Support member

Abstract

To prevent a rod-like member from coming off from an elastic member.SOLUTION: The support member has a rod shape, is included in a support structure provided in a vehicle to support an exhaust component, and includes a high friction region that is a region on an outer peripheral surface of the support member and is a region having a higher friction coefficient than other regions. The support member is configured to support the exhaust component in a state of being inserted into the hole portion of the elastic member included in the support structure. The high friction region is located at a portion of the support member that is inserted into the hole portion of the elastic member.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a support member used to support an exhaust component of a vehicle. [Background technology]

[0002] As disclosed in Patent Document 1, a technique for attaching a vehicle exhaust component to a vehicle body is known, using a first elastic member and a second elastic member inserted into a hole that penetrates the first elastic member. In the technique disclosed in Patent Document 1, a first end portion of a rod-shaped vehicle body support member is inserted into a hole in the first elastic member, and a second end is attached to the vehicle body. Also, a first end portion of a rod-shaped exhaust pipe support member is inserted into a hole in the second elastic member, and the second end is attached to the exhaust pipe. The exhaust pipe is then supported from above by the vehicle body support member, the exhaust pipe support member, and the first and second elastic members. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-101201 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with the technique disclosed in Patent Document 1, there is a risk that the vehicle body side support member may come off the first elastic member, or the exhaust pipe support member may come off the second elastic member. In one aspect of the present disclosure, it is desirable to prevent the rod-shaped member from slipping out of the elastic member. [Means for solving the problem]

[0005] One aspect of the present disclosure is a rod-shaped support member included in a support structure provided on a vehicle for supporting an exhaust part, the support member including a high-friction region, which is a region on the outer circumferential surface of the support member that has a higher coefficient of friction than other regions. The support member is configured to support the exhaust part when inserted into a hole in an elastic member included in the support structure. The high-friction region is located in the portion of the support member that is inserted into the hole in the elastic member.

[0006] According to the above configuration, the high friction area of ​​the outer circumferential surface of the support member can be brought into contact with the elastic member, thereby preventing the support member from coming off the elastic member. In one aspect of the present disclosure, the high-friction region may be provided with irregularities to increase the coefficient of friction.

[0007] According to the above configuration, the friction coefficient in the high friction region can be suitably increased. In one aspect of the present disclosure, the high-friction region may have a higher coefficient of friction than other regions by relatively increasing the surface roughness.

[0008] According to the above configuration, the friction coefficient in the high friction region can be suitably increased. In one aspect of the present disclosure, the hole may penetrate the elastic member. The support member may further include a protrusion located at an end and thicker than the main body portion in which the high-friction region of the support member is provided. The support member may be configured to support the exhaust component with the protrusion penetrating the elastic member and protruding from the opening of the hole.

[0009] According to the above configuration, it is possible to more suitably prevent the support member from coming out of the hole in the elastic member. In one aspect of the present disclosure, the hole may penetrate the elastic member. The length of the section of the support member where the high friction region is provided may be longer than the length of the hole.

[0010] According to the above configuration, the high friction region can be brought into contact with the elastic member more reliably. In one aspect of the present disclosure, the high friction region may be provided around the outer circumferential surface of the support member.

[0011] According to the above configuration, the high friction region can be brought into contact with the elastic member more reliably. [Brief explanation of the drawings]

[0012] [Figure 1] 1A and 1B are perspective and side views of a support structure for an exhaust component; [Figure 2] 2A to 2C are explanatory diagrams of high-friction areas of the support member. [Figure 3] Fig. 3A is an explanatory diagram of a high-friction region of the support member. Fig. 3B is a cross-sectional view taken along IIIB-IIIB in Fig. 3A. Fig. 3C is an explanatory diagram of a high-friction region of the support member. Fig. 3D is an explanatory diagram of the shape of each protrusion aligned in the extension direction of the first portion in the high-friction region of Fig. 3C. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the drawings. [1. Overview] The support structure S of this embodiment is a member for supporting an exhaust part 5 of a vehicle (see FIGS. 1A and 1B). The exhaust part 5 is a part that forms a flow path for exhaust gas from the vehicle engine, and may be, for example, an exhaust pipe, a muffler, or an exhaust gas purification device. The support structure S includes first and second support members 1 and 2 and an elastic member 3, and is configured to support the exhaust part 5 from above using these members. Hereinafter, the first and second support members 1 and 2 may be simply referred to as support members.

[0014] [2. Elastic member] The elastic member 3 is a columnar member extending along an axis A, and a cross section of the elastic member 3 perpendicular to the axis A is substantially elliptical (see FIGS. 1A and 1B). The elastic member 3 is mounted on a vehicle with the axis A extending substantially horizontally. The elastic member 3 has a hollow portion 30, first and second surfaces 31 and 32, an upper hole portion 33, and a lower hole portion 34.

[0015] The first and second surfaces 31, 32 are outer surfaces located at both ends of the elastic member 3 in the direction of the axis A. The upper hole 33 and the lower hole 34 are holes that extend linearly along the direction of the axis A and penetrate the elastic member 3 from the first surface 31 to the second surface 32. The first and second support members 1 and 2 are inserted into the upper hole 33 and the lower hole 34, respectively (details will be described later). When the elastic member 3 is mounted on a vehicle, the upper hole 33 is located on the upper side, and the lower hole 34 is located on the lower side.

[0016] The upper hole 33 and the lower hole 34 have a shape corresponding to the support member to be inserted, and are cylindrical, for example. Furthermore, the upper hole 33 and the lower hole 34 are, for example, thinner than the support member to be inserted, and when the support member is inserted into the upper hole 33 and the lower hole 34, the elastic member 3 is elastically deformed. Of course, the shape and thickness of the upper hole 33 and the lower hole 34 are not limited to this, and can be determined as appropriate.

[0017] The cavity 30 is also a hole that penetrates the elastic member 3 from the first surface 31 to the second surface 32, and is located between the upper hole 33 and the lower hole . [3. First support member] The first support member 1 is a rod-shaped member, and as an example, is a substantially cylindrical member curved in an L-shape (see FIGS. 1A and 1B). Of course, the shape of the first support member 1 can be determined as appropriate. Also, as an example, the first support member 1 is an integrated member made of metal. The first support member 1 includes first and second portions 11 and 14 and a curved portion 15 that is a curved part located between the first and second portions 11 and 14.

[0018] <Part 1> The first portion 11 extends linearly from the first end 1A to the curved portion 15. The first portion 11 includes a protruding portion 12 located at the first end 1A, and a main body portion 13 extending from the protruding portion 12 to the curved portion 15 (see FIGS. 2A to 2C).

[0019] The protruding portion 12 has a diameter larger (in other words, thicker) than the main body portion 13, and has an apex 12A that protrudes laterally beyond the main body portion 13. The apex 12A is provided so as to go around the protruding portion 12 in the circumferential direction centered on the first portion 11. Also, as one example, the protruding portion 12 is formed so that the apex 12A is closer to the main body portion 13 than the first end 1A, and the apex 12A and its surrounding area are rounded.

[0020] When the first support member 1 is mounted on the vehicle, the first portion 11 extends in a substantially horizontal direction. The first portion 11 is inserted into the upper hole 33 of the elastic member 3 from the first surface 31 side and passes through the elastic member 3. Specifically, the main body 13 is inserted into the upper hole 33, and the protrusion 12 is disposed adjacent to the second surface 32 so as to protrude from the opening of the upper hole 33 of the elastic member 3. The end of the main body 13 on the curved portion 15 side protrudes from the first surface 31 of the elastic member 3.

[0021] <Second part> The second portion 14 extends linearly from the second end 1B to the curved portion 15 in a direction substantially perpendicular to the first portion 11.

[0022] When the first support member 1 is mounted on a vehicle, the second portion 14 extends upward from the curved portion 15 in a substantially vertical direction. The second portion 14 is joined to the vehicle body 4. In the present embodiment, as an example, the second end 1B located at the upper end of the support structure S is joined to the vehicle body 4, but this is not limiting, and for example, the outer peripheral surface 10 of the second portion 14 may be joined to the vehicle body 4.

[0023] [4. Second support member] The second support member 2 has the same configuration as the first support member 1, and when mounted on the vehicle, is disposed below the first support member 1. The second support member 2 includes first and second portions 21, 24 and a curved portion 25 (see FIGS. 1A and 1B).

[0024] <Part 1> The first portion 21 is configured similarly to the first portion 11 of the first support member 1, and includes a protruding portion 22 and a main body portion 23 (see FIGS. 2A to 2C).

[0025] When the second support member 2 is mounted on the vehicle, the first portion 21 extends in a substantially horizontal direction. The first portion 21 is inserted into the lower hole 34 of the elastic member 3 from the second surface 32 side and passes through the elastic member 3. Specifically, the main body 23 is inserted into the lower hole 34, and the protruding portion 22 is disposed adjacent to the first surface 31 so as to protrude from the opening of the lower hole 34 of the elastic member 3. The end of the main body 23 on the curved portion 25 side protrudes from the second surface 32 of the elastic member 3.

[0026] <Second part> The second portion 24 is configured similarly to the second portion 14 of the first support member 1 . When the second support member 2 is mounted on the vehicle, the second portion 24 extends downward from the curved portion 25 in a substantially vertical direction. The second portion 24 is joined to an exhaust component 5 of the vehicle. In the present embodiment, as an example, a portion of the outer peripheral surface 20 of the second portion 24 near the second end 2B is joined to the outer peripheral surface of the exhaust component 5. However, the present invention is not limited to this, and for example, the second end 2B may be joined to the outer peripheral surface of the exhaust component 5.

[0027] In this way, in the support structure S, the first portions 11, 21 of the first and second support members 1, 2 are inserted into the elastic member 3 in the manner described above, thereby connecting the first and second support members 1, 2 via the elastic member 3. The exhaust part 5 is then supported from above by the connected first and second support members 1, 2. By providing the elastic member 3, it becomes possible to support the exhaust part 5 while absorbing vehicle vibrations.

[0028] [5. High friction area] <High friction area of ​​the first support member> A high-friction region 10A is provided on the outer peripheral surface 10 of the main body 13 of the first portion 11 of the first support member 1 (see FIGS. 2A to 2C). The high-friction region 10A has a higher coefficient of friction than other regions on the outer peripheral surface 10. The high-friction region 10A is located in a portion of the main body 13 that is inserted into the upper hole 33 of the elastic member 3, and abuts against the elastic member 3.

[0029] Specifically, high-friction region 10A spreads from or near the end of main body 13 on the protrusion 12 side. The distance in the extension direction of first portion 11 of the portion of main body 13 where high-friction region 10A is provided, in other words, the distance of the section where high-friction region 10A is provided, is equal to or greater than length L of upper hole 33. High-friction region 10A is provided so as to go around outer peripheral surface 10 of main body 13 in the circumferential direction centered on first portion 11.

[0030] <High friction area of ​​the second support member> A high-friction region 20A similar to that of the first support member 1 is also provided on the outer peripheral surface 20 of the main body 23 of the first portion 21 of the second support member 2 (see FIGS. 2A to 2C). The high-friction region 20A is also located in a portion of the main body 23 that is inserted into the lower hole 34 of the elastic member 3, and abuts against the elastic member 3.

[0031] High-friction region 20A extends from or near the end of main body 23 of first portion 21 on the protrusion 22 side. The distance in the extension direction of first portion 21 of the section of main body 23 where high-friction region 20A is provided is equal to or greater than length L of lower hole 34. High-friction region 20A is provided so as to go around outer peripheral surface 20 of main body 23 in the circumferential direction with first portion 21 as the center.

[0032] <Modification> The length of the section in which the high-friction regions 10A, 20A are provided in the main body portions 13, 23 may be less than the length L of the upper hole portion 33 or the lower hole portion 34.

[0033] Furthermore, the high friction regions 10A, 20A do not necessarily have to be provided so as to extend in the circumferential direction of the main body portions 13, . Furthermore, for example, the main body portions 13, 23 may be provided with a plurality of separate high friction regions, and these high friction regions may be arranged side by side along the extension direction or along the circumferential direction.

[0034] [6. High friction area configuration] In the high-friction regions 10A, 20A, numerous minute irregularities are provided on the outer circumferential surfaces 10, 20 of the main body portions 13, 23 of the first portions 11, 21 of the support member (see FIGS. 2A to 2C), which increases the contact area with the elastic member 3 and increases the coefficient of friction.

[0035] Specifically, the high-friction regions 10A, 20A may be formed by relatively increasing the surface roughness of the outer peripheral surfaces 10, 20 by, for example, embossing, blasting, debossing, or the like (see FIG. 2A). Of course, the processing methods are not limited to these, and various processing methods for increasing the surface roughness can be used.

[0036] Alternatively, the high-friction regions 10A, 20A may be formed by, for example, continuously providing a large number of minute recesses and protrusions on the outer peripheral surfaces 10, 20, extending in the circumferential direction around the main body portions 13, 23 along the extension direction of the first portions 11, 21. These recesses and protrusions may be formed along a circular path (see FIG. 2B) or a spiral path (see FIG. 2C).

[0037] Furthermore, when forming recesses and protrusions extending along a circular path, a plurality of recesses and protrusions may be formed in the circumferential direction for each protrusion aligned in the extension direction. Specifically, as shown in Figures 3A to 3D, each protrusion may further have a plurality of protrusions P, P1 to P4 of the same shape formed in the circumferential direction.

[0038] In addition, in FIGS. 3A and 3B, as an example, the circumferential positions of the tops of the multiple protrusions P in each convex portion aligned in the extension direction are the same. 3C and 3D, the circumferential positions of the apexes of the multiple protrusions in each convex portion are offset. Specifically, first to fourth patterns are provided as types of convex portions, and the positions of the apexes of each of the protrusions P1 to P4 in the convex portions of each pattern are offset in the circumferential direction. Furthermore, the types of each convex portion are determined so that the arrangement of the first to fourth patterns is repeated from the protrusion side toward the curved portion side. The angle by which the positions of the apexes of the protrusions of two adjacent convex portions are offset in the circumferential direction is approximately constant.

[0039] [7. Effects] (1) According to the above embodiment, the high-friction regions 10A, 20A provided on the outer circumferential surfaces 10, 20 of the main bodies 13, 23 of the first portions 11, 21 of the support member can be brought into contact with the elastic member 3. This makes it possible to prevent the support member from coming off the elastic member 3.

[0040] Furthermore, by providing high-friction regions 10A, 20A, it is possible to suppress movement of elastic member 3 toward curved portions 15, 25 of the support member. Therefore, it is possible to suppress movement of elastic member 3 toward curved portions 15, 25 of the support member without forming a stopper by expanding main body portions 13, 23 or forming a stopper by joining an additional member to main body portions 13, 23.

[0041] Additionally, while it may be possible to increase the diameter of main body portions 13, 23 in order to prevent the support member from falling off elastic member 3, the provision of high friction regions 10A, 20A reduces the need for such measures. In other words, the provision of high friction regions 10A, 20A makes it possible to prevent the diameter of main body portions 13, 23 from increasing.

[0042] This makes it easier to insert the support member into the elastic member 3. It also prevents an increase in the weight of the support member, and further prevents a decrease in resonance frequency that occurs as a result of an increase in the weight of the support member, thereby reducing noise. It also prevents cracks from occurring during the manufacture of the support member, making it easier to manufacture the support member.

[0043] (2) Furthermore, the high-friction regions 10A, 20A are formed by forming irregularities on the outer peripheral surfaces 10, 20 of the main body portions 13, 23 of the first portions 11, 21. As an example, the coefficient of friction is increased by relatively increasing the surface roughness of the outer peripheral surfaces 10, 20. Therefore, the coefficient of friction of the high-friction regions 10A, 20A can be suitably increased.

[0044] (3) Furthermore, the first ends 1A, 2A of the first portions 11, 21 of the support member are provided with protrusions 12, 22. This more effectively prevents the support member from slipping out of the upper hole 33 or the lower hole 34 of the elastic member 3.

[0045] Furthermore, the tops 12A, 22A of the protrusions 12, 22 are rounded. Therefore, when the support member is inserted into the upper hole 33 or the lower hole , damage to the elastic member 3 can be suppressed.

[0046] (4) Furthermore, the distance of the section where the high-friction regions 10A, 20A are formed in the main body portions 13, 23 of the first portions 11, 21 is longer than the length L of the upper hole portion 33 or the lower hole portion 34. Therefore, even if the position of the elastic member 3 is shifted due to, for example, vehicle vibration, the high-friction regions 10A, 20A can maintain contact with the elastic member 3.

[0047] (5) Furthermore, the high friction regions 10A, 20A are provided so as to surround the outer circumferential surfaces 10, 20 of the main body portions 13, 23. This allows the high friction regions 10A, 20A to contact the elastic member 3 more reliably.

[0048] 8. Other Embodiments (1) The support structure S in the above embodiment is configured to include first and second support members 1 and 2 and an elastic member 3. However, the configuration of the support structure S is not limited to this, and it may include one or three or more support members, or may include multiple elastic members. Even in such cases, similar effects can be obtained by similarly providing high-friction areas on the outer peripheral surfaces of the portions of the support members 1 and 2 that are inserted into the elastic members.

[0049] In addition, exhaust components to which the second portion of the support member of the above embodiment is joined may be distributed on the market, or only the support member may be distributed on the market. Even in such cases, the same effect can be obtained by installing the support member on a vehicle with the main body of the first portion inserted into the elastic member.

[0050] (2) In the above embodiment, the first portions 11, 21 of the support member are provided with the protrusions 12, 22. However, the first portions 11, 21 of the support member do not have to be provided with the protrusions 12, 22. In this case, the upper hole 33 and the lower hole 34 of the elastic member 3 into which the first portions 11, 21 are inserted do not have to pass through the elastic member 3. In other words, the first portions 11, 21 of the support member may be inserted into the upper hole 33 or the lower hole 34 without passing through the elastic member 3.

[0051] (3) In the above embodiment, the high-friction regions 10A, 20A are formed by processing the shape of the main body portions 13, 23 of the first portions 11, 21 of the support member. However, this is not limiting, and the high-friction regions 10A, 20A may be formed, for example, by applying a predetermined coating agent to the main body portions 13, 23 to increase the friction coefficient of the outer circumferential surfaces 10, 20 of the main body portions 13, 23.

[0052] (4) Multiple functions of one component in the above embodiments may be realized by multiple components, or one function of one component may be realized by multiple components. Also, multiple functions of multiple components may be realized by one component, or one function realized by multiple components may be realized by one component. Also, part of the configuration of the above embodiments may be omitted. Also, at least part of the configuration of the above embodiments may be added to or substituted for the configuration of another of the above embodiments.

[0053] [9. Technical Ideas Disclosed in This Specification] [Item 1] A rod-shaped support member included in a support structure provided on a vehicle to support an exhaust part, a high-friction region on the outer peripheral surface of the support member, the high-friction region being a region having a higher coefficient of friction than other regions; the support member is configured to support the exhaust part in a state where it is inserted into a hole in an elastic member included in the support structure, The high-friction region is located in a portion of the support member that is inserted into the hole of the elastic member. Support material.

[0054] [Item 2] The support member according to item 1, The high-friction area is provided with irregularities to increase the coefficient of friction. Support material.

[0055] [Item 3] The support member according to item 2, The high-friction area has a relatively large surface roughness, so that the coefficient of friction is larger than that of other areas. Support material.

[0056] [Item 4] The support member according to any one of items 1 to 3, the hole penetrates the elastic member, the support member further includes a protrusion located at an end portion and thicker than a main body portion of the support member in which the high friction region is provided, The support member is configured to support the exhaust component with the support member passing through the elastic member and the protrusion protruding from the opening of the hole. Support material.

[0057] [Item 5] The support member according to any one of items 1 to 4, the hole penetrates the elastic member, The length of the section of the support member where the high friction region is provided is longer than the length of the hole. Support material.

[0058] [Item 6] The support member according to any one of items 1 to 5, The high-friction region is provided around the outer circumferential surface of the support member. Support material. [Explanation of symbols]

[0059] S...support structure, A...axis, L...length, 1...first support member, 1A...first end, 1B...second end, 10...outer surface, 10A...high friction area, 11...first portion, 12...protruding portion, 12A...top portion, 13...main body portion, 14...second portion, 15...curved portion, 2...second support member, 2A...first end, 2B...second end, 20...outer surface, 20A...high friction area, 21...first portion, 22...protruding portion, 22A...top portion, 23...main body portion, 24...second portion, 25...curved portion, 3...elastic member, 30...cavity portion, 31...first surface, 32...second surface, 33...upper hole portion, 34...lower hole portion, 4...vehicle body, 5...exhaust part.

Claims

1. A rod-shaped support member included in a support structure provided on a vehicle to support an exhaust part, a high-friction region on the outer peripheral surface of the support member, the high-friction region being a region having a higher coefficient of friction than other regions; the support member is configured to support the exhaust part in a state where it is inserted into a hole in an elastic member included in the support structure, The high-friction region is located in a portion of the support member that is inserted into the hole of the elastic member. Support material.

2. 2. The support member of claim 1, The high-friction area is provided with irregularities to increase the coefficient of friction. Support material.

3. 3. The support member according to claim 2, The high-friction area has a relatively large surface roughness, so that the coefficient of friction is larger than that of other areas. Support material.

4. The support member according to any one of claims 1 to 3, the hole penetrates the elastic member, the support member further includes a protrusion located at an end portion and thicker than a main body portion of the support member in which the high friction region is provided, The support member is configured to support the exhaust component with the support member passing through the elastic member and the protrusion protruding from the opening of the hole. Support material.

5. The support member according to any one of claims 1 to 3, the hole penetrates the elastic member, The length of the section of the support member where the high friction region is provided is longer than the length of the hole. Support material.

6. The support member according to any one of claims 1 to 3, The high-friction region is provided around the outer circumferential surface of the support member. Support material.

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