Low-voltage draw-out type switch cabinet

Abstract

The utility model discloses a low-voltage draw-out type switch cabinet which comprises a cabinet body and a drawer installed on the front face in the cabinet body through a sliding rail, an electrical switch is installed in the drawer through a support, a mechanical handle is installed at the position, corresponding to the electrical switch, of the front face of the drawer, and a transmission rod is installed between the mechanical handle and the electrical switch. The transmission rod is sleeved with a shifting piece, a hinge groove is formed in the shifting piece, the shifting piece is movably hinged to a limiting bolt through the hinge groove, a sawtooth groove is formed in the back face of the limiting bolt, and the surface of the limiting bolt is movably sleeved with a limiting sleeve fixedly connected to the bottom of the inner wall of the drawer. When the mechanical handle is screwed anticlockwise to cut off the electrical switch and open the drawer, the bayonet lock of the movable buckle on the back of the limiting bolt can be clamped into the sawtooth groove to prevent the limiting bolt from moving downwards, so that the mechanical handle is prevented from rotating clockwise, and the mechanical handle can be screwed clockwise to switch on the electrical switch only after the mechanical button is pressed. The effects of realizing the self-locking function and preventing misoperation are achieved, and the safety guarantee is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage switchgear technical field, concretely is a low voltage draw -out type switchgear. BACKGROUND

[0002] Low voltage draw -out type switchgear is by fixed cabinet and install main switch and so on control electric appliance element's draw -out drawer part composition, the mechanical handle of drawer and inside main electrical switch linkage, when drawing out the drawer, must screw the mechanical handle of drawer, linkage effect is cut off at this time electrical switch, on the basis of traditional switch cabinet, has the effect of improving security to a certain extent.

[0003] However, the existing low voltage draw -out type switchgear when screwing the mechanical handle and cutting off the electrical switch, the mechanical handle does not have locking mechanism, although it is stipulated that the mechanical handle is prohibited to touch after drawing out the drawer, but once the misoperation reverse screw handle occurs, the internal electrical switch will be connected, at this time the drawer is not closed, if the maintenance is being carried out, the risk will inevitably occur, and improvement is urgently needed. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the prior art, the utility model provides a low voltage draw -out type switchgear, which solves the problem that the existing low voltage draw -out type switchgear does not have a locking mechanism for the mechanical handle after drawing out the drawer, resulting in safety hazards due to misoperation.

[0005] To solve the above technical problems, the utility model provides the following technical scheme:

[0006] A low voltage draw -out type switchgear, comprising a cabinet and a drawer installed on the front of the cabinet through a slide rail, an electrical switch is installed in the drawer through a support, a mechanical handle is installed on the front of the drawer corresponding to the position of the electrical switch, a transmission rod is installed between the mechanical handle and the electrical switch, a tab is sleeved on the transmission rod, a hinge groove is arranged on the tab, a limit pin is movably hinged in the hinge groove, a sawtooth groove is arranged on the back of the limit pin, a limit sleeve fixedly connected to the bottom of the inner wall of the drawer is movably sleeved on the surface of the limit pin, and the lower end of the limit pin penetrates the drawer and is movably inserted into a limit slot on the switch cabinet partition plate below the drawer.

[0007] A mechanical button is movably embedded on the panel on the front of the drawer, an extrusion rod is fixedly connected to the back of the mechanical button, a movable buckle sleeved outside the limit sleeve is fixedly connected to the back of the extrusion rod, a retaining pin penetrating the limit sleeve and movably connected in the sawtooth groove is arranged on the back of the inner wall of the movable buckle, and a supporting spring is arranged on the back of the movable buckle.

[0008] Preferably, handles are further arranged on both sides of the front of the drawer.

[0009] Preferably, the hinge slot is horizontally arranged, and the limit pin is movably connected with the push piece through a pin shaft movably inserted into the hinge slot.

[0010] Preferably, the mechanical button is located at the lower right of the mechanical handle.

[0011] Preferably, the inner wall of the sawtooth slot is a slope inclined backward from the lower end to the upper end, and the front surface of the clamping pin is a wedge-shaped structure matched with the sawtooth slot.

[0012] Preferably, the surface of the extrusion rod is provided with a guide frame fixedly connected to the bottom of the inner wall of the drawer.

[0013] Preferably, the support spring is installed on the back surface of the movable buckle through a fixed seat fixedly connected to the bottom of the inner wall of the drawer.

[0014] Compared with the prior art, the drawer has the following beneficial effects:

[0015] During the closing of the drawer, the limit pin is inserted into the limit slot on the lower switch cabinet partition plate for locking, so that the drawer cannot be directly opened without cutting off the electrical switch. When the mechanical handle is counterclockwise twisted to cut off the electrical switch and open the drawer, the limit pin moves upward, and at this time, the clamping pin of the movable buckle on the back surface is clamped into the sawtooth slot to prevent the limit pin from moving downward, thereby preventing the mechanical handle from being clockwise rotated. Only after the mechanical button is pressed, the mechanical handle can be clockwise twisted to connect the electrical switch, so that the self-locking function and the effect of preventing misoperation are realized, the safety guarantee is improved, and the problem that the existing low-voltage pull-out type switch cabinet has a misoperation safety hazard due to the fact that the mechanical handle does not have a locking mechanism after the drawer is pulled out. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a front view of the utility model;

[0017] Figure 2 is a plan view of the drawer of the utility model;

[0018] Figure 3 is a plan view of the corresponding position of the limit pin of the utility model;

[0019] Figure 4 is a side sectional view of the corresponding position of the limit pin of the drawer of the utility model;

[0020] Figure 5 is a side sectional view of the corresponding position of the limit pin of the utility model;

[0021] Figure 6 is a front sectional view of the corresponding position of the limit pin of the utility model.

[0022] In the diagram: 1. Cabinet; 101. Switch cabinet partition; 102. Limiting slot; 2. Slide rail; 3. Drawer; 4. Bracket; 5. Electrical switch; 6. Mechanical handle; 7. Transmission rod; 8. Paddle; 801. Hinge groove; 9. Limiting pin; 901. Serrated groove; 902. Pin; 10. Limiting sleeve; 11. Mechanical button; 12. Pressing rod; 13. Movable buckle; 1301. Locking pin; 14. Support spring; 15. Handle; 16. Guide frame; 17. Fixed base. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1-6 As shown, this utility model provides a technical solution: a low-voltage withdrawable switch cabinet, including a cabinet body 1 and a drawer 3 installed on the front of the cabinet body 1 via a slide rail 2. Handles 15 are also provided on both sides of the front of the drawer 3. An electrical switch 5 is installed in the drawer 3 via a bracket 4. A mechanical handle 6 is installed on the front of the drawer 3 corresponding to the position of the electrical switch 5. A transmission rod 7 is installed between the mechanical handle 6 and the electrical switch 5.

[0025] A lever 8 is sleeved on the transmission rod 7. The lever 8 is provided with a hinge groove 801. The lever 8 is movably hinged to a limit pin 9 through the hinge groove 801. The hinge groove 801 is horizontally set. The limit pin 9 is movably hinged to the lever 8 through a pin 902 that is movably inserted into the hinge groove 801. A serrated groove 901 is provided on the back of the limit pin 9. A limit sleeve 10 that is fixedly connected to the bottom of the inner wall of the drawer 3 is movably sleeved on the surface of the limit pin 9. The lower end of the limit pin 9 passes through the drawer 3 and is movably inserted into the limit slot 102 on the switch cabinet partition 101 below the drawer 3.

[0026] A mechanical button 11 is movably embedded on the front panel of drawer 3. The mechanical button 11 is located to the lower right of the mechanical handle 6. A pressing rod 12 is fixedly connected to the back of the mechanical button 11. A guide bracket 16 is fixedly connected to the bottom of the inner wall of drawer 3 on the surface of the pressing rod 12. A movable buckle 13 is fixedly connected to the back of the pressing rod 12 and sleeved on the outside of the limiting sleeve 10. A support spring 14 is provided on the back of the movable buckle 13. The support spring 14 is installed on the back of the movable buckle 13 through a fixing seat 17 fixedly connected to the bottom of the inner wall of drawer 3.

[0027] The back of the inner wall of the movable buckle 13 is provided with a pin 1301 penetrating through the limiting sleeve 10 and movably clamped in the sawtooth groove 901, the inner wall of the sawtooth groove 901 is a slope with the lower end being inclined backward than the upper end, and the front of the pin 1301 is a wedge-shaped structure matched with the sawtooth groove 901.

[0028] Working principle:

[0029] Screw the mechanical handle 6 counterclockwise, drive the electrical switch 5 counterclockwise through the transmission rod 7, cut off the electrical switch 5, drive the limiting bolt 9 upward through the push piece 8, and separate from the limiting slot 102 on the switch cabinet partition plate 101, at this time, the drawer 3 can be pulled out through the pull handle 15, and because the pin 1301 of the movable buckle 13 is automatically clamped into the sawtooth groove 901 of the limiting bolt 9 under the action of the supporting spring 14, the limiting bolt 9 is prevented from moving downward, the clockwise rotation of the mechanical handle 6 is prevented, the automatic locking effect is achieved, and the electrical switch 5 is prevented from being mistakenly operated to be turned on;

[0030] After closing the drawer 3, press the mechanical button 11, push the movable buckle 13 backward through the extrusion rod 12, so that the pin 1301 is separated from the sawtooth groove 901, and at the same time, screw the mechanical handle 6 clockwise, drive the electrical switch 5 clockwise through the transmission rod 7, drive the limiting bolt 9 to move downward and insert into the limiting slot 102, lock the drawer 3 and complete the power-on.

[0031] It should be noted that in this text, terms such as "including", "containing" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A low voltage draw-out switchgear cabinet comprising a cabinet body (1) and a drawer (3) mounted in the front of the cabinet body (1) by means of slide rails (2), an electrical switch (5) being mounted in the drawer (3) by means of a support (4), characterized in that: The mechanical handle (6) is installed at the position corresponding to the electrical switch (5) on the front of the drawer (3), a transmission rod (7) is installed between the mechanical handle (6) and the electrical switch (5), a push piece (8) is sleeved on the transmission rod (7), a hinged groove (801) is arranged on the push piece (8), the push piece (8) is movably hinged to a limiting pin (9) through the hinged groove (801), a sawtooth groove (901) is arranged on the back of the limiting pin (9), a limiting sleeve (10) fixedly connected to the bottom of the inner wall of the drawer (3) is movably sleeved on the surface of the limiting pin (9), and the lower end of the limiting pin (9) penetrates the drawer (3) and is movably inserted into a limiting slot (102) on the switch cabinet partition plate (101) below the drawer (3). A mechanical button (11) is movably embedded on the panel on the front of the drawer (3), an extrusion rod (12) is fixedly connected to the back of the mechanical button (11), a movable buckle (13) sleeved outside the limiting sleeve (10) is fixedly connected to the back of the extrusion rod (12), a clamping pin (1301) penetrating the limiting sleeve (10) and movably clamped in the sawtooth groove (901) is arranged on the back of the inner wall of the movable buckle (13), and a supporting spring (14) is arranged on the back of the movable buckle (13).

2. A low voltage draw-out switchgear according to claim 1, characterized in that: Pull handles (15) are further arranged on the front of the drawer (3).

3. A low voltage draw-out switchgear according to claim 1, characterized in that: The hinged groove (801) is horizontally arranged, and the limiting pin (9) is movably hinged to the push piece (8) through a pin shaft (902) movably inserted into the hinged groove (801).

4. A low voltage draw-out switchgear according to claim 1, characterized in that: The mechanical button (11) is located below and to the right of the mechanical handle (6).

5. A low voltage draw-out switchgear according to claim 1, characterized in that: The inner wall of the sawtooth groove (901) is a slope with the lower end inclined backward than the upper end, and the front of the clamping pin (1301) is a wedge-shaped structure matched with the sawtooth groove (901).

6. A low voltage draw-out switchgear according to claim 1, characterized in that: A guide frame (16) fixedly connected to the bottom of the inner wall of the drawer (3) is arranged on the surface of the extrusion rod (12).

7. A low voltage draw-out switchgear according to claim 1, characterized in that: The supporting spring (14) is installed on the back of the movable buckle (13) through a fixed seat (17) fixedly connected to the bottom of the inner wall of the drawer (3).

Images