High-leakproofness fuse access cable suitable for ultra-low resistance loop

Abstract

The invention relates to the field of cables, in particular to a high-leakproofness fuse access cable suitable for an ultra-low resistance loop, which comprises a wire harness and a fuse holder, the middle part of the wire harness is connected by the fuse holder, the upper end of the fuse holder is provided with a socket, one side of the fuse holder is connected with a sealing cover, the sealing cover is used for sealing the socket, and the fuse holder is provided with a fuse wire. The sealing cover is movably sleeved with a waterproof sleeve, and the waterproof sleeve is used for sealing a gap formed after the sealing cover is matched with the socket. The fuse seat is arranged to seal the joint of the fuse and the wire harness to avoid invasion of water vapor or oil drops, the fuse is used as a consumable and the socket of the fuse seat is used as an insertion port of the fuse, sealing of the sealing cover and the socket is particularly important, and in order to avoid invasion of the water vapor or oil drops into a gap formed after the sealing cover and the socket are in butt joint. The arrangement of the waterproof sleeve is used for blocking, so that the waterproof and oil-proof performance is improved, and the normal work of the fuse in an ultra-low resistance loop is ensured.

Description

[0001] This divisional application is based on the mother patent application with the filing date of December 30, 2021, application number 2021116473715, and the title of "A fuse access cable applicable to ultra-low resistance circuits". Technical Field

[0002] The present invention relates to the field of cables, and particularly to a highly sealed fuse access cable applicable to ultra-low resistance circuits. Background Art

[0003] Ultra-low resistance circuits are often applied in occasions such as current protection and power management, and are mostly set in cooperation with fuses. Taking the insurance device in a vehicle as an example, the fuse on its cable is simply inserted into the fuse socket. Although it is convenient for customers to disassemble and replace, there are also relatively large hidden dangers. For example, the fuse is directly exposed outside and is close to other materials. During the use of the vehicle, in case of abnormal situations such as water leakage or oil leakage, if water or oil drops onto the pins of the fuse or the metal part of the fuse socket, it will cause oxidation of the fuse pins, shorten the service life, and in severe cases, it may cause electric leakage, resulting in damage to other products or triggering safety accidents. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a highly sealed fuse access cable applicable to ultra-low resistance circuits that can prevent water and oil.

[0005] To solve the above technical problem, the technical solution adopted by the present invention is: a highly sealed fuse access cable applicable to ultra-low resistance circuits, including a wire harness and a fuse socket. The middle part of the wire harness is connected by the fuse socket. An insertion port is provided at the upper end of the fuse socket. A cover is connected to one side of the fuse socket, and the cover is used to close the insertion port. A waterproof sleeve is movably sleeved on the cover, and the waterproof sleeve is used to close the gap after the cover and the insertion port are matched.

[0006] The beneficial effect of the present invention is that by setting the fuse socket to seal the connection between the fuse and the wire harness to prevent the intrusion of water vapor or oil droplets. Since the fuse is a consumable and the insertion port of the fuse socket is the insertion port of the fuse, the closure of the cover and the insertion port is also particularly important. In order to prevent the gap after the cover and the insertion port are docked from being invaded by water vapor or oil droplets, a waterproof sleeve is provided to block it, so as to improve the water and oil prevention performance and ensure the normal operation of the fuse in the ultra-low resistance circuit. Description of the Drawings

[0007] Figure 1 It is a schematic structural diagram of the highly sealed fuse access cable applicable to ultra-low resistance circuits in the specific embodiment of the present invention; Figure 2Schematic diagram of the structure when the fuse holder and the cover of the fuse access cable applicable to an ultra-low resistance circuit with high tightness are separated in the specific embodiment of the present invention; Figure 3 Top view of the upper end of the fuse holder of the fuse access cable applicable to an ultra-low resistance circuit with high tightness in the specific embodiment of the present invention; Figure 4 Schematic diagram of the structure of the waterproof sleeve of the fuse access cable applicable to an ultra-low resistance circuit with high tightness in the specific embodiment of the present invention; Figure 5 Side view of the fuse holder and the cover of the fuse access cable applicable to an ultra-low resistance circuit with high tightness after being fitted together in the specific embodiment of the present invention.

[0008] Label description: 1. Wiring harness; 2. Fuse holder; 21. Socket; 22. Receptacle; 23. First slot; 24. Anti-slip pattern; 3. Cover; 31. Slide groove; 32. Second slot; 4. Waterproof sleeve; 41. First connecting part; 411. First insertion block; 42. Second connecting part; 421. Second insertion block; 43. Socket part; 5. Connecting band. Specific embodiment

[0009] To describe in detail the technical content, achieved objectives and effects of the present invention, the following is described in conjunction with the embodiments and with reference to the drawings.

[0010] Please refer to Figures 1 to 5 , an ultra-low resistance circuit applicable fuse access cable with high tightness, including a wiring harness 1 and a fuse holder 2. The middle part of the wiring harness 1 is connected by the fuse holder 2. An upper end of the fuse holder 2 is provided with a socket 21. A cover 3 is connected to one side of the fuse holder 2. The cover 3 is used to close the socket 21. A waterproof sleeve 4 is movably sleeved on the cover 3. The waterproof sleeve 4 is used to close the gap after the cover 3 and the socket 21 are fitted together. As can be seen from the above description, the beneficial effect of the present invention is that by providing the fuse holder 2 to enclose the connection between the fuse and the wiring harness 1 to prevent the intrusion of water vapor or oil droplets. Since the fuse is a consumable item and the socket 21 of the fuse holder 2 is the insertion port for the blade fuse, the closure of the cover 3 and the socket 21 is also particularly important. In order to prevent the gap after the cover 3 and the socket 21 are docked from being invaded by water vapor or oil droplets, the waterproof sleeve 4 is provided to block it, so as to improve the waterproof and oil-proof performance and ensure the normal operation of the fuse in the ultra-low resistance circuit. Further, a socket 22 protrudes from the edge of the jack. The lower end of the cover 3 has an opening that is plugged and matched with the socket 22. A sliding groove 31 is provided on the cover 3, and the sliding groove 31 extends from the upper end to the lower end of the cover 3. The waterproof sleeve 4 is movable along the sliding groove 31. As can be seen from the above description, the cooperation between the cover 3 and the socket 21 is positioned and guided by the socket 22, and the sliding groove 31 serves as the sliding guide for the waterproof sleeve 4.

[0011] Further, the waterproof sleeve 4 includes a first connecting portion 41 parallel to the upper end of the fuse base 2. A first slot 23 is provided corresponding to the first connecting portion 41 at the upper end of the fuse base 2. A first plug 411 is provided on the first connecting portion 41 of the waterproof sleeve 4 facing the upper end of the fuse base 2, and the first plug 411 is matched with the first slot 23. As can be seen from the above description, after the waterproof sleeve 4 slides from the upper end of the cover 3 along the sliding groove 31 to the lower end of the cover 3, its first connecting portion 41 fits against the upper end of the fuse base 2, and the first plug 411 of the first connecting portion 41 is inserted into the first slot 23. While connecting the waterproof sleeve 4 and the fuse base 2, the waterproof effect is enhanced, and the first plug 411 serves as a water-blocking component for the gap between the first connecting portion 41 and the fuse base 2.

[0012] Further, the waterproof sleeve 4 includes a second connecting portion 42 that is parallel and fitted to the side surface of the cover 3. A second plug 421 is provided on the second connecting portion 42 facing the side surface of the cover 3. A second slot 32 parallel to the first slot 23 is provided at one end of the side surface of the cover 3 close to the upper end of the fuse base 2, and the second plug 421 is matched with the second slot 32.

[0013] As can be seen from the above description, the setting of the second connecting portion 42 enables the first connecting portion 41 and the second connecting portion 42 to form an approximately L-shaped structure. The horizontal part is the first connecting portion 41, and the vertical part is the second connecting portion 42. The second connecting portion 42 is parallel to the side surface of the cover 3. After the waterproof sleeve 4 slides from the upper end to the lower end of the cover 3, the first connecting portion 41 is plugged and matched with the first slot 23. At the same time, the second plug 421 of the second connecting portion 42 faces the second slot 32 on the side surface of the cover 3. The user presses the second connecting portion 42 towards the side surface of the cover 3 so that the second plug 421 is matched with the second slot 32. Through the cooperation of the first socket 21 and the first slot 23 and the cooperation of the second plug 421 and the second slot 32, the cooperation among the waterproof sleeve 4, the fuse base 2, and the cover 3 is strengthened. At the same time, the first plug 411 serves as a water-blocking component for the gap between the first connecting portion 41 of the waterproof sleeve 4 and the upper end of the fuse base 2, and the second plug 421 serves as a water-blocking component for the gap between the second connecting portion 42 of the waterproof sleeve 4 and the side surface of the cover 3, jointly achieving waterproof and oil-proof at multiple positions.

[0014] Further, it further includes a connecting belt 5. One end of the connecting belt 5 is connected to the side where the fuse base 2 is connected to the wiring harness 1, and the other end of the connecting belt 5 is connected to the side surface of an adjacent cover 3. The waterproof sleeve 4 includes a sleeving portion 43. The first connecting portion 41 and the second connecting portion 42 are connected to form a connecting loop. The side of the connecting loop close to the connecting belt 5 is connected by the sleeving portion 43, and the connecting belt 5 is bent and sleeved in the sleeving portion 43.

[0015] As can be seen from the above description, the connecting belt 5 is a component for connecting the cover 3 and the fuse base 2. In the actual injection molding process, the connecting belt 5, the cover 3, and the fuse base 2 are integrally formed; however, a certain length will be left for the connecting belt 5 after the cover 3 and the fuse base 2 are fitted together, resulting in that when repairing other components, it is easy to pull, causing the connecting belt 5 to drive the cover 3 to separate from the fuse base 2; through the setting of the sleeving portion 43 of the waterproof sleeve 4, when the waterproof sleeve 4 slides from the upper end to the lower end of the cover 3, the user can bend the connecting belt 5 and pass it through the sleeving portion 43, and the sleeving portion 43 fixes the connecting belt 5 to prevent it from being pulled.

[0016] Further, the cover 3 includes a front side surface, a rear side surface, a left side surface, and a right side surface. The connecting belt 5 is connected to the front side surface of the cover 3. The sliding groove 31 is provided on the rear side surface of the cover 3, and second slots 32 are correspondingly provided on the left side surface and the right side surface for the second insertion blocks 421.

[0017] Further, the side of the cover 3 close to the connecting belt 5 is an inclined slope, and the inclined slope faces the side of the cover 3 away from the fuse base 2.

[0018] As can be seen from the above description, through the setting of the inclined slope on the side of the cover 3 close to the connecting belt 5, the cover 3 as a whole has a structure similar to a right trapezoid. When the waterproof sleeve 4 slides, the distance between the inclined slope and the sleeving portion 43 will change. The formation of the inclined slope on the cover 3 makes the upper end of the cover 3 smaller than the lower end of the cover 3. When the sleeving portion 43 slides, the original gap between the sleeving portion 43 and the upper end of the cover 3 decreases with the sliding. In this way, the connecting belt 5 can quickly penetrate into the gap between the sleeving portion 43 and the side surface of the cover 3 before the sleeving portion 43 slides towards the lower end of the cover 3. As the sleeving portion 43 moves, this gap decreases, and relatively, the connecting belt 5 is pressed by the sleeving portion 43 against the side surface of the cover 3.

[0019] Further, the distance between the end of the socket 22 close to the cover 3 and the upper end of the fuse base 2 is greater than the distance between the second slot 32 and the upper end of the fuse.

[0020] As described above, when the connecting belt 5 is pulled, taking the example that the connecting belt 5 is pulled in the length direction of the wire harness 1, the acting force when the connecting belt 5 is pulled is transmitted from the waterproof sleeve 4 to the cover 3, causing the cover 3 to have a tendency to be pulled laterally. However, since the distance between the socket 22 and the upper end of the fuse base 2 is greater than the distance between the second slot 32 and the upper end of the fuse base 2, that is, when the lateral acting force on the waterproof sleeve 4 acts on the cover 3, the lateral acting force will be transmitted to the side of the socket 22, and the socket 22 acts as a barrier to prevent the cover 3 from detaching from the fuse base 2 under the lateral acting force.

[0021] Further, anti-slip grooves 24 are provided on the side surface of the fuse base 2.

[0022] As described above, through the anti-slip grooves 24 provided on the side surface of the fuse base 2, it is convenient for the user to grasp the fuse base 2 to release the cooperation between the cover 3 and the socket 21 and replace the fuse.

[0023] Referring to Figures 1 to 5 , Embodiment 1 of the present invention is as follows: Application scenario of the present invention: Taking the example of the fuse wire in the car being connected to the cable, when the vehicle is in use, abnormal situations such as water leakage and oil leakage may occur. If it penetrates into the fuse, it will affect its normal use. The present invention provides a fuse base 2 and a cover 3, and the waterproof sleeve 4 strengthens the waterproofing of the gap between the two to ensure the waterproofing and oil-proofing of the fuse, extend the service life, and ensure the use safety.

[0024] As Figures 1 to 5 shown, the highly airtight fuse access cable applicable to the ultra-low resistance circuit of this embodiment includes a wire harness 1, a fuse base 2, a cover 3, and a connecting belt 5.

[0025] As Figure 1 shown, the middle part of the wire harness 1 is connected by the fuse base 2. The upper end of the fuse base 2 is provided with a socket 21. One side of the fuse base 2 is connected with a cover 3. The cover 3 is used to close the socket 21. A waterproof sleeve 4 is movably sleeved on the cover 3. The waterproof sleeve 4 is used to close the gap after the cover 3 and the socket 21 are matched.

[0026] As Figure 2 and Figure 3 shown, a socket 22 protrudes from the edge of the socket. The lower end of the cover 3 has an opening that is inserted and matched with the socket 22. A sliding groove 31 is provided on the cover 3. The sliding groove 31 extends from the upper end of the cover 3 to the lower end of the cover 3. The waterproof sleeve 4 is movable along the sliding groove 31.

[0027] As Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the waterproof sleeve 4 includes a first connecting portion 41 parallel to the upper end of the fuse base 2. A first slot 23 is provided at the upper end of the fuse base 2 corresponding to the first connecting portion 41. A first insertion block 411 is provided on the first connecting portion 41 of the waterproof sleeve 4 facing the upper end of the fuse base 2. The first insertion block 411 cooperates with the first slot 23.

[0028] As Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the waterproof sleeve 4 includes a second connecting portion 42 parallel and attached to the side surface of the cover 3. A second insertion block 421 is provided on the second connecting portion 42 facing the side surface of the cover 3. A second slot 32 parallel to the first slot 23 is provided at one end of the side surface of the cover 3 near the upper end of the fuse base 2. The second insertion block 421 cooperates with the second slot 32.

[0029] As Figure 1 and Figure 2 As shown, one end of the connecting band 5 is connected to the side of the fuse base 2 where it is connected to the wire harness 1, and the other end of the connecting band 5 is connected to the side surface of the adjacent cover 3. The waterproof sleeve 4 includes a sleeving portion 43. The first connecting portion 41 and the second connecting portion 42 are connected to form a connecting loop. One side of the connecting loop close to the connecting band 5 is connected by the sleeving portion 43. The connecting band 5 is bent and sleeved in the sleeving portion 43.

[0030] The cover 3 includes a front side surface, a rear side surface, a left side surface and a right side surface. The connecting band 5 is connected to the front side surface of the cover 3. The sliding groove 31 is provided on the rear side surface of the cover 3. Second slots 32 corresponding to the second insertion blocks 421 are provided on the left side surface and the right side surface.

[0031] As Figure 4 As shown, specifically, the waterproof sleeve 4 is formed by connecting a sliding portion, a sleeving portion 43 and a connecting loop. The connecting loop is composed of a first connecting portion 41 and a second connecting portion 42. The connecting loop corresponds to the left and right side surfaces of the cover 3. The sliding portion corresponds to the rear side surface of the cover 3 and extends a slider towards the sliding groove 31. The sleeving portion 43 corresponds to the front side surface of the cover 3.

[0032] As Figure 1 and Figure 2 As shown, the side of the cover 3 close to the connecting band 5 is an inclined slope, and the inclined slope faces the side of the cover 3 away from the fuse base 2.

[0033] Working principle of the present invention: When the cover 3 is fitted with the fuse base 2, the opening of the cover 3 is inserted corresponding to the socket 22 at the upper end of the fuse base 2. Then, the waterproof sleeve 4 originally located at the upper end of the cover 3 is moved towards the fuse base 2. The waterproof sleeve 4 moves along the sliding groove 31 on the rear side of the cover 3 until the first connecting portion 41 of the waterproof sleeve 4 abuts against the upper end of the fuse base 2. At this time, by pressing the first connecting portion 41, the first insertion block 411 of the first connecting portion 41 is inserted into the first slot 23 on the fuse base 2. At the same time, the second connecting portion 42 of the waterproof sleeve 4 is also opposite to the second slots 32 on the left and right sides of the cover 3. By pressing the second connecting portion 42, the second insertion block 421 of the second connecting portion 42 is inserted into the second slots 32 on the cover 3.

[0034] The above completes the connection of the waterproof sleeve 4, the cover 3 and the fuse base 2. At the same time, the gap between the cover 3 and the fuse base 2 is sealed by the waterproof sleeve 4. The first stop block serves as a water-blocking component for the gap between the first connecting portion 41 of the waterproof sleeve 4 and the upper end of the fuse base 2, and the second stop block serves as a water-blocking component for the gap between the second connecting portion 42 of the waterproof sleeve 4 and the cover 3, achieving waterproof and oil-proof at multiple positions.

[0035] At the same time, before the waterproof sleeve 4 moves, the connecting belt 5 can be bent and passed through the socket portion 43 of the waterproof sleeve 4 to avoid the connecting belt 5 being pulled. Through the inclined setting of the front side of the cover 3 corresponding to the socket portion 43, the distance between the socket portion 43 and the front side of the cover 3 can be reduced as the waterproof sleeve 4 slides, thereby pressing the socket portion 43 against the connecting belt 5 and fixing the connecting belt 5.

[0036] In summary, the present invention provides a fuse access cable with high tightness applicable to an ultra-low resistance circuit. By providing a fuse base, the connection between the fuse and the wire harness is sealed to prevent the intrusion of water vapor or oil droplets. Since the fuse is a consumable item and the socket of the fuse base is the insertion port of the fuse, the sealing of the cover and the socket is particularly important. To prevent the gap after the cover and the socket are docked from being invaded by water vapor or oil droplets, a waterproof sleeve is provided to block it, so as to improve the waterproof and oil-proof performance and ensure the normal operation of the fuse in the ultra-low resistance circuit.

[0037] The above are only embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent transformations made using the content of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. A fuse access cable with high tightness applicable to an ultra-low resistance circuit, characterized in that, It includes a wire harness and a fuse holder. The middle part of the wire harness is connected by the fuse holder. A socket is provided at the upper end of the fuse holder. A cover is connected to one side of the fuse holder. A waterproof sleeve is movably sleeved on the cover. A socket protrudes from the edge of the socket. The lower end of the cover has an opening that is inserted and matched with the socket. A chute is provided on the cover. The chute extends from the upper end of the cover to the lower end of the cover. The waterproof sleeve is movable along the chute. The waterproof sleeve is formed by connecting a sliding part, a sleeved part and a connecting ring. The connecting ring is composed of a first connecting part and a second connecting part. The connecting ring corresponds to the left and right side faces of the cover. The sliding part corresponds to the rear side face of the cover and extends a slider towards the chute.

2. The fuse access cable with high tightness applicable to an ultra-low resistance circuit according to claim 1, characterized in that, It further includes a connecting band. One end of the connecting band is connected to the side where the fuse holder is connected to the wire harness. The other end of the connecting band is connected to the side face of an adjacent cover. The connecting band is bent and sleeved in the sleeved part.

3. The fuse access cable with high tightness applicable to an ultra-low resistance circuit according to claim 2, characterized in that, The first connecting part is parallel to the upper end of the fuse holder. The second connecting part is parallel and attached to the side face of the cover. The first connecting part is inserted into the upper end of the fuse holder. The second connecting part is inserted into the side face of the cover.

4. The fuse access cable with high tightness applicable to an ultra-low resistance circuit according to claim 3, characterized in that, A first slot is provided at the upper end of the fuse holder corresponding to the first connecting part. A first plug is provided at the first connecting part of the waterproof sleeve facing the upper end of the fuse holder. The first plug is matched with the first slot. The second connecting part is provided with a second plug facing the side face of the cover. A second slot parallel to the first slot is provided at one end of the side face of the cover close to the upper end of the fuse holder. The second plug is matched with the second slot.

5. The fuse access cable with high tightness applicable to an ultra-low resistance circuit according to claim 4, characterized in that, The cover includes a front side face, a rear side face, a left side face and a right side face. The connecting band is connected to the front side face of the cover. The chute is provided on the rear side face of the cover. Second slots are provided on the left side face and the right side face corresponding to the second plug.

6. The fuse access cable with high tightness applicable to an ultra-low resistance circuit according to claim 2, characterized in that, The side of the cover close to the connecting band is an inclined slope. The inclined slope faces the side of the cover away from the fuse holder.

7. The fuse access cable with high tightness applicable to an ultra-low resistance circuit according to claim 4, characterized in that, The distance between the end of the socket close to the cover and the upper end of the fuse holder is greater than the distance between the second slot and the upper end of the fuse.

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