CN207276085U - Telescopic arm - Google Patents
Telescopic arm Download PDFInfo
- Publication number
- CN207276085U CN207276085U CN201721209215.XU CN201721209215U CN207276085U CN 207276085 U CN207276085 U CN 207276085U CN 201721209215 U CN201721209215 U CN 201721209215U CN 207276085 U CN207276085 U CN 207276085U
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- CN
- China
- Prior art keywords
- rack
- support arm
- telescopic arm
- bar
- side plate
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of telescopic arm.The telescopic arm includes：Support arm, offers the bar-shaped trough for penetrating through the support arm on the support arm, is both provided with slideway on two opposite side walls in the bar-shaped trough, the extending direction of the bar-shaped trough, the support arm and two slideways is set in the same direction；Rack, the extending direction of the rack along the support arm are arranged in the bar-shaped trough；Two sides of the rack are slidably engaged with two slideways respectively；Drive gear, the drive gear are meshed with the rack, to drive the rack to be slided along the slideway.Telescopic arm structure intensity provided by the utility model is higher, service life is longer；Stroke control accuracy is higher.
Description
Technical field
It the utility model is related to technical field of mechanical transmission, more particularly to a kind of telescopic arm.
Background technology
Telescopic arm is widely used in the arm for needing the industrial robot into row distance adjusting as important transmission parts
Body, crane, living utensil (such as desk lamp, bed) etc..
In the prior art.Telescopic arm usually construction is as follows：Make two tabular components linearly extending respective at its
Central portion intersects in X fonts, and rotationally links both via axis in its crosspoint and form cross unit, then will be more
The junction that this cross unit connects two cross units in a row and adjacent in a direction can turn relative to one another
It is dynamic.
There is following problem for the telescopic arm that the prior art is provided：
1) structural strength of telescopic arm is relatively low, fragile.With the elongation of telescopic arm, the torque that telescopic arm is born increases,
It is easily damaged between the cross unit；
2) the stroke control difficulty of telescopic arm is larger.The structure setting of telescopic arm is multiple intersections in the prior art
Unit is sequentially connected in a row, and in telescopic process, each the stroke of the cross unit is consistent, therefore, telescopic arm
Integral telescopic amount is the summation of the stroke of each cross unit, and when needing flexible amount smaller, control difficulty is larger.
Utility model content
The utility model provides a kind of telescopic arm, it is desirable to provide it is flexible that a kind of structural strength is higher, service life is longer
Arm；The accurate control to the stroke of telescopic arm is realized at the same time, so as to solve problems of the prior art.
Telescopic arm provided by the utility model includes including support arm：Support arm, offers perforation on the support arm
The bar-shaped trough of the support arm, is both provided with slideway, the bar-shaped trough, the branch in the bar-shaped trough on two opposite side walls
The extending direction of brace and two slideways is set in the same direction；Rack, extension side of the rack along the support arm
To being arranged in the bar-shaped trough；Two sides of the rack are slidably engaged with two slideways respectively；Sliding tooth
Wheel, the drive gear is meshed with the rack, to drive the rack to be slided along the slideway.
Further, multiple first through hole are offered on the side of the rack, multiple first through hole are along the support
The extending direction of arm is arranged successively.
Further, the two side walls of the bar-shaped trough are respectively the first wall and the second wall, on first wall and institute
State and multiple the second through holes arranged along the support arm extending direction are offered on the second wall, each second through hole is all provided with
It is placed in around two slideways；Multiple second through holes on first wall are with being located on second wall
Multiple second through holes align one by one.
Further, the support arm includes the first side plate and the second side plate, first side plate and second side plate
It is oppositely arranged, the bottom of first side plate and the bottom of second side plate are fixedly connected to form the bar-shaped trough.
Further, the bottom of the bottom of first side plate and second side plate is spirally connected fixation.
Further, each slideway includes the raised item that two extending directions along the support arm are set, the rack
Lug boss is both provided with two sides, each lug boss is set along the extending direction of the support arm, each described convex
The portion of rising is stuck between two raised items of the corresponding slideway.
Further, the telescopic arm includes multiple racks, and multiple racks in the same direction sequentially arrange by head and the tail；Each institute
The head end face for stating rack is connected with the first abutment plane of underrun, and the breech face of each rack is supported with underrun second
Plane is connect to be connected；For two racks of arbitrary neighborhood, the head end of the latter rack and the tail end of previous rack are hinged
Connection, the previous rack can rotate the second abutment plane and described the latter until the previous rack along articulated shaft
First abutment plane of rack fits.
Further, plane of the plane where the first abutment plane of each rack where with the head end face of the rack
Angle be α, the plane where the second abutment plane of each rack and the plane where the breech face of the rack
Angle is β, then has：α=β.
Further, the number of the rack is N number of then to have：α≤45°/(N-1).
Preferably, the length of the telescopic arm is greater than or equal to the total length of all racks.
Using telescopic arm provided by the utility model, by setting the support arm, the rack and the driving
Gear, the rack can be stretched by two slideways being arranged on the support arm, the structure of the rack
Intensity is higher, and is fixed and supports protection by the support arm, so as to ensure that the utility model has higher knot
Structure intensity and longer service life；Stretched by rack described in the rotation driving of the drive gear, the control of stroke
It is more accurate；By opening up the first through hole and second through hole, it ensure that the assembling of the utility model is more convenient；
By setting the raised item and the lug boss, the guiding and fixed effect of the support arm are improved, is reduced at the same time
The processing capacity of tooth on rack, reduces the manufacture cost of the utility model；By setting first abutment plane, described
Second abutment plane, and set two adjacent racks to be hinged, telescopic arm can realize curvilinear motion, and telescopic location is more
Add flexibly.
Brief description of the drawings
Preferred embodiment in the utility model will be described in detail by attached drawing below, it will help understand the utility model
Objects and advantages, wherein:
Fig. 1 is the structure diagram of support arm in the utility model first preferred embodiment；
Fig. 2 is the structure diagram of the utility model first preferred embodiment middle rack；
Fig. 3 is the sectional view of support arm in the utility model first preferred embodiment；
Fig. 4 is the structure diagram of the utility model the second preferred embodiment middle rack；
Fig. 5 is the connection diagram of the utility model the second preferred embodiment middle rack.
Embodiment
Mention in the present specification or may mention up, down, left, right, before and after, front, the back side, top, bottom etc.
Orientation term is defined relative to the construction shown in each attached drawing, and word " interior " and " outer " refer respectively to direction or remote
From particular elements geometric center direction they be opposite concept, it is therefore possible to can according to its residing diverse location, difference
Use state and correspondingly changed.So also these or other orientation term should not be construed to restricted use
Language.
Fig. 1 is the structure diagram of support arm in the utility model first preferred embodiment；Fig. 2 is the utility model first
The structure diagram of preferred embodiment middle rack；Fig. 3 is the sectional view of support arm in the utility model first preferred embodiment.Such as
Shown in Fig. 1-Fig. 3, the telescopic arm that the utility model first preferred embodiment is provided includes support arm 1, the top of the support arm 1
The bar-shaped trough 11 for penetrating through the support arm 1 is offered on face, wherein, the top surface of the support arm 1 refers to the support shown in Fig. 1
At the upper position of arm 1, slideway 12, the bar-shaped trough 11, institute are both provided with the bar-shaped trough 11 on two opposite side walls
The extending direction for stating support arm 1 and two slideways 12 4 is set in the same direction；Rack 2, the rack 2 is along the support
The extending direction of arm 1 is arranged in the bar-shaped trough 11；Two sides of the rack 2 can be slided with two slideways 12 respectively
Coordinate dynamicly；Drive gear, the drive gear are meshed with the rack 2, to drive the rack 2 to be slided along the slideway 12
It is dynamic.
The utility model first preferred embodiment in use, by two sides of the rack 2 with two described in
Slideway 12 is respectively cooperating with connecting, and the head end that will need flexible load (such as robot arm, lamp cap) and the rack 2
It is fixedly connected, the drive gear is meshed with the rack 2, in the present embodiment, the drive gear is close to the rack 2
Head end set, it is ensured that the rack 2 has longer driving trip (the overhang bigger of i.e. described telescopic arm).It is described
When drive gear rotates forward, 2 retraction of rack；During the drive gear backwards rotation, the rack 2 protracts；Pass through control
The rotation of the drive gear is made, realizes the flexible of the rack 2, and then realize the stretching motion of load.The drive
The rotation of moving gear can realize that power source is stable and control accuracy is higher by the drive of motor.
The utility model first preferred embodiment ensures that the rack 2 can by setting the support arm 1, the rack 2
To be stretched by two be arranged on the support arm 1 slideways 12, the structural strength of the rack 2 is higher, and
Be fixed and support protection by the support arm 1, thus ensure that this preferred embodiment have higher structural strength, with
And longer service life；Flexible by rack 2 described in the rotation driving of the drive gear, the control of stroke is more smart
Really.
As shown in Figure 1 and Figure 2, in the utility model first preferred embodiment, offered on the side of the rack 2 more
A first through hole 21, multiple first through hole 21 are arranged successively along the extending direction of the support arm 1.The support arm 1
Multiple the second through holes 13 through the support arm 1 are offered on side, multiple second through holes 13 are respectively positioned on described in two
The top of slideway 12, multiple second through holes 13 are arranged successively along the extending direction of the support arm 1.During use, lead to
Multiple telescopic arms are often needed to complete the stretching motion of load jointly, for convenience of the work such as assembling and maintenance, by opening
If multiple first through hole 21 and multiple second through holes 13, assembling and maintenance tool may pass through the support arm 1
And the rack 2, conveniently fulfil assignment, avoid the work dismantled to blocking parts.
As shown in figure 3, in the utility model first preferred embodiment, the support arm 1 includes the first side plate 14 and the
Two side plates 15, first side plate 14 are oppositely arranged with second side plate 15, the bottom of first side plate 14 and described the
The bottom of two side plates 15 is fixedly connected to form the bar-shaped trough 11.The support arm 1 is using first side plate 14 and described
Second side plate 15 is spliced to form, and it is more square easily to realize the operation such as the dismounting of the support arm 1, maintenance, replacement, cleaning
Just.In this preferred embodiment, the bottom of the bottom of first side plate 14 and second side plate 15 is spirally connected fixation, using being spirally connected
Fixed form, fixed effect is preferable, and dismantle it is convenient.
As shown in figure 3, in the utility model first preferred embodiment, each slideway 12 includes two along the support arm 1
Extending direction set raised item, be respectively the first raised item 141, the second raised item 142, third protrusion bar 151, Yi Ji
Four raised items 152；Wherein, first raised item 141 and second raised item 142 are located on first side plate 14,
The third protrusion article 151 and the 4th raised item 152 are located on second side plate 15；First raised item 141
Positioned at the top of second raised item 142, the third protrusion article 151 is located at the top of the 4th raised item 152；It is described
Lug boss is both provided with two sides of rack 2, each lug boss is set along the extending direction of the support arm 1, often
A lug boss is stuck between two raised items of the corresponding slideway 12.Set using the above structure, Ke Yibao
The firm slip of the rack 2 is demonstrate,proved, lifts the operation stability of this preferred embodiment；Meanwhile when first side plate 14 and
When the distance between second side plate 15 is identical, reduce the facewidth of the tooth on rack 2, so as to reduce on the rack 2
The processing capacity of tooth, reduces the manufacture cost of this preferred embodiment.
Fig. 4 is the structure diagram of the utility model the second preferred embodiment middle rack；Fig. 5 is that the utility model second is excellent
Select the connection diagram of embodiment middle rack.As shown in FIG. 4 and 5, the second preferred embodiment provided by the utility model
It is the further improvement carried out on the basis of first preferred embodiment, specifically, the telescopic arm includes multiple racks
2, multiple racks 2 in the same direction sequentially arrange by head and the tail, and the drive gear is mutually nibbled with one or two in multiple racks 2
Close；The head end face of each rack 2 is connected with the first abutment plane of underrun 22, each the breech face of the rack 2 and
The second abutment plane of underrun 23 is connected；For two racks 2 of arbitrary neighborhood, the head end of the latter rack with it is previous
The tail end articulated connection of a rack, the previous rack can be rotated along articulated shaft 24 up to the second of the previous rack supports
Connect plane 23 and the first abutment plane 22 of the latter rack fits；Wherein, the head end of the rack 2 refers to relatively
In the extension direction of the rack 2, the bottom surface of the rack 2 refers to face opposite with ground on the rack 2.This is preferred real
Apply example in the process of running, by taking the drive gear backwards rotation as an example, the rotation of the drive gear drives multiple teeth
Bar 2 is described previous when the previous rack fully slides out the support arm 1 along two 12 forward slips of slideway
Rack is rotated along articulated shaft 24 under gravity, until the second abutment plane 23 on the previous rack is with being located at
First abutment plane 22 of the rack 2 (i.e. described the latter rack) at the previous rack rear abuts against, in rotary course
In, the height of the load relative level can decline therewith；It is achieved thereby that with the extension of the telescopic arm, load
Height decrease；Conversely, when the drive gear rotates forward, the telescopic arm retraction, the height of load increases.
By setting first abutment plane 22, second abutment plane 23, and 2 phase of the rack hinge of adjacent two is set
Connect, telescopic arm can realize curvilinear motion, and telescopic location is more flexible.
As shown in figure 5, in the second preferred embodiment of the utility model, 22 institute of the first abutment plane of each rack 2
Plane and the rack 2 head end face where the angle of plane be α, the second abutment plane 23 of each rack 2
The plane at place and the angle of the plane where the breech face of the rack 2 are β, then have：α=β.Above-mentioned angle sets preferable
It ensure that the stability of telescopic arm in the process of running.
In one alternate embodiment, the number of the rack 2 is N number of then to have：α≤45°/(N-1).Above-mentioned angle is set
Putting can ensure in the process of running, when being only connected with a rack 2 in the support arm 1, in N number of rack 2,
Second abutment plane 23 of previous rack is connected to the first abutment plane 22 of the latter rack, so as to ensure that load
It is stably fixed on rack 2 in telescopic process.
In one alternate embodiment, the length of the telescopic arm is greater than or equal to the total length of all racks 2.On
Complete supporting of the telescopic arm to the rack 2 can be ensured by stating structure setting, and extend this preferred embodiment uses the longevity
Life.
Telescopic arm provided by the utility model, by setting the support arm 1, the rack 2 and the sliding tooth
Wheel, the rack 2 can be stretched by two be arranged on the support arm 1 slideways 12, the knot of the rack 2
Structure intensity is higher, and is fixed and supports protection by the support arm 1, so that it is higher to ensure that the utility model has
Structural strength and longer service life；It is flexible by rack 2 described in the rotation driving of the drive gear, stroke
Control is more accurate；By opening up the first through hole 21 and second through hole 13, the assembling of the utility model ensure that
It is more convenient；By setting the raised item and the lug boss, the guiding of the support arm 1 and fixed effect are improved
Fruit, while reduce the processing capacity of the tooth on rack 2, reduce the manufacture cost of the utility model；By setting described first
Abutment plane 22, second abutment plane 23, and set the rack 2 of adjacent two to be hinged, telescopic arm can be realized
Curvilinear motion, telescopic location are more flexible.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：
It can still modify the technical solution described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technology
The scope of scheme.
Claims (10)
- A kind of 1. telescopic arm, it is characterised in that including：Support arm, offers the bar-shaped trough for penetrating through the support arm on the support arm, two opposite sides in the bar-shaped trough Slideway is both provided with wall, the extending direction of the bar-shaped trough, the support arm and two slideways is set in the same direction Put；Rack, the extending direction of the rack along the support arm are arranged in the bar-shaped trough；Two sides of the rack Slidably engaged respectively with two slideways；Drive gear, the drive gear are meshed with the rack, to drive the rack to be slided along the slideway.
- 2. telescopic arm according to claim 1, it is characterised in that it is logical that multiple first are offered on the side of the rack Hole, multiple first through hole are arranged successively along the extending direction of the support arm.
- 3. telescopic arm according to claim 1, it is characterised in that the two side walls of the bar-shaped trough be respectively the first wall with And second wall, offered on first wall and on second wall multiple along the of support arm extending direction arrangement Two through holes, each second through hole may be contained within around two slideways；It is multiple described on first wall Second through hole aligns one by one with multiple second through holes on second wall.
- 4. telescopic arm according to claim 1, it is characterised in that the support arm includes the first side plate and the second side Plate, first side plate are oppositely arranged with second side plate, the bottom of first side plate and the bottom of second side plate It is fixedly connected to form the bar-shaped trough.
- 5. telescopic arm according to claim 4, it is characterised in that the bottom of first side plate and second side plate Bottom is spirally connected fixation.
- 6. telescopic arm according to claim 1, it is characterised in that each slideway includes the extension two along the support arm The raised item that direction is set, is both provided with lug boss on two sides of the rack, and each lug boss is along the support The extending direction of arm is set, and each lug boss is stuck between two raised items of the corresponding slideway.
- 7. telescopic arm according to claim 1, it is characterised in that the telescopic arm includes multiple racks, Duo Gesuo Stating rack, head and the tail are sequentially arranged in the same direction；The head end face of each rack is connected with the first abutment plane of underrun, Mei Gesuo The breech face for stating rack is connected with the second abutment plane of underrun；For two racks of arbitrary neighborhood, the latter tooth The head end of bar and the tail end of previous rack are articulated and connected, and the previous rack can be rotated along articulated shaft until described previous Second abutment plane of rack and the first abutment plane of the latter rack fit.
- 8. telescopic arm according to claim 7, it is characterised in that flat where the first abutment plane of each rack Face and the angle of the plane where the head end face of the rack are α, the plane where the second abutment plane of each rack Angle with the plane where the breech face of the rack is β, then has：α=β.
- 9. telescopic arm according to claim 8, it is characterised in that the number of the rack is N number of, then has：α≤45°/ (N-1)。
- 10. according to the telescopic arm described in any one in claim 1-9, it is characterised in that the length of the telescopic arm is more than Or the total length equal to all racks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721209215.XU CN207276085U (en) | 2017-09-20 | 2017-09-20 | Telescopic arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721209215.XU CN207276085U (en) | 2017-09-20 | 2017-09-20 | Telescopic arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207276085U true CN207276085U (en) | 2018-04-27 |
Family
ID=61981526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721209215.XU Expired - Fee Related CN207276085U (en) | 2017-09-20 | 2017-09-20 | Telescopic arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207276085U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445079A (en) * | 2017-09-20 | 2017-12-08 | 淏祺教育科技（北京）有限公司 | Telescopic arm |
| CN117533726A (en) * | 2024-01-09 | 2024-02-09 | 苏州艾思泰自动化设备有限公司 | Light telescopic mechanism and conveying equipment comprising same |
-
2017
- 2017-09-20 CN CN201721209215.XU patent/CN207276085U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445079A (en) * | 2017-09-20 | 2017-12-08 | 淏祺教育科技（北京）有限公司 | Telescopic arm |
| CN117533726A (en) * | 2024-01-09 | 2024-02-09 | 苏州艾思泰自动化设备有限公司 | Light telescopic mechanism and conveying equipment comprising same |
| CN117533726B (en) * | 2024-01-09 | 2024-04-09 | 苏州艾思泰自动化设备有限公司 | Light telescopic mechanism and conveying equipment comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180427 Termination date: 20200920 |