Multi-station operating mechanism and change-over switch thereof

Abstract

The utility model discloses a multi-station operating mechanism and a change-over switch thereof, the multi-station operating mechanism comprises a driving rod, a left elastic piece and a right elastic piece which are arranged on a mechanism seat, the driving rod is provided with two connecting parts which are symmetrically arranged about the axis of the driving rod, and the right elastic piece and the left elastic piece are provided with a first connecting end and a second connecting end which are rotatably arranged on the mechanism seat; the first movable end and the second movable end are respectively connected with the two connecting parts; according to the fact that a connecting line between the first connecting end and the second connecting end is a critical inflection point line of the two torsional springs, the driving rod drives at least one of the first movable end and the second movable end to cross the critical inflection point line when switching rotation among the common position, the standby position and the double-division position. The two torsion springs are used for applying elastic acting force which is kept at a common position or a standby position or a double-branch position to the driving rod, and the operating mechanism is used for achieving three-station switching and keeping and is simple in structure and low in cost, and safety, reliability and compliance in the power supply switching process are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a multi-station operating mechanism and a conversion switch thereof. Background Art

[0002] The dual power transfer switch is mainly used in emergency power supply systems. It is a switch that automatically switches the load circuit from one power source to another (backup) power source to ensure continuous and reliable operation of important loads. The existing dual power transfer switch usually has a common position (connecting the common power source) and a backup position (connecting the backup power source). By operating the moving contact to contact with the common contact and the backup static contact, respectively, reliable switching between the two positions of the common power supply closing and the backup power supply closing can be achieved. However, according to different application scenarios, for safety reasons, it is now required to lock the transfer switch in the middle position between the common position and the backup position, that is, the dual power transfer switch is required to have three positions: the common position, the disconnect position (double split position), and the backup position. When the dual power transfer switch is in the double split position, safety measures such as padlocks can be implemented to ensure the personal safety of maintenance personnel. However, at present, a three-position dual power transfer switch often requires a complex mechanism to achieve switching between the three positions. Three or more active power components are required to trigger the switching and holding actions between different positions. The operation logic is thus complicated and cumbersome, and the cost is high. Therefore, the technical personnel in this field urgently need to design an operating mechanism with a simple and stable structure to realize reliable switching and maintenance of the dual power conversion switch between different positions, so that the operation switching is reliable and in place and the cost is reduced. Utility Model Content

[0003] Therefore, the purpose of the utility model is to overcome the deficiencies in the prior art, thereby providing a multi-position operating mechanism and a switching switch thereof which have a simple structure, reliable operation switching, and can realize reliable switching and maintenance of the switching switch between three positions.

[0004] In order to achieve the above object, the utility model provides a multi-station operating mechanism, comprising:

[0005] Mechanism seat, installed on one side of the transfer switch;

[0006] A driving rod is rotatably disposed on the mechanism seat and extends to connect the contact mechanism of the transfer switch. The driving rod has a normal position for driving the transfer switch to connect the normal power supply and a standby position for connecting the standby power supply, and a dual position for driving the transfer switch to disconnect the normal power supply and the standby power supply at the same time. The driving rod has two connecting parts symmetrically arranged about its axis.

[0007] The elastic component comprises a left elastic member and a right elastic member which are rotatably arranged on the mechanism seat and are respectively arranged on both sides of the driving rod, wherein the right elastic member has a first connecting end rotatably arranged on the mechanism seat and a first movable end connected to one of the connecting parts; the left elastic member has a second connecting end rotatably arranged on the mechanism seat and a second movable end connected to the other connecting part;

[0008] The connecting line between the first connecting end and the second connecting end is the critical inflection point line of the left elastic member and the right elastic member, and the axis center of the driving rod is arranged at the lower side of the critical inflection point line. When the driving rod switches and rotates between the normal position, the standby position and the double-split position, it drives at least one of the first movable end and the second movable end to cross the critical inflection point line, thereby applying an elastic force to the driving rod through the left and right elastic members to keep it in the normal position, the standby position or the double-split position.

[0009] In the above-mentioned multi-station operating mechanism, when the driving rod moves to the double-split position, the first movable end and the second movable end respectively cross to the lower side of the critical inflection point line, so that the left and right elastic members apply elastic forces of opposite directions and equal magnitude to the driving rod.

[0010] In the above-mentioned multi-station operating mechanism, when the driving rod moves to the normal position, the first movable end passes to the lower side of the critical inflection point line, and the second movable end is driven by the driving rod to be on the upper side of the critical inflection point line, so that the driving rod is subjected to the unidirectional combined force of the left and right elastic members to rotate forward and remain in the normal position;

[0011] When the driving rod moves to the back-use position, the second movable end passes to the lower side of the critical inflection point line, and the driving rod drives the first movable end to be on the upper side of the critical inflection point line, so that the driving rod is subjected to the unidirectional combined force of the left and right elastic members to rotate in the opposite direction and remain in the standby position.

[0012] The above-mentioned multi-station operating mechanism also includes a power structure arranged on the mechanism seat for driving the driving rod, the mechanism seat includes a mechanism panel provided with a left elastic member and a right elastic member and a limiting hole opened on the mechanism panel, and one end of the driving rod passing through the limiting hole is provided with two connecting parts extending horizontally back to back or at an angle, and the mechanism panel is provided with two limiting blocks respectively cooperating with the two connecting parts, and the mechanism panel is provided with two first connecting holes for connecting the first connecting end and the second connecting end, and the two connecting parts are respectively provided with two second connecting holes for connecting the first movable end and the second movable end.

[0013] In the above-mentioned multi-station operating mechanism, the two connecting parts are two connecting protrusions integrally formed on the side wall of one end of the driving rod; or,

[0014] A driving gear is linked to one end of the driving rod, and the two connecting parts are two connecting protrusions arranged on the driving gear.

[0015] In the above-mentioned multi-station operating mechanism, the power structure includes two electromagnet structures relatively arranged on the mechanism seat, the two electromagnet structures have two push rods that perform linear reciprocating motion, and a guide sleeve is linked between the two push rods, and a guide hole is provided on the guide sleeve. The movement direction of the two push rods is perpendicular to the axial direction of the driving rod, and the driving rod is provided with a push rod extending along its radial direction and penetrating into the guide hole.

[0016] The utility model provides another form of multi-station operating mechanism, comprising:

[0017] Mechanism seat, installed on one side of the transfer switch;

[0018] A driving rod is rotatably disposed on the mechanism seat and extends to connect the contact mechanism of the transfer switch. The driving rod has a normal position for driving the transfer switch to connect the normal power supply and a standby position for connecting the standby power supply, and a dual position for driving the transfer switch to disconnect the normal power supply and the standby power supply at the same time. The driving rod has two connecting parts symmetrically arranged about its axis.

[0019] The locking assembly includes two adjusting slots which are arranged on the mechanism seat and on both sides of the driving rod, and a left elastic member and a right elastic member which are respectively connected to the two adjusting slots and the driving rod, wherein the left elastic member has a first connecting end which is slidably connected to one of the adjusting slots, and a first movable end which is connected to one of the connecting parts; the right elastic member has a second connecting end which is slidably connected to the other adjusting slot, and a second movable end which is connected to the other connecting part; when the driving rod switches and rotates between the normal position, the standby position and the double position, the first connecting end and the second connecting end are driven to move the adjustment positions in the two adjusting slots respectively, and an elastic force is applied to the driving rod to keep it in the first position, the second position or the third position through the left and right elastic members.

[0020] The above-mentioned multi-station operating mechanism also includes a power structure arranged on the mechanism seat for driving the driving rod, the mechanism seat includes a mechanism panel provided with a left elastic member and a right elastic member and a limiting hole opened on the mechanism panel, and one end of the driving rod passing through the limiting hole is provided with two connecting parts extending horizontally in reverse or at an angle, the two adjustment slide grooves are inclined slide groove structures and are symmetrically arranged on the mechanism panel, and the two connecting parts are provided with two second connecting holes for connecting the first movable end and the second movable end.

[0021] The utility model also provides a conversion switch, comprising a switch body, a contact mechanism and any one of the above-mentioned multi-position operating mechanisms, wherein the contact mechanism comprises a common static contact, a spare contact and a moving contact assembly arranged on the switch body, the moving contact assembly comprises a contact conversion shaft rotatably arranged on the switch body and a moving contact arranged on the contact conversion shaft, the contact conversion shaft is connected to a driving rod through a gear structure,

[0022] In the above-mentioned conversion switch, the switch body is connected to the mechanism seat to form an installation space suitable for accommodating left and right elastic members and a gear structure. One end of the driving rod extends into the installation space. The mechanism seat or the switch body is provided with two signal switches respectively located on the movement paths of the two connecting parts. When the driving rod reaches the normal position, it drives one of the connecting parts to trigger one of the signal switches to turn on; when the driving rod reaches the standby position, it drives the other connecting part to trigger the other signal switch to turn on; when the driving rod reaches the double-split position, it drives the two connecting parts away from the two signal switches respectively.

[0023] Compared with the prior art, the technical solution of the utility model has the following advantages:

[0024] 1. In the multi-station operating mechanism provided by the utility model, the elastic component is composed of a left elastic member and a right elastic member rotatably arranged on the mechanism seat. When the first movable end of the left elastic member and / or the second movable end of the right elastic member reach the critical inflection point line, the degree of compression deformation is the largest, and the torsional moment is large enough. Therefore, after the force passes through the critical inflection point line, the original balance is broken, and the torsional moment is released, which triggers the torsion spring to obtain a rotation trend and transmits the force and motion to the driving rod, especially when the driving rod moves to the double-split position, the first movable end and the second movable end are driven to cross the critical inflection point line, so that the left and right elastic members exert opposite and equal forces on the driving rod. The same size of elastic force is used to keep the driving rod in a force balance state in the double-split position. By reasonably designing the movement position change between the two torsion springs and the driving rod, the two torsion springs are used to apply an elastic force to the driving rod to keep it in the common position, the standby position or the double-split position, thereby realizing the three-position switching function of the conversion switch. This operating mechanism is used to realize the three-position switching and maintaining structure with simple cost and reliable operation switching. The core role of the three-position design is to ensure the safety, reliability and compliance of the dual power conversion switch during switching, thereby ensuring the continuity of the power supply system and the safety of the operator, and improving the product performance.

[0025] 2. In the multi-station operating mechanism provided by the utility model, as another embodiment of the spring assembly, the first connecting end of the left elastic member and the second connecting end of the right elastic member are respectively slidably connected to the two adjusting grooves of the mechanism seat, and the first movable end and the second movable end are respectively connected to the two connecting parts of the driving rod, especially when the driving rod moves to the double-split position, the first connecting end and the second connecting end will be driven to move and rest against the lower ends of the two adjusting grooves, so that a balanced state in which the relative positions are kept static is formed between the two torsion springs and the driving rod, that is, the elastic force is applied to the driving rod to maintain the double-split position through the left and right elastic members, thereby realizing the three-station switching function of the operating mechanism. This operating mechanism for realizing three-station switching and maintaining has a simple structure, low cost, and reliable operation switching. The core function of the three-station design is to ensure the safety, reliability and compliance of the dual power conversion switch during switching, thereby ensuring the continuity of the power supply system and the safety of the operator, and improving the product performance.

[0026] 3. In the conversion switch provided by the utility model, two signal switches located on the movement paths of the two connecting parts are arranged on the switch body or the mechanism seat. When the driving rod reaches the normal position, it drives one of the connecting parts to trigger one of the signal switches to open, which is used to detect that the dual power conversion switch is in the normal power closing state; and when the driving rod reaches the standby position, it drives the other connecting part to trigger the other signal switch to open, which is used to detect that the dual power conversion switch is in the standby power closing state; in addition, when the driving rod reaches the double-open position, it drives the two connecting parts away from the two signal switches respectively, that is, it is detected that the dual power conversion switch is in the double-open state. This structural setting can realize the working state detection function of the conversion switch through the cooperation of the two signal switches and the two connecting parts, so that the user can clearly know the working state of the switch and the operation is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for use in the specific implementation or the description of the prior art will be briefly introduced below.

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the multi-station operating mechanism of the present embodiment 1;

[0029] Figure 2 This is a schematic diagram of the structure of the multi-station operating mechanism of Example 1 in a commonly used position;

[0030] Figure 3 This is a schematic structural diagram of the multi-station operating mechanism of Embodiment 1 in the standby position;

[0031] Figure 4This is a schematic diagram of the structure of the multi-station operating mechanism of Embodiment 1 in the double split position;

[0032] Figure 5 This is a schematic diagram of another alternative structure of the multi-station operating mechanism of the first embodiment;

[0033] Figure 6 This is a schematic diagram of the structure of the multi-station operating mechanism of Example 2 in a commonly used position;

[0034] Figure 7 This is a schematic diagram of the structure of the multi-station operating mechanism in the second embodiment in the standby position;

[0035] Figure 8 This is a schematic diagram of the structure of the multi-station operating mechanism of Embodiment 2 in the double split position;

[0036] Fig. 9 A schematic diagram of the structure of the conversion switch provided by the utility model;

[0037] Fig.10 It is a schematic cross-sectional structure diagram of the conversion switch of the utility model.

[0038] Explanation of the accompanying drawings: 1. Mechanism seat; 10. Installation space; 11. Mechanism panel; 12. Limit block; 2. Drive rod; 21. Connecting part; 22. Guide push rod; 3. Right elastic member; 31. First connecting end; 32. First movable end; 4. Left elastic member; 41. Second connecting end; 42. Second movable end; 5. Adjusting slide groove; 6. Power structure; 61. Electromagnet structure; 62. Push rod; 63. Guide sleeve; 7. Gear structure; 8. Switch; 9. Contact mechanism; 91. Contact conversion shaft. DETAILED DESCRIPTION

[0039] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] In the description of the present invention, it should be noted that the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0043] Example 1

[0044] The present embodiment is described in detail below with reference to the accompanying drawings:

[0045] This embodiment provides Figure 1-Figure 5 A multi-station operating mechanism is shown, comprising:

[0046] The mechanism seat 1 is installed on one side of the transfer switch 8;

[0047] A driving rod 2 is rotatably disposed on the mechanism seat 1 and is extended to connect the contact mechanism 9 of the conversion switch 8. The driving rod 2 has a normal position for driving the conversion switch 8 to connect to the normal power supply and a standby position for connecting to the standby power supply, and a dual position for driving the conversion switch 8 to disconnect the normal power supply and the standby power supply at the same time. The driving rod 2 has two connecting parts 21 symmetrically arranged about its axis.

[0048] The elastic component includes a left elastic member 4 and a right elastic member 3 which are rotatably arranged on the mechanism seat 1 and are respectively arranged on both sides of the driving rod 2, the right elastic member 3 having a first connecting end 31 rotatably arranged on the mechanism seat 1 and a first movable end 32 connected to one of the connecting parts 21 thereof; the left elastic member 4 has a second connecting end rotatably arranged on the mechanism seat 1 and a second movable end 42 connected to the other connecting part 21; the line between the first connecting end 31 and the second connecting end is the critical inflection point line of the left elastic member 4 and the right elastic member 3, the axis of the driving rod is arranged at the lower side of the critical inflection point line, and when the driving rod 2 switches and rotates between the normal position, the standby position and the double-split position, at least one of the first movable end 32 and the second movable end 42 is driven to cross the critical inflection point line, thereby applying an elastic force to the driving rod 2 to keep it in the normal position, the standby position or the double-split position through the left and right elastic members. Specifically, the left elastic member 4 and the right elastic member 4 are two torsion spring members respectively. It should be noted that the critical inflection point line here refers to the critical deformation reached by the torsion spring through a critical point (dead point) during the force process, that is, the two ends of the torsion spring under pressure are closest to the compression, and the torsional torque obtained is large enough. Therefore, when the torsion spring is subjected to force exceeding the critical point, the torsional torque is used to make it rotate.

[0049] The specific action process of the driving rod 2 is as follows:

[0050] refer to Figure 4 When the driving rod 2 moves to the double-split position, the first movable end 32 and the second movable end 42 are driven to cross the critical inflection point line and are located below the critical inflection point line, so that the left elastic member 4 and the right elastic member 3 are respectively squeezed and symmetrically distributed on both sides of the driving rod, and elastic forces of opposite directions and equal magnitude are applied to the driving rod 2 through the two connecting parts 21, so that the driving rod is locked and maintained in the double-split position. At this time, the operating mechanism drives the dual power conversion switch to disconnect the normal power supply and the backup power supply at the same time.

[0051] refer to Figure 2 When the driving rod 2 moves to the normal position, it drives the first movable end 32 of the right elastic member 3 to cross the critical inflection point line and to be below the critical inflection point line, and drives the second movable end 42 of the left elastic member 4 to be above the critical inflection point line (see FIG. Figure 2 A represents the critical inflection point line), the left and right elastic members apply an elastic force to the drive rod 2 for positive rotation, so that the drive rod 2 is kept in the normal position under the unidirectional combined force of the left and right elastic members. At this time, the operating mechanism drives the dual power conversion switch 8 to connect the normal power supply.

[0052] refer to Figure 3When the driving rod 2 moves to the standby position, it drives the second movable end 42 of the left elastic member 4 to cross the critical inflection point line and is located below the critical inflection point line, and drives the first movable end 32 of the right elastic member 3 to be located above the critical inflection point line. The left and right elastic members exert an elastic force on the driving rod 2 to make a reverse rotation trend, so that the driving rod 2 is kept in the standby position under the unidirectional combined force of the left and right elastic members. At this time, the operating mechanism drives the dual power supply conversion switch to connect the standby power supply; the forward rotation and reverse rotation of the driving rod in this article refer to the opposite directions of the two rotations, which do not represent its actual rotation direction.

[0053] The above implementation is the core technical solution of this embodiment. According to the elastic component composed of the left elastic member 4 and the right elastic member 3 rotatably arranged on the mechanism seat 1, when the first movable end 32 of the left elastic member 4 and / or the second movable end of the right elastic member 3 reach the critical inflection point line, the degree of compression deformation is the largest, and the torsional moment is large enough. Therefore, after the force passes through the critical inflection point line, the original balance is broken, and the torsional moment is released, which triggers the torsion spring to obtain a rotation trend and transmits the force and motion to the driving rod, especially when the driving rod 2 moves to the double-split position, the first movable end 32 and the second movable end 42 are driven to cross the critical inflection point line, so that the left and right elastic members exert force on the driving rod 2. Elastic forces of opposite directions and equal magnitude are exerted to keep the driving rod 2 in a state of force balance in the double-split position. By reasonably designing the movement position changes between the two torsion springs and the driving rod 2, two elastic members are used to apply elastic forces to the driving rod to keep it in the common position, the standby position or the double-split position, thereby realizing the three-position switching function of the conversion switch. This operating mechanism is used to realize the three-position switching and maintaining structure with simple cost and reliable operation switching. The core function of the three-position design is to ensure the safety, reliability and compliance of the dual power conversion switch during switching, thereby ensuring the continuity of the power supply system and the safety of the operator, and improving the product performance.

[0054] The multi-station operating mechanism of this embodiment further includes a power structure 6 disposed on the mechanism base 1 for driving the driving rod 2 to rotate. Figure 1As shown, the mechanism seat 1 includes a mechanism panel 11 provided with a left elastic member 4 and a right elastic member 3 and a limiting hole opened on the mechanism panel 11, and one end of the driving rod 2 passing through the limiting hole is provided with two connecting parts 21 extending horizontally back to back or at an angle, and the mechanism panel 11 is provided with two limiting blocks 12 respectively cooperating with the two connecting parts to limit the driving rod when it reaches the normal position and the standby position respectively. Specifically, the two connecting parts 21 are two connecting protrusions integrally formed on the side wall of one end of the driving rod; or, a driving gear is linked to one end of the driving rod 2, and the two connecting parts 21 are two connecting protrusions arranged on the driving gear. The driving rod 2 is elastically connected to the left and right elastic members through the two connecting parts 21. Specifically, two first connecting holes for connecting the first connecting end 31 and the second connecting end are provided on the mechanism panel 11, and the two connecting parts 21 are respectively provided with two second connecting holes for connecting the first movable end 32 and the second movable end 42, so that the transmission connection relationship between the two torsion springs and the driving rod 2 is realized, and the left and right elastic members are elastically deformed when subjected to force during the rotation of the driving rod 2, so that the driving rod 2 can maintain the position locked when reaching different positions through the elastic force provided by the two torsion springs, thereby realizing the three-position switching function of the operating mechanism.

[0055] The power structure 6 includes two electromagnet structures 61 relatively arranged on the mechanism seat 1, the two electromagnet structures 61 have two push rods 62 that perform linear reciprocating motion, and a guide sleeve 63 is linked between the two push rods 62, and a guide hole is provided on the guide sleeve 63. The movement direction of the two push rods 62 is perpendicular to the axial direction of the driving rod 2, and the driving rod 2 is provided with a push rod that penetrates into the guide hole along its radial extension. According to the contact mechanism 9 of the conversion switch 8, it includes a contact conversion shaft 91 connected to the driving rod 2 through the gear structure 7, and a contact conversion shaft 91 linked to the contact The moving contact on the conversion shaft, and the common static contact and the spare static contact respectively arranged in the conversion switch 8 and cooperating with the moving contact; therefore, the moving stroke of the push rod 62 can be controlled by the electromagnet structure 61, and then the driving rod 2 is driven to rotate a certain angle through the cooperation of the guide sleeve and the push rod, so that the motion and force are transmitted between the driving rod 2 and the contact conversion shaft 91 through the gear transmission, so that the contact conversion shaft 91 is driven by the driving rod 2 to realize rotation switching and maintenance between the common position, the spare position and the double split position, and finally the three-position conversion function of the dual power conversion switch is realized.

[0056] The elastic component in the above embodiment preferably adopts a torsion spring structure, but it is obvious that other elastic structures can also be used. As an alternative to the above elastic component, refer to Figure 5The left elastic member 4 and the right elastic member 3 are respectively two compression spring members, that is, the elastic component is selected to be two compression spring members to cooperate with the driving rod 2. Correspondingly, one end of the two compression spring members is provided with two first connecting ends 31 connected to the mechanism panel 11, and the other end of the two compression spring members is provided with two second movable ends 42 connected to the two connecting parts 21, so that when the driving rod 2 switches between the normal position, the standby position and the double-split position, it is locked in a certain position by cooperating with the two compression spring members, thereby realizing the three-position switching function of the operating mechanism.

[0057] Example 2

[0058] The difference between the multi-station operating mechanism provided in this embodiment and that in the first embodiment is that the arrangement of the elastic component between the mechanism seat and the driving rod is different. Figure 6-8 The multi-station operating mechanism includes:

[0059] The mechanism seat 1 is installed on one side of the transfer switch 8;

[0060] A driving rod 2 is rotatably disposed on the mechanism seat 1 and is extended to connect the contact mechanism 9 of the conversion switch 8. The driving rod 2 has a normal position for driving the conversion switch 8 to connect to the normal power supply and a standby position for connecting to the standby power supply, and a dual position for driving the conversion switch 8 to disconnect the normal power supply and the standby power supply at the same time. The driving rod 2 has two connecting parts 21 symmetrically arranged about its axis.

[0061] The locking assembly includes two adjusting slots 5 which are arranged on the mechanism base 1 and on both sides of the driving rod 2, and a left elastic member 4 and a right elastic member 3 which are respectively connected to the two adjusting slots 5 and the driving rod 2, wherein the right elastic member 3 has a first connecting end 31 which is slidably connected to one of the adjusting slots, and a first movable end 32 which is connected to one of the connecting parts 21; the left elastic member 4 has a second connecting end which is slidably connected to the other adjusting slot, and a second movable end 42 which is connected to the other connecting part 21; the adjusting slot has a lower end which is obliquely extended and located on the lower side, and an upper end which is obliquely extended and located on the upper side, and when the driving rod 2 switches and rotates between the normal position, the standby position and the double split position, the first connecting end 31 and the second connecting end are driven to move the adjustment positions in the two adjusting slots 5 respectively, and an elastic force is applied to the driving rod 2 to keep it in the first position, the second position or the third position through the left and right elastic members.

[0062] refer to Figure 6When the driving rod 2 is in the normal position, the first connecting end 31 of the right elastic member 3 is driven to move against the lower end of one of the adjusting slots 5, and the second connecting end 41 of the left elastic member 4 is driven to move against the upper end of the other adjusting slot 5, so that the left and right elastic members exert a force on the driving rod 2 to keep it in the normal position. At this time, the operating mechanism drives the dual power conversion switch to connect the normal power supply;

[0063] refer to Figure 7 When the driving rod 2 is in the standby position, the first connecting end 31 of the right elastic member 3 is driven to move against the upper end of one of the adjusting slots 5, and the second connecting end 41 of the left elastic member 4 is driven to move against the lower end of the other adjusting slot 5, so that the left and right elastic members exert a force on the driving rod 2 to keep it in the standby position. At this time, the operating mechanism drives the dual power conversion switch 8 to turn on the standby power supply;

[0064] refer to Figure 8 When the driving rod 2 is in the double-open position, it drives the first connecting end 31 and the second connecting end 41 to move against the upper ends of the two adjusting slots 5 respectively, so that the left and right elastic members exert a force on the driving rod 2 to maintain the double-open position. At this time, the operating mechanism drives the dual power conversion switch to disconnect the normal power supply and the backup power supply at the same time.

[0065] The above implementation is the core technical solution of this embodiment. By slidingly connecting the first connection end 31 of the left elastic member 4 and the second connection end of the right elastic member 3 in the two adjustment slots 5 of the mechanism seat 1, and connecting the first movable end 32 and the second movable end 42 to the two connecting parts 21 of the driving rod 2, the two torsion springs are subjected to force to produce elastic deformation during the rotation of the driving rod 2. In this process, the first connection end 31 and the second connection end 41 are moved along the two adjustment slots 5 to adjust their own positions, so as to adjust the position of the adapted driving rod after rotation, so that the driving rod 2 can maintain the position lock through the elastic force provided by the two elastic members when reaching different positions, thereby realizing the three-position switching function of the operating mechanism. As can be seen from the above, this operating mechanism is used to realize the three-position switching and maintaining structure with simple structure, low cost, and reliable operation switching. The core function of the three-position design is to ensure the safety, reliability and compliance of the dual power conversion switch during the switching process, thereby ensuring the continuity of the power supply system and the safety of the operator, and improving the product performance.

[0066] It is further preferred that the multi-station operating mechanism also includes a power structure 6 arranged on the mechanism base 1 for driving the driving rod 2, and the power structure 6 may preferably be an electromagnet structure 61 or a motor structure. The mechanism base 1 includes a mechanism panel 11 provided with a left elastic member 4 and a right elastic member 3 and a limiting hole opened on the mechanism panel 11. The left elastic member 4 and the right elastic member 3 may respectively be preferably torsion spring structures. Two connecting parts 21 extending horizontally back to back or at an angle are provided on one end of the driving rod 2 passing through the limiting hole, and the two adjusting slide grooves 5 are inclined slide groove structures and are symmetrically arranged on the mechanism panel 11. The two connecting parts 21 are provided with two second connecting holes for connecting the first movable end 32 and the second movable end 42.

[0067] Example 3

[0068] This embodiment provides Figure 9-10 A conversion switch shown in the figure includes a switch body, a contact mechanism 9 and the multi-position operating mechanism described in Examples 1 and 2, wherein the contact mechanism 9 includes a common static contact, a spare contact and a moving contact assembly arranged on the switch body, the moving contact assembly includes a contact conversion shaft 91 rotatably arranged on the switch body and a moving contact arranged on the contact conversion shaft 91, the contact conversion shaft 91 is connected to the drive rod 2 through a gear structure 7, the gear structure 7 includes a driving gear linked to the drive rod 2, and a driven gear correspondingly arranged on the contact conversion shaft 91 and cooperating with the driving gear, the operating mechanism uses an electromagnet or a motor as a power source to realize the driving rotation of the drive rod 2, and transmits motion and force between the drive rod 2 and the contact conversion shaft 91 through a gear transmission, thereby driving the contact conversion shaft 91 to realize rotation switching and retention between the common position, the spare position and the double-split position, and finally realizing the three-position switching function of the conversion switch. Specifically, when the driving rod 2 reaches the normal position, it drives the moving contact to close and contact with the normal static contact, that is, the conversion switch is connected to the normal power supply; when the driving rod 2 reaches the standby position, it drives the moving contact to close and contact with the standby static contact, that is, the conversion switch is connected to the standby power supply; when the driving rod 2 reaches the standby position, it drives the moving contact to disconnect and separate from the normal static contact and the standby static contact respectively, that is, the conversion switch disconnects both the standby power supply and the normal power supply.

[0069] like Fig. 9As shown, the conversion switch 8 of this embodiment is a dual power conversion switch, and the switch body is connected to the mechanism seat 1 to form an installation space 10 suitable for accommodating the left and right elastic members and the gear structure 7. One end of the driving rod 2 extends into the installation space 10. The mechanism seat 1 or the switch body is provided with two signal switches (the signal switches are not shown in the figure) respectively located on the movement paths of the two connecting parts. The two signal switches are accommodated in the installation space 10. When the driving rod 2 reaches the normal position, it drives one of the connecting parts 21 to trigger one of the signal switches to turn on, that is, it is detected that the dual power conversion switch 8 is in the normal power closing state; when the driving rod 2 reaches the standby position, it drives the other connecting part 21 to trigger the other signal switch to turn on, which is used to detect that the dual power conversion switch 8 is in the standby power closing state; in addition, when the driving rod 2 reaches the double-open position, it drives the two connecting parts 21 to move away from the two signal switches respectively, that is, it is detected that the dual power conversion switch 8 is in the double-open state. This structural setting can realize the working state detection function of the conversion switch 8 through the cooperation of the two signal switches and the two connecting parts, so that the user can clearly know the working state of the switch, and the operation is safer.

[0070] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A multi-station operating mechanism, characterized in that ,include: A mechanism seat (1) is installed on one side of the conversion switch (8); A driving rod (2) is rotatably disposed on the mechanism seat (1) and extends to connect the contact mechanism (9) of the conversion switch, the driving rod (2) having a normal position for driving the conversion switch (8) to connect the normal power supply and a standby position for connecting the standby power supply, and a dual position for driving the conversion switch (8) to disconnect the normal power supply and the standby power supply at the same time, and the driving rod (2) has two connecting parts (21) symmetrically arranged about its axis; An elastic component comprises a left elastic member (4) and a right elastic member (3) which are rotatably arranged on a mechanism seat (1) and are arranged on both sides of a driving rod (2), wherein the right elastic member (3) has a first connecting end (31) rotatably arranged on the mechanism seat (1) and a first movable end (32) connected to one of the connecting parts (21); the left elastic member (4) has a second connecting end rotatably arranged on the mechanism seat (1) and a second movable end (42) connected to the other connecting part (21); The line connecting the first connecting end (31) and the second connecting end is a critical inflection point line of the left elastic member (4) and the right elastic member (3); the axis of the driving rod is arranged below the critical inflection point line; when the driving rod (2) switches and rotates between the normal position, the standby position and the split position, at least one of the first movable end (32) and the second movable end (42) is driven to cross the critical inflection point line, thereby applying an elastic force to the driving rod (2) through the left and right elastic members to keep the driving rod (2) in the normal position, the standby position or the split position.

2. The multi-station operating mechanism according to claim 1, characterized in that: The left elastic member (4) and the right elastic member (3) are respectively two torsion spring members or respectively two compression spring members; When the driving rod (2) moves to the double-split position, the first movable end (32) and the second movable end (42) respectively move to the lower side of the critical inflection point line, so that the left and right elastic members exert elastic forces of opposite directions and equal magnitude on the driving rod (2).

3. The multi-station operating mechanism according to claim 2, characterized in that: When the driving rod (2) moves to the normal position, the first movable end (32) moves to the lower side of the critical inflection point line, and the second movable end (42) is driven by the driving rod (2) to be located at the upper side of the critical inflection point line, so that the driving rod (2) is subjected to the unidirectional combined force of the left and right elastic members to rotate in the positive direction and remain in the normal position; When the driving rod (2) moves to the back-use position, the second movable end (42) moves to the lower side of the critical inflection point line, and the driving rod (2) drives the first movable end (32) to be located on the upper side of the critical inflection point line, so that the driving rod (2) is subjected to the unidirectional combined force of the left and right elastic members to rotate in the opposite direction and remain in the standby position.

4. The multi-station operating mechanism according to claim 1, characterized in that: The invention also comprises a power structure (6) arranged on the mechanism seat (1) for driving the driving rod (2); the mechanism seat (1) comprises a mechanism panel (11) provided with a left elastic member (4) and a right elastic member (3) and a limit hole provided on the mechanism panel (11); one end of the driving rod (2) passing through the limit hole is provided with two connecting parts (21) extending horizontally in opposite directions or extending at an angle; the mechanism panel is provided with two limit blocks (12) respectively cooperating with and opposite to the two connecting parts; the mechanism panel (11) is provided with two first connecting holes for connecting a first connecting end (31) and a second connecting end; the two connecting parts (21) are respectively provided with two second connecting holes for connecting a first movable end (32) and a second movable end (42).

5. The multi-station operating mechanism according to claim 4, characterized in that: The two connecting parts (21) are two connecting protrusions integrally formed on the side wall of one end of the driving rod; or, A gear structure (7) is linked to one end of the driving rod (2), and the two connecting parts (21) are two connecting protrusions arranged on the gear structure (7).

6. The multi-station operating mechanism according to claim 4, characterized in that: The power structure (6) comprises two electromagnet structures (61) arranged relatively to each other on the mechanism seat (1), the two electromagnet structures (61) having two push rods (62) for linear reciprocating motion, and a guide sleeve (63) being arranged in linkage between the two push rods (62), the guide sleeve (63) being provided with a guide hole, and the driving rod (2) being provided with a guide push rod (22) extending along its radial direction and penetrating into the guide hole.

7. A multi-station operating mechanism, characterized in that ,include: A mechanism seat (1) is installed on one side of the conversion switch (8); A driving rod (2) is rotatably disposed on the mechanism base (1) and is extended to connect the contact mechanism (9) of the conversion switch (8). The driving rod (2) has a normal position for driving the conversion switch (8) to connect the normal power supply and a standby position for connecting the standby power supply, and a dual position for driving the conversion switch (8) to disconnect the normal power supply and the standby power supply at the same time. The driving rod (2) has two connecting parts (21) symmetrically arranged about its axis. The locking assembly comprises two adjusting slots (5) arranged on a mechanism seat (1) and arranged on both sides of a driving rod (2), and a left elastic member (4) and a right elastic member (3) respectively connected to the two adjusting slots (5) and the driving rod (2), wherein the right elastic member (3) comprises a first connecting end (31) slidably connected to one of the adjusting slots, and a first movable end (32) connected to one of the connecting parts (21); the left elastic member (4) comprises a second connecting end (41) slidably connected to the other adjusting slot, and a second movable end (42) connected to the other connecting part (21); when the driving rod (2) switches and rotates between a normal position, a standby position and a double split position, the first connecting end (31) and the second connecting end are driven to move and adjust positions in the two adjusting slots (5), and an elastic force is applied to the driving rod (2) through the left and right elastic members to keep the driving rod (2) at the first position, the second position or the third position.

8. The multi-station operating mechanism according to claim 7, characterized in that : It also includes a power structure (6) arranged on the mechanism base (1) for driving the driving rod (2), the mechanism base (1) includes a mechanism panel (11) provided with a left elastic member (4) and a right elastic member (3) and a limiting hole opened on the mechanism panel (11), one end of the driving rod (2) passing through the limiting hole is provided with two connecting parts (21) extending horizontally in reverse or at an angle, the two adjusting slide grooves (5) are inclined slide groove structures and are symmetrically arranged on the mechanism panel (11), and the two connecting parts (21) are provided with two second connecting holes for connecting the first movable end (32) and the second movable end (42).

9. A transfer switch, characterized in that: It comprises a switch body, a contact mechanism (9) and a multi-station operating mechanism as described in any one of claims 1 to 8, wherein the contact mechanism (9) comprises a common static contact, a spare contact and a moving contact assembly arranged on the switch body, and the moving contact assembly comprises a contact conversion shaft (91) rotatably arranged on the switch body and a moving contact arranged on the contact conversion shaft (91), and the contact conversion shaft (91) is connected to a driving rod (2) via a gear structure (7).

10. The transfer switch according to claim 9, characterized in that: The switch body and the mechanism seat (1) are connected to form an installation space (10) suitable for accommodating the left and right elastic members and the gear structure (7); one end of the drive rod (2) extends into the installation space (10); two signal switches are respectively arranged on the mechanism seat (1) or the switch body and are located on the movement paths of the two connecting parts (21); the two signal switches are accommodated in the installation space (10); when the drive rod (2) reaches the normal position, it drives one of the connecting parts (21) to trigger one of the signal switches to turn on; when the drive rod (2) reaches the standby position, it drives the other connecting part (21) to trigger the other signal switch to turn on; when the drive rod (2) reaches the double-split position, it drives the two connecting parts (21) to move away from the two signal switches respectively.

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