Switching device and switching device with fuse

Abstract

Switching device (100), which comprises: a body (10) wherein the body (10) has a receiving space (11) for receiving a fuse (60); a drive shaft (20), wherein the drive shaft (20) has an open position and a closed position, wherein when the drive shaft (20) is in the open position, the switching device (100) is open and the fuse (60) is not in operation, and wherein when the drive shaft (20) is in the closed position, the switching device is closed and the fuse (60) is in operation; and a movable locking part (30) provided on the body (10), wherein the locking part (30) has a force-sensing part (31) and a force-exerting part (32), wherein the drive shaft (20) can exert force on the force-receiving part (31) during the movement from the open position to the closed position and drives the locking part (30) to the movement; characterized by a side hood (40) which is rotatably provided on the body (10), wherein the side hood limits the receiving space of the body, wherein the side hood (40) rotates from its initial position in a direction in which the receiving space (11) widens during the movement of the drive axis (20) from the open position to the closed position under the advancement of the force-exerting part (32) of the locking part (30).

Description

Technical field:

[0001] The present invention relates to a switching device and a switching device with a fuse. State of the art:

[0002] In switching devices, switching the actuating drive shaft between the open position and the closed position causes the drive shaft to be moved to contact and disconnect the moving contact and the static contact, so that the closing and opening of the switching device is controlled and the control of the switching of the power supply line is realized.

[0003] In switching devices with a fuse, due to the heat generated by the fuse during operation, an appropriate reduction of the problem of the resulting temperature increase is necessary.

[0004] CN103000406A and CN102810417A each relate to a locking device for a switching mechanism and an associated switching mechanism. DE102010031121A1 discloses a safety interlock for a switch. DE102007023234A1 describes a power disconnect switch for a motor vehicle. Content of the invention:

[0005] The objective of the present invention is to provide a switching device.

[0006] The invention is defined by the claims.

[0007] The switching device includes: an actual body, wherein the aforementioned actual body has a receiving space for receiving a fuse, a drive axle, wherein the drive axle referred to above has an open position and a closed position; which also includes: a movable locking part, wherein the locking part referred to above has a force-sensing part and a force-exerting part, wherein the drive axis referred to above can exert force on the force-sensing part during the movement from the open position to the closed position and drives the locking part referred to above to movement; a side hood, wherein the aforementioned side hood is rotatably provided on the aforementioned main body, wherein the aforementioned side hood rotates from its initial position along the direction of the expansion of the aforementioned receiving space during the movement of the aforementioned drive axis from the open position to the closed position under the propulsion of the force-exerting part.

[0008] In this way, the switching device has a relatively large space to accommodate the fuse during operation, and even when heat is generated within the switching device, there is no excessive temperature increase, thus ensuring the safe operation of the switching device. At the same time, the relatively large space also allows for the installation of relatively large fuses.

[0009] In a practical embodiment, the aforementioned side hoods are arranged as a pair opposite each other, and the aforementioned force-exercising part is also a pair. During the movement of the aforementioned drive axis, the aforementioned side hoods rotate from the open position to the closed position under the respective forward motion of the force-exercising part, along the direction of the expansion of the aforementioned receiving space. This design allows the side hoods on both sides to open to a specific extent, thereby expanding the receiving space as much as possible from both directions and further reducing the temperature increase.

[0010] In a practical embodiment, the aforementioned side cover has an opening on its side furthest from the aforementioned drive shaft. Even when the drive shaft is in the open position and the switching device is in the open state, the fuse can enter the receiving space through this opening and is not prevented from entering by the side cover due to its width.

[0011] In a practical embodiment, the aforementioned side cover has a solid section and a heat dissipation element connected to it. For example, heat dissipation elements are provided on both sides of the solid section. Because the switching device can be mounted either frontally or laterally, if the mounting method used causes warm air within the receiving chamber to flow towards the side cover, the solid section may block the warm air and direct it to the heat dissipation elements on both sides, for example, through heat dissipation holes, etc., resulting in a relatively uniform temperature on the side cover.If the massive area is designed as a heat dissipation part, the warm air is immediately expelled from the area in question, and the heat concentrates in that area, resulting in a very high temperature.

[0012] Furthermore, a number of heat-separation ribs are provided on the side of the aforementioned solid area facing away from the aforementioned fusible link. Because the heat-separation ribs protrude from the surface, the temperature at the ribs is somewhat lower compared to the surface. If, in particular, spacing is provided between the heat-separation ribs to meet the requirements of IP20, even if the operator carelessly bumps the side of the cover, contact will only occur with the heat-separation ribs and not with the surface, thus preventing the risk of burns.

[0013] In a practical embodiment, the aforementioned side hood has a rotating part, wherein the aforementioned rotating part has a first locking element, wherein the aforementioned side hood is movably provided on the aforementioned actual body by the aforementioned rotating part, wherein, during the advancement by the aforementioned force-exerting part, the range of movement of the aforementioned side hood is restricted by the aforementioned first locking element striking the aforementioned actual body.

[0014] This prevents the side cover from sliding off the main body. When the first blocking piece touches the main body, the maximum intake area is defined.

[0015] Furthermore, the aforementioned rotating part also has a second blocking piece, wherein, when the aforementioned side hood is in its initial position, the aforementioned second blocking piece abuts the aforementioned actual body and defines the minimum receiving space.

[0016] In another practical embodiment, this also includes an elastic part, wherein the aforementioned elastic part, during the movement of the aforementioned drive axis from the open position to the closed position, drives the aforementioned lateral hood to rotate along the direction of the expansion of the aforementioned receiving space by means of its elastic force. Driving together with the locking part is possible, which further reduces the external drive force, thus enabling operation with relatively little external force, which increases ease of operation.

[0017] Furthermore, when the aforementioned drive shaft is in the closed position, the aforementioned elastic part can block the tendency of the aforementioned side cover to move back to its initial position, and the side cover cannot simply return to its initial position due to its own weight. Only under the application of an external force, such as manual force, is the elastic force of the elastic part overcome and the side cover returned to its initial position.

[0018] In a practical embodiment, the aforementioned side cover has a clamping opening, which can be clamped onto the aforementioned main body, thus securing the side cover. This facilitates cable connection for the operator and allows the switching device to be held in a relatively stable state, while requiring relatively little space, which simplifies processes such as logistics.

[0019] In a practical embodiment, the body described above comprises an outer housing, wherein the drive shaft described above is at least partially guided through the outer housing described above, and wherein the clamping opening described above can be clamped to the outer housing described above.

[0020] The present invention also provides a switching device with a fuse, which comprises any of the switching devices listed above and a fuse provided within the receiving space of the switching device described above. In this way, the switching device has a relatively large space for receiving the fuse during operation, so that even if heat is generated by the fuse, no excessive temperature increase occurs and the safe operation of the switching device is ensured. Explanation of the illustrations:

[0021] The following section provides a further explanation, in an easily understandable manner, of the aforementioned features, technical characteristics, advantages and practical embodiments of the present invention, using preferred practical embodiments in conjunction with the accompanying illustrations. At Fig. This is a representation of a practical embodiment of the switching device according to the present invention. At Fig. This is an exploded view of a practical embodiment of the switching device according to the present invention. At Fig. This is a representation of the side cover and the locking part of a practical embodiment of the switching device according to the present invention. At Fig. This is a representation of the drive axle in the open position of a practical embodiment of the switching device according to the present invention. At Fig. This is a representation of the drive shaft in the closed position of a practical embodiment of the switching device according to the present invention. Explanation of reference symbols: 10 Actual body; 11 Recording Room 12 Outer casing 121 Survey 122 holes 13 switches 14 Top cover 20 drive axle 30 locking part 31 Force-experiencing part 32 Force-exerting part 40 Side hood 41 Opening 42 Massive Area 43 Heat dissipation section 44 Turned part 441 First blocking piece 442 Second blocking piece 45 clamping opening 50 Elastic part 60 fuse 100 switching device Practical examples:

[0022] For the purpose of a clearer understanding of the technical features, purpose and effect of the present invention, an explanation of practical embodiments of the present invention is now given with reference to the accompanying illustrations, wherein the same reference numerals in the illustrations mean the same parts.

[0023] The illustrations discussed below, as well as the principles and various practical embodiments disclosed in the present patent file, serve only for illustrative purposes and must in no way be understood as limiting the scope of the disclosure. A person skilled in the relevant technical field will understand that the disclosed principles can be implemented at any suitable location in the system. The various creative technical teachings of the present invention are described by means of exemplary practical embodiments, which are not limiting in nature.

[0024] As in Fig. The present invention provides a switching device 100 which comprises an actual body 10 and a drive shaft 20 and enables an appropriate reduction of the problem of internal temperature increase.

[0025] At the in Fig. , Fig. and Fig. The practical embodiment shown comprises the switching device 100: a body 10, wherein the body 10 has a receiving space 11, wherein the fuse 60 can be provided within the receiving space 11 described above. In a practical embodiment, such a body 10 can comprise a switch 13, an outer housing 12 located on both sides of the switch 13, and an upper cover 14 provided on the upper part of the switch 13, wherein a certain space is provided between the upper cover 14 and the switch 13, the space in question being simultaneously defined by the outer housing 12. This space is the receiving space 11 for the possible reception of the fuse 60; a drive axle 20, wherein the drive axle 20 is in an open position ( Fig. ) and a closed position ( Fig. ). When the drive shaft 20 is in the open position, the switching device 100 is in the open state and the fuse 60 is also inactive. When the drive shaft 20 is in the closed position, the switching device is in the closed state and the fuse 60 is active. Warm air gradually concentrates in the receiving chamber 11, and to reduce the resulting temperature increase, the switching device 100 also includes: a movable locking part 30, wherein the locking part 30 can be provided on the actual body 10, wherein the locking part 30 has a force-sensing part 31 and a force-exerting part 32, wherein the drive shaft 20 can exert force on the force-sensing part 31 during the movement from the open position to the closed position and thus drives the locking part 30 to movement; A side cover 40, which may be made of plastic, is rotatably attached to the main body 10. During the movement of the drive shaft 20 from the open position to the closed position, the side cover 40 rotates from its initial position along the direction of the expansion of the receiving space 11 under the driving force of the force-exerting part 32 of the locking part 30. The aforementioned "initial position" is understood to be the position in which the side cover 40 is located when the drive shaft 20 is in the open position (i.e., when the switching device is in the open state) (see Fig. ).

[0026] Due to the advancement of the locking element 30, the side cover 40 can "open" to a certain extent, thus enlarging the receiving space 11 of the switching device 100. In this way, the switching device has a relatively large space for accommodating the fuse 60 during operation, and correspondingly a relatively large space for accommodating warm air. This prevents excessive temperature increases, even when the fuse 60 generates heat, and ensures the safe operation of the switching device. Furthermore, the increased space expands the range of applications for the switching device, allowing for relatively simple installation of fuses with larger dimensions.

[0027] In a practical embodiment, a pair of side hoods 40 can be provided, the two being positioned opposite each other on the main body, and a corresponding pair also being provided by the force-exerting part 32 of the locking part 30. During the movement of the drive axis 20 from the open position to the closed position, one force-exerting part 32 drives one side hood 40 forward, while the other force-exerting part 32 drives the other side hood 40 forward, so that they each rotate along the direction of the expansion of the receiving space 11. This design allows the receiving space 11 to be expanded as much as possible, thus further reducing the temperature rise.

[0028] In a practical embodiment, the side cover 40 has an opening 41 on its side furthest from the aforementioned drive shaft 20. The opening 41 can be only about 8 millimeters wide, so that even with the drive shaft 20 and the switching device in the open position, the fuse 60 can pass through the opening 41 into the receiving chamber 11 (as shown in Figure 1). Fig. shown).

[0029] In a practical embodiment, the side cover 40 has a solid section 42 and a heat dissipation element 43 connected to it. For example, heat dissipation elements are provided on both sides of the solid section 42 (of course, this can also be provided on only one side). Because the switching device 100 can be mounted either frontally or laterally, if the mounting method used causes warm air within the receiving chamber 11 to flow towards the side cover 40, the solid section 42 may block the warm air and direct it to the heat dissipation elements 43 located on both sides, for example, through heat dissipation holes, etc., resulting in a relatively uniform temperature on the side cover 40.If the massive area 42 is also designed as a heat dissipation part 43, the warm air is immediately expelled from the area in question and the heat is relatively concentrated.

[0030] Furthermore, a plurality of heat separation ribs 421 are provided on the side of the solid area 42 facing away from the fuse 60. Because the heat separation ribs 421 protrude above the surface, the temperature at the heat separation ribs 421 is somewhat lower compared to the surface. If, in particular, spacing is provided between the heat separation ribs 421 to meet the requirements of IP20, even if the operator carelessly bumps the side cover 40, contact will only occur with the heat separation ribs 421, thus preventing the risk of burns.

[0031] In a practical embodiment, the aforementioned side cover 40 has a rotating part 44, wherein the rotating part 44 has a first locking element 441, the side cover 40 being movably attached to the main body 10 by the rotating part 44, the range of movement of the side cover 40 being limited by the first locking element 441 contacting the main body 10 during the forward drive by the force-exerting part 32. This prevents the risk of the side cover 40 sliding off the main body 10.

[0032] The rotating part 44 may have a rotary groove, while the switch 13 of the main body 10 has a protruding pivot axis. The rotating part 44 is positioned close to the rotary groove and aligned with the pivot axis, and can rotate within a certain range relative to the switch 13. Naturally, a person skilled in the relevant technical field understands that other configurations are also possible, for example, where the rotating part 44 has a pivot axis and the switch 13 has a rotary groove.

[0033] Furthermore, the aforementioned rotating part 44 also has a second blocking piece 442, wherein, when the side hood 40 is in its initial position, the second blocking piece 442 abuts the actual body 10 and defines the minimum value of the receiving space 11.

[0034] In another practical embodiment, the switching device also includes an elastic part 50, for example a torsion spring, etc., wherein, during the movement of the drive shaft 20 from the open position to the closed position, the elastic part 50, by its elastic force, drives the side cover 40 to rotate along the direction of the expansion of the aforementioned receiving space 11. Thus, in addition to the driving force provided by the force-exerting part 32 of the locking part 30, driving force provided by the elastic part 50 is also possible, further reducing the requirements for the external drive force and increasing ease of operation.

[0035] Furthermore, when the drive shaft 20 is in the closed position, the elastic part 50 can block the tendency of the side cover 40 to move back to its initial position, and when the switching device is in the mounting position, the side cover 40 is in a vertical state. Even if the side cover 40 is opened to its current position, it cannot simply return to its initial position due to its own weight. Only under the application of an external force, such as manual force, is the elastic force of the elastic part 50 overcome and the side cover 40 returned to its initial position.

[0036] In a practical embodiment, the side cover 40 has a clamping opening 45, which can be clamped to the actual body 10, thus securing the side cover 40. This facilitates cable connection for the operator and allows the switching device to be held in a relatively stable state, while requiring relatively little space, which simplifies processes such as logistics.

[0037] In a practical embodiment, the actual body 10 can comprise an outer housing 12, wherein the drive shaft 20 is at least partially guided through the hole 122 located in the outer housing 12. Deviating from providing the side cover 40 in a movable manner on the switch 13, the side cover 40 can also be provided in a rotatable manner on the outer housing 12. Naturally, the clamping opening 45 can also be clamped to the projection 121 of the outer housing 12. Now, based on the Fig. and a practical example explaining the sequence of movements.

[0038] As in Fig. The side cover 40 is shown in its initial position when the switching device is in the open state. The space occupied by the switching device is minimal, and the receiving space 11 for the fuse 60 is correspondingly minimal. The second blocking piece 442 abuts the main body 10, and the side cover 40 cannot rotate further inwards, so that the side cover 40 is clamped to the main body by its clamping opening 45, resulting in a relatively fixed position of the side cover 40.

[0039] When the fuse 60 is required to operate, the drive shaft 20 rotates counterclockwise from its open position to the closed position. Accordingly, the drive shaft 20 engages the force-bearing part 31 on the locking part 30, and the force-exerting part 32 on the locking part 30 drives the side cover 40 outwards. Simultaneously, the elastic part 50 (for example, a torsion spring) drives the side cover 40 outwards by means of its accumulated elastic force. The clamping opening 45 of the side cover 40 gradually leaves its previous fixed position and rotates outwards along the expansion tendency of the receiving space 11.

[0040] As in Fig.As shown, when the drive shaft 20 reaches its closed position, the first locking element 441 located on the side cover 40 abuts the actual body 10 and blocks further rotation of the side cover 40. The side cover 40 is in its maximum position after opening, and the receiving chamber 11 is correspondingly in its maximum state. The elastic part 50 still possesses a certain elastic force. Even if the side cover 40 is driven forward by an external force in an attempt to return it to its initial position, the mechanism now generates sufficient resistance, due to the drive shaft 20 still being in the closed position, to prevent movement of the locking element 30 and thus prevent the side cover 40 from rotating inwards.

[0041] When it is necessary to return the side cover 40 to its initial position, the drive shaft 20 must first be moved to its open position, whereby the side cover 40 loses the resistance of the locking element 30. Only by driving the side cover 40 inwards can the elastic force of the elastic element 50 be overcome and its compression effected, whereby the clamping opening 45 of the side cover 40 is attached to the main body 10. Now the second blocking element 442 located on the side cover 40 abuts the main body 10, and even under the application of force, no further inward rotation of the side cover 40 occurs. The switching device is now in the open state, and the side cover 40 returns to its initial position.

[0042] The present invention also provides a switching device with a fuse 60, which comprises any of the switching devices listed above and a fuse 60 located in the receiving space 11 of the switching device. In this way, the switching device has a relatively large space for receiving the fuse 60 during operation, and even when heat is generated by the fuse 60, there is no excessive temperature increase, thus ensuring the safe operation of the switching device. At the same time, the relatively large receiving space also allows for the installation of fuses of relatively large dimensions.

[0043] In this text, the term "illustrative" means a "supplementary practical embodiment, example, or explanation." Illustrations or practical embodiments described as "illustrative" in this text should not be interpreted as more preferred or advantageous technical concepts.

[0044] The detailed explanations above are merely concrete descriptions of feasible practical embodiments of the present invention, without limiting the scope of protection of the present invention in any way. All equivalent practical embodiments or modifications obtained without deviation from the technical teaching of the present invention fall entirely within the scope of protection of the present invention.

Claims

[1] Switching device (100) comprising: a body (10) wherein the body (10) has a receiving space (11) for receiving a fuse (60); a drive shaft (20), wherein the drive shaft (20) has an open position and a closed position, wherein when the drive shaft (20) is in the open position, the switching device (100) is open and the fuse (60) is not in operation, and wherein when the drive shaft (20) is in the closed position, the switching device is closed and the fuse (60) is in operation; and a movable locking part (30) provided on the body (10), wherein the locking part (30) has a force-sensing part (31) and a force-exerting part (32), wherein the drive shaft (20) can exert force on the force-receiving part (31) during the movement from the open position to the closed position and drives the locking part (30) to the movement; characterized by a side hood (40) which is rotatably provided on the body (10), wherein the side hood limits the receiving space of the body, wherein the side hood (40) rotates from its initial position in a direction in which the receiving space (11) widens during the movement of the drive axis (20) from the open position to the closed position under the advancement of the force-exerting part (32) of the locking part (30). [2] Switching device (100) according to claim 1, characterized by, that the side hood (40) is a pair of hood elements arranged opposite each other and the force-exerting part (32) is also a pair of sub-elements (32), wherein the side hood elements (40) rotate from their initial position in a direction in which the receiving space (11) expands during the movement of the drive axis (20) from the open position to the closed position under the forward drive of the force-exerting sub-element (32). [3] Switching device (100) according to claim 1 or 2, characterized by , that the side hood (40) has an opening (41) on its side furthest from the drive axle (20). [4] Switching device (100) according to one of claims 1 to 3, characterized by , that the side hood (40) has a solid area (42) and a heat dissipation part (43) connected to it. [5] Switching device (100) according to claim 4, characterized by , that on the side of the solid area (42) of the side hood (40) facing away from the fuse (60) a plurality of heat separation ribs (421) are provided, in which the temperature is lower compared to the surface of the solid area (42). [6] Switching device (100) according to any one of claims 1 to 5, characterized by , that the side hood (40) has a rotating part (44), wherein the rotating part (44) has a first locking piece (441), wherein the side hood (40) is movably provided on the body (10) by the rotating part (44), wherein during the advancement by the force-exerting part (32) the range of movement of the side hood (40) is restricted by the first locking piece (441) coming into contact with the body (10). [7] Switching device (100) according to claim 6, characterized by, that the rotating part (44) also has a second blocking piece (442), wherein, when the side hood (40) is in its initial position, the second blocking piece (442) abuts the body (10). [8] Switching device (100) according to claim 1, characterized by , that it also includes an elastic part (50), wherein the elastic part (50) during the movement of the drive axis (20) from the open position to the closed position drives the side hood (40) to rotate along the direction of the expansion of the receiving space (11) by means of its elastic force. [9] Switching device (100) according to claim 8, characterized by , that when the drive shaft (20) is in the closed position, the elastic part (50) can block movement of the side hood (40) into its initial position due to its own weight. [10] Switching device (100) according to any one of claims 1 to 9, characterized by , that the side hood (40) has a clamping opening (45) wherein the clamping opening (45) can be clamped to the body (10) and thus secures the side hood (40). [11] Switching device (100) according to claim 10, characterized by , that the body (10) comprises an outer housing (12), wherein the drive shaft (20) is at least partially guided through the outer housing (12), wherein the clamping opening (45) can be clamped to the outer housing (12). [12] Switching device (100) comprising according to one of claims 1 to 11 and the fuse (60) provided within the receiving space (11).

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