Sealing bush, electric pedal device and vehicle

Abstract

The utility model discloses a sealing bush, an electric pedal device and a vehicle. The sealing bush comprises a bush body and a sealing piece, the bush body comprises a barrel and a brim, the brim is connected to the barrel, the sealing piece is fixed to the brim, the sealing piece is provided with a sealing part, the sealing part surrounds the inner wall of the barrel, and when the transmission shaft is arranged in the barrel in a penetrating mode, the sealing part can abut against the transmission shaft through elastic deformation. Through the mode, the sealing bush can avoid sand and dust accumulation in the using process, so that abnormal sound is eliminated, and the user experience is improved.

Description

Technical Field

[0001] The present application relates to the field of automobile accessories, and in particular to a sealing bushing, an electric pedal device and a vehicle. Background Art

[0002] Vehicles with a high ground clearance are usually equipped with electric pedals to help drivers and passengers get in and out of the vehicle cabin more easily. As a key component of the electric pedal, the bushing is crucial to the performance of the electric pedal. After a period of use, dust will accumulate in the bushing of the existing electric pedal, causing abnormal noise, which affects the user experience. Utility Model Content

[0003] The sealing bushing, electric pedal device and vehicle provided in the present application can solve the problem in the prior art that dust accumulates in the bushing of the electric pedal device after being used for a period of time, causing abnormal noise, thereby affecting the user experience.

[0004] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a sealing bushing, applied to an electric pedal device, the sealing bushing comprising: a bushing body, comprising a cylinder and a brim, the brim being connected to the cylinder; a sealing member, fixed to the brim, the sealing member having a sealing portion, the sealing portion surrounding the inner wall of the cylinder; wherein, when the transmission shaft is passed through the interior of the cylinder, the sealing portion can abut against the transmission shaft through elastic deformation.

[0005] In some embodiments, the sealing portion has an annular flat surface and an annular inclined surface, the annular flat surface is farther away from the brim than the annular inclined surface, and the annular flat surface and the annular inclined surface can intersect to form an acute angle when extending toward the center line of the cylinder.

[0006] In some embodiments, the acute angle is any value between 15° and 60°.

[0007] In some embodiments, the sealing portion further has an annular arc surface, and the annular arc surface is connected between the inner end of the annular flat surface and the inner end of the annular inclined surface.

[0008] In some embodiments, the bushing body is provided with a first limiting groove at one end close to the brim, the first limiting groove is connected to the interior of the cylinder, the seal also has a base, the base is arranged in the first limiting groove, and the sealing part is connected to the side of the base away from the first limiting groove.

[0009] In some embodiments, the first limiting groove and the cylinder are located on the same center line.

[0010] In some embodiments, a plurality of through holes are provided at the bottom of the first limiting groove, and the plurality of through holes are distributed around the inner wall of the cylinder body. A plurality of second limiting grooves are provided on a side of the brim away from the first limiting groove, and the second limiting grooves communicate with the through holes. The sealing member further includes a plurality of connecting portions and a plurality of limiting portions. The connecting portions are connected between the base body and the limiting portions, the connecting portions pass through the through holes, and the limiting portions are provided in the second limiting grooves.

[0011] In some embodiments, the sealing member is formed on the bushing body by a plastic injection molding process with overmolding.

[0012] In some embodiments, a plurality of second limiting grooves are provided on the brim, and the plurality of second limiting grooves are distributed around the inner wall of the cylinder body. The second limiting grooves communicate with the first limiting grooves. An annular groove is provided on a side of the brim away from the second limiting grooves, and the annular groove communicates with the second limiting grooves. The sealing member further includes a sealing ring and a plurality of limiting portions. The plurality of limiting portions are distributed around the base body. The limiting portions are connected between the base body and the sealing ring, the limiting portions are provided in the second limiting grooves, and the sealing ring is provided in the annular groove.

[0013] In some embodiments, the sealing member is formed on the bushing body by a two-shot injection molding process.

[0014] Another technical solution adopted by the present application is: to provide an electric pedal device, the electric pedal device includes: a mounting seat provided with a first hinge hole; a telescopic rod provided with a second hinge hole; a sealing bushing passing through the first hinge hole and the second hinge hole; a first swing arm and a second swing arm, one ends of the first swing arm and the second swing arm are hinged to the mounting seat, and the other ends of the first swing arm and the second swing arm are hinged to the telescopic rod; a transmission shaft, a middle portion of the transmission shaft passes through the first swing arm or the second swing arm, and both ends of the transmission shaft pass through the sealing bushing; a pedal body fixed to the telescopic rod; wherein, the sealing bushing is the sealing bushing described in any one of the above.

[0015] Yet another technical solution adopted by the present application is: to provide a vehicle, the vehicle includes the above-mentioned electric pedal device.

[0016] The beneficial effects of the present application are as follows: Different from the prior art, the sealing bushing provided by the present application is applied to an electric pedal device. The sealing bushing includes: a bushing body including a cylinder and a brim, the brim being connected to the cylinder; a seal fixed to the brim, the seal having a sealing portion that surrounds the inner wall of the cylinder; wherein, when a transmission shaft passes through the inside of the cylinder, the sealing portion can elastically deform to abut against the transmission shaft. In this way, the sealing bushing can avoid accumulating dust during use, thereby eliminating abnormal noises and improving the user experience. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of a vehicle provided by some embodiments of the present application;

[0019] Figure 2 It is a schematic structural diagram of an electric pedal device provided by some embodiments of the present application;

[0020] Figure 3 It is a schematic structural diagram of a telescopic bracket provided by some embodiments of the present application;

[0021] Figure 4 It is an exploded schematic diagram of a telescopic bracket provided by some embodiments of the present application;

[0022] Figure 5 It is a schematic structural diagram of a sealing bushing provided by some embodiments of the present application;

[0023] Figure 6 It is a cross-sectional view of a sealing bushing provided by some embodiments of the present application;

[0024] Figure 7 It is an exploded schematic diagram of a sealing bushing provided by some embodiments of the present application;

[0025] Figure 8 It is a cross-sectional view of a bushing body provided by some embodiments of the present application;

[0026] Figure 9 It is a schematic structural diagram of a sealing bushing provided by some other embodiments of the present application;

[0027] Figure 10 It is a cross-sectional view of a sealing bushing provided by some other embodiments of the present application;

[0028] Figure 11 It is an exploded schematic view of a sealing bushing provided in some other embodiments of the present application;

[0029] Figure 12 It is a cross-sectional view of a bushing body provided in some other embodiments of the present application.

[0030] Explanation of reference numerals: 1000 - vehicle, 100 - electric pedal device, 110 - mounting seat, 111 - first hinge hole, 120 - telescopic rod, 121 - second hinge hole, 130 - sealing bushing, 131 - bushing body, 1311 - cylinder, 1312 - brim, 1313 - first limiting groove, 1313a - through hole, 1314 - second limiting groove, 1315 - annular groove, 132 - seal, 1321 - sealing part, 1321a - annular flat surface, 1321b - annular inclined surface, 1321c - annular arc surface, 1322 - matrix, 1323 - connecting part, 1324 - limiting part, 1325 - sealing ring, 140 - first swing arm, 150 - second swing arm, 160 - transmission shaft, 170 - motor assembly, 180 - pedal body, 101 - telescopic bracket, α - acute angle. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. It can be understood that the specific embodiments described herein are only used to explain the present application, rather than limiting the present application. Additionally, it should be noted that for the sake of description, only parts related to the present application rather than all structures are shown in the accompanying drawings. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0032] The terms "first", "second", and "third" in this application are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined. In all the directional indications (such as up, down, left, right, front, back...) in the embodiments of this application, they are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, then the directional indications will change accordingly. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0033] Reference to "embodiment" in this context means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0034] The sealing bushing provided in this application is applied to an electric pedal device. The sealing bushing includes: a bushing body including a cylinder and a brim, the brim being connected to the cylinder; a sealing member fixed to the brim, the sealing member having a sealing portion that surrounds the inner wall of the cylinder; wherein when a transmission shaft passes through the inside of the cylinder, the sealing portion can elastically deform to abut against the transmission shaft. In this way, the sealing bushing can avoid accumulating dust and sand during use, thereby eliminating abnormal noises and improving the user experience.

[0035] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a vehicle provided in some embodiments of this application. The vehicle 1000 provided in this application may include, but is not limited to, an electric pedal device 100. The electric pedal device 100 is used to assist the driver and passengers to enter and exit the vehicle cabin conveniently. The electric pedal device 100 can automatically extend when the vehicle door is opened to assist the driver and passengers to enter and exit the vehicle cabin conveniently, and can automatically retract when the vehicle door is closed to ensure the passing performance and aesthetic appearance of the vehicle 1000.

[0036] Please refer to in combination Figures 2 - 4 ,Figure 2 FIG. Figure 2 is a schematic structural view of an electric pedal device provided by some embodiments of the present application. Figure 3 FIG. Figure 3 is a schematic structural view of a telescopic bracket provided by some embodiments of the present application. Figure 4 FIG. Figure 4 is an exploded schematic view of the telescopic bracket provided by some embodiments of the present application. The electric pedal device 100 provided by the present application may include, but is not limited to, a mounting seat 110, a telescopic rod 120, a sealing bushing 130, a first swing arm 140, a second swing arm 150, a transmission shaft 160, a motor assembly 170, and a pedal body 180. The mounting seat 110 is provided with a first hinge hole 111 for hinging with the first swing arm 140 or the second swing arm 150. The telescopic rod 120 is provided with a second hinge hole 121 for hinging with the first swing arm 140 or the second swing arm 150. The sealing bushing 130 is inserted through the first hinge hole 111 and the second hinge hole 121. One end of the first swing arm 140 is hinged to the mounting seat 110, and the other end of the first swing arm 140 is hinged to the telescopic rod 120. One end of the second swing arm 150 is hinged to the mounting seat 110, and the other end of the second swing arm 150 is hinged to the telescopic rod 120. The middle part of the transmission shaft 160 is inserted through the first swing arm 140 or the second swing arm 150. Both ends of the transmission shaft 160 are inserted through the sealing bushing 130 to be rotatably connected to the sealing bushing 130. The pedal body 180 is fixed to the telescopic rod 120 to extend or retract relative to the mounting seat 110 along with the movement of the telescopic rod 120. The motor assembly 170 is drivingly connected to at least one transmission shaft 160 to further drive the first swing arm 140 or the second swing arm 150, and then drive the telescopic rod 120 to move.

[0037] Wherein, the telescopic bracket 101 includes a mounting seat 110, a telescopic rod 120, a sealing bushing 130, a first swing arm 140, a second swing arm 150, and a transmission shaft 160.

[0038] It can be understood that in the existing telescopic bracket 101, due to a certain gap between the transmission shaft 160 and the bushing, and the electric pedal device 100 is generally installed on the chassis of the vehicle 1000 with relatively harsh working conditions. Therefore, after the electric pedal device 100 is used for a period of time, some dust and sand often accumulate between the transmission shaft 160 and the bushing, resulting in abnormal noises when the transmission shaft 160 rotates in the bushing, seriously affecting the user experience. At the same time, the dust and sand will cause the transmission shaft 160 and the bushing to wear faster, thereby shortening the service life of the bushing and the transmission shaft 160, making it necessary to frequently replace the bushing and the transmission shaft 160, and greatly increasing the use cost. However, the sealing bushing 130 provided by the present application can effectively prevent dust and sand from entering the gap between the transmission shaft 160 and the sealing bushing 130, thereby eliminating the abnormal noises generated thereby and improving the user experience. At the same time, it avoids the aggravation of wear between the transmission shaft 160 and the sealing bushing 130, effectively improves the service life of the transmission shaft 160 and the sealing bushing 130, and thus reduces the use cost of the electric pedal device 100.

[0039] Please refer to Figures 5 - 8 , Figure 5 which is a schematic structural view of a sealing bushing provided by some embodiments of the present application, Figure 6 which is a cross-sectional view of a sealing bushing provided by some embodiments of the present application, Figure 7 which is an exploded schematic view of a sealing bushing provided by some embodiments of the present application, Figure 8 which is a cross-sectional view of a bushing body provided by some embodiments of the present application. The sealing bushing 130 provided by the present application may include, but is not limited to, a bushing body 131 and a seal 132. The bushing body 131 may include, but is not limited to, a cylinder 1311 and a brim 1312. The brim 1312 is connected to the outer wall of one end of the cylinder 1311 to effectively control the installation position and avoid workpiece wear. The seal 132 is fixed to the brim 1312. The seal 132 has a sealing portion 1321. The sealing portion 1321 surrounds the inner wall of the cylinder 1311. When a transmission shaft 160 passes through the inside of the cylinder 1311, the sealing portion 1321 can elastically deform to abut against the transmission shaft 160 to prevent dust from entering the gap between the transmission shaft 160 and the inner wall of the cylinder 1311.

[0040] Optionally, the material of the bushing body 131 may be a metal such as copper or an engineering plastic.

[0041] Optionally, the material of the seal 132 may be silicone, TPU, TPE, etc.

[0042] Further, the sealing portion 1321 has an annular flat surface 1321a and an annular inclined surface 1321b. The annular flat surface 1321a is farther from the brim 1312 than the annular inclined surface 1321b. When the annular flat surface 1321a and the annular inclined surface 1321b extend toward the center line of the cylinder 1311, they can intersect to form an acute angle α, so that when the transmission shaft 160 passes through the inside of the cylinder 1311, the sealing portion 1321 can elastically deform to abut against the transmission shaft 160. The acute angle α is any value between 15° and 60°, so that the sealing portion 1321 can achieve an excellent sealing effect and maintain appropriate stiffness. Specifically, the acute angle α may be 15°, 17°, 20°, 22°, 25°, 27°, 30°, 35°, 40°, 45°, 47°, 50°, 55°, 60°, etc. In this embodiment, the size of the acute angle α is 45°.

[0043] Further, the sealing portion 1321 also has an annular arc surface 1321c. The annular arc surface 1321c is connected between the inner ends of the annular flat surface 1321a and the annular inclined surface 1321b, so that the transmission shaft 160 can be easily inserted into the cylinder 1311 of the sealing bushing 130, and the wear at the sealing position can be effectively reduced.

[0044] The inner end of the annular flat surface 1321a refers to the end of the annular flat surface 1321a close to the center line of the cylinder 1311; the inner end of the annular inclined surface 1321b refers to the end of the annular inclined surface 1321b close to the center line of the cylinder 1311.

[0045] Further, the bushing body 131 is provided with a first limiting groove 1313 at one end close to the brim 1312. The first limiting groove 1313 is communicated with the interior of the cylinder 1311. The seal 132 also has a base 1322. The base 1322 is arranged in the first limiting groove 1313 to provide positioning for the seal 132. The sealing portion 1321 is connected to a side of the base 1322 away from the first limiting groove 1313, so that when the transmission shaft 160 is passed through the interior of the cylinder 1311, the sealing portion 1321 can abut against the transmission shaft 160 through elastic deformation.

[0046] Furthermore, the first limiting groove 1313 and the cylinder 1311 are located on the same center line, so that the sealing bushing 130 is more beautiful and compact, and the matching effect between the transmission shaft 160 and the sealing bushing 130 is better.

[0047] In some embodiments, a plurality of through holes 1313a are provided at the bottom of the first limiting groove 1313. The plurality of through holes 1313a are distributed around the inner wall of the cylinder 1311. A plurality of second limiting grooves 1314 are provided on the side of the brim 1312 away from the first limiting groove 1313. The second limiting groove 1314 is connected to the through hole 1313a. The sealing member 132 further includes a plurality of connecting portions 1323 and a plurality of limiting portions 1324. The connecting portion 1323 is connected between the base 1322 and the limiting portion 1324. The connecting portion 1323 is provided through the through hole 1313a. The limiting portion 1324 is provided in the second limiting groove 1314. The number of the connecting portions 1323 corresponds to the number of the through holes 1313a; and the number of the limiting portions 1324 corresponds to the number of the second limiting grooves 1314. The cooperation between the connecting portion 1323 and the through hole 1313 a and the cooperation between the limiting portion 1324 and the second limiting groove 1314 enable the sealing member 132 to be reliably fixed to the brim 1312 of the bushing body 131 .

[0048] In this embodiment, the seal 132 can be formed on the bushing body 131 by an overmolding process, so that the seal 132 is reliably fixed to the bushing body 131 and has excellent sealing performance.

[0049] Please refer to Figures 9 - 12 , Figure 9 is a schematic diagram of the structure of a sealing bushing provided in some other embodiments of the present application, Figure 10 is a cross-sectional view of a sealing bushing provided in some other embodiments of the present application, Figure 11is an exploded schematic diagram of a sealing bushing provided in some other embodiments of the present application, Figure 12 1 is a cross-sectional view of a bushing body provided in some other embodiments of the present application. In other embodiments, the brim 1312 is provided with a plurality of second limiting grooves 1314. The plurality of second limiting grooves 1314 are distributed around the inner wall of the cylinder 1311. The second limiting groove 1314 is connected to the first limiting groove 1313. An annular groove 1315 is provided on the side of the brim 1312 away from the second limiting groove 1314. The annular groove 1315 is connected to the second limiting groove 1314. The sealing member 132 also includes a sealing ring 1325 and a plurality of limiting portions 1324. The plurality of limiting portions 1324 are distributed around the base 1322. The limiting portion 1324 is connected between the base 1322 and the sealing ring 1325. The limiting portion 1324 is arranged in the second limiting groove 1314. The sealing ring 1325 is arranged in the annular groove 1315. Among them, the number of the limiting portions 1324 corresponds to the number of the second limiting grooves 1314. The cooperation between the limiting portion 1324 and the second limiting groove 1314 and the cooperation between the sealing ring 1325 and the annular groove 1315 enable the sealing member 132 to be reliably fixed to the brim 1312 of the bushing body 131 .

[0050] In this embodiment, the sealing ring 1325 can also prevent water vapor from entering between the sealing bushing 130 and the first hinge hole 111 or the second hinge hole 121, thereby corroding the hole wall.

[0051] In this embodiment, the seal 132 can be molded on the bushing body 131 by a two-color injection molding process, so that the seal 132 is reliably fixed to the bushing body 131 and has excellent sealing performance.

[0052] The sealing bushing 130 provided in the present application is applied to the electric pedal device 100, and the sealing bushing 130 includes: a bushing body 131, including a cylinder 1311 and a brim 1312, and the brim 1312 is connected to the cylinder 1311; a sealing member 132, fixed to the brim 1312, and having a sealing portion 1321, and the sealing portion 1321 surrounds the inner wall of the cylinder 1311; wherein, when the transmission shaft 160 is inserted into the cylinder 1311, the sealing portion 1321 can be elastically deformed and abut against the transmission shaft 160. In this way, the sealing bushing 130 can avoid the accumulation of sand and dust during use, thereby eliminating abnormal noise and improving user experience.

[0053] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A sealing bushing, applied to an electric pedal device, characterized in that: include: The bushing body comprises a cylinder and a brim, wherein the brim is connected to the cylinder; A sealing member fixed to the brim, wherein the sealing member has a sealing portion surrounding the inner wall of the cylinder; Wherein, when the transmission shaft passes through the interior of the cylinder, the sealing portion can abut against the transmission shaft through elastic deformation.

2. The sealing bushing according to claim 1, characterized in that: The sealing portion has an annular flat surface and an annular inclined surface, the annular flat surface is farther away from the brim than the annular inclined surface, and the annular flat surface and the annular inclined surface can intersect to form an acute angle when extending toward the center line of the cylinder.

3. The sealing bushing according to claim 2, characterized in that: The acute angle is any value between 15° and 60°.

4. The sealing bushing according to claim 2, characterized in that: The sealing portion further has an annular arc surface connected between the inner end of the annular flat surface and the inner end of the annular inclined surface.

5. The sealing bushing according to claim 1, characterized in that: The bushing body is provided with a first limiting groove at one end close to the brim, and the first limiting groove is communicated with the interior of the cylinder. The seal also has a base, which is arranged in the first limiting groove, and the sealing part is connected to the side of the base away from the first limiting groove.

6. The sealing bushing according to claim 5, characterized in that: The first limiting groove and the cylinder are located on the same center line.

7. The sealing bushing according to claim 5, characterized in that: A plurality of through holes are arranged at the bottom of the first limiting groove, and the plurality of through holes are distributed around the inner wall of the cylinder; a plurality of second limiting grooves are arranged on the side of the cap brim away from the first limiting groove, and the second limiting grooves are connected with the through holes; the sealing member further comprises a plurality of connecting parts and a plurality of limiting parts, the connecting parts are connected between the base and the limiting parts, the connecting parts are passed through the through holes, and the limiting parts are arranged in the second limiting grooves.

8. The sealing bushing according to claim 7, characterized in that: The sealing element is formed on the bushing body by an overmolding process.

9. The sealing bushing according to claim 5, characterized in that: The brim is provided with a plurality of second limiting grooves, which are distributed around the inner wall of the cylinder, and the second limiting groove is communicated with the first limiting groove. An annular groove is provided on the side of the brim away from the second limiting groove, and the annular groove is communicated with the second limiting groove. The sealing member also includes a sealing ring and a plurality of limiting parts, which are distributed around the base, and the limiting part is connected between the base and the sealing ring. The limiting part is arranged in the second limiting groove, and the sealing ring is arranged in the annular groove.

10. The sealing bushing according to claim 9, characterized in that: The sealing element is formed on the bushing body by a two-color injection molding process.

11. An electric pedal device, characterized in that: include: A mounting seat, provided with a first hinge hole; The telescopic rod is provided with a second hinge hole; A sealing bushing, inserted through the first hinge hole and the second hinge hole; a first swing arm and a second swing arm, wherein one end of the first swing arm and the second swing arm is hinged to the mounting seat, and the other end of the first swing arm and the second swing arm is hinged to the telescopic rod; A transmission shaft, wherein the middle portion of the transmission shaft is passed through the first swing arm or the second swing arm, and both ends of the transmission shaft are passed through the sealing bushing; A motor assembly drivingly connected to at least one of the transmission shafts; A pedal body, fixed to the telescopic rod; Wherein, the sealing bushing is a sealing bushing as described in any one of claims 1-10.

12. A vehicle, characterized in that: Comprising the electric pedal device as claimed in claim 11.

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