Dual-hole grommet, braking system, and vehicle

Abstract

A dual-hole grommet, a braking system, and a vehicle. A grommet main body (200) is provided with a snap-fit portion (230) configured to be connected to a vehicle body hole and two through holes, the snap-fit portion is located on the side of the grommet main body in the thickness direction, and the two through holes are arranged at an interval in the length direction of the grommet main body (200); each through hole is internally provided with a plurality of petal-shaped blocks (240), each petal-shaped block (240) is fixedly connected to the grommet main body (200), the plurality of petal-shaped blocks (240) are circumferentially arranged around the center of the corresponding through hole and jointly form a pipe hole for fixing a brake oil pipe, a gap is formed between any two adjacent petal-shaped blocks (240), and the thickness of each petal-shaped block decreases toward the pipe hole; a reinforcing rib assembly is provided on the side of the grommet main body (200) close to the snap-fit portion and is fixedly connected to the grommet main body (200), two opposite ends of the reinforcing rib assembly are fixedly connected to the snap-fit portion (230) separately, and the two through holes are respectively located on two opposite sides of the reinforcing rib assembly. The dual-hole grommet is easy to mount and does not easily fall off, thereby improving the mounting efficiency.

Description

Double-hole plug, braking system and vehicle Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a double-hole plug, a braking system, and a vehicle. Background Technology

[0002] In the vehicle assembly process, the brake lines in the braking system need to be stably installed at the perforations in the vehicle body using a through-hole plug made of rubber. This ensures that the brake lines are fixed to the vehicle body and do not easily move around. At the same time, the through-hole plug can isolate the brake lines from the perforations in the vehicle body, preventing damage to the brake lines due to scratching between them.

[0003] When only one brake line is being installed, a single-hole through-hole cap is typically used; when two brake lines are being installed, a double-hole through-hole cap is generally used. This eliminates the need to create two separate holes in the vehicle body to install the single-hole through-hole cap, thus simplifying the perforation process, shortening processing time, and reducing costs. However, using existing double-hole through-hole caps presents challenges in assembly, such as difficulty in assembly and a tendency for them to detach, leading to increased assembly complexity and low assembly efficiency.

[0004] Summary of the Invention

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a double-hole plug, a braking system, and a vehicle, which can solve the problems of difficult assembly and easy detachment of double-hole plugs in the prior art, and improve assembly efficiency.

[0006] A first aspect of the present invention provides a double-hole plug, comprising:

[0007] The plug body has a snap-fit ​​part for connecting with a body hole and two through holes. The snap-fit ​​part is located on one side of the plug body in the thickness direction, and the two through holes are arranged at intervals along the length direction of the plug body.

[0008] Each of the through holes is provided with a plurality of the aforementioned petal blocks. Each of the aforementioned petal blocks is fixedly connected to the plug body. The plurality of the aforementioned petal blocks are arranged in a circular pattern around the center of the through hole and together form a pipe hole for fixing the brake oil pipe. A gap is provided between any two adjacent petal blocks. The thickness of each of the aforementioned petal blocks decreases towards the pipe hole.

[0009] A reinforcing rib assembly is disposed on the side of the plug body near the snap-fit ​​portion and is fixedly connected to the plug body. The opposite ends of the reinforcing rib assembly are respectively fixedly connected to the snap-fit ​​portion, and the two through holes are respectively located on opposite sides of the reinforcing rib assembly.

[0010] According to the first aspect of the present invention, the double-hole plug has at least the following advantages: the plug body is provided with a snap-fit ​​part and two through holes, and each through hole is provided with multiple petal blocks. The multiple petal blocks arranged circumferentially define the pipe hole. Therefore, two brake oil pipes can be passed through the two pipe holes on the plug body respectively and inserted into the body hole through the snap-fit ​​part, so that the plug body and the brake oil pipe are fixed relative to the body and the brake oil pipe can be arranged through the body hole. The thickness of each petal block gradually decreases towards the pipe hole, and there is a certain size gap between any two adjacent petal blocks. Therefore, when the brake oil pipe is inserted into the pipe hole, each petal block is easily stressed and deformed, which increases the diameter of the pipe hole and reduces the difficulty of installing the brake oil pipe. Moreover, when the brake oil pipe moves axially, the deformation of the petal blocks reduces the pulling effect of the brake oil pipe on the plug body and prevents the plug body from easily detaching from the body hole.

[0011] Furthermore, a reinforcing rib assembly is provided between the two pipe holes. The reinforcing rib assembly is fixedly connected to the plug body and the snap-fit ​​part respectively. When the brake oil pipe passing through the pipe hole undergoes axial movement, the reinforcing rib assembly can limit the deformation of the plug body in its width direction, so that the snap-fit ​​part always remains snap-fitted to the vehicle body, preventing the plug body from easily falling off.

[0012] In some embodiments of the present invention, the reinforcing rib assembly is integrally formed with the snap-fit ​​portion and the plug body, and each of the petal blocks is integrally formed with the plug body.

[0013] In some embodiments of the present invention, each of the through holes is a circular hole, each of the petals is fan-shaped, the petals have a large arc surface and a small arc surface, the large arc surface is fixedly connected to the inner wall surface of the through hole, and multiple small arc surfaces together form the tube hole.

[0014] In some embodiments of the present invention, each of the petal blocks has an inclined surface on the side near the snap-fit ​​portion, and the inclined surface is inclined in a direction from the large arc surface to the small arc surface toward the side of the plug body away from the snap-fit ​​portion.

[0015] In some embodiments of the present invention, the width of the gap increases toward the side of the plug body closer to the snap-fit ​​portion.

[0016] In some embodiments of the present invention, the cross-sectional shape of the gap is an isosceles trapezoid.

[0017] In some embodiments of the present invention, the snap-fit ​​portion is waist-shaped when viewed along the thickness direction of the plug body and forms a receiving area, the reinforcing rib assembly is located in the receiving area, and the opposite two end faces of the reinforcing rib assembly are fixedly connected to the inner peripheral wall surface of the snap-fit ​​portion.

[0018] In some embodiments of the present invention, the two holes are symmetrically arranged with respect to the reinforcing rib assembly.

[0019] In some embodiments of the present invention, the reinforcing rib assembly includes at least one reinforcing rib portion, the cross-sectional shape of which is square or isosceles trapezoidal.

[0020] In some embodiments of the present invention, each of the through holes is provided with four of the petal blocks, any two adjacent gaps are arranged perpendicularly, and the inclined surfaces of the four petal blocks together form a conical surface.

[0021] In some embodiments of the present invention, the cross-sectional shape of the snap-fit ​​portion is hook-shaped, and a snap-fit ​​groove for connecting with the vehicle body is formed between the snap-fit ​​portion and the surface of the plug body near the snap-fit ​​portion.

[0022] In some embodiments of the present invention, the periphery of the plug body protrudes to the side of the snap-fit ​​portion to form an abutment portion, the abutment portion being located above the snap-fit ​​portion.

[0023] In some embodiments of the present invention, the plug body, the reinforcing rib assembly and the petal block are all made of EPDM material and have an HB value of 60±5.

[0024] A second aspect of the present invention provides a braking system comprising a brake hose and a double-hole plug as described in the first aspect embodiment, wherein the brake hose is interference-fitted with the holes.

[0025] The braking system according to the second aspect of the present invention has at least the following beneficial effects: using the double-hole plug with the above-described structure to install the brake oil pipe can reduce the assembly difficulty of the brake oil pipe, and even if the brake oil pipe moves axially after being installed in the pipe hole, it can prevent the plug body from easily coming off the body hole, ensuring the installation stability of the plug body and improving the assembly efficiency of the braking system.

[0026] A third aspect of the present invention provides a vehicle that includes a braking system as described in the second aspect.

[0027] The vehicle according to the third aspect of the present invention has at least the following advantages: when the vehicle adopts the braking system with the above-described structure, the assembly difficulty of the braking system can be reduced and the assembly time can be shortened when the braking system is installed on the vehicle body.

[0028] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0029] Figure 1 is a three-dimensional structural diagram of a single-hole plug provided by the prior art;

[0030] Figure 2 is a cross-sectional view of the single-hole plug shown in Figure 1;

[0031] Figure 3 is a three-dimensional structural schematic diagram of a double-hole plug provided according to a first aspect embodiment of the present invention;

[0032] Figure 4 is a three-dimensional structural schematic diagram of the double-hole plug provided according to the first aspect of the present invention from another perspective.

[0033] Figure 5 is a top view of a double-hole plug provided according to a first aspect embodiment of the present invention;

[0034] Figure 6 is a schematic cross-sectional view of section AA in Figure 5;

[0035] Figure 7 is a schematic cross-sectional view of section BB in Figure 5;

[0036] Figure 8 is a schematic cross-sectional view of section CC in Figure 5;

[0037] Figure 9 is a bottom view of a double-hole plug provided according to a first aspect embodiment of the present invention;

[0038] Figure 10 is a structural schematic diagram of the double-hole plug provided according to the first aspect embodiment of the present invention in the assembled state.

[0039] Reference numerals: 100, single-hole plug; 110, annular protrusion; 111, mounting hole; 120, connecting part; 200, plug body; 210, pipe hole; 220, gap; 230, snap-fit ​​part; 231, guide surface; 240, flap; 241, inclined surface; 250, reinforcing rib; 260, receiving area; 270, snap-fit ​​groove; 280, abutment part; 300, brake oil pipe; 400, sheet metal part. Detailed Implementation

[0040] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of this invention, it should be understood that features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] The braking system is an important component of a car. It is a specialized device that applies a certain force to the wheels (mainly brake discs) to brake the vehicle and ensure driving safety. Generally, the structure of a braking system includes the brakes, brake lines, master cylinder, and vacuum booster.

[0044] Brake lines are the essential pathway for transmitting braking pressure in a car. They act as a link and bridge between the master cylinder and the four wheels. The master cylinder is located in the engine compartment, and the brake lines connected to it need to reach the four wheels. To connect the brake lines to the wheels, they generally need to pass through the car body. Therefore, perforations (or body holes) need to be created in the car body. In order to prevent the brake lines from rubbing against the perforations and causing damage, a part, namely a perforation plug made of rubber material, is usually required to isolate the brake lines from the perforations, preventing direct contact between the brake lines and the perforations. At the same time, it can also firmly fix the brake lines to the car body, making it difficult for the brake lines to move.

[0045] When brake lines installed on the chassis of a car are single and independently routed, a through hole is usually machined into the car body and a single-hole plug 100 is installed, as shown in Figures 1 and 2. The annular protrusion 110 of the single-hole plug 100 has a mounting hole 111 so that the brake line can pass through and be fixed. The cross-sectional shape of the connecting part 120 of the single-hole plug 100 is hook-shaped, which can be engaged with the hole in the car body to ensure that the single-hole plug 100 and the brake line are firmly fixed relative to the car body and are not easy to fall off.

[0046] When two brake lines are arranged in parallel on the chassis of a car, if two through holes are machined in the body and two single-hole plugs are installed in each, it will prolong the machining time of the through holes and increase the manufacturing cost. Therefore, it is necessary to develop through plugs with a double-hole structure. In this case, only one through hole needs to be manufactured in the body to meet the assembly requirements of two brake lines. Moreover, it can simplify the machining process of the through holes, shorten the machining time, save costs, and occupy less space.

[0047] If a hole is machined into the vehicle body and a double-hole plug is installed, and the size of this hole is larger than the hole corresponding to a single-hole plug (100), then the design of the double-hole plug needs to ensure the assemblability between the brake line and the double-hole plug, as well as the assemblability between the double-hole plug and the vehicle body. Therefore, the design and development of the double-hole plug is particularly important.

[0048] However, when using the existing double-hole through-hole plug, there are problems with difficult assembly and easy detachment, which increases the assembly difficulty, cannot support the development of brake lines, and results in low assembly efficiency of brake lines.

[0049] Specifically, if one brake line is installed first and then the double-hole cap is installed during the assembly of the brake lines to the master cylinder, the double-hole cap is prone to detaching due to the force applied by the other brake line when installing the second brake line. Furthermore, the confined space makes it difficult to install the double-hole cap. Conversely, if the double-hole cap is installed before the brake lines are installed during the assembly of the brake lines to the master cylinder, the brake lines are difficult to fit into the double-hole cap, and the double-hole cap is prone to detaching from the bodywork holes during the installation of the brake lines.

[0050] The above situations often lead to worker complaints during the installation of braking systems. Therefore, it is particularly important to develop a double-hole plug that meets assembly requirements to support the development of brake lines.

[0051] Based on the above-mentioned problems, the present invention provides a double-hole plug, a braking system and a vehicle, which can effectively solve the problems of difficult assembly and easy detachment of double-hole plugs in the prior art, and effectively improve the assembly efficiency of the braking system.

[0052] The following description, with reference to Figures 3 to 10, describes a dual-hole plug, braking system, and vehicle according to an embodiment of the present invention.

[0053] As shown in Figures 3 to 10, the double-hole plug according to the first aspect of the present invention can be installed in the body hole manufactured in the vehicle chassis and used to securely fix the brake oil pipe 300 in the braking system, so as to realize the parallel arrangement of the two brake oil pipes 300 and effectively solve the assembly and easy falling-off problems of the existing double-hole plug.

[0054] The structure of the double-hole plug includes a plug body 200, a flap 240, and a reinforcing rib assembly.

[0055] To clearly illustrate the structure of the double-hole plug, its orientation is defined based on its installation position on the vehicle body. In this embodiment, the length direction of the plug body 200 is defined as the left-right direction, the thickness direction of the plug body 200 is defined as the up-down direction, and the width direction of the plug body 200 is defined as the front-back direction.

[0056] The plug body 200 is provided with a snap-fit ​​portion 230, which is located on one side of the plug body 200 in the thickness direction and is integrally formed with the plug body 200. The function of the snap-fit ​​portion 230 is to connect with the body hole, so that the double-hole plug is fixed to the vehicle body. The plug body 200 and the snap-fit ​​portion 230 can be made of rubber material. Viewed vertically, the shape of the plug body 200 can be rectangular or oblong. In this embodiment, the plug body 200 is an oblong rubber plate, and the snap-fit ​​portion 230 is located on the lower side of the plug body 200. The shape of the snap-fit ​​portion 230 is not limited and can be set according to the actual situation, as long as it can fix the double-hole plug to the vehicle body.

[0057] In some examples, as shown in Figures 3, 4, and 6 to 9, the snap-fit ​​portion 230 is waist-shaped when viewed along the thickness direction of the plug body 200, forming a waist-shaped receiving area 260. The receiving area 260 and the lower surface of the plug body 200 together form a downward-opening groove. The snap-fit ​​portion 230 is coaxially arranged with the plug body 200. Furthermore, the cross-sectional shape of the snap-fit ​​portion 230 is hook-shaped, and a snap-fit ​​groove 270 is formed between the snap-fit ​​portion 230 and the surface of the plug body 200 near the snap-fit ​​portion 230. The snap-fit ​​groove 270 is used for connection with the vehicle body.

[0058] Specifically, as shown in Figures 7 and 8, the latching portion 230 includes an integrally formed extension and a protrusion. Viewed vertically, the extension is waist-shaped with a rectangular cross-section. It extends downwards from the lower surface of the plug body 200, forming a receiving area 260. Similarly, the protrusion is waist-shaped with a right-angled trapezoidal cross-section. Located around the periphery of the extension, its lower base connects to the outer peripheral wall of the extension. The sloping waist of the protrusion is located on the side furthest from the plug body 200. Due to the sloping waist design, the latching portion 230 has a guide surface 231 to guide the latching portion 230 when it is inserted into the body hole, allowing it to smoothly extend downwards into the body hole. The lower surface of the plug body 200, the outer peripheral surface of the extension, and the upper surface of the protrusion together define the latching groove 270.

[0059] As can be understood, as shown in Figures 7, 8, and 10, when the engaging portion 230 extends into the body hole of the sheet metal part 400, the protrusion and the plug body 200 are located on the upper and lower sides of the sheet metal part 400, respectively. The lower surface of the plug body 200 contacts the upper surface of the sheet metal part 400, the upper surface of the protrusion contacts the lower surface of the sheet metal part 400, and the outer peripheral surface of the extension contacts the inner peripheral surface of the body hole. Therefore, a certain engaging effect is achieved between the double-hole plug and the body hole, fixing the double-hole plug to the vehicle body. At this time, the body hole is an oblong hole. The thickness of the plug body 200 is less than the thickness of the protrusion.

[0060] Of course, it is not excluded that in other examples, the waist-shaped snap-fit ​​portion 230 may be cut into multiple snap-fit ​​portions 230, with gaps between any two adjacent snap-fit ​​portions 230. The number of snap-fit ​​portions 230 and the size of the gaps can be selected according to the actual situation.

[0061] The plug body 200 is also provided with two through holes, which are arranged at certain intervals along the length of the plug body 200. Both through holes are located in the projection plane of the receiving area 260 along the thickness direction of the plug body 200, and the axial direction of the through holes extends along the thickness direction of the plug body 200.

[0062] Each through-hole contains multiple flaps 240, each flap 240 being fixedly connected to the plug body 200. In this embodiment, as shown in Figures 3 to 6 and Figure 9, each flap 240 is made of rubber material and is integrally formed with the plug body 200. The multiple flaps 240 are arranged circumferentially around the center of the through-hole, and together they form a pipe hole 210. The function of the pipe hole 210 is to fix the brake oil pipe 300. It is understood that the pipe hole 210 is a circular hole, and the inner diameter of the pipe hole 210 is less than or equal to the outer diameter of the brake oil pipe 300. The number of flaps 240 can be selected according to actual conditions. In this embodiment, the inner diameter of the pipe hole 210 is slightly smaller than the outer diameter of the brake oil pipe 300.

[0063] Furthermore, as shown in Figures 3 to 6, 8, and 9, a gap 220 is provided between any two adjacent petal blocks 240, and the size of the gap 220 can be set according to the actual situation. Due to the setting of the gap 220, each petal block 240 can deform under the action of external force, allowing the petal block 240 to swing up or down, causing the diameter of the tube hole 210 to change.

[0064] In this embodiment, as shown in Figures 4 and 9, looking along the thickness direction of the plug body 200, each through hole is a circular hole, and each petal block 240 is fan-shaped. Each petal block 240 has a large arc surface, a small arc surface, and two side surfaces. The large arc surface is fixedly connected to the inner wall of the through hole, and the small arc surfaces of multiple petal blocks 240 together form the pipe hole 210. Thus, the small arc surface of each petal block 240 can contact the outer peripheral wall of the brake oil pipe 300. There is a certain distance between the oppositely arranged side surfaces of any two adjacent petal blocks 240, thereby forming a gap 220.

[0065] Furthermore, the thickness of each petal 240 decreases towards the direction of the petal 240 closer to the tube hole 210. Specifically, the thickness of each petal 240 decreases along the direction from the large arc surface to the small arc surface, meaning that the portion of the petal 240 closer to the tube hole 210 has a smaller thickness.

[0066] When the brake line 300 is inserted into the bore 210, it exerts a squeezing force on the flap 240 near the bore 210. At this time, due to the reduced thickness of the flap 240, it easily deforms, causing the bore 210 to enlarge, allowing the brake line 300 to extend into the bore 210. Furthermore, the multiple flaps 240 clamp and fix the brake line 300, preventing radial wobbling. When the brake line 300 moves axially within the bore 210, the flap 240 is easily pulled by the brake line 300, causing it to swing. This reduces the pulling force of the brake line 300 on the plug body 200, thus preventing deformation of the plug body 200, which could cause it to move towards the snap-fit ​​part 230 and detach from the body hole.

[0067] As shown in Figures 4 and 6 to 9, the reinforcing rib assembly is disposed on the side of the plug body 200 near the snap-fit ​​portion 230, and the reinforcing rib assembly is fixedly connected to the plug body 200. Moreover, the length direction of the reinforcing rib assembly extends along the width direction of the plug body 200, and the opposite ends of the reinforcing rib assembly are fixedly connected to the snap-fit ​​portion 230, respectively. The two through holes are located on opposite sides of the reinforcing rib assembly in the width direction.

[0068] Because the snap-fit ​​portion 230 adopts a waist-shaped structural design, the reinforcing rib assembly is located within the receiving area 260, and the opposite end faces of the reinforcing rib assembly are fixedly connected to the inner peripheral wall surface of the snap-fit ​​portion 230. In this embodiment, the reinforcing rib assembly is integrally formed with the snap-fit ​​portion 230 and the plug body 200, respectively. As shown in Figures 4, 6, 9, and 10, since the reinforcing rib assembly is located between the two through holes, it can play a blocking role, dividing the receiving area 260 into two independent regions, so that the mounting surfaces of the two brake oil pipes 300 are independent mounting surfaces. This avoids the situation where, when installing the second brake oil pipe 300, the force exerted by the second brake oil pipe 300 on the corresponding mounting surface of the double-hole plug affects the other mounting surface and causes severe deformation, thereby affecting the assembly of the first brake oil pipe 300.

[0069] In this embodiment, the plug body 200, the reinforcing rib assembly, and the flap 240 are all made of EPDM (ethylene propylene diene monomer rubber), which allows the brake hose 300 to be flexibly connected to the double-hole plug without damaging the brake hose 300. Therefore, in the assembly of the braking system, the brake hose 300 is installed first, and then the double-hole plug is installed, which makes it less likely for the brake hose 300 to wear. Moreover, it can avoid problems such as scratch damage between the brake hose 300 and the vehicle body. At the same time, it makes it easy to install the double-hole plug into the vehicle body hole.

[0070] Furthermore, the HB (British Hardness) value of the plug body 200, the reinforcing rib assembly, and the flap 240 is 60±5. If the double-hole plug is too soft, its viscoelasticity is low, making it difficult to assemble into the body hole, and it is also prone to detaching from the body hole; if the double-hole plug is too hard, it is difficult to install the double-hole plug with the body hole using an interference fit. By adopting the above-mentioned HB value for the double-hole plug, the difficulty of assembling the double-hole plug into the body can be reduced, and it can be ensured that the double-hole plug is not easy to detach from the body hole. At the same time, it can prevent radial movement of the brake line 300 and improve the assembly stability of the brake line 300.

[0071] Of course, it is not excluded that in other embodiments, the reinforcing rib assembly is fixedly connected to the plug body 200 and the snap-fit ​​part 230 by means of adhesive bonding or snap-fitting.

[0072] In some embodiments, as shown in Figures 3 to 6 and Figure 9, each petal block 240 is provided with a slope 241. The slope 241 is located on the side of the petal block 240 near the locking portion 230. Moreover, the slope 241 is inclined towards the side of the plug body 200 away from the locking portion 230 in a direction from the large arc surface to the small arc surface. The side of the petal block 240 away from the locking portion 230 is a plane. Therefore, the thickness of the petal block 240 is smaller the further away from the tube hole 210. That is, the thickness of the petal block 240 gradually decreases from the large arc surface to the small arc surface.

[0073] As can be understood, as shown in Figure 10, since the inclined surface 241 is located on the lower surface of the flap 240, and the upper surface of the flap 240 is flush with the upper surface of the plug body 200, the brake hose 300 can be inserted into the pipe hole 210 of the double-hole plug from bottom to top. During this process, the flap 240 will bend upward under the squeezing action of the brake hose 300, causing the inner diameter of the pipe hole 210 to increase, allowing the brake hose 300 to pass through the pipe hole 210. At this time, the force exerted by the brake hose 300 on the double-hole plug is directed upward, which allows the snap-fit ​​part 230 to abut against the lower surface of the sheet metal part 400 of the vehicle body, making the double-hole plug fit more tightly against the sheet metal part 400, thereby reducing the assembly difficulty of the brake hose 300 and effectively preventing the double-hole plug from detaching from the body hole.

[0074] Of course, it is not excluded that in other embodiments, the inclined surface 241 is located on the side of the petal block 240 away from the snap-fit ​​portion 230, that is, the upper surface of the petal block 240 is the inclined surface 241 and is lower than the upper surface of the plug body 200, and the lower surface of the petal block 240 is a plane and is flush with the lower surface of the plug body 200.

[0075] In some embodiments, as shown in Figures 3 to 10, the width of the gap 220 increases toward the side of the plug body 200 near the snap-fit ​​portion 230.

[0076] In a preferred embodiment, as shown in FIG8, the cross-sectional shape of the gap 220 is an isosceles trapezoid. Specifically, for any two adjacent petal blocks 240, the two oppositely arranged sides are symmetrically arranged, and the sides slope downwards towards the side of the petal block 240 away from the gap 220. A certain included angle α is formed between the two sides, and the specific value of the included angle α can be set according to the actual situation.

[0077] In this embodiment, as shown in Figure 8, the inclined surface 241 is located below the flap 240, and the width of the gap 220 gradually increases from top to bottom. Therefore, during the process of the brake hose 300 being inserted into the pipe hole 210 from bottom to top, the brake hose 300 applies an upward squeezing force to the multiple flaps 240, making the width of the lower part of the gap 220 smaller and the width of the upper part of the gap 220 larger. This makes it easier for the multiple flaps 240 to bend upward, and the degree of bending is greater, thereby reducing the assembly difficulty of the brake hose 300. When the brake hose 300 moves downward, the flaps 240 bend downward due to the force of the brake hose 300. At this time, the width of the upper part of the gap 220 becomes smaller and they abut against each other, thereby limiting the degree of downward bending of the flaps 240 and making it less likely for the plug body 200 to deform and fall out of the body hole.

[0078] Furthermore, the hole 210 can be a cylindrical hole; the hole 210 can also be a frustum-shaped hole, with the lower inner diameter of the hole 210 being larger than the upper inner diameter of the hole 210.

[0079] Of course, it is not excluded that in other embodiments, the width of the gap 220 is consistent in the vertical direction, and the cross-sectional shape of the gap 220 is square.

[0080] In some embodiments, as shown in Figures 4, 6 and 9, the two holes 210 are symmetrically arranged about the reinforcing rib assembly. This helps to shorten the length of the double-hole plug and allows the reinforcing rib assembly to effectively limit the deformation of the plug body 200, ensuring that the plug body 200 is not prone to bending deformation in the width direction at any position in its length direction.

[0081] Of course, it is not excluded that in other embodiments, the two holes 210 are arranged asymmetrically with respect to the reinforcing rib assembly.

[0082] In some embodiments, as shown in Figures 4, 6, 9, and 10, the reinforcing rib assembly includes a reinforcing rib portion 250. The reinforcing rib portion 250 has a square or isosceles trapezoidal cross-sectional shape. The reinforcing rib portion 250 is located at the midpoint of the plug body 200 along its length. Two pipe holes 210 are symmetrically arranged about the reinforcing rib portion 250, meaning that the distance between each pipe hole 210 and the reinforcing rib portion 250 is the same. When the cross-sectional shape of the reinforcing rib portion 250 is an isosceles trapezoid, the lower base of the reinforcing rib portion 250 is connected to the lower surface of the plug body 200. This increases the connection area between the reinforcing rib portion 250 and the plug body 200, enhancing the restraining deformation effect of the reinforcing rib portion 250 on the plug body 200.

[0083] In other embodiments, the reinforcing rib assembly includes two or more reinforcing rib portions 250, all of which are arranged at intervals along the length of the plug body 200. The cross-sectional shape of the reinforcing rib portion 250 may be square or isosceles trapezoidal.

[0084] In a specific embodiment, as shown in Figures 3 to 5 and Figure 9, for each through hole, there are four petal blocks 240, each petal block 240 has a fan-shaped annular structure, and any two adjacent gaps 220 are arranged perpendicularly. Therefore, the four gaps 220 in each through hole and the tube hole 210 together form a cross-shaped structure.

[0085] Within each through-hole, the inclined surfaces 241 of the four flaps 240 together form a conical surface, thus creating the installation inlet for the brake hose 300. During brake hose 300 installation, the brake hose 300 can be inserted into the pipe hole 210 along the direction from the inclined surface 241 of the flap 240 towards the plane of the flap 240. It is understood that the installation inlet of the brake hose 300 adopts a conical surface design, and the thickness gradually decreases. Therefore, the assembly difficulty of the brake hose 300 can be reduced. Furthermore, when the brake hose 300 undergoes axial movement, it avoids the brake hose 300 easily causing severe deformation of the plug body 200, which could lead to the plug body 200 being easily pulled out of the body hole.

[0086] Based on this structure, a reinforcing rib assembly is provided between the two pipe holes 210. When the double-hole plug is fixed to the vehicle body, even if the brake oil pipe 300 moves axially during the installation of the brake oil pipe 300, the brake oil pipe 300 will not easily drive the plug body 200 to fall out of the vehicle body hole.

[0087] In some embodiments, as shown in Figures 6 to 10, the plug body 200 is provided with an abutment portion 280. Specifically, the periphery of the plug body 200 protrudes towards the snap-fit ​​portion 230, forming the abutment portion 280. In this embodiment, the abutment portion 280 is located on the lower side of the plug body 200. Moreover, the abutment portion 280 is located above the snap-fit ​​portion 230, and there is a certain gap between the lower surface of the abutment portion 280 and the upper surface of the protrusion of the snap-fit ​​portion 230, so that a limiting groove is defined between the abutment portion 280 and the snap-fit ​​portion 230, and the vertical dimension of the limiting groove is smaller than the vertical dimension of the snap-fit ​​groove 270.

[0088] In one embodiment, as shown in FIG10, the thickness of the sheet metal part 400 of the vehicle body is equal to the upper and lower dimensions of the snap-fit ​​groove 270. When the double-hole plug is assembled into the body hole of the sheet metal part 400, the lower surface of the plug body 200 contacts the upper surface of the sheet metal part 400, the outer peripheral surface of the extension of the snap-fit ​​part 230 contacts the inner peripheral surface of the body hole, the upper surface of the protrusion of the snap-fit ​​part 230 contacts the lower surface of the sheet metal part 400, and the lower surface of the abutment part 280 abuts against the upper surface of the sheet metal part 400. At this time, the abutment part 280 will undergo an upward bending deformation, which can limit the plug body 200 from easily sinking in the direction of the snap-fit ​​part 230. At the same time, the snap-fit ​​part 230 will be pressed against the lower surface of the sheet metal part 400 due to the force between the abutment part 280 and the sheet metal part 400, thereby preventing the double-hole plug from easily falling off.

[0089] In another embodiment, the thickness of the sheet metal part 400 of the vehicle body is equal to the upper and lower dimensions of the limiting groove. When the double-hole plug is installed in the body hole of the sheet metal part 400, the lower surface of the abutment part 280 contacts the upper surface of the sheet metal part 400, the outer peripheral surface of the extension of the snap-fit ​​part 230 contacts the inner peripheral surface of the body hole, and the upper surface of the protrusion of the snap-fit ​​part 230 contacts the lower surface of the sheet metal part 400. Moreover, there is a certain gap between the lower surface of the plug body 200 and the upper surface of the sheet metal part 400. Since the space between the lower surface of the plug body 200 and the upper surface of the sheet metal part 400 is filled with air, the air pressure effectively prevents the plug body 200 from easily sinking and deforming downwards. Even if the brake oil pipe 300 moves downwards, it is not easy to drive the plug body 200 out of the body hole.

[0090] In the double-hole plug provided in the first aspect embodiment of the present invention, since the plug body 200 is provided with a snap-fit ​​part 230 and two through holes, and each through hole is provided with multiple petal blocks 240, the multiple petal blocks 240 arranged in a circle together define the pipe hole 210, so that two brake oil pipes 300 can be passed through the two pipe holes 210 on the plug body 200 respectively, and inserted into the body hole through the snap-fit ​​part 230, so that the plug body 200 and the brake oil pipes 300 are fixed relative to the body, and the brake oil pipes 300 can be arranged through the body hole.

[0091] Furthermore, since the thickness of each flap 240 gradually decreases towards the pipe hole 210, and there is a gap 220 of a certain size between any two adjacent flaps 240, when the brake hose 300 is inserted into the pipe hole 210, each flap 240 is easily subjected to force and deformed, making the diameter of the pipe hole 210 larger, reducing the difficulty of installing the brake hose 300. Moreover, when the brake hose 300 moves axially, the deformation of the flaps 240 reduces the pulling effect of the brake hose 300 on the plug body 200, preventing the plug body 200 from easily detaching from the body hole.

[0092] Furthermore, since a reinforcing rib assembly is provided between the two pipe holes 210, and the reinforcing rib assembly is fixedly connected to the plug body 200 and the snap-fit ​​part 230 respectively, when the brake oil pipe 300 passing through the pipe hole 210 undergoes axial movement, the reinforcing rib assembly can limit the deformation of the plug body 200 in its width direction, so that the snap-fit ​​part 230 always remains snapped with the vehicle body, preventing the plug body 200 from easily falling off.

[0093] As shown in Figures 3 to 10, the braking system according to a second aspect embodiment of the present invention includes a master cylinder, a brake line 300, and a double-hole plug as described in the first aspect embodiment. The master cylinder is installed in the engine compartment of the vehicle body, one end of the brake line 300 is fixedly connected to the master cylinder, and the brake line 300 is interference-fitted with the pipe hole 210 of the double-hole plug.

[0094] Because the double-hole plug and the brake oil pipe 300 are fitted with an interference fit, the double-hole plug provides a certain degree of fixation for the brake oil pipe 300, making it less prone to slippage.

[0095] When two brake lines 300 are arranged in parallel and require openings in the vehicle body, the double-hole plug of this embodiment saves costs and reduces machining time for the vehicle body openings compared to a single-hole plug, while also improving aesthetics. Furthermore, the double-hole plug provided in this embodiment is more practical, performs better, and has better fit with the brake lines 300 and vehicle body openings. It is more stable in the assembled state, less prone to falling off, and reduces complaints from production line workers. This effectively addresses the technical shortcomings of existing technologies, such as difficult plug placement, poor fit, easy detachment, and cost waste, when two brake lines 300 are arranged in parallel and require openings in the vehicle body.

[0096] It is understandable that, in the assembly of the braking system, using the double-hole plug with the above-mentioned structure to install the brake hose 300 onto the vehicle body can reduce the assembly difficulty of the brake hose 300. Furthermore, even if the brake hose 300 moves axially after being installed in the pipe hole 210, it can prevent the plug body 200 from easily coming off the body hole, ensuring the installation stability of the plug body 200 and improving the assembly efficiency of the braking system.

[0097] As shown in Figures 3 to 10, a vehicle according to a third aspect embodiment of the present invention includes a body and a braking system as described in the second aspect embodiment.

[0098] Body holes are machined at corresponding locations on the vehicle body, and double-hole plugs are installed inside these holes. Two brake lines 300 are then installed into the two pipe holes 210 on the double-hole plugs. It is understandable that using this braking system structure reduces the assembly difficulty and shortens the assembly time when installing the braking system onto the vehicle body.

[0099] Specifically, the vehicle can be a private car, such as a sedan, SUV, MPV, or pickup truck. The vehicle can also be a commercial vehicle, such as a van, bus, small truck, or large semi-trailer. The vehicle can be a gasoline-powered vehicle or a new energy vehicle. When the vehicle is a new energy vehicle, it can be a hybrid vehicle or a pure electric vehicle.

[0100] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0101] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A double-hole plug, characterized in that, include: The plug body has a snap-fit ​​part for connecting with a body hole and two through holes. The snap-fit ​​part is located on one side of the plug body in the thickness direction, and the two through holes are arranged at intervals along the length direction of the plug body. Each of the through holes is provided with a plurality of the aforementioned petal blocks. Each of the aforementioned petal blocks is fixedly connected to the plug body. The plurality of the aforementioned petal blocks are arranged in a circular pattern around the center of the through hole and together form a pipe hole for fixing the brake oil pipe. A gap is provided between any two adjacent petal blocks. The thickness of each of the aforementioned petal blocks decreases towards the pipe hole. A reinforcing rib assembly is disposed on the side of the plug body near the snap-fit ​​portion and is fixedly connected to the plug body. The opposite ends of the reinforcing rib assembly are respectively fixedly connected to the snap-fit ​​portion, and the two through holes are respectively located on opposite sides of the reinforcing rib assembly.

2. The double-hole plug according to claim 1, characterized in that, The reinforcing rib assembly is integrally formed with the snap-fit ​​part and the plug body, and each of the petal blocks is integrally formed with the plug body.

3. The double-hole plug according to claim 2, characterized in that, Each of the through holes is a circular hole, and each of the petals is fan-shaped. Each petal has a large arc surface and a small arc surface. The large arc surface is fixedly connected to the inner wall surface of the through hole, and multiple small arc surfaces together form the tube hole.

4. The double-hole plug according to claim 3, characterized in that, Each of the petals has a slope on the side near the snap-fit ​​portion, and the slope is inclined in the direction from the large arc surface to the small arc surface toward the side of the plug body away from the snap-fit ​​portion.

5. The double-hole plug according to claim 4, characterized in that, The width of the gap increases toward the side of the plug body closer to the snap-fit ​​portion.

6. The double-hole plug according to claim 5, characterized in that, The cross-sectional shape of the gap is an isosceles trapezoid.

7. The double-hole plug according to claim 5, characterized in that, Viewed along the thickness direction of the plug body, the snap-fit ​​portion is waist-shaped and forms a receiving area. The reinforcing rib assembly is located within the receiving area, and the opposite two end faces of the reinforcing rib assembly are fixedly connected to the inner peripheral wall of the snap-fit ​​portion.

8. The double-hole plug according to claim 7, characterized in that, The two holes are symmetrically arranged with respect to the reinforcing rib assembly.

9. The double-hole plug according to claim 8, characterized in that, The reinforcing rib assembly includes at least one reinforcing rib portion, the cross-sectional shape of which is square or isosceles trapezoidal.

10. The double-hole plug according to any one of claims 4 to 9, characterized in that, Each of the through holes is provided with four of the aforementioned petal blocks, and any two adjacent gaps are arranged perpendicularly. The inclined surfaces of the four petal blocks together form a conical surface.

11. The double-hole plug according to claim 10, characterized in that, The cross-sectional shape of the snap-fit ​​part is hook-shaped, and a snap-fit ​​groove for connecting with the vehicle body is formed between the snap-fit ​​part and the surface of the plug body near the snap-fit ​​part.

12. The double-hole plug according to claim 11, characterized in that, The periphery of the plug body protrudes towards the snap-fit ​​portion to form an abutment portion, which is located above the snap-fit ​​portion.

13. The double-hole plug according to any one of claims 2 to 9, characterized in that, The plug body, the reinforcing rib assembly, and the petal block are all made of EPDM material with an HB value of 60±5.

14. A braking system, characterized in that, It includes a brake hose and a double-hole plug as described in any one of claims 1 to 13, wherein the brake hose is interference-fitted to the hole.

15. A vehicle, characterized in that, Includes the braking system as described in claim 14.

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