CN203420979U

CN203420979U - Fixing device

Info

Publication number: CN203420979U
Application number: CN201320519928.1U
Authority: CN
Inventors: 曾英智
Original assignee: Hanwit Precision Industries Ltd
Current assignee: Hanwit Precision Industries Ltd
Priority date: 2013-08-23
Filing date: 2013-08-23
Publication date: 2014-02-05
Anticipated expiration: 2023-08-23

Abstract

The utility model provides a fixing device. According to the fixing device, a locating portion which is located in a hole of a first plate body is arranged below a penetrating hole formed in a sleeve, an annular protruding portion is arranged on the outer portion of the sleeve and adjacent to the upper portion of the locating portion, a rod body extending downwards from the bottom face of the head of a fixing element penetrates through the penetrating hole in the sleeve, a threaded connection portion is arranged on the rod body, a protruding portion is arranged on the rod body and adjacent to the threaded connection portion, and the protruding portion abuts against an annular blocking portion on the periphery of the top of the penetrating hole. When the threaded connection portion of the fixing element is connected in a locking hole of a second plate body in a locking mode, an outer sleeve pipe is arranged on the head of the fixing element in a combined mode, an annular abut-against body is arranged below an inner accommodation space formed in the outer sleeve pipe, and the annular abut-against body abuts against the annular protruding portion of the sleeve in a linked mode to form movable sleeve connection. When the threaded connection portion of the fixing element is retreated from the locking hole, the outer sleeve pipe is matched with the sleeve to be linked with the first plate body, and retreating action is carried out at the second plate body. A user can quickly separate the first plate body through torsion rotation, and the fixing device has the advantages that operation is simple, and labor is saved in separation of plates.

Description

Fixing device

Technical field

The utility model relates to a kind of fixing device, espespecially in the perforation of sleeve for having penetrated fixed element, and on fixed element, be combined with outer sleeve, when fixed element exits, just can rely on the annular of outer sleeve support to do in the lump on the ring protuberance that body is held in sleeve the action of exiting, the mode that user can be rotated by torsion is separated and more laborsaving to plate by plate fast.

Background technique

General panel (plate is to plate) is when combining, utilization possesses and has knob, the set screw of the collar and screw gives interlocking, screw, the collar can be fixed on the first panel, and turn makes screw in the second panel, form preset location for locking in knob, recycling hand tools is by after screw lock, the first panel and the second panel interlocking are fixed into and are integrated, and can be used in and on the equipment that telecommunication bureau's rack, industrial computer, machine tool etc. utilize plural device, formation that mechanism organizes, make plate plate is connected and used.

Moreover, just having dealer to develop this kind is by cap bag, the floating screw that screw rod and positioning seat form, and after the positioning seat button of floating screw being fixed in the perforation of sheet material, it is fixing that recycling screw rod comes interlocking to form on another sheet material, and when user unloads sheet material, floating screw still can be fixed in the perforation of sheet material and can not caused loss by positioning seat, refer to shown in Figure 12, in figure, can know and find out, wherein this sleeve A is interior for being assembled with a lock-connecting piece B, and be provided with an elastomer A1 in sleeve A outer cover, and elastomer A1 one end is to be held on the backstop bulge loop A2 of sleeve A, the elastomer A1 the other end is held in the place, cap head B1 inner side of lock-connecting piece B, the screw rod B2 that just cap head B1 mono-side place can be extended penetrates in the containing space A0 of sleeve A inside, and make the sleeve A backstop A3 block that establish in place inside containing space A0 between the screw rod B2 and sleeve A of lock-connecting piece B, and the screw rod B2 of lock-connecting piece B is piercing in the containing space A0 outside of sleeve A, in screw rod B2, lock and be connected to a nut C again, can be positioned at the formed welding section A4 weldering in backstop bulge loop A2 bottom by sleeve A is located on sheet material D, and utilize lock-connecting piece B interlocking to be combined into one after another coordinates on sheet material.

When although this kind of mode can avoid sleeve A weldering to be located on sheet material D, because gap between between sleeve A and lock-connecting piece B produces skew or rocks, collide in the perforation (not shown) of sheet material D when preventing lock-connecting piece B interlocking and derived wearing and tearing, collapse the problems such as tooth, also be difficult for causing sheet material D structural damage, only this sleeve A is welded in the process on sheet material D, its soldering-tin layer just can infiltrate in nut C place along the micro-gap between sleeve A and perforation because add hot melt tin by tin stove after, so that occur by easily forming the situation of obstruction or blocking after tin stove, allow operating personnel utilize instrument that nut C just can be produced and be skidded or wear phenomenon when lock-connecting piece B above dismantles, inconvenience while causing nut C dismounting increases with difficulty, whole spent man-hour and cost also relative raising.

Yet, while also having dealer to develop another kind can to make plate separated to plate fast and labour-saving lockup device, refer to shown in Figure 13, in figure, can know and find out, wherein this sleeve E is interior for being equipped with locking unit F, and on the forced section F1 having at locking unit F, be sequentially provided with spiro rod section F2 and thread section F3, and spiro rod section F2 peripheral region is provided with can be for the embedding edge E1 inlay card caulking groove F21 that formation activity is docked in the inner of sleeve E, just after can the clamping slot (not shown) of sleeve E bottom being embedded on plate G, recycling hand tools imposes a rotation external force is laterally locked on base H its thread section F3 in the forced section F1 of locking unit F, when wish dismounting locking unit F removes on base H, also can impose a counterrotating external force on locking unit F, its thread section F3 just can depart from base H, and drawing sleeve E removes plate G, and then reach the quick and laborsaving effectiveness of plate to plate separation that makes.

Only the embedding edge E1 of this sleeve E is embedded in the caulking groove F21 of locking unit F spiro rod section F2, its thread section F3 just can protrude from outside sleeve E and plate G, when plate G is covered on base H downwards, often can collide because of the thread section F3 of locking unit F and on base H, cause plate G to produce beat displacement, to cause thread section F3 to be laterally locked in accurately, on base H, cause structural damage or destruction, and because of industrial computer now, the capacity utilizations such as machine tool are day by day in universal situation, on the plate G of its casing and base H, conventionally all can be provided with connector, after plate G is covered on base H, connector can be coordinated to docking, so, if producing, plate G have beat or crooked situation to occur, just can cause between its connector and cannot aim at, or even collision causes structural damage and has influence on the stability that overall signal transmits, be and need to be engaged in the direction place that this journey dealer desires most ardently research improvement.

Summary of the invention

Therefore the utility model designer is because above-mentioned problem and disappearance, be collect related data via assessment in many ways and consider, and utilize the research and development experience for many years of engaging in the industry constantly study and revise, this kind of fixing device begins to design.

For achieving the above object, the technical solution adopted in the utility model is:

, it is characterized in that: include sleeve, fixed element and outer sleeve, wherein:

The hollow inside of this sleeve has perforation, and below perforation, locates to be provided with the positioning part at the hole place that is positioned default the first plate body, and above perforation, peripheral region is formed with annular stop part, and sleeve outside is provided with ring protuberance adjacent to place, top, positioning part;

This fixed element has the head that is positioned at place, sleeve top, and at head bottom surface place, to downward-extension, be provided with the shaft that penetrates in perforation and the spiro union portion below shaft, and shaft is formed with outwardly and is held in the bump that forms block location on annular stop part adjacent to spiro union portion place;

This outer sleeve is in conjunction with being positioned on the head of fixed element, and the containing space that inside pipe casing has outside below place is formed with annular and supports body, when the spiro union portion of fixed element is piercing in perforation place of sleeve and interlocking in the lockhole of default the second plate body time, annular that can interlock outer sleeve supports on the ring protuberance that body is held in sleeve via crossing ring protuberance place after resiliently deformable and reseting procedure, then by annular, supports body and be held on ring protuberance and form pivot bush unit.

In technological scheme preferably, also can increase following technical characteristics:

The perforation top peripheral region of this sleeve is formed with the face that holds of smooth shape outwardly, and the upper and lower two side surface places of annular stop part are formed with respectively and can and form a coplanar ejection face and can support the stop surface that forms thereon block location for bump with the face of holding for head bottom surface place's ejection of fixed element.

The positioning part outer surface of this sleeve is provided with annular ditch groove.

The positioning part of this sleeve is provided with the hole place of default the first plate body internal thread and the outside thread mutually screwing togather.

On the ring protuberance of this sleeve, be formed with the prevent surface of a smooth shape, and on the shaft of fixed element, be arranged with an elastic element, its elastic element external diameter is less than head and is greater than the external diameter of sleeve, and by elastic element one end, be held in the prevent surface of ring protuberance, and elastic element the other end elasticity supports to arrive in and in head bottom surface place, is a resiliently deformable displacement.

The turnover downwards of the prevent surface place of this liner ring protuberance is formed with and can supports for the annular of outer sleeve body and cross after via resiliently deformable and reseting procedure and encircle protuberance and support the curved arc shape supporting surface that forms thereon pivot bush unit.

The head surface of this fixed element is provided with the actuating part of cross, interior hexagonal groove, rice word groove or hexagon projection, and at head periphery place, be formed with the interface of plural double wedge, embossing face or positioning convex point, and the containing space of outer sleeve top place be provided with can be for the interface of head the fixed groove in conjunction with location, and in head outer periphery place, be formed with pulling part outer sleeve is upper.

The head utilization assembling of this fixed element or imbed that the mode of ejaculation is one-body molded this outer sleeve, and the containing space being had by outer sleeve inside covers in sleeve and fixed element outside.

The bump external diameter of this fixed element is greater than the external diameter of shaft, and at bump, adjacent to shaft place, is formed with the skewed joint surface that forms block location on the annular stop part that is held in sleeve.

On the spiro union portion of this fixed element, there is outside thread.

Compared with prior art, adopt the advantage the utlity model has of technique scheme to be:

The place, perforation below that sleeve of the present utility model has is provided with the positioning part at the hole place that is positioned the first plate body, and locate to be provided with a ring protuberance in sleeve outside above adjacent to positioning part, and in the perforation of sleeve, penetrate place, fixation element head bottom surface to shaft and the spiro union portion of downward-extension, in shaft, adjacent to spiro union portion place, be formed with again the bump on the annular stop part that is held in perforation top peripheral region, when the spiro union portion interlocking of fixed element is in the lockhole of the second plate body, on can interlock fixation element head the annular at place, the outer sleeve that is combined with inner containing space below support on the ring protuberance that body is held in sleeve and form pivot bush unit, when the spiro union portion of fixed element exits, just can rely on outer sleeve to coordinate sleeve interlock the first plate body in the second plate body place, to do the action of exiting in the lump, the mode that user can be rotated by torsion is separated by the first plate body fast, and there is the simple and easy and plate of operation to plate separation labour-saving effectiveness more.

This elastic element of the present utility model is sheathed on sleeve outside, and the shaft of fixed element is penetrated downwards in perforation, recycling pressurizing mold with impact style punching press on head, the place's ejection of head bottom surface can be made on the annular stop part of sleeve its generation distortion and aperture dwindle, just can rely on elastic element elasticity to support to arrive in the head in fixed element, and interlock bump is held in and forms block location on annular stop part, make sleeve, fixed element and outer sleeve present activity mated condition, with effectively prevent fixed element emerge in sleeve outside.

The utility model is when sleeve and the assembling of the first plate body, first the application of force presses on outer sleeve downwards, the annular of outer sleeve is supported on the ring protuberance that body is held in sleeve crosses to place, ring protuberance below after the process via resiliently deformable and reset, just can rely on annular to support body is held on ring protuberance and forms pivot bush unit, while the suction nozzle of suction means being adsorbed in carry out the operations such as follow-up riveted joint or welding on head, whole center of gravity keeps stable, more accurate in contraposition assembling, also be difficult on the head of fixed element, being subject to because elastic element elasticity supports to arrive in the situation generation that the impact of external force vibrations produces skew or rocks, and after assembling, can reach location really, the quality of improve manufacturing and up-to-standard rate and the effectiveness that reduces production costs.

The utility model is when the first plate body (as panel) is covered on place, the second plate body (as framework) top downwards, because this elastic element before fixed element interlocking is that elasticity supports to arrive in and is a resiliently deformable displacement in head bottom surface place, and interlock bump can make after being held on the annular stop part of sleeve spiro union portion be retracted into can not protrude from the first plate body place in the perforation of sleeve, the spiro union portion of fixed element collides the first plate body beat displacement that caused on the second plate body and makes spiro union portion cannot be aligned with accurately the lockhole place of the second plate body when avoiding the first plate body to cover, or even fixed element is subject to the excessive generation slight crack of impact shear or fracture, or spiro union portion that careless manipulation causes collapses the situation generation of tooth or fracture.

The utility model is when the first plate body is subject to affecting of external force, just can rely on the annular of outer sleeve support on the ring protuberance that body is held in sleeve, and coordinate elastic element elasticity to support to arrive in head to there is suitable elasticity prestressing, make the spiro union portion of fixed element be difficult for turn and exit the lockhole place in the second plate body, and there is stable location and the anti-loose effect of stopping.

Accompanying drawing explanation

Fig. 1 is stereo appearance figure of the present utility model;

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

Fig. 3 is the three-dimensional exploded view at another visual angle of the utility model;

Fig. 4 is the side cutaway view before the utility model assembling;

Fig. 5 is the side cutaway view after the utility model assembling;

Fig. 6 is the side cutaway view after the utility model preferred embodiment riveted joint;

Fig. 7 is the side cutaway view after the utility model preferred embodiment discharges;

Fig. 8 is the side cutaway view of another preferred embodiment of the utility model;

Fig. 9 is the utility model side cutaway view of a preferred embodiment before locking again;

Figure 10 is the utility model side cutaway view of a preferred embodiment after locking again;

Figure 11 is the utility model side cutaway view of a preferred embodiment after exiting again;

Figure 12 is the side cutaway view of existing positioning device;

Figure 13 is the side cutaway view of existing lockup device.

Description of reference numerals: 1-sleeve; 11-perforation; 111-holds face; 12-positioning part; 121-annular ditch groove; 122-internal thread; 13-annular stop part; 131-ejection face; 132-stop surface; 14-encircles protuberance; 141-prevent surface; 142-supporting surface; 2-fixed element; 21-head; 211-bottom surface; 212-actuating part; 213-interface; 22-shaft; 23-spiro union portion; 231-outside thread; 24-bump; 241-joint surface; 25-elastic element; 3-outer sleeve; 30-containing space; 301-fixed groove; 31-annular supports body; 32-pulling part; 4-the first plate body; 41-hole; 411-outside thread; 42-horizontal part; 43-vertical component effect; 5-the second plate body; 51-lockhole; A-sleeve; A0-containing space; A1-elastomer; A2-backstop bulge loop; A3-backstop; A4-welding section; B-lock-connecting piece; B1-cap head; B2-screw rod; C-nut; D-sheet material; E-sleeve; E1-embedding edge; F-locking unit; F1-forced section; F2-spiro rod section; F21-caulking groove; F3-thread section; G-plate; H-base.

Embodiment

For reaching above-mentioned purpose and effect, the technological means that the utility model adopts and structure thereof, hereby draw and illustrate with regard to preferred embodiment of the present utility model that in detail its structure is as follows with function, in order to do profit, understands completely.

Refer to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, be respectively the three-dimensional exploded view at stereo appearance figure of the present utility model, three-dimensional exploded view, another visual angle, the side cutaway view before assembling and the side cutaway view after assembling, in figure, can know and find out, the utility model is for including sleeve 1, fixed element 2 and outer sleeve 3, wherein:

The hollow inside of this sleeve 1 has longitudinal perforation 11, and locate to be provided with positioning part 12 below perforation 11, and positioning part 12 outer surfaces are provided with an annular ditch groove 121, and the perforation 11 top peripheral regions of sleeve 1 are formed with the face that holds 111 of smooth shape outwardly, it holds face 111 and is formed with adjacent to perforation 11 places the annular stop part 13 of tiltedly stretching shape, and the upper and lower two side surface places of annular stop part 13 are formed with respectively ejection face 131 and stop surface 132; Separately, sleeve 1 outside is located a distance and position adjacent to 12 tops, positioning part and is provided with a ring protuberance 14, and on ring protuberance 14, is formed with the prevent surface 141 of a smooth shape and the curved arc shape supporting surface 142 of being transferred by prevent surface 141 places downwards.

This fixed element 2 has the head 21 that is positioned at sleeve 1 place, top, and at 211 places, head 21 bottom surface, to downward-extension, be provided with to penetrate in perforation and locate the spiro union portion 23 that external diameter is less below the shaft 22 in 11 and shaft 22, and on spiro union portion 23, there is outside thread 231, and the shaft 22 of fixed element 2 is formed with adjacent to spiro union portion 23 places the bump 24 that external diameter is greater than shaft 22 outwardly, its bump 24 is formed with skewed joint surface 241 adjacent to shaft 22 places, and on shaft 22, be arranged with elastic element 25, and these elastic element 25 external diameters are less than head 21 and are slightly larger than the external diameter of sleeve 1, and head 21 surfaces of fixed element 2 are provided with and can be cross, interior hexagonal groove, rice word groove, the actuating part 212 of hexagon projection or other various types, and be formed with and can be plural double wedge at head 21 periphery places, embossing face, the interface 213 of positioning convex point or other tool locating function.

These outer sleeve 3 inside are formed with can be for the containing space 30 of sleeve 1 and fixed element 2 location, and above containing space 30, locate to be provided with can be for the interface 213 of head 21 fixed groove 301 in conjunction with location, and be positioned at the annular that containing space 30 lower opening places are formed with inside turnover and support body 31, just shoot mode is one-body molded an outer sleeve 3 to imbed the head of fixed element 2 21 can be utilized to plastics, or the interface 213 at head 21 periphery places and the fixed groove 301 of outer sleeve 3 utilize assembling mode to be combined location, and be positioned at head 21 outer periphery places on outer sleeve 3, be formed with and can be plural double wedge, embossing face, the pulling part 32 of positioning convex point or other tool anti-slip effect.

When the utility model is when assembling, first elastic element 25 is sheathed on to sleeve 1 outside, and by elastic element 25 one end, be held on the prevent surface 141 of ring protuberance 14, the shaft of fixed element 2 22 is penetrated downwards in the perforation 11 of sleeve 1 again, the other end of its elastic element 25 just can elasticity supports to arrive in 211 places, head 21 bottom surface and is a resiliently deformable displacement, make elastic element 25 between the ring protuberance 14 of sleeve 1 and the head 21 of fixed element 2, and by the 11 top peripheral regions of boring a hole, tiltedly stretch after the annular stop part 13 of shape adjacent to the bump 24 at spiro union portion 23 places until shaft 22, recycling pressurizing mold (not shown) with impact style punching press on head 21, head 21 bottom surface 211 places ejections can be made on the ejection face 131 of annular stop part 13 its generation distortion and aperture dwindle, make the ejection face 131 of annular stop part 13 and the smooth shape of perforation 11 top peripheral regions hold face 111 simultaneously and form a coplanar, and be formed with gap between the shaft 22 of this fixed element 2 and the annular stop part 13 of sleeve 1, with avoid because of annular stop part 13 buckles on shaft 22 form blocking between the fixed element that caused 2 and sleeve 1 situation occur, just can rely on elastic element 25 elasticity to support to arrive in 211 places, head 21 bottom surface, and the joint surface 241 of interlock bump 24 is held in and forms block location on the stop surface 132 of annular stop part 13, effectively to prevent that fixed element 2 from emerging in outside sleeve 1, and then make sleeve 1, fixed element 2 presents activity mated condition with outer sleeve 3.

Moreover, sleeve 1 and fixed element 2 are one-body molded by metal material, and the mode of ejaculation is one-body molded an outer sleeve 3 to imbed at the head 21 of fixed element 2, to utilize plastics, or the interface 213 of head 21 and the fixed groove of outer sleeve 3 301 utilize assembling orientation types to be combined into one, and better being embodied as of fixed element 2 forms block location on the annular stop part 13 that can utilize bump 24 to be held in sleeve 1, effectively to prevent that fixed element 2 from emerging in outside sleeve 1, only the Stop structure design of 1, this outer sleeve 3 and sleeve is a lot, also can utilize C type clasp, after packing ring or other stop element (not shown) are socketed on the shaft 22 of fixed element 2, just can rely on elastic element 25 elasticity to support to arrive in 211 places, head 21 bottom surface in fixed element 2 to top offset, its spiro union portion 23 just can be held in and on stop element, form block location, make to dock sleeve pipe 1, fixed element 2 presents activity mated condition with outer sleeve 3, such as use simple and easy modification and the equivalent structure that the utility model specification and graphic content are done to change, all should in like manner be contained in the scope of the claims of the present utility model, close and give Chen Ming.

Please arrange in pairs or groups and consult Fig. 6, Fig. 7, Fig. 8, shown in Fig. 9, be respectively the side cutaway view after the utility model preferred embodiment riveted joint, side cutaway view after release, side cutaway view before the side cutaway view of another preferred embodiment and again a preferred embodiment are locked, in figure, can know and find out, fixing device of the present utility model is for can be applicable to telecommunication bureau's rack, computer server, work table or other tool machine plate group, drawer, it on the equipment that institute's groups such as keyboard frame form or device, is only a kind of state of preferably implementing, also can be using the first plate body 4 and the second plate body 5 respectively as panel and framework, so group forms server casing, and inner for containing host board at server casing, power supply unit, access arrangement is (as hard disc, CD-ROM device etc.), interface card or other electronic equipment.

When sleeve 1 and the first plate body 4 are during in assembling, first the application of force presses on outer sleeve 3 downwards, and the annular that makes outer sleeve 3 supports on the prevent surface 141 that body 31 is held in sleeve 1 ring protuberance 14, and until annular, supporting body 31 just can cross after via the process of resiliently deformable and reset to ring protuberance 14 places, belows, just can rely on elastic element 25 elasticity to support to arrive in 211 places, head 21 bottom surface in fixed element 2, and interlock annular supports the supporting surface 142 formation pivot bush units that body 31 is held in ring protuberance 14, while the suction nozzle of suction means (not shown) being adsorbed in carry out the operations such as follow-up riveted joint or welding on head 21, whole center of gravity can keep stable, be beneficial in contraposition assembling more accurate, be difficult on the head 21 of fixed element 2, being subject to because elastic element 25 elasticity support to arrive in the situation generation that the impact of external force vibrations produces skew or rocks, and after assembling, can reach location really, the quality of improve manufacturing and up-to-standard rate and the effectiveness that reduces production costs.

And in the process of suction means absorption, can utilize suction nozzle to be adsorbed on the head 21 of fixed element 2 has got, and related hole 41 peripheral regions that the positioning part of sleeve 1 12 are aligned with to the first plate body 4, or penetrate downwards in hole 41, can discharge by suction nozzle the head 21 of fixed element 2, recycling stamping jig (not shown) with impact style punching press on head 21, after being squeezed, its elastic element 25 just can be a resiliently deformable displacement, and by head 21 bottom surface 211 places ejections in sleeve 1 top, just hole 41 places that can be related the annular ditch groove of positioning part 12 121 be packed in to the first plate body 4 are combined into one, also can utilize reflow machine (not shown) to carry out follow-up weld job to hole 41 scolder that place brush covers around, or be combined into one via hole 41 places that the first plate body 4 is located in the firm weldering in positioning part 12 that makes sleeve 1 after zinc-plated.

In addition, the mode of the better enforcement utilization riveted joint of the positioning part 12 of sleeve 1 and the hole 41 of the first plate body 4 or welding is combined into one, but when practical application, also can be provided with the internal thread 122 and outside thread 411 mutually screwing togather in the positioning part 12 of sleeve 1 and the hole of the first plate body 4 41 abutted surface places, just can for be bolted in hole 41 outside threads 411 or the internal thread (not shown) place of the first plate body 4 with internal thread 122 or outside thread (not shown), utilize the fixing mode that is spirally connected to be combined into one the positioning part of sleeve 1 12, such as use simple and easy modification and the equivalent structure that the utility model specification and graphic content are done to change, all should in like manner be contained in the scope of the claims of the present utility model, close and give Chen Ming.

Please refer to Figure 10, shown in Figure 11, be respectively the utility model again the side cutaway view of a preferred embodiment after locking and exit after side cutaway view, in figure, can know and find out, when the utility model is when being used, first by the first plate body 4(as panel) horizontal part 42 that had is covered on the second plate body 5(downwards as framework) place, top, because this elastic element 25 before spiro union portion 23 interlockings of fixed element 2 is a resiliently deformable displacement for elasticity supports to arrive in 211 places, head 21 bottom surface, and interlock bump 24 makes after being held on the annular stop part 13 of sleeve 1 spiro union portion 23 be retracted into hole 41 places that can not protrude from vertical component effect 43 in the perforation 11 of sleeve 1, when avoiding the first plate body 4 to cover because of the spiro union portion 23 of fixed element 2 collide on the second plate body 5 the vertical component effect that caused 43 beat displacements make spiro union portion 23 cannot be aligned with accurately lockhole 51 places, or even fixed element 2 is subject to the situation generation of the excessive generation slight crack of impact shear or fracture.

The head 21 extruding elastic elements 25 that laterally press on fixed element 2 as user are a resiliently deformable displacement, its spiro union portion 23 just can be piercing in perforation 11 places of sleeve 1, and by the outside thread of spiro union portion 23 231 in advance interlocking after lockhole 51 is interior, recycling electric tools or hand tools (as screwdriver or spanner etc.) drive in spiro union portion 23 fast locks and turn for butting up against actuating part 212 on head 21, and the vertical component effect 43 of interlock the first plate body 4 is closely resisted against the second plate body 5 side edge, make the first plate body 4 and the second plate body 5 utilize the fixing mode of interlocking to be combined into one, spiro union portion 23 deflections that also can prevent fixed element 2 cause the lockhole 51 of the second plate body 5 to produce structural damages or destruction and cannot carry out smoothly interlocking while locking, or even careless manipulation causes having spiro union portion 23 generations to have the situation that collapses tooth or fracture to occur, and then reach structural stability, assemble firm and locate certain effectiveness.

And in the process of fixed element 2 interlockings, can make the annular of outer sleeve 3 support on the ring protuberance 14 that body 31 is held in sleeve 1, and until spiro union portion 23 interlockings of fixed element 2 after the lockhole 51 of the second plate body 5 is interior, just after annular can being supported to the process of body 31 via resiliently deformable and reset, cross ring protuberance 14 places, when the first plate body 4 is subject to affecting of external force, just can rely on the annular of outer sleeve 3 support on the ring protuberance 14 that body 31 is held in sleeve 1, and coordinate elastic element 25 elasticity to support to arrive in 211 places, head 21 bottom surface to there is suitable elasticity prestressing, make the spiro union portion 23 of fixed element 2 be difficult for turn and exit the lockhole 51 in the second plate body 5, and there is stable location and the anti-loose effect of stopping.

When the utility model is wanted to be released to the first plate body 4, only need again to pull on the pulling part 32 of outer sleeve 3, and drive outer sleeve 3 to come interlock can rotate in the head 21 of fixed element 2 thereupon simultaneously, just 23 turns of the spiro union portion of fixed element 2 can be exited to the lockhole 51 in the second plate body 5, and in the process that fixed element 2 exits, also can utilize the annular of outer sleeve 3 to support on the ring protuberance 14 that body 31 is held in sleeve 1 and form pivot bush unit, spiro union portion 23 can be retracted in the perforation 11 of sleeve 1, with this structural design, when the spiro union portion 23 of fixed element 2 exits lockhole 51 place in the second plate body 5, just can rely on outer sleeve 3 to coordinate sleeve 1 interlock the first plate body 4 in the second plate body 5 places, to do the action of exiting in the lump, allow the mode that user can rotate by torsion fast the first plate body 4 and the second plate body 5 be formed to locking or separated state, and there is the simple and easy and plate of operation to plate separation labour-saving effectiveness more.

More than illustrate the utility model just illustrative; and nonrestrictive, those of ordinary skills understand, in the situation that do not depart from the spirit and scope that claim limits; can make many modifications, variation or equivalence, but within all falling into protection domain of the present utility model.

Claims

1. a fixing device, is characterized in that: include sleeve, fixed element and outer sleeve, wherein:

2. fixing device according to claim 1, it is characterized in that: the perforation top peripheral region of this sleeve is formed with the face that holds of smooth shape outwardly, and the upper and lower two side surface places of annular stop part are formed with respectively and can and form a coplanar ejection face and can support the stop surface that forms thereon block location for bump with the face of holding for head bottom surface place's ejection of fixed element.

3. fixing device according to claim 1, is characterized in that: the positioning part outer surface of this sleeve is provided with annular ditch groove.

4. fixing device according to claim 1, is characterized in that: the positioning part of this sleeve is provided with the hole place of default the first plate body internal thread and the outside thread mutually screwing togather.

5. fixing device according to claim 1, it is characterized in that: the prevent surface that is formed with a smooth shape on the ring protuberance of this sleeve, and on the shaft of fixed element, be arranged with an elastic element, its elastic element external diameter is less than head and is greater than the external diameter of sleeve, and by elastic element one end, be held in the prevent surface of ring protuberance, and elastic element the other end elasticity supports to arrive in and in head bottom surface place, is a resiliently deformable displacement.

6. fixing device according to claim 5, is characterized in that: the turnover downwards of the prevent surface place of this liner ring protuberance is formed with and can supports for the annular of outer sleeve body and cross after via resiliently deformable and reseting procedure and encircle protuberance and support the curved arc shape supporting surface that forms thereon pivot bush unit.

7. fixing device according to claim 1, it is characterized in that: the head surface of this fixed element is provided with the actuating part of cross, interior hexagonal groove, rice word groove or hexagon projection, and at head periphery place, be formed with the interface of plural double wedge, embossing face or positioning convex point, and the containing space of outer sleeve top place be provided with can be for the interface of head the fixed groove in conjunction with location, and in head outer periphery place, be formed with pulling part outer sleeve is upper.

8. fixing device according to claim 1, is characterized in that: the head utilization assembling of this fixed element or imbed that the mode of ejaculation is one-body molded this outer sleeve, and the containing space being had by outer sleeve inside covers in sleeve and fixed element outside.

9. fixing device according to claim 1, is characterized in that: the bump external diameter of this fixed element is greater than the external diameter of shaft, and at bump, adjacent to shaft place, is formed with the skewed joint surface that forms block location on the annular stop part that is held in sleeve.

10. fixing device according to claim 1, is characterized in that: on the spiro union portion of this fixed element, have outside thread.