Indicator device of switching device

Abstract

An indicating device for a switching electrical appliance, which comprises a rotor member and a push rod member arranged coaxially. The rotor member is connected to a reset member, and an indicating mark corresponding to an indicating window is provided on the rotor member. The push rod member cooperates with the main circuit unit of the switching electrical appliance. Driving inclined surfaces are respectively provided on the push rod member and / or the rotor member. When the main circuit unit is closed, it drives the push rod member to move close to the rotor member. The push rod member pushes the rotor member through the driving inclined surface to rotate around the axis of the push rod member against the action of the reset member, so that the rotor member is always located in a plane perpendicular to the push rod member. The switching electrical appliance does not need to provide a rotation space for the rotor member in the axial direction of the push rod member, which can effectively reduce the height of the switching electrical appliance in the moving direction of the push rod member. It not only has the characteristics of compact structure and small volume, but also the rotor member and the push rod member are matched through an inclined driving inclined surface, and the resistance of the reset member acting on the main circuit unit is smaller, which can reduce the adverse effect of the indicating device on the switching electrical appliance.

Description

Technical Field

[0001] The present invention relates to the field of low-voltage electrical appliances, and particularly to an indicating device for a switching electrical appliance. Background Art

[0002] Switching electrical appliances such as molded case circuit breakers are one of the important electrical components in the field of low-voltage electricity. Their main function is to automatically cut off the current when the current exceeds the tripping setting and can be switched on again after the line fault is eliminated. The ways of cutting off the current usually include short-circuit tripping and overload tripping. The on-off indication marks of existing molded case circuit breakers are generally arranged on both sides of the operating handle. When the operating handle controls the on-off of the molded case circuit breaker, the indication marks are driven by the displacement of the operating handle to display the on-off state of the circuit breaker.

[0003] However, if the handle of the circuit breaker is closed, the indication marks will be blocked. Especially for the reclosing type molded case circuit breaker, the on-off state cannot be displayed through the above solution. Although an indicating device can be set at other positions inside the circuit breaker, the existing indicating device not only occupies a large space but also has low reliability. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide an indicating device for a switching electrical appliance with a small volume and high reliability.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An indicating device for a switching electrical appliance, which includes a rotor member and a push rod member arranged coaxially. The rotor member is connected to a reset member. An indication mark corresponding to an indication window is provided on the rotor member. The push rod member cooperates with the main circuit unit of the switching electrical appliance. Driving inclined surfaces are respectively provided on the push rod member and / or the rotor member. When the main circuit unit is closed, it drives the push rod member to move close to the rotor member. The push rod member pushes the rotor member to rotate around the axis of the push rod member by overcoming the action of the reset member through the driving inclined surface.

[0007] Preferably, the rotor member and the push rod member are respectively provided with a sawtooth structure composed of a plurality of protrusions and valleys alternating along their respective circumferences. Driving inclined surfaces are respectively provided on the protrusions of the rotor member and the push rod member. The valleys of the rotor member and the push rod member are respectively used to avoid the protrusions of the other. When the rotor member rotates, it drives its own valley to align with the protrusion of the push rod member, so that the protrusion of the push rod member can be inserted into the valley of the rotor member and block the reverse rotation of the rotor member.

[0008] Preferably, at least one microswitch is provided around the rotor member. A trigger arm extends upward from the rotor member to the microswitch. When the rotor member rotates, it drives the trigger arm to push the microswitch.

[0009] Preferably, it includes an upper shell and a lower shell which are oppositely arranged and connected. The rotor member is pivotally installed in the upper shell. The upper shell is provided with an avoidance window corresponding to the indication window. The push rod member is slidably arranged in the lower shell. The lower shell is provided with a through hole corresponding to the main circuit unit and a guiding mechanism for blocking the rotation of the push rod member. The push rod member passes through the through hole and cooperates with the main circuit unit.

[0010] Preferably, a pivot shaft is arranged in the upper shell. One end of the pivot shaft is fixedly connected to the upper shell, and the other end of the pivot shaft is provided with a screw for fixing a gasket. The reset member and the middle part of the rotor member are respectively sleeved on the pivot shaft and limited by the gasket.

[0011] Preferably, the push rod member includes a push plate portion and a push rod portion connected to one side of the push plate portion. The other side of the push plate portion is connected to the push rod member through a pressing member. The push rod portion passes through the through hole at the bottom surface of the lower shell. The pressing member is a compression spring. One end of the pressing member is limited by the gasket in the upper shell. A spring groove for limiting the other end of the pressing member is arranged in the middle of the push rod member. The pressing member pushes the push plate portion to abut against the bottom surface of the lower shell for limitation.

[0012] Preferably, the rotor member is pivotally installed in the upper shell. At the position corresponding to the concave valley on the side of the rotor member, a limiting groove is formed by recessing towards the center. The upper shell is provided with a limiting shaft inserted into the limiting groove for limitation, and the distance from the limiting shaft to the center of the rotor member is less than the distance from the convex of the rotor member to the center of the rotor member.

[0013] Preferably, the reset member is a torsion spring. The torsion spring is sleeved on the pivot shaft. One end of the reset member abuts against the side surface of the limiting shaft for limitation. A fixing column for limiting the other end of the reset member is arranged on the rotor member.

[0014] Preferably, the guiding mechanism is a guiding groove arranged on the side wall of the lower shell. The push rod member protrudes outward to form a guiding block inserted into the guiding groove for sliding fit. The length of the guiding groove is arranged parallel to the axial direction of the push rod member.

[0015] Preferably, it includes an upper shell and a lower shell which are oppositely arranged. The rotor member is installed in the upper shell, and the micro switch is installed on the outer side of the lower shell. The lower shell is respectively provided with two clamping plates at both ends of each micro switch, and the lower shell is respectively provided with two positioning columns between the two clamping plates. The length of the positioning column is less than the length of the clamping plate, and each two opposite clamping plates respectively protrude inward at the end far from the lower shell to form a limiting boss. The side surface of the micro switch is provided with a positioning hole for limiting and cooperating with the positioning column. The side surface of the micro switch far from the upper shell is limited by the limiting boss; Transverse grooves for avoiding the trigger arms are respectively arranged on the side walls on both sides of the upper shell. The lower shell is respectively provided with arc-shaped baffles at positions corresponding to the transverse grooves. The baffles are inserted into the transverse grooves and arranged at intervals with the transverse grooves after the lower shell and the upper shell are assembled. The trigger arm passes through between the baffle and the transverse groove and extends to the outside of the upper shell to cooperate with the upper part of the micro switch.

[0016] Preferably, two center-symmetric driven arms are provided on both sides of the rotor member. Upper relief grooves are respectively formed at intervals between the two ends of the two driven arms. The length direction of the driven arm is parallel to the axial direction of the push rod member, and the length of the driven arm gradually increases or decreases along the circumferential direction of the push rod member to form an inclined driven inclined surface. The driven arm and the upper relief groove respectively constitute the protrusion and the concave valley of the rotor member, and the driven inclined surface constitutes the driving inclined surface of the rotor member. The push rod member includes a push plate portion and a push rod portion connected to one side of the push plate portion. On the other side of the push plate portion, two pushing arms corresponding to the two driven arms one by one are provided. The length direction of the pushing arm is parallel to the axial direction of the push rod member, and the lengths of the two pushing arms gradually increase or decrease along the circumferential direction of the push rod member to form a pushing inclined surface. Lower relief grooves are respectively formed at intervals between the two ends of the two pushing arms. The pushing arm and the lower relief groove respectively constitute the protrusion and the concave valley of the push rod member, and the pushing inclined surface constitutes the driving inclined surface of the push rod member.

[0017] Preferably, the switching electrical apparatus is a circuit breaker. The main circuit unit includes a moving contact, a static contact, and a contact support for fixing the moving contact. The push rod member cooperates with the contact support. When the circuit breaker is closed, the contact support drives the moving contact to contact the static contact, and at the same time drives the push rod member to move towards the rotor member. When the circuit breaker is opened, the contact support drives the moving contact to separate from the static contact, and at the same time drives the push rod member to move away from the rotor member.

[0018] In the indicating device of the switching electrical apparatus of the present invention, when the rotor member rotates around the axis of the push rod member, the rotor member is always located in a plane perpendicular to the push rod member. The switching electrical apparatus does not need to provide a rotating space for the rotor member in the axial direction of the push rod member, which can effectively reduce the height of the switching electrical apparatus in the moving direction of the push rod member. It not only has the characteristics of compact structure and small volume, but also the cooperation between the rotor member and the push rod member through the inclined driving inclined surface results in less resistance of the reset member acting on the main circuit unit, and can reduce the adverse influence of the indicating device on the switching electrical apparatus.

[0019] In addition, after the indicating device is assembled into an integral module and installed in the switching electrical apparatus, it is convenient and reliable to use; and it is also equipped with a micro switch for transmitting the closing and opening electrical signals, which can simultaneously realize on-site indication of closing and opening and transmission of closing and opening electrical signals, and can meet the closing and opening indication function without making too many improvements to the existing switching electrical apparatus. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the switching electrical apparatus according to an embodiment of the present invention;

[0021] Figure 2 is the indicating device of the switching electrical apparatus according to an embodiment of the present invention in the open state;

[0022] Figure 3 is an embodiment of the present invention Figure 2 cross-sectional view;

[0023] Figure 4 is the indicating device of the switching electrical appliance in the closing state of the embodiment of the present invention

[0024] Figure 5 is the embodiment of the present invention Figure 4 cross-sectional view

[0025] Figure 6 is the assembly schematic diagram of the rotor mechanism and the push rod mechanism of the embodiment of the present invention

[0026] Figure 7 is the structural schematic diagram of the rotor mechanism of the embodiment of the present invention

[0027] Figure 8 is the exploded view of the rotor mechanism of the embodiment of the present invention

[0028] Figure 9 is the structural schematic diagram of the push rod mechanism of the embodiment of the present invention

[0029] Figure 10 is the exploded view of the push rod mechanism of the embodiment of the present invention Detailed implementation manners

[0030] The following combines the Figures 1 to 10 given embodiments to further illustrate the detailed implementation manners of the indicating device of the switching electrical appliance of the present invention. The indicating device of the switching electrical appliance of the present invention is not limited to the description of the following embodiments.

[0031] As Figures 1-5 shown, the indicating device of the switching electrical appliance of the present invention includes a coaxially arranged rotor member 110 and a push rod member 210, and a reset member 120 connected to the rotor member 110. An indicating mark 111 corresponding to an indicating window 310 is provided on the rotor member 110. The push rod member 210 cooperates with the main circuit unit of the switching electrical appliance. A driving slope 3 is provided on the push rod member 210 and / or the rotor member 110. The driving slope 3 is inclined with respect to the moving direction of the push rod member 210. When the main circuit unit is closed, it drives the push rod member 210 to move closer to the rotor member 110. The push rod member 210 pushes the rotor member 110 to rotate about the axis of the push rod member 210 by overcoming the action of the reset member 120 through the driving slope 3. When the rotor member 110 rotates, it drives the indicating mark 111 corresponding to "closing" to move to the indicating window 310. When the main circuit unit is opened, the reset member 120 drives the rotor member 110 to reset, and the indicating mark 111 corresponding to "opening" moves to the indicating window 310.

[0032] For the indicating device of the switching electrical apparatus of the present invention, when the rotor member 110 rotates around the axis of the push rod member 210, the rotor member 110 is always located in a plane perpendicular to the push rod member 210. The switching electrical apparatus does not need to provide a rotating space for the rotor member 110 in the axial direction of the push rod member 210, which can effectively reduce the height of the switching electrical apparatus in the moving direction of the push rod member 210. It not only has the characteristics of compact structure and small volume, but also the rotor member 110 and the push rod member 210 are matched by the inclined driving slope 3, and the resistance of the reset member 120 acting on the main circuit unit is smaller, which can reduce the adverse influence of the indicating device on the switching electrical apparatus.

[0033] Furthermore, at least one microswitch 220 is provided around the rotor member 110. The rotor member 110 extends radially to form a trigger arm 160 for triggering the microswitch 220. When the rotor member 110 rotates, the trigger arm 160 is driven to swing above the microswitch 220, and the microswitch 220 is driven to open and close by the trigger arm 160.

[0034] As Figure 1 shown, the switching electrical apparatus in this embodiment is a circuit breaker. The circuit breaker includes a housing 300 provided with an indicating window 310, a main circuit unit and the indicating device arranged in the housing 300. The main circuit unit includes a moving contact and a static contact respectively connected to the circuit, and a contact support 320 for fixing the moving contact. When the contact support 320 drives the moving contact to contact the static contact, it closes the circuit; when the moving contact and the static contact are separated, it opens the circuit. The push rod member 210 in this embodiment is matched with the contact support 320.

[0035] When the circuit breaker closes, when the contact support 320 drives the moving contact to contact the static contact, at the same time, the contact support 320 can drive the push rod member 210 to push the rotor member 110 to rotate, so that the part of the indicating mark 111 on the rotor member 110 corresponding to "closing" rotates into the indicating window 310;

[0036] When the circuit breaker opens, when the contact support 320 drives the moving contact to separate from the static contact, the contact support 320 resets, and the rotor member 110 rotates under the action of the reset member 120, so that the part of the indicating mark 111 on the rotor member 110 corresponding to "opening" rotates into the indicating window 310;

[0037] It can be understood that the push rod member 210 can also be matched with the moving contact or other mechanisms of the main circuit unit. The push rod member 210 can also act as a pull rod. When opening the circuit, the contact support 320 drives the pull rod away from the rotor member 110. The indicating mark 111 can distinguish "closing" and "opening" by means of words, colors, patterns, etc., which all fall within the protection scope of the present invention.

[0038] Refer to Figure 6, the indicating device of the switching device in this embodiment includes a rotor mechanism 100 provided with a rotor member 110 and a push rod mechanism 200 provided with a push rod member 210. After the rotor mechanism 100 and the push rod mechanism 200 are each assembled into one body, the rotor mechanism 100 is fastened on the push rod mechanism 200 and fixed.

[0039] Refer to Figures 7-8 , the rotor mechanism 100 includes an upper shell 130, and a pivot 131, a rotor member 110 and a reset member 120 respectively arranged in the upper shell 130. One end of the pivot 131 is fixedly connected to the upper shell 130, and a screw 150 for fixing a gasket 140 is provided at the other end of the pivot 131. The reset member 120 and the rotor member 110 are limited by the gasket 140 to rotate on the pivot 131. The driving slope 3 of the rotor member 110 is arranged around the reset member 120. The upper shell 130 is provided with an avoidance window 132 corresponding to the indicating window 310. The avoidance window 132 exposes the indicating mark 111 on the rotor member 110, so that the indicating window 310 on the breaker housing 300 can directly see the indicating mark 111 on the rotor member 110 in the upper shell 130.

[0040] Refer to Figures 9-10 , the push rod mechanism 200 includes a lower shell 230 arranged opposite to the upper shell 130, and a push rod member 210, a pressing member 240 and a guiding mechanism respectively arranged in the lower shell 230.

[0041] The guiding mechanism circumferentially limits the push rod member 210 to prevent the push rod member 210 from rotating and make the push rod member 210 move along its own axial direction. The pressing member 240 is a compression spring. One end of the pressing member 240 is sleeved on the screw 150 and abuts against the gasket 140. A spring groove 214 for limiting the other end of the pressing member 240 is provided in the middle of the push rod member 210. The pressing member 240 pushes the push rod member 210 towards the main circuit unit direction, so that the push rod member 210 is limited by the lower shell 230. The driving slope 3 of the push rod member 210 is arranged around the pressing member 240. The driving slope 3 of the rotor member 110 is arranged around the reset member 120, and the driving slope 3 of the push rod member 210 is arranged around the pressing member 240, which can respectively leave space for the reset member 120 and the pressing member 240, and has the characteristics of compact structure and small volume.

[0042] After the rotor mechanism 100 and the push rod mechanism 200 are assembled respectively, the clamping groove 133 of the upper shell 130 is fixed to the buckle 233 of the lower shell 230, so that the rotor mechanism 100 and the push rod mechanism 200 are assembled into one body, and then they are installed in the circuit breaker housing 300 together, which has the characteristic of being convenient for assembly. Of course, the push rod member 210 and the rotor member 110 can also be directly installed in the circuit breaker housing 300. In addition, the pressing member 240 presses the push rod member 210 tightly in the lower shell 230, which can not only ensure the reliable limit of the push rod member 210, but also push the push rod member 210 in the direction of the main circuit unit, and can also accelerate the reset of the push rod member 210. Of course, the pressing member 240 can also be not provided. Driven by the reset member 120, the rotor member 110 can also push the push rod member 210 to be limited and reset through the driving inclined surface 3, which all belong to the protection scope of the present invention.

[0043] Refer to Figure 8 、 10 , the rotor member 110 and the push rod member 210 of this embodiment are respectively in a cylindrical structure. The rotor member 110 and the push rod member 210 are respectively provided with a sawtooth structure composed of a plurality of protrusions 1 and valleys 2 alternating along their respective circumferences. The protrusions 1 of the rotor member 110 and the push rod member 210 are respectively provided with driving inclined surfaces 3. The valleys 2 of the rotor member 110 and the push rod member 210 are respectively used to avoid the protrusions 1 of the other. When the rotor member 110 rotates, it drives its own valley 2 to align with the protrusion 1 of the push rod member 210, so that the protrusion 1 of the push rod member 210 can be inserted into the valley 2 of the rotor member 110 and block the reverse rotation of the rotor member 110.

[0044] Specifically, two symmetrically arranged driven arms 1a are provided on both sides of the rotor member 110. Upper relief grooves 2a are respectively formed at intervals between the two ends of the two driven arms 1a. The length direction of the driven arm 1a is parallel to the axial direction of the push rod member 210, and the length of the driven arm 1a gradually increases or decreases along the circumference of the push rod member 210 to form an inclined driven inclined surface 3a. The driven arm 1a and the upper relief groove 2a respectively constitute the protrusion 1 and the valley 2 of the rotor member 110, and the driven inclined surface 3a constitutes the driving inclined surface 3 of the rotor member 110;

[0045] The push rod member 210 includes a push plate portion 211 and a push rod portion 212 connected to one side of the push plate portion 211. The middle part of the other side of the push plate portion 211 is connected to the push rod member 210 through a pressing member 240. And the push plate portion 211 is provided with two pushing arms 1b corresponding to the two driven arms 1a one by one. The length direction of the pushing arm 1b is parallel to the axial direction of the push rod member 210, and the lengths of the two pushing arms 1b gradually increase or decrease along the circumference of the push rod member 210 to form a pushing inclined surface 3b. Lower relief grooves 2b are respectively formed at intervals between the two ends of the two pushing arms 1b. The pushing arm 1b and the lower relief groove 2b respectively constitute the protrusion 1 and the valley 2 of the push rod member 210, and the pushing inclined surface 3b constitutes the driving inclined surface 3 of the push rod member 210;

[0046] The pressing member 240 is a compression spring. One end of the pressing member 240 is limited by a gasket 140 inside the upper shell 130. A spring groove 214 for limiting the other end of the pressing member 240 is provided in the middle of the push rod member 210. The pressing member 240 pushes the push plate portion 211 to abut against the bottom surface of the lower shell 230 for limitation. The driving inclined surface 3 of the push rod member 210 is arranged around the push plate portion 211.

[0047] In this embodiment, the number of the driving arms 1b and the driven arms 1a on the rotor member 110 and the push rod member 210 is two each. At least two and centrosymmetric can ensure uniform force on both sides, maintain balance to prevent skew and jamming, and improve the service life. It can be understood that only setting one of the driven inclined surface 3a and the driving inclined surface 3b can also achieve rotation. In addition, the number of the driving arms 1b and the driven arms 1a can also be one each, as long as it can push the rotor member 110 to rotate, or the number of the driving arms 1b and the driven arms 1a is more than three each. When there are more than three, they are evenly distributed in the circumferential direction, and the balance can also be improved.

[0048] The upper relief groove 2a and the lower relief groove 2b in this embodiment are both in a U-shaped structure. Of course, the upper relief groove 2a and the lower relief groove 2b can also be in other shapes, but at least one side wall can block the rotor member 110 from rotating back, ensuring that the corresponding indication mark 111 is located within the indication window 310.

[0049] Figure 3 Shows the position after the circuit breaker is tripped. Figure 5 Shows the position after the circuit breaker is closed. The movement process of the rotor member 110 and the push rod member 210 is as follows:

[0050] The rotor member 110 is from Figure 3 to Figure 5 The movement process corresponds to the closing process of the circuit breaker. This process is completed by the contact support 320 overcoming the action of the pressing member 240 to drive the push rod member 210 close to the rotor member 110. During the process of the push rod member 210 moving close to the rotor member 110, the driving inclined surface 3b of the push rod member 210 pushes the driven inclined surface 3a at the end of the driven arm 1a to rotate towards the lower relief groove 2b on one side. When it rotates to the position shown in Figure 5 , the end of the driven arm 1a is inserted into the lower relief groove 2b, and the side of the driven arm 1a is limited by the lower relief groove 2b. The word "closed" representing closing is located within the indication window 310.

[0051] The rotor member 110 is from Figure 5 to Figure 3The movement process corresponds to the opening process of the circuit breaker. In this process, the contact support 320 is reset, and the push rod 210 is close to the contact support 320 and away from the rotor 110 under the action of the pressing member 240, so that the lower clearance groove 2b is away from the passive arm 1a. After the side of the passive arm 1a loses the limit of the lower clearance groove 2b, the rotor 110 is reset to the reset member 120. Figure 3 The word “off” representing the off state is located in the indication window 310 .

[0052] See also Figures 7-8 The rotor member 110 is provided with a limiting groove 112 recessed toward the center of the circle on the side surface between the two ends of the two driven arms 1a, and the side of the rotor member 110 is recessed toward the center corresponding to the position of the valley 2 to form the limiting groove 112. The upper shell 130 is provided with a limiting shaft 134 inserted into the limiting groove 112 for limiting position on one side of the pivot 131, and the distance from the limiting shaft 134 to the center of the rotor member 110 is smaller than the distance from the protrusion 1 of the rotor member 110 to the center of the rotor member 110. The limiting shaft 134 is used to block the two circumferentially opposite side walls of the limiting groove 112 when the rotor member 110 rotates. When the pivot hole 1100 of the rotor component 110 is sleeved on the pivot shaft 131, the limiting groove 112 is sleeved into the corresponding limiting shaft 134. The limiting groove 112 can effectively utilize the space near the valley 2 on the sawtooth structure, so that when the rotor component 110 rotates, the two opposite side walls of the limiting groove 112 are driven to approach or move away from the limiting shaft 134 respectively, and the limiting shaft 134 blocks the two opposite side walls of the limiting groove 112 to limit the rotation angle of the rotor component 110.

[0053] Furthermore, the rotor component 110 is provided with a fixing column 113 on the inner side of one of the passive arms 1a, one end of the reset member 120 abuts against the side of the fixing column 113, and the other end of the reset member 120 abuts against the side of the limiting shaft 134 in the upper shell 130. The limiting column can not only limit the rotation angle of the rotor component 110, but also play a role in fixing the reset member 120. Of course, the rotor component 110 can also replace the fixing column 113 to limit the end of the reset member 120 by other structures, such as the reset member 120 can also directly abut against the side of the passive arm 1a, or the side of the passive arm 1a is provided with a groove for connecting the reset member 120, all of which belong to the protection scope of the present invention.

[0054] See also Figures 9-10, the guiding mechanism is a guiding groove 251 provided on the side wall of the lower case 230. A guiding block 252 which is inserted into the guiding groove 251 for sliding fit extends outward from the side surface of the pushing arm 1b of the push rod member 210. The length of the guiding groove 251 is arranged parallel to the axial direction of the push rod member 210. By inserting the guiding block 252 into the guiding groove 251 for sliding fit, the rotation of the push rod member 210 can be prevented and the movement of the push rod member 210 can be guided. Of course, the guiding block 252 can also be arranged at other positions of the push rod member 210, and the positions of the guiding groove 251 and the guiding block 252 can also be swapped, which all fall within the protection scope of the present invention.

[0055] Further, it includes micro switches 220 oppositely arranged on both sides of the lower case 230. Fan-shaped trigger arms 160 extending radially are respectively formed on the outer side surfaces of the two driven arms 1a of the rotor member 110. By pressing the corresponding micro switches 220 to open and close through the trigger arms 160, two clamping plates 231 are respectively provided at both ends of each micro switch 220 corresponding to the lower case 230, and two positioning columns 232 are respectively provided between the two clamping plates 231 corresponding to the lower case 230. The length of the positioning column 232 is less than the length of the clamping plate 231, and two opposite clamping plates 231 respectively bulge inward at the end far from the lower case 230 to form limiting bosses 234. A positioning hole 221 which is in limiting fit with the positioning column 232 is provided on the side surface of the micro switch 220, and the side surface of the micro switch 220 far from the upper case 130 is limited by the limiting boss 234. The micro switch 220 can simultaneously realize on-site indication of opening and closing and transmission of opening and closing electrical signals, and can meet the opening and closing indication function without making too many improvements to the existing switch electrical appliances.

[0056] In this embodiment, the number of the micro switches 220 is two, corresponding to the number of the driven arms 1a. One of the micro switches 220 can be used to provide electrical signals for opening and closing, which is convenient for prompting the working state of the circuit breaker on-site or remotely. The other micro switch 220 can be connected to an alarm unit or can be reserved for connecting other devices. In addition, the two micro switches 220 in this embodiment are arranged symmetrically left and right, and only one of the two micro switches 220 can be closed simultaneously by the two trigger arms 160. The two micro switches 220 can also be arranged centrosymmetrically, and then the two trigger arms 160 can close the two micro switches 220 simultaneously. In addition, only one or more than three micro switches 220 can also be provided, and the number of the trigger arms 160 can be adjusted accordingly, or one trigger arm 160 can cooperate with multiple micro switches 220, which all fall within the protection scope of the present invention.

[0057] Further, transverse grooves 135 for avoiding the trigger arms 160 are respectively provided on the side walls on both sides of the upper shell 130. Arc-shaped baffles 235 are respectively provided at positions corresponding to the transverse grooves 135 on the lower shell 230. After the lower shell 230 and the upper shell 130 are assembled, the baffles 235 are inserted into the transverse grooves 135 and are arranged at intervals from the transverse grooves 135. The trigger arms 160 pass through between the baffles 235 and the transverse grooves 135 and extend above the corresponding micro switches 220 for cooperation. When the trigger arms 160 rotate, the two sides are respectively in sliding cooperation with the baffles 235 and the transverse grooves 135, which can prevent the reaction force of the micro switches 220 from tilting the rotor member 220. Of course, the baffles 235 can also only serve to block the internal mechanism without sliding cooperation. In addition, by blocking the trigger arms 160 with the two opposite side walls of the transverse grooves 135, the limiting shaft 134 can also be replaced to play a role in limiting the rotation angle of the rotor member 110.

[0058] The assembly process of the rotor mechanism 100 is as follows:

[0059] The rotor member 110 and the reset member 120 of the torsion spring structure are sequentially sleeved around the pivot shaft 131. One end of the gasket 140 abuts against the end face of the pivot shaft 131. The screw 150 passes through the gasket 140 and is connected to the screw hole on the end face of the pivot shaft 131 to fix the gasket 140 on the end face of the pivot shaft 131. The side of the gasket 140 close to the pivot shaft 131 limits the rotor member 110 and the reset member 120 on the pivot shaft 131, and the other side of the gasket 140 is used to cooperate with the pressing member 240 of the push rod mechanism 200;

[0060] After the reset member 120 and the rotor member 110 are respectively sleeved on the pivot shaft 131, the limiting groove 112 on the rotor member 110 is sleeved on the corresponding limiting shaft 134. One end of the reset member 120 abuts against the side of the limiting shaft 134, and the other end abuts against the side of the fixed column 113. The reset member 120 pushes the rotor member 110 so that one side wall of the limiting groove 112 abuts against the limiting shaft 134 to maintain balance, and the other side wall of the limiting groove 112 opposite to this side is spaced from the limiting shaft 134 to ensure that the rotor member 110 can rotate.

[0061] The assembly process of the push rod mechanism 200 is as follows:

[0062] Align the guide blocks 252 on the outer sides of the two pushing arms 1b of the push rod member 210 with the guide grooves 251 of the guide mechanism. Then, pass the push rod portion 212 of the push rod member 210 through the through hole 236 on the bottom surface of the lower shell 230. At the same time, the guide blocks 252 are also inserted into the corresponding guide grooves 251 to prevent the push rod member 210 from rotating. Then, insert the bottom of the pressing member 240 into the spring groove 214 on one side of the push plate portion 211, and respectively assemble the two micro switches 220 between the two pairs of clamping plates 231 on both sides of the lower shell 230.

[0063] Finally, align the gasket 140 of the rotor mechanism 100 with the top of the pressing member 240, press the upper shell 140 down on the lower shell 230, so that the grooves 133 on both sides of the upper shell 140 are stuck on the buckles 233 on both sides of the lower shell 230, and the gasket 140 of the rotor mechanism 100 is pressed on the top of the pressing member 240, and the pressing member 240 pushes the push plate portion 211 to the upper limit position of the bottom surface of the lower shell 230 corresponding to the through hole 236.

[0064] like Figures 2-3 As shown, when the circuit breaker is in the closed position, the circuit breaker contact support 320 has no force acting on the push rod 210, the push rod 210 is in a free state, one end of the pressing member 240 acts on the gasket 140, and the other end of the pressing member 240 acts on the push plate portion 212 of the push rod 210, and the side surface of the push plate portion 211 away from the pressing member 240 is tightly fitted with the bottom surface of the lower shell 230. At this time, the push rod portion 212 can contact the contact support 320, or a certain gap can be left.

[0065] At the same time, the rotor member 110 stays at the position under the action of the torsion spring 15 of the reset member 120. Figure 7 The free position is shown, and the pushing inclined surface 3 b of the push rod member 210 is tightly fitted with the driven inclined surface 3 a of the rotor member 110 .

[0066] At this time, the indication mark 111 representing “closed” on the rotor member 110 is presented in the indication window 310 of the circuit breaker housing 300 , indicating that the circuit breaker is in the closed position.

[0067] like Figures 4-5 As shown, when the circuit breaker changes from closing to opening, the contact support 320 pushes the arc surface 215 at the bottom of the push rod 210, so that the push rod 210 tends to move axially upward in a straight line. When the force is sufficient to overcome the friction between the reset member 120, the pressing member 240, the pushing inclined surface 3b and the passive inclined surface 3a, the push rod 210 moves upward and pushes the passive inclined surface 3a through the pushing inclined surface 3b, so that the rotor member 110 rotates clockwise, driving the passive arm 1a provided with the passive inclined surface 3a on the rotor member 110 to insert into the lower yielding groove 2b, until the circuit breaker is in the opening position, the contact support 320 stops moving, the passive arm 1a is blocked by the side wall of the lower yielding groove 2b, the rotor member 110 rotates to the right position, and the reset member 120 cannot drive the rotor member 110 to reset. At this time, the indication mark 111 representing “open” on the rotor member 110 is presented in the indication window 310 of the circuit breaker housing 300 , indicating that the circuit breaker is in the open position.

[0068] The above content is a further detailed description of the present invention creation in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention creation is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention creation pertains, without departing from the concept of the present invention creation, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present invention creation.

Claims

1. An indicating device for a switching electrical apparatus, characterized in that: it includes a rotor member (110) and a push rod member (210) arranged coaxially. The rotor member (110) is connected to a reset member (120). An indicating mark (111) corresponding to an indicating window (310) is provided on the rotor member (110). The push rod member (210) cooperates with the main circuit unit of the switching electrical apparatus. Driving slopes (3) are respectively provided on the push rod member (210) and / or the rotor member (110). When the main circuit unit is closed, it drives the push rod member (210) to move closer to the rotor member (110). The push rod member (210) pushes the rotor member (110) through the driving slope (3) to rotate about the axis of the push rod member (210) against the action of the reset member (120).

2. The indicating device for a switching electrical apparatus according to claim 1, characterized in that: the rotor member (110) and the push rod member (210) are respectively provided with a sawtooth structure composed of a plurality of protrusions (1) and valleys (2) alternating along their respective circumferences. Driving slopes (3) are respectively provided on the protrusions (1) of the rotor member (110) and the push rod member (210). The valleys (2) of the rotor member (110) and the push rod member (210) are respectively used to avoid the protrusions (1) of the other. When the rotor member (110) rotates, it drives its own valley (2) to align with the protrusion (1) of the push rod member (210), so that the protrusion (1) of the push rod member (210) can be inserted into the valley (2) of the rotor member (110) and block the reverse rotation of the rotor member (110).

3. The indicating device for a switching electrical apparatus according to claim 1, characterized in that: at least one microswitch (220) is provided around the rotor member (110). The rotor member (110) extends upward to form a trigger arm (160) above the microswitch (220). When the rotor member (110) rotates, it drives the trigger arm (160) to push the microswitch (220).

4. The indicating device for a switching electrical apparatus according to claim 1, characterized in that: it includes an upper shell (130) and a lower shell (230) which are oppositely arranged and connected. The rotor member (110) is pivotally installed in the upper shell (130). The upper shell (130) is provided with an avoidance window (132) corresponding to the indicating window (310). The push rod member (210) is slidably arranged in the lower shell (230). The lower shell (230) is provided with a through hole (236) corresponding to the main circuit unit, and a guiding mechanism for blocking the rotation of the push rod member (210). The push rod member (210) passes through the through hole (236) to cooperate with the main circuit unit.

5. The indicating device for a switching electrical apparatus according to claim 4, characterized in that: a pivot shaft (131) is provided in the upper shell (130). One end of the pivot shaft (131) is fixedly connected to the upper shell (130). The other end of the pivot shaft (131) is provided with a screw (150) for fixing a gasket (140). The middle parts of the reset member (120) and the rotor member (110) are respectively sleeved on the pivot shaft (131) and then limited by the gasket (140).

6. The indicating device for a switching electrical apparatus according to claim 4, characterized in that: The push rod member (210) includes a push plate portion (211) and a push rod portion (212) connected to one side of the push plate portion (211). The other side of the push plate portion (211) is connected to the push rod member (210) through a pressing member (240). The push rod portion (212) passes through a through hole (236) in the bottom surface of the lower case (230). The pressing member (240) is a compression spring. One end of the pressing member (240) is limited by a gasket (140) inside the upper case (130). A spring groove (214) for limiting the other end of the pressing member (240) is provided in the middle of the push rod member (210). The pressing member (240) pushes the push plate portion (211) against the bottom surface of the lower case (230) for limitation.

7. The indicating device of the switching electrical apparatus according to claim 2, characterized in that: The rotor member is pivotally mounted inside the upper case (130). A limiting groove (112) is formed by the side of the rotor member (110) being recessed towards the center corresponding to the position of the concave valley (2). The upper case (130) is provided with a limiting shaft (134) inserted into the limiting groove (112) for limitation, and the distance from the limiting shaft (134) to the center of the rotor member (110) is less than the distance from the protrusion (1) of the rotor member (110) to the center of the rotor member (110).

8. The indicating device of the switching electrical apparatus according to claim 7, characterized in that: The reset member (120) is a torsion spring. The reset member (120) is sleeved on the pivot shaft (131). One end of the reset member (140) abuts against the side surface of the limiting shaft (134) for limitation. A fixing post (113) for limiting the other end of the reset member (140) is provided on the rotor member (110).

9. The indicating device of the switching electrical apparatus according to claim 4, characterized in that: The guiding mechanism is a guiding groove (251) provided on the side wall of the lower case (230). The push rod member (210) protrudes outward to form a guiding block (252) inserted into the guiding groove (251) for sliding fit. The length of the guiding groove (251) is arranged parallel to the axial direction of the push rod member (210).

10. The indicating device of the switching electrical apparatus according to claim 2, characterized in that: It includes an upper shell (130) and a lower shell (230) which are oppositely arranged. A rotor member (110) is installed inside the upper shell (130), and a microswitch (220) is installed outside the lower shell (230). The lower shell (230) is respectively provided with two clamping plates (231) at both ends of each microswitch (220), and the lower shell (230) is respectively provided with two positioning columns (232) between the two clamping plates (231). The length of the positioning column (232) is less than the length of the clamping plate (231), and each two opposite clamping plates (231) respectively bulge inward at the end far from the lower shell (230) to form a limiting boss (234). The side surface of the microswitch (220) is provided with a positioning hole (221) which is in limit fit with the positioning column (232), and the side surface of the microswitch (220) far from the upper shell (130) is limited by the limiting boss (234); Transverse grooves (135) for avoiding the trigger arm (160) are respectively provided on the side walls of both sides of the upper shell (130), and arc-shaped baffles (235) are respectively provided at the positions of the lower shell (230) corresponding to the transverse grooves (135). After the lower shell (230) and the upper shell (130) are assembled, the baffles (235) are inserted into the transverse grooves (135) and are arranged at intervals with the transverse grooves (135). The trigger arm (160) passes through between the baffle (235) and the transverse groove (135) and extends to the outside of the upper shell (130) to cooperate with the upper part of the microswitch (220).

11. The indicating device of the switch electrical appliance according to claim 1, characterized in that: Two center-symmetric driven arms (1a) are provided on both sides of the rotor member (110). Upper relief grooves (2a) are respectively formed at intervals between the two ends of the two driven arms (1a). The length direction of the driven arm (1a) is parallel to the axial direction of the push rod member (210), and the length of the driven arm (1a) gradually increases or decreases along the circumferential direction of the push rod member (210) to form an inclined driven slope (3a). The driven arm (1a) and the upper relief groove (2a) respectively constitute the protrusion (1) and the concave valley (2) of the rotor member (110), and the driven slope (3a) constitutes the driving slope (3) of the rotor member (110); The push rod member (210) includes a push plate part (211) and a push rod part (212) connected to one side of the push plate part (211). The other side of the push plate part (211) is provided with two pushing arms (1b) corresponding to the two driven arms (1a) one by one. The length direction of the pushing arm (1b) is parallel to the axial direction of the push rod member (210), and the lengths of the two pushing arms (1b) gradually increase or decrease along the circumferential direction of the push rod member (210) to form a pushing slope (3b). Lower relief grooves (2b) are respectively formed at intervals between the two ends of the two pushing arms (1b). The pushing arm (1b) and the lower relief groove (2b) respectively constitute the protrusion (1) and the concave valley (2) of the push rod member (210), and the pushing slope (3b) constitutes the driving slope (3) of the push rod member (210).

12. The indicating device of the switch electrical appliance according to claim 1, characterized in that: The switching device is a circuit breaker. The main circuit unit includes a moving contact, a static contact, and a contact support (320) for fixing the moving contact. The push rod member (210) cooperates with the contact support (320). When the circuit breaker is closed, the contact support (320) drives the moving contact to contact the static contact, and at the same time drives the push rod member (210) to move towards the rotor member (110). When the circuit breaker is opened, the contact support (320) drives the moving contact to separate from the static contact, and at the same time drives the push rod member (210) to move away from the rotor member (110).

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