CN2193861Y

CN2193861Y - Front fork bearing seat of bicycle or unicycle

Info

Publication number: CN2193861Y
Application number: CN 94224689
Authority: CN
Inventors: 陈定兴
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-16
Filing date: 1994-08-16
Publication date: 1995-04-05
Anticipated expiration: 2004-08-16

Abstract

The utility model discloses a front fork bearing seat of bicycles or unicycles, which is formed in one step by the plastics and the rubbery material and comprises a bearing sleeve used for placing a bearing and an inserting plunger arranged on the bearing sleeve. Two grooves are arranged on the inserting plunger. The groove can be a pentangular groove, and a trigonal caulking groove is arranged in the pentangular groove, so that two hexagonal nuts can be respectively positioned in the groove and inserted in the trigonal caulking groove. The inserting stopping points opposite to the hexagonal nut are respectively provided with a through hole. The groove on the inserting plunger can also be a hexagonal groove. A through hole is arranged in the groove. The hexagonal nut can be directly arranged in the groove. Therefore, when the inserting plunger on a bearing seat is plugged with a front fork pipe, screw bolts can be penetrated and screwed in the hexagonal nut.

Description

Front fork bearing seat of bicycle or unicycle

The utility model relates to the front fork of a kind of bicycle or single wheel cycle, particularly the front fork bearing seat that links with bicycle or single wheel cycle wheel shaft.

At present, existing bicycle front fork such as Fig. 6, Fig. 7, shown in Figure 8, mainly be that the front fork bottom is made as flats, and form a groove that Open Side Down, perhaps directly bore a through hole or establish an adapter plate at the front fork pipe end, penetrate connection for wheel shaft, and the bearing that wheel relies on wheel center to be provided with makes front-wheel passive rotation under the driving of trailing wheel.

The structure of known a kind of front fork pipe end grafting bearing seat as shown in Figure 9, mainly be to utilize metal shaft bearing (A) on bearing sleeve (A1), to establish an inserting column (A2) with two screws (A21), and establish through hole (B1) in front fork tube (B) end corresponding section, so that inserting column (A2) directly inserts front fork tube (B) end, the through hole (B1) that bolt (C) passes front fork tube (B) is fixedly connected with the last screw (A21) of inserting column (A2).

Yet, metal shaft bearing manufacturing cost height, and for bearing can not become flexible in bearing seat, in order to avoid influence the location and the rotation of front-wheel, to the accuracy requirement height in bearing seat neck bearing hole, therefore, metal shaft bearing industrialization value of service also is short of to some extent.

The purpose of this utility model provides a kind of easy to assembly, and manufacturing cost is lower, is suitable for the bicycle or the single wheel cycle front fork bearing seat of actual use.

For achieving the above object, the utility model adopts plastics, the form by once with rubber bearing seat, this bearing seat comprises that a bearing sleeve and of placing bearing is located at the inserting column on the bearing sleeve, two five jiaos of grooves in the same way can be arranged on the inserting column cylinder circumferential surface, and relative its closed angle end medial surface is provided with a triangle caulking groove that caves in two 5 jiaos of grooves, form a link stopper between triangle caulking groove and the circumferential surface and make, and respectively be provided with a through hole with respect to place, hexagonal nut location in five jiaos of grooves, hexagonal nut can place in five jiaos of grooves, and the slippage embedding of one angle terminates in the triangle caulking groove, and its screw is just corresponding to through hole, and can with the bolted connection that penetrates.

On this inserting column cylinder circumferential surface two hexagonal groove can be arranged also, and in this hexagonal groove, respectively be provided with a through hole so that hexagonal nut can directly embed hexagonal groove with the bolted connection that penetrates.

Because the utility model adopts plastics, the bearing seat of form by once with rubber, plastics, the characteristic of elastomeric material makes bearing and bearing seat neck bearing hole adopt the interference fit assembling to be more prone to, and the bearing seat moulding that plastics, rubber are made is rapid, low cost of manufacture, and can as required inserting column be made the inserting column that has the nut inserts, make bolt to be anchored on the bearing seat more efficiently.

Below in conjunction with the drawings and specific embodiments the utility model is further described.

Fig. 1 is the transparent view of first embodiment of front fork bearing seat of the present utility model;

Fig. 2 is the lateral plan of embodiment front fork bearing seat shown in Figure 1;

Fig. 3 is the front elevation of embodiment front fork bearing seat shown in Figure 1;

Fig. 4 is the transparent view of second embodiment of front fork bearing seat of the present utility model;

Fig. 5 is the lateral plan of embodiment front fork bearing seat shown in Figure 4;

Fig. 6, Fig. 7, Fig. 8 are the constructionals drawing of existing bicycle front fork;

Fig. 9 is known front fork bearing seat and front fork assembling scheme drawing.Bearing seat shown in Figure 1 (1) is that usefulness plastics, elastomeric material are one-time formed, and this bearing seat (1) comprises the bearing sleeve (11) and inserting column (12) two parts provided thereon of placing bearing; Wherein bearing sleeve (11) inboard have one with bearing size corresponding bearing hole (111), the through hole (112) of a relative wheel wheel shaft is arranged in its hole; And this inserting column (12) is characterised in that: two five jiaos of grooves (121) (122) are in the same way arranged on the cylinder circumference, its line of centers is perpendicular to inserting column (12) axis, this five chamfered groove (121) (122) is used to deposit hexagonal nut (2), and the medial surface with respect to the downside closed angle end forms the triangle caulking groove (123) (124) that caves in two jiaos of grooves (121) (122), form a link stopper (125) between triangle caulking groove (123) (124) and the inserting column circumferential surface, and place, relative hexagonal nut (2) embedding location respectively is provided with a through hole (126) (127) in two 5 jiaos of grooves (121) (122).

When assembling, as Fig. 2, shown in Figure 3, earlier two hexagonal nuts (2) are placed two 5 chamfered grooves (121) (122) respectively, and make bearing seat (1) be inverted " this upside down needs according to the manufacturing line assembling and is provided with; it is when cooperating front fork tube (3) assembling; be inverted with front fork tube (3) ", so that two hexagonal nuts (2) slip makes the one angle just in time be embedded in the triangle caulking groove (123) (124) on the flat limit of five jiaos of grooves (121) (122) and is limited to link stopper (125), make two hexagonal nuts (2) just in time corresponding to two through hole (126) (127) simultaneously, front fork tube (3) is socketed on the inserting column (12) of bearing seat (1), bolt (4) can be passed to give the through hole of establishing (31) on the front fork tube (3) and easily screw in hexagonal nut (2) and be fixed; And when dismounting hexagonal nut (2), also be easy to take out.

Shown in Figure 4 is second embodiment of the utility model bearing seat (1) inserting column (12), it is two hexagonal groove (128) and respectively establish a through hole (129) in groove of directly being shaped on inserting column (12) cylinder, make hexagonal nut (2) can directly embed in the hexagonal groove (128), and when front fork tube (3) is inserted in inserting column (12), can make bolt (4) screw in hexagonal nut (2) through the through hole (129) of inserting column (12), make bearing seat (1) and front fork tube (3) fixed (as shown in Figure 5) by front fork tube (3) perforation (31).

This hexagonal nut (2) also can directly give a side that is embedded in inserting column (12) earlier when bearing seat (1) compression molding, and offers a through hole at opposite side, penetrates fastening for bolt.

Claims

1, the front fork bearing seat of a kind of bicycle or single wheel cycle, comprise that one places the bearing sleeve (11) and an inserting column (12) provided thereon of bearing, it is characterized in that: use plastics, elastomeric material one-shot forming bearing seat (1), two five jiaos of grooves (121) (122) are in the same way arranged on inserting column (12) the cylinder circumferential surface, and relative its closed angle end medial surface is provided with the triangle caulking groove (123) (124) of a depression and makes and forms a link stopper (125) between triangle caulking groove (123) (124) and the circumferential surface in two 5 jiaos of grooves (121) (122), and respectively be provided with a through hole (126) (127) with respect to place, hexagonal nut (2) location in two 5 jiaos of grooves (121) (122), hexagonal nut (2) can place in five jiaos of grooves (121) (122), and the slippage embedding of one angle terminates in the triangle caulking groove (123) (124), its screw is just in time corresponding to through hole (126) (127), and is connected with the bolt that penetrates (4).

2, front fork bearing seat according to claim 1, it is characterized in that: on inserting column (12) the cylinder circumferential surface two hexagonal groove (128) are arranged, and respectively be provided with a through hole (129) in two hexagonal groove (128), hexagonal nut (2) can directly embed hexagonal groove (128) and be connected with the bolt that penetrates (4).

3, front fork bearing seat according to claim 1, it is characterized in that: hexagonal nut (2) can give when bearing seat (1) compression molding and be embedded in inserting column (12) one sides earlier, and offer a through hole at corresponding opposite side, so that can passing through hole, bolt is connected with hexagonal nut (2).