A drawer electric operation double-station interlock mechanism and its usage method

Abstract

The present invention discloses a drawer electric operation double-position interlocking mechanism and its usage method, which relates to the field of interlocking mechanisms. The drawer electric operation double-position interlocking mechanism and its usage method provided by the present invention can block the insertion hole when the circuit breaker is not tripped, avoid misoperation by operators, and improve safety performance.

Description

Technical Field

[0001] The present invention relates to the field of interlocking mechanisms, and particularly to a drawer electric operation double-station interlocking mechanism and a using method thereof. Background Art

[0002] When a draw-out drawer is equipped with an electric operating mechanism in a circuit breaker, it may encounter a situation where it needs to be cranked in or out with a crank. In this case, the circuit breaker should be tripped first, and then the crank should be installed to crank in or out the distribution unit. If the operator makes a wrong operation and directly cranks in or out the distribution unit without tripping the circuit breaker, it may cause the operator to be burned by the electric arc or cause an arc short circuit of the power supply.

[0003] The existing electric distribution units equipped with draw-out drawer circuit breakers do not have protection measures for the above situation, and there are relatively large potential safety hazards. Summary of the Invention

[0004] The purpose of the present invention is: in view of the above problems, the present invention provides a drawer electric operation double-station interlocking mechanism and a using method thereof, which can block the insertion hole when the circuit breaker is not tripped, avoid wrong operations by operators, and improve safety performance.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A drawer electric operation double-station interlocking mechanism includes a housing, an operating shaft, an operating flap, and a guide plate. The surface of the housing is provided with an operating slideway and an insertion hole, and a target button is arranged inside the housing; the operating shaft includes an operating section, a first limiting section, a second limiting section, and a moving section. The moving section is arranged between the first limiting section and the second limiting section. The side of the second limiting section opposite to the cooperation with the moving section is connected to the operating section. The second limiting section can act on the target button. The diameter of the operating section matches the operating slideway and extends out of the housing along the operating slideway; the guide plate is provided with a slideway matching the diameter of the moving section, and a first station positioning portion and a second station positioning portion matching the second limiting section. The slideway is horizontally arranged. The first station positioning portion and the second station positioning portion are respectively arranged at both ends of the slideway and communicate with the slideway to form a guiding portion. The first station positioning portion matches the position where the target button is located. The diameter of the second limiting section is larger than that of the moving section. The first limiting section is restricted in the guiding portion; the operating flap is sleeved on the operating section and restricted by the first limiting section. The operating flap can open or close the insertion hole under the drive of the operating shaft.

[0007] Further, it further includes a return mechanism. The return mechanism includes a support body, a return shaft, and an elastic element. The support body is disposed inside the housing. The return shaft and the elastic element are disposed inside the support body. Both ends of the return shaft respectively extend out of the support body and are movably connected to the support body. A blocking portion that can be restricted to the inner wall of the support body is provided on the return shaft. The elastic element acts on the blocking portion and can make the blocking portion abut against the inner wall of the support body. One end of the return shaft close to the blocking portion is matched with the second limiting section, and the other end is matched with the target button.

[0008] One end of the return shaft that is matched with the second limiting section is disposed at the first station positioning portion. A clamping groove is provided on one side of the return shaft that is matched with the slideway. A clamping block extends from the second limiting section in the direction of the return shaft. When the second limiting section is located at the first station positioning portion, the clamping block and the clamping groove cooperate with each other.

[0009] Due to the adoption of the above technical solution, when the operating shaft is located at the first station positioning portion, the return mechanism can push out the operating shaft, so that the second limiting section cooperates with the first station positioning portion. Since the second limiting section cannot pass through the slideway, the self-locking of the operating shaft is realized. If you want to release the self-locking of the operating shaft, you need to press the operating shaft into the housing. The operating shaft acts on the return shaft, causing the elastic element to contract until the return shaft acts on the target button. At this time, the moving section cooperates with the first station positioning portion to release the self-locking, and the operating shaft can be toggled to make the moving section enter the slideway and move along the slideway.

[0010] At least one end of the return shaft is a non-circular shaft at the mating portion with the support body.

[0011] Due to the adoption of the above technical solution, it can be avoided that it is difficult to align the clamping groove and the clamping block due to the rotation of the return shaft.

[0012] Further, it further includes a support plate. The support plate is disposed inside the housing. A support slideway that is matched with the first limiting section is provided on the support plate. First limiting portions and second limiting portions that can be restricted to the support slideway are respectively provided at both ends of the first limiting section; the support slideway is sleeved on the first limiting section and is disposed between the first limiting portion and the second limiting portion.

[0013] Due to the adoption of the above technical solution, the moving distance of the operating shaft can be limited, and the stability of the mechanism can be improved.

[0014] Further, the second limiting portion is a non-circular shaft.

[0015] Due to the adoption of the above technical solution, it can be avoided that it is difficult to align the clamping groove and the clamping block due to the rotation of the operating shaft.

[0016] Furthermore, when the shifting portion of the return shaft presses against the inner wall of the support body under the action of the elastic element, a moving distance is formed between the return shaft and the target button, and the distance between the first limiting portion and the second limiting portion, the distance between the support plate and the shell, and the distance between the support plate and the guide plate respectively match the moving distance.

[0017] Furthermore, the length of the operating section is greater than the moving distance.

[0018] Furthermore, the length of the supporting slide matches the length of the guide portion, the position of the supporting slide corresponds to the guide portion, an assembly portion extends outwardly from one end of the supporting slide, the second limiting portion is close to the second limiting section, and the shape of the assembly portion matches the shape of the second limiting portion.

[0019] The adoption of the technical solution facilitates the assembly of the support plate and the operating shaft.

[0020] Furthermore, the length of the operating slideway is greater than or equal to the sum of the diameter of the insertion hole and the diameter of the operating section.

[0021] Correspondingly, the present invention also discloses a method for using a drawer electrically operated double-position interlocking mechanism, comprising the following steps:

[0022] Unlocking step: Press the operating shaft into the housing, the first limit portion abuts against the support plate, the second limit portion abuts against the guide plate, and the return shaft acts on the target button under the action of the operating shaft;

[0023] Opening the insertion hole step: the operating shaft is kept in a pressed state, the moving section matches the first station positioning part, the operating shaft is turned, the moving section enters the slideway and moves along the slideway to the second station positioning part, the operating baffle moves with the operating shaft, and the insertion hole is opened;

[0024] Steps for closing the insertion hole: press the operating shaft into the shell to match the movable section with the second station positioning portion, move the operating shaft to make the movable section enter the slide and move along the slide to the first station positioning portion, and the operating baffle re-closes the insertion hole under the drive of the operating shaft, the card block matches the card slot, and the spring acts on the return shaft to push the return shaft out and drive the operating shaft to rebound and reset, so that the second limit section is located at the first station positioning portion.

[0025] Furthermore, in the step of opening the insertion hole, after the insertion hole is opened, the operating shaft is pulled out of the shell so that the second limiting section matches the second station positioning portion to fix the operating shaft.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] 1. The present invention can shield the insertion hole to avoid operator error and improve safety performance.

[0028] 2. The operating shaft of the present invention can be automatically reset.

[0029] 3. The present invention can limit the moving distance of the operating shaft, improving the stability of the mechanism.

[0030] 4. The present invention can restrict the rotation of the operating shaft and the return shaft to ensure that the clamping block can be smoothly inserted into the clamping groove.

[0031] 5. The present invention has a compact structure and is convenient to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural view of the housing of the present invention;

[0033] Figure 2 is a schematic structural view of the operating flap of the present invention closing the insertion hole;

[0034] Figure 3 is a schematic structural view of the operating shaft of the present invention in the pulled-out state;

[0035] Figure 4 is a schematic structural view of the operating shaft of the present invention being pressed into the first working position;

[0036] Figure 5 is a schematic structural view of the operating shaft of the present invention being pulled out at the second working position;

[0037] Figure 6 is a side view of the operating shaft of the present invention.

[0038] Reference numerals in the figures: 1 - housing, 101 - operating slideway, 102 - insertion hole, 2 - operating shaft, 201 - operating section, 202 - first limiting section, 203 - moving section, 204 - second limiting section, 205 - clamping block, 3 - operating flap, 4 - guide plate, 401 - slideway, 402 - first working position positioning portion, 403 - second working position positioning portion, 5 - target button, 6 - return mechanism, 601 - support body, 602 - return shaft, 603 - elastic element, 604 - clamping groove, 7 - support plate, 8 - support slideway, 9 - first limiting portion, 10 - second limiting portion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The present invention will be described in detail below with reference to the accompanying drawings.

[0040] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] Embodiment 1

[0042] A drawer electric operation double-station interlocking mechanism, as Figure 1-6 shown, comprising a housing 1, an operating shaft 2, an operating flap 3 and a guide plate 4. An operating slideway 101 and an insertion hole 102 are provided on the surface of the housing 1, and a target button 5 is provided inside the housing 1; the operating shaft 2 includes an operating section 201, a first limiting section 202, a second limiting section 204 and a moving section 203. The moving section 203 is arranged between the first limiting section 202 and the second limiting section 204. The side of the second limiting section 204 opposite to the cooperation with the moving section 203 is connected to the operating section 201. The second limiting section 204 can act on the target button 5. The diameter of the operating section 201 matches the operating slideway 101 and extends out of the housing 1 along the operating slideway 101; a slideway 401 matching the diameter of the moving section 203, a first station positioning portion 402 and a second station positioning portion 403 matching the second limiting section 204 are provided on the guide plate 4. The slideway 401 is horizontally arranged. The first station positioning portion 402 and the second station positioning portion 403 are respectively arranged at both ends of the slideway 401 and communicate with the slideway 401 to form a guiding portion. The first station positioning portion 402 matches the position where the target button 5 is located. The diameter of the second limiting section 204 is larger than that of the moving section 203. The first limiting section 202 is restricted in the guiding portion; the operating flap 3 is sleeved on the operating section 201 and restricted by the first limiting section 202. The operating flap 3 can open or close the insertion hole 102 under the drive of the operating shaft 2.

[0043] It further includes a return mechanism 6. The return mechanism 6 includes a support body 601, a return shaft 602 and an elastic element 603. The support body 601 is arranged inside the housing 1. The return shaft 602 and the elastic element 603 are arranged inside the support body 601. Both ends of the return shaft 602 respectively extend out of the support body 601 and are movably connected to the support body 601. A gear portion that can be restricted to the inner wall of the support body 601 is provided on the return shaft 602. The elastic element 603 acts on the gear portion and can make the gear portion abut against the inner wall of the support body 601. One end of the return shaft 602 close to the gear portion matches the second limiting section 204, and the other end matches the target button 5. Preferably, the elastic element 603 is a spring.

[0044] One end of the return shaft 602 that matches the second limiting section 204 is arranged at the first-station positioning part 402. A clamping groove 604 is arranged on one side of the return shaft 602 that matches the slideway 401. A clamping block 205 extends from the second limiting section 204 in the direction of the return shaft 602. When the second limiting section 204 is located at the first-station positioning part 402, the clamping block 205 and the clamping groove 604 cooperate with each other. Specifically, when the operating shaft 2 is located at the first-station positioning part 402, the return mechanism 6 can eject the operating shaft 2, so that the second limiting section 204 cooperates with the first-station positioning part 402. Since the second limiting section 204 cannot pass through the slideway 401, the self-locking of the operating shaft 2 is realized. If you want to release the self-locking of the operating shaft 2, you need to press the operating shaft 2 into the housing 1. The operating shaft 2 acts on the return shaft 602, so that the elastic element 603 contracts until the return shaft 602 acts on the target button 5. At this time, the moving section 203 cooperates with the first-station positioning part 402 to release the self-locking, and the operating shaft 2 can be toggled to make the moving section 203 enter the slideway 401 and move along the slideway 401.

[0045] At least one end of the return shaft 602 is a non-circular shaft at the mating part with the support body 601. Specifically, it can avoid the difficulty of aligning the clamping groove 604 and the clamping block 205 due to the rotation of the return shaft 602. In this embodiment, one end of the return shaft 602 close to the target button 5 is a square shaft.

[0046] It further includes a support plate 7. The support plate 7 is arranged in the housing 1. A support slideway 8 that matches the first limiting section 202 is arranged on the support plate 7. First limiting parts 9 and second limiting parts 10 that can be limited in the support slideway 8 are respectively arranged at both ends of the first limiting section 202; the support slideway 8 is sleeved on the first limiting section 202 and is arranged between the first limiting part 9 and the second limiting part 10. Specifically, it can limit the moving distance of the operating shaft 2 and improve the stability of the mechanism.

[0047] The second limiting part 10 is a non-circular shaft. Specifically, it can avoid the difficulty of aligning the clamping groove 604 and the clamping block 205 due to the rotation of the operating shaft 2. In this embodiment, the second limiting part 10 is a square shaft.

[0048] When the gear part of the return shaft 602 abuts against the inner wall of the support body 601 under the action of the elastic element 603, a moving distance is formed between the return shaft 602 and the target button 5. The distance between the first limiting part 9 and the second limiting part 10, the distance between the support plate 7 and the housing 1, and the distance between the support plate 7 and the guide plate 4 respectively match the moving distance.

[0049] The length of the operating section 201 is greater than the moving distance.

[0050] The length of the support slide 8 matches the length of the guide portion, the position of the support slide 8 corresponds to the guide portion, one end of the support slide 8 extends outward with a mounting portion, the second limiting portion 10 is close to the second limiting section 204, and the shape of the mounting portion matches the shape of the second limiting portion 10. Specifically, it is convenient to assemble the support plate 7 with the operating shaft 2.

[0051] The length of the operating slideway 101 is greater than or equal to the sum of the diameter of the insertion hole 102 and the diameter of the operating section 201 .

[0052] In this embodiment, the housing 1 is a removable power distribution unit, the target button 5 is a trip button, the insertion hole 102 is for the crank to be inserted, and the power distribution unit is shaken in or out by turning the crank. In the absence of a trip, the operating shaft 2 is located at the first station, at which time the second limit section 204 is located at the first station positioning portion 402, the block 205 cooperates with the card slot 604, the first limit portion 9 abuts against the operating baffle 3, the second limit portion 10 abuts against the support plate 7, the operating baffle 3 closes the insertion hole 102, and the crank cannot be inserted from the insertion hole 102. Press the operating shaft 2 into the power distribution unit, the first limit portion 9 abuts against the support plate 7, the second limit portion 10 abuts against the guide plate 4, and the return shaft 602 acts on the trip button under the action of the operating shaft 2 to complete the trip. At this time, the movable section 203 matches the first station positioning part 402, and the operating shaft 2 is moved to make the movable section 203 enter the slide 401 and move along the slide 401 to the second station positioning part 403. The operating baffle 3 moves with the operating shaft 2, and the insertion hole 102 is opened. The operating shaft 2 is pulled out of the distribution unit to make the second limit section 204 match the second station positioning part 403, and the operating shaft 2 is fixed. At this time, the crank can be inserted from the insertion hole 102. When the insertion hole 102 needs to be reclosed, the operating shaft 2 is pressed into the distribution unit to match the movable section 203 with the second station positioning portion 403, and the operating shaft 2 is moved to make the movable section 203 enter the slide 401 and move along the slide 401 to the first station positioning portion 402. The operating baffle 3 recloses the insertion hole 102 under the drive of the operating shaft 2. At this time, the block 205 is re-matched with the slot 604, and the spring acts on the return shaft 602 to push the return shaft 602 out and drive the operating shaft 2 to rebound and reset. At this time, the second limit section 204 is located at the first station positioning portion 402.

[0053] Example 2

[0054] A method for using a drawer electric double-position interlocking mechanism, such as Figure 1-6 As shown, it includes the following steps:

[0055] Unlocking steps: Press the operating shaft 2 into the housing 1, the first limit portion 9 abuts against the support plate 7, the second limit portion 10 abuts against the guide plate 4, and the return shaft 602 acts on the target button 5 under the action of the operating shaft 2;

[0056] Step of opening the insertion hole: The operating shaft 2 remains in the pressed state, the moving section 203 is matched with the first station positioning portion 402, the operating shaft 2 is toggled, so that the moving section 203 enters the slideway 401 and moves along the slideway 401 to the second station positioning portion 403, and the operating flap 3 moves with the operating shaft 2 to open the insertion hole 102;

[0057] Step of closing the insertion hole: Press the operating shaft 2 into the housing 1 so that the moving section 203 is matched with the second station positioning portion 403, toggle the operating shaft 2, so that the moving section 203 enters the slideway 401 and moves along the slideway 401 to the first station positioning portion 402, the operating flap 3 is driven by the operating shaft 2 to re-close the insertion hole 102, the locking block 205 is matched with the card slot 604, the spring acts on the return shaft 602, pushes out the return shaft 602, and drives the operating shaft 2 to rebound and reset, so that the second limiting section 204 is located at the first station positioning portion 402.

[0058] In the step of opening the insertion hole, after the insertion hole 102 is opened, pull the operating shaft 2 out of the housing 1 so that the second limiting section 204 is matched with the second station positioning portion 403, and fix the operating shaft 2.

[0059] In this embodiment, the housing 1 is a pull-out type power distribution unit, and the target button 5 is a trip button. When the trip button is pressed and the tripping is completed, the insertion hole 102 can be opened, improving the safety when adjusting the power distribution unit.

[0060] Specific embodiments are applied in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0061] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0062] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and defined, the terms "set", "install", "connected", 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Claims

1. A drawer electric operation double-station interlock mechanism, characterized in that, It includes a housing, an operating shaft, an operating flap and a guide plate. An operating slideway and an insertion hole are provided on the surface of the housing, and a target button is provided inside the housing; the operating shaft includes an operating section, a first limiting section, a second limiting section and a moving section. The moving section is arranged between the first limiting section and the second limiting section. One side of the second limiting section that cooperates with the moving section is connected to the operating section. The second limiting section can act on the target button. The diameter of the operating section matches the operating slideway and extends out of the housing along the operating slideway; the guide plate is provided with a slideway matching the diameter of the moving section, as well as a first working position positioning part and a second working position positioning part matching the second limiting section. The slideway is horizontally arranged. The first working position positioning part and the second working position positioning part are respectively arranged at both ends of the slideway and communicate with the slideway to form a guiding part. The first working position positioning part matches the position where the target button is located. The diameter of the second limiting section is larger than that of the moving section. The first limiting section is restricted in the guiding part; the operating flap is sleeved on the operating section and restricted by the first limiting section. The operating flap can open or close the insertion hole under the drive of the operating shaft; it also includes a return mechanism. The return mechanism includes a support body, a return shaft and an elastic element. The support body is arranged inside the housing. The return shaft and the elastic element are arranged inside the support body. Both ends of the return shaft respectively extend out of the support body and are movably connected to the support body. A blocking part that can be restricted on the inner wall of the support body is provided on the return shaft. The elastic element acts on the blocking part and can make the blocking part abut against the inner wall of the support body. One end of the return shaft close to the blocking part matches the second limiting section, and the other end matches the target button; at least one end of the return shaft where it cooperates with the support body is a non-circular shaft; it also includes a support plate. The support plate is arranged inside the housing. The support plate is provided with a support slideway matching the first limiting section. The two ends of the first limiting section are respectively provided with a first limiting part and a second limiting part that can be restricted in the support slideway; the support slideway is sleeved on the first limiting section and is arranged between the first limiting part and the second limiting part.

2. The drawer electric operation double-station interlocking mechanism according to claim 1, characterized in that, One end of the return shaft that matches the second limiting section is arranged at the first working position positioning part. A clamping groove is provided on one side of the return shaft that matches the slideway. A clamping block extends in the direction of the return shaft from the second limiting section. When the second limiting section is located at the first working position positioning part, the clamping block and the clamping groove cooperate with each other.

3. The drawer electric operation double-station interlocking mechanism according to claim 1, characterized in that, The second limiting part is a non-circular shaft.

4. The drawer electric operation double-station interlock mechanism according to claim 3, characterized in that, When the blocking part of the return shaft abuts against the inner wall of the support body under the action of the elastic element, a moving distance is formed between the return shaft and the target button. The distance between the first limiting part and the second limiting part, the distance between the support plate and the housing, and the distance between the support plate and the guide plate respectively match the moving distance.

5. The drawer electric operation double-position interlocking mechanism according to claim 1, characterized in that, The length of the support slideway matches the length of the guiding part. The position of the support slideway corresponds to the guiding part. One end of the support slideway extends outwards to form an assembly part. The second limiting part is close to the second limiting section. The shape of the assembly part matches the shape of the second limiting part.

6. A method of using a drawer electric operation double-station interlocking mechanism, which is applied to the drawer electric operation double-station interlocking mechanism according to any one of claims 2-5, characterized in that, It includes the following steps: Unlocking steps: Press the operating shaft into the housing, the first limiting portion abuts against the support plate, the second limiting portion abuts against the guide plate, and the return shaft acts on the target button under the action of the operating shaft; Steps for opening the insertion hole: Keep the operating shaft pressed in, the moving section matches the first station positioning portion, toggle the operating shaft to make the moving section enter the slideway and move along the slideway to the second station positioning portion, and the operating flap moves with the operating shaft to open the insertion hole; Steps for closing the insertion hole: Press the operating shaft into the housing to make the moving section match the second station positioning portion, toggle the operating shaft to make the moving section enter the slideway and move along the slideway to the first station positioning portion, the operating flap re-closes the insertion hole driven by the operating shaft, the locking block matches the card slot, the elastic element acts on the return shaft, pushes out the return shaft, and drives the operating shaft to rebound and reset, so that the second limiting section is located at the first station positioning portion.

7. The usage method of the drawer electric operation double-station interlocking mechanism according to claim 6, characterized in that, In the steps for opening the insertion hole, after the insertion hole is opened, pull the operating shaft out of the housing to make the second limiting section match the second station positioning portion, and fix the operating shaft.

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