CN211107831U

CN211107831U - Folding device with self-locking function

Info

Publication number: CN211107831U
Application number: CN201921816061.XU
Authority: CN
Inventors: 朱炎根
Original assignee: Dongguan Yuanshun Hardware Products Co ltd
Current assignee: Dongguan Yuanshun Hardware Products Co ltd
Priority date: 2019-10-26
Filing date: 2019-10-26
Publication date: 2020-07-28
Anticipated expiration: 2029-10-26

Abstract

The utility model discloses a folding device with self-locking function, which comprises an upper main body and a lower main body, wherein one side of the upper main body and the lower main body are hinged through a rotating shaft, a handle is hinged with the free end of the lower main body through a handle shaft, a connecting pipe is fixedly connected on the upper main body, a mandril rotating shaft is arranged at the free end of the upper main body, and a mandril is vertically arranged on the axis of the mandril rotating shaft; an arc groove matched with the ejector rod is formed in the wall body at the lower part of the handle; the handle is also provided with a button which can slide up and down along the outer wall of the handle and a first locking block which is arranged in the handle in a sliding way and is fixedly connected with the button; a second locking block matched with the first locking block is fixedly connected to the connecting pipe; when the upper main body and the lower main body are overlapped and buckled with the handle, the top end of the ejector rod is abutted against the inner surface of the arc groove to form self-locking, and the first locking block and the second locking block are clamped with each other. The utility model has the advantages of simple and reasonable structure, folding convenient operation and self-locking function safe and reliable.

Description

Folding device with self-locking function

Technical Field

The utility model relates to a folding device technical field specifically is a folding device with self-locking function is related to.

Background

With the development of society and the improvement of living standard of people, folding products such as folding bicycles, folding electric vehicles and folding scooters are continuously appeared in our lives, and the living standard of people is greatly improved. And the folding device plays a great role in the above folding type products. The folding device can reduce the volume of the folding product and can be conveniently stored after the folding is finished, so that the folding device is an important component of the folding product. The existing folding devices are of a plurality of types, but have the following defects in the using process: the self-locking device has a plurality of parts and a complex structure, so that the processing and installation difficulty is high, the time is long, and the production cost is very high; secondly, in order to ensure that tools such as the scooter and the like can slide safely and be folded reliably, the scooter and the like are very laborious to operate by both hands during folding, especially the scooter is very laborious to operate by children, and can be unfolded only by assistance of adults when necessary; thirdly, the self-locking device has many parts, and as long as one of the parts fails, the whole self-locking device can fail and the safety is poor.

In view of this, publication no: CN203211447U discloses a folder with a safe self-locking structure, which comprises a left folder box and a right folder box hinged with each other through a folding rotating shaft at one side, and a handle hinged with the free end of the right folder box through a handle shaft, and is characterized in that the free end of the left folder box is provided with a mandril rotating shaft, and a mandril is vertically arranged on the axis vertical to the mandril rotating shaft; the wall body of the lower part of the handle is provided with an arc groove, when the left box and the right box of the folder are overlapped and buckled with the handle, the inner surface of the arc groove and the top end of the ejector rod form self-locking, the axis of the handle shaft and the axis of the rotating shaft of the ejector rod are perpendicular to the axis direction of the ejector rod and are separated by a certain distance, and the handle shaft is closer to the folding rotating shaft than the rotating shaft of the ejector rod. However, such folders present certain problems, such as: although the folder is convenient to use, the top end of the ejector rod is tightly abutted against the inner surface of the arc groove to form self-locking, and if the folder is used on a bumpy road, the risk that the ejector rod can be separated from the arc groove still exists, and further the body of people can be damaged.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art exists above, the utility model aims at providing a folding device with self-locking function, its simple structure is reasonable, folding convenient operation and self-locking function safe and reliable.

In order to realize the purpose, the technical scheme of the utility model is that:

a folding device with a self-locking function comprises an upper main body and a lower main body, wherein one side of the upper main body and one side of the lower main body are hinged through a rotating shaft, a handle is hinged with the free end of the lower main body through a handle shaft, a connecting pipe is fixedly connected to the upper main body, a push rod rotating shaft is arranged at the free end of the upper main body, and a push rod is vertically arranged on the axis of the push rod rotating shaft; an arc groove matched with the ejector rod is formed in the wall body at the lower part of the handle; the handle is also provided with a button which can slide up and down along the outer wall of the handle and a first locking block which is arranged in the handle in a sliding way and is fixedly connected with the button; a second locking block matched with the first locking block is fixedly connected to the connecting pipe; when the upper main body and the lower main body are overlapped and buckled with the handle, the top end of the ejector rod is abutted against the inner surface of the arc groove to form self-locking, and the first locking block and the second locking block are clamped with each other.

As a specific embodiment, a first clamping block is arranged on one side of the bottom of the first locking block close to the inside, and a first clamping gap is formed between the first clamping block and the inner wall of the handle; a second clamping block is arranged on one side, close to the outside, of the top of the second locking block, and a second clamping gap is formed between the second clamping block and the connecting pipe; when the upper main body and the lower main body are overlapped and buckled on the handle, the first clamping block is clamped into the second clamping gap, and the second clamping block is clamped into the first clamping gap.

As a specific embodiment, the ejector rod is a screw, and is in threaded connection with the ejector rod rotating shaft.

As a specific embodiment, a protruding tube is integrally formed at the top of the upper main body, and the lower end of the connecting tube is sleeved on the protruding tube and is fixedly connected with the protruding tube.

Furthermore, the second locking block, the connecting pipe and the protruding pipe are fixedly connected through screws.

As a specific embodiment, the rotating shaft of the ejector rod is sleeved with a first reset torsion spring, one end of the first reset torsion spring is fixed to the upper main body, and the other end of the first reset torsion spring is sleeved on the ejector rod.

As a specific embodiment, a second reset torsion spring is further sleeved on the handle shaft, and two ends of the second reset torsion spring are respectively fixed on the upper main body and the handle.

The utility model has the advantages that:

the utility model has the advantages of simple and reasonable structure, folding convenient operation and self-locking function safe and reliable. Thereby form a safety mechanism through setting up first latch segment and the second latch segment that can press the button and can block for the ejector pin is difficult to break away from the circular arc recess because of vibrations when the top surface of ejector pin offsets and constitutes the auto-lock with the inner face of circular arc recess, has improved self-lock device's security promptly. And the first reset torsion spring and the second reset torsion spring can provide thrust correspondingly when the ejector rod and the handle rotate.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the handle of the present invention in an open state;

fig. 3 is a schematic view of the handle of the present invention in a locked state;

fig. 4 is a cross-sectional view of fig. 3.

Reference numerals:

1. a rotating shaft; 2. an upper body; 3. a lower body; 4. a handle shaft; 5. a handle; 51. a circular arc groove; 6. a connecting pipe; 7. a rotating shaft of the mandril; 8. a top rod; 9. a first return torsion spring; 10. a button; 11. a first locking block; 111. a first clamping block; 112. a first clamping gap; 12. a second locking block; 121. a second fixture block; 122. a second clamping gap; 13. and (4) extruding a pipe.

Detailed Description

The invention will be further elucidated with reference to the drawings and the embodiments, which are exemplary only and do not limit the scope of the invention.

As shown in fig. 1-4, a folding device with self-locking function comprises an upper main body 2 and a lower main body 3 hinged to each other at one side through a rotating shaft 1, a handle 5 hinged to the free end of the lower main body 3 through a handle shaft 4, a connecting pipe 6 fixedly connected to the upper main body 2, a push rod rotating shaft 7 arranged at the free end of the upper main body 2, and a push rod 8 vertically arranged on the axis of the push rod rotating shaft 7; an arc groove 51 matched with the mandril 8 is arranged on the wall body at the lower part of the handle 5; the handle 5 is also provided with a button 10 which can slide up and down along the outer wall of the handle 5 and a first locking block 11 which is arranged in the handle 5 in a sliding way and is fixedly connected with the button 10; a second locking block 12 matched with the first locking block 11 is fixedly connected to the connecting pipe 6; preferably, the top rod 8 is a screw, which is in threaded connection with the top rod 8, so that the height of the screw can be conveniently adjusted to be adjusted to a required height. And the top of the mandril 8 and the inner surface of the circular arc groove 51 are arc surfaces which are matched with each other. A first clamping block 111 is arranged on one side, close to the inside, of the bottom of the first locking block 11, and a first clamping gap 112 is formed between the first clamping block 111 and the inner wall of the handle 5; a second clamping block 121 is arranged on one side of the top of the second locking block 12 close to the outside, and a second clamping gap 122 is formed between the second clamping block 121 and the connecting pipe 6; when the upper body 1 and the lower body 2 are overlapped and fastened on the handle 5, the highest vertex of the sliding mandril 8 on the inner surface of the arc-shaped groove 51 is mutually abutted to form self-locking, then the button 10 is pushed to slide downwards, so that the first clamping block 111 is clamped into the second clamping notch 122, and the second clamping block 121 is clamped into the first clamping notch 112. Can strengthen folding device's auto-lock effect through setting up first latch segment 11 and second latch segment 12, when the top of ejector pin 8 constitutes the auto-lock with the inner face of circular arc recess 51, the block of rethread first latch segment 11 and second latch segment 12 can make the contact between circular arc recess 51 and the ejector pin 8 more firm, thereby even one of ejector pin 8 or handle 5 is not hard up to handle 5 directly throw off and cause opening of folding device to some extent yet, namely button 10, constitute a safety mechanism between first latch segment 11 and the second latch segment 12. Similarly, when the folding device needs to be unlocked, the button 10 is pushed reversely to slide the first locking block 11 in the opposite direction, so that the first locking block 11 is separated from the second locking block 12, and then the handle 5 can be pulled to rotate outwards to slide the top end of the ejector rod 8 out of the arc groove 51, so that the unlocking step is completed.

There is a protruding exit tube 13 at the top integrated into one piece of last main part 2, and the lower pot head of connecting pipe 6 is established on protruding exit tube 13 and with protruding pipe 13 fixed connection, can make the connection between connecting pipe 6 and last main part 2 more firm through setting up protruding exit tube 13, has also strengthened the rigidity of connecting pipe 6 lower extreme for it is difficult for damage to go up main part 2 and connecting pipe 6. Specifically, through screw fixed connection between second latch segment 12, connecting pipe 6, the bulge tube 13, can make second latch segment 12 more firm through screw fixed connection between these three, be difficult to not hard up.

Preferably, the rotating shaft 7 of the push rod is sleeved with a first reset torsion spring 9, one end of the first reset torsion spring 9 is fixed on the upper main body 2, and the other end of the first reset torsion spring 9 is sleeved on the push rod 8. The first reset torsion spring 9 is arranged, so that the top end of the ejector rod 8 can always keep a trend of moving outwards when the top end of the ejector rod 8 is tightly abutted against the inner surface of the arc groove 51, and the ejector rod 8 can be reset smoothly when being separated from the handle 5; meanwhile, the first reset torsion spring 9 can also push the mandril 8 in the process that the mandril 8 slides out of the arc groove 51.

Preferably, a second restoring torsion spring 14 is sleeved on the handle shaft 4, and two ends of the second restoring torsion spring 14 are respectively fixed on the upper main body 2 and the handle 5. Similarly, the handle 5 can always keep the trend of moving outwards when the top end of the mandril 8 is tightly abutted against the inner surface of the arc groove 51 by the second reset torsion spring 14, so that the handle 5 can be reset smoothly when being separated from the mandril 8; and the second reset torsion spring 14 can also enable the mandril 8 to push the handle 5 in the process of sliding out of the circular arc groove 51.

When the upper main body 2 and the lower main body 3 are overlapped and buckled with the handle 5, the inner surface of the arc groove 51 slides through the highest vertex of the mandril 8 to be tightly propped to form self-locking, and then the push button 10 is pushed to slide downwards to drive the first locking block 11 to slide downwards, so that the first clamping block 111 is clamped into the second clamping notch 122 and the second clamping block 121 is clamped into the first clamping notch 112, and the upper main body 2 and the lower main body 3 can not be automatically opened. Similarly, the button 10 is pushed in the opposite direction to drive the first locking block 11 to slide in the opposite direction, so that the first locking block 11 is separated from the second locking block 12, and then the handle 5 is pulled to enable the mandril 8 to slide out of the arc groove 51, so that the upper main body 2 and the lower main body 3 can be opened.

The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.

Claims

1. A folding device with a self-locking function comprises an upper main body and a lower main body, wherein one side of the upper main body and one side of the lower main body are hinged through a rotating shaft, a handle is hinged with the free end of the lower main body through a handle shaft, a connecting pipe is fixedly connected to the upper main body, a push rod rotating shaft is arranged at the free end of the upper main body, and a push rod is vertically arranged on the axis of the push rod rotating shaft; seted up on the wall body of handle lower part with ejector pin complex circular arc recess, its characterized in that:

the handle is also provided with a button which can slide up and down along the outer wall of the handle and a first locking block which is arranged in the handle in a sliding way and is fixedly connected with the button; a second locking block matched with the first locking block is fixedly connected to the connecting pipe; when the upper main body and the lower main body are overlapped and buckled with the handle, the top end of the ejector rod is abutted against the inner surface of the arc groove to form self-locking, and the first locking block and the second locking block are clamped with each other.

2. The folding device with self-locking function according to claim 1, characterized in that:

a first clamping block is arranged on one side, close to the inside, of the bottom of the first locking block, and a first clamping gap is formed between the first clamping block and the inner wall of the handle; a second clamping block is arranged on one side, close to the outside, of the top of the second locking block, and a second clamping gap is formed between the second clamping block and the connecting pipe; when the upper main body and the lower main body are overlapped and buckled on the handle, the first clamping block is clamped into the second clamping gap, and the second clamping block is clamped into the first clamping gap.

3. The folding device with self-locking function according to claim 1, characterized in that:

the ejector rod is a screw and is in threaded connection with the ejector rod rotating shaft.

4. The folding device with self-locking function according to claim 1, characterized in that:

the top integrated into one piece of going up the main part has a protruding exit tube, the lower pot head of connecting pipe is established on the protruding exit tube and with protruding pipe fixed connection.

5. The folding device with self-locking function according to claim 4, characterized in that:

the second locking block, the connecting pipe and the protruding pipe are fixedly connected through screws.

6. The folding device with self-locking function according to claim 1, characterized in that:

the push rod rotating shaft is sleeved with a first reset torsion spring, one end of the first reset torsion spring is fixed to the upper main body, and the other end of the first reset torsion spring is sleeved on the push rod.

7. The folding device with self-locking function according to claim 1, characterized in that:

still the cover is equipped with the second reset torsion spring on the handle axle, the both ends of second reset torsion spring are fixed respectively go up the main part with on the handle.