Electric isolation mechanism for environment-friendly cabinet

Abstract

The utility model discloses an electric isolation mechanism for an environment-friendly cabinet, which comprises a rack, an isolation operation shaft and a transmission main shaft are rotatably arranged on the rack, the isolation operation shaft is in transmission connection with the transmission main shaft, a driving motor is arranged on the rack, an output end of the driving motor is connected with a driving gear, and the driving gear is connected with an output end of the isolation operation shaft. A driving gear is arranged on the isolation operation shaft, a transmission disc is arranged on the isolation operation shaft in the circumferential direction, a driven gear is arranged outside the transmission disc in a sleeving mode, the driven gear is meshed with the driving gear, two wedge-shaped grooves with opposite directions are formed in the contact face of the driven gear and the transmission disc, a pawl is arranged on the transmission disc in a swinging mode, and abutting steps are arranged at the two ends of the pawl respectively. A permanent magnet is arranged at the position, abutting against the step, of the pawl, and a limiting protruding column is arranged on the end face of the rack. The device is simple in structure, reasonable in layout, reliable in transmission and convenient to use, and the electric structure does not affect assembly of an original structure.

Description

Technical Field

[0001] The utility model relates to an electric isolation mechanism for an environmental protection cabinet. Background Art

[0002] The isolation mechanism of the environmental protection cabinet is a key component to ensure the safe and stable operation of the environmental protection cabinet. The existing isolation mechanism is mainly operated by inserting the handle into the operating hexagonal sleeve for rotation. Through the gear reversal, the isolation operating shaft rotates, driving the lever to rotate in an arc and causing the compression spring that conflicts with it to begin to compress. Since it is an arc rotation movement, after the compression spring is compressed to maintain a straight line with the rotation center, the compression spring will release energy over the middle, driving the lever to accelerate rapidly and quickly pull the transmission main shaft through the connecting rod structure, realizing rapid rotation of the transmission main shaft and driving the isolation switch to close. The same is true for the opening action. At the same time, the existing structure is also provided with a limit column for interfering with and limiting the rotation angle of the isolation operating shaft to ensure that the rotation angle of the transmission main shaft is consistent. In this structure, it is more difficult to cooperate with the electric drive opening and closing structure. The overall structure is more bloated after coordination, which affects the miniaturization of the structure and is not conducive to improving the use effect of the structure. Utility Model Content

[0003] In view of the deficiencies of the existing technology, the utility model provides an electric isolation mechanism for an environmental protection cabinet, which has a simple structure, a reasonable layout, and reliable transmission. At the same time, the electric structure does not affect the assembly of the original structure and is easy to use.

[0004] The transmission mechanism that this invention relates to is that this invention relates to an electric isolation mechanism for an environmental protection cabinet, comprising a frame, an isolation operating shaft and a transmission main shaft that are rotatably provided on the frame, the isolation operating shaft is connected to the transmission main shaft, the frame is provided with a driving motor, the output end of the driving motor is connected to the driving gear, the isolation operating shaft is circumferentially provided with a transmission plate, the outer shell of the transmission plate is provided with a driven gear, the driven gear is meshed with the driving gear, and the contact surface of the driven gear and the transmission plate is provided with two wedge-shaped grooves facing opposite directions, and a pawl is swingably provided on the transmission plate, and both ends of the pawl are respectively provided with a contact step for being clamped in the wedge groove so that the transmission plate rotates unidirectionally with the driven gear, the pawl is provided with a permanent magnet at the position of the contact step, and a limiting protrusion is provided on the end face of the frame for contacting the pawl when the clutch operating shaft rotates to the opening or closing position, so that the pawl swings and switches the contact step.

[0005] The beneficial effect of this arrangement is that, in this arrangement, the driving motor drives the driving gear to rotate clockwise, driving the driven gear to rotate. When one of the wedge-shaped grooves on the driven gear is exactly engaged with one of the contact steps of the ratchet, the driven gear drives the transmission plate to rotate synchronously with the ratchet, and also causes the isolation operating shaft to rotate until the compression spring inside the frame is released, and the isolation operating shaft rotates rapidly. Obviously, the rotation speed of the isolation operating shaft here is greater than the rotation speed of the driven gear driven by the driving motor. The transmission plate also rotates rapidly, and the ratchet quickly disengages from the driven gear buckle. When the isolation operating shaft stops at a limited position, the ratchet hits the limit protrusion. Under the action of the impact force, the other contact step of the ratchet rises and is attracted to the inner wall of the driven gear under the action of the permanent magnet, completing the reversal. The structure is vice versa, except that the matching wedge-shaped groove and the contact step are different, realizing the motor to control the forward and reverse rotation of the isolation operating shaft. This arrangement has a compact structure, the working principle of the equipment does not change, the added electric structure does not interfere with the operation, and can be configured according to customer requirements. The structure is convenient to assemble, and the manual and electric structures do not interfere with each other, thereby improving the use effect of the structure.

[0006] As a further configuration of the present invention, the pawl is provided with a contact flange for contacting with the limiting protrusion to drive the pawl to swing.

[0007] The beneficial effect of this setting is that it can evenly transmit the impact force to the pawl body by increasing the contact area with the limiting boss, avoiding component deformation caused by local stress concentration. The precise flange design ensures the stability of the interference position and eliminates the risk of switching delay or failure caused by contact deviation.

[0008] As a further configuration of the present invention, a clamping groove is provided on the pawl at a position corresponding to the abutting step, and the permanent magnet is clamped in the clamping groove.

[0009] The beneficial effect of this arrangement is that, through the adaptive slot structure, the permanent magnet is firmly embedded within it, preventing it from loosening or falling out due to long-term vibration or impact. This ensures that the permanent magnet's attraction force remains stable during the pawl reversal, ensuring the reliable fit between the contact step and the wedge slot, reducing the risk of transmission failure caused by magnet displacement, and further improving the durability of the mechanism.

[0010] As a further configuration of the present invention, a conflicting cam is further connected to the isolation operating shaft, and a micro switch is arranged on the edge of the isolation operating shaft of the frame, and a touch button of the micro switch is attached to the outer peripheral wall of the conflicting cam.

[0011] The beneficial effect of this setting is that the on / off state of the isolation switch can be determined by the position of the isolation operating shaft, and feedback can be provided, or the motor can be controlled on and off to avoid excessive rotation of the motor drive structure, causing damage, and ensuring the service life of the structure.

[0012] As a further configuration of the present invention, the transmission disc is equipped with a plurality of fastening screws, washers are respectively provided at both ends of the fastening screws, clamping grooves are formed between the washers, and the driven gear is clearance-matched with the clamping grooves.

[0013] The beneficial effect of this arrangement is that the clearance fit ensures flexible rotation of the driven gear while limiting axial movement, preventing gear meshing offset during transmission. This structure enhances transmission system stability, reduces power loss due to positional deviation, and further improves the accuracy and durability of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the transmission matching structure of the driven gear in the embodiment of the present utility model;

[0016] Figure 3 This is a partial enlarged view of the position of the pawl in the embodiment of the present utility model;

[0017] Figure 4 This is a schematic structural diagram of the driven gear in an embodiment of the present utility model. DETAILED DESCRIPTION

[0018] The utility model provides an embodiment of an electric isolation mechanism for an environmental protection cabinet, such as Figures 1 to 4As shown, it includes a frame 1, on which an isolation operating shaft 2 and a transmission main shaft are rotatably provided, the isolation operating shaft 2 is transmission-connected to the transmission main shaft, a driving motor 3 is provided on the frame 1, and the output end of the driving motor 3 is connected to a driving gear 31, a transmission plate 5 is circumferentially provided on the isolation operating shaft 2, and a driven gear 4 is provided on the outer sleeve of the transmission plate 5, the driven gear 4 is meshed with the driving gear 31, and two wedge-shaped grooves 41 facing opposite directions are provided on the contact surface between the driven gear 4 and the transmission plate 5, a pawl 6 is swingably provided on the transmission plate 5, and both ends of the pawl 6 are respectively provided with a contact step for being clamped in the wedge groove 41 so that the transmission plate 5 rotates unidirectionally with the driven gear 4, and the pawl 6 is provided with a permanent magnet 61 at the position of the contact step, and a limiting boss 11 is provided on the end face of the frame 1 for contacting the pawl 6 when the clutch operating shaft rotates to the opening or closing position, so that the pawl 6 swings and switches the contact step. The beneficial effect of such arrangement is as follows: in such arrangement, the driving motor 3 drives the driving gear 31 to rotate, thereby driving the driven gear 4 to rotate. When one of the wedge-shaped grooves 41 on the driven gear 4 is engaged with one of the contact steps of the pawl 6, the driven gear 4 drives the transmission plate 5 to rotate synchronously with the pawl 6, and also causes the isolation operating shaft 2 to rotate until the compression spring inside the frame 1 is released and the isolation operating shaft 2 rotates rapidly. Obviously, the rotation speed of the isolation operating shaft 2 here is greater than the rotation speed of the driven gear 4 driven by the driving motor 3, and the transmission plate 5 also rotates rapidly, and the pawl 6 quickly disengages from the buckle of the driven gear 4. When the isolation operating shaft 2 is limited and stopped, the pawl 6 hits the limiting protrusion. Under the action of the impact force, the other contact step of the pawl 6 is tilted and adsorbed on the inner wall of the driven gear 4 under the action of the permanent magnet 61, completing the reversal. The structure is vice versa, except that the cooperating wedge groove 41 is different from the contact step, so that the motor can control the forward and reverse rotation of the isolation operating shaft 2. This setting has a compact structure, the working principle of the equipment has not changed, the added electric structure will not interfere with the operation, it can be configured according to customer requirements, and the structure is easy to assemble, the manual and electric structures will not interfere with each other, and the use effect of the structure is improved.

[0019] As a further feature of this embodiment, the pawl 6 is provided with an abutment flange 62 for abutting against the limiting protrusion to drive the pawl 6 to swing. This configuration has the following beneficial effects: by increasing the contact area with the limiting protrusion 11, the impact force is evenly transmitted to the pawl 6 body, avoiding component deformation caused by local stress concentration. The precise flange design ensures a stable abutment position, eliminating the risk of switching delay or failure caused by contact deviation.

[0020] As a further feature of this embodiment, a snap-in slot is provided on the pawl 6 at the position corresponding to the contact step, and the permanent magnet 61 is secured within the snap-in slot. This advantageous effect is that, through the adapted slot structure, the permanent magnet 61 can be securely embedded therein, preventing it from loosening or falling off due to long-term vibration or impact. This ensures that the adsorption force of the permanent magnet 61 remains stable when the pawl 6 is reversing, ensuring reliable engagement between the contact step and the wedge-shaped slot 41, reducing the risk of transmission failure due to magnet displacement, and further improving the durability of the mechanism.

[0021] As a further feature of this embodiment, the isolation operating shaft 2 is further connected to a contact cam 21. A microswitch 7 is disposed along the edge of the isolation operating shaft 2 on the frame 1, with the contact button of the microswitch 7 attached to the outer peripheral wall of the contact cam 21. This advantageous arrangement allows the on / off state of the isolation switch to be determined by the position of the isolation operating shaft 2, providing feedback or controlling the on / off state of the motor, thereby preventing damage to the motor drive structure caused by excessive rotation and ensuring the service life of the structure.

[0022] As a further feature of this embodiment, the transmission plate 5 is fitted with a number of fastening screws 51. Washers 52 are positioned at either end of the fastening screws 51, forming a clamping groove between the washers 52. The driven gear 4 has a clearance fit within the clamping groove. This arrangement provides a beneficial effect: the clearance fit ensures flexible rotation of the driven gear 4 while limiting axial movement, preventing gear meshing misalignment during transmission. This structure enhances transmission system stability, reduces power loss due to positional deviation, and further improves the accuracy and durability of the mechanism.

[0023] The above example is only one preferred specific example of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. An electric isolation mechanism for an environmental protection cabinet, comprising a frame, on which an isolation operating shaft and a transmission main shaft are rotatably provided, wherein the isolation operating shaft is in driving connection with the transmission main shaft, and characterized in that: The frame is provided with a driving motor, the output end of the driving motor is connected to a driving gear, a transmission plate is circumferentially provided on the isolation operating shaft, a driven gear is provided on the outer sleeve of the transmission plate, the driven gear is meshed with the driving gear, two wedge-shaped grooves are provided on the contact surface of the driven gear and the transmission plate, a pawl is swingably provided on the transmission plate, and both ends of the pawl are respectively provided with interference steps for being clamped in the wedge-shaped groove so that the transmission plate rotates unidirectionally with the driven gear, the pawl is provided with a permanent magnet at the position of the interference step, and a limiting boss is provided on the end face of the frame for interfering with the pawl when the clutch operating shaft rotates to the opening or closing position, so that the pawl swings and switches the interference step.

2. The electric isolation mechanism for an environmental protection cabinet according to claim 1, characterized in that: The pawl is provided with a contact flange for contacting with the limiting protrusion to drive the pawl to swing.

3. The electric isolation mechanism for an environmental protection cabinet according to claim 1, characterized in that: A clamping groove is provided on the pawl at a position corresponding to the abutting step, and the permanent magnet is clamped in the clamping groove.

4. The electric isolation mechanism for an environmental protection cabinet according to claim 1, characterized in that: The isolation operating shaft is also connected to a conflicting cam, and the frame is provided with a micro switch for controlling the power on and off of the drive motor at the edge of the isolation operating shaft, and the touch button of the micro switch is attached to the outer peripheral wall of the conflicting cam edge.

5. The electric isolation mechanism for an environmental protection cabinet according to claim 1, characterized in that: The transmission disc is equipped with a plurality of fastening screws, and washers are respectively provided at both ends of the fastening screws. A clamping groove is formed between the washers, and the driven gear is clearance-matched with the clamping groove.

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