CN104890792B - Direct locking type vertical pipe - Google Patents

Abstract

The invention discloses a straight-locking riser, which includes a base and an upper cover. The base has a clamping part, two extension parts and two first through holes respectively provided in the extension parts. The clamping part has a clamping part from its top. A concave lower groove, a concave arc surface located in the lower groove, two second through holes provided in the concave arc surface and four screw holes provided on the top surface, two first screws are respectively provided in the first The upper cover is perforated and screwed to a shoulder cover fixed to a vertical pipe. Two second screws are respectively perforated through the second through holes and screwed to the shoulder cover. The upper cover has an upper groove recessed from its bottom surface and one located in the upper groove. There is an upper concave arc surface inside and four third perforations on the bottom surface. Four third screws are respectively penetrated through the third perforations and screwed to the screw holes respectively, so that a grip rod is clamped between the upper and lower concave arc surfaces. time; therefore, the straight-locking riser allows the bicycle to have good control and stability.

Description

A direct lock riser

technical field

The present invention relates to bicycle stems, and more particularly to a direct mount stem.

Background technique

Please refer to Fig. 1 and Fig. 2, the existing straight-lock riser 10 mainly comprises a base 11 and an upper cover 12, and the base 11 has a clamping portion 112, and integrally extends from the clamping portion 112 And the two fixing parts 114 that come out. The upper cover 12 is fixed to the clamping portion 112 by four screws 13 for clamping and fixing a grip bar 14 of the bicycle between the upper cover 12 and the clamping portion 112 . The two fixing parts 114 are fixed to a front fork crown 16 (fork crown) of the bicycle by four screws 15 . The front fork crown 16 is affixed to a vertical tube 17 and two shock absorbers 18 of the bicycle, and then indirectly affixed to the front wheel (not shown) of the bicycle. Therefore, the user can control the bicycle through the grip bar 14 The front wheel of the bicycle. The straight-lock riser 10 is mostly used in bicycles with special competitive uses, such as downhill racing bikes, to achieve good structural strength and handling.

In order to improve the handling of the bicycle and allow the user to control the front wheel through the handle 14 more quickly and with less effort, there is another straight-lock riser improved from the aforementioned straight-lock riser 10 on the market. The improvement method is mainly to shorten the width of the clamping portion 112, that is, the distance between the two side surfaces 112a of the clamping portion 112 is reduced, and the width of the upper cover 12 is correspondingly shortened, and the clamping portion 112 is moved toward the two sides. The space between the fixing parts 114 moves, so that the front sections 114a of the two fixing parts 114 are respectively located beside the two side surfaces 112a of the clamping part 112, such a design can shorten the clamping part 112 and the fixing part 114 of the base 11 The distance between the grip bar 14 and the standpipe 17 is also shortened, so as to achieve the effect of shortening the control radius and improving the maneuverability of the bicycle. However, the clamping portion 112 and the upper cover 12 of this type of straight-lock riser are relatively short in width, resulting in poor stability of the handle bar 14 due to the small range clamped by the straight-lock riser.

Contents of the invention

In view of the above-mentioned defects, the main purpose of the present invention is to provide a straight-lock seat tube, which can provide a bicycle with good handling and stability.

To achieve the above object, the present invention provides a straight-locking standpipe for fixing to a handle bar and a shoulder cap fixed to a standpipe, and the standpipe can define a central axis. The direct locking riser includes a base, two first screws, two second screws, an upper cover, and four third screws. The base has a clamping portion, two extensions extending from the clamping portion, and two first through holes respectively arranged on the two extending portions. The clamping portion has a top surface and a A depressed lower groove, a lower concave arc surface located in the lower groove, two second through holes arranged on the lower concave arc surface, and four screw holes arranged on the top surface. The two first screws respectively pass through the two first through holes, and are used for screwing and fixing to the shoulder cover. The two second screws respectively pass through the two second through holes, and are used for screwing and fixing on the shoulder cover. The upper cover has a bottom surface, an upper groove recessed from the bottom surface, an upper concave arc surface located in the upper groove, and four third perforations arranged on the bottom surface. The bottom surface of the upper cover and the upper concave arc The surfaces are respectively facing the top surface and the concave arc surface of the base. The four third screws respectively pass through the four third through holes and are respectively screwed to the four screw holes, so as to clamp and fix the grip bar between the lower concave arc surface and the upper concave arc surface.

Since the first and second through holes of the base are set according to the screw holes of the shoulder cover (that is, the screw holes for the first and second screws to be screwed together), the first and second through holes are connected to each other and to the vertical There is a specific distance between the tubes. Compared with the four screws 15 and the two fixing parts 114 in the prior art straight-lock riser 10 (as shown in Figure 1 and Figure 2), the four screws 15 pass through the holes, the direct lock of the present invention The first and second screws and the first and second perforations of the vertical standpipe are closer to the handle bar, that is, the standpipe can be closer to the handle bar, so the control radius can be shortened and the handling of the bicycle can be improved.

In addition, compared with the straight-lock riser 10 described in the prior art, the clamping portion and the upper cover of the base of the straight-lock riser of the present invention do not need to be designed to be shorter in order to achieve the aforementioned effects, and even No matter how long the clamping part and the upper cover are designed, the aforementioned effects will not be affected. Therefore, the clamping part and the upper cover can have an appropriate length, so that the grip bar is clamped in a sufficient range Have good stability.

The detailed structure, features, assembly or use of the straight-lock riser provided by the present invention will be described in the detailed description of the implementation below. However, those skilled in the field of the present invention should understand that these detailed descriptions and specific examples for implementing the present invention are only for illustrating the present invention, and are not intended to limit the patent application scope of the present invention.

Description of drawings

Fig. 1 is the three-dimensional combination diagram of straight lock type standpipe and a grip bar, a front fork shoulder cover, a standpipe and two shock absorbers in the prior art;

Fig. 2 is the three-dimensional exploded view of the straight lock type standpipe in the described prior art;

Fig. 3 is a three-dimensional combined view of a straight-lock riser provided by a preferred embodiment of the present invention;

Fig. 4 is a three-dimensional exploded view of the direct locking riser provided by the preferred embodiment of the present invention;

Fig. 5 is a top view of a base of the straight-lock riser provided by the preferred embodiment of the present invention;

Fig. 6 is a cross-sectional view of Fig. 3 along section line 6-6;

Fig. 7 is a three-dimensional exploded view of the straight-lock riser provided by the preferred embodiment of the present invention, a handle bar, a shoulder cover, a standpipe and two shock absorbers;

Fig. 8 is a three-dimensional combined view of the straight-locking standpipe provided by the preferred embodiment of the present invention, the handle bar, the shoulder cover, the standpipe and the two shock absorbers;

Fig. 9 is a top view of Fig. 8, except that the four third screws, an upper cover and the grip bar of the straight lock riser are removed for illustration;

Figure 10 is similar to Figure 9, but shows another way of use; and

FIG. 11 is a cross-sectional view of FIG. 8 along section line 11-11.

Explanation of reference signs:

10 Straight-Lock Riser 11 Base

112 Clamping part 112a side

114 fixed part 114a front section

12 Top cover 13 Screws

14 Lever 15 Screw

16 Fork crown cap 17 Steerer tube

18 shock absorbers

20 Direct Lock Riser 22 Main Block

24 Connect Blocks

30 Base 31 Clamping part

311 top surface 312 bottom surface

313 Front 314 Rear

315 Left 316 Right

32 Extension 33 First perforation

34 Lower groove 35 Lower concave arc

36 Second perforation 362 Upper section

364 Lower section 366 Bottom

368 front hole 369 rear hole

37 (front) screw holes 38 (rear) screw holes

40 Upper cover 41 Bottom

42 Upper surface 43 Upper groove

44 Upper concave arc 45 Third perforation

51 First screw 52 Second screw

522 Head 524 Body

53 Third screw

61 Shoulder cap 62 Grip

63 Riser 64 Shock Absorber

L1 Centerline of curvature L2 Center axis

D1 Vertical distance D2, D3, D4 Center distance

D5 length

detailed description

Please refer to Fig. 3 and Fig. 4, the straight-locking riser 20 provided by a preferred embodiment of the present invention includes a base 30, an upper cover 40, two first screws 51, two second screws 52, and four fourth screws. Three screws 53 .

4 to 6, the base 30 has a clamping portion 31, the clamping portion 31 has a planar top surface 311, and a roughly opposite direction to the top surface 311 and has ups and downs. The lower surface 312 of the clamping portion 31 can define a front side 313, a rear side 314, a left side 315, and a right side 316 according to the rider's orientation when the straight-lock seat tube 20 is installed on the bicycle. . The base 30 further has two extending portions 32 integrally extending from the rear side 314 of the clamping portion 31 , and two first through holes 33 respectively disposed on the two extending portions 32 .

The clamping portion 31 further has a lower groove 34 that is recessed from the top surface 311 and is open on the left side 315 and the right side 316, and a concave arc surface 35 located in the lower groove 34, through which The two second through holes 36 on the concave arc surface 35 and the lower surface 312, and the four screw holes 37, 38 passing through the top surface 311 and the lower surface 312, the four screw holes 37, 38 include a screw hole near the front side 313 two front screw holes 37, and two rear screw holes 38 close to the rear side 314, the two second through holes 36 are located between the two front screw holes 37 and the two rear screw holes 38, the two rear screw holes 38 It is located between the two second through holes 36 and the two first through holes 33 . The concave arc surface 35 can define a curvature centerline L1.

In this embodiment, the two first through holes 33 are respectively a slotted hole, and the two second through holes 36 respectively have an upper section 362 and a lower section 364 . The upper section 362 is an oblong hole extending downward from the concave arc surface 35 and has a bottom surface 366 . The lower section 364 extends downward from the bottom surface 366 to the lower surface 312 , and the lower section 364 includes a front hole 368 and a rear hole 369 connected thereto.

The upper cover 40 has a planar bottom surface 41 , a concave-convex upper surface 42 facing the opposite direction to the bottom surface 41 , an upper groove 43 recessed from the bottom surface 41 and corresponding in shape to the lower groove 34 , An upper concave arc 44 is located in the upper groove 43 , and four third through holes 45 pass through the bottom surface 41 and the upper surface 42 .

Please refer to Fig. 7 and Fig. 8, when the straight lock type standpipe 20 is installed on the bicycle, the two first screws 51 are used to respectively pass through the two first through holes 33 and screwed and fixed on a shoulder cover 61, and The two second screws 52 are passed through the two second through holes 36 and screwed to the shoulder cover 61 , so as to fix the base 30 to the shoulder cover 61 . As shown in Figure 6, each of the second screws 52 has a head 522 and a body 524, and the body 524 of the two second screws 52 is respectively arranged on the lower sections 364 of the two second through holes 36, the two second The heads 522 of the two screws 52 are respectively disposed on the upper sections 362 of the two second through holes 36 and do not protrude from the concave arc surface 35 .

In this embodiment, the body portions 524 of the two second screws 52 can be selectively arranged in the front holes 368 or the rear holes 369 of the two second through holes 36 respectively, that is, when performing the aforementioned assembly steps, use Alternatively, the body portions 524 of the two second screws 52 can be respectively set in the front holes 368 of the two second through holes 36 to form the embodiment shown in Figure 9, or the user can also use the two second screws The body parts 524 of 52 are respectively arranged in the rear holes 369 of the two second through holes 36 to form the embodiment shown in FIG. 10 .

Then, a handle bar 62 is arranged on the lower groove 34 of the base 30, and the upper cover 40 is arranged on the handle bar 62, so that the handle bar 62 is also located at the upper groove 43 of the upper cover 40, And the bottom surface 41 and the upper concave arc surface 44 of the upper cover 40 are respectively facing the top surface 311 and the lower concave arc surface 35 of the base 30 (as shown in FIG. 11 ), and then the four third screws 53 are respectively inserted in the The four third through holes 45 are respectively screwed to the four screw holes 37 , 38 , so that the grip bar 62 is clamped and fixed between the downward concave arc surface 35 and the upper concave arc surface 44 . In this way, the centerline of curvature of the upper concave arc surface 44 of the upper cover 40 and the center axis of the handle 62 approximately coincide with the centerline of curvature L1 of the lower concave arc surface 35 of the base 30 .

The shoulder cover 61 is fixedly connected with a vertical tube 63 and two shock absorbers 64, and then indirectly fixed with the front wheel (not shown in the figure) of the bicycle, and the direct locking type vertical tube 20 is fixed on the handle bar 62 and the The shoulder cover 61, therefore, the user can control the front wheel of the bicycle through the grip bar 62. The standpipe 63 can define a central axis L2, the smaller the vertical distance D1 between the central axis L2 and the curvature centerline L1, the smaller the distance between the standpipe 63 and the grip bar 62, the user can pass the grip The smaller the control radius of the rod 62 to control the front wheel of the bicycle, the better the controllability.

Since the first and second through holes 33, 36 of the base 30 are set according to the screw holes of the shoulder cover 61 (that is, the screw holes for the first and second screws 51, 52 to be screwed, not shown in the figure), the described There are specific distances between the first and second through holes 33 , 36 and between the standpipe 63 and each other. According to commonly used shoulder cap specifications, the center distance D2 between the two first through holes 33 and between the two second through holes 36 is 50 millimeters (mm), and the first and second through holes located on the same side of the grip bar 62 The center distance D3 between 33 and 36 (there are two implementations shown in Fig. 9 and Fig. 10) is 30mm.

Compared with the distance between the four screws 15 and the handle 14 of the straight-lock riser 10 (as shown in Figure 1 and Figure 2 ) in the prior art, the first and second bolts of the straight-lock riser 20 of the present invention The distance between the screws 51 , 52 and the handle bar 62 (that is, the distance between the first and second through holes 33 , 36 and the handle bar 62 ) is small, so that the standpipe 63 can be closer to the handle bar 62 . According to the commonly used shoulder cover specifications, the straight-lock riser 10 in the prior art makes the center distance between the handle bar 14 and the standpipe 17 at least 50 mm. In this embodiment, when the body portions 524 of the two second screws 52 are disposed in the front holes 368 of the second through holes 36 (as shown in FIG. 9 ), the vertical distance D1 between the center line of curvature L1 and the center axis L2 (that is, the center distance between the grip bar 62 and the standpipe 63) is 25mm; The vertical distance D1 between the curvature center line L1 and the center axis L2 (that is, the center distance between the grip bar 62 and the standpipe 63 ) is 30 mm. In other words, the design of the present invention can greatly shorten the steering radius for the user to control the front wheel of the bicycle through the grip bar 62 , thereby effectively improving the handling of the bicycle.

It is worth mentioning that the lower section 364 of each of the second through holes 36 does not necessarily have to be the 8-shaped hole formed by connecting the front and rear holes 368, 369 as provided in this embodiment, but can be the same as each The oblong hole of the first through hole 33 is such that the vertical distance D1 between the center line of curvature L1 and the center axis L2 is greater than or equal to 25 mm and less than or equal to 30 mm. Alternatively, the lower sections 364 of each of the second through holes 36 and each of the first through holes 33 can also be designed as 8-shaped holes, however, as provided in this embodiment, each of the lower sections 364 and each of the first through holes One of the through holes 33 is an oblong hole and the other is a figure-eight hole, allowing the user to change the installation method of the base 30, only need to disassemble the screw located in the figure-eight hole to change its setting position, and set The screws in the oblong holes can be moved as long as they are unscrewed, which is more convenient in use. Alternatively, the upper and lower sections 362 and 364 of each of the first through hole 33 and the second through hole 36 can be a single circular hole, so that the vertical distance D1 between the center line of curvature L1 and the center axis L2 cannot be changed according to usage requirements. The positions of the first and second through holes 33, 36 can also be displaced toward the front side 313 of the clamping portion 31, so that the vertical distance D1 between the center line of curvature L1 and the center axis L2 (that is, the handle 62 and the center distance of the standpipe 63) is smaller, such as 20mm and 25mm respectively during the two usage modes.

Since the distance between the front and rear holes 368 and 369 of each of the second through holes 36 in this embodiment is relatively small, they are designed to be connected. However, the distance between the front and rear holes 368, 369 of each of the second through holes 36 can also be designed to be relatively large, so that the front and rear holes 368, 369 can be separated, that is, the lower section 364 of each of the second through holes 36 It can include unconnected front and rear holes 368, 369. In this case, the unconnected front and rear holes 368, 369 can still be located on the bottom surface of the same oblong hole (that is, the upper section). They are respectively located at the bottom of a circular hole with a larger diameter than the front and rear holes 368 and 369.

In addition to the above-mentioned effects of making the bicycle better in handling, the present invention, compared with the direct-locking standpipe 10 described in the prior art (as shown in Figures 1 and 2), the direct-locking standpipe 10 of the present invention The clamping portion 31 and the upper cover 40 of the base 30 of the pipe 20 need not be designed shorter in order to achieve the aforementioned effects, even, no matter how long the clamping portion 31 and the upper cover 40 are designed, it will not affect Due to the aforementioned effects, the clamping portion 31 and the upper cover 40 can have an appropriate length, so that the grip bar 62 can be clamped in a sufficient range and have good stability. According to the above-mentioned commonly used shoulder cover specifications, the center distance D4 between the two front screw holes 37 and the two rear screw holes 38 is preferably designed to be greater than or equal to 50mm, and the concave arc surface of the base 30 35 and the length D5 of the upper concave arc surface 44 of the upper cover 40 is preferably designed to be greater than or equal to 60 mm.

It is worth mentioning that the foregoing embodiments take a one-piece straight-lock riser as an example to illustrate the technical features of the present invention, and these technical features can also be applied to a two-piece straight-lock riser. As shown in FIG. 3 , the one-piece straight-locking riser 20 can distinguish two main blocks 22 which are fixed on the shoulder cover 61 and have a better supporting effect on the grip bar 62, and a connection between the two main blocks 22. The connecting block 24 of the block 22, as long as the connecting block 24 of the straight-locking riser 20 is removed, it becomes a two-piece straight-locking riser. In this case, the two main blocks 22 are separated from each other, And respectively include an extension 32, a first through hole 33, a second through hole 36, a front screw hole 37, a rear screw hole 38, two third through holes 45, a first screw 51 1. One of the second screw 52 and two of the third screw 53. In addition, the base 30 and the upper cover 40 respectively include two components separated from each other and respectively located in the two main blocks 22, the clamping part 31 and the Its top surface 311, lower groove 34 and lower concave arc surface 35, and features such as the bottom surface 41, upper groove 43 and upper concave arc surface 44 of the upper cover 40 all have a part in one of the main blocks 22 and The other part is in another main block 22 . In other words, even if the connection block 24 of the straight-lock riser 20 is removed to form a two-piece straight-lock riser, it still includes the main features of the present invention, and thus belongs to the protection scope of the present invention.

Finally, it must be stated again that the constituent elements disclosed in the foregoing embodiments of the present invention are only for illustration and are not intended to limit the scope of protection of this case. The substitution or change of other equivalent elements should also be covered by the patent application scope of this case. cover.

Claims (9)

1. A straight-locking standpipe, used to be fixed to a handle bar, and a shoulder cap fixed to a standpipe, the standpipe can define a central axis; the straight-locking standpipe comprises: A base has a clamping part, two extensions extending from the clamping part, and two first through holes respectively arranged in the two extending parts, the clamping part has a top surface, a A lower groove with a concave surface, a lower concave arc surface located in the lower groove, two second through holes arranged on the lower concave arc surface, and four screw holes arranged on the top surface; Two first screws are respectively installed in the two first through holes, and are used for screwing and fixing to the shoulder cover; Two second screws are respectively installed in the two second through holes, and are used for screwing and fixing to the shoulder cover; An upper cover has a bottom surface, an upper groove recessed from the bottom surface, an upper concave arc surface located in the upper groove, and four third perforations arranged on the bottom surface, the bottom surface of the upper cover and the upper concave The curved surfaces are respectively facing the top surface and the concave curved surface of the base; and Four third screws respectively pass through the four third through holes and are respectively screwed to the four screw holes, so as to clamp and fix the grip bar between the lower concave arc surface and the upper concave arc surface. 2. The straight-lock riser as claimed in claim 1, wherein the concave arc surface of the base can define a curvature centerline, and the vertical distance between the curvature centerline and the central axis is greater than or equal to 20 mm and less than or equal to 30 mm. 3. The direct locking riser as claimed in claim 1, wherein the four screw holes of the base include two front screw holes and two rear screw holes, and the two second through holes are located between the two front screw holes and the two rear screw holes. Between the rear screw holes, the two rear screw holes are located between the two second through holes and the two first through holes, and the center distance between the two front screw holes and the center distance between the two rear screw holes is greater than or equal to 50 mm. 4. The direct locking riser as claimed in claim 1, wherein the length of the concave arc surface of the base and the length of the upper concave arc surface of the upper cover are greater than or equal to 60 mm. 5. The direct locking riser as claimed in claim 1, wherein the two second through holes of the base have an upper section and a lower section respectively, and the upper section extends downward from the concave arc surface and has A bottom surface, the lower section extends downward from the bottom surface, the two second screws respectively have a head and a body, the bodies of the two second screws are respectively arranged on the lower sections of the two second through holes, the The heads of the two second screws are respectively arranged on the upper sections of the two second through holes and do not protrude from the concave arc surface. 6. The direct locking riser as claimed in claim 5, wherein the two first through holes of the base are respectively an oblong hole, and the lower sections of the two second through holes respectively include a front hole and a rear hole, The bodies of the two second screws can be selectively arranged in the front holes or the rear holes of the two second through holes respectively. 7. The direct locking riser as claimed in claim 6, wherein the front hole and the rear hole of each lower section are connected. 8. The direct locking riser as claimed in claim 1, wherein the two first through holes of the base are respectively an oblong hole, the two second through holes respectively include a front hole and a rear hole, and the two second The screws can be selectively arranged in the front hole or the back hole of the two second through holes respectively. 9. The direct lock riser as claimed in any one of claims 6 to 8, wherein the concave arc surface of the base can define a curvature centerline, when the two second screws are respectively arranged on the two second When the front hole is pierced, the vertical distance between the center line of curvature and the central axis is greater than or equal to 25 mm; The vertical distance is 30mm.