CN201651018U

CN201651018U - Ratchet wheel type pivot device and folding device with same

Info

Publication number: CN201651018U
Application number: CN2009202792527U
Authority: CN
Inventors: 钟佳科; 吴承学
Original assignee: Shin Zu Shing Co ltd
Current assignee: Shin Zu Shing Co ltd
Priority date: 2009-11-17
Filing date: 2009-11-17
Publication date: 2010-11-24
Anticipated expiration: 2019-11-17

Abstract

The utility model relates to a ratchet formula pivot ware and have this ratchet formula pivot ware's folding device, wherein this ratchet formula pivot ware contains: a rotating shaft; a rotary ratchet wheel which is rotatably sleeved on the rotating shaft; a fixed ratchet wheel which is sleeved on the rotating shaft in a non-rotatable manner and is pushed by a spring to be meshed with the rotating ratchet wheel through ratchets; the sleeve is provided with a connecting part and forms a slit along the axial direction, and the sleeve is sleeved on the rotating ratchet wheel; the folding device comprises a body and a foot rest, wherein the body is mutually fixed with the rotating shaft, the foot rest is mutually fixed with the assembling part of the sleeve, and the unfolding direction of the foot rest relative to the body is the same as the rotating direction of the rotating ratchet wheel which can relatively fix the ratchet wheel; the assembling part of the sleeve can drive the rotating ratchet wheel to rotate when rotating towards the direction in which the slot is formed, but the assembling part can rotate relative to the rotating ratchet wheel when rotating reversely, thereby achieving the purpose of positioning the foot rest of the folding device in a single-turning multi-section way.

Description

Ratchet-type pivot device and have the collapsible device of this ratchet-type pivot device

Technical field

The utility model relates to a kind of pivot device, refers to a kind of being installed on the portable electronic devices especially, makes the pivot device of this electronic equipment for amounting to.

Background technique

The collapsible device, it generally has can counterrotating two positions, mobile computer for example, can rotate mutually between base in the mobile phone and the loam cake, loam cake is operated or amount to loam cake after finishing using thereby can open, for reaching above-mentioned purpose, must be provided with pivot device in the collapsible device, the pivot device structure of prior art, such as No. the 566771st, the novel patent announcement in Taiwan announcement, it mainly has a rotary shaft, one shaft, one pushing top spring and an axle that is arranged in above-mentioned each part, wherein this rotary shaft and shaft be respectively applied for be fixed in the collapsible device can counterrotating two positions on, both and with the one side join, be respectively equipped with the jog that can cooperatively interact on this face that joins, and this elastic component is to be provided with adjacently with this rotary shaft, and ejection rotary shaft and shaft are oppressed mutually;

Can counterrotating two positions (following is example with loam cake and base) in the collapsible device when rotating relatively, rotate but the driven rotary axial region is relative with shaft, and design according to the jog on the abutted surface of rotary shaft and shaft, in the time of can reaching loam cake and on positive and negative both direction, rotate with respect to base, the purposes that can on 180 degree, per 90 degree or other angle, locate all.

The design of above-mentioned pivot device, really has the purpose that on the forward or reverse direction, all can locate, when yet the collapsible device uses, loam cake no doubt needs to be positioned an angle so that operation, but be that expectation can be closed loam cake as early as possible after finishing using, and the pivot device of prior art, owing to have two-way locating function, therefore cause on the contrary when closing loam cake and must spend extra time and strength, really very inconvenience of user.

Summary of the invention

Because use the collapsible device of the pivot device of above-mentioned prior art, it has the shortcoming that wastes time and energy when closing loam cake, the utility model is by improvement pivot device structure, makes it only have locating function on single sense of rotation, solves above-mentioned shortcoming according to this.

For reaching above-mentioned purpose, the employed technological means of the utility model is to provide a kind of ratchet-type pivot device, and it includes:

One rotating shaft;

One rotation ratchet, its axial side is provided with ratchet, and rotating being set in the rotating shaft;

One fixed ratchet wheel, its axial side is provided with ratchet, and what fixed ratchet wheel was rotatable is set in the rotating shaft, its ratchet and be meshing with each other with the ratchet of rotation ratchet;

One pressure spring, it is set in the rotating shaft, and an end is butted on the axial opposite side of described fixed ratchet wheel;

One sleeve, it is provided with a group connecting part, and is formed with one vertically and cracks, and jacket casing is located on the described rotation ratchet;

One fixed plate, it is fixed in an end of rotating shaft, and is against on the other end of described pressure spring.

The structure of ratchet-type pivot device of the present utility model further can be:

Described rotating shaft one end is formed with the cross section and is a non-circular engaging section;

Described fixed ratchet wheel axially runs through the axis hole that is formed with the described rotating shaft engaging of cooperation section, and is located at this shaft hole sleeve on the engaging section of rotating shaft.

The structure of ratchet-type pivot device of the present utility model further can be again:

Described fixed ratchet wheel axially is being formed with a groove on the another side;

One end of described pressure spring is the groove inwall that is butted on described fixed ratchet wheel.

The structure of ratchet-type pivot device of the present utility model further also can be:

Be formed with a bizet in the described rotating shaft;

Described rotation ratchet is resisted against described bizet.

Described sleeve, its internal diameter is matched with the external diameter of described rotation ratchet, and it cracks adjacent to group connecting part, but and to be positioned at this group connecting part be that basic point is along the side on the direction of rotating in rotation ratchet relative fixed ratchet.

The utility model provides a kind of collapsible device in addition, it includes a body and a foot rest, it is characterized in that: further include above-mentioned ratchet-type pivot device, wherein this body is to interfix with rotating shaft, and foot rest to be group connecting part with sleeve interfix, but and the direction launched with respect to body of foot rest be to be same as the direction that rotation ratchet relative fixed ratchet rotates.

Ratchet-type pivot device of the present utility model, its rotating shaft and the group connecting part of sleeve be respectively with the collapsible device in can relative the rotation and be and open or two positions of folded position interfix, because set fixed ratchet wheel keeps being meshing with each other with ratchet with rotating the elastic force ejection that ratchet is a spring by compression, is only can be with respect to the fixed ratchet wheel one-way rotation with the rotation ratchet;

When but sleeve rotates on the direction that rotation ratchet relative fixed ratchet rotates, but driven rotary ratchet relative fixed ratchet rotates, and reach the purpose of multistage location on this sense of rotation by being engaged in of ratchet, otherwise, when sleeve during towards opposite spin, the rotation ratchet will be limited by fixed ratchet wheel and be and do not rotate, but owing to be formed with on the sleeve and crack, therefore sleeve diameter will slightly enlarge because of stressed, and sleeve can be rotated with respect to the rotation ratchet; Hence one can see that, is provided with the collapsible device of the utility model pivot device, can have the multistage locating function when opening, but and quick closedown after using.

Description of drawings

Fig. 1 partly has an X-rayed stereo appearance figure for the utility model.

Fig. 2 is a three-dimensional exploded view of the present utility model.

Fig. 3 is a sectional view of the present utility model.

Fig. 4 is the three-dimensional exploded view that is provided with the collapsible device of the utility model pivot device.

Fig. 5 is the part amplification view of Fig. 4.

Accompanying drawing primary clustering symbol description

(10) rotating shaft (11) bizet

(12) engaging section

(20) rotation ratchet (21) center hole

(22) ratchet

(30) fixed ratchet wheel (31) axis hole

(32) ratchet (33) groove

(40) pressure spring

(50) sleeve (51) group connecting part

(52) crack

(60) fixed plate

(72) foot rest (71) body

Embodiment

As shown in Figure 1 and Figure 2, ratchet-type pivot device of the present utility model, it includes a rotating shaft (10), a rotation ratchet (20), a fixed ratchet wheel (30), a pressure spring (40), a sleeve (50) and a fixed plate (60), wherein:

Be formed with a bizet (11) in this rotating shaft (10), and an end is formed with the cross section and is a non-circular engaging section (12);

As shown in Figure 3, axially running through of this rotation ratchet (20) is formed with a center hole (21), and be formed with ratchet (22) on the axial side, rotation ratchet (20) is set in the rotating shaft (10) so that this center hole (21) is rotating, and is resisted against described bizet (11).

This fixed ratchet wheel (30) is axially running through the axis hole (31) that is formed with the described rotating shaft of cooperation (10) engaging section (12), on an axial side, be formed with ratchet (32) in addition, and on axial another side, be formed with a groove (33), fixed ratchet wheel (30) is with on the not rotatable engaging section (12) that is sheathed on rotating shaft (10) of this axis hole (31), its ratchet (32) and with the rotation ratchet (20) ratchet (22) be meshing with each other, the external diameter of fixed ratchet wheel (30) can be less than described rotation ratchet (20);

This pressure spring (40) is set in the rotating shaft (10), and an end is butted on groove (33) inwall of described fixed ratchet wheel (30);

The internal diameter of this sleeve (50) is engaged in the external diameter of described rotation ratchet (20), sleeve (50) is provided with a group connecting part (51), be formed with in addition one crack (52) vertically, these crack (52) are adjacent to described group connecting part (51), and be positioned at this group connecting part (51) be basic point along in rotation ratchet (20) but the side on the direction that relative fixed ratchet (30) rotates, sleeve (50) is set on the described rotation ratchet (20);

This fixed plate (60) is fixed in an end of rotating shaft (10), and is butted on the other end of described pressure spring (40), makes this pressure spring (40) produce elastic force pushing and pressing fixed ratchet wheels (30) and keeps being meshing with each other with rotation ratchet (20).

As Fig. 4, shown in Figure 5, pivot device of the present utility model is to be used for being arranged on the collapsible device, this sentences a digital frame is example, its have a body (71) and relatively body (71) launch or the foot rest (72) of folding, this body (71) is to interfix in arbitrarily suitable mode with rotating shaft (10), and foot rest (72) be with the group connecting part (51) of sleeve (50) with arbitrarily suitably mode interfix, and the expansion direction of foot rest (72) is with rotation ratchet (20) but the direction that relative fixed ratchet (30) rotates is identical;

When foot rest (72) from folded position when expansion direction rotates, because the internal diameter of sleeve (50) is matched with the external diameter of rotation ratchet (20), therefore just but driven rotary ratchet (20) relative fixed ratchet (30) rotates, in rotation ratchet (20) rotating process, fixed ratchet wheel (30) will be subjected to ratchet (22) pushing and pressing and along rotating shaft (10) axial displacement and oppress pressure spring (40), the elastic force effect of spring (40) by compression subsequently and with the rotation ratchet (20) engagement, be the purpose that can reach the multistage location with the cooperation by ratchet (22) (32), the angle that foot rest (72) is rotated between each section location can see through the number of ratchet (22) (32) quantity and adjust;

Otherwise, when sleeve (50) during towards opposite spin, owing to be formed with crack (52) on the sleeve (50), therefore sleeve (50) internal diameter will slightly enlarge because of stressed, even rotation ratchet (20) is limited by fixed ratchet wheel (30) and is and does not rotate, sleeve (50) also can rotate and reach the purpose that foot rest (72) is equivalent in body (71) with respect to rotation ratchet (20), and this amounts in the process owing to do not have a positioning action, so foot rest (72) can be equivalent in body (71) fast.

Claims

1. A ratchet type hub, characterized in that it comprises:

a rotating shaft;

A rotary ratchet, with ratchet teeth formed on one side of the axial side, and rotatably sleeved on the rotating shaft;

A fixed ratchet, with ratchet teeth formed on one side of the axial direction, the fixed ratchet is sheathed on the rotating shaft in a non-rotatable manner, and the ratchets of the fixed ratchet mesh with the ratchets of the rotating ratchet;

A compression spring, which is sleeved on the rotating shaft, and one end is against the other axial side of the fixed ratchet;

A sleeve, which is provided with a set of connecting parts, and a slit is formed in the axial direction, and the sleeve is sleeved on the rotating ratchet;

A fixing plate is fixed on one end of the rotating shaft and is against the other end of the compression spring.

2. The ratchet hub according to claim 1, wherein:

An engaging section with a non-circular cross section is formed at one end of the rotating shaft;

The fixed ratchet is axially formed with a shaft hole matching the engaging section of the rotating shaft, and the shaft hole is sheathed on the engaging section of the rotating shaft.

3. The ratchet hub according to claim 2, wherein:

A groove is formed on the other axial side of the fixed ratchet;

One end of the compression spring is against the inner wall of the groove of the fixed ratchet.

4. The ratchet hub according to any one of claims 1 to 3, wherein:

A crown is formed on the rotating shaft;

The rotating ratchet abuts against the crown.

5. The ratchet type hub according to claim 4, wherein the inner diameter of the sleeve is matched with the outer diameter of the rotating ratchet, and its slit is adjacent to the joint part, and is located at the joint part The base point is along one side in the direction in which the rotating ratchet can rotate relative to the fixed ratchet.

6. A foldable device comprising a body and a tripod, characterized in that:

It further includes at least the ratchet-type hinge according to any one of claims 1 to 5, wherein the body is fixed to the rotating shaft, and the foot frame is fixed to the assembly part of the sleeve, and the foot frame is relatively to the body The direction of unfolding is the same as the direction in which the rotating ratchet can rotate relative to the fixed ratchet. the