CN113009638B

CN113009638B - Dustproof door of dustproof light backplane connector and transmission mechanism thereof

Info

Publication number: CN113009638B
Application number: CN202110102300.0A
Authority: CN
Inventors: 石良昌; 胡文参; 刘贲; 陈谋钦; 龙承毅; 肖应富; 王旭
Original assignee: Shanghai Aerospace Science and Industry Appliance Co Ltd
Current assignee: Shanghai Aerospace Science and Industry Appliance Co Ltd
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2022-04-22
Anticipated expiration: 2041-01-26
Also published as: CN113009638A

Abstract

A dustproof door of a dustproof light backplane connector and a transmission mechanism thereof comprise a dustproof door assembly, a shell, a push plate, a seal plate A, a seal plate B, adaptive sleeves, a torsional spring A, a torsional spring B and a torsional spring guide rod, wherein the dustproof door assembly is arranged in the opening end of the shell, two sides of one end part of the dustproof door assembly are respectively connected with the adaptive sleeves which do not move relative to the dustproof door assembly in the self axial direction, and a first long torsion arm of the torsional spring A and a second long torsion arm of the torsional spring B are respectively and movably inserted into the corresponding adaptive sleeves; the dustproof door closes another end be connected with the vertical sliding fit of casing terminal surface the push pedal, the push pedal promotes downwards under the exogenic action dustproof door closes the piece and produces progressive pitch arc displacement. The invention solves the problem that the plugging length of the connector required by opening the dustproof door is too long; the problem of the connector overall dimension too big that leads to because of preventing torsional spring torsion arm and door from breaking away from is solved.

Description

Dustproof door of dustproof light backplane connector and transmission mechanism thereof

Technical Field

The invention belongs to the technical field of connectors, and particularly relates to a dustproof door of a dustproof optical backplane connector and a transmission mechanism of the dustproof optical backplane connector.

Background

With the development of optical communication requirements, the fan cooling component exists in the cabinet, which can drive the disturbance of dust in the cabinet, so that the butt joint end of the optical fiber contact element is polluted to influence the transmission performance of the optical fiber contact element. Therefore, the use of optical backplane connectors with dust doors to implement signal transmission is increasing.

However, the conventional dustproof optical backplane connector is limited in overall dimension and structure, and mostly adopts a two-half type middle opening dustproof door structure with an outward opening door or an inward and outward opening door. No matter open the door when opening door interior or open outward, the dust that attaches to the door surface all can open the instant and fall into optic fibre contact butt end from opening the door and door pivot gap at two halves doors, especially interior open structure dust is changeed and is fallen into optic fibre butt end.

In addition, compared with a double-door structure, the length which the single-door structure needs to avoid when the connector is plugged is about twice that of the double-door structure, so that the plugging length of the connector required by the conventional single-door structure is too long to ensure that the door is completely opened.

Due to structural limitation, no matter a single door structure or a double door structure, the distance between each point on the motion track of the door and the center of the torsion spring rotating shaft is often not everywhere equal, so that in order to prevent the torsion spring torsion arm from being separated from the door, the length of the torsion spring torsion arm needs to be designed according to the point which satisfies the longest distance between the motion track and the center of the torsion spring rotating shaft, and meanwhile, in order to avoid interference between the torsion spring torsion arm and parts such as a shell in the motion process of the door, the shortest distance between the motion track and the center of the torsion spring rotating shaft also needs to be the same size of the space of the shell, and finally, the overall size of the connector is overlarge.

Disclosure of Invention

The invention provides a dustproof door of a dustproof optical backplane connector and a transmission mechanism thereof, aiming at the defects in the prior art, and the specific technical scheme is as follows:

a dustproof door of a dustproof optical backplane connector and a transmission mechanism thereof comprise a dustproof door assembly, a shell, a push plate, a seal plate A, a seal plate B, a self-adaptive sleeve, a torsion spring A, a torsion spring B, a torsion spring guide rod and a screw, the shell is a cuboid structure with an opening on the top surface and a hollow interior, a dustproof door closing piece is arranged in the opening end of the shell, the two sides of one end part of the dustproof door closing part are respectively connected with the self-adaptive sleeve which does not move relatively to the dustproof door closing part in the self axial direction, the torsion spring A and the torsion spring B are respectively arranged on the outer side of the end surface of the shell through the torsion spring guide rod, the first long torsion arm of the torsion spring A and the second long torsion arm of the torsion spring B are respectively and movably inserted into the corresponding self-adaptive sleeve, the first short torque arm of the torsion spring A and the second short torque arm of the torsion spring B are respectively and fixedly connected with the corresponding end face of the shell; the other end of the dustproof door closing part is connected with the push plate which is longitudinally matched with the end face of the shell in a sliding manner, and the push plate pushes the dustproof door closing part downwards under the action of external force to generate progressive arc displacement; the two end faces of the shell are in butt joint with the sealing plate A and the sealing plate B which are matched with the two end faces of the shell through the screws.

Furthermore, the dustproof door assembly comprises a dustproof door, a pull plate, a speed regulating rod and a connecting plate, one end of the dustproof door is bent twice by the pull plate and clamped and fixed, namely, a and b are bent, the dustproof door at the position of b is bent and synchronously bent along with the pull plate, the other end of the dustproof door is bent twice by the connecting plate and clamped and fixed, namely, c and d are bent, the dustproof door at the position of c and d is synchronously bent along with the connecting plate, the speed regulating rod is wound by the connecting plate after clamping and fixing, transition positions at two sides are designed into fillet b transition, and the dustproof door and the speed regulating rod are connected and fixed.

Furthermore, two end faces of the shell are respectively provided with a guide groove formed by connecting a straight guide groove and an arc guide groove, and the dustproof door moves along the guide grooves in the opening or closing movement process; two end faces of the shell are respectively provided with a straight groove, and the push plate moves up and down in the straight grooves; positioning bosses are arranged on two end faces of the shell; mounting holes a are formed in two end faces of the shell and used for mounting the torsion spring guide rods; the two end faces of the shell are respectively provided with a fixing hole for fixing a first short torsion arm of the torsion spring A and a second short torsion arm of the torsion spring B; and threaded holes are formed in the two end faces of the shell and used for connecting and fixing the screws.

Furthermore, a left sliding block and a right sliding block which are in mirror symmetry are respectively arranged on two end sides of the push plate, end face antifriction grooves are respectively arranged on the outer end faces of the left sliding block and the right sliding block, front antifriction grooves are respectively arranged on the front sides, a locking groove a and a sliding groove a are respectively arranged on the rear sides, and transition positions are transited by using a chamfer angle a and a guide circle; an arc is designed in the middle of the bottom end of the push plate, and the dustproof door slides around the arc when being opened or closed; a boss is designed in the middle of the top end of the push plate, the butt joint end of the optical backplane connector pushes the push plate to move downwards by propping against the boss, and chamfers b are arranged on two sides of the boss; avoidance grooves are formed in the two ends of the boss respectively to avoid interference with the shell; the middle part of the front side of the boss is provided with a high plane and a low plane which are in smooth transition through an inclined plane, and a pulling plate of the dustproof door closing piece is positioned in a space between the low plane and the high plane after the dustproof door closing piece is opened; the middle part of the rear side of the boss is provided with a motion space groove, the motion space groove and the bottom arc are in smooth transition through a transition inclined plane, and a connecting plate and a speed regulating rod in the dustproof door assembly move up and down in the motion space groove.

Further, the seal plate A and the seal plate B are in mirror symmetry; the inner sides of the sealing plate A and the sealing plate B are respectively provided with a first positioning hole and a second positioning hole which are used for being matched with the positioning bosses on the shell; the inner sides of the sealing plate A and the sealing plate B are respectively provided with a first sliding chute and a second sliding chute which are used for being matched with a left sliding block and a right sliding block in the push plate so as to position the push plate; a first locking groove and a second locking groove are correspondingly arranged on one side of the first sliding groove and one side of the second sliding groove respectively, and the first locking groove and the second locking groove and the locking groove a on the push plate form a mechanical locking structure together for locking and unlocking the position of the speed regulating rod; the inner sides of the sealing plate A and the sealing plate B are respectively provided with a first groove and a second groove which are respectively used as torsion arm movement spaces of the torsion spring A and the torsion spring B; the inner sides of the sealing plate A and the sealing plate B are respectively provided with a first mounting groove and a second mounting groove which are respectively used as mounting spaces of the torsion spring A and the torsion spring B; the inner sides of the sealing plate A and the sealing plate B are respectively provided with a first mounting hole and a second mounting hole which are respectively used for mounting the torsion spring guide rod; the upper part and the lower part of the sealing plate A and the sealing plate B are respectively provided with a first screw hole and a second screw hole which are used for connecting and fixing the screws.

Furthermore, semicircular grooves are symmetrically formed in the two ends of the bent pulling plate; a long cylinder is arranged in the middle of the speed adjusting rod and is used for being matched with the connecting plate; the two ends of the speed regulating rod are provided with short cylinders which are matched with the locking groove a on the push plate and the first locking groove and the second locking groove on the sealing plate A and the sealing plate B, the diameter of each long cylinder is smaller than that of each short cylinder, and the two ends of the speed regulating rod are in smooth transition through chamfer angles.

Furthermore, the self-adaptive sleeve is provided with a round rod with an annular groove, and the annular groove is matched with the semi-circular groove on the pull plate so as to limit the self-adaptive sleeve to move relative to the pull plate along the axial direction of the self-adaptive sleeve; a torsion spring hole is designed in the center of the self-adaptive sleeve, and the torsion spring hole is respectively matched with the first long torsion arm of the torsion spring A and the second long torsion arm of the torsion spring B; the left end part of the self-adaptive sleeve is provided with a fillet a for transition, and the right side of the self-adaptive sleeve is provided with a cylindrical surface.

Furthermore, the torsional spring guide rod comprises a large cylindrical surface and a small cylindrical surface, the small cylindrical surface is inserted into the mounting hole a on the shell, and the inner holes of the torsional spring A and the torsional spring B are matched with the corresponding large cylindrical surface.

The invention has the beneficial effects that:

1. the invention adopts a single-door structure which is opened laterally, and solves the problem that dust is easy to fall into the optical fiber butt joint end in the process of opening the dustproof optical backplane connector;

2. according to the invention, the speed adjusting rod is locked at a specific position, so that the opening (closing) speed of the dustproof door is adjusted, the inserting length of the connector required for opening the dustproof door is reduced, and the problem of overlong inserting length of the connector required for opening the dustproof door is solved;

3. according to the invention, the two sides of one end part of the dustproof door assembly 8 are respectively connected with the self-adaptive sleeve 6 which does not have relative movement relative to the dustproof door assembly 8 in the axial direction, and meanwhile, the first long torque arm 7.1 of the torsion spring A7 and the second long torque arm 9.1 of the torsion spring B9 are respectively movably inserted into the corresponding self-adaptive sleeve 6, so that the first long torque arm 7.1 of the torsion spring A7 and the second long torque arm 9.1 of the torsion spring B9 are always lapped with the dustproof door assembly 8 in the opening or closing movement process of the dustproof door assembly 8, and meanwhile, the first long torque arm 7.1 and the second long torque arm 9.1 are not required to be designed according to the point which meets the longest distance between the movement track of the dustproof door assembly 8 and the center of the torsion spring guide rod 10, and the problem of overlarge external dimension of the connector caused by preventing the torsion spring torque arms from being separated from the door is solved.

Drawings

Fig. 1 is a schematic structural view of a dustproof door and a transmission mechanism thereof in a non-plugged state of a dustproof optical backplane connector according to the present invention;

fig. 2 is a schematic structural view of a dust-proof door and a transmission mechanism thereof after a sealing plate B and a housing are hidden in a non-plugged state of the dust-proof optical backplane connector according to the present invention;

fig. 3 is a schematic structural view of a dust-proof door and a transmission mechanism thereof after a sealing plate B is hidden in a non-plugged state of the dust-proof optical backplane connector according to the present invention;

fig. 4 is a schematic structural view of a dust-proof door and a transmission mechanism thereof after a sealing plate B is hidden in the dust-proof optical backplane connector in the plugged state according to the present invention;

FIG. 5 is a schematic structural view of the closure plate A of the present invention;

FIG. 6 is a schematic structural view of a closure plate B of the present invention;

FIG. 7 is a schematic view of the housing of the present invention;

FIG. 8 is a front structural view of the push plate according to the present invention;

FIG. 9 is a schematic diagram of the back structure of the push plate according to the present invention;

FIG. 10 is a schematic view of the adaptive bushing structure according to the present invention;

FIG. 11 is a schematic structural view of a torsion spring A according to the present invention;

FIG. 12 is a schematic structural view of a torsion spring B according to the present invention;

FIG. 13 is a schematic view of the dust seal of the present invention;

FIG. 14 is a schematic view of a structure of a throttle lever according to the present invention;

FIG. 15 is a schematic structural view of a dust-proof door fixed by bending a pulling plate according to the present invention;

FIG. 16 is a schematic structural view of the connecting plate bending fixed dust-proof door and the connecting speed-adjusting lever according to the present invention;

FIG. 17 is a schematic view of the torsion spring guide bar according to the present invention.

Shown in the figure:

1. the sealing plate A comprises 1.1-a first positioning hole, 1.2-a first locking groove, 1.3-a first groove, 1.4-a first mounting hole, 1.5-a first mounting groove, 1.6-a first sliding groove and 1.7-a first screw hole;

2. the device comprises a shell, a 2.1-threaded hole, a 2.2-straight guide groove, a 2.3-arc guide groove, a 2.4-mounting hole a, a 2.5-fixing hole, a 2.6-straight groove and a 2.7-positioning boss;

3. a push plate, 3.1-right slide block, 3.2-left slide block, 3.3-boss, 3.4-low plane, 3.5-high plane, 3.6-inclined plane, 3.7-avoiding groove, 3.8-chamfer angle a, 3.9-locking groove a, 3.10-front antifriction groove, 3.11-end face antifriction groove, 3.12-guide circle, 3.13-motion space groove, 3.14-transition inclined plane, 3.15-arc, 3.16-chamfer angle b, 3.17-sliding groove a;

4. a sealing plate B, 4.1-a second positioning hole, 4.2-a second locking groove, 4.3-a second mounting hole, 4.4-a second groove, 4.5-a second mounting groove, 4.6-a second sliding groove and 4.7-a second screw hole;

5. a screw;

6. the self-adaptive sleeve comprises 6.1-a rounded corner a, 6.2-an annular groove, 6.3-a cylindrical surface and 6.4-a torsion spring hole;

7. torsion spring A, 7.1-first long torsion arm, 7.2-first bend, 7.3-first short torsion arm;

8. a dustproof door assembly, 8.1-pulling plate, 8.2-semicircular groove, 8.3-dustproof door, 8.4-speed adjusting rod, 8.5-connecting plate, 8.6-bending b, 8.7-bending a, 8.8-winding, 8.9-bending c, 8.10-fillet b, 8.11-bending d, 8.12-chamfer angle, 8.13-short cylinder and 8.14-long cylinder;

9. a torsion spring B, 9.1-a second long torsion arm, 9.2-a second bend and 9.3-a second short torsion arm;

10. a torsion spring guide rod, 10.1-a small cylindrical surface and 10.2-a large cylindrical surface.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1-4 and fig. 11, a dustproof light backplane connector dust-proof door and drive mechanism thereof, including dustproof door closes piece 8, casing 2, push pedal 3, shrouding A1, shrouding B4, self-adaptation sleeve pipe 6, torsional spring A7, torsional spring B9, torsional spring guide arm 10 and screw 5, casing 2 is top surface opening and inside hollow cuboid structure, the open end of casing 2 embeds there is dustproof door closes piece 8, 8 tip both sides of dustproof door closes piece are connected with respectively and close 8 no relative motion for dustproof door in self axial self adaptive sleeve pipe 6, torsional spring A7 and torsional spring B9 pass through respectively torsional spring guide arm 10 installs in the casing 2 terminal surface outside, torsional spring A7's first long torque arm 7.1 with the second of torsional spring B9 is long torque arm 9.1 activity respectively and is inserted and is corresponding in the self-adaptation sleeve pipe 6, torsional spring A7's first short torque arm 7.3 with torsional spring B9's second is short torque arm 9.3 respectively with fixed connection is fixed with casing 2 is fixed (ii) a The other end of the dustproof door closing part 8 is connected with the push plate 3 which is longitudinally matched with the end surface of the shell 2 in a sliding manner, and the push plate 3 pushes the dustproof door closing part 8 downwards under the action of external force to generate progressive arc displacement; the two end faces of the shell 2 are butted with the sealing plate A1 and the sealing plate B4 matched with the two end faces through the screws 5.

Through the technical scheme, the other end of the dustproof door closing part 8 is connected with the push plate 3 which is in longitudinal sliding fit with the end face of the shell 2, and the push plate 3 pushes the dustproof door closing part 8 downwards under the action of external force to generate progressive arc displacement, so that a single door structure which is opened laterally is formed, and the problem that dust easily falls into an optical fiber butt joint end in the door opening process of the dustproof optical backplane connector is solved;

the push plate 3 pushes the dustproof door assembly 8 downwards under the action of external force to generate progressive arc displacement, so that the opening (closing) speed of the dustproof door assembly 8 is adjusted, and the insertion length of the connector required for opening the dustproof door 8.3 is reduced;

the two sides of one end of the dustproof door assembly 8 are respectively connected with an adaptive sleeve 6 which does not have relative movement relative to the dustproof door assembly 8 in the axial direction, and meanwhile, a first long torque arm 7.1 of a torsion spring A7 and a second long torque arm 9.1 of a torsion spring B9 are respectively movably inserted into the corresponding adaptive sleeve 6, so that the first long torque arm 7.1 of the torsion spring A7 and the second long torque arm 9.1 of the torsion spring B9 are always lapped with the dustproof door assembly 8 in the opening or closing movement process of the dustproof door assembly 8, meanwhile, the first long torque arm 7.1 and the second long torque arm 9.1 are not required to be designed according to the point which the longest distance between the movement track of the dustproof door assembly 8 and the center of a torsion spring guide rod 10 is met, and the problem of overlarge overall size of the connector caused by the fact that the torsion spring torque arms are prevented from being separated from the dustproof door assembly is solved.

As shown in fig. 13 to 16, the dust-proof door assembly 8 is composed of a dust-proof door 8.3, a pulling plate 8.1, a speed-adjusting lever 8.4 and a connecting plate 8.5, one end of the dust-proof door 8.3 is bent and clamped and fixed twice by the pulling plate 8.1, namely, the bending a8.7 and the bending b8.6 are formed, the dust-proof door 8.3 at the bending b8.6 is bent synchronously with the pulling plate 8.1, the other end of the dust-proof door is bent and clamped and fixed twice by the connecting plate 8.5, namely, the bending c8.9 and the bending d8.11 are formed, the dust-proof door 8.3 at the bending c8.9 and the bending d8.11 is bent synchronously with the connecting plate 8.5, the speed-adjusting lever 8.4 is wound by the connecting plate 8.5 after being clamped and fixed, and the transition positions at two sides are designed as round corners b8.10, so that the dust-proof door 8.3 is connected and fixed with the speed-adjusting lever 8.4.

Through above-mentioned technical scheme, the fixed between 8.1, the governor lever 8.4 and connecting plate 8.5 and dust door 8.3 is inseparabler.

As shown in fig. 7, the two end faces of the housing 2 are respectively provided with a guide groove formed by connecting a straight guide groove 2.2 and an arc guide groove 2.3, and the dustproof door 8.3 moves along the guide groove in the opening or closing movement process; two end faces of the shell 2 are respectively provided with a straight groove 2.6, and the push plate 3 moves up and down in the straight grooves 2.6; positioning bosses 2.7 are arranged on two end faces of the shell 2; mounting holes a2.4 are formed in two end faces of the shell 2 and used for mounting the torsion spring guide rods 10; fixing holes 2.5 are formed in two end faces of the shell 2 and are used for fixing a first short torsion arm 7.3 of the torsion spring A7 and a second short torsion arm 9.3 of the torsion spring B9 respectively; threaded holes 2.1 are designed in the two end faces of the shell 2 and used for connecting and fixing the screws 5.

Through above-mentioned technical scheme, 2 both ends faces of casing all design have the location boss 2.7, respectively with the locating hole cooperation in shrouding A1 and the shrouding B4, guarantee in 3 locating surfaces of push pedal are all in shrouding A1 and shrouding 4B's spout, reduce the frictional resistance that the 3 motion in-process of push pedal received, improve the motion flexibility.

As shown in fig. 8 and 9, a left slider 3.2 and a right slider 3.1 which are mirror symmetric are respectively arranged at two end sides of the push plate 3, end face antifriction grooves 3.11 are respectively arranged on the outer end faces of the left slider 3.2 and the right slider 3.1, front antifriction grooves 3.10 are respectively arranged at the front side, lock grooves a3.9 and sliding grooves a3.17 are respectively arranged at the rear side, and transition positions are transited by chamfers a3.8 and guide circles 3.12; an arc 3.15 is designed in the middle of the bottom end of the push plate 3, and the dustproof door 8.3 slides around the arc 3.15 when being opened or closed; a boss 3.3 is designed in the middle of the top end of the push plate 3, the butt joint end of the optical backplane connector pushes the push plate 3 to move downwards by propping against the boss 3.3, and chamfers b3.16 are arranged on two sides of the boss 3.3; avoidance grooves 3.7 are respectively formed at two ends of the boss 3.3, so that interference with the shell 2 is avoided; the middle part of the front side of the boss 3.3 is provided with a high plane 3.5 and a low plane 3.4, and the high plane and the low plane are smoothly transited through an inclined plane 3.6, and a pulling plate 8.1 of the dustproof door closing part 8 is positioned on a space between the low plane 3.4 and the high plane 3.5 after the dustproof door closing part is opened; a movement space groove 3.13 is designed in the middle of the rear side of the boss 3.3, the movement space groove 3.13 and the bottom arc 3.15 are in smooth transition through a transition inclined plane 3.14, and a connecting plate 8.5 and a speed regulating rod 8.4 in the dustproof door assembly 8 move up and down in the movement space groove 3.13.

Through the technical scheme, the transmission butt joint of the butt joint end force of the push plate 3 and the optical backplane connector is realized, and a space for the connecting plate 8.5 and the speed regulating rod 8.4 to move up and down in the movement space groove 3.13 of the push plate 3 is also provided.

As shown in fig. 5 and 6, the cover plate a1 and the cover plate B4 are mirror images; the inner sides of the sealing plate A1 and the sealing plate B4 are respectively provided with a first positioning hole 1.1 and a second positioning hole 4.1 which are used for being matched with a positioning boss 2.7 on the shell 2; the inner sides of the sealing plate A1 and the sealing plate B4 are respectively provided with a first sliding groove 1.6 and a second sliding groove 4.6 which are used for being matched with left and right sliding blocks in the push plate 3 so as to position the push plate 3; a first lock groove 1.2 and a second lock groove 4.2 are correspondingly arranged on one side of the first sliding groove 1.6 and one side of the second sliding groove 4.6 respectively, and the first lock groove 1.2 and the second lock groove 4.2 and a lock groove a3.9 on the push plate 3 form a mechanical lock structure together for locking and unlocking the position of the speed adjusting rod 8.4; the inner sides of the sealing plate A1 and the sealing plate B4 are respectively provided with a first groove 1.3 and a second groove 4.4 which are respectively used as torsion arm movement spaces of a torsion spring A7 and a torsion spring B9; the inner sides of the sealing plate A1 and the sealing plate B4 are respectively provided with a first mounting groove 1.5 and a second mounting groove 4.5 which are respectively used as mounting spaces of a torsion spring A7 and a torsion spring B9; the inner sides of the sealing plate A1 and the sealing plate B4 are respectively provided with a first mounting hole 1.4 and a second mounting hole 4.3 which are respectively used for mounting the torsion spring guide rod 10; the upper part and the lower part of the sealing plate A1 and the sealing plate B4 are respectively provided with a first screw hole 1.7 and a second screw hole 4.7 which are used for connecting and fixing the screw 5.

Through above-mentioned technical scheme, shrouding A1 and shrouding B4's inboard is equipped with first locating hole 1.1 and second locating hole 4.1 respectively, be used for cooperating with location boss 2.7 on the casing 2, confirm shrouding A1 and shrouding B4 position relative casing 2, pass through push pedal 3 simultaneously, the sliding fit location between speed adjusting lever 8.4 and shrouding A1 and shrouding B4, the position of push pedal 3 and speed adjusting lever 8.4 relative casing 2 has been confirmed, for reducing the frictional resistance of moving part, be big clearance fit between push pedal 3 and speed adjusting lever 8.4 and the casing 2 as the moving part.

As shown in fig. 5, 6, 8, 9 and 14, the two ends of the pulling plate 8.1 are symmetrically provided with semicircular grooves 8.2 after being bent; a long round column 8.14 is arranged in the middle of the speed adjusting rod 8.4 and is used for being matched with the connecting plate 8.5; two ends of the speed regulating rod are provided with short cylinders 8.13 which are used for being matched with a locking groove a3.9 on the push plate 3, a first locking groove 1.2 and a second locking groove 4.2 on the sealing plate A1 and the sealing plate B4, the diameter of each long cylinder 8.14 is smaller than that of each short cylinder 8.13, and two ends of each speed regulating rod 8.4 are in smooth transition through chamfer angles 8.12.

Through above-mentioned technical scheme, through at specific position locking governor lever 8.4, realize that dustproof door 8.3 opens (closes) speed control, finally realize reducing and open the required connector of dustproof door 8.3 and insert the length of closing.

As shown in fig. 10, the adaptive sleeve 6 is provided with a round rod with an annular groove 6.2, and the annular groove 6.2 is matched with the semi-circular groove 8.2 on the pulling plate 8.1 to limit the axial movement of the adaptive sleeve 6 relative to the pulling plate 8.1 along the adaptive sleeve 6; a torsion spring hole 6.4 is designed in the center of the adaptive sleeve 6, and the torsion spring hole 6.4 is respectively matched with the first long torsion arm 7.1 of the torsion spring A7 and the second long torsion arm 9.1 of the torsion spring B9; the left end of the self-adaptive sleeve 6 is provided with a fillet a6.1 for transition, and the right side is provided with a cylindrical surface 6.3.

Through the technical scheme, under the matching action of the annular groove 6.2 and the semicircular groove 8.2, the self-adaptive sleeve 6 has no relative movement relative to the dustproof door assembly 8 in the axial direction of the self-adaptive sleeve 6; meanwhile, the first long torque arm 7.1 and the second long torque arm 9.1 can freely slide in the torsion spring hole 6.4 in the self-adaptive sleeve 6, so that the first long torque arm 7.1 of the torsion spring A7 and the second long torque arm 9.1 of the torsion spring B9 are always in lap joint with the dustproof door assembly 8 in the opening or closing movement process of the dustproof door assembly 8, meanwhile, the first long torque arm 7.1 and the second long torque arm 9.1 are not required to be designed according to the point which meets the longest distance between the movement track of the dustproof door assembly 8 and the center of the torsion spring guide rod 10, and the problem that the overall size of the connector is overlarge due to the fact that the torsion spring torque arm is prevented from being separated from the dustproof door assembly is solved.

As shown in fig. 17, the torsion spring guide rod 10 is composed of a large cylindrical surface 10.2 and a small cylindrical surface 10.1, the small cylindrical surface 10.1 is inserted into the mounting hole a2.4 of the housing 2, and the inner holes of the torsion springs a7 and B9 are matched with the corresponding large cylindrical surface 10.2.

Through the technical scheme, the torsional spring guide rod 10 is convenient to be connected and matched with the shell 2 and the torsional spring A/B.

The working principle of the invention is as follows:

in the non-inserted state, namely the free state of the optical backplane connector, under the action of the torsion spring force of the torsion spring A7 and the torsion spring force of the torsion spring B9, the dustproof door assembly 8 is in the completely closed position, the connecting plate 8.5 end in the dustproof door assembly 8 is positioned in the movement space groove 3.13 and is in the extreme highest position, and two short cylinders 8.13 in the speed regulating rod 8.4 are positioned in the first locking groove 1.2 and the second locking groove 4.2 in the sealing plate A1 and the sealing plate B4; the push plate 3 is now also in the extreme highest position.

When the connector is plugged, the other end (plug or socket) of the optical backplane connector is attached to the upper end face of the boss 3.3 in the push plate 3, and the push plate 3 is pushed to move downwards under the action of external force.

In a certain distance from the beginning of the movement, due to the limiting effect of the sliding groove a3.17 on the push plate 3, the two short cylinders 8.13 in the speed adjusting rod 8.4 are locked in the first locking groove 1.2 and the second locking groove 4.2 in the sealing plate A1 and the sealing plate B4, namely, in a certain distance from the beginning of the movement, the connecting plate 8.5 end in the dustproof door assembly 8 is fixed; at the moment, the push plate 3 moves downwards under the action of external force and transmits the force to the dustproof door 8.3 in the dustproof door closing part 8, the surface of the dustproof door 8.3 and the surface of the arc 3.15 in the push plate 3 are both smooth surfaces, so that the friction force between the surfaces is small, the dustproof door 8.3 slides around the arc 3.15, and the dustproof door closing part 8 is gradually opened under the action of the acting force exerted on the dustproof door 8.3 by the push plate 3 and the action of the torsional spring force of the torsional spring A7 and the torsional spring B9; because of the connecting plate 8.5 end among the dustproof door closing member 8 is fixed motionless, combine the movable pulley principle to obtain the speed that dustproof door closing member 8 was opened this moment and be the twice of push pedal 3 velocity of motion.

Under the action of external force, the push plate 3 continues to move downwards, when the lock groove 3.9 in the push plate 3 is flush with the two short cylinders 8.13 at the two ends of the speed regulating rod 8.4, under the action of the tension of the dustproof door 8.3, the two short cylinders 8.13 at the two ends of the speed regulating rod 8.4 slide into the lock groove 3.9 in the push plate 3 and move downwards synchronously with the push plate 3, and at the moment, the opening speed of the dustproof door closing part 8 and the movement speed of the push plate 3 are changed from the original 2:1 relation to the 1:1 relation.

The initial distance between the locking groove a3.9 on the push plate 3 and the first locking groove 1.2 and the locking groove 4.2 in the sealing plate A1 and the sealing plate B4 is reasonably designed to ensure the plugging length requirement of the optical backplane connector, and the problem that the other end (plug or socket) of the connector interferes with the dustproof door assembly 8 to cause structural failure in the plugging process of the connector is avoided.

According to the required horizontal direction opening degree of the optical backplane connector of 14.9mm and the plugging length of 17mm, the initial distance between the locking groove a3.9 on the push plate 3 and the first locking groove 1.2 and the locking groove 4.2 in the sealing plate A1 and the sealing plate B4 is designed to be 5.2mm, through physical verification, the requirement of the plugging length of 17mm of the connector is met, and the other end (plug or socket) of the connector does not interfere with the dustproof door assembly 8 in the plugging process.

When the connector is separated, the other end (plug or socket) of the connector is separated from the upper end face of the boss 3.3 in the push plate 3, the external force acting on the push plate 3 is eliminated, and at the moment, the dustproof door closing part 8 is closed under the action of the torsion spring forces of the torsion spring A7 and the torsion spring B9.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a dustproof light backplane connector dust door which characterized in that: comprises a dustproof door closing part (8), a shell (2), a push plate (3), a sealing plate A (1), a sealing plate B (4), a self-adaptive sleeve (6), a torsional spring A (7), a torsional spring B (9), a torsional spring guide rod (10) and screws (5), wherein the shell (2) is of a cuboid structure with an opening on the top surface and a hollow interior, the dustproof door closing part (8) is arranged in the opening end of the shell (2), two sides of one end part of the dustproof door closing part (8) are respectively connected with the self-adaptive sleeve (6) which does not have relative motion relative to the dustproof door closing part (8) in the axial direction of the self-adaptive sleeve, the torsional spring A (7) and the torsional spring B (9) are respectively installed outside the end surface of the shell (2) through the torsional spring guide rod (10), a first long torsion arm (7.1) of the torsional spring A (7) and a second long torsion arm (9.1) of the torsional spring B (9) are respectively movably inserted into the corresponding self-adaptive sleeve (6), a first short torque arm (7.3) of the torsion spring A (7) and a second short torque arm (9.3) of the torsion spring B (9) are respectively and fixedly connected with the corresponding end surface of the shell (2); the other end of the dustproof door closing part (8) is connected with the push plate (3) which is in longitudinal sliding fit with the end face of the shell (2), and the push plate (3) pushes the dustproof door closing part (8) downwards under the action of external force to generate progressive arc displacement; the two end faces of the shell (2) are in butt joint with the sealing plate A (1) and the sealing plate B (4) matched with the two end faces through the screws (5);

the dustproof door assembly (8) consists of a dustproof door (8.3), a pull plate (8.1), a speed regulating rod (8.4) and a connecting plate (8.5), one end of the dustproof door (8.3) is bent, clamped and fixed twice by the pull plate (8.1), namely a bent part a (8.7) and a bent part b (8.6), the dustproof door (8.3) at the bent part b (8.6) is synchronously bent along with the pull plate (8.1), the other end of the dustproof door is bent, clamped and fixed twice by the connecting plate (8.5), namely a bent part c (8.9) and a bent part d (8.11), the dustproof door (8.3) at the bent part c (8.9) and the bent part d (8.11) is synchronously bent along with the connecting plate (8.5), the speed regulating rod (8.4) is wound by the connecting plate (8.5) after clamping and fixing, and transition parts at two sides are designed into round corners b (8.10), so that the dustproof door (8.3) is fixedly connected with the speed regulating rod (8.4);

the two end faces of the shell (2) are respectively provided with a guide groove formed by connecting a straight guide groove (2.2) and an arc guide groove (2.3), and the dustproof door (8.3) moves along the guide grooves in the opening or closing movement process; two end faces of the shell (2) are respectively provided with a straight groove (2.6), and the push plate (3) moves up and down in the straight grooves (2.6); positioning bosses (2.7) are arranged on two end faces of the shell (2); mounting holes a (2.4) are formed in two end faces of the shell (2) and used for mounting the torsion spring guide rods (10); fixing holes (2.5) are formed in two end faces of the shell (2) and are respectively used for fixing a first short torsion arm (7.3) of the torsion spring A (7) and a second short torsion arm (9.3) of the torsion spring B (9); threaded holes (2.1) are formed in the two end faces of the shell (2) and used for connecting and fixing the screws (5);

the two end sides of the push plate (3) are respectively provided with a left slide block (3.2) and a right slide block (3.1) which are in mirror symmetry, the outer end faces of the left slide block (3.2) and the right slide block (3.1) are respectively provided with an end face antifriction groove (3.11), the front sides are respectively provided with a front antifriction groove (3.10), the rear sides are respectively provided with a lock groove a (3.9) and a sliding groove a (3.17), and the transition position is transited by a chamfer angle a (3.8) and a guide circle (3.12); an arc (3.15) is designed in the middle of the bottom end of the push plate (3), and the dustproof door (8.3) slides around the arc (3.15) when being opened or closed; a boss (3.3) is designed in the middle of the top end of the push plate (3), the butt joint end of the optical backplane connector pushes the push plate (3) to move downwards by propping against the boss (3.3), and chamfers b (3.16) are arranged on two sides of the boss (3.3); avoidance grooves (3.7) are respectively formed at two ends of the boss (3.3) to avoid interference with the shell (2); the middle part of the front side of the boss (3.3) is provided with a high plane (3.5) and a low plane (3.4) which are in smooth transition through an inclined plane (3.6), and a pulling plate (8.1) of the dustproof door closing piece (8) is positioned on a space between the low plane (3.4) and the high plane (3.5) after the dustproof door closing piece (8) is opened; a movement space groove (3.13) is designed in the middle of the rear side of the boss (3.3), the movement space groove (3.13) and a bottom arc (3.15) are in smooth transition through a transition inclined plane (3.14), and a connecting plate (8.5) and a speed regulating rod (8.4) in the dustproof door closing part (8) move up and down in the movement space groove (3.13);

the seal plate A (1) and the seal plate B (4) are in mirror symmetry structures; the inner sides of the sealing plate A (1) and the sealing plate B (4) are respectively provided with a first positioning hole (1.1) and a second positioning hole (4.1) which are used for being matched with a positioning boss (2.7) on the shell (2); the inner sides of the sealing plate A (1) and the sealing plate B (4) are respectively provided with a first sliding groove (1.6) and a second sliding groove (4.6) which are used for being matched with a left sliding block and a right sliding block in the push plate (3) so as to position the push plate (3); a first locking groove (1.2) and a second locking groove (4.2) are correspondingly arranged on one side of the first sliding groove (1.6) and one side of the second sliding groove (4.6), and the first locking groove (1.2) and the second locking groove (4.2) and a locking groove a (3.9) on the push plate (3) form a mechanical locking structure together for locking and unlocking the position of the speed regulating rod (8.4); the inner sides of the sealing plate A (1) and the sealing plate B (4) are respectively provided with a first groove (1.3) and a second groove (4.4) which are respectively used as torsion arm movement spaces of a torsion spring A (7) and a torsion spring B (9); the inner sides of the sealing plate A (1) and the sealing plate B (4) are respectively provided with a first mounting groove (1.5) and a second mounting groove (4.5) which are respectively used as mounting spaces of a torsion spring A (7) and a torsion spring B (9); the inner sides of the sealing plate A (1) and the sealing plate B (4) are respectively provided with a first mounting hole (1.4) and a second mounting hole (4.3) which are respectively used for mounting the torsion spring guide rod (10); the upper and lower parts of shrouding A (1) and shrouding B (4) are equipped with first screw hole (1.7) and second screw hole (4.7) respectively, are used for the connection of screw (5) is fixed.

2. The dust door of claim 1, wherein: the two ends of the pulling plate (8.1) are symmetrically provided with semicircular grooves (8.2) after being bent; a long cylinder (8.14) is arranged in the middle of the speed adjusting rod (8.4) and is used for being matched with the connecting plate (8.5); both ends are equipped with short cylinder (8.13), be used for with locked groove a (3.9) and shrouding A (1) on push pedal (3), first locked groove (1.2) and second locked groove (4.2) cooperation on shrouding B (4), the diameter of long cylinder (8.14) is less than the diameter of short cylinder (8.13), smooth and sly transition is passed through at speed governing pole (8.4) both ends through chamfer (8.12).

3. The dust door of claim 2, wherein: the self-adaptive sleeve (6) is provided with a round rod with an annular groove (6.2), and the annular groove (6.2) is matched with a semi-circular groove (8.2) on the pull plate (8.1) to limit the self-adaptive sleeve (6) to move axially along the self-adaptive sleeve (6) relative to the pull plate (8.1); a torsion spring hole (6.4) is designed in the center of the self-adaptive sleeve (6), and the torsion spring hole (6.4) is respectively matched with a first long torsion arm (7.1) of the corresponding torsion spring A (7) and a second long torsion arm (9.1) of the corresponding torsion spring B (9); the left end part of the self-adaptive sleeve (6) is provided with a fillet a (6.1) for transition, and the right side of the self-adaptive sleeve is provided with a cylindrical surface (6.3).

4. The dust door of claim 3, wherein: torsional spring guide arm (10) comprise big cylinder (10.2) and small circle cylinder (10.1), insert small circle cylinder (10.1) in mounting hole a (2.4) on casing (2), the hole of torsional spring A (7) and torsional spring B (9) with correspond big cylinder (10.2) cooperate.