Low pressure drawer cabinet with trap mechanism

Abstract

The utility model relates to a low pressure drawer cabinet with trap mechanism contains a plurality of vertical connection drawer shell, the drawer of sliding fit in the drawer shell, be equipped with trap mechanism between the drawer shell and drawer, the trap mechanism includes the two guide strips that are equipped respectively in the drawer shell opposite inner wall even, vertical sliding fit transmission strip that vertical sliding fit on the drawer, through setting up guide strip, through pulling the drawer handle, when the first transmission wheel rolls on the inclined strip, T character shape slider is guided to move down under the first T character shape guide channel under the action of gravity, first transmission wheel, second transmission wheel, transmission strip, trap synchronous move down, make the trap block up the through -hole and separate the vertical row into the wire cover and vertical row into the wire cover, improve the security of the electric appliance in the maintenance drawer, avoid the problem that the slider group adopting small slider series connection is deadlocked or damaged in the track.

Description

Technical Field

[0001] This utility model relates to the field of low-pressure drawer cabinet technology, and in particular to a low-pressure drawer cabinet with a hinged door mechanism. Background Technology

[0002] For a long time, due to the low rated voltage level, most low-voltage switchgear lacked special protection measures for electrical isolation. Furthermore, low-voltage drawers, due to their inherent function (drawers of the same current capacity and height are interchangeable), are frequently pulled out. Generally, in low-voltage drawer switchgear, after a single drawer circuit is pulled out, there are no corresponding isolation measures at the live conductor. If an operator makes a mistake and touches a live vertical conductor, a major safety accident can occur.

[0003] A search revealed a novel low-voltage drawer cabinet with a hinged door mechanism, publication number CN212695591U. The cabinet includes a main frame and drawer modules stacked within the main frame. Each drawer module comprises a cabinet sheet metal part, drawers, and a hinged door mechanism. The hinged door mechanism includes a door body, a door guide rod, a slider rail, and a slider assembly. The slider rail has an L-shaped bend, with its upper section fitted to the side of the vertical plate and its lower section fitted to the side of the bottom plate. A slider assembly is located within the slider rail. One side of the door body connects to the upper section of the slider assembly, and the other side of the door body is fitted onto the door guide rod. The door guide rod and the slider assembly are located on opposite sides of the insertion port. Once the drawer is pulled out, it automatically retracts to cover the vertically arranged cable tray, completely isolating the live copper conductor from the outside environment and effectively ensuring the safety of the operator.

[0004] When the device in the disclosed patent is in use, the opening of the door depends entirely on the pins on the drawer side wall pushing the slider group composed of multiple small sliders connected in series. There are cumulative tolerances and frictional losses between the multiple sliders, which can easily lead to transmission jamming and asynchrony. Once the slider group gets stuck or damaged inside the track. Utility Model Content

[0005] In response to the technical problems in existing patents, where the opening of the door relies entirely on the pins on the drawer sidewall to push a slider group consisting of multiple small sliders connected in series, resulting in cumulative tolerances and frictional losses among the sliders, which can easily lead to transmission jamming and asynchrony, and the slider group getting stuck or damaged inside the track, this utility model provides a low-pressure drawer cabinet with a door mechanism.

[0006] The technical solution adopted by this utility model is: a low-pressure drawer cabinet with a door mechanism, comprising: multiple drawer shells connected vertically in sequence, and drawers slidably fitted in the drawer shells, wherein a door mechanism is provided between the drawer shells and the drawers;

[0007] The door mechanism includes two guide bars respectively provided on opposite inner walls of the drawer shell, a transmission bar vertically slidably fitted on the drawer, a door fixed on one side of the transmission bar, and a first transmission wheel and a second transmission wheel rotatably and vertically slidably fitted on the side of the drawer corresponding to the transmission bar and the guide bar. The transmission bar is located above the guide bar, and the first transmission wheel and the second transmission wheel are located vertically between the transmission bar and the guide bar.

[0008] Furthermore, the drawer shell is a box structure, with an insertion port on one side and a through hole on the other side. A vertical cable tray corresponding to the through hole is located on one side of the drawer shell, and the door corresponds to the vertical cable tray. Drawer slides are provided between the inner wall of the drawer shell and the drawer.

[0009] Furthermore, the drawer has sealing protrusions on both sides, which correspond to the insertion port. A movable pin is connected to one side of the drawer, which corresponds to the through hole and the vertical cable tray.

[0010] Furthermore, the guide bar includes a first horizontal bar located on the inner wall of the drawer shell and near the insertion port, a second horizontal bar located on the inner wall of the drawer shell and away from the insertion port, and a diagonal bar connecting the first horizontal bar and the second horizontal bar. The height of the diagonal bar gradually increases from the end connected to the first horizontal bar to the end connected to the second horizontal bar.

[0011] Furthermore, each of the drawers has a first T-shaped guide channel on its inner side, and a T-shaped slider is slidably fitted in the first T-shaped guide channel. The first transmission wheel and the second transmission wheel are rotatably fitted on one side of the T-shaped slider.

[0012] Furthermore, the drawer has multiple second T-shaped guide channels on both sides, the transmission bar has a U-shaped structure, and the inner side of the transmission bar has a T-shaped protrusion corresponding to the second T-shaped guide channel. The T-shaped protrusion slides in the second T-shaped guide channel, and the drawer has a handle on one side.

[0013] The beneficial effects of this utility model are:

[0014] By setting guide bars, when the drawer handle is pulled, the T-shaped slider moves downward under the guidance of the first T-shaped guide groove due to gravity when the first drive wheel rolls on the inclined bar. The first drive wheel, the second drive wheel, the drive bar, and the valve move downward synchronously, so that the valve blocks the through hole and separates the moving plug from the vertical cable tray, improving the safety of the electrical appliances in the drawer and avoiding the problem of the slider group with small sliders connected in series getting stuck or damaged inside the track.

[0015] By setting a second drive wheel, it is easier to avoid the first drive wheel supporting the drive bar, which would cause the first drive wheel to rub against the bottom surface of the drive bar when rolling on the guide bar, increasing the rolling resistance of the first drive wheel on the drive bar, and thus improving the convenience of pushing and pulling drawers. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the drawer shell structure in this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the guide bar structure in this utility model;

[0020] Figure 5 This is a bottom view of this utility model.

[0021] The diagram is marked as follows:

[0022] 1. Drawer shell; 100. Top plate; 101. Insertion port; 102. Through hole; 103. Vertical cable tray; 104. Drawer slide; 2. Drawer; 201. Sealing protrusion; 202. Moving pin; 203. First T-shaped guide channel; 204. T-shaped slider; 205. Second T-shaped guide channel; 206. Handle; 3. Door mechanism; 300. Second drive wheel; 301. Guide bar; 3011. First horizontal bar; 3012. Second horizontal bar; 3013. Diagonal bar; 302. Drive bar; 303. Door; 304. First drive wheel; 305. T-shaped protrusion. Detailed Implementation

[0023] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The following is in conjunction with the appendix Figure 1-5 The present invention will be further described below.

[0026] To address the problems existing in the background art, this application proposes the following technical solution:

[0027] A low-pressure drawer cabinet with a door mechanism includes: multiple drawer shells 1 connected vertically in sequence, drawers 2 slidably fitted inside the drawer shells 1, a door mechanism 3 between the drawer shells 1 and the drawers 2, and a top plate 100 on the upper side of one of the drawer shells 1.

[0028] The door mechanism 3 includes two guide bars 301 respectively provided on opposite inner walls of the drawer shell 1, a transmission bar 302 vertically slidingly engaged with the drawer 2, a door 303 fixed to one side of the transmission bar 302, and a first transmission wheel 304 and a second transmission wheel 300 rotatably and vertically slidingly engaged with the side of the drawer 2 corresponding to the transmission bar 302 and the guide bar 301. There is a gap between the first transmission wheel 304 and the second transmission wheel 300. The transmission bar 302 is located above the guide bar 301, and the first transmission wheel 304 and the second transmission wheel 300 are located vertically between the transmission bar 302 and the guide bar 301.

[0029] Furthermore, the drawer shell 1 has a box structure. One side of the drawer shell 1 has an insertion port 101 and a through hole 102. One side of the drawer shell 1 has a vertical cable tray 103 corresponding to the through hole 102. The door 303 corresponds to the vertical cable tray 103. The inner wall of the drawer shell 1 and the drawer 2 are both provided with drawer slide rails 104, which facilitates the improvement of the stability of the drawer 2 sliding in the drawer shell 1 through the drawer slide rails 104.

[0030] Furthermore, each of the drawer 2 has a sealing protrusion 201 on opposite sides, which corresponds to the insertion port 101. A movable pin 202 is connected to one side of the drawer 2, which corresponds to the through hole 102 and the vertical cable tray 103.

[0031] Furthermore, the guide bar 301 includes a first horizontal bar 3011 located on the inner wall of the drawer shell 1 and near the insertion port 101, a second horizontal bar 3012 located on the inner wall of the drawer shell 1 and away from the insertion port 101, and a diagonal bar 3013 connecting the first horizontal bar 3011 and the second horizontal bar 3012. The height of the diagonal bar 3013 gradually increases from the end connected to the first horizontal bar 3011 to the end connected to the second horizontal bar 3012.

[0032] Furthermore, each drawer 2 has a first T-shaped guide channel 203 on its inner side. A T-shaped slider 204 is slidably fitted inside the first T-shaped guide channel 203. The first transmission wheel 304 and the second transmission wheel 300 are rotatably fitted on one side of the T-shaped slider 204, which facilitates the sliding of the T-shaped slider 204 through the first T-shaped guide channel 203 and improves the stability of the sliding of the T-shaped slider 204.

[0033] Furthermore, drawer 2 has multiple second T-shaped guide channels 205 on both sides, and the transmission bar 302 has a U-shaped strip structure. The inner side of the transmission bar 302 has a T-shaped protrusion 305 corresponding to the second T-shaped guide channel 205. The T-shaped protrusion 305 slides in the second T-shaped guide channel 205. A handle 206 is provided on one side of drawer 2 to facilitate the sliding of the T-shaped protrusion 305 through the second T-shaped guide channel 205, thereby improving the stability of the sliding of the T-shaped protrusion 305 and the transmission bar 302.

[0034] Working principle: When drawer 2 is pulled by handle 206, the first drive wheel 304 rolls on the second horizontal bar 3012 until the movable pin 202 is pulled out a certain distance from the vertical cable tray 103 and the through hole 102. Then, the first drive wheel 304 rolls from the second horizontal bar 3012 to the inclined bar 3013. When the first drive wheel 304 rolls on the inclined bar 3013, the T-shaped slider 204 moves downward under the guidance of the first T-shaped guide channel 203 due to gravity. The first drive wheel 304, the second drive wheel 300, the drive bar 302, and the valve 303 move downward synchronously, so that the valve 303 blocks the through hole 102, separating the movable pin 202 from the vertical cable tray 103, improving the safety of the electrical appliances in the drawer 2. Then, the first drive wheel 304 rolls on the second horizontal bar 3012 and the through hole 102. A drive wheel 304 rolls from the inclined bar 3013 to the first horizontal bar 3011. The T-shaped slider 204, the first drive wheel 304, the second drive wheel 300, the drive bar 302, and the valve 303 stop moving downwards. By setting the second drive wheel 300, it is easy to avoid the first drive wheel 304 supporting the drive bar 302, which would cause the first drive wheel 304 to rub against the bottom surface of the drive bar 302 when it rolls on the guide bar 301, increasing the rolling resistance of the first drive wheel 304 on the drive bar 302 and improving the convenience of pushing and pulling the drawer 2. Similarly, when the drawer 2 is pushed in, when the first drive wheel 304 rolls on the inclined bar 3013, the valve 303 moves upwards to open the through hole 102, so that the movable pin 202 and the vertical cable tray 103 can be connected.

[0035] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0036] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A low-pressure drawer cabinet with a hinged door mechanism, characterized in that, include: Multiple vertically connected drawer shells (1) and drawers (2) slidably fitted inside the drawer shells (1), with a door mechanism (3) provided between the drawer shells (1) and the drawers (2). The valve mechanism (3) includes two guide bars (301) respectively provided on opposite inner walls of the drawer shell (1), a transmission bar (302) vertically slidably fitted on the drawer (2), a valve (303) fixed on one side of the transmission bar (302), and a first transmission wheel (304) and a second transmission wheel (300) rotatably and vertically slidably fitted on the side of the drawer (2) corresponding to the transmission bar (302) and the guide bar (301). The transmission bar (302) is located above the guide bar (301), and the first transmission wheel (304)... The second transmission wheel (300) is located vertically between the transmission bar (302) and the guide bar (301). The drawer shell (1) is a box structure. The drawer shell (1) has an insertion port (101) on one side and a through hole (102) on one side. The drawer shell (1) has a vertical cable tray (103) on one side corresponding to the through hole (102). The door (303) corresponds to the vertical cable tray (103). The drawer shell (1) has drawer slides (104) between its inner wall and the drawer (2).

2. A low-pressure drawer cabinet with a hinged door mechanism according to claim 1, characterized in that, The drawer (2) has sealing protrusions (201) on both sides, the sealing protrusions (201) correspond to the insertion port (101), and a movable pin (202) is connected to one side of the drawer (2), the movable pin (202) corresponds to the through hole (102) and the vertical cable tray (103).

3. A low-pressure drawer cabinet with a hinged door mechanism according to claim 1, characterized in that, The guide bar (301) includes a first horizontal bar (3011) located on the inner wall of the drawer shell (1) and near the insertion port (101), a second horizontal bar (3012) located on the inner wall of the drawer shell (1) and away from the insertion port (101), and a diagonal bar (3013) connecting the first horizontal bar (3011) and the second horizontal bar (3012). The height of the diagonal bar (3013) gradually increases from the end connected to the first horizontal bar (3011) to the end connected to the second horizontal bar (3012).

4. A low-pressure drawer cabinet with a hinged door mechanism according to claim 1, characterized in that, The drawer (2) is provided with a first T-shaped guide channel (203) on the inner side of each drawer. A T-shaped slider (204) is slidably fitted in the first T-shaped guide channel (203). The first transmission wheel (304) and the second transmission wheel (300) are rotatably fitted on one side of the T-shaped slider (204).

5. A low-pressure drawer cabinet with a hinged door mechanism according to claim 1, characterized in that, The drawer (2) is provided with multiple second T-shaped guide channels (205) on both sides. The transmission bar (302) is a U-shaped bar structure. The inner side of the transmission bar (302) is provided with a T-shaped protrusion (305) corresponding to the second T-shaped guide channel (205). The T-shaped protrusion (305) slides in the second T-shaped guide channel (205).

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