TWM494115U - Movable joint for foldable vehicle frame - Google Patents

Description

Folding frame with movable joint

The utility model relates to the technical field of folding bicycles, in particular to movable joints for folding frames.

Chinese Patent No. CN201320326963.1 discloses a bicycle folder and bicycle device on December 4, 2013, including a front folding piece and a rear folding piece for connecting with a frame or standpipe, a handle, the front folding piece and the rear The folded piece is hinged on one side, and the other side of the front folded piece and the rear folded piece are respectively provided with a front bracket and a rear bracket, and the front bracket is embedded with a shaft bushing, the rear bracket It is hinged with the handle, and a positioning pin is arranged inside the handle. The structure of the folder has a complicated structure and a small application range (not applicable to baby carriages, luggage carts, trolleys, etc.). In addition, when the bicycle uses the folder and is folded, the whole vehicle is folded back and forth by the folder, and a large spatial position is required for the operation.

The purpose of the present invention is to overcome the deficiencies of the prior art described above, and to provide a movable joint for a folding frame which has a simple structure, a reasonable structure, a wide application range, a good occlusion effect, and can realize multi-angle adjustment.

The specific content of the present creation is as follows: a movable joint for folding a frame, wherein the movable joint comprises a first clutch block, a second clutch block, a drawbar and a handle, and the pull rod runs through The first clutch block and the second clutch block, the first clutch block and the second clutch block are matched by the tooth surface, one end of the pull rod is connected with the nut, the other end of the pull rod is provided with a cross pin, and the end of the handle is provided with an eccentric cam, and the eccentric cam Connected to the horizontal pin.

For the purpose of the present invention, the following technical measures can also be adopted: as a more specific solution, the opposite faces of the first clutch block and the second clutch block are respectively provided with a first tooth surface and a second tooth surface that cooperate with each other. A compression spring is also crimped between the first clutch block and the second clutch block.

a guiding slider is disposed on an outer circumference of the first tooth surface of the first clutch block, and an arc limiting slot is disposed on an outer circumference of the second tooth surface of the second clutch block, and the guiding slider is inserted into the arc limiting slot, and Sliding in the range of the arc-shaped limiting groove; the outer surface of the first clutch block is provided with a nut placing groove corresponding to the nut, and the nut placing groove is provided with a cover body; the outer surface of the second clutch block is corresponding to the handle The first clutch and the second clutch are respectively provided with a first connector and a second connector, and the first clutch or the second clutch is provided with a sleeve.

With the above, this creation has the following benefits:

1. The first clutch block and the second clutch block of the movable joint are matched by the tooth surface, and the first clutch block and the second clutch block are bonded together by the interaction of the tie rod and the eccentric cam, and the occlusion effect is achieved. Ok, you can also achieve multi-angle adjustment.

2. The rotation mode of this movable joint is inconsistent with the existing hinge rotation mode, so that its applicable range is larger than the existing bicycle folding device. This movable joint can be applied to the folding multifunctional walker, the folding scooter, the folding type riding bicycle. , folding bicycles, folding strollers, folding luggage carts, folding carts, etc.

1‧‧‧Active joints

11‧‧‧ Cover

12‧‧‧ nuts

13‧‧‧First clutch block

131‧‧‧First tooth surface

132‧‧‧guide slider

133‧‧‧First connector

134‧‧‧ nut placement slot

14‧‧‧Compressed spring

15‧‧‧Second clutch

151‧‧‧second connector

152‧‧‧Handle slot

153‧‧‧second tooth surface

154‧‧‧Arc limit slot

16‧‧‧ transverse

17‧‧‧handle

171‧‧‧Eccentric cam

18‧‧‧ lever

2‧‧‧Active joints

21‧‧‧ casing

3‧‧‧Cushion

31‧‧‧Support tube

4‧‧‧ Rear wheel support arm

5‧‧‧ Rear wheel

6‧‧‧Main connecting rod

7‧‧‧ head assembly

71‧‧‧T-tube

73‧‧‧Front wheel support arm

74‧‧‧ handlebars

75‧‧‧Handle

8‧‧‧ front wheel

9‧‧‧Handle socket

10‧‧‧Multifunctional walker

20‧‧‧Folding scooter

30‧‧‧Folding carriage

40‧‧‧Stacked bicycle

50‧‧‧Folding stroller

60‧‧‧Folding luggage cart

70‧‧‧Folding trolley

Figure 1 is a schematic exploded view of the present embodiment.

FIG. 2 is a schematic view showing another angle structure of the present embodiment.

Figure 3 is a schematic structural view of another embodiment of the creation.

The fourth figure is a schematic diagram of the structure of the creative application in the multifunctional walker.

Fig. 5 is a schematic plan view showing the structure of the multifunctional walker in Fig. 4.

Figure 6 is a schematic diagram of the exploded structure of the multifunctional walker in Figure 4.

Figure 7 is a schematic view showing the structure of the folding state of the multifunctional walker in Fig. 4.

Figure 8 is a schematic view of the structure of the scooter applied to the creation.

Figure 9 is a schematic view of the structure of the horse riding vehicle.

Figure 10 is a schematic view of the structure of the bicycle applied to the creation.

Figure 11 is a schematic view of the structure of the creation of the stroller.

Figure 12 is a schematic diagram of the structure of the luggage cart used in the creation.

Figure 13 is a schematic view showing the structure of the creative application in the trolley.

For a more detailed understanding of the purpose, function, features and structure of the present invention, the preferred embodiment is described in conjunction with the drawings.

Referring to FIG. 1 and FIG. 2 , as shown in the figure, the movable joint for a folding frame provided by the present invention includes a first clutch block 13 , a second clutch block 15 , a tie rod 18 and a handle 17 . The pull rod 18 extends through the first clutch block 13 and the second clutch block 15. The first clutch block 13 and the second clutch block 15 are coupled by a tooth surface. One end of the pull rod 18 is connected with the nut 12, and the other end of the pull rod 18 is provided with a cross pin 16. An eccentric cam 171 is disposed at an end of the handle 17, and the eccentric cam 171 is coupled to the cross pin 16.

The opposing faces of the first clutch block 13 and the second clutch block 15 are respectively provided with a first tooth surface 131 and a second tooth surface 153 which are matched with each other, and the first clutch block 13 and the second clutch block 15 are also crimped. There is a compression spring 14.

A guiding slider 132 is disposed on an outer circumference of the first flank surface 131 of the first clutch block 13 , and a curved limiting slot 154 is disposed on an outer circumference of the second flank surface 153 of the second clutch block 15 , and the guiding slider 132 is inserted into the arc limit The slot 154 slides within the arcuate limit slot 154.

The outer surface of the first clutch block 13 is provided with a nut placement groove 134 corresponding to the nut 12, and a cover body 11 is disposed on the nut placement groove 134.

The outer surface of the second clutch block 15 is provided with a handle placement groove 152 corresponding to the handle 17.

A first connecting head 133 and a second connecting head 151 are respectively disposed on the first clutch block 13 and the second clutch block 15 .

The working principle of the movable joint 1 is that when the handle 17 is in the upturned state, the first clutch block 13 and the second clutch block 15 have a certain movable space in the direction of the pull rod 18, and the first clutch is operated by the compression spring 14. The block 13 and the second clutch block 15 are spring-folded, and the first tooth surface 131 and the second tooth surface 153 are no longer engaged. The first clutch block 13 and the second clutch block 15 can be rotated around the rod 18 when the switch is suitable. At the angle, the handle 17 is moved, the eccentric cam 171 of the handle 17 is eccentrically moved against the second clutch block 15, the pull rod 18 pulls the first clutch block 13, the compression spring 14 is compressed, the first clutch block 13 and the second clutch The blocks 15 are brought closer together so that the first flank 131 and the second flank 153 are engaged to achieve positioning.

Continuing to refer to FIG. 3, which is another embodiment of the movable joint 2, the activity is closed Section 2 differs from the movable joint 1 in that a sleeve 21 is provided on the first clutch block 13 or the second clutch block 15, and the sleeve 21 can be used for inserting and fixing the cannula, mainly for use in a multi-purpose walker, riding The seat cushion of the car and bicycle is intubated and framed.

Please refer to Figure 7 of Figure 4, as shown in Figure 6 of Figure 4, with more than one As an example of the functional walker 10, the multi-purpose walker 10 applies the above-described movable joint 1 and movable joint 2 so as to have a folding function. The specific implementation is as follows: the multifunctional walker 10 includes a frame, a front wheel 8, a rear wheel 5, and a seat cushion 3. The seat cushion 3 is disposed on the frame, and the frame includes a front assembly 7 and a main connecting rod. 6. The rear wheel support arm 4, the movable joint 1 and the movable joint 2, the front head member 7 and the front end of the main link 6 are connected by a movable joint 1, and the front head member 7 is provided with a front wheel support arm 73, and the front wheel support arm 73 is connected. On the side of the front wheel 8, the upper end of the rear wheel support arm 4 and the rear end of the main link 1 are connected by a movable joint 2, and the lower end of the rear wheel support arm 4 is connected to the side of the rear wheel 5, wherein the clutch face of the movable joint 1 is c The clutch faces b of the movable joint 2 are inclined with respect to the right and left bisector faces a of the main link, respectively. The front end of the main connecting rod 6 is connected to the second connecting head 151 of the movable joint 1, the rear end of the main connecting rod 6 is connected to the first connecting head of the movable joint 2, and the second connecting end of the movable joint 2 and the upper end of the rear wheel supporting arm 4 are connected. The sleeve 21 of the movable joint 2 is mated with the support tube 31 at the bottom of the seat cushion 3.

The head assembly 7 includes a T-shaped tube 71, a handlebar 74, and the front wheel support The arm 73 and the T-shaped tube 71 are disposed upside down and connected to the first connecting head 133 of the movable joint 1. The handlebar 74 is T-shaped, and the lower end of the handlebar 74 is inserted into the T-shaped tube 71 and is rotated and matched with the T-shaped tube 71. A handle 75 is disposed on the left and right sides of the handlebar 74. The front wheel support arm 73 is located at a lower portion of the T-shaped tube 71 and is coupled to the lower end of the handlebar 74.

The handlebars 74 are respectively connected to the two handles 75, and the handlebars 74 are provided with The hand socket 9 is provided with two card holders 91 on the handle socket 9 corresponding to the left and right handles 75.

The rear wheel support arm 4 and the front wheel support arm 73 are respectively located on the left and right sides of the left and right bisector faces a of the main link.

As shown in FIG. 7, the folding principle of the multifunctional walker 10 is: the handle joints 67 of the movable joint 1 and the movable joint 2 are respectively erected, so that the front head member 7 and the front wheel 8 can be rotated, and the rear wheel support arm 4 and rear. When the wheel 5 rotates, since the clutch surface c of the movable joint and the clutch surface b of the movable joint 2 are respectively inclined with respect to the right and left bisector planes a of the main link, the front wheel 8 and the rear wheel 5 are folded at a certain angle after folding, and are overlapped. together. In addition, the handles 75 on both ends of the handlebar 74 can be pulled out and then snap-fitted to the card holder 91 of the handle socket 9.

Referring to Fig. 8, the movable joint 1 can be applied to the folding scooter 20, and the movable joint 1 is shown by arrows A and B in Fig. 8.

Referring to Fig. 9, the movable joint 1 can be applied to the folding carriage 30, and the movable joint 1 is shown by the arrow C in Fig. 9.

Referring to Fig. 10, the movable joint 1 can be applied to the folding bicycle 40, and the movable joint 1 is shown at the D, E, and F arrows in Fig. 10.

Referring to Fig. 11, the movable joint 1 can be applied to the stroller 50, and the movable joint 1 is shown at the G, H, and I arrows in Fig. 11.

Referring to Fig. 12, the movable joint 1 can be applied to the folding luggage cart 60, and the movable joint 1 is shown at the J arrow and the K arrow in Fig. 12.

Referring to Fig. 13, the movable joint 1 can be applied to the folding cart 70, and the movable joint 1 is shown by the L arrow and the M arrow in Fig. 13.

1‧‧‧Active joints

11‧‧‧ Cover

12‧‧‧ nuts

13‧‧‧First clutch block

131‧‧‧First tooth surface

132‧‧‧guide slider

133‧‧‧First connector

134‧‧‧ nut placement slot

14‧‧‧Compressed spring

15‧‧‧Second clutch

151‧‧‧second connector

152‧‧‧Handle slot

16‧‧‧ transverse

17‧‧‧handle

171‧‧‧Eccentric cam

18‧‧‧ lever

Claims (7)

a movable joint for folding a frame, characterized in that the movable joint comprises a first clutch block, a second clutch block, a tie rod and a handle, the draw rod runs through the first clutch block and the second clutch block, the first clutch block and the second clutch block The blocks are coupled by a tooth surface, one end of the pull rod is connected with the nut, the other end of the pull rod is provided with a cross pin, and the end of the handle is provided with an eccentric cam, and the eccentric cam is connected with the horizontal pin. The movable joint for a folding frame according to claim 1, wherein the opposite surfaces of the first clutch block and the second clutch block are respectively provided with a first tooth surface and a second tooth surface. A compression spring is also crimped between a clutch block and the second clutch block. The movable joint for a folding frame according to the first aspect of the invention, wherein the first clutch surface of the first clutch block is provided with a guide slider, and the outer circumference of the second tooth surface of the second clutch block is provided with a curved limit. The slot and the guide slider are inserted into the arc limiting slot and slide in the range of the arc limiting slot. The movable joint for a folding frame according to the first aspect of the invention, wherein the outer surface of the first clutch block is provided with a nut placement groove corresponding to the nut, and the nut placement groove is provided with a cover body. The movable joint for a folding frame according to claim 1, wherein an outer surface of the second clutch is provided with a handle placement groove corresponding to the handle. The movable joint for a folding frame according to claim 1, wherein the first clutch and the second clutch are respectively provided with a first connector and a second connector. The movable joint for a folding frame according to claim 1, wherein the first clutch or the second clutch is provided with a sleeve.