CN101866104B - Projection screen mechanism - Google Patents
Projection screen mechanism Download PDFInfo
- Publication number
- CN101866104B CN101866104B CN 200910131305 CN200910131305A CN101866104B CN 101866104 B CN101866104 B CN 101866104B CN 200910131305 CN200910131305 CN 200910131305 CN 200910131305 A CN200910131305 A CN 200910131305A CN 101866104 B CN101866104 B CN 101866104B
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- CN
- China
- Prior art keywords
- projection screen
- base
- fastener
- rotation axis
- torsion spring
- 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
A projection screen mechanism comprises a base, a rod piece, a supporting device, a buckling device, a furling device and a projection screen. The supporting device comprises two slide rails arranged at the base, two slide blocks respectively arranged at the slide rails in a slide manner and two supporting rods. The first end and the second end of each supporting rod are respectively connected with one of the slide blocks and the rod piece through a pin. The buckling device comprises at least one fastener and at least one elastic piece. The first end of the fastener is connected with one of the slide blocks through the pin. The elastic piece is connected with the corresponding the slide block and the fastener. The furling device is arranged at the base. The two corresponding sides of the projection screen are respectively connected with the furling device and the rod piece. When the rod piece is away from the base and the elastic piece is deformed so that the second end of the fastener fastens one of the supporting rods. The supporting rod supports the rod piece to spread the projection screen and the furling mechanism exerts furling torque force on the projection screen.
Description
Technical field
The invention relates to a kind of projection screen mechanism, and particularly relevant for a kind of Portable projection screen mechanism (portable projection screen mechanism).
Background technology
Please refer to Fig. 1, it illustrates the schematic perspective view of traditional a kind of Portable projection screen mechanism.Traditional Portable projection screen mechanism 100 comprises a base (base) 110, a cross bar (transverse rod) 120, one support bar (support rod) 130, one automatic retracting device (automatic rolling device) (not shown) and a projection screen (projection screen) 140.
Automatically retracting device is disposed in the base 110.One side of projection screen 140 is connected to automatic retracting device, and the opposite side of projection screen 140 is connected to cross bar 120.When Portable projection screen mechanism 100 was in user mode, an end of support bar 130 inserted base 110, and the other end of support bar 130 is fixed in cross bar 120, made support bar 130 support rails 120.At this moment, projection screen 140 is drawn out, and automatically furling mechanism applies one and furls torsion in projection screen 140.When Portable projection screen mechanism 100 was in unused state, support bar 130 was separated base 110 and cross bar 120, and the torsion that automatic furling mechanism is applied is wound in projection screen 140 in the base 110.
Yet support bar 130 is dismountable member, just can use Portable projection screen mechanism 100 at any time so the user must carry support bar 130 with base 110.Therefore, as far as the user, the Portability of Portable projection screen mechanism 100 is inconvenient.In addition, Portable projection screen mechanism 100 only has a support bar 130 supporting in use, so projection screen 140 can and then influence the effect of projection than out-of-flatness.
Summary of the invention
The present invention provides a kind of projection screen mechanism, and it makes things convenient for the user to carry.
Other purposes of the present invention and advantage can further be understood from the disclosed technical characterictic of the present invention.
For reaching above-mentioned one or part or all of purpose or other purposes; One embodiment of the invention proposes a kind of projection screen mechanism, comprises a base, a rod member (rod), a bracing or strutting arrangement (support device), a bayonet unit (latch device), a retracting device and a projection screen.Bracing or strutting arrangement comprises two slide rails (slideway), two slide blocks (sliding block) and two support bars.These slide rails are disposed on the base.These slide blocks are slidedly arranged on these slide rails respectively.One first end of each support bar is articulated in one of these slide blocks, and one second end of relative its first end of each support bar is articulated in rod member.Bayonet unit comprises at least one fastener (latch element) and at least one elastic component.One first end of fastener is articulated in one of these slide blocks.Elastic component connects corresponding slide block and fastener.Retracting device is disposed at base.One side of projection screen is connected to automatic retracting device, and the opposite side of projection screen is connected to rod member.
When projection screen is furled and during around retracting device, rod member and these support bar proximate base.When rod member away from base, and the elastic component elastic deformation is when making one of one second these support bars of end buckle of relative its first end of fastener, these they sup-port rod members, launching projection screen, and furling mechanism applies one and furls torsion in projection screen.
Because the projection screen mechanism of present embodiment has these support bars that are slidedly arranged on base, so compare with conventional art, the Portability of the projection screen mechanism of present embodiment is comparatively convenient.In addition, the projection screen mechanism of present embodiment in use because these they sup-port rod members, so compare with conventional art, projection screen can more smoothly make that the effect of projection is preferable.
For let the above-mentioned of embodiments of the invention and other purposes, feature and advantage can be more obviously understandable, hereinafter is special lifts embodiment, and conjunction with figs., elaborates as follows.
Description of drawings
Fig. 1 illustrates the schematic perspective view of traditional a kind of Portable projection screen mechanism.
Fig. 2 illustrates the schematic perspective view of a kind of projection screen mechanism of one embodiment of the invention.
Fig. 3 illustrates the decomposing schematic representation of partial component of the projection screen structure of Fig. 2.
Fig. 4 illustrates the part decomposing schematic representation of the retracting device of Fig. 2.
The projection screen mechanism that Fig. 5 A illustrates Fig. 2 is in the synoptic diagram of unused state.
Fig. 5 B illustrates the synoptic diagram of partial component of the projection screen structure of Fig. 5 A.
The projection screen mechanism that Fig. 6 A illustrates Fig. 2 is in the synoptic diagram of user mode.
Fig. 6 B illustrates the synoptic diagram of partial component of the projection screen structure of Fig. 6 A.
The main element symbol description
100,200: projection screen mechanism
110,210: base
120,220: rod member
130,236: support bar
140,260: projection screen
212: pedestal
214: end cap
222: the body of rod
224: the web member of rod member
230: bracing or strutting arrangement
232: slide rail
234: slide block
236a: first end of support bar
236b: second end of support bar
236c: hole clipping
240: bayonet unit
242: fastener
242a: first end of fastener
242b: second end of fastener
244: elastic component
250: retracting device
251: rotation axis
252: torsion spring
252a: first end of torsion spring
252b: second end of torsion spring
253: the web member of retracting device
254: runner
255: rotate pipe fitting
A: axis
S: accommodation space
T: furl torsion
Embodiment
About aforementioned and other technology contents, characteristics and effect of the present invention, in the detailed description of following cooperation, can clearly appear with reference to the embodiment of accompanying drawing.The direction term of being mentioned in following examples, for example: upper and lower, left and right, front or rear etc. only are the directions with reference to accompanying drawing.Therefore, the direction term of use is to be used for explaining not to be to be used for limiting the present invention.
Fig. 2 illustrates the schematic perspective view of a kind of projection screen mechanism of one embodiment of the invention.Fig. 3 illustrates the decomposing schematic representation of partial component of the projection screen structure of Fig. 2.Fig. 4 illustrates the part decomposing schematic representation of the retracting device of Fig. 2.In this mandatory declaration is that for the purpose of the explanation, the projection screen of Fig. 2 (see after and state) is shown in broken lines for ease.Please refer to Fig. 2, Fig. 3 and Fig. 4, the projection screen mechanism 200 of present embodiment comprises a base 210, a rod member 220, a bracing or strutting arrangement 230, a bayonet unit 240, a retracting device 250 and a projection screen 260.The base 210 of present embodiment comprises a pedestal (base body) 212 and two end cap (end cover) 214.These end caps 214 are disposed at the opposite end of pedestal 212 respectively, and form accommodation space S jointly with pedestal 212.
Bracing or strutting arrangement 230 comprises two slide rails 232, two slide blocks 234 and two support bars 236.These slide rails 232 are disposed on the pedestal 212 of base 210 and are positioned at accommodation space S.These slide blocks 234 are slidedly arranged on these slide rails 232 respectively.One first end 236a of each support bar 236 is articulated in one of them of these slide blocks 234, and the one second end 236b of the relative first end 236a of each support bar 236 is articulated in rod member 220.
Say that at length the rod member 220 of present embodiment comprises a body of rod (rod body) 222 and two web members (connection element) 224.One end of each web member 224 is fixed in the body of rod 222, and one of them the second end 236b of the other end of each web member 224 and these support bars 236 is articulated.In the present embodiment, these web members 224 are respectively adjacent to the opposite end of the body of rod 222.
Retracting device 250 is disposed on the pedestal 212 of base 210 and is positioned partially in the accommodation space S.The retracting device 250 of present embodiment comprises that a rotation axis 251, a torsion spring 252, a connection piece 253, a runner 254 and rotate pipe fitting 255.Rotation axis 251 is disposed at base 210 and is suitable for an axis A serves as that axle rotates.Web member 253 is sheathed on an end of rotation axis 251 and is fixed in one of them of these end caps 214 of base 210.Say that at length rotation axis 251 is connected to web member 253 rotationally, that is rotation axis 251 can rotate with respect to web member 253.In addition, runner 254 is sheathed on and is fixed in the other end of rotation axis 251, and runner 254 be disposed at rotationally these end caps 214 wherein another.
One side of projection screen 260 is connected to the rotation pipe fitting 255 of retracting device 250 and then is connected to rotation axis 251, and the opposite side of projection screen 260 is connected to rod member 220.
Below explain for the start process of Portable projection screen mechanism 200.The projection screen mechanism that Fig. 5 A illustrates Fig. 2 is in the synoptic diagram of unused state.Fig. 5 B illustrates the synoptic diagram of partial component of the projection screen structure of Fig. 5 A.The projection screen mechanism that Fig. 6 A illustrates Fig. 2 is in the synoptic diagram of user mode.Fig. 6 B illustrates the synoptic diagram of partial component of the projection screen structure of Fig. 6 A.In this mandatory declaration is that for the purpose of the explanation, the projection screen 260 of Fig. 5 A and Fig. 6 A is shown in broken lines for ease, and Fig. 5 A and Fig. 6 A omission illustrates member partly.Please refer to Fig. 4, Fig. 5 A and Fig. 5 B, when projection screen 260 is furled and during around the rotation pipe fitting 255 of retracting device 250 and then around rotation axis 251, rod member 220 and these support bar 236 proximate base 210.At this moment, these bayonet units 240 are respectively adjacent to these end cap 214 (see figure 2)s of base 210, and each fastener 242 receives the effect of the preparatory power of corresponding elastic component 244 to make the second end 242b of each fastener 242 contact corresponding support bar 236.
Please refer to Fig. 4, Fig. 6 A and Fig. 6 B; When rod member 220 away from base 210; And during a hole clipping 236c of the support bar 236 that the second end 242b buckle of the fastener 242 of the feasible correspondence of each elastic component 244 elastic deformations is corresponding (also visible Fig. 3 and Fig. 5 A); These support bar 236 supporting rods 220, launching projection screen 260, and torsion spring 252 elastic deformations of furling mechanism 250 and apply and furl torsion T in projection screen 260.In this mandatory declaration is that in the process that projection screen 260 is unfolded, projection screen 260 drives rotation pipe fitting 255 and rotates, and makes that runner 254 and rotation axis 251 rotate with respect to web member 253 and torsion spring 252 (see figure 4)s produce above-mentioned elastic deformation phenomenon.
Because the projection screen mechanism 200 of present embodiment has these support bars 236 that are slidedly arranged on base 210, so compare with conventional art, the Portability of the projection screen mechanism 200 of present embodiment is comparatively convenient.In addition, the projection screen mechanism 200 of present embodiment in use because these support bar 236 supporting rods 220, so compare with conventional art, projection screen 260 can more smoothly make that the effect of projection is preferable.
In sum, the projection screen mechanism of embodiments of the invention has following one of them or other advantages at least:
One, because the projection screen mechanism of embodiments of the invention has these support bars that are slidedly arranged on base, so compare with conventional art, the Portability of the projection screen mechanism of embodiments of the invention is comparatively convenient.
Two, the projection screen mechanism of embodiments of the invention in use because these they sup-port rod members, so compare with conventional art, projection screen can more smoothly make that the effect of projection is preferable.
Though the present invention with embodiment openly as above; Right its is not that any those skilled in the art are not breaking away from the spirit and scope of the present invention in order to qualification the present invention; When can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking claims person of defining.Arbitrary embodiment of the present invention in addition or claim must not reached the disclosed whole purposes of the present invention or advantage or characteristics.In addition, summary part and title only are the usefulness that is used for assisting the patent document search, are not to be used for limiting interest field of the present invention.
Claims (5)
1. projection screen mechanism comprises:
One base;
One rod member;
One bracing or strutting arrangement;
One bayonet unit;
One retracting device is disposed at this base; And
One projection screen,
It is characterized in that,
This bracing or strutting arrangement comprises:
Two slide rails are disposed on this base;
Two slide blocks are slidedly arranged on those slide rails respectively; And
Two support bars, wherein respectively this support bar has one first end and second end with respect to this first end of this support bar respectively, and respectively this first end of this support bar is articulated in one of those slide blocks, and respectively this second end of this support bar is articulated in this rod member;
This bayonet unit comprises:
At least one fastener has one first end and second end with respect to this first end of this fastener, and wherein this first end of this fastener is articulated in one of those slide blocks; And
At least one elastic component connects corresponding this slide block and this fastener;
Wherein a side of this projection screen is connected to this retracting device, and the opposite side of this projection screen is connected to this rod member;
When this projection screen is furled and during around this retracting device, contiguous this base of this rod member and those support bars;
When this rod member away from this base, and this elastic component elastic deformation is when making one of these those support bars of second end buckle of this fastener, this rod member of those they sup-port, launching this projection screen, and this furling mechanism applies one and furls torsion in this projection screen.
2. projection screen mechanism according to claim 1, wherein this elastic component is a compression shell fragment.
3. projection screen mechanism according to claim 1, wherein this retracting device comprises:
One rotation axis, being disposed at this base and being suitable for an axis serves as that axle rotates; And
One torsion spring is sheathed on this rotation axis, and this torsion spring has one first end and second end with respect to this first end of this torsion spring, and wherein this first end of this torsion spring is fixed in this rotation axis, and this second end of this torsion spring is fixed in this base;
When this projection screen was furled, this projection screen was around this rotation axis;
When this projection screen is unfolded, this torsion spring elastic deformation and apply this and furl torsion in this projection screen.
4. projection screen mechanism according to claim 3, wherein this retracting device also comprises:
A connection piece is fixed in this base, and wherein an end of this rotation axis is connected to this web member rotationally, and this second end of this torsion spring is fixed in this web member;
One runner is sheathed on this rotation axis and is fixed in the other end of this rotation axis; And
One rotates pipe fitting, is sheathed on this rotation axis and this torsion spring and is fixed in this runner, and wherein this side of this projection screen is connected to this rotation pipe fitting, and when this projection screen rolling time receiving, this projection screen rotates pipe fitting around this.
5. projection screen mechanism according to claim 1; Wherein the quantity of this at least one fastener is two; The quantity of this at least one elastic component is two, and those of those fasteners first end is articulated in those slide blocks respectively, and respectively this elastic component connects corresponding this slide block and this corresponding fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910131305 CN101866104B (en) | 2009-04-14 | 2009-04-14 | Projection screen mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910131305 CN101866104B (en) | 2009-04-14 | 2009-04-14 | Projection screen mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101866104A CN101866104A (en) | 2010-10-20 |
| CN101866104B true CN101866104B (en) | 2012-05-02 |
Family
ID=42957883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910131305 Expired - Fee Related CN101866104B (en) | 2009-04-14 | 2009-04-14 | Projection screen mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101866104B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107180562A (en) * | 2017-06-07 | 2017-09-19 | 林艺芃 | Projection teaching's device is used in high school student's study |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372921A (en) * | 2015-12-15 | 2016-03-02 | 重庆触视科技有限公司 | Portable projection screen |
| CN109058725B (en) * | 2018-09-14 | 2021-07-09 | 武汉天马微电子有限公司 | Supporting assembly and display device |
-
2009
- 2009-04-14 CN CN 200910131305 patent/CN101866104B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107180562A (en) * | 2017-06-07 | 2017-09-19 | 林艺芃 | Projection teaching's device is used in high school student's study |
| CN107180562B (en) * | 2017-06-07 | 2019-02-12 | 林艺芃 | High school student's study projection teaching's device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101866104A (en) | 2010-10-20 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120502 Termination date: 20140414 |