CN2170404Y

CN2170404Y - Improved pivot

Info

Publication number: CN2170404Y
Application number: CN 93240318
Authority: CN
Inventors: 陈桂榕
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-09-28
Filing date: 1993-09-28
Publication date: 1994-06-29
Anticipated expiration: 2003-09-28

Abstract

The utility model relates to an improved pivot. Shaped shims, a supporting frame and a shaft sleeve are in sequence sheathed on a rotating shaft by passing through the rotating shaft and are locked together by a latch nut; the shaped shims on the two sides of the supporting frame are respectively provided with a supporting surface structure with waved cross sections; a disk shaped spring lamination is concave cramp disk shaped and is sheathed on the cylindrical section of the shaft sleeve back to back; a positioning piece is clamped and sheathed with the part of clamping surface of the shaft sleeve. Because the disk shaped spring lamination has larger variable elasticity, axial regulation is also convenient, though the utility model is worn out and the effect of long-term use is achieved; the shaped shims with waved cross sections can prevent the jointing face of the supporting frame from adhering; simultaneously, the utility model has the function that rotation effect is not influenced in the condition that frictional moment is ensured.

Description

Improved pivot

The utility model relates to a kind of connection member, particularly a kind of improvement type pivot that is used for being rotatably connected.

Present superminicomputer and some miniature precision instruments have small and exquisite, portable characteristics, for the damage that prevents in the process of carrying and the thing that collides with or drop in on-the-spot the use causes, generally to add a cover plate 2, the housing of cover plate 2 and main frame is buckle closure mutually, referring to Fig. 1, an articulation pivot 3 is arranged between main frame 1 and cover plate 2.Fig. 2 is the structure enlarged view of pivot 3 shown in Figure 1, the intrinsic positioning ring piece 32 of cover in rotating shaft 31, positioning ring piece 32 radially evagination has an engaging positioning part 320, in rotating shaft 31, be set with a spring 33, one fixing bolster 30 is arranged on the spring 33 1 side rotating shaft sections, under normal conditions its rotating shaft 31 because of the end of spring 33 respectively with the crotch portion of fixing bolster 30 and engaging positioning part 320 block mutually, the crotch portion that adds fixing bolster 30 with engage between the positioning part 320 solid to having one to rotate spacious angle, therefore, cover plate 2 can be buckled embedding mutually with main frame 1, and, positioning part 320 is subjected to turning round of spring 33 and dials when mutual button embedding, so when opening buckle closure, dial down turning round of spring 33, rotating shaft 31 can be upspring automatically and buckle closure 2 is opened.

The deficiency of this pivot is: it has only two positions of upper and lower, and promptly complete opening or closed fully can not be done stop, so its open degree can not be controlled on arbitrary enable possition.

That shown in Figure 3 is a kind of STRUCTURE DECOMPOSITION figure of pivot of may command open degree.It has a fixing frame 40 that has perforation 400, circumferentially offer oil groove 402 in perforation 400, the cylindrical section 420 of one rotating shaft 42 is worn and is placed in the perforation 400, respectively have one to wear the pad of putting 41 with rotating shaft 42 in vertical plate face 401 both sides of fixing frame 40, on outside pad 41 outside rotating shaft sections, wear and be placed with plural number butterfly shell fragment 43, outermost butterfly shell fragment 43 outsides have one with the be nested positioning block 44 of card of the flat part 421 of rotating shaft 42, locknut 45 is with the stubborn mutually company of flat part 421 and with butterfly shell fragment 43, pad 41 and positioning block 44 axial compression.Rely on the friction torque of shell fragment 43 generations during the pivot of this structure uses in the early stage and produce positioning action at any angle, but increase along with service time and number of times, then cause loosening mutually between each friction member because of abrasion, it is less to add butterfly shell fragment 43 elastic deformation amounts, the gap that is not enough to remedy abrasion and causes, therefore, after use a period of time, then cause and arbitrarily to open location defect.

In addition: with the cylindrical section 420 of rotating shaft 42 mutually the grease in the perforation 400 of fit be difficult for keeping, very easy stream is seeped on two flat pad 41 that are adjacent, thereby causes bondingly, influences rotating effect, especially easily produces dry friction.

The purpose of this utility model just is to overcome the above-mentioned shortcoming and defect of existing in prior technology, both can arbitrarily locate and provide a kind of, has the improvement type pivot than the long life again.

The purpose of this utility model is to realize by following technological scheme: a rotating shaft wears profiled spacer, bearing support and axle sleeve successively on it and by the locknut lock and is close together, the profiled spacer of bearing support both sides is the ramuscule bearing surface structure in wavy cross section, the dish type shell fragment is for recessed button plate-like and on the cylindrical section that is mounted on axle sleeve, location piece with engage position, plane cutting ferrule mutually having of axle sleeve.Because the dish type shell fragment has bigger bullet variable, therefore, even also be convenient to axial adjustment after the abrasion, to reach the effect of long-term use, the abnormity in wavy cross section expands pad can prevent and the applying of bearing support joint surface simultaneously, also have the effect that does not influence rotation under the prerequisite that guarantees friction torque.

Therefore: remarkable result of the present utility model is:

First: because dish type shell fragment and profiled spacer all have bigger deformation projections part, therefore, after leaning on, lock can produce bigger bullet variable force, this power can make and produce big friction torque between each adjacent rotated part, under arbitrary opening angle, all can reliably locate guaranteeing, in addition, because each part frictional contact surface is the little surface of contact of wire loop shape, so can guarantee under the prerequisite of location, to have the advantages that to be convenient to rotate.

Second: the setting of dish type shell fragment and wavy profiled spacer moderate finite deformation protruding part, both can be at lock by having produced bigger bullet variable force under the situation, can remedy the problem that the bullet variable force that causes because of abrasion reduces again, especially it axially has very big adjusting surplus, be to remedy the gap that causes because of abrasion to increase the problem that caused friction torque reduces, can improve working life.

Concrete structure of the present utility model is realized by the following examples and accompanying drawing thereof:

Fig. 1 is the profile schematic representation that existing pivot is used for microcomputer.

Fig. 2 is the structure enlarged view of pivot among Fig. 1.

Fig. 3 is the exploded view of the another kind of structure of existing pivot.

Fig. 4 is STRUCTURE DECOMPOSITION figure of the present utility model.

Fig. 5 is the section of structure of this pass after with novel combination.

Fig. 6 is the structural profile enlarged view of upper half part among Fig. 5.

Below in conjunction with accompanying drawing 4-6 concrete structure of the present utility model is described in detail:

The utility model has a bearing support 40, be provided with pad 41 in bearing support 40 both sides, rotating shaft 42 activities are passed vertical plate 401 its front threads sections 422 of back of pad 41 and bearing support 40 and are closed with locknut 45 is stubborn mutually, between locknut 45 and pad 41, be provided with a plurality of spring sheets 43, it is characterized in that: rotating shaft 42 leading portions are the cylindrical section of stepped change diameter, one side of pad 41 is the wave outer gibbosity, wave outer gibbosity pad 41 1 sides of bearing support 40 1 sides have one with the rotating shaft cylindrical section axle sleeve 46 of suit mutually, be set with on the cylindrical section 463 of axle sleeve 46 in twos back to the button plate-like spring sheet of placing 43, engaging section 462 on the cylindrical section 463 of one positioning ring 47 that has planar surface portion 4701 endoporus 470 and axle sleeve 46 is cutting ferrule mutually, axle sleeve 46, each detains plate-like spring sheet 43 and positioning ring 47 threes locate vertically by sticking together.Referring to Fig. 4 and Fig. 5.

Structure characteristic of the present utility model also is:

The cylinder with large diameter section 422 of rotating shaft 42 is by being attached to V-shaped wavy pad 41 outsides, on the cylindrical section 420 adjacent of rotating shaft 42, offer the oilhole 4201 of perforation with cylinder with large diameter section 422, circular hole 403 and wavy pad 41 movable sets of two V-arrangements on cylindrical section 420 and the L shaped bearing support 40 vertical sections 401, adjacent with cylindrical section 420 is one with the axle sleeve 46 not isometrical threaded cylindrical section 423 of suit mutually, being set with on the cylindrical section 463 of axle sleeve 46 and interlocking folded in twos and back to button plate-like spring sheet 43 by putting, the cylindrical section 463 leading portions week side of axle sleeve 46 has a recessed engaging platform part 462, have planar surface portion 4701 endoporus 470 positioning ring 47 with engage platform part 462 be nested card and circumferential location, locknut 45 is twisted on the thread section of the rotating shaft 42 that leans against positioning ring 47 outsides, and the protruding dish portion 461 of axle sleeve 46 and the wavy pad 41 of V-arrangement are mutually by subsides.Referring to Fig. 4 to Fig. 6

The vertical board 401 1 sides closing mutually of one smaller diameter end in the wavy pad 41 of two V-arrangements and L shaped bearing support 40, protruding dish portion 461 outerplanars of the smaller diameter end of another pad 41 and axle sleeve 46 are mutually by pasting, the lug boss of the folded button plate-like spring sheet 43 of button leans against reverse placement mutually in twos, in twos the major diameter buckling surface of the folded button plate-like spring sheet 43 of button respectively with protruding dish portion's 461 inner ring surfaces of axle sleeve 46 and the outer ring surface closing of positioning ring 47.Referring to Fig. 4 to Fig. 6

The axial length of the cylindrical section 420 of rotating shaft 42 is put the summation of vertical board 401 three's thickness of wavy pad 41 of two V-arrangements on it and L shaped bearing support 40 less than cover.Referring to Fig. 5

The axial length of the cylindrical section 463 of axle sleeve 46 is less than the summation of the thickness of respectively buckleing plate-like spring sheet 43 and positioning ring 47 of suit on it.Referring to Fig. 5

The smaller diameter end 410 of the wavy pad 41 of V-arrangement is pointed, and its larger diameter end 411 sides have concave ring groove 4110 in the V-arrangement, and its endoporus 412 is taper hole, and spring sheet 43 outer surfaces and the endoporus of button plate-like all are taper.Referring to Fig. 6

Working principle of the present utility model is identical with existing pivot shown in Figure 3.

Claims

1, a kind of improvement type pivot, one bearing support (40) is arranged, be provided with pad (41) in bearing support (40) both sides, rotating shaft (42) activity is passed its front threads section (422) of vertical plate (401) back of pad (41) and bearing support (40) and is closed with locknut (45) is stubborn mutually, between locknut (45) and pad (41), be provided with a plurality of spring sheets (43), it is characterized in that: rotating shaft (42) leading portion is the cylindrical section of stepped change diameter, one side of pad (41) is the wave outer gibbosity, wave outer gibbosity pad (41) one sides of bearing support (40) one sides have one with the rotating shaft cylindrical section axle sleeve of suit (46) mutually, be set with on the cylindrical section (463) of axle sleeve (46) in twos back to the button plate-like spring sheet of placing (43), engaging section (462) on the cylindrical section (463) of one positioning ring (47) that has planar surface portion (a 4701) endoporus (470) and axle sleeve (46) is cutting ferrule mutually, axle sleeve (46), each detains plate-like spring sheet (43) and positioning ring (47) three locatees vertically by sticking together.

2, by the described a kind of improvement type pivot of claim 1, it is characterized in that: the cylinder with large diameter section (422) of rotating shaft (42) is by being attached to V-shaped wavy pad (41) outside, on the cylindrical section (420) adjacent of rotating shaft (42), offer the oilhole (4201) of perforation with cylinder with large diameter section (422), circular hole (403) and the wavy pad of two V-arrangements (41) movable set on the vertical section of cylindrical section (420) and L shaped bearing support (40) (401), adjacent with cylindrical section (420) is one with axle sleeve (46) the not isometrical threaded cylindrical section (423) of suit mutually, being set with on the cylindrical section (463) of axle sleeve (46) and interlocking folded in twos and back to button plate-like spring sheet (43) by putting, cylindrical section (463) the leading portion week side of axle sleeve (46) has a recessed engaging platform part (462), have planar surface portion (4701) endoporus (470) positioning ring (47) with engage platform part (462) be nested card and circumferential location, locknut (45) is twisted on the thread section of the rotating shaft (42) lean against positioning ring (47) outside, and the protruding dish portion (461) of axle sleeve (46) and the wavy pad of V-arrangement (41) are mutually by subsides.

3, by claim 1 or 2 described a kind of improvement type pivots, it is characterized in that: one smaller diameter end in the wavy pad of two V-arrangements (41) and (401) the one side closings mutually of the vertical board of L shaped bearing support (40), protruding dish portion (461) outerplanar of the smaller diameter end of another pad (41) and axle sleeve (46) is mutually by pasting, the lug boss of the folded button plate-like spring sheet (43) of button leans against reverse placement mutually in twos, in twos the major diameter buckling surface of the folded button plate-like spring sheet (43) of button respectively with protruding dish portion's (461) inner ring surface of axle sleeve (46) and the outer ring surface closing of positioning ring (47).

4, by claim 1 or 2 described a kind of improvement type pivots, it is characterized in that: the axial length of the cylindrical section (420) of rotating shaft (42) is put the summation of vertical board (401) three's thickness of wavy pad of two V-arrangements (41) on it and L shaped bearing support (40) less than cover.

5, by claim 1 or 2 described a kind of improvement type pivots, it is characterized in that: the axial length of the cylindrical section (463) of axle sleeve (46) is less than the summation of the thickness of respectively buckleing plate-like spring sheet (43) and positioning ring (47) of suit on it.

6, by claim 1 or 2 described a kind of improvement type pivots, it is characterized in that: the smaller diameter end (410) of the wavy pad of V-arrangement (41) is pointed, its larger diameter end (411) side has concave ring groove (4110) in the V-arrangement, its endoporus (412) is taper hole, and spring sheet (43) outer surface and the endoporus of button plate-like all are taper.