CN201120922Y - Shock-absorbing seat tube for bicycle - Google Patents

Abstract

A shock absorbing seat tube for a bicycle comprises an outer tube, a supporting unit and a shock absorbing unit. The outer sleeve includes a first end and a second end. The supporting unit comprises an inner sleeve which is arranged at the first end part of the outer sleeve in a penetrating way. The shock absorbing unit comprises an elastic part arranged at the second end part of the outer sleeve, the elastic part is provided with a first spring coil section and a second spring coil section, the first spring coil section is abutted against the supporting unit, and the pitch of the first spring coil section is not equal to that of the second spring coil section. By means of the arrangement of the elastic piece, the spring ring section can deform according to the weights of different users, and then the users can feel the shock-absorbing effect.

Description

bicycle shock absorber

technical field

The utility model relates to a shock-absorbing seat tube, in particular to a bicycle shock-absorbing seat tube suitable for fixing a seat cushion of a bicycle.

Background technique

Referring to Fig. 1, it is an existing bicycle shock-absorbing seat tube 1, which includes an outer sleeve 11, an inner sleeve 12 passing through the outer sleeve 11, a support rod 13 passing through the inner sleeve 12, a A locking unit 14 connected to the support rod 13 and fixed by a bicycle seat cushion (not shown in the figure), and an elastic member 15 abutting against the inner sleeve 12 and including a plurality of coils 151 .

When the user rides the bicycle, if the bicycle is subjected to an external force (such as the vibration force generated by traveling on a bumpy road), the deformation of the elastic member 15 absorbs part of the external force, and then passes through the inner sleeve. 12. The support rod 13 , the locking unit 14 and the seat cushion transmit the remaining external force to the user, so that the user is less affected by the external force to achieve shock absorption.

When the elastic member 15 is subjected to the external force, it is also subjected to the user's body weight. Therefore, under the same external force, if the user's weight is heavy, it is easy to make all the adjacent elastic members 15 The spring coil 151 is against each other, so that the elastic member 15 cannot absorb the external force and the user cannot feel the shock absorbing effect. Although the above-mentioned problems can be avoided by increasing the elastic coefficient of the elastic member 15, the light weight For the user, since the elastic member with a large elastic coefficient is not easily deformed, the user cannot feel the shock absorbing effect.

Utility model content

The purpose of the utility model is to provide a bicycle shock-absorbing seat tube which can have different shock-absorbing effects according to the user's weight. The bicycle shock-absorbing seat tube of the utility model comprises: an outer casing, a support unit, and a shock-absorbing unit, the outer casing includes a first end and a second end oppositely arranged along a central axis, the support The unit includes an inner sleeve pierced through the first end of the outer sleeve, a support rod pierced through the inner sleeve, a fixing member connecting the support rod and the inner sleeve, and a support rod disposed on the outer sleeve An adjustment piece at the first end of the first end, a constriction piece arranged between the support rod and the inner sleeve, and a constriction piece arranged between the adjustment piece and the constriction piece and against the constriction piece The shock-absorbing unit includes a limiting group, wherein the shock-absorbing unit further includes an elastic member disposed at the second end of the outer sleeve and abutting against the limiting group.

The elastic member has a first coil segment abutting against the supporting unit, and a second coil segment, and the pitch of the first coil segment is not equal to the pitch of the second coil segment. The beneficial effect of the utility model is that: with the arrangement of the elastic member, the coil segment can be deformed according to the weight of different users, so that the user can feel the effect of shock absorption.

Description of drawings

Fig. 1 is a schematic sectional view illustrating the composition of an existing bicycle shock-absorbing seat tube.

Fig. 2 is an exploded perspective view illustrating the components of a first preferred embodiment of the present invention.

Fig. 3 is a schematic side view illustrating the pitch relationship between a first coil section and a second coil section of an elastic member of the first preferred embodiment.

Fig. 4 is a schematic cross-sectional view illustrating the situation before the elastic member is not subjected to the user's weight and an external force.

Fig. 5 is a schematic cross-sectional view illustrating the situation when the elastic member is acted on by the user's weight and the external force.

Fig. 6 is a schematic sectional view illustrating a second preferred embodiment of the present invention.

7 is a schematic side view illustrating the pitch relationship of a first coil segment, a second coil segment and a third coil segment of an elastic member of the second preferred embodiment.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail:

For convenience of description, in the following embodiments, the same components are denoted by the same reference numerals.

Referring to FIGS. 2-4 , it is a first preferred embodiment of the bicycle shock-absorbing seat tube of the present invention, which includes an outer sleeve 2 , a support unit 3 , a shock-absorbing unit 4 , and a locking unit 5 .

The outer sleeve 2 includes a first end portion 21 and a second end portion 22 oppositely disposed along a central axis L1.

The support unit 3 includes an inner sleeve 31 passing through the first end 21 of the outer sleeve 2, a support rod 32 passing through the inner sleeve 31, and a connecting rod 32 and the inner sleeve 31. A fixing part 33, an adjusting part 34 arranged on the first end 21 of the outer sleeve 2, a constricting part 35 arranged between the support rod 32 and the inner sleeve 31, an adjusting part arranged on the adjusting part 34 and the constricting member 35 and a spacing group 36 against the constricting member 35, and a gasket 37 sandwiched between the inner sleeve 31 and the fixing member 33, the spacing group 36 There is a collar 361 abutting against the constricting member 35, a linkage 362 spaced apart from the collar 361 along the axis L1, and a link between the collar 361 and the linkage 362 The spacer 363 between.

The shock-absorbing unit 4 includes an elastic member 41 arranged on the second end 22 of the outer sleeve 2, and a limiting group 42 abutting against the elastic member 41. The elastic member 41 has a The first coil section 411 against which the gasket 37 of 3 abuts, and a second coil section 412, the first coil section 411 has a plurality of coils 413, and the pitch of the first coil section 411 P1 is not equal to the pitch P2 of the second coil segment 412 , that is, the pitch P1 of the first coil segment 411 can be greater than or smaller than the pitch P2 of the second coil segment 412 . In the present embodiment, the pitch P1 of the first coil segment 411 is greater than the pitch P2 of the second coil segment 412 , so the elastic member 41 presents a state of being sparse at the top and dense at the bottom. The limiting group 42 has a limiting member 421 disposed on the second end 22 of the outer tube 2 , and a protrusion 422 sandwiched between the second coil segment 412 and the limiting member 421 .

The locking unit 5 is connected with the support rod 32 and is fixed by a bicycle seat cushion (not shown in the figure).

With reference to Fig. 5, in the process of riding a bicycle by a lighter user, if the bicycle is subjected to an external force (such as the vibration force generated by running through a bumpy road surface), at this time, by means of the elastic member 41, After the deformation of the coil segments 411, 412 absorbs the user's body weight and part of the external force, the rest of the seat cushion is then passed through the inner sleeve 31 of the support unit 3, the support rod 32, the locking unit 5 and the seat cushion. The external force is transmitted to the user, so that the user is less affected by the external force so that the user can feel the effect of shock absorption. And when the heavy user rides the bicycle and is subjected to the external force, since the pitch P2 of the second coil segment 412 is smaller than the pitch P1 of the first coil segment 411, that is to say, the The coefficient of elasticity of the second coil section 412 is greater than that of the first coil section 411, therefore, even if the first coil section 411 makes the adjacent coils 413 abut against each other due to the weight of the user At this time, the external force can still be absorbed by the deformation of the second coil segment 412 so that the user can still feel the shock absorbing effect.

Referring to Fig. 6, 7, it is a second preferred embodiment of the bicycle shock-absorbing seat tube of the present utility model, and its difference with above-mentioned first preferred embodiment is that the composition of this elastic member 41 is different, and this elastic member 41 There is also a third coil section 414 connecting the first and second coil sections 411, 412, the pitch P1 of the first coil section 411 is equal to the pitch P2 of the second coil section 412, the The pitch P3 of the third coil segment 414 is not equal to the pitches P1 and P2 of the first and second coil segments 411, 412, that is to say, the pitch P3 of the third coil segment 414 can be greater or less than The pitches P1 and P2 of the first and second coil segments 411 and 412 . In this embodiment, the pitch P3 of the third coil section 414 is smaller than the pitches P1 and P2 of the first and second coil sections 411, 412, so the elastic member 41 presents an upper sparse middle dense bottom sparse situation. In this way, when the bicycle is subjected to the external force, the same beneficial effect as that of the above-mentioned first preferred embodiment can be achieved through the deformation of the coil segments 411 , 412 , 414 .

To sum up the above, the utility model relies on the setting of the elastic member 41, the coil segments 411, 412 can be deformed according to the weight of different users, so that the user can feel the effect of shock absorption, so it can indeed achieve the utility model. the goal of.

Claims (8)

1. A bicycle shock-absorbing seat tube, comprising: an outer sleeve, a support unit, and a shock-absorbing unit, the outer sleeve includes a first end and a second end oppositely arranged along a central axis, the The support unit includes an inner sleeve pierced through the first end of the outer sleeve, a support rod pierced through the inner sleeve, a fixing member connecting the support rod and the inner sleeve, and a support rod disposed on the outer sleeve. an adjustment piece at the first end of the tube, a constriction piece disposed between the support rod and the inner sleeve, and a constriction piece disposed between the adjustment piece and the constriction piece and abutting against the constriction piece Arrived interval group, the shock absorber unit includes a limit group, which is characterized in that: The shock-absorbing unit also includes an elastic member disposed at the second end of the outer sleeve and abutting against the limiting group; The elastic member has a first coil segment abutting against the supporting unit, and a second coil segment, and the pitch of the first coil segment is not equal to the pitch of the second coil segment. 2. The bicycle shock absorber seat tube according to claim 1, wherein the pitch of the second coil segment is smaller than the pitch of the first coil segment. 3. The bicycle shock-absorbing seat tube according to claim 1, wherein the elastic member also has a third coil section connecting the first and second coil sections, and the section of the first coil section The pitch of the second coil segment is equal to the pitch of the second coil segment, and the pitch of the third coil segment is not equal to the pitch of the first coil segment. 4. The bicycle shock-absorbing seat tube according to claim 3, wherein the pitch of the third coil section is smaller than the pitch of the first and second coil sections. 5. The bicycle shock-absorbing seat tube according to claim 2, characterized in that: the support unit further comprises a spacer sandwiched between the inner sleeve and the fixing member, the first coil segment and the Gasket against each other. 6. The bicycle shock-absorbing seat tube as claimed in claim 5, wherein the stopper of the shock-absorbing unit has a stopper arranged at the second end of the outer tube, and a stopper set at the second end of the outer sleeve The protrusion between the second coil segment and the limiting member. 7. The bicycle shock absorber seat tube as claimed in claim 6, further comprising a locking unit connected to the support rod and fixed by a bicycle seat cushion. 8. The bicycle shock-absorbing seat tube as claimed in claim 7, characterized in that: the spacer group has a collar abutting against the constricting member, and a linking piece spaced apart from the collar along the axis , and a spacer sandwiched between the collar and the link.

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