A contactor with a dustproof shell

Abstract

The application relates to the technical field of contactors, and discloses a contactor with a dustproof shell, which comprises a shell, a contact support frame is slidably connected in the shell, a base is arranged on the shell, a through hole is arranged on the base, a dustproof shell is arranged on the base, and a placing groove is arranged on the dustproof shell. The dustproof shell can prevent external impurities from entering the contactor, the possibility of impurities affecting the operation of the contactor is reduced, the safe use performance of the equipment is improved, the dustproof capacity of the contactor is improved, the occurrence of the fault of the contactor is reduced, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of contactors, and in particular to a contactor with a dustproof housing. Background Technology

[0002] A contactor is an electrical switching device used to control the opening and closing of circuits. It is widely used in industrial automation, power systems and motor control. Its main function is to use the magnetic field generated by the energized coil to attract the iron core, which in turn drives the contact support frame and the moving contact to move. Finally, the circuit is connected by the contact between the moving contact and the stationary contact.

[0003] In related technologies, the contactor includes a housing, an iron core slidably connected inside the housing, the iron core being used to drive the contact support frame and the moving contact to move, a base being provided on the housing, and a through hole being provided on the base for the contact support frame to pass through, the through hole being used for heat dissipation of the contact support frame.

[0004] Because the contactor generates heat during operation, the base has through holes for heat dissipation. When the iron core moves the contact support frame and the moving contact, the through holes are exposed to the air, making it easy for dust or impurities to enter the contactor housing through the through holes. This makes the contactor susceptible to interference from impurities during operation and reduces the safe operation of the equipment. Utility Model Content

[0005] To improve the dustproof capability of contactors, this application provides a contactor with a dustproof housing.

[0006] This application provides a contactor with a dustproof housing, which adopts the following technical solution:

[0007] A contactor with a dustproof shell includes a housing, a contact support frame slidably connected inside the housing, a base on the housing, a through hole on the base for the contact support frame to pass through, the through hole for heat dissipation of the contact support frame, a dustproof shell on the base, and a placement groove on the dustproof shell for the contact support frame to be inserted into; when the dustproof shell is installed on the base, the dustproof shell blocks the through hole.

[0008] By adopting the above technical solution, a dustproof shell is provided on the base, which can prevent external impurities from entering the contactor, reduce the possibility of impurities affecting the operation of the contactor, improve the safe use performance of the equipment, thereby improving the dustproof capability of the contactor, reducing the occurrence of contactor failures, and extending the service life of the equipment.

[0009] Optionally, the wall of the placement groove is provided with a limiting strip, the base is provided with a limiting block, and the limiting block is provided with a limiting groove for the limiting strip to be inserted; when the limiting strip is inserted into the limiting groove, the dust cover seals the through hole.

[0010] By adopting the above technical solution, when the limiting strip is inserted into the limiting groove, the groove wall of the limiting groove can restrict the dust cover from continuing to move, so that the dust cover can be located in the position of blocking the through hole, thereby preventing external impurities from entering the contactor.

[0011] Optionally, a first inclined surface is provided on the groove wall away from the base of the limiting groove. The distance from the first inclined surface to the base gradually decreases along the direction in which the limiting strip is inserted into the limiting groove. The first inclined surface is used to guide the limiting strip into the limiting groove.

[0012] By adopting the above technical solution, the distance from the first inclined surface to the base gradually decreases along the direction in which the limiting strip is inserted into the limiting groove. The limiting strip can be inserted into the limiting groove along the inclined direction of the first inclined surface. The first inclined surface can play a guiding role, providing convenience for workers to insert the limiting strip on the dust cover into the limiting groove.

[0013] Optionally, the dust cover is provided with an elastic protrusion that protrudes towards the base, and the base is provided with a groove for the protrusion to be inserted; when the limiting strip is inserted into the limiting groove, the protrusion abuts against the groove wall, and the limiting block abuts against the groove wall of the placement groove.

[0014] By adopting the above technical solution, when the limiting strip is inserted into the limiting groove, the protrusion abuts against the groove wall, and the limiting block abuts against the groove wall, so that the groove wall can restrict the dust cover from moving away from the through hole, and the limiting block can restrict the dust cover from moving closer to the through hole, thereby reducing the possibility of the dust cover moving in the horizontal direction, allowing the dust cover to be fixed on the base and more reliably play the role of dust prevention.

[0015] Optionally, the protrusion is provided with a second inclined surface, and the distance from the second inclined surface to the base gradually increases along the direction in which the limiting strip is inserted into the limiting groove. The second inclined surface is used to guide the protrusion into the groove.

[0016] By adopting the above technical solution, when the dust cover is installed on the base, the distance from the second inclined surface to the base gradually increases along the direction of the insertion of the limiting strip into the limiting groove, so that the second inclined surface first abuts against the groove wall, and the protrusion can recover its deformation along the inclined direction of the second inclined surface, and the second inclined surface better guides the protrusion into the groove.

[0017] Optionally, the base is provided with a fixing block, the fixing block is provided with a fixing strip, and the groove wall of the placement groove is provided with a fixing groove for the fixing strip to be inserted. The fixing groove is connected to the placement groove. When the dust cover is installed on the base, the fixing strip is inserted into the fixing groove, and the dust cover is fixed on the base.

[0018] By adopting the above technical solution, when the dust cover is installed on the base, the fixing strip inserted into the fixing groove can restrict the movement of the dust cover in the vertical direction, so that the dust cover is more securely fixed on the base, thereby reducing the possibility of the dust cover detaching from the base and further preventing dust or other impurities from entering the contactor.

[0019] Optionally, a positioning block is slidably connected to the dust cover, and a positioning groove is provided on the base for the positioning block to be inserted; when the dust cover is installed on the base, the positioning block can be inserted into the positioning groove, and the dust cover and the base are fixed.

[0020] By adopting the above technical solution, when the dust cover is installed on the base, the positioning block is inserted into the positioning groove to fix the dust cover and the base. Compared with the elastic protrusion, the sliding positioning block structure is more stable, avoiding the disadvantage of the protrusion being prone to deformation, and making the fixation between the dust cover and the base more reliable.

[0021] Optionally, a spring block is provided on the wall of the positioning groove, and the spring block is located on the moving path of the positioning block being inserted into the positioning groove; when the positioning block is inserted into the positioning groove, the spring block deforms.

[0022] By adopting the above technical solution, when the positioning block is inserted into the positioning groove, the spring block deforms, allowing the spring block to apply force to the positioning block, thereby making the positioning block more securely fixed in the positioning groove and reducing the possibility of the fixing shell detaching from the base.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By installing a dustproof shell on the base, the dustproof shell can prevent external impurities from entering the contactor, reducing the possibility of impurities affecting the operation of the contactor, improving the safe use performance of the equipment, thereby improving the dustproof capability of the contactor, reducing the occurrence of contactor failures, and extending the service life of the equipment.

[0025] 2. When the limit strip is inserted into the limit groove, the groove wall can restrict the dust cover from moving further, so that the dust cover can be positioned to block the through hole, thereby preventing external impurities from entering the contactor. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of Example 1;

[0027] Figure 2 This is a partial structural diagram highlighting the through hole in Example 1;

[0028] Figure 3 This is a partial structural diagram highlighting the dustproof shell in Example 1;

[0029] Figure 4 This is a partial structural diagram highlighting the base in Embodiment 1;

[0030] Figure 5 This is a structural schematic diagram of Example 2;

[0031] Figure 6 This is a partial structural diagram highlighting the positioning groove in Embodiment 2.

[0032] Reference numerals: 1. Housing; 11. Contact support frame; 2. Base; 21. Through hole; 22. Limiting block; 221. Limiting groove; 222. First inclined surface; 23. Groove; 24. Fixing block; 241. Fixing strip; 25. Positioning groove; 251. Spring block; 3. Dustproof shell; 31. Placement groove; 311. Fixing groove; 32. Limiting strip; 33. Protrusion; 331. Second inclined surface; 34. Positioning block. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0034] Example 1

[0035] This embodiment discloses a contactor with a dustproof housing. (Refer to...) Figure 1 and Figure 2 A contactor with a dustproof shell includes a housing 1, a contact support frame 11 slidably connected inside the housing 1, and a base 2 fixedly connected to the outer surface of the housing 1. A through hole 21 is opened on the surface of the base 2 away from the ground for the contact support frame 11 to pass through. The through hole 21 is located in the middle of the base 2 and is used for heat dissipation of the contact support frame 11.

[0036] Reference Figure 2 and Figure 3 A dust cover 3 is detachably connected to the outer surface of the base 2 away from the housing 1. The surface of the dust cover 3 near the base 2 has a placement groove 31 for inserting the contact support bracket 11. The placement groove 31 extends along the installation path of the dust cover 3. When the dust cover 3 is installed on the base 2, the dust cover 3 can block the through hole 21 and prevent dust from entering the contactor through the through hole 21.

[0037] Reference Figure 3 and Figure 4 Limiting strips 32 are fixedly connected to the walls of the placement groove 31 on both sides, and the limiting strips 32 extend along the length of the placement groove 31. When the dust cover 3 is installed on the base 2, the limiting strips 32 abut against the base 2. Limiting blocks 22 are fixedly connected to the surface of the base 2 away from the ground. There are two limiting blocks 22, which are symmetrically arranged along the center line of the base 2.

[0038] Reference Figure 3 and Figure 4 Each of the two limiting blocks 22 has a limiting groove 221 on its surface away from the through hole 21. The two limiting grooves 221 are for inserting different limiting strips 32, and the limiting grooves 221 extend in a direction away from the other limiting groove 221. A first inclined surface 222 is formed on the groove wall of the limiting groove 221 away from the base 2. The distance from the first inclined surface 222 to the base 2 gradually decreases along the direction in which the limiting strip 32 is inserted into the limiting groove 221. The first inclined surface 222 guides the limiting strip 32 into the limiting groove 221. When the limiting strip 32 is inserted into the limiting groove 221 and abuts against the groove wall away from the through direction, the dust cover 3 blocks the through hole 21, and the groove wall away from the through direction restricts the dust cover 3 from further movement.

[0039] Reference Figure 2 and Figure 3 A flexible protrusion 33 is fixedly connected to the groove wall of the placement groove 31 away from the through direction. The protrusion 33 protrudes towards the base and is located between two limiting strips 32. A second inclined surface 331 is formed on the surface of the protrusion 33 near the base. The distance from the second inclined surface 331 to the base gradually increases along the direction in which the limiting strip 32 is inserted into the limiting groove 221. A groove 23 for the protrusion 33 to be inserted is formed on the surface of the base 2 away from the ground. The groove 23 is located between two limiting blocks 22.

[0040] Reference Figure 3 and Figure 4 When the worker installs the dust cover 3 on the base 2, the worker slides the dust cover 3 on the base 2, so that the limiting strip 32 is inserted into the corresponding limiting groove 221, and the protrusion 33 is inserted into the groove 23 along the inclined direction of the second inclined surface 331. At this time, the protrusion 33 abuts against the groove wall of the groove 23 away from the through hole 21, and the surface of the limiting block 22 away from the through hole 21 abuts against the groove wall of the placement groove 31, so that the dust cover 3 is fixed on the base 2.

[0041] Reference Figure 3 and Figure 4 A fixing block 24 is fixedly connected to the surface of the base 2 away from the ground, and the fixing block 24 extends along the width direction of the placement groove 31. Fixing strips 241 are integrally formed on opposite sides of the fixing block 24 along its width direction. Fixing grooves 311 are formed on the groove walls on opposite sides of the placement groove 31 for inserting the corresponding fixing strips 241, and the fixing grooves 311 are connected to the placement groove 31. When the dust cover 3 is installed on the base 2, the fixing strips 241 are inserted into the fixing grooves 311, and the dust cover 3 and the base 2 are fixed together.

[0042] The implementation principle of Example 1 is as follows: The worker slides the dust cover 3 and inserts the limiting strip 32 into the corresponding limiting groove 221. The protrusion 33 is inserted into the groove 23 along the second inclined surface 331. At the same time, the fixing strip 241 is inserted into the corresponding fixing groove 311. At this time, the protrusion 33 abuts against the groove wall of the groove 23 away from the through hole 21, and the surface of the limiting block 22 away from the through hole 21 abuts against the groove wall of the placement groove 31. The dust cover 3 blocks the through hole 21, and the dust cover 3 and the base 2 are mutually fixed.

[0043] Example 2

[0044] Reference Figure 5 and Figure 6 The difference between this embodiment and Embodiment 1 is that a positioning block 34 is slidably connected to the outer surface of the dust cover 3, and the positioning block 34 extends along the direction of the dust cover 3 towards the base 2. A positioning groove 25 is formed on the surface of the base 2 away from the ground for the positioning block 34 to be inserted. A spring block 251 is fixedly connected to the groove wall of the positioning groove 25, and the spring block 251 is located on the moving path of the positioning block 34 to be inserted into the positioning groove 25. When the dust cover 3 is installed on the base 2, the operator slides the positioning block 34 into the positioning groove 25, at which time the spring block 251 deforms, and the dust cover 3 and the base 2 are fixed.

[0045] The implementation principle of Example 2 is as follows: After the staff installs the dust cover 3 on the base 2, the limiting strip 32 is inserted into the limiting groove 221 and the fixing strip 241 is inserted into the fixing groove 311. The staff slides the positioning block 34 so that the positioning block 34 is inserted into the positioning groove 25 to fix the dust cover 3 and the base 2 in the horizontal direction.

[0046] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0047] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.

Claims

1. A contactor with a dustproof shell, comprising a shell (1), wherein a contact support frame (11) is slidably connected inside the shell (1), and a base (2) is provided on the shell (1), wherein a through hole (21) is provided on the base (2) for the contact support frame (11) to pass through, the through hole (21) being used for heat dissipation of the contact support frame (11), characterized in that: The base (2) is provided with a dust cover (3), and the dust cover (3) is provided with a placement groove (31) for inserting the contact support frame (11); when the dust cover (3) is installed on the base (2), the dust cover (3) blocks the through hole (21).

2. The contactor with a dustproof housing according to claim 1, characterized in that: The placement groove (31) has a limiting strip (32) on its wall and a limiting block (22) on its base (2). The limiting block (22) has a limiting groove (221) for the limiting strip (32) to be inserted. When the limiting strip (32) is inserted into the limiting groove (221), the dust cover (3) blocks the through hole (21).

3. A contactor with a dustproof housing according to claim 2, characterized in that: The limiting groove (221) has a first inclined surface (222) on the groove wall away from the base (2). The distance from the first inclined surface (222) to the base (2) gradually decreases along the direction in which the limiting strip (32) is inserted into the limiting groove (221). The first inclined surface (222) is used to guide the limiting strip (32) into the limiting groove (221).

4. A contactor with a dustproof housing according to claim 2, characterized in that: The dust cover (3) is provided with an elastic protrusion (33), which protrudes towards the base. The base (2) is provided with a groove (23) for the protrusion (33) to be inserted. When the limiting strip (32) is inserted into the limiting groove (221), the protrusion (33) abuts against the groove wall of the groove (23), and the limiting block (22) abuts against the groove wall of the placement groove (31).

5. A contactor with a dustproof housing according to claim 4, characterized in that: The protrusion (33) has a second inclined surface (331). The distance from the second inclined surface (331) to the base gradually increases along the direction of the insertion of the limiting strip (32) into the limiting groove (221). The second inclined surface (331) is used to guide the protrusion (33) into the groove (23).

6. A contactor with a dustproof housing according to claim 1, characterized in that: The base (2) is provided with a fixing block (24), the fixing block (24) is provided with a fixing strip (241), and the groove wall of the placement groove (31) is provided with a fixing groove (311) for the fixing strip (241) to be inserted. The fixing groove (311) is connected to the placement groove (31). When the dust cover (3) is installed on the base (2), the fixing strip (241) is inserted into the fixing groove (311), and the dust cover (3) is fixed on the base (2).

7. A contactor with a dustproof housing according to claim 1, characterized in that: A positioning block (34) is slidably connected to the dust cover (3), and a positioning groove (25) is provided on the base (2) for the positioning block (34) to be inserted. When the dust cover (3) is installed on the base (2), the positioning block (34) can be inserted into the positioning groove (25), and the dust cover (3) and the base (2) are fixed.

8. A contactor with a dustproof housing according to claim 7, characterized in that: The positioning groove (25) has a spring block (251) on its groove wall. The spring block (251) is located on the moving path of the positioning block (34) inserted into the positioning groove (25). When the positioning block (34) is inserted into the positioning groove (25), the spring block (251) deforms.

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