CN216818220U - Manual power-off structure of contactor - Google Patents

Abstract

The utility model provides a manual power-off structure of a contactor, which comprises: one end of the elastic sheet is connected with the pin of the coil, and the other end of the elastic sheet is provided with an elastic connecting part; the ejector rod moves along the Y-axis direction of the shell and is provided with an ejector rod main body which is abutted against the elastic sheet and a second matching block arranged at the top of the ejector rod main body; the button moves along the X-axis direction of the shell and is provided with a third gear suitable for power failure of a control circuit where the driving coil is located, the button is provided with a second driving block which is arranged corresponding to the second matching block, the second driving block is provided with a second inclined surface which is abutted against the second matching block, and the second inclined surface is suitable for converting the movement of the button along the X-axis direction into the movement of the ejector rod along the Y-axis direction. When needs make the contactor not move, the second inclined plane of button and the second cooperation piece of ejector pin offset to the drive ejector pin moves down along casing Y axial, makes elastic connection portion and binding post separation, and then makes the coil be in the outage state, compares with prior art, and it is more convenient to use like this.

Description

Manual power-off structure of contactor

Technical Field

The utility model relates to the technical field of low-voltage electrical appliances, in particular to a manual power-off structure of a contactor.

Background

Contactor wide application is in fields such as fire pump, illumination, ventilation, public hot water, mechanical ventilation system to the fire pump exemplifies, when the conflagration breaing out, the return circuit that the controller that is used for controlling fire pump contactor can control the coil place switches on, and the electric current that flows through the coil produces magnetic field and makes quiet iron core attract and move the iron core, moves the iron core and drives the contact and support the action, thereby makes contactor main contact closed, and the main loop of fire pump just can switch on like this for the fire pump normally works. Considering that when the load reduction or the fire pump breaks down and needs to be overhauled, in order to make the contactor not act, the power of a loop where the coil is located needs to be cut off, the common method is to separate an external lead connected with the coil from the contactor, but the external lead needs to be reconnected after the maintenance is finished, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the defect of inconvenience in overhauling, maintaining and using in the prior art, and provide a manual power-off structure of a contactor, which is convenient to use.

Therefore, the utility model provides a manual power-off structure of a contactor, which comprises an elastic sheet, an ejector rod and a button piece, wherein one end of the elastic sheet is connected with a pin of a coil, and the other end of the elastic sheet is provided with an elastic connecting part which is propped against the ejector rod and can be in contact communication with or separated from a wiring terminal; the ejector rod moves along the Y-axis direction of the shell and is provided with an ejector rod main body which is abutted against the elastic sheet and a second matching block arranged at the top of the ejector rod main body; the button moves along the X-axis direction of the shell and is provided with a third gear suitable for driving a control circuit where the coil is located to be powered off, the button is provided with a second driving block correspondingly arranged with the second matching block, the second driving block is provided with a second inclined surface abutted against the second matching block, and the second inclined surface is suitable for converting the movement of the button along the X-axis direction into the movement of the ejector rod along the Y-axis direction.

The second driving block is provided with a blocking surface which is positioned at the rear end of the second inclined surface and is horizontally arranged, and when the button is in the third gear, the blocking surface is abutted against the top surface of the second matching block.

The coil is installed on the coil skeleton, the coil skeleton has the connecting block that extends outwards, the shaping has the confession on the connecting block the perforation that the ejector pin main part wore to establish.

The second mating block has a size greater than the size of the perforation.

The ejector rod main body is provided with a boss, the boss is located on one side, away from the second matching block, of the connecting block, and the boss can abut against the connecting block.

The front end of the boss along the insertion direction is provided with a guide inclined plane.

The contact surface of the second matching block and the second inclined surface is an arc surface.

And a locking structure which is suitable for locking the button piece in the third gear.

The locking structure comprises a buckle groove and a lock catch piece, and the buckle groove is formed on the top surface of the shell; the locking fastener is rotatably arranged on the button and is provided with a locking position matched and locked with the buckling groove and an unlocking position separated from the buckling groove.

The button further comprises a fool-proof structure which is suitable for limiting the locking fastener to only rotate towards one side of the buckle groove, wherein the fool-proof structure comprises a fourth limiting block arranged on the button and a convex block arranged on the locking fastener and capable of abutting against the fourth limiting block.

The technical scheme of the utility model has the following advantages:

1. the utility model provides a manual power-off structure of a contactor, which comprises an elastic sheet, an ejector rod and a button piece, wherein when the contactor needs to be disabled, the button piece moves along the X-axis direction of a shell, and a second inclined surface of the button piece is abutted against a second matching block of the ejector rod, so that the ejector rod is driven to move downwards along the Y-axis direction of the shell, an elastic connecting part of the elastic sheet is separated from a wiring terminal, a coil is further in a power-off state, and the contactor cannot be enabled to be more convenient to use compared with the prior art.

2. According to the manual power-on and power-off structure of the contactor, the size of the second matching block is larger than that of the through hole, the boss is arranged on the ejector rod main body and located on one side, away from the second matching block, of the connecting block and can abut against the connecting block, and the second matching block is matched with the boss, so that the ejector rod cannot fall off from the coil framework, and reliability is improved.

3. The utility model provides a manual power-off structure of a contactor, which comprises a buckle groove and a locking piece, wherein the locking piece is rotatably arranged on a button piece and is provided with a locking position matched with the buckle groove for locking and an unlocking position separated from the buckle groove. The operating personnel can realize locking and unblock through directly rotating the hasp piece, can prevent operating personnel malfunction, has improved the security performance, and it is more convenient to use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a perspective view of a hand-operated household contactor of the present invention (button in second gear);

FIG. 2 is a first cross-sectional view of FIG. 1;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is a schematic view of the structure of FIG. 1 with the housing removed;

FIG. 5 is a schematic view of the assembly of the button member and the locking member;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a side view of FIG. 5;

fig. 8 is an exploded view of the button and locking member;

FIG. 9 is a schematic view of the assembly of the bobbin, contact support and carrier rod;

FIG. 10 is a perspective view of the contact support;

FIG. 11 is a top view of the hand-operated household contactor (knob in first gear position);

FIG. 12 is a cross-sectional view of portion C1-C1 of FIG. 11;

FIG. 13 is an enlarged view of portion B of FIG. 12;

FIG. 14 is a perspective view of the housing;

FIG. 15 is a perspective view of FIG. 11 with the housing removed;

FIG. 16 is an enlarged view of the portion C of FIG. 15;

fig. 17 is a cross-sectional view of the hand-operated home contactor (knob in first gear position).

Description of the reference numerals: 1. a coil; 2. a stationary core; 3. a contact support; 4. a movable iron core; 5. a housing; 6. a button piece; 7. a connecting rod; 8. a first driving block; 9. a first inclined plane; 10. a first mating block; 11. a trench; 12. an elastic member; 13. a first stopper; 14. a coil bobbin; 15. a second limiting block; 16. a third limiting block; 17. buckling grooves; 18. a fastener; 19. a strip hole; 20. a coupling portion; 21. a button pushing part; 22. a fourth limiting block; 23. a bump; 24. a connecting shaft; 25. a resilient arm; 26. an open slot; 27. mounting a plate; 28. a latch main body portion; 29. an operation unit; 30. a notch; 31. a step; 32. a spring plate; 33. a top rod; 34. a wiring terminal; 35. an elastic connection portion; 36. a main body of the ejector rod; 37. a second mating block; 38. a second driving block; 39. a second inclined plane; 40. a blocking surface; 41. connecting blocks; 42. perforating; 43. a boss; 44. a side plate; 45. a stopper; 46. a fifth limiting block; 47. a limiting groove; 48. and a positioning projection.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Examples

The embodiment provides a hand-operated household contactor which comprises a shell 5, an electromagnetic mechanism, a contact support 3, a gear locking structure and a hand-operated power-off structure.

The housing 5, as shown in fig. 14, has a long hole 19 formed at the top thereof, and two fastening grooves 17 formed at one side of the long hole 19, two side walls of the long hole 19 in the width direction have notches 30 for allowing the push button portion 21 of the button member 6 to protrude from the inside of the housing 5, and steps 31 capable of abutting against the push button portion 21, and a side plate 44 of the housing 5 has a stopper 45 formed on the inner side surface thereof. The shell 5 is provided with a first limiting block 13, and the first limiting block 13 is located on one side of the connecting rod 7 far away from the first driving block 8 and is abutted to the connecting rod 7. When the button 6 is assembled, the button pushing part 21 is firstly loaded from the notch 30 and then moves transversely towards the step 31, as shown in fig. 12-13, the step 31 can limit the button pushing part 21, so that the button 6 is not easy to drop from the shell 5, and the assembly is more rapid and convenient.

The electromagnetic mechanism, as shown in fig. 2-4, includes a bobbin 14, a coil 1, a stationary core 2, and a movable core 4 linked with a contact support 3, wherein the coil 1 has a power-on state and a power-off state under normal conditions (i.e. without affecting the normal operation of the contactor), and a power-off state under the condition of a fault of a controller or a control line. As shown in fig. 9, the bobbin 14 has a second stopper 15 extending toward one side and capable of abutting against the back surface of the connecting rod 7, and a connecting block 41 extending toward the other side, and a through hole 42 for the ejector rod main body 36 to pass through is formed in the connecting block 41.

A contact support 3 moving in the Y-axis direction of the housing 5, as shown in fig. 10, having a link 7 extending vertically and directly driven by a button 6, the contact support 3 having an open state and a closed state in a power-off state of the coil 1. When the coil 1 is in the power-off closing state, the contact support 3 has a gap between the movable iron core 4 and the static iron core 2; the contact support 3 further has an over travel state when the coil 1 is restored from the power-off state to the power-on state, and in the over travel state, the contact support 3 is driven by the movable iron core 4 to move towards the direction close to the stationary iron core 2 and drive the first fitting block 10 of the connecting rod 7 to be separated from the groove 11 of the button 6.

The button 6, which is moved along the X-axis direction of the housing 5 by the elastic member 12, as shown in fig. 5, has a coupling portion 20 located inside the housing 5, and a push button portion 21 provided on the coupling portion 20 and capable of extending out of the housing 5 from the elongated hole 19, as shown in fig. 8, the push button portion 21 includes two oppositely disposed mounting plates 27, and the diagonal positions of the coupling portion 20 are respectively provided with a first driving block 8 and a second driving block 38. A reversing structure is arranged between the button 6 and the contact support 3, the reversing structure is suitable for converting the movement of the button 6 in the X-axis direction into the movement of the contact support 3 in the Y-axis direction, the button 6 is provided with a first driving block 8 suitable for driving the connecting rod 7 to move, as shown in fig. 3-5, the reversing structure comprises a first inclined surface 9 arranged on one side of the first driving block 8 and the connecting rod 7, and a first matching block 10 arranged on the other side, capable of abutting against the first inclined surface 9 and sliding along the surface, and the first driving block 8 is provided with a third limiting block 16 which is adjacent to the first inclined surface 9 and capable of abutting against the front surface of the connecting rod 7. The button piece 6 is provided with a first gear corresponding to the switching-off state, a second gear corresponding to the switching-on state and a third gear for driving a control circuit where the coil 1 is located to be powered off in the power-off state of the coil 1. In this embodiment, the first gear is located in the middle of the housing, and the second gear and the third gear are respectively disposed on two sides of the first gear. The positioning structure comprises a first matching block 10 and a groove 11 which is arranged at the rear end of the first inclined surface 9 along the sliding direction of the first matching block 10 and is in matched connection with the first matching block 10. And one end of the elastic part 12 is abutted against the button 6, the other end of the elastic part is abutted against the shell 5, and the elastic part 12 is suitable for applying elastic acting force towards the button 6 to enable the button to reset from the second gear to the first gear. In this embodiment, the elastic member 12 is a compression spring, the button 6 is formed with a mounting groove for inserting the compression spring, and is arranged on the bottom surface of the mounting groove for positioning the positioning protrusion 48 on which the compression spring is arranged, and the compression spring is easier to assemble compared with the torsion spring, thereby improving the assembly efficiency.

In an alternative embodiment, the reversing mechanism includes a curved surface (not shown) provided on one of the first drive block 8 and the link 7, and a first engagement block 10 provided on the other and slidable along the curved surface while being in contact with the curved surface.

The gear locking structure comprises a locking piece 18, wherein the locking piece 18 is rotatably arranged on the push button part 21 and is provided with a locking position which is matched with the buckling groove 17 for locking when a gear is set and an unlocking position which is separated from the buckling groove 17.

The locking member 18 is detachably connected to the push button portion 21 by a hinge structure, as shown in fig. 7 and 8, the hinge structure includes: a connecting shaft 24 arranged on the push button part 21; two elastic arms 25 are arranged on the lock catch piece 18, two elastic arms 25 oppositely form an open slot 26 matched with the connecting shaft 24, the caliber of the opening of the open slot 26 is smaller than the diameter of the connecting shaft 24, and the front end of the elastic arm 25 in the inserting direction of the connecting shaft 24 is provided with a guide inclined plane for inserting the elastic arm. The locking member 18 includes a locking body 28 extending between the two mounting plates 27, and an operating portion 29 extending from the locking body 28 to the top surfaces of the mounting plates 27. A fool-proof structure is arranged between the locking element 18 and the push button portion 21 and is suitable for limiting the locking element 18 to rotate only towards one side of the buckle slot 17, and the fool-proof structure comprises a fourth limiting block 22 arranged on the push button portion 21 and a convex block 23 arranged on the locking element 18 and capable of abutting against the fourth limiting block 22.

The hand-operated power-off structure, as shown in fig. 15 and 16, includes a resilient piece 32, a plunger 33, and a second driving block 38.

One end of the elastic sheet 32 is connected with the pin of the coil 1, and the other end is provided with an elastic connecting part 35 which is pressed against the ejector rod 33 and can be in contact connection with or separated from the wiring terminal 34.

The lift pin 33 moves in the Y-axis direction of the housing 5, and as shown in fig. 16, includes a lift pin body 36 abutting against the spring piece 32, and a second engagement block 37 provided on the top of the lift pin body, and the size of the second engagement block 37 is larger than that of the through hole 42. The ejector rod main body 36 is provided with a boss 43, the boss 43 is positioned on one side of the connecting block 41 far away from the second matching block 37 and can abut against the connecting block 41, the front end of the boss 43 in the insertion direction is provided with a guide inclined plane, and the contact surface of the second matching block 37 and the second inclined plane 39 is an arc surface.

And the second driving block 38 is provided with a second inclined surface 39 which is abutted against the second matching block 37, and the second inclined surface 39 is suitable for converting the movement of the button 6 along the X-axis direction of the shell 5 into the movement of the push rod 33 along the Y-axis direction of the shell 5. The second driving block 38 has a blocking surface 40 located at the rear end of the second inclined surface 39 and horizontally arranged, and when the button 6 is in the third gear, the blocking surface 40 abuts against the top surface of the second engaging block 37.

The gear resetting structure, as shown in fig. 6 and 17, includes a stopper 45 formed on an inner side surface of a side plate 44 of the housing 5, and a fifth stopper 46 and a stopper groove 47 formed on a side wall of the button 6 and capable of cooperating with the stopper 45, wherein, in the first gear, the fifth stopper 46 abuts against the stopper 45; in the third gear, the stopper 45 is located in the limit groove 47. In this embodiment, the contact surface between the stopper 45 and the button 6 is an arc surface, the limiting groove 47 is a V-shaped groove, and the fifth limiting block 46 is formed with a matching inclined surface that can contact with the stopper 45.

The working principle of the hand-operated household contactor in the embodiment is as follows:

1) the button 6 is located in the first gear (Auto gear) as shown in fig. 11: at the moment, the manual household contactor is in an automatic operation mode, the manual household contactor is the same as a common modular contactor, the contactor drives the contact support 3 to act through the power on and power off of the coil 1, and therefore the moving contact is driven to be in contact connection with or separated from the static contact, and the normal action on-off is realized.

2) When a controller or a control circuit fails and a loop where the coil 1 is located cannot be conducted, the coil is in a power-off state, at the moment, the button 6 is driven manually to move from a first gear to a second gear (I gear) shown in fig. 1, a first inclined surface 9 of the button 6 abuts against a first matching block 10 of the contact support 3 connecting rod 7, so that the connecting rod 7 is driven to move upwards, when the button is moved to the second gear (I gear), the first matching block 10 is matched and locked with the groove 11, the movable contact is in contact communication with the fixed contact, a main loop where the fire pump is located is conducted, and the fire pump can work normally. When the second gear (I gear), the elastic element 12 stores energy, the movable iron core 4 keeps a certain distance from the static iron core 2, a small contact pressure is kept between the movable contact and the static contact, and the contactor is in a temporary connection state;

when a loop where the coil 1 is located is conducted after a fault of a controller or a control circuit is eliminated, the coil 1 is in an electrified state, current flowing through the coil 1 generates a magnetic field to enable the static iron core 2 to attract the movable iron core 4, the movable iron core 4 continuously moves upwards to drive the first matching block 10 of the contact support 3 to be separated from the groove 11, at the moment, the button piece 6 is reset to a first gear (Auto gear) under the elastic acting force of the elastic piece 12, and large contact pressure is kept between the movable contact and the static contact;

when the button 6 is in the second shift position (I-position), the locking member 18 is rotated to the locking position to be locked with the locking groove 17 of the housing 5, and the main circuit is in a permanent connection state.

3) When the contactor needs to be disabled, the button 6 is manually driven to move from the first gear to the third gear (O gear), the second inclined surface of the button 6 abuts against the second matching block 37 of the push rod 33, so that the push rod 33 is driven to move downwards along the Y axis of the shell 5, the elastic connecting portion 35 of the elastic sheet 32 is separated from the connecting terminal 34, and the coil 1 is in a temporary power-off state.

When the button 6 is in the third gear (O gear), the locking member 18 is rotated to the locking position to be locked with the catching groove 17 of the housing 5, and the main circuit is in a permanent off state.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims (10)

1. A manual power-off structure of a contactor is characterized by comprising:

one end of the elastic sheet (32) is connected with the pin of the coil (1), and the other end of the elastic sheet is provided with an elastic connecting part (35) which is abutted against the ejector rod (33) and can be in contact communication with or separated from the wiring terminal (34);

the ejector rod (33) moves along the Y-axis direction of the shell (5), and is provided with an ejector rod main body (36) which is abutted against the elastic sheet (32) and a second matching block (37) which is arranged at the top of the ejector rod main body;

button (6), along casing (5) X axle direction removal, it has and is suitable for the drive the third gear of coil (1) place control scheme outage, button (6) be equipped with second cooperation piece (37) correspond second drive block (38) that sets up, second drive block (38) be equipped with second inclined plane (39) that second cooperation piece (37) offset, second inclined plane (39) are suitable for with button (6) are converted into along the removal of X axle direction ejector pin (33) along the removal of Y axle direction.

2. The hand-operated power-off structure of a contactor according to claim 1, wherein the second driving block (38) is provided with a horizontally arranged blocking surface (40) at the rear end of the second inclined surface (39), and when the button member (6) is in the third gear position, the blocking surface (40) is abutted against the top surface of the second matching block (37).

3. The manual power-on and power-off structure of the contactor according to claim 1 or 2, wherein the coil (1) is mounted on a coil frame (14), the coil frame (14) is provided with a connecting block (41) extending outwards, and a through hole (42) for the ejector rod main body (36) to penetrate through is formed in the connecting block (41).

4. The hand-operated power-off structure of a contactor according to claim 3, characterized in that the size of the second fitting block (37) is larger than the size of the through hole (42).

5. The manual power-on and power-off structure of the contactor according to claim 3, wherein a boss (43) is arranged on the ejector rod main body (36), and the boss (43) is located on one side, away from the second matching block (37), of the connecting block (41) and can abut against the connecting block (41).

6. The hand-operated power-off structure of a contactor according to claim 5, wherein the boss (43) is provided with a guide slope along a front end in an insertion direction thereof.

7. The hand-operated power-off structure of a contactor according to claim 1, wherein a contact surface of the second engaging piece (37) and the second inclined surface (39) is an arc surface.

8. The hand-operated power-off structure of a contactor according to claim 1, further comprising a locking structure adapted to lock said knob (6) in said third gear position.

9. The hand-operated power-off structure of a contactor according to claim 8, wherein said locking structure comprises:

the buckle groove (17) is formed on the top surface of the shell (5);

and the locking piece (18) is rotatably arranged on the button piece (6) and has a locking position matched and locked with the buckling groove (17) and an unlocking position separated from the buckling groove (17).

10. The manual power-off structure of a contactor as claimed in claim 9, further comprising a fool-proof structure adapted to limit the rotation of said locking member (18) only toward one side of said slot (17), said fool-proof structure comprising a fourth stopper (22) disposed on said button member (6), and a protrusion (23) disposed on said locking member (18) and capable of abutting against said fourth stopper (22).

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