CN203609848U - Mah-jong machine overturn mechanism - Google Patents
Mah-jong machine overturn mechanism Download PDFInfo
- Publication number
- CN203609848U CN203609848U CN201320556900.5U CN201320556900U CN203609848U CN 203609848 U CN203609848 U CN 203609848U CN 201320556900 U CN201320556900 U CN 201320556900U CN 203609848 U CN203609848 U CN 203609848U
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- China
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- rotating shaft
- cam
- mahjong machine
- switching mechanism
- worm gear
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Abstract
The utility model relates to a mah-jong machine overturn mechanism. The mechanism is connected between a desktop and a support base of a jah-jong machine. The mechanism comprises a rotating shaft, a cam, a bayonet lock, a clamp hook, a reset spring, an overturn plate, a frame, a worm wheel and a worm, wherein the worm wheel is engaged with the worm. The rotating shaft is rotatably disposed on the frame. The worm wheel is hinged to the rotating shaft. The worm is rotatably connected to the frame. The rotating shaft is provided with a spline that is disposed at the frame. The center of the worm wheel is provided with a splined hole corresponding to the spline. The overturn plate is fixed to the worm wheel to rotate along with the worm wheel, so as to overturn to approach or depart from the upper end surface of the frame. The bayonet lock is fixed to the side surface, which faces the inner side of the frame, of the overturn plate. An axial position of the bayonet lock is provided with an annular neck. The cam is fixedly connected to the rotating shaft. The clamp hook is hinged to one side of the cam. The beneficial effects are that the cam and the clamp hook are cooperated to drive the clamp hook to rotate and naturally and reliably enter the neck without specific position cooperation between the clamp hook and the neck, and the clamp hook is reliably snapped to the neck.
Description
Technical field
The utility model relates to mahjong machine, relates in particular to a kind of mahjong machine switching mechanism.
Background technology
Mahjong machine will take certain space, and this transports or deposit mahjong machine is all problem, when transportation, can form bulky cargo, increases cost of transportation; Be placed on indoorly, in the time not using, also will occupy an indoor a corner, make this more aobvious narrow with regard to little space.Existing many mahjong machines are all made folded form thus, and its desktop can rotate relative to its supporting seat, desktop are turned to the state that is basically perpendicular to ground in the time of non-working condition from level, thereby greatly save placement space.
The upset of mahjong machine desktop realizes by switching mechanism.Existing mahjong machine switching mechanism is to receive in the connecting ring that desktop downside is corresponding by swivel hook automatic hook under elastic reaction in the time that mahjong machine desktop is turned to horizontal level, guarantees the steady of desktop horizontal level.In the time that desktop need turn to upright position, a corresponding moving runner pushes hook, makes it produce the rotation of throwing off from connecting ring, the every rotation of moving runner pushes once hook for one week, periodically push, until hook and ring be in a correct position, hook is thrown off completely from ring.The defect that this kind of switching mechanism exists be swivel hook usually can not clasp joint in connecting ring, or swivel hook usually can not throw off from connecting ring, effort is taken great energy in the debugging of the installation site of installation and debugging difficulty, especially swivel hook and connecting ring simultaneously.
Summary of the invention
The utility model object is to overcome the deficiency of above prior art, provides a kind of desktop fixing easy, installation and debugging a kind of mahjong machine overturn mechanism device easily, specifically has following technical scheme to realize:
Described mahjong machine switching mechanism, be connected between the desktop and supporting base of mahjong machine, comprise, the turnover panel of rotating shaft, cam, bayonet lock, grab, return spring, the described desktop of connection and be connected to support on described supporting base and intermeshing worm gear, worm screw, described rotating shaft is arranged on support rotationally, described worm gear is rotationally connected with in described rotating shaft, described worm screw is rotatably connected on described support, and rotating shaft is provided with spline and is supported on support; Worm screw center is provided with the splined hole corresponding with described spline, and worm screw is engaged in by splined hole on the spline of rotating shaft, and spline has gap with the corresponding keyway in splined hole, and described turnover panel is fixed on worm gear; Described bayonet lock is fixed on turnover panel on a side of support inner side; Described cam is fixedly connected in rotating shaft, grab is hinged on cam one side and forms first arm of force and second arm of force that rotate around pin joint, described return spring is connected on first arm of force, contact site pressure on second arm of force is touched in the gabarit of cam, and the Access Division on second arm of force is corresponding with the bayonet lock of turnover panel.
The further design of described mahjong machine switching mechanism is, a circumferential position of described bayonet lock is provided with annular draw-in groove, and insert in the draw-in groove of bayonet lock the Access Division of described grab.
The further design of described mahjong machine switching mechanism is, described grab is a rod member, and described contact site is an arc-shaped convex that protrudes from rod member, and described Access Division is arranged on the end of described second arm of force, for protruding from the projection of rod member, and have and the suitable cancave cambered surface of described draw-in groove.
The further design of described mahjong machine switching mechanism is, described return spring one end is connected in first arm of force of grab, and the other end is connected on described support.
The further design of described mahjong machine switching mechanism is, described support is provided with two gripper shoes of placing up and down, and the correspondence position of two gripper shoes is respectively equipped with concentric circular hole, and the two ends of worm screw are supported on described circular hole by bearing respectively.
The further design of described mahjong machine switching mechanism is, described worm gear is that central angle is the incomplete worm gear of 90 degree, and described turnover panel is connected to radially on section of this worm gear.
The further design of described mahjong machine switching mechanism is, described turnover panel is fixed on worm gear by a top board, and described top board and worm gear one end face are affixed.
The further design of described mahjong machine switching mechanism is, the gabarit of described cam is the circular arc being connected by smooth camber line.
Mahjong machine switching mechanism of the present utility model rotated snap fit and is naturally entered reliably draw-in groove by cam and coordinating of grab, did not need coordinating of snap fit and draw-in groove ad-hoc location therebetween, made grab be connected in draw-in groove very reliable.Grab from draw-in groove throw off be utilize keyway and spline appropriate gap produce relatively rotate promote, both made drive mechanism very succinct, make again throw off move very reliable.Because grab is only required corresponding to draw-in groove position, when installation, grab freely rotates and just can proceed to draw-in groove, there is no ad-hoc location demand, so installation and debugging are very convenient simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of mahjong machine switching mechanism.
Fig. 2 is mahjong machine switching mechanism three-dimensional structure schematic diagram (not containing turnover panel).
Fig. 3 is the top view of switching mechanism shown in Fig. 2.
Fig. 4 is the cutaway view at the A-A place of switching mechanism shown in Fig. 3.
Fig. 5 is the annexation schematic diagram of worm screw, worm screw rotating shaft and cam.
Fig. 6 is the top view of annexation schematic diagram shown in Fig. 5.
Fig. 7 is the cutaway view at the C-C place in annexation schematic diagram shown in Fig. 5.
Fig. 8 is the radial cross-section of Fig. 4 worm screw.
Fig. 9 is clamping pin structure schematic diagram.
In figure, 1-support, 2-rotating shaft, 3-top board, 31-turnover panel, 4-worm screw, 41-keyway, 42-splined hole, 43-gap, 5-grab, 6-worm gear, 7-bayonet lock, 8-gripper shoe, 9-return spring, the rotating shaft of 10-worm screw, 101-spline, 11-cam.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model scheme is elaborated.
As Fig. 1-9, the mahjong machine switching mechanism that the present embodiment provides, be connected between the desktop and supporting base of mahjong machine, comprise rotating shaft 2, cam 11, bayonet lock 7, grab 5, return spring 9, connect desktop turnover panel 31, be connected to support 1 on supporting base and intermeshing worm gear 6, worm screw 4.Rotating shaft 2 is rotationally to vehicle-mounted bracket 1, and worm gear 6 is articulated with in rotating shaft 2.Worm screw 4 is rotatably connected on support 1, and worm screw rotating shaft 10 is provided with spline 101 and is supported on support 1.Worm screw 4 centers are provided with the splined hole corresponding with spline 101 42, and worm screw 4 is engaged on the spline 101 of worm screw rotating shaft 10 by splined hole 42.Spline 101 has gap 43 with the corresponding keyway 41 in splined hole 42.In the time that initial rotation is done in rotating shaft 2, worm gear 6 has relatively rotating for gap 43 with rotating shaft 2.Turnover panel 31 is fixed on worm gear 6, with worm gear 6 rotate do to support 1 upper surface laminating or away from upset.Bayonet lock 7 is fixed on turnover panel 31 on a side of support 1 inner side, and an axial location of bayonet lock 7 is provided with annular draw-in groove.Cam 11 is fixedly connected in rotating shaft 2, and grab 5 is hinged on cam 11 1 sides and forms first arm of force 51 and second arm of force 52 that rotate around pin joint M.The gabarit of the cam 11 that the present embodiment adopts is the circular arc being connected by smooth camber line.Return spring 9 is connected on first arm of force 51, and contact site 521 pressures on second arm of force 52 are touched in the gabarit of cam 11.Bayonet lock 7 when Access Division 522 on second arm of force fits in support 1 upper surface with turnover panel 31 is corresponding, and in the time that contact site pressure contacts the corresponding gabarit of cam 11 minimum rotation radius, rotate in the draw-in groove that inserts bayonet locks 7 to bayonet lock 7 Access Division.
One circumferential position of above-mentioned bayonet lock 7 is provided with annular draw-in groove, and insert in the draw-in groove of bayonet lock 7 Access Division of grab 5.
Above-mentioned grab 5 is a rod member, and its contact site 521 is for protruding from an arc-shaped convex of rod member, and its Access Division 522 is arranged on the end of described second arm of force, for protruding from the projection of rod member, and has and the suitable cancave cambered surface of described draw-in groove.
For worm screw 4 is better supported, on support 1, be provided with two gripper shoes 8 of placing up and down.The correspondence position of two gripper shoes 8 is respectively equipped with concentric circular hole, and the two ends of worm screw 4 are supported on circular hole by bearing respectively.
Further, return spring 9 one end connect grab 5 in first arm of force of grab, and the other end is connected on support 1.
In order better turnover panel 31 to be connected on worm gear 6, adopt a top board 3, turnover panel 31 is connected with worm gear 6 by this top board 3.The both ends of the surface of top board 3 correspondences respectively with turnover panel 31 corresponding side surface and worm gear 6 radially section be connected.
When switching mechanism work of the present invention, turnover panel 31 overturns to support 1 under worm gear 6 drives, in the time that turnover panel 31 is turned to the upper surface that approaches support 1, the draw-in groove 71 of the bayonet lock 7 on turnover panel 31 faces the Access Division 522 that is connected in the grab on support, now worm and gear 4 still rotates in engagement, the contact site 521 of grab 5 is pressed and is touched in the gabarit of cam 11, because the radius of gyration difference of cam 11 makes grab 5 do corresponding rotation, in the time that pressure contacts the corresponding gabarit of cam 11 minimum rotation radius, the angle of a maximum is rotated in Access Division 521 to bayonet lock 7 directions, and insert in the draw-in groove 71 of bayonet lock 7, grab 5 just pins turnover panel 31 like this, when turnover panel 31 is fitted (parallel with upper surface) with support upper surface, worm and gear stops engaging rotation.
In the time that needs are opened turnover panel 31, make motor (not shown) drive rotating shaft 2 to do reverse rotation, cam 11 synchronously rotates with rotating shaft 2, because the keyway 41 on worm screw and the spline 101 in worm screw rotating shaft 10 exist gap 43, worm screw 4 was not rotated with worm screw rotating shaft 10 in the very first time, the rotation time difference in a gap 43 of hysteresis, within this time difference, cam 11 promotes grab 5 by the contact site 521 on grab 5 and rotates around pin joint M, in the time that contact site 51 pressures contact the corresponding gabarit of cam 11 maximum rotating radius, Access Division 521 is to the angle of rotating a maximum away from bayonet lock 7 directions, make the Access Division 522 of grab 5 front ends leave bayonet lock 7, turnover panel disengagement is connected with support, remove turnover panel 31 and support snap close state.Worm screw rotating shaft 10 is rotated further, and keyway 41 is eliminated in the gap 43 of rotation direction with spline 101, and worm screw rotating shaft 10 drives worm screw to rotate, and worm gear engages rotation thereupon, and turnover panel 31 does the upset away from support 1 under worm gear 6 drives, until turnover panel is opened completely.
Claims (8)
1. a mahjong machine switching mechanism, be connected between the desktop and supporting base of mahjong machine, it is characterized in that, comprise, the turnover panel of rotating shaft, cam, bayonet lock, grab, return spring, the described desktop of connection and be connected to support on described supporting base and intermeshing worm gear, worm screw, described rotating shaft is arranged on support rotationally, described worm gear is rotationally connected with in described rotating shaft, and described worm screw is rotatably connected on described support, and rotating shaft is provided with spline and is supported on support; Worm screw center is provided with the splined hole corresponding with described spline, and worm screw is engaged in by splined hole on the spline of rotating shaft, and spline has gap with the corresponding keyway in splined hole, and described turnover panel is fixed on worm gear; Described bayonet lock is fixed on turnover panel on a side of support inner side; Described cam is fixedly connected in rotating shaft, grab is hinged on cam one side and forms first arm of force and second arm of force that rotate around pin joint, described return spring is connected on first arm of force, contact site pressure on second arm of force is touched in the gabarit of cam, and the Access Division on second arm of force is corresponding with the bayonet lock of turnover panel.
2. mahjong machine switching mechanism according to claim 1, is characterized in that, a circumferential position of described bayonet lock is provided with annular draw-in groove, and insert in the draw-in groove of bayonet lock the Access Division of described grab.
3. mahjong machine switching mechanism according to claim 2, it is characterized in that, described grab is a rod member, described contact site is an arc-shaped convex that protrudes from rod member, described Access Division is arranged on the end of described second arm of force, for protruding from the projection of rod member, and have and the suitable cancave cambered surface of described draw-in groove.
4. according to the mahjong machine switching mechanism described in claim 1-3 any one, it is characterized in that, described return spring one end is connected in first arm of force of grab, and the other end is connected on described support.
5. mahjong machine switching mechanism according to claim 1, is characterized in that, described support is provided with two gripper shoes of placing up and down, and the correspondence position of two gripper shoes is respectively equipped with concentric circular hole, and the two ends of worm screw are supported on described circular hole by bearing respectively.
6. mahjong machine switching mechanism according to claim 1, is characterized in that, described worm gear is that central angle is the incomplete worm gear of 90 degree, and described turnover panel is connected to radially on section of this worm gear.
7. mahjong machine switching mechanism according to claim 1, is characterized in that, described turnover panel is fixed on worm gear by a top board, and described top board and worm gear one end face are affixed.
8. mahjong machine switching mechanism according to claim 1, is characterized in that, the gabarit of described cam is the circular arc being connected by smooth camber line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556900.5U CN203609848U (en) | 2013-09-09 | 2013-09-09 | Mah-jong machine overturn mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556900.5U CN203609848U (en) | 2013-09-09 | 2013-09-09 | Mah-jong machine overturn mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203609848U true CN203609848U (en) | 2014-05-28 |
Family
ID=50762532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320556900.5U Expired - Fee Related CN203609848U (en) | 2013-09-09 | 2013-09-09 | Mah-jong machine overturn mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203609848U (en) |
-
2013
- 2013-09-09 CN CN201320556900.5U patent/CN203609848U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20180909 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |