CN111293604A - Door opening mechanism of electric box - Google Patents

Abstract

The invention provides a door opening mechanism of an electric box, and belongs to the technical field of machinery. It has solved the current inconvenient problem of electrical box key storage. This mechanism of opening door of electric box includes box and chamber door, and the lateral part of above-mentioned box is the open end, the chamber door border articulates at the box border and can make above-mentioned box switching around its articulated swing of department when the chamber door, the open end inboard of box has and is frame-like convex locating frame one, the chamber door lateral part has linked firmly and is frame-like convex locating frame two, and the two outer edges of foretell locating frame when the chamber door is closed in box open end department inlay in locating frame one along and locating frame two parts stretch out locating frame one, have elasticity card tongue mechanism in the locating frame two. The door opening mechanism of the electric box does not need to use a key when opening and closing the box door, and the problem of how to safely store the key is solved.

Description

Door opening mechanism of electric box

Technical Field

The invention belongs to the technical field of machinery, and relates to an electrical box, in particular to a door opening mechanism of the electrical box.

Background

The electric box is assembled with switch equipment, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal cabinet according to the electric wiring requirement, and generally comprises a box body with a cavity inside for convenient maintenance, and a box door capable of opening and closing the box body is connected to the box body.

In normal operation, the circuit can be switched on or off by means of a manual or automatic switch. When the fault or abnormal operation occurs, the circuit is cut off or an alarm is given by the aid of the protective electric appliance. The measuring instrument can display various parameters in operation, and can also adjust some electrical parameters to prompt or send out signals for deviation from normal working state.

In order to avoid improper operation of other people, a lock is arranged between the box door and the box body. However, if the number of the electrical boxes is too large, the operator needs to carry a plurality of keys, and the corresponding electrical boxes are opened by using the keys. Obviously, the problem of how to keep the key and the problem of the labor for searching the corresponding key when opening the electric box exists.

Chinese patent publication No. CN203481742U provides an "electrical box", which includes an electrical box main body, a junction box, an external cable, and a glan head, wherein the junction box is disposed on a side wall of the electrical box main body, the interior of the junction box is communicated with the interior of the electrical box main body, a plurality of wire passing holes are disposed on an upper portion of the junction box, the external cable passes through the wire passing holes, a glan head is disposed at a position where the external cable passes through the wire passing holes, and a plurality of round holes are disposed on a side wall of the electrical box main body; the interior of the junction box is communicated with the interior of the main body of the electric box through a round hole; a wiring terminal is arranged in the round hole; the external cable passes through the wire passing hole and the Glan head to be connected with the outer side wiring point of the wiring terminal; and the electric component connecting wire in the electric box main body is connected with the inner side wiring point of the wiring terminal.

The above patent reduces the possibility of damaging the precision parts in the electric box main body and leaving some electrically harmful sundries inside the electric box main body during the wiring operation.

However, the above patent does not disclose how to open and close the electrical box. That is, it uses the common lock to lock the box door and the box body.

Disclosure of Invention

The invention aims to provide a hidden door opening mechanism for opening an electrical box of a box door, aiming at the problems in the prior art.

The purpose of the invention can be realized by the following technical scheme: the utility model provides an opening door mechanism of electric box, electric box includes box and chamber door, and the lateral part of above-mentioned box is the open end, the chamber door border articulates at the box border and when the chamber door can make above-mentioned box switching around its articulated swing of department, its characterized in that, the open end inboard of box has is the frame form protruding locating frame one, the chamber door lateral part links firmly and is frame form convex locating frame two, when the chamber door is closed at box opening end department the above-mentioned locating frame two outer edges inlay in locating frame one along and locating frame two partially stretch out locating frame one, have elasticity block tongue mechanism in locating frame two, elasticity block tongue mechanism stretches out locating frame two and supports and lean on locating frame one inboard under the elastic action part of self, have in the box and can promote block tongue mechanism and make its draw back into the opening door mechanism in locating frame two, the box lateral part has the connecting axle that the axial links firmly on it, the outer end of the connecting shaft is positioned outside the box body and is provided with a connecting part for connecting with a tool, the inner end of the connecting shaft is positioned in the box body and is connected with the door opening mechanism, the door is provided with a lock for inserting a key, the door opening mechanism comprises a gear, a first pull rod, a second pull rod, a rack and a guide block, the gear is fixedly connected at the inner end of the connecting shaft, the guide blocks are fixedly connected at the inner side of the box body, the number of the guide blocks is at least two, the number of the racks is two, one rack is fixedly connected on the first pull rod, the other rack is fixedly connected on the second pull rod, the first pull rod is connected on the corresponding guide block and can move up and down along the guide block, the second pull rod is connected to the corresponding guide block and can move up and down along the guide block, the rack on the first pull rod is meshed with the gear, and the rack on the second pull rod is meshed with the gear.

After the box door is closed on the box body, the outer edge of the positioning frame is embedded into the inner edge of the first positioning frame, and the second positioning frame is connected with the first positioning frame through the elastic latch mechanism. The elastic clamping tongue mechanism extends out of the second positioning frame all the time under the action of the elasticity of the elastic clamping tongue mechanism, so that the electric box is always kept in a closed state under the action of the elastic clamping tongue after the box door is closed.

When the electric box needs to be opened, a tool is inserted into the connecting part at the outer end of the connecting shaft, the tool drives the connecting shaft to rotate, the clamping tongue mechanism retracts into the second positioning frame through the door opening mechanism, and at the moment, the second positioning frame can be smoothly separated from the first positioning frame, so that the box door is opened.

The first positioning frame also has the function of preventing impurities from being brought into the box body in the process of opening and closing the box door. Of course, once the box door is opened, an operator can conveniently maintain the electrical box. The lock on the door is just a camouflage function and it does not act to open the door. Of course, the outer end of the connecting shaft is arranged to be hidden.

Therefore, other people can not successfully operate the electric box maliciously.

In the door opening mechanism of the electrical box, the elastic latch mechanism comprises a latch, a spring and a positioning cavity recessed from the bottom of the outer edge of the positioning frame, the latch and the spring are both positioned in the positioning cavity, two ends of the spring respectively press the bottom of the positioning cavity and the inner end of the latch, and the outer end of the latch extends out of the positioning frame II under the elastic force of the spring.

The outer end of the clamping tongue extends out of the second positioning frame under the action of the elastic force of the spring, so that the outer end of the clamping tongue is clamped on the inner side of the first positioning frame.

In the door opening mechanism of the electrical box, the number of the elastic latch mechanisms is two and the two elastic latch mechanisms are respectively positioned at the upper part and the lower part of the second positioning frame.

The second positioning frame and the first positioning frame can be stably clamped together through the two clamping tongue mechanisms.

In the door opening mechanism of the electrical box, the elastic latch mechanism is positioned at the second positioning frame far away from the hinge joint of the box door.

The clamping tongue mechanism positioned on the side can be stably clamped on the first positioning frame.

In the door opening mechanism of the electrical box, the port of the positioning cavity is provided with a convex blocking edge, the side part of the clamping tongue is provided with a convex blocking shoulder, and the blocking shoulder is abutted against the blocking edge under the elastic force of the spring.

The blocking edge is matched with the blocking shoulder to place the clamping tongue to fall off from the positioning cavity.

In the door opening mechanism of the electrical box, the inner end of the clamping tongue is in a prism shape, and the positioning cavity is matched with the inner end of the clamping tongue in shape.

The prism-shaped clamping tongue is matched with the positioning cavity, so that the clamping tongue cannot rotate in the process of moving up and down.

In the door opening mechanism of the electrical box, the outer end of the latch has an inclined guide surface, and the guide surface faces the inner side of the box body.

The structure of the inner end of the clamping tongue ensures that the guide surface of the outer end of the clamping tongue always faces the inner side of the box body, and finally ensures that the clamping tongue can be stably clamped at one position of the positioning frame.

In the door opening mechanism of the electric box, an inner edge of the positioning frame is provided with an inclined tongue passing surface, and the guide surface of the clamping tongue can slide through the tongue passing surface when the box door is closed.

The guide surface of the clamping tongue can smoothly slide through the tongue surface.

In the door opening mechanism of the electrical box, the first positioning frame comprises a first straight rod-shaped frame body and a second U-shaped frame body, and the first frame body and the second frame body are connected end to form a first square frame-shaped positioning frame.

The positioning frame with the structure is convenient to assemble and disassemble. Of course, the second positioning frame is also of a similar structure, and is not described herein again.

In the door opening mechanism of the electrical box, a connecting block is arranged between the end part of the first frame body and the end part of the second frame body, and the tongue passing surface is positioned at the connecting block.

The connecting block is made of wear-resistant materials, and the service life of the connecting block can be prolonged. The connecting block that grinds after long-time use can be changed alone, has reduced the use cost of this electric box.

In the door opening mechanism of the electric box, the two ends of the connecting block are provided with connectors protruding in a prism shape, and the first frame body and the second frame body end are provided with connecting grooves matched with the connectors.

Because the connector is non-circular, the connecting groove matched with the connector and the connector can be connected to the first frame body and the second frame body stably.

In the door opening mechanism of the electrical box, the outer side of the connecting block is fixedly connected with the protective layer.

In the process of opening and closing the box door, the clamping tongue can frequently slide through the connecting block, so that the abrasion of the connecting block can be reduced as much as possible through the protective layer.

In the door opening mechanism of the electric box, the protective layer comprises a rubber inner layer and a metal outer layer, the inner side of the rubber inner layer is fixedly connected to the side part of the connecting block through glue, and the inner side of the metal outer layer is fixedly connected to the outer side of the rubber inner layer through glue.

The rubber inner layer is flexible, so that the rubber inner layer can play a role in shock absorption. The outer metal layer is made of wear-resistant materials, so that the wear can be effectively reduced.

In the door opening mechanism of the electrical box, the upper part and the lower part of the connecting block are respectively provided with a concave groove, the two ends of the metal outer layer are respectively provided with a hook matched with the grooves, the hooks are embedded in the corresponding grooves, and the end part of the rubber inner layer is tightly pressed between the hook and the groove.

Such structure can not only make the outer firm connection of metal on the connecting block, and the rubber inlayer can also be by firm stiction between connecting block and the outer metal layer moreover.

In the mechanism of opening door of foretell electric box, the mechanism of opening door include gear, pull rod one, pull rod two, rack and guide block, above-mentioned gear links firmly in the connecting axle inner, and above-mentioned guide block links firmly at the box inboard and its quantity is two at least, the quantity of above-mentioned rack is two, and one of them rack links firmly on pull rod one, and another rack links firmly on pull rod two, pull rod one connect rather than the guide block that corresponds on and can follow this guide block translation from top to bottom, pull rod two connect rather than the guide block that corresponds on and can follow this guide block translation from top to bottom, rack and gear engagement on pull rod one, rack and gear engagement on the pull rod two.

The connecting shaft drives the gear to rotate in the rotating process, and the gear drives the two racks meshed on the two sides of the gear to move up and down respectively in the rotating process. The two racks are respectively and fixedly connected to the first pull rod and the second pull rod which correspond to the racks, and finally the first pull rod and the second pull rod are driven to translate reversely.

Of course, the first pull rod and the second pull rod translate under the guiding action of the guide block. And after the first pull rod and the second pull rod are translated in the opposite directions, the clamping tongues in the clamping tongue mechanism are pressed to enable the two clamping tongues to be retracted into the second positioning frame. Once the clamping tongue is retracted into the second positioning frame, the box door can be opened.

In the door opening mechanism of the electrical box, one end of the pull rod is provided with a first protruded hook, and the two ends of the pull rod are provided with a second protruded hook.

The first draw hook and the second draw hook are close to the corresponding clamping tongues respectively, and the first draw rod pulls the corresponding clamping tongues through the first draw hook after moving, and the clamping tongues are retracted into the second positioning frame. The second pull rod moves to pull the corresponding clamping tongue through the second drag hook, and the clamping tongue is retracted into the second positioning frame

In the door opening mechanism of the electrical box, the first pull rod is in the shape of a straight rod, the first pull hook is located at the upper end of the first pull rod, the second pull rod comprises a first rod section, a second rod section and a third rod section, the racks are fixedly connected to the first rod section, the racks on the first rod section and the first pull rod are respectively meshed with the two sides of the gear, the first rod section is parallel to the first pull rod, the axis of the third rod section coincides with the axis of the pull rod, the two ends of the second rod section are respectively connected to the first rod section and the third rod section, and the second pull hook is located at the three end of the first rod section.

The connecting line between the two clamping tongues is superposed with the connecting line between the first draw hook and the second draw hook. The structure can enable the two clamping tongues to be stably pushed and retracted into the second positioning frame.

In the door opening mechanism of the electric box, a partition board is further arranged in the box body, two sides of the guide block are fixedly connected to the inner sides of the partition board and the box body respectively, an operation cavity is formed between the partition board and the inner side of the box body, the first pull rod and the second pull rod are located in the operation cavity, a penetrating limiting hole is formed in the position, close to the upper portion and the lower portion of the partition board, of the partition board respectively, the first pull hook is located at one limiting hole, and the second pull hook is located at the other limiting hole corresponding to the first pull hook.

The operation chamber that forms between baffle and the box inboard is used for installing foretell guide, pull rod one and pull rod two, and such structure can not lead to box inner structure complicated, makes the inside clean and tidy space that keeps of box, and other electric appliances of being convenient for are convenient installs in the box.

The limiting hole has two functions: the first draw hook and the second draw hook extend out and can be stably contacted with the clamping tongue; and secondly, the moving stroke of the first draw hook and the second draw hook is limited.

In the door opening mechanism of the electric box, the side part of the gear is fixedly connected with a limiting block, a limiting strip is fixedly connected in the box body, a return spring is arranged between the gear and the limiting strip, and the limiting block is abutted against the limiting strip under the elastic action of the return spring.

The structure can keep the door opening mechanism in an initial state, namely, the locking state that the clamping tongue extends out is always kept.

In the door opening mechanism of the electric box, a battery, a loudspeaker and a normally open switch are fixedly connected in the box body, the normally open switch is connected with the lock and can be closed when the lock acts, and the battery, the loudspeaker and the normally open switch are connected through a wire to form a circuit loop.

When other personnel operate maliciously, the normally open switch is closed after the lockset acts. At this time, the horn is energized to sound an audible warning.

In the door opening mechanism of the electrical box, the side part of the box body is provided with a concave guide groove, the guide groove is connected with a baffle capable of translating along the guide groove, the outer end of the connecting shaft is positioned at the guide groove, and the outer end of the connecting shaft is shielded by the baffle.

The guide way leads the baffle, can avoid other personnel to discover the connecting axle after the connecting axle outer end is sheltered from by the baffle.

In the door opening mechanism of the electrical box, the outer side of the baffle is flush with the outer side of the box body, the front end of the baffle is close to the opening end of the upper box body, and the rear end of the baffle is close to the back of the box body.

The structure can make the box body compact in appearance and not easy to have baffles. The baffle is a box body which is formed by assembling a plurality of plate bodies in appearance.

In the door opening mechanism of the electric box, the middle part of the inner side of the baffle is provided with a convex storage part, the storage part is provided with a concave storage hole along the moving direction of the baffle, and a rod-shaped tool which is embedded into the connecting part on the connecting shaft and can enable the connecting shaft to rotate is positioned at the storage hole.

The rod-shaped tool can be conveniently connected to the inner side of the baffle plate after being inserted into the storage hole. The baffle plays the effect of depositing the instrument.

In the door opening mechanism of the electrical box, the storage hole is a blind hole, the inner end of the tool is located in the storage hole, and the outer end of the tool extends out of the storage hole and is located on the inner side of the baffle.

This arrangement enables the barrier to safely shield rod-like tools mounted thereon from view, even if the barrier is opened, the presence of the rod-like tools is not known without viewing the interior of the barrier. That is, other persons cannot open the electrical box.

Compared with the prior art, the door opening mechanism of the electric box has the advantages that the lock on the box door is only in a covering effect, the baffle is pushed open firstly when the box door is opened, and then the rod-shaped tool is detached from the baffle and then the connecting shaft is rotated. Obviously, other persons who maliciously open the electrical box will not think that the lock is actually not used to open the electrical box, and they will only think how to open the electrical box. Thereby the effectual electric box of having ensured can not opened maliciously.

Meanwhile, the baffle hides the connecting part of the connecting shaft, and meanwhile, the baffle hides the opened rod-shaped tool inside the baffle. It can be seen that the concealing effect is good, and common people cannot imagine the correct opening method of the electrical box.

In addition, because the tools are stored on the baffle, the problem of how to store the tools is solved, and the tool storage rack has high practical value.

Drawings

Fig. 1 is a schematic structural view of the door opening mechanism of the electric box when closed.

Fig. 2 is a schematic structural diagram of the door opening mechanism of the electric box when being opened.

Fig. 3 is a schematic sectional structural view of a second positioning frame in the door opening mechanism of the electrical box.

Fig. 4 is a schematic sectional view of the door opening mechanism of the present electrical box when closed.

Fig. 5 is a schematic structural diagram of a door opening structure in the door opening mechanism of the electric box.

Fig. 6 is a schematic sectional view of the door opening mechanism of the present electrical box when closed.

Fig. 7 is a structural schematic diagram of a structural part where a first pull rod and a second pull rod are meshed with a gear in the door opening mechanism of the electric box.

Fig. 8 is a schematic sectional view of the opening mechanism of the electric box at the gear.

Fig. 9 is a schematic structural view of the electric box at the position of the baffle plate in the door opening mechanism.

Fig. 10 is a partial sectional structural schematic view of a shutter in the door opening mechanism of the present electrical box.

Fig. 11 is a partial sectional structural view of the other direction of the shutter in the door opening mechanism of the present electrical box.

Fig. 12 is a schematic sectional view of the connecting block in the door opening mechanism of the electric box.

In the figure, 1, a box body; 1a, an open end; 1b, a guide groove; 1c, a limiting strip; 2. a box door; 3. a first positioning frame; 3a, a frame body I; 3b, a second frame body; 3c, connecting grooves; 4. a second positioning frame; 4a, a positioning cavity; 4a1, blocking edge; 5. a connecting shaft; 5a, a connecting part; 6. a lock; 7. a latch; 7a, a shoulder; 7b, a guide surface; 8. a spring; 9. connecting blocks; 9a, passing through the tongue surface; 9b, a connector; 9c, a groove; 10. an inner rubber layer; 11. a metal outer layer; 11a, hooking; 12. a gear; 12a, a limiting block; 13. a rack; 14. a first pull rod; 14a, pulling a first hook; 15. a second pull rod; 15a, a second draw hook; 15b, a first rod section; 15c, a second rod section; 15d, a rod section III; 16. a guide block; 17. a partition plate; 17a, a limiting hole; 18. a baffle plate; 18a, a storage unit; 18b, a storage hole; 19. a return spring; 20. a tool.

Detailed Description

As shown in fig. 1 and 2, the door opening mechanism of the electrical box comprises a box body 1 and a box door 2, wherein the side part of the box body 1 is an opening end 1a, the edge of the box door 2 is hinged on the edge of the box body 1, and when the box door 2 swings around the hinged part, the box body 1 can be opened and closed.

The inner side of the opening end 1a of the box body 1 is provided with a first positioning frame 3 protruding in a frame shape, the side part of the box door 2 is fixedly connected with a second positioning frame 4 protruding in a frame shape, when the box door 2 is closed at the opening end 1a of the box body 1, the outer edge of the second positioning frame 4 is embedded in the inner edge of the first positioning frame 3, and the part of the second positioning frame 4 extends out of the first positioning frame 3.

As shown in fig. 4 and 5, an elastic latch mechanism is arranged in the second positioning frame 4, the elastic latch mechanism partially extends out of the second positioning frame 4 under the elastic action of the elastic mechanism and abuts against the first positioning frame 3, a door opening mechanism capable of pushing the latch mechanism and enabling the latch mechanism to retract into the second positioning frame 4 is arranged in the box body 1, the side part of the box body 1 is provided with a connecting shaft 5 axially and fixedly connected onto the connecting shaft, the outer end of the connecting shaft 5 is arranged on the outer side of the box body 1 and provided with a connecting part 5 connected with a tool 20, the inner end of the connecting shaft 5 is arranged in the box body 1, the inner end of the connecting shaft 5 is connected with the door opening mechanism, and the box door 2 is provided with a lock 6 for.

As shown in fig. 7, the elastic latch mechanism includes a latch 7, a spring 8 and a positioning cavity 4a recessed along the bottom of the outer edge of the positioning frame two 4, the latch 7 and the spring 8 are both located at the positioning cavity 4a, two ends of the spring 8 respectively press against the bottom of the positioning cavity 4a and the inner end of the latch 7, and the outer end of the latch 7 extends out of the positioning frame two 4 under the elastic force of the spring 8. In this embodiment, the number of the elastic tongue-locking mechanisms is two and the two elastic tongue-locking mechanisms are respectively positioned at the upper part and the lower part of the second positioning frame 4.

The elastic latch mechanism is positioned at the second positioning frame 4 far away from the hinged position of the box door 2.

The positioning cavity 4a is provided with a convex stopping edge 4a1 at the port, the side part of the clamping tongue 7 is provided with a convex stopping shoulder 7a, and the stopping shoulder 7a is abutted against the stopping edge 4a1 under the action of the elastic force of the spring 8. The inner end of the clamping tongue 7 is prism-shaped, and the positioning cavity 4a is matched with the inner end of the clamping tongue 7 in shape.

The outer end of the latch 7 is provided with an inclined guide surface 7b, and the guide surface 7b faces the inner side of the box body 1. The inner edge of the first positioning frame 3 is provided with an inclined tongue passing surface 9a, and the guide surface 7b of the clamping tongue 7 can slide through the tongue passing surface 9a when the box door 2 is closed.

As shown in fig. 3, the positioning frame 3 includes a straight frame 3a and a U-shaped frame 3b, and the frame 3a and the frame 3b are connected end to form the positioning frame 3 in a square frame shape. A connecting block 9 is arranged between the end part of the first frame body 3a and the end part of the second frame body 3b, and the tongue passing surface 9a is positioned at the connecting block 9.

In this embodiment, two ends of the connecting block 9 are provided with connectors 9b protruding in a prism shape, and the end portions of the first frame 3a and the second frame 3b are provided with connecting grooves 3c matched with the connectors 9 b.

As shown in fig. 12, the outer 9 side of the connecting block is fixedly connected with a protective layer. The protective layer comprises a rubber inner layer 10 and a metal outer layer 10, the inner side of the rubber inner layer 10 is fixedly connected to the side portion of the connecting block 9 through glue, and the inner side of the metal outer layer 11 is fixedly connected to the outer side of the rubber inner layer 10 through glue.

The upper and lower portions of the connecting block 9 are respectively provided with a concave groove 9c, both ends of the metal outer layer 11 are provided with hooks 11a matching with the grooves 9c, the hooks 11a are embedded in the corresponding grooves 9c and the end of the rubber inner layer 10 is tightly pressed between the hooks 11a and the grooves 9 c.

The door opening mechanism comprises a gear 12, a first pull rod 14, a second pull rod 15, racks 13 and guide blocks 16, wherein the gear 12 is fixedly connected to the inner end of the connecting shaft 5, the guide blocks 16 are fixedly connected to the inner side of the box body 1, the number of the guide blocks is at least two, the number of the racks 13 is two, one of the racks 13 is fixedly connected to the first pull rod 14, the other rack 13 is fixedly connected to the second pull rod 15, the first pull rod 14 is connected to the guide block 16 corresponding to the first pull rod 14 and can move up and down along the guide block 16, the second pull rod 15 is connected to the guide block 16 corresponding to the second pull rod and can move up and down along the guide block 16, the rack 13 on the first pull rod 14 is meshed with the gear 12, and the rack 13 on the second pull rod 15 is meshed with the gear 12.

The first 14 end of the pull rod is provided with a first protruded hook 14a, and the second 15 end of the pull rod is provided with a second protruded hook 15 a. The first pull rod 14 is in a straight rod shape, the first pull hook 14a is located at the upper end of the first pull rod 14, the second pull rod 15 comprises a first rod section 15b, a second rod section 15c and a third rod section 15d which are in a straight rod shape, the rack 13 is fixedly connected to the first rod section 15b, the racks 13 on the first rod section 15b and the first pull rod 14 are respectively meshed with two sides of the gear 12, the first rod section 15b is parallel to the first pull rod 14, the axis of the third rod section 15d is coincident with the axis of the first pull rod 14, two ends of the second rod section 15c are respectively connected to the first rod section 15b and the third rod section 15d, and the second pull hook 15a is located at the end of the third rod section 15 d.

As shown in fig. 1 and 6, the box body 1 is further provided with a partition 17, two sides of the guide block 16 are respectively fixedly connected to the partition 17 and the inner side of the box body 1, an operation cavity is formed between the partition 17 and the inner side of the box body 1, the first pull rod 14 and the second pull rod 15 are both positioned in the operation cavity, the partition 17 is provided with a through limiting hole 17a near the upper portion and the lower portion thereof, the first pull hook 14a is positioned at one limiting hole 17a, and the second pull hook 15a is positioned at the other corresponding limiting hole 17 a.

As shown in fig. 8, a limit block 12a is fixedly connected to a side portion of the gear 12, a limit strip 1c is fixedly connected to the inside of the box body 1, a return spring 19 is arranged between the gear 12 and the limit strip 1c, and the limit block 12a is abutted against the limit strip 1c under the elastic force of the return spring 19.

This structure enables the door opening mechanism to maintain an initial state, i.e., a locked state in which the latch 7 is extended.

The box body 1 is fixedly connected with a battery, a loudspeaker and a normally open switch, the normally open switch is connected with a lockset and can be closed when the lockset acts, and the battery, the loudspeaker and the normally open switch are connected through a wire to form a circuit loop.

As shown in fig. 9, the side of the box body 1 is provided with a concave guide groove 1b, a baffle plate 18 capable of translating along the guide groove 1b is connected to the guide groove 1b, the outer end of the connecting shaft 5 is positioned at the guide groove 1b, and the outer end of the connecting shaft 5 is shielded by the baffle plate 18.

The outer side of the baffle plate 18 is flush with the outer side of the box body 1, the front end of the baffle plate 18 is close to the opening end of the box body 1, and the rear end of the baffle plate 18 is close to the back of the box body 1.

As shown in fig. 10 and 11, the baffle plate 18 has a convex storage portion 18a at the center of the inner side thereof, the storage portion 18a has a concave storage hole 18b in the moving direction of the baffle plate 18, and a rod-like tool 20 which is inserted into the connecting portion of the connecting shaft 5 to rotate the connecting shaft 5 is located at the storage hole 18 b. The storage aperture 18b is blind and the tool 20 is located within the storage aperture 18b at its inner end and the tool 20 extends beyond the storage aperture 18b at its outer end and is located inside the blind 18.

After the box door 2 is closed on the box body 1, the outer edge of the second positioning frame 4 is embedded in the inner edge of the first positioning frame 3, and the outer end of the clamping tongue 7 extends out of the second positioning frame 4 under the elastic force action of the spring 8. At this time, the latch 7 cannot fall off from the positioning frame two 4 under the action of the blocking edge 4a1 and the blocking shoulder 7 a. Meanwhile, the outer end of the clamping tongue 7 always extends out of the second positioning frame 4 under the action of the elastic force of the spring 8, so that the electric box is always kept in a closed state under the action of the clamping tongue 7 after the box door 2 is closed. In addition, the inner end of the clamping tongue 7 is matched with the positioning cavity 4a on the second positioning frame 4, and the structure can ensure that the clamping tongue 7 cannot rotate in the up-and-down moving process.

When the electrical box needs to be opened, the baffle 18 is pushed away, and then the rod-shaped tool 20 on the baffle 18 is removed. At this time, the connection portion of the connection shaft 5 is exposed to the outside, and the rod-shaped tool 20 is inserted into the connection portion 5a of the connection shaft 5, so that the connection shaft 5 is easily rotated by the tool 20.

The connecting shaft 5 drives the gear 12 to rotate in the rotating process, and the gear 12 drives the two racks 13 engaged on the two sides of the gear to move up and down respectively in the rotating process. Because the two racks 13 are respectively fixedly connected to the first pull rod 14 and the second pull rod 15 corresponding to the racks, the first pull rod 14 and the second pull rod 15 are finally driven to reversely translate.

Of course, the first pull rod 14 and the second pull rod 15 are translated under the guiding action of the guide block 16. When the first pull rod 14 and the second pull rod 15 translate reversely, the first draw hook 14a on the first pull rod 14 pushes one of the two clamp tongues 7, and the second draw hook 15a on the second pull rod 15 pushes the other clamp tongue 7, so that the two clamp tongues 7 are retracted into the second positioning frame 4. Once the clamping tongue 7 retracts into the second positioning frame 4, the box door 2 can be opened.

The arrangement of the partition plate 17 can prevent the pull rod and the guide block 16 from being exposed in the box body 1, and meanwhile, the limiting hole 17a in the partition plate 17 can limit the moving stroke of the first pull rod 14 and the second pull rod 15, and can enable the first pull hook 14a and the second pull hook 15a to be stably contacted with the corresponding clamping tongues 7.

The first positioning frame 3 also plays a role in preventing impurities from being brought into the box body 1 in the process of opening and closing the box door 2. Of course, once the box door 2 is opened, the operator can conveniently maintain the electric box. The lock 6 on the door 2 is just a masking effect and does not serve to open the door 2. Of course, the outer end of the connecting shaft 5 is arranged to be relatively hidden.

It can be seen that the opening part of the electric box is hidden, a person who maliciously opens the electric box is difficult to find the hidden connecting shaft 5, even if the person finds the connecting shaft 5, the person is difficult to find the rod-shaped tool 20 for rotating the connecting shaft 5, and the lockset on the box door 2 only has a concealing effect. Therefore, other people can not successfully operate the electric box maliciously.

Claims (9)

1. The utility model provides an opening door mechanism of electric box, electric box includes box and chamber door, the lateral part of above-mentioned box is the open end, the chamber door border articulates at the box border and when the chamber door around its articulated department pendulum kinetic energy make above-mentioned box switching, its characterized in that, the open end inboard of box has is frame-like convex locating frame one, the chamber door lateral part links firmly and is frame-like convex locating frame two, when the chamber door is closed at box open end department the above-mentioned locating frame two outer edges inlay in locating frame one and locating frame two parts stretch out locating frame one, have elasticity block tongue mechanism in locating frame two, elasticity block tongue mechanism stretches out locating frame two and supports and leans on locating frame one inboard in the elastic action part of self, have in the box and can promote block tongue mechanism and make its draw back into the connecting axle of connecting in locating frame two opening door mechanism, box side portion has the axial and links firmly on it, the outer end of the connecting shaft is positioned outside the box body and is provided with a connecting part which is used for being connected with a tool, the inner end of the connecting shaft is positioned inside the box body and is connected with the door opening mechanism, the box door is provided with a lock for inserting a key, the door opening mechanism comprises a gear, a first pull rod, a second pull rod, racks and guide blocks, the gear is fixedly connected at the inner end of the connecting shaft, the guide blocks are fixedly connected at the inner side of the box body and are at least two, the number of the racks is two, one rack is fixedly connected on the first pull rod, the other rack is fixedly connected on the second pull rod, the first pull rod is connected on the guide block corresponding to the first pull rod and can move up and down along the guide block, the second pull rod is connected on the guide block corresponding to the second pull rod and can move up and down along the guide block, the racks on the first pull rod are meshed with the gears, the, the elastic clamping tongue mechanism comprises a clamping tongue, a spring and a positioning cavity, wherein the bottom of the outer edge of the positioning frame is recessed, the clamping tongue and the spring are located in the positioning cavity, the bottom of the positioning cavity and the inner end of the clamping tongue are respectively pressed at two ends of the spring, and the outer end of the clamping tongue extends out of the positioning frame II under the elastic action of the spring.

2. The electrical box opening mechanism of claim 1, wherein the number of the elastic latch mechanisms is two and the two elastic latch mechanisms are respectively located at the upper part and the lower part of the second positioning frame.

3. The electrical box opening mechanism of claim 1, wherein one end of the pull rod has a first protruding hook, and the two ends of the pull rod have a second protruding hook.

4. The door opening mechanism of the electrical box according to claim 3, wherein the first draw bar is in a straight bar shape and the first draw hook is located at the upper end of the first draw bar, the second draw bar comprises a first rod section, a second rod section and a third rod section, the rack is fixedly connected to the first rod section, the racks on the first rod section and the first draw bar are respectively meshed with two sides of the gear, the first rod section is parallel to the first draw bar, the axis of the third rod section is coincident with the axis of the first draw bar, two ends of the second rod section are respectively connected to the first rod section and the third rod section, and the second draw hook is located at the three end parts of the first rod section.

5. The electrical box opening mechanism of claim 3, wherein a partition is further provided in the box, two sides of the guide block are respectively fixedly connected to the partition and the inner side of the box, an operation cavity is formed between the partition and the inner side of the box, the first pull rod and the second pull rod are both located in the operation cavity, the partition is provided with a through limiting hole near the upper portion and the lower portion of the partition, the first pull hook is located at one limiting hole, and the second pull hook is located at the other limiting hole corresponding to the first pull hook.

6. The door opening mechanism of the electrical box according to claim 1, wherein a limiting block is fixedly connected to a side portion of the gear, a limiting strip is fixedly connected to the box body, a return spring is arranged between the gear and the limiting strip, and the limiting block abuts against the limiting strip under the elastic force of the return spring.

7. The electrical box opening mechanism of claim 1, wherein the inner end of the latch is prism-shaped, and the positioning cavity matches the shape of the inner end of the latch.

8. The electrical box opening mechanism of claim 7, wherein the outer end of the latch has an inclined guide surface facing the inside of the box body.

9. The electrical box opening mechanism of claim 8, wherein an inner edge of the positioning frame has an inclined tongue surface, and the guide surface of the latch slides over the tongue surface when the box door is closed.

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