CN208232727U - A kind of linear expansion bar - Google Patents
A kind of linear expansion bar Download PDFInfo
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- CN208232727U CN208232727U CN201820405591.4U CN201820405591U CN208232727U CN 208232727 U CN208232727 U CN 208232727U CN 201820405591 U CN201820405591 U CN 201820405591U CN 208232727 U CN208232727 U CN 208232727U
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- connecting rod
- rod
- plain bearing
- spherical plain
- linear expansion
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- 239000011247 coating layer Substances 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 7
- 239000000725 suspension Substances 0.000 description 40
- 230000007246 mechanism Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 208000005408 Metatarsus Varus Diseases 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The utility model discloses a kind of linear expansion bars, including first connecting rod, second connecting rod and prismatic pair, the first end of the first connecting rod is connect with the first end of the second connecting rod by the prismatic pair, and the second end of the second end of the first connecting rod and the second connecting rod is all connected with two spherical plain bearing rod ends.Pass through four spherical plain bearing rod ends of the second end setting of the second end and second connecting rod in first connecting rod, so that linear expansion bar described in the utility model is when in face of the load of long-time, complexity, still it is able to maintain good working order, the friction and abrasion between guide rod and engaging lug or gasket are avoided, the service life of guide rod is improved.
Description
Technical field
The utility model relates to automobile suspension systems, and in particular, to a kind of linear expansion bar.
Background technique
Suspension is to guarantee there is elasticity between wheel or vehicle bridge and automobile bearing system (vehicle frame or monocoque body)
Load is contacted and can be transmitted, impact, decaying vibration are mitigated and adjusts the automobile related dress such as vehicle body position in the process of moving
The general name set.General suspension is mainly made of elastic element, damping device and guiding mechanism three parts.In some cases, certain
One components and plays two kinds or three kinds, for example leaf spring is simultaneous plays elastic element and guiding mechanism.Wherein lead
Power and torque reliable delivery all between wheel and vehicle body or vehicle frame are to ensure that the function of mechanism, and determine wheel relative to
The placement property of vehicle body or vehicle frame.The variation feelings of motion profile and wheel alignment parameter when guiding mechanism determines wheel hop
The position of roll center and trim center before and after condition and automobile, largely affect vehicle control stability and
Anti- trim ability.
The characteristics of according to guiding mechanism, automotive suspension can be mainly divided into rigid axle suspension and independent suspension two major classes.It is non-
Independent suspension is typically characterized by between left and right wheels by a buckstay or the connection of non-disconnected vehicle bridge, when unilateral wheel
When bounce, other side wheel is directly influenced.The stationarity of Non-separation suspension system and comfort are poor, but have again make simultaneously
The feature that valence is low, bearing capacity is big, the rear suspension of part pony car and lorry, motor bus are equipped with this suspension system at present.Solely
The wheel for being structurally characterized in that two sides of vertical suspension couples individually through resilient suspension with vehicle body or vehicle frame, and vehicle bridge is made into disconnection
Formula.Therefore, independent suspension has the advantage that 1. two sides wheel can move alone and is independent of each other, and improves handling；2. reducing
Nonspring carried mass is conducive to the ride comfort of automobile；3. using broken bridge of car, engine location can be reduced, reduces vehicle weight
The heart；4. wheel movement space is larger, suspension rate can be reduced, improves ride comfort.The above advantage makes independent suspension by widely
It applies on automobile, the deflecting roller of especially car has all generallyd use independent suspension, in order to improve driving safety, increasingly
The rear overhang of more sedan limousines also uses independent suspension.
In terms of the difference of suspension property, guiding mechanism accounts for very big factor, and the characteristics of motion of guiding mechanism directly affects vehicle
Take turns the variation of positional parameter.Although the structure of suspension is different, final purpose is all by various designs so that front-wheel
The variation of positional parameter during the motion is reasonable and small as far as possible.Currently, most widely used independent suspension is main on automobile
Have: McPherson strut, double cross arm independent suspension and multi-connecting-rod separated suspension.Generally speaking, current most economical applicable, sexual valence
It is MacPherson type than highest independent front suspension；It is multi link and double wish-bone arm type that high-performance adjustment and matched suspension, which can be done,；Knot
It is multi link formula that structure is most complicated, realizes function at most.
Although conventional independent suspension can functionally meet suspension design requirement at present, work as wheel hop
When, wheel alignment parameter can change.In practical applications, the variation of any positional parameter of wheel all can be to automobile operation stabilization
Property or other aspect performances have an adverse effect, such as wheelspan variation will lead to automobile straight-line travelling ability decline, simultaneously
Also cause rolling resistance increase and the influence to steering system；The variation of camber angle will lead to abnormal tyre abrasion.Mai Fu
It is inferior that damper lower fulcrum changes therewith with sideway arm swing, the oblique angle of main pin axis when being suspended in wheel and moving up and down, because
This its wheel alignment parameter has a greater change in Suspension movement.Double fork arm type equal suspensions, can by rationally designing upper lower cross arm
So that wheel and stub Parameters variation are little；It, cannot fundamentally solution portion but due to being limited by guiding mechanism motion principle
Positional parameter is divided to change excessive problem.Resonable refer to of multi-link lever suspension fork motion profile is essentially all complicated space curve,
So that situation of change of wheel alignment parameter during wheel moves up and down is more outstanding than traditional McPherson suspension and double transverse arms
Frame etc. is more severe；And suspension adjustment and matched difficulty are big, and movement and power performance are very sensitive to structural parameters, if
It is improper to match, and the variation range of wheel alignment parameter can be very big.
The rod end of currently used suspension guide rod is turning joint, although turning joint can preferably be born along hinge
Radial load, but when bearing along the load of hinge axial direction, performance is bad, be easy to cause guide rod and engaging lug or
Friction and abrasion between person's gasket.After longevity of service, be easy to cause between suspension guide rod and engaging lug generate it is empty
Gap works undesirable, influences suspension property and vehicle maneuvering performance.
Utility model content
In view of problem above, the purpose of the utility model is to provide a kind of linear expansion bars, are led with solving existing suspension
When bearing to bar along rod end turning joint axial load, easily causes and rub and wear between guide rod and engaging lug or gasket, from
And the problem of influencing suspension property and vehicle maneuvering performance.
To achieve the goals above, the one aspect of the utility model is to provide a kind of linear expansion bar, including first connects
The first end of bar, second connecting rod and prismatic pair, the first end of the first connecting rod and the second connecting rod passes through the prismatic pair
The second end of connection, the second end of the first connecting rod and the second connecting rod is all connected with two spherical plain bearing rod ends.
Preferably, the spherical plain bearing rod end is external screw thread spherical plain bearing rod end, the external screw thread spherical plain bearing rod end tool
The second end of threaded end, the second end of the first connecting rod and the second connecting rod is provided with link block, each link block
With two through-holes towards the end face of the second end, each end of thread passes through a through-hole, and is fixed by nut
The external screw thread spherical plain bearing rod end and the link block.
Preferably, the spherical plain bearing rod end is internal screw thread spherical plain bearing rod end, the internal screw thread spherical plain bearing rod end
There is inner hole, the second end of the second end of the first connecting rod and the second connecting rod is provided with link block, each in rod end
The two sides of link block are stretched out from the both ends of the end face of the second end of the first connecting rod or the second end of the second connecting rod, and
A through-hole is respectively arranged on the both ends of stretching, bolt passes through institute from the direction of the first end towards the second end respectively
It states through-hole to be inserted into the inner hole, be connect with the screw-internal thread fit in the inner hole.
Preferably, the rod end for two spherical plain bearing rod ends connecting with the same end is parallel to each other, and the equal length of rod end.
Preferably, the end face of the second end of the first connecting rod and/or the second end of the second connecting rod, which is provided with, concaves towards
First groove in the direction of the first end, on the link block surface opposite with the first connecting rod or the second connecting rod
It is provided with protrusion, the protrusion is connected with first groove interference fit,
Alternatively, the link block surface opposite with the first connecting rod or the second connecting rod is provided with the second groove,
The first connecting rod or the second connecting rod and second groove interference fit connect.
Preferably, the first connecting rod and/or the second connecting rod are integrally formed with corresponding link block.
Preferably, the flexural pivot axis for two spherical plain bearing rod ends connecting with the same end is parallel to each other, and with described first
The upper surface of connecting rod or the second connecting rod is vertical, alternatively, the flexural pivot axis for two spherical plain bearing rod ends connecting with the same end
On the same line, and with the axis of first connecting rod or second connecting rod in the same plane.
Preferably, the centre of sphere line for two spherical plain bearing rod ends being connect with the second end of the first connecting rod and with it is described
The centre of sphere line of two spherical plain bearing rod ends of the second end connection of second connecting rod is parallel.
Preferably, the first end of the first connecting rod is provided with free-sliding spline axis, the first end setting of the second connecting rod
There is free-sliding spline axle sleeve, the free-sliding spline axis and the free-sliding spline axle sleeve are cooperatively connected.
Preferably, the inner surface of the outer surface of the free-sliding spline axis and the free-sliding spline axle sleeve is coated with macromolecule painting
Layer.
Compared with prior art, the utility model has the following advantages and beneficial effects:
The utility model is applied to independent suspension, by being arranged in the second end of first connecting rod and the second end of second connecting rod
Four spherical plain bearing rod ends so that linear expansion bar described in the utility model in face of for a long time, complicated service load when,
It is still able to maintain good working order, avoids friction and abrasion between guide rod and engaging lug or gasket, raising is led
To the service life of bar.
By the linear expansion bar, so that wheel can only realize the flare of wheel along linear motion in bounce
Angle, kingpin inclination and back rake angle, toeing-in, wheel posterior cord, left and right wheels away from and the positional parameters such as wheel base in wheel
It is held essentially constant during moving up and down, to improve the handling of vehicle, reduces the abrasion of tire.
Detailed description of the invention
Fig. 1 is linear expansion bar preferred embodiment structural schematic diagram described in the utility model；
Fig. 2 is another example structure schematic diagram of linear expansion bar described in the utility model.
Specific embodiment
Embodiment described in the utility model described below with reference to the accompanying drawings.Those skilled in the art can recognize
Know, it, can be with a variety of different modes or combinations thereof to institute without departing from the spirit and scope of the utility model
The embodiment of description is modified.Therefore, attached drawing and description are regarded as illustrative in nature, rather than for limiting claim
Protection scope.In addition, in the present specification, attached drawing is drawn not in scale, and identical appended drawing reference indicates identical portion
Point.
The present embodiment is described in detail below with reference to Fig. 1 and Fig. 2.
Fig. 1 is linear expansion bar preferred embodiment structural schematic diagram described in the utility model, as shown in Figure 1, this is practical new
Linear expansion bar described in type includes first connecting rod 2, second connecting rod 3 and prismatic pair, the first end and second connecting rod 3 of first connecting rod 2
First end connected by prismatic pair, the second end of first connecting rod 2 and the second end of second connecting rod 3 are all connected with two rod end joints
Bearing 1.
Four spherical plain bearing rod ends are connected by the end of two connecting rods in linear expansion bar, by existing turning joint
Some stress, are converted into two points stress, allow the linear expansion bar in the utility model to undertake the load of hinge axial direction, make
Guide rod still is able to keep preferable working condition, reliability and service life obtain in the working environment of complicated applied force
To raising.
Also, spherical plain bearing rod end 1 is easily bought, cheap, reduces the manufacturing cost of linear expansion bar.
Spherical plain bearing rod end 1 can be external screw thread spherical plain bearing rod end, be also possible to internal screw thread spherical plain bearing rod end.Fig. 2
It is another example structure schematic diagram of linear expansion bar described in the utility model, as shown in Fig. 2, when spherical plain bearing rod end 1 is interior
When screw thread spherical plain bearing rod end, there is inner hole in the rod end of internal screw thread spherical plain bearing rod end, in the second end of first connecting rod 2 and the
The second end of two connecting rods 3 is provided with link block 5, the two sides of each link block 5 from first connecting rod 2 or second connecting rod 3 second
The both ends of the end face at end are stretched out, and are respectively arranged with a through-hole at the both ends of stretching, the position of through-hole not with first connecting rod 2 and
The position of second connecting rod 3 interferes, and the aperture of through-hole is greater than the outer diameter of bolt 41, and four bolts 41 are respectively from first connecting rod
2 or second connecting rod 3 first end direction towards the direction of second end pass through link block 5 through-hole be inserted into corresponding rod end
Kong Zhong, bolt 41 are connect with the screw-internal thread fit of rod end inner hole, to be fixedly connected with block 5 and spherical plain bearing rod end 1.
As shown in Figure 1, when spherical plain bearing rod end 1 is external screw thread spherical plain bearing rod end, external screw thread spherical plain bearing rod end tool
Threaded end is provided with link block 5 in the second end of first connecting rod 2 and the second end of second connecting rod 3, and each link block 5 has
There are two through-holes towards the end face of first connecting rod 2 or second connecting rod 3, and the aperture of through-hole is greater than the spiral shell of spherical plain bearing rod end 1
The end of thread of the outer diameter at line end, spherical plain bearing rod end 1 passes through through-hole, is cooperatively connected by the external screw thread of nut and the end of thread, from
And fix the link block of external screw thread spherical plain bearing rod end and first connecting rod 2 or second connecting rod 3.
Wherein, spherical plain bearing rod end 1 uses standard component, and even single part is impaired, can also replace rapidly, reduction pair
The influence of suspension overall applicability.And using the spherical plain bearing rod end or rod end bulb of standard, being also convenient for entire vehicle design, person is directed to not
Different spherical plain bearing rod end or rod end bulb are replaced with situation.
When selecting and installing spherical plain bearing rod end, is required according to entire vehicle design, select the specific ruler of spherical plain bearing rod end
It is very little.Preferably, the rod end for two spherical plain bearing rod ends 1 connecting with the same link block 5 is parallel to each other, and the length of two rod ends
It spends equal.
The link block 5 of the second end of first connecting rod 2 or second connecting rod 3 and its end can there are many connection type, first
Connecting rod 2 or second connecting rod 3 and link block 5 can be independent two components, be also possible to an integrally formed entirety.
When first connecting rod 2 or second connecting rod 3 and link block 5 are independent two components, the second end of first connecting rod 2
And/or the end face of the second end of second connecting rod 3 is provided with the first groove for concaving towards the direction of the corresponding first end of connecting rod, connection
Protrusion is provided on the surface opposite with first connecting rod 2 or second connecting rod 3 of block 5, the protrusion is matched with the first groove interference
Close connection.
Alternatively, the surface opposite with first connecting rod 2 or second connecting rod 3 of link block 5 is provided with the second groove, first connecting rod 2
Or second connecting rod 3 and the second groove interference fit connect.
For the ease of installation of the linear expansion bar in suspension entirety, it is preferable that two connect with the same end
The flexural pivot axis of spherical plain bearing rod end 1 is parallel to each other, and vertical with the upper surface of first connecting rod 2 or second connecting rod 3, that is, is pacifying
Fill spherical plain bearing rod end when, guarantee that the flexural pivot axis of spherical plain bearing rod end is parallel to each other, and with first connecting rod 2 or second connecting rod 3
Upper surface it is vertical and then tighten nut or bolt.
Fig. 2 is another example structure schematic diagram of linear expansion bar described in the utility model, as shown in Fig. 2, and the same end
The flexural pivot axis of two spherical plain bearing rod ends 1 of connection is not parallel to each other, but on the same line, and with first connecting rod 2
Or the axis of second connecting rod 3 is in the same plane.By the spherical plain bearing rod end rotation that two flexural pivot axis are parallel to each other in Fig. 1
90 °, that is, reach the state of two spherical plain bearing rod end flexural pivot axis collinears in Fig. 2.
Spherical plain bearing rod end in two embodiments of Fig. 1 and Fig. 2 is external screw thread spherical plain bearing rod end and internal screw thread bar respectively
Hold oscillating bearing, either external screw thread spherical plain bearing rod end or internal screw thread spherical plain bearing rod end, two bars positioned at the same end
The flexural pivot axis for holding oscillating bearing is that can both be parallel to each other, and is also possible to be located along the same line, without that must fix
Combination.
For the ease of under the action of the linear expansion bar, constraining the direction of motion of the wheel in hopping process, control
The motion profile of wheel, so that wheel can only be along linear motion in bounce, it is preferable that connect with the second end of first connecting rod 2
The centre of sphere line of two spherical plain bearing rod ends connect and the ball for two spherical plain bearing rod ends being connect with the second end of second connecting rod 3
Heart line is parallel, so that the centre of sphere of four spherical plain bearing rod ends of the linear expansion bar is in the same plane.
In the utility model, the prismatic pair of the linear expansion bar can be various forms of linear guiding structures, can be with
Freely extend.For example, prismatic pair can be free-sliding spline pair, it is also possible to rolling spline pair, and it is without being limited thereto.Preferably,
The first end of one connecting rod 2 is provided with free-sliding spline axis, and the first end of second connecting rod 3 is provided with free-sliding spline axle sleeve, free-sliding spline
Axis and free-sliding spline axle sleeve are cooperatively connected, to realize the relative motion between first connecting rod and second connecting rod, realize guide rod
It is freely extended along axial.
For the ease of the lubrication between free-sliding spline axis and free-sliding spline axle sleeve, abrasion between the two is reduced, it is preferable that
The outer surface of free-sliding spline axis and the inner surface of free-sliding spline axle sleeve are coated with polymeric coating layer.
The installation process of linear expansion bar described in the utility model is as follows:
When installation, the cunning of the first end setting of free-sliding spline axis and second connecting rod 3 that the first end of first connecting rod 2 is arranged
Dynamic hub splines is cooperatively connected.According to the design requirement of vehicle, the spherical plain bearing rod end of selection criteria, by two external screw thread rod ends
In two through-holes that the link block 5 that the end of thread of oscillating bearing 1 is each passed through the second end of first connecting rod 2 is arranged, two are adjusted
The flexural pivot axis of spherical plain bearing rod end is parallel to each other, and is mutually perpendicular to the upper surface of first connecting rod 2, tightens nut, completes the
The installation of two spherical plain bearing rod ends of one connecting rod second end.Similarly, then in the same way second connecting rod second end is installed
Two spherical plain bearing rod ends, it is preferable that adjust second connecting rod second end two spherical plain bearing rod ends position when, not only
Guarantee that the flexural pivot axis of two spherical plain bearing rod ends is parallel to each other, and vertical with the upper surface of second connecting rod, and to guarantee
In the centre of sphere line of two spherical plain bearing rod ends of second connecting rod second end and two of installed first connecting rod second end
The centre of sphere line of spherical plain bearing rod end is parallel to each other, to guarantee the centre of sphere of four spherical plain bearing rod ends in the same plane.
The utility model is applied to independent suspension, by the camber angle of the linear expansion bar realization wheel, stub
Inclination angle and back rake angle, toeing-in, wheel posterior cord, left and right wheels away from and the positional parameters such as wheel base moved up and down in wheel
It is held essentially constant in journey, to improve the handling of vehicle, reduces the abrasion of tire.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of linear expansion bar, which is characterized in that including first connecting rod, second connecting rod and prismatic pair, the first connecting rod
First end is connect with the first end of the second connecting rod by the prismatic pair, the second end of the first connecting rod and described second
The second end of connecting rod is all connected with two spherical plain bearing rod ends.
2. linear expansion bar according to claim 1, which is characterized in that the spherical plain bearing rod end is that external screw thread rod end closes
Bearings, the external screw thread spherical plain bearing rod end have the end of thread, the second end of the first connecting rod and the second connecting rod
Second end is provided with link block, and each link block has two through-holes towards the end face of the second end, each spiral shell
Line end passes through a through-hole, and passes through the fixed external screw thread spherical plain bearing rod end of nut and the link block.
3. linear expansion bar according to claim 1, which is characterized in that the spherical plain bearing rod end is that internal screw thread rod end closes
Bearings have inner hole, the second end of the first connecting rod and described second in the rod end of the internal screw thread spherical plain bearing rod end
The second end of connecting rod is provided with link block, and the two sides of each link block connect from the second end of the first connecting rod or described second
The both ends of the end face of the second end of bar are stretched out, and a through-hole is respectively arranged on the both ends of stretching, and bolt is respectively from described
The direction of first end passes through the through-hole towards the second end and is inserted into the inner hole, with the screw-internal thread fit in the inner hole
Connection.
4. linear expansion bar according to claim 1, which is characterized in that two spherical plain bearing rod ends being connect with the same end
Rod end be parallel to each other, and the equal length of rod end.
5. linear expansion bar according to claim 2 or 3, which is characterized in that the second end of the first connecting rod and/or institute
The end face for stating the second end of second connecting rod is provided with first groove in the direction for concaving towards the first end, the link block with it is described
Protrusion is provided on first connecting rod or the opposite surface of the second connecting rod, the protrusion connects with first groove interference fit
It connects,
Alternatively, the link block surface opposite with the first connecting rod or the second connecting rod is provided with the second groove, it is described
First connecting rod or the second connecting rod and second groove interference fit connect.
6. linear expansion bar according to claim 2 or 3, which is characterized in that the first connecting rod and/or second company
Bar is integrally formed with corresponding link block.
7. linear expansion bar according to claim 1, which is characterized in that two spherical plain bearing rod ends being connect with the same end
Flexural pivot axis be parallel to each other, and it is vertical with the upper surface of the first connecting rod or the second connecting rod, alternatively, connecting with the same end
The flexural pivot axis of two spherical plain bearing rod ends connect on the same line, and with the axis of first connecting rod or second connecting rod same
In plane.
8. linear expansion bar according to claim 1, which is characterized in that two connect with the second end of the first connecting rod
The centre of sphere of the centre of sphere line of a spherical plain bearing rod end and two spherical plain bearing rod ends being connect with the second end of the second connecting rod
Line is parallel.
9. linear expansion bar according to claim 1, which is characterized in that the first end of the first connecting rod is provided with sliding
Splined shaft, the first end of the second connecting rod are provided with free-sliding spline axle sleeve, the free-sliding spline axis and the free-sliding spline axis
Set is cooperatively connected.
10. linear expansion bar according to claim 9, which is characterized in that the outer surface of the free-sliding spline axis and described
The inner surface of free-sliding spline axle sleeve is coated with polymeric coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820405591.4U CN208232727U (en) | 2018-03-22 | 2018-03-22 | A kind of linear expansion bar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820405591.4U CN208232727U (en) | 2018-03-22 | 2018-03-22 | A kind of linear expansion bar |
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| Publication Number | Publication Date |
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| CN208232727U true CN208232727U (en) | 2018-12-14 |
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| CN201820405591.4U Expired - Fee Related CN208232727U (en) | 2018-03-22 | 2018-03-22 | A kind of linear expansion bar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108382143A (en) * | 2018-03-22 | 2018-08-10 | 清华大学 | A kind of Linear scaling bar |
-
2018
- 2018-03-22 CN CN201820405591.4U patent/CN208232727U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108382143A (en) * | 2018-03-22 | 2018-08-10 | 清华大学 | A kind of Linear scaling bar |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |