WO2008104120A1

WO2008104120A1 - Self-locking foldable handlebars

Info

Publication number: WO2008104120A1
Application number: PCT/CN2008/000179
Authority: WO
Inventors: Geping Chen; Xinjun Liao; Ning Liu
Original assignee: Geping Chen; Xinjun Liao; Ning Liu
Priority date: 2007-02-27
Filing date: 2008-01-24
Publication date: 2008-09-04
Also published as: CN101020489A; CN100593494C

Abstract

Self-locking foldable handlebars include a left handlebar (1), a right handlebar (2) and a housing (3) connected with the tail ends of the left and right handlebars (1,2). The left and right handlebars (1,2) may symmetrically synchronously rotate between in a horizontal unfolded position and in a vertical folded position. When unfolded a semicircular hole and a semi-taper pin (4) of the tail ends of the left and right handlebars (1,2) form a concentric circular hole and a concentric taper pin in the transverse direction by engagement, a taper sleeve (6) is provided in the transverse direction to firmly engage with the concentric taper pin under elasticity, thereby perform the self-locking of the left and right handlebars (1,2). A control bar (7) is provided to separate the taper sleeve (6) from the taper pin, so the left and right handlebars (1,2) are in the vertical folded position by their weight.

Description

Self-locking folding handlebars

The invention relates to a handlebar, in particular to a self-locking folding handlebar. Background technique:

There are two types of handlebars for bicycles, tricycles, motorcycles, motorcycles, etc., for example, bicycles:

The left and right handlebars of the fixed handlebar are fixed laterally on the front arm, and the front arm is fixed on the nose shaft. The fixed handlebar is firmly combined without looseness. The disadvantage is that the bicycle occupies a large space when parked.

The folding handlebars used for folding bicycles mainly include the following

1. Plug-in folding handle: After the left and right handlebars are locked and closed in the front arm, you need to insert the plug provided on the side of the lock body to insert and fix the handle. The insertion pin used in the one-way insertion method is an equal-diameter cylinder, and the cylinder is in sliding engagement with the keyhole, and the gap of the sliding fit is increased with the use of the vehicle, so that the original technology of the handlebar sleeve is matched. The state changes, which in turn affects the stability of the bicycle when riding, and even creates safety problems.

2. Integral folding handlebars: When the handlebars of some folding bicycles are folded, the handles are folded back on the vehicle body as a whole. The folded handlebars also need to adjust the relative parallel angle between the handlebar structure and the frame. This kind of operation is troublesome. If the handle angle and pressure are not adjusted properly, during the riding process, the handlebar will loosen the lock body structure due to the vibration stress, causing a certain degree of safety hazard.

3. Threaded handlebar: The handlebar is connected with the front arm by threading. However, the separated handlebars are not easy to collect when they are not placed. In addition, the threaded handlebars are troublesome to install, and the movement is slow. The most deadly is the handlebar thread. The damage directly makes the handlebars unable to be installed and practical. Summary of the invention:

In view of the deficiencies of the above various types of handlebars, it is an object of the present invention to provide a self-locking folding handlebar that is securely fastened in use and quick and convenient to fold; another function of the present invention is

The self-locking folding handlebar capable of achieving the above purpose includes a left and a right handlebar and a front arm connected to the tail ends of the left and right handlebars, the difference being: the left and right handlebars are hinged on the front arm of the vehicle. The left and right handlebars are parallel to each other, and the left and right handlebars are rotatable in a longitudinal vertical plane to achieve horizontal closure and vertical folding, or to rotate in a horizontal horizontal plane to achieve horizontal closure and parallel folding. The left end of the left and right handlebars are provided with semi-circular holes and semi-conical pins which are formed by concentric circles and concentric taper pins when horizontally closed, and the closed circular holes are the axial holes of the conical pins, the axial line and the left, The rotation axis of the right handlebar is parallel; a guide rod is fixed on the inner end of the front arm, the circular hole and the conical pin shaft, and the guide rod is matched with the circular hole of the conical pin, and the guide rod is further provided with an elastic mechanism. Push and cone A pin-fitted taper sleeve; a clutch mechanism for disengaging the taper sleeve from the taper pin is also provided on the front arm.

In the above structure, the rotation direction of the left and right handlebars forms a 90 degree movement angle with the elastically moving taper sleeve, and the sleeve sleeve adopts a self-locking fastening manner to the closed cone pin under the action of the elastic force. The circular hole of the tapered pin and the approximately rigid contact of the guide rod ensure the overall rigidity and smooth safety of the folding handlebar during the riding state and the front arm. The taper sleeve loses control of the taper pin under the manipulation of the clutch mechanism, and the left and right handlebars rotate to form a folded state.

In order to realize the synchronous rotation of the left and right handlebars within 90 degrees of closing and folding, synchronous teeth are further provided at the tail ends of the left and right handlebars, and the synchronous teeth are preferably sector-shaped synchronous teeth, the axis center of the sector-shaped synchronous teeth and the left, The rotation axis of the right car coincides. As long as one of the handlebars is turned, the left and right handlebars can rotate synchronously and symmetrically. The elastic structure is a compression spring, and the compression spring is set on the guide rod and press-fitted on the rear end of the sleeve o

The clutch mechanism includes a joystick, and the lever portion of the joystick is hinged on the arm of the vehicle. One end of the joystick is connected with the taper sleeve. When the left and right handlebars are to be folded, the other end of the joystick is moved to force the taper sleeve to overcome The compression spring force moves to disengage the taper sleeve from the taper pin. If the left and right handlebars are vertically folded, the handlebar will automatically rotate from the horizontal closed state to the vertical folded state under the action of gravity; if the horizontal folding mode is adopted, only the left and right handlebars can be toggled. The two handlebars are folded back at the same time.

In order to automate the closing operation of the left and right handlebars, an outwardly flared oblique wing opposite to the taper of the taper sleeve may be provided at a side of the taper sleeve at a position corresponding to the closed semi-conical pin. When turning the left and right handlebars to the closed state, the semi-conical pins of the left and right handlebars press the oblique wing, and the taper sleeve moves to the outside of the semi-conical pin by the elastic force. After the left and right handlebars are closed, the taper sleeve is elastic. Under the action, it is interlocked with the conical pin to lock each other.

There is also an anti-theft lock and a built-in extension type wheel lock in the front arm. The square-shaped elastic locking tongue of the anti-theft lock is arranged in parallel with the guide rod and pressed on the left and right handlebars, and the keyhole is opened on the left and right handlebars. When closed, it corresponds to the elastic locking tongue. When it is closed, the elastic locking tongue automatically snaps into the locking hole, and the left and right handlebars are locked in the folded state. To restore the closing of the left and right handlebars, the key needs to be used to open the anti-theft. The lock releases the elastic locking tongue from the locking hole. Since the elastic locking tongue is close to the guiding rod, when the tool is extended into the front arm arm and the elastic locking tongue, it is easy to bend the guiding rod at the same time, even if the elastic locking tongue has been opened, due to the deformation of the guiding rod, the sleeve It will be stuck and cannot move. It can't lock the tapered pin of the left and right handlebars. In this case, the left and right handlebars can be closed but cannot be locked, and the vehicle cannot ride. The built-in tensile wheel lock is placed in the folded position of the vehicle. When the handlebar is in the folded state, the built-in tensile wheel lock can be pulled out in the tube of the left and right vehicles, and the vehicle is locked through the front wheel rim, making the vehicle impossible to implement. .

Taking the bicycle as an example, the main size data of each part of the self-locking folding handlebar of the present invention is: the left and right handlebars have a diameter of 22. 0~30. 0 between the thin tubes; the sector-shaped synchronous gears毫米之间之间。 The modulus is between 1. 0~2. 5; between the semi-conical pin and the taper sleeve is between 2 and 15 degrees; the diameter of the guide rod is between 3. 0~8. Omm; Between 0. 5~5. 0kg between the two. The flexible nylon wire rope, the jacket is made of 0. 8~2. 5 let nylon sleeve; in the flexible One end of the chain is riveted to the lock body, and the other end is riveted to a limit body, and the limit body and the tube form a closed telescopic limit structure to limit the flexible chain from being able to escape when the tube is stretched inside the tube.

Advantages of the invention:

1. The invention adopts the fastening method of the concentric taper pin formed by the elastic sliding cone sleeve and the left and right handlebars, and has the advantages of simple structure, reliable locking, easy operation, complete folding and small space position. .

2. The left and right handlebars of the present invention are driven by sector-shaped synchronous teeth, and have the characteristics of synchronous action, and only need to drive any one of the handlebars, and the left and right handlebars simultaneously synchronously rotate symmetrically.

3. The invention adopts a built-in anti-theft lock structure and has high anti-smashing performance; the built-in anti-theft lock can be automatically locked after the left and right handlebars are folded, and the locked left and right handlebars are vertical or horizontal. The state is unable to ride, even if the thief opens the anti-theft lock, but also bends the guide bar, the left and right handlebars can not be locked after being closed, the vehicle is still unable to ride; the built-in stretched wheel lock is after the vehicle is parked When the handlebar is in the folded state, the built-in tensile wheel lock can be pulled out in the left and right handlebar tubes, and the vehicle is locked through the front wheel rim, so that the vehicle cannot be pushed.

Therefore, the self-locking folding handlebar of the present invention has superior usability and anti-theft property as compared with the conventional bicycle.

BRIEF DESCRIPTION OF THE DRAWINGS.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the structure of an embodiment of the present invention.

Figure 2 is a perspective view showing the structure of the front arm of the embodiment of Figure 1.

Figure 3 is a perspective view showing the internal structure of the inner part of the front arm of Figure 2.

Figure 4 is a schematic view showing the closed state of the left and right handlebars in the embodiment of Figure 1;

Fig. 5 is a schematic view showing the folded state of the left and right handlebars in the embodiment of Fig. 1.

Fig. 6 is a schematic view showing the structure of the taper sleeve of Fig. 3 when it is separated from the concentric taper pin.

Fig. 7 is a schematic view showing the locking structure of the left and right handlebars in the folded state shown in Fig. 5.

Figure number identification: 1, left handlebar; 2, right handlebar; 3, · front arm; 4, semi-conical pin; 5, guide rod; 6, taper sleeve; 7, joystick; 8, sector synchronous gear; , compression spring; 10, oblique wing; 11, built-in anti-theft lock; 12, elastic lock tongue; 13, lock hole; 14 head shaft; 15, flexible chain. BEST MODE FOR CARRYING OUT THE INVENTION: - The main structure of the self-locking folding handlebar of the present invention includes left and right handlebars 1, 2 and a front arm 3, as shown in Fig. 2, the front arm 3 is composed of a longitudinal section and a lateral section. T" shape, the tails of the left and right handlebars 1, 2 are installed in the longitudinal section of the front arm 3, and the tail end sleeve of the lateral section of the front arm 3 is fixedly connected with the nose shaft 14, as shown in Fig. 1, left, The right handlebars 1, 2 are horizontally opened to be in a closed state of riding.

The longitudinal and lateral sections of the head arm 3 are hollow structures with a top cover, as shown in FIG. The left and right handlebars 1 and 2 are provided with the sector-shaped synchronizing teeth 8 of the left and right handlebars 1 and 2, and the center of the sector-shaped synchronizing teeth 8' is provided with a hinged hole, the left and right handlebars 1 The fan-shaped synchronizing teeth 8 of 2 are engaged with each other in the longitudinal section of the front arm 3, and after adjusting the symmetrical positions of the left and right handlebars 1, 2, the left and right handlebars 1, 2 are hinged by the pin through the hinge hole. Between the front and rear walls of the longitudinal section of the front arm 3, such as Figure 4 and Figure 5. After the hinged left and right handlebars 1, 2 rotate synchronously in the vertical vertical plane, the limit of rotation is between the horizontal state and the downward vertical state, and when it is horizontal, it is closed and riding, as shown in Fig. 1, Fig. 4 As shown, it is folded when it is vertical, as shown in Figure 5 and Figure 7.

The left and right handlebars 1 and 2 are closed at the butt joints symmetrically with a semi-conical pin 4 projecting laterally rearward and its concentric semicircular hole. The taper of the front and rear semi-conical pins 4 is reduced, when closed, left The semi-conical pins 4 on the right car 1, 2 are merged into concentric taper pins, and the semi-circular holes are merged into a concentric center circular hole, as shown in Fig. 4 and Fig. 5.

As shown in FIG. 3, FIG. 6, and FIG. 7, a guide rod 5 is disposed along the axial line of the tapered pin. The front end of the guide rod 5 is fixed to the front wall of the longitudinal section of the front arm 3. The rear end of the guide rod 5 is fixed at At the tail end of the lateral section of the front arm 3, the diameter of the front end of the guide rod 5 coincides with the central circular hole of the tapered pin. The taper sleeve 6 is fitted to the rear portion of the guide rod 5. The inner taper hole at the front end of the taper sleeve 6 is matched with the taper pin, and the left and right sides of the taper sleeve 6 are provided with oblique wings 10 which are horizontally rearward and outwardly opened, and a cone A compression spring 9 is press-fitted to the guide rod 5 between the rear end of the sleeve 6 and the tail portion of the lateral section of the front arm 3. The lever portion of the joystick 7 is hinged in the head arm 3 below the taper sleeve 6, one end of the lever 7 is hooked to the tail end of the taper sleeve 6, and the other end of the lever 7 is exposed to the head arm 3. When the left and right handlebars 1, 2 are in the folded state as shown in FIG. 5 and FIG. 7, under the action of the compression spring 9, the taper sleeve 6 is moved forward into the longitudinal section of the front arm 3, and the left and right handlebars are 1. 2 When the upturn returns to the closed state, the semi-conical pins 4 of the left and right handlebars 1, 2 press the inclined wing 10 of the taper sleeve 6 to move the taper sleeve 6 back to the outside of the semi-conical pin 4, and the semi-conical pin 4 merges into a concentric cone When the pin is turned, the inclined wing 10 of the taper sleeve 6 loses the external force, and the taper sleeve 6 is tightened by the compression spring 9 and the concentric taper pin. At this time, the central circular hole of the concentric taper pin is also tightly held with the guide rod 5, and the left and right vehicles are The 1 and 2 are firmly connected to the front arm 3 in a rigid manner.

To fold the left and right handlebars 1, 2, just pull the exposed end of the joystick 7 downwards, and the joystick 7 drives the taper sleeve 6 to move backwards, as shown in Fig. 6, when the taper sleeve 6 is completely concentric with the conical pin After disengagement, the left and right handlebars 1, 2 are automatically turned down to the vertical folding state due to gravity.

The built-in anti-theft lock 11 is longitudinally mounted on the front part of the transverse section of the front arm 3, below the taper sleeve 6, and the elastic locking tongue 12 which is adjacent to the guide rod 5 passes through the rear wall of the longitudinal section of the front arm 3 and is pressed against the left and right sides of the vehicle. On the rear side of the 1, 2, the left and right handlebars 1, 2 are provided with a locking hole 13 on the rear side. When the left and right handlebars 1, 2 are in the vertically folded state, the locking hole 13 corresponds to the position of the elastic locking tongue 12. The elastic locking tongue 12 extends into the locking hole 13 to lock the left and right handlebars 1, 2, and only the built-in anti-theft lock 11 is opened by the key, so that the elastic locking tongue 12 and the locking hole 13 are dislocated, and then the left is turned up. , the right handlebars 1, 2 return to the closed riding state. 5 。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。 Nylon sleeve; at one end of the flexible chain 15' is riveted to lock the lock body, and the other end is riveted to a limit body, and the limit body and the tube form a closed telescopic limit structure to limit the flexible chain 15 Can not be pulled out when stretching the tube. When the left and right handlebars 1, 2 are in the folded state, the flexible chain 15 is stretched out of the tube, and the flexible chain 15 surrounds the wheel, and the end lock bodies are interlocked with each other; when the flexible chain 15 is retracted to hide the tube When the tube end is elastically buckled, the flexible chain 15 is locked. The main dimensions of the self-locking folding handlebars for bicycles are now available: Left and right handlebars 1, 2 are thin tubes with a diameter between 22. 0~30. 0mm; Between the legs, the diameter of the guide rod 5 is between 3. 0~8. 0 between the legs 0之间之间。 The compression of the spring is between 1. 5~5. 0kg between.

Claims

1. Self-locking folding handlebar, including left and right handlebars and a front arm connected to the tail ends of the left and right handlebars, characterized in that: the tail ends of the left and right handlebars (1, 2) are hinged to the front end The arm (3), the left and right handlebars (1, 2) have parallel axes of rotation, and the left and right handlebars (1, 2) are respectively provided with semi-conical pins (4 weights) that form a conical pin when closed. The axis of the pin is parallel to the axis of rotation of the left and right handlebars (1, 2), and the semi-circular pin (4) is also provided with a semi-circular hole forming a coaxial circular hole when closed; the inside of the front arm (3), the circular hole and A guide rod (5) is arranged on the axial center of the tapered pin, the guide rod (5) is matched with the round hole, and the guide rod (5) is further provided with a taper sleeve which slides along the guide rod (5) and cooperates with the tapered pin (6>, the taper sleeve (6) is pressed in the direction of the taper pin by the elastic mechanism; the clutch arm (3) is also provided with a clutch mechanism for disengaging the taper sleeve (6) from the taper pin.

2. The self-locking folding handlebar according to claim 1, wherein: the tail ends of the left and right handlebars (1, 2) are respectively provided with meshing synchronizing teeth. Book

3. The self-locking folding handlebar according to claim 2, wherein the axes of the synchronizing teeth coincide with the axes of rotation of the left and right handlebars (1, 2), respectively.

A self-locking folding handlebar according to claim 2 or 3, characterized in that the synchronizing teeth are sector-shaped synchronizing teeth (8).

5. A self-locking folding handlebar according to any one of claims 1 to 3, wherein: the elastic mechanism is a compression spring (9), and the compression spring (9) fitted on the guide rod (5) is press-fitted. At the back end of the cone's sleeve (6).

6. The self-locking folding handlebar according to any one of claims 1 to 3, wherein the clutch mechanism comprises a joystick (7), and the lever of the joystick (7) is hinged to the front arm (3) , joystick

One end of (7) is connected to the taper sleeve (6).

7. The self-locking folding handlebar according to any one of claims 1 to 3, characterized in that: the outer side of the taper sleeve (6) corresponds to the azimuth of the closed semi-conical pin (4), and is provided with The taper sleeve has an outwardly flared oblique wing (10) with opposite taper directions. '

The self-locking folding handlebar according to any one of claims 1 to 3, characterized in that: the front arm (3) is further provided with a built-in anti-theft lock (11) and a square shape of the anti-theft lock (11). Elastic lock tongue

(12) Set in parallel with the guide rod (5) and press on the left and right handlebars (1, 2). The lock hole (13) opened on the left and right handlebars (1, 2) is closed and elastically locked. Corresponding to the tongue (12), the elastic locking tongue (12) is snapped into the locking hole (13). 9. The self-locking folding handlebar according to any one of claims 1 to 3, characterized in that: the handles of the left and right handlebars (1, 2)' respectively have a tensile wheel lock, and the built-in stretching The wheel lock is a flexible chain (15). One end of the flexible chain (15) is riveted to the lock body of the lock, and the other end is riveted with a limit body, and the limit body and the tube form a closed telescopic limit structure.

10. The self-locking folding handlebar according to claim 5, wherein: the left and right handlebars (1, 2) are thin tubes having a diameter between 22.0 and 30.0 mm; and the sector-shaped synchronous teeth (8) The gear modulus is between 1.0 and 2.5; the half taper pin (4) and the taper sleeve (6) have a mating taper between 2 and 15 degrees; the guide rod (5) has a diameter between 3.0 and 8.0 legs; (9) It is made of spring steel with a diameter between 1.5 and 2.5 mm. The spring pressure is between 1.5 and 5.0 kg.