Automobile high-voltage wire passing protection device and installation method thereof

Abstract

The application discloses a kind of automobile high-voltage line wire protection device and its installation method, it is related to wire protection device field, the device includes metal base, elastic sealing element, metal connecting piece, wire harness shell and nut;The metal base includes base body and stud, the stud is fixedly connected on the base body;The stud passes through elastic sealing element, metal connecting piece and protection shell in sequence, and is fixedly connected by nut.The advantages of the present application are that the device has good sealing effect and installation strength, and the wire harness shell can constrain the wire harness after the via hole.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wire protection devices, in particular to a high-voltage wire protection device for an automobile and a mounting method thereof. BACKGROUND

[0002] Based on the arrangement of high-voltage battery packs, on-board chargers, motor controllers, drive motors, and DC charging ports, high-voltage wire harnesses need to pass through the vehicle body sheet metal from the rear floor area of the chassis to connect electrical components inside and outside the cab. When the high-voltage wire harness passes through, due to the large size of the wire protection device, a large size hole needs to be opened in the chassis sheet metal. The patent document with publication number CN112636282A discloses an automobile high-voltage wire protection structure, which includes a rubber component, a waterproof sealing ring, a wire harness sleeve, and a vehicle body component. The existing wire protection device cannot guarantee the installation strength and is easy to fall off, affecting the sealing effect; due to the large number of parts such as suspension system beams and stabilizing rods under the chassis, the high-voltage wire harness needs to be well guided and protected after passing through the hole in the chassis. The existing wire protection device cannot guarantee the direction and state of the wire harness after passing through the hole; in addition, due to the heavy weight of the high-voltage wire, during the installation process from the bottom to the top at a high working position, the operator needs to lift the wire harness with multiple people to avoid falling, which is very inconvenient and affects the assembly efficiency. SUMMARY

[0003] The technical problem to be solved by the present application is how to guarantee the installation strength of the wire protection device and improve the sealing effect.

[0004] The present application solves the above technical problems by the following technical means: a high-voltage wire protection device for an automobile, comprising a metal base, an elastic sealing element, a metal connecting element, a wire harness sheath, and a nut; the metal base comprises a base body and a stud, the stud is fixedly connected to the base body; the stud passes through the elastic sealing element, the metal connecting element, and the protection shell in sequence and is fixedly connected by the nut.

[0005] The base body of the device can be fixedly connected to the automobile chassis sheet metal, and the pressure applied by the nut is transmitted to the protection shell, the metal connecting element, and the elastic sealing element in sequence, causing the elastic sealing element to compress and deform, forming a good seal that can effectively prevent water from entering the vehicle; compared with the traditional rubber sleeve wire protection device, the elastic sealing element is arranged between the metal base and the metal connecting element, ensuring the installation strength and avoiding falling off, and the device can be applied to different strength vehicle body sheet metals; the wire harness sheath can constrain the wire harness after passing through the hole.

[0006] Preferably, the elastic sealing element comprises a sealing body, a sealing element first stud through hole, and a sealing element second stud through hole, the two sides of the sealing body are respectively provided with a circular sealing element first stud through hole and an elliptical sealing element second stud through hole.

[0007] The metal connector comprises a connector main body, a connector first stud hole and a connector second stud hole, and the two sides of the connector main body are respectively provided with a circular connector first stud hole and an oval connector second stud hole;

[0008] The wire harness shell comprises a shell body, a mounting groove, a wire groove, a mounting surface, a main positioning hole, an auxiliary positioning hole and a stud locking structure, the shell body is provided with a mounting groove and a wire groove in communication, the mounting surface is fixedly connected to the outer edge of the mounting groove, and the two sides of the mounting surface are respectively provided with a circular main positioning hole and an oval auxiliary positioning hole;

[0009] The sealing element first stud hole, the connector first stud hole and the main positioning hole are used in groups, the sealing element second stud hole, the connector second stud hole and the auxiliary positioning hole are used in groups, the number of studs is the same as the total number of groups, and each group is respectively penetrated by a stud and fixedly connected by a nut.

[0010] The positioning is convenient through the cooperation of the stud and the circular main positioning hole and the oval auxiliary positioning hole.

[0011] Preferably, the auxiliary positioning hole is fixedly connected with a stud locking structure. The stud locking structure can be clamped on the stud during installation, has a drop prevention function, can keep the high-voltage wire harness from falling during installation, and is convenient to assemble.

[0012] Preferably, the elastic sealing element further comprises a guide boss, a mounting boss, a connecting groove and a wire harness sealing sleeve, the upper surface of the sealing body is provided with an upwardly protruding guide boss at the middle position, the lower surface of the sealing body is provided with a downwardly protruding mounting boss at the middle position, the outer wall of the mounting boss is provided with a connecting groove around, and the wire harness sealing sleeve penetrates the guide boss, the sealing body and the mounting boss in sequence and extends below the mounting boss;

[0013] The middle position of the base body is provided with an elastic sealing element through hole, and the guide boss penetrates out above the base body from the elastic sealing element through hole;

[0014] The middle position of the connector main body is provided with a connecting hole, and the metal connector is clamped in the connecting groove and fits with the connecting groove through the connecting hole.

[0015] The guide boss, the sealing body and the mounting boss provide thickness support for the wire harness sealing sleeve, increase the strength of the elastic sealing element, the guide boss can provide guidance during installation to facilitate assembly, and when the metal connector is clamped in the connecting groove, the wire harness sealing sleeve utilizes the elastic contraction of rubber to fix and seal the high-voltage wire or wire harness.

[0016] Preferably, a first sealing ring protruding from the upper surface of the sealing body is provided on the outer periphery of the first stud through hole of the sealing element, a second sealing ring protruding from the upper surface of the sealing body is provided on the outer periphery of the second stud through hole of the sealing element, and a third sealing ring protruding from the upper surface of the sealing body is provided on the outer periphery of the guide boss. The first, second, and third sealing rings deform when the elastic sealing element is compressed, further enhancing the sealing effect.

[0017] Preferably, the wire harness sealing sleeve has a plurality of fourth sealing rings arranged vertically at intervals inside, and the fourth sealing rings protrude around the inner wall of the wire harness sealing sleeve. The fourth sealing rings can enhance the sealing effect on the high-voltage line or high-voltage wire harness.

[0018] Preferably, the metal connector further includes an upper flange and a wire harness sheath interface. The upper flange is formed by folding the outer edge of the connector body upwards, and the upper end of the upper flange has a wire harness sheath interface. A snap-fit ​​structure is provided on the mounting surface corresponding to the position of the wire harness sheath interface. The snap-fit ​​structure can snap onto the wire harness sheath interface, making installation convenient.

[0019] Preferably, a partition is provided in the inner cavity of the cable tray, which divides the inner cavity of the cable tray into two chambers along its width. Multiple sets of cable tie through holes are provided at the bottom of the cable tray, with each set of through holes arranged at the bends or deformation points of the cable tray. Each set of cable tie through holes includes multiple through holes distributed on both sides of the partition. The partition can isolate high-voltage lines or high-voltage wire bundles, preventing multiple strands of high-voltage lines or high-voltage wire bundles from crossing. The cable tie through holes are used for passing cable ties to achieve binding, constraint, and fixation of high-voltage lines or high-voltage wire bundles. This device can precisely control the direction of high-voltage lines or high-voltage wire bundles near the cable outlet and under the chassis, and cover and protect them.

[0020] Preferably, the lowest point of the mounting groove is provided with multiple leakage and heat dissipation holes. These holes serve two purposes: firstly, to allow liquid to drain, preventing liquid accumulation when the vehicle is wading through water, thus avoiding water damage to the high-voltage lines or wiring harnesses; secondly, they can accelerate heat dissipation from the high-voltage lines or wiring harnesses under the disturbance of airflow during driving, speeding up moisture evaporation and providing good airflow and heat dissipation.

[0021] A method for installing a high-voltage line overpass protection device for automobiles, comprising the following steps:

[0022] Step 1: Weld the metal base to the upper surface of the car chassis sheet metal to obtain the car chassis sheet metal assembly.

[0023] Step two, assemble the elastic seal, metal connector, wire harness shell and high-voltage wire or high-voltage wire harness into a wire harness assembly, and the high-voltage wire or high-voltage wire harness is sequentially arranged in the wire harness shell after passing through the elastic seal and the metal connector;

[0024] Step three, the part of the high-voltage wire or high-voltage wire harness above the elastic seal is passed through the automobile chassis panel and the metal base and out above the metal base, the stud is sequentially passed through the elastic seal, the metal connector and the protective shell, then the wire harness assembly is pushed up, finally the nut is connected, and the wire harness shell is fixedly connected with the automobile chassis panel, and the installation of the device is completed.

[0025] The advantages of the present application are:

[0026] 1. The base body of the device can be fixedly connected to the automobile chassis panel, and the pressure applied by the nut is sequentially transmitted to the protective shell, the metal connector and the elastic seal, so that the elastic seal is compressed and deformed, forming a good seal, which can effectively prevent water from entering the vehicle; compared with the traditional rubber sleeve wire passing device, the elastic seal is arranged between the metal base and the metal connector, which ensures the installation strength and avoids falling off, and can be applied to different strength vehicle body panels; the wire harness shell can constrain the wire harness after the hole.

[0027] 2. The stud is positioned and installed by cooperating with the circular main positioning hole and the oval auxiliary positioning hole, and the positioning is convenient.

[0028] 3. The stud locking structure can be clamped on the stud during installation, has a drop prevention function, can keep the high-voltage wire harness from falling off during installation, and is convenient to assemble.

[0029] 4. The device can accurately control the wire harness direction under the chassis near the wire passing port and protect it.

[0030] 5. The device can prevent water accumulation and has good wind guiding and heat dissipation functions. DETAILED DESCRIPTION

[0031] Figure 1 It is an exploded view of the automobile high-voltage wire passing protection device of the embodiment of the present application.

[0032] Figure 2 It is an axonometric view of the metal base of the embodiment of the present application.

[0033] Figure 3 It is a front view of the elastic seal of the embodiment of the present application.

[0034] Figure 4 It is a top view of the elastic seal of the embodiment of the present application.

[0035] Figure 5 It is an axonometric view of the metal connector of the embodiment of the present application.

[0036] Figure 6 The top view schematic diagram of the harness shell of the embodiment of the present application.

[0037] Figure 7 The installation position schematic diagram of the automobile high-voltage wire passing protection device of the embodiment of the present application on the automobile chassis sheet metal.

[0038] Figure 8 The explosion view of the automobile chassis sheet metal assembly of the embodiment of the present application.

[0039] Figure 9 The explosion view of the harness assembly of the embodiment of the present application.

[0040] Figure 10 The cross-sectional schematic diagram of the harness shell of the embodiment of the present application.

[0041] Figure 11 The general assembly schematic diagram of the automobile high-voltage wire passing protection device of the embodiment of the present application.

[0042] Figure 12 The cross-sectional schematic diagram of the automobile high-voltage wire passing protection device of the embodiment of the present application after general assembly.

[0043] Figure 13 The cross-sectional schematic diagram of the interface structure of the metal connecting piece and the harness shell of the embodiment of the present application. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiment of the present application more clear, the technical scheme in the embodiment of the present application will be described clearly and completely below in combination with the embodiment of the present application. Obviously, the described embodiment is a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiment of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0045] As shown in Figure 1 , Figure 8 , Figure 9 , Figure 11 , the embodiment of the present application discloses an automobile high-voltage wire passing protection device, which comprises a metal base 1, an elastic sealing piece 2, a metal connecting piece 3, a harness shell 4 and a nut 6.

[0046] The metal base 1 is welded on the upper surface of an automobile chassis sheet metal 5, and the metal base 1 and the automobile chassis sheet metal 5 are assembled into an automobile chassis sheet metal assembly; the elastic sealing piece 2, the metal connecting piece 3 and the harness shell 4 are assembled with a high-voltage wire 7 (or a high-voltage wire harness) into a harness assembly, and the harness assembly is arranged below the automobile chassis sheet metal 5 and fixedly connected with the automobile chassis sheet metal assembly through the nut 6.

[0047] As Figure 2 shown, the metal base 1 includes a base body 11, a stud 12, a base flange 13, an elastic sealing element through hole 14, and a base sealant 15.

[0048] The base body 11 is made of metal material, and the lower surface is a plane, which can be well welded with the automobile chassis sheet metal 5 to increase the strength of the automobile chassis sheet metal 5 installation part; two studs 12 are respectively fixedly connected on both sides of the base body 11 through the punching welding process, which is used for positioning and fixing during the installation process of the whole device, and the stud 12 is not limited to two, but also can be multiple; the base flange 13 is formed by folding the outer edge of the base body 11 upward, and the height of the base flange 13 is greater than or equal to 2 mm, which can strengthen the strength of the metal base 1; the middle position of the base body 11 is provided with an elastic sealing element through hole 14, which is adapted to the installation size of the elastic sealing element 2; the upper surface of the base body 11 is provided with a base sealant 15 around each stud 12, which realizes good sealing.

[0049] The base body 11 is welded on the automobile chassis sheet metal 5, the stud 12 passes through the elastic sealing element 2, the metal connecting piece 3 and the wire harness shell 4 in sequence, and is fixedly connected through the nut 6. The pressure is applied to the wire harness shell 4, the metal connecting piece 3 and the elastic sealing element 2 in sequence through the nut 6, so that the elastic sealing element 2 is forced to compress and deform, forming a good seal, which can effectively prevent water from entering the vehicle; compared with the traditional rubber sleeve wire passing device, the device sets the elastic sealing element 2 between the metal base 1 and the metal connecting piece 3, which ensures the installation strength and avoids falling off, and can be applied to different strength body sheet metals.

[0050] As Figure 3 , Figure 4 shown, the elastic sealing element 2 is made of rubber material, which includes a sealing body 201, a sealing element first stud through hole 202, a first sealing ring 203, a sealing element second stud through hole 204, a second sealing ring 205, a guide boss 206, a third sealing ring 207, a mounting boss 208, a connecting groove 209, a wire harness sealing sleeve 210, and a fourth sealing ring 211.

[0051] The upper surface and the lower surface of the sealing body 201 respectively contact the automobile chassis sheet metal 5 and the metal connecting piece 3, and the upper surface and the lower surface are both planes. The upper surface serves as a reference datum of the sealing surface, and the lower surface is used to bear and transmit the pressure of the metal connecting piece 3 for compressing the rubber; the sealing body 201 provides a compression deformation amount between the metal connecting piece 3 and the automobile chassis sheet metal 5 to realize the sealing of the device, and provides thickness support for the wire harness sealing sleeve 210.

[0052] The sealing body 201 has a circular first stud through hole 202 and an elliptical second stud through hole 204 on both sides. The outer periphery of the first stud through hole 202 is provided with a first sealing ring 203 protruding from the upper surface of the sealing body 201, and the outer periphery of the second stud through hole 204 is provided with a second sealing ring 205 protruding from the upper surface of the sealing body 201.

[0053] A guide boss 206 protruding upward is provided at the middle position of the upper surface of the sealing body 201, and a third sealing ring 207 protruding from the upper surface of the sealing body 201 is provided on the outer periphery of the guide boss 206. The guide boss 206 extends through the elastic sealing element through hole 14 to the top of the base body 11. On the one hand, it provides guidance during the installation process to facilitate assembly, and on the other hand, it further provides thickness support for the wire harness sealing sleeve 210, increasing the strength of the elastic sealing element 2.

[0054] The first sealing ring 203, the second sealing ring 205, and the third sealing ring 207 have the same protrusion height, ranging from 0.3mm to 1mm. When the elastic seal 2 is compressed, the first sealing ring 203, the second sealing ring 205, and the third sealing ring 207 deform, further enhancing the sealing effect.

[0055] A downwardly protruding mounting boss 208 is provided at the middle position of the lower surface of the sealing body 201. A connecting groove 209 for engaging the metal connector 3 is provided around the outer wall of the mounting boss 208. Two wire harness sealing sleeves 210 are provided. Each wire harness sealing sleeve 210 passes through the guide boss 206, the sealing body 201 and the mounting boss 208 in sequence and extends to the bottom of the mounting boss 208. When the high-voltage wire 7 (or high-voltage wire harness) passes through the wire harness sealing sleeve 210 and the metal connector 3 is engaged in the connecting groove 209, the wire harness sealing sleeve 210 uses the elastic contraction of rubber to fix and seal the high-voltage wire 7 (or high-voltage wire harness). Inside each wire harness sealing sleeve 210, three fourth sealing rings 211 are arranged vertically at intervals. The fourth sealing rings 211 protrude around the inner wall of the wire harness sealing sleeve 210, which can enhance the sealing effect on the high-voltage wire 7 (or high-voltage wire harness).

[0056] like Figure 5 As shown, the metal connector 3 includes a connector body 31, a first stud through hole 32, a second stud through hole 33, a connecting hole 34, a lower flange 35, a wire harness sheath interface 36, and an upper flange 37.

[0057] The connecting piece body 31 is made of metal material, the upper surface is in contact with the lower surface of the sealing body 201, and the pressure can be provided after installation and fixation; the two sides of the connecting piece body 31 are respectively provided with a circular connecting piece first stud through hole 32 and an oval connecting piece second stud through hole 33; the middle position of the connecting piece body 31 is provided with a connecting hole 34, and the connecting piece lower flange 35 is formed by downwardly folding the edge of the connecting hole 34 of the connecting piece body 31, the metal connecting piece 3 is clamped in the connecting groove 209 through the connecting hole 34 and is in interference fit with the connecting groove 209, the connecting piece lower flange 35 is used for enhancing the strength of the metal connecting piece 3 and maintaining contact when the interference fit with the connecting groove 209 is performed; the connecting piece upper flange 37 is formed by upwardly folding the outer edge of the connecting piece body 31, the sealing body 201 is higher than the connecting piece upper flange 37 by 1mm-5mm, and the connecting piece upper flange 37 is used for enhancing the strength of the metal connecting piece 3 and limiting the sealing body 201; the upper ends of the two sides of the connecting piece upper flange 37 are respectively provided with a wire harness sheath interface 36, which is used for clamping the wire harness sheath 4, and the opening height of the wire harness sheath interface 36 is 3mm-5mm.

[0058] As shown in Figure 6 、 Figure 9 , the wire harness sheath 4 includes a sheath body 401, a mounting groove 402, a wiring groove 403, a mounting surface 404, a clamping structure 405, a main positioning hole 406, an auxiliary positioning hole 407, a stud locking structure 408, a liquid leakage heat dissipation hole 409, a partition plate 410, a cable tie through hole 411, and a sheath fixing piece 412.

[0059] The sheath body 401 is made of non-metal material, and the sheath body 401 is provided with the mounting groove 402 and the wiring groove 403 which are connected; the mounting groove 402 is a semi-closed groove structure, which is used for adapting the elastic sealing piece 2 and the metal connecting piece 3, and providing necessary space for the bending of the high-voltage wire 7 (or high-voltage wire harness); the wiring groove 403 is used for direction and state constraint after the high-voltage wire 7 (or high-voltage wire harness) through hole; the mounting surface 404 is fixedly connected to the outer edge of the mounting groove 402, and can be well attached to the lower surface of the connecting piece body 31; the clamping structure 405 is arranged at the position corresponding to the wire harness sheath interface 36 on the two sides of the mounting surface 404, and the clamping structure 405 can be clamped on the wire harness sheath interface 36, so that the installation is convenient.

[0060] Two sides of the mounting surface 404 are respectively provided with a circular main positioning hole 406 and an oval auxiliary positioning hole 407; the sealing member first stud through hole 202, the connecting member first stud through hole 32 and the main positioning hole 406 are coaxial and concentric, one of the studs 12 passes through the sealing member first stud through hole 202, the connecting member first stud through hole 32 and the main positioning hole 406 in turn and is fixedly connected below the main positioning hole 406 through the nut 6, and the main positioning hole 406 plays a main positioning role in the installation process; the sealing member second stud through hole 204, the connecting member second stud through hole 33 and the auxiliary positioning hole 407 are coaxial and concentric, the other stud 12 passes through the sealing member second stud through hole 204, the connecting member second stud through hole 33 and the auxiliary positioning hole 407 in turn and is fixedly connected below the auxiliary positioning hole 407 through the nut 6, and the auxiliary positioning hole 407 plays an auxiliary positioning role in the installation process.

[0061] The sealing member first stud through hole 202, the connecting member first stud through hole 32 and the main positioning hole 406 are used in groups, and 1-2 groups are optimal; the sealing member second stud through hole 204, the connecting member second stud through hole 33 and the auxiliary positioning hole 407 are used in groups, and 1-3 groups are optimal; the number of the studs 12 is the same as the total number of groups, and each group passes through the stud 12 and is fixedly connected through the nut 6.

[0062] The auxiliary positioning hole 407 is fixedly connected with the stud locking structure 408, the stud locking structure 408 includes two oppositely arranged inclined angle ribs, can be clamped on the stud 12 in the installation process, prevents the wire harness assembly from falling due to gravity, and facilitates assembly.

[0063] A plurality of liquid leakage and heat dissipation holes 409 are arranged at the lowest point of the bottom of the mounting groove 402, and the liquid leakage and heat dissipation holes 409 can be circular, oval, square or other various shapes, and are used for liquid leakage on one hand, preventing liquid accumulation when the vehicle is in a water working condition, avoiding water immersion of the high-voltage wire 7 (or high-voltage wire harness), and accelerating heat dissipation of the high-voltage wire 7 (or high-voltage wire harness) under the disturbance of driving airflow on the other hand, and accelerating evaporation of moisture.

[0064] A partition plate 410 is arranged in the inner cavity of the wire routing groove 403, and the partition plate 410 is fixedly connected to the bottom of the wire routing groove 403, divides the inner cavity of the wire routing groove 403 into two chambers along the width direction, can isolate the high-voltage wire 7 (or high-voltage wire harness), and avoids crossing of multiple high-voltage wires 7 (or high-voltage wire harnesses).

[0065] A plurality of groups of cable tie through holes 411 are arranged at the bottom of the wire routing groove 403, and each group of cable tie through holes 411 is arranged at a turning or deformation position of the wire routing groove 403; each group of cable tie through holes 411 includes four through holes, which are distributed on both sides of the partition plate 410, and two on each side; the cable tie through holes 411 are used for passing through the cable tie 8, and realize binding, restraining and fixing of the high-voltage wire 7 (or high-voltage wire harness).

[0066] The shell body 401 is fixedly connected with a shell fixing part 412 at one end away from the mounting groove 402, and the wire harness shell 4 is fixedly connected to the automobile chassis panel 5 through the shell fixing part 412.

[0067] As shown in Figure 7 , Figure 8 The upper surface of the automobile chassis panel 5 is provided with an adaptation plane 55, the lower surface of the base body 11 is welded at the middle position of the adaptation plane 55, the outer edge of the adaptation plane 55 surrounds the outer circle of the base body 11 and is greater than or equal to 3 mm from the outer edge of the base body 11; the two sides of the adaptation plane 55 are respectively provided with a circular chassis first stud through hole 51 and an elliptical chassis second stud through hole 52, and the two studs 12 respectively pass through the chassis first stud through hole 51 and the chassis second stud through hole 52; the size of the chassis first stud through hole 51 and the chassis second stud through hole 52 is slightly larger than the size of the stud 12, for example, when the stud 12 is an M6 stud, the chassis first stud through hole 51 is a circular hole with a diameter of 6.2 mm, and the chassis second stud through hole 52 is an elliptical hole with a size of 6.2 mm*10.2 mm, the size can be designed according to the process tolerance level of the specific manufacturing level, and the centers of the chassis first stud through hole 51 and the chassis second stud through hole 52 are concentric with the stud 12; the upper surface of the automobile chassis panel 5 is provided with sealing glue 9 around each stud 12 to achieve good sealing; the middle position of the adaptation plane 55 is provided with a mounting hole 53 for the installation of the guide boss 206, and the outer edge of the mounting hole 53 surrounds the circle of the guide boss 206 and is 0.5-2 mm from the outer edge of the guide boss 206; the automobile chassis panel 5 is provided with a connecting structure 54 at a position corresponding to the shell fixing part 412, and the shell fixing part 412 and the connecting structure 54 are matched and connected by bolts and nuts.

[0068] As shown in Figures 8 to 13 The application also discloses a mounting method of the automobile high-voltage wire passing protection device, which is used for installing the automobile high-voltage wire passing protection device and takes two high-voltage wires 7 as an example and includes the following steps:

[0069] Step one, welding the metal base 1 on the upper surface of the automobile chassis panel 5 to obtain an automobile chassis panel assembly, specifically including the following steps:

[0070] Step 1-1, applying a circle of sealing glue 9 around the chassis first stud through hole 51 and the chassis second stud through hole 52 on the upper surface of the automobile chassis panel 5;

[0071] Step 1-2, passing the two studs 12 through the chassis first stud through hole 51 and the chassis second stud through hole 52 respectively;

[0072] Step 1-3, the lower surface of the base body 11 is attached to the adapter plane 55 and welded together, at this time the sealant 9 is deformed, forming an effective seal around the stud 12.

[0073] Step two, the elastic seal 2, metal connector 3, wire harness shell 4 and two high-voltage wires 7 are assembled into a wire harness assembly, and the high-voltage wires 7 are laid in the wire harness shell 4 after passing through the elastic seal 2 and the metal connector 3 in turn. Specifically, the following steps are included:

[0074] Step 2-1, pass the two high-voltage wires 7 through the two wire harness seal sleeves 210 of the elastic seal 2 and then through the connecting holes 34 of the metal connector 3;

[0075] Step 2-2, keep the seal first stud through hole 202 and the connector first stud through hole 32 aligned, and the seal second stud through hole 204 and the connector second stud through hole 33 aligned, and then insert the metal connector 3 into the connecting groove 209. Due to the shrinkage characteristics of the rubber after interference fit, a good seal for the high-voltage wires 7 is achieved;

[0076] Step 2-3, keep the main positioning hole 406 of the wire harness shell 4 aligned with the seal first stud through hole 202, the connector first stud through hole 32, and the auxiliary positioning hole 407 aligned with the seal second stud through hole 204, the connector second stud through hole 33. Use external force to attach the mounting surface 404 to the lower surface of the connector body 31, so that each clamping structure 405 is clamped on the corresponding wire harness shell interface 36;

[0077] Step 2-4, arrange the portions of the two high-voltage wires 7 below the metal connector 3 in the two cavities of the wire routing groove 403 respectively, and use the cable tie 8 to pass through the cable tie through hole 411 to constrain and fix the two high-voltage wires 7 on the shell body 401 respectively.

[0078] Step three, pass the portions of the two high-voltage wires 7 above the elastic seal 2 through the mounting hole 53 of the automobile chassis sheet metal 5 and the elastic seal through hole 14 of the metal base 1 and out to the upper side of the metal base 1; pass the stud 12 on one side of the metal base 1 through the seal first stud through hole 202, the connector first stud through hole 32 and the main positioning hole 406 in turn, and the stud 12 on the other side through the seal second stud through hole 204, the connector second stud through hole 33 and the auxiliary positioning hole 407 in turn; keep the guide boss 206 aligned with the elastic seal through hole 14 and the shell fixing part 412 aligned with the connecting structure 54; then push the wire harness assembly up, at this time the stud locking structure 408 locks the corresponding stud 12; finally, connect the corresponding nut 6, and fix the shell fixing part 412 and the connecting structure 54, completing the installation of the device.

[0079] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalent features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A high-voltage wire passing protection device for a vehicle, characterized by: The utility model provides a kind of high-voltage wire harness assembly, including metal base, elastic seal, metal connecting piece, wire harness shell and nut;Metal base includes base body and stud, stud is fixedly connected on base body;Elastic seal, metal connecting piece, wire harness shell are assembled into wire harness assembly with high-voltage wire group, metal base is welded on the upper surface of automobile chassis sheet metal, wire harness assembly is arranged below automobile chassis sheet metal, the middle position of base body is equipped with elastic seal through hole, elastic seal includes sealing body, the middle position of the upper surface of sealing body is provided with the guide boss that protrudes upwards, guide boss is passed through elastic seal through hole and is above the upper surface of base body;Elastic seal adopts rubber material, the shell body of wire harness shell adopts non-metal material;Stud is sequentially passed through elastic seal, metal connecting piece and wire harness shell, and is fixedly connected by nut, and pressure is sequentially transmitted to wire harness shell, metal connecting piece and elastic seal by nut, so that elastic seal is stressed compression deformation, metal connecting piece also includes connecting piece upper flange and wire harness shell interface, connecting piece upper flange is formed by the outer edge of connecting piece body one week upwards and is folded, and the upper end of connecting piece upper flange is equipped with wire harness shell interface;The position corresponding wire harness shell interface is provided with clamping structure on mounting surface.

2. The automobile high-voltage wire protection device according to claim 1, characterized by: The two sides of the sealing body are respectively provided with a circular sealing piece first stud through hole and an oval sealing piece second stud through hole; The metal connecting piece includes a connecting piece body, a connecting piece first stud through hole and a connecting piece second stud through hole, and the two sides of the connecting piece body are respectively provided with a circular connecting piece first stud through hole and an oval connecting piece second stud through hole; The wire harness shell includes a shell body, a mounting groove, a wiring groove, a mounting surface, a main positioning hole, an auxiliary positioning hole and a stud locking structure, the mounting groove and the wiring groove are connected and arranged on the shell body, the mounting surface is fixedly connected to the outer edge of the mounting groove, and the two sides of the mounting surface are respectively provided with a circular main positioning hole and an oval auxiliary positioning hole; The sealing piece first stud through hole, the connecting piece first stud through hole and the main positioning hole are used in groups, the sealing piece second stud through hole, the connecting piece second stud through hole and the auxiliary positioning hole are used in groups, the number of studs is the same as the total number of groups, each group is respectively passed through a stud and fixedly connected by a nut.

3. The automobile high voltage wire protection device of claim 2, wherein: The auxiliary positioning hole is fixedly connected with a stud locking structure.

4. The automobile high voltage wire protection device of claim 2, wherein: The elastic seal further includes a mounting boss, a connecting groove and a wire harness sealing sleeve, the middle position of the lower surface of the sealing body is provided with a downward protruding mounting boss, the outer wall of the mounting boss is provided with a connecting groove one week, and the wire harness sealing sleeve is sequentially penetrated through the guide boss, the sealing body and the mounting boss and extended below the mounting boss; The middle position of the connecting piece body is provided with a connecting hole, and the metal connecting piece is clamped in the connecting groove through the connecting hole and is in interference fit with the connecting groove.

5. The automobile high-voltage wire passing protection device according to claim 4, characterized in that: The outer periphery of the sealing piece first stud through hole is provided with a first sealing ring protruding from the upper surface of the sealing body, the outer periphery of the sealing piece second stud through hole is provided with a second sealing ring protruding from the upper surface of the sealing body, and the outer periphery of the guide boss is provided with a third sealing ring protruding from the upper surface of the sealing body.

6. The automobile high voltage wire protection device of claim 4, wherein: The inside of the wire harness sealing sleeve is provided with a plurality of fourth sealing rings arranged in an up-down interval, and the fourth sealing rings protrude from the inner wall of the wire harness sealing sleeve one week.

7. The automobile high voltage wire protection device of claim 2, wherein: A partition is arranged in the inner cavity of the wiring slot, and the partition separates the inner cavity of the wiring slot into two chambers along the width direction; the bottom of the wiring slot is provided with a plurality of groups of cable tie through holes, and each group of cable tie through holes is arranged at a turning or deformation position of the wiring slot; each group of cable tie through holes includes a plurality of through holes distributed on both sides of the partition.

8. The automobile high voltage wire protection device of claim 2, wherein: A plurality of liquid leakage and heat dissipation holes are arranged at the lowest position of the bottom of the mounting groove.

9. A mounting method of an automobile high-voltage wire passing protection device, used for mounting the automobile high-voltage wire passing protection device according to any one of claims 1-8, comprising the following steps: Step one, welding the metal base on the upper surface of the automobile chassis panel to obtain an automobile chassis panel assembly; Step two, assembling the elastic sealing element, the metal connecting element, the wire harness sheath and the high-voltage wire or high-voltage wire harness into a wire harness assembly, and the high-voltage wire or high-voltage wire harness is sequentially laid in the wire harness sheath after passing through the elastic sealing element and the metal connecting element; Step three, the part of the high-voltage wire or high-voltage wire harness above the elastic sealing element is passed through the automobile chassis panel and the metal base and then out to the upper side of the metal base, the stud is sequentially passed through the elastic sealing element, the metal connecting element and the wire harness sheath, then the wire harness assembly is pushed up, finally the nut is connected, and the wire harness sheath is fixedly connected with the automobile chassis panel, and the installation of the device is completed.

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