CN115399586B - Arbitrary reducing runner for compact shelf - Google Patents
Arbitrary reducing runner for compact shelf Download PDFInfo
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- CN115399586B CN115399586B CN202210840751.9A CN202210840751A CN115399586B CN 115399586 B CN115399586 B CN 115399586B CN 202210840751 A CN202210840751 A CN 202210840751A CN 115399586 B CN115399586 B CN 115399586B
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- 238000004804 winding Methods 0.000 claims description 10
- 229910003460 diamond Inorganic materials 0.000 claims description 6
- 239000010432 diamond Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B91/00—Feet for furniture in general
- A47B91/06—Gliders or the like
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B63/00—Cabinets, racks or shelf units, specially adapted for storing books, documents, forms, or the like
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B95/00—Fittings for furniture
- A47B95/02—Handles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
An arbitrarily variable diameter wheel for a compact shelf, comprising: the Y-shaped frame comprises a central cylinder and a plurality of support arms, wherein the circumference of the support arms is arranged on the central cylinder, the inside of the support arms is provided with a cavity, the bottom of the support arms is provided with sliding grooves, the number of the arc arms is consistent with that of the support arms, any arc arm comprises an arc rod part and a straight handle part which are connected, the straight handle part is arranged in the cavity of the support arms, the bottom of the straight handle part is connected with a push rod part, and the push rod part is exposed out of the sliding grooves; the rotary disc is coaxially sleeved outside the central cylinder, a through arc groove is formed in the upper circumference of the rotary disc in an array manner, and the push rod part penetrates through the arc groove; the handle is connected to the arc arm, and the diameter of the rotating wheel can be controlled to be adjusted by controlling the folding state of the handle. The handle is used as a rotation stress part and simultaneously controls the current diameter to be constant, and when the diameter is adjusted, all the arc arms can be linked to synchronously and synchronously act in the same amplitude by only adjusting any one arc arm.
Description
Technical Field
The application relates to the field of variable diameter wheel discs, in particular to a variable diameter rotating wheel for a compact shelf.
Background
The compact shelf is a novel tool suitable for storing book data, files, goods price, file financial certificates and goods in offices, enterprises and institutions, libraries, file rooms, sample rooms and the like, and has the advantages of large storage capacity, space saving and the like compared with the traditional bookshelf, shelf and file shelf, and can store files or data and other articles on the compact shelf.
The integrated chassis is used for bearing the main body frame body, rollers used for pushing the compact shelf to move or turn are arranged on the integrated chassis, rotatable rotating wheels are arranged on the frame body at a certain height, and the rotating wheels are transmitted to the chassis through a power transmission system to drive the chassis rollers to rotate. However, the current rotating wheel is fixed with a constant diameter, namely, the diameter of the disc is constant, in the actual process, according to the mechanical principle, the larger the diameter of the disc is, the larger the moment arm is, the more labor-saving is required for rotation, but the disc needs to adapt to the optimal operation diameter of different operations, so that the diameter of the rotating wheel needs to be adjusted, and the current rotating wheel diameter is fixed after the diameter is adjusted to any diameter, so that the technical problem to be solved by the application is solved.
Disclosure of Invention
The application provides a freely variable diameter runner for a compact shelf to solve the problems presented in the background art, and the application is further described below.
An arbitrarily variable diameter wheel for a compact shelf, comprising:
a Y-shaped frame comprising a central cylinder and a plurality of support arms, wherein the circumference of the support arms is arranged on the central cylinder, the inside of the support arms is a cavity, the bottom of the support arms is provided with a chute,
the number of the arc arms is consistent with that of the support arms, any arc arm comprises an arc rod part and a straight handle part which are connected, the straight handle part is arranged in a cavity of the support arm, the bottom of the straight handle part is connected with a push rod part, and the push rod part is exposed out of the chute;
the rotary disc is coaxially sleeved outside the central cylinder, a through arc groove is formed in the upper circumference of the rotary disc in an array manner, and the push rod part penetrates through the arc groove;
a handle connected to the arc arm;
the inner wall of one support arm is provided with a protruding guide protrusion, one arc arm is matched with the guide protrusion, and a space exists between the guide protrusion and the chute; the bottom of the support arm is provided with a latch facing the chute; the push rod part is sleeved with two rotary drums, a torsion spring arranged outside the push rod part is arranged in the two rotary drums, positioning holes are formed in the two rotary drums, and two free ends of the torsion spring are respectively matched in the positioning holes; the outer walls of the two drums are integrally provided with raised clamping hook parts which can be clamped with or separated from contact with the clamping teeth.
Preferably, the two drums are fixed to the push rod portion by a snap spring.
Preferably, the two hook parts are connected with a first connecting rod, the end parts of the two first connecting rods are pivoted on the same first pivot, the two first connecting rods are respectively pivoted with a second connecting rod, and the two second connecting rods are pivoted on the same second pivot; the first connecting rod, the first pivot, the second connecting rod and the second pivot form a diamond structure; the first pivot or the second pivot is connected with a pull wire.
Preferably, the pull wire is connected to the second pivot, and a through hole is provided on the first pivot, and the pull wire passes through the through hole. The purpose is to limit the first pivot and the second pivot through the stay wire, and maintain the deformation of the diamond-shaped mechanism in the stay wire direction so as to ensure that the two clamping hook parts synchronously act in the same amplitude.
Preferably, the inclined direction of the latch forms an obtuse angle with the pulling force direction of the pull wire. The centrifugal force generated by the rotation of the rotating wheel is counteracted better.
Preferably, the arc arm is provided with a mounting groove at the joint of the arc rod part and the straight handle part, the arc rod part is provided with a through groove communicated with the mounting groove, and the through groove is matched with a movable rod; the arc arm is fixedly connected with a bracket, the handle is pivoted on the bracket through a pivot, and the end part of the handle is provided with a pressing head part with an arc surface; the movable rod is connected with a pressing plate part, and a first spring sleeved on the movable rod is arranged between the pressing plate part and the arc rod part; the mounting groove is internally provided with a movable block, the movable block is connected with a bayonet lock penetrating through the arc rod part, and the movable block is provided with a through movable groove; the bottom of the movable rod is provided with a wedge head part in a wedge shape, the inner wall of the movable groove is provided with an inclined plane in contact with the surface of the wedge head part, and when the movable rod moves downwards, the movable block is pushed to move towards a direction away from the push rod part; the clamping pin is sleeved with a second spring, and the second spring is tightly pressed between the movable block and the inner wall of the mounting groove; the bottom of the movable block is integrally connected with a winding rod, and the stay wire is connected to the winding rod.
Preferably, a positioning protrusion is arranged on one side of the movable block, which is different from the connecting bayonet lock, and a positioning groove communicated with the mounting groove is arranged on the straight handle part, and the positioning protrusion is matched with the positioning groove. The positioning convex function is used for conducting redundant guiding and height fixing on the movable block together with the clamping pin.
Preferably, the support is fixedly provided with a stop block coaxial with the pivot, the stop block is provided with a movable gap, one end of the pivot is provided with a radially protruding stop protrusion, the stop protrusion is positioned in the movable gap, and the pivot is in non-rotary connection with the handle. The stop block is used for limiting the rotation angle range of the handle, limiting the handle in the rotation process and eliminating the rotation freedom degree of the handle.
The beneficial effects are that: compared with the prior art, the application can control whether the diameter of the rotating wheel is allowed to be adjusted by controlling the folding state of the handle 4, the handle 4 is used as a rotation stress part, the current diameter is controlled to be constant, and when the diameter is adjusted, all the arc arms can be linked to synchronously and synchronously act in the same amplitude by only adjusting any one arc arm.
Drawings
Fig. 1: a top view of the inventive wheel;
fig. 2: a cross-sectional view of the structure at A-A in fig. 1;
fig. 3: an enlarged schematic view of the structure at a in fig. 2;
fig. 4: an enlarged schematic view of the structure at B in fig. 2;
fig. 5: a structural schematic drawing of the diamond-shaped structure pulling rotary drum;
fig. 6: schematic cooperation of the pivot and the stop block;
in the figure: y-shaped frame 1, center barrel 101, arm 102, chute 103, guide projection 104, space 105, latch 106, arc arm 2, arc lever 201, straight lever 202, push rod 203, mounting groove 204, through groove 205, positioning groove 206, turntable 3, arc groove 301, handle 4, ram 401, drum 5, positioning hole 501, trip portion 502, snap spring 6, torsion spring 7, first link 8, first pivot 9, second link 10, second pivot 11, pull wire 12, movable lever 13, pressure plate 131, wedge head 132, bracket 14, stop block 141, movable gap 142, pivot 15, stop projection 151, first spring 16, movable block 17, movable groove 171, inclined surface 172, wire winding lever 173, positioning projection 174, trip pin 18, second spring 19.
Detailed Description
A specific embodiment of the present application will be described in detail with reference to fig. 1-6.
Referring to fig. 1-4, an arbitrarily variable diameter runner for a compact shelving comprises a Y-shaped frame 1, wherein the Y-shaped frame 1 comprises a central cylinder 101 and support arms 102 which are integrally connected, the number of the support arms 102 is three, the support arms 102 are circumferentially arrayed on the central cylinder 101, a cavity is formed in the support arms 102, a sliding groove 103 is formed in the bottom of each support arm to communicate the cavity with the outside of the support arm, and the central cylinder 101 is connected to an input end of a mechanism such as a compact shelving integrated chassis; any support arm 102 is connected with an arc arm 2, the arc arm 2 comprises an arc rod part 201 and a straight handle part 202 which are integrally connected, the straight handle part 202 is arranged in a cavity of the support arm 102, the straight handle part 202 can slide relative to the cavity under the guidance of the cavity, the bottom of the straight handle part 202 is integrally connected with a push rod part 203, and the push rod part 203 is exposed out of the chute 103; the center cylinder 101 is coaxially sleeved with a rotary disc 3, the rotary disc 3 is provided with through arc grooves 301 in a circumferential array, and the push rod part 203 penetrates through the arc grooves 301.
The Y-shaped frame 1, the arc arms 2 and the turntable 3 form a radial synchronous action structure, specifically, any arc arm 2 is controlled to slide radially relative to the Y-shaped frame 1, the turntable 3 is pushed to rotate by a certain angle through the contact action with the inner wall of the arc groove 301 when the push rod part 203 moves synchronously and radially, the rotating turntable 3 pushes the rest of the push rod parts 203 to move radially, and then the rest of the arc arms 2 are linked to slide radially relative to the Y-shaped frame 1, namely, when acting on any arc arm 2, the rest of the arc arms 2 can be linked to move synchronously through the turntable 3, so that all the arc arms 2 move synchronously and in the same amplitude.
A handle 4 is connected to one of the arc arms 2, said handle 4 being adapted to be operated by an operator to drive the Y-shaped frame 1 in rotation.
Through above-mentioned structure and theory of action adjustable runner to arbitrary diameter, Y shape frame 1, arc arm 2, the centroid and the focus of carousel 3 are nearly coincident, but in the rotation in-process, arc arm 2 has the risk of breaking away from with Y shape frame 1 under the effect of centrifugal force, and this embodiment is fixed current diameter after adjusting to arbitrary diameter through following technical scheme: the inner wall of a support arm 102 of the Y-shaped frame 1 is provided with a protruding guide protrusion 104, an arc arm 2 is matched with the guide protrusion 104, and a space 105 is reserved between the guide protrusion 104 and a chute 103; the bottom of the support arm 102 is provided with a latch 106 facing the chute 103, the push rod part 203 is sleeved with two rotary drums 5, the two rotary drums 5 are attached to each other, the two rotary drums 5 are fixed at a fixed height on the push rod part 203 through a clamp spring 6, and the two rotary drums 5 have relative rotation freedom degrees; a torsion spring 7 sleeved outside the push rod part 203 is arranged in the two drums 5, positioning holes 501 are formed in the two drums 5, and two free ends of the torsion spring 7 are respectively matched in the positioning holes 501; the outer walls of the two drums 5 are integrally provided with protruding clamping hook portions 502, and the clamping hook portions 502 can be clamped with or separated from contact with the clamping teeth 106.
When the diameter of the current rotating wheel needs to be changed, the clamping hook parts 502 of the two rotating cylinders 5 are driven to rotate in opposite directions, namely the included angle between the two clamping hook parts 502 is reduced, the torsion spring 7 recovers deformation and energy storage to be reduced, the clamping hook parts 502 are separated from the clamping teeth 106 at the moment, and the diameter of the rotating wheel can be changed in a linkage manner by pulling the arc arm 2 at the moment; after the rotating wheels are adjusted to the target diameter, the two rotating cylinders 5 are driven by external power to rotate in opposite directions, the included angle between the two clamping hook portions 502 is increased, the clamping hook portions 502 and the clamping teeth 106 are restored to be in a clamping state, the torsion springs 7 deform and store energy, the rotating wheels are rotated at the moment, and the arc arms 2 are fixed relative to the Y-shaped frame based on the clamping state between the clamping hook portions 502 and the clamping teeth 106.
Referring to fig. 5, two hook portions 502 are connected with a first connecting rod 8, the end portions of the two first connecting rods 8 are pivoted to the same first pivot 9, two first connecting rods 8 are respectively pivoted to second connecting rods 10, two second connecting rods 10 are pivoted to the same second pivot 11, and the first connecting rods 8, the first pivot 9, the second connecting rods 10 and the second pivot 11 form a diamond structure; the second pivot 11 is connected with a pull wire 12, and the pull wire 12 is connected to a pull-close assembly for driving the two drums 5 to rotate synchronously.
After reaching the target diameter, the pull wire 12 is pulled to control the clamping hook 502 to be clamped with the clamping tooth 106 so as to fix the current diameter: after the pull wire 12 is pulled, the pull wire 12 is linked to deform in a diamond-shaped structure, the included angle of the two first connecting rods 8 is increased, the two rotating cylinders 5 are linked to rotate in opposite directions, namely, the included angle of the two clamping hook parts 502 is increased, the clamping hook parts 502 are abutted against the clamping teeth 106, the arc arm 2 is pulled outwards in the pull wire direction, the push rod part 203 moves forwards a small distance, namely, is blocked on the clamping teeth 106, and at the moment, the current diameter of the rotating wheel is kept unchanged under the action of centrifugal force; when the diameter of the rotating wheel needs to be changed, the pulling force of the pull wire 12 on the diamond-shaped structure is released, at the moment, the two rotating cylinders 5 rotate under the elastic force of the restoring deformation of the torsion spring 7, the clamping hook part 502 is separated from the clamping tooth 106, the separated instant push rod part 203 (the arc arm 2) has relative displacement relative to the clamping tooth 106 (the Y-shaped frame 1), in practice, the operator can push the arc arm 2 instead of only relying on the elastic force of the torsion spring 7, the aim of overcoming the friction force between the arc arm 2 and the Y-shaped frame 1 is fulfilled, and the elastic force of the torsion spring 7 maintains the separation state of the clamping hook part 502 and the clamping tooth 106 so as to conveniently adjust the diameter of the rotating wheel.
The two drums 5 are vertically sleeved on the push rod 203, and the hook portions 502 thereon are matched with the latch 106, in this embodiment, the two hook portions 502 are also staggered in height, but the lengths of the two hook portions meet the requirement of being in full contact with the latch 106. At this time, one first link 8 is located at the top of the upper hook 502, and the other first link 8 is located at the bottom of the lower hook 502, i.e. there is a height difference between the two first links 8 and the second link 10, and the height difference is compensated and connected by the first pivot 9 and the second pivot 11, i.e. there is a certain length between the first pivot 9 and the second pivot 11. Based on this, the pull wire 12 is connected to the second pivot 11, and a through hole is provided on the first pivot 9, through which the pull wire 12 passes, so as to limit the first pivot 9 and the second pivot 11 by the pull wire, maintain the deformation of the diamond mechanism in the pull wire direction, and further ensure that the two hook portions 502 act synchronously and in the same amplitude.
The inclined direction of the latch 106 forms an obtuse angle with the pulling force direction of the pull wire, and has a better counteracting effect on the centrifugal force generated by the rotation of the wheel.
According to the foregoing, the handle 4 is operated by an operator to drive the Y-shaped frame 1 to rotate, on one hand, before rotation, the pull wire 12 is required to pull the diamond-shaped structure to enable the hook portion 502 to be clamped with the latch 106, the current diameter of the wheel is fixed, and when the diameter needs to be changed, the pull wire 12 is required to release the pulling force on the diamond-shaped structure; on the other hand, turning the wheel requires the handle 4 to be perpendicular to the arc arm 2, and when the wheel is no longer operated, it is often necessary to fold the handle 4 against the arc arm 2, reducing space occupation. It can be seen that there are two states of the handle 4, and there are two effects of the pull wire 12 on the diamond structure, based on this, the pull force control source of the pull wire 12 in this embodiment is set as the handle 4, that is, the operation component of the present application can be controlled as a single component, and the specific scheme is as follows:
the arc arm 2 is provided with a mounting groove 204 at the joint of the arc rod part 201 and the straight handle part 202, the arc rod part 201 is provided with a through groove 205 communicated with the mounting groove 204, the through groove 205 is matched with a movable rod 13, and the movable rod 13 can move at the through groove 205; the arc arm 2 is fixedly connected with a bracket 14, the handle 4 is pivoted on the bracket 14 through a pivot 15, the handle 4 can rotate around the pivot 15, and the end part of the handle 4 is provided with a pressure head part 401 with an arc surface; the movable rod 13 is integrally connected with a pressing plate part 131, a first spring 16 sleeved on the movable rod 13 is arranged between the pressing plate part 131 and the arc rod part 201, and in the rotating process of the handle 4, the pressing head part 401 has a pushing effect on the pressing plate part 131 and can push the movable rod 13 to move downwards; the installation groove 204 is internally provided with a movable block 17, the movable block 17 is in threaded connection with a bayonet lock 18 penetrating through the arc rod part 201, the bayonet lock 18 has the function of placing the movable block 17 in the installation groove 204 in a detachable connection mode with the movable block 17 when in installation, and positioning the movable block 17 at a certain height, and the movable block 17 is provided with a through movable groove 171; the bottom of the movable rod 13 is provided with a wedge head 132 with a wedge shape, the inner wall of the movable groove 171 is provided with an inclined surface 172 in surface contact with the wedge head 132, the surface contact is used for converting the vertical motion of the movable rod 13 into the horizontal motion of the movable block 17, and the direction of reversing is to push the movable block 17 to move in a direction away from the push rod 203 when the movable rod 13 moves downwards; the second spring 19 is sleeved on the bayonet lock 18, and the second spring 19 is pressed between the movable block 17 and the inner wall of the mounting groove 204; the bottom of the movable block 17 is integrally connected with a winding rod 173, and the stay wire 12 is connected to the winding rod 173.
Further, a positioning protrusion 174 is disposed on a side of the movable block 17 different from the connecting bayonet 18, a positioning groove 206 communicating with the mounting groove 204 is disposed on the straight shank 202, the positioning protrusion 174 is matched with the positioning groove 206, and the positioning protrusion 174 is used for conducting redundant guiding and height fixing on the movable block 17 together with the bayonet 18. The positioning protrusion 174 is in clearance fit with the positioning groove 206, or the straight shank 202 is provided with a vent groove for communicating with the positioning groove 206, so as to avoid the obstruction of the pressure difference to the action of the movable block 17.
Referring to fig. 6, the bracket 14 is fixedly provided with a stop block 141 coaxial with the pivot 15, the stop block 141 has a movable gap 142, one end of the pivot 15 is provided with a radially protruding stop protrusion 151, the stop protrusion 151 is located in the movable gap 142, and the pivot 15 is non-rotatably connected with the handle 4. The function of the stop block 141 is to limit the rotation angle range of the handle 4, for example, 0 to 90 ° in the present embodiment, that is, when the handle 4 is in two extreme positions, the handle is respectively in a state of being folded against the arc arm 2 and a state of being operated by the vertical arc arm 2, and the handle can be limited during rotation, so that the rotation freedom degree is eliminated.
The working principle of the rotating wheel is fully explained in the embodiment:
the central cylinder 101 of the Y-shaped frame 1 of the rotating wheel is sleeved on the input end of a mechanism such as a compact shelf integrated chassis, and the Y-shaped frame 1 and the input end synchronously rotate; when the diameter of the current rotating wheel needs to be changed, the handle 4 is folded to be close to the arc arm 2, the arc arm 2 is pulled outwards or pushed inwards, the length of the cavity inside the support arm 102 of the Y-shaped frame 1 is matched with the straight shank 202 of any arc arm 2, the rotating disc 3 is pushed to rotate a certain angle through the contact action with the inner wall of the arc groove 301 when the push rod 203 moves synchronously and radially, the rotating disc 3 pushes the other push rod 203 to move radially, and then the other arc arms 2 are linked to slide radially relative to the Y-shaped frame 1, namely, the rotating disc 3 can be used for linking the other arc arms 2 to move synchronously and synchronously when acting on any arc arm 2.
When the handle 4 rotates to the state of the vertical arc arm 2 by rotating the rotating wheel through the handle 4 after reaching the target diameter, the stop projection 151 which is radially protruded on the pivot 15 and synchronously rotated with the handle is abutted against the stop block 141 on the bracket 14, and the rotation cannot be continued; meanwhile, in the process of rotating the handle 4, the cambered surface pressing part 401 at the end pushes the pressing plate part 131 downwards to push the movable rod 13 to act downwards and compress the first spring 16, when the movable rod 13 acts downwards, the wedge head 132 at the end of the movable rod 13 pushes the movable block 17 to act in a direction away from the push rod part 203 and compresses the second spring 19 after contacting the inclined surface of the movable groove 171 in the movable block 17, at the moment, the distance between the movable block 17 and the winding rod 173 on the movable block and the push rod part 203 is increased, the winding rod 173 pulls the diamond-shaped structure sleeved on the push rod part 203 through the pull wire 12 connected with the winding rod 173, the included angle of the two first connecting rods 8 is increased, the two rotary drums 5 are linked to rotate in opposite directions, the included angle of the two clamping hook parts 502 is increased, the clamping hook parts 502 are abutted on the clamping teeth 106, the arc pulling arm 2 is pulled outwards in the pull wire direction, and the push rod part 203 moves forwards a small distance to be blocked on the clamping teeth 106, and at the moment, the rotating wheel maintains the current diameter unchanged under the action of the centrifugal force.
When the diameter of the rotating wheel needs to be changed next time, the handle 4 is folded again, the movable rod 13 jacks up the movable rod 13 under the elastic force of the first spring 16 to restore the deformation, the movable block 17 is laterally displaced under the elastic force of the second spring 19 to restore the deformation after losing the blocking of the movable rod 13, the pull wire 12 releases the pull force on the diamond structure at the moment, the arc arm 2 is radially pushed in the direction of reducing the diameter, the two rotating cylinders 5 rotate under the elastic force of the torsional spring 7 to restore the deformation, the clamping hook portion 502 is disengaged from the clamping tooth 106, and the elastic force of the torsional spring 7 maintains the separation state of the clamping hook portion 502 and the clamping tooth 106 so as to adjust the diameter of the rotating wheel.
According to the application, whether the diameter of the rotating wheel is allowed to be adjusted can be controlled by controlling the folding state of the handle 4, the handle 4 is used as a rotation stress part, the current diameter is controlled to be constant, and when the diameter is adjusted, all the arc arms can be linked to move synchronously and in the same amplitude by only adjusting any one arc arm.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (4)
1. An arbitrarily variable diameter wheel for a compact shelving, comprising:
a Y-shaped frame (1) comprising a central cylinder (101) and a plurality of support arms (102), wherein the support arms (102) are circumferentially arrayed on the central cylinder (101), the inside of the support arms (102) is a cavity, the bottom of the support arms is provided with a chute (103),
the number of the arc arms (2) is consistent with that of the support arms, any arc arm (2) comprises an arc rod part (201) and a straight handle part (202) which are connected, the straight handle part (202) is arranged in a cavity of the support arm (102), the bottom of the straight handle part (202) is connected with a push rod part (203), and the push rod part (203) is exposed out of the chute (103);
a rotary disc (3) coaxially sleeved outside the central cylinder (101), the upper circumference of the rotary disc is provided with a through arc groove (301) in an array manner, and the push rod part (203) passes through the arc groove (301);
a handle (4) connected to the arc arm (2);
the inner wall of one support arm (102) is provided with a protruding guide convex (104), one arc arm (2) is matched on the guide convex (104), and a space (105) is reserved between the guide convex (104) and the chute (103); the bottom of the support arm (102) is provided with a latch (106) facing the chute (103); two rotary drums (5) are sleeved on the push rod part (203), a torsion spring (7) sleeved outside the push rod part (203) is arranged in the two rotary drums (5), positioning holes (501) are formed in the two rotary drums (5), and two free ends of the torsion spring (7) are respectively matched in the positioning holes (501); the outer walls of the two drums (5) are integrally provided with raised clamping hook parts (502), and the clamping hook parts (502) can be clamped with or separated from contact with the clamping teeth (106);
the two drums (5) are fixed on the push rod part (203) through the clamp springs (6); the two clamping hook parts (502) are connected with a first connecting rod (8), the end parts of the two first connecting rods (8) are pivoted on the same first pivot (9), the two first connecting rods (8) are respectively pivoted with a second connecting rod (10), and the two second connecting rods (10) are pivoted on the same second pivot (11); the first connecting rod (8), the first pivot (9), the second connecting rod (10) and the second pivot (11) form a diamond structure; the first pivot (9) or the second pivot (11) is connected with a pull wire (12); the stay wire (12) is connected to the second pivot (11), a through hole is formed in the first pivot (9), and the stay wire (12) penetrates through the through hole;
the arc arm (2) is provided with a mounting groove (204) at the joint of the arc rod part (201) and the straight shank part (202), the arc rod part (201) is provided with a through groove (205) communicated with the mounting groove (204), and the through groove (205) is matched with a movable rod (13); a bracket (14) is fixedly connected to the arc arm (2), the handle (4) is pivoted on the bracket (14) through a pivot (15), and the end part of the handle (4) is provided with a pressing head part (401) with an arc surface; the movable rod (13) is connected with a pressing plate part (131), and a first spring (16) sleeved on the movable rod (13) is arranged between the pressing plate part (131) and the arc rod part (201); the mounting groove (204) is internally provided with a movable block (17), the movable block (17) is connected with a bayonet lock (18) penetrating through the arc rod part (201), and the movable block (17) is provided with a through movable groove (171); the bottom of the movable rod (13) is provided with a wedge head part (132) with a wedge shape, the inner wall of the movable groove (171) is provided with an inclined surface (172) contacted with the wedge head part (132), and when the movable rod (13) moves downwards, the movable block (17) is pushed to move towards a direction away from the push rod part (203); the second spring (19) is sleeved on the bayonet lock (18), and the second spring (19) is tightly pressed between the movable block (17) and the inner wall of the mounting groove (204); the bottom of the movable block (17) is integrally connected with a winding rod (173), and the stay wire (12) is connected to the winding rod (173).
2. The arbitrarily variable diameter wheel of claim 1, wherein: the inclined direction of the latch (106) forms an obtuse angle with the pulling force direction of the pull wire.
3. The arbitrarily variable diameter wheel of claim 2, wherein: one side of the movable block (17) which is different from the connecting bayonet lock (18) is provided with a positioning convex (174), the straight shank part (202) is provided with a positioning groove (206) communicated with the mounting groove (204), and the positioning convex (174) is matched with the positioning groove (206).
4. A variable diameter wheel according to claim 3, wherein: the support (14) is fixedly provided with a stop block (141) coaxial with the pivot (15), the stop block (141) is provided with a movable gap (142), one end of the pivot (15) is provided with a radially protruding stop lug (151), the stop lug (151) is positioned in the movable gap (142), and the pivot (15) is in non-rotary connection with the handle (4).
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| CN202210840751.9A CN115399586B (en) | 2022-07-18 | 2022-07-18 | Arbitrary reducing runner for compact shelf |
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| CN202210840751.9A CN115399586B (en) | 2022-07-18 | 2022-07-18 | Arbitrary reducing runner for compact shelf |
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| CN115399586B true CN115399586B (en) | 2023-08-25 |
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| CN216514845U (en) * | 2021-12-07 | 2022-05-13 | 浙江尤夫高新纤维股份有限公司 | Novel rope twisting machine pipe barrel clamping shaft |
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| CN104229371A (en) * | 2014-09-17 | 2014-12-24 | 江西金虎保险设备集团有限公司 | Movable rack body tilting prevention device of compact rack |
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| CN115399586A (en) | 2022-11-29 |
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Denomination of invention: A variable diameter wheel for dense frames Granted publication date: 20230825 Pledgee: Yichun Branch of China Everbright Bank Co.,Ltd. Pledgor: JIANGXI THE JINHU INSURANCE EQUIPMENT GROUP Co.,Ltd. Registration number: Y2024980027684 |