Drawer type coil device for large-current contactor

Abstract

The utility model discloses a drawer type coil device for a heavy current contactor, which comprises a base, a coil framework and a drawer seat, the drawer seat is movably arranged on the base, the coil framework is arranged on the drawer seat, the drawer type coil device further comprises a mounting bottom plate, the mounting bottom plate is mounted on the base, and the coil framework is arranged on the mounting bottom plate. The base is provided with a mounting bottom plate, the mounting bottom plate is provided with a limiting device which is in sliding connection with the drawer seat, the mounting bottom plate is provided with a connecting device which is connected with the coil framework, the base is provided with the high-strength mounting bottom plate, and the drawer seat and the coil framework are both connected with the mounting bottom plate; the impact force of the action of the contactor is transferred to the mounting bottom plate, so that the adaptability to extreme temperature and the resistance to strong impact in the action process of the contactor are greatly improved.

Description

Technical Field

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

[0002] A contactor is a widely used switching electrical appliance that uses electromagnetic, pneumatic or hydraulic principles to control the on-off of the main circuit through a control circuit. The coil inside it generates magnetic force when energized. During use, the coil is prone to burnout, mainly due to reasons such as too high power supply voltage, overcurrent or overload, long-term operation, and damaged coil insulation. When a failure caused by the above reasons occurs, repair is required.

[0003] In the prior art, as mentioned in the invention patent with the application number CN201811453401.7, by movably arranging a drawer seat and integrally arranging a sliding track on the base that is adapted to the drawer seat on the base, the pulling and pushing movement of the drawer seat is realized, and the basic function of facilitating separate maintenance of the coil without overall disassembly and assembly is achieved. However, it is found in actual use that when this structural design is used in a circuit with a relatively high voltage and strong current, due to the relatively large action force of the contactor, parts such as the track and limit device for the installation and guidance of the drawer seat on the base are very prone to fracture or deformation. At the same time, due to the necessary requirement of base insulation, the material of the base usually uses insulating materials such as plastics, and its adaptability to extreme environments is low, and it is also prone to deformation or fracture. Therefore, there is a certain room for improvement. Summary of the Invention

[0004] In view of the above problems, this application proposes a drawer-type coil device for high-current contactors. By installing a high-strength installation base plate on the base, and connecting both the drawer seat and the coil skeleton to the installation base plate, the impact force of the contactor action is transferred to the installation base plate, greatly improving the adaptability of the contactor to extreme temperatures and the resistance to strong impacts during the action process. The drawer-type coil device for high-current contactors is specifically realized through the following technical solutions:

[0005] A drawer-type coil device for high-current contactors, comprising: a base, a coil skeleton, and a drawer seat. The drawer seat is movably arranged on the base, the coil skeleton is arranged on the drawer seat, and further includes an installation base plate. The installation base plate is installed on the base. A limit device that forms a sliding connection with the drawer seat is arranged on the installation base plate, and a connection device that forms a connection with the coil skeleton is arranged on the installation base plate.

[0006] Further setting: mounting holes are provided on the mounting base plate, threaded holes are correspondingly provided on the base for the mounting holes, and the mounting base plate is detachably connected to the base by means of screws passing through the mounting holes and being threadedly arranged in the threaded holes. With this setting, the mounting base plate is convenient to install and can be detachably replaced, improving the efficiency during the production process.

[0007] Further setting: the mounting base plate is provided as an integrally formed part. With this setting, the overall strength of the mounting base plate is improved.

[0008] Further setting: the limiting device includes a sliding groove integrally provided on the mounting base plate. The sliding groove is bent towards the direction close to the drawer seat. The drawer seat includes a box body and a bottom plate. The box body is in transmission connection with the bottom plate. A sliding block is correspondingly provided on the bottom plate for the sliding groove. The sliding block is arranged in the sliding groove and slides along the extending direction of the sliding groove. With this setting, the drawer seat and the mounting base plate form a sliding with a certain limit, realizing the function of the drawer seat being pulled out and pushed in.

[0009] Further setting: the coil bobbin includes an iron core and a pressing sleeve. The pressing sleeve is sleeved on the outer periphery of the iron core, and a connecting buckle is extended towards the drawer seat direction on the pressing sleeve. The connecting device includes a connecting hole provided corresponding to the position of the connecting block. The connecting buckle passes through the drawer seat and the connecting hole and is snap-connected with the connecting hole. With this setting, the coil bobbin, the drawer seat and the mounting base plate are mutually pressed and limited, making the overall structure stable and compact.

[0010] Further setting: the connecting buckle and the pressing sleeve are of an integrated design, and the extended connecting buckle has a certain deformation ability. With this setting, the strength of the connecting buckle is improved, and it is convenient to extend into the connecting hole during installation, facilitating the installation.

[0011] Further setting: a hook-shaped limiting part is provided at the end of the connecting buckle. With this setting, the limiting effect of the connecting buckle is more stable and will not be accidentally loosened due to vibration.

[0012] In summary, for the drawer-type coil device of a high-current contactor, by installing a high-strength mounting base plate on the base, and connecting both the drawer seat and the coil bobbin to the mounting base plate, the impact force during the contactor operation is transferred to the mounting base plate, greatly improving the adaptability of the contactor to extreme temperatures and the resistance to strong impacts during the operation process. Description of the Drawings

[0013] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the accompanying drawings required for describing the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 Explosion structure diagram of the drawer-type coil device for a high-current contactor provided by an embodiment of the present application;

[0015] Figure 2 Structural diagram of the compression sleeve of the drawer-type coil device for a high-current contactor provided by an embodiment of the present application;

[0016] Figure 3 Top view of the mounting base plate of the drawer-type coil device for a high-current contactor provided by an embodiment of the present application;

[0017] Figure 4 Top view of the base of the drawer-type coil device for a high-current contactor provided by an embodiment of the present application.

[0018] Among them, the reference numerals in the figures:

[0019] 1. Base; 2. Coil skeleton; 3. Drawer seat; 4. Mounting base plate; 5. Limiting device; 6. Connecting device; 7. Mounting hole; 8. Threaded hole; 10. Sliding groove; 11. Box body; 12. Base plate; 13. Sliding block; 14. Iron core; 15. Compression sleeve; 16. Connecting buckle; 17. Connecting hole; 18. Hook-shaped limiting part. Specific embodiments

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the following further details the present application in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0021] The appearance of the above-mentioned words at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0022] Now, the present application is further described in conjunction with the accompanying drawings and specific embodiments:

[0023] Please refer to Figures 1 to 4, a drawer-type coil device for a high-current contactor, comprising: a base 1, a coil bobbin 2 and a drawer base 3. The drawer base 3 is movably arranged on the base 1, and the coil bobbin 2 is arranged on the drawer base 3. It further includes a mounting bottom plate 124, the mounting bottom plate 124 is mounted on the base 1, and a limiting device 5 that forms a sliding connection with the drawer base 3 is arranged on the mounting bottom plate 124, and a connecting device 6 that forms a connection with the coil bobbin 2 is arranged on the mounting bottom plate 124.

[0024] Please refer to Figures 1 to 4 , in this embodiment, mounting holes 7 are arranged on the mounting bottom plate 124, threaded holes 8 are arranged on the base 1 corresponding to the mounting holes 7, and the mounting bottom plate 124 is detachably connected to the base 1 by means of screws passing through the mounting holes 7 and being threadedly arranged in the threaded holes 8. The base 1 is provided with a limiting groove for the mounting bottom plate 124 to be embedded at the position corresponding to the mounting bottom plate 124. During the installation process of the mounting bottom plate 124, it is relatively convenient to position the mounting holes 7 and the threaded holes 8, facilitating the installation; the mounting bottom plate 124 is set as an integrally formed part. It should be noted that in order to meet the condition that the contactor has a large impact force during operation under high current and high voltage, the strength requirement of the mounting bottom plate 124 is extremely high. Therefore, the mounting bottom plate 124 is made of a metal material in this embodiment, which has good structural rigidity and can well withstand the impact force of the contactor operation. In addition, the metal material also needs to meet extreme temperature conditions such as low temperature or high temperature. Therefore, if other materials that meet the conditions are used, it will be more convenient, but as long as the material of the mounting bottom plate 124 is separately set from that of the base 1, it falls within the protection scope; the limiting device 5 includes a sliding groove 10 integrally arranged on the mounting bottom plate 124. The sliding groove 10 is bent towards the direction close to the drawer base 3. The drawer base 3 includes a box body 11 and a bottom plate 12. The box body 11 is in transmission connection with the bottom plate 12. A sliding block 13 is arranged on the bottom plate 12 corresponding to the sliding groove 10. The sliding block 13 is arranged in the sliding groove 10 and slides along the extending direction of the sliding groove 10; the coil bobbin 2 includes an iron core 14 and a pressing sleeve 15. The pressing sleeve 15 is sleeved on the outer periphery of the iron core 14, and a connecting buckle 16 is arranged on the pressing sleeve 15 extending towards the drawer base 3. The connecting device 6 includes a connecting hole 17 arranged corresponding to the position of the connecting block. The connecting buckle 16 passes through the drawer base 3 and the connecting hole 17 and is clamped with the connecting hole 17. The coil bobbin 2 is directly connected to the drawer base 3 and the mounting bottom plate 124 through such a setting, and the connection is more stable and the installation is more convenient; the connecting buckle 16 and the pressing sleeve 15 are of an integrated design, and the extended connecting buckle 16 has a certain deformation ability; a hook-shaped limiting portion 18 is arranged at the end of the connecting buckle 16.

[0025] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A drawer-type coil device for a high-current contactor, comprising: A base (1), a coil bobbin (2) and a drawer base (3), the drawer base (3) is movably arranged on the base (1), the coil bobbin (2) is arranged on the drawer base (3), and it is characterized in that: it further includes a mounting bottom plate (4), the mounting bottom plate (4) is mounted on the base (1), a limiting device (5) which is slidably connected with the drawer base (3) is arranged on the mounting bottom plate (4), and a connecting device (6) which is connected with the coil bobbin (2) is arranged on the mounting bottom plate (4).

2. The drawer-type coil device for a high-current contactor according to claim 1, characterized in that : Mounting holes (7) are arranged on the mounting bottom plate (4), threaded holes (8) are arranged on the base (1) corresponding to the mounting holes (7), and the mounting bottom plate (4) is detachably connected with the base (1) by means of screws passing through the mounting holes (7) and being threadedly arranged in the threaded holes (8).

3. The drawer-type coil device for a high-current contactor according to claim 1, characterized in that : The mounting bottom plate (4) is provided as an integrally formed part.

4. A drawer-type coil device for a high-current contactor according to claim 1, characterized in that : The limiting device (5) includes a sliding groove (10) integrally arranged on the mounting bottom plate (4), the sliding groove (10) is bent towards the direction close to the drawer base (3), the drawer base (3) includes a box body (11) and a bottom plate (12), the box body (11) is in transmission connection with the bottom plate (12), a sliding block (13) is arranged on the bottom plate (12) corresponding to the sliding groove (10), and the sliding block (13) is arranged in the sliding groove (10) and slides along the extending direction of the sliding groove (10).

5. The drawer-type coil device for a high-current contactor according to claim 1, characterized in that : The coil bobbin (2) includes an iron core (14) and a pressing sleeve (15), the pressing sleeve (15) is sleeved on the outer periphery of the iron core (14), and a connecting buckle (16) is arranged on the pressing sleeve (15) extending towards the drawer base (3), the connecting device (6) includes a connecting hole (17) arranged corresponding to the position of the connecting block, and the connecting buckle (16) penetrates through the drawer base (3) and the connecting hole (17) and is clamped with the connecting hole (17).

6. The drawer-type coil device for a high-current contactor according to claim 5, characterized in that : The connecting buckle (16) and the pressing sleeve (15) are of an integrated design, and the extended connecting buckle (16) has a certain deformation ability.

7. A drawer-type coil device for a high-current contactor according to claim 5, characterized in that : A hook-shaped limiting part (18) is arranged at the end of the connecting buckle (16).

Images