Bidirectional holding module for double power transfer switch and double power transfer switch

Abstract

Embodiments of the present disclosure provide a bidirectional holding module for a double power transfer switch and the double power transfer switch. The bidirectional holding module comprises a driving member, a pair of tripping members, a resetting member and an electromagnet. The driving member is adapted to switch between a closing preparation position and an opening preparation position. The pair of tripping members are each adapted to switch between a blocking position and an avoiding position. In the blocking position, the corresponding tripping member of the pair of tripping members abuts the driving member. In the avoiding position, the corresponding tripping member of the pair of tripping members is disengaged from the driving member. The resetting member is adapted to reset the pair of tripping members from the avoiding position to the blocking position and comprises a first spiral portion and a second spiral portion connected to each other, the first spiral portion and the second spiral portion are arranged around the corresponding tripping member respectively. The electromagnet comprises a push rod, the pair of tripping members are located on the moving path of the push rod and are adapted to switch from the blocking position to the avoiding position under the pushing of the push rod.

Description

Technical Field

[0001] The embodiments of this disclosure generally relate to the field of electrical equipment technology, and more specifically, to a bidirectional holding module for a dual power transfer switch and a dual power transfer switch. Background Technology

[0002] A dual power transfer switch is an electrical device used for automatic or manual switching between two different power sources, primarily in applications requiring high power supply reliability. It can detect parameters such as voltage and frequency of both power sources, and quickly switch the load to the other normal power source when one power source fails or experiences a power outage. Dual power transfer switches ensure continuous power supply to the load, effectively preventing equipment downtime and production interruptions caused by power outages. Utility Model Content

[0003] In a first aspect of this disclosure, a bidirectional holding module for a dual-power transfer switch is provided, the bidirectional holding module comprising: a drive member adapted to switch between a closing preparation position and a opening preparation position; a pair of trip members, each adapted to switch between a blocking position and a yielding position, wherein, in the blocking position, a corresponding trip member of the pair of trip members abuts against the drive member to block the drive member in the closing preparation position or the opening preparation position, and in the yielding position, a corresponding trip member of the pair of trip members is offset from the drive member; a reset member adapted to reset the pair of trip members from the yielding position to the blocking position and comprising a first helical portion and a second helical portion connected to each other, the first helical portion and the second helical portion being disposed around a corresponding trip member; and an electromagnet adjacent to the pair of trip members, the electromagnet including a push rod, the pair of trip members being located on the movement path of the push rod and adapted to switch from the blocking position to the yielding position under the push rod.

[0004] According to an embodiment of the bidirectional holding module of this disclosure, the first and second helical portions of the reset member are connected to each other and are respectively arranged around the corresponding tripping member. In this way, the paired reset rods and the two pins fixing each torsion spring are eliminated, reducing the number of parts and solving the problem of structural complexity. Furthermore, since the push rod of the electromagnet is adapted to switch the paired tripping members from the blocking position to the yielding position, the reset member is adapted to drive the push rod of the electromagnet to reset during the process of the reset member resetting the paired tripping members from the yielding position to the blocking position, thereby realizing the reset function of the electromagnet.

[0005] In some embodiments, each of the paired trip members includes a rotating shaft and at least one clearance groove. The first helical portion and the second helical portion are respectively disposed around the rotating shaft of the corresponding trip member, and the at least one clearance groove is disposed on the rotating shaft. When the paired trip members are in the blocking position, the driving member is offset from the at least one clearance groove and abuts against the rotating shaft of the corresponding trip member. When the paired trip members are in the clearance position, the at least one clearance groove is located on the rotation path of the driving member and allows the driving member to pass through.

[0006] In some embodiments, the at least one clearance groove includes a pair of clearance grooves, which are disposed on the rotating shaft along the axial direction of the rotating shaft and spaced apart from each other by a predetermined distance.

[0007] In some embodiments, the drive member includes a rotating portion and a pair of extension portions disposed on the rotating portion along the axial direction and spaced apart from each other by the preset distance.

[0008] In some embodiments, the extension includes a mating groove disposed away from the rotating portion, and the mating groove divides the end of the extension away from the rotating portion into a first portion and a second portion, wherein when the drive member is in the closing preparation position, the first portion abuts against the rotation shaft of one of the paired tripping members, and wherein when the drive member is in the opening preparation position, the second portion abuts against the rotation shaft of the other of the paired tripping members.

[0009] In some embodiments, one end of the first spiral portion is connected to one end of the second spiral portion, the other end of the first spiral portion is connected to one of the pair of tripping members, and the other end of the second spiral portion is connected to the other of the pair of tripping members.

[0010] In some embodiments, each of the paired trip members further includes an abutment portion, the abutment portions of the paired trip members being disposed opposite to each other on the rotating shaft, the other end of the first helical portion abutting against the abutment portion of the corresponding trip member, and the other end of the second helical portion abutting against the abutment portion of the corresponding trip member.

[0011] In some embodiments, each of the paired release members further includes a mating portion, the mating portions of the paired release members being disposed adjacent to each other on the rotating shaft, the mating portions of the paired release members being located on the movement path of the push rod, and being adapted to be pushed by the push rod.

[0012] In some embodiments, each of the paired trip members further includes a protrusion disposed on the side of the rotating shaft adjacent to the electromagnet; and the electromagnet further includes a pair of blocking portions disposed at a distance from each other between the protrusions of the paired trip members, wherein when the paired trip members are in the blocking position, each protrusion of the paired trip members is spaced apart from the corresponding blocking portion, and wherein when the paired trip members are in the avoidance position, each protrusion of the paired trip members abuts against the corresponding blocking portion.

[0013] In a second aspect of this disclosure, a dual power transfer switch is provided, comprising: a bracket; and at least one bidirectional holding module according to any of the first aspects of this disclosure, the at least one bidirectional holding module being coupled to the bracket.

[0014] It should be understood that the content described in this section is not intended to limit the key or essential features of the embodiments of this disclosure, nor is it intended to restrict the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0015] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0016] Figure 1 A schematic diagram of the structure of a bidirectional holding module according to some embodiments of the present disclosure is shown;

[0017] Figure 2 A schematic diagram of the structure of a reset member and a pair of tripping members according to some embodiments of the present disclosure is shown;

[0018] Figure 3 A schematic diagram of the structure of a reset member according to some embodiments of the present disclosure is shown;

[0019] Figure 4 Schematic diagrams of a reset member, an electromagnet, and a pair of tripping members according to some embodiments of the present disclosure are shown;

[0020] Figures 5 to 7 A schematic working process of a bidirectional holding module according to some embodiments of the present disclosure is shown.

[0021] Explanation of reference numerals in the attached figures:

[0022] 100 is a bidirectional holding module;

[0023] 1 is the driving component, 11 is the rotating part, 12 is the extension part, 121 is the mating groove, 122 is the first part, 123 is the second part, and 13 is the connecting part;

[0024] 2 is the release element, 21 is the rotating shaft, 22 is the clearance groove, 23 is the abutment part, 24 is the mating part, and 25 is the protrusion part;

[0025] 3 is the reset component, 31 is the first spiral part, and 32 is the second spiral part;

[0026] 4 is an electromagnet, 41 is a push rod, and 42 is a blocking part;

[0027] 5 represents the pin. Detailed Implementation

[0028] Embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0029] The term "comprising" and its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects.

[0030] As described above, a dual-power transfer switch is an electrical device used for automatic or manual switching between two different power sources. However, the reset and holding mechanism of a conventional dual-power transfer switch includes a drive element, a pair of tripping elements, a pair of reset levers, a pair of torsion springs, and an electromagnet. Furthermore, each torsion spring requires two pins for fixation, resulting in a large number of parts and a complex structure.

[0031] Based on this, embodiments of the present disclosure provide a bidirectional holding module for a dual-power transfer switch and a dual-power transfer switch, to at least partially solve the above-mentioned problems. In the following, [the following will be combined with...] Figures 1 to 7 The principles of this disclosure are described.

[0032] Figure 1 A schematic diagram of the structure of a bidirectional holding module 100 according to some embodiments of the present disclosure is shown. Figure 2 A schematic diagram of the structure of the reset member 3 and the paired tripping member 2 according to some embodiments of the present disclosure is shown. Figure 3A schematic diagram of the structure of the reset member 3 according to some embodiments of the present disclosure is shown. For example... Figures 1 to 3 As shown, the bidirectional holding module 100 described herein includes a drive element 1, a pair of tripping elements 2, a reset element 3, and an electromagnet 4.

[0033] refer to Figure 1 In some embodiments, the drive element 1 is rotatably coupled to the bracket of the dual power transfer switch (not shown). A pin 5 passes through the drive element 1 and is fixed to the bracket. Thus, the drive element 1 can rotate relative to the bracket about the axis of the pin 5. The drive element 1 is coupled to the opening and closing mechanism of the dual power transfer switch (not shown) and is adapted to be driven by the opening and closing mechanism to switch between a closing preparation position and a opening preparation position. The opening and closing mechanism is adapted to switch between an opening position, a dead position, and a closing position, wherein the dead position is between the opening and closing positions. When the opening and closing mechanism is in the dead position, the main spring of the opening and closing mechanism is adapted to be pressed to the maximum distance by the energy storage shaft and is in an unstable state. In this way, the main spring actively releases energy and switches the drive element 1 to the closing preparation position or the opening preparation position without requiring external components to drive the opening and closing mechanism.

[0034] Continue to refer to Figure 1 In some embodiments, the pair of tripping elements 2 are rotatably coupled to the bracket and adapted to switch between a blocking position and a yielding position. In the blocking position, the corresponding tripping element 2 of the pair abuts against the drive element 1 to block the drive element 1 in a closing preparation position or a opening preparation position. In the yielding position, the corresponding tripping element 2 of the pair is offset from the drive element 1. The corresponding tripping element 2 allows the drive element 1 to pass. During the rotation of the drive element 1, the closing / opening mechanism is adapted to switch to the closing position or the opening position.

[0035] Continue to refer to Figures 1 to 3 In some embodiments, the reset member 3 is adapted to reset the pair of trip members 2 from the avoidance position to the blocking position. The reset member 3 includes a first helical portion 31 and a second helical portion 32 connected to each other. The first helical portion 31 and the second helical portion 32 may include torsion springs. The first helical portion 31 and the second helical portion 32 are respectively disposed around the corresponding trip member 2. The electromagnet 4 is adjacent to the pair of trip members 2 and is located on one side of the pair of trip members 2. The electromagnet 4 includes a push rod 41, the pair of trip members 2 are located on the movement path of the push rod 41, and are adapted to rotate under the push of the push rod 41 to switch from the blocking position to the avoidance position.

[0036] According to an embodiment of the present disclosure, in the bidirectional holding module 100, the first helical portion 31 and the second helical portion 32 of the reset member 3 are connected to each other and are respectively arranged around the corresponding release member 2. In this way, the paired reset rods and the two pins fixing each torsion spring are eliminated, the number of parts is reduced, and the problem of structural complexity is solved.

[0037] Furthermore, since the push rod 41 of the electromagnet 4 is adapted to switch the pair of tripping pieces 2 from the blocking position to the yielding position, during the process of the reset member 3 resetting the pair of tripping pieces 2 from the yielding position to the blocking position, the reset member 3 is adapted to drive the push rod 41 of the electromagnet 4 to reset, thereby realizing the reset function of the electromagnet 4.

[0038] Continue to refer to Figure 2 In some embodiments, each of the paired trip members 2 includes a rotating shaft 21 and at least one clearance groove 22. The rotating shaft 21 is rotatably coupled to the bracket and adapted to rotate about its own axis. A first helical portion 31 and a second helical portion 32 are respectively disposed around the rotating shaft 21 of the respective trip member 2. At least one clearance groove 22 may be provided on the rotating shaft 21 and allow the drive member 1 to pass through. At least one clearance groove 22 may be formed by recessing into the rotating shaft 21 at a predetermined position along the radial direction of the rotating shaft 21, thereby forming at least one notch on the rotating shaft 21.

[0039] When the paired tripping elements 2 are in the blocking position, the drive element 1 is offset from at least one clearance groove 22 and abuts against the rotation shaft 21 of the corresponding tripping element 2. In this way, the drive element 1 is adapted to be blocked by the corresponding tripping element 2 in the paired tripping elements 2 in the closing preparation position or the opening preparation position.

[0040] Furthermore, when the pair of release members 2 are in the avoidance position, at least one avoidance groove 22 is located on the rotation path of the drive member 1 and allows the drive member 1 to pass through.

[0041] Continue to refer to Figure 1 and Figure 2 In some embodiments, at least one clearance groove 22 may include a pair of clearance grooves 22. The pair of clearance grooves 22 are disposed on the rotation shaft 21 along the axial direction X. The pair of clearance grooves 22 may be spaced apart by a predetermined distance. Correspondingly, the drive member 1 includes a rotating part 11 and a pair of extensions 12. A pin 5 is disposed within the rotating part 11. The end of the pin 5 may be connected to a bracket, and the rotating part 11 is adapted to rotate about the axis of the pin 5. The pair of extensions 12 are disposed on the rotating part 11 along the axial direction X. The pair of extensions 12 may be spaced apart by a predetermined distance to align with the pair of clearance grooves 22.

[0042] It is understood that when the paired tripping elements 2 are in the avoidance position, the ends of the paired extensions 12 of the drive member 1 that are away from the rotating part 11 are adapted to pass through the paired avoidance grooves 22. When the paired tripping elements 2 are in the blocking position, the paired extensions 11 of the drive member 1 are adapted to impact the rotating shaft 21 of the corresponding tripping element 2. In this way, with the increase in the mutual contact area, it is beneficial to reduce the impact force of the drive member 1 on the corresponding tripping element 2, thereby avoiding damage to the tripping element 2.

[0043] It should be noted that the numbers, values, and quantities mentioned above, as well as elsewhere in this disclosure, are exemplary and are not intended to limit the scope of this disclosure in any way. Any other suitable numbers, values, and quantities are possible. For example, depending on the specific application scenario and requirements, the clearance slots 22 may include more or fewer in number.

[0044] Continue to refer to Figure 1 Furthermore, the drive member 1 may also include a connecting portion 13. The connecting portion 13 may be disposed on the rotating portion 11 and located between the pair of extensions 12. One end of the connecting portion 13 may be connected to one of the extensions 12, and the other end of the connecting portion 13 may be connected to the other extension 12, so as to form an integral unit with the pair of extensions 12. In this way, it is beneficial to improve the impact resistance of the pair of extensions 12, thereby avoiding damage to the drive member 1.

[0045] Continue to refer to Figure 1 and Figure 2 In some embodiments, the extension 12 may further include a mating groove 121 disposed opposite to the rotating portion 11. The mating groove 121 is adapted to divide the end of the extension 12 opposite to the rotating portion 11 into a first portion 122 and a second portion 123. The first portion 122 and the second portion 123 are adapted to abut against the rotating shaft 21 of the corresponding tripping member 2. Specifically, when the drive member 1 is in the closing preparation position, the first portion 122 abuts against the rotating shaft 21 of one of the paired tripping members 2. When the drive member 1 is in the opening preparation position, the second portion 123 abuts against the rotating shaft 21 of the other tripping member 2 in the paired tripping members 2. The operation of the bidirectional holding module 100 will be described below in conjunction with... Figures 5 to 7 Describe it.

[0046] Figure 4 A schematic diagram of the structure of the reset member 3, the electromagnet 4, and the pair of tripping members 2 according to some embodiments of the present disclosure is shown. Figure 4 The paired release elements 2 shown are in the avoidance position. For example... Figures 2 to 4As shown, in some embodiments, one end of the first helical portion 31 may be connected to one end of the second helical portion 32. The other end of the first helical portion 31 is connected to one of the paired tripping members 2, and the other end of the second helical portion 32 is connected to the other tripping member 2 in the pair. The reset member 3, configured in this way, is adapted to hold the paired tripping members 2 in the blocking position to achieve a holding effect. Furthermore, referring to... Figure 4 When push rod 41 pushes the paired tripping elements 2 from the blocking position to the yielding position, reset element 3 is adapted to deform and store energy, thereby preparing to reset the paired tripping elements 2 to the blocking position. Furthermore, when resetting the paired tripping elements 2, reset element 3 is also adapted to reset push rod 41 of electromagnet 4. In this way, a reset effect can be achieved.

[0047] To ensure that reset component 3 is suitable for achieving both holding and reset effects, refer to Figures 2 to 4 In some embodiments, each of the paired release members 2 may further include an abutment portion 23. The abutment portions 23 of the paired release members 2 are disposed opposite to each other on the rotating shaft 21. The other end of the first helical portion 31 abuts against the abutment portion 23 of the corresponding release member 2. The other end of the second helical portion 32 abuts against the abutment portion 23 of the corresponding release member 2. It should be understood that in other embodiments, the paired release members 2 may adopt any other suitable structure to cooperate with the reset member 3 so that the reset member 3 is adapted to achieve both a holding effect and a reset effect.

[0048] Continue to refer to Figures 2 to 4 In some embodiments, each of the paired trip members 2 may further include a mating portion 24. The mating portions 24 of the paired trip members 2 are disposed adjacent to each other on the rotating shaft 21. The mating portions 24 of the paired trip members 2 may be located on the movement path of the push rod 41 and are adapted to be pushed by the push rod 41. When the paired trip members 2 are in the blocked position, the push rod 41 abuts against the mating portions 24 of the paired trip members 2 under the action of the reset member 3. The paired trip members 2 are adapted to be limited by the push rod 41 and held in the blocked position. Furthermore, referring to... Figure 4 When the paired release members 2 are in the avoidance position, the push rod 41 abuts against the mating part 24 of the paired release members 2. When the push rod 41 extends outward, it is adapted to drive the paired release members 2 to rotate, and the reset member 3 deforms.

[0049] Continue to refer to Figures 2 to 4In some embodiments, each of the paired trip members 2 may further include a protrusion 25. The protrusion 25 may be disposed on the side of the rotating shaft 21 adjacent to the electromagnet 4. Correspondingly, the electromagnet 4 may further include a pair of blocking portions 42. The pair of blocking portions 42 are disposed spaced apart from each other between the protrusions 25 of the paired trip members 2. In this way, when the paired trip members 2 are in the blocking position, each protrusion 25 of the paired trip members 2 is spaced apart from the corresponding blocking portion 42. (Continue referring to...) Figure 4 When the pair of release members 2 are in the avoidance position, the protrusions 25 of the pair of release members 2 abut against the corresponding blocking part 42 to restrict the rotation of the pair of release members 2, thereby keeping the pair of release members 2 in the avoidance position.

[0050] Figures 5 to 7 A schematic operation of a bidirectional holding module 100 according to some embodiments of the present disclosure is shown. In the following, it will be combined with... Figures 5 to 7 Describe the working process of the bidirectional holding module 100.

[0051] like Figure 5 As shown, under the action of the reset member 3, the paired trip members 2 are reset to the blocking position. At this time, the first part 122 of the drive member 1 and one of the trip members 2 ( Figure 5 The rotating shaft 21 of the upper middle tripping member 2) abuts against the drive member 1. The drive member 1 is restricted from rotating and is in one of the closing preparation position or the opening preparation position. In addition, the mating part 24 of the pair of tripping members 2 is pressed against the push rod 41 by the reset member 3, so the pair of tripping members 2 is suitable to be limited by the push rod 41 and held in the blocking position. At this time, the push rod 41 retracts and the electromagnet 4 is reset. In addition, the protrusion 25 is spaced apart from the corresponding blocking part 42.

[0052] like Figure 6 As shown, when the pair of electromagnets 4 are energized, their respective coils generate magnetic fields and drive the moving iron core to move. The moving iron core is coupled to push rod 41, which pushes the pair of tripping elements 2 to rotate to a position offset from the driving element 1. That is, the pair of tripping elements 2 rotate to... Figure 6 The avoidance position is shown. In the avoidance position, the first part 122 of the drive member 1 is aligned with the avoidance groove 22, so the paired trip members 2 cannot prevent the drive member 1 from rotating. Since the drive member 1 is coupled to the opening and closing mechanism, the opening and closing mechanism is adapted to rotate to the closing position or the opening position. In addition, as the push rod 41 pushes the paired trip members 2 to rotate, the protrusion 25 moves toward the adjacent corresponding blocking part 42. When the protrusion 25 moves to abut against the corresponding blocking part 42, the protrusion 25 restricts the rotation of the paired trip members 2, thereby holding the paired trip members 2 in the avoidance position. As the push rod 41 extends and pushes the paired trip members 2 to rotate, the reset member 3 deforms and stores energy.

[0053] like Figure 7 As shown, after the pair of electromagnets 4 are de-energized, under the action of the reset member 3, the pair of tripping members 2 are reset to the blocking position. The second part 123 of the driving member 1 and the other tripping member 2 in the pair of tripping members 2 ( Figure 7 The rotating shaft 21 of the lower middle tripping element 2 abuts against it. The drive element 1 is restricted from rotating and is in another position between the closing preparation position and the opening preparation position. In addition, the mating part 24 of the pair of tripping elements 2 is pressed against the push rod 41 by the reset element 3, so the pair of tripping elements 2 is suitable to be limited by the push rod 41 and held in the blocking position. The push rod 41 retracts, and the electromagnet 4 is reset.

[0054] Embodiments of this disclosure also provide a dual power transfer switch, the dual power transfer switch including a bracket; and at least one bidirectional holding module 100 as described above, the at least one bidirectional holding module 100 being coupled to the bracket.

[0055] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A bidirectional holding module (100) for a dual power transfer switch, characterized in that, The bidirectional holding module (100) includes: The drive unit (1) is adapted to switch between the closing preparation position and the opening preparation position; A pair of tripping elements (2), each adapted to switch between a blocking position and a yielding position, wherein when in the blocking position, the corresponding tripping element (2) of the pair of tripping elements (2) abuts against the drive element (1) to block the drive element (1) in the closing preparation position or the opening preparation position, and when in the yielding position, the corresponding tripping element (2) of the pair of tripping elements (2) is offset from the drive element (1); A reset member (3), adapted to reset the paired trip members (2) from the avoidance position to the blocking position and comprising a first helical portion (31) and a second helical portion (32) connected to each other, the first helical portion (31) and the second helical portion (32) respectively disposed around the corresponding trip member (2); and An electromagnet (4) is located adjacent to the pair of release elements (2). The electromagnet (4) includes a push rod (41). The pair of release elements (2) are located on the movement path of the push rod (41) and are adapted to switch from the blocking position to the yielding position under the push of the push rod (41).

2. The bidirectional holding module (100) according to claim 1, characterized in that Each of the paired release members (2) includes a rotating shaft (21) and at least one clearance groove (22). The first helical portion (31) and the second helical portion (32) are respectively arranged around the rotating shaft (21) of the corresponding release member (2), and the at least one clearance groove (22) is arranged on the rotating shaft (21). When the paired release members (2) are in the blocking position, the drive member (1) is offset from the at least one clearance groove (22) and abuts against the rotation shaft (21) of the corresponding release member (2). When the paired release members (2) are in the avoidance position, the at least one avoidance groove (22) is located on the rotation path of the drive member (1) and allows the drive member (1) to pass.

3. The bidirectional holding module (100) according to claim 2, characterized in that The at least one clearance groove (22) includes a pair of clearance grooves (22), which are arranged on the rotation shaft (21) along the axial direction (X) and are spaced apart from each other by a predetermined distance.

4. The bidirectional holding module (100) according to claim 3, characterized in that, The drive member (1) includes a rotating part (11) and a pair of extension parts (12), the pair of extension parts (12) being disposed on the rotating part (11) along the axial direction (X) and spaced apart from each other by the preset distance.

5. The bidirectional holding module (100) according to claim 4, characterized in that The extension (12) includes a mating groove (121) disposed opposite to the rotating part (11), and the mating groove (121) divides the end of the extension (12) opposite to the rotating part (11) into a first part (122) and a second part (123). When the drive unit (1) is in the closing preparation position, the first part (122) abuts against the rotation shaft (21) of one of the pair of tripping units (2). When the drive member (1) is in the tripping preparation position, the second part (123) abuts against the rotation shaft (21) of the other trip member (2) in the pair of trip members (2).

6. The bidirectional holding module (100) according to claim 2, characterized in that One end of the first spiral part (31) is connected to one end of the second spiral part (32), the other end of the first spiral part (31) is connected to one of the release members (2) in the pair of release members (2), and the other end of the second spiral part (32) is connected to the other release member (2) in the pair of release members (2).

7. The bidirectional holding module (100) according to claim 6, characterized in that Each of the paired release members (2) further includes an abutment portion (23), the abutment portions (23) of the paired release members (2) are disposed opposite to each other on the rotating shaft (21), the other end of the first spiral portion (31) abuts against the abutment portion (23) of the corresponding release member (2), and the other end of the second spiral portion (32) abuts against the abutment portion (23) of the corresponding release member (2).

8. The bidirectional holding module (100) according to claim 2, characterized in that Each of the paired release members (2) further includes a mating part (24), the mating parts (24) of the paired release members (2) are arranged adjacent to each other on the rotating shaft (21), the mating parts (24) of the paired release members (2) are located on the moving path of the push rod (41) and are adapted to be pushed by the push rod (41).

9. The bidirectional holding module (100) according to claim 2, characterized in that, Each of the paired tripping elements (2) further includes a protrusion (25) disposed on the side of the rotating shaft (21) adjacent to the electromagnet (4); and The electromagnet (4) further includes a pair of blocking parts (42), which are spaced apart from each other between the protrusions (25) of the pair of tripping members (2). When the paired release members (2) are in the blocking position, the protrusions (25) of the paired release members (2) are spaced apart from the corresponding blocking portions (42). When the pair of release members (2) are in the avoidance position, the protrusions (25) of the pair of release members (2) abut against the corresponding blocking part (42).

10. A dual power transfer switch, characterized by The dual power supply transfer switch includes: stents; and At least one bidirectional holding module (100) according to any one of claims 1-9 is coupled to the bracket.

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