CN202468690U

CN202468690U - Pivoting device

Info

Publication number: CN202468690U
Application number: CN201120523113.1U
Authority: CN
Inventors: 李茂生; 林瑞昌
Original assignee: JINGGONG MOTOR CO Ltd
Current assignee: JINGGONG MOTOR CO Ltd
Priority date: 2011-12-09
Filing date: 2011-12-14
Publication date: 2012-10-03
Anticipated expiration: 2021-12-14
Also published as: TW201323737A; TWI447311B

Abstract

The utility model relates to a pivoting device which comprises a base. An accommodating space is formed in the base, a buffer block is arranged in the accommodating space, a rack plate penetrates into the base, a pressing part is formed on the upper edge of the rack plate and is positioned in the accommodating space of the base, and the acting surface of the top end of the pressing part can be contacted with the buffer block. According to the utility model, the damper is arranged in the pivoting device and can be used for buffering the strong impact force when the pivoting device opens and rotates to the terminal so as to buffer the vibration, reduce the repeated impact time of the pivoting device, and prevent the object fixedly connected with the pivoting device from being repeatedly impacted and damaged when the pivoting device opens.

Description

Pivot joint

Technical field

The utility model is a kind of pivot joint, refers to a kind of being applied in the pivot joint especially, the damping structure of the terminal block when opening as pivot joint.

Background technique

Known pivot joint system as pivot joint door-plate are provided with the hinge that can raise cover plate in the door knob on the doorframe, on the plane, or on the vehicle body of locomotive, articulate the hinge of liftable seat cushion, that is; The setting of pivot joint; One object, one end can be hubbed on the fixture by pivot joint, and can use the hand-motion object, make this object can on fixture, rotate an angle; And the restriction that it rotates to the terminal block is the maximum angle that object institute can turn-off.

In the above-mentioned pivot joint, be applied on the vehicle body of locomotive, and can be used for opening and closing the hinge of seat cushion; In the seat cushion that is designed in recent years upwards to raise automatically rapidly can be in release the time; It lies in a torque spring is set in the pivot joint, when making seat cushion be button knot state in closing, can reverse this torque spring in advance; And when release discharges button knot state; Seat cushion can utilize the restoring force that reverses of torque spring, it is upwards raised automatically, so can reach the practical effect of within easy reach seat cushion below material-putting space article.

And because the torsion that torque spring reverses in advance, when opening seat cushion in user's parking and with the key release, the strength that the torsion that seat cushion utilizes torque spring to reverse is in advance upwards raised; System is designed to be enough to make the seat cushion forward to be opened into the maximum angle of raising, thus, and when often causing the seat cushion pivot end to raise the terminal to maximum rotating distance; Can directly impact pivot joint position in vehicle body and hinge, and the angle of after colliding, oppositely rebounding again, this moment, the torsion of torque spring contended with it again; And, make the seat cushion terminal impact vehicle body once more again towards the push-jump seat cushion of forward, so pass through the reciprocally swinging and the impact of number bout; And up to the kinetic energy of upwards raising, consume gradually after the impact for vehicle body, the seat cushion of upwards raising is died away and stop at maximum and raise the position; And since now the vehicle body of locomotive be mostly the plastic casing structure, itself and the combination of the location of seat cushion pivot joint, fixed time in the location of set screw and nut; Seat cushion is upwards raised and because of the torque spring effect, is made seat cushion under the effect repeatedly of repeatedly impacting vehicle body, in the set screw and the nut holding position of pivot joint; Yi Yin is impacted by regular plural number for a long time and causes damage, therefore, how to absorb the impact of buffering; Impact number of times when opening to reduce seat cushion, the emphasis that is the present invention's design belongs to.

The model utility content

For improving the prior art problem, the present invention provides a kind of " pivot joint ", and it comprises one first conjunction, has a connecting part; The connecting part has an extension part, and a sleeve shape is formed on the extension part, and sleeve comprises axially spaced one first side and one second side along sleeve; Sleeve further comprises a periphery surface that is connected between first and second side, and along the extending axially but separate with second side of sleeve, sleeve further comprises by the draw-in groove that extend axially and extend to installing space of first side along sleeve an installing space by first side of sleeve; First conjunction comprises the abutment facing on the periphery surface that is formed on sleeve in addition, and abutment facing separates along the axial and draw-in groove of sleeve, and connecting part system will be fixedly arranged on one first object; With one second conjunction that first conjunction articulates, second conjunction comprises that one links wall, and by linking vertically extending one first end wall of wall two sides and one second end wall; The sleeve of first conjunction is between first and second end wall of second conjunction, and second conjunction is to rotate between enable possition and operating position relative to first conjunction, links wall system and will be fixedly arranged on one second object; Second object system is along with second conjunction pivots between enable possition and operating position together, and a spring has one first end and one second end; Spring system is installed in the installing space, and first end is sticked in the draw-in groove, and second end is near first side of sleeve; Be hubbed at the axostylus axostyle on the sleeve of first conjunction, axostylus axostyle comprise along sleeve axially extended one first section with one second section, second section comprises the non-circular end away from first section; First section of axostylus axostyle is and first end wall pivot joint of second conjunction that terminal system articulates with second end wall, and second conjunction is pivoted between enable possition and operating position around the axis that axostylus axostyle defines; Combine a ratchet with the end of axostylus axostyle, ratchet has a tooth portion that is made up of the unidirectional tooth of plural number, and tooth portion comprises an axially spaced first surface and the second surface along sleeve; The second surface of ratchet forms a projection; Ratchet system is positioned at the outside, first side of first conjunction, and second end of spring is resisted against on the projection, when ratchet during around the axis pivot of sleeve definition; Second end that is torsion spring makes it to produce elastic force; Be combined in the fixed block between the ratchet and second conjunction, fixed block comprises a bearing surface and a clamping face, forms a unidirectional latch on the clamping face; The bearing surface of fixed block is resisted against the binding wall of second conjunction, and the tooth portion of latch and ratchet is chimeric.

When ratchet during towards the backward rotation of the elasticity direction of second end of spring, system of tooth portion pushes fixed block open, makes the latch and the disengaging of tooth portion of fixed block.

When ratchet when the elasticity direction of second end of spring is rotated, tooth portion is the latch of snap fasteners, and fixed block firmly is combined between the tooth portion that links wall and ratchet.

When second conjunction is pivoted toward operating position by the enable possition, link wall system promotion bearing surface fixed block interlock ratchet is pivoted, and second end of torsion spring.

Wherein ratchet comprises and is formed on first surface one non-circular interlock hole, and the end system of axostylus axostyle combines with the interlock hole, and the part of end is positioned at outside the first surface.

When spindle rotation, the end of axostylus axostyle is that the interlock ratchet rotates together.

When second conjunction pivoted between unlatching and operating position, fixed block was that the interlock ratchet rotates together, and ratchet is that the interlock axostylus axostyle rotates together.

Its middle sleeve further comprises a conduit that is formed on first side; Conduit comprises axially spaced one first retaining wall and one second retaining wall around sleeve; Shape and form a projection near indentation, there between the pivoting part outer circumferential face of ratchet and the second surface, projection system is positioned at conduit.

When projection was posted by second retaining wall, second end of spring was in the nature of not reversed,

When projection pivoted away from second retaining wall near first retaining wall, second end system of spring was reversed and is produced elastic force, and projection is strong more the closer to the elastic force that the first retaining wall spring produces.

The state that ratchet design of the present invention makes spring do not reversed as yet just can be assembled down, and can significantly reduce the time that the dealer assembles pivot joint.Has damping when the design of end plug and interlock cover is rotated second conjunction in addition; And the manufacturer can see through the sheath body length that changes the interlock cover easily to be increased or reduces; Make damping oil with respect to the area of contact between interlock cover and the sleeve; Can control the damping that produces when the interlock cover pivots easily, the weight that is incorporated into the second different object on second conjunction with cooperation is done optimized adjustment.

Wherein first conjunction further comprises a mounting groove chamber that is formed on second side and separates with installing space; The mounting groove chamber has an internal ring wall; First conjunction comprises in addition and is formed on periphery surface and extends to second side and a short slot of mounting groove chamber; First section of axostylus axostyle comprises away from second section and becomes a head end of round bar shape; And a flat portion that supports that is formed on the non-round bar shape between head end and second section, first end wall pivot joint of the head end of axostylus axostyle and second conjunction, pivot joint further comprises:

One interlock cover is to be hubbed in the sleeve of first conjunction, and the interlock cover comprises one first wall and one second wall; And a card complex hole that is formed on non-circular hole shape on first wall, axostylus axostyle, the flat system of portion that supports combine with card complex hole; One end plug is second side that is installed in first conjunction, and end plug comprises a columnar socket tube; Have a space in the socket tube, socket tube has an inner ring surface and an outer ring surface that separates, and the internal diameter of inner ring surface is slightly less than the external diameter of interlock cover; Shape one protuberance on the outer ring surface of socket tube, it is indoor that the socket tube system of end plug is positioned at mounting groove, and protuberance and short slot are chimeric; The rotational that end plug can't be defined around sleeve, first section of axostylus axostyle are and end plug articulates, and the space that forms between anchor ring and the interlock cover outside the end plug is to be applied damping oil; Have rotating of damping relative to the generation of first conjunction when making the interlock cover, further make second conjunction produce rotation with damping by the axostylus axostyle interlock.

Wherein the interlock cover comprises a containing space that is formed on second wall and extends to card complex hole; End plug comprises the beam barrel with one of circular hole through hole by the end face extension in space; The surrounding wall external diameter that beam barrel has is slightly less than the internal diameter of containing space, and first section of axostylus axostyle is to articulate with through hole, and beam barrel system is positioned at containing space; And the system of the space between surrounding wall and the containing space will be applied damping oil, interlock is overlapped relative to the end plug generation have rotating of damping.

Wherein pivot joint further comprises a pedestal, is fixedly arranged on the binding wall of second conjunction, and pedestal comprises an interior edge face and an exterior edge face that separates; And one first end face that between inside and outside end face, extends, pedestal comprises a mounting groove that is formed on interior edge face, mounting groove has one first block face near first end face; The interior edge face system of pedestal is resisted against the binding wall of second conjunction, is incorporated into a frame plate of the mounting groove of pedestal slidably, and frame plate comprises an end and a pressure section that separates with end; Pressure section has an acting surface and an abutment facing, and pressure section is positioned at mounting groove and can slides, and terminal system is positioned at first end face outside; When second conjunction is positioned at the enable possition; The end of frame plate system is resisted against on the abutment facing of first conjunction, and when second conjunction is non-when being positioned at the enable possition, the end system of frame plate is away from abutment facing; One shock absorber; Between the mounting groove that system is installed in pedestal and the acting surface of frame plate, when second conjunction was positioned at the enable possition, the acting surface of frame plate was to compress shock absorber.

Its medium frame plate comprises a positive and back side; Pressure section system is formed on the front projectedly; Pressure section comprises the abutment facing between acting surface and end; Pedestal comprises one second end face that separates with first end face, and mounting groove comprises and be formed on a containing space that has first block face on the interior edge face that containing space comprises one second block face near second end face; Mounting groove comprises further by first block face and extends to first end face and extend to a slideway of interior edge face that frame plate system makes end be positioned at first end face outside through slideway.

When shock absorber was not compressed the generation resiliently deformable by frame plate, the abutment facing system of frame plate was posted by first block face.

When shock absorber was compressed the generation resiliently deformable by frame plate, the abutment facing system of frame plate broke away from first block face.

The pressure section of its medium frame plate comprises two recesses that extend to acting surface, makes acting surface be divided into three parts by each recess region.

The positioning part of pedestal and fixing part system location are arranged in the pivot joint; Like the hinge of locomotive body and seat cushion one end pivot joint, and before the pivot joint unlatching rotates to the terminal, can touch the frame plate bottom; Making spinning force see through frame plate upwards transmits; And let the acting surface of pressure section can upwards push buffer stopper second bearing surface, and be able to cushion pivot joint by this and open the impacts strength when rotating to the terminal, make the unlatching of pivot joint can be after the damper absorption of one-shot; Reduce the impact number of times of its reciprocally swinging, and behind one-shot, can reach the effect that tends towards stability rapidly.

Therefore, the present invention designs the impact force of available buffer pivot joint unlatching, and can reduce and impact number of times, to avoid suffering that with the fixed object of pivot joint repeated stock causes damage, so can reach the excellent effect that increases the service life.

Description of drawings

Fig. 1 is the three-dimensional exploded view of pivot joint of the present invention.

Figure 1A is the three-dimensional exploded view of damper of the present invention.

Figure 1B is the stereogram of damper of the present invention.

Fig. 2 is the three-dimensional combination figure of pivot joint of the present invention.

The sectional view of Fig. 3 for being got along 3-3 line among Fig. 2.

The sectional view of Fig. 4 for being got along 4-4 line among Fig. 3.

The sectional view of Fig. 5 for being got along 5-5 line among Fig. 3.

The sectional view of Fig. 6 for being got along 6-6 line among Fig. 3.

Fig. 7 is the plan view at Fig. 2.

The sectional view of Fig. 8 for being got along 8-8 line among Fig. 7.

The sectional view of Fig. 9 for being got along 9-9 line among Fig. 7.

Figure 10 ties up under Fig. 8 state the action sectional view that second conjunction is switched to operating position by the enable possition.

Figure 11 ties up to second conjunction under Fig. 9 state is moved to operating position by the enable possition action sectional view.

Figure 12 ties up to the action sectional view of second conjunction shown in Figure 9 buffer effect when being continued to pivot toward the end away from operating position by the enable possition.

[primary clustering symbol description]

10 pivot joints, 12 buffers, 52 springs

46 draw-in grooves, 54 first ends, 56 second ends

58 ratchets, 60 tooth portions, 62 first surfaces

64 second surfaces, 66 pivoting parts, 68 tanks

69 internal axle sleeves, 70 interlock holes, 72 breach

73 projections, 75 registration holes, 76 fixed holes

80 second conjunctions 82 link wall 84 first, second end walls

86 pivot holes, 90 lockholes, 92 first grooves

94 second grooves, 98 end faces, 122 fixed blocks

124 bearing surfaces, 126 clamping faces, 128 latches

130 first objects, 132 second objects, 141 first conjunctions

143 connecting parts, 145 extension parts, 147 joining holes

149 sleeves, 151 first sides, 152 recesses

153 second sides, 154 periphery surface, 155 installing spaces

Mounting groove chambers 157 159 spacing wall, 161 big footpath sections

163 path sections, 165 internal ring walls, 167 axis parts

169 axis holes, 170 positioning holes, 171 belled parts

173 shrinkage pools, 175 external annulus, 177 conduits

179 first retaining walls, 181 second retaining walls, 183 abutment facings

191 end plugs, 193 flanges, 195 socket tubes

197 spaces, 199 inner ring surfaces, 201 outer ring surfaces

203 beam barrels, 207 surrounding walls, 211 through holes

213 interlocks overlap 215 sheath bodies, 217 bulge loop circles

231 first walls, 233 second walls, 235 containing spaces

237 card complex holes, 239 annular grooves, 241 protuberances

303 first sections of 243 short slots, 301 axostylus axostyles

305 second section 306 flat portion that supports of 304 head ends

307 terminal 309 fasteners, 311 housings

313 inner side surfaces, 315 outer side surfaces, 317 tanks

318 madial walls, 319 axis holes, 323 pedestals

325 exterior edge faces, 327 interior edge faces 329 the 3rd end face

331 the 4th end faces, 333 first end faces, 335 second end faces

337 positioning parts, 338 mounting grooves, 339 slideways

351 holes, 353 containing spaces, 355 fixing parts

357 first block faces, 359 locating columns, 371 second block faces

373 frame plates, 375 positive 377 back sides

379 terminal 391 pressure sections, 392 recesses

393 acting surfaces, 395 shock absorbers, 397 first bearing surfaces

398 abutment facings, 399 second bearing surfaces

Embodiment

Below all graphic systems only be convenient to explain that the present invention instructs basically; In graphic will to the number of the assembly that constitutes preferred embodiment, position, relation, and the extension of size will have illustratedly, belong to industry technical ability reading and understand the relevant variation enforcement in instruction of the present invention back.In addition, after reading and understanding instruction of the present invention, cooperate specific strength, weight, intensity, the accurate dimension that reaches similar requirement and the change of dimension scale also to belong to industry technical ability.

Different graphic middle systems indicate identical or similar assembly with same numeral; Please understand in addition in the literary composition such as " first ", " second ", " the 3rd ", " the 4th ", " the 5th ", " the 6th ", " on ", D score, " preceding ", " back ", " interior ", " outward ", " end ", " portion ", " section ", " vertically ", " outwards ", " width ", " length ", " on every side ", " side ", " axially " or the like and similarly only be convenient in person's reference drawing with the aid of pictures structure and only be used for helping to describe the present invention with the family of languages.

Pivot joint 10 comprised one first conjunction 141 shown in foundation was graphic; As shown in Figure 1; First conjunction 141 has a connecting part 143; Connecting part 143 comprises that an arc extension part 145, one arch sleeves 149 are formed on the extension part 145, and sleeve 149 comprises axially spaced first and second side 151,153 along sleeve 149; First side 151 of sleeve 149 separates along the side axial and extension part 145 of sleeve 149; Second side 1 53 along sleeve 149 axially and the another side of extension part 145 separate, make sleeve 149 between the two side faces of extension part 145, sleeve 149 further comprises and is connected first and second side 151, the periphery surface 154 between 153.Form in sleeve 149 periphery surface 154 and to extend to two relative short slots 243 of second side 153; One installing space 155 is by first side 151 of sleeve 149 extending axially but separate with second side 153 along sleeve 149; Mounting groove chamber 157 with an internal ring wall 165 is by second side 153 extending axially but separate with installing space 155 along sleeve 149; Make first and second room 155, form a spacing wall 159 between 157; Spacing wall 159 towards the surface of installing space 155 along an axis part 167 that extends axially and separate with first side 151 of sleeve 149; Axis part 167 has by end face along an axis hole 169 that extends spacing wall 159 circular hole; Installing space 155 comprises near first side 151 and the bigger big footpath section 161 of internal diameter in addition, and away from first side 151 and the less path section 163 (as shown in Figure 3) of internal diameter.One draw-in groove 46 is by first side 151 extending axially to spacing wall 159 along sleeve 149; Sleeve 149 comprises a C shape conduit 177 of being stretched along the axially edge of sleeve 149 by first side 151 in addition; Conduit 177 comprises one first retaining wall 179 and one second retaining wall 181 that separates along the circumferencial direction of the axis of sleeve 149, the angle about 170 that first and second retaining wall 179,181 separates along the circumferencial direction of the axis of sleeve 149 definition.First conjunction 141 has an abutment facing 183; Abutment facing 183 along the axial circumferencial direction of sleeve 149 between the draw-in groove 46 and second retaining wall 181; Sleeve 149 more comprises a recess 152 that is extended through draw-in groove 46 by abutment facing 183 along the axial circumferencial direction of sleeve 149; The connecting part 143 of first conjunction 141 is provided with plural joining hole 147, and the connecting part 143 that makes first conjunction 141 is passed joining hole 147 respectively with screw and is locked in such as on one first object 130 of the vehicle frame of motorcycle (as shown in Figure 8).

Pivot joint 10 shown in foundation is graphic comprises the interlock cover 213 that is arranged in the sleeve mounting groove chambers 157 149 again; Interlock cover 213 has the bulge loop circle 217 that external diameter is slightly less than sleeve mounting groove chambers 149 157 openings; And external diameter is less than a sheath body 215 of bulge loop circle 217 pipe shapes; Make interlock cover 213 districts be separated out one first wall 231 that is positioned at bulge loop circle 217 terminal surfaces and one second wall 233 that is positioned at sheath body 215 terminal surfaces; Axially form a recessed containing space 235 by second wall 233 along sleeve 149, and axially form a card complex hole 237 that extends to containing space 235 non-circular hole shapes by first wall 231 along sleeve 149, contiguous bulge loop circle 217 places, sheath body 215 surfaces form an annular groove 239; Interlock cover 213 is inserted in the mounting groove chamber 157 of sleeve 149, and first wall 231 of interlock cover 213 abuts in spacing wall 159 sides.

Pivot joint 10 more comprised an end plug 191 that is hubbed on the sleeve 149 shown in foundation was graphic; End plug 191 has the flange 193 of external diameter greater than mounting groove chamber 157 openings of sleeve 149; End plug 191 further comprises by flange 193 1 side surfaces along the columnar socket tube 195 of extending axially of sleeve 149; Has a space 197 in the socket tube 195; Socket tube 195 has an inner ring surface 199 and an outer ring surface 201 that separates, and socket tube 195 external diameters are slightly less than footpath within the mounting groove chamber 157 of sleeve 149, on the outer ring surface 201 of socket tube 195, forms two relative protuberances 241; End plug 191 also comprises by flange 193 1 side surfaces and is positioned at the axially extended beam barrel 203 of space 197 along sleeve 149, and beam barrel 203 along the axial length of sleeve 149 less than socket tube 195.In beam barrel 203, have the through hole 211 of a circle, beam barrel 203 further comprises a surrounding wall 207 that separates with through hole 211.Socket tube 195 inner ring surfaces 199 internal diameters of end plug 191 are greater than sheath body 215 external diameters of interlock cover 213; And beam barrel 203 peripheral wall 207 external diameters of end plug 191 make interlock cover 213 and end plug 191 can form the sheathed relatively combination of loose fit less than containing space 2 35 internal diameters of interlock cover 213.

Shown in graphic; End plug 191 is set in the mounting groove chamber 157 of sleeve 149; System is posted by second side 153 (as shown in Figure 3) of sleeve 149 hermetically with the flange 193 of end plug 191; And relative two protuberances 241 of end plug 191 insert in relative two short slots 243 of sleeve 149; End plug 191 can't be rotated relative to sleeve 149, and the socket tube 195 of end plug 191 is between the sheath body 215 of the internal ring wall 165 of the mounting groove chamber 157 of sleeve 149 and interlock cover 213, and beam barrel 203 stretching in the containing space 235 that interlock overlaps 213 sheath bodies 215 with loose fit.As shown in Figure 3; Beam barrel 203 forms a gap with containing space 235 inwalls, crack between second wall 233 and end plug 191 sides form and continue, and; Crack between one section of 199 formation of socket tube 195 inner ring surfaces of sheath body 215 surfaces of interlock cover 213 and end plug 191 continue; This gap also extends in the annular groove 239 of sheath body 215 1 sides, in this a succession of continuous gap, is packed into damping oil, and the stickiness of damping oil capable of using makes interlock cover 213 can have damping when rotating by this.

Pivot joint 10 comprised a spring 52 that is incorporated in first conjunction 141 shown in foundation was graphic, spring 52, and like Fig. 1, spring 52 comprises axially spaced one first end 54 and one second end 56 along sleeve 149.Spring 52 is placed in the path section 163 of installing space 155 of sleeve 149; First end 54 of spring 52 embeds in the draw-in groove 46 of sleeve 149; And spring 52 is socketed in (as shown in Figure 3) outside the axis part 167 near the part of first end 54, and second end 56 please notes near the installing space 155 and first side 151; Spring 52 is under the nature that first and

second end

54,56 is not reversed as yet, to be fit in the sleeve 149, so the time spring 52 do not produce elastic force (as shown in Figure 4) as yet.

Pivot joint 10 shown in foundation is graphic further comprises an axostylus axostyle 301 that articulates with first conjunction 141; As shown in Figure 1; Axostylus axostyle 301 comprise along sleeve 149 axially along one first section 303 and 1 second section 305 that stretches, and first section 303 external diameter is slightly larger than second section 305, wherein has the head end 304 of cross section for circle for first section 303; And the two flat portions 306 that support that are connected in the symmetrical side grain of head end 304 formation; Promptly the cross section of the part except head end 304 is all non-circularly on first section 303, and flatly support portion's 306 sectional shapes and interlock to overlap 213 card complex hole 237 shapes consistent, and; Have cross section non-circular one terminal 307 (round bar by having symmetrical side grain is constituted) for second section 305, and the cross section of second section 305 part except terminal 307 is all toroidal.Axostylus axostyle 301 is pivoted in the sleeve 149; System penetrates with second section 305 terminal 307 through hole 211 towards end plug 191, passes interlock and overlaps 213 card complex holes 237, and pass the axis hole 169 of axis part 167; And penetrate spring 52 and pass by sleeve 149 first sides 151; Make that the head end 304 of the circle of axostylus axostyle 301 is hubbed in end plug 191 through holes 211, the flat portion 306 that supports is arranged in card complex hole 237, and second section 305 circular position be hubbed in the axis hole 169, and second section 305 end 307 is positioned at promptly after passing spring 52 outside first side 151 of sleeve 149; At this moment; Axostylus axostyle 301 can rotate relative to sleeve 149, and with flat snap action of supporting portion 306 and card complex hole 237, rotates relative to end plug 191 together and can drive interlock cover 213 simultaneously; Owing to be full of damping oil between interlock cover 213 and the end plug 191, have the slow rotation of damping so axostylus axostyle 301 can produce with interlock cover 213.

Pivot joint 10 comprised a ratchet 58 that is hubbed on the sleeve 149 in addition shown in foundation was graphic; Ratchet 58 has a tooth portion 60 that is made up of the unidirectional tooth of plural number; The tooth portion 60 of ratchet 58 comprises an axially spaced first surface 62 and the second surface 64 along sleeve 149; One columnar pivoting part 66 is stretched along the axial edge of sleeve 14 9 by the second surface 64 of tooth portion 60; Pivoting part 66 comprises by end face extending axially but the tank 68 that separates with first surface 62 along sleeve 149; One columnar internal axle sleeve 69 is stretched in tank 68 spaces of pivoting part 66 by the second surface 64 of tooth portion 60 along the axial edge of sleeve 149; One breach 72 is to be formed between the second surface 64 of pivoting part 66 and tooth portion 60 and to extend to tank 68; Ratchet 58 further comprises by extend axially the non-circular interlock hole 70 to tank 68 of first surface 62 along sleeve 149, and the sectional shape in interlock hole 70 conforms to second section 305 sectional shape of axostylus axostyle 301, and a projection 73 is formed at the second surface 64 of tooth portion 60 and abuts against a side of breach 72.

Ratchet 58 is to be sheathed on first side 151 of sleeve 149; Pivoting part 66 ends of ratchet 58 penetrate in the big footpath section 161 of installing space 155 of sleeve 149; The second surface 64 of the tooth portion 60 of ratchet 58 abuts against first side 151 of sleeve 149; And the internal axle sleeve 69 of ratchet 58 is stretched in the spring 52 by second end, 56 places of spring 52; Spring 52 is sheathed near the part of second end 56 in the tank 68 of pivoting part 66 (as shown in Figure 3), and second end 56 of spring 52 embeds in the breach 72 of ratchets 58 and is resisted against on the projection 73 (free state of spring 52 this moment for not reversed as yet), and 301 second section 305 terminal 307 interlock hole 70 of passing ratchet 58 of axostylus axostyle; And a part of terminal 307 is positioned at outside the first surface 62 of ratchet 58; This moment, the projection 73 of ratchet 58 was to abut on second retaining wall 181 of sleeve 149 (like Fig. 4, shown in 5), when axostylus axostyle 301 when the axis of sleeve 149 pivots, be that pivot is moving together for interlock ratchet 58; And the projection 73 of ratchet 58 is understood second end 56 of torsion spring 52 by pivoting away from second retaining wall 181 and near first retaining wall, 179 ground in conduit 177; Further make spring 52 produce the elastic force that resets, and when projection 73 during the closer to first retaining wall 179, spring 52 is the strong more elastic force of generation.

Pivot joint 10 shown in foundation is graphic more comprises one second conjunction 80 that articulates with first conjunction 141; Second conjunction 80 has one and links wall 82; And with link that wall 82 is connected and along axially spaced first and second end wall 84 of sleeve 149; First and second end wall 84 has a pivot hole 86 of circle hole shape separately, and connecting wall 82 forms two lockholes 90, between two lockholes 90, forms a registration holes 75 and two fixed holes 76; Link wall 82 and have an end face 98 that is formed on lower edge between two end walls 84; Second conjunction 80 comprises by end face 98 towards linking wall 82 along one first groove 92, one second groove 94 stretched, and wherein first groove 92 is between second end wall 84 and second groove 94, and second groove 94 is close to first end wall 84.

First end wall 84 of second conjunction 80 articulates with the end 307 of axostylus axostyle 301; Second end wall 84 articulates with head end 304; And the end 307 of axostylus axostyle 301 passes the outer and card in the pivot hole 86 of first end wall 84 and establishes fasteners 309 that constitute such as C shape clasp, makes the axostylus axostyle 301 can't be along the axial displacement of sleeve 149, and the sleeve 149 of first conjunction 141 like this is between first and second end wall 84; And first end wall 84 of second conjunction 80 is posted by the first surface 62 of ratchet 58; Second end wall 84 abuts in flange 193 surfaces (as shown in Figure 3) of end plug 191, and first end 54 of this outer spring 52 aligns with first groove 92 of second conjunction 80, and second end 56 of spring 52 and the projection 73 of ratchet 58 align with second groove 94 of second conjunction 80; Second conjunction 80 can be pivoted between enable possition (like Fig. 4, shown in 5) or operating position (as shown in Figure 9) around the axis that defines according to axostylus axostyle 301; Be noted that under such assembled state, second conjunction 80 does not combine with ratchet 58 as yet linkedly; Therefore second conjunction 80 is not located, and can freely between enable possition (like Fig. 4, shown in 5) and operating position (as shown in Figure 9), pivot.In addition the lockhole 90 of second conjunction 80 can screws on one second object 132 that the seat cushion such as motorcycle constitutes (like Fig. 8, shown in 9).

Pivot joint 10 comprised a leg-of-mutton fixed block 122 that removably combines with ratchet 58 shown in foundation was graphic; Fixed block 122 has a bearing surface 124; And a circular arc clamping face 126 that is connected with an end of bearing surface 124, the plural latch 128 that is made up of unidirectional tooth is formed on the clamping face 126.

When fixed block 122 is not installed between the ratchet 58 and second conjunction 80 as yet; Second end 56 of spring 52 is that be in can be by the state of second conjunction, 80 interlocks; So spring 52 is in the nature of not reversed as yet (as shown in Figure 5); Being designed with like this helps pivot joint 10 assemblings; At length say, when the part of pivot joint 10 is installed, because spring 52 does not need to reverse in advance; Therefore can remove from and use special tool torsion spring 52 to be installed on the step in first and second conjunction 20,80; And can assemble all component of pivot joint 10 except fixed block 122 fast, all component beyond the fixed block 122 all just is installed on fixed block 122 in the tooth portion 60 of ratchet 58 after the installation, and makes the bearing surface 124 of fixed block 122 abut in binding wall 82 surfaces of second conjunction 80; Be positioned at end 307 rotating shaft rods 301 (for example clamping terminal 307 with needle-nose pliers rotates) in first end wall, 84 outsides again by axostylus axostyle 301 with instrument; Ratchet 58 was driven and projection 73 is pivoted (towards the turn-back of the elastic force direction of second end 56 of spring 52) toward the direction away from second retaining wall 181 around the axis of sleeve 149 when axostylus axostyle 301 rotated, and further second end 56 of torsion spring 52 makes spring 52 produce the elastic force (as shown in Figure 8) that resets; Because the design of the tooth portion 60 unidirectional teeth of ratchet 58; Therefore in the process of rotating ratchet 58, the tooth portion 60 of ratchet 58 is the latch 128 separating tooth portions 60 that promote fixed block 122, makes ratchet 58 that projection 73 is pivoted towards first retaining wall 179; After making spring 52 reverse the suitable elastic force of generation; When removing the active force that puts on the axostylus axostyle 301, the elastic force of spring 52 applies the projection 73 that makes ratchet 58 towards the active force that second retaining wall 181 pivots, and makes the latch 128 further positioning mountings 122 of tooth portion 60 engages fixed parts 122 of ratchet 58; Will make that so spring 52 sees through ratchet 58 and fixed block 122 is passed to second conjunction 80 with elastic force, and flexibly second conjunction 80 remained on the enable possition.The space that second end 56 of the projection 73 of ratchet 58 and spring 52 passed through when second groove 94 of second conjunction 80 provided torsion spring 52 in addition makes second end 56 of spring 52 have bigger quilt and reverses the space.

The buffer 12 that is installed on the pivot joint 10 that further comprises of the present invention; To be second conjunction, 80 interlocks, second object 132 that is used for reducing pivot joint 10 be switched to behind the enable possition because inertia and reaction force cause second object 132 back and forth to rock phenomenon repeatedly by operating position buffer 12; Buffer 12 comprises that a pedestal 323, is arranged at the shock absorber 395 in the pedestal 323, and one can be used for pushing against shock absorber 395 after stressed frame plate 373.

Consult shown in Figure 1A, the 1B; Pedestal 323 has an exterior edge face 325 and an interior edge face 327 that separates; At inside and outside end face 327, one first end face 333 and one second end face 335 that extend and separate between 325, and in first and second end face 333, extension and connect one the 3rd end face 329 and the 4th end face 331 of inside and outside end face 327,325 between 335.Pedestal 323 comprises by

interior edge face

327 and 325 extending but the mounting groove 338 that separates with exterior edge face 325 towards the exterior edge face; Mounting groove 338 has a containing space 353; Containing space 353 comprises near one first block face 357 of first end face 333 and near one second block face 371 of second end face 335; Mounting groove 338 further comprises by second block face 371 and extends to first end face 333 and extend to a slideway 339 of interior edge face 327; Each forms an outwards positioning part 337 of protrusion on the 3rd end face 329 and the 4th end face 331; Have a hole 351 in each positioning part 337, on second end face 335, have a fixing part 355 of outside protrusion, this fixing part 355 a wherein surface has with interior edge face 327 and is a vertical locating column 359.

Frame plate 373 forms sheet structure; Frame plate 373 has positive 375 and one back side 377 that separates relatively; Form an end 379 in frame plate 373 lower edges, the upper limb of frame plate 373 forms a pressure section 391 of protrusion, and pressure section 391 upper ends form an acting surface 393; An and abutment facing 398 that separates with acting surface 393; Form a plurality of recesses 392 in acting surface 393 places, each recess 392 is that acting surface 393 districts are divided into three parts, and the size of each recess 392 changes the surface area that system can change acting surface 393.The pressure section 391 of frame plate 373 is inserted in the containing space 353 of pedestal 323; Abutment facing 398 is posted by first block face 357; The acting surface 393 and second block face 371 separate, and and frame plate 373 passes pedestal 323 through slideways 339 and makes terminal 379 to be positioned at first end face, 333 outsides.

Shock absorber 395 is to constitute such as the made rectangular block of material that tool rubber, silica gel etc. have elasticity or a bumper and absorbing shock effect, and shock absorber 395 has one first bearing surface 397 and one second bearing surface 399 that separates relatively.Shock absorber 395 is inserted in the containing space 353 of pedestal 323 and between second block face 371 of the acting surface 393 of frame plate 373 and pedestal 323, shock absorber 395, first bearing surface 397 is posted by acting surface 393, the second bearing surfaces 399 and is posted by second block face 371.

The pedestal 323 that frame plate 373 and shock absorber 395 are installed is to be installed on the binding wall 82 of second conjunction 80 and near a side of the sleeve 149 of first conjunction 141; The locating column 359 of pedestal 323 embeds registration holes 75; Align with each fixed hole 76 respectively in each hole 351; Passing binding wall 82 through two-screw locks in each hole 351 pedestal 323 is fixing; Frame plate 373 and shock absorber 395 are bonded in the containing space 353 that wall 82 is limited in pedestal 323, and end 379 ends of frame plate 373 are positioned at the recess 152 of first conjunction 141, make buffer 12 along with second conjunction 80 pivots between enable possition and operating position together.

Explanation for ease; System's hypothesis second conjunction 80 is positioned on the enable possition (if pivot joint 10 is to be used on the seat cushion of motorcycle; Then this moment motorcycle seat cushion be opening state), this moment, the end 379 of buffer 12 was to be resisted against on the abutment facing 183 of first conjunction 141 (as shown in Figure 9).When forcing in 132 last times of second object; Second object 132 will drive axis that second conjunction 80 defines around axostylus axostyle 301 by enable possition (as shown in Figure 8) toward operating position pivot (shown in figure 10); The binding wall 82 of second conjunction 80 promotes fixed block 122; Further make fixed block 122 promote ratchet 58 and rotate, second end 56 of ratchet 58 torsion springs 52 pivots, in addition; Ratchet 58 drives interlock cover 213 via axostylus axostyle 301 and pivots; Make second conjunction 80 and second object 132 when operating position pivots, must be overcome the elastic force and interlock cover 213 dampings with respect to sleeve 149 of spring 52 by the enable possition, make second conjunction 80 can produce the slow rotation with damping, this moment, the end 379 of buffer 12 was past direction away from abutment facing 183 along with second conjunction 80 pivot together (shown in figure 11).

When second conjunction 80 is positioned at operating position (shown in figure 10); Pivot joint 10 is opened with suitable speed after the seat cushion release can be provided automatically; Say that at length after the seat cushion release, second end 56 of spring 52 promotes ratchet 58 makes second conjunction 80 by the past enable possition pivot of operating position (shown in figure 10) (as shown in Figure 8); Meanwhile axostylus axostyle 301 drives interlock cover 213 rotation together; Then the elastic force that produces of spring 52 need overcome the damping that produces when interlock cover 213 rotates, make can be suitable such as second object 132 of seat cushion speed open, meet accident to avoid excessive velocities; In addition when second conjunction 80 is pivoted toward operating position by the enable possition, the space that first groove 92 of second conjunction 80 provides first end 54 of spring 52 to pass through.In addition when second conjunction, 80 interlocks, second object 132 is pivoted the arrival enable possition by operating position; The frame plate 373 terminal 379 of buffer 12 is resisted against after the abutment facing 183 of first conjunction 141; Institute's inertia that second conjunction 80 and second object 132 produce because of pivoting can continue to pivot (promptly having surmounted the enable possition) toward the direction away from operating position; The pedestal 323 of buffer 12 continues along with 80 displacements of second conjunction; But frame plate 373 is because of being stopped by abutment facing 183; Make the acting surface 393 of frame plate 373 compress shock absorber 395 generation resiliently deformables (shown in figure 12), the elastic force that shock absorber 395 resiliently deformables produce is then offset the inertial force of second conjunction 80 and the 132 pivot generations of second object, further makes second conjunction 80 and second object 132 be reset to enable possition (as shown in Figure 9) towards the direction of operating position.

Buffer 12 of the present invention is when being used for reducing second object 132 be installed in second conjunction 80 and being pivoted toward the enable possition by operating position; (approximately can reduce to 1～2 time) because the number of times that inertia and reaction force acts make second object 132 be switched to can back and forth rock behind the enable possition, so can effectively reduce the probability of damaging with first object 130 and first conjunction, 141 sealed parts to second object 132 such as the locomotive seat cushion is back and forth rocked.Pivot joint 10 with this creation is installed on the locomotive; Generally all be that plastic materials is processed with first conjunction, 141 sealed parts on the locomotive; Therefore quite easily because seat cushion rocks if produce too many time when opening; Locomotive and first conjunction, 14 sealed parts just are easy to damage, and the number of times that after the buffer 12 that the present invention is installed, seat cushion is back and forth rocked is reduced to 1～2 time, to reduce the probability that locomotive and first conjunction, 14 sealed parts are damaged.

The pivot joint 10 that provides damper of the present invention to install has the rotation of damping except second conjunction 80 is produced; Another characteristics are that pivot joint 10 assemblings do not need to use in addition tool torsion spring 52 to install; Cooperate the design of detachable fixed block 122 by ratchet 58; Make spring 52 under the nature of being reversed, to be installed in the pivot joint 10; Therefore install and have high convenience, can improve assembling efficiency effectively, further reduce manufacture cost.Moreover spring 52 also can see through the elastic force that rotation ratchet 58 reverses second end 56 and adjusts spring 52 generations; At length say; The weight of second object 132 that sets firmly with second conjunction 80 can influence the size that spring 52 need put on the elastic force of second conjunction 80; Because when spring 52 elastic force are too strong; The pivot speed of second object 132 can be too the fast and user that possibly wound; When the elastic force of spring 52 was too weak, spring 52 can't pivot by second conjunction, 80 promotions, second object 132, therefore when the weight of the pivot joint that the present invention is installed 10 back discoveries second object 132 is heavier; System can be directly to see through end 307 rotating ratchets 58 of axostylus axostyle 301 such as the instrument of needle-nose pliers; Make second end 56 of spring 52 can be reversed angle big (projection 73 pivots near first retaining wall 179 shown in Fig. 8 imaginary line), spring 52 produced enough support the elastic force of second conjunction 80 with suitable speed pivot, so can be under the state of not dismantling pivot joint 10 elastic force of reinforcement spring 52 apace.On the contrary when the pivot joint that the present invention is installed 10 backs find that second object, 132 weight that combine with second conjunction 80 are light; Then elder generation makes tooth portion 60 push fixed block 122 open with the end 307 backward rotation ratchets 58 that the instrument such as needle-nose pliers sees through axostylus axostyle 301; Again fixed block 122 is removed just second end 56 of the complete retracting spring 52 of ability (ratchet 58 rotates towards the elastic force direction of second end 56 of spring 52) of back; Spring 52 is formed after the free state of not reversed; Just fixed block 122 is combined in the tooth portion 60 of ratchet 58 once more; Make projection 73 towards first retaining wall 179 with end 307 rotating ratchets 58 that see through axostylus axostyle 301 such as the instrument of needle-nose pliers again; Also can adjust spring 52 apace and reverse the suitable elastic force of generation, prevent the excessive velocities that second object 132 moved when second conjunction 80 was pivoted toward the enable possition by operating position.

The state that ratchet 58 designs of the present invention make spring 52 do not reversed as yet just can be assembled down, and can significantly reduce the time that the dealer assembles pivot joint 10.Has damping when the design of end plug 191 and interlock cover 213 is rotated second conjunction 80 in addition; And the manufacturer can see through sheath body 215 length that change interlock cover 213 easily to be increased or reduces; Make damping oil with respect to the area of contact between interlock cover 213 and the sleeve 149; Can control the damping that produces when interlock cover 213 pivots easily, the weight that is incorporated into the second different object 132 on second conjunction 80 with cooperation is done optimized adjustment.

Above-mentioned basic instruction explains that as far as having the people of the common technical ability in related domain, many extensions and variation will be to show and Yi Zhizhe.For example ratchet 58 can not comprise pivoting part 66 and breach 72; The end that ratchet 58 like this just is combined in axostylus axostyle 301 rotates therewith; Second end 56 of spring 52 then is resisted against on the projection 73; So when ratchet 58 rotations make projection 73 near first retaining wall 179, projection 73 is to compress and second end 56 of torsion spring 52, makes the bigger elastic force of spring 52 generations; When ratchet 58 toward near 181 rotations of second retaining wall time, second end 56 of spring 52 can closely be resisted against on the projection 73 and with projection 73 displacements because of elastic force.

In addition, pivot joint 10 of the present invention can not comprise buffer 12, under the state that lacks buffer 12, just makes second object 132 that combines with second conjunction 80 produce the phenomenon of back and forth rocking because of inertia and reaction force easily.Or pivot joint 10 of the present invention can not comprise interlock cover 213 and end plug 191, and first conjunction 141 can not comprise mounting groove chamber 157, so, can not produce the rotation with damping when so just second conjunction 80 is pivoted toward the enable possition by operating position.

Because the present invention that specification discloses can implement in other particular form that does not break away from spirit of the present invention or general characteristics, and some forms of these particular forms are pointed out, so the embodiment that specification discloses should be regarded as illustrating and unrestricted.Scope of the present invention is to be defined by appended claim, rather than is defined by above-mentioned explanation, changes and will be included within its scope for the institute of impartial meaning that falls into claim and scope.

Claims

1. a pivot joint is characterized in that, comprising:

One first conjunction (141); Has a connecting part (143); Connecting part (143) has an extension part (145); One sleeve (149) is formed on the extension part (145); Sleeve (149) comprises axially spaced one first side (151) and one second side (153) along sleeve (149), and sleeve (149) further comprises a periphery surface (154) that is connected between first and second side (151,153), and an installing space (155) is by first side (151) of sleeve (149) extending axially but separate with second side (153) along sleeve (149); Sleeve (149) further comprises by first side (151) draw-in groove (46) that extends axially and extend to installing space (155) along sleeve (149); First conjunction (141) comprises the abutment facing (183) on the periphery surface (154) that is formed on sleeve (149) in addition, and abutment facing (183) separates along the axial and draw-in groove (46) of sleeve (149), and connecting part (143) are will be fixedly arranged on one first object (130);

One second conjunction (80) with first conjunction (141) pivot joint; Second conjunction (80) comprises that one links wall (82); And by linking vertically extending one first end wall (84) of wall (82) two sides and one second end wall (85); The sleeve (149) of first conjunction (141) is positioned between first and second end wall (85) of second conjunction (80); Second conjunction (80) is to rotate between enable possition and operating position relative to first conjunction (141), and linking wall (82) is will be fixedly arranged on one second object (132), and second object (132) is along with second conjunction (80) pivots between enable possition and operating position together;

One spring (52) has one first end (54) and one second end (56), and spring (52) is to be installed in the installing space (155), and first end (54) is sticked in the draw-in groove (46), and second end (56) is near first side (151) of sleeve (149);

One axostylus axostyle (301); Be hubbed on the sleeve (149) of first conjunction (141); Axostylus axostyle (301) comprises axially extended one first section (303) and one second section (305) along sleeve (149); Second section (305) comprise the non-circular end (307) away from first section (303); First section (303) of axostylus axostyle (301) are and first end wall (84) pivot joint of second conjunction (80) that terminal (307) are and second end wall (85) pivot joint, second conjunction (80) is pivoted between enable possition and operating position around the axis of axostylus axostyle (301) definition;

One ratchet (58); Combine with the end (307) of axostylus axostyle (301); Ratchet (58) has a tooth portion (60) that is made up of the unidirectional tooth of plural number, and tooth portion (60) comprises the axially spaced first surface (62) and a second surface (64) along sleeve (149), and the second surface (64) of ratchet (58) forms a projection (73); Ratchet (58) is the outside, first side (151) that is positioned at first conjunction (141); Second end (56) of spring (52) is resisted against on the projection (73), when ratchet (58) when the axis of sleeve (149) definition pivots, be that second end (56) of torsion spring (52) makes it to produce elastic force;

One fixed block (122); Be combined between ratchet (58) and second conjunction (80); Fixed block (122) comprises a bearing surface (124) and a clamping face (126); Clamping face (126) go up to form a unidirectional latch (128), and the bearing surface (124) of fixed block (122) is resisted against the bindings wall (82) of second conjunction (80), and the tooth portion (60) of latch (128) and ratchet (58) is chimeric;

When ratchet (58) during towards the backward rotation of the elasticity direction of second end (56) of spring (52), tooth portion (60) pushes fixed block (122) open, and the latch (128) of fixed block (122) and tooth portion (60) are broken away from,

When ratchet (58) when the elasticity direction of second end (56) of spring (52) is rotated, tooth portion (60) is the latch (128) of snap fasteners (122), and fixed block (122) firmly is combined between the tooth portion (60) that links wall (82) and ratchet (58),

When second conjunction (80) was pivoted toward operating position by the enable possition, linking wall (82) was to promote bearing surface (124) fixed block (122) interlock ratchet (58) is pivoted, and second end (56) of torsion spring (52).

2. pivot joint as claimed in claim 1; It is characterized in that: ratchet (58) comprises and is formed on first surface (62) one non-circular interlock holes (70); The end (307) of axostylus axostyle (301) is to combine with interlock hole (70), and the part of terminal (307) is positioned at first surface (62) outside

When axostylus axostyle (301) rotated, the end (307) of axostylus axostyle (301) was that interlock ratchet (58) rotates together,

When second conjunction (80) pivoted between unlatching and operating position, fixed block (122) was that interlock ratchet (58) rotates together, and ratchet (58) is that interlock axostylus axostyle (301) rotates together.

3. pivot joint as claimed in claim 1; It is characterized in that: its middle sleeve (149) further comprises a conduit (177) that is formed on first side (151); Conduit (177) comprises axially spaced one first retaining wall (179) and one second retaining wall (181) around sleeve (149); Shape and locate to form a projection (73) near breach (72) between pivoting part (66) outer circumferential face of ratchet (58) and the second surface (64), projection (73) is to be positioned at conduit (177)

When projection (73) was posted by second retaining wall (181), second end (56) of spring (52) was in the nature of not reversed,

When projection (73) pivoted away from second retaining wall (181) near first retaining wall (179), second end (56) of spring (52) was reversed and is produced elastic force, and projection (73) is strong more the closer to the elastic force that first retaining wall (179) spring (52) produces.

4. pivot joint as claimed in claim 1; It is characterized in that: wherein first conjunction (141) further comprises a mounting groove chamber (157) that is formed on second side (153) and separates with installing space (155); Mounting groove chamber (157) has an internal ring wall (165); First conjunction (141) comprises a short slot (243) that is formed on periphery surface (154) and extends to second side (153) and mounting groove chamber (157) in addition; First section (303) of axostylus axostyle (301) comprise the head end (304) away from second section (305) and one-tenth round bar shape; And a flat portion (306) that supports that is formed on the non-round bar shape between head end (3 04) and second section (305), the head end (304) of axostylus axostyle (301) articulates with first end wall (84) of second conjunction (80), and pivot joint (10) further comprises:

One interlock cover (213); System is hubbed in the sleeve (149) of first conjunction (141); Interlock cover (213) comprises one first wall (231) and one second wall (233); And be formed on the card complex hole (237) that first wall (231) is gone up the non-circular hole shape, axostylus axostyle (307), the flat portion (306) that supports combine with card complex hole (237);

One end plug (191); System is installed in second side (153) of first conjunction (141), and end plug (191) comprises a columnar socket tube (195), has a space (197) in the socket tube (195); Socket tube (195) has an inner ring surface (199) and an outer ring surface (201) that separates; The internal diameter of inner ring surface (199) is slightly less than the external diameter of interlock cover (213), and the outer ring surface (201) of socket tube (195) is gone up shape one protuberance (241), and the socket tube (195) of end plug (191) is to be positioned at mounting groove chamber (157); Protuberance (241) is chimeric with short slot (243); The rotational that end plug (191) can't be defined around sleeve (149), first section (303) of axostylus axostyle (301) are to articulate with end plug (191), and the space system that forms between anchor ring (201) and the interlock cover (213) outside the end plug (191) will be applied damping oil; Have rotating of damping relative to first conjunction (141) generation when making interlock cover (213), further make second conjunction (80) produce rotation with damping by axostylus axostyle (301) interlock.

5. pivot joint as claimed in claim 4; It is characterized in that: wherein interlock cover (213) comprises a containing space (235) that is formed on second wall (233) and extends to card complex hole (237); End plug (191) comprises the beam barrel (203) with one of circular hole through hole (211) by the end face extension of space (197); A surrounding wall (207) external diameter that beam barrel (203) has is slightly less than the internal diameter of containing space (235); First section (303) of axostylus axostyle (301) are to articulate with through hole (211); Beam barrel (203) is to be positioned at containing space (235), and the space between surrounding wall (207) and the containing space (235) system will be applied damping oil, make interlock cover (213) relatively end plug (191) generation have rotating of damping.

6. pivot joint as claimed in claim 1 is characterized in that: pivot joint (10) further comprises:

One pedestal (323); Be fixedly arranged on the binding wall (82) of second conjunction (80); Pedestal (323) comprises an interior edge face (327) and an exterior edge face (325) that separates; And one first end face (333) that between inside and outside end face (327,325), extends; Pedestal (323) comprises a mounting groove (338) that is formed on interior edge face (327), and mounting groove (338) has one first block face (357) near first end face (333), and the interior edge face (327) of pedestal (323) is the binding wall (82) that is resisted against second conjunction (80);

One frame plate (373); Be incorporated into the mounting groove (338) of pedestal (323) slidably, frame plate (373) comprises an end (379) and a pressure section (391) that separates with terminal (379), and pressure section (391) has an acting surface (393) and an abutment facing (398); Pressure section (391) is positioned at mounting groove (338) and can slides; Terminal (379) are to be positioned at first end face (333) outside, and when second conjunction (80) when being positioned at the enable possition, the end (379) of frame plate (373) is on the abutment facing (183) that is resisted against first conjunction (141); When second conjunction (80) is non-when being positioned at the enable possition, the end (379) of frame plate (373) is away from abutment facing (183);

One shock absorber (395) is between the acting surface (393) of the mounting groove (338) that is installed in pedestal (323) and frame plate (373), and when second conjunction (80) when being positioned at the enable possition, the acting surface (393) of frame plate (373) is to compress shock absorber (395).

7. pivot joint as claimed in claim 6; It is characterized in that: its medium frame plate (373) comprises a front (375) and a back side (377); Pressure section (391) is to be formed on front (375) projectedly; Pressure section (391) comprises an abutment facing (398) that is positioned between acting surface (393) and terminal (379); Pedestal (323) comprises one second end face (335) that separates with first end face (333), and mounting groove (338) comprises and be formed on a containing space (353) that has first block face (357) on the interior edge face (327) that containing space (353) comprises one second block face (371) near second end face (335); Mounting groove (338) comprises further by first block face (357) and extends to first end face (333) and extend to the slideway (339) of interior edge face (327) that frame plate (373) is to make end (379) be positioned at first end face (333) outside through slideway (339);

When shock absorber (395) is not compressed when producing resiliently deformable by frame plate (373), the abutment facing (398) of frame plate (373) is to be posted by first block face (357),

When shock absorber (395) was compressed the generation resiliently deformable by frame plate (373), the abutment facing (398) of frame plate (373) was to break away from first block face (357).

8. pivot joint as claimed in claim 6 is characterized in that: the pressure section (391) of its medium frame plate (373) comprises two recesses (392) that extend to acting surface (393), makes acting surface (393) be divided into three parts by each recess (392) district.