CN2918892Y

CN2918892Y - Double guide screw lifting gear

Info

Publication number: CN2918892Y
Application number: CN 200620121102
Authority: CN
Inventors: 王嘉蓉
Original assignee: DONGGUAN TMOTION TRANSMISSION TECHNOLOGY Co Ltd
Current assignee: DONGGUAN TMOTION TRANSMISSION TECHNOLOGY Co Ltd
Priority date: 2006-07-11
Filing date: 2006-07-11
Publication date: 2007-07-04
Anticipated expiration: 2016-07-11

Abstract

The utility model discloses a double guide chase screw lifting device, which is connected respectively on a first, a second and a third sliding unit which are mutually plugged, comprising a driving device, a first transmission device and a second transmission device, wherein the driving device is fixed on the bottom of the first sliding unit, the first transmission device comprises a guide chase screw connected with the driving device and a retractable pipe component which can do linear moving against the guide chase screw, the guide chase screw is driven by the driving device, the other end of the retractable component is fixed on the top of the second sliding unit; additionally, the second transmission device is arranged in parallel on one side of the first transmission device, and comprises a sleeve cylinder driven by the first transmission device and a guide chase screw thread-connected with the second transmission device, one end of the second transmission device is fixed on the bottom end of the third sliding unit. Thus, the whole structure is simplified and the manufacturing and heat treatment expense of each component is saved, therefore the cost is effectively reduced.

Description

Two driving screw lowering or hoisting gears

Technical field

The utility model relates to a kind of pair of driving screw lowering or hoisting gear, especially a kind of lowering or hoisting gear that is installed in electronic table or beddo.

Background technique

Electronic table or beddo lowering or hoisting gear be installed in the inside of two section type sliding unit, be connected on electronic table or the beddo again, so that can be done the adjustment of high and low position.Yet because the extension total length of this lowering or hoisting gear is no more than two sliding unit sums, and shrink total length and be not less than the length of arbitrary longer sliding unit, therefore its extension that can reach and retraction stroke have its narrow limitation, can't satisfy the requirement of the higher adjustment spacing of existing market.Therefore the design of multi-section type sliding units such as three sections or four sections is arranged, it not only has the elongation and shorter withdrawal amount longer than two section type sliding unit, and the travelling speed of stretching out or withdrawing of sliding unit is also quicker, so have the lowering or hoisting gear that the multi-section type sliding unit is provided, become the important topic that the stakeholder studied of being engaged in this industry.

Known lowering or hoisting gear mainly comprises driving mechanism, first driving mechanism and second driving mechanism, and wherein first driving mechanism comprises tubular driving screw and the nut that is rotated by drive mechanism.The inside and outside internal and external screw thread that is respectively equipped with of this tubular driving screw, this outside thread is threaded with nut; And this second driving mechanism and the first driving mechanism tandem are provided with, and it has the cylindricality driving screw of the transmission that is threaded with the internal thread of tubular driving screw, so that the tubular driving screw can be done linear moving with respect to nut and cylindricality driving screw simultaneously; And the transmission by driving mechanism, make each sliding unit produce the start of mutual slippage.

Yet, known driving screw lowering or hoisting gear still has following problem points under reality is used, owing to its member tubular driving screw, cylindricality driving screw are to make respectively separately, and do not have the element of realization general usefulness mutually, make the element cost can't obtain effectively to reduce; The inside and outside screw thread that all is provided with of this tubular driving screw in addition, not only quite loaded down with trivial details and difficult aspect processing and fabricating, and the heat treatment manufacturing process after processing is difficult for obtaining surface of good hardness especially, and through between the internal thread of be everlasting cylindricality driving screw and tubular driving screw, cause friction fast to consume, more increase the expenditure of follow-up maintenance expenses, caused the inconvenience in the use.

So, the design people puts and is engaged in research and development experience for many years in view of the above problems, and at inconvenience that can improve and problem points, concentrate on studies and cooperate actual utilization, and, propose a kind of reasonable in design and effectively improve two driving screw lowering or hoisting gears of the problems referred to above point in line with excelsior spirit.

The model utility content

Main purpose of the present utility model is to provide a kind of pair of driving screw lowering or hoisting gear, and this lowering or hoisting gear is connected on first and second and the 3rd sliding unit of mutual socket, thereby can control the mutual slippage between each sliding unit.Described pair of driving screw lowering or hoisting gear comprises driving mechanism, first driving mechanism and second driving mechanism, and wherein driving mechanism is fixed in the bottom of first sliding unit; And first driving mechanism comprises the driving screw that is connected in driving mechanism and be threadedly connected to driving screw and can it make linearly moving telescopic tube assembly relatively, this driving screw is by drive mechanism, and the other end of this telescopic tube assembly then is fixed in the top of second sliding unit; This second driving mechanism is parallel to a side setting of first driving mechanism in addition, and it comprises that one end of this driving screw is fixed in the bottom of the 3rd sliding unit by the sleeve of the first driving mechanism rotary driving and another driving screw that is threaded mutually with sleeve; Transmission by driving mechanism can drive second and three sliding units simultaneously, protrudes out or the start of retraction with respect to first sliding unit.

Of the present utility modelly be to provide a kind of pair of driving screw lowering or hoisting gear on the other hand, this lowering or hoisting gear is connected on first and second and the 3rd sliding unit of mutual socket, thereby can control the mutual slippage between each sliding unit, described lowering or hoisting gear comprises driving mechanism, first driving mechanism and second driving mechanism, and wherein driving mechanism is fixed in the bottom of first sliding unit; And first driving mechanism comprises the driving screw that is connected in driving mechanism and be threadedly connected to driving screw and can it make linearly moving telescopic tube assembly relatively, this driving screw is by drive mechanism, and the other end of this telescopic tube assembly is fixed in the top of second sliding unit; This second driving mechanism is parallel to a side setting of first driving mechanism in addition, and it comprises that one end of this driving screw is fixed in the bottom of the 3rd sliding unit by the sleeve of drive mechanism rotation and another driving screw that is threaded mutually with sleeve; Transmission by driving mechanism can drive second and three sliding units simultaneously, protrudes out or the start of retraction with respect to first sliding unit.

Lowering or hoisting gear of the present utility model, each driving screw be arranged in parallel and can be general mutually, processing and the heat treatment expense that can simplify overall structure and save each element, and can effectively reduce cost.

Description of drawings

Fig. 1 is an assembled sectional view of the present utility model;

Fig. 2 is a local amplification view of the present utility model;

Fig. 3 is the 3-3 sectional view of Fig. 2;

Fig. 4 is the 4-4 sectional view of Fig. 2;

Fig. 5 is a user mode sectional view of the present utility model;

Fig. 6 is another each embodiment's of the utility model a local assembled sectional view.

The primary clustering symbol description is as follows:

Driving mechanism 10

Pedestal 11 motors 12

Transmission shaft 121

Idle pulley 13

First driving mechanism 20

Driving screw 21 first gears 22

Telescopic tube assembly 23 telescopic pipes 231

Nut 232 outer sleeves 233

Guide block 234 guide grooves 235

Latch 24

Second driving mechanism 30

Sleeve 31 internal threads 311

Second gear, 312 driving screws 32

Sleeve pipe 33

First sliding unit 5

Second sliding unit 6

The 3rd sliding unit 7

Embodiment

Relevant feature of the present utility model and technology contents see also following detailed description and accompanying drawing, yet accompanying drawing only provides reference and explanation, is not to be used for the utility model is limited.

See also Fig. 1 to shown in Figure 4, the utility model provides a kind of pair of driving screw lowering or hoisting gear, this lowering or hoisting gear is connected on first sliding unit 5, second sliding unit 6 and the 3rd sliding unit 7 of mutual socket, thereby can control the mutual slippage between each sliding

unit

5,6,7, each

sliding unit

5,6,7 can be the hollow, rectangular pipe that size does not wait.This lowering or hoisting gear comprises driving mechanism 10, first driving mechanism 20 and second driving mechanism 30, wherein:

Driving mechanism 10 is fixed in first sliding unit, 5 bottoms, and it comprises box-shaped pedestal 11 that is fixed on first sliding unit, 5 bottoms and the motor 12 that is connected in the top board of pedestal 11.Center at motor 12 has outwards protruded out transmission shaft 121, is socketed with spur wheel on transmission shaft 121, and is provided with in pedestal 11 inside and the be meshing with each other idle pulley 13 of transmission of spur wheel.

First driving mechanism 20 comprises driving screw 21, first gear 22 and telescopic tube assembly 23, and the transmission shaft 121 that driving screw 21 is parallel to motor 12 is provided with, and its bottom penetrates pedestal 11 inside of driving mechanism 10, and by bearing fixing in pedestal 11.First gear 22 is socketed in the bottom of driving screw 21 and with driving screw 21 rotations, first gear 22 is by idle pulley 13 transmissions of driving mechanism 10.Telescopic tube assembly 23 comprises telescopic pipe 231, be fixed in telescopic pipe 231 the bottom nut 232 and be socketed on the outer sleeve 233 of telescopic pipe 231 outsides.Nut 232 is threaded on the driving screw 21, and be provided with a plurality of guide blocks 234 (as shown in Figure 4) at its outer peripheral edge spacer ring, telescopic pipe 231 is provided with the guide groove 235 that matches with guide block 234 in outer sleeve 233 inside in addition, so that can be done linear moving with respect to driving screw 21.Be fixed on the top of second sliding unit 6 by latch 24 on the top of telescopic pipe 231 in addition.

Second driving mechanism 30 is parallel to a side setting of first driving mechanism 20, and it comprises sleeve 31, driving screw 32 and sleeve pipe 33.Sleeve 31 is a cylindrical body, and by bearing fixing in pedestal 11, sleeve 31 inside have the internal thread 311 that is threaded with driving screw 32, outside then form second gear 312 that is meshing with each other and rotates with first gear 22, so that sleeve 31 can be by first driving mechanism, 20 rotary driving, the bottom of driving screw 32 is fixed in the bottom of the 3rd sliding unit 7, and the bottom of sleeve pipe 33 is plugged in pedestal 11 and be sheathed on driving screw 32 outsides.

See also shown in Figure 5, lowering or hoisting gear of the present utility model can be installed on electronic table, the beddo, during use, transmission shaft 121 rotations by motor 12, order about idle pulley 13 and produce corresponding the rotation, utilize idle pulley 13 to drive first gear 22 and driving screw 21 turn together again, wherein driving screw 21 is done the linear start that protrudes out with the telescopic tube assembly 23 that motion thread connects thereon, and makes second sliding unit 6 that is fixed in telescopic pipe 231 ends do to stretch out action with respect to first sliding unit 5.Rotate by first gear, 22 transmissions, second gear 312 in addition, and make driving screw 32 do linear moving with respect to sleeve 31, because the bottom of driving screw 32 is fixed on the 3rd sliding unit 7, can orders about the 3rd sliding unit 7 and do to stretch out action with respect to first sliding unit 5.Otherwise the counter-rotating of the transmission shaft 121 by motor 12 can drive second sliding unit 6 and the 3rd sliding unit 7, does the start of retraction with respect to first sliding unit 5.

See also shown in Figure 6, driving mechanism 10 of the present utility model is except that the kenel that can be the foregoing description, also motor 12 can be fixed on the side plate of pedestal 11, and make transmission shaft 121 penetrate pedestal 11 inside perpendicular to each driving

screw

21,32, to drive second gear, 312 rotations of first gear 22 and sleeve 31 simultaneously.Transmission shaft 121 is a worm screw, first gear 22, second gear 312 be the worm gear for matching with worm screw and rotating then, wherein first gear 22 is with driving screw 21 rotations, to drive telescopic pipe 231 and nut 232 and do linear moving, and make second sliding unit 6 that is fixed in telescopic pipe 231 ends do to stretch out action with respect to first sliding unit 5 with respect to it.Sleeve 31 rotations will drive driving screw 32 and do linear moving with respect to it in addition, and because the bottom of driving screw 32 is fixed on the 3rd sliding unit 7, can orders about the 3rd sliding unit 7 and do to stretch out action with respect to first sliding unit 5.So, can do local change, more increase the use category of this lowering or hoisting gear according to the user demand of various different products.

Yet, the above only is a preferable possible embodiments of the present utility model, be not so promptly limit to claim of the present utility model, the equivalent structure that all utilization the utility model specifications and accompanying drawing content are done changes, or directly or indirectly apply to other relevant technical fields, all in like manner all be included in the scope that the utility model contains.

Claims

1. two driving screw lowering or hoisting gear, described lowering or hoisting gear are connected to first and second and the 3rd sliding unit (5,6 of mutual socket, 7) on, and can control mutual slippage between each sliding unit (5,6,7), it is characterized in that described lowering or hoisting gear comprises:

Driving mechanism (10) is fixed in the bottom of first sliding unit (5);

First driving mechanism (20), comprise the driving screw (21) that is connected in driving mechanism (10) and be threadedly connected to driving screw (21) and can it make linearly moving telescopic tube assembly (23) relatively, described driving screw (21) is driven by driving mechanism (10), and the other end of described telescopic tube assembly (23) is fixed in the top of second sliding unit (6); And

Second driving mechanism (30), be parallel to a side setting of first driving mechanism (20), described second driving mechanism (30) comprises that the sleeve (31) by first driving mechanism (20) rotary driving reaches another driving screw (32) that is threaded mutually with sleeve (31), and an end of described driving screw (32) is fixed in the bottom of the 3rd sliding unit (7).

2. as claimed in claim 1 pair of driving screw lowering or hoisting gear, it is characterized in that described driving mechanism (10) comprises pedestal (11) that is fixed on first sliding unit (5) bottom and the motor (12) that is fixed in pedestal (11) one sides, protruded out transmission shaft (121) at the center of described motor (12), described in addition first driving mechanism (20) also comprises first gear (22) that is fixed in driving screw (21), sleeve (31) outside of second driving mechanism (30) is formed with second gear (312), described transmission shaft (121) drives first gear (22) rotation, and described first gear (22) drives second gear (312) and rotates.

3. as claimed in claim 2 pair of driving screw lowering or hoisting gear is characterized in that the transmission shaft (121) of described motor (12) is parallel to driving screw (21) setting of first driving mechanism (20).

4. as claimed in claim 2 pair of driving screw lowering or hoisting gear is characterized in that described driving mechanism (10) also comprises idle pulley (13), and it is fixed on pedestal (11) inside and rotates with transmission shaft (121) and first gear (22) engagement respectively.

5. as claimed in claim 1 pair of driving screw lowering or hoisting gear, the telescopic tube assembly (23) that it is characterized in that described first driving mechanism (20) comprises telescopic pipe (231), is fixed in the nut (232) of telescopic pipe (231) one ends and is sheathed on the outside outer sleeve (233) of telescopic pipe (231), described nut (232) is threaded with the driving screw (21) of first driving mechanism (20), and the other end of described telescopic pipe (231) is fixed in the top of second sliding unit (6).

6. as claimed in claim 5 pair of driving screw lowering or hoisting gear is characterized in that described nut (232) outer peripheral edge spacer ring is provided with a plurality of guide blocks (234), and described outer sleeve (233) inside is provided with the guide groove (235) that matches with described guide block (234).

7. two driving screw lowering or hoisting gear, described lowering or hoisting gear is connected on first and second and the 3rd sliding unit (5,6,7) of mutual socket, can control the mutual slippage between each sliding unit (5,6,7), it is characterized in that described lowering or hoisting gear comprises:

Driving mechanism (10) is fixed in the bottom of first sliding unit (5);

Second driving mechanism (30), be parallel to a side setting of first driving mechanism (20), described second driving mechanism (30) comprises that the sleeve (31) by driving mechanism (10) rotary driving reaches another driving screw (32) that is threaded mutually with sleeve (31), and an end of described driving screw (32) is fixed in the bottom of the 3rd sliding unit (7).

8. as claimed in claim 7 pair of driving screw lowering or hoisting gear, it is characterized in that described driving mechanism (10) comprises pedestal (11) that is fixed in first sliding unit (5) bottom and the motor (12) that is fixed in pedestal (11), protruded out transmission shaft (121) at the center of motor (12), described first driving mechanism (20) also comprises first gear (22) that is fixed in driving screw (21) bottom, sleeve (31) outside of second driving mechanism (30) is formed with second gear (312), and described first and second gear (22,312) is simultaneously by transmission shaft (121) rotary driving.

9. as claimed in claim 8 pair of driving screw lowering or hoisting gear is characterized in that driving screw (21) setting of the transmission shaft (121) of described motor (12) perpendicular to first driving mechanism (10).

10. as claimed in claim 7 pair of driving screw lowering or hoisting gear, the telescopic tube assembly (23) that it is characterized in that described first driving mechanism (20) comprises telescopic pipe (231), is fixed in the nut (232) of telescopic pipe (231) one ends and is sheathed on the outside outer sleeve (233) of telescopic pipe (231), described nut (232) is threaded with the driving screw (21) of first driving mechanism (20), and the other end of described telescopic pipe (23) is fixed on the top of second sliding unit (6).

11. as claimed in claim 10 pair of driving screw lowering or hoisting gear is characterized in that described nut (232) outer peripheral edge spacer ring is provided with a plurality of guide blocks (234), described outer sleeve (233) inside is provided with the guide groove (235) that matches with described guide block (234).