CN2671940Y - Hidden folding structure of folding bicycle - Google Patents

Abstract

The utility model relates to a hidden beta structure of folding bicycle mainly is respectively equipped with a folding box in folding bicycle's two corresponding ends of folding pipe, and two folding boxes utilize the pivot pin joint in folding box by the linking seat that a both ends respectively have the pin joint hole, recycle one can hide the quick closure of two folding boxes or open in folding box's quick detach group. The utility model discloses folding easy operation has splendid hasp and joint strength simultaneously.

Description

Hidden folding structure of folding bicycle

technical field

The utility model relates to a folding bicycle, in particular to a folding box located at two corresponding ends of a folding tube of the folding bicycle, which can be folded and closed when necessary, and has beautiful appearance and simple folding operation. Folding structure with excellent lock and link strength.

Background technique

Foldable bicycles, as the name suggests, have the function of folding and folding, and are small in size after folding. They are extremely convenient for carrying or storing and transporting. Therefore, they are more and more popular among consumers. Among them, early folding bicycles are shown in Figures 1 and 2. As shown, a folding structure 20 is mainly arranged on the upper tube 10 of the bicycle frame or between the upper and lower tubes 10. The folding structure 20 includes two joint seats 21, a pivot shaft 22 and a quick release group 23. The two Combining seats 21 are respectively welded on the upper tube 10 or the two folded ends of the upper and lower tubes 10, and the pivot shaft 22 is pierced and pivotally connected to one side of the two combining seats 21, so that the two combining seats 21 can be formed by the pivot shaft 22. The axis is pivoted and folded, and the quick release group 23 is installed on the other side of the two joint seats 21, which can be locked and fixed when the two joint seats 21 are joined together, so that the folding structure 20 has the function of folding and folding bicycles; , the disadvantage of the folding structure 20 is:

1. The two sides of the seat body of the folding structure are protruding relative to the diameter of the upper and lower pipes, so as to facilitate the mutual pivot connection and the installation and matching of the quick release group, so the overall shape is quite abrupt, which affects the aesthetics.

2. The protruding folding structure is located in the middle of the upper and lower tubes. Therefore, when riding and pedaling, the rider's legs, knees, etc. may touch it and be injured, thereby affecting riding safety.

As shown in Fig. 3, it is another kind of conventional bicycle folding structure, which uses a folding tube 30 to set a pivot shaft 31 on one side of the butt joint of the two folding ends, and form a concave part 32 in parallel on the other side, and then place it on the concave part 32. The device is composed of a lock 40; wherein, as shown in Figure 4, the lock 40 includes a hook seat 41, a pivot seat 42, a wrench 43 and a clasp 44, and the hook seat 41 and the pivot The sockets 42 are respectively screwed to the two opposite parallel sides of the recessed part 32. At the same time, the wrench 43 and the pivot seat 42 are mutually pivoted. One end of the wrench 43 is properly connected with the clasp 44, so that the wrench 43 is subjected to internal pressure or external pressure. When the buckle is loosened, the clasp 44 and the hook seat 41 can be interlocked to be hooked or loosened, so that the two folded ends can be connected firmly, or the pivot shaft 31 on one side can be used to perform a folding action.

However, this folding structure uses the recessed part of the folding end and cooperates with the locking device, which can effectively reduce the degree of exposure and improve the aesthetics of the shape, but the fly in the ointment is that the pivot shaft is still exposed, which causes great visual damage; secondly, Generally, during the riding process of a bicycle, the shaking and vibration of the vehicle body are unavoidable. Therefore, the pivot seat and the hook seat of the locking device of the folding structure are only fixed to the concave parts of the two folding ends by using the general screw locks. The connection strength is obviously insufficient, and it is easily affected by shaking and vibration, and there is a possibility of loosening and falling; thirdly, the joints of the mutual screw locks are all designed with a thin plate body, and its strength is obviously insufficient, and it is easy to deform and break when the force is applied. Seriously affect the safety of riding; finally, if the folding structure is subjected to an unspecified lateral force during riding, it will act on each screw lock or the parts subject to the screw lock, if the lock of the folding structure The buckle is not strong enough and is easily damaged, which affects riding safety. Therefore, how to create another folding structure based on the shortcomings of the above-mentioned folding structure while taking into account the advantages of aesthetic appearance, convenient operation and use, and good structural strength will be eagerly awaited by relevant operators and consumers.

Contents of the invention

In view of this, the designer has created a hidden folding structure for folding bicycles by relying on long-term research and integration of various folding structures of bicycles. The utility model has beautiful appearance, simple folding operation, and excellent lock Buckle and link strength.

The utility model is mainly provided with a folding box at the two corresponding ends of the folding tube of the folding bicycle, and the two folding boxes are pivotally connected in the folding box by a connecting seat with a pivot hole at each end, and then a hidden folding box is used. The quick release unit inside the folding box quickly locks or opens the two folding boxes.

It can be seen from the above description that the hidden folding structure of the folding bicycle of the present invention can achieve the following effects:

1. Beautiful shape and safe rideability: Since all the components of the folding structure of the utility model do not expose the outer edge of the folding tube, it has a better aesthetic shape than the usual situation where some components protrude, and it can be ridden at the same time The rider is also less likely to be injured by touching the folding structure, so it is more safe to ride.

2. The structure of the locking connection is stable: because the two folding boxes of the utility model are designed to be socket welded with the two folding ends of the folding tube, the joint structure has high strength, which can ensure the pivotal folding of the two folding boxes and the two folding ends. The stable buckle connection of the box is also used to lock the quick release group of the two folding boxes. When the two folding boxes are pivoted to face each other, the wrench pressing body can be tightly buckled into the U-shaped groove in the folding box accommodating groove. On the fixed seat, it can also effectively prevent the quick release group from being loosened during riding, thereby ensuring the safety and firmness of riding.

3. Easy and fast operation: Since the two folding boxes of the utility model are locked or opened by the quick release group hidden in the folding box, the overall operation is very simple and fast, and anyone can easily operate it, and Easy to operate

Description of drawings

Figure 1 is a schematic view of the appearance of a conventional bicycle folding structure.

Fig. 2 is a three-dimensional appearance view of a conventional bicycle folding structure.

Fig. 3 is a three-dimensional assembled view of another conventional bicycle folding structure.

FIG. 4 is an exploded perspective view of another conventional folding structure.

Fig. 5 is a three-dimensional assembled view of the folding structure of the present invention.

Fig. 6 is a three-dimensional exploded view of the folding structure of the present invention.

Fig. 7 is a schematic plan view of the folded structure of the utility model in a joint state.

Fig. 8 is a schematic side sectional view of the folded structure of the utility model in a state of joining.

Fig. 9 is a schematic diagram of the unlocking action of the folding structure of the present invention.

Fig. 10 is a schematic diagram of the pivoting and folding action of the folding structure of the present invention.

Fig. 11 is an assembly diagram of a preferred embodiment of the folding structure of the present invention.

Fig. 12 is a perspective view of another embodiment of the folding structure of the present invention.

(Description of figure number)

10...upper and lower tubes 20...folding structure

21...Joint seat 22...Pivoting shaft

23...Quick release group 30...Folding tube

31...pivot shaft 32...recessed part

40...Lock 41...Hook seat

42...Pivot seat 43...Wrench

44…Close hook 50…Folding tube

51...folding end 510...notch

52...folding end 520...notch

60...folding structure 61...folding box

610...accommodating groove 6101...screw hole

611...seat body 6110...pivot groove

6111…Notches 6112…Slots

6113…Trapezoidal groove 6114…Socket

62…folding box 620…capacity groove

621...seat body 6210...pivot groove

6211…Notch 6212…Trapezoidal bump

6213...socket part 63...connecting seat

630…pivot hole 64…pivot pin

65...Quick release group 651...Wrench pressing body

6510…eccentric flange 6511…buckle groove

6512...Groove 652...Lock lever

6520…Bushing 6521…Compression spring

6522…Sleeve 6523…Nut

653...Shaft bolt 66...U-shaped fixed seat

660…Pivot ear 6601…Horizontal long pivot hole

661...elastic buckle 62...bottom plate

6621…Positioning tab 6622…Perforation

Detailed ways

As shown in Figures 5-8, the hidden folding structure 60 of the folding bicycle of the present invention is mainly provided with a folding box 61, 62 at the two corresponding ends of the folding tube 50 of the folding bicycle, and one of the folding boxes 61 is provided with a capacity The groove 610 accommodates a quick release group 65, and the pivotal end of the accommodation groove 610 is formed into a base body 611 having the same shape as the folding tube 50, and one side of the base body 611 is provided with a pivotal groove 6110 for one or two The connection seat 63 with a pivot hole 630 at each end is pivotally connected in the seat body 611 by a pivot pin 64, and the outer end of the seat body 611 is provided with a notch 6111 for the quick release group 65 locking lever 652 to accommodate; and Another folding box 62 is opposite to the above-mentioned folding box 61, and the pivotal end of its accommodating groove 620 is also shaped as a seat body 621 having the same shape as the folding tube 50, and the pivot joint groove 6210 on one side of the seat body 621 is Like the pivot hole 630 at the other end of the connection seat 63, it is pivotally connected to the seat body 621 by a pivot pin 64. The outer end of the seat body 621 is also provided with a notch 6211 opposite to accommodate the locking lever 652 of the quick release group 65; And when the pivot joint grooves 6110, 6210 on one side of the two folding boxes 61, 62 are pivotally connected with the connecting seat 63, the connecting seat 63 is just accommodated in the pivot joint grooves 6110, 6210, and does not protrude from the two folding boxes 61, 62. Outside; the opposite ends of the other two folding boxes 61, 62 pivotally connected are fixed by a quick release group 65, and the quick release group 65 is composed of a puller 651 with an eccentric flange 6510 pivotally connected to a lock lever 652 , wherein the buckle groove 6511 is recessed at appropriate places on both sides of the pulling body 651, and a groove 6612 is opened in the middle section of the eccentric flange 6510 for the pulling body 651 pivoted by the shaft bolt 653 and the locking lever 652 to pull. Rotate, set a bushing 6520, a compression spring 6521, a sleeve 6522 in sequence on the locking rod 652, and then lock a nut 6523 at the threaded section at the tail end, and then form the quick release group 65 again It is placed in a U-shaped fixing seat 66 and hidden and fixed in the accommodation groove 610 of the folding box 61. The U-shaped fixing seat 66 is made by stamping and bending a plate body integrally, and a horizontal long pivot is formed on each side. The pivot ear 660 of the hole 6601 and a tail end have a concave arc-shaped elastic buckle 661, which is just for the pivot connection of the shaft bolt 653 of the quick release group 65 and the pressing body 651 and the fastening of the buckle grooves 6511 on both sides. The center of the bottom plate 662 The predetermined position protrudes upwards with a positioning lug 6621 to resist the pulling body 651, and the U-shaped fixing seat 66 protrudes from the bottom plate 662 to two perforations 6622 at the front edge and near the rear edge of the two pivot ears 660, respectively inserted Place the front edge of the bottom of the receiving groove 610 of the folding box 61 into the slot 6112 in the base body 611 and then use screws to lock it into the predetermined screw hole 6101 at the bottom of the receiving groove 610 through two through holes 6622 .

Secondly, the docking end surfaces of the seat bodies 611, 621 of the two folding boxes 61, 62 are further provided with trapezoidal grooves 6113 and protrusions 6212 which are fitted with each other, as a reference when the two folding boxes 61, 62 are docked.

Again, the utility model is respectively provided with a notch 510,520 that just accommodates the frame edges of the two folding boxes 61,62 at the two folding ends 51,52 of the folding tube 50, and the two folding boxes 61,62 The inner side of the seat body 611 , 621 forms a step-shaped smaller socket portion 6114 , 6213 , and the socket portion 6114 , 6213 is just inserted into the two folded ends 51 , 52 of the folded tube 50 .

The above is an overview of the structure, position and mutual connection relationship of each component in the preferred embodiment of the utility model; then, the actions and expected effects of the utility model are stated as follows:

As shown in Figures 7 and 8, when the hidden folding structure 60 of the present invention is locked, the two folding boxes 61, 62 are pivoted into a relative shape by the connecting seat 63, and at this time, the locking lever 652 of the quick release group 65 is Turn and span across the notches 6111, 6211 of the two folding boxes 61, 62 seat bodies 611, 621, and because the sleeve tube 6522 of the locking rod 652 is only in order not to expose the compression spring 6521, so its length does not exceed two The notch 6111, 6211 of the seat body 611, 621 of the folding box 61, 62 is limited, so after adjusting the nut 6523 at the tail end of the locking rod 652 to an appropriate tightness, the puller pressing body 651 of the quick release group 65 can be aligned Press down in the accommodation groove 610 of the folding box 61, and use the eccentric flange 6510 of the wrench pressing body 651 to tighten the two folding boxes 61, 62, and because the pulling body 651 will produce a slight lateral displacement due to the effect of the eccentric flange 6510 when pivoting, so the pivot ears 660 on both sides of the U-shaped fixing seat 66 form a horizontal long pivot hole 6601 to make the pulling body 651 and The pivot pin 653 of the locking lever 652 is properly displaced in space (as shown in FIG. 9 ).

And when the hidden folding structure 60 of the present utility model is folded and folded, the above-mentioned action is reversed, and the two folding boxes 61, 62 can be formed into a 180-degree half-folded state (as shown in FIGS. 9 and 10 ).

In addition, as shown in FIG. 11 , a schematic diagram of an assembly of a preferred embodiment of the hidden folding structure 60 of the folding bicycle of the present invention. It can be set at an oblique shape perpendicular to the ground, but the connecting seats 63 of the two folding boxes 61, 62 must remain horizontally pivoted so that the front and rear wheels can overlap and fold. As shown in FIG. 12 , it is a perspective view of the structure of the embodiment when the folded tube is in a horizontal state.

To sum up, the hidden folding structure of the folding bicycle of the present invention provides a folding tube of the folding bicycle, which can be folded and closed when necessary, and has the advantages of beautiful appearance, easy operability and excellent locking strength. effect, so that the whole has industrial practicability and cost-effectiveness.

The above are the specific embodiments of the utility model and the applied technical principles. If the changes made according to the concept of the utility model are not beyond the scope covered by the description and drawings, all should Within the scope of the present utility model.

Claims (10)

1. A concealed folding structure of a folding bicycle, characterized in that two corresponding ends of the folding tube of the folding bicycle are respectively provided with a folding box, and the two folding boxes are pivotally connected by a connecting seat with a pivot hole at each end using a pivot pin In the folding box, use a quick release unit that can be hidden in the folding box to quickly lock or open the two folding boxes. 2. The hidden folding structure of a folding bicycle according to claim 1, characterized in that the two folding boxes are provided with accommodating grooves for the quick-release group to accommodate, and the pivotal ends of the accommodating grooves are formed to be aligned with the folding tube The seat body with the same shape, one side of the seat body is provided with a pivot joint groove, for a connecting seat with pivot joint holes at both ends to be pivotally connected to the seat body by a pivot pin, and a quick-release group lock is provided at the outer end of the seat body The notch for the lever accommodation. 3 . The hidden folding structure of the folding bicycle according to claim 1 , wherein the quick release assembly is composed of a puller body with an eccentric flange pivotally connected with a locking lever. 4 . 4. The hidden folding structure of the folding bicycle according to claim 1 or 3, characterized in that the two sides of the quick-release assembly puller are provided with buckle grooves at appropriate places, and the middle section of the eccentric flange is opened with a groove , for a pivoting body pivoted by a shaft bolt and a locking lever to turn. A bushing, a compression spring, and a sleeve are sequentially sleeved on the locking lever, and then a screw is locked at the threaded section at the tail end. cap. 5. The hidden folding structure of the folding bicycle according to claim 1 or 3, characterized in that the quick release assembly is pivotally placed in a U-shaped fixing seat and hidden and fixed in the receiving groove of the folding box. 6. The hidden folding structure of a folding bicycle according to claim 5, characterized in that the U-shaped fixing seat is formed by stamping and bending a plate body integrally, and a pivot ear with a horizontally long pivot hole and a pivot ear are formed on each side. The tail end has an elastic buckle with a concave arc shape, and a positioning lug protrudes upwards from the predetermined central part of the bottom plate, and the bottom plate protrudes from the front edge and near the rear edge of the two pivot ears with perforations, which can be inserted separately. After the front edge of the bottom of the accommodating groove of the folding box extends into the slot in the seat body, the screw is locked in the predetermined screw hole at the bottom of the accommodating groove through the perforation. 7. The hidden folding structure of the folding bicycle according to claim 1, characterized in that the butt end faces of the seat bodies of the two folding boxes are further provided with grooves and projections that fit into each other. 8. The hidden folding structure of a folding bicycle according to claim 7, wherein the groove and the protrusion are trapezoidal. 9. The concealed folding structure of a folding bicycle according to claim 1, wherein the two folding ends of the folding tube are respectively provided with a notch which is just enough to allow the two folding box accommodating groove frame edges to be nested therein. 10. The hidden folding structure of the folding bicycle according to claim 1, characterized in that the inner sides of the two folding box seats form a step-shaped smaller socket, and the socket is just inserted into the two folds of the folding tube. inside the end tube.

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