CN107054536B

CN107054536B - Folding device

Info

Publication number: CN107054536B
Application number: CN201710175452.7A
Authority: CN
Inventors: 李金中; 韩德玮
Original assignee: Shenzhen Meidahang Technology Co ltd
Current assignee: Dahang Science And Technology Shenzhen Co ltd
Priority date: 2017-03-22
Filing date: 2017-03-22
Publication date: 2023-11-07
Anticipated expiration: 2037-03-22
Also published as: CN107054536A

Abstract

The invention discloses a folder structure for folding or disassembling a rigid object, wherein tooth rows matched with each other are arranged on opposite surfaces of two connecting plates, and tooth grooves meshed with each other are arranged on the opposite surfaces of convex teeth of the tooth rows; when the locking mechanism for locking the direction of the vertical tooth row is used, the locking mechanism can drive the two connecting blocks to move relatively along the direction of the pull rod, so that tooth grooves on the tooth row are tightly meshed, and the press fastening connection of the two connecting plates is realized. When the folder is connected, the matching surfaces of the two connecting plates are bitten by the opposite tooth sockets, so that the two connected parts are spliced to form a complete rigid combined main body, and the front and rear components can be firmly connected. The structure is simple, and the connection strength is high.

Description

Folding device

Technical Field

The invention relates to a folder structure for folding rigid objects.

Background

Many products employ or desire a collapsible or removable structure to enhance portability. Today, folding bicycles have taken up about 10% of all bicycle sales and are also growing at high speed. In most foldable products, the original continuous tube is folded by a folder, one side of the two opposite plates is hinged, the other side is locked together by a locking mechanism, and the switching between the unfolded and folded states is achieved by opening and locking the locking mechanism. Figure 13 illustrates a four bar linkage configuration that is the oldest and most commonly used, and similar methods are used in other foldable products, including but not limited to electric bicycles, tricycles, scooters, camping gears, and military hardware.

This approach has long been common but the effect is often less than ideal because the overall strength of its folded joint is dependent only on the hinge and latch, and there is a strong stress concentration of the joint during use, resulting in a product with a safety hazard at the joint. In fact, most foldable bicycles on the market today do not pass the safety standard tests required for bicycles, which creates many product liabilities and public safety issues. In order to improve the stress state of the folding structure, it is necessary to provide a folder which adopts completely different technical design principles, ensures perfect combination between the front and rear parts of the foldable member, and is strong and durable.

Disclosure of Invention

The invention aims to provide a folder with simple structure and higher strength.

The invention relates to a folder, which comprises two opposite connecting plates, wherein more than one group of convex teeth are arranged on opposite surfaces of the two connecting plates to form two matched tooth rows, and the two tooth rows are provided with a first tooth socket and a second tooth socket which are mutually meshed on the matched surfaces; a pull rod which simultaneously penetrates through the tooth rows of the two connecting plates is arranged in the direction perpendicular to the tooth rows, and a locking mechanism is arranged at the end part of the pull rod; when the two connecting plates are folded, the locking mechanism is used for locking, so that the first tooth socket and the second tooth socket on the two tooth rows are tightly meshed, and the two connecting plates are pressed and fastened into a whole.

According to the folder disclosed by the invention, the two connecting plates are mutually matched through the tooth row, the matching surface is provided with the mutually meshed first tooth groove and second tooth groove, and the two connecting blocks are pulled to relatively move through the pull rod, so that the first tooth groove and the second tooth groove which are opposite to each other on the matching surface are tightly meshed, and the connection of the two connecting plates is realized. After the folding device is connected, the front part and the rear part of the connection are spliced through two-dimensional occlusion formed by the first tooth socket and the second tooth socket of the tooth row matching surface, so that a complete rigid combined main body is formed, and the front part and the rear part components can be very firmly connected. The hinge and the latch in the prior art are replaced, and the defect of insufficient connection strength of the existing structure can be thoroughly overcome. The folder has a simple structure and high connection strength; the connecting part is smooth, no obvious protrusion exists, the tubular shape of the connecting part can be maintained when the tubular parts are connected, and the connecting part is attractive and has no foreign body sensation.

The locking mechanism may include a positioning nut at one end of the pull rod and an eccentric locking handle mechanism at the other end of the pull rod. It is prior art, wide application in bicycle folding joint field.

One side of the two connecting plates can be provided with a hinge, and an openable structure is formed by hinging the hinge. At this time, the hinge thereof serves only as a connector when the member is folded, and the connection strength is not determined any more. Thus, relatively light hinge members may be selected for cost and weight savings without compromising the strength and rigidity of the connection.

The hinge shaft of the hinge can be parallel to the pull rod or perpendicular to the pull rod.

The two connecting plates can be freely separated when the two connecting plates are opened.

The pull rod is directly arranged on one connecting plate, is perpendicular to the direction of the tooth row and penetrates through the tooth row, a U-shaped groove is formed in the position, corresponding to the pull rod, of the other connecting plate, and when the connecting plates are covered, the pull rod is just positioned in the U-shaped groove to form a structure which penetrates through the two connecting plates simultaneously.

The folder can be provided with a locking pressure spring sleeved outside the pull rod between adjacent convex teeth of the tooth row or between the convex teeth and the edge of the connecting plate. When the locking mechanism is released, the two connecting plates can generate opposite force when being closed under the action of the elastic force of the locking pressure spring, so that the tooth row and the first tooth socket and the second tooth socket which are mutually bitten are pushed to be separated.

The hinge shafts of the two connecting plates can also be sleeved with a tooth row pressure spring pressed between the two tooth rows. It can also provide opposite directional forces for closing the two connecting plates when releasing the locking mechanism, pushing the rows of teeth and the first and second mutually biting sockets to disengage from each other.

In order to allow relative movement when the two connecting plates are separated, the hinge shaft hole of one connecting plate is preferably oval so as to provide a movable space when the two connecting plates are separated.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is a schematic perspective view of the present invention;

FIG. 4 is a schematic perspective view of the present invention;

FIG. 5 is a schematic perspective view of the present invention;

FIG. 6 is a schematic perspective view of one connecting plate of the present invention;

FIG. 7 is a schematic perspective view of another connecting panel of the present invention mated with the connecting panel of FIG. 6;

FIG. 8 is a schematic perspective view of the present invention;

FIG. 9 is a schematic perspective view of the present invention;

FIG. 10 is a schematic perspective view of a connector block of the present invention;

FIG. 11 is a perspective view of another connecting panel mated with the connecting panel of FIG. 10 in accordance with the present invention;

FIG. 12 is a schematic perspective view of the present invention;

FIG. 13 is a schematic perspective view of the prior art;

front tube 1, rear tube 2, cam handle 3, pull rod 4, locking pressure spring 5, axle pin 6, front joint 7, rear joint 8, pivot 9, pivot 10, lower riser 11, tooth row pressure spring 12, nut 13, riser 14, first tooth socket 15, second tooth socket 16, oblique female 17, U-shaped ejector 18, roof 19, screw 20, pipe 21, cushion 22, dogtooth 23.

Description of the embodiments

The folder structure can be applied to a folding bicycle frame, as shown in fig. 1 and 2, one of the connecting plates is connected with a front pipe 1, the other connecting plate is connected with a rear pipe 2, the connecting plate connected with the front pipe is called a front joint 7, the connecting plate connected with the rear pipe is called a rear joint 8, one sides of the front joint and the rear joint are hinged through a rotating shaft 9, a plurality of groups of convex teeth 23 are arranged on opposite surfaces of the two joints to form tooth rows, the tooth rows of the two joints are mutually matched, and a first tooth slot 15 and a second tooth slot 16 which are mutually meshed are arranged on opposite surfaces of the tooth rows; the front joint is provided with a pull rod 4 which is perpendicular to the direction of the tooth row and penetrates through the tooth row of the front joint, and a U-shaped groove is arranged at the position, corresponding to the pull rod, of the rear joint, as shown in fig. 10; the end part of the pull rod is provided with a locking mechanism; the locking mechanism, as shown in figure 4, comprises a positioning nut 13 and an eccentric locking handle mechanism which are respectively arranged at two ends of the pull rod; the bottom end of the pull rod is positioned below the front joint through a positioning nut 13, and the other end of the pull rod is provided with an eccentric locking handle mechanism which comprises a cam handle 3 hinged to the end part of the pull rod through a hinge shaft 6, a cushion block 22 below the cam handle 3 and a locking pressure spring 5 sleeved outside the pull rod and positioned between two convex teeth of a tooth row or between one convex tooth and the edge of the joint; when the two connecting plates are folded, the larger radius part of the cam handle is downward by rotating the cam handle, the compression spring is compressed and locked, and the front connector and the rear connector are driven to move relatively along the direction of the pull rod, so that the first tooth socket 15 and the second tooth socket 16 on the planes opposite to the tooth row are mutually bitten, and the stable connection of the two connectors is realized. When the cam handle is operated to unlock, the locking pressure spring can push the tooth row, the first tooth socket and the second tooth socket which are mutually bitten, and the tooth row, the first tooth socket and the second tooth socket are separated.

A gear-row compression spring 12 pressed between two gear rows can be sleeved outside the hinge shaft of the two connecting plates, and the gear-row compression spring can provide the disengaging power, as shown in fig. 3.

The locking mechanism can also have nut structures at two ends, the bottom end of the pull rod is positioned below the front joint through the nut, the top end of the pull rod can be a locking nut screwed on the pull rod, and the two joints are driven to move relatively along the direction of the pull rod through rotating the locking nut, so that the first tooth socket and the second tooth socket are meshed, and the stable connection of the two joints is realized.

The folder structure can also be applied to folding of a plurality of pipes on a folding bicycle, as shown in fig. 8, and is simultaneously applied to upper and lower beam pipes of the folding bicycle, and simultaneously folding of the two beam pipes is realized.

The cam handle 3 may be mounted to the top or bottom of the folder tab.

For foldable bicycles, usually, a handlebar is welded to a foldable base, one connecting plate in the folder is used as the handlebar base, and the other connecting plate is connected with a bicycle steering fork, so that the foldable bicycle can be applied to the handlebar.

If the bicycle is provided with an upper pipe and a lower pipe, the two pipes are all required to be folded around the same shaft. The two folders can be respectively arranged and respectively folded. It is also possible to make the upper and lower folders correspond, with a U-shaped cross section between the two folders to form a continuous channel in the two plates. A single screw or snap cam handle 3 may be used to connect the fittings. Wherein a cam acts on the U-shaped bar and the screw secures the portion between the joints, as shown in fig. 8.

In some cases, the two connecting panels need to be separated rather than folded for better storage or transport, and the two connecting panels may be provided without a hinge. As shown in fig. 9. When the folding is needed, one side of the two connecting plates is hinged, so that the requirements can be met, as shown in figures 1, 2, 3 and 4. The hinge axis of the hinge may be parallel to the tie rod as shown in fig. 1 or perpendicular to the tie rod as shown in fig. 3.

The folder structure of the invention can also be applied to the fields such as temporary observation cameras, and can be arranged at the top end of a telescopic rod at the top of a reconnaissance or exploration vehicle by using the folder structure. Typically, one of its connecting panels will be mounted tightly to the vehicle, while the other will be mounted to the bottom of the telescoping pole. If the vehicle surface material is steel, the plate may be permanently attached to a snap-action magnetic mount, as shown in FIG. 12.

Claims

1. A folder, characterized in that: the tooth row is formed by arranging more than one group of convex teeth on opposite surfaces of the two connecting plates, and the two tooth rows are provided with a first tooth groove (15) and a second tooth groove (16) which are meshed with each other on the matched surfaces; a pull rod (4) which simultaneously penetrates through the tooth rows of the two connecting plates is arranged in the direction vertical to the tooth rows, and a locking mechanism is arranged at the end part of the pull rod; when the two connecting plates are folded, the locking mechanism is used for locking, so that the first tooth socket and the second tooth socket on the two tooth rows are tightly meshed, and the two connecting plates are pressed and fastened into a whole.

2. The folder as recited in claim 1, wherein: the locking mechanism comprises a positioning nut at one end of the pull rod and an eccentric locking handle mechanism at the other end of the pull rod.

3. The folder as recited in claim 1, wherein: the pull rod is installed on one connecting plate, is perpendicular to the direction of the tooth row and penetrates through the tooth row, and a U-shaped groove is formed in the position, corresponding to the pull rod, of the other connecting plate.

4. The folder as recited in claim 1, wherein: the hinge shaft of the two connecting plates is hinged with the vertical tooth row.

5. The folder as recited in claim 1, wherein: the hinge shafts of the two connecting plates are hinged with each other to form parallel tooth rows.

6. The folder as recited in claim 1, wherein: the locking compression spring sleeved outside the pull rod is arranged between adjacent convex teeth of the tooth row provided with the pull rod or between the convex teeth and the edge of the connecting plate.

7. The folder as recited in claim 5, wherein: the hinge shafts of the two connecting plates are sleeved with tooth row compression springs which are pressed between the two tooth rows.

8. The folder as recited in claim 5, wherein: the hinge hole of one connecting plate is elliptical.