WO2024087889A1 - 一种可升降的滚轮装置 - Google Patents

一种可升降的滚轮装置 Download PDF

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Publication number
WO2024087889A1
WO2024087889A1 PCT/CN2023/116922 CN2023116922W WO2024087889A1 WO 2024087889 A1 WO2024087889 A1 WO 2024087889A1 CN 2023116922 W CN2023116922 W CN 2023116922W WO 2024087889 A1 WO2024087889 A1 WO 2024087889A1
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WO
WIPO (PCT)
Prior art keywords
frame
traction
roller
rotating shaft
component
Prior art date
Application number
PCT/CN2023/116922
Other languages
English (en)
French (fr)
Inventor
杨帅
朱凯
范先锋
张华成
Original Assignee
佛山海尔滚筒洗衣机有限公司
海尔智家股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 佛山海尔滚筒洗衣机有限公司, 海尔智家股份有限公司 filed Critical 佛山海尔滚筒洗衣机有限公司
Publication of WO2024087889A1 publication Critical patent/WO2024087889A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/04—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors
    • B60B33/06—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors mounted retractably
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/04—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors

Definitions

  • the present invention relates to the technical field of lifting devices, and in particular to a lifting roller device.
  • rollers In order to enable equipment to have more and more functions and high utilization, rollers have become an indispensable component. Generally, rollers refer to small wheels set at the bottom of equipment to facilitate the movement of bulky equipment. However, most of the existing equipment has fixed rollers at the bottom, which can only achieve movement but not lifting. Electric lifting rollers are expensive and require a large space, which limits the scope of use.
  • the roller device in patent document KR101595841B1 includes: a gear having a plurality of gear grooves on the edge; and a torque transmission device, which is arranged around the gear and transmits torque by selecting the torque transmission direction of the gear.
  • the torque transmission device includes: an adjustment rod, which can rotate between a first position and a second position; and a position adjustment component, which is used to make the adjustment rod be located in one of the first position and the second position.
  • the adjustment rod can be located in the same gear groove in the first position and the second position. When the adjustment rod is located in any one of the first position and the second position, the torque transmission device can transmit torque in a selected direction to the gear.
  • the adjustment rod has a blocking end including a rotation center.
  • the blocking end changes the direction of pressurization on the gear groove by rotation, thereby determining the torque transmission direction and adjusting the height.
  • the structure of the roller in this patent is relatively simple, but in order to keep the roller level, the user needs to hold the handle and repeatedly move it left and right. The right reciprocating operation may easily cause the user to give up the operation due to excessive physical exertion.
  • the technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a liftable roller device, which drives the traction assembly to move back and forth in the frame through a transmission component, and then drives the lifting assembly to rotate, thereby realizing the lifting and lowering of the roller, which saves the space occupied by the roller device to meet the lifting requirements to a certain extent, has a simple structure and is easy to operate.
  • a lifting roller device comprising:
  • a lifting assembly is rotatably mounted on the frame and is used to lift and lower the roller;
  • a traction assembly is reciprocatably disposed in the frame and connected to the lifting assembly to drive the lifting assembly to rotate;
  • the transmission component is rotatably mounted on one end of the frame, and one end of the transmission component passes through the frame and is movably connected to the traction component to drive the traction component to move back and forth.
  • the traction assembly includes:
  • a traction frame the traction frame is rotatably connected to the lifting assembly
  • the traction component is arranged at one end of the traction frame and is movably connected with the transmission component.
  • the other end of the transmission component is located outside the frame and is relatively fixed to the frame in the extended length direction.
  • the transmission component includes a screw rod, the traction component is provided with a screw hole, and the screw rod is screwed with the screw hole so that the traction component and the transmission component constitute a screw transmission mechanism.
  • the transmission component is relatively fixed to the frame in the extended length direction.
  • the screw is threadedly connected to the screw hole so that the traction component and the transmission component form a screw transmission mechanism. Therefore, the traction component moves along the thread on the screw, which drives the traction frame to move, and then drives the lifting assembly to rotate, and finally realizes the lifting and lowering of the roller.
  • the roller can be adjusted to any height within the allowable lifting height range.
  • one end of the frame is provided with a perforation
  • the transmission component comprises a connecting rod, one end of which passes through the through hole and is rotatably connected to the traction component, and the other end of which remains outside the frame;
  • the connecting rod and the traction component are relatively fixed in axial position.
  • a locking portion is provided on the rod body of the connecting rod, and the locking portion is locked and connected with the frame in the axial direction;
  • the locking portion is an external thread provided on the peripheral wall of the rod body of the connecting rod, and the through hole is provided with an internal thread threadably connected to the external thread.
  • the connecting rod since the through hole is set on the frame, the internal thread of the through hole is threadedly connected to the external thread on the connecting rod.
  • the connecting rod When the connecting rod is rotated, the connecting rod moves axially relative to the frame. Since the axial positions of the connecting rod and the traction component are relatively fixed, the connecting rod drives the traction component and the traction frame to move when it moves, and then drives the lifting assembly to rotate, finally realizing the lifting and lowering of the roller, and the roller can be adjusted to any height within the allowable lifting height range.
  • the rod body of the connecting rod is divided into two sections, namely a first section rod body and a second section rod body;
  • the first section of the rod body is arranged close to the frame, and the diameter of the first section of the rod body is smaller than the diameter of the through hole;
  • the second section of the rod body is arranged close to the traction component, and the second section of the rod body is provided with an external thread which is threadably connected with the internal thread of the perforation.
  • One end of the elastic component is connected to the other end of the frame, and the other end of the elastic component is connected to an end of the traction frame away from the traction component.
  • the elastic component is a spring.
  • the first section of the rod when the first section of the rod is forced to pass through the through hole, it drives the traction assembly to move, and then drives the lifting assembly to rotate, so that the roller is lifted and lowered, and the height of the roller can be quickly adjusted;
  • the second section of the rod when the second section of the rod is close to the frame, the external thread on the second section of the rod is screwed with the internal thread of the through hole, and by rotating the connecting rod, the connecting rod moves axially relative to the frame, further driving the traction assembly to move, and then driving the lifting assembly to further rotate, so that the roller is further lifted and lowered, and in the process of screwing the second section of the rod to the through hole on the frame, the roller can be adjusted to any height within a certain height range.
  • the elastic component has two stretching states:
  • the elastic component pulls the traction assembly back to its original position and the roller is retracted. At this time, the elastic component is stretched by the gravity of the roller and is in a second stretched state.
  • each group of lifting components includes:
  • a first rotating shaft connecting the roller bracket and the roller
  • a second rotating shaft connecting the roller bracket and the frame
  • the roller bracket rotates around the second rotating shaft, and the distance between the first rotating shaft and the second rotating shaft is greater than the distance between the second rotating shaft and the third rotating shaft.
  • the roller bracket rotates around the second rotating shaft, and the distance between the first rotating shaft and the second rotating shaft is greater than the distance between the second rotating shaft and the third rotating shaft. That is, when the roller bracket is rotated by force, in the vertical direction, the distance moved by the traction component is much smaller than the distance moved by the roller, so that it can be used within a limited range.
  • the height of the roller lifting is increased within the space, which greatly saves the space occupied by the roller device to meet the lifting requirements.
  • the traction frame has two parallel side edges;
  • the roller bracket includes two support plates, which are respectively located on both sides of the traction frame and are rotatably connected to the two sides of the traction frame via a third rotating shaft;
  • the support sheet is rotatably connected to the roller via a first rotating shaft, and is rotatably connected to the frame via a second rotating shaft.
  • the supporting sheet is a triangular structure.
  • the present invention has the following beneficial effects compared with the prior art:
  • the present invention provides a liftable roller device, which drives a traction assembly to move back and forth in a frame through a transmission component, thereby driving a lifting assembly to rotate, thereby realizing the lifting and lowering of the roller, and saving the space occupied by the roller device for lifting and lowering to a certain extent.
  • the roller bracket rotates around the second rotating shaft, and the distance between the first rotating shaft and the second rotating shaft is greater than the distance between the second rotating shaft and the third rotating shaft. That is, when the roller bracket is rotated under force, in the vertical direction, the distance moved by the traction component is much smaller than the distance moved by the roller, so that it can increase the height of the roller lifting within a limited space, greatly saving the space occupied by the roller device to meet the lifting requirements.
  • the invention provides a liftable roller device which satisfies multiple functions of movement and lifting and has the characteristics of small occupied space, simple structure and convenient operation.
  • FIG1 is a schematic diagram of the overall structure of a roller device of the present invention.
  • FIG2 is a schematic diagram of a partial structure of an embodiment of the present invention when the roller is retracted
  • FIG3 is a partial structural schematic diagram of an embodiment of the present invention when the roller is lowered
  • FIG4 is a partial structural schematic diagram of another embodiment of the present invention when the roller is retracted
  • FIG5 is a partial structural schematic diagram of another embodiment of the present invention when the roller is lowered;
  • FIG6 is a partial structural schematic diagram of another embodiment of the present invention when the roller is retracted
  • FIG. 7 is a partial schematic diagram of the structure of another embodiment of the present invention when the roller is lowered.
  • the present invention provides a liftable roller device, including a frame 1, on which a lifting assembly is provided, the lifting assembly includes a roller bracket 21, a first rotating shaft 23, a second rotating shaft 24, a third rotating shaft 25 and a roller 22, the roller bracket 21 includes a support sheet 211; a traction assembly is provided in the frame 1, and the traction assembly includes a traction frame 31 and a traction component 32; an elastic component 41 is provided in the frame 1, and a transmission component 5 is also provided on the frame 1.
  • the present invention provides a roller device that can be raised and lowered.
  • the roller device comprises a frame 1 , which is in a cover shape, and the lower end of the frame 1 is at least partially open to leave space for the roller 22 .
  • the frame 1 plays a supporting and connecting role.
  • the roller device further includes a lifting assembly and a traction assembly.
  • the lifting assembly is rotatably mounted on the frame 1 to achieve lifting and lowering of the roller 22 .
  • the lifting components are provided in at least two groups, and each group of the lifting components includes a roller bracket 21, and the roller bracket 21 is rotatably connected to the roller 22, the frame 1 and the traction component respectively.
  • the lifting assembly further includes a first rotating shaft 23 , a second rotating shaft 24 and a third rotating shaft 25 .
  • the first rotating shaft 23 is used to connect the roller bracket 21 and the roller 22 .
  • the second rotating shaft 24 is used to connect the roller bracket 21 and the frame 1 .
  • the third rotating shaft 25 is used to connect the roller bracket 21 and the traction assembly.
  • the roller bracket 21 rotates around the second rotating shaft 24 .
  • the distance between the first rotating shaft 23 and the second rotating shaft 24 is greater than the distance between the second rotating shaft 24 and the third rotating shaft 25. The spacing between.
  • the roller bracket 21 is a cam structure, preferably a triangular cam structure.
  • the roller bracket 21 rotates around the second rotating shaft 24, and the distance between the first rotating shaft 23 and the second rotating shaft 24 is greater than the distance between the second rotating shaft 24 and the third rotating shaft 25. That is, when the roller bracket 21 is rotated under force, in the vertical direction, the distance moved by the traction component is much smaller than the distance moved by the roller 22, so that it can increase the lifting height of the roller 22 within a limited space, greatly saving the space occupied by the roller device to meet the lifting requirements.
  • the traction assembly is reciprocatably disposed in the frame 1 and connected to the lifting assembly to drive the lifting assembly to rotate.
  • the traction assembly includes a traction frame 31 and a traction component 32 .
  • the traction frame 31 has two parallel side edges.
  • the roller bracket 21 includes two support plates 211 , which are respectively located on two sides of the traction frame 31 and are rotatably connected to the two side edges of the traction frame 31 via a third rotating shaft 25 .
  • the support sheet 211 is rotatably connected to the roller 22 via the first rotating shaft 23 , and is rotatably connected to the frame 1 via the second rotating shaft 24 .
  • the support sheet 211 is a triangular structure.
  • the traction component 32 is fixedly connected to the right end of the traction frame 31, and the two are preferably integrally arranged.
  • It also includes a transmission component 5, which is rotatably mounted on one end of the frame 1.
  • One end of the transmission component 5 passes through the frame 1 and is movably connected to the traction component 32 to drive the traction assembly to move back and forth.
  • the other end of the transmission component 5 is located outside the frame 1 and is relatively fixed to the frame 1 in the extended length direction.
  • the transmission component 5 includes a screw 511, and the traction component 32 is provided with a screw hole.
  • the traction component 32 and the transmission component 5 are screwed together with the screw hole to form a screw transmission mechanism.
  • the transmission component 5 can be fixed relative to the frame 1 in the extended length direction in the following manner:
  • One end of the frame 1 is provided with a through hole, one end of the transmission component 5 passes through the through hole, and the other end is provided with two spaced apart stop portions 512, the stop portions 512 are respectively located on the inner side (not shown in the figure) and the outer side of the frame 1, and the outer circumference of the stop portion 512 is larger than the diameter of the through hole.
  • a gasket is provided between the stopper 512 and the frame 1 .
  • the traction component 32 and the transmission component 5 form a screw transmission mechanism by screwing the screw 511 with the screw hole, providing a force for the movement of the traction frame 31; when the traction frame 31 moves back and forth, it drives the roller bracket 21 to rotate around the second rotating shaft 24, which will cause the traction frame 31 to float up and down, and drive the screw 511 to float up and down.
  • a gasket is provided between the stopper 512 of the transmission component 5 and the frame 1 to enable the screw 511 to tilt at a smaller angle to meet the up and down floating of the screw 511 without affecting the screw connection with the screw hole; at the same time, the friction between the transmission component 5 and the frame 1 is reduced, thereby improving the service life.
  • the transmission component 5 is relatively fixed in position with respect to the frame 1 in the direction of the extended length.
  • the screw 511 is screwed to the screw hole so that the traction component 32 and the transmission component 5 form a screw transmission mechanism. Therefore, the traction component 32 moves along the thread on the screw 511, thereby driving the traction frame 31 to move, and then driving the lifting assembly to rotate, thereby finally realizing the lifting and lowering of the roller 22.
  • the roller 22 can be adjusted to any height within the allowable lifting height range.
  • the roller 22 is retracted to the initial state; when the screw 511 is rotated clockwise, the traction member 32 moves rightward along the thread on the screw 511 and drives the traction frame 31 to move rightward, thereby passing through the first
  • the three rotating shafts 25 drive the roller bracket 21 to rotate rightward around the second rotating shaft 24, so that the roller 22 moves downward.
  • the roller 22 is lowered to achieve the function of lifting the device, and then the device is moved by the roller 22;
  • the present invention provides a roller device that can be raised and lowered.
  • One end of the frame 1 is provided with a through hole, and the through hole is provided with an internal thread.
  • the transmission component 5 includes a connecting rod 521 , one end of which passes through the through hole and is rotatably connected to the traction component 32 , and the other end of the connecting rod 521 remains located outside the frame 1 .
  • connection rod 521 and the traction component 32 are relatively fixed in axial position.
  • the relative positions of the connecting rod 521 and the traction component 32 in the axial direction may be fixed in the following manner:
  • the traction component 32 is also provided with a through hole, and one end of the connecting rod 521 passes through the through hole of the traction component 32.
  • Two blocking parts are arranged at intervals on one end of the connecting rod 521, and the two blocking parts are respectively located on both sides of the through hole of the traction component 32;
  • the traction component 32 is provided with a spherical groove, and one end of the connecting rod 521 is provided with a spherical connecting part, the diameter of the spherical connecting part is smaller than the diameter of the spherical groove and larger than the diameter of the spherical groove opening, so that the spherical connecting part can rotate in the spherical groove but cannot fall out.
  • the manner in which the axial positions of the connecting rod 521 and the traction component 32 are relatively fixed is not limited to the above solution, and the connection between the connecting rod 521 and the traction component 32 has a margin that can satisfy the up and down floating of the traction component.
  • a locking portion 522 is provided on the rod body of the connecting rod 521 , and the locking portion 522 is locked and connected to the frame 1 in the axial direction.
  • the locking portion 522 is an external thread provided on the peripheral wall of the rod body of the connecting rod 521, and the through hole is provided with an internal thread that is threadably connected to the external thread.
  • the through hole is set on the frame 1, the internal thread of the through hole is threadedly connected to the external thread on the connecting rod 521.
  • the connecting rod 521 moves axially relative to the frame 1. Since the axial positions of the connecting rod 521 and the traction component 32 are relatively fixed, the connecting rod 521 drives the traction component 32 and the traction frame 31 to move when moving, and then drives the lifting assembly to rotate, finally realizing the lifting and lowering of the roller 22, and the roller 22 can be adjusted to any height within the allowable lifting height range.
  • the rod body of the connecting rod 521 is divided into two sections, namely a first rod body 523 and a second rod body 524 .
  • the first section of the rod body 523 is disposed close to the frame 1 , and the diameter of the first section of the rod body 523 is smaller than the diameter of the through hole.
  • the second rod section 524 is disposed close to the traction component 32 , and an external thread is disposed on the second rod section 524 , which is threadedly connected with the internal thread of the perforation.
  • An elastic component 41 is also included for resetting the traction assembly.
  • One end of the elastic component 41 is connected to the other end of the frame 1 , and the other end of the elastic component 41 is connected to an end of the traction frame 31 away from the traction component 32 .
  • the elastic component 41 is a spring.
  • the first section of the rod body 523 when the first section of the rod body 523 is forced to pass through the through hole, it drives the traction assembly to move, and then drives the lifting assembly to rotate, so that the roller 22 is raised and lowered, and the height of the roller 22 can be quickly adjusted;
  • the second section of the rod body 524 is close to the frame 1, the external thread on the second section of the rod body 524 is screwed with the internal thread of the through hole, and by rotating the connecting rod 521, the connecting rod 521 moves axially relative to the frame 1, further driving the traction assembly to move, and then driving the lifting assembly to further rotate, so that the roller 22 is further raised and lowered, and in the process of screwing the second section of the rod body 524 and the through hole on the frame 1, the roller 22 can be adjusted to any height within a certain height range.
  • the elastic component 41 has two stretching states:
  • the elastic component 41 pulls the traction assembly back to its original position and the roller 22 is retracted. At this time, the elastic component 41 is stretched by the gravity of the roller 22 and is in a second stretched state.
  • the roller 22 is folded to the initial state; when the connecting rod 521 is pulled to the right, the first section of the rod body 523 passes through the through hole and drives the traction frame 31 to move to the right, thereby driving the roller bracket 21 to rotate to the right around the second rotating shaft 24 through the third rotating shaft 25, so that the roller 22 moves downward to a certain height and stretches the spring; when the connecting rod 521 is pulled to the right again, the external thread of the second section of the rod body 524 is screwed with the internal thread of the through hole.
  • the present invention provides a roller device that can be raised and lowered.
  • One end of the frame 1 is provided with a through hole, and the through hole is provided with an internal thread.
  • the transmission component 5 includes a connecting rod 521 , one end of which passes through the through hole and is rotatably connected to the traction component 32 , and the other end of the connecting rod 521 remains located outside the frame 1 .
  • connection rod 521 and the traction component 32 are relatively fixed in axial position.
  • a locking portion 522 is provided on the rod body of the connecting rod 521 , and the locking portion 522 is locked and connected to the frame 1 in the axial direction.
  • the locking portion 522 is an external thread provided on the peripheral wall of the rod body of the connecting rod 521, and the external thread is provided on the connecting rod 521 at a position close to the frame 1 or the entire connecting rod 521 is provided with an external thread, and the external thread on the connecting rod 521 is threadedly connected with the internal thread of the hole on the frame 1.
  • the connecting rod 521 when the connecting rod 521 is rotated clockwise, the connecting rod 521 moves rightward relative to the frame 1, and drives the traction frame 31 to move rightward, thereby driving the roller bracket 21 to rotate rightward around the second rotating shaft 24 through the third rotating shaft 25, as shown in FIG5, the roller 22 is lowered to achieve the effect of lifting the device, and then the device is moved through the roller 22;
  • the connecting rod 521 When the connecting rod 521 is rotated counterclockwise, the connecting rod 521 moves leftward relative to the frame 1 and drives the traction frame 31 to move leftward, thereby driving the roller bracket 21 to rotate leftward around the second rotating shaft 24 through the third rotating shaft 25, so that the roller 22 moves upward, as shown in Figure 4, and the roller 22 is retracted.
  • connection between the connecting rod 521 and the traction component 32 has a margin that can satisfy the up and down floating of the traction component.
  • the setting of the elastic component 41 can be omitted.
  • the present invention provides a roller device that can be raised and lowered.
  • One end of the frame 1 is provided with a through hole, and the through hole is a through hole with a notch, wherein the distance between the edge of the notch and the center of the through hole is greater than the diameter of the through hole.
  • the transmission component 5 includes a connecting rod 521, one end of which passes through the through hole and the traction rod.
  • the guide member 32 is rotatably connected, and the other end remains located outside the frame 1.
  • connection rod 521 and the traction component 32 are relatively fixed in axial position.
  • At least one locking portion 522 is axially arranged on the rod body of the connecting rod 521 passing through the perforation.
  • the shape of the locking portion 522 matches the shape of the notch of the perforation so that the locking portion 522 can pass through the notch.
  • the connecting rod 521 passes through the hole and is provided with a plurality of locking parts 522 at intervals along the axial direction.
  • the lifting height of the roller 22 is adjusted by the engagement between the locking parts 522 at different positions and the hole.
  • the traction frame 31 is driven to move to the right, thereby driving the roller bracket 21 to rotate to the right around the second rotating shaft 24 through the third rotating shaft 25, so that the roller 22 moves downward, and the connecting rod 521 is rotated at the same time.
  • the connecting rod 521 is rotated again to stagger the position of the locking portion 522 and the notch, and the locking portion 522 is clamped on the frame 1 near the perforation, so that the roller 22 is stabilized at the descending height;
  • the connecting rod 521 is rotated to make the locking portion 522 exactly correspond to the position of the notch, and the connecting rod 521 is released.
  • the connecting rod 521 is reset under the tension of the spring, so that the roller 22 is retracted.
  • the present invention provides a roller device that can be raised and lowered.
  • the roller bracket 21 further includes a connecting unit, and the connecting unit connects the upper ends of the two supporting plates 211 , so that the roller bracket 21 is sleeved on the traction frame 31 .
  • the connecting unit When the roller bracket 21 rotates around the second rotating shaft 24, the connecting unit is displaced in the vertical direction. In order to ensure that the roller bracket 21 can rotate, as shown in FIG. 1 , the upper end of the frame 1 protrudes upward corresponding to the position of the roller bracket 21. When the roller bracket 21 rotates, space is reserved for the connecting unit to move upward.
  • the upper end surface of the frame 1 can also be set as a horizontal plane, and the distance between its upper end surface and the second rotating shaft 24 in the vertical direction is greater than the displacement of the connecting unit in the vertical direction.
  • the above two solutions can both increase the height of the roller 22 within a limited space, thereby greatly saving the space occupied by the roller device for lifting.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

一种可升降的滚轮装置，包括框架（1）、升降组件、牵引组件和传动部件（5），升降组件可转动地安装在框架（1）上，用于实现滚轮（22）的升降；牵引组件可往复移动地设于框架（1）内，与升降组件相连，用于带动升降组件转动；传动部件（5）可旋转地安装在框架（1）的一端，传动部件（5）的一端穿过框架（1）与牵引组件活动连接，用于带动牵引组件往复移动。

Description

一种可升降的滚轮装置 技术领域
本发明涉及升降装置的技术领域，具体地说，涉及一种可升降的滚轮装置。
背景技术
目前，随着人们生活水平的提高，各式各样的家具和电器日渐进入人们生活中，现有的家用电器和家具大部分由于其底部没有可移动的承载装置，所以它们的搬动或移动很费力，要靠很多人来抬起才能搬动，费时费力，给人们带来了诸多不便，此时也必须借助工具来完成，如何出较少的力轻松搬运较重的设备，不止是移动设备而且要将设备运至一定的高度，因此迫切需要一种新型装置来满足这一系列需求。
为了设备能够具有越来越多的功能和高利用率，滚轮就成了不可缺少的部件。通常，滚轮是指为了方便挪动笨重的设备而设置于设备下端的小轮。但是，现有的设备大部分在底部增加固定滚轮，只能实现移动，但是无法实现升降，而电动升降滚轮成本较高，且对空间要求较大，限制了使用范围。
专利文献KR101595841B1中的滚轮装置包括：齿轮，在边缘具有多个齿轮槽；以及扭力传递装置，配置于齿轮的周围，通过选择齿轮的扭力传递方向来传递扭力，扭力传递装置包括：调节杆，能够在第一位置与第二位置之间进行转动；以及位置调节部件，用于使调节杆位于第一位置及第二位置中的一个，调节杆可在第一位置及第二位置中位于相同齿轮槽，当调节杆位于第一位置及第二位置中的任意一个位置时，扭力传递装置可以向齿轮传递被选择的一个方向的扭力，调节杆具有一个包括旋转中心的阻挡端部，阻挡端部通过旋转来改变对齿轮槽加压的方向，从而决定扭力的传递方向并调节高度。此专利中滚轮的结构比较简单，但是为了保持滚轮的水平，使用人员需握住把手反复进行左 右往复操作，存在容易令使用人员体力消耗过大而放弃操作的问题。
有鉴于此特提出本发明。
发明内容
本发明要解决的技术问题在于克服现有技术的不足，提供一种可升降的滚轮装置，通过传动部件带动牵引组件在框架内往复移动，进而带动升降组件转动，从而实现滚轮的升降，在一定程度上节省了滚轮装置为了满足升降所占用的空间，结构简单，操作方便。
为解决上述技术问题，本发明采用技术方案的基本构思是：一种可升降的滚轮装置，包括：
框架；
升降组件，可转动地安装在所述框架上，用于实现滚轮的升降；
牵引组件，可往复移动地设于所述框架内，与所述升降组件相连，用于带动升降组件转动；
传动部件，可旋转地安装在框架的一端，所述传动部件的一端穿过框架与牵引组件活动连接，用于带动牵引组件往复移动。
进一步的，所述牵引组件包括：
牵引架，所述牵引架与升降组件可转动连接；
牵引部件，设于所述牵引架的一端，与传动部件活动连接。
进一步的，所述传动部件的另一端位于框架的外侧，在延伸的长度方向上与框架的位置相对固定。
进一步的，所述传动部件包括螺杆，所述牵引部件设有螺孔，所述螺杆与螺孔螺接使得所述牵引部件与传动部件构成丝杠传动机构。
以上方案中，传动部件在延伸的长度方向上与框架的位置相对固定，当旋 转螺杆时，由于螺杆与螺孔螺接使得所述牵引部件与传动部件构成丝杠传动机构，所以牵引部件在螺杆上沿螺纹移动，即带动牵引架移动，进而带动升降组件转动，最终实现滚轮的升降，且滚轮在允许的升降高度范围内任意高度可调。
进一步的，所述框架的一端设有穿孔；
所述传动部件包括连接杆，所述连接杆的一端穿过所述穿孔与牵引部件可旋转的连接，另一端保持位于框架的外侧；
所述连接杆与牵引部件在轴向上的位置相对固定。
进一步的，所述连接杆的杆体上设有锁止部，所述锁止部与框架在轴向上锁止连接；
优选的，所述锁止部为设于连接杆的杆体周壁上的外螺纹，所述穿孔设有与外螺纹配合螺纹连接的内螺纹。
以上方案中，由于穿孔设置在框架上，穿孔的内螺纹与连接杆上的外螺纹螺纹连接，当旋转连接杆时，连接杆相对于框架在轴向上移动，由于连接杆与牵引部件在轴向上的位置相对固定，所以连接杆在移动时带动牵引部件和牵引架移动，进而带动升降组件转动，最终实现滚轮的升降，且滚轮在允许的升降高度范围内任意高度可调。
进一步的，所述连接杆的杆体分为两段，分别为第一段杆体和第二段杆体；
所述第一段杆体靠近框架设置，第一段杆体的直径小于穿孔的直径；
所述第二段杆体靠近牵引部件设置，第二段杆体上设有外螺纹，与穿孔的内螺纹配合螺纹连接。
进一步的，还包括弹性部件，用于牵引组件的复位；
所述弹性部件的一端与框架的另一端连接，所述弹性部件的另一端与牵引架远离牵引部件的一端连接。
优选的，所述弹性部件为弹簧。
以上方案中，第一段杆体受力穿过穿孔时带动牵引组件移动，进而带动升降组件转动，使滚轮升降，可以快速调整滚轮的高度；当第二段杆体靠近框架，第二段杆体上的外螺纹与穿孔的内螺纹螺接，通过旋转连接杆，连接杆相对于框架在轴向上移动，进一步带动牵引组件移动，进而带动升降组件进一步转动，使滚轮进一步升降，且在第二段杆体与框架上的穿孔螺接过程中，滚轮在一定高度范围内任意高度可调。
同时，弹性部件具有两种拉伸状态：
当第一段杆体受力穿过穿孔或者第二段杆体与框架上的穿孔螺接时，滚轮降下，弹性部件受拉力拉伸处于第一拉伸状态；
当第一段杆体失去受力或者第二段杆体与框架上的穿孔脱离时，弹性部件将牵引组件拉回原位，滚轮收起，此时，弹性部件受滚轮重力的拉伸，处于第二拉伸状态。
进一步的，所述升降组件至少设置两组，每组升降组件包括：
滚轮支架；
第一转轴，连接所述滚轮支架与滚轮；
第二转轴，连接所述滚轮支架与框架；
第三转轴，连接所述滚轮支架与牵引架；
所述滚轮支架以第二转轴为中心转动，所述第一转轴与第二转轴之间的间距大于第二转轴与第三转轴之间的间距。
以上方案中，滚轮支架以第二转轴为中心转动，且第一转轴与第二转轴之间的间距大于第二转轴与第三转轴之间的间距，即当滚轮支架受力转动时，在竖直方向上，牵引组件移动的距离远远小于滚轮移动的距离，使其能够在有限 的空间内提高滚轮升降的高度，大大节省了滚轮装置为了满足升降所占用的空间。
进一步的，所述牵引架具有两个平行设置的侧边；
所述滚轮支架包括两个支撑片，分别位于牵引架的两侧，与牵引架的两个侧边通过第三转轴实现可转动连接；
所述支撑片通过第一转轴实现与滚轮的可转动连接，通过第二转轴实现与框架的可转动连接。
优选的，所述支撑片为三角形结构。
采用上述技术方案后，本发明与现有技术相比具有以下有益效果：
本发明提供了一种可升降的滚轮装置，通过传动部件带动牵引组件在框架内往复移动，进而带动升降组件转动，从而实现滚轮的升降，在一定程度上节省了滚轮装置为了满足升降所占用的空间。
滚轮支架以第二转轴为中心转动，且第一转轴与第二转轴之间的间距大于第二转轴与第三转轴之间的间距，即当滚轮支架受力转动时，在竖直方向上，牵引组件移动的距离远远小于滚轮移动的距离，使其能够在有限的空间内提高滚轮升降的高度，大大节省了滚轮装置为了满足升降所占用的空间。
本发明提供的一种可升降的滚轮装置，满足移动和升降的多种功能，具有占用空间小、结构简单、方便操作的特点。
下面结合附图对本发明的具体实施方式作进一步详细的描述。
附图说明
附图作为本申请的一部分，用来提供对本发明的进一步的理解，本发明的示意性实施例及其说明用于解释本发明，但不构成对本发明的不当限定。显然，下面描述中的附图仅仅是一些实施例，对于本领域普通技术人员来说，在不付 出创造性劳动的前提下，还可以根据这些附图获得其他附图。在附图中：
图1是本发明的滚轮装置的整体结构示意图；
图2是本发明的一种实施方案中滚轮收起时的部分结构示意图；
图3是本发明的一种实施方案中滚轮降下时的部分结构示意图；
图4是本发明的另一种实施方案中滚轮收起时的部分结构示意图；
图5是本发明的另一种实施方案中滚轮降下时的部分结构示意图；
图6是本发明的再一种实施方案中滚轮收起时的部分结构示意图；
图7是本发明的再一种实施方案中滚轮降下时的部分结构示意图。
图中：1、框架；21、滚轮支架；211、支撑片；22、滚轮；23、第一转轴；24、第二转轴；25、第三转轴；31、牵引架；32、牵引部件；41、弹性部件；5、传动部件；511、螺杆；512、止挡部；521、连接杆；522、锁止部；523、第一段杆体；524、第二段杆体。
需要说明的是，这些附图和文字描述并不旨在以任何方式限制本发明的构思范围，而是通过参考特定实施例为本领域技术人员说明本发明的概念。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对实施例中的技术方案进行清楚、完整地描述，以下实施例用于说明本发明，但不用来限制本发明的范围。
在本发明的描述中，需要说明的是，术语“上”、“下”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安 装”、“相连”等应做广义理解，例如，可以是可拆卸连接，也可以是机械连接，或者也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
如图1至图7所示，本发明提供一种可升降的滚轮装置，包括框架1，所述框架1上设有升降组件，所述升降组件包括滚轮支架21、第一转轴23、第二转轴24、第三转轴25和滚轮22，所述滚轮支架21包括支撑片211；所述框架1内设有牵引组件，所述牵引组件包括牵引架31和牵引部件32；所述框架1内设有弹性部件41，框架1上还设有传动部件5。
作为一种实施方案，本发明提供一种可升降的滚轮装置。
如图1所示，所述滚轮装置包括框架1，所述框架1呈罩状，框架1的下端至少部分呈开放状态，用于留出滚轮22所用空间。
所述框架1起到支撑和连接的作用。
如图2至图7所示，所述滚轮装置还包括升降组件和牵引组件。
所述升降组件可转动地安装在所述框架1上，用于实现滚轮22的升降。
所述升降组件至少设置两组，每组升降组件包括滚轮支架21，所述滚轮支架21分别与滚轮22、框架1和牵引组件可转动连接。
所述升降组件还包括第一转轴23、第二转轴24和第三转轴25。
所述第一转轴23用于连接所述滚轮支架21与滚轮22。
所述第二转轴24用于连接所述滚轮支架21与框架1。
所述第三转轴25用于连接所述滚轮支架21与牵引组件。
所述滚轮支架21以第二转轴24为中心转动。
所述第一转轴23与第二转轴24之间的间距大于第二转轴24与第三转轴25 之间的间距。
所述滚轮支架21为凸轮结构，优选为三角形的凸轮结构。
在本实施例中，滚轮支架21以第二转轴24为中心转动，且第一转轴23与第二转轴24之间的间距大于第二转轴24与第三转轴25之间的间距，即当滚轮支架21受力转动时，在竖直方向上，牵引组件移动的距离远远小于滚轮22移动的距离，使其能够在有限的空间内提高滚轮22升降的高度，大大节省了滚轮装置为了满足升降所占用的空间。
所述牵引组件可往复移动地设于所述框架1内，与升降组件相连，用于带动升降组件转动。
所述牵引组件包括牵引架31和牵引部件32。
所述牵引架31具有两个平行设置的侧边，所述滚轮支架21包括两个支撑片211，分别位于牵引架31的两侧，与牵引架31的两个侧边通过第三转轴25实现可转动连接。
所述支撑片211通过第一转轴23实现与滚轮22的可转动连接，通过第二转轴24实现与框架1的可转动连接。
优选所述支撑片211为三角形结构。
所述牵引部件32固定连接在牵引架31的右端，优选两者一体设置。
还包括传动部件5，所述传动部件5可旋转地安装在框架1的一端，所述传动部件5的一端穿过框架1与牵引部件32活动连接，用于带动牵引组件往复移动。
如图2和图3所示，所述传动部件5的另一端位于框架1的外侧，在延伸的长度方向上与框架1的位置相对固定。
所述传动部件5包括螺杆511，所述牵引部件32设有螺孔，所述螺杆511 与螺孔螺接使得所述牵引部件32与传动部件5构成丝杠传动机构。
传动部件5在延伸的长度方向上与框架1的位置相对固定的方式可以是：
所述框架1的一端设有穿孔，所述传动部件5的一端穿过所述穿孔，另一端设有两个间隔设置的止挡部512，所述止挡部512分别位于框架1的内侧(图中未示出)和外侧，所述止挡部512的外周径大于穿孔的直径。
优选在止挡部512与框架1之间设有垫片。
在本实施例中，通过螺杆511与螺孔螺接使得所述牵引部件32与传动部件5构成丝杠传动机构，为牵引架31的移动提供作用力；由于牵引架31往复移动时，带动滚轮支架21以第二转轴24为中心转动，此时会使得牵引架31产生上下浮动，并带动螺杆511上下浮动，在传动部件5的止挡部512与框架1之间设有垫片，是为了使螺杆511在不影响与螺孔螺接的情况下，能够产生较小角度的倾斜以满足螺杆511的上下浮动；同时，减小传动部件5与框架1之间的摩擦，提高使用寿命。
需要说明的是，传动部件5在延伸的长度方向上与框架1的位置相对固定的方式不限于以上方案。
在本实施方案中，传动部件5在延伸的长度方向上与框架1的位置相对固定，当旋转螺杆511时，由于螺杆511与螺孔螺接使得所述牵引部件32与传动部件5构成丝杠传动机构，所以牵引部件32在螺杆511上沿螺纹移动，即带动牵引架31移动，进而带动升降组件转动，最终实现滚轮22的升降，且滚轮22在允许的升降高度范围内任意高度可调。
具体的：
如图2所示，滚轮22收起为初始状态；当顺时针旋转螺杆511时，牵引部件32在螺杆511上沿螺纹向右移动，并带动牵引架31向右移动，从而通过第 三转轴25带动滚轮支架21以第二转轴24为中心向右旋转，使滚轮22向下移动，如图3所示，滚轮22降下，达到升起设备的作用，然后通过滚轮22来移动设备；
当逆时针旋转螺杆511时，牵引部件32在螺杆511上沿螺纹向左移动，并带动牵引架31向左移动，带动滚轮支架21以第二转轴24为中心向左旋转，使滚轮22向上移动，滚轮22收起，回到图2所示状态。
作为一种实施方案，本发明提供一种可升降的滚轮装置。
所述框架1的一端设有穿孔，所述穿孔设有内螺纹。
所述传动部件5包括连接杆521，所述连接杆521的一端穿过所述穿孔与牵引部件32可旋转的连接，另一端保持位于框架1的外侧。
所述连接杆521与牵引部件32在轴向上的位置相对固定。
连接杆521与牵引部件32在轴向上的位置相对固定的方式可以是：
牵引部件32也设有穿孔，所述连接杆521的一端穿过牵引部件32的穿孔，在连接杆521的一端上间隔设置两个阻挡部，两个阻挡部分别位于牵引部件32的穿孔的两侧；
或者，牵引部件32设有球形凹槽，连接杆521的一端设有球形连接部，球形连接部的直径小于球形凹槽的直径，且大于球形凹槽开口的直径，使得球形连接部能够在球形凹槽内旋转，但不能脱出。
需要说明的是，连接杆521与牵引部件32在轴向上的位置相对固定的方式不限于上述方案，且所述连接杆521与牵引部件32的连接处留有能够满足牵引组件上下浮动的余量。
所述连接杆521的杆体上设有锁止部522，所述锁止部522与框架1在轴向上锁止连接。
在本实施方案中，所述锁止部522为设于连接杆521的杆体周壁上的外螺纹，所述穿孔设有与外螺纹配合螺纹连接的内螺纹。
由于穿孔设置在框架1上，穿孔的内螺纹与连接杆521上的外螺纹螺纹连接，当旋转连接杆521时，连接杆521相对于框架1在轴向上移动，由于连接杆521与牵引部件32在轴向上的位置相对固定，所以连接杆521在移动时带动牵引部件32和牵引架31移动，进而带动升降组件转动，最终实现滚轮22的升降，且滚轮22在允许的升降高度范围内任意高度可调。
优选的，如图6和图7所示，所述连接杆521的杆体分为两段，分别为第一段杆体523和第二段杆体524。
所述第一段杆体523靠近框架1设置，第一段杆体523的直径小于穿孔的直径。
所述第二段杆体524靠近牵引部件32设置，第二段杆体524上设有外螺纹，与穿孔的内螺纹配合螺纹连接。
还包括弹性部件41，用于牵引组件的复位。
所述弹性部件41的一端与框架1的另一端连接，所述弹性部件41的另一端与牵引架31远离牵引部件32的一端连接。
优选的，所述弹性部件41为弹簧。
在本实施方案中，第一段杆体523受力穿过穿孔时带动牵引组件移动，进而带动升降组件转动，使滚轮22升降，可以快速调整滚轮22的高度；当第二段杆体524靠近框架1，第二段杆体524上的外螺纹与穿孔的内螺纹螺接，通过旋转连接杆521，连接杆521相对于框架1在轴向上移动，进一步带动牵引组件移动，进而带动升降组件进一步转动，使滚轮22进一步升降，且在第二段杆体524与框架1上的穿孔螺接过程中，滚轮22在一定高度范围内任意高度可调。
同时，弹性部件41具有两种拉伸状态：
当第一段杆体523受力穿过穿孔或者第二段杆体524与框架1上的穿孔螺接时，滚轮22降下，弹性部件41受拉力拉伸处于第一拉伸状态；
当第一段杆体523失去受力或者第二段杆体524与框架1上的穿孔脱离时，弹性部件41将牵引组件拉回原位，滚轮22收起，此时，弹性部件41受滚轮22重力的拉伸，处于第二拉伸状态。
具体的：
如图6所示，滚轮22收起为初始状态；当向右拉动连接杆521时，第一段杆体523穿过穿孔，并带动牵引架31向右移动，从而通过第三转轴25带动滚轮支架21以第二转轴24为中心向右旋转，使滚轮22向下移动一定高度，并拉伸弹簧；当再向右拉动连接杆521时，第二段杆体524的外螺纹与穿孔的内螺纹螺接，此时顺时针旋转连接杆521时，第二段杆体524向右移动慢慢穿过穿孔，并带动牵引架31向右移动，从而通过第三转轴25带动滚轮支架21以第二转轴24为中心向右旋转，使滚轮22向下继续移动，此时弹簧呈第一拉伸状态，如图7所示，滚轮22降下，达到升起设备的作用，然后通过滚轮22来移动设备；
当逆时针旋转连接杆521时，第二段杆体524向左移动慢慢穿过穿孔，当第二段杆体524向左移动完全穿过穿孔时，松开连接杆521，弹簧恢复至第二拉伸状态，产生向左的拉力，连接杆521在弹簧的拉力下向左继续移动，使第一段杆体523向左穿过穿孔，同时，牵引架31向左移动，带动滚轮支架21以第二转轴24为中心向左旋转，使滚轮22向上移动，滚轮22收起，回到图6所示状态。
作为一种实施方案，本发明提供一种可升降的滚轮装置。
所述框架1的一端设有穿孔，所述穿孔设有内螺纹。
所述传动部件5包括连接杆521，所述连接杆521的一端穿过所述穿孔与牵引部件32可旋转的连接，另一端保持位于框架1的外侧。
所述连接杆521与牵引部件32在轴向上的位置相对固定。
所述连接杆521的杆体上设有锁止部522，所述锁止部522与框架1在轴向上锁止连接。
在本实施例中，如图4和图5所示，所述锁止部522为设于连接杆521的杆体周壁上的外螺纹，所述外螺纹设于连接杆521上靠近框架1的位置或者整个连接杆521的杆体上均设有外螺纹，连接杆521上的外螺纹与框架1上穿孔的内螺纹配合螺纹连接。
在本实施方案中，当顺时针旋转连接杆521时，连接杆521相对于框架1向右移动，并带动牵引架31向右移动，从而通过第三转轴25带动滚轮支架21以第二转轴24为中心向右旋转，如图5所示，滚轮22降下，达到升起设备的作用，然后通过滚轮22来移动设备；
当逆时针旋转连接杆521时，连接杆521相对于框架1向左移动，并带动牵引架31向左移动，从而通过第三转轴25带动滚轮支架21以第二转轴24为中心向左旋转，使滚轮22向上移动，如图4所示，滚轮22收起。
需要说明的是，所述连接杆521与牵引部件32的连接处留有能够满足牵引组件上下浮动的余量。此时，可以省略弹性部件41的设置。
作为一种实施方案，本发明提供一种可升降的滚轮装置。
所述框架1的一端设有穿孔，所述穿孔为带有缺口的通孔，其中缺口边缘与穿孔中心之间的距离大于穿孔的直径。
所述传动部件5包括连接杆521，所述连接杆521的一端穿过所述穿孔与牵 引部件32可旋转的连接，另一端保持位于框架1的外侧。
所述连接杆521与牵引部件32在轴向上的位置相对固定。
所述连接杆521穿过穿孔的杆体上沿轴向设有至少一个锁止部522，所述锁止部522的形状与穿孔的缺口的形状适配，使锁止部522能够穿过所述缺口。
所述连接杆521穿过穿孔的杆体上沿轴向间隔设有多个锁止部522，利用不同位置的锁止部522与穿孔的卡接，调整滚轮22的升降高度。
在本实施方案中，通过向右拉动连接杆521，带动牵引架31向右移动，从而通过第三转轴25带动滚轮支架21以第二转轴24为中心向右旋转，使滚轮22向下移动，同时旋转连接杆521，当锁止部522与缺口的位置正好对应时，锁止部522穿过缺口，此时再次旋转连接杆521，使锁止部522与缺口的位置错开，锁止部522卡接在穿孔附近的框架1上，使滚轮22稳定在下降高度处；
当需要调整滚轮22的高度时，只需继续向右拉动并旋转连接杆521，当下一个锁止部522穿过缺口时，再次旋转连接杆521，使锁止部522与缺口的位置错开，锁止部522卡接在穿孔附近的框架1上，以此类推，利用不同位置的锁止部522与穿孔的卡接，调整滚轮22的升降高度。
同理，当需要收起滚轮22时，旋转连接杆521，使锁止部522与缺口的位置正好对应，松开连接杆521，连接杆521在弹簧的拉伸作用下复位，使滚轮22收起。
需要说明的是，所述连接杆521与牵引部件32的连接处留有能够满足牵引组件上下浮动的余量。
作为一种实施方案，本发明提供一种可升降的滚轮装置。
如图2至图7所示，所示滚轮支架21还包括连接单元，所述连接单元连接所述两个支撑片211的上端，使得滚轮支架21套设在牵引架31上。
当滚轮支架21以第二转轴24为中心转动时，连接单元在竖直方向上产生位移，为了满足滚轮支架21可以转动，如图1所示，所述框架1的上端对应滚轮支架21的位置向上凸起，当滚轮支架21转动时，为连接单元向上移动留出空间。
或者，因为第一转轴23与第二转轴24之间的间距大于第二转轴24与第三转轴25之间的间距，即当滚轮支架21受力以第二转轴24为中心转动时，支撑片211的上端向上移动的位移较小，也可以将框架1的上端面设置成水平面，其上端面与第二转轴24在竖直方向上的距离大于连接单元在竖直方向上产生位移。
以上两种方案，都能够使滚轮装置在有限的空间内提高滚轮22升降的高度，大大节省了滚轮装置为了满足升降所占用的空间。
以上所述仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专利的技术人员在不脱离本发明技术方案范围内，当可利用上述提示的技术内容做出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明方案的范围内。

Claims (10)

  1. 一种可升降的滚轮装置，其特征在于，包括：
    框架(1)；
    升降组件，可转动地安装在所述框架(1)上，用于实现滚轮(22)的升降；
    牵引组件，可往复移动地设于所述框架(1)内，与所述升降组件相连，用于带动升降组件转动；
    传动部件(5)，可旋转地安装在框架(1)的一端，所述传动部件(5)的一端穿过框架(1)与牵引组件活动连接，用于带动牵引组件往复移动。
  2. 根据权利要求1所述的一种可升降的滚轮装置，其特征在于，所述牵引组件包括：
    牵引架(31)，所述牵引架(31)与升降组件可转动连接；
    牵引部件(32)，设于所述牵引架(31)的一端，与传动部件(5)活动连接。
  3. 根据权利要求2所述的一种可升降的滚轮装置，其特征在于，所述传动部件(5)的另一端位于框架(1)的外侧，在延伸的长度方向上与框架(1)的位置相对固定。
  4. 根据权利要求3所述的一种可升降的滚轮装置，其特征在于，所述传动部件(5)包括螺杆(511)，所述牵引部件(32)设有螺孔，所述螺杆(511)与螺孔螺接使得所述牵引部件(32)与传动部件(5)构成丝杠传动机构。
  5. 根据权利要求2所述的一种可升降的滚轮装置，其特征在于，所述框架(1)的一端设有穿孔；
    所述传动部件(5)包括连接杆(521)，所述连接杆(521)的一端穿过所述穿孔与牵引部件(32)可旋转的连接，另一端保持位于框架(1)的外侧；
    所述连接杆(521)与牵引部件(32)在轴向上的位置相对固定。
  6. 根据权利要求5所述的一种可升降的滚轮装置，其特征在于，所述连接杆(521)的杆体上设有锁止部(522)，所述锁止部(522)与框架(1)在轴向上锁止连接；
    优选的，所述锁止部(522)为设于连接杆(521)的杆体周壁上的外螺纹，所述穿孔设有与外螺纹配合螺纹连接的内螺纹。
  7. 根据权利要求6所述的一种可升降的滚轮装置，其特征在于，所述连接杆(521)的杆体分为两段，分别为第一段杆体(523)和第二段杆体(524)；
    所述第一段杆体(523)靠近框架(1)设置，第一段杆体(523)的直径小于穿孔的直径；
    所述第二段杆体(524)靠近牵引部件(32)设置，第二段杆体(524)上设有外螺纹，与穿孔的内螺纹配合螺纹连接。
  8. 根据权利要求7所述的一种可升降的滚轮装置，其特征在于，还包括弹性部件(41)，用于牵引组件的复位；
    所述弹性部件(41)的一端与框架(1)的另一端连接，所述弹性部件(41)的另一端与牵引架(31)远离牵引部件(32)的一端连接。
  9. 根据权利要求2-8任一所述的一种可升降的滚轮装置，其特征在于，所述升降组件至少设置两组，每组升降组件包括：
    滚轮支架(21)；
    第一转轴(23)，连接所述滚轮支架(21)与滚轮(22)；
    第二转轴(24)，连接所述滚轮支架(21)与框架(1)；
    第三转轴(25)，连接所述滚轮支架(21)与牵引架(31)；
    所述滚轮支架(21)以第二转轴(24)为中心转动，所述第一转轴(23)与第二转轴(24)之间的间距大于第二转轴(24)与第三转轴(25)之间的间 距。
  10. 根据权利要求9所述的一种可升降的滚轮装置，其特征在于，所述牵引架(31)具有两个平行设置的侧边；
    所述滚轮支架(21)包括两个支撑片(211)，分别位于牵引架(31)的两侧，与牵引架(31)的两个侧边通过第三转轴(25)实现可转动连接；
    所述支撑片(211)通过第一转轴(23)实现与滚轮(22)的可转动连接，通过第二转轴(24)实现与框架(1)的可转动连接。
PCT/CN2023/116922 2022-10-28 2023-09-05 一种可升降的滚轮装置 WO2024087889A1 (zh)

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