CN201297332Y

CN201297332Y - Anti-loosening structure of pivoting device

Info

Publication number: CN201297332Y
Application number: CNU2008201764578U
Authority: CN
Inventors: 林清雄
Original assignee: CHANGDE Co Ltd
Current assignee: CHANGDE Co Ltd
Priority date: 2008-12-03
Filing date: 2008-12-03
Publication date: 2009-08-26
Anticipated expiration: 2018-12-03

Abstract

The utility model provides an anti-loosening structure of a pivoting device. An insertion slot is arranged on one end of the thread part of a rotary shaft, both sides of the insertion slot are respectively provided with a ditch, and an inserted pin is arranged in the insertion slot. In assemblage, each member sequentially passes through the rotary shaft to be arranged, the tail end of the rotary shaft is fixedly locked by a nut, the inserted pin is inserted into the insertion slot, and the thread part can be outwardly strutted to fixedly clamp the nut to achieve the purpose of preventing the nut from loosening.

Description

A kind of anti-loose structure of pivot device

Technical field

The utility model relates to the pivot device field that is applied to electronic product, relates in particular to a kind of utilization and is expanded in the screw section of roller end and strut, to prevent the anti-loose structure of the pivot device that nut gets loose.

Background technique

Our common pivot device that is used for electronic product, as being connected in screen with between body, so that screen and the body person of relatively rotating, and can reach purposes such as opening use or folding storage.

See also shown in Figure 1ly, general pivot device 1 is made up of a rotating shaft 11, a support 12, a banking stop 13, a location piece 14, a cam 15 and an elastic element 16.Described rotating shaft 11 1 ends are provided with a fixing part 111 that is used for being arranged at electronic product screen lateral margin, the other end is equipped with support 12, banking stop 13, location piece 14, cam 15 and elastic element 16 in regular turn, be mounted on the screw section 112 of described rotating shaft 11 again with a nut 113, support 12 wherein is located at the body lateral margin of electronic product; During action,, replace cam 15 and location piece 14 mutual closings, and then utilize the angle design of cam 15 and location piece 14 approximal surfaces, produce appropriate torsion output and support screen and keep effects such as renovating feel by the elastic force of elastic element 16.

Yet, during pivot device 1 assembling, elastic element 16 must have suitable precompressed amount, could produce enough elastic force, described precompressed amount is to decide from the position that nut 113 is screwed together in rotating shaft 11 screw sections 112, but when using, reciprocating extrusion when elastic element 16 is subjected to cam 15 with location piece 14 actions, relatively also can force elastic element 16 to push to opposite side (being exactly the direction of nut), because the screw thread of

nut

113 and 112 of the screw sections of rotating shaft 11 are provided with suitable gap, therefore nut 113 is understood backward rotation and is outwards moved, even causing the problem that gets loose, this problem can change the precompressed amount of elastic element 16, reduces the torsion output of pivot device 1, feel in the time of not only can influencing the user and operate, even might cause screen because of can't effectively locating the damage that is caused.

The utility model people in view of this, utilize to reduce the gap between the screw thread of rotating shaft screw section and nut, so that the mode that nut is difficult for getting loose, designed a kind of anti-loose structure of nut of rotating shaft special use especially, and increase working life of pivot device, and the torsion output stability when guaranteeing to use.

Summary of the invention

Main purpose of the present utility model is to provide a kind of anti-loose structure of pivot device that prevents that nut from getting loose, the steadiness when using to increase pivot device.

For reaching above-mentioned purpose, the utility model mainly is provided with a slot at the end that the rotating shaft correspondence is provided with the screw section, each axially cuts open and is provided with a trench digging along not helicoid two sides in described slot both sides, can be provided with a latch in the described slot, the slightly larger in diameter of described latch is in the diameter of described slot, after latch inserts slot, trench digging slightly can be strutted, and terminal screw section is slightly outwards strutted.

Compared with prior art, the anti-loose structure of pivot device described in the utility model, when each member (as: support, banking stop, location piece, cam and elastic element etc.) is arranged in the rotating shaft in regular turn, and be screwed together in nut on the screw section of rotating shaft, at this moment, again latch is forced in the slot, make the slot of rotating shaft end be subjected to latch extruding and after the volumetric expansion, the outside both sides that can will have the screw section strut, make the screw thread and the gap smaller between the rotating shaft screw section even very close to each other of nut, reach the purpose that prevents that nut from getting loose so nut can't oppositely produce.

Description of drawings

Fig. 1 is the structural representation of existing pivot device;

Fig. 2 is the three-dimensional exploded view of the utility model preferred embodiment;

Fig. 3 is the three-dimensional combination figure of the utility model preferred embodiment;

Schematic representation () when Fig. 4 uses for the utility model preferred embodiment;

Schematic representation (two) when Fig. 5 uses for the utility model preferred embodiment.

Description of reference numerals: existing: the 1-pivot device; The 11-rotating shaft; The 111-fixing part; The 112-screw section; The 113-nut; The 12-support; The 13-banking stop; The 14-location piece; The 15-cam; The 16-elastic element; The utility model: 2-rotating shaft; The 21-fixing part; The 22-cambered surface; The 23-screw section; The 24-slot; 241-in-line groove; The 25-trench digging; The 26-planar surface portion; The 27-protecting cover; The 271-round plate; The 272-fixture block; The 3-nut; The 31-screw thread; The 4-latch; The 5-support; The 6-banking stop; The 7-location piece; The 8-cam; The 9-elastic element.

Embodiment

Understand content of the present utility model for your auditor can be known, the accompanying drawing of only arranging in pairs or groups in the following instructions please be consulted.

See also Fig. 2-shown in Figure 5, the structure of preferred embodiment of the present utility model includes:

One rotating shaft 2, the one end is provided with a fixing part 21, in order to be fixedly arranged on the electronic product, described rotating shaft 2 the other end are two D type cylinders, be respectively equipped with a screw section 23 on two cambered surfaces 22 wherein, a nut 3 is established in order to spiral shell in described screw section 23, and the end face central authorities in the end with screw section 23 are provided with a columniform slot 24, described slot 24 axially cuts open and is provided with at least one pair of trench digging 25, described trench digging 25 is not had two planar surface portion 26 of screw section 23 towards rotating shaft 2 respectively and is axially cutd open and establish, therefore see it by the end face of rotating shaft, it is circular in-line groove 241 that slot 24 forms central authorities with trench digging 25; Moreover, can be provided with a protecting cover 27 in the described in-line groove 241, and protecting cover 27 is provided with a round plate 271, convex with the fixture block 272 of in-line again in the one side of round plate 271, in order to be arranged in the aforesaid in-line groove 241, not only increase the aesthetic property of the end face of rotating shaft the other end, the effect that prevents that latch 4 from deviating from is also arranged.

One cylinder plugs 4 is located in the slot 24, and the slightly larger in diameter of described latch 4 after described latch 4 is forced into slot 24, can strut and make the screw section 23 of end outwards to strut to two outsides trench digging 25 in the diameter of described slot 24.

During assembling, as Fig. 2, shown in Figure 3, in rotating shaft 2, be arranged with support 5 in regular turn, banking stop 6, location piece 7, members such as cam 8 and elastic element 9, screw togather the end that is fixed in rotating shaft 2 with nut 3 again, finish the combination of pivot device, wherein, the screw thread 31 of nut 3 utilizations itself is screwed together on the screw section 23 of rotating shaft 2, originally the screw thread 31 of

nut

3 and 23 of the screw sections of rotating shaft 2 are provided with suitable gap, so nut 3 could rotate on the screw section 23 of rotating shaft 2, therefore working as latch 4 is forced in the slot 24 (as Fig. 4, shown in Figure 5), make the slot 24 of rotating shaft 2 ends be subjected to latch 4 extruding and after the volumetric expansion, can will have the part of screw section 23 outwards strut along the both sides of trench digging 25, make the gap smaller of 23 of the screw thread 31 of nut 3 and rotating shaft 2 screw sections, even become very close to each other, so nut 3 can't oppositely produce and reach the purpose that prevents that nut 3 from getting loose, and makes pivot device more firm in use.

As mentioned above, as Fig. 2-shown in Figure 5, the utility model will have following advantage when implementing:

After latch 4 of the present utility model is forced into the slot 24 of rotating shaft 2, the screw section 23 of rotating shaft 2 is strutted, to reach the purpose that prevents that nut 3 from getting loose.

Moreover, owing to also can be provided with a protecting cover 27 in the slot of the present utility model 24, and the end face complete closed of rotating shaft 2 can be increased aesthetic property.

And latch 4 of the present utility model can be combined into one with the fixture block 272 of protecting cover 27, and has fixing and effect attractive in appearance concurrently.

But the above is preferred embodiment of the present utility model only, is not in order to limiting the scope that the utility model is implemented, other as: whether the setting of protecting cover to be, or the transition regimes such as shape of slot and trench digging, also all among the category of this case; Therefore those of ordinary skills have done equivalence or variation person easily, cylindrical pocket is changed into the slot (as: rectangle or triangle etc.) of other geometrical shapies etc., not breaking away from the equalization variation of being done under spirit of the present utility model and the scope and modification, all should be covered by in the claim of the present utility model.

In sum, the anti-loose structure of pivot device of the present utility model has the model utility of patent, and to the value of industry; The claimant mentions the application of novel patent according to the regulation of Patent Law to an ancient unit of weight office.

Claims

1, a kind of anti-loose structure of pivot device is characterized in that it comprises:

One rotating shaft, the one end is provided with a fixing part, is respectively equipped with a screw section on two cambered surfaces of the other end, and a nut is established in order to spiral shell in described screw section, the end face central authorities that described rotating shaft has the end of screw section are provided with a slot, and described slot axially cuts open and is provided with at least one pair of trench digging;

One latch, its diameter be greater than the diameter of described slot, and it is located in the slot and the screw section of described rotating shaft end is strutted.

2, the anti-loose structure of pivot device as claimed in claim 1 is characterized in that, the other end of described rotating shaft is two D type cylinders, and is respectively equipped with a screw section on two cambered surfaces.

3, the anti-loose structure of pivot device as claimed in claim 1 is characterized in that, described slot is not had two planes of screw section towards described rotating shaft respectively, and each axially cuts open and establishes a pair of trench digging.

4, the anti-loose structure of pivot device as claimed in claim 3 is characterized in that, described slot and described trench digging form central authorities for circular in-line groove, are provided with a protecting cover in the described groove.

5, the anti-loose structure of pivot device as claimed in claim 4 is characterized in that, described protecting cover is provided with a round plate, and described round plate simultaneously convexes with the fixture block of in-line, and described fixture block is in order to be arranged in the described in-line groove.

6, the anti-loose structure of pivot device as claimed in claim 4 is characterized in that, described protecting cover is provided with a round plate, and described round plate simultaneously convexes with a cylinder plugs, and described cylinder plugs is fixedly arranged in the described slot in order to be forced into.

7, the anti-loose structure of pivot device as claimed in claim 1 is characterized in that, the cylindrical groove of described slot, and described latch is cylindrical.