Dual power transfer switch

Abstract

A dual power transfer switch comprises: a first switch and a second switch arranged side by side, each being provided with an operation hole for on-off operation, and the center distance of the two operation holes being L1; an operating mechanism having two driving shafts, and the two driving shafts being arranged in linkage with the first switch and the second switch respectively, the operating mechanism being provided with a handle assembly rotatable relative to the upper side, and the operating mechanism being provided with an operating assembly for transmitting the action of the handle assembly to the corresponding driving shaft, and the center distance between the two driving shafts being L2; the first switch and the second switch are provided with an accessory for increasing the width of the first switch and the second switch, and the thickness L3 of the accessory satisfies L3+L1=L2. The application uses the accessory to compensate for the width difference between switches of different current values, thereby ensuring that the operation holes of the two switches arranged side by side can always be aligned with the driving shafts of the operating mechanism, and realizing the universality of the operating mechanism.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a dual power supply transfer switch. Background Technology

[0002] To ensure the normal operation of electricity in daily life and avoid power outages caused by power system failures, large-scale continuous production enterprises in industries such as petroleum, chemical, metallurgy, power, and telecommunications often employ dual power supply systems or a primary and backup power supply configuration. This ensures that if one power source fails and power is lost, the other power source can be immediately put into use.

[0003] The conventional dual-power transfer switch and the operating mechanism are fully compatible, so the two need to be the same length so that the operating mechanism can operate the two switches of the dual-power transfer switch independently.

[0004] In reality, the widths of the individual switches in a dual power transfer switch vary due to the different currents they carry, necessitating the use of different sized operating mechanisms, which increases costs. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a dual power supply transfer switch.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A dual power supply transfer switch, comprising: A first switch and a second switch are arranged side by side, and both the first switch and the second switch have operating holes on their upper surfaces for opening and closing operations, and the center distance between the two operating holes is L1. An operating mechanism is disposed above the first switch and the second switch. The operating mechanism has two drive shafts, which are respectively linked to the first switch and the second switch. The upper side of the operating mechanism is provided with a handle assembly that can rotate relative to each other. The operating mechanism is provided with an operating component for transmitting the movement of the handle assembly to the corresponding drive shaft. The center distance between the two drive shafts is L2. An accessory is provided between the first switch and the second switch, and the width L3 of the accessory satisfies L3+L1=L2.

[0007] The first switch and the second switch are provided with several mating grooves on their opposite sides, and the two sides of the accessory are provided with mating blocks that form a limiting fit with the mating grooves.

[0008] The mating block is a T-shaped block, and the mating groove is a recessed groove on the first switch or the second switch, with a concave wall on the outer bottom of the groove.

[0009] The first switch or the second switch includes: case; Several stationary contacts are symmetrically arranged inside the housing; The first moving contact assembly is movable relative to the height of the housing and can contact or separate from the stationary contact. The locking component can be rotated by a drive shaft, and it has a first position that causes the moving contact to move relative to the stationary contact and to contact the stationary contact, and a second position that causes the moving contact to separate from the stationary contact.

[0010] The locking component has symmetrical tops on both sides of its upper end, and a reset component is provided between the tops and the housing.

[0011] The non-opposite side of the first or second switch is provided with a detachable phase wire accessory.

[0012] The first moving contact assembly of the first switch or the second switch is provided with a linkage hole, and the second moving contact assembly of the phase wire accessory is provided with a linkage element corresponding to the linkage hole.

[0013] The handle assembly includes a handle rotatably disposed on the upper surface of the operating mechanism, the end of the handle having an opening, and a locking key that can move relative to the length direction of the handle being disposed within the opening.

[0014] The bottom of the lock key extends downward to form a locking block. The upper surface of the operating mechanism is provided with a first arc-shaped groove that matches the locking block. The middle of the first arc-shaped groove extends outward to form a first limiting groove. The locking block has an unlocked state in which the handle assembly can rotate relative to the locking block when it is placed in the first arc-shaped groove, and a locked state in which the handle assembly cannot rotate when the locking block moves into the first limiting groove.

[0015] The upper surface of the first switch or the second switch is provided with a second arc-shaped groove, the second arc-shaped groove is arranged around the operating hole, and one end of the second arc-shaped groove extends outward to form a second limiting groove. The handle assembly can be inserted into the operating hole, and the locking block can move along the second arc-shaped groove.

[0016] The beneficial effects of this utility model are as follows: This application uses the attachment to compensate for the width difference between switches with different current values, thereby ensuring that the operating holes of the two side-by-side switches can always be aligned with the drive shaft of the operating mechanism, thus realizing the versatility of the operating mechanism. Attached Figure Description Figure 1 This is a schematic diagram of the structure of this utility model (when L1+L3=L2).

[0017] Figure 2 This is a front view of the switch body of this utility model (when L1+L3=L2).

[0018] Figure 3 This is an exploded view of the switch body and operating mechanism of this utility model (when L1+L3=L2).

[0019] Figure 4 This is an exploded view of the switch body of this utility model.

[0020] Figure 5 This is a schematic diagram of the internal structure of the first switch of this utility model.

[0021] Figure 6 This is a schematic diagram showing the cooperation between the handle assembly and the operating mechanism of this utility model.

[0022] Figure 7 This is a cross-sectional schematic diagram of the operating mechanism and handle assembly of this utility model.

[0023] Figure 8 This is a schematic diagram of the structure of this utility model (when L1=L2).

[0024] Figure 9 This is a front view of the switch body of this utility model (when L1=L2). Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the attached figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] like Figure 1 As shown, this utility model discloses a dual power transfer switch, which consists of a switch body and an operating mechanism. The switch body and the operating mechanism are detachably connected and can be used as a whole. The dual power transfer switch function can be realized by assembly. The switch body 100 includes a first switch 110 and a second switch 120 arranged side by side, which are used for switching on the main power supply and the backup power supply, respectively. The operating mechanism is used to actively control the closing or opening of the first switch and the second switch.

[0028] like Figure 2As shown, the first switch 110 and the second switch 120 are arranged side by side, and the upper surfaces of the first switch 110 and the second switch 120 are provided with operating holes 150 for opening and closing operations, and the center distance between the two operating holes 150 is L1. like Figure 3 As shown, the operating mechanism 200 is disposed above the first switch 110 and the second switch 120. The operating mechanism 200 has two drive shafts 210, and the two drive shafts 210 are respectively linked to the first switch 110 and the second switch 120. The upper side of the operating mechanism 200 is provided with a handle assembly 300 that can rotate relative to each other, and the operating mechanism 200 is provided with an operating component for transmitting the action of the handle assembly 300 to the corresponding drive shaft 210. The center distance between the two drive shafts 210 is L2. An accessory 130 is provided between the first switch 110 and the second switch 120, and the width L3 of the accessory 130 satisfies L3+L1=L2.

[0029] Where L1 = distance L4 from the center of the operating hole of the first switch to the side wall of the first switch + distance L5 from the center of the operating hole of the second switch to the side wall of the second switch. And L1 is at most equal to L2, meaning the first and second switches can be directly combined with the operating mechanism, such as... Figure 8 and Figure 9 As shown, in this case, no additional accessories are needed. However, when the first switch and the second switch are directly assembled, if L1 is less than L2, then corresponding accessories need to be added between them to align the operating holes of the first switch and the second switch with the drive shaft of the operating mechanism.

[0030] The operating components consist of two driven gears coaxially arranged with the drive shaft and one driving gear linked with the handle assembly. The driven gears are fully driven gears, while the driving gear can be either fully driven or partially driven. The appropriate driving gear is selected according to the function to be achieved. When the handle assembly is activated, it drives the driving gear to rotate, and the driving gear, in turn, drives the driven gear meshing with it, thereby opening and closing the first switch and / or the second switch.

[0031] like Figure 4 As shown, the first switch 110 and the second switch 120 are provided with a plurality of mating grooves 111 on the opposite side, and the two sides of the accessory 130 are provided with mating blocks 131 that form a limiting fit with the mating grooves 111.

[0032] The mating block 131 is a T-shaped block, and the mating groove 111 is a recessed groove on the first switch 110 or the second switch 120, and the bottom outer side of the groove is provided with a concave wall.

[0033] The accessory can move from top to bottom along the side wall of the first or second switch. The mating block is first inserted into the mating groove, and then moved downward to make the mating block snap into the concave wall, thus locking the two parts. The accessory is used to connect the first and second switches. When the accessory is not needed, the first and second switches are in direct contact. A similar mating structure can also be used to achieve locking. If they are in direct contact, the two can be fixed by the operating mechanism.

[0034] like Figure 5 As shown, the first switch 110 or the second switch 120 includes: case; Several stationary contacts 10 are symmetrically arranged inside the housing; The first moving contact assembly 20 is movable relative to the height of the housing and can contact or separate from the stationary contact. The locking component 30 can be rotated by the drive shaft 210, and it has a first position that causes the moving contact to move relative to the stationary contact and to contact the stationary contact, and a second position that causes the moving contact to separate from the stationary contact.

[0035] The upper end of the locking component 30 is symmetrically provided with tops 40 on both sides, and a reset component is provided between the tops 40 and the housing.

[0036] The locking component includes a rotating part located on the upper side and a pressing part located on the lower side of the rotating part. The rotating part is rhomboid in shape and has a long center line and a short center line that are vertically arranged. The pressing part is linear in shape, and the center line of the pressing part is arranged perpendicular to the long center line of the rotating part.

[0037] The first moving contact assembly includes a plug core, the bottom of which is provided with multiple phase wire channels, and each phase wire channel is provided with a moving contact that mates with the stationary contact. The top of the plug core is provided with a slot, the center line of which is aligned with the long center line.

[0038] When the locking / unlocking component is in its initial state, the constant pressure plate presses against the upper end of the molten core, causing the molten core to move downwards and compress the return spring at the bottom. At this time, the moving contact and the stationary contact are separated. When the locking / unlocking component is rotated, the top pressure member rotates relative to it and eventually aligns with the slot. At this time, the molten core is released from its force and moves upwards under the action of the return spring, causing the moving contact to contact the stationary contact. Simultaneously, the two ends of the long center line of the rotating part compress the tops located on both sides after rotation, causing the tops to compress the return member and be in an energy-storing state. When the drive shaft needs to open the circuit, after rotating a certain angle, the tops will be released from their force, and the return member's elastic force will accelerate the opening. At the same time, the presence of the tops also provides a certain resistance to the locking / unlocking component, preventing accidental closing due to shaking or vibration.

[0039] The other side of the first switch 110 or the second switch 120 is provided with a detachable phase wire accessory 140. The first switch and the second switch are three-phase three-wire structures. If a three-phase four-wire structure is required, only the corresponding phase wire accessory needs to be purchased. The conversion from three-phase three-wire to three-phase four-wire can be achieved by splicing them together. At the same time, there is no need to replace the main switch body, reducing the replacement cost for consumers.

[0040] The first moving contact assembly 20 of the first switch 110 or the second switch 120 is provided with a linkage hole 21, and the second moving contact assembly of the phase wire accessory 140 is provided with a linkage member 141 corresponding to the linkage hole. After assembly, by using the plug-in cooperation of the linkage member and the linkage hole, the first moving contact assembly of the first switch or the second switch can drive the second moving contact assembly located in the phase wire accessory to operate, ensuring its normal use.

[0041] like Figure 6 and Figure 7 As shown, the handle assembly 300 includes a handle 310 rotatably mounted on the upper surface of the operating mechanism 200. The handle 310 has an opening at its end, and a locking key 320 that can move relative to the length of the handle 310 is provided within the opening. The handle includes a handle base and a handle cover, which together form a complete handle. The non-rotating end of the handle base has an opening, and the locking key 320 is slidably mounted within the handle base and can be pulled out by external force.

[0042] The bottom of the locking key 320 extends downward to form a locking block 321. The upper surface of the operating mechanism 200 is provided with a first arc-shaped groove 220 that is adapted to the locking block 321. The first arc-shaped groove 220 extends outward from the middle to form a first limiting groove 230. The locking block 321 has an unlocked state in which the handle assembly 300 can rotate relative to it when it is placed in the first arc-shaped groove 220, and a locked state in which the handle assembly 300 cannot rotate when the locking block 321 moves into the first limiting groove 230.

[0043] The arc-shaped groove and the limiting groove are approximately Y-shaped. When the handle rotates relative to each other, the locking block always moves within the arc-shaped groove. When the locking block is in the open position, pulling out the locking key allows the locking block to enter the limiting groove. At this time, the handle cannot be rotated because of the restriction of the locking block, thus achieving locking.

[0044] The operating shaft and drive shaft of the handle assembly are set to have the same size and shape, so the handle assembly can be directly used for the opening and closing operation of the first switch or the second switch. That is, when there is no need for dual power supply conversion, the operating mechanism can be disassembled and the operating shaft of the handle assembly can be directly inserted into the operating hole of the first switch to realize the opening and closing operation of the first switch.

[0045] The upper surface of the first switch 110 or the second switch 120 is provided with a second arc-shaped groove 160. The second arc-shaped groove 160 is located outside the operation hole 150, and one end of the second arc-shaped groove 160 extends outward to form a second limiting groove 161. The handle assembly 300 can be inserted into the operation hole 150, and the locking block 321 can move along the second arc-shaped groove 160.

[0046] The arc length of the second arc groove is about half that of the first arc groove, which just meets the rotation angle of the handle assembly from open to closed. At the same time, the locking block at the bottom of the handle assembly can also verify the movement of the second arc groove. When the handle assembly needs to be locked in the open state, the locking key can be pulled out to allow the limit block to enter the second limit groove, thereby restricting the rotation of the handle assembly. The padlock can also be used to increase security.

[0047] The embodiments should not be regarded as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A dual-power transfer switch, characterized in that: It includes: A first switch (110) and a second switch (120) are arranged side by side, and the upper surfaces of the first switch (110) and the second switch (120) are provided with operating holes (150) for opening and closing operations, and the center distance between the two operating holes (150) is L1; An operating mechanism (200) is disposed above the first switch (110) and the second switch (120). The operating mechanism (200) has two drive shafts (210), and the two drive shafts (210) are respectively linked with the first switch (110) and the second switch (120). The upper side of the operating mechanism (200) is provided with a handle assembly (300) that can rotate relative to each other. The operating mechanism (200) is provided with an operating component for transmitting the action of the handle assembly (300) to the corresponding drive shaft (210). The center distance between the two drive shafts (210) is L2. An accessory (130) is provided between the first switch (110) and the second switch (120), and the width L3 of the accessory (130) satisfies L3+L1=L2.

2. The dual power supply transfer switch according to claim 1, characterized in that: The first switch (110) and the second switch (120) are provided with a plurality of mating grooves (111) on the opposite side, and the accessory (130) is provided with mating blocks (131) on both sides corresponding to the mating grooves (111) to form a limiting fit.

3. A dual power supply transfer switch according to claim 2, characterized in that: The mating block (131) is a T-shaped block, and the mating groove (111) is a recessed groove on the first switch (110) or the second switch (120), and the bottom outer side of the groove is provided with a concave wall.

4. A dual power supply transfer switch according to claim 1, characterized in that: The first switch (110) or the second switch (120) includes: case; Several stationary contacts (10) are symmetrically arranged inside the housing; The first moving contact assembly (20) can move relative to the height of the housing and contact or separate from the stationary contact; The locking component (30) can be rotated by the drive shaft (210), and it has a first position that causes the moving contact to move relative to the stationary contact and to contact the stationary contact, and a second position that causes the moving contact to separate from the stationary contact.

5. A dual power supply transfer switch according to claim 4, characterized in that: The upper end of the locking component (30) is symmetrically provided with tops (40), and a reset component is provided between the tops (40) and the housing.

6. A dual power supply transfer switch according to claim 1, characterized in that: The other side of the first switch (110) or the second switch (120) is provided with a detachable phase wire accessory (140).

7. A dual power supply transfer switch according to claim 6, characterized in that: The first moving contact assembly (20) of the first switch (110) or the second switch (120) is provided with a linkage hole (21), and the second moving contact assembly of the phase wire accessory (140) is provided with a linkage member (141) corresponding to the linkage hole.

8. A dual power supply transfer switch according to claim 1, characterized in that: The handle assembly (300) includes a handle (310) rotatably disposed on the upper surface of the operating mechanism (200), the end of the handle (310) having an opening, and a locking key (320) movable relative to the length direction of the handle (310) being provided in the opening.

9. A dual power supply transfer switch according to claim 8, characterized in that: The bottom of the locking key (320) extends downward to form a locking block (321). The upper surface of the operating mechanism (200) is provided with a first arc-shaped groove (220) that is adapted to the locking block (321). The first arc-shaped groove (220) extends outward from the middle to form a first limiting groove (230). The locking block (321) has an unlocked state in which the handle assembly (300) can rotate relative to the locking block (321) when it is placed in the first arc-shaped groove (220) and a locked state in which the handle assembly (300) cannot rotate when the locking block (321) moves into the first limiting groove (230).

10. A dual power supply transfer switch according to claim 9, characterized in that: The upper surface of the first switch (110) or the second switch (120) is provided with a second arc-shaped groove (160). The second arc-shaped groove (160) is located outside the operation hole (150), and one end of the second arc-shaped groove (160) extends outward to form a second limiting groove (161). The handle assembly (300) can be inserted into the operation hole (150), and the locking block (321) can move along the second arc-shaped groove (160).

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