WO2022226712A1 - 折叠接头 - Google Patents

折叠接头 Download PDF

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Publication number
WO2022226712A1
WO2022226712A1 PCT/CN2021/089765 CN2021089765W WO2022226712A1 WO 2022226712 A1 WO2022226712 A1 WO 2022226712A1 CN 2021089765 W CN2021089765 W CN 2021089765W WO 2022226712 A1 WO2022226712 A1 WO 2022226712A1
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WO
WIPO (PCT)
Prior art keywords
joint
hole
ball head
connecting rod
locking
Prior art date
Application number
PCT/CN2021/089765
Other languages
English (en)
French (fr)
Inventor
王峰
Original Assignee
王峰
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 王峰 filed Critical 王峰
Priority to CN202180095859.3A priority Critical patent/CN117320954A/zh
Priority to PCT/CN2021/089765 priority patent/WO2022226712A1/zh
Publication of WO2022226712A1 publication Critical patent/WO2022226712A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K15/00—Collapsible or foldable cycles

Definitions

  • the present invention relates to a mechanical connecting structure, in particular to a folding joint used for folding bicycles and folding electric vehicles.
  • the folding bicycle is light and small when folded. It can be carried when getting on and off the elevator, taking the bus, and taking the subway. It can be unfolded and used on the road. It is convenient to travel. The joy of riding in nature.
  • the folding joint is an important part on the folding bicycle.
  • the folding joint realizes the rapid folding or unfolding of the bicycle, reduces the volume of the folding bicycle, and facilitates the storage or transportation of the bicycle.
  • Chinese patent document CN2619081Y discloses a folding joint with four-bar linkage structure, two connecting plates are hinged on one side, the other side of each connecting plate is provided with a concave platform, and the ends of the adjusting rod and the handle are respectively inserted into the concave platform of one connecting plate, A hinge shaft runs through the adjusting rod or handle and is inserted into the connecting plates on both sides of the concave table, and the handle is rotated to tighten or loosen the two connecting plates through the adjusting rod.
  • Chinese patent document CN1406808A discloses an inner-locking foldable joint.
  • the mating surfaces of the two connecting plates each have a concave platform.
  • a corresponding edge is provided with a slot, and a movable and V-shaped clamping block on one side is placed in the concave platform of one of the connecting plates.
  • Existing folding joints generally include ejector-type folding joints, four-link folding joints, inner-locking folding joints and external-locking folding joints.
  • Chinese patent document CN2619081Y discloses a folding joint with four-link structure and CN1406808A.
  • An inner-locking folding joint is disclosed. If a user accidentally drives a handle to rotate from a locked position to a certain angle, the folding joint will be loosened, which is a potential safety hazard and does not meet the safety standards of some countries or regions.
  • the purpose of the present invention is to provide a folding joint with high safety and reliability.
  • a folding joint includes a first joint, a second joint, a quick release handle, a locking mechanism and a reset elastic member, one side of the second joint, one side of the first joint and the quick release handle are hingedly connected, and the
  • the first folding joint is provided with a guide member
  • the guide member is provided with a guide hole
  • the locking mechanism passes through the guide hole of the guide member
  • the reset elastic member is sleeved on the locking mechanism, one end of which abuts against On the guide piece, the other end abuts on the locking mechanism, the locking mechanism is driven to lock the first joint and the second joint
  • the quick release handle is used for driving the locking mechanism.
  • the locking mechanism is a ball head rod, one end of the ball head rod is hingedly connected with the quick release handle, the other end is provided with a ball head, the reset elastic member is sleeved on the ball head rod, the The other end of the reset elastic piece is pressed against the ball head, the inner edge of the other side of the second joint is provided with a locking part, and the locking part is provided with a ball head concave, when the ball head on the ball head ejector rod The first joint and the second joint are locked by the part abutting against the ball socket concave.
  • the ball head rod includes a connecting rod and a ball head rod.
  • One end of the connecting rod is provided with a circular hole, and the other end is threadedly connected with one end of the ball head rod. another side.
  • the locking mechanism includes a locking block and a connecting rod, one end of the connecting rod is hingedly connected with the quick release handle, and the other end is fixedly connected with the locking block, and the reset elastic member is sleeved on the connecting rod , the reset elastic member drives the locking block to be connected with the second joint in a snap connection.
  • the outer edge of the other side of the second joint is provided with a second groove
  • the locking block is provided with a second convex portion
  • the second groove is matched with the second convex portion
  • the The locking block is arranged on the outer side of the first joint and the second joint, and the other end of the reset elastic piece is pressed against the one end of the connecting rod hinged with the quick release handle.
  • the outer edge of the other side of the first joint is provided with a first snap groove
  • the locking block is further provided with a first convex portion
  • the first convex portion is matched with the first snap groove
  • the inner edge of the other side of the second joint is provided with a fourth groove
  • the locking block is provided with a second protrusion
  • the fourth groove is matched with the second protrusion
  • the locking block is arranged between the first joint and the second joint, and the other end of the reset elastic piece is pressed against the locking block.
  • the inner edge of the other side of the first joint is provided with a third snap groove
  • the locking block is provided with a first convex portion
  • the first convex portion is matched with the third snap groove.
  • the outer side of the second convex portion of the locking block is an arc surface.
  • a self-locking mechanism is provided on the quick release handle.
  • the connecting rod includes a connecting rod and an adjusting rod, one end of the adjusting rod is threadedly connected with the connecting rod, the other end is threadedly connected with the locking block, and one end of the connecting rod is provided with a circular hole.
  • one end of the quick release handle is provided with a cam
  • the cam is matched with the circular hole
  • the cam is provided with an eccentric hinge hole
  • the cam is connected to the first joint through a hinge shaft passing through the eccentric hinge hole .
  • the quick release handle is provided with a cam
  • the cam is provided with a slot, an eccentric hinge hole and a positioning hole, and the eccentric hinge hole and the positioning hole pass through the slot
  • the disc is provided with an eccentric hole and a pin hole
  • the disc is arranged in the slot of the cam, and is placed in the circular hole of the connecting rod, and one end of the cam and the connecting rod is hinged through the eccentric on the cam
  • the hinge shaft of the hole and the eccentric hole on the disc and the locating pin passing through the locating hole on the cam and the pin hole on the disc are connected to the first joint.
  • the beneficial effect of the folding joint disclosed in the present invention is that after the first joint and the second joint are closed, the locking mechanism locks the first joint and the second joint under the action of the elastic force of the reset elastic member, so as to realize the first joint and the second joint.
  • the effect of automatic locking of the second joint even if the quick release handle is inadvertently loosened, the first joint and the second joint can be locked under the action of the reset elastic member, and the safety and reliability are high.
  • FIG. 1 is a schematic structural diagram of a folded joint according to an embodiment of the present invention.
  • Fig. 2 is the joint schematic diagram of the folding joint according to the embodiment of the present invention.
  • FIG. 3 is an exploded schematic diagram of a folding joint according to an embodiment of the present invention.
  • Fig. 4 is the structural representation of the second embodiment of the present invention folded joint
  • Fig. 5 is the exploded schematic diagram of the second embodiment of the present invention folded joint
  • Fig. 6 is the joint schematic diagram of the three-fold joint according to the embodiment of the present invention.
  • FIG. 7 is an exploded schematic diagram of a three-folded joint according to an embodiment of the present invention.
  • a folding joint includes a first joint 10 , a second joint 20 , a locking mechanism 30 , a quick release handle 40 , a reset elastic member 50 and a self-locking mechanism.
  • first joint 10 One side of the first joint 10 is provided with a first hinge ear 11 , the first hinge ear 11 is provided with a first hinge hole 12 , and the outer edge of the other side of the first joint 10 is provided with a first slot 13 , the end surface of the first joint 10 is provided with a guide member 14, and the guide member 14 is provided with a guide hole.
  • One side of the second joint 20 is provided with a second hinge ear 21 , the second hinge ear 21 is provided with a second hinge hole 22 , and the outer edge of the other side of the second joint 20 is provided with a second clip slot, not shown.
  • the locking mechanism 30 includes a locking block 33, a connecting rod 32 and an adjusting rod 31.
  • One end of the connecting rod 32 is a big end, the big end is provided with a circular hole 321, and the outer edge of the big end is provided with a protrusion 322 , and the other end is provided with a threaded connection hole, which is not shown in the figure.
  • the locking block 33 is provided with a threaded hole 333, and two sides of the threaded hole 333 are provided with a first convex portion 331 and a second convex portion 332.
  • the outer side of the second convex portion 332 is an arc surface, please refer to 3 , the first protruding portion 331 is engaged with the first slot 13 on the first connector 10 , and the second protruding portion 332 is engaged with the second slot on the second connector 20 .
  • One end of the adjusting rod 31 is threadedly connected with the threaded connection hole on the connecting rod 32 , and the other end is threadedly connected with the threaded hole 333 on the locking block 33 .
  • the locking block 30 is arranged on the outer side of the first joint 10 and the second joint 20 .
  • the circular hole 321 at the big end of the connecting rod 32 is provided with a disc 75
  • the circular disc 75 is provided with an eccentric hole 751 and a pin hole 752 .
  • One end of the quick release handle 40 is provided with a cam, the cam is provided with a slot 43, an eccentric hinge hole 41 and a positioning hole 42, the eccentric hinge hole 41 and the positioning hole 42 pass through the slot 43, the quick release
  • the other end of the dismantling handle 40 is a handle.
  • the middle of the quick dismantling handle 40 is provided with a sinker groove 44 and a limit screw hole 45.
  • the sinker groove 44 passes through the slot 43, and the limit screw hole 45 passes through the sinker.
  • the disc 75 is set in the slot 43 of the cam, and the first joint 10 and the second joint 20 pass through the first hinge hole 12 on the first joint 10 and the second hinge hole on the second joint 20 22.
  • the eccentric hinge hole 41 on the quick release handle 40 and the hinge shaft 71 of the eccentric hole 751 on the disc 75 are hingedly connected.
  • the two ends of the hinge shaft 71 are provided with screw holes, and the screw holes are provided with screws 74.
  • a washer 73 is provided between the screw 74 and the hinge shaft 71 to prevent the hinge shaft 71 from coming out of the first hinge hole 12 and the second hinge hole 22.
  • the disc 75 passes through the positioning hole 42 on the cam and The pin shaft 72 of the pin hole 752 on the disc 75 rotates synchronously with the cam of the quick release handle 40 .
  • the self-locking mechanism includes a self-locking bolt 61, a limit screw 63 and a return elastic member 62.
  • the self-locking bolt 61 is provided with a narrow and long limit slot, and the self-locking bolt 61 is arranged in the sink groove 44.
  • the limit screw 63 is arranged in the limit threaded hole 45 to prevent the self-locking bolt 61 from coming out of the sink 44.
  • One end of the return elastic member 62 is against the limit screw 63, and the other end is against the self-locking bolt
  • the edge of the upper limit groove 61 makes the self-locking bolt 61 tend to protrude from the sink groove 44 .
  • the connecting rod 32 and the adjusting rod 31 drive the locking block 33 to move under the action of the elastic force of the reset elastic member 50, and pass the first convex part 331 of the locking block 33 and the second
  • the protrusions 332 are respectively engaged with the first slot 13 on the first connector 10 and the second slot on the second connector 20 to lock the first connector 10 and the second connector 20 , so as to realize the first connector 10 and the second connector 20 .
  • the outer side of the portion 332 is an arc surface.
  • the second joint 20 overcomes the elastic force of the reset elastic member 50 and pushes the locking block 33 to move outward. After the locking block 33 avoids the second joint 20, under the action of the reset elastic member 50, the second convex The part 332 is snap-connected with the second slot of the second connector 20 to realize the locking of the first connector 10 and the second connector 20 . Rotating the quick release handle 40 drives the disc 75 to rotate synchronously.
  • the quick release handle 40 rotates around the hinge shaft 71 passing through the eccentric hinge hole 41 on the cam, the connecting rod 32 and the adjusting rod 31 are driven to move, and the locking block 33 and the first A connector 10 and a second connector 20 are snap-connected or disconnected, so that the first connector 10 and the second connector 20 are locked or released, and the quick release handle 40 rotates past the dead center, so that the first connector 10 and the second connector 20 When it is locked, it plays a role of ensuring locking.
  • the self-locking bolt 61 moves in the direction of leaving the sinking groove 44 under the action of the return elastic member 62.
  • the block 33 is disengaged from the first slot 13 on the first connector 10 and the second slot on the second connector 20, thereby opening the first connector 10 and the second connector 20, improving the reliability and safety of the folding connector.
  • a folding joint includes a first joint 10, a second joint 20, a locking mechanism, a quick release handle 40, a reset elastic member 50 and a self-locking mechanism.
  • first joint 10 One side of the first joint 10 is provided with a first hinge ear 11 , the first hinge ear 11 is provided with a first hinge hole 12 , the other side of the first joint 10 is provided with a through hole 15 , and the first hinge ear 11 is provided with a first hinge hole 12 .
  • a guide member 14 is provided on an end surface of a joint 10 , and a guide hole is provided on the guide member 14 .
  • One side of the second joint 20 is provided with a second hinge ear 21, the second hinge ear 21 is provided with a second hinge hole 22, and the inner edge of the other side of the second joint 20 is provided with an outward extension.
  • the locking portion 23 is provided with a ball-head concave 24 on the locking portion 23 .
  • the locking mechanism is a ball head rod.
  • the ball head rod includes a connecting rod 32 and a ball head rod 34.
  • One end of the connecting rod 32 is a large head end.
  • the large head end is provided with a circular hole 321.
  • a protrusion 322 is provided, and the other end is provided with a threaded connection hole.
  • One end of the ball head rod 34 is provided with an external thread, and the other end is provided with a ball head.
  • the ball head is matched with the ball head concave 24 on the second joint 20 , and one end of the ball head rod 34 is connected to the connecting rod 32 through the external thread. threaded connection holes on the threaded connection. Since the other side of the first joint 10 is provided with the through hole 15 , it is convenient for the ball head to be inserted into the guide hole of the guide member 14 .
  • One end of the quick release handle 40 is provided with a cam, the cam is provided with an eccentric hinge hole 41, the other end of the quick release handle 40 is a handle, and the middle of the quick release handle 40 is provided with a sink groove 44 and a limiter.
  • the first joint 10 and the second joint 20 are hinged through the first hinge hole 12 on the first joint 10 , the second hinge hole 22 on the second joint 20 , and the eccentric hinge hole 41 on the quick release handle 40 .
  • the shaft 71 is hingedly connected, the two ends of the hinge shaft 71 are provided with screw holes, the screw holes are provided with screws 74, and the spacers 73 are provided between the screws 74 and the hinge shaft 71 to prevent the hinge shaft 71 from passing from the first The hinge hole 12 and the second hinge hole 22 come out.
  • the self-locking mechanism includes a self-locking bolt 61, a limit screw 63 and a return elastic member 62.
  • the self-locking bolt 61 is provided with a narrow and long limit slot, and the self-locking bolt 61 is arranged in the sink groove 44.
  • the limit screw 63 is arranged in the limit threaded hole 45 to prevent the self-locking bolt 61 from coming out of the sink 44.
  • One end of the return elastic member 62 is against the limit screw 63, and the other end is against the self-locking bolt
  • the edge of the upper limit groove 61 makes the self-locking bolt 61 tend to protrude from the sink groove 44 .
  • the connecting rod 32 and the ball end rod 34 move under the action of the elastic force of the reset elastic member 50.
  • the ball head on the ball head rod 34 is inserted into the ball head concave 24 on the second joint 20, and the first joint 10 and the second joint 10 are connected to the second joint 20 due to the rotation restriction of the connecting rod 32 and the ball head rod 34 by the guide member 14.
  • the joint 20 is locked to achieve the effect of automatic locking of the first joint 10 and the second joint 20. Even if the quick release handle 40 is loosened, under the action of the reset elastic member 50, the connecting rod 32 and the ball rod 34 extend outwards.
  • the second joint 20 is closed to the first joint 10.
  • the locking portion 23 pushes the ball head to drive the ball head lever 34 to overcome the elastic force of the reset elastic member 50.
  • the ball head lever When the ball head lever When the ball head on 34 slides into the ball head concave 24 on the second joint 20 , the locking of the first joint 10 and the second joint 20 is realized.
  • the self-locking bolt 61 moves in the direction of leaving the sink 44 under the action of the return elastic member 62 , and the outer edge of the self-locking bolt 61 hangs with the protrusion 322 on the connecting rod 32 to restrict the quick release handle 40 Rotate to achieve the effect of self-locking, press and hold the self-locking bolt 61, so that the outer edge of the self-locking bolt 61 is separated from the protrusion 322 on the connecting rod 32, rotate the quick release handle 40, and drive the ball end rod 34 and the first joint 10 and 10
  • the second joint 20 is disengaged, thereby opening the first joint 10 and the second joint 20, thereby improving the reliability and safety of the folding joint.
  • a folding joint includes a first joint 10, a second joint 20, a locking mechanism, a quick release handle 40, a reset elastic member 50 and a self-locking mechanism.
  • first joint 10 One side of the first joint 10 is provided with a first hinge ear 11 , the first hinge ear 11 is provided with a first hinge hole 12 , and the inner edge of the other side of the first joint 10 is provided with a third slot 16 , the end surface of the first joint 10 is provided with a guide member 14, and the guide member 14 is provided with a guide hole.
  • One side of the second joint 20 is provided with a second hinge ear 21 , the second hinge ear 21 is provided with a second hinge hole 22 , and the inner edge of the other side of the second joint 20 is provided with a fourth card slot, not shown.
  • the locking mechanism 30 includes a locking block 33, a connecting rod 32 and an adjusting rod 31.
  • One end of the connecting rod 32 is a big end, the big end is provided with a circular hole 321, and the outer edge of the big end is provided with a protrusion 322 , and the other end is provided with a threaded connection hole, which is not shown in the figure.
  • the locking block 33 is provided with a threaded hole 333 , and both sides of the threaded hole 333 are provided with a first convex portion 331 and a second convex portion 332 .
  • the three card grooves 16 are matched, the second protrusion 332 is matched with the fourth card groove on the second connector 20 , and the outer side of the second protrusion 332 is a smooth arc surface, which facilitates the direction of the second connector 20 to the first connector.
  • 10 Push the locking block 33 to move when it rotates.
  • One end of the adjusting rod 31 is threadedly connected with the threaded connection hole on the connecting rod 32 , and the other end is threadedly connected with the threaded hole 333 on the locking block 33 .
  • the locking block 30 is arranged between the first joint 10 and the second joint 20 .
  • the circular hole 321 at the big end of the connecting rod 32 is provided with a disc 75
  • the circular disc 75 is provided with an eccentric hole 751 and a pin hole 752 .
  • One end of the quick release handle 40 is provided with a cam, the cam is provided with a slot 43, an eccentric hinge hole 41 and a positioning hole 42, the eccentric hinge hole 41 and the positioning hole 42 pass through the slot 43, the quick release
  • the other end of the dismantling handle 40 is a handle.
  • the middle of the quick dismantling handle 40 is provided with a sinker groove 44 and a limit screw hole 45.
  • the sinker groove 44 passes through the slot 43, and the limit screw hole 45 passes through the sinker.
  • the disc 75 is set in the slot 43 of the cam, and the first joint 10 and the second joint 20 pass through the first hinge hole 12 on the first joint 10 and the second hinge hole on the second joint 20 22.
  • the eccentric hinge hole 41 on the quick release handle 40 and the hinge shaft 71 of the eccentric hole 751 on the disc 75 are hingedly connected.
  • the two ends of the hinge shaft 71 are provided with screw holes, and the screw holes are provided with screws 74.
  • a washer 73 is provided between the screw 74 and the hinge shaft 71 to prevent the hinge shaft 71 from coming out of the first hinge hole 12 and the second hinge hole 22.
  • the disc 75 passes through the positioning hole 42 on the cam and The pin shaft 72 of the pin hole 752 on the disc 75 rotates synchronously with the cam of the quick release handle 40 .
  • the self-locking mechanism includes a self-locking bolt 61, a limit screw 63 and a return elastic member 62.
  • the self-locking bolt 61 is provided with a narrow and long limit slot, and the self-locking bolt 61 is arranged in the sink groove 44.
  • the limit screw 63 is arranged in the limit threaded hole 45 to prevent the self-locking bolt 61 from coming out of the sink 44.
  • One end of the return elastic member 62 is against the limit screw 63, and the other end is against the self-locking bolt
  • the edge of the upper limit groove 61 makes the self-locking bolt 61 tend to protrude from the sink groove 44 .
  • the connecting rod 32 and the adjusting rod 31 drive the locking block 33 to move under the action of the elastic force of the reset elastic member 50, and pass the first convex part 331 of the locking block 33 and the second
  • the protrusions 332 are respectively engaged with the third slot 16 on the first connector 10 and the fourth slot on the second connector 20 to lock the first connector 10 and the second connector 20 , so as to realize the first connector 10 and the second connector 20 .
  • the quick release handle 40 Since the quick release handle 40 rotates around the hinge shaft passing through the eccentric hinge hole 41 on the cam, it drives the connecting rod 32 and the adjusting rod 31 to move, so as to realize the locking block 33 and the first joint 10 and the second connector 20 are snap-connected or disengaged, so that the first connector 10 and the second connector 20 are locked or released, and the quick release handle 40 turns over the dead center to lock the first connector 10 and the second connector 20
  • the self-locking bolt 61 moves in the direction of leaving the sinking groove 44 under the action of the return elastic member 62
  • the outer edge of the self-locking bolt 61 hangs on the protrusion 322 on the connecting rod 32
  • Restrict the rotation of the quick release handle 40 to achieve the effect of self-locking, press and hold the self-locking bolt 61 to separate the outer edge of the self-locking bolt 61 from the protrusion 322 on the connecting rod 32
  • the first connector 10 and the second connector 20 are separated from the
  • the first joint and the second joint are automatically locked by the reset elastic member, so as to improve the safety of the folding joint, and the quick release handle is locked by the locking of the quick release handle and the self-locking mechanism, which further guarantees the folding joint.
  • the self-locking mechanism there are many structures of the self-locking mechanism.
  • the snap-locking structure disclosed in Chinese patent document CN206307207U can replace the self-locking mechanism in the above embodiment as long as it can be used in conjunction with other structures.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

一种折叠接头，包括第一接头、第二接头、快拆手柄、锁紧机构和复位弹性件，第二接头的一侧和快拆手柄铰接连接于第一接头的一侧，第一接头上设有导向件，导向件上设有导向孔，锁紧机构穿过导向件的导向孔，复位弹性件套设于锁紧机构上，其一端抵持于导向件上，另一端抵持于锁紧机构上，驱动锁紧机构将第一接头和第二接头锁紧，快拆手柄用于驱动锁紧机构。该折叠接头，安全可靠性高。

Description

折叠接头 技术领域
本发明涉及机械连接结构，具体地说，涉及一种用于折叠自行车和折叠电动车上的折叠接头。
背景技术
折叠自行车轻巧，折叠后体积小，上下电梯、乘公交、坐地铁时可携带，在路上可展开使用，出行方便，也可置于汽车后备箱，郊游时既可体验汽车的便利，又可享受在大自然中骑行的乐趣。
折叠接头是折叠自行车上重要的部件，折叠自行车通过折叠接头实现自行车快速折叠或展开，减小折叠自行车的体积，方便了自行车的储藏或运输。
中国专利文献CN2619081Y公开一种四连杆结构的折叠接头，两连接板一侧铰接，各连接板的另一侧中部有凹台，调节杆及手柄的端部分别插入一个连接板的凹台中，有铰链轴贯穿调节杆或手柄并插入凹台两侧的连接板中，转动手柄，通过调节杆将两连接板顶紧或松开。
中国专利文献CN1406808A公开一种内锁式折叠接头，有两个分别与杆件相连的连接板在一侧铰接，两个连接板的对合面各有凹台，两个连接板凹台的至少一个相对应的边缘各开有卡槽，在其中一个连接板的凹台中置有可移动且一侧呈V形的夹持块，夹持块一侧V形的两凸缘在两个连接板并拢时可同时插入各凹台边缘的卡槽中，由拨动机构驱动夹持块移动，以使夹持块的凸缘插入或退出卡槽，拨动机构的手柄处于连接板的一侧之外。
现有的折叠接头一般有顶杆式折叠接头、四连杆式折叠接头、内锁式折叠接头和外锁式折叠接头，如前中国专利文献CN2619081Y公开一种四连杆结构的折叠接头以及CN1406808A公开一种内锁式折叠接头，使用者不小心带动手柄从锁紧位置转动一定的角度，折叠接头会松开，存在安全隐患，不符合部分国家或地区的安全标准。
发明内容
本发明的目的在于提供一种折叠接头，安全可靠性高。
本发明公开的折叠接头所采用的技术方案是:
一种折叠接头，包括第一接头、第二接头、快拆手柄、锁紧机构和复位弹性件，所述第二接头的一侧、第一接头的一侧和快拆手柄铰接连接，所述第一折叠接头上设有导向件，所述导向件上设有导向孔，所述锁紧机构穿过导向件的导向孔，所述复位弹性件套设于锁紧机构上，其一端抵持于导向件上，另一端抵持于锁紧机构上，驱动锁紧机构将第一接头和第二接头锁紧，所述快拆手柄用于驱动锁紧机构。
作为优选方案，所述锁紧机构为球头顶杆，所述球头顶杆一端与快拆手柄铰接连接，另一端设有球头部，所述复位弹性件套设于球头顶杆上，所述复位弹性件的另一端抵持于球头部，所述第二接头的另一侧内沿设有锁接部，所述锁接部上设有球头凹，当球头顶杆上的球头部抵接于球头凹将第一接头和第二接头锁紧。
作为优选方案，所述球头顶杆包括连杆和球头杆，所述连杆的一端设有圆孔，另一端与球头杆的一端螺纹连接，所述球头部设于球头杆的另一端。
作为优选方案，所述锁紧机构包括锁紧块和连接杆，所述连接杆的一端与快拆手柄铰接连接，另一端与锁紧块固定连接，所述复位弹性件套设于连接杆上，所述复位弹性件驱动锁紧块与第二接头卡接连接。
作为优选方案，所述第二接头另一侧的外缘设有第二卡槽，所述锁紧块上设有第二凸部，所述第二卡槽与第二凸部配合，所述锁紧块设于第一接头和第二接头的外侧，所述复位弹性件的另一端抵持于连接杆与快拆手柄铰接的一端。
作为优选方案，所述第一接头另一侧的外缘设有第一卡槽，所述锁紧块上还设有第一凸部，所述第一凸部与第一卡槽配合。
作为优选方案，所述第二接头另一侧的内沿设有第四卡槽，所述锁紧块上设有第二凸部，所述第四卡槽与第二凸部配合，所述锁紧块设于第一接头和第二接头之间，所述复位弹性件的另一端抵持于锁紧块。
作为优选方案，所述第一接头另一侧的内沿设有第三卡槽，所述锁紧块上 设有第一凸部，所述第一凸部与第三卡槽配合。
作为优选方案，所述锁紧块第二凸部外侧为弧面。
作为优选方案，所述快拆手柄上设有自锁机构。
作为优选方案，所述连接杆包括连杆和调节杆，所述调节杆一端与连杆螺纹连接，另一端与锁紧块螺纹连接，所述连杆一端设有圆孔。
作为优选方案，所述快拆手柄一端设有凸轮，所述凸轮与圆孔配合，所述凸轮上设有偏心铰接孔，所述凸轮通过穿过偏心铰接孔的铰接轴连接于第一接头上。
作为优选方案，还包括圆盘，所述快拆手柄的一端设有凸轮，所述凸轮上设有开槽、偏心铰接孔和定位孔，所述偏心铰接孔和定位孔穿过开槽，所述圆盘上设有偏心孔和销孔，所述圆盘设于凸轮的开槽中，并置于连杆的圆孔中，所述凸轮和连杆的一端通过穿过凸轮上的偏心铰接孔和圆盘上偏心孔的铰接轴以及穿过凸轮上定位孔和圆盘上的销孔的定位销连接于第一接头上。
本发明公开的折叠接头的有益效果是：第一接头和第二接头合上后，锁紧机构在复位弹性件弹力的作用下将第一接头和第二接头锁紧，实现第一接头和第二接头自动锁紧的效果，即使快拆手柄不经意间松脱，在复位弹性件的作用下，第一接头和第二接头也能锁紧，安全可靠性高。
附图说明
图1是本发明实施例一折叠接头的结构示意图；
图2是本发明实施例一折叠接头的接头示意图；
图3是本发明实施例一折叠接头的爆炸示意图；
图4是本发明实施例二折叠接头的结构示意图；
图5是本发明实施例二折叠接头的爆炸示意图；
图6是本发明实施例三折叠接头的接头示意图；
图7是本发明实施例三折叠接头的爆炸示意图。
具体实施方式
下面结合具体实施例和说明书附图对本发明做进一步阐述和说明:
实施例一
请参考图1至图3，一种折叠接头，包括第一接头10、第二接头20、锁紧机构30、快拆手柄40、复位弹性件50和自锁机构。
所述第一接头10的一侧设有第一铰接耳11，所述第一铰接耳11上设有第一铰接孔12，第一接头10的另一侧外缘设有第一卡槽13，所述第一接头10端面上设有导向件14，所述导向件14上设有导向孔。
所述第二接头20的一侧设有第二铰接耳21，所述第二铰接耳21上设有第二铰接孔22，所述第二接头20的另一侧外缘设有第二卡槽，图中未示出。
所述锁紧机构30包括锁紧块33、连杆32和调节杆31，所述连杆32的一端为大头端，该大头端设有圆孔321，该大头端的外沿设有凸起322，另一端设有螺纹连接孔，图中未示出。所述锁紧块33上设有螺纹孔333，所述螺纹孔333的两侧设有第一凸部331和第二凸部332，所述第二凸部332的外侧为弧面，请参考图3，所述第一凸部331与第一接头10上的第一卡槽13配合，所述第二凸部332与第二接头20上的第二卡槽配合。所述调节杆31一端与连杆32上的螺纹连接孔螺纹连接，另一端与锁紧块33上的螺纹孔333螺纹连接。所述锁紧块30设于第一接头10和第二接头20的外侧。
所述连杆32大头端的圆孔321中设有圆盘75，所述圆盘75上设有偏心孔751和销孔752。
所述快拆手柄40的一端设有凸轮，所述凸轮上设有开槽43、偏心铰接孔41和定位孔42，所述偏心铰接孔41和定位孔42穿过开槽43，所述快拆手柄40的另一端为把手，所述快拆手柄40的中部设有沉槽44和限位螺纹孔45，所述沉槽44穿过开槽43，所述限位螺纹孔45穿过沉槽44。所述圆盘75设于凸轮的开槽43中，所述第一接头10和第二接头20通过穿过第一接头10上的第一铰接孔12、第二接头20上的第二铰接孔22、快拆手柄40上的偏心铰接孔41以及圆盘75上的偏心孔751的铰接轴71铰接连接，所述铰接轴71两端设有螺孔，所述螺孔中设有螺丝74，所述螺丝74与铰接轴71之间设有垫片73，防止铰接轴71从第一铰接孔12和第二铰接孔22中脱出，所述圆盘75通过穿过凸轮上的定位孔42以及圆盘75上的销孔752的销轴72与快拆手柄40 的凸轮同步转动。
所述自锁机构包括自锁栓61、限位螺钉63和回位弹性件62，所述自锁栓61上设有狭长的限位槽，所述自锁栓61设于沉槽44中，所述限位螺钉63设于限位螺纹孔45中，防止自锁栓61从沉槽44中脱出，所述回位弹性件62的一端顶住限位螺钉63，另一端顶住自锁栓61上限位槽的边沿，使自锁栓61具有伸出沉槽44的趋势。
第一接头10和第二接头20合上后，连杆32和调节杆31在复位弹性件50弹力的作用下带动锁紧块33移动，通过锁紧块33的第一凸部331和第二凸部332分别与第一接头10上的第一卡槽13和第二接头20上的第二卡槽卡接将第一接头10和第二接头20锁紧，实现第一接头10和第二接头20自动锁紧的效果，即使快拆手柄40松脱，在复位弹性件50的作用下，所述锁紧块33与第一接头10卡紧，合上第二接头20，由于第二凸部332的外侧为弧面，第二接头20克服复位弹性件50的弹力，推动锁紧块33外移，锁紧块33避让第二接头20后在复位弹性件50的作用下，第二凸部332与第二接头20的第二卡槽卡接连接，实现第一接头10和第二接头20锁紧。转动快拆手柄40，带动圆盘75同步转动，由于快拆手柄40绕穿过凸轮上偏心铰接孔41的铰接轴71转动，带动连杆32和调节杆31移动，实现锁紧块33与第一接头10和第二接头20的卡接连接或者脱离，使得第一接头10和第二接头20锁紧或松开，快拆手柄40转过死点，使第一接头10和第二接头20锁紧时，起到保障锁紧的作用，自锁栓61在回位弹性件62的作用下向脱离沉槽44的方向移动，自锁栓61的外沿挂着连杆32上的凸起322，限制快拆手柄40转动，达到自锁的效果，按住自锁栓61，使自锁栓61的外沿与连杆32上的凸起322脱离，转动快拆手柄40，带动锁紧块33与第一接头10上的第一卡槽13和第二接头20上的第二卡槽脱离，进而打开第一接头10和第二接头20，提高了折叠接头的可靠性和安全性。
上述实施例中，即使第一接头10不设置第一卡槽，由于连杆32和调节杆31套设于导向件14的导向孔中，当锁紧块33与第二接头20卡紧时，导向件14对连杆32、调节杆31和锁紧块33的转动限制，使第一接头10和第二接头 20仍可锁紧。
实施例二
请参考图4和图5，一种折叠接头，包括第一接头10、第二接头20、锁紧机构、快拆手柄40、复位弹性件50和自锁机构。
所述第一接头10的一侧设有第一铰接耳11，所述第一铰接耳11上设有第一铰接孔12，第一接头10的另一侧设有过孔15，所述第一接头10端面上设有导向件14，所述导向件14上设有导向孔。
所述第二接头20的一侧设有第二铰接耳21，所述第二铰接耳21上设有第二铰接孔22，所述第二接头20的另一侧内沿设有向外延伸的锁接部23，锁接部23上设有球头凹24。
所述锁紧机构为球头顶杆，所述球头顶杆包括连杆32和球头杆34，所述连杆32的一端为大头端，该大头端设有圆孔321，该大头端的外沿设有凸起322，另一端设有螺纹连接孔。所述球头杆34一端设有外螺纹，另一端设有球头，所述球头与第二接头20上的球头凹24配合，所述球头杆34一端通过外螺纹与连杆32上的螺纹连接孔螺纹连接。由于第一接头10的另一侧设有过孔15，便于球头顶杆穿设于导向件14的导向孔中。
所述快拆手柄40的一端设有凸轮，所述凸轮上设有偏心铰接孔41，所述快拆手柄40的另一端为把手，所述快拆手柄40的中部设有沉槽44和限位螺纹孔45，所述沉槽44穿过开槽43，所述限位螺纹孔45穿过沉槽44。所述第一接头10和第二接头20通过穿过第一接头10上的第一铰接孔12、第二接头20上的第二铰接孔22、快拆手柄40上的偏心铰接孔41的铰接轴71铰接连接，所述铰接轴71两端设有螺孔，所述螺孔中设有螺丝74，所述螺丝74与铰接轴71之间设有垫片73，防止铰接轴71从第一铰接孔12和第二铰接孔22中脱出。
所述自锁机构包括自锁栓61、限位螺钉63和回位弹性件62，所述自锁栓61上设有狭长的限位槽，所述自锁栓61设于沉槽44中，所述限位螺钉63设于限位螺纹孔45中，防止自锁栓61从沉槽44中脱出，所述回位弹性件62的一端顶住限位螺钉63，另一端顶住自锁栓61上限位槽的边沿，使自锁栓61具有伸出沉槽44的趋势。
第一接头10和第二接头20合上后，连杆32和球头杆34在复位弹性件50弹力的作用下移动，由于锁接部23设于第二接头20的另一侧内沿且向外延伸的，球头杆34上的球头插入第二接头20上的球头凹24，由于导向件14对连杆32和球头杆34的转动限制从而将第一接头10和第二接头20锁紧，实现第一接头10和第二接头20自动锁紧的效果，即使快拆手柄40松脱，在复位弹性件50的作用下，连杆32和球头杆34向外伸，第二接头20向第一接头10合上，由于球头杆34的球头为光滑弧面状，锁接部23推动球头带动球头杆34克服复位弹性件50的弹力，当球头杆34上的球头滑入第二接头20上的球头凹24时，实现第一接头10和第二接头20锁紧。转动快拆手柄40，由于快拆手柄40绕穿过凸轮上偏心铰接孔41的铰接轴71转动，带动连杆32和球头杆34移动，实现球头杆34与第一接头10和第二接头20的插接或者脱离，使得第一接头10和第二接头20锁紧或松开，快拆手柄40转过死点，使第一接头10和第二接头20锁紧时，起到保障锁紧的作用，自锁栓61在回位弹性件62的作用下向脱离沉槽44的方向移动，自锁栓61的外沿挂着连杆32上的凸起322，限制快拆手柄40转动，达到自锁的效果，按住自锁栓61，使自锁栓61的外沿脱离连杆32上的凸起322，转动快拆手柄40，带动球头杆34与第一接头10和第二接头20脱离，进而打开第一接头10和第二接头20，提高了折叠接头的可靠性和安全性。
实施例三
请参考图6和图7，一种折叠接头，包括第一接头10、第二接头20、锁紧机构、快拆手柄40、复位弹性件50和自锁机构。
所述第一接头10的一侧设有第一铰接耳11，所述第一铰接耳11上设有第一铰接孔12，第一接头10的另一侧内沿设有第三卡槽16，所述第一接头10端面上设有导向件14，所述导向件14上设有导向孔。
所述第二接头20的一侧设有第二铰接耳21，所述第二铰接耳21上设有第二铰接孔22，所述第二接头20的另一侧内沿设有第四卡槽，图中未示出。
所述锁紧机构30包括锁紧块33、连杆32和调节杆31，所述连杆32的一端为大头端，该大头端设有圆孔321，该大头端的外沿设有凸起322，另一端 设有螺纹连接孔，图中未示出。所述锁紧块33上设有螺纹孔333，所述螺纹孔333的两侧设有第一凸部331和第二凸部332，所述第一凸部331与第一接头10上的第三卡槽16配合，所述第二凸部332与第二接头20上的第四卡槽配合，所述第二凸部332的外侧为光滑的弧面，利于第二接头20向第一接头10转动时推动锁紧块33移动。所述调节杆31一端与连杆32上的螺纹连接孔螺纹连接，另一端与锁紧块33上的螺纹孔333螺纹连接。所述锁紧块30设于第一接头10和第二接头20之间。
所述连杆32大头端的圆孔321中设有圆盘75，所述圆盘75上设有偏心孔751和销孔752。
所述快拆手柄40的一端设有凸轮，所述凸轮上设有开槽43、偏心铰接孔41和定位孔42，所述偏心铰接孔41和定位孔42穿过开槽43，所述快拆手柄40的另一端为把手，所述快拆手柄40的中部设有沉槽44和限位螺纹孔45，所述沉槽44穿过开槽43，所述限位螺纹孔45穿过沉槽44。所述圆盘75设于凸轮的开槽43中，所述第一接头10和第二接头20通过穿过第一接头10上的第一铰接孔12、第二接头20上的第二铰接孔22、快拆手柄40上的偏心铰接孔41以及圆盘75上的偏心孔751的铰接轴71铰接连接，所述铰接轴71两端设有螺孔，所述螺孔中设有螺丝74，所述螺丝74与铰接轴71之间设有垫片73，防止铰接轴71从第一铰接孔12和第二铰接孔22中脱出，所述圆盘75通过穿过凸轮上的定位孔42以及圆盘75上的销孔752的销轴72与快拆手柄40的凸轮同步转动。
所述自锁机构包括自锁栓61、限位螺钉63和回位弹性件62，所述自锁栓61上设有狭长的限位槽，所述自锁栓61设于沉槽44中，所述限位螺钉63设于限位螺纹孔45中，防止自锁栓61从沉槽44中脱出，所述回位弹性件62的一端顶住限位螺钉63，另一端顶住自锁栓61上限位槽的边沿，使自锁栓61具有伸出沉槽44的趋势。
第一接头10和第二接头20合上后，连杆32和调节杆31在复位弹性件50弹力的作用下带动锁紧块33移动，通过锁紧块33的第一凸部331和第二凸部332分别与第一接头10上的第三卡槽16和第二接头20上的第四卡槽卡接将第 一接头10和第二接头20锁紧，实现第一接头10和第二接头20自动锁紧的效果，即使快拆手柄40松脱，在复位弹性件50的作用下，第一接头10和第二接头20也能锁紧。转动快拆手柄40，带动圆盘同步转动，由于快拆手柄40绕穿过凸轮上偏心铰接孔41的铰接轴转动，带动连杆32和调节杆31移动，实现锁紧块33与第一接头10和第二接头20的卡接连接或者脱离，使得第一接头10和第二接头20锁紧或松开，快拆手柄40转过死点，使第一接头10和第二接头20锁紧时，起到保障锁紧的作用，自锁栓61在回位弹性件62的作用下向脱离沉槽44的方向移动，自锁栓61的外沿挂着连杆32上的凸起322，限制快拆手柄40转动，达到自锁的效果，按住自锁栓61，使自锁栓61的外沿与连杆32上的凸起322脱离，转动快拆手柄40，带动锁紧块33与第一接头10上的第三卡槽16和第二接头20的第四卡槽脱离，进而打开第一接头10和第二接头20，提高了折叠接头的可靠性和安全性。
上述实施例中，即使第一接头10不设置第三卡槽，由于连杆32和调节杆31套设于导向件14的导向孔中，当锁紧块33与第二接头20卡紧时，由于导向件14对连杆32、调节杆31和锁紧块33的转动限制，使第一接头10和第二接头20仍可锁紧。
上述实施例中通过复位弹性件将第一接头和第二接头自动锁紧，提升折叠接头的安全性，利用快拆手柄的锁紧以及自锁机构锁住快拆手柄，进一步保障折叠接头，申请人需要说明的是，自锁机构的结构很多，例如中国专利文献CN206307207U公开的按扣自锁结构，只要可与其它结构配合使用，均可替换上述实施例中的自锁机构。
最后应当说明的是，以上实施例仅用以说明本发明的技术方案，而非对本发明保护范围的限制，尽管参照较佳实施例对本发明作了详细地说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的实质和范围。

Claims (13)

  1. 一种折叠接头，包括第一接头、第二接头、快拆手柄和锁紧机构，所述第二接头的一侧、第一接头的一侧和快拆手柄铰接连接，其特征在于，还包括复位弹性件，所述第一折叠接头上设有导向件，所述导向件上设有导向孔，所述锁紧机构穿过导向件的导向孔，所述复位弹性件套设于锁紧机构上，其一端抵持于导向件上，另一端抵持于锁紧机构上，驱动锁紧机构将第一接头和第二接头锁紧，所述快拆手柄用于驱动锁紧机构。
  2. 如权利要求1所述的折叠接头，其特征在于，所述锁紧机构为球头顶杆，所述球头顶杆一端与快拆手柄铰接连接，另一端设有球头部，所述复位弹性件套设于球头顶杆上，所述复位弹性件的另一端抵持于球头部，所述第二接头的另一侧内沿设有锁接部，所述锁接部上设有球头凹，当球头顶杆上的球头部抵接于球头凹将第一接头和第二接头锁紧。
  3. 如权利要求2所述的折叠接头，其特征在于，所述球头顶杆包括连杆和球头杆，所述连杆的一端设有圆孔，另一端与球头杆的一端螺纹连接，所述球头部设于球头杆的另一端。
  4. 如权利要求1所述的折叠接头，其特征在于，所述锁紧机构包括锁紧块和连接杆，所述连接杆的一端与快拆手柄铰接连接，另一端与锁紧块固定连接，所述复位弹性件套设于连接杆上，所述复位弹性件驱动锁紧块与第二接头卡接连接。
  5. 如权利要求4所述的折叠接头，其特征在于，所述第二接头另一侧的外缘设有第二卡槽，所述锁紧块上设有第二凸部，所述第二卡槽与第二凸部配合，所述锁紧块设于第一接头和第二接头的外侧，所述复位弹性件的另一端抵持于连接杆与快拆手柄铰接的一端。
  6. 如权利要求5所述的折叠接头，其特征在于，所述第一接头另一侧的外缘设有第一卡槽，所述锁紧块上还设有第一凸部，所述第一凸部与第一卡槽配合。
  7. 如权利要求4所述的折叠接头，其特征在于，所述第二接头另一侧的内沿设有第四卡槽，所述锁紧块上设有第二凸部，所述第四卡槽与第二凸部配合，所述锁紧块设于第一接头和第二接头之间，所述复位弹性件的另一端抵持于锁 紧块。
  8. 如权利要求7所述的折叠接头，其特征在于，所述第一接头另一侧的内沿设有第三卡槽，所述锁紧块上设有第一凸部，所述第一凸部与第三卡槽配合。
  9. 如权利要求4-8任一项所述的折叠接头，其特征在于，所述锁紧块第二凸部外侧为弧面。
  10. 如权利要求1-8任一项所述的折叠接头，其特征在于，所述快拆手柄上设有自锁机构。
  11. 如权利要求4所述的折叠接头，其特征在于，所述连接杆包括连杆和调节杆，所述调节杆一端与连杆螺纹连接，另一端与锁紧块螺纹连接，所述连杆一端设有圆孔。
  12. 如权利要求3或11所述的折叠接头，其特征在于，所述快拆手柄一端设有凸轮，所述凸轮与圆孔配合，所述凸轮上设有偏心铰接孔，所述凸轮通过穿过偏心铰接孔的铰接轴连接于第一接头上。
  13. 如权利要求3或11所述的折叠接头，其特征在于，还包括圆盘，所述快拆手柄的一端设有凸轮，所述凸轮上设有开槽、偏心铰接孔和定位孔，所述偏心铰接孔和定位孔穿过开槽，所述圆盘上设有偏心孔和销孔，所述圆盘设于凸轮的开槽中，并置于连杆的圆孔中，所述凸轮和连杆的一端通过穿过凸轮上的偏心铰接孔和圆盘上偏心孔的铰接轴以及穿过凸轮上定位孔和圆盘上的销孔的定位销连接于第一接头上。
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US20090317178A1 (en) * 2008-06-23 2009-12-24 Ping-Tien Wang Tube folder
CN202208345U (zh) * 2011-07-15 2012-05-02 天津科林自行车有限公司 内锁式折叠接头
CN204489062U (zh) * 2015-02-11 2015-07-22 深圳市富厚自行车配件有限公司 一种双轴偏心锁紧机构及折叠接头
CN205661612U (zh) * 2016-06-01 2016-10-26 黄华平 一种带有自锁安全机构的折叠接头
CN212473781U (zh) * 2020-04-03 2021-02-05 深圳市志宏金属制品有限公司 折叠接头
CN213502759U (zh) * 2020-11-03 2021-06-22 深圳市志宏金属制品有限公司 折叠接头

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Publication number Priority date Publication date Assignee Title
CN1406808A (zh) * 2001-09-07 2003-04-02 韩德玮 内锁式折叠接头
US20090317178A1 (en) * 2008-06-23 2009-12-24 Ping-Tien Wang Tube folder
CN202208345U (zh) * 2011-07-15 2012-05-02 天津科林自行车有限公司 内锁式折叠接头
CN204489062U (zh) * 2015-02-11 2015-07-22 深圳市富厚自行车配件有限公司 一种双轴偏心锁紧机构及折叠接头
CN205661612U (zh) * 2016-06-01 2016-10-26 黄华平 一种带有自锁安全机构的折叠接头
CN212473781U (zh) * 2020-04-03 2021-02-05 深圳市志宏金属制品有限公司 折叠接头
CN213502759U (zh) * 2020-11-03 2021-06-22 深圳市志宏金属制品有限公司 折叠接头

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