Drawer type coil device for contactor

Abstract

The utility model discloses a drawer type coil device for a contactor, which comprises a base, a mounting bottom plate, a coil framework and a drawer seat, the mounting bottom plate is detachably mounted on the base, the drawer seat is movably arranged on the mounting bottom plate, the coil framework is arranged on the drawer seat, and the drawer seat is movably arranged on the mounting bottom plate. The drawer seat comprises a box body and a base body, a sliding rail is arranged on the mounting bottom plate, cylindrical convex parts corresponding to the sliding rail are arranged on the two sides of the base body, and the cylindrical convex parts are arranged in the sliding rail in a sliding mode in the extending direction of the sliding rail. According to the utility model, the drawer seat and the base slide in a limiting manner to realize the drawing of the coil device, and the cylindrical sliding device is arranged, so that the friction force between the drawer seat and the base is reduced under the condition of ensuring the strength, the labor is saved, the operation is convenient, the precision requirement on fit tolerance is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of contactors, and in particular to a drawer-type coil device for a contactor. Background Art

[0002] A contactor is a widely used switching device that uses electromagnetic, pneumatic or hydraulic principles to control the main circuit. The internal coil generates magnetic force when energized. During use, the coil is prone to burn out. The main reasons include excessive power supply voltage, overcurrent or overload, long-term operation, and coil insulation damage. When a fault caused by the above reasons occurs, maintenance is required.

[0003] In the prior art, such as the invention patent mentioned in application number CN201811453401.7, although the coil skeleton can be pulled out by pulling out the drawer seat to perform necessary inspection and maintenance on the coil and the iron core, the pull-out limit device between the drawer seat and the base has a relatively complex structure, a large friction area, and is inconvenient to operate. Therefore, there is room for improvement. Summary of the Invention

[0004] In response to the above problems, the present application proposes a drawer-type coil device for a contactor. By providing a sliding device between the drawer seat and the base, the drawer seat and the base can slide within a limited position to realize the pulling and pulling of the coil device. In addition, a cylindrical sliding device is provided to reduce the friction between the drawer seat and the base while ensuring strength, thereby achieving labor-saving and convenient operation, reducing the precision requirements for fitting tolerances, and reducing production costs. The drawer-type coil device for a contactor is specifically implemented through the following technical solutions:

[0005] A drawer-type coil device for a contactor comprises: a base, a mounting base, a coil skeleton and a drawer seat, wherein the mounting base is detachably mounted on the base, the drawer seat is movably mounted on the mounting base, the coil skeleton is arranged on the drawer seat, the drawer seat comprises a box body and a base, a sliding rail is arranged on the mounting base, cylindrical protrusions are arranged on both sides of the base corresponding to the sliding rail, and the cylindrical protrusions are slidably arranged in the sliding rail along the extension direction of the sliding rail.

[0006] It is further provided that the sliding rail and the mounting base are designed to be bent and formed as an integral part. Through this provision, the casting and bending of the mounting base are facilitated, the strength is improved, and the production efficiency is facilitated.

[0007] It is further configured that the sliding track is configured as a rectangular track open toward one side of the base. Through this configuration, the installation of the cylindrical protrusion on the drawer seat and the sliding track is facilitated, and the limiting connection between the two is firm, so that the sliding of the drawer seat is stable and reliable.

[0008] It is further configured that the sliding rails are provided in two, respectively provided on opposite sides of the mounting base plate; the cylindrical protrusions are provided in four, with each two cylindrical protrusions forming a group, and respectively provided at the end and tail of the side of the base, respectively corresponding to the two ends of the sliding rails. Through this configuration, the overall sliding is further made stable and the force is evenly distributed.

[0009] It is further provided that a mounting hole is provided on the mounting base plate, a threaded hole is provided on the base corresponding to the mounting hole, and the mounting base plate is detachably connected to the base by providing a screw passing through the mounting hole and the thread is provided in the threaded hole. Through this setting, the mounting base plate and the base are firmly and detachably connected, which facilitates the casting and overall assembly of the mounting base plate.

[0010] It is further provided that the coil skeleton includes an iron core and a compression sleeve, the compression sleeve is arranged on the outer periphery of the iron core, and the compression sleeve is provided with a connecting buckle extending toward the drawer seat, and a connecting hole is provided on the base corresponding to the position of the connecting buckle, the connecting buckle passes through the drawer seat and the connecting hole and is engaged with the connecting hole. Through this arrangement, the coil skeleton, the drawer seat and the mounting base are pressed against each other to limit the position, so that the overall structure is stable and compact.

[0011] It is further provided that the connecting buckle and the compression sleeve are of an integrated design, and the extending connecting buckle has deformation capability. Through this provision, the strength of the connecting buckle is improved, and it is convenient to extend the connecting buckle into the connecting hole during installation, thereby facilitating installation.

[0012] In summary, the drawer-type coil device for the contactor is configured by arranging a sliding device on the drawer seat and the base so that the drawer seat and the base can slide within a limited position to realize the pulling and pulling of the coil device, and a cylindrical sliding device is configured to reduce the friction between the drawer seat and the base while ensuring strength, thereby achieving labor-saving and convenient operation, reducing the accuracy requirements for fitting tolerances, and reducing the beneficial effect of reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0014] Figure 1 An exploded diagram of a drawer-type coil device for a contactor provided in an embodiment of the present application;

[0015] Figure 2 A schematic diagram of an exploded drawer-type coil device for a contactor provided in an embodiment of the present application after the base is removed;

[0016] Figure 3 This is a schematic diagram of an exploded view of the drawer-type coil device for a contactor provided in an embodiment of the present application, excluding the coil skeleton and the drawer seat.

[0017] Among them, the reference numerals in the figures are:

[0018] 1. Base; 2. Mounting base; 3. Coil skeleton; 4. Drawer seat; 5. Box body; 6. Base; 7. Sliding track; 8. Cylindrical protrusion; 9. Mounting hole; 10. Threaded hole; 11. Iron core; 12. Compression sleeve; 13. Connecting buckle; 14. Connecting hole. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0020] The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor does it mean independent or alternative embodiments that are mutually exclusive with other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] The present application is now further described with reference to the accompanying drawings and specific embodiments:

[0022] Please also refer to Figures 1 to 3 , a drawer-type coil device for a contactor, comprising: a base 1, a mounting base plate 2, a coil skeleton 3 and a drawer seat 4, wherein the mounting base plate 2 is detachably mounted on the base 1, the drawer seat 4 is movably arranged on the mounting base plate 2, and the coil skeleton 3 is arranged on the drawer seat 4, and the drawer seat 4 includes a box body 5 and a base 6. A sliding rail 7 is provided on the mounting base plate 2, and cylindrical protrusions 8 are provided on both sides of the base body 6 corresponding to the sliding rail 7. The cylindrical protrusion 8 is slidably arranged in the sliding rail 7 along the extension direction of the sliding rail 7. In this way, the mounting base plate 2 is set to a material with high strength and high tolerance to extreme temperatures. During use, it can better withstand the large action impact of the contactor caused by the large current and voltage, and will not cause the sliding rail 7 to break or deformation of various parts. Secondly, in conditions such as ice and snow weather or extremely high temperature environments, the material will not become brittle or soften, and can still withstand the impact of the contactor action well, thereby achieving stable operation of the contactor.

[0023] See also Figures 1 to 3 , in this embodiment, the sliding rail 7 and the mounting base 2 are designed to be bent and formed as an integral body; the sliding rail 7 is configured as a rectangular rail with an opening toward one side of the base 6; the sliding rails 7 are provided with two, which are respectively provided on opposite sides of the mounting base 2, and the cylindrical protrusions 8 are provided with four, and each two cylindrical protrusions 8 form a group, and are respectively provided at the end and tail of the side of the base 6, corresponding to the two ends of the sliding rail 7 respectively; the mounting base 2 is provided with a mounting hole 9, and the base 1 is provided with a threaded hole 10 corresponding to the mounting hole 9, and the mounting base 2 is detachably connected to the base 1 by providing a screw passing through the mounting hole 9 and the thread is provided in the threaded hole 10. The detachable split structure of the mounting base 2 and the base 1 configured in this way is convenient for optimizing the material of the mounting base 2 separately, while the base 1 only needs to adopt The conventional base 1 material can save costs on the one hand, and on the other hand, it is convenient to quickly replace the mounting base plate 2 when fatigue damage occurs to the mounting base plate 2 during long-term use, which is more convenient; the coil skeleton 3 includes an iron core 11 and a compression sleeve 12, the compression sleeve 12 is sleeved on the outer periphery of the iron core 11, and the compression sleeve 12 is extended toward the drawer seat 4 to provide a connecting clip 13, and a connecting hole 14 is provided on the base 6 at a position corresponding to the connecting clip 13, the connecting clip 13 passes through the drawer seat 4 and the connecting hole 14 and is clamped with the connecting hole 14; the connecting clip 13 and the compression sleeve 12 are integrally designed, and the extended connecting clip 13 has deformation ability. When the connecting clip 13 is installed and connected, a certain force is required to cause the connecting clip 13 to produce a certain deformation, and then inserted into the connecting hole 14.

[0024] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A drawer-type coil device for a contactor, comprising: A base (1), a mounting base (2), a coil skeleton (3) and a drawer seat (4), wherein the mounting base (2) is detachably mounted on the base (1), the drawer seat (4) is movably arranged on the mounting base (2), and the coil skeleton (3) is arranged on the drawer seat (4), characterized in that: the drawer seat (4) includes a box body (5) and a base (6), a sliding track (7) is arranged on the mounting base (2), and cylindrical protrusions (8) are arranged on both sides of the base (6) corresponding to the sliding track (7), and the cylindrical protrusions (8) are slidably arranged in the sliding track (7) along the extension direction of the sliding track (7).

2. A drawer-type coil device for a contactor according to claim 1, characterized in that The sliding rail (7) and the mounting base plate (2) are designed to be bent and formed into an integral body.

3. A drawer-type coil device for a contactor according to claim 1, characterized in that The sliding track (7) is configured as a rectangular track with an opening toward one side of the base (6).

4. A drawer-type coil device for a contactor according to claim 1, characterized in that The number of the sliding rails (7) is two, and they are respectively arranged on two opposite sides of the mounting base plate (2); the number of the cylindrical protrusions (8) is four, and each two cylindrical protrusions (8) form a group, and are respectively arranged at the end and the tail of the side of the base (6), corresponding to the two ends of the sliding rails (7).

5. The drawer-type coil device for a contactor according to claim 1, characterized in that The mounting base plate (2) is provided with a mounting hole (9), the base (1) is provided with a threaded hole (10) corresponding to the mounting hole (9), and the mounting base plate (2) is detachably connected to the base (1) by providing a screw passing through the mounting hole (9) and having a thread provided in the threaded hole (10).

6. A drawer-type coil device for a contactor according to claim 1, characterized in that The coil skeleton (3) comprises an iron core (11) and a compression sleeve (12), wherein the compression sleeve (12) is sleeved on the outer periphery of the iron core (11), and the compression sleeve (12) is provided with a connecting buckle (13) extending toward the drawer seat (4), and a connecting hole (14) is provided on the base (6) at a position corresponding to the connecting buckle (13), and the connecting buckle (13) passes through the drawer seat (4) and the connecting hole (14) and is engaged with the connecting hole (14).

7. A drawer-type coil device for a contactor according to claim 6, characterized in that The connecting buckle (13) and the compression sleeve (12) are designed as an integral unit, and the extending connecting buckle (13) has deformation capability.

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