CN201670320U - Improvement of Folding Bicycle Structure - Google Patents

Abstract

The utility model is an improved folding bicycle structure, which makes the folding bicycle more convenient to use. The main features are: a frame unit is provided with a front rod, a rear rod, a connecting rod, a front bottom rod and a rear bottom rod, which are pivotally combined into one, and a handle unit is provided with a joint at the upper end of a vertical rod and pivotally assembled into two handle rods. Through the above structure, the front rod, the rear rod and the connecting rod can be folded, and the handle rod can also be folded to reduce the volume, and the front and rear wheels can be placed against the ground and the handle rod can be hand-held and pushed, so as to achieve the effect of convenient carrying and moving when not riding.

Description

Improvement of Folding Bicycle Structure

technical field

The utility model is a structural improvement of a folding car. The main technology and purpose are: the frame unit can be folded, and the handle unit can also be folded, so that the wheels touch the ground and the handle unit is pushed by the hand, so that it is convenient to carry The effect of movement.

Background technique

Check, the existing foldable bicycles are of a great variety, which are generally set as follows: the frame unit can be bent and folded in the front and rear halves, and the handle unit is set so that the vertical bar of the assembled handle bar is bent downwards and folded on the vehicle frame unit. Above-mentioned structure has following shortcoming in fact:

(1) The handle unit is only "bending down the vertical bar", and the handle bar is still in a "line shape" without bending. Therefore, the handle bar is still prominent and has a large volume.

(2) The front and rear parts of the frame unit are bent, the front and rear wheels are stacked irregularly, and cannot be balanced on the ground, and the handle bar of the handle unit is also irregular. Therefore, when not in use When you want to carry it around, you can only carry it in a car, or put it in a large backpack and move it on your back. In other words, after folding, you can't provide the front and rear wheels to touch the ground so that users can easily push it with their hands.

Utility model content

The utility model aims at improving the above-mentioned inconvenient problem of carrying and moving when not in use, and it is designed so that the user can easily push it with one hand.

The utility model proposes an improvement in the structure of a folding bicycle, which is characterized in that the frame unit is set to have a front bar, a rear bar, a front bottom bar, and a rear bottom bar, and the bottom end of the front bar is assembled with a front wheel, and the upper end is combined with a handle unit and has a The connecting rod is assembled with the rear wheel at the bottom of the rear rod. The connecting rod pivot at the upper end of the front rod is combined with the upper end of the rear rod. The end and rear bottom rod pivots are combined at the bottom of the rear rod. The above structure makes the front and rear rods and connecting rods bend, so that the front and rear wheels can be neatly touched to the ground and facilitated to be pushed.

The utility model also proposes a structural improvement of a folding bicycle, which is characterized in that the frame unit is configured to have a front bar, a rear bar, a front bottom bar, and a rear bottom bar, and the bottom end of the front bar is assembled with a front wheel and the upper end is combined with a handle unit. The rear wheel is assembled at the bottom end of the rear rod, and the upper end is combined with the front rod pivot. The front and rear bottom rods are pivotally connected together. And it is combined with the bottom end of the front bottom rod, and one end of the rear bottom rod is also combined with the rear rod pivot. The pivot structure of the front and rear bottom rods is set as one end of the front bottom rod is provided with a joint block, and the bottom end of the joint block is provided with a pivot joint seat shaft One end of the rear bottom bar is also provided with a joint block, and the bottom end of the joint block is provided with a pivot seat shaft hole. The pivot seat of the front and rear bottom bar joint blocks can be fitted with each other, and the shaft hole can be assembled with the shaft bolt. To make the front and rear bottom bars pivotally connected together, the joint block of the rear bottom bar is provided with a screw hole to form a locking bolt, and the locking bolt is provided with a limiting block. When the two joint blocks of the front and rear bottom bars are close together , the limiting block is combined on the upper ends of the two engaging blocks and locked with the locking bolt, so that the two engaging blocks cannot be separated, and then the front and rear bottom bars are set in a straight line. When the locking bolt is released, the limiting block can Separate the two joint blocks, and have to allow the two joint blocks to separate for the front and rear bottom bars to be bent.

Description of drawings

Fig. 1 is the expanded state diagram of the overall structure of the present utility model;

Fig. 2 is a folding state diagram of the utility model;

Fig. 3 is a three-dimensional exploded view of the rear, front and rear bottom bars of the present invention;

Fig. 4 is a cross-sectional view of the combined unfolded state of the front and rear bottom bars of the present invention;

Fig. 5 is a folded state diagram of the front and rear bottom bars of the present invention;

Fig. 6 is a diagram of the unfolded state of the handle unit of the present utility model;

Fig. 7 is a diagram of the folded state of the handle unit of the present invention.

[Description of main component symbols]

10 frame unit 21 vertical bar

11 front pole 22 connector

12 Rear lever 23 Quick release bolts

13 connecting rod 24, 25 handle bar

14 Front Bottom Bar 30 Axle Bolt

15 rear bottom bar 31 limited block

16, 18 joint block 32 locking bolt

17, 19 Pivot seat 33 Elastic element

160 positioning slot 180 screw hole

170, 190 shaft hole 181 positioning flange

20 handle units 110 front wheels

121 seat post 120 rear wheel

Detailed ways

Please refer to Fig. 1, Fig. 2, Fig. 6, Fig. 7, vehicle frame unit 10 is set as front bar 11, rear bar 12, front bottom bar 14, rear bottom bar 15, and front wheel 110, upper end assembly are assembled at the bottom end of front bar 11 The handle unit 20 has a connecting rod 13, the rear wheel 120 is assembled at the bottom of the rear rod 12, and the seat post 121 is assembled at the upper end, and the connecting rod 13 at the upper end of the front rod 11 is pivotally assembled at the upper end of the rear rod 12, the front bottom rod 14, the rear bottom Bar 15 is pivotally connected as a whole, and can be bent, and front bottom bar 14 pivots are combined in front bar 11 bottoms, and rear bottom bar 15 pivots are combined in rear bar 12 bottoms, and front, rear bar 11,12 and 12 are obtained by above-mentioned structure. The connecting rod 13 is bent so that the front and rear wheels 110, 120 can be pushed neatly to the ground; the handle unit 20 is set to have a vertical rod 21, and the upper end of the vertical rod 21 is provided with a joint 22, and the two ends of the joint 22 are pivoted to form a handle bar 24, 25, the joint 22 is also provided with quick-release bolts 23, so that the joint 22 can clamp and position the second handle bar 24, 25, and loosen the bending. Through the above structure, the second handle bar 24, 25 can be closed with the joint 22. The foldable vehicle frame unit 10 can be grasped by hand and conveniently pushed and folded.

Please refer to Fig. 1, Fig. 2, comprise: vehicle frame unit 10, handle unit 20, front wheel 110, rear wheel 120, vehicle frame unit 10 is set to have front bar 11, rear bar 12, front bottom bar 14, rear bottom bar 15. The bottom end of the front rod 11 is assembled with the front wheel 110, the upper end has a connecting rod 13, the bottom end of the rear rod 12 is assembled with the rear wheel 120, the upper end has a seat post 121 and the connecting rod 13 pivotally assembled at the upper end of the front rod 11, the front and rear bottoms Rods 14 and 15 are pivotally connected together, one end of front bottom rod 14 is combined with the bottom end of front rod 11, one end of rear bottom rod 15 is also combined with rear rod 12, and the upper end of front rod 11 is combined with handle unit 20.

The pivot joint structure of the front and rear bottom bars 14 and 15 of the present utility model is set as shown in Fig. 3, Fig. 4, and Fig. 5. One end of the front bottom bar 14 is provided with a joint block 16, and the bottom end of the joint block 16 is provided with a pivot joint. Seat 17 shaft hole 170, one end of rear bottom rod 15 is also provided with joint block 18, and the bottom end of joint block 18 is provided with pivot seat 19 shaft hole 190, front and rear bottom bar 14,15 joint blocks 16,18 pivot seat 17, 19 can fit each other, and cooperate with the shaft bolt 30 to pass through the shaft holes 170, 190, so that the front and rear bottom bars 14, 15 are pivotally connected together, and the joint block 18 of the rear bottom bar 15 is provided with screw holes 180 and a locking bolt 32 is set, and the locking bolt 32 is screwed with a limiting block 31 and an elastic element 33. When the two engaging blocks 16, 18 of the front and rear bottom bars 14, 15 are close to each other, the limiting block 31 is combined with the two engaging blocks. 16, 18 upper ends, and cooperate with locking bolt 32 to lock, and must make two joint pieces 16, 18 inseparable, and then must make front and rear bottom bar 14, 15 set into a straight line, when loosening locking bolt 32, elastic The element 33 can make the limiting block 31 withdraw from the two engaging blocks 16, 18, so that the two engaging blocks 16, 18 can be separated for the front and rear bottom bars 14, 15 to be bent; A positioning groove 160 can be provided, and a corresponding positioning flange 181 is provided in the joint block 18 of the rear bottom bar 15. When the two joint blocks 16, 18 are close together, the positioning groove 160 and the positioning flange 181 can be fitted together to form an auxiliary joint. The effect that the positioning of the two joint blocks 16, 18 is not loose.

Function and effect of this utility model: as shown in Figure 1, Figure 4 and Figure 6, the connecting rod 13 and the rear rod 12 of the front rod 11 of the vehicle frame unit 10 are in an unfolded state, and the front and rear bottom rods 14, 15 is in the unfolded state, the front bottom bar 14 and the front bar 11, the rear bottom bar 15 and the rear bar 12 are in the unfolded state, and the two handle bars 24, 25 of the handle unit 20 are also in the unfolded state. State of riding. When folding is not used, as shown in Fig. 2, Fig. 5 and Fig. 7, first loosen the locking bolts 32 of the front and rear bottom bars 14, 15 so that the front and rear bottom bars 14, 15 can be bent into an inverted V shape, the front rod 11 connecting rod 13 and the rear rod 12 can also be bent, so that the front rod 11, the connecting rod 13 and the rear rod 12 can be bent, and the quick release bolt 23 of the joint 22 of the handle unit 20 can be loosened , so that the two handlebars 24, 25 are bent (as shown in Figure 7), the front and rear wheels 110, 120 can touch the ground neatly, and the handlebar 24 is also horizontal to the ground, allowing the user to Holding (shown in dotted line in Figure 2) the handle bar 24 or the connecting bar 13 by hand, it is very easy to promote the whole. Therefore, the utility model can make the two wheels reach the ground in the folded state, and push the car body with one hand, so that it is very convenient to carry and move.

To sum up, the structure of the present utility model has excellent practicability and improved efficacy.

Claims (5)

1. An improvement in the structure of a folding bicycle, characterized in that its vehicle frame unit is set to have a front bar, a rear bar, a front bottom bar, and a rear bottom bar; , the rear wheel is assembled at the bottom of the rear rod, the connecting rod pivot at the upper end of the front rod is combined with the upper end of the rear rod, the front bottom rod and the rear bottom rod are pivotally connected and can be bent, the front bottom rod pivot is combined at the bottom of the front rod, The rear bottom rod pivot is combined at the bottom end of the rear rod, and the front and rear rods and the connecting rod are bent through the above structure, so that the front and rear wheels can touch the ground neatly and be conveniently pushed. 2. An improvement in the structure of a folding bicycle, characterized in that its vehicle frame unit is set to have a front bar, a rear bar, a front bottom bar, and a rear bottom bar, the front wheel is assembled at the bottom end of the front bar, the upper end is combined with a handle unit, and the rear bar bottom The rear wheel is assembled at the end, and the upper end is combined with the front rod pivot. The bottom end of the rod is pivotally combined, and one end of the rear bottom rod is also combined with the rear rod pivot. The pivot joint structure of the front and rear bottom rods is set as one end of the front bottom rod is provided with a joint block, and the bottom end of the joint block is provided with a pivot hole for the pivot seat. One end of the bottom bar is also provided with a joint block, and the bottom end of the joint block is provided with a shaft hole of a pivot seat. The pivot seats of the joint blocks of the front and rear bottom bars can be fitted with each other and matched with the shaft bolts to pass through the shaft holes, so that the The front and rear bottom bars are pivotally connected together, and the joint block of the rear bottom bar is provided with a screw hole to form a locking bolt. The locking bolt is provided with a limiting block. Combined with the upper ends of the two joint blocks and locked with the locking bolt, the two joint blocks cannot be separated, and then the front and rear bottom bars are set in a straight line. When the locking bolt is released, the two joints can be separated from the limiting block. Block, and must allow two joint blocks to separate for front and rear bottom bar can bend. 3. The structural improvement of the folding bicycle according to claim 1, characterized in that the handle unit is configured to have a vertical bar, the upper end of the vertical bar is provided with a joint, the two ends of the joint are pivotally assembled with the handle bar, and the joint is also provided with a quick release bolt , so that the joint is clamped and positioned on the second handle bar, and the bending is loosened. Through the above-mentioned structure, the second handle bar and the joint can be folded to obtain a frame unit that is easy to hold and push to fold. 4. The structural improvement of the folding bicycle according to claim 2, characterized in that a positioning groove can be provided in the joint block of the front bottom bar, and a corresponding positioning flange can be provided in the joint block of the rear bottom bar, when the two joint blocks are close When combined, the positioning groove and the positioning flange can be fitted with each other to form an effect that the positioning of the two joint blocks is not loosened. 5. The structural improvement of the folding bicycle according to claim 2, characterized in that an elastic element is provided between the rear bottom bar engaging block and the limiting block, and when the locking bolt is released, the elastic force of the elastic element can push the limiting block to disengage piece.

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