CN219659272U - Drawer assembly and low-voltage drawer cabinet - Google Patents

Abstract

The present disclosure relates to a drawer assembly and a low pressure drawer cabinet. The drawer assembly includes a fixed portion and an extractable portion that is extractable mounted in the fixed portion. The extractable part comprises: the front section of the drawer is provided with an observation window; a drawer rear section movably disposed between the fixed portion and the drawer front section; and an indicating structure including an indicating head exposed at least partially in the viewing window, the indicating structure connecting the drawer front section and the drawer rear section, converting movement of the drawer rear section between the fixed portion and the drawer front section into swinging of the indicating head in the viewing window to indicate a position of the drawer rear section. According to the drawer assembly disclosed by the utility model, the movement of the rear drawer section between the fixed part and the front drawer section can be converted into the swinging of the indicating head in the observation window through the indicating structure, so that the position of the rear drawer section can be indicated through the observation window of the front drawer section in the state that the extractable part is closed.

Description

Drawer assembly and low-voltage drawer cabinet

Technical Field

Embodiments of the present disclosure relate generally to the field of power transmission, and in particular, to drawer assemblies and low-voltage drawer cabinets.

Background

The 0 low voltage drawer cabinet is also called a drawer switch and comprises a primary circuit for conveying electric energy and a secondary circuit for monitoring and controlling the primary circuit. The electric elements of the primary loop and the secondary loop are arranged in a drawer which can be pulled out to form a functional unit which can complete a certain type of power supply task. The low-voltage drawer cabinet comprises three working states of an isolation position, a test position and a working position.

When the isolation position is adopted, the primary loop and the secondary loop are disconnected; when the test position is tested, the secondary circuit is connected with the 5-way circuit, and the primary circuit is disconnected; when in working position, the primary loop and the secondary loop are both connected. The existing low-voltage drawer cabinet cannot indicate the working state of the drawer in the drawer drawing-in state.

Disclosure of Invention

Embodiments of the present disclosure provide a drawer assembly and low-pressure drawer cabinet that aim to address one or more of the problems 0 above, as well as other potential problems.

According to a first aspect of the present disclosure, there is provided a drawer assembly including a fixed portion and an extractable portion extractable mounted in the fixed portion, the extractable portion including: the front section of the drawer is provided with an observation window; a drawer rear section movably arranged at

Between the fixed portion and the drawer front; and an indicating structure including an indicating head exposed at least partially in the viewing window 5, the indicating structure connecting the drawer front section and the drawer rear section, converting movement of the drawer rear section between the fixed portion and the drawer front section into swinging of the indicating head in the viewing window to indicate a position of the drawer rear section. According to the drawer assembly disclosed by the embodiment of the disclosure, the movement of the rear drawer section between the fixed part and the front drawer section can be converted into the swinging of the indicating head in the observation window through the indicating structure, so that the position of the rear drawer section can be indicated through the observation window of the front drawer section in the state that the extractable part is closed.

In some embodiments, the indication structure further comprises: the indicating plate is rotationally connected with the front section of the drawer, and the indicating head is fixedly arranged at one end of the indicating plate; the driving plate is fixedly connected with the rear section of the drawer and is in sliding fit with the other end of the indicating plate, so that the driving plate drives the indicating plate to rotate relative to the front section of the drawer when moving between the fixing part and the front section of the drawer along with the rear section of the drawer.

In some embodiments, the drive plate is provided with a drive slot, and the other end of the indicator plate is provided with a mating post, and the mating post is limited in the drive slot.

In some embodiments, the driving groove includes an inclined guide section provided inclined to a moving direction of the drawer rear section between the drawer front section and the fixed portion.

In some embodiments, the driving groove further includes a vertical guide section provided at one end or both ends of the inclined guide section, the vertical guide section being disposed parallel to a moving direction of the drawer rear section between the drawer front section and the fixed portion.

In some embodiments, the location of the pivotal connection of the indicator plate to the drawer front is between the indicator head and the mating post.

In some embodiments, the drive plate is provided with a drive post and the indicator plate is provided with a mating slot in which the drive post is retained.

In some embodiments, the mating groove includes an inclined guide section disposed inclined to a moving direction of the drawer rear section between the drawer front section and the fixed portion.

In some embodiments, the mating groove further includes a vertical guide section provided at one or both ends of the inclined guide section, the vertical guide section being provided parallel to a moving direction of the drawer rear section between the drawer front section and the fixed portion.

In some embodiments, the angled guide section of the drive slot is a straight or curved section.

In some embodiments, the angled guide section of the mating groove is a straight or curved section.

In some embodiments, the indicator head is an arcuate plate-like structure that extends partially into the viewing window.

In some embodiments, the viewing window comprises: the observation hole is formed in the surface of the front section of the drawer; a transparent cover for closing the observation hole; wherein, the transparent cover includes arc refracting surface.

In some embodiments, the curved refractive surface comprises a curved refractive top surface and a curved refractive bottom surface.

In some embodiments, the fixed part is provided with a primary static insert and a secondary static insert, and the rear section of the drawer is provided with a primary movable insert and a secondary movable insert; the indicating head is provided with an isolation position mark, a test position mark and a working position mark; when the rear section of the drawer moves to a position where the primary movable plug-in is inserted with the primary static plug-in and the secondary movable plug-in is inserted with the secondary static plug-in, the indicating head swings to a position where the working position mark is exposed out of the observation window; when the rear section of the drawer moves to a position where the primary movable insert is separated from the primary static insert and the secondary movable insert is inserted into the secondary static insert, the indicating head swings to a position where the test position mark is exposed out of the observation window; when the rear section of the drawer moves to a position where the primary movable insert is separated from the primary static insert and the secondary movable insert is separated from the secondary static insert, the indicating head swings to a position where the isolation position mark is exposed out of the observation window.

According to a second aspect of the present disclosure, there is provided a low voltage drawer cabinet comprising: the drawer assembly according to the first aspect.

Drawings

The above, as well as additional purposes, features, and advantages of embodiments of the present disclosure will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown by way of example, and not by way of limitation.

Fig. 1 illustrates a perspective view of a portion of a low pressure drawer cabinet including the extractable portion and the fixed portion described above, according to an embodiment of the present disclosure.

Fig. 2 illustrates a perspective view of an extractable part according to an embodiment of the present disclosure.

Fig. 3 illustrates a perspective view of a portion of an extractable portion including an indicating structure according to an embodiment of the present disclosure.

Fig. 4 illustrates a perspective view of an indication structure according to an embodiment of the present disclosure.

Fig. 5 shows a schematic installation view of a viewing window according to an embodiment of the present disclosure.

Fig. 6 illustrates a schematic structural view of a transparent cover according to an embodiment of the present disclosure.

Fig. 7 illustrates a perspective view of a fixed portion according to an embodiment of the present disclosure.

Fig. 8 illustrates a perspective view of an internal structure of an extractable part according to an embodiment of the present disclosure.

FIG. 9 shows a schematic diagram of an isolation position marker, a test position marker, a work position marker, according to an embodiment of the present disclosure.

FIG. 10-A illustrates a side view of the extractable portion with a drawer assembly in an isolated position according to an embodiment of the present disclosure.

FIG. 10-B illustrates a schematic view of the position of the indicator head in the viewing window when the drawer assembly is in the isolated position, according to an embodiment of the present disclosure.

FIG. 11-A illustrates a side view of the extractable portion of the drawer assembly in a testing position, according to an embodiment of the present disclosure.

FIG. 11-B illustrates a schematic view of the position of the indicator head in the viewing window when the drawer assembly is in the test position, according to an embodiment of the present disclosure.

Fig. 12-a illustrates a side view of an extractable portion of a drawer assembly in an operative position according to an embodiment of the present disclosure.

Fig. 12-B illustrates a schematic view of the position of the indicator head in the viewing window when the drawer assembly is in the operative position, according to an embodiment of the present disclosure.

Fig. 13 illustrates a perspective view of a portion of a low pressure drawer cabinet including the drawer described above, according to an embodiment of the present disclosure.

Like or corresponding reference characters indicate like or corresponding parts throughout the several views.

Detailed Description

Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present disclosure are illustrated in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The term "comprising" and variations thereof as used herein means open ended, i.e., "including but not limited to. The term "or" means "and/or" unless specifically stated otherwise. The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment. The term "another embodiment" means "at least one additional embodiment". The terms "upper," "lower," "front," "rear," and the like, as used herein, refer to a place or position relationship based on the orientation or position relationship shown in the drawings, and are merely for convenience in describing the principles of the present disclosure, and do not refer to or imply that the elements referred to must have a particular orientation, be configured or operated in a particular orientation, and thus should not be construed as limiting the present disclosure.

As described above, the low-voltage drawer cabinet includes the primary circuit for supplying electric power and the secondary circuit for monitoring and controlling the primary circuit. The electric elements of the primary loop and the secondary loop are arranged in a drawer which can be pulled out to form a functional unit which can complete a certain type of power supply task. The low-voltage drawer cabinet comprises three working states of an isolation position, a test position and a working position. When the isolation position is adopted, the primary loop and the secondary loop are disconnected; when the test position is tested, the secondary circuit is connected, and the primary circuit is disconnected; when in working position, the primary loop and the secondary loop are both connected. The low-voltage drawer cabinet requires the extractable part to be extracted to be set in the isolation position, and the drawer to be inserted to be set in the working position. The isolation position is realized by connecting the secondary circuit after the extractable part is extracted.

The conventional proposal drives the indicating device on the drawer to indicate the position of the drawer through a driving device fixed on the bottom plate of the drawer. Such indication structures are relatively complex, indication is not clear enough, and the drawer position cannot be obtained without opening the drawer. In accordance with an embodiment of the present disclosure, a drawer assembly is provided for translating movement of a drawer rear section between a fixed portion and a drawer front section into swinging of an indicator head in a viewing window to indicate a position of the drawer rear section. In the state that the drawer is closed, the user can still observe the current position of the rear section of the drawer through the indicating head in the observation window.

Fig. 1 illustrates a perspective view of a portion of a low pressure drawer cabinet including the extractable portion and the fixed portion described above, according to an embodiment of the present disclosure. The drawer assembly 10 may include a fixed portion 110 and an extractable portion 120 that is extractable and mounted in the fixed portion 110. The fixed portion 110 has an opening for the extractable portion 120 to go in and out, and the fixed portion 110 and the extractable portion 120 may be engaged by means such as a slider and a rail, a pulley and a rail, and the like. Withdrawing the extractable portion 110 from the fixed portion 120, the drawer assembly 10 being in a door-open state; pushing the extractable part 120 into the fixed part 110 can close the opening of the fixed part 110, and the drawer is in a closed state.

In particular, as shown in fig. 2 to 4, the extractable part 120 includes a drawer front 1210 provided with a viewing window 12110, a drawer rear 1220 movably provided between the fixed part 110 and the drawer front 1210, and an indication for indicating the position of the drawer rear 1220

Structure 1230. The drawer front 1210 has a drawer panel that closes the opening of the fixed portion 110 when the extractable portion 120 is pushed 5 into the fixed portion 110. For ease of viewing, the viewing window 12110 is typically provided on the drawer panel. The indicating structure 1230 includes an indicating head 12311 at least partially exposed in the viewing window 2110. In addition, the indicating structure 1230 connects the drawer front section 1210 and the drawer rear section 1220, converting movement of the drawer rear section 1220 between the fixed portion 110 and the drawer front section 1210 into oscillation of the indicating head 12311 in the viewing window 12110 at 0. In this way, the user can still pass through the viewing window 12110 in the drawer-closed state

The indicating head 12311 in (c) observes the current position of the rear section of the drawer.

The indication structure 1230 may include an indication plate 12310 and a driving plate 12320. As shown in fig. 3, one of the extractable portions 120 including the indicating structure 1230 according to an embodiment of the disclosure

A perspective view of a portion. The indication plate 12310 is rotatably connected with the bottom plate of the drawer front section 1210, and the indication head 12311 is fixedly arranged at one end of the indication plate 12310, and the other end of the indication plate 12310 is in sliding fit with the driving plate 12320. The end of the drawer front section 1210 facing the drawer rear section 1220 is provided with a hole for the driving plate 12320 to pass through, one end of the driving plate 12320 is fixedly connected with the drawer rear section 1220, and the other end extends towards the drawer front section 1210 and slides with the indication plate through the hole

And (5) moving fit. The driving plate 12320 can be synchronously moved between the drawer front 1210 and the fixed 0 portion 110 with the drawer rear 1220, thereby driving the other end of the indication plate 12310 to swing such that the indication plate 12310 rotates with respect to the drawer front 1210. During this process, drawer front 1210 is stationary relative to stationary portion 110 and only the indicator head at a section of indicator plate 12310 swings within viewing window 12110. The driving board 12320 and the indication board 12310 may be mounted

At different heights, interference with movement of the drawer rear 1220 is avoided. For example, the drive plate 123205 can be positioned higher than the indicator plate 12310 to avoid interference with movement of the drawer rear 1220 and rotation of the indicator plate 12310.

The driving plate 12320 may be provided with a driving groove 12321, and the other end of the indication plate 12310 may be provided with a coupling post 12312. The driving groove 12321 may be a hole through which the mating post passes, or may be a groove formed toward the indication plate 12310. The mating post 12312 can be a boss pin, the boss end of the pin is located above the drive plate, and the other end of the pin passes through the drive slot and is fixed to the other end of the indicator plate 12310. When the driving plate 12320 moves with the drawer rear 1220, the mating posts 12312 are retained in the driving slots 12321 and slide along the driving slots 12321.

As shown in fig. 4, the driving groove 12321 may include an inclined guide section a provided inclined to the moving direction of the drawer rear section 1220 between the drawer front section 1210 and the fixed portion 110. The drive slot may comprise 1 inclined guide section a of longer length, or may comprise a plurality of inclined guide sections a of shorter length of different inclination magnitudes.

In some embodiments, the driving groove 12321 further includes a vertical guide section b provided at one or both ends of the inclined guide section a. The vertical guide section b is disposed parallel to the moving direction of the drawer rear section 1220 between the drawer front section 1210 and the fixed portion 110, without obstructing the movement of the drawer rear section 1220 between the drawer front section 1210 and the fixed portion 110, facilitating the start of the moving operation of the drawer rear section 1220.

In some embodiments, the location 12313 where the indicator plate 12310 is rotatably coupled to the drawer front 1210 is between the indicator head 12311 and the mating post 12312. The indicating head 12311 and the mating post 12312 are located at two ends of the position 12312, respectively, so that the swing amplitude ratio of the mating post to the indicating head can be conveniently adjusted as required.

The sliding fit structure of the drive plate 12320 and the index plate 12310 may be interchanged. For example, in some embodiments, a drive post is provided on the drive plate 12320 and a mating slot is provided on the indicator plate 12310. The matching groove can be a hole for the driving column to pass through, or can be a groove formed towards the driving plate. When the drive plate moves with the drawer rear 1220, the drive posts are retained in the mating slots for sliding movement.

The engagement groove may include an inclined guide section provided obliquely to the moving direction of the drawer rear section 1220 between the drawer front section 1210 and the fixed portion 110. The mating groove may include 1 inclined guide section of longer length, or may include a plurality of inclined guide sections of shorter length of different inclination magnitudes.

In some embodiments, the mating groove further comprises a vertical guide section provided at one or both ends of the inclined guide section a. The vertical guide section is disposed parallel to the moving direction of the drawer rear section 1220 between the drawer front section 1210 and the fixed portion 110, so that the movement of the drawer rear section 1220 between the drawer front section 1210 and the fixed portion 110 is not hindered, and the start of the moving operation of the drawer rear section 1220 is facilitated.

In some embodiments, the inclined guide section a is a straight section, and in other embodiments the guide section a may be a curved section. As long as the guide track of the guide section a has a displacement of the rear section of the drawer

The moving direction and the moving direction perpendicular to the rear section of the drawer. The trajectory perpendicular to the moving direction of the rear section of the 5 drawers is such that when the driving plate and the indicating plate slide in cooperation, the end of the driving indicating plate is displaced perpendicular to the moving direction of the rear section of the drawers, thereby driving the indicating plate 12310 to rotate.

In some embodiments, the indicator head 12311 is an arcuate plate-like structure that extends partially into the viewing window 12110. The arcuate plate-like structure is similar to the swing track of the indicating head, and can reduce interference with other structures such as the observation window 12110 when the indicating head 12311 swings.

Specifically, the viewing window 12110 may include a viewing aperture 12111. As shown in fig. 5, the viewing aperture is generally open at a surface of the drawer front 1210, for example, at a drawer panel. A transparent cover 12112 is mounted in the observation hole 12111. Transparent cover 12112 is formed from drawer front 1210

The inner part of the transparent cover 12112 passes through the observation hole 12111, and the frame at the bottom of the transparent cover 12112 is fixed with the inner surface 5 of the drawer front section 1210 through double-sided adhesive tape 12114 so as to seal the observation hole 12111. Therefore, dust and the like can be prevented from entering through the observation port, and the insulation environment inside the drawer assembly is damaged.

In some embodiments, the transparent cover 12112 may include an arcuate refractive surface. As shown in FIG. 6, the curved refractive surface includes a curved refractive top surface 12112a on top of a transparent cover 12112

And an arcuate refracting bottom surface 12112b at the bottom of the transparent cover 12112. In this way, the viewing angle range over which the viewing window 0 can be viewed can be increased.

In some embodiments, the drawer assembly may be applied to a low-pressure drawer cabinet. To more clearly describe the use of drawer assemblies in low-pressure drawers cabinets, fig. 13 illustrates a perspective view of a portion of a low-pressure drawer cabinet 1 incorporating drawer assembly 10 described above, in accordance with an embodiment of the present disclosure. Lower part(s)

The partial structure of the low pressure drawer cabinet will be described in detail with reference to fig. 7 to 12. As shown in fig. 7, the 5-fixing portion 110 is provided with a primary static insert 21a and a secondary static insert 21b. As shown in figure 8 of the drawings,

the drawer rear 1220 is provided at its end with a primary movable insert 21b and a secondary movable insert 22b. The primary static plug-in 21a and the primary movable plug-in 21b are oppositely arranged and are used for controlling the on-off of a primary loop of the low-voltage drawer cabinet. The secondary static plug-in 22a and the secondary static plug-in 22b are arranged oppositely and are used for controlling the on-off of a secondary circuit of the low-voltage drawer cabinet. When the drawer rear section 1220 moves towards the fixed part 110, the primary movable insert 21b and the secondary movable insert 22b are respectively close to the corresponding primary static insert 21a and secondary static insert 22a, so that the moving operation of the drawer rear section can be realized, and the low-voltage drawer cabinet can be controlled to be switched between different working states. The insertion position of the primary movable insert 21b and the primary stationary insert 21a is closer to the fixed portion 110 than the insertion position of the secondary movable insert 22b and the secondary stationary insert 22 a. The indicating head 12311 is provided with an isolation position mark 12311a, a test position mark 12311b, and a work position mark 12311c as shown in fig. 9. The drawer assembly 10 can indicate the current position of the rear drawer section 1220 through the indicating structure 1230 in the closed state of the drawer assembly 10, so that the working state of the low-pressure drawer cabinet is known. Specifically, as shown in fig. 10-a, when the drawer rear 1220 is moved to a position where the primary movable insert 21B is inserted into the primary stationary insert 21a and the secondary movable insert 22B is inserted into the secondary stationary insert 22a, the indicating head 12311 in fig. 10-B swings to a position where the working position mark 12311c is exposed to the observation window 12110. As shown in fig. 11-a, when the drawer rear 1220 is moved to a position where the primary movable insert 21B is separated from the primary stationary insert 21a and the secondary movable insert 22B is inserted into the secondary stationary insert 22a, the indicating head 12311 in fig. 11-B swings to a position where the test position mark 12311B is exposed to the observation window 12110. As shown in fig. 12-a, when the drawer rear 1220 is moved to a position where the primary movable insert 21B is separated from the primary stationary insert 21a and the secondary movable insert 22B is separated from the secondary stationary insert 22a, the indicating head 12311 in fig. 12-B swings to a position where the separation position mark 12311a is exposed to the observation window 12110.

With the above embodiment, the movement of the drawer rear section between the fixed portion and the drawer front section is converted into the swing of the indicating head in the observation window to indicate the position of the drawer rear section. In the state that the drawer is closed, the user can still observe the current position of the rear section of the drawer through the indicating head in the observation window. The observation window is sealed through the transparent cover, so that electric arcs generated when the plug-in unit is closed are prevented from being sprayed out, and dust is prevented from entering the drawer to damage the insulation environment. The arc refraction top surface and the arc refraction bottom surface of the transparent cover can widen the visual range of the observation window.

While several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are example forms of implementing the claims.

The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (16)

1. A drawer assembly (10), the drawer assembly (10) comprising a fixed portion (110) and an extractable portion (120) that is extractable mounted in the fixed portion (110), characterized in that the extractable portion (120) comprises:

a drawer front section (1210) provided with an observation window (12110);

a drawer rear section (1220) movably disposed between the fixed portion (110) and the drawer front section (1210); and

an indicating structure (1230) comprising an indicating head (12311) at least partially exposed in the viewing window (12110), the indicating structure (1230) connecting the drawer front section (1210) and the drawer rear section (1220) converting movement of the drawer rear section (1220) between the fixed portion (110) and the drawer front section (1210) into a swinging movement of the indicating head (12311) in the viewing window (12110) to indicate the position of the drawer rear section (1220).

2. The drawer assembly (10) of claim 1, wherein the indicating structure (1230) further comprises:

the indicating plate (12310) is rotatably connected with the drawer front section (1210), and the indicating head (12311) is fixedly arranged at one end of the indicating plate (12310);

and a driving plate (12320) fixedly connected with the rear drawer section (1220) and in sliding fit with the other end of the indicating plate (12310), so that the driving plate (12320) drives the indicating plate (12310) to rotate relative to the front drawer section (1210) when moving between the fixed part (110) and the front drawer section (1210) along with the rear drawer section (1220).

3. The drawer assembly (10) of claim 2, wherein the drive plate (12320) is provided with a drive slot (12321), and the other end of the indicator plate (12310) is provided with a mating post (12312), and the mating post (12312) is confined in the drive slot (12321).

4. A drawer assembly (10) according to claim 3, wherein the drive slot (12321) comprises an inclined guide section (a) arranged obliquely to the direction of movement of the drawer rear section (1220) between the drawer front section (1210) and the fixed portion (110).

5. The drawer assembly (10) of claim 4, wherein the drive slot (12321) further includes a vertical guide section (b) provided at one or both ends of the inclined guide section (a), the vertical guide section (b) being disposed parallel to a moving direction of the drawer rear section (1220) between the drawer front section (1210) and the fixed portion (110).

6. A drawer assembly (10) according to claim 3, wherein the location (12313) at which the indicator plate (12310) is rotatably connected to the drawer front (1210) is between the indicator head (12311) and the mating post (12312).

7. The drawer assembly (10) of claim 2 wherein the drive plate (12320) has a drive post thereon, the indicator plate (12310) having a mating slot therein, the drive post being retained in the mating slot.

8. The drawer assembly (10) of claim 7, wherein the mating slot includes an angled guide section disposed oblique to a direction of movement of the drawer rear section (1220) between the drawer front section (1210) and the stationary portion (110).

9. The drawer assembly (10) of claim 8, wherein the mating slot further includes a vertical guide section provided at one or both ends of the angled guide section, the vertical guide section being disposed parallel to a direction of movement of the drawer rear section (1220) between the drawer front section (1210) and the stationary portion (110).

10. The drawer assembly (10) of claim 4, wherein the angled guide section (a) is a straight or curved section.

11. The drawer assembly (10) of claim 8, wherein the angled guide section is a straight or curved section.

12. The drawer assembly (10) of any of claims 1-9, wherein the indicator head (12311) is an arcuate plate-like structure that partially protrudes into the viewing window (12110).

13. The drawer assembly (10) of claim 12, wherein the viewing window (12110) includes:

a viewing hole (12111) provided on a surface of the drawer front section (1210);

a transparent cover (12112) for closing the viewing aperture (12111);

wherein the transparent cover (12112) includes an arcuate refractive surface.

14. The drawer assembly of claim 13, wherein the arcuate refractive surface comprises an arcuate refractive top surface (12112 a) and an arcuate refractive bottom surface (12112 b).

15. The drawer assembly (10) of claim 1, wherein the stationary portion (110) is provided with a primary static insert (21 a) and a secondary static insert (22 a), and the drawer rear section (1220) is provided with a primary movable insert (21 b) and a secondary movable insert (22 b);

the indicating head (12311) is provided with an isolation position mark (12311 a), a test position mark (12311 b) and a working position mark (12311 c);

when the drawer rear section (1220) moves to a position where the primary movable insert (21 b) is inserted with the primary static insert (21 a) and the secondary movable insert (22 b) is inserted with the secondary static insert (22 a), the indicating head (12311) swings to a position where the working position mark (12311 c) is exposed out of the observation window (12110);

when the drawer rear section (1220) moves to a position where the primary movable insert (21 b) is separated from the primary static insert (21 a) and the secondary movable insert (22 b) is inserted into the secondary static insert (22 a), the indicating head (12311) swings to a position where the test position mark (12311 b) is exposed out of the observation window (12110);

when the drawer rear section (1220) moves to a position where the primary movable insert (21 b) is separated from the primary static insert (21 a) and the secondary movable insert (22 b) is separated from the secondary static insert (22 a), the indicating head (12311) swings to a position where the isolation position mark (12311 a) exposes the observation window (12110).

16. A low-voltage drawer cabinet (1), characterized by comprising:

the drawer assembly (10) according to any one of claims 1-15.