Low-voltage wire harness safety socket and vehicle

Abstract

The utility model provides a low-voltage wire harness safety socket and a vehicle. The utility model relates to a low-voltage wire harness safety socket which is used for overload protection of a vehicle low-voltage wire harness and comprises a base, a safety insertion piece and a covering piece. Wherein an open cavity is formed in the middle of the base, the two sections of the low-voltage wire harnesses are inserted into the base from the outside of the base, and the ends of the low-voltage wire harnesses are exposed in the cavity; the safety insertion sheet is inserted into the cavity from the opening of the cavity and is electrically connected between the two end heads; the covering piece covers the base in a buckling manner; the base is provided with a clamping part which protrudes outwards in the radial direction of the cavity, and when the covering piece covers the base, the clamping part is matched with the inner wall of the covering piece in a clamping mode. The low-voltage wire harness safety socket has the advantages of good waterproof performance and sealing performance, and can solve the problem of function failure of the low-voltage wire harness safety socket.

Description

Technical Field

[0001] The utility model relates to the technical field of insurance sockets, in particular to a low-voltage wiring harness insurance socket.

[0002] The utility model also relates to a vehicle comprising the low-voltage wiring harness fuse socket. Background Art

[0003] Vehicle wiring harnesses generally need to be equipped with insurance structures for overload protection, and multiple insurance structures on the vehicle are usually integrated into a fuse box. At present, in order to meet the diversified development of vehicle functions and enrich the passenger experience, more and more wiring harnesses need to be installed inside the vehicle, and correspondingly, the number of fuse holes required to be reserved in the fuse box is also increasing. When the number of pre-designed fuse box holes is insufficient and the vehicle function is expanded, the fuse box needs to be re-developed and molded, which takes up a lot of space, takes a long time, and has a high investment cost.

[0004] Based on the above reasons, in the prior art, there is a fuse socket applied to a single low-voltage wiring harness. When the vehicle function is expanded, the overload protection function requirement is met by adding a fuse socket to the expanded single wiring harness, so that the original fuse box can be used. Moreover, this kind of fuse socket can be installed in a relatively spacious position, solving the problems of the fuse box occupying a large space inside the vehicle and the high cost of re-development.

[0005] However, this type of fuse socket has poorer protection than a fuse box. Compared with the fuse installed in the fuse box, the working environment of the fuse plug installed in the fuse socket is more severe, and it is easy for the contact to rust or even have poor contact due to the humid environment, thereby making the overload protection function of the fuse socket invalid. Utility Model Content

[0006] In view of this, the utility model aims to provide a low-voltage wiring harness fuse socket with good sealing and waterproof properties, solving the technical problems in the prior art of rusted contacts and even failure of the overload protection function of the fuse socket.

[0007] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0008] The utility model discloses a low-voltage wiring harness insurance socket, which is used for overload protection of a low-voltage wiring harness of a vehicle, and comprises:

[0009] A base, wherein an open cavity is formed in the middle of the base; two sections of the low-voltage wire harness are inserted into the base from the outside of the base, and the ends of each low-voltage wire harness are exposed in the cavity;

[0010] A safety plug, which is inserted into the cavity through the opening of the cavity and electrically connected between the two ends;

[0011] A cover member, wherein the cover member is buckled on the base from above the base along the axial direction of the cavity;

[0012] The portion of the base that is buckled on the inner side by the cover is provided with a clamping portion that protrudes radially outward along the cavity. When the cover is buckled on the base, the clamping portion and the inner wall of the cover are clamped and matched.

[0013] Furthermore, the base is constructed into a stepped shape formed by the shell and the reduced diameter portion located on the top of the shell due to fixed connection, and the clamping portion is formed on the reduced diameter portion.

[0014] Furthermore, a sealing member is disposed between the base and the covering member.

[0015] Furthermore, the sealing member is configured to be in a ring shape that fits the circumference of the inner wall of the covering member, and the sealing member is sleeved on the outer side of the reduced diameter portion.

[0016] Furthermore, a positioning groove is formed on one side of the sealing member that is in contact with the base, and a portion of the reduced diameter portion that is in contact with the sealing member extends toward the positioning groove to form a positioning portion, and the positioning portion is snap-fitted into the positioning groove.

[0017] Furthermore, the base also includes:

[0018] The terminal is arranged to be two symmetrical terminals about the center of the housing, one end of the terminal is electrically connected to the low-voltage wiring harness, and the other end is sleeved on a pin of the fuse plug to form an electrical connection.

[0019] Furthermore, the base also includes:

[0020] A limiting frame, one end of the terminal electrically connected to the low-voltage wiring harness is embedded in the limiting frame, and the limiting frame is embedded in the shell.

[0021] Furthermore, a mounting ring is provided on a side of the shell away from the covering member.

[0022] Furthermore, a connecting piece is provided between the cover and the base, and at least part of the connecting piece is made of a flexible material. Compared with the prior art, the utility model has the following advantages:

[0023] The low-voltage wiring harness safety socket and vehicle described in the utility model, wherein the base plays the role of supporting the safety plug and connecting the low-voltage wiring harness, and can realize the electrical connection between the safety plug and the low-voltage wiring harness. When the load of the low-voltage wiring harness exceeds a certain value, the safety plug electrically connected to the low-voltage wiring harness will fuse, realizing the basic function of overload protection. One end of the safety plug pin is inserted into the cavity in the base, and a cover is installed on the base. The cover and the clamping part on the base are abutted to form a waterproof sealing structure for the safety plug, which can effectively reduce the possibility of the contact of the safety plug rusting in a humid environment, and solve the problem of functional failure of the safety socket due to rust in the prior art.

[0024] Secondly, the seal arranged between the cover and the base can further enhance the waterproofness and sealing performance of the present application. By arranging the seal into a ring shape and sleeved on the reduced diameter portion, the clamping portion can limit the seal in the vertical direction, thereby reducing the occurrence of misalignment of the seal as the cover moves.

[0025] Furthermore, by opening a positioning groove on the seal and providing a positioning portion extending into the sealing groove on the reduced diameter portion of the base, a limiting structure of the base for the seal is formed, which can serve as a basis for judging whether the seal is installed in place during the installation process, thereby achieving the purpose of simplifying the installation process.

[0026] In addition, by setting the base to a three-part structure consisting of a shell, a terminal and a limit frame, the terminal plays a role in fixing and conducting the low-voltage wiring harness, the shell plays a role in limiting and protecting the terminal, and the mounting frame can cooperate with the shell to limit the terminal, while being able to improve the overall tensile structural strength of the base and improve the bearing capacity of the present application along the axis of the low-voltage wiring harness. By providing a connector containing at least some flexible material between the base and the cover, the ease of use of the present application can be increased, and the cover can be prevented from being lost during use. By providing a mounting ring structure on the shell, the base can be conveniently fixed somewhere inside the vehicle, reducing the shaking of the fuse socket that may occur during the driving of the vehicle.

[0027] In addition, the utility model also proposes a vehicle provided with the low-voltage wiring harness fuse socket mentioned above.

[0028] The vehicle described in the utility model has the same beneficial effects as the low-voltage wiring harness fuse socket described above relative to the prior art, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0030] Figure 1 This is a schematic diagram of the structure of a low-voltage wiring harness fuse socket in an embodiment of the present application;

[0031] Figure 2 for Figure 1 A longitudinal cross-sectional view of

[0032] Figure 3 This is a schematic diagram of the exploded structure of the low-voltage wiring harness fuse socket in the embodiment of the present application;

[0033] Figure 4 This is a schematic diagram of the cross-sectional structure of the base in the embodiment of the present application;

[0034] Figure 5 Schematic diagram of the cross-sectional structure of the cover member in the embodiment of the present application.

[0035] Description of reference numerals:

[0036] 1. Low voltage wiring harness; 101. Terminal;

[0037] 2. Base;

[0038] 201, clamping part; 202, positioning part; 203, housing; 2031, mounting ring; 204, terminal; 205, limiting frame; 206, cavity; 207, reduced diameter part;

[0039] 3. Insurance plug;

[0040] 4. Covering piece; 401. Give way slot;

[0041] 5. Sealing element; 501. Positioning groove;

[0042] 6. Connectors. DETAILED DESCRIPTION

[0043] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0044] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0045] Taking the low-voltage wiring harness safety socket and vehicle described in the utility model as an example, the directional words such as "up, down, left, right, front, and back" used in the embodiment are defined based on the up and down direction (also known as the height direction, or the Z direction of the whole vehicle), the left and right direction (also known as the width direction, or the Y direction of the whole vehicle), and the front and rear direction (also known as the length direction, or the X direction of the whole vehicle). "Inside and outside" are defined based on the contour of the corresponding parts. For example, "inside" and "outside" are defined based on the contour of the vehicle, and the side of the vehicle contour close to the middle of the vehicle is "inside", and the opposite is "outside".

[0046] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0047] The following will refer to the attached Figure 1 To Attachment Figure 4 The utility model is described in detail in conjunction with the embodiments.

[0048] Embodiment 1

[0049] This embodiment relates to a low-voltage wiring harness safety socket. This is a safety socket for overload protection of a single low-voltage wiring harness on a vehicle. When the functions of the vehicle are expanded and the number of low-voltage wiring harnesses required in the vehicle increases, the low-voltage wiring harness safety socket of this application can be installed on a single low-voltage wiring harness to meet the functional requirements of overload protection without redesigning, opening a mold and manufacturing the existing fuse box of the vehicle.

[0050] Since the installation position of the low-voltage wiring harness insurance socket in the present application is not limited by the space of the vehicle fuse box, its installation and replacement are easier. However, due to the lack of protection of the fuse box, the working environment of the insurance plug installed on the insurance socket is usually more severe. The low-voltage wiring harness insurance socket in the present application protects the internal components by adopting an external structure with good sealing and waterproof structure, so as to achieve the purpose of slowing down the rusting of contacts and extending the service life, which is conducive to avoiding the functional failure of the insurance socket.

[0051] In terms of overall structure, refer to Figure 1 , Figure 2 and Figure 3 The low-voltage wiring harness insurance socket of this embodiment includes a base 2, an insurance plug 3 and a cover 4. The two ends of the base 2 are electrically connected to the two ends of the low-voltage wiring harness 1. The insurance plug 3 is inserted into the base 2 and electrically connected to the low-voltage wiring harness 1 through the base 2. When the load of the low-voltage wiring harness 1 exceeds a preset value, the insurance plug 3 will fuse, thereby realizing the overload protection function of the low-voltage wiring harness 1. The cover 4 is buckled on the base 2, and the cover 4 and the base 2 together form a waterproof seal for the insurance plug 3.

[0052] As configured above, when the working environment of the fuse socket is relatively humid, the base 2 and the cover 4 buckled on the base 2 can slow down the penetration of humid air or liquid into the base 2, and slow down the rusting speed of the contacts of the fuse plug 3 inserted in the base 2, thereby solving the problem in the prior art of poor contact or even failure of the overload protection function due to rusting of the contacts in a humid environment.

[0053] Based on the above design concept, specifically, in this embodiment, refer to Figure 2 , Figure 3 and Figure 4 The base 2 in the present application includes a housing 203 and a terminal 204. The terminal 204 is arranged to be two symmetrically distributed about the geometric center of the housing 203. The terminal 204 is embedded in the housing 203.

[0054] The housing 203 is a hollow structure made of insulating material, and a cavity 206 for accommodating the pins of the insurance plug 3 and the terminal 204 is provided inside the housing 203. The cavity 206 is configured to have a shape in which its inner wall is closely fitted to the outer surface of the terminal 204 and the insurance plug 3, and its specific shape is determined by the shape of the terminal 204 and the insurance plug 3. The cavity 206 is formed in the middle of the housing 203 and has an opening at the top for inserting the insurance plug 3. The cover 4 is buckled on the opening at the top of the cavity 206. A mounting ring 2031 is provided at the bottom of the housing 203. The mounting ring 2031 can be configured as a ring-shaped structure integrally formed at the bottom of the housing 203. In the embodiment of the present application, the cross-section of the mounting ring 2031 is an isosceles trapezoid. The mounting ring 2031 can also be configured into other shapes that can be conveniently fixed to the vehicle installation position according to actual installation requirements.

[0055] The terminal 204 can be constructed in an "L" shape. One end of the terminal 204 is fixedly arranged with the terminal 101 of the low-voltage wiring harness 1 and forms an electrical connection. The other end of the terminal 204 is sleeved on a pin of the fuse plug 3. In order to achieve good contact between the terminal 204 and the low-voltage wiring harness 1, the terminal 204 is provided with a bent portion at one end close to the low-voltage wiring harness 1, which is bent and fits on the outer surface of the wire portion of the low-voltage wiring harness 1. The bent portions are arranged to be evenly distributed along the axial direction of the low-voltage wiring harness 1.

[0056] As configured above, the current of the low-voltage wiring harness 1 is conducted to one pin of the fuse plug 3 via the terminal 101 and the terminal 204 at one end of the housing 203, and flows from the pin into the fuse plug 3. Then, the current flows out from the other pin of the fuse plug 3, and is conducted to the other terminal 101 via the terminal 204 at the other end of the housing 203, thereby achieving the conduction of the current. When the load of the low-voltage wiring harness 1 exceeds the preset value, the fuse plug 3 is fused, realizing the overload protection function of the low-voltage wiring harness 1 of the present application.

[0057] Reference Figure 2 , Figure 3 and Figure 4 For the purpose of improving the tensile strength and bearing capacity, in this embodiment, the base 2 also includes a limit frame 205. The limit frame 205 can be made of a rigid insulating material. The limit frame 205 is embedded in the cavity 206, and the outer surface of the limit frame 205 abuts against the inner wall of the cavity 206. Both terminals 204 are snapped into the limit frame 205 and are symmetrically distributed on the left and right sides of the limit frame 205. When the load along the axial direction of the low-voltage wiring harness 1 acts on the overall structure of the present application, the pulling force will be transferred from the terminal 204 to the limit frame 205. The relative position of the terminal 204 will remain unchanged due to the limiting effect of the limit frame 205, and the base 2 also has higher structural strength and tensile resistance due to the presence of the limit frame 205.

[0058] In order to slow down the rusting of the contact of the insurance plug 3, refer to Figure 1 , Figure 2 and Figure 3 , the embodiment of the present application also includes a cover 4 buckled on the base 2. The cover 4 can be constructed as a cap-shaped cover covering the outer side of the portion of the insurance plug 3 exposed outside the base 2. The cover 4 can be made of the same insulating material as the base 2. The outer surface of the cover 4 has a plurality of transverse grooves arranged in the horizontal direction. The transverse grooves arranged on the surface of the cover 4 can increase the roughness of the surface of the cover 4 and improve the contact friction of the surface of the cover 4, thereby facilitating the opening and closing of the cover 4. The cover 4 cooperates with the base 2 to protect the insurance plug 3.

[0059] For the purpose of further improving the sealing and waterproof properties of this application, refer to Figure 2 , Figure 3 and Figure 4 The part of the base 2 covered by the cover 4 in the present application extends toward the inner wall of the cover 4 to form a clamping portion 201. The clamping portion 201 can be configured as a ring arranged along the circumference of the inner wall of the cover 4. The clamping portion 201 is clamped and matched with the inner wall of the cover 4 to prevent the penetration of humid air and liquid.

[0060] Reference Figure 2 and Figure 5 The inner wall of the cover 4 is provided with a clearance groove 401, the position of the clearance groove 401 corresponds to the clamping part 201, and the opening shape of the clearance groove 401 is set to be annular to fit the outer surface of the clamping part 201. By extending the clamping part 201 into the clearance groove 401, on the one hand, the tightness of the cover 4 after buckling can be increased, and on the other hand, the cross-sectional shape of the joint between the clamping part 201 and the side wall of the cover 4 can be distributed in a "J" shape, so that moist air or liquid is not easy to leak into the inside of the base 2.

[0061] It should be noted that, in general, in order to reduce the difficulty of processing and production costs, the cross-sectional shape of the clamping portion 201 is usually set to a rectangle to meet the conventional waterproof and sealing requirements. However, due to the opening of the clearance groove 401, in order to facilitate the clamping portion 201 to smoothly escape from the clearance groove 401, the cross-sectional shape of the clamping portion 201 can be constructed as an isosceles trapezoid with an inclined surface by means of edge chamfering or injection molding. The inclined surface of the clamping portion 201 plays a guiding role in the process of the clamping portion 201 being inserted into the clearance groove 401 or escaping from the clearance groove 401, which can improve the smoothness of the cover 4 during opening or closing, so that the present application has a better user experience.

[0062] Reference Figure 2 , Figure 3 and Figure 4 In order to further optimize the sealing and waterproof properties of the present application, a sealing member 5 is further provided between the cover 4 and the base 2. In the present embodiment, the sealing member 5 can be provided in a ring shape that fits the inner wall of the cover 4. The sealing member 5 can be made of a flexible insulating material. A reduced diameter portion 207 is formed on the top of the shell 203, and the clamping portion 201 is provided on the top of the reduced diameter portion 207, and the projection of the reduced diameter portion 207 to the top surface of the shell 203 completely falls within the projection range of the clamping portion 201 to the top surface of the shell 203. The sealing member 5 is sleeved on the outer side of the reduced diameter portion 207, so that the clamping portion 201 can limit the sealing member 5 in the vertical direction, which is conducive to avoiding the phenomenon that the sealing member 5 is misaligned under the action of friction as the cover 4 is opened or closed.

[0063] Reference Figure 2 , Figure 3 and Figure 4 In order to simplify the assembly process and improve the stability of the seal 5, a positioning groove 501 is provided on one side of the seal 5 close to the base 2. The position on the reduced diameter portion 207 corresponding to the seal 5 extends into the positioning groove 501 to form a positioning portion 202. The positioning portion 202 is arranged to be annular and distributed along the circumference of the positioning groove 501. In the present embodiment, there are two positioning portions 202, and the cross-sectional shape of the positioning portion 202 can be a protruding half-waist shape. Whether the positioning portion 202 on the base 2 is snapped into the positioning groove 501 on the seal 5 can be used as a basis for judging whether the seal 5 is installed in place, thereby simplifying the installation process of the seal 5.

[0064] In order to make the present application easy to use and avoid the cover 4 from being lost after opening, in the embodiment of the present application, Figure 1 , Figure 2 and Figure 3 A connector 6 is provided between the cover 4 and the base 2. The connector 6 is at least partially made of a flexible insulating material. By setting at least part of the connector 6 to be a flexible material, the cover 4 can be easily opened.

[0065] Embodiment 2

[0066] This embodiment relates to a vehicle, including the low-voltage wiring harness fuse socket in the first embodiment. The vehicle in this embodiment adopts the low-voltage wiring harness fuse socket as described in the first embodiment, which not only can save the cost of research and development, mold opening and production of new fuse boxes, but also has good waterproofness and sealing. Under the condition that the working environment is inferior to the fuse in the fuse box, it can still slow down the rusting speed of the contacts in the fuse socket, and reduce the possibility of functional failure due to rust or poor contact.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A low-voltage wiring harness safety socket, used for overload protection of a vehicle low-voltage wiring harness (1), characterized in that: include: A base (2), wherein an open cavity (206) is formed in the middle of the base (2); Two sections of the low-voltage wire harness (1) are inserted into the base (2) from the outside of the base (2), and the end (101) of each low-voltage wire harness (1) is exposed in the cavity (206); A safety plug (3), the safety plug (3) being inserted into the cavity (206) from an open portion of the cavity (206) and being electrically connected between the two ends (101); A cover member (4), the cover member (4) being buckled on the base (2) from above the base (2) along the axial direction of the cavity (206); The portion of the base (2) that is buckled on the inner side by the cover (4) is provided with a snap-fit ​​portion (201) that is radially protruding outward along the cavity (206); when the cover (4) is buckled on the base (2), the snap-fit ​​portion (201) and the inner wall of the cover (4) are snap-fitted.

2. The low-voltage wiring harness fuse socket according to claim 1, characterized in that: The base (2) is constructed in a stepped shape formed by the fixed connection of the shell (203) and the reduced diameter portion (207) located on the top of the shell (203), and the clamping portion (201) is formed on the reduced diameter portion (207).

3. The low-voltage wiring harness fuse socket according to claim 2, characterized in that: A sealing member (5) is disposed in contact with the base (2) and the covering member (4).

4. The low-voltage wiring harness fuse socket according to claim 3, characterized in that: The sealing member (5) is arranged in a ring shape that fits the circumference of the inner wall of the covering member (4), and the sealing member (5) is sleeved on the outer side of the reduced diameter portion (207).

5. The low-voltage wiring harness fuse socket according to claim 4, characterized in that: A positioning groove (501) is formed on one side of the sealing member (5) that is in contact with the base (2); the portion of the reduced diameter portion (207) that is in contact with the sealing member (5) extends toward the positioning groove (501) to form a positioning portion (202); and the positioning portion (202) is snap-fitted into the positioning groove (501).

6. The low-voltage wiring harness fuse socket according to claim 2, characterized in that: The base (2) also includes: The terminal (204) is arranged as two terminals symmetrically about the center of the housing (203), one end of the terminal (204) is electrically connected to the terminal (101), and the other end is sleeved on a pin of the fuse plug (3) to form an electrical connection.

7. The low-voltage wiring harness fuse socket according to claim 6, characterized in that: The base (2) also includes: A limiting frame (205), one end of the terminal (204) electrically connected to the low-voltage wiring harness (1) is embedded in the limiting frame (205), and the limiting frame (205) is embedded in the housing (203).

8. The low-voltage wiring harness fuse socket according to claim 6, characterized in that: A mounting ring (2031) is provided on the side of the housing (203) away from the covering member (4).

9. The low-voltage wiring harness fuse socket according to claim 1, characterized in that: A connecting piece (6) is provided between the covering piece (4) and the base (2), and at least a portion of the connecting piece (6) is made of a flexible material.

10. A vehicle, characterized in that: It comprises a low-voltage wiring harness fuse socket as described in any one of claims 1-9.

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