CN110081149B

CN110081149B - Mechanical pulley device

Info

Publication number: CN110081149B
Application number: CN201810073904.5A
Authority: CN
Inventors: 何柏霖
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-01-25
Filing date: 2018-01-25
Publication date: 2021-07-30
Anticipated expiration: 2038-01-25
Also published as: CN110081149A

Abstract

The invention provides a mechanical pulley device, which comprises a track and a sliding group, wherein the sliding group comprises a first base and a wheel shaft, a pulley and a resilient device, first base is provided with a backstop portion, the shaft is provided with a first section and a second section along the axial, first section can use a first virtual pivot to locate first base rotation ground pivot relative to the center first base, the pulley can use a second virtual pivot to locate the second section of shaft relative to the shaft rotation ground pivot of center, first virtual pivot is not coaxial with the virtual pivot of second and is parallel to each other, the outer peripheral edges of pulley can roll relatively the track and support and lean on in the track, the one end of resilient device is connected in the shaft and the different other end and supports and support and lean on in backstop portion, the pulley gear relies on above-mentioned structure, can avoid the group of sliding to block and also can avoid producing the clearance between pulley and the track.

Description

Mechanical pulley device

Technical Field

The present invention relates to a pulley device, and more particularly, to a pulley device for a machine.

Background

Please refer to the taiwan patent No. M418992, which discloses a linear slide rail, wherein a recessed engaging groove is formed on both sides of a rail for engaging and positioning a thin reinforcing plate, and the reinforcing plate is provided with a supporting portion protruding outward, so that a slide seat covers the rail, a pulley is pivoted on the reinforcing plate inside the slide seat corresponding to the recessed engaging groove of the rail, and a supporting groove is formed on the pulley corresponding to the supporting portion of the reinforcing plate.

Generally, the pulley device is designed in a dual-track type, and the two tracks are perfectly parallel in an ideal state, but in a practical aspect, the distance between the two tracks is not fixed due to errors generated in production or deformation of the tracks caused by use, and the distance between the two tracks may slightly vary at different positions.

However, the linear sliding rail with the above structure has no mechanism to overcome the above problems, if the distance between the pulleys on the two sides of the linear sliding rail is matched with the narrow position of the rail, the sliding seat may be blocked or operate unsmoothly at the wide position of the rail, and if the distance between the pulleys on the two sides of the linear sliding rail is matched with the wide position of the rail, a gap may be generated between the roller and the rail at the narrow position of the rail.

Disclosure of Invention

The invention aims to: the mechanical pulley device is provided, and the technical problems in the prior art are solved.

In order to achieve the purpose, the invention adopts the technical scheme that:

a mechanical pulley device is characterized by comprising:

a track;

a group slides, this group that slides is including a first base, an axle, a pulley and a resilient means, this first base is provided with a backstop portion, this axle is provided with a first section and a second section along the axial, this first section can use a first virtual pivot as the center and pivot this first base relatively and rotationally, this pulley can use a second virtual pivot as the center and pivot this axle relatively and rotationally and locate the second section of this axle, this first virtual pivot is not coaxial with this second virtual pivot and parallel to each other, this pulley can roll relatively this track along the radial outer peripheral edge of this second virtual pivot and lean on in this track, the one end of this resilient means is connected in this axle and the other end of difference supports and leans on in this backstop portion.

The mechanical pulley device, wherein: the first section and the second section are cylindrical, the first section takes the first virtual rotating shaft as a central shaft, and the second section takes the second virtual rotating shaft as a central shaft.

The mechanical pulley device, wherein: this backstop sets up in one side that this first base is different from this pulley, and the first section of this shaft is different from one pivot goods of furniture for display rather than for use of one end fixedly connected with of this pulley, and this pivot pendulum spare can be along with this shaft synchronous rotation, and this resilior is including a sliding part and an elastic component, and this sliding part can be connected in this pivot goods of furniture for display rather than for use of pivot pendulum spare with sliding relatively, and this sliding part is located to this elastic component cover, and the one end of this elastic component is supported and is leaned on in this pivot pendulum spare and the other end of dissimilarity and pushes away this sliding part.

The mechanical pulley device, wherein: the sliding group comprises a second base, the wheel shaft is provided with a third section along the axial direction, the third section is positioned on one side of the second section, which is different from the first section, and the third section of the wheel shaft can be pivoted on the second base in a manner of rotating relative to the second base by taking the first virtual rotating shaft as the center.

The mechanical pulley device, wherein: the third section is cylindrical, and the third section takes the first virtual rotating shaft as a central shaft.

Compared with the prior art, the invention has the beneficial effects that: the pulley device adopts the structure, so that the total width of the pulley device can be changed along with the width of the track, the sliding group can be prevented from being clamped, and the gap between the pulley and the track can also be prevented.

Drawings

Fig. 1 is a plan view of a sheave apparatus of a machine of the present invention.

Fig. 2 is a partially enlarged plan view of the pulley device of the machine of the present invention.

Fig. 3 is a cross-sectional view of the sheave assembly of the machine of the present invention.

Fig. 4 is a partially enlarged plan view of the pulley of the mechanical pulley device of the present invention retracted inside.

FIG. 5 is a cross-sectional view of the sliding unit of the pulley device of the machine of the present invention when the pulley is retracted.

Description of reference numerals: 10 a pulley device; 20 tracks; 30, a slippage group; 31 a first base; 311 a stopping portion; 32 axles; 321 a first section; 322 a second segment; 323 pivoting the swing part; 324 a third section; 33 pulleys; 34 a rebounder; 341 a sliding member; 342 an elastic member; 35 a second base; c1 first virtual shaft; c2 second virtual hinge.

Detailed Description

Referring to fig. 1 to 3, there are shown a plan view, a partially enlarged plan view, and a sectional structure view of a pulley device of a machine according to the present invention. The pulley device 10 of the invention comprises a track 20 and a sliding group 30; wherein:

the sliding set 30 includes a first base 31, an axle 32, a pulley 33 and a resilient device 34, the first base 31 is provided with a stopper 311, the axle 32 is provided with a first section 321 and a second section 322 along an axial direction, the first section 321 can be pivoted to the first base 31 by taking a first virtual rotating shaft C1 as a center, the pulley 33 can be pivoted to the second section 322 of the axle 32 by taking a second virtual rotating shaft C2 as a center, the first virtual rotating shaft C1 and the second virtual rotating shaft C2 are not coaxial and are parallel to each other, the pulley 33 can be abutted to the rail 20 by rolling along the radial outer periphery of the second virtual rotating shaft C2, one end of the resilient device 34 is connected to the axle 32, and the other end is abutted to the stopper 311.

The stopping portion 311 is disposed on a side of the first base 31 different from the pulley 33, one end 321 of the first section of the axle 32 different from the pulley 33 is fixedly connected with a pivot swing portion 323, the pivot swing portion 323 can rotate synchronously with the axle 32, the rebounding device 34 includes a sliding member 341 and an elastic member 342, the sliding member 341 can be slidably connected to the pivot swing portion 323 relative to the pivot swing portion 323, the elastic member 342 is sleeved on the sliding member 341, and one end of the elastic member 342 abuts against the pivot swing portion 323 and the other end of the elastic member pushes the sliding member 341.

The sliding set 30 includes a second base 35, the axle 32 is axially provided with a third section 324, the third section 324 is located at a side of the second section 322 opposite to the first section 321, and the third section 324 of the axle 32 can be pivotally provided on the second base 35 around the first virtual rotation axis C1 to rotate relative to the second base 35.

The first section 321, the second section 322 and the third section 324 are all cylindrical in this embodiment, the first section 321 and the third section 324 take the first virtual rotation axis C1 as a central axis, and the second section 322 takes the second virtual rotation axis C2 as a central axis.

Fig. 4 and 5 are a partial enlarged plan view and a sectional structure view of the pulley of the mechanical pulley device of the present invention during inward retraction of the pulley. When the sliding set 30 moves to a position where the track 20 is narrow, the pulley 33 is pressed to drive the axle 32 to rotate relative to the first base 31, and because the first virtual rotating shaft C1 is not coaxial with the second virtual rotating shaft C2, the axle 32 can shorten the distance from the first virtual rotating shaft C1 to the track 20 after rotating, so that the sliding set 30 can adapt to the width of the track 20. When the sliding set 30 moves to the wider position of the rail 20, the resilient member 34 can push the axle 32 to rotate relative to the first base 31, so that the distance from the first virtual rotation axis C1 to the rail 20 increases.

Due to the adoption of the structure of the pulley device 10, the total width of the pulley device 10 can be changed along with the width of the track, the sliding group can be prevented from being clamped, and a gap between the pulley 33 and the track 20 can also be avoided.

In view of the above, it can be concluded that the present invention has the following advantages:

1. the invention relates to a mechanical pulley device, which comprises a track and a sliding group, wherein the sliding group comprises a first base, a wheel shaft, a pulley and a resilient device, the first base is provided with a stopping part, the wheel shaft is axially provided with a first section and a second section, the first section can be pivoted on the first base in a way of rotating relative to the first base by taking a first virtual rotating shaft as a center, the pulley can be pivoted on the second section of the wheel shaft in a way of rotating relative to the wheel shaft by taking a second virtual rotating shaft as a center, the first virtual rotating shaft and the second virtual rotating shaft are not coaxial and are parallel to each other, the pulley can roll relative to the track along the radial outer periphery of the second virtual rotating shaft and abut against the track, one end of the resilient device is connected with the wheel shaft, and the other end of the resilient device abuts against the stopping part, the pulley device adopts the structure, so that the total width of the pulley device can be changed along with the width of the track, the sliding group can be prevented from being clamped, and the gap between the pulley and the track can also be prevented.

Claims

1. A mechanical pulley device is characterized by comprising:

a track;

a sliding set, the sliding set includes a first base, a wheel axle, a pulley and a resilient device, the first base has a stop portion, the wheel axle has a first section and a second section along the axial direction, the first section can be pivoted on the first base with a first virtual rotating shaft as the center, the pulley can be pivoted on the second section of the wheel axle with a second virtual rotating shaft as the center with respect to the wheel axle, the first virtual rotating shaft and the second virtual rotating shaft are not coaxial and are parallel to each other, the pulley can roll along the radial outer periphery of the second virtual rotating shaft and lean against the track, one end of the resilient device is connected to the wheel axle and the other end lean against the stop portion, the stop portion is arranged on one side of the first base different from the pulley, one end of the first section of the wheel axle different from the pulley is fixedly connected with a pivot swing portion, this pivot pendulum can be along with this shaft synchronous rotation, and this resiliometer is including a sliding part and an elastic component, and this sliding part can be connected in this pivot pendulum spare with sliding relatively this pivot pendulum, and this sliding part is located to this elastic component cover, and the one end of this elastic component supports to lean on in this pivot pendulum and the different other end pushes away this sliding part.

2. The mechanical pulley arrangement of claim 1, wherein: the first section and the second section are cylindrical, the first section takes the first virtual rotating shaft as a central shaft, and the second section takes the second virtual rotating shaft as a central shaft.

3. The mechanical pulley arrangement of claim 2, wherein: the sliding group comprises a second base, the wheel shaft is provided with a third section along the axial direction, the third section is positioned on one side of the second section, which is different from the first section, and the third section of the wheel shaft can be pivoted on the second base in a manner of rotating relative to the second base by taking the first virtual rotating shaft as the center.

4. The mechanical pulley arrangement of claim 3, wherein: the third section is cylindrical, and the third section takes the first virtual rotating shaft as a central shaft.