Shift knob structure

Abstract

To obtain a shift knob structure that can improve the aesthetic appeal of a transparent shift knob. [Solution] A shift knob structure 10 comprising a transparent shift knob 14 and a cover slide 20 having a retaining portion 24 that is externally mounted on the lower part of the shift knob 14, wherein the cover slide 20 has a flange portion 22 that protrudes from the upper part of the retaining portion 24, and the retaining portion 24 is configured to hold the lower part of the shift knob 14 by being reduced in diameter by a tightening member 30.

Description

Technical Field

[0001] The present invention relates to a shift knob structure.

Background Art

[0002] It has been conventionally known that a shift knob of a vehicle such as an automobile is transparent (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The lower surface of the above-mentioned transparent shift knob is attached to the upper surface of a pedestal provided at the upper end of the shift lever by an adhesive. Therefore, the adhesive can be visually recognized from the outside, and the design property of the shift knob is impaired.

[0005] Therefore, an object of the present invention is to obtain a shift knob structure capable of improving the design property of a transparent shift knob.

Means for Solving the Problems

[0006] In order to achieve the above object, a shift knob structure according to a first aspect of the present invention includes a transparent shift knob and a cover slide having a holding portion externally provided at a lower portion of the shift knob. The cover slide has a flange portion protruding from an upper portion of the holding portion, and the holding portion is configured to hold a lower portion of the shift knob by reducing a diameter by a fastening member.

[0007] According to the first embodiment of the invention, the cover slide has a retaining portion that is externally mounted on the lower part of the transparent shift knob, and the retaining portion is configured to hold the lower part of the shift knob by being reduced in diameter by a tightening member. Here, the cover slide has a flange portion that protrudes from the upper part of the retaining portion. Therefore, the flange portion and the retaining portion make the tightening member difficult to see from the outside, improving the design of the transparent shift knob.

[0008] Furthermore, a second embodiment of the shift knob structure according to the present invention is the shift knob structure according to the first embodiment, wherein the holding portion is formed in a "C" shape in cross-section, and the fastening member is a C-ring.

[0009] According to the second embodiment of the invention, the holding portion is formed in a "C" shape in cross-section, and the fastening member is a C-ring. Therefore, the holding portion and the fastening member can be realized with a simple configuration.

[0010] Furthermore, a third aspect of the shift knob structure according to the present invention is the shift knob structure according to the first aspect, wherein the holding portion is formed in a "C" shape in cross-section, and the fastening member is a ring member whose diameter is reduced by tightening the fastener.

[0011] According to the third embodiment of the invention, the holding portion is formed in a "C" shape in cross-section, and the fastening member is a ring member whose diameter is reduced by tightening the fastener. Therefore, the holding portion and the fastening member can be realized with a simple configuration.

[0012] Furthermore, a fourth aspect of the shift knob structure according to the present invention is a shift knob structure according to the first aspect, wherein the holding portion is formed in a "C" shape in cross-section and has a male screw portion formed on its outer circumferential surface, and the fastening member is a ring member having a female screw portion on its inner circumferential surface.

[0013] According to the fourth embodiment of the invention, the holding portion is formed in a "C" shape in cross-section and has a male screw portion on its outer circumferential surface, and the fastening member is a ring member having a female screw portion on its inner circumferential surface. Therefore, the holding portion and the fastening member can be realized with a simple structure.

[0014] Furthermore, a fifth aspect of the shift knob structure according to the present invention is a shift knob structure according to any one of the first to fourth aspects, wherein a positioning portion is formed on the inner circumferential surface of the holding portion to support the lower surface of the shift knob, and the positioning portion is configured to break when a load exceeding a predetermined value directed downward is applied to the shift knob.

[0015] According to the fifth aspect of the invention, a positioning portion is formed on the inner circumferential surface of the holding portion to support the lower surface of the shift knob, and the positioning portion is configured to break when a load exceeding a predetermined value is applied to the shift knob in a downward direction. Therefore, even if a load is applied to the shift knob during a vehicle collision, the positioning portion will break and the shift knob will descend, thereby suppressing or preventing damage to the shift knob.

[0016] Furthermore, the sixth aspect of the shift knob structure according to the present invention is a shift knob structure according to any one of the first to fourth aspects, wherein a protruding portion is formed at the lower part of the shift knob, extending radially outward, and a contact portion is formed where the upper surface of the protruding portion abuts against the inner circumferential surface of the holding portion.

[0017] According to the sixth embodiment of the invention, a protruding portion is formed at the lower part of the shift knob, extending radially outward, and a contact portion is formed on the inner circumferential surface of the retaining portion, with which the upper surface of the protruding portion abuts. Therefore, the vertical position of the shift knob is precisely positioned relative to the cover slide. Furthermore, even if a load is applied to the shift knob during a vehicle collision, the shift knob will descend, thereby suppressing or preventing damage to the shift knob.

[0018] Furthermore, a seventh aspect of the shift knob structure according to the present invention comprises a transparent shift knob and a cover slide having a retaining portion that is externally mounted on the lower part of the shift knob, wherein the shift knob has a protruding portion that the lower end surface of the retaining portion abuts against and a positioning portion formed on the protruding portion that protrudes upward, and the cover slide has a flange portion that protrudes from the upper part of the retaining portion and a fitting portion that fits into the positioning portion from above.

[0019] According to the seventh aspect of the invention, the cover slide has a retaining portion that is externally mounted on the lower part of the transparent shift knob, and the shift knob has a protruding portion that the lower end surface of the retaining portion abuts against, and a positioning portion formed on the protruding portion that protrudes upward. Here, the cover slide has a flange portion that protrudes from the upper part of the retaining portion and a fitting portion that fits into the positioning portion from above. Therefore, the flange portion and the fitting portion make the positioning portion that positions the shift knob difficult to see from the outside, improving the design of the transparent shift knob.

[0020] Furthermore, the eighth aspect of the shift knob structure according to the present invention is the seventh aspect of the shift knob structure, wherein a peripheral wall is formed on the lower surface of the cover slide on the outside of the retaining portion, and the shift knob is attached to the shift lever by press-fitting the upper end of the shift lever into the inside of the peripheral wall.

[0021] According to the eighth aspect of the invention, a peripheral wall is formed on the outside of the retaining portion on the lower surface of the cover slide. The upper end of the shift lever is then press-fitted into the inside of this peripheral wall, thereby attaching the shift knob to the shift lever. Therefore, even if a load is applied to the shift knob during a vehicle collision, the peripheral wall of the cover slide breaks and detaches from the upper end of the shift lever, thus suppressing or preventing damage to the shift knob.

[0022] Further, the shift knob structure according to the ninth aspect of the present invention is the shift knob structure according to the seventh aspect, in which a peripheral wall portion is formed outside the holding portion on the lower surface of the cover slide, and the shift knob is attached to the shift lever by locking a claw portion formed on the peripheral wall portion to the upper end portion of the shift lever.

[0023] According to the invention of the ninth aspect, a peripheral wall portion is formed outside the holding portion on the lower surface of the cover slide. Then, by locking the claw portion formed on this peripheral wall portion to the upper end portion of the shift lever, the shift knob is attached to the shift lever. Therefore, even when a load is applied to the shift knob during a vehicle collision, the claw portion formed on the peripheral wall portion of the cover slide disengages from the upper end portion of the shift lever, so that damage to the shift knob is suppressed or prevented.

Effect of the Invention

[0024] As described above, according to the present invention, the design property of the transparent shift knob can be improved.

Brief Description of the Drawings

[0025] [Figure 1] It is a schematic side view showing a shift knob structure according to the first embodiment. [Figure 2] It is a schematic cross-sectional view taken along the line X-X of FIG. 1 showing the shape of the holding portion of the shift knob structure according to the first embodiment. [Figure 3] It is a schematic side view showing the shift knob structure according to the first embodiment when a load is input. [Figure 4] It is a schematic side view showing a shift knob structure according to the second embodiment. [Figure 5] It is a schematic side view showing the shift knob structure according to the second embodiment when a load is input. [Figure 6] It is a schematic cross-sectional view showing a ring member of a shift knob structure according to the third embodiment. [Figure 7] It is a schematic side view showing a shift knob structure according to the fourth embodiment. [Figure 8]This is a schematic perspective view showing the shift knob structure according to the fifth embodiment, viewed from above. [Figure 9] This is a schematic perspective view showing the shift knob structure according to the fifth embodiment, viewed from below. [Figure 10] This is a schematic exploded perspective view showing the shift knob structure according to the fifth embodiment. [Figure 11] This is a schematic perspective view showing the fitting portion of the shift knob structure according to the fifth embodiment. [Figure 12] This is a schematic perspective view showing the state in which the fitting portion is fitted to the positioning portion of the shift knob structure according to the fifth embodiment. [Figure 13] This is a schematic cross-sectional view showing the shift knob structure according to the fifth embodiment. [Modes for carrying out the invention]

[0026] The embodiments of the present invention will be described in detail below with reference to the drawings. For the sake of explanation, in each figure, the arrow UP will indicate the upward direction of the shift knob, the arrow FR will indicate the forward direction of the shift knob, the arrow LH will indicate the left direction of the shift knob, and the arrow RH will indicate the right direction of the shift knob. Furthermore, in the following description, unless otherwise specified, the directions of up, down, front, back, left, and right will refer to the up, down, front, back, left, and right directions of the shift knob.

[0027] <First Embodiment> First, the first embodiment will be described. As shown in Figure 1, the shift knob structure 10 according to the first embodiment includes a transparent shift knob 14 provided on the upper end side of a shift lever 12 for shifting gears in a vehicle (not shown), and a cover slide 20 that hides the lower part of the shift knob 14. The shift knob 14 is formed in a hollow block shape that is easy to operate with the fingers, and at least the lower part hidden by the cover slide 20 is formed in a cylindrical shape.

[0028] The cover slide 20 has a substantially cylindrical retaining portion 24 that is externally mounted on the lower part of the shift knob 14, and a flange portion 22 that protrudes at least in the front-rear direction from the upper end of the outer circumferential surface of the retaining portion 24. The flange portion 22 is formed in a substantially arc shape that is convex upward in a side cross-sectional view and has a predetermined length, and is configured to conceal the fastening member 30, which will be described later, so that it is difficult to see from the outside (above side).

[0029] The retaining portion 24 is configured to hold the lower part of the shift knob 14 by being reduced in diameter by a C-ring 32, which is an example of a fastening member 30. That is, as shown in Figure 2, the retaining portion 24 is formed in a roughly "C" shape in plan view and has a through hole 24A through which the lower part of the shift knob 14 is inserted, and a slit portion 24B of a predetermined width along the axial direction.

[0030] Therefore, the retaining portion 24 is tightened by the C-ring 32, which reduces its inner diameter and presses against and holds the lower part of the shift knob 14. In addition, an arc-shaped groove portion 24C is formed at a predetermined position on the outer surface of the retaining portion 24, with a curvature that is the same as the circular cross-section of the C-ring 32 when viewed from the side.

[0031] Furthermore, as shown in Figure 1, a plurality of positioning portions 26 that support the lower surface 14D of the shift knob 14 are formed at predetermined positions on the inner circumferential surface of the holding portion 24 below the groove portion 24C. The positioning portions 26 are composed of a plurality of protrusions 26A that extend radially inward for a predetermined length, and the upper surface of each protrusion 26A is a flat surface that makes surface contact with the lower surface of the shift knob 14. A notch or the like (not shown) is formed on the upper surface of the root portion, which is the end on the inner circumferential surface side of each protrusion 26A, and is formed in such a way that the cross-sectional area of ​​the root portion is reduced.

[0032] As a result, if a load exceeding a predetermined value is applied to the shift knob 14 in a downward direction, each projection 26A will break (break) from its base. At least two positioning parts 26 (projections 26A) are formed at equal intervals in the circumferential direction. Furthermore, because of these positioning parts 26 (projections 26A), the shift knob 14 is inserted into the holding part 24 from above.

[0033] Furthermore, the lower end of the retaining portion 24 is fitted and attached to the upper end of the shift lever 12. Specifically, a stepped portion 27 of a predetermined height is formed in an annular shape on the lower end of the inner circumferential surface of the retaining portion 24, which widens the inner diameter, and the upper end of the shift lever 12 is fitted and fixed to this stepped portion 27. This configuration creates a predetermined gap S between the lower surface 14D of the shift knob 14 and the upper surface 12U of the shift lever 12.

[0034] The operation of the shift knob structure 10 according to the first embodiment, which has the configuration described above, will now be explained.

[0035] As described above, the cover slide 20 has a retaining portion 24 that is externally mounted on the lower part of the transparent shift knob 14, and the retaining portion 24 is configured to hold the lower part of the shift knob 14 by being reduced in diameter by a C-ring 32 which acts as a fastening member 30. Here, the cover slide 20 has a flange portion 22 that protrudes from the upper end of the retaining portion 24.

[0036] Therefore, the flange portion 22 and the retaining portion 24 make the C-ring 32, which serves as the fastening member 30, less visible from the outside, thereby improving the aesthetic appeal of the transparent shift knob 14. Furthermore, since the retaining portion 24 is formed in a "C" shape in cross-section and the fastening member 30 is a C-ring 32, the retaining portion 24 and the fastening member 30 can be realized with a simple structure.

[0037] Furthermore, multiple projections 26A, which serve as positioning parts 26 to support the lower surface of the shift knob 14, are formed on the inner circumferential surface of the holding part 24 at equal intervals in the circumferential direction (at least two). The upper surface of each projection 26A is a flat surface that makes surface contact with the lower surface of the shift knob 14. This allows for accurate vertical positioning of the shift knob 14 relative to the cover slide 20.

[0038] Furthermore, each projection 26A is designed to break (break) from its base if a load exceeding a predetermined value is applied to the shift knob 14 in a downward direction. Therefore, as shown in Figure 3, even if a load is applied to the shift knob 14 during a vehicle collision, each projection 26A will break, causing the shift knob 14 to descend, thereby suppressing or preventing damage to the shift knob 14.

[0039] <Second Embodiment> Next, a second embodiment will be described. Note that parts equivalent to those in the first embodiment are denoted by the same reference numerals, and detailed descriptions (including common functions) will be omitted as appropriate.

[0040] As shown in Figure 4, this second embodiment differs from the first embodiment in that an annular projection 16 of a predetermined thickness is integrally formed at the lower end of the shift knob 14, extending radially outward in an annular shape, and an annular contact portion 25 is formed above the groove portion 24C on the inner circumferential surface of the holding portion 24, against which the annular upper surface of the projection 16 abuts, and a positioning portion 26 is not formed. The thickness of the projection 16 is greater than the thickness of the C-ring 32, and the C-ring 32 is provided to tighten the projection 16.

[0041] According to this second embodiment, the shift knob 14 is inserted into the holding portion 24 from below, and the upper surface of the protruding portion 16 comes into contact with the contact portion 25 formed on the holding portion 24. Therefore, the vertical position of the shift knob 14 can be precisely positioned relative to the cover slide 20.

[0042] Furthermore, as shown in Figure 5, even if a load is applied to the shift knob 14 during a vehicle collision, if the protruding portion 16 descends and detaches from the position where it is tightened by the C-ring 32, the entire shift knob 14 can quickly descend, thereby suppressing or preventing damage to the shift knob 14.

[0043] <Third Embodiment> Next, a third embodiment will be described. Note that parts equivalent to those in the first and second embodiments will be denoted by the same reference numerals, and detailed descriptions (including common functions) will be omitted as appropriate.

[0044] As shown in Figure 6, this third embodiment differs from the first embodiment in that the fastening member 30 is a substantially C-shaped ring member 34 that is reduced in diameter by tightening a bolt 36 as a fastener, instead of a C-ring 32. A flange portion 34A of a predetermined length is integrally formed at both ends of this ring member 34 so as to extend radially outward, and a through hole 34B for inserting a bolt 36 is formed at a predetermined position in each flange portion 34A.

[0045] Therefore, the ring member 34 is reduced in diameter when the bolt 36 is inserted through each through hole 34B of each flange portion 34A and screwed onto the nut 35. Note that a female threaded portion (not shown) may be formed in the through hole 34B, in which case the nut 35 can be omitted. Furthermore, the fastener is not limited to the bolt 36, but may also be a screw or the like (not shown).

[0046] According to this third embodiment, the holding portion 24 and the fastening member 30 can be realized with a simple structure. Furthermore, according to this third embodiment, the holding portion 24 can be tightened (reduced in diameter) more firmly than when the fastening member 30 is a C-ring 32, so the shift knob 14 can be held more firmly.

[0047] <Fourth Embodiment> Next, a fourth embodiment will be described. Note that parts equivalent to those in the first and second embodiments will be denoted by the same reference numerals, and detailed descriptions (including common functions) will be omitted as appropriate.

[0048] As shown in Figure 7, this fourth embodiment differs from the first embodiment in that a male threaded portion 24D is formed on the outer circumferential surface of the retaining portion 24, and the fastening member 30 is a ring member 38 having a female threaded portion 38A on its inner circumferential surface. The female threaded portion 38A of this ring member 38 is screwed onto the male threaded portion 24D of the retaining portion 24, thereby forming a shape that allows the retaining portion 24 to be reduced in diameter. Note that the shift lever 12 is omitted in Figure 7.

[0049] According to this fourth embodiment, the holding portion 24 and the fastening member 30 can be realized with a simple structure. Furthermore, according to this fourth embodiment, the holding portion 24 can be tightened (reduced in diameter) more firmly than when the fastening member 30 is a C-ring 32, so the shift knob 14 can be held more firmly.

[0050] <Fifth Embodiment> Finally, a fifth embodiment will be described. Note that parts equivalent to those in the first and second embodiments are denoted by the same reference numerals, and detailed descriptions will be omitted as appropriate.

[0051] As shown in Figures 8, 10, and 13, in the shift knob structure 10 according to this fifth embodiment, the transparent shift knob 14 is formed in a substantially right-angled triangular shape with an inclined front surface when viewed from the side, and in a substantially rectangular shape with the front-to-back direction as the longitudinal direction when viewed from the bottom. At the lower end of the shift knob 14, which is hidden by the flange portion 22 of the cover slide 20, a protruding portion 16 is formed, with the lower end surface 24E of the holding portion 24 contacting the upper surface.

[0052] This protruding portion 16 is formed in a substantially rectangular shape with the front-to-back direction as the longitudinal direction when viewed from below, and has a predetermined thickness that is thinner than that of the second embodiment described above. On the upper surface of both the front and rear sides of this protruding portion 16, a pair of substantially cylindrical positioning portions 18 are integrally formed at the left-to-right center of the upper surface, each projecting upward.

[0053] As shown in Figures 10 to 12, the retaining portion 24 of the cover slide 20 has a through hole 24A into which the shift knob 14 is inserted from below. This through hole 24A is formed in a substantially rectangular shape with the front-to-back direction as the longitudinal direction in a plan view. On both the front and rear sides of the lower end surface 24E of the retaining portion 24, a pair of substantially cylindrical concave fitting portions 23 are formed in the left-right center, which fit onto the positioning portion 18 of the shift knob 14 from above (see Figure 11).

[0054] Furthermore, as shown in Figures 8 to 13, an annular peripheral wall portion 28 is integrally formed on the outer side of the retaining portion 24 on the lower surface of the cover slide 20 (the outer circumference side of the lower end surface 24E), projecting downward to a predetermined height. This peripheral wall portion 28 is formed to a size and height that can accommodate the protruding portion 16 of the shift knob 14 and the main body portion 42 of the base portion 40, which will be described later. The protruding portion 16 is formed to be slightly smaller than the main body portion 42, and is configured to be accommodated inside the peripheral wall portion 28 with a small amount of clearance.

[0055] As shown in Figures 8 to 10 and Figure 13, a base portion 40 is attached to the lower end of the holding portion 24. The base portion 40 has a main body portion 42 that is roughly rectangular in shape when viewed from the bottom and is press-fitted into the inside of the peripheral wall portion 28 of the cover slide 20. That is, the main body portion 42 of the base portion 40 is fitted and attached to the inside of the peripheral wall portion 28 with its outer circumferential surface having a predetermined friction (sliding resistance) against the inner circumferential surface of the peripheral wall portion 28.

[0056] Furthermore, the base portion 40 has a connecting portion 44 that is vertically attached to the center of the lower surface of the main body portion 42. The upper end of the shift lever 12 is connected to this connecting portion 44, and the base portion 40 constitutes the upper end of the shift lever 12. In other words, the shift knob 14 is attached to the upper end of the shift lever 12 via the cover slide 20 by press-fitting the upper end of the shift lever 12 into the peripheral wall portion 28 of the cover slide 20.

[0057] Furthermore, the configuration in which the shift knob 14 is attached to the upper end of the shift lever 12 via the cover slide 20 is not limited to the press-fit method described above. For example, as shown in Figure 13, claw portions 28A may be formed on both the front and rear sides of the lower end of the peripheral wall portion 28, and these claw portions 28A may be locked to both the front and rear ends of the main body portion 42 of the base portion 40, thereby attaching the shift knob 14 to the upper end of the shift lever 12 via the cover slide 20.

[0058] The operation of the shift knob structure 10 according to the fifth embodiment, which has the configuration described above, will now be explained. Note that the explanation of operations common to the first to fourth embodiments will be omitted as appropriate.

[0059] As described above, the cover slide 20 has a retaining portion 24 that is externally mounted on the lower part of the transparent shift knob 14, and the shift knob 14 has a protruding portion 16 that the lower end surface 24E of the retaining portion 24 abuts against, and a positioning portion 18 formed on the protruding portion 16 that protrudes upward.

[0060] Here, the cover slide 20 has a flange portion 22 that protrudes from the upper end of the holding portion 24 and a fitting portion 23 that fits onto the positioning portion 18 from above. Therefore, the flange portion 22 and the fitting portion 23 make the positioning portion 18 that positions the shift knob 14 difficult to see from the outside (see the eye point indicated by "·" and the dashed line in Figure 13), thereby improving the design of the transparent shift knob 14.

[0061] Furthermore, the shift knob 14 is attached to the upper end of the shift lever 12 via the cover slide 20 by press-fitting the main body 42 of the base portion 40 into the inside of the peripheral wall portion 28 formed on the lower surface of the cover slide 20. Therefore, even if a load is applied to the shift knob 14 during a vehicle collision, the peripheral wall portion 28 of the cover slide 20 will break and detach from the upper end of the shift lever 12 (the main body 42 of the base portion 40), thereby suppressing or preventing damage to the shift knob 14.

[0062] Alternatively, the claw portion 28A formed on the peripheral wall portion 28 of the cover slide 20 may be locked to the main body portion 42 of the base portion 40, thereby attaching the shift knob 14 to the upper end of the shift lever 12 via the cover slide 20 (see Figure 13). In this case, even if a load is applied to the shift knob 14 during a vehicle collision, the claw portion 28A formed on the peripheral wall portion 28 of the cover slide 20 will elastically deform and detach from the upper end of the shift lever 12 (the main body portion 42 of the base portion 40), thereby suppressing or preventing damage to the shift knob 14.

[0063] The shift knob structure 10 according to this embodiment has been described above based on the drawings. However, the shift knob structure 10 according to this embodiment is not limited to the illustrated one, and can be modified as appropriate without departing from the spirit of the present invention. For example, the shape of the shift knob 14 is not limited to the illustrated shape.

[0064] Furthermore, the flange portion 22 is not limited to a configuration that protrudes from the upper end of the retaining portion 24, but may protrude from a slightly lower position than the upper end of the retaining portion 24. In other words, the flange portion 22 only needs to protrude from the upper part including the upper end of the retaining portion 24. Also, in the fifth embodiment, the base portion 40 may be formed integrally with the shift lever 12 and serve as the upper end of the shift lever 12, or the positioning portion 18 and the fitting portion 23 may be joined by adhesive. [Explanation of Symbols]

[0065] 10... Shift knob structure, 14... Shift knob, 16... Protruding part, 18... Positioning part, 20... Cover slide, 22... Flange part, 23... Fitting part, 24... Holding part, 25... Contact part, 26... Positioning part, 28... Peripheral wall part, 30... Fastening member, 32... C-ring, 34... Ring member, 38... Ring member

Claims

1. A transparent shift knob, A cover slide having a retaining portion that is externally attached to the lower part of the shift knob, Equipped with, The cover slide has a flange portion that protrudes from the upper part of the retaining portion, The aforementioned holding portion is configured to hold the lower part of the shift knob by being reduced in diameter by a tightening member.

2. The shift knob structure according to claim 1, wherein the retaining portion is formed in a "C" shape in cross-section, and the fastening member is a C-ring.

3. The shift knob structure according to claim 1, wherein the retaining portion is formed in a "C" shape in cross-section, and the fastening member is a ring member whose diameter is reduced by tightening the fastener.

4. The shift knob structure according to claim 1, wherein the retaining portion is formed in a "C" shape in cross-section and has a male screw portion formed on its outer circumferential surface, and the fastening member is a ring member having a female screw portion on its inner circumferential surface.

5. The shift knob structure according to claim 1, wherein a positioning portion is formed on the inner circumferential surface of the holding portion to support the lower surface of the shift knob, and the positioning portion is configured to break when a load exceeding a predetermined value directed downward is applied to the shift knob.

6. The shift knob structure according to claim 1, wherein a protruding portion is formed at the lower part of the shift knob, extending radially outward, and a contact portion is formed on the inner circumferential surface of the holding portion, the upper surface of the protruding portion contacting the inner circumferential surface of the holding portion.

7. A transparent shift knob, A cover slide having a retaining portion that is externally attached to the lower part of the shift knob, Equipped with, The aforementioned shift knob is The protruding portion that the lower end surface of the holding portion abuts against, A positioning portion formed in the aforementioned protruding portion and projecting upward, It has, The aforementioned cover slide is A flange portion protruding from the upper part of the retaining portion, A fitting portion that fits into the positioning portion from above, A shift knob structure having the following characteristics.

8. A peripheral wall is formed on the outer side of the retaining portion on the lower surface of the cover slide. The shift knob structure according to claim 7, wherein the shift knob is attached to the shift lever by press-fitting the upper end of the shift lever into the inner side of the peripheral wall.

9. A peripheral wall is formed on the outer side of the retaining portion on the lower surface of the cover slide. The shift knob structure according to claim 7, wherein the shift knob is attached to the shift lever by a claw formed on the peripheral wall engaging with the upper end of the shift lever.

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