CN218599292U - Dovetail card and device - Google Patents

Abstract

The utility model discloses a forked tail card and device, which comprises an upper portion and a lower portion, the draw-in groove upper cover and the draw-in groove lower cover of concatenation down, be provided with the space that is used for holding forked tail buckle spring bolt in the draw-in groove upper cover, the centre of forked tail buckle spring bolt is provided with the buckle pivot, the both sides of buckle pivot are fixed and are covered under the draw-in groove, slide the draw-in groove upper cover internal fixation between the unlocking key and have the spring bolt spring of vertical setting, the one end of spring bolt spring is fixed at the inslot that corresponds in the draw-in groove upper cover, the other one end of spring bolt spring supports in the left buckle spring bolt top of buckle pivot, the draw-in groove lower cover is gone up to open has the through-hole with forked tail buckle spring bolt matched with, when the spring bolt spring is under natural state, the through-hole that the lower extreme of forked tail buckle spring bolt passed under the draw-in groove is covered is evaginated in the draw-in groove lower cover, the terminal surface is provided with forked tail seat matched with dovetail slot matched with dovetail card hole.

Description

Dovetail card and device

Technical Field

The utility model belongs to the technical field of locking structure, a forked tail card and device is related to.

Background

Among the prior art, night-time vision device all has the application in military use or civilian field, if in outdoor use, can fix night-time vision device on the helmet usually, has still liberated both hands when facilitating the use like this, so just so need night-time vision device can be fast, convenient dismantle on the support, so need one can make things convenient for the card and convenient card and the device of dismantling.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a dovetail card and device.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a dovetail card and device, which comprises an upper cover and a lower cover of draw-in groove, the draw-in groove upper cover and the draw-in groove of concatenation down, be provided with the space that is used for holding dovetail buckle spring bolt in the draw-in groove upper cover, the centre of dovetail buckle spring bolt is provided with the buckle pivot, the both sides of buckle pivot are fixed and are covered under the draw-in groove, slide and unlock the draw-in groove upper cover internal fixation between the key has the spring bolt spring of vertical setting, the inslot that corresponds in the draw-in groove upper cover is fixed to the one end of spring bolt spring, the other one end of spring bolt spring supports in the left dovetail buckle spring bolt top of buckle pivot, open under the draw-in groove has with dovetail buckle spring bolt matched with through-hole, when the spring bolt spring is under the natural state, the lower extreme of dovetail buckle spring bolt passes behind the through-hole that covers under the draw-in groove, the terminal surface is provided with dovetail base matched with dovetail buckle spring bolt hole under the draw-in groove, it has with dovetail buckle spring bolt matched with card hole to open on the dovetail.

Further, be provided with the draw-in groove unlocking key in the draw-in groove upper cover on forked tail buckle spring bolt right side, the draw-in groove unlocking key cooperatees with forked tail buckle spring bolt, be provided with the recess that is used for holding the draw-in groove unlocking key in the draw-in groove upper cover, the draw-in groove upper cover is run through on the right side of this recess, through draw-in groove unblock spring coupling between draw-in groove unlocking key and its recess, the one end of draw-in groove unblock spring is fixed in its recess that corresponds, one end is fixed on the left side terminal surface of draw-in groove unlocking key in addition, promote the draw-in groove unlocking key, the card can promote forked tail buckle spring bolt downswing to the unlocking key.

Furthermore, one side of the slot unlocking key facing the dovetail buckle lock tongue is an inclined plane, and one side of the corresponding dovetail buckle lock tongue facing the slot unlocking key is an inclined plane.

Furthermore, the lower end face of the clamping groove unlocking key is provided with a limiting clamping groove, a clamping groove limiting block matched with the limiting clamping groove is fixed on the upper end face of the clamping groove lower cover, the upper end of the clamping groove limiting block is arranged into an L-shaped structure with the opening facing right, and under the elastic action of a clamping groove unlocking spring, the inner wall of the right side of the limiting clamping groove is abutted to the end face of the left side of the clamping groove limiting block in a natural state.

The beneficial effects of the utility model reside in that:

the utility model discloses simple structure, the card is with convenient, and it is also convenient to dismantle, dismouting, application scope extensively that can be quick.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a perspective view of a night vision device holder;

FIG. 2 is a perspective view of a rear view of a night vision device mount;

FIG. 3 is a perspective view of the night vision device after explosion of the bracket;

fig. 4 is an exploded view of the deadbolt assembly;

fig. 5 is a structural schematic diagram of a limit bolt extending out for a longer time;

fig. 6 is a schematic structural view of the extended longer check bolt after retraction;

FIG. 7 is a schematic view of a limit latch with a relatively short extension;

FIG. 8 isbase:Sub>A cross-sectional view taken at A-A of FIG. 7;

FIG. 9 is a schematic perspective view of the back of the locking tab;

FIG. 10 is a schematic view of the up-down adjusting device;

FIG. 11 is a schematic view of the up-down adjusting device after explosion;

FIG. 12 is a cross-sectional view of the slider as it can slide;

FIG. 13 is a cross-sectional view of the slide being locked;

FIG. 14 is a schematic view of the flipped down structure of the flipping mechanism;

FIG. 15 is a schematic view of the flip-up configuration of the flipping mechanism;

FIG. 16 is an axial cross-sectional view of the rotary knob in its natural state;

FIG. 17 is an axial cross-sectional view of the rotary button after it has been depressed;

FIG. 18 is a front view of the fine adjustment limit plate with the fine adjustment knob removed;

FIG. 19 is a perspective view of the trim knob after explosion;

FIG. 20 is a perspective view of another angle of the trim knob after explosion;

FIG. 21 is a schematic view of the structure of the leveling device;

FIG. 22 is a schematic view of the structure of the back side of the leveling device;

FIG. 23 is an exploded view of the leveling device;

FIG. 24 is a longitudinal cross-sectional view of the leveling device assembled with the dovetail block;

FIG. 25 is a longitudinal cross-sectional view of the horizontal adjustment device after being assembled with the dovetail base and the slot unlock key is unlocked;

fig. 26 is a schematic structural view of the leveling device.

Description of the reference numerals:

100. a latch bolt arrangement; 101. a slide base; 1011. a first fixed shaft; 1012. a control rod sliding shaft; 1013. a tab sliding shaft; 102. a limit bolt; 1021. a spring slot; 1022. a limiting hook; 103. a position-clamping control rod; 1031. an inclined oblong hole; 1032. a long round hole; 1033. a cylindrical bore; 105. a limit spring bolt spring; 106. a clamping adjusting sheet; 1061. pushing the plate; 1062. the long round holes of the adjusting sheet; 1063. a first regulating groove; 1064. a second adjustment groove; 1065. a limiting spherical groove; 107. a ball bearing; 200. an up-down adjusting device; 201. a cover plate; 2011. a chute; 2012. an installation table; 202. a limiting sheet; 203. a rotating base; 2031. mounting a bracket; 2032. a U-shaped clamping groove; 204. sliding the knob nut; 2041. a slider; 205. a sliding knob; 2051. a disc; 2052. rotating the handle; 206. a front baffle plate; 207. a rear baffle plate; 300. a turning device; 301. a shaft sleeve; 3011. a long hole; 3012. finely adjusting the limiting plate; 3013. fine-tuning the long round hole; 302. a rotary button; 303. a rotary button spring; 304. a pin; 305. a rotating shaft limiting seat; 3051. an adjustment hole; 3052. clamping holes; 306. finely adjusting a knob; 3061. an eccentric wheel; 307. a fixing screw; 400. a leveling device; 401. a double-track rack; 4011. a rack; 402. a clamping groove upper cover; 4021. an unlocking key groove; 403. a clamping groove lower cover; 4031. a dovetail groove; 404. sliding the unlocking key; 4041. saw teeth; 4042. anti-skid lines; 405. a sliding unlocking spring; 406. a dovetail buckle tongue; 4061. a rotating shaft is buckled; 407. a latch bolt spring; 408. a card slot unlocking key; 4081. a limiting clamping groove; 409. a slot unlocking spring; 410. a slot limiting block; 411. a dovetail seat.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 26, a night vision device bracket includes a latch unit 100 for fixedly mounting on a helmet, an up-down adjusting unit 200 fixed above the latch unit 100, a turn-over unit 300 fixedly connected to a lower end of the up-down adjusting unit 200, a level adjusting unit 400 fixed to the turn-over unit 300, and a lower end of the level adjusting unit 400 fixedly connected to an upper end of a night vision device.

The locking bolt device 100 comprises a sliding base 101, a limiting space for accommodating a limiting locking bolt 102 is formed in the front part above the sliding base 101, the limiting space is matched with the limiting locking bolt 102, and the limiting locking bolt 102 can move back and forth in the limiting space. Open on the slide base 101 preceding terminal surface of spacing space both sides and have U type groove forward, also open forward U type groove on the preceding terminal surface of spacing spring bolt 102, screens control lever 103 inlays in U type inslot, and the design in U type groove is for holding screens control lever 103, and the both ends of screens control lever 103 are located the outside of slide base 101.

An inclined long circular hole 1031 is formed in the middle of the clamping control rod 103, the first fixing shaft 1011 is located inside the inclined long circular hole 1031, two ends of the first fixing shaft 1011 penetrate through the inclined long circular hole 1031 and then are fixed to the inner walls of the upper portion and the lower portion of the limiting bolt 102, and the first fixing shaft 1011 can slide in the inclined long circular hole 1031. Horizontally extending long holes 1032 are respectively formed in the position-locking control rod 103 on two sides of the inclined long hole 1031, and the extending directions of the left long hole 1032 and the right long hole 1032 are respectively the same as the length direction of the position-locking control rod 103. The left long round hole 1032 and the right long round hole 1032 are respectively provided with a control rod sliding shaft 1012, two ends of the control rod sliding shaft 1012 penetrate through the left long round hole 1032 and then are fixed on the upper end face and the lower end face of the left U-shaped groove, and two ends of the control rod sliding shaft 1012 penetrate through the right long round hole 1032 and then are respectively fixed on the upper end face and the lower end face of the left U-shaped groove. The control rod sliding shafts 1012 can slide in the corresponding elongated holes 1032, for convenience of fixation, two ends of the elongated holes 1032 on the left side and the elongated holes 1032 on the right side are respectively provided with cylindrical holes 1033 for clamping the control rod sliding shafts 1012, the hole diameter is the same as that of the control rod sliding shafts 1012, and the width of the hole of the elongated hole 1032 is slightly smaller than the diameter of the control rod sliding shaft 1012, so that the control rod sliding shafts 1012 are prevented from sliding.

Because the inclined oblong hole 1031 is inclined, when the clamping control rod 103 moves left and right, the position of the first fixed shaft 1011 in the inclined oblong hole 1031 can be different by pushing the clamping control rod 103 left and right, the inclination angle and the length of the inclined oblong hole 1031 are set according to requirements, the limiting bolt 102 is retracted when the clamping control rod 103 is pushed to one side of the inclined oblong hole 1031, unlocking is achieved, and when the clamping control rod 103 is pushed to the other side of the inclined oblong hole 1031, the limiting bolt 102 extends out, and locking is achieved.

One side of the lower end of the limit bolt 102 is longer than the upper end, and functions as a bolt for matching with a matched lock catch.

The rear end of the limit bolt 102 is provided with a spring groove 1021 for accommodating a limit bolt spring 105, one end of the limit bolt spring 105 extends into the spring groove 1021 to abut against the groove bottom of the spring groove 1021, and the other end of the bolt spring 105 extends out of the spring groove 1021 and abuts against the side wall of the limit space of the sliding base 101. A limit hook 1022 extends from the rear end of the limit latch 102, and the limit hook 1022 is hooked on the adjusting slot of the position-limiting adjusting piece 106.

The position-locking adjusting sheet 106 is located at the upper rear part of the sliding base 101, the left and right sides of the position-locking adjusting sheet 106 are push plates 1061 integrated with the position-locking adjusting sheet 106, and the middle part of the position-locking adjusting sheet 106 is hollow, mainly for reducing weight. The left side and the right side of the clamping position adjusting sheet 106 are provided with symmetrical adjusting sheet long round holes 1062 in the horizontal direction, adjusting sheet sliding shafts 1013 fixed on a sliding base are arranged in the adjusting sheet long round holes 1062, and the clamping position adjusting sheet 106 can reciprocate left and right. The adjusting grooves on the position-limiting adjusting sheet 106 comprise two adjusting grooves, a first adjusting groove 1063 and a second adjusting groove 1064 are formed in the position-limiting adjusting sheet 106 matched with the position-limiting hook 1022, the first adjusting groove 1063 and the second adjusting groove 1064 are adjacently arranged, the depth of the first adjusting groove 1063 is different from that of the second adjusting groove 1064, and the distance from the bottom of the first adjusting groove 1063 to the position-limiting control rod 103 is smaller than that from the bottom of the second adjusting groove 1064 to the position-limiting control rod 103. When the limit hook 1022 is located in the first adjustment groove 1063 and the limit bolt 102 is in the locked state, the length of the limit bolt 102 extending to the outside of the slide base 101 is longer than the length of the limit bolt 102 extending to the outside of the slide base 101 when the limit hook 1022 is located in the second adjustment groove 1064.

Therefore, the position-limiting locking tongue 102 is actually locked more firmly when the position-limiting adjusting piece 106 is used for adjusting the extending length of the position-limiting locking tongue 102, and the extending length of the position-limiting locking tongue 102 is long. When the extension length of the limiting bolt 102 is short, locking is not so tight, and after the night vision device is knocked down, the bolt is easily unlocked, so that the damage to a user caused by external force impacting on the night vision device is avoided.

In order to prevent the position-adjusting tab 106 from sliding at any time, a damping ring is disposed between the position-adjusting tab 106 and the sliding base 101, so that the position-adjusting tab 106 can be adjusted without sliding at any time. Meanwhile, in order to support the position-limiting adjusting piece 106 and increase the position-limiting effect on the position-limiting adjusting piece 106, a pair of parallel-arranged position-limiting spherical grooves 1065 are arranged at the bottom end of the position-limiting adjusting piece 106, ball grooves are arranged at corresponding positions on the sliding base 101, balls 107 are placed in the ball grooves, the balls 107 are located on the elastic pieces, and the lower ends of the balls 107 are embedded in the position-limiting spherical grooves 1065. Thus, by pushing the position-regulating tab 106 to the left, the ball 107 is located in the right-side spherical position-limiting groove 1065, and by pushing the position-regulating tab 106 to the right, the ball 107 is located in the left-side spherical position-limiting groove 1065.

The up-down adjusting device 200 is fixed above the sliding base 101, and the limit bolt 102 and the position-limiting adjusting sheet 106 are positioned between the sliding base 101 and the up-down adjusting device 200.

The up-down adjusting device 200 comprises a cover plate 201, a sliding groove 2011 is formed in the middle of the cover plate 201 along the length direction of the cover plate 201, an installation platform 2012 integrated with the cover plate 201 is respectively arranged in the middle of the left side and the right side of the sliding groove 2011, and the table top of the installation platform 2012 is higher than the upper end face of the cover plate 201. The cover plate 201 is fixed with the limiting sheet 202 matched with the mounting table 2012, the vertical distance between the opposite planes of the two limiting sheets 202 is smaller than the width of the sliding groove 2011, and the end face of the outer side of the limiting sheet 202 in the transverse direction protrudes out of the outer side face of the mounting table 2012.

The rotary base 203 is located the top of apron 201, and the mounting hole that has slip knob nut 204 to pass is opened at the middle part of rotary base 203, and slip knob nut 204 is the cylinder structure, is provided with integrative spacing step on the middle part body of slip knob nut 204, and spacing step is located the below of rotary base 203, and the upper end of slip knob nut 204 passes behind the mounting hole through sliding knob 205 on the fix with screw. The slide knob 205 includes a disk 2051 and a rotary handle 2052 extending from one side of the disk 2051, and the middle of the disk 2051 is fixed to the middle of the slide knob nut 204 by a screw. The left and right sides of the rotating base 203 are respectively provided with an installation bracket 2031 which protrudes upwards from the rotating base 203 and is integrated with the rotating base, the installation bracket 2031 is used for installing a night vision device, and the sliding knob 205 can rotate back and forth between the two installation brackets 2031.

A spring is arranged between the sliding knob 205 and the rotating base 203.

A pair of U-shaped slots 2032 with opposite openings are formed in the left and right sides of the lower end surface of the rotary base 203, and the U-shaped slots 2032 are just clamped outside the corresponding limiting pieces 202, so that the rotary base 203 can slide along the limiting pieces 202 in a reciprocating manner. A front blocking piece 206 and a rear blocking piece 207 are respectively fixed at the front end and the rear end of the rotating base 203, and the front blocking piece 206 and the rear blocking piece 207 are used for preventing the rotating base 203 from slipping off the limiting piece 202.

The lower end face of the sliding knob nut 204 is provided with a rotating shaft protruding from the lower end face, the rotating shaft and the sliding knob nut 204 are integrally arranged, the diameter of the rotating shaft is slightly smaller than the transverse distance between the two limiting pieces 202, the lower end of the rotating shaft is fixedly connected with a sliding block 2041, the sliding block 2041 is of a rectangular structure, the front end face and the rear end face of the sliding block 2041 are respectively arc-shaped end faces, the size of the sliding block 2041 in the width direction is slightly smaller than the distance between the two limiting pieces 202, and the size of the sliding block 2041 in the length direction is slightly larger than the width of the sliding groove 2011.

The lower end of the cover plate 201 is fixed to the slide base 101 of the latch bolt assembly 100.

The turnover device 300 comprises a rotary base 203 of the up-down adjusting device 200, a pair of mounting brackets 2031 extend upwards from the side surface of the rotary base 203, symmetrical mounting holes are formed in the mounting brackets 2031, the free end of the shaft sleeve 301 penetrates through the mounting holes from the outer side, the free end of the rotary button 302 penetrates through the other mounting hole from the outer side and then extends into the shaft sleeve 301, the rotary button 302 and the shaft sleeve 301 are coaxial, the rotary button 302 comprises a button and a rotating shaft at the side part of the button, the rotating shaft of the rotary button 302 extends into the shaft sleeve 301, a rotary button spring 303 is mounted between the bottom of the rotating shaft of the rotary button 302 and the bottom of the shaft sleeve 301, and the rotary button spring 303 is in a compressed state. The rotary button 302 is fixed with the shaft sleeve 301 through the pin 304, a threaded hole matched with the pin 304 is formed in a rotating shaft of the rotary button 302, a long hole 3011 is formed in a position, matched with the pin 304, of the shaft sleeve 301, in a natural state, under the elastic force of the rotary button spring 303, the pin 304 is located on the left side of the long hole 3011, and the pin 304 can be pushed to the right side of the long hole 3011 by pressing the rotary button 302.

The outside cover of axle sleeve 301 has the spacing seat of pivot 305, the bottom of the spacing seat of pivot 305 is fixed with the night-time vision device mount, the spacing seat of pivot 305 and the position of pin 304 complex are opened on its circumference wall has circumferential regulation hole 3051, it has the card hole 3052 with regulation hole 3051 intercommunication to open on the spacing seat of pivot 305 at the both ends of regulation hole 3051, the position of two card holes 3052 satisfies that the night-time vision device fixing base is in night-time vision device user state and night-time vision device upset state. The length of the fastening hole 3052 is the same as the length of the long hole 3011, and in a fixed state, the pin 304 is located in one of the fastening holes 3052, the pin 304 slides into the adjusting hole 3051 by pressing the rotary button 302, and at this time, the rotating shaft limiting seat 305 can be rotated, and the rotating shaft limiting seat 305 can slide, so that the pin 304 rotates from one fastening hole 3052 to the other fastening hole 3052, thereby turning the night vision device fixing frame from one state to the other state.

The axle sleeve 301 and the mounting hole of the mounting bracket 2031 are limited by a fine adjustment limiting plate 3012, the fine adjustment limiting plate 3012 is located on the axle sleeve 301 outside the bracket and is integrally arranged with the axle sleeve 301, the fine adjustment limiting plate 3012 is similar to an elliptical structure, the axle sleeve 301 is arranged at one end of the fine adjustment limiting plate 3012, a fine adjustment long circular hole 3013 is arranged at the other end of the fine adjustment limiting plate 3012, an eccentric wheel 3061 is arranged in the fine adjustment long circular hole 3013, a rotating shaft of the eccentric wheel 3061 is fixed on the mounting bracket 2031, the outer side of the eccentric wheel 3061 is fixed on the fine adjustment knob 306, a fixing screw 307 passes through the fine adjustment knob 306 and is fixed with the mounting bracket 2031, then the fixing screw 307 is the rotating shaft of the eccentric wheel 3061, the eccentric wheel 3061 rotates along with the rotation of the eccentric wheel 3061 by rotating the fine adjustment knob 306, the rotation of the eccentric wheel 3061 realizes the swinging of the fine adjustment limiting seat of the fine adjustment limiting plate 3012, thereby realizing the fine adjustment of the rotating shaft, the fine adjustment of the limiting seat 305 of the night vision device carries out the angle fine adjustment, and the use of the user is more comfortable.

The horizontal adjusting device 400 comprises a double-rail rack 401 with a U-shaped structure, and the opposite side walls of the open end of the double-rail rack 401 are provided with an integrated bulge, and the bulge is used for being fixed at the position corresponding to the outer circumference of the rotating shaft limiting seat 305 and limiting. Racks 4011 are respectively arranged on the opposite inner walls of the double-rail racks 401, the double-rail racks 401 are clamped between the clamping groove upper cover 402 and the clamping groove lower cover 403, clamping grooves convenient for the two racks 4011 of the double-rail racks 401 to penetrate through are formed in the clamping groove upper cover 402, and the two racks 4011 of the double-rail racks 401 penetrate through the clamping groove upper cover 402 and can slide in the clamping groove upper cover 402 in a reciprocating mode. The left side and the right side of the card slot upper cover 402 are provided with unlocking key grooves 4021 which are symmetrical and used for accommodating the sliding unlocking keys 404, and the outer parts of the unlocking key grooves 4021 penetrate through the card slot upper cover 402. The slide unlocking key 404 is a U-shaped structure, the slide unlocking key 404 is buckled on the rack on the corresponding side, that is, the rack 4011 is located in the U-shaped groove of the slide unlocking key 404, and the width of the U-shaped groove of the slide unlocking key 404 is greater than that of the rack 4011. The sliding unlocking key 404 and the side wall corresponding to the rack 4011 are provided with sawteeth 4041 matched with the rack 4011, the inner side of the sliding unlocking key 404 is connected with the unlocking key groove 4021 through a sliding unlocking spring 405, the sliding unlocking spring 405 is in a compressed state, one end of the sliding unlocking spring 405 is fixed on the side wall of the unlocking key groove 4021, and the other end of the sliding unlocking spring 405 is fixed on the side wall corresponding to the sliding unlocking key 404. Thus, in a natural state, the saw teeth 4041 of the slide unlocking key 404 are locked on the rack, the movement of the card slot upper cover 402 is limited, and when the slide unlocking key 404 is pressed, the saw teeth 4041 of the slide unlocking key 404 are released from the limit with the rack, the card slot upper cover 402 can move on the double-rail rack 401.

The outer side wall of the sliding unlocking key 404 is provided with an anti-slip thread 4042, and in a natural state, the outer side wall of the sliding unlocking key 404 protrudes out of the outer side wall of the corresponding card slot upper cover 402. The height of the slide unlocking key 404 is the same as the height of the unlocking key groove 4021, and the two are in clearance fit.

Be provided with the space that is used for holding forked tail buckle spring bolt 406 in the draw-in groove upper cover 402 between two slip unlocking keys 404, the centre of forked tail buckle spring bolt 406 is provided with buckle pivot 4061, forked tail buckle spring bolt 406 can be around the swing of buckle pivot 4061, the both sides of buckle pivot 4061 are fixed on draw-in groove lower cover 403, draw-in groove upper cover 402 internal fixation between the slip unlocking key 404 has the spring bolt spring 407 of vertical setting, the inslot that corresponds in draw-in groove upper cover 402 is fixed to the one end of spring bolt spring 407, the other one end of spring bolt spring 407 supports the left forked tail buckle spring bolt 406 top at buckle pivot 4061.

A clamping groove unlocking key 408 is arranged in the clamping groove upper cover 402 on the right side of the dovetail buckle locking tongue 406, the clamping groove unlocking key 408 is matched with the dovetail buckle locking tongue 406, a groove used for containing the clamping groove unlocking key 408 is arranged in the clamping groove upper cover 402, the right side of the groove penetrates through the clamping groove upper cover 402, the clamping groove unlocking key 408 is connected with the groove through a clamping groove unlocking spring 409, one end of the clamping groove unlocking spring 409 is fixed in the corresponding groove, and the other end of the clamping groove unlocking spring 409 is fixed on the left side end face of the clamping groove unlocking key 408.

Draw-in groove unlocking key 408 is the inclined plane towards one side of forked tail buckle spring bolt 406, and corresponding forked tail buckle spring bolt 406 is the inclined plane towards one side of draw-in groove unlocking key 408, and when spring bolt spring 407 was located natural state, the inclined plane of forked tail buckle spring bolt 406 corresponds with the inclined plane of draw-in groove unlocking key 408, and convenient like this is pressing draw-in groove unlocking key 408 time, and draw-in groove unlocking key 408 promotes forked tail buckle spring bolt 406 swing and flattens, realizes the unblock state.

In order to limit the slot unlocking key 408, a limiting slot 4081 is arranged on the lower end face of the slot unlocking key 408, a slot limiting block 410 matched with the limiting slot 4081 is fixed on the upper end face of the slot lower cover 403, and the upper end of the slot limiting block 410 is arranged in an L-shaped structure with a right opening, so that the sliding range of the slot unlocking key 408 is guaranteed, and under the natural state, under the elastic action of a slot unlocking spring 409, the inner wall of the right side of the limiting slot 4081 abuts against the end face of the left side of the slot limiting block 410.

A through hole corresponding to the dovetail buckle latch 406 is formed in the corresponding card slot lower cover 403, and under the action of the latch spring 407, the left side of the dovetail buckle latch 406 in a natural state penetrates through the through hole of the card slot lower cover 403 and then protrudes out of the card slot lower cover 403.

A dovetail groove is formed in the side portion of the through hole in the lower end face of the clamping groove lower cover 403, the dovetail seat 411 is matched with the dovetail groove of the clamping groove lower cover 403, and a clamping hole matched with the dovetail buckle bolt 406 is formed in the dovetail seat 411.

The utility model discloses a theory of operation:

the length of the limit bolt 102 is adjusted, the bracket is fixed on a helmet through the bolt device 100, the locking and unlocking of the limit bolt 102 can be controlled by shifting the clamping control rod 103 left and right, and the extension length of the limit bolt 102 in the locking state can be adjusted by shifting the clamping adjusting sheet 106 left and right.

When the cover plate 201 slides to a desired position, the slide knob 205 is rotated to the other side, and at this time, the slide block 2041 is clamped in the slide groove 2011, and the rotary base 203 and the cover plate 201 are locked and fixed.

When the night vision device is used, the rotating button 302 is pressed, the rotating shaft limiting seat 305 is turned to a required position, and the angle of the night vision device can be finely adjusted by rotating the fine adjustment knob 306.

The slide unlocking key 404 is pressed to slide the night vision device on the double-track rack 401, and the slide unlocking key 404 is released after the night vision device slides to a required position.

Therefore, the adjustment of the up-down and turning angles, the front position and the rear position of the night vision device is realized.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. A dovetail card and device characterized in that: the dovetail groove locking mechanism comprises an upper clamping groove cover (402) and a lower clamping groove cover (403) which are spliced up and down, a space for accommodating a dovetail buckle locking tongue (406) is arranged in the upper clamping groove cover (402), a buckle rotating shaft (4061) is arranged in the middle of the dovetail buckle locking tongue (406), two sides of the buckle rotating shaft (4061) are fixed on the lower clamping groove cover (403), a vertically-arranged locking tongue spring (407) is fixed in the upper clamping groove cover (402) between sliding unlocking keys (404), one end of the locking tongue spring (407) is fixed in a corresponding groove in the upper clamping groove cover (402), the other end of the locking tongue spring (407) is abutted to the upper side of the dovetail buckle locking tongue (406) on the left side of the buckle rotating shaft (4061), a through hole matched with the dovetail buckle locking tongue (406) is formed in the lower clamping groove cover (403), when the locking tongue spring (407) is in a natural state, the lower end of the locking tongue (406) penetrates through the dovetail through hole in the lower clamping groove cover (403) and protrudes out of the lower clamping groove cover (403), a dovetail groove is provided with a dovetail groove tail seat (411) matched with a dovetail groove, and a locking tongue hole (411) is formed in the clamping groove.

2. The dovetail card and apparatus of claim 1, wherein: be provided with draw-in groove unlocking key (408) in draw-in groove upper cover (402) on forked tail buckle spring bolt (406) right side, draw-in groove unlocking key (408) cooperatees with forked tail buckle spring bolt (406), be provided with the recess that is used for holding draw-in groove unlocking key (408) in draw-in groove upper cover (402), draw-in groove upper cover (402) is run through on the right side of this recess, draw-in groove unlocking key (408) is connected through draw-in groove unlocking spring (409) rather than between the recess, the one end of draw-in groove unlocking spring (409) is fixed in its recess that corresponds, one end is fixed on the left side terminal surface of draw-in groove unlocking key (408) in addition, promote draw-in groove unlocking key (408), it can promote forked tail buckle spring bolt (406) down swing to block to the unlocking key.

3. The dovetail card and apparatus of claim 2, wherein: one side of the card slot unlocking key (408) facing the dovetail buckle lock tongue (406) is an inclined plane, and one side of the corresponding dovetail buckle lock tongue (406) facing the card slot unlocking key (408) is an inclined plane.

4. The dovetail card and apparatus of claim 2, wherein: the lower terminal surface of draw-in groove unblock key (408) is provided with spacing draw-in groove (4081), is fixed with on the up end of draw-in groove lower cover (403) with spacing draw-in groove (4081) matched with draw-in groove stopper (410), the L type structure that the opening is right is set to the upper end of draw-in groove stopper (410), under the natural state, under the spring action of draw-in groove unblock spring (409), the right side inner wall of spacing draw-in groove (4081) supports on the left side terminal surface of draw-in groove stopper (410).

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