CN201868768U - Low-voltage drawer cabinet - Google Patents

Abstract

The utility model discloses a low-voltage drawer cabinet, which belongs to the technical field of power distribution cabinets. The drawer locking mechanism and the switch closing locking mechanism are installed on the bottom plate of the drawer. The lower end of the drawer locking pin of the drawer locking mechanism points vertically to the floor partition, and the drive shaft of the drawer locking pin is horizontally inserted into the upper part of the drawer locking pin; the rear end of the drawer push control board is for pushing At the front end, there is a B-shaped guide groove for driving the drawer lock pin to move up and down. The drive shaft of the drawer lock pin is inserted vertically into the B-shaped guide groove. The lower end of the closing locking pin of the switch closing locking mechanism points vertically to the layer partition plate, and the upper end is provided with an upward dialing hole and a downward dialing hole; the upper end of the cam is provided with an ascending claw and a downward claw, and the middle part of the end face of the cam is connected to the switch branch. On the closing connecting rod; on the floor partition, there are isolation positions, test positions, connection positions and switch closing locking holes. The chest of drawers is flexible in action and reliable in interlocking.

Description

A low-voltage drawer cabinet

technical field

The utility model relates to a low-voltage drawer cabinet, which belongs to the technical field of power distribution cabinets.

Background technique

The interlock mechanism in the low-voltage drawer cabinet is the core component of the drawer. The functional requirements for the interlock of the drawer cabinet in the national standard GB7251 are: 1. It has an obvious isolation position: the primary plug-in and the secondary plug-in of the drawer are not connected. 2. Have an obvious test position: the primary plug-in of the drawer is not connected, and the secondary plug-in is connected. 3. Have an obvious connection position: the primary plug-in of the drawer is connected, the secondary plug-in is connected, and the drive equipment works normally. 4. When the switch in the drawer is closed, the drawer cannot be pulled out forcibly, and the drawer must be disconnected before being pulled out.

At present, the interlocks of low-voltage drawer cabinets on the market fail to separate the test position from the connected position. They belong to the same position, that is, the drawer working position. There are two handles on this interlock, and one closing handle operates the opening and closing of the switch. , one is the position control small handle, by turning the small handle to reach various positions, in fact the drawer itself does not move, only when the small handle indicates the test position, the closing handle of the mechanical interlock switch cannot be closed, realizing the switch No electricity. This structure has the following disadvantages: since the test position and the connection position of the drawer are in the same position, the upper pile head of the switch in the test position is charged, which has potential safety hazards; The auxiliary contact of the plastic case switch in the drawer is connected to the secondary control circuit. If the switch cannot be closed at the test position, the secondary control circuit will not work.

Utility model content

The purpose of the utility model is to overcome the problems existing in the prior art, and to propose a low-voltage drawer cabinet with sensitive action and reliable interlocking.

In order to solve the above technical problems, a low-voltage drawer cabinet provided by the utility model includes a drawer and a layer partition plate located below the drawer, and a drawer locking mechanism and a switch closing locking mechanism are installed on the bottom plate of the drawer. The drawer locking mechanism comprises a drawer locking mechanism housing, a drawer locking pin, a drawer locking pin drive shaft, a drawer pushing control board and a return spring; The center protrudes vertically to the layer partition, and the drive shaft of the drawer locking pin is horizontally inserted into the upper part of the drawer locking pin; the drawer push control board is parallel to the drawer locking pin, and its rear end is the pushing end. The front end is provided with a B-shaped guide groove to drive the drawer lock pin to move up and down, the drive shaft of the drawer lock pin is vertically inserted into the B-shaped guide groove, and the two ends of the return spring are respectively connected to the drawer push control board and on the housing of the drawer locking mechanism; the layer partition plate is sequentially provided with an isolation position locking hole, a test position locking hole and a connection position locking hole along the direction in which the drawer is pushed, the isolation position locking hole, The test position locking hole and the connecting position locking hole correspond to the positions of the drawer locking pins respectively, and the shapes and sizes are adapted.

Compared with the prior art, the utility model has achieved the following beneficial effects: push the push end of the drawer push control board, the drawer push control board overcomes the pulling force of the return spring and moves backward, and the B-shaped guide groove on the drawer push control board also Move backwards, drive the drive shaft of the drawer lock pin to slide upward along the B-shaped guide groove, and the drive shaft of the drawer lock pin drives the drawer lock pin to retract upward, at this time, the drawer can be pushed into the layer partition; the drawer is pushed in First reach the isolation position, release the drawer push control panel, under the action of the return spring, the drawer push control panel returns to its original position, the B-shaped guide groove drives the drive shaft of the drawer lock pin to move downward, the drawer lock pin protrudes downward, and inserts the isolation The position locking hole is locked, and the drawer cannot be pulled out or pushed in at this time; push the drawer again to push the push end of the control board, the drawer continues to push in to the test position, release the drawer and push the control board, and the drawer locking pin is inserted into the test position locking hole to realize Lock; similarly, it can also be pushed into the on position to lock. Press and hold the push end of the drawer push control board and not loose, you can directly push the drawer into the connected position in one step, and lock it after releasing the drawer push control board.

As an improvement of the utility model, the switch closing locking mechanism includes a closing locking mechanism housing, a closing locking pin and a cam; the lower end of the closing locking pin is connected from the closing locking mechanism housing and the drawer The hole in the bottom plate protrudes vertically to the layer partition, and the upper end of the closing lock pin is provided with an upward dial hole and a downward dial hole; The up-going claw and the down-going claw matched with the dial hole, the middle part of the end face of the cam is connected to the opening and closing connecting rod of the switch; the switch closing locking hole is provided on the layer partition plate, and the switching closing locking hole The position is corresponding to the closing lock pin, and the shape and size are suitable. When the switch is closed, the cam is driven to rotate forward by the switch opening and closing link, and the downward claw of the cam is inserted into the downward pulling hole, so that the closing locking pin is inserted downward into the closing locking hole of the switch, and the drawer cannot be pulled out at this time ;When the switch is opened, the cam is driven to rotate in the reverse direction through the opening and closing connecting rod of the switch, and the upward claw of the cam is inserted into the upward pulling hole, so that the closing locking pin is retracted upwards and disengaged from the closing locking hole of the switch. At this time, the drawer is released. locking.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Figure 1 is a schematic diagram of the installation of the drawer locking mechanism and the switch closing locking mechanism in the drawer.

Figure 2 is a front view of the drawer locking mechanism in the drawer.

FIG. 3 is a top view of FIG. 1 .

Fig. 4 is a perspective view of the drawer locking mechanism in an unlocked state.

Fig. 5 is a perspective view of the drawer locking mechanism in a locked state.

FIG. 6 is a schematic structural diagram of a layer spacer.

Fig. 7 is a perspective view 1 when the switch-on locking mechanism in the drawer is in a locked state.

Fig. 8 is a second perspective view when the switch closing and locking mechanism in the drawer is in a locked state.

Fig. 9 is a perspective view 1 when the closing and locking mechanism of the switch in the drawer is in an unlocked state.

Fig. 10 is a perspective view 2 when the closing and locking mechanism of the switch in the drawer is in an unlocked state.

In the figure: 1 drawer lock mechanism; 101 drawer lock pin; 102 drawer lock pin drive shaft; 103 drawer push control board; 103a B-shaped guide groove; 103b push end; 104 return spring; Bottom plate; 105b drawer locking pin drive shaft long groove; 2-layer spacer; 201 isolation position locking hole; 202 test position locking hole; 203 connection position locking hole; 204 switch closing locking hole; 3 switch closing locking mechanism; 301 Closing lock pin; 301a Upward dial hole; 301b Downward dial hole; 302 Cam; 302a Upward claw; 302b Downward claw; 303 Opening and closing link of switch; bottom plate.

Detailed ways

As shown in Figure 1 , the low-voltage drawer of the present invention includes a drawer 4 and a layer partition 2 below the drawer 4 , and a drawer locking mechanism 1 and a switch closing locking mechanism 3 are installed on the drawer bottom plate 401 .

As shown in Figures 2 and 3, the drawer locking mechanism 1 includes a drawer locking mechanism housing 105, a drawer locking pin 101, a drawer locking pin drive shaft 102, a drawer pushing control board 103 and a return spring 104; the housing bottom plate 105a is installed in the drawer On the bottom plate 401, the lower end of the drawer locking pin 101 stretches out from the hole of the housing bottom plate 105a and the drawer bottom plate 401 and points vertically to the layer spacer 2, and the drawer locking pin driving shaft 102 is horizontally inserted into the top of the drawer locking pin 101; the drawer advances the control The plate 103 is parallel to the drawer lock pin 101, its rear end is a push end 103b, and the front end is provided with a B-shaped guide groove 103a for driving the drawer lock pin 101 to move up and down, and the drawer lock mechanism housing 105 is symmetrically provided with a drawer lock pin drive on both sides. Shaft length slot 105b, the drawer lock pin drive shaft 102 is vertically inserted into the B-shaped guide groove 103a and the drawer lock pin drive shaft long slot 105b, the drawer lock pin drive shaft long slot 105b makes the drawer lock pin drive shaft 102 only in the long slot Moving up and down. Both ends of the return spring 104 are respectively connected to the drawer pushing control board 103 and the drawer locking mechanism housing 105 .

As shown in Figure 4, push the push end 103b of the drawer push control board 103, the drawer push control board 103 overcomes the pulling force of the return spring 104 and moves backward, and the B-shaped guide groove 103a on the drawer push control board 103 also moves backward accordingly , drive the drawer lock pin drive shaft 102 to slide upward along the B-shaped guide groove 103a and the drawer lock pin drive shaft long groove 105b, the drawer lock pin drive shaft 102 drives the drawer lock pin 101 to retract upward, and the drawer can be pushed into the interlayer Partition 2.

As shown in Figure 5, the drawer first reaches the isolation position during the push-in process, the drawer push control board 103 is released, and under the action of the return spring 104, the drawer push control board 103 returns to its original position, and the B-shaped guide groove 103a drives the drawer locking pin Drive shaft 102 moves down, and drawer locking pin 101 stretches out downwards, inserts isolation position locking hole 201 or testing position locking hole 202 or connecting position locking hole 203 to realize locking, and now drawer can't be pulled out or pushes in.

FIG. 6 is a schematic structural diagram of the layer spacer 2 . The layer partition 2 is provided with isolation position locking hole 201, test position locking hole 202 and connection position locking hole 203 in sequence along the drawer advancing direction, isolation position locking hole 201, test position locking hole 202 and connection position locking hole 203 are respectively corresponding to the positions of the drawer locking pins 101 and adapted in shape and size. The switch closing locking hole 204 is also provided on the layer partition plate 2 , and the switch closing locking hole 204 corresponds to the position and shape of the closing locking pin 301 .

As shown in Figures 7 to 10, the switch closing locking mechanism 3 includes a closing locking mechanism housing 304, a closing locking pin 301 and a cam 302; The hole in the bottom plate 401 protrudes vertically to point to the layer partition plate 2, and the upper end of the closing lock pin 301 is provided with an upward dialing hole 301a and a downward dialing hole 301b; The hole 301b is matched with the up-going claw 302a and the down-going claw 302b, and the middle part of the end face of the cam 302 is connected to the switch opening and closing link 303 .

Figure 7 and Figure 8 show that the switch closing locking mechanism 3 is in the locked state. When the switch is closing, the opening and closing link 303 of the switch drives the cam 302 to rotate in the forward direction, and the downward movement claw 302b of the cam 302 is inserted into the downward movement hole 301b , insert the closing lock pin 301 downward into the closing locking hole of the switch, and the drawer cannot be pulled out at this time.

Figures 9 and 10 show that the switch closing and locking mechanism 3 is in the unlocked state. When the switch is opened, the opening and closing link 303 of the switch drives the cam 302 to rotate in reverse, and the upward claw 302a of the cam 302 is inserted into the upward toggle hole 301a During the process, the closing lock pin 301 is retracted upwards to disengage from the closing locking hole of the switch, and the drawer is unlocked at this time.

In addition to the above embodiments, the utility model can also have other implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the utility model.

Claims (2)

1. A low-voltage drawer cabinet, comprising a drawer and a layer partition below the drawer, a drawer locking mechanism and a switch closing locking mechanism are installed on the bottom plate of the drawer, it is characterized in that the drawer locking mechanism includes a drawer locking mechanism Mechanism housing, drawer locking pin, drawer locking pin driving shaft, drawer push control board and return spring; the lower end of the drawer locking pin protrudes from the hole of the drawer locking mechanism housing and the drawer bottom plate and points vertically to the The layer partition, the drive shaft of the drawer locking pin is inserted horizontally into the upper part of the drawer locking pin; The drawer lock pin moves up and down in the B-shaped guide groove, the drive shaft of the drawer lock pin is vertically inserted into the B-shaped guide groove, and the two ends of the return spring are respectively connected to the drawer push control board and the drawer lock mechanism On the housing; the layer partition plate is provided with isolation position locking holes, test position locking holes and connection position locking holes in sequence along the direction in which the drawer is pushed, and the isolation position locking holes, test position locking holes and connection position The positions of the through-position locking holes are respectively corresponding to the positions of the drawer locking pins, and the shapes and sizes are adapted. 2. A low-voltage drawer cabinet according to claim 1, wherein the switch closing locking mechanism comprises a closing locking mechanism housing, a closing locking pin and a cam; the lower end of the closing locking pin is from The holes of the closing locking mechanism housing and the bottom plate of the drawer protrude vertically to the layer partition, and the upper end of the closing locking pin is provided with an upward dialing hole and a downward dialing hole; the circumference of the cam There are up-going claws and down-going claws respectively adapted to the up-going dial hole and the down-going dial hole, and the middle part of the end face of the cam is connected to the opening and closing link of the switch; a switch is provided on the layer partition plate. Closing locking hole, the position of the switch closing locking hole corresponds to the closing locking pin, and the shape and size match.

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