CN220121700U - Interlocking mechanism of automatic change-over switch and automatic change-over switch with same - Google Patents

Abstract

The utility model relates to an interlocking mechanism of an automatic transfer switch, which comprises a breaking button positioned on the outer side surface of a shell; a switch button positioned on the outer side surface of the shell; a slider positioned on the inner side of the housing; a lever member pivotally mounted to an inner side of the housing; wherein the interlocking mechanism is configured such that when the switch button is actuated from the first manual position or the second manual position to the automatic position, the slider vertically pivots the lever member from the unlocking position to the locking position. The technical requirement for interlocking between various operating modes in an automatic transfer switch is thereby achieved in a simple manner and the reliability and diversity of the operation of the automatic transfer switch are improved. The utility model also relates to an automatic transfer switch with the interlocking mechanism.

Description

Interlocking mechanism of automatic transfer switch and automatic transfer switch having the same

Technical field

The utility model relates to the technical field of automatic transfer switch manufacturing, in particular to an interlocking mechanism for manual and automatic control of an automatic transfer switch, and also relates to an automatic transfer switch with an interlocking mechanism of the automatic transfer switch.

Background technique

It is known that interruption of power supply is not allowed in many medical and industrial and commercial fields. In order to ensure that power does not unexpectedly be interrupted, uninterruptible power supply systems (UPS) and generators provide continuous power supply for different purposes and timings. Function. Among them, the uninterruptible power supply system (UPS) immediately supplies power to the electronic load when the power is cut off to prevent the operating load from being interrupted. It is usually used in computer systems so that the operator has enough time to store the data being processed and use it. Computer data will not be lost due to power outages, but uninterruptible power supply systems (UPS) generally only provide power for a short period of time and do not provide normal power supply. When a system or load requires backup power to maintain operation, a backup generator must be used to generate its own power to supply the required power.

In order for the load to be connected to the generator in a short time during a power outage and the generator to supply power, an automatic power transfer switch (also known as ATS) must be installed between the mains, the generator and the load. The purpose of the automatic transfer switch is simply to connect two power supplies, one for normal use and one for backup. When the main power supply suddenly fails or has a power outage, the automatic transfer switch automatically switches to the backup power supply so that the equipment can still operate normally. The most common ones are elevators, fire protection, and surveillance. Most factories, mines or units with first-class and second-class loads have them.

The known automatic transfer switch is generally packaged in a complete casing, and its wiring is a two-way power supply, one for use and one for backup. It is composed of two load isolation switches superimposed and combined with a controller, and has mechanical interlocking and Electrical interlocking, in the traditional automatic transfer switch, there are two sets of moving contacts, which are realized through mechanical and electrical interlocking to prevent parallel operation without power supply. The automatic transfer switch control device realizes the motor stop through a relatively complex transmission energy storage mechanism. The transmission energy storage mechanism is mainly composed of a rocker arm, a first rocker arm, a second rocker arm, a connecting rod, a rotating shaft and a spring. When the common power supply fails, When the power is on, the main shaft of the reduction mechanism rotates counterclockwise, driving the second rocker arm to rotate counterclockwise. The second rocker arm drives the connecting rod to move to the left, and the connecting rod drives the third rocker arm and spring to move to the left. At this time, the rocker arm and The first rocker arm moves to the left at the same time and compresses the spring to store energy in the transmission energy storage mechanism; when the rocker arm and the first rocker arm move vertically, that is, the dead center of the transmission energy storage mechanism, the spring compression amount is maximum, and the connecting rod is The rocker arm and the first rocker arm continue to move to the left. At this time, the spring energy is released, causing the rocker arm and the first rocker arm to move to the left. After the transmission energy storage mechanism passes the dead center, a stop signal is sent to the control circuit board through the micro switch. Signal. At the same time, a handle for manual driving is also set on the rotating shaft. Once the motor fails, the handle can be used to drive the switch to switch the work.

In short, automatic transfer switches generally have two operating modes, namely automatic operation controlled by a controller and manual operation. Therefore, how to ensure that the automatic transfer switch is always operated according to regulations and minimize the possibility of operator misoperation becomes important. In this regard, for example, the Chinese Utility Model Patent Announcement with the authorization announcement number CN203552986U describes a mechanical anti-accidental locking device of an automatic transfer switch. As shown in Figure 1 of the document, the mechanical anti-accidental locking device The device includes a first rotating member, a first locking member, a first blocking member, a first spring and a first supporting member for a first cable incoming functional unit, and a second rotating member for a second cable incoming functional unit. , a second locking member, a second shielding member, a second spring and a second supporting member, and an interlocking rod that interlocks the first and second line incoming functional units. The first incoming line functional unit is used to control the first power switching mechanism, and the second incoming line functional unit is used to control the second power switching mechanism. When the user desires to operate the first power switch mechanism, the user flips the pin to the left, causing the first shielding member to pivot counterclockwise, so that the shielding portion moves away from the operation hole to expose the operation hole. After the operating hole 1 is exposed, the user can insert the operating handle into the operating hole to rotate the rotating shaft of the first power switch mechanism and perform a closing operation on the first power switch. When the first power switch is in the closed state, since the protruding part of the first locking member is pressed in the first limiting groove by the spring, when the user tries to flip the pin to the right, the left end of the first limiting groove will limit The movement of the protruding portion of the first locking member prevents the shielding portion of the second shielding member from rotating to a position where the operation hole is exposed. In this way, when the first power switch is in the closed state, the operation hole of the incoming line functional unit of the second power switch is always blocked, making the second power switch unable to be operated.

However, although the automatic transfer switch in the prior art has two functions of manual control opening and closing and automatic control opening and closing and is realized through a switching mechanism, there are still manual control opening and closing and automatic control opening and closing. The shortcomings of low switching efficiency, cumbersome operation and high possibility of user misoperation make it difficult to meet the rapid response characteristics of automatic transfer switches.

Therefore, there is a technical need in the relevant technical field to realize interlocking between multiple operating modes in an automatic transfer switch in a simple manner.

Utility model content

Therefore, the task of the present invention is to provide an interlocking mechanism for an automatic transfer switch and an automatic transfer switch having the same, thereby overcoming the above-mentioned shortcomings of the prior art.

According to one aspect of the present invention, an interlocking mechanism of an automatic transfer switch is provided, including a housing fixedly connected to a transfer switch base, wherein two switching mechanisms are installed on the transfer switch base, and each switching mechanism can Driving a set of contact mechanisms to open and close, wherein the interlocking mechanism also includes: a circuit break button located on the outer side of the housing, which is configured to actuate the opening operation of the contact mechanism; a switching button located on the outer side of the housing , wherein the switch button is configured to move vertically between an automatic position, a first manual position and a second manual position; a slider located on the inner side of the housing, wherein the slider is fixedly connected to the switch a lever member pivotally mounted to the inner side of the housing, wherein the first end of the lever member is operatively connected to the slide member and has a second end extending adjacent the disconnect button , wherein the lever member has a locking position in which the second end overlaps the circuit-breaking button and an unlocking position in which the second end is staggered with the circuit-breaking button; wherein the interlocking mechanism is configured to operate when the switch button is moved from the first manual position Or when the second manual position moves to the automatic position, the sliding member vertically drives the lever member to pivot from the unlocking position to the locking position.

According to the interlocking mechanism of the automatic transfer switch of the present invention, the safety of the circuit-breaking button and manual closing operation of the automatic transfer switch can be ensured without affecting the user's normal operation of the switching push button, which is beneficial to improving the operation of the automatic transfer switch. reliability and diversity. Moreover, the interlocking mechanism according to the present invention requires fewer parts, has low cost and has good reliability.

In some embodiments, a flip cover is further included that is pivotally connected to an outer side of the housing, wherein the flip cover is configured to close a handle cavity housing an operating handle of the switching mechanism, wherein the flip cover has a handle that can be inserted into the A flip cover hook on the inner side of the housing that places the flip cover in a locked position, wherein the interlocking mechanism is configured so that when the switch button moves from the first manual position or the second manual position to the automatic position, the slide When the lever member is driven by the lever member to move to the locking position, the flip cover hook can be engaged.

In some embodiments, a return spring is further included between the inner side of the housing and the lever member, wherein the return spring is configured to operate when the switch button is in the first manual position or the second manual position. The manual position biases the lever member back to the unlocked position.

In some embodiments, the sliding member is configured as a plate-like member disposed closely against the inner side of the housing, wherein a lower portion of the sliding member is provided with a slot operatively engaged with the lever member, wherein the slot The slot is designed to have a vertical length shorter than a vertical stroke length of the switch button from the second manual position to the automatic position.

In some embodiments, the lever member is designed to be pivotally mounted to the inside side of the housing via a limit screw serving as a pivot point, wherein the first and second ends are offset from each other about the pivot point thereof by approximately 90 degrees.

In some embodiments, the first end of the lever member is designed with a protrusion that can extend into the slot, wherein when the switch button moves vertically to the automatic position, the sliding member Lift the protruding portion to drive the lever member to rotate clockwise to its locking position.

In some embodiments, the lever member further includes a third end protruding outward from the second end, wherein the third end is located near the flip hook such that when the lever member rotates clockwise When it reaches its locked position, the third end is engaged with the flip cover hook to move the flip cover to its locked position.

According to another aspect of the present invention, an automatic transfer switch is provided, which includes: a transfer switch base installed with two switching mechanisms, wherein each switching mechanism can drive a set of contact mechanisms to open and close; and is fixedly connected to The housing of the switch base, wherein the outer side of the housing is provided with two operating through holes to allow an operating handle to be inserted into each of the operating through holes to actuate a switching mechanism to realize manual opening and closing of the contact mechanism. a gate; further including an interlocking mechanism fixedly mounted to said housing.

In some embodiments, it further includes an opening mechanism component located on the inner side of the housing, wherein one end of the opening mechanism component is arranged adjacent to the circuit breaker button to respond to the circuit breaker button when the lever member is in the unlocked position. The action activates the opening operation of the contact mechanism.

In some embodiments, the switch button also has a marking line for marking the position, wherein marks respectively corresponding to the automatic position, the first manual position and the second manual position are provided on the outer side of the housing, wherein the marking line Is configured to be aligned one-to-one with the corresponding mark when the toggle button is in the corresponding position.

Some of the other features and advantages of the present invention will be apparent to those skilled in the art after reading this application, and the other part will be described in the following detailed description in conjunction with the accompanying drawings.

Description of the drawings

Below, the embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein:

Figure 1 is a front view of the automatic transfer switch according to the present utility model, wherein the automatic transfer switch is in automatic mode;

Figure 2 is a perspective view of the interlocking mechanism of the automatic transfer switch according to the present invention, in which the switching button of the automatic transfer switch is in the automatic position;

Figure 3 is a perspective view of the housing of the automatic transfer switch according to the present invention, in which the switching button of the automatic transfer switch is in the automatic position;

Figure 4 is a front view of the automatic transfer switch according to the present utility model, wherein the automatic transfer switch is in manual mode;

Figures 5-6 are perspective views of the interlocking mechanism of the automatic transfer switch according to the present invention, in which the switching button of the automatic transfer switch is in the first manual position;

Figure 7 is a front view of the automatic transfer switch according to the present utility model, wherein the automatic transfer switch is in manual mode;

Figure 8 is a perspective view of the interlocking mechanism of the automatic transfer switch according to the present invention, in which the switching button of the automatic transfer switch is in the second manual position;

9 is a perspective view of the housing of the automatic transfer switch according to the present invention, in which the switching button of the automatic transfer switch is in the second manual position.

Explanation of reference symbols:

100. Automatic transfer switch; 10. Interlocking mechanism; 20. Transfer switch base

30. Shell; 11. Break button; 12. Switch button; 121. Marking line

13. Sliding piece; 131. Slotting; 14. Lever piece; 141. First end;

142. Second end; 143. Third end; 144. Limiting screw;

15. Flip cover; 151. Flip cover hook; 16. Return spring;

Detailed ways

Referring to the accompanying drawings, the interlocking mechanism of the automatic transfer switch disclosed in the present invention and the schematic scheme of the automatic transfer switch having the interlocking mechanism will be described in detail. Although the drawings are provided to present some embodiments of the invention, the drawings are not necessarily drawn to the dimensions of the specific embodiments, and certain features may be exaggerated, removed, or partially sectioned to better illustrate and explain the invention. A new type of public content. Some components in the drawings can be positioned according to actual needs without affecting the technical effect. The appearance of the phrase "in the drawings" or similar expressions in the specification does not necessarily refer to all figures or examples.

Certain directional terms used herein below to describe the drawings, such as "in," "out," "above," "below," and other directional terms, are to be understood to have their normal meanings and to refer to normal viewing. those directions involved in the diagram. Unless otherwise specified, the directional terms described in this specification basically follow the conventional directions understood by those skilled in the art.

The terms "first", "first", "second", "second" and similar terms used in this utility model do not indicate any order, quantity or importance in this utility model. Rather, it is used to distinguish one component from other components.

In order to have a further understanding of the purpose, structure, characteristics, and functions of the present invention, a detailed description is given below with reference to examples.

As shown in Figures 1-9 of the present invention, the automatic transfer switch 100 according to the present invention includes a switch base 20 equipped with two switching mechanisms (not shown), wherein each switching mechanism can drive a set of The contact mechanism opens and closes. Here, one set of contact mechanisms can be designed to open and close the load end located below the automatic transfer switch 100 in Figure 1 and the common power end located above. The other set of contact mechanisms enables the Open and close the load end and backup power end. Further, the automatic transfer switch 100 also includes a housing 30 fixedly connected to the switch base 20, wherein the outer side of the housing is provided with two operating through holes to allow an operating handle to be inserted into each operating through hole to facilitate the operation. Move a switching mechanism to realize manual opening and closing of the contact mechanism.

Here, in order to prevent the operating handle from being lost during use, the automatic transfer switch 100 further includes a flip cover 15 pivotably connected to the outer side of the housing 30 , wherein the flip cover 15 is configured to close the operation of the switching mechanism inside. The handle cavity of the handle. Here, the specific structure of the hinged connection between the flip cover 15 and the outer surface of the housing 30 is: one hinge shaft is provided at both ends of one side of the flip cover 15, two hinge holes are provided on the outer surface of the housing 30, and two hinge shafts are provided. The flip cover 15 is hinged on the outer surface of the cover body 1 by matching with the two hinge holes respectively. Preferably, the two operating through holes can also be provided in the area of the handle cavity covered by the flip cover 15 . Here, the flip cover 15 can be snap-connected with the housing 30 on one side. The preferred specific structure is: one side of the flip cover 15 is provided with at least one plug that can be inserted into the inner side of the housing 30 to place the flip cover 15 in place. When the flip hook 151 is in the locked position, a matching groove is opened in the housing 30 to accommodate the flip hook 151 . When the flip cover 15 is closed, at least one flip hook 151 can be set into the matching groove of the housing 30 to enter the inner side of the housing 30 . Furthermore, as described below, the flip cover hook 151 can be interlocked by means of the interlocking mechanism 10 . Specifically, the interlocking mechanism 10 is configured so that when the switch button moves from the first manual position or the second manual position to the automatic position, the sliding member drives the lever member to move to the locking position. Close the flip cover hook 151.

The interlocking mechanism 10 of the automatic transfer switch 100 according to the invention is shown more clearly in FIG. 2 , where the automatic transfer switch 100 is in an automatic operating mode and can in particular be controlled automatically by means of a controller. The motor actuates the switching mechanism, and the user does not need to operate the automatic transfer switch 100 with the help of an operating handle. As shown in Figure 2, the interlocking mechanism 10 according to the present invention here includes: a circuit breaker button 11 located on the outer side of the housing 30, which is configured to actuate the opening operation of the contact mechanism. The circuit breaker button 11 here 11 is provided to penetrate the side of the housing 30, that is, it has a button portion located on the outer side of the housing 30 for user interaction or operation and an opening mechanism located on the inner side of the housing 30 that can communicate with the opening mechanism. An actuating part linked with the member 40, where one end of the opening mechanism member 40 is arranged adjacent to the circuit breaker button 11 to actuate the contact in response to the action of the circuit breaker button 11 when the lever member 14 is in the unlocking position. The opening operation of the mechanism. With such a design, once the user presses the circuit breaker button 11 and the circuit breaker button 11 can move freely, the opening mechanism component 40 can be activated to activate the opening operation of the contact mechanism. In the automatic mode of FIG. 2 , it is hoped that the user cannot interfere with the operation of the automatic transfer switch 100 , that is, at this time, the circuit breaker button 11 cannot actuate the action of the opening mechanism component 40 , specifically by making the second position of the lever member 14 It is realized by overlapping the terminal and the circuit breaker button 11.

The interlocking mechanism 10 also includes a switch button 12 located on the outer side of the housing 30, wherein the switch button 12 is configured to move vertically between an automatic position, a first manual position and a second manual position, thereby allowing The user operates the automatic transfer switch 100 in an intuitive and easy-to-learn manner. In this embodiment, in order to realize the interlocking function of the automatic transfer switch 100 in various operating modes, the interlocking mechanism 10 also includes a sliding member 13 located on the inner side of the housing 30 , wherein the sliding member 13 is fixedly connected to the switching button 12 to act together with it, that is, the vertical movement of the switching button 12 will be directly converted into the same vertical movement of the slider 13 . As a preferred embodiment, the sliding member 13 is configured as a plate-shaped member arranged closely against the inner side of the housing 30 , wherein the lower part of the sliding member 13 is provided with a slot 131 operatively engaged with the lower lever member 14 , wherein The slot 131 is designed to have a length in the vertical direction shorter than the stroke length of the switch button 12 vertically moving from the second manual position to the automatic position.

The interlocking mechanism 10 further includes a lever member 14 pivotally mounted to the inner side of the housing 30 , wherein a first end 141 of the lever member 14 is operatively connected to the sliding member 13 and has an extension located on the break circuit. Second end 142 near button 11. Specifically, the lever member 14 is designed to be pivotally mounted to the inner side of the housing 30 via a limit screw 144 serving as a pivot point, wherein the first end 141 and the second end 142 are staggered from each other with respect to the pivot point thereof. Approximately 90 degrees, ie the lever element is designed to be approximately L-shaped. More preferably, the first end 141 of the lever member 14 is designed with a protrusion that can extend into the above-mentioned slot 131, wherein when the switch button 12 moves vertically to the automatic position, the sliding member 13 Lift the protrusion to drive the lever member 14 to rotate clockwise to its locking position. With such a design, this allows the lever member 14 to have a locking position in which the second end 142 overlaps the circuit-breaking button 11 and an unlocking position in which the second end 142 is offset from the circuit-breaking button 11 , wherein the interlocking mechanism 10 is It is configured that when the switch button 12 moves from the first manual position or the second manual position to the automatic position, the slider 13 vertically drives the lever member 14 to pivot from the unlocking position to the locking position. Preferably, in order to realize the reset of the lever member 14, a return spring 16 is also included between the inner side of the housing 30 and the lever member 14, where the return spring 16 is configured to be in the position of the switch button. When 12 is in the first manual position or the second manual position, the lever member 14 is biased back to the unlocking position.

More preferably, the lever member 14 also includes a third end 143 protruding outward from the second end 142, wherein the third end 143 is located near the flip hook 151, so that when the lever member 14 is smoothly When the hour hand rotates to its locked position, the third end 143 engages the flip cover hook 151 to move the flip cover 15 to its locked position.

Next, the working method according to the present utility model will be described with reference to Figures 1-9:

2-3 shows a detailed exploded view of the automatic transfer switch 100 and the interlocking mechanism 10 according to the present invention, in which the switch button 12 is in the automatic position of the vertical highest position and the automatic transfer switch 100 is in the automatic mode. . At this time, in order to avoid the user's misoperation of the automatic transfer switch 100, it is expected that the user cannot activate the opening operation of the contact mechanism by pressing the circuit breaker button 11, and it is also expected to prevent the user from opening the flip cover 15 to take out the operating handle. The automatic transfer switch 100 is manually operated to realize the closing operation. In this regard, the interlocking mechanism 10 achieves this in the following manner:

First, the user is allowed to place the automatic transfer switch 100 into its automatic operating mode by pushing the switch button 12 vertically upward. At this time, the switching button 12 will drive the sliding member 13 fixedly connected with it to move vertically upward. At this time, the L-shaped lever member 14 is pivotably installed to the inner side of the housing 30 by means of the limit screw 144. And it is configured such that the first end 141 in the form of a protrusion inserted into the slot 131 below the sliding member 13 is operatively engaged with the sliding member 13, and this vertical upward movement will drive the lever member 14 Overcoming the elastic force of the return spring 16, the limiting screw 144 is used as the pivot point 144 to rotate in the clockwise direction. As a result, the second end 142 of the lever member 14 located near the circuit breaker button 11 is rotated to a locking position overlapping the circuit breaker button 11 , that is, it is in the middle of the circuit breaker button 11 and the opening mechanism component 40 and blocks the circuit breaker button 11 from moving further. The action of actuating the opening mechanism component 40 inward prevents the user from actuating the opening operation of the contact mechanism by pressing the circuit breaker button 11 . At the same time, the third end 143 of the lever 14 engages the flip hook 151 on the inner side of the housing of the flip cover 15 to move the flip cover 15 to its locked position. This makes it impossible for the user to open the flip cover 15 and take out the operating handle. The automatic transfer switch 100 is manually operated to realize the closing operation.

Preferably, in order to allow the user to intuitively observe the position of the switch button 12 to know the working mode of the automatic transfer switch 100 at this time, as shown in FIG. 3 , the switch button 12 also has a marking line for marking the position. 121, wherein marks respectively corresponding to the automatic position, the first manual position and the second manual position are provided on the outer side of the housing 30, wherein the mark line 121 is configured to match the corresponding mark when the switch button is in the corresponding position. Aligned one by one. Here, the marking line 121 may, for example, be configured as a fluorescent layer or a colored line coated on the body of the switch button 12. At the same time, the marking line 121 is formed on the outer side of the housing 30 by surface printing corresponding to the automatic position, the first manual position and the Marker for second manual position.

Next, when the user needs to perform manual opening and closing operations, the switching button 12 will be in the first manual position or the second manual position. At this time, it is expected that the interlocking mechanism 10 will not affect the normal operation of the circuit breaker button 11. It will not affect the normal opening of the flip cover 15 to access the operating handle to operate the automatic transfer switch 100 to close. In this regard, the interlocking mechanism 10 achieves this in the following manner:

As best shown in Figures 5-6, the user can now place the automatic transfer switch 100 into its first manual operating mode by pushing the toggle button 12 vertically downward. At this time, the switching button 12 will drive the sliding member 13 fixedly connected with it to move vertically downward for a certain distance. At this time, due to the elastic force accumulated by the return spring 16, the L-shaped lever member 14 will move with the limiting screw. 144 is the pivot point 144 which rotates in the counterclockwise direction. As a result, the second end 142 of the lever member 14 located near the circuit breaker button 11 rotates to an unlocking position offset from the circuit breaker button 11 , that is, it is no longer in the middle of the circuit breaker button 11 and the opening mechanism component 40 and allows the circuit breaker button 11 The action of the opening mechanism component 40 is further actuated inward, so that the user can activate the opening operation of the contact mechanism by pressing the circuit breaker button 11 . At the same time, the third end 143 of the lever member 14 moves out of the flip cover hook 151 of the flip cover 15 on the inner side of the housing. This allows the user to freely open the flip cover 15 and take out the operating handle to manually operate the automatic transfer switch 100 to achieve Closing operation. Due to the relationship between the length of the slot 131 in the slider 13 and the stroke length of the switch button 12, the first end of the lever member 14 can remain engaged with the lower part of the slot 131 so as not to hinder the The toggle button 12 moves downward while maintaining operative engagement with the slide 13 .

As best shown in Figures 7-9, the user pushes the toggle button 12 further vertically downward to place the automatic transfer switch 100 into its second manual operating mode. At this time, the switching button 12 will further drive the sliding member 13 fixedly connected with it to move vertically downward for a further distance. At this time, since the elastic force accumulated by the return spring 16 has been basically released, the L-shaped lever member 14 will no longer use the limit screw 144 as the pivot point 144 to further rotate in the counterclockwise direction. As a result, the second end 142 of the lever member 14 located near the circuit breaker button 11 remains in an unlocking position offset from the circuit breaker button 11 , so that the user can activate the opening operation of the contact mechanism by pressing the circuit breaker button 11 . At the same time, the third end 143 of the lever member 14 is still in a disengaged position from the flip hook 151 on the inner side of the housing. This allows the user to freely open the flip cover 15 and take out the operating handle for manual operation. The automatic transfer switch 100 then realizes the closing operation. It should be noted that as the sliding member 13 moves downward at this time, the first end 141 of the lever member 14 will be used as a stop member for the downward movement of the sliding member 13 to define the lower stroke stop of the sliding member 13 and directly Force feedback is delivered to the user.

The operation of the automatic transfer switch and its interlocking mechanism according to the present invention is described above as an example by sequentially moving vertically downward from the automatic position to the first manual position and the second manual position. Those skilled in the art can understand that the user can also move vertically upward from the second manual position to the first manual position and the automatic position to operate the automatic transfer switch and its interlocking mechanism of the present invention. With such a design, the interlocking mechanism 10 according to the present invention ensures the safety of the off button and manual closing operation of the automatic transfer switch without affecting the user's normal operation of the switch push button, which is beneficial to improving the performance of the automatic transfer switch. Operational reliability and versatility. Moreover, the interlocking mechanism according to the present invention requires fewer parts, has low cost and has good reliability.

It should be understood that although this specification is described in terms of various embodiments, not each embodiment only contains an independent technical solution. This description of the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole. , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

The above descriptions are only illustrative embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations made by those skilled in the art without departing from the concept and principles of the present utility model shall fall within the scope of protection of the present utility model.

Claims (10)

1. The utility model provides an automatic change-over's interlocking device, includes the casing of fixed connection to change-over switch base, wherein install two switching mechanism on the change-over switch base, every switching mechanism can drive a set of contact mechanism divide-shut brake, its characterized in that interlocking device still includes:

a trip button located on an outside surface of the housing and configured to actuate a switching operation of the contact mechanism;

a toggle button located on an exterior side of the housing, wherein the toggle button is configured to move vertically between an automatic position, a first manual position, and a second manual position;

a slider positioned on the inner side of the housing, wherein the slider is fixedly connected to the switch button to be actuated therewith;

a lever member pivotally mounted to the inside surface of the housing, wherein a first end of the lever member is operatively connected to the slider and has a second end extending adjacent the trip button, wherein the lever member has a locked position in which the second end overlaps the trip button and an unlocked position in which the second end is displaced from the trip button;

wherein the interlocking mechanism is configured such that when the switch button is actuated from the first manual position or the second manual position to the automatic position, the slider vertically pivots the lever member from the unlocking position to the locking position.

2. The interlock mechanism of claim 1 further comprising a flip pivotally connected to an outer side of the housing, wherein the flip is configured to enclose a handle cavity containing an operating handle of a switching mechanism, wherein the flip has a flip catch insertable into an inner side of the housing to place the flip in a locked position, wherein the interlock mechanism is configured to engage the flip catch when the switching button is actuated from the first manual position or the second manual position to the automatic position, the slider moving the lever member to the locked position.

3. The interlock mechanism of claim 1 further comprising a return spring sandwiched between the housing interior side and the lever member, wherein the return spring is configured to bias the lever member back to the unlocked position when the switch button is in the first manual position or the second manual position.

4. The interlock mechanism of claim 2 wherein said slide is configured as a plate disposed against an inner side of the housing, wherein a lower portion of said slide is provided with a slot in operative engagement with said lever, wherein said slot is designed to have a vertical length shorter than a stroke length of said toggle button from a second manual position to said automatic position.

5. The interlock mechanism of claim 4 wherein the lever member is configured to be pivotally mounted to the inner side of the housing via a limit screw that serves as a pivot point, wherein the first and second ends are offset from each other by approximately 90 degrees about their pivot points.

6. The interlock of claim 5 wherein said first end of said lever member is configured with a boss that extends into said slot, wherein said slider lifts said boss to rotate said lever member clockwise to its locked position when said shift button is actuated vertically to said automatic position.

7. The interlock mechanism of claim 5 wherein said lever member further comprises a third end projecting outwardly from said second end, wherein said third end is positioned adjacent said flip-cap catch such that upon clockwise rotation of said lever member to its locked position, said third end snaps into said flip-cap catch to place the flip in its locked position.

8. An automatic transfer switch, comprising:

the switching switch comprises a switching switch base provided with two switching mechanisms, wherein each switching mechanism can drive a set of contact mechanism to switch on and switch off;

the shell is fixedly connected to the base of the change-over switch, and two operation through holes are formed in the outer side face of the shell so as to allow an operation handle to be inserted into each operation through hole to actuate one change-over mechanism to realize manual opening and closing of the contact mechanism;

further comprising an interlock fixedly mounted to the housing, wherein the interlock is an interlock as claimed in any one of claims 1 to 7.

9. The automatic transfer switch of claim 8, further comprising a trip member located on an interior side of the housing, wherein an end of the trip member is disposed adjacent the trip button to actuate a trip operation of the contact mechanism in response to actuation of the trip button when the lever member is in the unlocked position.

10. The automatic transfer switch of claim 8, wherein the switch button further has a marking line for marking the positions, wherein marks corresponding to the automatic position, the first manual position, and the second manual position, respectively, are provided on an outer side surface of the housing, wherein the marking line is configured to be aligned one by one with the corresponding mark when the switch button is in the corresponding position.