CN216487760U - Heat dissipation mechanism and isolating switch - Google Patents

Abstract

A heat dissipation mechanism and an isolating switch relate to the technical field of low-voltage electrical appliances. The heat dissipation mechanism comprises a shell, a first fixed contact connected in the shell and a movable contact mechanism connected in the shell; a first heat dissipation port and a second heat dissipation port are respectively arranged on two opposite sides of the shell, and a first convection channel is arranged on the moving contact mechanism; the moving contact mechanism is driven to move so as to be switched on with the first fixed contact, and the first heat dissipation port and the second heat dissipation port are communicated through the first convection channel to form a first heat dissipation channel. The isolating switch comprises the heat dissipation mechanism. The heat dissipation mechanism can reduce the temperature of the isolating switch.

Description

Heat dissipation mechanism and isolating switch

Technical Field

The utility model relates to the technical field of low-voltage electric appliances, in particular to a heat dissipation mechanism and an isolating switch.

Background

The isolating switch is essential equipment for ensuring the safety of power utilization and switching circuits. The isolating switch operating mechanism is driven to separate the moving contact of the isolating switch from the first fixed contact for isolating the power supply and the equipment, so that the electricity utilization safety and the personal safety of a user are protected.

However, most of the existing isolating switches, especially products with large current specifications, have the problems of large structure volume and poor temperature rise effect. Therefore, how to overcome the temperature rise problem of the isolating switch has become a technical problem to be solved urgently at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a heat dissipation mechanism and an isolating switch.

The embodiment of the utility model is realized by the following steps:

in one aspect of the present invention, a heat dissipation mechanism is provided, which includes a housing, a first fixed contact connected in the housing, and a movable contact mechanism connected in the housing; a first heat dissipation port and a second heat dissipation port are respectively arranged on two opposite sides of the shell, and a first convection channel is arranged on the moving contact mechanism; the moving contact mechanism is driven to move so as to be switched on with the first fixed contact, and the first heat dissipation port and the second heat dissipation port are communicated through the first convection channel to form a first heat dissipation channel. The heat dissipation mechanism can reduce the temperature of the isolating switch.

Optionally, a first air outlet is formed in the first fixed contact, and the first air outlet and the first convection channel are located on the same side of the shell; when the moving contact mechanism and the first fixed contact are switched on, the first heat dissipation port and the second heat dissipation port respectively pass through the first air outlet and the first convection channel to form a first heat dissipation channel.

Optionally, the first heat dissipation port and the second heat dissipation port are disposed on opposite sides of the housing along a first direction, where the first direction is a direction in which the first fixed contact and the moving contact mechanism are arranged.

Optionally, the first heat dissipation opening is distributed at one end of the housing away from the first stationary contact.

Optionally, the first heat dissipation channel is parallel to the first direction.

Optionally, the first heat dissipation opening and the second heat dissipation opening respectively include a plurality of through grooves arranged along a second direction, and the second direction is a width direction of the housing.

Optionally, the movable contact mechanism has a first blocking member, and the first blocking member and the first convection channel are located on the same side of the housing; the moving contact mechanism is driven to move so as to be separated from the first fixed contact, and the first blocking piece closes the first heat dissipation channel.

Optionally, the heat dissipation mechanism further includes a second fixed contact located at an end of the moving contact mechanism away from the first fixed contact; the moving contact mechanism comprises two moving contacts and drives the moving contact mechanism to move, and the two moving contacts are respectively switched on with the first fixed contact and the second fixed contact or respectively switched off with the first fixed contact and the second fixed contact; the first heat dissipation openings and the second heat dissipation openings respectively comprise two groups, the two groups of first heat dissipation openings are respectively positioned at two opposite sides of the first fixed contact, the two groups of second heat dissipation openings are respectively positioned at two opposite sides of the second fixed contact, and the two groups of first heat dissipation openings are respectively arranged corresponding to the two groups of second heat dissipation openings; the moving contact mechanism further comprises a second convection channel located on one side of the moving contact mechanism, which is far away from the first convection channel, wherein one group of corresponding first heat dissipation ports and second heat dissipation ports are communicated through the first convection channel to form a first heat dissipation channel, and the other group of corresponding first heat dissipation ports and second heat dissipation ports are communicated through the second convection channel to form a second heat dissipation channel.

Optionally, a second air outlet is formed in the second fixed contact, and the second air outlet and the second convection channel are located on the same side of the shell; when the moving contact mechanism and the second fixed contact are switched on, the first heat dissipation port and the second heat dissipation port respectively pass through the second convection channel and the second air outlet to form a second heat dissipation channel.

Optionally, the movable contact mechanism further has a second blocking member, and the second blocking member and the second convection channel are located on the same side of the housing; the moving contact mechanism is driven to move so as to be separated from the first fixed contact and the second fixed contact, and the second blocking piece closes the second heat dissipation channel.

Optionally, the housing includes a first cover and a second cover detachably connected to each other, and the first cover and the second cover together to form a first heat dissipation opening and a second heat dissipation opening.

In another aspect of the present invention, a disconnecting switch is provided, which includes the above heat dissipation mechanism.

The beneficial effects of the utility model include:

the heat dissipation mechanism comprises a shell, a first fixed contact connected in the shell and a moving contact mechanism connected in the shell; a first heat dissipation port and a second heat dissipation port are respectively arranged on two opposite sides of the shell, and a first convection channel is arranged on the moving contact mechanism; the moving contact mechanism is driven to move so as to be switched on with the first fixed contact, and the first heat dissipation port and the second heat dissipation port are communicated through the first convection channel to form a first heat dissipation channel. Therefore, when the moving contact mechanism is driven to move so as to switch on the moving contact mechanism and the first fixed contact, the isolating switch is in a normal working state at the moment, the first heat dissipation port and the second heat dissipation port which are positioned at two opposite ends of the shell can be communicated with each other through the first convection channel on the moving contact mechanism, and then the first heat dissipation channel is formed, so that heat generated inside the isolating switch can be circulated to the outside of the isolating switch through the first heat dissipation channel, the temperature inside the isolating switch is further reduced, and the heat dissipation effect of the isolating switch is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a heat dissipation mechanism corresponding to a closing state according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of the heat dissipation mechanism according to the second embodiment of the present invention when the heat dissipation mechanism is in a closed state;

fig. 3 is a schematic structural diagram of a movable contact mechanism according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the heat dissipation mechanism according to the embodiment of the present invention when the heat dissipation mechanism is in an open state;

fig. 5 is a second schematic structural diagram of the heat dissipation mechanism according to the second embodiment of the present invention when the heat dissipation mechanism is in the open state.

Icon: 10-a housing; 11-a first heat sink; 12-a second heat sink; 13-a first cover; 14-a second cover; 20-a first stationary contact; 21-a first air outlet; 30-moving contact mechanism; 31-a first convection channel; 32-a second convection channel; 33-a first barrier; 34-a second barrier; 40-a second stationary contact; 41-a second air outlet; 50-arc extinguishing chamber.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, the present embodiment provides a heat dissipation mechanism, which includes a housing 10, a first stationary contact 20 connected in the housing 10, and a movable contact mechanism 30 connected in the housing 10; a first heat dissipation port 11 and a second heat dissipation port 12 are respectively arranged on two opposite sides of the shell 10, and a first convection channel 31 is arranged on the movable contact mechanism 30; the movable contact mechanism 30 is driven to move to close the first fixed contact 20, and the first heat dissipation port 11 and the second heat dissipation port 12 are communicated through the first convection channel 31 to form a first heat dissipation channel. The heat dissipation mechanism can reduce the temperature of the isolating switch.

The housing 10 is provided therein with a receiving cavity, and the first fixed contact 20 and the movable contact mechanism 30 are both received in the receiving cavity. In this embodiment, the housing 10 includes a first cover 13 and a second cover 14 detachably connected, and the first cover 13 and the second cover 14 cover to form a first heat dissipation opening 11 and a second heat dissipation opening 12, as shown in fig. 2. The connection manner of the first cover 13 and the second cover 14 is not limited, and may be, for example, a snap connection. Specifically, those skilled in the art can select the compound according to need.

The first heat dissipation opening 11 and the second heat dissipation opening 12 are disposed on two opposite sides of the housing 10 along a first direction, where the first direction is an arrangement direction of the movable contact mechanism 30 and the first fixed contact 20 (corresponding to fig. 1, the first direction is also a vertical direction in fig. 1). For example, heat dissipation openings may be respectively disposed on the same sides of the first cover 13 and the second cover 14, and the first heat dissipation opening 11 may be formed by matching and aligning the heat dissipation opening on the first cover 13 and the heat dissipation opening on the second cover 14; the second heat dissipation opening 12 is formed similarly.

In the present embodiment, the first heat dissipation opening 11 is distributed at an end of the housing 10 far away from the first stationary contact 20. That is, the first heat dissipation openings 11 are located on two side surfaces of the housing 10 distributed along the first direction, and the first heat dissipation openings are located at one ends of the corresponding side surfaces far away from the first stationary contact, as shown in fig. 1. Correspondingly, since the first heat dissipation port 11 and the second heat dissipation port 12 are arranged along the first direction, accordingly, a line connecting the second heat dissipation port 12 and the first heat dissipation port 11 should be parallel to the first direction, as shown in fig. 1.

In this embodiment, the first heat dissipation channel is parallel to the first direction, i.e. as shown in fig. 1, the heat dissipation direction of the first heat dissipation channel is shown as the dotted line direction with an arrow on the left side in fig. 1, and it can be seen that the direction is parallel to the first direction.

In order to increase the convection effect and take the strength of the housing 10 into consideration, in the embodiment, the first heat dissipation opening 11 and the second heat dissipation opening 12 respectively include a plurality of through slots disposed along the second direction, and the second direction is the width direction of the housing 10. In fig. 1, the second direction is a horizontal direction of the orientation shown in fig. 1.

The moving contact mechanism 30 is provided with a moving contact to drive the moving contact mechanism 30 to rotate, and the moving contact can be contacted with the first fixed contact 20 to switch on the isolating switch; or, the movable contact mechanism 30 is driven to rotate, and the movable contact is separated from the first fixed contact 20, so that the disconnecting switch is switched off.

In this embodiment, the movable contact mechanism 30 is further provided with a first convection channel 31. When the moving contact mechanism 30 is driven to move to close the first stationary contact 20, the first heat dissipation port 11 may communicate with the first heat dissipation port 11 and the second heat dissipation port 12 through the first convection channel 31, so as to form a first heat dissipation channel (a dotted line direction with an arrow on the left side shown in fig. 1 is a direction of the first heat dissipation channel). Therefore, when the isolating switch is in a working state, heat generated inside the isolating switch can be quickly convected to the outside of the isolating switch through the first heat dissipation channel. Thereby improving the heat dissipation effect of the isolating switch.

In summary, the heat dissipation mechanism provided by the present application includes a housing 10, a first fixed contact 20 connected in the housing 10, and a movable contact mechanism 30 connected in the housing 10; a first heat dissipation port 11 and a second heat dissipation port 12 are respectively arranged on two opposite sides of the shell 10, and a first convection channel 31 is arranged on the movable contact mechanism 30; the movable contact mechanism 30 is driven to move to close the first fixed contact 20, and the first heat dissipation port 11 and the second heat dissipation port 12 are communicated through the first convection channel 31 to form a first heat dissipation channel. Thus, when the moving contact mechanism 30 is driven to move so as to close the moving contact mechanism 30 and the first fixed contact 20, at this time, the isolating switch is in a normal working state, at this time, the first heat dissipation port 11 and the second heat dissipation port 12 located at the two opposite ends of the housing 10 can be communicated with each other through the first convection channel 31 on the moving contact mechanism 30, so as to form a first heat dissipation channel, so that heat generated inside the isolating switch can be circulated to the outside of the isolating switch through the first heat dissipation channel, thereby reducing the temperature inside the isolating switch, and improving the heat dissipation effect thereof.

Referring to fig. 1 and fig. 2, optionally, a first air outlet 21 is further disposed on the first stationary contact 20, and the first air outlet 21 and the first convection channel 31 are located on the same side of the housing 10; when the moving contact mechanism 30 and the first fixed contact 20 are switched on, the first heat dissipation port 11 and the second heat dissipation port 12 respectively pass through the first air outlet 21 and the first convection channel 31 to form a first heat dissipation channel.

By arranging the first air outlet 21, on one hand, the heat dissipation area of the static contact can be increased; on the other hand, the effective area of the first heat dissipation channel can be increased, and the heat dissipation effect of the heat dissipation mechanism is further improved.

The shape of the first air outlet 21 is not limited in this application, and those skilled in the art can select the shape according to the needs, for example, the shape may be circular, U-shaped, or polygonal.

In order to further improve the heat dissipation effect of the heat dissipation mechanism, in this embodiment, optionally, as shown in fig. 1, the first heat dissipation openings 11 include two groups, where the two groups of first heat dissipation openings 11 are respectively located at two opposite sides of the first stationary contact 20, and one group of first heat dissipation openings 11 is communicated with the second heat dissipation opening 12 through the first convection channel 31; the movable contact mechanism 30 further includes a second convection channel 32, the second convection channel 32 and the first convection channel 31 are located on two opposite sides of the movable contact mechanism 30, and the other group of the first heat dissipation ports 11 is communicated with the second heat dissipation ports 12 through the second convection channel 32.

For example, two sets of the first heat dissipation ports 11 located below the housing 10 may be provided, and only one set or a plurality of sets of the second heat dissipation ports 12 located above the housing 10 may be provided.

This application just distributes two sets of first thermovents 11 in the relative both sides of first static contact 20 (corresponding left side and right side of first static contact 20 promptly) through setting up two sets of first thermovents 11, like this, can make the inside heat that produces of isolator divide into two the tunnel and dispel the heat. One path of the heat is dissipated through a group of first heat dissipating ports 11, a first convection channel 31 and a second heat dissipating port 12; and the other path dissipates heat through another set of the first heat dissipation opening 11, the second convection channel 32 and the second heat dissipation opening 12. Thus, the heat dissipation efficiency can be further improved.

It should be noted that the orientation described in the present embodiment is only for convenience of explanation with reference to the drawings for understanding, and the corresponding orientation refers to the orientation corresponding to the drawings and should not be considered as the only limitation of the usage state of the present application.

Referring to fig. 4 and fig. 5 in combination, in the present embodiment, optionally, the movable contact mechanism 30 further includes a first blocking member 33, and the first blocking member 33 and the first convection channel 31 are located on the same side of the housing 10; the movable contact mechanism 30 is driven to move to separate from the first stationary contact 20, and the first blocking member 33 closes the first heat dissipation channel.

The first blocking member 33 may be a separate member provided on the movable contact mechanism 30, or may be a part of the movable contact mechanism 30. In this embodiment, referring to fig. 4, the first blocking member 33 is a part of the movable contact mechanism 30, and the first blocking member 33 is a wall surface of the movable contact mechanism 30.

In the present application, the first convection channel 31 and the first blocking member 33 are disposed on the same side of the movable contact mechanism 30, so that when the movable contact mechanism is closed, the first convection channel 31 can communicate the first heat dissipation opening 11 and the second heat dissipation opening 12 to form a first heat dissipation channel, and at this time, the first blocking member 33 does not affect the first heat dissipation channel because it rotates to the other side of the housing 10 (the heat dissipation path far from the first heat dissipation opening 11 and the second heat dissipation opening 12, as shown in fig. 1); during opening, the first blocking member 33 rotates to the heat dissipation paths of the first heat dissipation opening 11 and the second heat dissipation opening 12 (as shown in fig. 4), so that the first blocking member 33 closes the first heat dissipation channel. This application can be so that when the separating brake state, first heat dissipation channel is sealed through the setting of first blockking 33, consequently, can effectively improve isolator's explosion chamber 50's arc extinguishing ability. It should be noted that the arc extinguishing chamber 50 is disposed between the first fixed contact 20 and the movable contact mechanism 30 and between the second fixed contact 40 and the movable contact mechanism 30.

The first blocking piece 33 is arranged, so that the first heat dissipation channel can be blocked when the disconnecting switch is switched off, a large amount of gas generated during the switching-off process of the disconnecting switch is released downwards quickly (the up-down direction indicated here corresponds to the direction shown in fig. 4), an electric arc is blown out from the first heat dissipation opening 11, and the switching-off capacity and the arc extinguishing capacity of the disconnecting switch are improved.

Referring to fig. 1 and fig. 4, optionally, in the present embodiment, the heat dissipation mechanism may further include a second fixed contact 40, where the second fixed contact 40 is located at an end of the movable contact mechanism 30 far away from the first fixed contact 20; the moving contact mechanism 30 includes two moving contacts, and drives the moving contact mechanism 30 to move, and the two moving contacts are respectively switched on with the first fixed contact 20 and the second fixed contact 40 or respectively switched off with the first fixed contact 20 and the second fixed contact 40.

That is, during closing, the first fixed contact 20 is in contact with one of the movable contacts of the movable contact mechanism 30, and the second fixed contact 40 is in contact with the other movable contact of the movable contact mechanism 30; similarly, during opening, the first fixed contact 20 is separated from the moving contact of the moving contact mechanism 30, and the second fixed contact 40 is also separated from the moving contact of the moving contact mechanism 30.

Referring to fig. 1, the first heat dissipating ports 11 and the second heat dissipating ports 12 each include two sets, the two sets of first heat dissipating ports 11 are respectively located at two opposite sides of the first stationary contact 20, the two sets of second heat dissipating ports 12 are respectively located at two opposite sides of the second stationary contact 40, and the two sets of first heat dissipating ports 11 are respectively disposed corresponding to the two sets of second heat dissipating ports 12; the movable contact mechanism 30 further includes a second convection channel 32 located on a side thereof facing away from the first convection channel 31 (i.e. the second convection channel 32 and the first convection channel 31 are located on opposite sides of the movable contact mechanism 30), wherein one group of the corresponding first heat dissipation openings 11 and the corresponding second heat dissipation openings 12 are communicated through the first convection channel 31 to form a first heat dissipation channel, and the other group of the corresponding first heat dissipation openings 11 and the corresponding second heat dissipation openings 12 are communicated through the second convection channel 32 to form a second heat dissipation channel.

That is, as shown in fig. 1, two sets of first heat dissipation openings 11 are disposed side by side at the bottom of the housing 10, two sets of second heat dissipation openings 12 are disposed side by side at the top of the housing 10, the left first heat dissipation opening 11 corresponds to the left second heat dissipation opening 12, and the right first heat dissipation opening 11 corresponds to the right second heat dissipation opening 12.

In addition, the second convection channel 32 of the present application is disposed on the movable contact mechanism 30, and the second convection channel 32 and the first convection channel 31 are located on two opposite sides of the movable contact mechanism 30 itself. Corresponding to fig. 1, the first convection channel 31 is located on the left side of the movable contact mechanism 30, the second convection channel 32 is located on the right side of the movable contact mechanism 30, and the first convection channel 31 and the second convection channel 32 are respectively disposed at two opposite ends of the movable contact mechanism 30 (corresponding to fig. 1, the first convection channel 31 is located at the bottom of the movable contact mechanism 30, and the second convection channel 32 is located at the upper portion of the movable contact mechanism 30). Thus, the movable contact mechanism 30 is driven to move to close the disconnector, and at this time, one group of the first heat dissipation ports 11 may communicate with one group of the second heat dissipation ports 12 through the first convection channel 31 to form a first heat dissipation channel, and the other group of the first heat dissipation ports 11 may communicate with the other group of the second heat dissipation ports 12 through the second convection channel 32 to form a second heat dissipation channel. Therefore, the two convection channels can be generated, and the heat dissipation effect of the heat dissipation mechanism can be further improved.

The same as the first air outlet 21 arranged on the first static contact 20 corresponding to the first heat dissipation channel, in this embodiment, optionally, the second static contact 40 may also be correspondingly provided with a second air outlet 41, and the second air outlet 41 and the second convection channel 32 are located on the same side of the housing 10; when the moving contact mechanism 30 and the second fixed contact 40 are switched on, the first heat dissipation opening 11 and the second heat dissipation opening 12 respectively pass through the second convection channel 32 and the second air outlet 41 to form a second heat dissipation channel. In this way, by the arrangement of the second air outlet 41, the heat dissipation area of the second stationary contact 40 and the heat dissipation area of the second heat dissipation channel can also be increased.

Similarly, in this embodiment, the shape of the second air outlet 41 is not limited in this application, and can be determined by those skilled in the art according to the needs.

In order to effectively improve the arc extinguishing capability of the isolating switch, in the present embodiment, the movable contact mechanism 30 further has a second blocking member 34, and the second blocking member 34 and the second convection channel 32 are located on the same side of the housing 10; the movable contact mechanism 30 is driven to move to separate from the first stationary contact 20 and the second stationary contact 40, and the second blocking member 34 closes the second heat dissipation channel. Since the principle and technical effect of the second blocking member 34 are the same as those of the first blocking member 33, the working principle and technical effect of the second blocking member 34 can be derived by those skilled in the art from the foregoing description of the first blocking member 33, and therefore, the detailed description thereof is omitted in this application.

The second blocking piece 34 is arranged, so that the second heat dissipation channel can be blocked when the isolating switch is switched off, a large amount of gas generated during the switching-off process of the isolating switch is released upwards quickly (the up-down direction pointed out here corresponds to the direction shown in fig. 4), an electric arc is blown out from the second heat dissipation port 12, and the switching-off capacity and the arc extinguishing capacity of the isolating switch are improved. It should be understood that when the first heat dissipation channel and the second heat dissipation channel are provided, and the first blocking member 33 and the second blocking member 34 are provided, a large amount of generated gas can be rapidly released upward or downward when opening the brake.

In another aspect of the present invention, a disconnecting switch is provided, which includes the above heat dissipation mechanism. Since the specific structure and the beneficial effects of the heat dissipation mechanism have been described in detail in the foregoing, detailed descriptions are omitted in this application.

The above description is only an alternative embodiment of the present invention and is not intended to limit the present invention, and various modifications and variations of the present invention may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the utility model is not described in any way for the possible combinations in order to avoid unnecessary repetition.

Claims (11)

1. A heat dissipation mechanism is characterized by comprising a shell (10), a first fixed contact (20) connected in the shell (10) and a movable contact mechanism (30) connected in the shell (10); a first heat dissipation port (11) and a second heat dissipation port (12) are respectively arranged on two opposite sides of the shell (10), and a first convection channel (31) is arranged on the moving contact mechanism (30);

the moving contact mechanism (30) is driven to move so as to be switched on with the first fixed contact (20), and the first heat dissipation opening (11) is communicated with the second heat dissipation opening (12) through the first convection channel (31) to form a first heat dissipation channel.

2. The heat dissipation mechanism of claim 1, wherein the first stationary contact (20) is provided with a first air outlet (21), and the first air outlet (21) and the first convection channel (31) are located on the same side of the housing (10); when the moving contact mechanism (30) and the first fixed contact (20) are switched on, the first heat dissipation port (11) and the second heat dissipation port (12) respectively pass through the first air outlet (21) and the first convection channel (31) to form a first heat dissipation channel.

3. The heat dissipation mechanism as claimed in claim 1, wherein the first heat dissipation opening (11) and the second heat dissipation opening (12) are disposed on opposite sides of the housing (10) along a first direction, and the first direction is an arrangement direction of the first stationary contact (20) and the movable contact mechanism (30).

4. The heat dissipating mechanism of claim 3, wherein the first heat dissipating opening (11) is distributed at an end of the housing (10) away from the first stationary contact (20).

5. The heat dissipation mechanism of claim 3, wherein the first heat dissipation channel is parallel to the first direction.

6. The heat dissipation mechanism according to claim 1, wherein the first heat dissipation port (11) and the second heat dissipation port (12) each include a plurality of through grooves arranged in a second direction, the second direction being a width direction of the housing (10).

7. The heat dissipating mechanism of claim 1, wherein the movable contact mechanism (30) has a first blocking member (33), the first blocking member (33) and the first convection channel (31) being located on the same side of the housing (10); the movable contact mechanism (30) is driven to move to separate from the first fixed contact (20), and the first blocking piece (33) closes the first heat dissipation channel.

8. The heat dissipating mechanism according to any one of claims 1 to 7, further comprising a second stationary contact (40), wherein the second stationary contact (40) is located at an end of the movable contact mechanism (30) away from the first stationary contact (20); the moving contact mechanism (30) comprises two moving contacts for driving the moving contact mechanism (30) to move, and the two moving contacts are respectively switched on with the first fixed contact (20) and the second fixed contact (40) or respectively switched off with the first fixed contact (20) and the second fixed contact (40); the first heat dissipation openings (11) and the second heat dissipation openings (12) respectively comprise two groups, the two groups of first heat dissipation openings (11) are respectively located on two opposite sides of the first fixed contact (20), the two groups of second heat dissipation openings (12) are respectively located on two opposite sides of the second fixed contact (40), and the two groups of first heat dissipation openings (11) are respectively arranged corresponding to the two groups of second heat dissipation openings (12); the movable contact mechanism (30) further comprises a second convection channel (32) located on a side thereof facing away from the first convection channel (31), wherein one group of the corresponding first heat dissipation openings (11) and the corresponding second heat dissipation openings (12) are communicated through the first convection channel (31) to form the first heat dissipation channel, and the other group of the corresponding first heat dissipation openings (11) and the corresponding second heat dissipation openings (12) are communicated through the second convection channel (32) to form the second heat dissipation channel.

9. The heat dissipation mechanism of claim 8, wherein a second air outlet (41) is disposed on the second stationary contact (40), and the second air outlet (41) and the second convection channel (32) are located on the same side of the housing (10); when the moving contact mechanism (30) and the second fixed contact (40) are switched on, the first heat dissipation port (11) and the second heat dissipation port (12) respectively pass through the second convection channel (32) and the second air outlet (41) to form a second heat dissipation channel.

10. The heat dissipation mechanism as recited in claim 8, wherein the movable contact mechanism (30) further has a second blocking member (34), the second blocking member (34) and the second convection channel (32) being located on the same side of the housing (10); the movable contact mechanism (30) is driven to move so as to be separated from the first fixed contact (20) and the second fixed contact (40), and the second blocking piece (34) closes the second heat dissipation channel.

11. A disconnector comprising a heat dissipating mechanism according to any one of claims 1 to 10.

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