Relay with manual operation function

Abstract

The utility model discloses a relay with a manual operation function, which comprises a shell part, a magnetic circuit part, a moving contact part and a static contact part, and is characterized in that the magnetic circuit part comprises a coil and a movable piece; the switch further comprises an operating piece, an interlocking piece and a normally-closed switch piece, the shell part is provided with a mounting hole, the operating piece is movably mounted in the mounting hole, and the operating piece can be operated to push the movable piece to move, so that the moving contact part and the static contact part are closed; the switch part is arranged in the shell part and is electrically connected with the coil; the interlocking piece is movably arranged in the shell part and can be operated to reciprocate between a locking position and a triggering position, when the interlocking piece moves to the locking position, the operating piece is locked, and when the interlocking piece moves to the triggering position, the switching piece is triggered, so that the switching piece is switched off. According to the utility model, two working modes of electromagnetic driving and manual driving are provided, which is convenient for workers to carry out on-site maintenance and testing; and the two working modes can be interlocked, so that the safety of manual operation and the working stability of a product are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a relay with a manual operation function. Background Art

[0002] An electromagnetic relay is an electronic control device that is usually used in automatic control circuits. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit.

[0003] The core components of an electromagnetic relay are the magnetic circuit and the contact section. The contact section consists of a moving contact and a stationary contact. When the coil in the magnetic circuit is energized, it generates a magnetic field, which drives the moving contact in the magnetic circuit, closing or opening the contacts. Most existing relays only have electromagnetic actuation, making them inconvenient for on-site maintenance and testing. Utility Model Content

[0004] In response to the technical problems existing in the prior art, the utility model provides a relay with a manual operation function. Through structural improvement, the relay has not only an electromagnetic drive mode but also a manual drive mode, and the two working modes can be interlocked to improve the safety of manual operation and the stability of product operation.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a relay with a manual operation function, comprising a housing component, and a magnetic circuit part, a moving contact part and a static contact part arranged in the housing component, the magnetic circuit part comprising a coil and a movable part for driving the moving contact part to move;

[0006] It also includes an operating member, a chain member and a normally closed switch member. The shell member is provided with a mounting hole, and the operating member is movably mounted in the mounting hole, and the operating member can be operated to push the movable member to move so that the moving contact part and the static contact part are closed; the switch member is arranged in the shell member and is electrically connected to the coil; the chain member can be operated to reciprocate between a locking position and a triggering position, and when the chain member moves to the locking position, the operating member is locked to limit the operating member from pushing the movable member to move, and when the chain member moves to the triggering position, the switch member is triggered to disconnect the switch member.

[0007] Furthermore, it also includes an insulating bracket, which is arranged in the shell component, and the switch component is installed on the bracket; the chain component is slidably connected to the bracket and / or the shell component, and is located between the outer side of the operating component and the switch component, and the chain component is provided with a locking portion at one end facing the operating component to lock the operating component; the chain component is provided with an operating portion, which is movably inserted into the operating port provided in the shell component so that the operating portion can be toggled.

[0008] Furthermore, a positioning structure is provided between the chain element and the bracket and / or the housing component, so that the chain element is positioned at the locking position or the triggering position before being pulled.

[0009] Furthermore, the positioning structure includes an elastic clamping portion provided on the bracket and a first positioning slot and a second positioning slot provided on the chain member, and the elastic clamping portion switches and engages in the first positioning slot and the second positioning slot as the chain member switches positions.

[0010] Furthermore, the operating member is a knob, and the housing component is provided with a spiral guide structure. The knob cooperates with the spiral guide structure so that when the knob is rotated, it performs a spiral motion around its axis and pushes the movable member to move.

[0011] Furthermore, the spiral guide structure includes a plurality of arc-shaped guide blocks arranged on the inner surface of the shell component and distributed around the periphery of the knob, and each arc-shaped guide block is provided with a spiral surface with the same rotation direction on the end face away from the mounting hole, and the knob is provided with a convex portion extending radially outward corresponding to each spiral surface, and each convex portion is slidably fitted on the corresponding spiral surface.

[0012] Furthermore, a clamping groove is provided at one end of the spiral surface away from the mounting hole, and the protrusion is clamped into the clamping groove when sliding to the bottom along the spiral surface.

[0013] Furthermore, an elastic member is provided between the knob and the movable member for driving the knob to reset, and an initial compression amount of the elastic member is greater than a movement stroke of the movable member when the knob pushes the movable member.

[0014] Furthermore, the movable part includes a moving iron core, which is connected to a push rod for driving the moving contact part to move and cooperate with the knob. The elastic part is sleeved outside the push rod and presses against and fits between the knob and the moving iron core.

[0015] Furthermore, the magnetic circuit part includes a yoke frame, a coil frame wound with the coil, and an iron core assembly, and the coil frame is arranged in the yoke frame; the movable part includes a moving iron core, which is arranged in the axial hole of the coil frame and is connected to a push rod, one end of the push rod cooperates with the operating part, and the other end of the push rod cooperates with the moving contact part; the bracket is installed on the yoke frame.

[0016] Furthermore, the moving contact part includes a contact support and a moving contact bridge installed on the contact support. The static contact part is arranged corresponding to the moving contact bridge and includes two static contacts. The two static contacts are respectively provided with static contacts. The two ends of the moving contact bridge are respectively provided with moving contacts arranged opposite to the static contacts on the two static contacts; the movable part cooperates with the contact support to drive the moving contact part to move.

[0017] Furthermore, the moving contact bridge and the static contact part are respectively provided in plurality, and the plurality of moving contact bridges are spaced apart along the length direction of the contact support; the plurality of static contact parts correspond one-to-one to the plurality of moving contact bridges; a contact spring is provided between the moving contact bridge and the contact support, and the contact spring is located on the side of the moving contact bridge facing away from the static contact.

[0018] Furthermore, the shell component includes a base, an outer shell and a middle cover, the middle cover is connected to the base and encloses a contact cavity, the outer shell is connected to the base and / or the middle cover and encloses a magnetic circuit cavity, the moving contact part and the static contact part are arranged in the contact cavity, and the static contact part is inserted into the base, and the magnetic circuit part is arranged in the magnetic circuit cavity; the mounting hole and the operating port are respectively arranged on the outer shell.

[0019] Furthermore, the switch element is connected in series with the coil; the switch element is a micro switch, and its trigger piece is located on the side of the chain element facing away from the operating element so as to be triggered by the chain element.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention includes an operating member that is movably mounted in a mounting hole of a housing component and can be operated to push the movable member to move, thereby closing the movable contact portion and the static contact portion. Thus, the present invention has a manual operation function, thereby enabling the present invention to have two operating modes: electromagnetic drive and manual drive, to facilitate on-site maintenance and testing by personnel. Furthermore, the present invention also includes a switch member electrically connected to the coil and a chain member operable to reciprocate between a locked position and a trigger position. When the chain member moves to the locked position, it locks the operating member, preventing the operating member from pushing the movable member to move. When the chain member moves to the trigger position, it triggers the switch member, disconnecting the switch member and preventing the coil from being energized. Thus, the present invention can interlock the two operating modes, thereby improving the safety of manual operation and the stability of product operation.

[0022] 2. The present invention further includes the aforementioned bracket, which serves as a mounting carrier for the switch and interlocking member, making installation of the switch and interlocking member more convenient and stable. In particular, the interlocking member employs a sliding mechanism for position switching, further enhancing the convenience of interlocking member installation and operation.

[0023] 3. The positioning structure is set so that the interlocking member can be stably in the locked position or the triggered position when not being operated, and will not change its position due to vibration or the like.

[0024] 4. The operating member is a knob that cooperates with a spiral guide structure provided on the housing component, enabling the knob to convert rotational torque into axial propulsion and providing relatively simple operation. Specifically, the spiral guide structure includes multiple arc-shaped guide blocks, each with a spiral surface. This simplifies the knob-to-housing coordination structure, resulting in a simple process, reliable coordination, and no frictional release of plastic chips.

[0025] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments; however, the present invention is not limited to the embodiments of the relay with manual operation function. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an exploded schematic diagram of the utility model;

[0027] Figure 2 This is an exploded schematic diagram of the knob, micro switch, interlocking parts, etc. of the utility model;

[0028] Figure 3 This is an exploded schematic diagram of the housing, knob, and interlocking parts of the utility model;

[0029] Figure 4 This is a structural diagram of the housing, knob, and interlocking parts of the utility model in an assembled state;

[0030] Figure 5 This is a schematic diagram of the three-dimensional structure of the utility model (excluding the housing);

[0031] Figure 6 It is a schematic diagram of the overall structure of the utility model;

[0032] Figure 7 It is a right side view of the utility model;

[0033] Figure 8 yes Figure 7 AA section view;

[0034] Figure 9 yes Figure 8 An enlarged schematic diagram of part B;

[0035] In the figure: 1. Base; 11. Compartment; 2. Middle cover; 3. Housing; 31. Mounting hole; 32. Operation port; 33. Guide stopper; 34. Arc guide block; 341. Helical surface; 342. Slot; 4. Moving contact; 41. Contact support; 42. Moving spring; 43. Moving contact; 44. Contact spring; 45. Return spring; 5. Stationary contact; 51. Stationary spring; 52. Stationary contact; 53. Contact lead; 6. Magnetic circuit; 61. Moving contact Iron core; 62, push rod; 63, yoke frame; 64, coil frame; 65, coil; 66, static iron core; 7, knob; 71, protrusion; 72, limit slot; 73, first operating slot; 8, interlocking piece; 81, locking part; 82, operating part; 83, second operating slot; 84, slide slot; 85, first positioning slot; 86, second positioning slot; 9, micro switch; 91, trigger piece; 10, bracket; 101, elastic clamping part; 102, slide rail; 20, elastic part. DETAILED DESCRIPTION

[0036] In this utility model, the terms "first" and "second" are used only to distinguish similar objects, not to describe a specific order or precedence, and should not be understood as indicating or implying relative importance. In the description, the use of "upper," "lower," "inner," and "outer" to indicate directions or positional relationships is based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of describing this utility model, and does not indicate or imply that the device referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, it should not be understood as limiting the scope of protection of this utility model. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0037] In the description of this utility model, unless otherwise specified, "plurality" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0038] See Figures 1-9 As shown, a relay with a manual operation function according to the present invention includes a housing, a magnetic circuit portion 6, a movable contact portion 4, and a stationary contact portion 5 disposed within the housing. The magnetic circuit portion 6 includes a coil 65 and a movable member for driving the movable contact portion 4. The present invention also includes an operating member, a locking member 8, and a normally closed switch member capable of controlling whether the coil 65 is energized. The housing has a mounting hole 31. The operating member is movably mounted within the mounting hole 31 and can be operated to move the movable member, thereby closing the movable contact portion 4 and the stationary contact portion 5. The switch member is disposed within the housing and electrically connected to the coil 65. Specifically, the switch member and the coil 65 are connected in series. The locking member 8 is movably disposed within the housing and can be operated to reciprocate between a locked position and a triggered position. When the locking member 8 moves to the locked position, it locks the operating member, preventing the operating member from moving the movable member. When the locking member 8 moves to the triggered position, it triggers the switch member, causing it to open, thereby preventing the coil 65 from being energized.

[0039] In this embodiment, the shell components include a base 1, a shell 3 and a middle cover 2. The middle cover 2 is connected to the base 1 and encloses a contact cavity. The shell 3 is connected to the base 1 and / or the middle cover 2 and encloses a magnetic circuit cavity. In this embodiment, the shell 3 is connected to the middle cover 2, but it is not limited to this. In other embodiments, the shell 3 is connected to the base 1, or the shell 3 is connected to both the base 1 and the middle cover 2. Specifically, the base 1 is snap-connected to the middle cover 2, and the middle cover 2 is snap-connected to the shell 3, but the snap-connection method can be replaced by other methods such as screw connection, ultrasonic welding, etc. The above-mentioned moving contact part 4 and static contact part 5 are arranged in the contact cavity, and the static contact part 5 is inserted into the base 1, and the magnetic circuit part 6 is arranged in the magnetic circuit cavity. The utility model can use the middle cover 2 to form a contact cavity and a magnetic circuit cavity separated from each other, thereby achieving isolation between strong and weak electricity and improving the safety performance of the utility model. In other embodiments, the housing component only includes the base 1 and the shell 3 , which together form an inner cavity of the housing component.

[0040] The magnetic circuit part 6 comprises a yoke frame 63 in vertical frame type, a coil frame 64 with a coil 65 wound thereon, a core assembly arranged in the axial hole of the coil frame 64, and the yoke frame 63 is provided with a corresponding clearance hole at each end of the core assembly in the axial direction of the core assembly. The core assembly comprises a movable part and a static core 66, the movable part comprises a moving core 61, the moving core 61 is coaxially connected with a push rod 62, one end of the push rod 62 is matched with the operating part, the static core 66 is located on the side of the moving core 61 away from the operating part and is fixedly arranged in the yoke frame 63, the other end of the push rod 62 passes through the static core 66 and is matched with the moving contact part 4. In other embodiments, the core assembly further comprises a static core located above the moving core and fixed to the yoke frame.

[0041] The moving contact part 4 comprises a contact support 41 and a moving contact bridge 42 arranged on the contact support 41, and the static contact part 5 is arranged corresponding to the moving contact bridge 42 and comprises two static contact heads 51, each of which is provided with a static contact point 52, and each end of the moving contact bridge 42 is provided with a moving contact point 43 arranged opposite to the static contact point 52 on the two static contact heads 51. The other end of the push rod 62 is matched with the contact support 41 to drive the moving contact part 4 to act. Further, the moving contact bridge 42 and the static contact part 5 are respectively provided in plurality, the plurality of moving contact bridges 42 are distributed along the length direction of the contact support 41, and the plurality of static contact parts 5 correspond to the plurality of moving contact bridges 42 one by one. A contact spring 44 is arranged between the moving contact bridge 42 and the contact support 41, and the contact spring 44 is located on the side of the moving contact bridge 42 away from the static contact head 51 to provide contact overtravel and dynamic closing pressure. The contact support 41 is movably arranged in the base 1 and is provided with a reset spring 45 between the contact support 41 and the base 1 to drive the contact support 41 to reset in the direction of disconnecting the moving contact point 43 from the static contact point 52. The static contact head 51 is inserted into the base 1.

[0042] In the embodiment, the moving contact bridge 42 and the static contact part 5 are respectively taken as four examples, but are not limited thereto, and thus the utility model is applicable to the three-phase four-wire system or the three-phase five-wire system of the alternating current power system. The base 1 is provided with a plurality of separation cavities 11 distributed along the length direction of the contact support 41 and spaced from each other, the plurality of separation cavities 11 correspond to the plurality of moving contact bridges 42 one by one, and each of the moving contact bridge 42 and the static contact part 5 is arranged in the corresponding separation cavity 11, so that the creepage distance between adjacent phases can be greatly improved.

[0043] The utility model also includes the support 10 of insulation, this support 10 is located in the shell component, and the switch piece is installed in this support 10. The interlocking piece 8 is slidably connected with the support 10 and / or the shell component, and is located between the operating piece outside and the switch piece, and the one end of interlocking piece 8 towards operating piece is equipped with locking portion 81, to be used for locking operating piece. Interlocking piece 8 is equipped with operating portion 82, and the operating portion 82 is movably arranged in the operating mouth 32 of shell component, so that operating portion 82 can be dialled. The mounting hole 31, operating mouth 32 are arranged in the shell 3, and specifically arranged in the top wall of shell 3, and are arranged along the length direction of shell 3. As shown in the figure, Figure 2-Figure 4 Interlocking piece 8 is slidably connected with the support 10 and shell 3: interlocking piece 8 is equipped with the sliding groove 84 extending along its length direction, and is slidably connected with the slide rail 102 of support 10; the inner surface of shell 3 is equipped with two oppositely arranged guide limit blocks 33, and the arrangement direction of the two guide limit blocks 33 is perpendicular to the sliding direction of interlocking piece 8, and interlocking piece 8 is slidably connected between the two guide limit blocks 33.

[0044] The support 10 is installed in the magnetic circuit part 6, and specifically, in the embodiment, the support 10 is installed on the outside of the yoke frame 63, as shown in the figure, Figure 5 In the embodiment, the switch piece is exemplified by the microswitch 9, but is not limited to this, and the microswitch 9 is locked on one side of the support 10 by a plurality of screws, and the trigger piece 91 of the microswitch 9 is located on the side of the interlocking piece 8 away from the operating piece, so that it can be triggered by the interlocking piece 8.

[0045] In the embodiment, the positioning structure is arranged between the interlocking piece 8 and the support 10 and / or the shell component, so that the interlocking piece 8 is positioned in the locking position or the triggering position before being dialled. Specifically, as shown in the figure, Figure 2 , Figure 3 The positioning structure includes the elastic clamping portion 101 arranged on the support 10 and the first positioning groove 85 and the second positioning groove 86 arranged on the interlocking piece 8, and the elastic clamping portion 101 is switched and clamped in the first positioning groove 85 and the second positioning groove 86 as the interlocking piece 8 switches positions. The first positioning groove 85 and the second positioning groove 86 are specifically arranged on the inner side surface of the sliding groove 84 of the interlocking piece 8, and the elastic clamping portion 101 is arranged on one side of the slide rail 102 of the support 10. In other embodiments, the first positioning groove 85 and the second positioning groove 86 are arranged on the support 10, and the elastic clamping portion 101 is arranged on the second interlocking piece 8. In other embodiments, the positioning structure is arranged between the interlocking piece 8 and the shell 3.

[0046] In the embodiment, the operating piece is the knob 7, the shell component is provided with a spiral guide structure, and the knob 7 is matched with the spiral guide structure, so that the knob 7 makes spiral motion around its axis direction when being rotated and operated, and drives the movable piece to move. As shown in the figure, Figure 3 , Figure 4As shown, the spiral guide structure comprises a plurality of arc-shaped guide blocks 34 arranged on the inner surface of the shell 3 and distributed around the periphery of the knob 7, each arc-shaped guide block 34 is provided with a spiral surface 341 of the same rotation direction at the end away from the mounting hole 31, and the knob 7 is provided with a protrusion 71 extending radially outward corresponding to each spiral surface 341, each protrusion 71 is slidingly fitted on the corresponding spiral surface 341. In the embodiment, two arc-shaped guide blocks 34 and two protrusions 71 are taken as examples, but not limited thereto, and the two protrusions 71 are located in the same radial direction of the knob 7. Each spiral surface 341 is provided with a clamping groove 342 at the end away from the mounting hole 31, and the protrusion 71 is clamped in the clamping groove 342 when sliding to the bottom of the spiral surface 341. In this way, the knob 7 can be kept at the lowest position (i.e. the closed position: the position of the contact closed) under the action of the elastic member described below after being operated, preventing the knob 7 from sliding back to the highest position (i.e. the open position: the position of the contact open) under the vibration condition, and also allowing the user to rotate the knob 7 without needing to keep pressing the knob 7.

[0047] In the embodiment, the elastic member 20 is arranged between the knob 7 and the movable element for driving the knob 7 to reset, and the initial compression amount of the elastic member 20 is greater than the movement stroke of the movable element when being pushed by the knob 7. Since the movable element comprises a moving iron core 61 coaxially connected with a push rod 62, the elastic member 20 is specifically sleeved outside the push rod 62 and abuttingly fitted between the knob 7 and the moving iron core 61. In this way, the knob 7 is always kept at the highest position before being operated, and does not affect the normal working state of the magnetic circuit part 6. The elastic member 20 is implemented by a spiral spring, but not limited thereto. The top of the knob 7 is provided with a limiting groove 72, and the top end of the elastic member 20 and one end of the push rod 62 are respectively inserted into the limiting groove 72, as shown. Figure 8 、 Figure 9

[0048] The rotation angle of the knob 7 is about 90° each time, but not limited thereto, and the outer surface of the shell 3 is provided with "ON" and "OFF" indicating marks at both ends of the rotation angle range of the knob 7; the exposed end of the knob 7 is provided with a first operation groove 73 and an arrow indicating mark, so as to facilitate the rotation of the knob 7 by the staff with the tool, as shown. Figure 6 ​As shown. The outer surface of the shell 3 is provided with "electric" and "manual" labels on one side of the operating port 32 to indicate the current position of the chain 8. When the operating portion 82 of the chain 8 is located at the "electric" label, it indicates that the chain 8 is currently in the locked position. When the operating portion 82 of the chain 8 is located at the "manual" label, it indicates that the chain 8 is currently in the trigger position. The operating portion 82 of the chain 8 is flush with the outer surface of the shell 3, and a second operating groove 83 is provided at the exposed end of the operating portion 82, which can greatly reduce the possibility of the operating portion 82 being misoperated. Similarly, the exposed end of the knob 7 can also be set to be flush with the outer surface of the shell 3 to reduce the possibility of the knob 7 being misoperated. The above-mentioned operating grooves can be a straight groove or a cross groove, etc.

[0049] The present invention provides a relay with a manual operation function, which has two working modes: electromagnetic drive and manual drive. In the electromagnetic drive mode, the knob 7 is in the highest position, and the operating portion 82 of the chain member 8 is at the "electric" mark, that is, the chain member 8 is currently in the locked position, so that its locking portion 81 extends below the knob 7, thereby restricting the knob 7 from pushing the movable iron core 61 and the push rod 62 downward. In the electromagnetic drive mode, when the coil 65 is energized, the magnetic circuit portion 6 generates a magnetic field, and the movable iron core 61 is attracted by the static iron core 66 and moves downward with the push rod 62. The push rod 62 pushes the movable contact portion 4 downward, so that each movable contact 43 is closed with the corresponding static contact 52. During this process, since the initial compression of the elastic member 20 is greater than the movement stroke of the movable iron core 61, the knob 7 will always remain in the highest position. When the coil 65 is de-energized, the magnetic field generated by the magnetic circuit portion 6 disappears, and the movable contact portion 4 is reset upward under the action of the reset spring 45, disconnecting the movable contact 43 from the static contact 52, and linking the push rod 62 and the movable iron core 61 to reset upward.

[0050] The manual driving mode of the present invention is as follows: first, insert the operating portion 82 of the chain member 8 into the second operating slot 83 with the help of a tool, and move the chain member 8 toward the trigger position, so that the operating portion 82 of the chain member 8 is at the "manual" mark. At the same time, the locking portion 81 of the chain member 8 leaves the knob 7, canceling the restriction on the knob 7, and the chain member 8 triggers the micro switch 9, so that the micro switch 9 switches from the closed state to the open state, so that the coil 65 cannot be energized, ensuring the safety of manual operation on site by the staff. Next, a tool is inserted into the first operating groove 73 on the upper surface of the knob 7, and the knob 7 is slightly pressed downward, causing it to rotate 90°. During this process, the two protrusions 71 of the knob 7 slide downward along the spiral surfaces 341 of the two arc-shaped guide blocks 34, causing the knob 7 to achieve spiral motion and push the push rod 62 downward, causing the movable iron core 61 to move downward until it contacts the static iron core 66. At the same time, the push rod 62 pushes the movable contact portion 4 downward, causing each movable contact 43 to close with the corresponding static contact 52. When the knob 7 spirals downward to the bottom, its two protrusions 71 respectively snap into the slots 342 at the bottom end of the spiral surface 341, automatically maintaining the knob 7 in the lowest position. When the contacts need to be disconnected, it is only necessary to push the knob 7 with a little force so that its various protrusions 71 respectively exit the slots 342. The knob 7 can then spirally move upward under the action of the restoring force of the elastic member 20, thereby releasing the push rod 62. The moving contact part 4 then returns upward under the action of the return spring 45, disconnecting the moving contact 43 from the static contact 52, and linking the push rod 62 and the moving iron core 61 to return upward.

[0051] The present invention provides a relay with a manual operation function, which has two operating modes: electromagnetic drive and manual drive, facilitating on-site maintenance and testing by personnel. In addition, the present invention employs a locking member 8 and a micro switch 9 to interlock the two operating modes, thereby improving the safety of manual operation and the stability of product operation: in the electromagnetic drive mode, the knob 7 is locked, making it less likely to be misoperated and thus affecting the normal operation of the product in the electromagnetic drive mode; in the manual drive mode, the circuit containing the coil 65 is disconnected, preventing the coil 65 from being energized, thereby ensuring the safety of personnel performing on-site manual maintenance and testing.

[0052] The present invention also realizes a layout in which the magnetic circuit part 6 is on top and the contact part (including the moving contact part 4 and the static contact part 5) is on the bottom, so that the coil lead pins of the magnetic circuit part 6 and the contact lead piece 53 of the static contact part 5 can be led downward, so that when the present invention is used, each lead pin can be directly plugged into the circuit board to realize electrical connection, making the product installation space smaller and the structure more compact.

[0053] The utility model provides a relay with a manual operation function, and the unrelated parts are the same as those in the prior art or can be implemented by using the prior art.

[0054] The above embodiments are only used to further illustrate a relay with a manual operation function of the present invention, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the scope of protection of the technical solution of the present invention.

Claims

1. A relay with a manual operation function, comprising a housing, a magnetic circuit, a moving contact, and a stationary contact disposed within the housing, wherein the magnetic circuit comprises a coil and a movable member for driving the moving contact; characterized in that: It also includes an operating member, a chain member and a normally closed switch member. The shell member is provided with a mounting hole, and the operating member is movably mounted in the mounting hole, and the operating member can be operated to push the movable member to move so that the moving contact part and the static contact part are closed; the switch member is arranged in the shell member and is electrically connected to the coil; the chain member can be operated to reciprocate between a locking position and a triggering position, and when the chain member moves to the locking position, the operating member is locked to limit the operating member from pushing the movable member to move, and when the chain member moves to the triggering position, the switch member is triggered to disconnect the switch member.

2. The relay with manual operation function according to claim 1, characterized in that: It also includes an insulating bracket, which is arranged in the shell component, and the switch component is installed on the bracket; the chain component is slidably connected to the bracket and / or the shell component, and is located between the outer side of the operating component and the switch component, and the chain component is provided with a locking portion at one end facing the operating component to lock the operating component; the chain component is provided with an operating portion, which is movably inserted into the operating port provided in the shell component so that the operating portion can be toggled.

3. The relay with manual operation function according to claim 2, characterized in that: A positioning structure is provided between the chain element and the bracket and / or the housing component, so that the chain element is positioned at the locking position or the triggering position before being pulled.

4. The relay with manual operation function according to claim 3, characterized in that: The positioning structure includes an elastic clamping portion provided on the bracket and a first positioning slot and a second positioning slot provided on the chain member. The elastic clamping portion switches and engages in the first positioning slot and the second positioning slot as the chain member switches positions.

5. The relay with manual operation function according to claim 1, characterized in that: The operating member is a knob, and the housing component is provided with a spiral guide structure. The knob cooperates with the spiral guide structure so that when the knob is rotated, it performs a spiral motion around its axis and pushes the movable member to move.

6. The relay with manual operation function according to claim 5, characterized in that: The spiral guide structure includes a plurality of arc-shaped guide blocks arranged on the inner surface of the shell component and distributed around the periphery of the knob. The end face of each arc-shaped guide block away from the mounting hole is provided with a spiral surface with the same rotation direction. The knob is provided with a convex portion extending radially outward corresponding to each spiral surface, and each convex portion is slidably fitted on the corresponding spiral surface.

7. The relay with manual operation function according to claim 6, characterized in that: A clamping groove is respectively provided at one end of the spiral surface away from the mounting hole, and the protrusion is clamped into the clamping groove when sliding to the bottom along the spiral surface.

8. The relay with manual operation function according to any one of claims 5 to 7, characterized in that: An elastic member is provided between the knob and the movable member for driving the knob to reset, and an initial compression amount of the elastic member is greater than a movement stroke of the movable member when the knob pushes the movable member.

9. The relay with manual operation function according to claim 8, characterized in that: The movable part includes a moving iron core, which is connected to a push rod for driving the moving contact part to move and cooperate with the knob. The elastic part is sleeved outside the push rod and presses against and fits between the knob and the moving iron core.

10. The relay with manual operation function according to any one of claims 2-3, characterized in that: The magnetic circuit part includes a yoke frame, a coil frame wound with the coil, and an iron core assembly, and the coil frame is arranged in the yoke frame; the movable part includes a moving iron core, which is arranged in the axial hole of the coil frame and is connected to a push rod, one end of the push rod cooperates with the operating part, and the other end of the push rod cooperates with the moving contact part; the bracket is installed on the yoke frame.

11. The relay with manual operation function according to claim 1, characterized in that: The moving contact part includes a contact support and a moving contact bridge installed on the contact support. The static contact part is arranged corresponding to the moving contact bridge and includes two static contacts. The two static contacts are respectively provided with static contact points. The two ends of the moving contact bridge are respectively provided with moving contacts arranged opposite to the static contacts on the two static contacts. The movable part cooperates with the contact support to drive the moving contact part to move.

12. The relay with manual operation function according to claim 11, characterized in that: The moving contact bridge and the static contact part are respectively provided in plurality, and the plurality of moving contact bridges are spaced apart along the length direction of the contact support; the plurality of static contact parts correspond one to one with the plurality of moving contact bridges; a contact spring is provided between the moving contact bridge and the contact support, and the contact spring is located on the side of the moving contact bridge facing away from the static contact.

13. The relay with manual operation function according to any one of claims 2-3, characterized in that: The shell component includes a base, an outer shell and a middle cover. The middle cover is connected to the base and encloses a contact cavity. The outer shell is connected to the base and / or the middle cover and encloses a magnetic circuit cavity. The moving contact part and the static contact part are arranged in the contact cavity, and the static contact part is inserted into the base. The magnetic circuit part is arranged in the magnetic circuit cavity; the mounting hole and the operating port are respectively arranged on the outer shell.

14. The relay with manual operation function according to any one of claims 1 to 4, characterized in that: The switch element is connected in series with the coil; the switch element is a micro switch, and its trigger piece is located on the side of the chain element facing away from the operating element so as to be triggered by the chain element.

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