Fuse shell assembly, fuse and electric equipment

Abstract

The utility model relates to a fuse shell assembly, a fuse and electric equipment. The fuse shell assembly comprises a first shell, a second shell and a limiting piece, and the second shell can be connected with the first shell in a buckled mode so that the second shell and the first shell can jointly form a cavity used for containing a melt in an enclosing mode; the limiting piece is arranged on the peripheral side of the first shell and the peripheral side of the second shell. The connecting structure of the fuse shell is simple, the first shell and the second shell can be conveniently connected together, meanwhile, the connecting structure and the limiting piece jointly guarantee stable connection of the first shell and the second shell, and therefore the using effect and the service life of the fuse are guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of fuses, and in particular, to a fuse housing assembly, a fuse, and an electrical device. Background Art

[0002] A fuse is a circuit protector that can melt the fuse inside the fuse housing when the current exceeds the specified value, thereby disconnecting the circuit and protecting the circuit and electrical appliances. Currently, the connection structure of the fuse housing is relatively complex and the connection stability is poor, which leads to the poor sealing of the fuse housing after long-term use, causing the arc extinguishing medium in the fuse housing to flow out, affecting the use effect and life of the fuse. Utility Model Content

[0003] The purpose of the present disclosure is to provide a fuse housing assembly, a fuse and an electrical device to ensure the stability of the fuse housing after connection, thereby at least partially solving the above technical problems.

[0004] In order to achieve the above-mentioned purpose, the first aspect of the present disclosure provides a fuse housing assembly, including: a first housing; a second housing capable of being snap-fitted and connected with the first housing to form a cavity for accommodating the fuse together with the first housing; and a limit member arranged on the outer peripheral side of the first housing and the second housing.

[0005] Optionally, one side of the first shell is rotatably connected to one side of the second shell, and the other side of the first shell is snap-fitted connected to the other side of the second shell.

[0006] Optionally, the fuse housing assembly further comprises a hinge member having two relatively rotating parts, the first housing and the second housing are respectively connected to one of the relatively rotating parts; the first housing has a connecting part on a side away from the hinge member, and the second housing has a connecting mating part on a side away from the hinge member, and the connecting part can be snapped into the connecting mating part to connect the other side of the first housing and the other side of the second housing.

[0007] Optionally, the connecting portion includes a connecting body extending along the extension direction of the other side of the first shell and a connecting hole arranged on the connecting body; the connecting mating portion includes a limiting groove formed on the other side of the second shell and a limiting protrusion protruding toward the outside of the limiting groove, the limiting groove is used to accommodate at least part of the connecting body, and the limiting protrusion is used to be inserted into the connecting hole.

[0008] Optionally, a first mounting portion is provided on the first shell, and a second mounting portion is provided on the second shell, and the first mounting portion and the second mounting portion are correspondingly arranged to form a mounting structure for mounting the limiting member.

[0009] Optionally, a plurality of the first mounting parts and a plurality of the second mounting parts are provided, and the plurality of the first mounting parts and the plurality of the second mounting parts are provided in a one-to-one correspondence to form a plurality of the mounting structures.

[0010] Optionally, the mounting structure is arranged at both ends of the first shell and the second shell.

[0011] Optionally, a positioning portion and / or a positioning matching portion that can be matched and connected with the positioning portion is provided on a side of the first shell close to the second shell; and the positioning portion and / or the other of the positioning matching portions is provided on a side of the second shell close to the first shell, so that the first shell and the second shell can be matched and connected through the positioning portion and the positioning matching portion.

[0012] Optionally, a plurality of the positioning portions and a plurality of the positioning matching portions are provided, and the plurality of the positioning portions and the plurality of the positioning matching portions are provided in a one-to-one correspondence.

[0013] Optionally, the positioning portion is configured as one of a positioning pin and a positioning groove, and the positioning matching portion is configured as the other of the positioning pin and the positioning groove.

[0014] Optionally, a positioning groove for connecting to a terminal is provided on a side of the first shell close to the second shell and / or a side of the second shell close to the first shell.

[0015] Optionally, the first shell and / or the second shell is provided with a sand filling hole communicating with the cavity and a plug capable of cooperating with the sand filling hole.

[0016] Optionally, the limiting member is configured as a limiting sleeve, and the limiting sleeve is arranged on the outer peripheral side of the first shell and the second shell.

[0017] According to a second aspect of the present disclosure, a fuse is provided, comprising a terminal, a fuse element and the above-mentioned fuse housing assembly, wherein the fuse element is disposed in the cavity, the terminals are disposed at both ends of the fuse element, some of the terminals are located outside the cavity, and some of the terminals are embedded in positioning slots of the first housing or the second housing.

[0018] Optionally, the terminal is a sheet-like structure.

[0019] A third aspect of the present disclosure provides an electrical device comprising the above-mentioned fuse.

[0020] Through the above technical scheme, the first shell and the second shell of the fuse shell of the present invention can be connected together conveniently and quickly by snapping together, and the limiting member can be arranged on the outer peripheral side of the first shell and the second shell after the first shell and the second shell are snapped together, so as to further ensure the stability of the first shell and the second shell after being connected. In addition, the limiting member can also make the first shell and the second shell tightly connected together when the first shell and the second shell are deformed due to long-term use. Based on this, the connection structure of the fuse shell of the present invention is simple, and can facilitate the connection of the first shell and the second shell together, and together with the limiting member, ensure the stability of the connection between the first shell and the second shell, so as to ensure the use effect and life of the fuse.

[0021] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0023] Figure 1 is a schematic diagram of the structure of a fuse housing assembly provided by an embodiment of the present disclosure from a first angle;

[0024] Figure 2 is a second angle structural schematic diagram of a fuse housing assembly provided in an embodiment of the present disclosure;

[0025] Figure 3 is a structural schematic diagram of a first housing of a fuse housing assembly provided in an embodiment of the present disclosure;

[0026] Figure 4 is a structural schematic diagram of a second housing of a fuse housing assembly provided in an embodiment of the present disclosure;

[0027] Figure 5 is a structural schematic diagram of the installation structure of the fuse housing assembly provided in an embodiment of the present disclosure;

[0028] Figure 6 is an exploded view of a fuse housing assembly provided by an embodiment of the present disclosure;

[0029] Figure 7 It is a diagram of the internal structure of the fuse housing assembly provided by the embodiment of the present disclosure after being connected to the terminal.

[0030] Description of Reference Numerals

[0031] 1-first shell; 2-second shell; 3-cavity; 4-limiting member; 5-connecting part; 51-connecting body; 52-connecting hole; 6-connecting matching part; 61-limiting groove; 62-limiting protrusion; 7-first mounting part; 8-second mounting part; 9-mounting structure; 10-positioning part; 11-positioning matching part; 12-positioning pin; 13-positioning groove; 14-positioning card slot; 15-sand filling hole; 16-plug; 17-terminal; 18-melt; 19-hinge; A-first direction; B-second direction. DETAILED DESCRIPTION

[0032] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0033] In the present disclosure, unless otherwise specified, directional words such as "inside" and "outside" refer to "inside" and "outside" relative to the corresponding component's own outline. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have order and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be understood as limitations on the present disclosure.

[0034] The fuse housing and the fuse in the exemplary embodiments of the present disclosure will be described below with reference to the accompanying drawings.

[0035] refer to Figures 1 to 7As shown, in the first aspect of the present disclosure, a fuse housing assembly is provided, comprising a first housing 1, a second housing 2 and a limit member 4, wherein the second housing 2 can be snap-fitted and connected with the first housing 1 to form a cavity 3 for accommodating a fuse 18 together with the first housing 1; the limit member 4 is arranged on the outer peripheral side of the first housing 1 and the second housing 2. The first shell 1 and the second shell 2 can be connected together by directly snapping together. Compared with the connection method using fasteners such as screws or bolts in the related art, the snapping method is relatively simpler and more efficient. The limiter 4 can be set on the outer peripheral side of the first shell 1 and the second shell 2 after the first shell 1 and the second shell 2 are snapped together, so as to further ensure the stability of the first shell 1 and the second shell 2 after being connected. In addition, since the first shell 1 and the second shell 2 are generally made of insulating materials such as plastic, they will produce slight deformation after being affected by the external environment and their own material properties (such as high temperature or material aging) for a long time, thereby causing the arc extinguishing medium in the fuse shell to leak, affecting the normal use of the fuse. The existence of the limiter 4 can still tightly connect the first shell 1 and the second shell 2 together when the first shell 1 and the second shell 2 are deformed. Based on this, the connection structure of the fuse shell of the present invention is simple, and can facilitate the connection of the first shell 1 and the second shell 2 together, while jointly ensuring the stability of the connection between the first shell 1 and the second shell 2 with the limiter 4, thereby ensuring the use effect and life of the fuse.

[0036] It should be noted that the limiting member 4 can be connected to the first shell 1 and the second shell 2 in various forms, for example, the limiting member 4 can be configured as a limiting sleeve, which is arranged on the outer peripheral side of the first shell 1 and the second shell 2; or, the limiting member 4 can also be configured as a U-shaped limiting clamp, which can be clamped on the side of the first shell 1 away from the second shell 2 and the side of the second shell 2 away from the first shell 1 through the U-shaped opening; or, the limiting member 4 can also be configured as a patch, which can be attached to the connection between the first shell 1 and the second shell 2 to ensure that the first shell 1 and the second shell 2 can be tightly connected together.

[0037] In some embodiments, Figure 2 and Figure 7 As shown, one side of the first shell 1 is rotatably connected to one side of the second shell 2, and the other side of the first shell 1 is snap-fitted to the other side of the second shell 2. The use of a rotating structure can further reduce the connection structure on the first shell 1 and the second shell 2, thereby making it easier to connect the first shell 1 and the second shell 2.

[0038] Among them, Figure 3 , Figure 4 , Figure 6 as well as Figure 7As shown, the fuse housing assembly also includes a hinge 19 having two relatively rotating parts, and the first housing 1 and the second housing 2 are respectively connected to one relatively rotating part; that is, the first housing 1 and the second housing 2 can be rotatably connected together by a hinge, or, in some embodiments not shown in the figure, the first housing 1 and the second housing 2 can also be rotatably connected together by a rotating shaft.

[0039] The first housing 1 has a connecting portion 5 on one side away from the hinge 19, and the second housing 2 has a connecting fitting portion 6 on one side away from the hinge 19. The connecting portion 5 can be inserted into the connecting fitting portion 6 to connect the other side of the first housing 1 and the other side of the second housing 2. In this way, one of the first housing 1 and the second housing 2 can be buckled and connected with the other by rotating along one side, so that the two can be connected together more conveniently and quickly.

[0040] Specifically, Figure 3 , Figure 4 The connecting portion 5 shown may include a connecting body 51 extending along the extension direction of the other side of the first housing 1 and a connecting hole 52 provided on the connecting body 51; the connecting mating portion 6 includes a limiting groove 61 formed on the other side of the second housing 2 and a limiting protrusion 62 protruding to the outside of the limiting groove 61, the limiting groove 61 is used to accommodate at least part of the connecting body 51, and the limiting protrusion 62 is used to be inserted into the connecting hole 52. This clamping method can not only facilitate the connection between the first housing 1 and the second housing 2, but also form an interlocking structure, thereby resisting the force exerted on the first housing 1 and the second housing 2 by the arc energy generated after the fuse 18 in the cavity 3 breaks, and preventing the fuse housing from opening due to the impact of the arc energy.

[0041] Alternatively, in some embodiments not shown in the figures, the connecting portion 5 and the connecting matching portion 6 may be respectively configured as a connecting groove and a connecting protrusion that can be inserted into the connecting groove.

[0042] In order to facilitate the setting of the limiting member 4 on the first shell 1 and the second shell 2, as shown in FIG. Figure 5 As shown, the first housing 1 may be provided with a first mounting portion 7, and the second housing 2 may be provided with a second mounting portion 8, and the first mounting portion 7 and the second mounting portion 8 are correspondingly arranged to form a mounting structure 9 for mounting the position-limiting member 4. Specifically, the first mounting portion 7 and the second mounting portion 8 may be configured as a groove-shaped structure extending toward one side of the cavity 3, so that the position-limiting member 4 can be conveniently and quickly arranged on the first housing 1 and the second housing 2.

[0043] In some embodiments of the present disclosure, Figure 5As shown, a plurality of first mounting parts 7 and a plurality of second mounting parts 8 are provided, and the plurality of first mounting parts 7 and the plurality of second mounting parts 8 are provided one by one to form a plurality of mounting structures 9. In this way, a plurality of limiting members 4 can be provided on the first shell 1 and the second shell 2, thereby further improving the limiting effect of the limiting members 4 on the first shell 1 and the second shell 2, so that the first shell 1 and the second shell 2 are connected more tightly and stably.

[0044] In addition, if Figure 5 As shown, at least two mounting structures 9 among the multiple mounting structures 9 can be respectively arranged at the two ends of the first shell 1 and the second shell 2, so that when the staff sets the limit member 4, the limit member 4 can be directly installed on the mounting structure 9 from the end of the shell. Compared with setting the mounting structure 9 at the center position of the first shell 1 and the second shell 2, setting the mounting structure 9 at the two ends of the first shell 1 and the second shell 2 can make the limit member 4 more quickly set on the mounting structure 9, thereby improving the assembly efficiency.

[0045] In some embodiments, Figure 6 As shown, a positioning portion 10 and / or a positioning matching portion 11 that can be matched and connected with the positioning portion 10 is provided on one side of the first shell 1 close to the second shell 2; a positioning portion 10 and / or a positioning matching portion 11 that can be matched and connected with the positioning portion 10 is provided on one side of the second shell 2 close to the first shell 1, so that the first shell 1 and the second shell 2 can be matched and connected through the positioning portion 10 and the positioning matching portion 11. Among them, the positioning portion 10 and the positioning matching portion 11 can be arranged in a variety of ways, for example, the first shell 1 can be provided with a positioning portion 10, and the second shell 2 can be provided with a corresponding positioning matching portion 11 and positioning portion 10; or, the first shell 1 can be provided with a positioning portion 10 and a positioning matching portion 11 at the same time, and the second shell 2 can be provided with a corresponding positioning matching portion 11 and positioning portion 10; the positioning portion 10 and the positioning matching portion 11 can locate the connection position of the first shell 1 and the second shell 2 to ensure the assembly accuracy when the first shell 1 and the second shell 2 are connected and assembled. In addition, the stability of the first shell 1 and the second shell 2 after being connected can be ensured, and the looseness of the first shell 1 and the second shell 2 after being connected can be reduced or even avoided.

[0046] Among them, Figure 6 As shown, the positioning portion 10 and the positioning matching portion 11 can be provided in plurality, and the plurality of positioning portions 10 and the plurality of positioning matching portions 11 are provided in one-to-one correspondence. By increasing the number of the positioning portions 10 and the positioning matching portions 11, the assembly accuracy of the first shell 1 and the second shell 2 during installation and the stability after installation can be further improved.

[0047] Specifically, Figure 6As shown, the positioning portion 10 can be configured as one of the positioning pin 12 and the positioning groove 13, and the positioning matching portion 11 can be configured as the other of the positioning pin 12 and the positioning groove 13. In this way, when the first shell 1 and the second shell 2 are connected and positioned, it is sufficient to insert the positioning pin 12 into the positioning groove 13. The overall structure is simple and convenient, and the connection position of the first shell 1 and the second shell 2 can be quickly positioned, thereby improving the assembly efficiency of the first shell 1 and the second shell 2.

[0048] In some embodiments of the present disclosure, Figure 6 As shown, a positioning slot 14 for connecting with the terminal 17 is provided on the side of the first housing 1 close to the second housing 2 and / or the side of the second housing 2 close to the first housing 1. When the terminal 17 is connected to the fuse housing assembly, its wiring area will be located outside the fuse housing assembly, and the remaining area can be located in the cavity 3 as an installation area connected to the fuse housing assembly. Based on this, the installation area of ​​the terminal 17 can be directly snapped into the positioning slot 14 to ensure the stability of the terminal 17 after being connected to the fuse housing assembly. Specifically, the positioning slot 14 can be configured as a groove formed on the first shell 1 and / or the second shell 2, and the groove can be set on any side wall of the first shell 1 and / or the second shell 2. For example, the groove can be set on the two side walls of the first shell 1 and / or the second shell 2 in the first direction A, that is, the terminal 17 can have an installation area extending to both sides thereof to be inserted into the groove; the groove can also be set on the two side walls of the first shell 1 and / or the second shell 2 in the second direction B, that is, the installation area of ​​the terminal 17 can be inserted into the groove at the junction with the shell assembly. Due to the arc generated when the fuse 18 is melted, such as Figure 4 , Figure 6 and Figure 7 As shown, in order to reduce or avoid the impact of the energy generated by the electric arc on the fuse or other equipment, a sand filling hole 15 communicated with the cavity 3 and a plug 16 capable of cooperating with the sand filling hole 15 can be provided on the first shell 1 and / or the second shell 2, the plug 16 is pulled out, and the arc extinguishing medium is poured into the cavity 3 through the sand filling hole 15, and then the sand filling hole 15 is blocked with the plug 16, so that the arc extinguishing medium can be filled into the cavity 3, so as to extinguish the arc when the fuse 18 melts and generates an arc.

[0049] The arc extinguishing medium may be configured as quartz sand.

[0050] In a second aspect of the present disclosure, a fuse is provided, comprising a terminal 17, a fuse element 18 and the above-mentioned fuse housing assembly, wherein the fuse element 18 is disposed in the cavity 3, the terminals 17 are disposed at both ends of the fuse element 18, part of the terminals 17 are located outside the cavity 3, and part of the terminals 17 are embedded in the positioning slots 14 of the first housing 1 or the second housing 2. The fuse has all the beneficial effects of the above-mentioned fuse housing assembly, which will not be described in detail in the present disclosure.

[0051] Among them, the terminal 17 of the present disclosure can be constructed as a sheet-like structure. The sheet-like terminal is easy to process and manufacture and can be applicable to various installation scenarios.

[0052] The third aspect of the present disclosure provides an electrical device including the above-mentioned fuse. The electrical device has all the beneficial effects of the above-mentioned fuse, which will not be described in detail in the present disclosure.

[0053] Among them, electrical equipment includes but is not limited to new energy vehicles.

[0054] In summary, the present disclosure exemplarily illustrates the assembly process between the fuse housing, the terminal 17 and the fuse 18 .

[0055] The first shell 1 and the second shell 2 are separated to expose the cavity 3. Part of the terminal 17 at both ends of the fuse 18 can be clamped on the first shell 1 or the second shell 2 through the positioning slot 14. Then, one side of the first shell 1 or the second shell 2 can be rotated to gradually approach the connecting portion 5 and the connecting matching portion 6 until the connecting body 51 on the connecting portion 5 is clamped into the limiting groove 61, and the limiting protrusion 62 on the connecting matching portion 6 is clamped into the connecting hole 52, so that the first shell 1 and the second shell 2 can be buckled. At this time, the limiting member 4 is inserted into the mounting structure 9 from both ends of the first shell 1 and the second shell 2 to realize the assembly of the fuse. The connection structure of the fuse shell disclosed in the present invention is simple, and can facilitate the connection of the first shell 1 and the second shell 2 together, and together with the limiting member 4, ensure the stability of the connection between the first shell 1 and the second shell 2, thereby ensuring the use effect and life of the fuse.

[0056] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0057] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0058] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A fuse housing assembly, characterized in that: include: a first shell; A second shell, capable of being snap-fitted and connected with the first shell to enclose together with the first shell to form a cavity for accommodating the melt; as well as The limiting member is arranged on the outer peripheral sides of the first shell and the second shell.

2. The fuse housing assembly according to claim 1, characterized in that: One side of the first shell is rotatably connected to one side of the second shell, and the other side of the first shell is buckled and connected to the other side of the second shell.

3. The fuse housing assembly according to claim 2, characterized in that: The fuse housing assembly further comprises a hinge member having two relatively rotating parts, wherein the first housing and the second housing are respectively connected to one of the relatively rotating parts; The first shell has a connecting portion on one side away from the hinge, and the second shell has a connecting fitting portion on one side away from the hinge. The connecting portion can be inserted into the connecting fitting portion to connect the other side of the first shell and the other side of the second shell.

4. The fuse housing assembly according to claim 3, characterized in that: The connecting portion includes a connecting body extending along the extending direction of the other side of the first shell and a connecting hole arranged on the connecting body; The connection mating portion includes a limiting groove formed on the other side of the second shell and a limiting protrusion protruding outward of the limiting groove, the limiting groove is used to accommodate at least part of the connection body, and the limiting protrusion is used to be inserted into the connection hole.

5. The fuse housing assembly according to claim 1, wherein: The first shell is provided with a first mounting portion, and the second shell is provided with a second mounting portion. The first mounting portion and the second mounting portion are correspondingly arranged to form a mounting structure for mounting the limiting member.

6. The fuse housing assembly according to claim 5, characterized in that: A plurality of the first mounting parts and a plurality of the second mounting parts are provided, and the plurality of the first mounting parts and the plurality of the second mounting parts are provided in a one-to-one correspondence to form a plurality of the mounting structures.

7. The fuse housing assembly according to claim 6, characterized in that: The mounting structure is arranged at both ends of the first shell and the second shell.

8. The fuse housing assembly according to claim 1, wherein: A positioning portion and / or a positioning matching portion that can be matched and connected with the positioning portion is provided on a side of the first shell close to the second shell; the positioning portion and / or the positioning matching portion is provided on a side of the second shell close to the first shell, so that the first shell and the second shell can be matched and connected through the positioning portion and the positioning matching portion.

9. The fuse housing assembly according to claim 8, characterized in that: The positioning portion and the positioning matching portion are both provided in plurality, and the plurality of positioning portions and the plurality of positioning matching portions are provided in one-to-one correspondence.

10. The fuse housing assembly according to claim 9, characterized in that The positioning portion is configured as one of a positioning pin and a positioning groove, and the positioning matching portion is configured as the other of the positioning pin and the positioning groove.

11. The fuse housing assembly according to claim 1, wherein: A positioning groove for connecting with a terminal is provided on a side surface of the first shell close to the second shell and / or a side surface of the second shell close to the first shell.

12. The fuse housing assembly according to claim 1, wherein: The first shell and / or the second shell are provided with a sand filling hole communicating with the cavity and a plug capable of cooperating with the sand filling hole.

13. The fuse housing assembly according to any one of claims 1 to 12, characterized in that: The limiting member is configured as a limiting sleeve, and the limiting sleeve is arranged on the outer peripheral side of the first shell and the second shell.

14. A fuse, characterized in that: It comprises a terminal, a fuse and a fuse housing assembly as described in any one of claims 1-13, wherein the fuse is arranged in the cavity, the terminals are arranged at both ends of the fuse, part of the terminals are located outside the cavity, and part of the terminals are embedded in the positioning grooves of the first housing or the second housing.

15. The fuse according to claim 14, characterized in that The terminal is a sheet-like structure.

16. An electrical equipment, characterized in that: Including the fuse described in claim 14 or 15.

Images