Flexible shaft via hole sealing sleeve, flexible shaft via hole sealing structure and vehicle

Abstract

This utility model relates to the field of mechanical devices that transmit motion in flexible sheaths, and particularly to a flexible shaft through-hole sealing sleeve, a flexible shaft through-hole sealing structure, and a vehicle. The flexible shaft through-hole sealing sleeve includes a sleeve body, the inner hole of which forms a through hole for the flexible shaft to pass through. The sleeve body has a flexible shaft sealing structure for an interference fit with the flexible shaft, and an insertion section for insertion into the through-hole. The insertion section has a sealing protrusion for an interference fit with the hole wall of the through-hole. In use, the sleeve body can be directly inserted into the corresponding through-hole through the insertion section to achieve fixation of the sleeve body and a sealing fit with the substrate where the through-hole is located. The installation process is time-saving and labor-saving, eliminating the need to consider the matching of the sleeve body length and the substrate thickness, thus making the flexible shaft through-hole sealing sleeve more versatile. Furthermore, since the sealing fit with the hole wall is achieved through the sealing protrusion, sufficient sealing area is ensured, thereby optimizing the sealing effect with the through-hole.

Description

Technical Field

[0001] This utility model relates to the field of mechanical devices that transmit motion in a flexible sheath, and in particular to a flexible shaft through-hole sealing sleeve, a flexible shaft through-hole sealing structure, and a vehicle. Background Technology

[0002] The gearshift control cable connects to the vehicle interior through an opening in the floor, originating from outside the vehicle. To ensure overall vehicle sealing, the area where the cable passes through this opening requires sealing. Sealing with sealant is a common method in current vehicles, but it's difficult to control the precision of the sealant application. Residue can easily accumulate, affecting the vehicle's appearance, and the sealing effectiveness is also affected by the application precision. Incomplete sealing can lead to water ingress, compromising the vehicle's overall airtightness. Furthermore, the sealant application process is relatively complex, and inconsistent results can affect vehicle uniformity.

[0003] The patent specifications with authorization announcement numbers CN207687344U, CN220031871U, and CN111720422A disclose solutions for sealing the through hole position of the flexible shaft using a sealing sleeve. However, in the technical solutions disclosed in the above patent specifications or patent applications, the sealing sleeve is connected to the substrate where the through hole is located by connecting bolts, which involves drilling holes in the substrate and installing connecting bolts, resulting in complex installation processes and low installation efficiency.

[0004] Patent specifications CN203920631U and CN204985733U disclose another type of through-hole sealing structure, specifically a through-hole sealing gasket (actually a sealing sleeve structure). The through-hole sealing gaskets disclosed in these two patent specifications are installed on the substrate where the through-hole is located by a snap-fit ​​method using a groove on its base, thereby reducing the steps of drilling bolt holes and installing bolts. Taking the sealing gasket disclosed in patent specification CN204985733U as an example, the sealing gasket includes an integral straight pipe section, a corrugated section, and a snap-fit ​​section. The snap-fit ​​section has a groove that can mate with the two sides of the corresponding substrate to snap the sealing gasket into the through-hole. The straight pipe section and the flexible shaft passing through it are press-fitted to form a sealing fit structure. The corrugated section connects the straight pipe section and the snap-fit ​​section.

[0005] While installing sealing components via snap-fit ​​eliminates the need for drilling bolt holes and installing bolts, it places high demands on the consistency between the slot width and the substrate thickness. Otherwise, issues such as insufficient or non-secure engagement may occur. Insufficient engagement will result in seal failure at that location, while non-secure engagement will prevent reliable installation of the gasket. Furthermore, even when the slot width and substrate thickness match, the sealing effect still needs improvement due to the relatively small number of sealing areas. Utility Model Content

[0006] The purpose of this utility model is to provide a flexible shaft through-hole sealing sleeve to solve the problems of poor versatility and poor sealing effect of existing flexible shaft through-hole sealing sleeves.

[0007] Meanwhile, the purpose of this utility model is also to provide a flexible shaft through-hole sealing structure using the above-mentioned flexible shaft through-hole sealing sleeve and a vehicle.

[0008] To solve the above problems, the flexible shaft through-hole sealing sleeve of this utility model adopts the following technical solution: the flexible shaft through-hole sealing sleeve includes a sleeve body, the inner hole of the sleeve body forms a through hole for the flexible shaft to pass through, the sleeve body is provided with a flexible shaft sealing structure for interference sealing with the flexible shaft, and an insert section for insertion into the through hole, the insert section is provided with a sealing protrusion for interference sealing with the hole wall of the through hole.

[0009] Furthermore, the sealing protrusion is an annular protrusion and is arranged in multiple axially spaced along the sleeve body.

[0010] Furthermore, the cross-section of the annular protrusion is serrated, and the front face of the serration is closer to the tail end of the insertion segment in the insertion direction than the back face of the serration.

[0011] Furthermore, a limiting flange is provided on the sleeve at the tail end of the insertion section in the insertion direction of the insertion section.

[0012] Furthermore, the flexible shaft sealing structure is located at the end of the sleeve away from the insertion section, and the flexible shaft sealing structure and the insertion section are connected by a tapered portion.

[0013] Furthermore, the end of the flexible shaft sealing structure away from the insertion section is provided with an annular rib, which constitutes a sealing ring structure.

[0014] Furthermore, the flexible shaft sealing structure is composed of a flexible shaft sealing section provided on the sleeve that is interference-fitted with the flexible shaft.

[0015] Furthermore, the flexible shaft sealing structure is an elastic sealing structure.

[0016] The beneficial effects of the flexible shaft through-hole sealing sleeve: This utility model of the flexible shaft through-hole sealing sleeve is a pioneering invention. Specifically, by making the inner hole of the sleeve body a through hole for the flexible shaft to pass through, a flexible shaft sealing structure for interference fit with the flexible shaft is provided on the sleeve body, and an insert section for insertion into the through hole is provided on the insert section for interference fit with the hole wall. In use, the sleeve body can be directly inserted into the corresponding through hole through the insert section to achieve fixation of the sleeve body and sealing fit with the substrate where the through hole is located. The installation process is time-saving and labor-saving. Moreover, since it is fixed by interference fit with the hole wall, there is no need to consider the matching of the sleeve body length and the substrate thickness, making the flexible shaft through-hole sealing sleeve more versatile. In addition, since the sealing fit with the hole wall is achieved by the sealing protrusion, sufficient sealing area can be ensured, thereby optimizing the sealing effect with the through hole.

[0017] The flexible shaft through-hole sealing structure adopts the following technical solution:

[0018] A flexible shaft through-hole sealing structure includes a flexible shaft, a flexible shaft through-hole sealing sleeve, and a base plate on which the flexible shaft through-hole sealing sleeve is located. The flexible shaft through-hole sealing sleeve includes a sleeve body, the inner hole of which forms a through hole for the flexible shaft to pass through. The sleeve body is provided with a flexible shaft sealing structure for interference sealing with the flexible shaft, and an insert section for insertion into the through hole. The insert section is provided with a sealing protrusion for interference sealing with the hole wall of the through hole.

[0019] Furthermore, the sealing protrusion is an annular protrusion and is arranged in multiple axially spaced along the sleeve body.

[0020] Furthermore, the cross-section of the annular protrusion is serrated, and the front face of the serration is closer to the tail end of the insertion segment in the insertion direction than the back face of the serration.

[0021] Furthermore, a limiting flange is provided on the sleeve at the tail end of the insertion section in the insertion direction of the insertion section.

[0022] Furthermore, the flexible shaft sealing structure is located at the end of the sleeve away from the insertion section, and the flexible shaft sealing structure and the insertion section are connected by a tapered portion.

[0023] Furthermore, the end of the flexible shaft sealing structure away from the insertion section is provided with an annular rib, which constitutes a sealing ring structure.

[0024] Furthermore, the flexible shaft sealing structure is composed of a flexible shaft sealing section provided on the sleeve that is interference-fitted with the flexible shaft.

[0025] Furthermore, the flexible shaft sealing structure is an elastic sealing structure.

[0026] The beneficial effects of the flexible shaft through-hole sealing structure: The flexible shaft through-hole sealing structure of this utility model is an improved invention. Specifically, by making the inner hole of the sleeve a through hole for the flexible shaft to pass through, a flexible shaft sealing structure for interference fit with the flexible shaft is provided on the sleeve, and an insert section for insertion into the through hole is provided on the insert section for interference fit with the hole wall of the through hole. In use, the sleeve can be directly inserted into the corresponding through hole through the insert section to achieve fixation of the sleeve and sealing fit with the substrate where the through hole is located. The installation process is time-saving and labor-saving. Moreover, since it is fixed by interference fit with the hole wall of the through hole, there is no need to consider the matching of the sleeve length and the substrate thickness, making the flexible shaft through-hole sealing sleeve more versatile. In addition, since the sealing fit with the hole wall of the through hole is achieved by the sealing protrusion, it can ensure that there is sufficient sealing area, thereby optimizing the sealing effect with the through hole.

[0027] The vehicle adopts the following technical solutions:

[0028] A vehicle includes a flexible shaft through-hole sealing structure, the flexible shaft through-hole sealing structure including a flexible shaft, a flexible shaft through-hole sealing sleeve and a base plate on which the flexible shaft through-hole sealing sleeve is located, the flexible shaft through-hole sealing sleeve including a sleeve body, the inner hole of the sleeve body forming a through hole for the flexible shaft to pass through, the sleeve body having a flexible shaft sealing structure for interference sealing fit with the flexible shaft, and an insert section for insertion into the through hole, the insert section having a sealing protrusion for interference sealing fit with the hole wall of the through hole.

[0029] Furthermore, the sealing protrusion is an annular protrusion and is arranged in multiple axially spaced along the sleeve body.

[0030] Furthermore, the cross-section of the annular protrusion is serrated, and the front face of the serration is closer to the tail end of the insertion segment in the insertion direction than the back face of the serration.

[0031] Furthermore, a limiting flange is provided on the sleeve at the tail end of the insertion section in the insertion direction of the insertion section.

[0032] Furthermore, the flexible shaft sealing structure is located at the end of the sleeve away from the insertion section, and the flexible shaft sealing structure and the insertion section are connected by a tapered portion.

[0033] Furthermore, the end of the flexible shaft sealing structure away from the insertion section is provided with an annular rib, which constitutes a sealing ring structure.

[0034] Furthermore, the flexible shaft sealing structure is composed of a flexible shaft sealing section provided on the sleeve that is interference-fitted with the flexible shaft.

[0035] Furthermore, the flexible shaft sealing structure is an elastic sealing structure.

[0036] Beneficial effects of the vehicle: The vehicle of this utility model is an improved invention. Specifically, the vehicle of this utility model has a through hole formed in the inner hole of the sleeve for the flexible shaft to pass through. A flexible shaft sealing structure for interference fit with the flexible shaft is provided on the sleeve, as well as an insert section for insertion into the through hole. A sealing protrusion for interference fit with the hole wall of the through hole is provided on the insert section. In use, the sleeve can be directly inserted into the corresponding through hole through the insert section to achieve fixation of the sleeve and sealing fit with the substrate where the through hole is located. The installation process is time-saving and labor-saving. Moreover, since it is fixed by interference fit with the hole wall of the through hole, there is no need to consider the matching of the sleeve length and the substrate thickness, making the flexible shaft through hole sealing sleeve more versatile. In addition, since the sealing fit with the hole wall of the through hole is achieved by the sealing protrusion, sufficient sealing area can be ensured, thereby optimizing the sealing effect with the through hole. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of one embodiment of the flexible shaft through-hole sealing sleeve of this utility model;

[0038] Figure 2 This is a schematic diagram of one embodiment of the flexible shaft through-hole sealing structure of this utility model.

[0039] In the diagram: 1. Gear shift control shaft; 2. Interior floor; 3. Sleeve; 301. Flexible shaft sealing structure; 302. Insert section; 303. Sealing protrusion; 304. Front of gear; 305. Back of gear; 306. Limiting flange; 307. Conical part; 308. Annular rib. Detailed Implementation

[0040] The features and performance of this utility model will be further described in detail below with reference to specific embodiments.

[0041] In existing vehicle transmission systems, drivers often need to select the vehicle gear by operating a lever. Manual transmissions select the vehicle's speed gear, while automatic transmissions select the vehicle's driving mode. In order to transmit the operation of the lever to the transmission, the vehicle is equipped with a gear shifting shaft. The gear shifting shaft 1 is a flexible shaft, with one end connected to the lever via a connecting mechanism and the other end connected to the shift arm or selector arm in the transmission. The gear can be selected by operating the lever, thereby realizing gear shifting.

[0042] The gear shift control shaft, as a transmission component connecting the control handle and the gear shift system, needs to pass through the vehicle's interior floor 2. After a hole is drilled in the vehicle's interior floor 2, the gear shift control shaft 1 passes through the hole from the outside of the vehicle and connects to the inside. To ensure the sealing of the vehicle's interior space, a sealing treatment is required between the gear shift control shaft 1 and the floor through hole. If a flexible shaft through hole sealing sleeve can be provided, it can achieve high assembly efficiency and versatility while ensuring sealing performance, thus solving the above problems. Based on the above concept, this utility model provides a flexible shaft through hole sealing sleeve, a flexible shaft through hole sealing structure, and a vehicle-specific technical solution.

[0043] Based on the above concept, the specific implementation of the flexible shaft through-hole sealing sleeve of this utility model is as follows:

[0044] like Figure 1-2 As shown, the flexible shaft through-hole sealing sleeve includes a sleeve body 3, which has an inner hole extending through both ends, forming a perforation for the flexible shaft to pass through, so that one end of the flexible shaft is inside the vehicle and the other end is outside the vehicle. In order to block the perforation inside the sleeve body 3, a flexible shaft sealing structure 301 is provided on the sleeve body 3 for interference sealing with the flexible shaft. The flexible shaft sealing structure 301, through interference fit with the outer circumferential surface of the flexible shaft, can block any gaps that may exist between the two, thereby preventing dust, water, etc. from entering the vehicle from outside along the perforation into the vehicle.

[0045] To facilitate installation of the sleeve 3 into the through hole, an insertion section 302 is provided on the sleeve 3. The insertion section 302 can be inserted into the corresponding through hole for fixation. To prevent external dust or water from entering the vehicle interior through the gap between the sleeve and the through hole, a sealing protrusion 303 is provided on the insertion section 302 for interference-sealing with the hole wall of the through hole. The interference fit allows for direct fixation of the insertion section 302 after insertion into the through hole, achieving "insertion and fixation" for quick and convenient installation. The sealing fit blocks any gaps that may exist between the sleeve 3 and the through hole, achieving a sealing effect. To block the gap between the through hole and the insertion section 302, the sealing protrusion 303 can be of any shape and arrangement, which should be understood by those skilled in the art and will not be elaborated here.

[0046] When using this flexible shaft through-hole sealing sleeve, the flexible shaft can be passed through the inner hole of the sleeve body 3. The through-hole of the sleeve body 3 is blocked by the interference seal between the flexible shaft sealing structure 301 and the flexible shaft. The insertion section 302 of the sleeve body 3 is inserted into the corresponding through-hole. At the same time as insertion, the sealing protrusion 303 is interference sealed with the inner wall of the through-hole, which not only fixes the sleeve body 3 as a whole, but also blocks any gaps that may exist between the sleeve body 3 and the through-hole. It is not only easy and quick to install, but also obtains sufficient sealing area and interference pressure by cooperating with the wall of the through-hole, resulting in a better sealing effect.

[0047] In a preferred embodiment, the sealing protrusion 303 is an annular protrusion and multiple protrusions are arranged at intervals along the axial direction of the sleeve. Using multiple annular protrusions arranged along the axial direction of the sleeve can reduce the resistance of threaded wire while achieving the desired sealing effect. It should be noted that the "annular" in "annular protrusion" refers to the protrusions being connected end-to-end to form a closed structure. After the annulus is unfolded, the line it forms can be a straight line or a wavy line.

[0048] Although multiple sealing protrusions 303 are provided in the above embodiments, those skilled in the art should understand that in other embodiments, only one annular sealing protrusion may be provided. In this case, the width of the annular sealing protrusion (corresponding to the axial direction of the sleeve) can be designed to ensure that it has a certain sealing effect.

[0049] In addition, such as Figure 1-2 As shown, in a preferred embodiment, the cross-section of the annular protrusion is serrated, and the front face 304 of the serration is closer to the tail end of the insertion segment 302 in the insertion direction than its back face 305. By adopting this structure, on the one hand, the resistance when the insertion segment 302 is inserted into the through hole can be reduced, and on the other hand, the annular protrusion can form a structure similar to an expanded barb, thereby increasing the bonding force between the insertion segment 302 and the through hole and preventing it from loosening after insertion.

[0050] Although the annular protrusion in the above embodiments uses a serrated cross-section, those skilled in the art should understand that it is not necessary to use an annular protrusion with a serrated cross-section in order to meet the requirements of interference fit and sealing fit. In some other embodiments, the cross-sectional shape of the annular protrusion can also be rectangular, trapezoidal, arc-shaped, etc., or even an irregular structure, which will not be elaborated here.

[0051] To limit the installation depth of the insert segment 302, in a preferred embodiment, a limiting flange 306 is provided on the sleeve 3 at the tail end of the insert segment in the insertion direction of the insert segment 302. Figure 1-2 In the illustrated embodiment, the limiting flange 306 is an annular flange, which, when mated with the edge of the through hole, can also provide a sealing effect. However, if the limiting requirement is only to be met, the limiting flange 306 can also be one or more protrusions arranged around the center of the sleeve body; this will not be elaborated further here.

[0052] To achieve an interference seal fit with the flexible shaft, those skilled in the art will understand that the flexible shaft sealing structure 301 can be located at any position on the sleeve. As a preferred embodiment, such as... Figure 1-2As shown, the flexible shaft sealing structure 301 is located at the end of the sleeve away from the insertion section 302, and the flexible shaft sealing structure 301 and the insertion section 302 are connected by a tapered portion 307. This allows it to seal with the flexible shaft from the end, preventing the formation of dust or water accumulation grooves between them, thereby avoiding potential leakage problems. Furthermore, as a preferred embodiment, an annular rib 308 is provided at the end of the flexible shaft sealing section away from the insertion section. This annular rib forms a sealing ring structure. The annular rib effectively thickens the wall of the corresponding end of the sleeve, providing a greater interference fit force and reinforcing that end to prevent it from cracking or tearing during use.

[0053] The seal between the flexible shaft sealing structure 301 and the flexible shaft can be a line seal or a surface seal. Obviously, a surface seal has a larger sealing area and a better sealing effect than a line seal. Therefore, in a preferred embodiment, the flexible shaft sealing structure 301 is composed of a flexible shaft sealing section on the sleeve that is interference-fitted with the flexible shaft.

[0054] To accommodate flexible shafts of different diameters, the flexible shaft sealing structure 301 is an elastic sealing structure. Specifically, a material with a certain degree of elasticity, such as rubber, can be used as the material for the sleeve, thus giving the flexible shaft sealing structure a certain degree of elasticity. For example, the sleeve 3 can be molded as a whole using a mold. Of course, in other embodiments, to ensure that the insertion section 302 has higher rigidity and that the flexible shaft sealing structure 301 has better elasticity, the sleeve 3 can also be designed as a split structure, and the different parts of the split structure can be fixed together by means of bonding, welding, etc.

[0055] The specific implementation of the flexible shaft through-hole sealing structure of this utility model is as follows:

[0056] The flexible shaft through-hole sealing structure includes a flexible shaft, a flexible shaft through-hole sealing sleeve, and a base plate on which the flexible shaft through-hole sealing sleeve is located. The base plate is the vehicle floor 2, and the flexible shaft through-hole sealing sleeve is the flexible shaft through-hole sealing sleeve of this utility model. Since the structure and usage of the flexible shaft through-hole sealing sleeve have been described in detail above, they will not be repeated here.

[0057] The specific implementation method of the vehicle of this utility model is as follows:

[0058] The vehicle includes a flexible shaft through-hole sealing structure, wherein the flexible shaft through-hole sealing structure is the flexible shaft through-hole sealing structure of this utility model, and will not be described in detail here.

[0059] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A flexible shaft via seal sleeve characterized by, The device includes a sleeve, the inner hole of which forms a through hole for a flexible shaft to pass through. The sleeve is provided with a flexible shaft sealing structure for interference sealing with the flexible shaft, and an insert section for insertion into the through hole. The insert section is provided with a sealing protrusion for interference sealing with the hole wall of the through hole.

2. The soft shaft via seal sleeve of claim 1, wherein, The sealing protrusion is an annular protrusion and multiple protrusions are arranged at intervals along the axial direction of the sleeve.

3. The soft shaft via seal sleeve of claim 2, wherein, The cross-section of the annular protrusion is serrated, and the front face of the serration is closer to the tail end of the insertion segment in the insertion direction than the back face of the serration.

4. The flexible shaft via seal of any of claims 1-3, wherein, The sleeve body is provided with a limiting flange at the tail end of the insertion section in the insertion direction of the insertion section.

5. The flexible shaft via seal of any of claims 1-3, wherein, The flexible shaft sealing structure is located at the end of the sleeve away from the insertion section, and the flexible shaft sealing structure and the insertion section are connected by a tapered section.

6. The soft-shaft via seal sleeve of claim 5, wherein, The flexible shaft sealing structure has an annular rib at the end away from the insertion section, which forms a sealing ring structure.

7. The soft-shaft via seal sleeve of claim 5, wherein, The flexible shaft sealing structure consists of a flexible shaft sealing section on the sleeve that is interference-fitted with the flexible shaft.

8. The flexible shaft via seal of claim 1 or 6 or 7, wherein, The flexible shaft sealing structure is an elastic sealing structure.

9. A flexible shaft via hole sealing structure, comprising a flexible shaft, a flexible shaft via hole sealing sleeve and a substrate on which the flexible shaft via hole sealing sleeve is located, characterized in that, The flexible shaft through-hole sealing sleeve is the flexible shaft through-hole sealing sleeve according to any one of claims 1-8.

10. A vehicle comprising a soft shaft via seal structure, characterized by, The flexible shaft through-hole sealing structure is the flexible shaft through-hole sealing structure as described in claim 9.

Images