CN2157911Y - Handle-bar stem with binding structure for bicycle - Google Patents

Abstract

The utility model relates to a handle-bar stem with binding structure for bicycle, which comprises an integral forming handle-bar stem, a bolt, a screw-block and a fixture block which are arranged in the screw hole of the locking end of the handle-bar stem, and an embedding clamp in the punched hole of the handle-bar stem. The top of the star-shaped embedding clamp is provided with a stroke through hole, and the jaw surface is provided with skidproof strips. When assembled, the horizontal handling tube is arranged in the punched hole, the embedding clamp is arranged in the priming groove of the punched hole, and the bolt passes through the through holes of the fixture block and the embedding clamp and is connected with the inner tooth hole of the screw-block. When the bolt is screwed, the embedding clamp binds the horizontal handling tube under the influence of the downward force of the screw-block and the enmbedding clamp of the fixture block. The utility model has the advantages of complete outline, beautiful appearance, homogeneous color while electrolytic treatment, and entirely hidden binding parts.

Description

Handle-bar stem with binding structure for bicycle

The utility model relates to cyclist's bar structure, and relating in particular to a kind of Handlebar of bicycle end pipe is concealed structure of tightening.

Along with the raising of standard of living, bicycle is not only a kind of vehicle at present, and is the utensil of a kind of motion and amusement, and is various in style.Along with the development of bicycle kind, the structure of the bilateral end handgrip end pipe that its front end tap level holds a writing brush or pen-write is also constantly being improved.As shown in Figure 1, the structure of existing handgrip end pipe is a dismountable group type, on handgrip end pipe 1, have one with the level 3 group trepannings 11 that wear mutually that hold a writing brush or pen-write, offer a section groove 112 at group trepanning 11 1 ends, and offer bolt slot 113 at the end face of section groove 112, by bolt 2 revolve lock advance in the bolt slot 113 and reach clamp section groove 112 and make levels in the group trepanning 11 hold a writing brush or pen-write 3 tightened firm; But the electrolytic treatments of holding pipe 1 is but hindered in offering of this section groove 112, because of implementing the plating effect fully at section groove 112 places, so that the color and luster between section groove 112 internal faces is different with end pipe 1 outside wall surface color and luster, and causes not attractive in appearance.

Main purpose of the present utility model is to design a smooth surface, must not offer the concealed end tube bank locking structure in section gap, so that the tightening structure of handgrip end pipe had not only been torn prescription open just but also make end pipe color and luster homogeneous.

The purpose of this utility model is to be realized by the concealed tightening structure of newly-designed Handlebar of bicycle end pipe: the bilateral end that its level that mainly ties up to Handlebar of bicycle holds a writing brush or pen-write, utilize in the locking termination of handgrip end pipe of one forging molding, group is established bolt, the spiral shell piece, fixture block, be provided with the hold a writing brush or pen-write hole that wears of usefulness of a placement level on the pipe at end, with bolt hole, and this two hole is connected, the inherent hole that wears of end pipe is provided with the priming groove that can place the embedding folder near the bolt hole place, level holds a writing brush or pen-write to place to wear in the hole and by embedding and clips during combination, and in bolt hole, wear the locker piece in regular turn by bolt, the embedding folder, the spiral shell piece, and, press from both sides and reach build-in and live the effect of tightening that level holds a writing brush or pen-write and force the inclined thrust surface of fixture block and spiral shell piece to go to push embedding by the lock action of revolving of bolt.Above-mentioned this concealed tightening structure is appearance looks elegant, smooth not only, and mounting or dismounting are all very convenient, and it is good to tighten quality.

Further narrate with drawings and Examples below.

Description of drawings:

Fig. 1 is the scheme drawing of handgrip end tube bank locking structure commonly used.

Fig. 2 is a perspective exploded view of the present utility model.

Fig. 3 is a decomposition cut-away view of the present utility model.

Fig. 4 tightens preceding cuing open for the utility model and shows constitution diagram.

Fig. 5 shows constitution diagram for the utility model cuing open after tightening.

By Fig. 2～5 as seen, the concealed tightening structure of Handlebar of bicycle end pipe of the present utility model, handgrip end pipe (4) by the one forging molding, and the concealed tightening structure that is locked on this end pipe end (40) is formed, the locking termination (40) of end pipe is provided with and wears hole (41) and bolt hole (42), wearing hole (41) is connected in locking inside, termination (40) with bolt hole (42), it is characterized in that: the priming groove (43) of placing embedding folder (8) is located to be provided with at the close bolt hole (42) that wears hole (41) in locking inside, termination, establish spiral shell piece (5) by bolt (2) der group in the threaded hole, embedding folder (8) and fixture block (6), described embedding folder is the Y shape, its top is provided with one stroke perforation (81), the base jaw face is provided with on-slip silver (82), base jaw face shape is corresponding with priming groove (43), its central authorities of described spiral shell piece have the inner screw tooth hole (51) that matches with the outer tooth of bolt, spiral shell piece outer wall root edge is provided with inclined thrust surface (52), its central authorities of described fixture block are provided with through hole (61), the outside wall surface of one end is provided with and the corresponding inclined thrust surface of inclined thrust surface (52) (62), its other end is the plane, its front end of described bolt (7) is provided with the outer tooth (72) that matches with inner screw tooth hole (51), its rear end is bolt head (71), bolt (7) is written into by bolt hole (42), successively wear through hole on the fixture block (61), embedding folder up stroke perforation (81), the inner screw tooth hole (51) that then locks in the spiral shell piece is gone up the location.

When above-mentioned concealed tightening structure places the handgrip level to hold a writing brush or pen-write (3) end limit when end pipe (4) lock, be lock bolt (7), make bolt head (71) inner frieze (711) passing fixture block (6) and produce inside radial displacement, the outer tooth layer (72) of while bolt (7), also revolve guide screw piece (5) and produce outside radial displacement, the embedding folder (8) of circle's this moment between spiral shell piece (5) and fixture block (6) promptly is subjected to the folder effect that pushes away of spiral shell piece (5) and fixture block (6) simultaneously, by two inclined thrust surfaces (52), (62) it is moving to impel embedding folder (8) to give in the effective movable line-spacing of stroke perforation (81) downwards, and utilize the folder face be provided with non-slip nosing (82), go build-in the level in the hole (41) of wearing hold a writing brush or pen-write (3) fixing and reach the effect of tightening.

Group but also convenient had not only been hidden, torn open to this structure, and adopt the folder face clamping surface of non-slip nosing big, the build-in level reliability height that holds a writing brush or pen-write, and in addition, its does not have the disadvantage of fluting, and external form is more complete, thus the color and luster homogeneous, the outward appearance exquisiteness.

Claims (1)

1, a kind of concealed tightening structure of Handlebar of bicycle end pipe, handgrip end pipe (4) by the one forging molding, and the concealed tightening structure that is locked on this end pipe end (40) is formed, the locking termination (40) of end pipe is provided with and wears hole (41) and bolt hole (42), wearing hole (41) is connected in locking inside, termination (40) with bolt hole (42), it is characterized in that: the priming groove (43) of placing embedding folder (8) is located to be provided with at the close bolt hole (42) that wears hole (41) in locking inside, termination, establish spiral shell piece (5) by bolt (2) der group in the threaded hole, embedding folder (8) and fixture block (6), described embedding folder is

Shape, its top is provided with one stroke perforation (81), the base jaw face is provided with on-slip silver (82), base jaw face shape is corresponding with priming groove (43), its central authorities of described spiral shell piece have the inner screw tooth hole (51) that matches with the outer tooth of bolt, spiral shell piece outer wall root edge is provided with inclined thrust surface (52), its central authorities of described fixture block are provided with through hole (61), the outside wall surface of one end is provided with and the corresponding inclined thrust surface of inclined thrust surface (52) (62), its other end is the plane, its front end of described bolt (7) is provided with the outer tooth (72) that matches with inner screw tooth hole (51), its rear end is bolt head (71), bolt (7) is written into by bolt hole (42), successively wears through hole on the fixture block (61), embedding folder up stroke perforation (81), the inner screw tooth hole (51) that then locks in the spiral shell piece is gone up the location.

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