CN202351559U - False assembly prevention mechanism for liquid crystal screen - Google Patents
False assembly prevention mechanism for liquid crystal screen Download PDFInfo
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- CN202351559U CN202351559U CN2011204300469U CN201120430046U CN202351559U CN 202351559 U CN202351559 U CN 202351559U CN 2011204300469 U CN2011204300469 U CN 2011204300469U CN 201120430046 U CN201120430046 U CN 201120430046U CN 202351559 U CN202351559 U CN 202351559U
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Abstract
The utility model discloses a false assembly prevention mechanism for a liquid crystal screen. The liquid crystal screen comprises an optical filter, a light guide plate, a reflector and a screen housing. The false assembly prevention mechanism is provided with a detection bracket and three detection rods which respectively are of the first detection rod, the second detection rod and the third detection rod, wherein the three detection rods are respectively inserted into guide holes of the detection bracket; three microswitches are arranged at the corresponding positions of the end parts of the three detection rods; the three microswitches are respectively arranged on three sliding blocks; and three regulating screws are locked and connected on the detection bracket by locking nuts and are respectively screwed into the sliding blocks by the guide holes of the detection bracket. Due to the adoption of the technical scheme, the missed assembly of any one of the reflector, the light guide plate and the optical filter can be detected only by the three detection rods; whether the assembling sequence of the light guide plate and the optical filter is wrong can also be detected; compared with a displacement sensor, the adopted microswitch detection structure has small volume, is convenient to install and replace and has low cost; and the false assembly prevention mechanism has simple structure and is convenient to regulate.
Description
Technical field
The utility model belongs to the technical field of auto parts and components manufacturing process, relates to automobile instrument and assembles checkout equipment with liquid crystal display, and more particularly, the utility model relates to a kind of mistake proofing assemble mechanism of liquid crystal display.In addition, the utility model also relates to the detection method of this mistake proofing assemble mechanism.
Background technology
In numerous parts of automobile instrument, liquid crystal display has become requisite display unit.The liquid crystal display parts mainly are made up of shell, liquid crystal display, optical filter, light guide sheet and reflecting piece.All the other are working of plastics except that liquid crystal display is glassware in these parts.The factor that influences the liquid crystal display part quality is except the quality of liquid crystal display part itself, and the assembly quality of its parts is vital.
The assembling of liquid crystal display parts is that layering is carried out by hand.After shell is by the anchor clamps pneumatic pinch, by manual successively in the enclosure reflecting piece, light guide sheet, optical filter, the liquid crystal display installed of regulation.Can not neglected loading opposite with assembly sequency, otherwise can influence product quality.Because the parts of installation are difficult to find that neglected loading is opposite with assembly sequency, come to light when automobile instrument is done whole seizure test again and pack at it, will cause damage.So the detection in the assembling process is absolutely necessary.
Because liquid crystal display progressively becomes the critical component that can automobile normally use, its parts assembling has following characteristics and requirement:
1, reflecting piece, light guide sheet, optical filter, liquid crystal display must be the shells of packing into successively, must the orientation angle of these parts be inserted the corresponding locating notch of shell during installation and reach fixing purpose;
2, reflecting piece is installed in outer casing bottom through an orientation angle.Light guide sheet and optical filter are installed above certain interval, and light guide sheet and optical filter all have the orientation angle of two same widths, two locating notches of their overlapping successively insertion shells.Because it is locating notch is identical, easily that the order dress of light guide sheet and optical filter is anti-.
3, each tool function of reflecting piece, light guide sheet and optical filter can not neglected loading.If the order of light guide sheet and optical filter dress instead can influence display effect.
Neglected loading of Assembling Production link and the anti-dress of order at liquid crystal display are referred to as misloading.The mistake proofing way is to increase inspection process.Present check way mainly contains following two clocks:
1, artificial visually examine's check: the reviewer observes the locating notch that the liquid crystal display parts back side is accomplished in assembling.If do not have reflecting piece, light guide sheet or optical filter orientation angle to stretch out then be neglected loading; If light guide sheet and optical filter orientation angle are stretched out in proper order instead then are that order is anti-.But, because reflecting piece, light guide sheet and optical filter are transparent or semitransparent material, and material thickness little (the thick 0.5mm of optical filtering agreement that contracts a film or TV play to an actor or actress, the thick 1.2mm of leaded light agreement that contracts a film or TV play to an actor or actress, the thick 3mm of leaded light agreement that contracts a film or TV play to an actor or actress), thus the eye-observation fatiguability with make mistakes.
2, adopt displacement transducer to detect: the external part that pneumatic mechanism drives reflecting piece, light guide sheet and optical filter outside the displacement transducer detection and location notch is installed on assembling jig.Judge whether relatively that through displacement setting value and detected value neglected loading and order are anti-.The shortcoming one of this method is that cost is high---the displacement transducer expensive; Shortcoming two is that three locating notch distances of liquid crystal display are near, and it almost is impossible placing three displacement transducers, and detection can only be arranged in two stations to be carried out, and has reduced efficient, has increased production cost.
The utility model content
The utility model provides a kind of mistake proofing assemble mechanism of liquid crystal display, its objective is the quality of production and the efficient that improve the liquid crystal display product.
To achieve these goals, the technical scheme taked of the utility model is:
The mistake proofing assemble mechanism of the liquid crystal display that the utility model provided, described liquid crystal display comprise optical filter, light guide sheet, reflecting piece and screen shell, and described mistake proofing assemble mechanism is provided with the detection support; Described mistake proofing assemble mechanism also is provided with three test rods; Be respectively test rod one, test rod two, test rod three, insert in the pilot hole that detects support correspondence position respectively in described three test rod ends; Three microswitches are set; Be contained in respectively on three sliding shoes, three adjusting screw(rod)s be locked at through set nut detect in the support connection, the pilot hole through described detection support screws in sliding shoe respectively.
Described mistake proofing assemble mechanism is established double rod cylinder, and its stiff end is connected with anchor clamps, and its mobile terminal is connected with the detection support.
The position branch of described test rod one, test rod two, test rod three is clipped to corresponding with the position of three locating notches, and the position of described three locating notches is respectively the position of described optical filter, light guide sheet, reflecting piece.
The utility model also provides the mistake proofing detection method of the mistake proofing assemble mechanism of above-described liquid crystal display, and its goal of the invention is identical with above technical scheme.Described mistake proofing detection method is:
After the screen shell of liquid crystal display is by anchor clamps pneumatic pinch and all parts of manual setting, press facility switching, control system starts liquid crystal display mistake proofing assemble mechanism and carries out mistake proofing and detect:
At first, double rod cylinder drives whole testing agency to the motion of the direction of described screen shell, and described test rod one, test rod two, test rod three arrive three locating notch positions respectively;
Transposition on the throne is integrated under the prerequisite of fitting, and whether test rod one, test rod two, test rod three are measured respectively has neglected loading and optical filter in optical filter, light guide sheet, three kinds of parts of reflecting piece, whether assembly sequency is opposite for two kinds of parts of light guide sheet.
Test rod two is used for detecting optical filter, whether two kinds of parts of light guide sheet have neglected loading.The method of adjustment of described test rod two is:
In anchor clamps, put into and confirm qualified liquid crystal display parts and clamping, at first the rotation adjusting screw rod transfers to minimum point with sliding shoe;
Detection starting system then, double rod cylinder drives the upwards action of whole testing agency, and test rod two arrives near the locating notch positions;
Whether slowly the reverse rotation adjusting screw(rod) moves up sliding shoe drive microswitch and test rod two, use multimeter to keep watch on microswitch simultaneously and close;
When microswitch one cuts out, the adjusting screw(rod) that stops the rotation at once, test rod two contact with light guide sheet and also just in time closed microswitch this moment;
Then,, estimate little joint screw rod that tunes, the distance of moving about half optical filter thickness on the test rod two is stopped again according to the pitch of adjusting screw(rod);
At last, and the set nut on the tight adjusting screw(rod) and sliding shoe is fixed on screw detects on the support, and adjustment finishes.
Whether test rod three is used to detect the reflecting piece part has neglected loading.The method of adjustment of described test rod three is:
In anchor clamps, put into and confirm qualified liquid crystal display parts and clamping, at first the rotation adjusting screw rod transfers to minimum point with sliding shoe.
Detection starting system then, double rod cylinder drives the upwards action of whole testing agency, and test rod three arrives near the locating notch positions;
Whether slowly the reverse rotation adjusting screw(rod) upwards moves sliding shoe drive microswitch and test rod three, use multimeter to keep watch on microswitch simultaneously and close;
When microswitch one cuts out, the adjusting screw(rod) that stops the rotation at once, test rod three contact with reflecting piece and also just in time closed microswitch this moment;
Then, revolve according to the pitch of adjusting screw(rod) is little again, the distance of moving about half reflecting piece thickness on the test rod three is stopped;
At last, and the set nut on the tight adjusting screw(rod) and sliding shoe is fixed on screw detects on the support, and adjustment finishes.
Test rod one is used for detecting optical filter, whether the order dress is anti-for two kinds of parts of light guide sheet, and it cooperates detection with test rod two.The method of adjustment of described test rod one is:
In anchor clamps, put into and confirm qualified liquid crystal display parts and clamping, at first the rotation adjusting screw rod transfers to minimum point with sliding shoe;
Detection starting system then, double rod cylinder drives the upwards action of whole testing agency, and test rod one arrives near the locating notch position.
Whether slowly the reverse rotation adjusting screw(rod) moves up sliding shoe drive microswitch and test rod one, use multimeter to keep watch on microswitch simultaneously and close;
When microswitch one cuts out, the adjusting screw(rod) that stops the rotation at once, test rod one contact with optical filter and also just in time closed microswitch this moment;
Then, revolve according to the pitch of adjusting screw(rod) is little, the distance that makes test rod one move down about half light guide sheet thickness stops again;
At this moment, microswitch is in open mode;
At last, and the set nut on the tight adjusting screw(rod) and sliding shoe is fixed on screw detects on the support, and adjustment finishes.
The utility model adopts technique scheme, has following characteristics:
1, only cooperate three adjustable microswitches of distance just can measure any neglected loading in reflecting piece, light guide sheet, three kinds of parts of optical filter with three test rods; While can be measured light guide sheet, whether assembly sequency is anti-for two kinds of parts of optical filter;
2, specific volume is little mutually, installing and replacing convenient, cost is low with displacement transducer for the microswitch detection architecture that adopts;
3, simple in structure, easy to adjust.Distance adjustment structure has adopted the simplest fine thread adjustment mode, and is simple and reliable.
Description of drawings
The mark of facing down among expressed content of each width of cloth accompanying drawing of this instructions and the figure is made brief description:
Fig. 1 is the structure cross-sectional schematic of the utility model;
Fig. 2 looks synoptic diagram for the left side of structure shown in Figure 1;
Fig. 3 is the structural representation of the amplification at A place among Fig. 1.
Be labeled as among the figure:
1, screen shell, 2, liquid crystal display, 3, optical filter, 4, light guide sheet, 5, reflecting piece; 6, test rod one, 7, test rod two, 8, test rod three, 9, microswitch, 10, sliding shoe; 11, adjusting screw(rod), 12, set nut, 13, detect support, 14, double rod cylinder, 15, locating notch.
Embodiment
Contrast accompanying drawing below,, the embodiment of the utility model is done further detailed explanation, inventive concept, the technical scheme of the utility model are had more complete, accurate and deep understanding to help those skilled in the art through description to embodiment.
Like the structure of the expressed the utility model of Fig. 1, Fig. 2 and Fig. 3, be a kind of mistake proofing assemble mechanism of liquid crystal display, described liquid crystal display 2 comprises optical filter 3, light guide sheet 4, reflecting piece 5 and screen shell 1, described mistake proofing assemble mechanism is provided with and detects support 13.
In order to solve the problem that exists at the described present known technology of this instructions background technology part and to overcome its defective, realize improving the quality of production of liquid crystal display product and the goal of the invention of efficient, the technical scheme that the utility model is taked is:
Extremely shown in Figure 3 like Fig. 1; The mistake proofing assemble mechanism of the liquid crystal display that the utility model provided also is provided with three test rods; Be respectively test rod 1, test rod 27, test rod 38, insert in the pilot hole that detects support 13 correspondence position respectively in described three test rod ends; Three microswitches 9 are set; Be contained in respectively on three sliding shoes 10, three adjusting screw(rod)s 11 be locked at through set nut 12 detect in support 13 connections, the pilot hole through described detection support 13 screws in sliding shoe 10 respectively.
Described mistake proofing assemble mechanism is established double rod cylinder 14, and its stiff end is connected with anchor clamps, and its mobile terminal is connected with detection support 13.
The position branch of described test rod 1, test rod 27, test rod 38 is clipped to corresponding with the position of three locating notches 15, and the position of described three locating notches 15 is respectively the position of described optical filter 3, light guide sheet 4, reflecting piece 5.
In sum, the utility model provides the liquid crystal display mistake proofing assembling testing agency that a kind of accuracy of detection is high, use is easy to adjust, cost is low, with the quality of production that improves the liquid crystal display product greatly and efficient.The utility model adopts technique scheme, has following characteristics: 1, only cooperate three adjustable microswitches of distance just can measure any neglected loading in reflecting piece, light guide sheet, three kinds of parts of optical filter with three test rods; While can be measured light guide sheet, whether assembly sequency is anti-for two kinds of parts of optical filter; 2, specific volume is little mutually, installing and replacing convenient, cost is low with displacement transducer for the microswitch detection architecture that adopts; 3, simple in structure, easy to adjust.Distance adjustment structure has adopted the simplest fine thread adjustment mode, and is simple and reliable.
The utility model also provides the mistake proofing detection method of the mistake proofing assemble mechanism of above-described liquid crystal display, and its goal of the invention is identical with above technical scheme.
Described mistake proofing detection method is:
After the screen shell 1 of liquid crystal display 2 is by anchor clamps pneumatic pinch and all parts of manual setting, press facility switching, control system starts liquid crystal display mistake proofing assemble mechanism and carries out mistake proofing and detect:
At first, double rod cylinder 14 drives the direction motion of whole testing agency to described screen shell 1, and described test rod 1, test rod 27, test rod 38 arrive three locating notch 15 positions respectively;
Transposition on the throne is integrated under the prerequisite of fitting, and whether test rod 1, test rod 27, test rod 38 are measured respectively has neglected loading and optical filter 3 in optical filter 3, light guide sheet 4,5 three kinds of parts of reflecting piece, whether assembly sequency is opposite for 4 two kinds of parts of light guide sheet.
Below be the method for adjustment and detection principle of each test rod displacement:
One, the method for adjustment of test rod two:
Test rod 27 is used for detecting optical filter 3, whether 4 two kinds of parts of light guide sheet have neglected loading.The method of adjustment of described test rod 27 is:
In anchor clamps, put into and confirm qualified liquid crystal display parts and clamping, at first the rotation adjusting screw rod 11, and sliding shoe 10 is transferred to minimum point;
Detection starting system then, double rod cylinder 14 drives the upwards action of whole testing agency, and test rod 27 arrives near locating notches 15 positions;
Whether slowly the reverse rotation adjusting screw(rod) 11, make sliding shoe 10 drive microswitch 9 and move up with test rod 27, use multimeter to keep watch on microswitch 9 simultaneously and close;
Close when microswitch 9 one, the adjusting screw(rod) 11 that stops the rotation at once, test rod 27 contacted and just in time closed microswitch 9 with light guide sheet 4 this moment;
Then,, estimate little joint screw rod 11 that tunes, the distance of moving about half optical filter, 3 thickness (about 0.25mm) on the test rod 27 is stopped again according to the pitch of adjusting screw(rod) 11;
At last, and the set nut 12 on the tight adjusting screw(rod) 11 and sliding shoe 10 is fixed on screw detects on the support 13, and adjustment finishes.
The detection principle of above-mentioned method of adjustment:
Because test rod 27 pairing positions are lap positions of optical filter 3 and light guide sheet 4; When test rod 27 arrives and close microswitch 9; When having increased the stroke of half optical filter 3 thickness again; Guaranteed just can close microswitch 9 and provide qualified signal as long as optical filter 3 has been installed with light guide sheet 4 really.If neglected loading any a slice part, even microswitch 9 but can not be closed in test rod 27 in-positions.
Two, the method for adjustment of test rod three:
Whether test rod 38 is used to detect reflecting piece 5 parts has neglected loading.The method of adjustment of described test rod 38 is:
In anchor clamps, put into and confirm qualified liquid crystal display parts and clamping, at first the rotation adjusting screw rod 11, and sliding shoe 10 is transferred to minimum point.
Detection starting system then, double rod cylinder 14 drives the upwards action of whole testing agency, and test rod 38 arrives near locating notches 15 positions;
Whether slowly the reverse rotation adjusting screw(rod) 11, make sliding shoe 10 drive microswitch 9 and move up with test rod 38, use multimeter to keep watch on microswitch 9 simultaneously and close;
Close when microswitch 9 one, the adjusting screw(rod) 11 that stops the rotation at once, test rod 38 contacted and just in time closed microswitch 9 with reflecting piece 5 this moment;
Then, revolve according to the pitch of adjusting screw(rod) 11 is little again, the distance of moving the about 1.5mm of about half reflecting piece, 5 thickness on the test rod 38 is stopped;
At last, and the set nut 12 on the tight adjusting screw(rod) 11 and sliding shoe 10 is fixed on screw detects on the support 13, and adjustment finishes.
The detection principle of above-mentioned method of adjustment:
Because test rod 38 pairing positions are reflecting piece 5 orientation angle extended positions; When test rod 38 arrives and close microswitch 9; When having increased the stroke of half reflecting piece 5 thickness again, guaranteed just can close microswitch 9 and provide qualified signal as long as reflecting piece 5 has been installed really.If neglected loading is even microswitch 9 but can not be closed in test rod 27 in-positions.
Three, the method for adjustment of test rod one:
Test rod 1 is used for detecting optical filter 3, whether the order dress is anti-for 4 two kinds of parts of light guide sheet, and it cooperates detection with test rod 27.The method of adjustment of described test rod 1 is:
In anchor clamps, put into and confirm qualified liquid crystal display parts and clamping, at first the rotation adjusting screw rod 11, and sliding shoe 10 is transferred to minimum point;
Detection starting system then, double rod cylinder 14 drives the upwards action of whole testing agency, and test rod 1 arrives near locating notches 15 positions.
Whether slowly the reverse rotation adjusting screw(rod) 11, make sliding shoe 10 drive microswitch 9 and move up with test rod 1, use multimeter to keep watch on microswitch 9 simultaneously and close;
Close when microswitch 9 one, the adjusting screw(rod) 11 that stops the rotation at once, test rod 1 contacted and just in time closed microswitch 9 with optical filter 3 this moment;
Then, revolve according to the pitch of adjusting screw(rod) 11 is little, the distance that makes test rod 1 move down about half light guide sheet, 4 thickness (about 0.6mm) stops again;
At this moment, microswitch 9 is in open mode;
At last, and the set nut 12 on the tight adjusting screw(rod) 11 and sliding shoe 10 is fixed on screw detects on the support 13, and adjustment finishes.
The detection principle of above-mentioned method of adjustment:
Because test rod one 6 pairing positions are optical filter 3 extended positions, after test rod 1 arrives and closes microswitch 9, during the stroke of half light guide sheet 4 thickness of having withdrawn again, guaranteed that microswitch 9 is in open mode.This state will provide as qualified signal.If 4 two kinds of part order dresses of optical filter 3, light guide sheet are anti-, then optical filter 3 is overlapped under 4 of the light guide sheet, and the external part of optical filter 3 is longer than the external part of light guide sheet 4, will close microswitch 9 like this and provide the anti-defective signal of order.
Combine accompanying drawing that the utility model has been carried out exemplary description above; Obviously the concrete realization of the utility model does not receive the restriction of aforesaid way; As long as adopted the method design of the utility model and the improvement of the various unsubstantialities that technical scheme is carried out; Or the design of the utility model and technical scheme are directly applied to other occasion without improving, all within the protection domain of the utility model.
Claims (3)
1. the mistake proofing assemble mechanism of a liquid crystal display; Described liquid crystal display (2) comprises optical filter (3), light guide sheet (4), reflecting piece (5) and screen shell (1); Described mistake proofing assemble mechanism is provided with and detects support (13), and it is characterized in that: described mistake proofing assemble mechanism also is provided with three test rods, is respectively test rod one (6), test rod two (7), test rod three (8); Insert in the pilot hole that detects support (13) respectively; Correspondence position in described three test rod ends is provided with three microswitches (9), is contained in respectively on three sliding shoes (10); Three adjusting screw(rod)s (11) are locked in the connection of detection support (13) through set nut (12), and the pilot hole through described detection support (13) screws in sliding shoe (10) respectively.
2. according to the mistake proofing assemble mechanism of the described liquid crystal display of claim 1, it is characterized in that: described mistake proofing assemble mechanism is established double rod cylinder (14), and its stiff end is connected with anchor clamps, and its mobile terminal is connected with detection support (13).
3. according to the mistake proofing assemble mechanism of the described liquid crystal display of claim 1; It is characterized in that: the position branch of described test rod one (6), test rod two (7), test rod three (8) is clipped to corresponding with the position of three locating notches (15), and the position of described three locating notches (15) is respectively the position of described optical filter (3), light guide sheet (4), reflecting piece (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204300469U CN202351559U (en) | 2011-11-03 | 2011-11-03 | False assembly prevention mechanism for liquid crystal screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204300469U CN202351559U (en) | 2011-11-03 | 2011-11-03 | False assembly prevention mechanism for liquid crystal screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202351559U true CN202351559U (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204300469U Withdrawn - After Issue CN202351559U (en) | 2011-11-03 | 2011-11-03 | False assembly prevention mechanism for liquid crystal screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202351559U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102402028A (en) * | 2011-11-03 | 2012-04-04 | 安徽省芜湖仪器仪表研究所 | Error-prevention assembly mechanism and detection method for LCD (liquid crystal display) screen |
| CN102998715A (en) * | 2012-11-21 | 2013-03-27 | 宁波永成双海汽车部件有限公司 | Wrong and neglected mounting detection device of air conditioner air outlet |
| CN110052746A (en) * | 2019-03-29 | 2019-07-26 | 上海兴盛密封垫有限公司 | A kind of three-layer sealed pad assembly mistake proofing detection method |
-
2011
- 2011-11-03 CN CN2011204300469U patent/CN202351559U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102402028A (en) * | 2011-11-03 | 2012-04-04 | 安徽省芜湖仪器仪表研究所 | Error-prevention assembly mechanism and detection method for LCD (liquid crystal display) screen |
| CN102402028B (en) * | 2011-11-03 | 2014-04-09 | 安徽省芜湖仪器仪表研究所 | Error-prevention assembly mechanism and detection method for LCD (liquid crystal display) screen |
| CN102998715A (en) * | 2012-11-21 | 2013-03-27 | 宁波永成双海汽车部件有限公司 | Wrong and neglected mounting detection device of air conditioner air outlet |
| CN102998715B (en) * | 2012-11-21 | 2016-01-06 | 宁波永成双海汽车部件股份有限公司 | Air-conditioner air outlet mistakes and omissions dress pick-up unit |
| CN110052746A (en) * | 2019-03-29 | 2019-07-26 | 上海兴盛密封垫有限公司 | A kind of three-layer sealed pad assembly mistake proofing detection method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120725 Effective date of abandoning: 20140409 |
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| RGAV | Abandon patent right to avoid regrant |