Gear display structure, speed changing and gear shifting mechanism and bicycle

Abstract

The utility model discloses a gear display structure, a speed changing and gear shifting mechanism and a bicycle. The gear display structure comprises a display shell, a gear display ring, a gear pull rope and a gear switching driving wheel. The gear display ring is rotationally arranged on the display shell, and a plurality of gear marks distributed in the circumferential direction are arranged on the gear display ring. The two ends of the gear pull rope are connected to the gear display ring and the gear switching driving wheel respectively, the gear pull rope comprises a shift-up pull rope and a shift-down pull rope, the directions, acting on the gear display ring, of the shift-up pull rope and the shift-down pull rope are opposite, and the directions, acting on the gear switching driving wheel, of the shift-up pull rope and the shift-down pull rope are opposite; the gear switching driving wheel and a gear shifting rotating piece of the speed change gear shifting mechanism are connected or integrally arranged. The device has the advantages of long service life, easiness in operation and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bicycle speed change operating device, in particular to a gear display structure, a speed change gear mechanism and a bicycle. BACKGROUND

[0002] The current bicycle finger-operated gear shifting mechanism is mainly driven by the rider's fingers to drive the driving lever of the finger-operated gear shifting mechanism to drive the rope reel to rotate. The reel is positioned at different positions by a fixed positioning device, so as to realize the tightening and release of the rope and achieve the purpose of directly driving the bicycle derailleur by the rope to achieve the gear shifting of the bicycle. With the increasing demand of the rider for the number of speed gears, the operating range of the speed change operating device in the limited space is greatly improved.

[0003] The speed display device is usually provided in the bicycle speed change mechanism. For example, the utility model patent with the authorized announcement number CN 203727605U discloses a speed change gear mechanism with a speed display device, which comprises a fixed ring and a speed display belt. The fixed ring has an outer groove and an inner groove with upper and lower end faces at both ends. The speed display belt comprises a speed display part, a joint, a connecting part and a fixed part. The spiral spring installed on the connecting part is placed in the inner groove of the fixed ring with one end at the lower end face of the inner groove and the other end cooperating with the joint part and the upper end face of the inner groove of the fixed ring after the speed display belt is installed in the outer groove. The connecting part passes through the opening of the fixed ring and the fixed part is assembled in the steel wire reel. The speed display part is bent and placed in the outer groove of the fixed ring.

[0004] The above speed change gear mechanism can display the gear position, but still has the following disadvantages:

[0005] 1. The speed display belt is made of flexible plastic belt and is often pulled and curled, so the service life is not long enough and display failure is prone to occur.

[0006] 2. The pressure spring is used as the driving force for resetting. If the speed display belt is pulled out, for example, when the gear is increased, the resistance of the pressure spring needs to be overcome, resulting in more laborious gear shifting operation and poor experience. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims at overcoming the above problems and providing a gear display structure and a speed change gear mechanism, which have the advantages of long service life and easy operation.

[0008] Another purpose of the utility model is to provide a bicycle.

[0009] The purpose of the utility model is achieved by the following technical solutions: The utility model discloses a gear display structure and a speed change gear mechanism.

[0010] A gear display structure comprises a display shell, a gear display ring, a gear pull rope and a gear switching driving wheel.

[0011] The gear display ring is rotationally arranged in the display shell, and a plurality of gear marks are arranged on the gear display ring in a circumferential direction.

[0012] Two ends of the gear pull rope are connected to the gear display ring and the gear switching driving wheel respectively, the gear pull rope comprises a gear up pull rope and a gear down pull rope, the gear up pull rope and the gear down pull rope act on the gear display ring in opposite directions, and the gear up pull rope and the gear down pull rope act on the gear switching driving wheel in opposite directions.

[0013] The gear switching driving wheel is connected to or integrally arranged with a gear shifting rotating part of a gear shifting mechanism.

[0014] In an embodiment, a display window is arranged on the display shell, and the gear marks of the gear display ring are arranged below the display window.

[0015] Further, a transparent protective cover is arranged above the display window to protect the internal structure and allow the gear marks to be visible.

[0016] In an embodiment, the display shell is arranged on one side of a mounting jacket of the gear shifting mechanism, the gear display ring is arranged on the outside of a handlebar of the bicycle, and the axis of the gear display ring is perpendicular to the axis of the gear switching driving wheel.

[0017] Further, a rotating mounting part is arranged on one side of the mounting jacket for rotationally mounting the gear display ring, and the gear display ring is rotationally arranged on the rotating mounting part.

[0018] In an embodiment, the gear switching driving wheel is integrally arranged with a steel wire rope.

[0019] In an embodiment, two receiving grooves for winding the gear up pull rope and the gear down pull rope are arranged on the gear display ring and the gear switching driving wheel.

[0020] In an embodiment, a guide structure is further arranged, and the guide structure comprises a first guide rod and a second guide rod.

[0021] The axis of the first guide rod is parallel to the axis of the gear display ring.

[0022] The axis of the second guide rod is perpendicular to the axis of the gear display ring, or the second guide rod is provided with a guide part, and the extension direction of the guide part is perpendicular to the axis of the gear display ring.

[0023] One of the gear position pull ropes is connected to the gear display ring after being wound around the first guide rod, and the other gear position pull rope is connected to the gear display ring after being wound around the first guide rod and the second guide rod in sequence.

[0024] The gear display structure is used in a gear shifting mechanism.

[0025] The gear display structure is used in a bicycle.

[0026] Compared with the prior art, the utility model has the following beneficial effects:

[0027] 1、The gear display structure of the utility model switches the gear position through the rotatable gear display ring, does not cause the excessive deformation to the body of the gear display ring, and can greatly prolong the service life of the display function.

[0028] 2、The gear position is switched through the gear display ring which is pulled by the gear up pull rope and the gear down pull rope alternately, the operation is smooth, and the labor is saved, and the control experience of the gear shifting mechanism is improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figures 1-2 The utility model discloses a gear display structure of two kinds of three-dimensional structure explosion schematic diagram of gear shifting mechanism.

[0030] Figure 3 The utility model discloses a gear display structure of two kinds of three-dimensional structure explosion schematic diagram of gear shifting mechanism. DETAILED DESCRIPTION

[0031] In order to make the skilled in the art well understand the technical scheme of the utility model, the utility model is further described below in combination with examples and drawings, but the embodiment of the utility model is not limited to this.

[0032] In combination with Figures 1-3 The bicycle of the embodiment includes a gear shifting mechanism and a vehicle body, and the gear shifting mechanism includes a gear shifting operation structure and a gear display structure.

[0033] In combination with Figures 1-2 The display housing 1 is provided with a display window 1-1, and the upper portion of the display window 1-1 is provided with a transparent protective cover 5 to protect the internal structure and show the gear position.

[0034] In combination with Figures 1-3The gear display ring 2 is rotatably arranged in the display housing 1, and a plurality of gear marks are arranged on the gear display ring 2 in the circumferential direction.

[0035] In combination Figures 1-3 One end of the gear pull rope is fixed and wound on the outer circumferential surface of the gear display ring 2, and the other end of the gear pull rope is fixed and wound on the outer circumferential surface of the gear shift driving wheel 4; the gear pull rope includes a gear up pull rope 6 and a gear down pull rope 7, the winding directions of the gear up pull rope 6 and the gear down pull rope 7 on the gear display ring 2 are opposite, and the winding directions of the gear up pull rope 6 and the gear down pull rope 7 on the gear shift driving wheel 4 are opposite.

[0036] In combination Figures 1-3 The gear shift driving wheel 4 is coaxially fixedly connected or integrally arranged with a shift rotating part of the gear shift mechanism, and the gear shift driving wheel 4 is integrally arranged with the steel wire rope.

[0037] In combination Figures 1-3 The display housing 1 is arranged on one side of a mounting clamp 8 of the gear shift mechanism, the gear display ring 2 is located on the outside of the handlebar of the bicycle, and the axis of the gear display ring 2 is perpendicular to the axis of the gear shift driving wheel 4.

[0038] Further, one side of the mounting clamp 8 is provided with a rotating mounting part 8-1 for rotatingly mounting the gear display ring 2, and the gear display ring 2 is rotatably arranged on the rotating mounting part 8-1.

[0039] In combination Figures 1-3 The gear display ring 2 and the gear shift driving wheel 4 are both provided with two accommodation grooves 9 for winding the gear up pull rope 6 and the gear down pull rope 7.

[0040] In combination Figures 1-3 The gear display structure further includes a guide structure including a first guide rod 10 and a second guide rod 11; the axis of the first guide rod 10 is parallel to the axis of the gear display ring 2; the axis of the second guide rod 11 is perpendicular to the axis of the gear display ring 2, or the second guide rod 11 is provided with a guide part, and the extension direction of the guide part is perpendicular to the axis of the gear display ring 2; one of the gear pull ropes is connected to the gear display ring 2 after winding around the first guide rod 10, and the other gear pull rope is connected to the gear display ring 2 after winding around the first guide rod 10 and the second guide rod 11 in sequence. Through the above structure, the two ends of the gear up pull rope 6 and the gear down pull rope 7 can be wound on the gear shift driving wheel 4 and the gear display ring 2 with two axes perpendicular to each other.

[0041] In combination Figures 1-3 Figures 1-3 The working principle of the above gear display structure is as follows:

[0042] When upshifting, the shift rotating member (e.g. a steel wire loop) of the gear shifting mechanism is rotated by the shift lever in the upshifting direction, the gear shifting driving wheel 4 is rotated accordingly, thus pulling the upshifting pull rope 6 in the winding direction (at this time, the downshifting pull rope 7 is unwound on the gear shifting driving wheel 4), then the gear display ring 2 is rotated in the upshifting direction by the upshifting pull rope 6 (at this time, the upshifting pull rope 6 is unwound on the gear display ring 2, while the downshifting pull rope 7 is gradually wound on the gear display ring 2), so that the next gear is displayed at the display window 1-1 of the display housing 1, and the upshifting operation is completed.

[0043] Similarly, when downshifting, the shift rotating member (e.g. a steel wire loop) of the gear shifting mechanism is rotated by the shift lever in the downshifting direction, the gear shifting driving wheel 4 is rotated accordingly, thus pulling the downshifting pull rope 7 in the winding direction (at this time, the upshifting pull rope 6 is unwound on the gear shifting driving wheel 4), then the gear display ring 2 is rotated in the downshifting direction by the downshifting pull rope 7 (at this time, the downshifting pull rope 7 is unwound on the gear display ring 2, while the upshifting pull rope 6 is gradually wound on the gear display ring 2), so that the next gear is displayed at the display window 1-1 of the display housing 1, and the downshifting operation is completed.

[0044] The above is the preferred embodiment of the present application, but the embodiment of the present application is not limited by the above content, any change, modification, replacement, combination, simplification made without departing from the spirit and principle of the present application shall be equivalent replacement, and all are included in the protection scope of the present application.

Claims

1. A gear position display structure characterized by comprising: The gear display structure comprises a display shell, a gear display ring, gear pulling ropes and a gear switching driving wheel. The gear display ring is rotatably arranged on the display shell, and a plurality of gear marks are arranged on the gear display ring in a circumferential direction. Two ends of the gear pulling ropes are respectively connected to the gear display ring and the gear switching driving wheel. The gear switching driving wheel is connected to or integrally arranged with a gear shifting member of a gear shifting mechanism.

2. The gear position display structure according to claim 1, characterized by A display window is arranged on the display shell, and the gear marks of the gear display ring are located below the display window.

3. The gear position display structure according to claim 2, characterized by A transparent protective cover is arranged above the display window.

4. The shift position display structure according to claim 1, characterized by The display shell is arranged on one side of a mounting clamp of the gear shifting mechanism, and the gear display ring is located outside a handlebar of the bicycle, and an axis of the gear display ring is perpendicular to an axis of the gear switching driving wheel.

5. The gear position display structure according to claim 4, characterized by A rotating mounting portion for rotatingly mounting the gear display ring is arranged on one side of the mounting clamp, and the gear display ring is rotatably arranged on the rotating mounting portion.

6. The shift position display structure according to claim 1, characterized by The gear switching driving wheel is integrally arranged with a steel wire rope.

7. The shift position display structure according to claim 1, characterized by Two receiving grooves for winding the gear pulling ropes are arranged on the gear display ring and the gear switching driving wheel.

8. The gear display structure according to claim 1, characterized by The gear display structure further comprises a guide structure comprising a first guide rod and a second guide rod. An axis of the first guide rod is parallel to an axis of the gear display ring. An axis of the second guide rod is perpendicular to the axis of the gear display ring, or the second guide rod is provided with a guide portion, and an extension direction of the guide portion is perpendicular to the axis of the gear display ring. One of the gear pulling ropes is connected to the gear display ring after being wound around the first guide rod, and the other gear pulling rope is connected to the gear display ring after being wound around the first guide rod and the second guide rod.

9. A variable speed gear shift mechanism characterised in that, The gear display structure comprises the gear display structure according to any one of claims 1-8.

10. A bicycle characterized in that, The gear shifting mechanism comprises the gear display structure according to claim 9.

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