Automatic switching mechanism of dual-power automatic change-over switch

Abstract

The utility model relates to an automatic switching mechanism of a dual-power automatic change-over switch, which comprises a shell, a motor and a switching assembly. The conversion assembly comprises a conversion shaft, a driving disc, a limiting elastic piece arranged on the driving disc in a linkage mode, a rotating shaft rotationally arranged on the conversion shaft and matched with the motor in a linkage mode, a manual operation rotating disc arranged on the rotating shaft in a linkage mode, and a torsional spring arranged between the manual operation rotating disc and the driving disc. The manual operation rotating disc is provided with two driving arms matched with the limiting elastic piece, the two ends of the limiting elastic piece are provided with two bending limiting parts matched with the two driving arms, the driving arms act along with the manual operation shaft disc and abut against the bending limiting parts, and limiting matching of the driving arms and the bending limiting parts is formed. The utility model has the advantages of simple structure, stable and reliable performance, rapid and reliable conversion and high breaking capacity.

Description

Technical Field

[0001] The utility model relates to a dual power automatic conversion switch, in particular to an automatic conversion mechanism of the dual power automatic conversion switch. Background Art

[0002] At present, the dual power automatic transfer switch, as the name implies, is to automatically connect to the backup power supply through the dual power switch when the power is suddenly cut off, so that our operation will not be interrupted and can continue to operate. The purpose of the dual power automatic transfer switch is simply to use one line for common use and one line for backup. When the common power suddenly fails or the power is cut off, the dual power switch is used to automatically switch to the backup power supply so that the equipment can still operate normally. Many industries and departments have very high requirements for the reliability of power supply. In order to ensure the continuity of power supply, many important occasions use dual power automatic transfer switches to power electrical appliances. As an essential device for power switching, the requirements for its technical performance are also getting higher and higher. The conversion speed of the automatic conversion mechanism of the existing dual power automatic transfer switch is slow, and the rapid opening or closing of the dual power automatic transfer switch cannot be realized, and the breaking capacity is low. The structural design of the existing automatic conversion mechanism is relatively complex, and the conversion reliability of the two power supplies is low, which can easily cause the circuit breaker switch to fail to switch on and off, thereby seriously affecting the working stability of the dual power automatic conversion switch, and easily causing the electrical interlock and mechanical interlock to fail. In severe cases, the common and backup power supplies will run in parallel, causing the load equipment to burn out, posing a safety hazard. Summary of the invention

[0003] The utility model aims to overcome the defects of the prior art and provide an automatic switching mechanism of a dual power automatic switching switch with simple structure, stable and reliable performance, rapid and reliable switching and high breaking capacity.

[0004] To achieve the above-mentioned purpose, the utility model adopts an automatic conversion mechanism of a dual power automatic conversion switch, including a shell, a motor, and a conversion component linked with the motor. The conversion component includes a conversion shaft rotatably set on the shell and used to drive the contact system to perform two-way power switching, a driving disk linked with the conversion shaft, a limiting spring linked with the driving disk, a rotating shaft rotatably set on the conversion shaft and linked with the motor, a manual operating turntable linked with the rotating shaft, and a torsion spring set between the manual operating turntable and the driving disk. The manual operating turntable has two driving arms that cooperate with the limiting springs, and two ends of the limiting spring have two bending limiting parts that cooperate with the two driving arms. The driving arm moves with the manual operating shaft and contacts the bending limiting part, and constitutes a limiting cooperation between the driving arm and the bending limiting part.

[0005] The beneficial effects of the above structure are: the automatic conversion mechanism adopts an energy storage structure design, the manual operation turntable drives the driving turntable to rotate rapidly through the torsion spring, and the driving turntable drives the conversion shaft to perform rapid conversion, thereby effectively improving the conversion speed of the automatic conversion mechanism. The two driving arms of the manual operation turntable and the two bent limit parts of the limit spring sheet adopt limit matching, and during the conversion, the conversion interlock of the automatic conversion mechanism can be realized, which is conducive to improving the reliable conversion of the two power supplies of the dual power automatic conversion switch, and can avoid the parallel operation of the two (common and standby) power supplies, so that the conversion reliability is better and the safety is higher. Therefore, the dual power automatic conversion switch has the advantages of simple structure, stable and reliable performance, rapid and reliable conversion, and high breaking capacity.

[0006] In particular, the bending limit portion has a guiding inclined surface matched with the driving arm, one side of the driving arm has a guiding arc surface matched with the conductive inclined surface, the guiding arc surface moves with the driving arm and slides on the guiding inclined surface, the bending limit portion has a limiting plane transitionally connected with the guiding inclined surface, the other side of the driving arm has a locking plane matched with the limiting plane, the locking plane abuts against the limiting plane, and a limiting match between the locking plane and the limiting plane is formed. During operation, the manual operating turntable drives the driving arm to move, the guiding arc surface of the driving arm slides along the guiding inclined surface, the manual operating turntable compresses the torsion spring, and the torsion spring begins to store energy. When the locking plane of the driving arm abuts against the limiting plane of the bending limit portion, the torsion spring releases energy, and the manual operating turntable drives the driving disk to quickly perform the switching action through the torsion spring, which is conducive to improving the switching speed of the automatic switching switch.

[0007] In particular, the torsion spring is sleeved on the rotating shaft, the driving disk has a limit arm matched with the torsion spring, the two torsion arms of the torsion spring respectively abut on the two sides of the limit arm, the manually operated turntable has a toggle arm between the two corresponding toggle arms, the toggle arm moves with the manually operated turntable and toggle the torsion arm. The two torsion arms of the torsion spring respectively abut on the limit arm of the driving disk and the toggle arm of the manually operated turntable, thereby facilitating the assembly of the torsion spring with the driving disk and the manually operated turntable, making the assembly more convenient, and ensuring that the transmission between the manually operated turntable and the driving disk is more reliable.

[0008] In particular, a mechanism cover covering the conversion assembly is arranged in the shell, one end of the rotating shaft passes through the positioning hole of the mechanism cover and has a clamping groove exposed outside the mechanism cover, the output shaft of the motor is clamped in the clamping groove, and a linkage fit is formed between the rotating shaft and the output shaft.

[0009] In particular, the manual operation turntable has a manual operation arm exposed outside the mechanism cover, and the housing is provided with a manual operation hole corresponding to the manual operation arm. The mechanism cover can position the main shaft, ensure that the shaft can rotate reliably, and is conducive to improving the working reliability of the dual power automatic transfer switch.

[0010] In particular, the driving disk has two fixed arms, and the two fixed arms are respectively provided with rivet pins connected to the limiting spring sheet. The two fixed arms of the driving disk are connected to the limiting spring sheet through rivets, so as to facilitate the assembly of the driving disk and the limiting spring sheet, and ensure that the connection between the driving disk and the limiting spring sheet is more firm.

[0011] In particular, the other end of the rotating shaft has a rotating shaft portion, and one end of the conversion shaft is provided with a positioning groove, and the rotating shaft portion is rotatably arranged in the positioning groove, and constitutes a rotational connection and cooperation between the rotating shaft portion and the conversion shaft. The rotating shaft is rotatably arranged in the positioning groove of the conversion shaft through the rotating shaft portion, thereby ensuring that the rotating shaft can rotate reliably, which is conducive to improving the working reliability of the automatic conversion mechanism.

[0012] In particular, a clamping part that matches the manual operation turntable is provided on one end of the rotating shaft, and a clamping hole is provided on the manual operation turntable. The clamping part is clamped in the clamping hole, and the clamping part and the manual operation turntable are clamped together. The manual operation turntable and the rotating shaft are assembled by clamping, so that the assembly of the manual operation turntable and the rotating shaft is convenient and the assembly is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a stereogram of an embodiment of the utility model.

[0014] Figure 2 This is an exploded view of an embodiment of the utility model.

[0015] Figure 3 It is a three-dimensional diagram of the conversion assembly according to an embodiment of the utility model.

[0016] Figure 4 This is a three-dimensional diagram of a manually operated turntable according to an embodiment of the utility model. DETAILED DESCRIPTION

[0017] like Figures 1 to 4As shown, the embodiment of the utility model is an automatic conversion mechanism of a dual power automatic conversion switch, including a housing 10, a motor 11, and a conversion assembly 20 arranged in linkage with the motor 11, wherein the conversion assembly 20 includes a conversion shaft 21 rotatably arranged on the housing 10 and used to drive the contact system to perform a two-way power switching action, a drive disk 22 linked to the conversion shaft 21, a limit spring 23 linked to the drive disk 22, a rotating shaft 24 rotatably arranged on the conversion shaft 21 and linked to the motor 11, and a linkage A manually operated turntable 25 is movably arranged on the rotating shaft 24, and a torsion spring 26 is arranged between the manually operated turntable 25 and the driving disk 22. The manually operated turntable 25 has two driving arms 251 that cooperate with the limiting spring sheet 23. Both ends of the limiting spring sheet 23 have two bending limiting portions 231 that cooperate with the two driving arms 251. The driving arms 251 move with the manually operated shaft disk 25 and abut against the bending limiting portions 231, and constitute a limiting cooperation between the driving arms 251 and the bending limiting portions 231. The bending limit portion 231 has a guide slope 2311 that cooperates with the driving arm 251, and one side of the driving arm 251 has a guide arc surface 2511 that cooperates with the conductive slope 2311. The guide arc surface 2511 moves with the driving arm 251 and slides on the guide slope 2311. The bending limit portion 231 has a limiting plane 2312 that is transitionally connected to the guiding slope 2311, and the other side of the driving arm 251 has a locking plane 2512 that cooperates with the limiting plane 2312. The locking plane 2512 abuts against the limiting plane 2312, and constitutes a limiting cooperation between the locking plane 2512 and the limiting plane 2312. During operation, the manual operation turntable drives the driving arm to move, the guide arc surface of the driving arm slides along the guide inclined surface, the manual operation turntable compresses the torsion spring, and the torsion spring begins to store energy. When the locking plane of the driving arm contacts the limiting plane of the bending limiting part, the torsion spring releases energy, and the manual operation turntable drives the driving disk to quickly perform the switching action through the torsion spring, which is beneficial to improve the switching speed of the automatic switching switch. The torsion spring 26 is sleeved on the rotating shaft 24, and the driving disk 22 has a limiting arm 221 that matches the torsion spring 26. The two torsion arms 261 of the torsion spring 26 contact the two sides of the limiting arm 221 respectively. The manual operation turntable 25 has a toggle arm 252 between the two corresponding torsion arms 261. The toggle arm 252 moves with the manual operation turntable 25 and toggle the torsion arm 261 to move. The two torsion arms of the torsion spring respectively contact the limit arm of the driving disk and the toggle arm of the manual operating turntable, thereby facilitating the assembly of the torsion spring, the driving disk and the manual operating turntable, making the assembly more convenient and ensuring that the transmission between the manual operating turntable and the driving disk is more reliable.

[0018] like Figure 2 , 4As shown, the housing 10 is provided with a mechanism cover 27 covering the conversion assembly 20, one end of the rotating shaft 24 passes through the positioning hole 271 of the mechanism cover 27 and has a clamping groove 241 exposed outside the mechanism cover 27, the output shaft 111 of the motor 11 is clamped in the clamping groove 241, and forms a linkage cooperation between the rotating shaft 24 and the output shaft 222. The manual operation turntable 25 is provided with a manual operation arm 253 exposed outside the mechanism cover 27, and the housing 10 is provided with a manual operation hole 101 corresponding to the manual operation arm 253. The mechanism cover can play a positioning role on the main shaft, which can ensure that the rotating shaft can rotate reliably, which is conducive to improving the working reliability of the dual power automatic conversion switch. The driving disk 22 is provided with two fixed arms 222, and the two fixed arms 222 are respectively provided with rivet pins 28 connected with the limit spring sheet 23. The two fixed arms of the driving disk are connected to the limiting spring sheet through rivets, so as to facilitate the assembly of the driving disk and the limiting spring sheet, and ensure that the connection between the driving disk and the limiting spring sheet is more firm. The other end of the rotating shaft 24 has a rotating shaft portion 242, and a positioning groove 211 is provided on one end of the conversion shaft 21. The rotating shaft portion 242 is rotatably arranged in the positioning groove 211, and constitutes a rotating connection and cooperation between the rotating shaft portion 242 and the conversion shaft 21. The rotating shaft is rotatably arranged in the positioning groove of the conversion shaft through the rotating shaft portion, so as to ensure that the rotating shaft can rotate reliably, which is conducive to improving the working reliability of the automatic conversion mechanism. A clamping portion 243 is provided on one end of the rotating shaft 24 to cooperate with the manual operation rotating disk 25, and a clamping hole 254 is provided on the manual operation rotating disk 25. The clamping portion 243 is clamped in the clamping hole 254, and constitutes a clamping and cooperation between the clamping portion 243 and the manual operation rotating disk 25. The manual operation turntable and the rotating shaft are assembled by a snap-fitting manner, thereby facilitating the assembly of the manual operation turntable and the rotating shaft and making the assembly more convenient.

[0019] The automatic conversion mechanism adopts an energy storage structure design. The manual operation turntable drives the driving turntable to rotate rapidly through the torsion spring, and the driving turntable drives the conversion shaft to perform rapid conversion, thereby effectively improving the conversion speed of the automatic conversion mechanism. The two driving arms of the manual operation turntable and the two bent limit parts of the limit spring adopt limit matching. During the conversion, the conversion interlock of the automatic conversion mechanism can be realized, which is conducive to improving the reliable conversion of the two power supplies of the dual power automatic conversion switch, and can avoid the parallel operation of the two (common and standby) power supplies, so that the conversion reliability is better and the safety is higher. Therefore, the dual power automatic conversion switch has the advantages of simple structure, stable and reliable performance, rapid and reliable conversion, and high breaking capacity.

Claims

1. An automatic switching mechanism for a dual power automatic switching switch, characterized in that: The invention comprises a shell, a motor, and a conversion component which is linked with the motor, wherein the conversion component comprises a conversion shaft which is rotatably arranged on the shell and is used to drive a contact system to perform a two-way power switching action, a driving disk which is linked with the conversion shaft, a limiting spring piece which is linked with the driving disk, a rotating shaft which is rotatably arranged on the conversion shaft and is linked with the motor, a manual operating turntable which is linked with the rotating shaft, and a torsion spring which is arranged between the manual operating turntable and the driving disk, the manual operating turntable is provided with two driving arms which are matched with the limiting spring pieces, and two ends of the limiting spring piece are provided with two bending limiting parts which are matched with the two driving arms, the driving arm moves with the manual operating shaft disk and abuts against the bending limiting parts, and constitutes a limiting cooperation between the driving arm and the bending limiting parts.

2. The automatic switching mechanism of the dual power automatic switching switch according to claim 1 is characterized in that: The bending limit part has a guiding inclined surface that matches with the driving arm, and one side of the driving arm has a guiding arc surface that matches with the conductive inclined surface. The guiding arc surface moves with the driving arm and slides on the guiding inclined surface. The bending limit part has a limiting plane that is transitionally connected with the guiding inclined surface, and the other side of the driving arm has a locking plane that matches with the limiting plane. The locking plane is in contact with the limiting plane, and constitutes a limiting match between the locking plane and the limiting plane.

3. The automatic switching mechanism of the dual power automatic switching switch according to claim 1 or 2, characterized in that: The torsion spring is sleeved on the rotating shaft, the driving disk is provided with a limiting arm matched with the torsion spring, the two torsion arms of the torsion spring are respectively in contact with the two sides of the limiting arm, and the manually operated turntable is provided with a toggle arm between the two corresponding torsion arms, and the toggle arm moves with the manually operated turntable and toggle the torsion arm.

4. The automatic switching mechanism of the dual power automatic switching switch according to claim 1 or 2, characterized in that: A mechanism cover covering the conversion assembly is arranged in the shell, one end of the rotating shaft passes through the positioning hole of the mechanism cover and has a clamping groove exposed outside the mechanism cover, the output shaft of the motor is clamped in the clamping groove, and the rotating shaft and the output shaft are linked.

5. The automatic switching mechanism of the dual power automatic switching switch according to claim 4 is characterized in that: The manual operation turntable is provided with a manual operation arm exposed outside the mechanism cover, and the shell body is provided with a manual operation hole corresponding to the manual operation arm.

6. The automatic switching mechanism of the dual power automatic switching switch according to claim 1 or 2, characterized in that: The driving disc is provided with two fixing arms, and the two fixing arms are respectively provided with riveted pins connected with the limiting spring sheets.

7. The automatic switching mechanism of the dual power automatic switching switch according to claim 1 or 2, characterized in that: The other end of the rotating shaft has a rotating shaft part, and one end of the conversion shaft is provided with a positioning groove. The rotating shaft part is rotatably arranged in the positioning groove, and constitutes a rotating connection cooperation between the rotating shaft part and the conversion shaft.

8. The automatic switching mechanism of the dual power automatic switching switch according to claim 1 or 2, characterized in that: A clamping part matched with the manual operating turntable is arranged on one end of the rotating shaft, a clamping hole is arranged on the manual operating turntable, the clamping part is clamped in the clamping hole, and the clamping part and the manual operating turntable are clamped together.

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