Contactor with signal feedback

Abstract

The utility model discloses a contactor with signal feedback. The contactor comprises a base, a pedestal, a contact support, a reset spring and an electromagnetic system. The base is fixed above the base, and the electromagnetic system is arranged in a space formed by the base and the base; the electromagnetic system comprises a coil, a magnet yoke and an armature, and the armature is fixed on the contact support; when the electromagnetic system is electrified, the armature is attracted to slide, so that the contact support slides towards a first direction; the reset spring is used for driving the contact support to slide towards a second direction after the electromagnetic system loses power; the device is characterized in that a detection switch is fixed in the base, and when the contact support slides along a first direction, the contact support directly or indirectly acts on the detection switch to trigger the detection switch; the circuit has the characteristic of built-in signal feedback.

Description

Technical Field

[0001] The present application relates to the electrical field of low-voltage switches, and is a contactor with signal feedback. Background Art

[0002] In the field of contactors, in order to realize the on-off signal feedback of contactors, technicians in this field can undoubtedly think of using auxiliary contacts to achieve it. The existing contactors with auxiliary contacts are mainly in the following two forms:

[0003] Taking the form of built-in contactor as an example, such as the structure disclosed in CN205789759U, it is equivalent to adding a set of auxiliary contacts on the contact support of the contactor, and the contactor is connected / disconnected through this set of auxiliary contacts. This auxiliary contact can also be used as the on / off signal feedback of the contactor. However, this structure will occupy more space in the contactor, which is equivalent to adding an extra set of installation space for the contact support, housing and other components.

[0004] Taking the form of external contactor as an example, there are two types: top hanging and side hanging, such as the top hanging structure disclosed in CN217405340U, and the side hanging structure disclosed in CN205335186U. These two types of auxiliary contacts can also be used as on-off signal feedback of the contactor.

[0005] However, the application scenarios of contactors are very wide. For example, in some elevator, motor and other starting fields, it is necessary to sample the on-off signal of the contactor and use the sampled signal as electrical interlock. However, if a group of side-mounted or top-mounted contacts are used for sampling on-off signals and used as electrical interlock, the contactor will lose a group of external auxiliary contacts. If the existing built-in auxiliary contact structure is used, the structure is relatively complex and the product volume is unnecessarily increased.

[0006] In summary, how to design a new signal feedback structure built into the contactor is also a direction worthy of research. Summary of the invention

[0007] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide a contactor with signal feedback.

[0008] The present application provides: a contactor with signal feedback, comprising a base, a pedestal, a contact support, a reset spring and an electromagnetic system; the base is fixed above the base, and the electromagnetic system is arranged in a space formed by the base and the pedestal; the electromagnetic system comprises a coil, a yoke and an armature, and the armature is fixed on the contact support; when the electromagnetic system is energized, the armature is attracted and slides, so that the contact support slides in a first direction; the reset spring is used to drive the contact support to slide in a second direction after the electromagnetic system loses power; it is characterized in that: a detection switch is fixed in the base, and when the contact support slides along the first direction, the contact support directly or indirectly acts on the detection switch to trigger the detection switch.

[0009] With this structure, since a detection switch is built into the base of the contactor, the contactor can be supported to trigger the detection switch, thereby realizing the on-off signal feedback of the contactor. Compared with the built-in auxiliary contact structure in the prior art, this structure is very simple and does not occupy the external auxiliary contact structure.

[0010] In some embodiments of the present application, the detection switch is a micro switch, a travel switch, a Hall effect switch, or a photoelectric switch.

[0011] With this structure, signal feedback can be achieved regardless of whether the detection switch is a micro switch, a travel switch, a Hall effect switch or a photoelectric switch.

[0012] In some embodiments of the present application, a contact support slider is provided on the contact support, and when the contact support slides along the first direction, the contact support slider is used to directly act on the detection switch to trigger the detection switch.

[0013] With this structure, the detection switch is triggered directly by the contact supporting slider, which has the characteristic of simple transmission structure.

[0014] In some embodiments of the present application, a contact support slider is provided on the contact support; a movable part and a reset part are also provided on the base, and the detection switch is located within the movable track of the movable part; when the contact support slides along a first direction, the contact support slider acts on the movable part, and the movable part acts on the detection switch to trigger the detection switch; the reset part is used to drive the movable part to reset when the contact support slides in a second direction.

[0015] With this structure, a reset part and a movable part are used so that the contact support indirectly triggers the detection switch. Such a structure can prevent the impact force of the contact support from being too large, which directly causes damage to the detection switch.

[0016] In some embodiments of the present application, the movable part is configured to slide, and the sliding direction is the same as the sliding direction of the contact support; when the contact support slides along a first direction, the contact support slider pushes the movable part to slide in the first direction, and the movable part triggers the detection switch.

[0017] With this structure, the movable part with the sliding direction consistent with the contact support has the characteristics of simpler transmission structure and simpler trigger structure.

[0018] In some embodiments of the present application, a guide structure is provided between the base and the movable member, and the guide structure is used to guide the sliding of the movable member.

[0019] The design of the guide structure can make the sliding of the moving parts more stable.

[0020] In some embodiments of the present application, a guide column is provided on the base, a guide hole is opened on the movable part, and the guide column is inserted into the guide hole to guide the sliding of the movable part.

[0021] The structure of the guide column and the guide hole has the characteristics of simple molding and good guiding effect.

[0022] In some embodiments of the present application, a guide column is provided on the base, a guide hole is opened on the movable part, a reset part is sleeved on the guide column with one end abutting against the movable part and the other end abutting against the base, and the guide column is inserted into the guide hole to guide the sliding of the movable part.

[0023] The reset member is designed in this way, so that the internal structure can be made more compact. The reset member can directly use the space of the guide column, making the structure more compact.

[0024] In some embodiments of the present application, the movable part includes an abutment platform and two wing plates, and the two wing plates are arranged on both sides of the abutment platform; the abutment platform is used to cooperate with the contact support slider; the number of guide holes and guide columns is two, and the guide holes are arranged on the two wing plates.

[0025] The movable part adopts this structural design, which is beneficial to the design of the guide hole, and can also make the shape of the movable part more uniform and symmetrical, which is beneficial to the smooth sliding of the movable part and the triggering of the detection switch.

[0026] In some embodiments of the present application, the movable part is configured to slide, and the sliding direction is perpendicular to the sliding direction of the contact support. There is an inclined transmission relationship between the contact support slider and the movable part. When the contact support slides along the first direction, it pushes the movable part to slide, and the movable part triggers the detection switch.

[0027] By using such a movable part whose sliding direction is perpendicular to the contact support movement direction, effective triggering of the detection switch can also be achieved.

[0028] In some embodiments of the present application, the movable member is rotatably arranged, one end of the movable member corresponds to the contact support slider, and when the contact support slides along the first direction, it pushes the movable member to rotate, and the movable member triggers the detection switch.

[0029] The movable part with such a rotating arrangement has a relatively simple structure and is also conducive to triggering the movable part.

[0030] In some embodiments of the present application, a reset spring mounting hole is provided on the contact support slider, a spring mounting portion is provided on the bottom plate of the base, one end of the reset spring abuts against the reset spring mounting hole, and the other end is provided on the spring mounting portion.

[0031] The use of this method of installing the return spring will make the installation of the return spring more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 A three-dimensional diagram of a contactor according to Embodiment 1 of the present application is shown;

[0034] Figure 2 A cross-sectional view of a contactor according to Embodiment 1 of the present application is shown;

[0035] Figure 3 A cross-sectional view showing the cooperation between the contact support and the armature in the contactor of Embodiment 1 of the present application is shown;

[0036] Figure 4 The structure diagram and partial enlarged diagram of the detection switch, contact support and base in the contactor of Example 1 of the present application are shown;

[0037] Figure 5 A schematic diagram of the structure of the movable parts in the contactor of Example 1 of the present application is shown;

[0038] Figure 6 A cross-sectional view of the installation location of the reset member and the reset spring in the contactor of Example 1 of the present application is shown;

[0039] Figure 7 The embodiment of the direct contact between the detection switch and the contact support in the contactor of Example 1 of the present application is shown;

[0040] Figure 8 Another implementation method of the detection switch and contact support in the contactor of Example 1 of the present application is shown;

[0041] Fig. 9 Another implementation method of the detection switch and contact support in the contactor of Example 1 of the present application is shown. DETAILED DESCRIPTION

[0042] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] In addition, the terms "primary" and "secondary" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "primary" and "secondary" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, the main feature being "above" or "below" the second feature may mean that the main feature is in direct contact with the second feature, or that the main feature is in indirect contact with the second feature through an intermediate medium. Moreover, the main feature being "above", "above" and "above" the second feature may mean that the main feature is directly above or obliquely above the second feature, or simply means that the main feature is higher in level than the second feature. The main feature being "below", "below" and "below" the second feature may mean that the main feature is directly below or obliquely below the second feature, or simply means that the main feature is higher in level and has a lower electrical connection with the three-phase power supply than the second feature. Example

[0047] like Figure 1-Figure 9 As shown, an embodiment of the present application provides a contactor, which is a contactor with signal feedback.

[0048] The contactor includes a housing structure, a contact assembly 200 , a return spring 700 and an electromagnetic system 300 .

[0049] The housing structure includes a base 101, a pedestal 102, an upper cover 103 and a top cover 104. The base 102 is located on the base 101, the upper cover 103 is located on the base 102, and the top cover 104 is located on the upper cover 103. Here, the base 102 and the base 101 are fastened by bolts, and the top cover 104, the upper cover 103 and the base 102 are also fastened by bolts.

[0050] The contact assembly 200 is distributed in the space formed by the base 102 and the upper cover 103, and includes a contact support 201, a moving contact 202 and a stationary contact 203. The moving contact 202 is fixed on the contact support 201, and the stationary contact 203 is distributed around the moving contact 202. The contact support 201 is set to slide, and slides under the action of the electromagnetic system 300 and the reset spring 700. Under the action of the electromagnetic system 300, the contact support 201 slides in the first direction, or it can be said that it slides downward, to achieve the connection between the moving and stationary contacts 203. Under the action of the reset spring 700, the contact support 201 slides in the second direction, or it can be said that it slides upward, to achieve the separation of the moving and stationary contacts 203.

[0051] The electromagnetic system 300 is distributed in the space formed by the base 102 and the base 101, and includes an armature 301, a yoke 302, a coil 303, and a skeleton 304. The armature 301 is fixed to the contact support 201 through a fixing plate 204, and the yoke 302, the coil 303, the skeleton 304, etc. are arranged below the armature 301. When the coil 303 is energized, the armature 301 is attracted to slide by the principle of the electromagnet, and the contact support 201 will slide along with the armature 301.

[0052] The detection switch 400 is disposed in the base 101 , and is directly or indirectly triggered when the contact support 201 moves in the first direction (downward), so that the on-off signal feedback of the contactor can be realized by whether the detection switch 400 is triggered or not.

[0053] Here, there are many types of detection switches 400. In this embodiment, a micro switch is used. Of course, in addition to this, a travel switch, a Hall effect switch, or a photoelectric switch, etc. can also be used, all of which can realize the feedback of the on-off signal.

[0054] Here, the detection switch 400 can be directly triggered by the contact support 201 or indirectly triggered by the contact support 201 .

[0055] Take the case of being directly triggered by the contact support 201 as an example, Figure 7 As shown, a contact support slider 2010 is provided on the contact support 201 . When the contact support 201 moves in a first direction, the contact support slider 2010 directly triggers the detection switch 400 .

[0056] Taking the indirect triggering by the contact support 201 as an example, there are three solutions:

[0057] Option 1: Fig. 9 As shown, the contact support 201 includes a contact support slider 2010, the movable member 500 is rotatably arranged in the base 101, the reset member 600 is arranged to be connected with the movable member 500 and the base 101, and the detection switch 400 is located on one side of the movable member 500. When the contact support 201 moves in a first direction, the contact support slider 2010 will push the movable member 500 to rotate, and the movable member 500 will trigger the detection switch 400 after rotating. When the contact support 201 moves in a second direction, the reset member 600 can drive the movable member 500 to reset. Here, since the movable member 500 is rotatably arranged, the reset member 600 is selected as a torsion spring, which is more conducive to forming a matching relationship with the movable member 500.

[0058] Option 2: Figure 8As shown, the contact support 201 includes a contact support slider 2010, the movable member 500 is slidably arranged in the base 101, the reset member 600 is arranged to be connected to the movable member 500 and the base 101, and the detection switch 400 is located on one side of the movable member 500. Here, the sliding direction of the movable member 500 is perpendicular to the sliding direction of the contact support 201, and the two are transmitted through an inclined plane. That is, when the contact support 201 moves in a first direction, the contact support slider 2010 will push the movable member 500 to slide, and the movable member 500 will trigger the detection switch 400 after sliding. When the contact support 201 moves in a second direction, the reset member 600 can drive the movable member 500 to reset. Here, since the movable member 500 is slidably arranged, the reset member 600 is selected as a compression spring, which is more conducive to forming a matching relationship with the movable member 500.

[0059] Option 3: Figure 2 , Figure 4 as well as Figure 5 As shown, the contact support 201 includes a contact support slider 2010, the movable member 500 is slidably arranged in the base 101, the reset member 600 is arranged to be connected to the movable member 500 and the base 101, and the detection switch 400 is located on one side of the movable member 500. Here, the sliding direction of the movable member 500 is the same as the sliding direction of the contact support 201. In terms of relative position relationship, the contact support 201 is located above the movable member 500, and the movable member 500 is located above the detection switch 400. In this way, when the contact support 201 moves in the first direction, the contact support slider 2010 will press down the movable member 500 to make it slide, and the movable member 500 will trigger the detection switch 400 after sliding. When the contact support 201 moves in the second direction, the reset member 600 can drive the movable member 500 to reset. Here, since the movable member 500 is slidably arranged, the reset member 600 is selected as a compression spring, which is more conducive to forming a matching relationship with the movable member 500.

[0060] As a more preferred implementation of the third scheme, a guide structure can also be provided between the movable part 500 and the base 101, and this guide structure will guide the sliding of the movable part 500. In this implementation, the guide structure adopts a guide post 1010 and a guide hole 5001, the guide post 1010 is provided on the bottom surface of the base 101, and the guide hole 5001 is provided on the movable part 500, so that the guide structure is realized by the guide post 1010 being inserted into the guide hole 5001. In this implementation, the reset member 600 adopts a compression spring, and the compression spring is sleeved on the guide post 1010, which can help reduce the space occupied and make the structure more compact. The number of the guide post 1010, the guide hole 5001, and the reset member 600 is two. The movable part 500 includes an abutment platform 5002 and two wing plates 5003 . The two wing plates 5003 are respectively connected to the two sides of the abutment platform 5002 . The abutment platform 5002 is used to cooperate with the contact support slider 2010 , and the guide holes 5001 are clamped on the two wing plates 5003 .

[0061] Regardless of the above-mentioned method, the number of the contact support sliders 2010 is two, and the number of the return springs 700 is also two. A return spring mounting hole 2011 is provided on the contact support slider 2010, and a return spring mounting portion 1011 is provided on the bottom plate of the base 101. The two ends of the return spring 700 are respectively connected to the return spring mounting hole 2011 and the return spring mounting portion 1011. Here, the return spring mounting portion 1011 is a columnar structure, and of course, a return spring mounting portion 1011 in the form of a groove can also be used.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradiction.

[0063] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A contactor with signal feedback, comprising a base, a pedestal, a contact support, a reset spring and an electromagnetic system; the base is fixed above the base, and the electromagnetic system is arranged in a space formed by the base and the pedestal; the electromagnetic system comprises a coil, a yoke and an armature, and the armature is fixed on the contact support; when the electromagnetic system is energized, the armature is attracted and slides, so that the contact support slides in a first direction; the reset spring is used to drive the contact support to slide in a second direction after the electromagnetic system loses power; it is characterized in that: A detection switch is fixed in the base. When the contact support slides along the first direction, the contact support directly or indirectly acts on the detection switch to trigger the detection switch.

2. A contactor with signal feedback according to claim 1, characterized in that: The detection switch is a micro switch, a travel switch, a Hall effect switch or a photoelectric switch.

3. A contactor with signal feedback according to claim 1, characterized in that: The contact support is provided with a contact support slider. When the contact support slides along the first direction, the contact support slider is used to directly act on the detection switch to trigger the detection switch.

4. A contactor with signal feedback according to claim 1, characterized in that: A contact support slider is provided on the contact support; a movable part and a reset part are also provided on the base, and the detection switch is located within the movable track of the movable part; when the contact support slides along the first direction, the contact support slider acts on the movable part, and the movable part acts on the detection switch to trigger the detection switch; the reset part is used to drive the movable part to reset when the contact support slides to the second direction.

5. A contactor with signal feedback according to claim 4, characterized in that: The movable part is slidably arranged, and the sliding direction is the same as the sliding direction of the contact support; when the contact support slides along a first direction, the contact support slider pushes the movable part to slide in the first direction, and the movable part triggers the detection switch.

6. A contactor with signal feedback according to claim 5, characterized in that: A guide structure is arranged between the base and the movable part, and the guide structure is used for guiding the sliding of the movable part.

7. A contactor with signal feedback according to claim 5, characterized in that: A guide column is arranged on the base, a guide hole is opened on the movable part, and the guide column is inserted into the guide hole to guide the sliding of the movable part; Alternatively, a guide column is provided on the base, a guide hole is opened on the movable part, a reset part is sleeved on the guide column, one end of the reset part abuts against the movable part, and the other end abuts against the base, and the guide column penetrates into the guide hole to guide the sliding of the movable part.

8. A contactor with signal feedback according to claim 7, characterized in that: The movable part comprises an abutment platform and two wing plates, and the two wing plates are respectively arranged on both sides of the abutment platform; the abutment platform is used to cooperate with the contact support slider; the number of guide holes and guide columns are both two, and the guide holes are respectively arranged on the two wing plates.

9. A contactor with signal feedback according to claim 4, characterized in that: The movable member is slidably arranged, and the sliding direction is perpendicular to the sliding direction of the contact support. There is an inclined transmission relationship between the contact support slider and the movable member. When the contact support slides along the first direction, it pushes the movable member to slide, and the movable member triggers the detection switch. Alternatively, the movable member is rotatably arranged, one end of the movable member corresponds to the contact support slider, and when the contact support slides along the first direction, it pushes the movable member to rotate, and the movable member triggers the detection switch.

10. A contactor with signal feedback according to any one of claims 4 to 9, characterized in that: A reset spring mounting hole is provided on the contact support slider, a spring mounting portion is provided on the bottom plate of the base, one end of the reset spring abuts in the reset spring mounting hole, and the other end is provided on the spring mounting portion.

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