CN218881797U

CN218881797U - Hand crank

Info

Publication number: CN218881797U
Application number: CN202320233677.4U
Authority: CN
Inventors: 边金城; 李括; 童志峰
Original assignee: Lishi Shanghai Sunshade Technology Co ltd
Current assignee: Lishi Shanghai Sunshade Technology Co ltd
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-04-18
Anticipated expiration: 2033-02-16

Abstract

The utility model relates to a crank, including folding rocking arm, a serial communication port, the upper end of folding rocking arm is provided with the outer tube, the upper end of outer tube is provided with the inner tube, be provided with coupling assembling between outer tube and the inner tube, folding rocking arm includes the rocking arm main part, the inboard of rocking arm main part is provided with changes the mouth, first connecting piece is installed to the inboard of changeing the mouth, peg graft in the inboard of outer tube in the upper end of first connecting piece, the lower extreme setting of rocking arm main part is connected with the second connecting piece, the second connecting piece passes through the bolt and is connected with the rotation of rocking arm main part, uses flexible pipe in this embodiment to make crank length adjustable, better use under the condition of multiple height, and folding rocking arm can fold and pack up, and convenient folding rocking arm accomodates.

Description

Hand crank

Technical Field

The utility model relates to a crank technical field specifically is a crank.

Background

On-vehicle awning is one of the indispensable annex of car as a house, and it can play for carrying out cooking outside the car as a house and gather the function that the user of meal sheltered from sunshine and rainwater, very big increase the travelling comfort and the functional of car as a house, and on-vehicle awning need adjust when opening, can utilize the crank to come supplementary regulation generally.

The prior foldable hand crank is easy to swing because the rocker arm part is not limited in use after being folded, is not vertical to the main body long rod part and is inconvenient to swing. When the hand crank is not used, the hand crank is straightened into a straight rod, the size is longer, the hand crank is not easy to store and transport, the whole hand crank is formed by bending a long rod, the hand crank is not easy to store and transport due to an irregular shape, the length is not adjustable, the application range is small, and therefore the hand crank is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hand crank to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a crank, includes folding rocking arm, its characterized in that, the upper end of folding rocking arm is provided with the outer tube, the upper end of outer tube is provided with the inner tube, be provided with coupling assembling between outer tube and the inner tube, folding rocking arm includes the rocking arm main part, the inboard of rocking arm main part is provided with changes the mouth, first connecting piece is installed to the inboard of changeing the mouth, peg graft in the inboard of outer tube in the upper end of first connecting piece, the lower extreme setting of rocking arm main part is connected with the second connecting piece, the second connecting piece passes through the bolt and is connected with the rocking arm main part rotation.

Optionally, the outer side of the first connecting piece is provided with an outer rib, a first spring is arranged below the outer rib of the outer side of the first connecting piece, two groups of first handles are arranged on the inner side of the rocker arm main body and connected through a buckle, a convex rib is arranged on the inner side of each first handle, and the lower end of each first spring is clamped above the corresponding convex rib.

Optionally, the outside of second connecting piece is provided with outer muscle, the top of the outer muscle in the outside of second connecting piece is provided with the second spring, the outside of second connecting piece is provided with two sets of second handles, and is two sets of pass through bayonet socket between the second handle, the inboard of second handle is provided with two sets of snap rings, second spring joint is between two sets of snap rings.

Optionally, a hexagonal head is arranged at the upper end of the first connecting piece, and the hexagonal head is fixed on the inner side of the outer tube through a pin.

Optionally, the connecting assembly includes a locking knob, a locking inner sleeve, and a hexagonal tail insert, the lower end of the locking inner sleeve is inserted into the inner side of the outer tube, the upper end of the locking inner sleeve is sleeved on the outer side of the inner tube, the inner wall of the outer tube is provided with a dodecagonal inner wall, the dodecagonal inner wall is engaged with the lower end of the locking inner sleeve, and the outer side of the locking inner sleeve is provided with an opening.

Optionally, the upper end of the hexagonal tail insert is inserted into the inner side of the inner tube through a pin, the lower end of the hexagonal tail insert is provided with a hexagonal head, the hexagonal head is matched with the inner wall of the dodecagonal angle, and the hexagonal head is located below the locking inner sleeve.

Optionally, the locking knob is sleeved outside the inner tube, an external thread is arranged outside the upper end of the outer tube, the inner side of the locking knob is matched with the external thread, and a slope with a narrow top and a wide bottom is measured in the locking knob 41.

Compared with the prior art, the beneficial effects of the utility model are that:

the hand crank can be upwards extruded by two groups of second handles through the extrusion of the second springs, the second handles are clamped into the inner side of the rocker arm body, the first handles can be pressed into the inner side of the rocker arm body through the first springs in the same way, the folding is more stable through the first springs and the second springs, the first connecting piece can be guaranteed to rotate only towards the inner side of the rocker arm body through a rotary opening, the folding rocker arm can be conveniently folded, when the length of the rocker arm needs to be adjusted, the outer pipe is upwards pulled out, the length of the integral telescopic pipe is increased, the integral length is shortened after the outer pipe is downwards withdrawn, the locking knob is screwed onto the external thread, the upper end of the locking inner sleeve can be contracted through the upper width and the upper end of the inner wall of the locking knob, the inner pipe is fastened, the inner pipe is fixed, the hexagonal tail can be clamped through the twelve-angle inner wall, the hexagonal tail is prevented from being inserted and rotated, the device can enable the length of the hand crank to be adjustable through the use of the telescopic pipe, the hand crank can be better used under the condition of various heights, the folding rocker arm can be folded and folded, and the folding rocker arm can be conveniently stored.

Drawings

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

fig. 2 is an explosion structure diagram of a hand crank of the utility model;

fig. 3 is a schematic view of a partial structure of a hand crank of the present invention;

fig. 4 is a schematic view of a partial structure of a hand crank of the present invention.

In the figure: 1. folding the rocker arm; 11. a rocker arm body; 12. turning the opening; 13. a first connecting member; 14. a first spring; 15. a first handle; 16. a second connecting member; 17. a second spring; 18. a second handle; 19. a rib is protruded; 110. a snap ring; 2. an outer tube; 3. an inner tube; 4. a connecting assembly; 41. locking the knob; 42. locking the inner sleeve; 43. inserting a hexagonal tail; 44. an external thread; 45. twelve-angle inner wall.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1 to 4, the utility model provides a crank handle, including folding rocking arm 1, a serial communication port, folding rocking arm 1's upper end is provided with outer tube 2, outer tube 2's upper end is provided with inner tube 3, be provided with coupling assembling 4 between outer tube 2 and the inner tube 3, folding rocking arm 1 includes rocking arm main part 11, rocking arm main part 11's inboard is provided with changes mouthful 12, change mouthful 12 inboard and install first connecting piece 13, the upper end of first connecting piece 13 is pegged graft in outer tube 2's inboard, rocking arm main part 11's lower extreme sets up and is connected with second connecting piece 16, second connecting piece 16 rotates through bolt and rocking arm main part 11 and is connected.

In this embodiment, the outer rib is arranged on the outer side of the first connecting piece 13, the first spring 14 is arranged below the outer rib on the outer side of the first connecting piece 13, the two groups of first handles 15 are arranged on the inner side of the rocker arm main body 11, the two groups of first handles 15 are connected through the buckle, the convex rib 19 is arranged on the inner side of the first handle 15, and the lower end of the first spring 14 is clamped above the convex rib 19.

The outside of second connecting piece 16 is provided with outer muscle, and the top of the outer muscle in the outside of second connecting piece 16 is provided with second spring 17, and the outside of second connecting piece 16 is provided with two sets of second handles 18, and through bayonet fixed between two sets of second handles 18, the inboard of second handle 18 is provided with two sets of snap rings 110, and second spring 17 joint is between two sets of snap rings 110.

Specifically, extrude 10 can upwards extrude two sets of second handles 18 through second spring 17, make second handle 18 block go into the inboard of rocking arm main part 11, can impress the inboard of rocking arm main part 11 with first handle 15 through first spring 14 like this, can make folding more stable through first spring 14, second spring 17, can guarantee through commentaries on classics mouth 12 that first connecting piece 13 can only rotate to the inboard of rocking arm main part 11, make things convenient for folding taking up of rocking arm 1.

In this embodiment, the upper end of the first connecting member 13 is provided with a hexagonal head, and the hexagonal head is fixed to the inside of the outer tube 2 by a pin.

Specifically, the hexagonal head can facilitate the connection of the first connecting piece 13 and the outer tube 2, and the first connecting piece 13 is prevented from rotating on the inner side of the outer tube 2.

In this embodiment, the connecting assembly 4 includes a locking knob 41, a locking inner sleeve 42, and a hexagonal tail insert 43, the lower end of the locking inner sleeve 42 is inserted into the inner side of the outer tube 2, the upper end of the locking inner sleeve 42 is sleeved on the outer side of the inner tube 3, the inner wall of the outer tube 2 is provided with a dodecagonal inner wall 45, the dodecagonal inner wall 45 is engaged with the lower end of the locking inner sleeve 42, and the outer side of the locking inner sleeve 42 is provided with an opening.

Specifically, the inner tube 3 can be clamped through the locking inner sleeve 42, so that the inner tube 3 is convenient to fix, and the locking inner sleeve 42 can be prevented from rotating through the dodecagonal inner wall 45.

In this embodiment, the upper end of the hexagonal socket 43 is inserted into the inner side of the inner tube 3 by a pin, and the lower end of the hexagonal socket 43 is provided with a hexagonal head which is matched with the dodecagonal inner wall 45 and is located below the locking inner sleeve 42.

Specifically, the outer tube 2 and the inner tube 3 can be connected by the hexagonal socket 43 to prevent the outer tube 2 and the inner tube 3 from being separated from each other, and the hexagonal socket 43 can be prevented from rotating inside the outer tube 2 by the dodecagonal inner wall 45.

In this embodiment, the locking knob 41 is sleeved outside the inner tube 3, the outer side of the upper end of the outer tube 2 is provided with an external thread 44, the inner side of the locking knob 41 is matched with the external thread 44, and a slope with a narrow top and a wide bottom is measured in the locking knob 41.

Specifically, the upper end of the locking inner sleeve 42 can be contracted by the width of the lower part and the width of the upper part of the inner wall of the locking knob 41, so that the inner tube 3 is fastened, and the inner tube 3 is fixed.

The working principle is as follows: when the device is used, a handle formed by holding two groups of second handles 18 can drive the rocker arm main body 11, the first connecting piece 13 drives the outer pipe 2 to rotate, the inner pipe 3 is driven to rotate through the connecting assembly 4, when the crank handle needs to be folded, the rocker arm main body 11 is upwards rotated to enable the first connecting piece 13 to rotate on the inner side of the rotary port 12, the two groups of first handles 15 are clamped into the inner side of the rocker arm main body 11, the two groups of second handles 18 can be clamped into the lower end of the rocker arm main body 11 in the same way, when the length of the crank handle needs to be adjusted, the length of the whole telescopic pipe is increased by upwards pulling out the outer pipe 2, the whole length is shortened by downwards withdrawing, the locking knob 41 is screwed on the external thread 44, the upper end of the locking inner sleeve 42 can be contracted through the width below and the width above the inner wall of the locking knob 41, the inner pipe 3 is fastened, the inner pipe 3 is fixed, and the locking knob 41 can be reinserted into the inner side of the outer pipe 2.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a crank, includes folding rocking arm (1), its characterized in that, the upper end of folding rocking arm (1) is provided with outer tube (2), the upper end of outer tube (2) is provided with inner tube (3), be provided with coupling assembling (4) between outer tube (2) and inner tube (3), folding rocking arm (1) includes rocking arm main part (11), the inboard of rocking arm main part (11) is provided with changes mouthful (12), first connecting piece (13) are installed to the inboard of changeing mouthful (12), peg graft in the inboard of outer tube (2) in the upper end of first connecting piece (13), the lower extreme setting of rocking arm main part (11) is connected with second connecting piece (16), second connecting piece (16) are rotated through bolt and rocking arm main part (11) and are connected.

2. A hand crank according to claim 1, characterized in that the outside of the first connecting piece (13) is provided with an outer rib, a first spring (14) is arranged below the outer rib of the outside of the first connecting piece (13), the inner side of the rocker arm body (11) is provided with two sets of first handles (15) which are connected with each other through a buckle, the inner side of each first handle (15) is provided with a convex rib (19), and the lower end of the first spring (14) is clamped above the convex rib (19).

3. A hand crank according to claim 1, characterized in that the outside of the second connecting piece (16) is provided with an outer rib, a second spring (17) is arranged above the outer rib of the outside of the second connecting piece (16), two sets of second handles (18) are arranged on the outside of the second connecting piece (16), the second handles (18) are fixed through bayonets, two sets of snap rings (110) are arranged on the inside of the second handles (18), and the second spring (17) is clamped between the two sets of snap rings (110).

4. A hand crank according to claim 1, characterized in that the upper end of the first connecting piece (13) is provided with a hexagonal head which is fixed by means of a pin on the inside of the outer tube (2).

5. The crank handle according to claim 1, wherein the connecting assembly (4) comprises a locking knob (41), an inner locking sleeve (42) and a hexagonal socket (43), the lower end of the inner locking sleeve (42) is inserted into the inner side of the outer tube (2), the upper end of the inner locking sleeve (42) is sleeved on the outer side of the inner tube (3), the inner wall of the outer tube (2) is provided with a dodecagonal inner wall (45), the dodecagonal inner wall (45) is matched with the lower end of the inner locking sleeve (42), and the outer side of the inner locking sleeve (42) is provided with an opening.

6. A hand crank according to claim 5 characterized in that the hexagonal socket (43) is inserted at its upper end into the inner side of the inner tube (3) by a pin, and the hexagonal socket (43) is provided at its lower end with a hexagonal head which fits the inner wall (45) of the twelve-angle corner and is located below the inner locking sleeve (42).

7. A hand crank according to claim 5, wherein the locking knob (41) is sleeved outside the inner tube (3), an external thread (44) is arranged outside the upper end of the outer tube (2), the inner side of the locking knob (41) is matched with the external thread (44), and the locking knob (41) is internally provided with a slope with a narrow top and a wide bottom.