Dustproof cover and contactor

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a dustproof cover and a contactor. The dustproof cover is arranged on the base, a mounting cavity and a mounting hole which are communicated with each other are formed in the base, and the mounting hole is used for allowing a contact on the inner side of the base to penetrate into the mounting cavity; the dustproof cover comprises a cover plate, a first baffle and a second baffle, one end of the first baffle is connected with the cover plate, when the cover plate covers the base, the other end of the first baffle can be inserted into the mounting cavity and abuts against the contact to shield the mounting hole, and an arc spraying opening is formed in the first baffle; one end of the second baffle is connected with the cover plate, the second baffle and the first baffle are arranged in a spaced mode and arranged on the inner side of the first baffle, and the other end of the second baffle shields the arc spraying opening. According to the dustproof cover, the arc spraying opening used for arc spraying and heat dissipation is formed in the first baffle, meanwhile, the second baffle used for shielding the arc spraying opening is additionally arranged on the inner side of the first baffle, and it is guaranteed that the dustproof cover has good heat dissipation and dustproof effects.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a dust cover and a contactor. Background Art

[0002] In a contactor, a connected mounting cavity and mounting hole are usually provided on the base. The mounting hole is located on one side of the mounting cavity. The mounting hole is used to allow the contact inside the base to extend into the mounting cavity so that the contact part located in the mounting cavity outside the base can be connected to the external device. That is, part of the contact is located on the inside of the base, and the other part of the contact is located in the mounting cavity outside the base.

[0003] However, since the operating environment of the contactor is generally harsh, during the use of the contactor, dust and other impurities in the external environment may enter the inside of the base through the mounting holes, causing the entire contactor to generate noise and other problems, thereby reducing the service life of the contactor.

[0004] In order to solve the above problems, a dust cover is usually provided on the base, and the dust cover includes a cover plate and a baffle connected to each other. When the cover plate is installed on the base, the baffle can be directly inserted into the installation cavity to cover the installation hole and prevent dust and other impurities from entering the inside of the base through the installation hole.

[0005] However, since the entire mounting hole is blocked by the baffle, the arc and heat inside the base cannot be dissipated in time, affecting the performance of the entire contactor.

[0006] Therefore, there is an urgent need for a dust cover and a contactor to solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to provide a dust cover and a contactor, which can prevent impurities such as dust in the external environment from entering the inner side of the base through the arc spray port, so that the dust cover has a better dustproof effect, can increase the service life of the contactor, and at the same time can ensure that the dust cover has a better heat dissipation effect.

[0008] To achieve this purpose, the utility model adopts the following technical solutions:

[0009] A dust cover is provided on the base, wherein the base is provided with a connecting mounting cavity and a mounting hole, wherein the mounting hole is used for allowing the contact on the inner side of the base to pass through the mounting cavity, and the dust cover comprises:

[0010] Cover plate;

[0011] A first baffle, one end of which is connected to the cover plate. When the cover plate is mounted on the base, the other end of the first baffle can be inserted into the mounting cavity and abut against the contact to cover the mounting hole. The first baffle is provided with an arc spray port;

[0012] A second baffle plate has one end connected to the cover plate, the second baffle plate is spaced apart from the first baffle plate and is disposed on the inner side of the first baffle plate, and the other end of the second baffle plate blocks the arc spray port.

[0013] As an optional solution, when the bottom end of the first baffle abuts against the contact, the side edge of the first baffle can abut against the inner side wall of the installation cavity.

[0014] As an optional solution, a plurality of first baffles are spaced apart on two opposite sides of the cover plate, and a second baffle is correspondingly arranged at each first baffle.

[0015] As an optional solution, at least one second baffle is provided at each first baffle.

[0016] As an optional solution, the arc spray port is in a T-shape.

[0017] As an optional solution, the second baffle includes:

[0018] A U-shaped plate, one end of the U-shaped plate is connected to the cover plate, one side of the U-shaped plate is connected to the first baffle plate, and the U-shaped plate and the first baffle plate are arranged to form a cavity, and part of the arc spraying port is arranged corresponding to the cavity;

[0019] A straight plate, one end of which is connected to the other end of the U-shaped plate, and the straight plate covers the remaining part of the arc spraying port.

[0020] As an optional solution, the length of the second baffle is smaller than the length of the first baffle.

[0021] As an optional solution, the cover plate is provided with an opening, and a transparent plate is sealed at the opening.

[0022] As an optional solution, the dust cover is an integrally formed structure.

[0023] The contactor comprises a base and the dust cover as described above.

[0024] Beneficial effects:

[0025] The dust cover proposed by the utility model is provided with a connecting installation cavity and a installation hole on the base, and the installation hole is used for the contact on the inner side of the base to pass through the installation cavity, that is, a part of the contact is located on the inner side of the base, and the other part of the contact is located in the installation cavity on the outer side of the base, so as to facilitate wiring of the contact part in the installation cavity; by providing a first baffle on one side of the cover plate, when the cover plate is covered on the base, the first baffle can be directly inserted into the installation cavity and abut against the contact, so as to cover the installation hole through the first baffle; due to the blocking effect of the first baffle on the installation hole, the dust cover has a dustproof effect, can prevent dust and other impurities in the external environment from entering the inner side of the base through the installation hole, avoid noise and other problems of the entire contactor, and can improve the service life of the contactor.

[0026] At the same time, an arc spraying port is provided on the first baffle plate, and the arc spraying port is used to spray out the arc and heat generated on the inner side of the base to release the arc and heat on the inner side of the base, avoid overheating on the inner side of the base, and make the whole dust cover have better arc spraying and heat dissipation effect, so as to ensure the normal use of the whole contactor; and, by arranging a second baffle plate on the cover plate to cooperate with the arc spraying port on the first baffle plate, it is possible to ensure that the dust cover has a better dustproof effect while ensuring the arc spraying and heat dissipation effect of the dust cover, and ensure that very little dust and other impurities enter the inner side of the base.

[0027] The contactor proposed by the utility model, because it includes the above-mentioned dustproof cover with dustproof effect, can prevent dust and other impurities from entering the inner side of the base, ensure the normal performance of the components inside the base, thereby avoiding the noise and other problems caused by dust and other impurities entering the inner side of the base of the contactor, so that the service life of the whole contactor is longer, and at the same time can ensure a better heat dissipation effect of the whole contactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure in which the dust cover provided by the utility model is assembled on the base;

[0029] Figure 2 It is a schematic diagram of the exploded structure of the contactor provided by the utility model;

[0030] Figure 3 It is a schematic diagram of the structure of the dust cover provided by the utility model not being assembled on the base;

[0031] Figure 4 It is a structural schematic diagram of the base provided by the utility model;

[0032] Figure 5 yes Figure 4 A schematic diagram of the local enlarged structure at point A in the middle;

[0033] Figure 6 This is a schematic diagram of the structure of the dust cover provided by the utility model Figure 1 ;

[0034] Figure 7 This is a schematic diagram of the structure of the dust cover provided by the utility model Figure 2 .

[0035] In the figure:

[0036] 1. dust cover; 11. cover plate; 111. opening; 12. first baffle plate; 121. arc spraying port; 122. side; 13. second baffle plate; 131. U-shaped plate; 132. straight plate;

[0037] 2. base; 21. mounting cavity; 211. inner wall; 22. mounting hole;

[0038] 3. Contact; 4. Transparent plate. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] like Figures 1 to 5 As shown, in this embodiment, a dust cover 1 and a contactor including the dust cover 1 are proposed. The contactor also includes a base 2 and a contact 3. The dust cover 1 is arranged on the base 2. A connecting mounting cavity 21 and a mounting hole 22 are provided on the base 2. The mounting hole 22 is located on one side of the mounting cavity 21. The mounting hole 22 is used for allowing the contact 3 on the inner side of the base 2 to pass through the mounting cavity 21 to facilitate the installation of the contact 3 on the base 2. That is, the contact 3 located on the inner side of the base 2 can pass through the mounting hole 22 and then be located in the mounting cavity 21, that is, a part of the contact 3 is located on the inner side of the base 2, and the other part of the contact 3 is located in the mounting cavity 21 outside the base 2.

[0044] It is worth noting that the invention in this embodiment focuses on the improvement of the dust cover 1. The structure and working principle of the base 2, the contact 3 and other components in the contactor will not be described in detail here, and reference can be made to the contactor in the prior art.

[0045] Specifically, Figure 1 , Figure 6 and Figure 7 As shown, the dust cover 1 includes a cover plate 11 and a first baffle plate 12; one end of the first baffle plate 12 is connected to the cover plate 11, and when the cover plate 11 is placed on the base 2, the other end of the first baffle plate 12 can be inserted into the mounting cavity 21 and abut against the contact 3 to cover the mounting hole 22.

[0046] By setting a first baffle 12 on one side of the cover plate 11, when the cover plate 11 is placed on the base 2, the first baffle 12 can be directly inserted into the installation cavity 21 and abut against the contact 3, so that the installation hole 22 can be covered by the first baffle 12. Due to the blocking effect of the first baffle 12 on the installation hole 22, impurities such as dust in the external environment can be prevented from entering the inner side of the base 2 through the installation hole 22, so that the dust cover 1 has a dustproof effect, avoids the entire contactor from generating noise and other problems, and can increase the service life of the contactor.

[0047] It is worth noting that if Figure 1As shown, the inner side of the base 2 involved in the present embodiment specifically refers to the portion of the base 2 located on the inner side of the first baffle 12 away from the mounting cavity 21, and the outer side of the base 2 involved in the present embodiment specifically refers to the portion of the base 2 located on the outer side of the first baffle 12 close to the mounting cavity 21.

[0048] Since the contactor will generate a large amount of arc and heat inside the base 2 when working, currently, the generated arc and heat can be made to flow out through the mounting hole 22. However, since the mounting hole 22 has been blocked by the first baffle 12, the arc and heat inside the base 2 cannot be sprayed out well.

[0049] In order to solve the above problems, in this embodiment, Figures 1 to 3 , Figure 6 and Figure 7 As shown, an arc spraying port 121 is provided on the first baffle 12, and the arc spraying port 121 is used to spray out the arc and heat generated inside the base 2, so as to release the arc and heat inside the base 2 and avoid overheating inside the base 2, so that the entire dust cover 1 has better arc spraying and heat dissipation effects, thereby ensuring the normal use of the entire contactor.

[0050] Specifically, if Figure 6 and Figure 7 As shown, the arc ejection port 121 is in a T-shape. The T-shape structure can increase the difficulty of dust and other impurities in the external environment entering the inner side of the base 2 through the arc ejection port 121, thereby ensuring the dustproof effect of the dust cover 1; on the other hand, it will not affect the normal ejection of the arc and heat inside the base 2. Here, the specific shape of the arc ejection port 121 is not limited, and the shape of the arc ejection port 121 can also be set to be circular or square.

[0051] Furthermore, in order to further increase the difficulty of dust and other impurities in the external environment entering the inner side of the base 2 through the arc spray port 121, as Figure 6 and Figure 7 As shown, the dust cover 1 in this embodiment also includes a second baffle 13, which is connected to one side of the cover plate 11 on which the first baffle 12 is provided, and the second baffle 13 is located on the inner side of the base 2, that is, one end of the second baffle 13 is connected to the cover plate 11, and the second baffle 13 is spaced apart from the first baffle 12 and is located on the inner side of the first baffle 12, and the other end of the second baffle 13 blocks the arc outlet 121, so that dust impurities in the external environment cannot enter the inner side of the base 2 through the arc outlet 121, while the arc and heat inside the base 2 can flow out to the outside of the base 2 through the arc outlet 121.

[0052] Compared with the prior art, the dust cover 1 in this embodiment ensures that the dust cover 1 has a better heat dissipation effect by arranging an arc spraying port 121 for arc spraying and heat dissipation on the first baffle plate 12; at the same time, by arranging a second baffle plate 13 on the cover plate 11 for use in conjunction with the arc spraying port 121 on the first baffle plate 12, it is possible to ensure that the dust cover 1 has a better dustproof effect while ensuring the arc spraying and heat dissipation effects of the dust cover 1, and ensure that very little dust and other impurities enter the inner side of the base 2.

[0053] It is worth explaining that the above involves that when the second baffle 13 blocks the arc spray port 121, dust impurities in the external environment cannot enter the inner side of the base 2 through the arc spray port 121. Specifically, it means that dust impurities in the external environment cannot easily enter the inner side of the base 2 through the arc spray port 121. However, a very small amount of dust and other impurities will enter the inner side of the base 2 through the arc spray port 121.

[0054] Furthermore, if Figures 1 to 3 As shown, when the bottom end of the first baffle 12 abuts against the contact 3, the two side edges 122 of the first baffle 12 can respectively abut against the two inner walls 211 of the mounting cavity 21, so as to prevent impurities such as dust in the external environment from entering the mounting hole 22 through the gap between the side edges 122 of the first baffle 12 and the inner walls 211 of the mounting cavity 21, thereby ensuring that the first baffle 12 can completely cover the mounting hole 22, so that the dustproof effect of the entire dust cover 1 is better.

[0055] It is worth noting that if Figures 1 to 7 As shown, a plurality of contacts 3 are provided in the base 2, and correspondingly, a plurality of mounting cavities 21 and a plurality of mounting holes 22 are provided, therefore; a plurality of first baffles 12 and a plurality of second baffles 13 are spaced apart on opposite sides of the cover plate 11, and a second baffle 13 is provided at each first baffle 12; and, since the contacts 3 at different positions in the base 2 are at different heights in the base 2, the lengths of the first baffles 12 may be the same or different, and the specific length of the first baffle 12 needs to be determined according to the actual position of the contact 3 in the base 2, and is not limited here.

[0056] By setting the multiple first baffles 12 on the two opposite sides of the cover plate 11 at intervals, it is possible to avoid interference between the first baffles 12 and the components in the base 2 when the dust cover 1 is installed on the base 2, ensuring that the first baffle 12 can be smoothly inserted into the installation cavity 21. Among them, the first baffle 12 and the second baffle 13 on one side of the two opposite sides of the cover plate 11 are used to shield the incoming end of the contactor, and the first baffle 12 and the second baffle 13 on the other side are used to shield the outgoing end of the contactor. In this embodiment, there is no specific limitation on the number of first baffles 12 on the same side and the spacing between two adjacent first baffles 12 on the same side, which need to be determined according to actual working conditions.

[0057] Furthermore, at least one second baffle plate 13 is provided at each first baffle plate 12, and multiple second baffle plates 13 at each first baffle plate 12 are arranged at intervals on the inner side of the base 2, so that the arc spraying port 121 can be better shielded by the multiple second baffle plates 13, and the difficulty of dust and other impurities in the external environment entering the inner side of the base 2 through the arc spraying port 121 is further increased, thereby ensuring that the dustproof effect of the entire dust cover 1 is better, and at the same time, it will not affect the arc and heat inside the base 2 from being sprayed out through the arc spraying port 121. In this embodiment, Figure 6 and Figure 7 As shown, a second baffle 13 is provided at each first baffle 12. There is no limitation on the number of second baffles 13 provided at each first baffle 12, as long as it is ensured that when the first baffle 12 is inserted into the mounting cavity 21, the installation of the second baffle 13 on the inner side of the base 2 will not interfere with the base 2 and other components inside the base 2.

[0058] Specifically, Figure 6 and Figure 7 As shown, the second baffle 13 includes a U-shaped plate 131 and a straight plate 132; wherein, one end of the U-shaped plate 131 is connected to the cover plate 11, and one side of the U-shaped plate 131 is connected to the first baffle 12, so that a cavity is enclosed between the U-shaped plate 131 and the first baffle 12, and part of the arc outlet 121 is arranged corresponding to the cavity; one end of the straight plate 132 is connected to the other end of the U-shaped plate 131, and the straight plate 132 blocks the remaining part of the arc outlet 121, and the arc outlet 121 can be blocked by the cooperation of the U-shaped plate 131 and the straight plate 132.

[0059] Furthermore, if Figure 7 As shown, the length of the second baffle 13 is smaller than that of the first baffle 12, that is, the bottom end surface of the straight plate 132 is higher than the bottom end surface of the first baffle 12, so that there is a gap between the bottom end surfaces of the first baffle 12 and the second baffle 13, so that the bottom end surfaces of the first baffle 12 and the second baffle 13 are connected; at the same time, the above-mentioned cavity is formed between the U-shaped plate 131 and the first baffle 12, so that the arc and heat on the inner side of the base 2 can flow to the arc outlet 121 through the gap between the bottom end surfaces of the first baffle 12 and the second baffle 13, and the cavity formed between the U-shaped plate 131 and the first baffle 12, so that the arc and heat on the inner side of the base 2 can be ejected through the arc outlet 121, thereby ensuring the arc spraying and heat dissipation effect of the dust cover 1.

[0060] And, if Figure 7As shown, the bottom end surface of the straight plate 132 is lower than the bottom end of the arc outlet 121, so that the straight plate 132 and the U-shaped plate 131 can completely cover the arc outlet 121, ensuring that the second baffle 13 has a better shielding effect on the arc outlet 121, thereby better preventing dust and other impurities in the external environment from entering the inner side of the base 2 through the arc outlet 121, so that the dustproof effect of the entire dust cover 1 is better.

[0061] Furthermore, the dust cover 1 is an integrally formed structure, that is, the cover plate 11, the first baffle plate 12 and the second baffle plate 13 are integrally formed with each other, which can make the processing and assembly simpler and more convenient on the one hand, and can ensure the sealing and connection stability between the cover plate 11, the first baffle plate 12 and the second baffle plate 13, thereby ensuring the shielding effect of the first baffle plate 12 on the mounting hole 22 and the shielding effect of the second baffle plate 13 on the arc outlet 121.

[0062] At present, an opening 111 is usually provided on the cover plate 11, so that the contact 3 inside the base 2 can support the indicator rod to extend from the opening 111, so as to observe the working condition of the contact 3 inside the base 2; however, since impurities such as dust can easily enter the inside of the base 2 from this opening 111, the dust prevention effect is poor.

[0063] In order to solve the above problems, Figures 1 to 3 As shown, a transparent plate 4 is sealed at the opening 111 on the cover plate 11. On the one hand, the transparent plate 4 can seal the opening 111 on the cover plate 11 to prevent dust and other impurities from entering the inner side of the base 2 from the opening 111 on the cover plate 11, thereby ensuring a better dustproof effect of the entire dust cover 1; on the other hand, the contact 3 support indicator rod can be shortened and placed inside the base 2, so that the contact 3 support indicator rod can be directly observed through the transparent plate 4, thereby directly observing the working condition of the contact 3 inside the base 2. The specific material of the transparent plate 4 is not limited, as long as it can achieve the purpose of transparency and observation.

[0064] The dust cover 1 in this embodiment can cover the mounting hole 22 on the base 2 by setting the first baffle 12; and set the arc spraying port 121 for arc spraying and heat dissipation on the first baffle 12; and set the second baffle 13 used in conjunction with the first baffle 12, which can cover the arc spraying port 121 through the second baffle 13, so that dust impurities in the external environment cannot enter the inner side of the base 2 through the arc spraying port 121, and the arc and heat inside the base 2 can flow out to the outside of the base 2 through the arc spraying port 121; at the same time, the transparent plate 4 is sealed at the opening 111 of the cover plate 11, which can prevent dust and other impurities from entering the inner side of the base 2 through the opening 111; so that the dust cover 1 can have a good dustproof effect while having arc spraying and heat dissipation, ensuring the cleanliness of the inner side of the base 2 and the normal use function of the entire contactor. In this embodiment, the dustproof level of the dust cover 1 can reach IP50 by setting the dustproof level 1.

[0065] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A dust cover, arranged on a base (2), wherein the base (2) is provided with a mounting cavity (21) and a mounting hole (22) which are connected to each other, wherein the mounting hole (22) is used for allowing a contact (3) on the inner side of the base (2) to pass through the mounting cavity (21), characterized in that: The dust cover comprises: Cover plate (11); a first baffle (12), one end of which is connected to the cover plate (11); when the cover plate (11) is covered on the base (2), the other end of the first baffle (12) can be inserted into the mounting cavity (21) and abut against the contact (3) to cover the mounting hole (22); and an arc spraying port (121) is provided on the first baffle (12); A second baffle (13) has one end connected to the cover plate (11), the second baffle (13) is spaced apart from the first baffle (12) and is disposed on the inner side of the first baffle (12), and the other end of the second baffle (13) blocks the arc spray port (121).

2. The dust cover according to claim 1, characterized in that: When the bottom end of the first baffle (12) abuts against the contact (3), the side edge (122) of the first baffle (12) can abut against the inner side wall (211) of the installation cavity (21).

3. The dust cover according to claim 1, characterized in that: A plurality of first baffles (12) are arranged at intervals on opposite sides of the cover plate (11), and a second baffle (13) is correspondingly arranged at each first baffle (12).

4. The dust cover according to claim 3, characterized in that: At least one second baffle (13) is arranged at each of the first baffles (12).

5. The dust cover according to any one of claims 1 to 4, characterized in that: The arc spray port (121) is in a T-shape.

6. The dust cover according to any one of claims 1 to 4, characterized in that: The second baffle (13) comprises: A U-shaped plate (131), one end of the U-shaped plate (131) being connected to the cover plate (11), one side of the U-shaped plate (131) being connected to the first baffle plate (12), and the U-shaped plate (131) and the first baffle plate (12) are arranged to form a cavity, and part of the arc spraying port (121) is arranged corresponding to the cavity; A straight plate (132), one end of the straight plate (132) being connected to the other end of the U-shaped plate (131), and the straight plate (132) shielding the remaining portion of the arc spraying port (121).

7. The dust cover according to claim 1, characterized in that: The length of the second baffle (13) is shorter than the length of the first baffle (12).

8. The dust cover according to any one of claims 1 to 4, characterized in that: The cover plate (11) is provided with an opening (111), and a transparent plate (4) is sealed at the opening (111).

9. The dust cover according to any one of claims 1 to 4, characterized in that: The dust cover is an integrally formed structure.

10. A contactor, characterized in that The utility model comprises a base and a dust cover as claimed in any one of claims 1 to 9.

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