Summary of the invention
It is an object of the invention to provide a kind of axis hole locking device.The arrangement achieves the good locking device of both axis holes, simple in construction, easy to use.
In order to realize above-mentioned purpose, present invention employs following technical scheme:
A kind of axis hole locking device, this device includes the first rotatable engagement portion, rotating shaft and the second rotatable engagement portion, described rotating shaft includes rotating shaft body, limiting component and elastomeric element, one end of rotating shaft body is fixing with the first rotatable engagement portion to be connected, it is provided with axis hole in second rotatable engagement portion, described rotating shaft body is arranged in axis hole, and described elastomeric element is arranged between the second described rotatable engagement portion and described rotating shaft body；Limiting component is connected through axis hole and described rotating shaft body are fixing, annular convex ring it is provided with in the middle part of the inner ring of axis hole, it is circumferentially provided with multiple draw-in groove bottom the inner ring of the outside axis hole of annular convex ring, the outside of described limiting component is provided with position limiting convex ring, position limiting convex ring offsets with annular convex ring, the outer ring circumference of the outside limiting component of position limiting convex ring is circumferentially provided with and multiple latches of draw-in groove phase clamping, the second rotatable engagement subordinate presses when, draw-in groove departs from clamping with latch, and the second rotatable engagement portion can rotate in rotating shaft.Above-mentioned a kind of rotating shaft and the structure in the second rotatable engagement portion, it is achieved that both good locking devices, simple in construction, easy to use.
As further improving, the middle part of described limiting component is provided with axle portion, and the inner ring of the second axis hole is provided with annular convex ring, and axle portion matches with the outer ring of annular convex ring；Or, the inner ring of the second axis hole is circumferentially provided with a plurality of positive stop strip, matches in the outer ring that axle portion is constituted with a plurality of positive stop strip.
As further improving, the outer ring of described limiting component is axially provided with a plurality of second gathering sill, and the second described rotating shaft body is provided with axis hole, and axially arranged a plurality of second gib block of axis hole inner ring, the second gib block is arranged in the second gathering sill.
As further improving, described elastomeric element is spring.
Due to the fact that and have employed above-mentioned technical scheme, the arrangement achieves the good locking device of both axis holes, simple in construction, easy to use.
Accompanying drawing explanation
Fig. 1 is seat tray detailed description of the invention one angled arrangement schematic diagram of the present invention.
Fig. 2 is another angled arrangement schematic diagram of seat tray detailed description of the invention of the present invention.
Fig. 3 is the explosive view of seat tray detailed description of the invention of the present invention.
Fig. 4 is the first rotatable engagement portion sectional view in seat tray detailed description of the invention of the present invention.
Fig. 5 is the second rotatable engagement portion sectional view in seat tray detailed description of the invention of the present invention.
Wherein: 1-tray body, 11-mobile phone slot, 12-open cell type saucer, 13-grooved saucer, 14-open slot, the upper fixed pedestal of 2-, fixed pedestal under 3-, 4-clamp port, 5-the first rotating shaft, 51-the first rotating shaft body, 52-release tab, 53-the first elastomeric element, 54-press section, 55-the first latch, 6-the first rotatable engagement portion, 61-the first draw-in groove, 7-the second rotating shaft, 71-the second rotating shaft body, 72-limiting component, 73-the second elastomeric element, 74-the second latch, 8-the second rotatable engagement portion, 81-the second draw-in groove, 9-screw rod, 10-pass groove, 101-tightens handle.
Detailed description of the invention
For making those skilled in the art be better understood from technical scheme, the present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is seat tray detailed description of the invention one angled arrangement schematic diagram of the present invention, and Fig. 2 is another angled arrangement schematic diagram of seat tray detailed description of the invention of the present invention, and Fig. 3 is the explosive view of seat tray detailed description of the invention of the present invention.Can be seen that the seat tray in an embodiment of the present invention includes tray body 1, upper fixed pedestal 2 and lower fixed pedestal 3；Upper fixed pedestal 2 includes universal connecting base and firm banking, and universal connecting base is arranged on firm banking, and universal connecting base is provided with the locking member of locking universal connecting base universal rotational, and described tray body 1 is fixing or dismantled and assembled is arranged on described universal connecting base；Described firm banking and the internal all concave inward structures of lower fixed pedestal 3, the clamp port 4 of clamping chair framework can be formed when the two snaps together, and on firm banking and/or lower fixed pedestal 3, be provided with the locking device being locked at by held object in clamping hole 4.During outdoor use, in utilization, the clamp port 4 between fixed pedestal 2 and lower fixed pedestal 3 can be by fixing on the seat for whole tray body 1.
Owing to the angle of the chair framework of held seat is different, after being installed on chair framework by seat tray, tray body 1 may can not keep level, position to be likely to be restricted.Adjust for realizing tray body 1, in the embodiment of the invention, between firm banking and tray body 1, also set up corresponding universal connecting base.Concrete, described universal connecting base includes the first rotating shaft the 5, first rotatable engagement portion the 6, second rotating shaft 7 and the second rotatable engagement portion 8, and the first rotatable engagement portion 6 uses right-angle structure；One end of first rotating shaft 5 is fixedly connected with firm banking, the other end of the first described rotating shaft 5 is arranged on the one end, right angle in the first rotatable engagement portion 6, first rotatable engagement portion 6 can rotate around the first rotating shaft 5 axle head, and is provided with the first locking device between the first rotating shaft 5 and the first rotatable engagement portion 6；The second described rotating shaft 7 is arranged on the right angle other end in the first rotatable engagement portion 6, and the second rotatable engagement portion 8 can rotate around the second rotating shaft 7 axle head, is provided with the second locking device between described second rotatable engagement portion 8 and described second rotating shaft 7；Described tray body 1 is arranged in described second rotatable engagement portion 8.
Such as Fig. 3, Fig. 4 and Fig. 5, in the embodiment of the invention: the first described rotatable engagement portion 6 is connected with firm banking, the upper end of described firm banking is provided with installing hole, the inner ring of installing hole is provided with collar, collar is circumferentially evenly arranged with radian recess, the outer ring, connection end in the first described rotatable engagement portion 6 is provided with snap ring, snap ring for being uniformly arranged arc boss along outer ring, arc boss is buckled on collar, and the radian of described arc boss is less than or equal to the radian of radian recess.Being provided with the first axis hole in the first rotatable engagement portion 6, the first described rotating shaft 5 is arranged in the first axis hole；First rotating shaft 5 includes the first rotating shaft body 51, release tab 52 and the first elastomeric element 53, and described first rotating shaft body 51 is fixedly mounted on described firm banking；Described release tab 52 is arranged on the first rotating shaft body 51 and can only slide axially with respect to described first rotating shaft body 51, the outer ring of the first rotating shaft body 51 is axially provided with a plurality of first gib block, described release tab 52 end is provided with axis hole, axially arranged a plurality of first gathering sill of axis hole inner ring, the first gib block is arranged in the first gathering sill.The first described elastomeric element 53 is arranged between described first rotating shaft body 51 and described release tab 52 and provides pretension for described release tab 52.The free end of described release tab 52 has press section 54 and is positioned on the downside of described press section 54 and circumferentially distributed multiple first latches 55.Described press section 54 is protruded the first axis hole and is arranged, the first described latch 55 is limited to the end inner ring of the first axis hole, the end inner ring of the first axis hole is provided with multiple first draw-in grooves 61 engaged with described first latch 55, and when press section is pressed for 54 times, described first latch 55 engages with the first draw-in groove 61 disengaging, and rotation in the first rotating shaft 5 can be taken notice of by the first rotatable engagement portion 6.
Additionally, such as Fig. 3, Fig. 4 and Fig. 5, the second described rotating shaft 7 includes the second rotating shaft body 71, limiting component 72 and the second elastomeric element 73, one end of second rotating shaft body 71 is fixing with the first rotatable engagement portion 6 to be connected, it is provided with the second axis hole in second rotatable engagement portion 8, the second described rotating shaft body 71 is arranged in the second axis hole, and the second described elastomeric element 73 is arranged between the second described rotatable engagement portion 8 and described second rotating shaft body 71.Limiting component 72 is connected through the second axis hole is fixing with the second described rotating shaft body 71, inner ring at the second axis hole is circumferentially provided with multiple second draw-in groove 81, the outside of described limiting component 72 is provided with position limiting convex ring, position limiting convex ring offsets with annular convex ring, the outer ring circumference of the outside limiting component 72 of position limiting convex ring is circumferentially provided with multiple second latches 74 with the second draw-in groove 81 phase clamping, the when of pressure for 8 times in the second rotatable engagement portion, second draw-in groove 81 and the second latch 74 depart from clamping, and the second rotatable engagement portion 8 can rotate in the second rotating shaft 7.As it is shown in figure 5, the middle part of limiting component 72 is provided with axle portion, the inner ring of the second axis hole is circumferentially provided with a plurality of positive stop strip, matches in the outer ring that axle portion is constituted with a plurality of positive stop strip.The outer ring of described limiting component 72 is axially provided with a plurality of second gathering sill, and the second described rotating shaft body 71 is provided with axis hole, and axially arranged a plurality of second gib block of axis hole inner ring, the second gib block is arranged in the second gathering sill.
So, first elastomeric element 53 is in compressive state under normal circumstances, make the press section 54 on release tab 52 be inserted in the end through hole in the first rotatable engagement portion 6, and make the first latch 55 and the first mutual clamping of draw-in groove 61 make the first rotatable engagement portion 6 can not rotate around the first rotating shaft 5；And when needing to rotate, pressing press section 54 is continued extruding the first elastomeric element 53, is made to untie between the first draw-in groove 61 and the first latch 55 cooperation, so that it may rotate the first rotatable engagement portion 6；Same, the second elastomeric element 73 is in compressive state under normal circumstances, and second draw-in groove 81 in the second rotatable engagement portion 8 and the second latch 74 of limiting component 72 coordinate, make the second rotatable engagement portion 8 not rotate；When needs adjust tray body 1, promote the second rotatable engagement portion 8 to move to the second rotating shaft body 71, make the second latch 74 and the second draw-in groove 81 untie cooperation, rotate the second rotatable engagement portion 8.
In a particular application, the first elastomeric element 53 and the second elastomeric element 73 can be all stage clip, it is possible to for the other kinds of elastomeric element providing elastic-restoring force.The first foregoing rotating shaft 5 and the first rotatable engagement portion the 6, second rotating shaft 7 and the second rotatable engagement portion 8 all use the clamping connected mode that draw-in groove and latch coordinate, and may be used without the other kinds of mode that connects and fixes and the most also can not use elastomeric element in other are embodied as；Certainly, in other are embodied as, also can not use clamping connected mode, but use the connected mode such as frictionally secured.
Such as Fig. 3, in the specific embodiment of the invention, tray body 1 and the second rotatable engagement portion 8 can be Demountable.In detailed description of the invention shown in the drawings, tray body 1 and the second rotatable engagement portion 8 have employed the mode of removably connecting, it is simple to the replacing of tray body 1 and carrying, and are suitable for various application scenarios.Concrete, dovetail groove and spacing preiection can be set on the downside of tray body 1, the second rotatable engagement portion 8 arranges corresponding auxiliary section；Certainly, it is possible to dovetail groove and spacing preiection are arranged in the second rotatable engagement portion 8.
It addition, from Fig. 1 and Fig. 2, additionally, arranging bottle holder 13, saucer 12 and bar shaped slot 11 on Fig. 1 and Fig. 2, tray body, bar shaped slot 11 is positioned at the top outside dovetail groove, bottle holder 13 is for being arranged on cylindrical recess in tray body, and the bottom of described cylindrical recess is provided with the second through hole.Saucer 12 is arranged on conical recesses in tray body, arranges the first through hole bottom conical recesses, and the sidewall of conical recesses is connected with bar shaped groove 14, and described bar shaped groove 14 is L-shaped in tray body plane.Bar shaped groove 14 the inner communicates with the first through hole, and the inner side of described tray body prunes one jiao, and described bar shaped groove 14 outer end extends to prune the marginal center of a jiao.There is bottle holder and mobile phone slot 11, it is simple to holding water bottle, mobile phone in tray body 1 in the specific embodiment of the invention.Saucer 12 is easy to the placement of the glasses such as goblet.
Such as accompanying drawing 1-3, in the specific embodiment of the invention, the clamping connected mode of firm banking and lower fixed pedestal 3 can be as follows: have the screw rod 9 being articulated and connected on firm banking, screw rod 9 has screw thread；In the side of lower fixed pedestal 3, there is pass groove 10；Pass groove 10 is arranged along the Plane of rotation of screw rod 9；When upper fixed pedestal 2 and lower fixed pedestal 3 near after, screw rod 9 cocker enters pass groove 10.Free end at screw rod 9 also has tightens handle 101, tightens handle 101 and screw rod 9 threaded engagement and the sectional dimension sectional dimension more than pass groove 10；Handle 101 is tightened in rotation makes its bottom surface rotating and pushing against lower fixed pedestal 3 around screw rod 9 just can make to be fixedly clamped between firm banking and lower fixed pedestal 3, forms aforesaid clamp port 4.As can be seen from the figures, firm banking and lower fixed pedestal 3 are respectively provided with pass groove 10, facilitate various in the case of clamping screw rod 9.Certainly, screw rod 9 also can be hinged on lower fixed pedestal 3, and is provided only on firm banking by pass groove 10.Additionally, the mode that connects and fixes described in the present invention is not limited merely to connecting and fixing of above structure, it is possible to connect and fix for other kinds of.
In the specific embodiment of the invention, of course for adapting to different held objects, described firm banking and lower fixed pedestal 3 are respectively arranged with clamping part in the position of clamp port 4, the inwall of clamping part is provided with elastic cord breaker, the outside of clamping part arranges fixing bar, and on firm banking and lower fixed pedestal 3, it being provided with fixing hole, described fixing bar is plugged in fixing hole.So on the one hand, elastic cord breaker preferably can be fitted with chair framework by frictional force by fixing for seat tray tight.Additionally can also be suitable for different gripping objects by changing clamping part by various sizes of clamping part.Certainly, even if being not provided with clamping part, as long as the size of clamp port 4 and chair framework size coupling ensure that pallet is firmly secured on seat.
Above the seat tray in the embodiment of the present invention is described in detail.Apply specific case herein principle and the embodiment of the present invention are set forth; the explanation of above example is only intended to help to understand the core concept of the present invention; without departing from the principles of the present invention; also the present invention can be carried out some improvement and modification, these improve and modification also falls within the scope of the present invention.