A DC contactor capable of manual disconnection

Abstract

The utility model discloses a DC contactor that can be manually disconnected, and relates to the technical field of DC contactors, including a shell and a handle, a vertical guide rod is provided in a ring shape just above the shell, a locking mechanism is provided just above the vertical guide rod, the locking mechanism positions the handle according to the control requirements of the contactor to prevent the handle from being accidentally opened, a separation mechanism is provided inside the shell, the separation mechanism is pressed downward by the handle provided at the top, and then the contact end inside the DC contactor is separated. The addition of a manual power-off device effectively solves the problem of potential safety hazards in the case of a sudden power outage of the system, where the main contact is always in a closed state due to the mechanical locking effect, and if the system is suddenly powered on, the motor automatically works.

Description

Technical Field

[0001] The utility model relates to the technical field of DC contactors, in particular to a DC contactor which can be disconnected manually. Background Art

[0002] The conventional structure of DC contactors currently on the market is: including a shell, two static contacts, a moving contact piece and a driving mechanism, wherein an insulating shell is fixedly sleeved outside the shell, and a transverse partition is positioned and installed in the inner cavity of the shell, and the transverse partition divides the inner cavity of the shell into an upper chamber and a lower chamber.

[0003] When the existing AC contactor attracts the coil and is energized, the moving iron core is attracted and the main contact is closed. To maintain the working state, the coil must always be energized and attracted. The coil consumes a lot of electricity, causing great waste. The DC contactor cannot be separated manually, and the handle of the DC contactor cannot be locked, which can easily cause accidental touches during normal operation. Summary of the invention

[0004] The purpose of the utility model is to provide a DC contactor that can be manually disconnected to solve the above-mentioned defects caused by the prior art.

[0005] A DC contactor capable of manual disconnection comprises a shell and a handle, wherein a vertical guide rod is provided in an annular shape directly above the shell, and a locking mechanism is provided directly above the vertical guide rod. The locking mechanism positions the handle according to the control requirements of the contactor to prevent the handle from being accidentally opened, and a separation mechanism is provided inside the shell, and the separation mechanism is pressed downward by the handle provided at the top, thereby separating the contact end inside the DC contactor.

[0006] Preferably, the locking mechanism includes a vertical guide rod, a handle, a threaded through hole, an outer wrapping tube and a fastener. The outer side of the vertical guide rod is connected to the outer side of the outer wrapping tube. The top end of the handle is provided with a threaded through hole in an annular shape. The bottom end of the handle is provided with an outer wrapping tube. The inside of the threaded through hole is connected with a fastener.

[0007] Preferably, the handle is connected to the top end of the vertical guide rod via a fastener disposed therethrough.

[0008] Preferably, the separation mechanism includes a push rod, a static touch plate, a dynamic touch plate, an inner separating ring, an iron core rod and contacts, a handle is provided at the top end of the push rod, a dynamic touch plate is penetrated and connected to the bottom end of the push rod, contacts are provided on the outer sides of the dynamic touch plate and the static touch plate, the static touch plate is symmetrically arranged inside the shell, and the inner separating ring is arranged inside the shell.

[0009] Preferably, a coil is arranged inside the shell.

[0010] Preferably, the handle is connected to the moving touch plate via a push rod arranged at the bottom end.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. Adding a manual power-off device effectively solves the problem that when the system suddenly loses power, the main contacts are always in a closed state due to the mechanical locking effect. If the system suddenly powers on, the motor will work automatically, which may cause potential safety hazards. At the same time, manual operation can be performed when the electric control circuit fails or the battery voltage is low, thus completely solving the problem of manual rapid on and off of load contacts and non-self-locking.

[0013] 2. Turn the fastener to extend the locking rod and press against the bottom end of the outer wrapping tube. At this time, the outer wrapping tube cannot be pressed down to the separation position, preventing someone from accidentally touching the handle and causing the DC contactor to cause a safety accident, thereby improving the safety of maintenance personnel's maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the front section structure of the shell in the present utility model.

[0016] Figure 3 It is a schematic diagram of the separation of the static touch panel and the dynamic touch panel in the present invention.

[0017] Figure 4 It is a schematic diagram of the side view structure of the shell in the utility model.

[0018] in:

[0019] 1. Shell; 2. Vertical guide rod; 3. Locking mechanism; 4. Handle; 5. Threaded through hole; 6. Outer wrapping tube; 7. Fastener; 8. Coil; 9. Push rod; 10. Separation mechanism; 11. Static touch plate; 12. Moving touch plate; 13. Inner separation ring; 14. Core rod; 15. Contact. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figures 1 to 4As shown, a DC contactor that can be manually disconnected includes a shell 1 and a handle 4. A vertical guide rod 2 is arranged in a ring shape just above the shell 1. A locking mechanism 3 is arranged just above the vertical guide rod 2. The locking mechanism 3 positions the handle 4 according to the control requirements of the contactor to prevent the handle 4 from being accidentally opened. A separation mechanism 10 is arranged inside the shell 1. The separation mechanism 10 is pressed downward by the handle 4 arranged at the top, thereby separating the contact end inside the DC contactor.

[0022] In this embodiment, the locking mechanism 3 includes a vertical guide rod 2, a handle 4, a threaded through hole 5, an outer wrapping tube 6 and a fastener 7. The outer side of the vertical guide rod 2 is connected to the outer side of the wrapping tube 6. The top end of the handle 4 is provided with a threaded through hole 5 in an annular shape. The bottom end of the handle 4 is provided with an outer wrapping tube 6. The inside of the threaded through hole 5 is penetrated and connected with a fastener 7.

[0023] In this embodiment, the handle 4 is connected to the top of the vertical guide rod 2 via a fastener 7 that is arranged through the handle 4. The fastener 7 is used to vertically position the vertical guide rod 2, and the vertical guide rod 2 is used to vertically guide the outer wrapping tube 6.

[0024] In this embodiment, the separation mechanism 10 includes a push rod 9, a static touch plate 11, a dynamic touch plate 12, an inner separation ring 13, an iron core rod 14 and a contact 15. A handle 4 is provided at the top of the push rod 9, and the bottom end of the push rod 9 is connected with the dynamic touch plate 12. Contacts 15 are provided on the outer sides of the dynamic touch plate 12 and the static touch plate 11. The static touch plate 11 is symmetrically arranged inside the shell 1, and the inner separation ring 13 is arranged inside the shell 1.

[0025] In this embodiment, the coil 8 disposed inside the housing 1 provides magnetic force to the stationary touch plate 11 to adsorb the moving touch plate 12 .

[0026] In this embodiment, the handle 4 is connected to the moving touch plate 12 via a push rod 9 disposed at the bottom end. The push rod 9 pushes the moving touch plate 12 vertically to separate the moving touch plate 12 from the stationary touch plate 11 .

[0027] This kind of DC contactor that can be manually disconnected includes the following work contents in practical application:

[0028] Step 1: When the handle 4 does not need to be opened normally, the fastener 7 is inserted into the threaded through hole 5 opened at the top of the handle 4 and the vertical guide rod 2 in sequence, and the handle 4 and the outer wrapped tube 6 are vertically supported by the fastener 7 to avoid the handle 4 being vertically supported by the fastener 7 when the DC contactor does not need to be manually opened, so as to prevent an outsider from accidentally touching the handle 4, causing the handle 4 to drive the outer wrapped tube 6 to be vertically pressed down;

[0029] Step 2: When the coil 8 is energized, the coil 8 generates a magnetic force to attract the moving iron core rod 14, and the moving touch plate 12 assembly is driven upward by the iron core rod 14, so that the moving touch plate 12 contacts the stationary touch plates 11 arranged on the left and right sides, so that the contact point 15 arranged on the outside of the stationary touch plate 11 contacts the contact point 15 arranged on the outside of the moving touch plate 12, so that the main circuit is turned on;

[0030] Step 3: When a fault occurs and there is no time to disconnect the voltage of the coil 8, the operator can press the handle 4, so that the outer wrapping tube 6 set at the bottom end of the handle 4 descends on the outside of the vertical guide rod 2, and guides the descending direction of the handle 4. The handle 4 is connected to the push rod 9, so that the push rod 9 moves downward, and the push rod 9 contacts the iron core rod 14, pushing the iron core rod 14 to move downward, so that the contact 15 set on the outside of the static touch plate 11 is separated from the contact 15 set on the outside of the moving touch plate 12, thereby achieving the effect of disconnecting the main circuit.

[0031] Therefore, the embodiments disclosed above are only illustrative in all aspects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A DC contactor capable of manual disconnection, characterized in that: The invention comprises a shell (1) and a handle (4); a vertical guide rod (2) is arranged in an annular shape directly above the shell (1); a locking mechanism (3) is arranged directly above the vertical guide rod (2); the locking mechanism (3) positions the handle (4) according to the control requirements of the contactor to prevent the handle (4) from being accidentally opened; a separation mechanism (10) is arranged inside the shell (1); the separation mechanism (10) is pressed downward by the handle (4) arranged at the top, thereby separating the contact ends inside the DC contactor.

2. A DC contactor capable of manual disconnection according to claim 1, characterized in that: The locking mechanism (3) comprises a vertical guide rod (2), a handle (4), a threaded through hole (5), an outer wrapping tube (6) and a fastener (7); the outer side of the vertical guide rod (2) is connected to the outer wrapping tube (6); the top end of the handle (4) is provided with a threaded through hole (5) in the shape of a ring; the bottom end of the handle (4) is provided with an outer wrapping tube (6); and the inside of the threaded through hole (5) is penetrated and connected with the fastener (7).

3. A DC contactor capable of manual disconnection according to claim 2, characterized in that: The handle (4) is connected to the top end of the vertical guide rod (2) via a fastener (7) that penetrates through the handle.

4. A DC contactor capable of manual disconnection according to claim 1, characterized in that: The separation mechanism (10) comprises a push rod (9), a stationary touch plate (11), a moving touch plate (12), an inner separation ring (13), an iron core rod (14) and a contact (15); a handle (4) is arranged at the top end of the push rod (9); the moving touch plate (12) is connected through the bottom end of the push rod (9); the outer sides of the moving touch plate (12) and the stationary touch plate (11) are both provided with contacts (15); the stationary touch plate (11) is symmetrically arranged inside the housing (1); and the inner separation ring (13) is arranged inside the housing (1).

5. A DC contactor capable of manual disconnection according to claim 1, characterized in that: A coil (8) is arranged inside the housing (1).

6. A DC contactor capable of manual disconnection according to claim 4, characterized in that: The handle (4) is connected to the moving touch plate (12) via a push rod (9) arranged at the bottom end.

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