ring 301 drives one end of the inner sliding rod 401 to contact the guide bar 110 at the corresponding position. The guide bar 110 pushes the sliding rod 401 to slide on the inner wall of the auxiliary groove 302 and makes the sliding rod 401 squeeze the tension spring 404, so that the second conductive ring 402 extends out from the inner wall of the fitting groove 303. At the same time, the second conductive ring 402 is in contact with the first conductive ring 207 inside the power input end. Meanwhile, the sliding rod 401 on the other side of the power output end moves to the position of the first conductive ring 207 on the side of the power output end. The tension spring 404 at the power output end and the first conductive ring 207 are in contact, thereby realizing the conduction of current. The two sets of power input end switching conductive structures 4 are electrically connected to one set of power output end switching conductive structures 4 respectively. When voltage switching is required, the rotating ring 301 rotates, and another set of power input switching conductive structures 4 contacts the power input conductive connection structure 2. The power output switching conductive structure 4 retracts and then resets to contact the other power output conductive connection structure 2, thereby realizing voltage switching. During the switching process of the slide bar 401, the slide bar 401 first separates from the guide bar 110, the tension spring 404 pushes the slide bar 401 to reset, the slide bar 401 drives the second conductive ring 402 to retract into the inside of the fitting groove 303, and then the slide bar 401 contacts the guide bar 110, pushing the second conductive ring 402 to extend out of the inside of the fitting groove 303 again to contact the first conductive ring 207, thereby completing the switching.

[0027] initial state In the initial state, the entire dual-voltage switching mechanism is in a power-off ready state. The servo motor 102 is not started and remains stationary. The rotating ring 301 is at the preset initial angle position and does not rotate. At this time, all the slide rods 401 are in a retracted state under the contraction force of the tension spring 404. Therefore, the second conductive ring 402 at one end of each slide rod 401 is completely housed inside the fitting groove 303 on the outer wall of the rotating ring 301.

[0028] Meanwhile, the conductive connection structure 2, installed on the side plate 105 of the protective housing structure 1, remains fixed. A safety air gap is maintained between the first conductive ring 207 at its end and the retracted second conductive ring 402, and the two are not in physical contact. Therefore, both the power input and output circuits are completely disconnected, and no current flows within the mechanism.

[0029] Connecting the circuit When the first voltage needs to be connected, the control system starts the servo motor 102. The output shaft of the servo motor 102 begins to rotate, driving the drive gear 103 fixed on the output shaft to rotate. Since the drive gear 103 meshes with the rotating gear ring 306 at the top of the rotating ring 301, the rotation of the gear drives the rotating gear ring 306, thereby driving the entire rotating ring 301 to begin to rotate precisely inside the protective housing structure 1.

[0030] As the rotating ring 301 rotates, the guide bar 110, which is fixed at a position on the inner wall of the housing body 101, begins to contact the auxiliary bar 403 at the end of the specific slide bar 401. The inclined surface design of the guide bar 110 converts the rotational motion into linear thrust, pushing the slide bar 401 to slide outward along the auxiliary groove 302 inside the rotating ring 301. This sliding process overcomes the tension of the tension spring 404, causing the spring to be stretched and store energy.

[0031] The outward movement of the slide bar 401 directly pushes the second conductive ring 402 at its front end to smoothly extend from the fitting groove 303 and enter the sliding groove 304 area on the outer wall of the rotating ring 301. When the rotating ring 301 rotates to a predetermined angle, this set of pushed-out second conductive rings 402 makes tight physical contact with the first conductive ring 207 on the power input conductive connection structure 2.

[0032] Almost simultaneously, through the connection of the conductors inside the rotating ring 301, another set of switching conductive structures 4 corresponding to the output end also completes the same extension and contact action, engaging with the first conductive ring 207 of the output end conductive connection structure 2. At this point, the current path is established: current flows in from the input cable, passes through the first conductive post 204, the sliding ring 206, and the second conductive post 205 to the first conductive ring 207, then is transmitted to the second conductive ring 402 through the contact point, and then through the conductive path inside the sliding rod 401 and the rotating ring 301, from the switching conductive structure 4 at the output end to the first conductive ring 207 at the output end, finally outputting. The first voltage circuit is activated.

[0033] Voltage switching process When it is necessary to switch from the currently conducting first voltage to the second voltage, the servo motor 102 is started again, driving the drive gear 103 and the rotating gear ring 306, so that the rotating ring 301 continues to rotate in the predetermined direction by an angle.

[0034] In the initial stage of rotation, the auxiliary bar 403 at the end of the slide bar 401 that was originally in contact with the power input gradually separates from the track of the guide bar 110. Once the contact is broken, the previously stretched tension spring 404 immediately releases its stored elastic potential energy, generating a strong retraction force. This force quickly pulls the slide bar 401 back to the initial position of the auxiliary groove 302.

[0035] The rapid retraction of the slide bar 401 causes the second conductive ring 402 at its front end to detach from the contact surface of the first conductive ring 207 in a very short time and completely retract into the fitting groove 303. This "rapid misalignment separation" design greatly suppresses the electric arc generated at the contact point between the two conductive rings at the moment of separation, effectively preventing contact point ablation. At this time, the original power supply circuit is completely cut off.

[0036] As the rotating ring 301 continues to rotate, another set of switching conductive structures 4 belonging to the second voltage channel begins to enter the working position. The auxiliary bar 403 of its slide bar 401 contacts the same guide bar 110 and is pushed outward, and the tension spring 404 is re-stretched. The second conductive ring 402 at the front end of this set of slide bars 401 then extends out of the fitting groove 303.

[0037] When the rotating ring 301 reaches the second predetermined angle, the new second conductive ring 402 makes tight contact with the first conductive ring 207 at the second voltage input terminal. Simultaneously, the connection at the output terminal is also switched synchronously to the channel matching the second voltage through the internal linkage of the rotating ring 301. A new current path is established, the second voltage is successfully connected and output, completing the entire voltage switching process.

[0038] Switching to complete status After the voltage switching action is completed, the servo motor 102 stops rotating and locks its position, and the rotating ring 301 is fixed at a new angle corresponding to the second voltage.

[0039] At this time, the slide bar 401 corresponding to the second voltage path remains extended under the support of the guide bar 110, and its tension spring 404 is in a stretched state, continuously providing stable contact pressure to ensure low and reliable contact resistance between the second conductive ring 402 and the first conductive ring 207. Meanwhile, the slide bar 401 corresponding to the disconnected first voltage path is completely retracted under the action of its own tension spring 404, and its second conductive ring 402 is securely placed in the fitting groove 303, without any contact with any of the first conductive rings 207, thus achieving complete electrical isolation.

[0040] The entire mechanism returned to a stable state, awaiting the next activation or switching command. Through precise angle control of the servo motor 102 and the mechanical cooperation between the guide bar 110 and the tension spring 404, the mechanism achieves a fast, reliable, and low-arc dual-voltage switching function. The air guide groove 108 inside the housing also helps dissipate heat and disperse free gas during switching, further improving the electrical life and safety of the mechanism.

[0041] The above-described embodiments are merely illustrative of certain implementations of the present invention, and are described in a relatively specific and detailed manner. However, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A dual-voltage switching mechanism, characterized in that: include The protective shell structure (1) has a conductive connection structure (2) that is slidably connected inside the protective shell structure (1), a switching structure (3) that is rotatably connected inside the protective shell structure (1), and a switching conductive structure (4) that is slidably connected inside the switching structure (3). The switching conductive structure (4) includes a slide bar (401), one end of which is provided with a second conductive ring (402), and the other end of which is provided with an auxiliary bar (403). The top and bottom of the auxiliary bar (403) are provided with tension springs (404), and the number of slide bars (401) is set to multiple.

2. The dual-voltage switching mechanism according to claim 1, characterized in that: The protective housing structure (1) includes a housing body (101), a servo motor (102) is provided on one side of the top of the housing body (101), an active gear (103) is provided at the output end of the servo motor (102), and a mounting groove (104) is provided on the top of the housing body (101).

3. The dual-voltage switching mechanism according to claim 2, characterized in that: The outer wall of the housing body (101) is provided with three side plates (105). The side plates (105) have insertion holes (106) and threaded holes (107) inside. The insertion holes (106) and threaded holes (107) are connected. The number of threaded holes (107) and insertion holes (106) is set to multiple. The multiple threaded holes (107) and insertion holes (106) are vertically distributed inside the side plates (105).

4. The dual-voltage switching mechanism according to claim 2, characterized in that: Air guide grooves (108) are provided on both sides of the inner wall of the housing body (101), a bracket (109) is provided on the inner wall of the housing body (101), and a guide strip (110) is provided on the outer wall of the bracket (109). The cross-section of the guide strip (110) is an isosceles trapezoid.

5. The dual-voltage switching mechanism according to claim 1, characterized in that: The conductive connection structure (2) includes a mounting ring (201) and a second conductive post (205). The mounting ring (201) is threaded to the inner wall of the threaded hole (107). A wire feeding groove (202) is provided inside the mounting ring (201). An adjusting bolt (203) is threaded inside the wire feeding groove (202). A first conductive post (204) is provided on the outer wall of the mounting ring (201).

6. The dual-voltage switching mechanism according to claim 5, characterized in that: A sliding ring (206) is provided at one end of the second conductive post (205), and a first conductive ring (207) is provided at the other end of the second conductive post (205).

7. The dual-voltage switching mechanism according to claim 1, characterized in that: The switching structure (3) includes a rotating ring (301) which is rotatably connected to the inside of the protective shell structure (1). A rotating toothed ring (306) is provided on the top of the rotating ring (301), and the rotating toothed ring (306) meshes with the drive gear (103).

8. A dual-voltage switching mechanism according to claim 7, characterized in that: An auxiliary groove (302) is provided inside the rotating ring (301), a sliding groove (304) is provided on the outer wall of the rotating ring (301), a fitting groove (303) is provided inside the sliding groove (304), the fitting groove (303) is connected to the auxiliary groove (302), and positioning grooves (305) are provided on both sides inside the rotating ring (301).

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