CN103671421B - A kind of face shield Fixed latches - Google Patents
A kind of face shield Fixed latches Download PDFInfo
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- CN103671421B CN103671421B CN201310631028.0A CN201310631028A CN103671421B CN 103671421 B CN103671421 B CN 103671421B CN 201310631028 A CN201310631028 A CN 201310631028A CN 103671421 B CN103671421 B CN 103671421B
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- latch
- base
- drawing part
- face shield
- moving block
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Abstract
The present invention relates to a kind of face shield Fixed latches, comprise base (1), drawing part (12), torsion spring (5), Returnning spring (9) and two banking stops (4), drawing part (12) is provided with the moving block (13) of V-arrangement, banking stop (4) is rotatably connected on base (1) by roller pin (7), one end of banking stop (4) is provided with latch (401), the contacts side surfaces of the other end and moving block (13), two legs of torsion spring (5) are against on banking stop (4) respectively, one end of Returnning spring (9) is connected with base (1), the other end is connected with drawing part (12).2 push type plugs are changed to single-point type drawing by the present invention, make latch to extract direction consistent with latch drawing direction, use more simple and reliable, and compact structure, therefore can reduce latch entire length and alleviate latch weight, when can ensure latch external plug, latch head does not expose socket, avoids occurring hook phenomenon.
Description
Technical field
The present invention relates to latch fixing device, more particularly, relate to a kind of face shield Fixed latches.
Background technique
At present, the latch of known conventional pressure oxygen mask and non-pressurised oxygen mask adopts the form of pinch operation, and its fundamental diagram is as follows:
When needs latch closes, press...with one's finger the upper handle 8a and lower handle 9a that push down latch, the tail end pressing down lower limit bit slice 4a in the effect of upper handle 8a and lower handle 9a makes the banking stop 4a pivot pin pin 5a that rotates rotate, and the latch of banking stop 4a is recovered in bolt body 1a and plug pin cap 2a.When pinching upper handle 8a and lower handle 9a, torsion spring 3a is compressed, the rotation due to banking stop 4a causes reduction torsion spring 6a to be opened.When needs latch is opened, unclamp finger, under the effect of torsion spring 3a spring force, upper handle 8a and lower handle 9a resets, and owing to not having the restriction of upper handle 8a and lower handle 9a, makes banking stop 4a under the effect of reduction torsion spring 6a, banking stop 4a opens, thus latch is opened.This latch goes pressing due to needs two fingers, and cause troublesome poeration to use inconvenience, and cause latch volume excessive due to this project organization, weight is large.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of face shield Fixed latches, and only need simple drawing that latch just can be made to close, latch plug is convenient.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of face shield Fixed latches, comprise base, drawing part, torsion spring, Returnning spring and two banking stops, described drawing part is provided with the moving block of V-arrangement, described banking stop is rotatably connected on described base by roller pin, one end of described banking stop is provided with latch, the contacts side surfaces of the other end and described moving block, two legs of described torsion spring are against on described banking stop respectively, one end of described Returnning spring is connected with described base, and the other end is connected with described drawing part; When pulling drawing part, described moving block inserts between two banking stops, and the side that described banking stop contacts with moving block laterally rotates, and the side being provided with latch turns to the inside, described torsion spring is compressed, and described Returnning spring has the restoring force making the reverse movement of described drawing part.
In such scheme, described base is provided with the first fixing pin, and described torsion spring set is contained on described first fixing pin, and described drawing part is provided with the first escape groove, and described first fixing pin is positioned at described first escape groove.
In such scheme, described base is provided with the second fixing pin, and one end of described Returnning spring is fixed on described second fixing pin, and the other end contacts with described drawing part, described drawing part is provided with the second escape groove, and described second fixing pin is positioned at described second escape groove.
In such scheme, described Returnning spring is wavy spring.
In such scheme, described base is provided with the position limit pin of the moving range limiting described moving block.
In such scheme, described base is provided with upper cover, and described moving block and banking stop are positioned at below described upper cover.
In such scheme, described base is also hinged with bracelet, and described bracelet and base be not in same plane.
In such scheme, described bracelet is connected with base with cup head nut by screw.
Implement face shield Fixed latches of the present invention, there is following beneficial effect:
1, the plug of 2 push types is changed to single-point type drawing by the present invention, make latch to extract direction consistent with latch drawing direction, use more simple and reliable;
2, compact structure of the present invention, therefore can reduce latch entire length and alleviate latch weight, and when can ensure latch external plug, latch head does not expose socket, avoids occurring hook phenomenon.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of face shield Fixed latches in prior art;
Fig. 2 is the structural representation of face shield Fixed latches of the present invention when being in open mode;
Fig. 3 is the A-A sectional view in Fig. 2;
Fig. 4 is the structural representation of latch when being in closed state;
Fig. 5 is the structural representation of latch when being installed on face shield;
Structural representation when Fig. 6 is bracelet rotation.
Embodiment
In order to there be understanding clearly to technical characteristics of the present invention, object and effect, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
As Figure 2-Figure 5, face shield Fixed latches of the present invention comprises base 1, drawing part 12, torsion spring 5, Returnning spring 9 and two banking stops 4.
Face shield Fixed latches is used for face shield to be fixed on helmet shell 17, and helmet shell 17 is provided with the socket 18 coordinated with latch.Drawing part 12 is provided with the moving block 13 of V-arrangement, and banking stop 4 is rotatably connected on base 1 by roller pin 7.One end of banking stop 4 is provided with latch 401, when latch 401 stretches out, can be stuck in the socket 18 on the helmet.The other end of banking stop 4 and the contacts side surfaces of moving block 13, two legs of torsion spring 5 are against on banking stop 4 respectively, and one end of Returnning spring 9 is connected with base 1, and the other end is connected with drawing part 12.
When pulling drawing part 12, moving block 13 inserts between two banking stops 4, and the side that banking stop 4 contacts with moving block 13 laterally rotates, and the side being provided with latch 401 turns to the inside, and latch can be extracted in socket 18.Torsion spring 5 is compressed, and Returnning spring 9 has the restoring force making the reverse movement of drawing part 12.When unclamping drawing part 12, under the effect of torsion spring 5 and Returnning spring 9, latch 401 laterally rotates.
Further, base 1 is provided with the first fixing pin 14, and torsion spring 5 is sleeved on the first fixing pin 14, and drawing part 12 is provided with the first escape groove 15, first fixing pin 14 is positioned at the first escape groove 15, and arranging the first escape groove 15 can provide enough spaces that drawing part 12 is moved.
Further, base 1 is provided with the second fixing pin 8, one end of Returnning spring 9 is fixed on the second fixing pin 8, the other end contacts with drawing part 12, drawing part 12 is provided with the second escape groove 16, second fixing pin 8 is positioned at the second escape groove 16, and arranging the first escape groove 15 can provide enough spaces that drawing part 12 is moved.Returnning spring 9 is preferably wavy spring, and when pulling drawing part 12, wavy spring is compressed.Be understandable that, wavy spring be one preferred embodiment, also can provide restoring force by Compress Spring or extension spring.
Further, base 1 is provided with position limit pin 10, and position limit pin 10 can the moving range of moving-limiting block 13, and position limit pin 10 is positioned at the left side of moving block 13.
Further, base 1 is provided with upper cover 6, and moving block 13 and banking stop 4 are positioned at below upper cover 6.Upper cover 6 can be connected with base 1 with the second fixing pin 8 by position limit pin 10, roller pin 7, first fixing pin 14, and the location simultaneously also achieving drawing part 12 is fixed.
Further, base 1 is also hinged with bracelet 2.Preferably, bracelet 2 by screw 3 and cup head nut 11 hinged with base 1.Bracelet 2 can rotate freely around screw 3, as shown in Figure 6, no matter ensure that the pilot of which kind of face type is when wearing face shield, fits with pilot's face all the time, improves the stability that face shield is worn.Bracelet 2 and base 1 be not in same plane, and adopt stepped form, in order to make, latch is stressed more presses close to human body face, face shield is worn more comfortable and stressed more even.
Latch plug of the present invention is convenient and reliable, and length reduces weight saving, when avoiding external, latch head exposes socket and produces hook, increases latch bracelet free to rotate at latch afterbody, so that latch bracelet can free adjustment angle make face shield wear can to adapt to different face feature.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (7)
1. a face shield Fixed latches, it is characterized in that, comprise base (1), drawing part (12), torsion spring (5), Returnning spring (9) and two banking stops (4), described drawing part (12) is provided with the moving block (13) of V-arrangement, described banking stop (4) is rotatably connected on described base (1) by roller pin (7), one end of described banking stop (4) is provided with latch (401), the contacts side surfaces of the other end and described moving block (13), two legs of described torsion spring (5) are against on described banking stop (4) respectively, one end of described Returnning spring (9) is connected with described base (1), the other end is connected with described drawing part (12), described base (1) is also hinged with bracelet (2), and described bracelet (2) and base (1) be not in same plane,
When pulling drawing part (12), described moving block (13) inserts between two banking stops (4), the side that described banking stop (4) contacts with moving block (13) laterally rotates, the side being provided with latch (401) turns to the inside, described torsion spring (5) is compressed, and described Returnning spring (9) has the restoring force making the reverse movement of described drawing part (12).
2. face shield Fixed latches according to claim 1, it is characterized in that, described base (1) is provided with the first fixing pin (14), described torsion spring (5) is sleeved on described first fixing pin (14), described drawing part (12) is provided with the first escape groove (15), and described first fixing pin (14) is positioned at described first escape groove (15).
3. face shield Fixed latches according to claim 1, it is characterized in that, described base (1) is provided with the second fixing pin (8), one end of described Returnning spring (9) is fixed on described second fixing pin (8), the other end contacts with described drawing part (12), described drawing part (12) is provided with the second escape groove (16), and described second fixing pin (8) is positioned at described second escape groove (16).
4. face shield Fixed latches according to claim 3, is characterized in that, described Returnning spring (9) is wavy spring.
5. face shield Fixed latches according to claim 1, is characterized in that, described base (1) is provided with the position limit pin (10) of the moving range of the described moving block of restriction (13).
6. face shield Fixed latches according to claim 1, is characterized in that, described base (1) is provided with upper cover (6), and described moving block (13) and banking stop (4) are positioned at described upper cover (6) below.
7. face shield Fixed latches according to claim 1, is characterized in that, described bracelet (2) is connected with base (1) with cup head nut (11) by screw (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310631028.0A CN103671421B (en) | 2013-11-29 | 2013-11-29 | A kind of face shield Fixed latches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310631028.0A CN103671421B (en) | 2013-11-29 | 2013-11-29 | A kind of face shield Fixed latches |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103671421A CN103671421A (en) | 2014-03-26 |
| CN103671421B true CN103671421B (en) | 2016-02-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310631028.0A Active CN103671421B (en) | 2013-11-29 | 2013-11-29 | A kind of face shield Fixed latches |
Country Status (1)
| Country | Link |
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| CN (1) | CN103671421B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389870B (en) * | 2014-10-27 | 2016-04-27 | 上海纳杰电气成套有限公司 | A kind of arc clamp-type fixer |
| CN105065384B (en) * | 2015-08-07 | 2017-09-22 | 陈文韬 | Umbrella be connected component and application the component bottle opener and Luffa sponge cleaning brush |
| CN109914189A (en) * | 2019-04-01 | 2019-06-21 | 江苏亿之博实业有限公司 | Firm chinampa and its application method |
| CN111577743B (en) * | 2020-04-22 | 2021-09-14 | 凯迈（洛阳）测控有限公司 | Quick stop gear |
| CN112610772B (en) * | 2020-12-16 | 2022-08-02 | 大庆石油管理局有限公司 | Quick connector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6301720B1 (en) * | 1999-07-13 | 2001-10-16 | Thomson-Csf Sextant | Modular helmet |
| CN101813117A (en) * | 2010-04-20 | 2010-08-25 | 海洋王照明科技股份有限公司 | Impact-resistant bolt connecting device |
| CN201916320U (en) * | 2010-12-23 | 2011-08-03 | 江旭良 | Quick bolt |
| CN203538470U (en) * | 2013-09-27 | 2014-04-16 | 无锡市晋业航空安全设备有限公司 | Pull bolt device |
| CN203585022U (en) * | 2013-11-29 | 2014-05-07 | 航宇救生装备有限公司 | Mask fixing bolt |
-
2013
- 2013-11-29 CN CN201310631028.0A patent/CN103671421B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6301720B1 (en) * | 1999-07-13 | 2001-10-16 | Thomson-Csf Sextant | Modular helmet |
| CN101813117A (en) * | 2010-04-20 | 2010-08-25 | 海洋王照明科技股份有限公司 | Impact-resistant bolt connecting device |
| CN201916320U (en) * | 2010-12-23 | 2011-08-03 | 江旭良 | Quick bolt |
| CN203538470U (en) * | 2013-09-27 | 2014-04-16 | 无锡市晋业航空安全设备有限公司 | Pull bolt device |
| CN203585022U (en) * | 2013-11-29 | 2014-05-07 | 航宇救生装备有限公司 | Mask fixing bolt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103671421A (en) | 2014-03-26 |
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