TWI615306B - Casing gap filling structure of bicycle seat tube - Google Patents

Description

Casing gap filling structure of bicycle seat tube

The present invention relates to a gap filling structure, particularly for use between sleeves of a bicycle seat tube to provide a dual function of the rotational limit of the linear displacement of the sleeve and the elimination of the sleeve gap.

The bicycle seat cushion and its seat tube are mainly used for the rider's weight, ground impact, pedaling posture and efficiency. Therefore, in addition to the basic seating function, the height of the seat tube on the market is also increased. The lifting device adjusts the height of the seat cushion or provides a cushioning device in the seat tube to reduce the impact of the ground impact and enhance the comfort.

The seat tube of the bicycle seat cushion, whether it has a height adjustment or cushioning function, needs to have an inner tube inside the outer tube, and the inner tube can be linearly displaced inside the outer tube. Further, by adding a lifting device or a buffering device between each of the outer tube and the inner tube, the lifting adjustment or the buffering and shock absorbing function can be respectively achieved.

Further, when the bicycle seat tube needs a height lifting function, the inner tube can be switched between linear movement and positioning by using the lifting device disposed between the inner and outer tubes, and the inner tube is driven when the lifting device is driven. The tube and the seat cushion provided thereon can be linearly moved according to the height requirement. When the lifting device is stopped, the inner tube and the seat cushion provided thereon are positioned; if the bicycle seat tube needs to be cushioned and shocked In the function, the buffer device is disposed between each of the inner and outer tubes, so that the inner tube and the seat cushion disposed thereon can be vertically moved back and forth in the outer tube to buffer the impact force from the ground.

However, when the inner tube and the outer tube are relatively linearly actuated, it is easy to cause the rotation of the inner tube to be unable to be positioned, so that the efficiency of the rider's hi-hat is lowered, and even the safety of riding is dangerous, so the industry is in the outer tube. Between the inner tube and the inner tube, a rotation limiting device is added, so that when the inner tube is linearly displaced, there is no rotation and a limiting effect.

Such a seat tube structure having a rotation limit, such as the "seat suspension seat tube" disclosed in the domestic patent No. 103203086; the "new domestic patent No. 104201523" disclosed "Adjustable seat tube assembly for driving"; also, "the bicycle seat restraining rotation device" disclosed in the new patent No. 104213450; respectively, when the inner tube is linearly moved in the outer tube in various forms, Will rotate the function.

Since various types of rotation limiting devices are disposed between the inner diameter of the outer tube and the outer diameter of the inner tube, there are preset tolerances, which can be easily and easily assembled, and the components will be There is a slight tolerance gap; on the other hand, each of the inner and outer tubes is linearly moved for a long time and is worn out, so that the inner tube, the outer tube and the rotation limit-related components are connected to each other to easily generate a gap; The gap set by the tolerance, or the gap caused by long-term wear, will cause the inner tube to shake when moving linearly inside the outer tube; if it is a suspension seat tube, such slight shaking will cause riding. Poor body balance or reduced pedaling efficiency. If it is a lifting seat tube, such slight shaking will cause the lifting adjustment to be out of alignment and cause the related components to collide during the operation, resulting in damage to the parts or short service life.

In the industry, a device for removing the gap between the inner tube, the outer tube and the rotation limiting device is further provided, such as the bicycle interference seat tube capable of eliminating the gap disclosed in the new patent No. 095215925, which includes There is: a tube body having a continuous perforation extending in a vertical direction; a guide rod having a bottom portion formed in a through hole of the tube body, the joint portion having a shaft hole and a radial hole from the shaft The hole extends to the outer circumference, the shaft hole is provided with a thread; a cover nut is disposed on the top of the tube body, and has a screw hole for the guide rod to be inserted therein, the cover nut extends inwardly and has a convex portion a screw, which is screwed into the shaft hole of the guide rod, the top end of the station screw is formed with a tapered surface; a locking bolt is located below the station screw and has a head, a threaded portion and a An axial through hole, the threaded portion is screwed into the shaft hole of the guide rod; a sleeve is received in the through hole of the tube body and has a shaft hole through which the guide rod joint portion is inserted, a casing is located between the cover nut flange and the head of the locking bolt; The connecting rod is disposed in a radial hole of the guiding rod, and one end of the connecting rod is formed with a sloped surface abutting against the tapered surface of the mounting screw, and the other end is abutted against the inner wall of the sleeve; a protruding block is disposed at the The inner wall of the tubular body is located below the locking bolt; and an elastic member is disposed in the tubular body, and the elastic member is abutted against the head of the locking bolt and the protruding block with both ends thereof.

Another conventional seat tube structure having a gap eliminating device, such as the gap adjusting structure for a bicycle suspension seat tube disclosed in the Japanese Patent No. 092220281, includes an outer tube having a hollow portion; a tube inserted in the hollow portion; a cushion cover, The utility model is disposed on the inner wall of the top of the outer tube and between the inner tube and the outer tube for clamping the inner tube; wherein the inner tube is provided with a transverse screw hole at the contact with the cushion sleeve; and opposite to the screw The outer tube of the hole is provided with a perforation for aligning the screw hole with the perforation. The cushion sleeve has a polygonal shape, and a surface of one of the sides is provided with a rigid material blocking piece; and a perforation is provided on the opposite side of the surface. The perforations of the outer tube are aligned, thereby providing a bolt for screwing into the screw hole of the inner tube, and then adjusting the bolt from the perforations by using a tool, so that the end of the bolt abuts against the blocking piece, so that the edge of the cushion is attached Tight the inner wall of the outer tube.

In the above structure, each has a structure capable of eliminating the gap function, wherein the structure of the first case allows the user to use a manual tool to rotate the station screw, so that the station screw pushes the linkage column outward, and the sleeve is deformed by force to eliminate The gap between the pipe body, the guide rod and the sleeve; the second case is to make the cushion sleeve have a polygonal shape, and the surface of one of the sides is provided with a rigid material blocking piece, thereby providing a bolt end to the top of the block. The sheet is such that the edge of the cushion sleeve abuts against the inner wall of the outer tube to eliminate the gap between the inner tube and the rotation limiting device.

However, the conventional structure for eliminating the gap has many complicated components, complicated assembly time, and laborious manpower, which makes the manufacturing cost high; and the assembly tolerance gap and the wear gap associated with the component are more likely to occur, so that when needed Rotate the screws or bolts to eliminate the gap; on the other hand, the above-mentioned conventional design uses a screw or a bolt to penetrate the inner tube and cooperates with a component to force the inner tube or the outer tube to eliminate the gap structure design, and is not suitable for the lifting adjustment. The seat tube structure is mostly disposed inside the inner tube due to the lifting and adjusting device, and is mostly a structure in which air pressure, oil pressure or oil and gas are mixed, and the screws or bolts cannot be worn in the lifting device, so that they are not compatible. Therefore, the inventor of the present invention proposed a seat tube structure that can rotate the limit and eliminate the gap to solve the problem of the conventional seat tube.

In view of the above, the casing gap filling structure of the bicycle seat tube disclosed in the present invention comprises: a casing group having one outer tube and one inner tube interposed, and the inner tube can be outside The inner tube is linearly displaced, and the exposed end of the inner tube is connected with a pad clamping group; a rotating limit group is disposed between each of the inner tube and the outer tube, and has an inner diameter disposed on the outer tube a first limiting slot in the shape of a groove, and the first limiting slot extends axially within the outer tube by a predetermined length, and the outer diameter of the inner tube is grooved and The first limiting slot corresponds to one of the second limiting slots, and the second limiting The slot is axially extended by a predetermined length outside the inner tube, and each of the first and second limiting slots forms a limiting space, and is matched with at least one metal limiting member of the metal material, and is disposed at the limiting position. The space can be synchronously linearly displaced with the inner tube. The metal limiting member is respectively located in each of the first and second limiting slots, and a gap filling group is disposed at the limiting position. In the space, the plastic limiting material has at least one plastic limiting member, and the metal limiting member is stacked in the limiting space with the axial direction of each of the inner and outer tubes. The plastic limiting member is The two preset portions are respectively located in the first and second limiting slots, and effectively fill the limiting space to eliminate the gap between the plastic limiting member and each of the first and second limiting slots; The above-mentioned members utilize the rotation limit group and the gap filling group to achieve the dual functions of the rotation limit and the clearance between the inner tube and the outer tube at the same time, and the integral member is simple and easy to set up and fast. Low manufacturing costs, while reducing tolerances and manufacturing tolerances between components The gap, without the need for mobilization for packing spin, but also to achieve auto-fill feature, and is compatible with the lifting of the seat tube and seat tube shock absorbers person.

The main object of the present invention is to provide a casing gap filling structure for a bicycle seat tube, which has a structural design of a rotation limit and a gap filling, so that the rotation limit and the clearance can be simultaneously achieved between the inner tube and the outer tube. The dual effect.

A second object of the present invention is to provide a casing gap filling structure for a bicycle seat tube, which is simple in structure, easy to assemble, and quick in manufacturing cost.

A further object of the present invention is to provide a casing gap filling structure for a bicycle seat tube, and a rotation limit group and a gap filling group disposed between the inner and outer tubes can be applied to a height-adjustable seat cushion lifting seat. The tube structure can also be applied to the structure of the bicycle suspension seat tube, so it has compatibility.

A further object of the present invention is to provide a casing gap filling structure for a bicycle seat tube. Since the member is simple and few, the gap between the components and the manufacturing tolerance can be reduced, and the tightening operation is not required. Auto fill function can be achieved.

[this invention]

(10)‧‧‧ casing group

(11)‧‧‧External management

(12) ‧ ‧ inner management

(13)‧‧‧Cushion clamping group

(20) ‧‧‧Rotary Limit Group

(21)‧‧‧First limit slot

(22)‧‧‧Second limit slot

(23) ‧‧‧Limited space

(24)‧‧‧Metal Limits

(30) ‧‧‧ gap filling group

(31)‧‧‧ Plastic Limits

(40)‧‧‧ Lifting and positioning device

(41) ‧‧‧Lifting and positioning group

(42) ‧‧‧Drive Group

(50) ‧‧‧buffering device

The first figure is a perspective view of a preferred embodiment of the present invention.

The second figure is an exploded perspective view of a preferred embodiment of the present invention.

The third figure is a schematic diagram of a set of a preferred embodiment of the present invention.

The fourth figure is a schematic sectional view of a preferred embodiment of the present invention.

The fifth figure is a schematic cross-sectional view of a preferred embodiment of the present invention.

Figure 6 is a perspective view of a second embodiment of the present invention.

Figure 7 is a perspective exploded view of a second embodiment of the present invention.

Figure 8 is a schematic cross-sectional view showing a second embodiment of the present invention.

Figure 9 is a perspective exploded view of a third embodiment of the present invention.

Figure 11 is a schematic cross-sectional view showing a third embodiment of the present invention.

Figure 11 is an exploded perspective view of a fourth embodiment of the present invention.

Figure 12 is a schematic view showing the assembly of the fourth embodiment of the present invention.

Figure 13 is a schematic cross-sectional view showing a fourth embodiment of the present invention.

First, please refer to the first to fifth figures. The casing gap filling structure of the bicycle seat tube provided by the present invention is applied to the bicycle seat tube which can be adjusted by lifting and lowering, and is connected with a bicycle seat cushion. The utility model comprises: a casing group (10), and a rotation limit group (20), a gap filling group (30) and a lifting positioning device (40) disposed in the casing group (10).

The casing set (10) has an outer tube (11) and an inner tube (12) sleeved with each other, and the inner tube (12) can be linearly displaced in the outer tube (11); The exposed end of the inner tube (12) is connected to a pad holding group (13).

The rotation limit group (20) is disposed between each of the inner tube (12) and the outer tube (11), and has a first limit of a groove shape formed on an inner diameter edge of the outer tube (11) a groove (21), and the first limiting groove (21) has a long groove shape, and extends axially within the outer tube (11) by a predetermined length; the outer diameter of the inner tube (12) is concave a second limiting groove (22) corresponding to the first limiting groove (21) and having the second limiting groove (22) in a short groove shape, in the inner tube (12) The first and second limiting slots (21) (22) respectively correspond to each other and form a limiting space (23); at least one metal limiting member (24) is copper Metal, iron, aluminum, steel or aluminum alloy applications, which are accommodated in the space (13), and can be linearly displaced with the inner tube (12); the metal limiting member (24) is located at each of the first and second limiting slots (21) (22) The first and second limiting slots (21) (22) together form the limiting space (23) having a hollow circular cross section.

The gap filling group (30) is disposed in the limiting space (23), and has at least one plastic limiting member (31), which is a plastic material such as polyoxymethylene POM, nylon or Teflon, and The metal limiting members (24) are stacked in the axial direction of each of the inner and outer tubes (12) (11); the plastic limiting member (31) is two Positioning portions are respectively located in the first and second limiting slots (21) (22), and effectively filling the limiting space (23) to eliminate the plastic limiting member (31) and each of the first and the first The gap between the two limiting slots (21) and (22); each of the metal limiting member (24) and the plastic limiting member (31) has a circular cross section matching the limiting space (23).

The lifting and lowering device (40) is disposed between the inner tube (12) and the outer tube (11), and has a lifting positioning group (41) for linearly displaces and positions the inner tube (12). State switching; a driving group (42) is disposed between the lifting positioning group (41) and the seat cushion clamping group (13), and the preset portion is exposed outside the inner tube (12) and is clamped with the seat cushion The holding group (13) is connected to the front; the preset portion of the driving group (42) is connected to the lifting positioning group (41), and drives the lifting positioning group (41) to generate linear displacement and state switching of the positioning.

By using the above components, each of the rotation limit group (20) and the gap filling group (30) is used to achieve the dual functions of the rotation limit and the clearance between the inner tube (12) and the outer tube (11). The overall component is simple, the assembly is easy and fast, so the manufacturing cost is low, and the gap between the components and the tolerance of the manufacturing tolerance can be reduced, and the automatic filling function can be achieved without the need of the tight rotation and the automatic filling function. Compatible with lifting seat tube and suspension seat tube.

For a further understanding of the structural features of the present invention, the application of the technical means, and the desired effects, the mode of use of the present invention will be described as follows: The present invention is integrated prior to assembly, prior to the inner diameter of the outer tube (11). Forming the first limiting slot (21), and integrally forming the second limiting slot (22) on the outer diameter edge of the inner tube (12); respectively, each lifting positioning group (41) and the driving group (42) and the seat cushion clamping group (13) are respectively assembled.

When the invention is assembled, firstly, one end of the inner tube (12) is assembled with the driving group (42); the lifting positioning group (41) is pierced and positioned inside one end of the outer tube (11); The metal limiting member (24) and the plastic limiting member (31) are axially stacked in the second limiting slot (22); each of the metal limiting members (24) and the plastic limiting member (31) Corresponding to the orientation of the first limit slot (21), and then setting the state Each of the inner tube (12), the driving group (42), the metal limiting member (24) and the plastic limiting member (31) are disposed in the outer tube (11), and the lifting positioning group (41) The metal limiting member (24) and the plastic limiting member (31) are respectively disposed between the first and second limiting slots (21) (22). The seat cushion clamping group (13) is connected to the driving group (42); and other various plug members or positioning seats are disposed at both ends of the outer tube (11), that is, the assembly is completed.

According to the present invention, between the inner tube (12) and the outer tube (11), each of the rotation limit group (20) and the gap filling group (30) are provided, which can achieve the following effects:

1. The rotation limit group (20) and the gap filling group (30) are coupled to each other in the structure, and the rotation limit group (20) has the inner tube (12) and the outer tube (11). The linear actuation does not produce the rotation limit function, and the gap filling group (30) effectively eliminates the gap between the inner tube (12) and the outer tube (11) to reduce the occurrence of sloshing during linear actuation. The stability of the linear displacement of the inner tube (12) is improved, so the seat tube structure of the invention has the dual functions of rotating limit and eliminating the gap.

2. The rotation limit group (20) and the gap filling group (30) of the present invention have simple overall components, are easy and quick to set up, and therefore have low manufacturing cost, and are complicated and complicated to solve conventional structural components, and have long assembly time. And it is labor intensive, which makes the manufacturing cost high.

3. The rotation limit group (20) and the gap filling group (30) are disposed between each of the inner tube (12) and the outer tube (11), and do not interfere with the inner tube (12). The lifting and positioning group (41) is actuated, and does not affect the operation of the cushioning device (50) disposed between the inner tube (12) and the end of the outer tube (11), so that it can be applied to the height adjustment seat. The pad lifting seat tube structure can also be applied to the bicycle suspension seat tube structure, so it has compatibility, and the conventional elimination gap structure can only be applied to the problem of the suspension seat tube.

Fourth, each of the rotation limit group (20) and the gap filling group (30) of the present invention can reduce the tolerance between the components and the manufacturing tolerances due to the simple and small components, and solve the conventional structure due to various components. The mutual cooperation and the accumulation of manufacturing tolerances result in poor precision resulting in gap problems.

5. The gap filling group (30) can effectively fill the limiting space (23) and eliminate the gap between the inner tube (12) and the outer tube (11) by the characteristics of the plastic material, and does not need to perform any during use. Adjustment, so it has the function of automatic filling, to solve the problem that the conventional structure needs to be tightly tightened to tighten the screws or bolts.

Referring to FIG. 6 to FIG. 8 , a second embodiment of the present invention is applied to a suspension seat tube, and further has a buffer device (50) disposed on the inner tube (12). Passing through the piercing end of the outer tube (11), and connecting the predetermined portion of the buffer device (50) to the inner tube (12), Another preset portion of the buffer device (50) is in contact with the inside of the outer tube (11); each of the first and second limiting slots (21) (22) together form a limit of a hollow quadrilateral shape. The space (23); each of the metal limiting member (24) and the plastic limiting member (31) is in a quadrangular cross section matching the limiting space (23).

This embodiment mainly provides an implementation method of the present invention for use in a suspension seat tube, and another form of the rotation limit group (20) and a gap filling group (30); other techniques and structural applications of the embodiment The set, actuate and use states and the expected effects are all identical to the first embodiment described above.

Please refer to the ninth to tenth drawings, which are the third embodiment of the present invention, which is applied to the embodiment of the suspension seat tube, wherein the first and second limiting slots (21) (22) are common. Forming a limiting space (23) having a hollow triangular shape; each of the metal limiting member (24) and the plastic limiting member (31) is in a triangular shape matching the limiting space (23) Section. This embodiment mainly provides an implementation method of the present invention for use in a suspension seat tube, and another form of the rotation limit group (20) and a gap filling group (30); other technical and structural applications and assemblies The operation, the state of use, and the intended effect are all identical to the first embodiment described above.

Referring to FIG. 11 to FIG. 13 , FIG. 11 is a fourth embodiment of the present invention, which is applied to a suspension seat tube, wherein each of the first and second limiting slots (21) (22) a joint space (23) having a hollow circular cross section; the metal limiting member (24) has a cylindrical shape, and the cross section thereof is matched with the limiting space (23); the plastic limiting member (31) It has a round bead shape. This embodiment mainly provides an implementation method of the present invention for use in a suspension seat tube, and another form of the rotation limit group (20) and a gap filling group (30); other technical and structural applications and assemblies The operation, the state of use, and the intended effect are all identical to the first embodiment described above.

In summary, the "sleeve gap filling structure of a bicycle seat tube" disclosed in the present invention provides a seat tube structure having the dual functions of rotation limit and clearance elimination, which utilizes each of the rotation limit groups and the gap filling assembly. Between each of the inner tube and the outer tube, the structure of the concave and convex card is designed, so that the metal limiting member and the plastic limiting member are interposed between the first and second limiting slots, and the integral member is simple. The assembly is easy and fast, so the manufacturing cost is low, and the gap between the components and the tolerances caused by the manufacturing tolerances can be reduced, and the automatic filling function can be achieved without the need of the tightening and rotating operation, and is compatible with the lifting seat tube. And the suspension seat tube, and the result is a practical seat tube structure, which makes the whole industry practical and cost-effective, and its structure has not been seen in books or Open use, in line with the requirements of the invention patent application, please ask the Bureau to understand the patent, as soon as possible to grant patents, to pray.

It is to be understood that the above is a specific embodiment of the present invention and the technical principles applied thereto, and the functional effects produced by the concept of the present invention are still beyond the spirit of the specification and drawings. In the meantime, it should be combined with Chen Ming within the scope of the present invention.

(11)‧‧‧External management

(12) ‧ ‧ inner management

(13)‧‧‧Cushion clamping group

(21)‧‧‧First limit slot

(22)‧‧‧Second limit slot

(24)‧‧‧Metal Limits

(30) ‧‧‧ gap filling group

(31)‧‧‧ Plastic Limits

(41) ‧‧‧Lifting and positioning group

(42) ‧‧‧Drive Group

Claims (11)

The casing gap filling structure of the bicycle seat tube is mainly connected with a bicycle seat cushion, and comprises: a casing group having one outer tube and one inner tube, and the inner tube is a linear displacement is performed in the outer tube, and the exposed end of the inner tube is connected with a pad clamping group; a rotating limit group is disposed between each of the inner tube and the outer tube, and has a outside a first limiting groove of the inner diameter of the tube and having a groove shape, and the first limiting groove extends axially for a predetermined length in the outer tube, and the outer diameter of the inner tube is grooved And a second limiting slot corresponding to the first limiting slot, and the second limiting slot extends axially outside the inner tube by a predetermined length, each of the first and second limiting slots Forming a limit space together with at least one metal limiting member of the metal material, is accommodated in the limiting space, and can be linearly displaced synchronously with the inner tube, and the metal limiting member is divided into two preset parts. Separately located in each of the first and second limiting slots; a gap filling group is disposed in the limiting space, and has at least one plastic of plastic material The positional member and the metal limiting member are stacked in the limiting space in the axial direction of the inner and outer tubes, and the plastic limiting member is respectively located in the first and second portions respectively. The limiting space is filled in the limiting slot to effectively eliminate the gap between the plastic limiting member and each of the first and second limiting slots. According to the casing gap filling structure of the bicycle seat tube according to claim 1, wherein the first and second limiting slots jointly form the limiting space with a hollow cross section; each of the metal limiting members And the plastic limiting member has a circular cross section matching the limiting space. According to the casing gap filling structure of the bicycle seat tube according to claim 1, wherein the first and second limiting slots jointly form the limiting space with a hollow quadrilateral shape; each of the metal limiting members and The plastic limiting member has a quadrangular cross section matching the limiting space. According to the casing gap filling structure of the bicycle seat tube according to claim 1, wherein the first and second limiting slots jointly form the limiting space with a hollow triangular shape; each of the metal limits The piece and the plastic limiting member are in a triangular cross section matching the limiting space. According to the casing gap filling structure of the bicycle seat tube according to claim 1, wherein the first and second limiting slots jointly form the limiting space with a hollow cross section; the metal limiting member is Round beads. According to the casing gap filling structure of the bicycle seat tube according to the first application of the patent scope, The first and second limiting slots jointly form the limiting space with a hollow cross section; the plastic limiting member has a circular bead shape. According to the casing gap filling structure of the bicycle seat tube according to the first aspect of the invention, wherein the inner tube and the outer tube are provided with a lifting positioning device, which has a lifting positioning group, and linear displacement is generated for driving the inner tube. And a state switching of the positioning; a driving group is disposed between the lifting positioning group and the seat pad clamping group, and the preset portion is exposed outside the inner tube and is connected with the seat pad clamping group, the driving group The preset portion is connected to the lifting positioning group, and drives the lifting positioning group to generate linear displacement and state switching of the positioning. According to the casing gap filling structure of the bicycle seat tube according to the first aspect of the patent application, a buffer group is disposed between the inner tube and the outer tube of the inner tube, so as to provide a buffering force when the inner tube is linearly displaced. The casing gap filling structure of the bicycle seat tube according to the first aspect of the invention, wherein the first limiting groove has a long groove shape extending axially from the inner diameter of the outer tube; the second limiting groove is axially Extending the short groove shape of the outer diameter edge of the inner tube. According to the casing gap filling structure of the bicycle seat tube according to the first aspect of the patent application, the plastic limiting member can be used for materials such as polyoxymethylene POM, nylon or Teflon. The casing gap filling structure of the bicycle seat tube according to the first aspect of the patent application scope, wherein the metal limiting member can be applied to materials such as copper, iron, aluminum, steel or aluminum alloy.