CN211737665U

CN211737665U - Locking mechanism and display screen

Info

Publication number: CN211737665U
Application number: CN201922185944.1U
Authority: CN
Inventors: 万永光; 戴小田; 李锦兴
Original assignee: Shenzhen Zhouming Technology Co Ltd
Current assignee: Shenzhen Zhouming Technology Co Ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-10-23
Anticipated expiration: 2029-12-09

Abstract

The application relates to a locking mechanism and a display screen. The locking mechanism comprises a first base, a handle, a second base, a cover plate, a lock cylinder and a pull rod assembly; the handle is rotatably connected to the first base, and a fastening rod is arranged on the handle; the second base is provided with a first through hole; the cover plate is covered on the second base, and a second through hole is formed in the cover plate; the lock cylinder is positioned between the second base and the cover plate and is arranged on the second base in a sliding mode, the lock cylinder is provided with a buckling groove, the buckling rod is buckled in the buckling groove, the lock cylinder is provided with a first waist-shaped hole, and the lock cylinder is abutted to the first base; the pull rod assembly comprises a sliding rod, a handle and a positioning piece. The handle rotates to different positions and realizes the effect of setting element butt lock core and leaving the lock core, and the unexpected pivoted condition for the slide bar can not appear in the handle to realize that pull rod assembly can reliably lock the lock core, make locking mechanism can reliably inject the relative position between first box unit and the second box unit like this, solved the great problem of concatenation error of box.

Description

Locking mechanism and display screen

Technical Field

The application relates to the technical field of display screen fixed mounting, in particular to a locking mechanism and a display screen.

Background

With the rapid development of the LED display screen industry, more and more display screen products are brought to the market, and the display screen products comprise fixed screens, stage screens, rental screens, television screens and the like. The leasing screen is widely applied by virtue of the characteristics of quick installation, quick disassembly and quick maintenance.

For the convenience of use in activity places such as commodity propaganda and stage lease, the user needs to adjust the relative position of splicing between any two adjacent boxes of the display screen. However, the splicing limiting effect of the box bodies of the traditional display screen is poor, so that the splicing error between two adjacent box bodies is large, and the splicing error of the box bodies is large.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a locking mechanism and a display screen for solving the problem of large splicing error of the box body.

A locking mechanism comprising:

a first base;

the handle is rotatably connected to the first base, and a fastening rod is arranged on the handle;

the second base is provided with a first through hole;

the cover plate is covered on the second base and provided with a second through hole;

the lock cylinder is positioned between the second base and the cover plate, is arranged on the second base in a sliding mode, is provided with a buckling groove, is buckled in the buckling groove, is provided with a first waist-shaped hole, and is abutted to the first base;

the pull rod assembly comprises a sliding rod, a handle and a positioning piece; the sliding rod is respectively arranged in the first through hole, the first waist-shaped hole and the second through hole in a penetrating manner; the handle is rotatably connected to the sliding rod, an oblate protruding abutting part is arranged at the position, adjacent to the sliding rod, of the handle, and the protruding abutting part abuts against one surface, away from the second base, of the cover plate; the positioning piece is used for abutting the lock cylinder when the handle rotates for a preset angle relative to the sliding rod along the forward direction, and the handle leaves the lock cylinder when rotating for a preset angle relative to the sliding rod along the reverse direction.

In one embodiment, the pull rod assembly further includes a first elastic member, the first elastic member is sleeved on the slide rod, and the first elastic member abuts against one side of the second base, which is away from the cover plate, so that when the handle rotates in a reverse direction relative to the slide rod by a preset angle, the slide rod drives the positioning member to leave the lock cylinder under the elastic action of the first elastic member.

In one embodiment, the lock cylinder is provided with a boss, the first base is provided with a supporting groove, and the boss is located in the supporting groove and is abutted against the first base, so that the lock cylinder is better abutted against the first base.

In one embodiment, the first waist-shaped hole is an arc waist-shaped hole, the center of the first waist-shaped hole is located on the axis of the slide rod, and when the slide rod is located in the first waist-shaped hole and slides relative to the lock cylinder, the lock cylinder can simultaneously slide relative to the second base as the slide rod passes through the first through hole.

In one embodiment, the locking mechanism further comprises a second elastic member and a positioning ball;

one surface of the cover plate, which is adjacent to the lock cylinder, is provided with an accommodating groove, the second elastic piece is positioned in the accommodating groove and connected with the cover plate, and the end part of the second elastic piece, which is adjacent to the lock cylinder, is connected with the positioning ball;

the location ball part is located in the holding tank, a plurality of first positioning groove have been seted up on the lock core, and is a plurality of first positioning groove is followed the extending direction interval distribution in first waist shape hole, the location ball is used for the lock core moves butt in corresponding when predetermineeing position for the slide bar in the first positioning groove, the location ball elastic positioning is in corresponding first positioning groove under the effect of second elastic component, makes the lock core deviate from one side of setting element and fixes a position for the apron, because the lock core still fixes a position with the setting element butt when locking to make the lock core fix a position for apron and second base respectively, improved the spacing effect of concatenation of box so better.

In one embodiment, a convex column is formed on one side of the second base, which is adjacent to the cover plate, the first through hole is formed along the axial direction of the convex column, and the convex column is arranged in the first kidney-shaped hole in a penetrating manner and is in sliding connection with the lock cylinder, so that the lock cylinder is arranged on the second base in a sliding manner.

In one embodiment, a guide column is further formed on one side, adjacent to the cover plate, of the second base, a second kidney-shaped hole is further formed in the lock cylinder, the extending direction of the second kidney-shaped hole is parallel to the extending direction of the first kidney-shaped hole, the guide column is located in the second kidney-shaped hole and is in sliding connection with the lock cylinder, and the guide column plays a role in sliding guide, so that the lock cylinder can slide more stably relative to the second base.

In one embodiment, a butting groove communicated with the first through hole is formed in one side, away from the cover plate, of the second base, and the first elastic piece is located in the butting groove and butted with the second base, so that the first elastic piece is reliably butted with the second base.

In one embodiment, a limiting portion is formed at an end of the sliding rod away from the handle, the diameter of the limiting portion is larger than that of the first through hole, an end of the first elastic member away from the second base abuts against the limiting portion, the sliding rod and the second base are prevented from being separated from each other, and the end of the sliding rod away from the handle is limited on the second base.

In one embodiment, a bare empty groove is further formed in one side, away from the cover plate, of the second base, the bare empty groove is respectively communicated with the abutting groove and the first through hole, the positioning element is located in the bare empty groove, and a part of the positioning element is exposed out of one side, close to the cover plate, of the second base through the bare empty groove, so that the positioning element is abutted to the lock cylinder when the handle rotates relative to the sliding rod in the forward direction by a preset angle; because the naked dead slot has been seted up to the one side that deviates from the apron of second base, make the setting element can locate the one side that deviates from the apron of second base and be close to first elastic component to make locking mechanism's structure compacter.

In one embodiment, a plurality of second positioning grooves are formed in one side, adjacent to the second base, of the lock cylinder, the second positioning grooves are communicated with the first waist-shaped hole, the second positioning grooves are distributed at intervals along the extending direction of the first waist-shaped hole, and the positioning piece is used for being partially located in one of the second positioning grooves when the handle rotates for a preset angle relative to the sliding rod in the forward direction, so that the positioning piece and the lock cylinder are better abutted and positioned, and the positioning effect of the positioning piece is improved.

A display screen comprises a first box body unit, a second box body unit and a locking mechanism, wherein the second box body unit is spliced adjacent to the first box body unit, the locking mechanism is arranged in any one of the above embodiments, a first base is connected with the first box body unit, and a second base is connected with the second box body unit.

According to the locking mechanism and the display screen, the first base can be connected with the first box body unit, the second base can be connected with the second box body unit, the fastening rod is fastened in the fastening groove, and the handle is rotatably connected to the first base; then the handle rotates a preset angle in the reverse direction relative to the sliding rod, so that the handle drives the sliding rod to slide, the sliding rod drives the positioning piece to leave the lock cylinder, and the lock cylinder is in a state of sliding relative to the second base; then, the first box body unit and the second box body unit are relatively rotated, and the first base is connected with the first box body unit, and the second base is connected with the second box body unit, so that the first base and the second base relatively rotate; then, the lock core is pulled to slide to a preset position relative to the second base, so that the lock core can be always abutted against the first base; then, the handle is rotated by a preset angle relative to the sliding rod in the forward direction, so that the handle drives the sliding rod to slide, the positioning piece is abutted against the lock cylinder, and the lock cylinder is locked relative to the second base; finally, the handle is rotated reversely, so that the handle drives the fastening rod to be fastened in the fastening groove, and the first box body unit and the second box body unit are relatively static; because the position that the handle is close to the slide bar is equipped with oblate protruding butt portion, protruding butt portion butt is in the one side that deviates from the second base of apron, rotate to different positions along with the handle like this, the slide bar drives the gliding displacement of setting element and also differs, make the handle rotate to different positions and realize setting element butt lock core and leave the effect of lock core, and the unexpected pivoted situation for the slide bar can not appear in the handle, thereby realize that pull rod assembly can reliably lock the lock core, make locking mechanism can reliably prescribe a limit to the relative position between first box unit and the second box unit like this, the great problem of concatenation error of box has been solved.

Drawings

FIG. 1 is a schematic view of a display screen according to an embodiment;

FIG. 2 is an exploded view of the display screen of FIG. 1;

FIG. 3 is a partial schematic view of another state of the display screen of FIG. 1;

FIG. 4 is a partial schematic view of the display screen of FIG. 1;

FIG. 5 is an exploded view of the display screen of FIG. 4;

FIG. 6 is a schematic view of another viewing angle of the display screen of FIG. 5;

FIG. 7 is a partial schematic view of another state of the display screen of FIG. 4;

FIG. 8 is a schematic view of another viewing angle of the display screen of FIG. 7;

FIG. 9 is a cross-sectional view taken along line A-A of the display screen of FIG. 8;

FIG. 10 is a schematic view of another viewing angle of the display screen of FIG. 4;

FIG. 11 is a cross-sectional view taken along line B-B of the display screen of FIG. 10;

fig. 12 is a schematic diagram of a partial explosion of the display screen of fig. 6.

Detailed Description

To facilitate an understanding of the present application, the locking mechanism and display will be described more fully below with reference to the associated drawings. Preferred embodiments of the locking mechanism and display are shown in the drawings. However, the locking mechanism and display screen may be implemented in many different forms and are not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the locking mechanism and display screen is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and 2, the display screen 10 of an embodiment includes a first case unit 100, a second case unit 200 adjacently spliced to the first case unit 100, and a locking mechanism 300. In the present embodiment, the locking mechanism 300 is connected to the first case unit 100 and the second case unit 200, respectively.

As shown in FIG. 2, in one embodiment, the locking mechanism 300 includes a first base 310, a handle 320, a second base 330, a cover plate 340, a lock cylinder 350, and a lever assembly 360. Referring also to fig. 3, a handle 320 is rotatably coupled to the first base 310, and a fastening rod 322 is provided on the handle 320. In the present embodiment, the handle 320 includes a handle body 321 and a fastening bar 322, and the fastening bar 322 is inserted into the handle body 321. The fastening rod 322 is a U-shaped rod, and the position of the fastening rod 322 inserted into the handle body 321 is adjustable.

As shown in fig. 4 and 6, in one embodiment, the second base 330 has a first through hole 331. The cover plate 340 covers the second base 330, and the cover plate 340 defines a second through hole 342. The second through hole 342 is disposed corresponding to the first through hole 331. In one embodiment, the second base 330 is formed with a mounting post 332, the cover 340 is connected to the mounting post 332, such that the cover 340 covers the second base 330, and a space for accommodating the lock cylinder 350 is formed between the cover 340 and the second base 330. Specifically, the locking mechanism 300 further includes a fixing screw 370, the cover plate 340 is provided with a mounting through hole 343, the mounting post 332 is provided with a threaded hole 332a corresponding to the mounting through hole 343, and the fixing screw 370 is respectively inserted into the mounting through hole 343 and the threaded hole 332a, so that the cover plate 340 is connected with the mounting post 332.

As shown in fig. 5 and 6, in one embodiment, the lock cylinder 350 is located between the second base 330 and the cover plate 340, and the lock cylinder 350 is slidably disposed on the second base 330. The lock core 350 is provided with a fastening slot 352, and the fastening rod 322 is fastened in the fastening slot 352. The lock core 350 further defines a first kidney-shaped aperture 354. The lock cylinder 350 abuts the first base 310.

As shown in FIG. 5, in one embodiment, the pull rod assembly 360 includes a slide bar 362, a handle 364, and a positioning member 366. The sliding rod 362 is respectively arranged in the first through hole 331, the first kidney-shaped hole 354 and the second through hole 342. A handle 364 is pivotally connected to the slide bar 362. A portion of the handle 364 adjacent to the slide bar 362 is provided with an oblate convex abutment 364 a. The protruding abutting portion 364a abuts on a surface of the cover plate 340 facing away from the second base 330. In this embodiment, the protruding abutting portion 364a is an elliptical protruding structure, so that the protruding abutting portion 364a rotates to different angles with respect to the sliding rod 362, and the distances from the positions where the protruding abutting portion 364a abuts against the cover plate 340 to the rotation center of the handle 364 are different, so that the protruding abutting portion 364a and the cover plate 340 have a good self-locking effect in the abutting process, and the handle 364 and the cover plate 340 can reliably abut against each other.

As shown in fig. 4, 5 and 7, in one embodiment, the positioning member 366 is configured to abut the key cylinder 350 when the handle 364 is rotated by a predetermined angle in the forward direction with respect to the sliding bar 362 and to be spaced apart from the key cylinder 350 when the handle 364 is rotated by a predetermined angle in the reverse direction with respect to the sliding bar 362.

As shown in fig. 7 to 9, in particular, when the handle 364 rotates in a reverse direction by a predetermined angle relative to the sliding rod 362, the lever assembly 360 is in a release state, and a distance exists between the positioning member 366 and the key cylinder 350. As shown in fig. 4, 10 and 11, when the handle 364 rotates a predetermined angle relative to the sliding rod 362 in the forward direction, the pull rod assembly 360 is in the locked state, and at this time, the positioning member 366 abuts against a side of the lock core 350 away from the cover plate 340, and the positioning member and the lock core are tightened and fixed, so that the selected angle is locked. In the present embodiment, the preset angle is 90 degrees. In this embodiment, the preset angle may be other angles.

As shown in fig. 1 and 2, in one embodiment, a first base 310 is coupled to the first housing unit 100, and a second base 330 is coupled to the second housing unit 200. In the present embodiment, the first base 310 is fixed to the first case unit 100 by screws, and the second base 330 is fixed to the second case unit 200 by screws. It is understood that in other embodiments, the first base 310 may not only be fixed to the first case unit 100 by screws, but may also be welded to the first case unit 100. Similarly, the second base 330 may be welded to the second case unit 200.

In the locking mechanism 300 and the display screen 10, since the fastening rod 322 is fastened in the fastening slot 352 and the handle 320 is rotatably connected to the first base 310, when the splicing angle of the first box unit 100 and the second box unit 200 needs to be adjusted, the handle 320 is first rotated, so that the handle 320 drives the fastening rod 322 to leave the fastening slot 352; then, the handle 364 rotates in a reverse direction by a preset angle relative to the sliding rod 362, so that the handle 364 drives the sliding rod 362 to slide, the sliding rod 362 drives the positioning piece 366 to leave the lock cylinder 350, and at this time, the lock cylinder 350 is in a state of being capable of sliding relative to the second base 330; then, the first case unit 100 and the second case unit 200 are relatively rotated, and since the first base 310 is connected to the first case unit 100 and the second base 330 is connected to the second case unit 200, the first base 310 and the second base 330 are relatively rotated; then, the lock cylinder 350 is pulled, so that the lock cylinder 350 slides to a preset position relative to the second base 330, and the lock cylinder 350 can be always abutted against the first base 310; then, the handle 364 is rotated by a preset angle in the forward direction relative to the sliding rod 362, so that the handle 364 drives the sliding rod 362 to slide, and the positioning member 366 abuts against the lock cylinder 350, so that the lock cylinder 350 is locked relative to the second base 330; finally, the handle 320 is rotated reversely, so that the handle 320 drives the fastening rod 322 to fasten in the fastening slot 352, and the first box unit 100 and the second box unit 200 are relatively stationary.

Because the part of the handle 364 adjacent to the sliding rod 362 is provided with the oblate convex abutting part 364a, the convex abutting part 364a abuts against one surface of the cover plate 340 departing from the second base 330, and thus the sliding rod 362 drives the positioning piece 366 to slide different displacements along with the rotation of the handle 364 to different positions, so that the handle 364 rotates to different positions to realize the effects that the positioning piece 366 abuts against the lock cylinder 350 and leaves away from the lock cylinder 350, and the handle 364 can not accidentally rotate relative to the sliding rod 362, thereby realizing that the pull rod assembly 360 can reliably lock the lock cylinder 350, so that the locking mechanism 300 can reliably limit the relative position between the first box body unit 100 and the second box body unit 200, and solving the problem of large splicing error of the box bodies.

The locking mechanism is used for splicing the first box body unit and the second box body unit respectively, so that the splicing radian of the box body of the display screen reaches plus or minus 15 degrees, and the first box body unit and the second box body unit can be locked by quickly adjusting the angle. Further, be equipped with on the handle body 321 and prevent the safety mechanism 321a of maloperation to guarantee locking mechanism's safety in utilization performance, improved the spacing defective structure of concatenation of most box concatenation ubiquitous simultaneously, increased about and limit structure around with, reduce box concatenation error greatly. In this embodiment, the locking mechanism is an arc lock.

As shown in fig. 5, in one embodiment, the pull rod assembly 360 further includes a first elastic member 368, the first elastic member 368 is sleeved on the sliding rod 362, and the first elastic member 368 abuts against a side of the second base 330 away from the cover plate 340, so that when the handle 364 rotates in a reverse direction relative to the sliding rod 362 by a predetermined angle, the sliding rod 362 drives the positioning member 366 to leave the lock cylinder 350 under the elastic action of the first elastic member 368, thereby improving the convenience of the locking mechanism 300. In this embodiment, the first elastic member 368 is a coil spring. In other embodiments, the first elastic element 368 may also be an elastic rubber sleeve or other elastic element.

As shown in fig. 6, in order to make the first elastic element 368 reliably abut against the second base 330, in one embodiment, an abutting groove 335 communicating with the first through hole 331 is formed on a side of the second base 330 facing away from the cover 340. The first elastic element 368 is located in the abutting groove 335 and abuts against the second base 330, so that the first elastic element 368 reliably abuts against the second base 330.

As shown in fig. 5 and 6, in order to limit the end of the sliding rod 362 away from the handle 364 to the second base 330, in one embodiment, a limit portion 362a is formed at the end of the sliding rod 362 away from the handle 364. Referring to fig. 11, the diameter of the limiting portion 362a is greater than the diameter of the first through hole 331, and the end of the first elastic element 368 that is away from the second base 330 abuts against the limiting portion 362a, so as to prevent the sliding rod 362 and the second base 330 from being separated from each other, and limit the end of the sliding rod 362 that is away from the handle 364 on the second base 330. In the present embodiment, the limiting portion 362a is used for abutting against the inner wall of the abutting groove 335 when the positioning element 366 abuts against the key cylinder 350.

As shown in fig. 3 and 4, to better abut the lock cylinder 350 with the first base 310, in one embodiment, the lock cylinder 350 is provided with a boss 356. The first base 310 is provided with a supporting groove 312, and the boss 356 is located in the supporting groove 312 and is abutted against the first base 310, so that the lock cylinder 350 is better abutted against the first base 310.

As shown in fig. 5, in one embodiment, the first slotted hole 354 is an arc-shaped slotted hole, and the center of the first slotted hole 354 is located on the axis of the sliding rod 362. When the sliding rod 362 is located in the first kidney-shaped hole 354 and slides relative to the lock cylinder 350, the lock cylinder 350 can simultaneously slide relative to the second base 330 as the sliding rod 362 passes through the first through hole 331.

As shown in fig. 12, in one embodiment, the locking mechanism 300 further comprises a second resilient member 380 and a detent ball 390. The cover plate 340 has a receiving groove 344 formed on a surface thereof adjacent to the key cylinder 350, and the second elastic member 380 is located in the receiving groove 344 and connected to the cover plate 340. The end of the second resilient member 380 adjacent the lock cylinder 350 is connected to a retaining ball 390. In this embodiment, the second elastic member 380 is welded and fixed to the positioning ball 390. In other embodiments, the second elastic member 380 can be fixed to the positioning ball 390 by gluing. In one embodiment, the second elastic member 380 is a coil spring. In other embodiments, the second elastic member 380 can also be an elastic rubber column, and the second elastic member 380 is fixed to the positioning ball 390 by gluing.

Referring also to fig. 5, in one embodiment, the detent ball 390 is partially disposed within the receiving groove 344. The lock core 350 is provided with a plurality of first positioning grooves 355, and the first positioning grooves 355 are distributed at intervals along the extending direction of the first kidney-shaped hole 354. The positioning balls 390 are configured to abut against the corresponding first positioning recess 355 when the lock cylinder 350 moves to a predetermined position relative to the sliding rod 362, so that the positioning balls 390 are elastically positioned in the corresponding first positioning recess 355 under the action of the second elastic member 380, and a side of the lock cylinder 350 facing away from the positioning member 366 is positioned relative to the cover plate 340. Because the lock core 350 is abutted against the positioning piece 366 for positioning when being locked, the lock core 350 is positioned relative to the cover plate 340 and the second base 330 respectively, and the splicing and limiting effect of the box body is improved better.

As shown in fig. 5, in order to slidably dispose the lock cylinder 350 on the second base 330, in one embodiment, a protruding column 333 is formed on one side of the second base 330 adjacent to the cover plate 340, a first through hole 331 is formed along an axial direction of the protruding column 333, and the protruding column 333 is inserted into the first kidney-shaped hole 354 and slidably connected with the lock cylinder 350, so that the lock cylinder 350 is slidably disposed on the second base 330. In the present embodiment, the shape of the protruding column 333 is matched with the shape of the first kidney-shaped hole 354, so that the relative sliding between the second base 330 and the lock cylinder 350 is more stable.

As shown in fig. 5, in order to make the sliding movement of the lock cylinder 350 relative to the second base 330 more smooth, in one embodiment, a guide post 334 is further formed on a side of the second base 330 adjacent to the cover 340. The lock core 350 further defines a second waist-shaped hole 357, and an extending direction of the second waist-shaped hole 357 is parallel to an extending direction of the first waist-shaped hole 354. The guiding column 334 is located in the second waist-shaped hole 357 and slidably connected to the lock cylinder 350, and the guiding column 334 plays a role of sliding guide, so that the lock cylinder 350 slides more smoothly relative to the second base 330. In this embodiment, the second waist-shaped hole 357 is an arc-shaped waist-shaped hole.

As shown in fig. 11, in one embodiment, a bare groove 358 is further opened on a side of the second base 330 facing away from the cover plate 340, and the bare groove 358 is respectively communicated with the abutting groove 335 and the first through hole 331. The positioning member 366 is located in the exposed empty slot 358, and a portion of the positioning member 366 is exposed at a side of the second base 330 adjacent to the cover plate 340 through the exposed empty slot 358, so that the positioning member 366 is configured to abut against the lock core 350 when the handle 364 rotates relative to the sliding rod 362 by a predetermined angle in the forward direction. Because the bare groove 358 is disposed on the side of the second base 330 away from the cover plate 340, the positioning element 366 can be disposed on the side of the second base 330 away from the cover plate 340 and adjacent to the first elastic element 368, so that the locking mechanism 300 is more compact. In the present embodiment, the bare groove 358 is partially opened at two sides of the protruding pillar 333, so that the positioning member 366 can better abut against the lock cylinder 350 when the lock cylinder 350 slides relative to the protruding pillar 333.

As shown in fig. 9, in one embodiment, a plurality of second positioning grooves 359 are formed on a side of the lock cylinder 350 adjacent to the second base 330. The second positioning grooves 359 are all communicated with the first slotted holes 354, the second positioning grooves 359 are distributed at intervals along the extending direction of the first slotted holes 354, and the positioning member 366 is used for being partially positioned in one of the second positioning grooves 359 when the handle 364 rotates relative to the sliding rod 362 by a preset angle in the forward direction, so that the positioning member 366 and the lock cylinder 350 are better abutted and positioned, and the positioning effect of the positioning member 366 is improved. In the present embodiment, the positioning member 366 is a cylindrical structure, and each of the second positioning recesses 359 is adapted to the shape of the positioning member 366.

As shown in fig. 5, in an embodiment, the positioning member 366 is perpendicular to the sliding rod 362, so that the positioning member 366 can better abut against the lock cylinder 350 during the movement of the sliding rod 362. Specifically, the sliding rod 362 is provided with a connecting hole 3622, and the positioning element 366 is inserted into the connecting hole 3622 and connected to the sliding rod 362. In one embodiment, the positioning member 366 is further disposed between two adjacent coils of the first elastic member 368, so that the first elastic member 368 is better positioned on the sliding rod 362.

In one embodiment, the installation principle of the arc lock is as follows: firstly, the lock core of the arc lock and the first base are designed by adopting a concave-convex groove front-back limiting structure, so that the front-back dislocation of the box body is avoided; then, before the arc lock is fixed, the pull rod is rotated by 60 degrees, and the pull rod is opened; finally, the handle can be rotated by pressing the safety switch, and the pull rod is placed in the groove of the lock cylinder.

In one embodiment, the installation principle of the arc lock is as follows: firstly, pressing down a handle; then the safety switch automatically returns to clamp the handle, the lock core is tensioned, and the arc lock is installed; and finally, the lock rod just straightens the lock core and the first base, so that the box body cannot be dislocated from top to bottom.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A locking mechanism, comprising:

a first base;

the second base is provided with a first through hole;

2. The locking mechanism of claim 1, wherein the lever assembly further comprises a first elastic member, the first elastic member is sleeved on the sliding rod, and the first elastic member abuts against a side of the second base facing away from the cover plate.

3. The locking mechanism according to claim 1, wherein the lock cylinder is provided with a boss, the first base is provided with a supporting groove, and the boss is located in the supporting groove and is abutted against the first base.

4. The locking mechanism of claim 1 wherein the first slotted hole is an arcuate slotted hole having a center located on the axis of the slide bar.

5. The locking mechanism of claim 4, further comprising a second resilient member and a detent ball;

the positioning ball part is located in the accommodating groove, a plurality of first positioning grooves are formed in the lock cylinder, the first positioning grooves are distributed at intervals along the extending direction of the first waist-shaped hole, and the positioning balls are used for abutting against the lock cylinder in the corresponding first positioning grooves when the lock cylinder moves to a preset position relative to the sliding rod.

6. The lock mechanism as claimed in claim 1, wherein a protrusion is formed on a side of the second base adjacent to the cover plate, the first through hole is formed along an axial direction of the protrusion, and the protrusion is inserted into the first kidney-shaped hole and slidably connected to the lock cylinder.

7. The locking mechanism according to claim 6, wherein a guide post is further formed on a side of the second base adjacent to the cover plate, a second kidney-shaped hole is further formed in the lock cylinder, an extending direction of the second kidney-shaped hole is parallel to an extending direction of the first kidney-shaped hole, and the guide post is located in the second kidney-shaped hole and is slidably connected with the lock cylinder.

8. The locking mechanism according to claim 2, wherein a butting groove communicated with the first through hole is formed in one side of the second base, which is away from the cover plate, and the first elastic member is located in the butting groove and butts against the second base.

9. The locking mechanism according to claim 8, wherein a limiting part is formed at the end of the sliding rod far away from the handle, the diameter of the limiting part is larger than that of the first through hole, and the end of the first elastic element far away from the second base abuts against the limiting part;

a bare empty groove is further formed in one side, away from the cover plate, of the second base and is respectively communicated with the abutting groove and the first through hole, the positioning element is located in the bare empty groove, and part of the positioning element is exposed out of one side, close to the cover plate, of the second base through the bare empty groove, so that the positioning element is abutted to the lock cylinder when the handle rotates relative to the sliding rod in the forward direction for a preset angle;

the lock core is close to one side of the second base is provided with a plurality of second positioning grooves, the second positioning grooves are communicated with the first kidney-shaped hole, the second positioning grooves are distributed at intervals along the extending direction of the first kidney-shaped hole, and the positioning piece is used for enabling the handle to be partially positioned in one of the second positioning grooves when the handle rotates for a preset angle relative to the sliding rod along the forward direction.

10. A display screen comprising a first housing unit, a second housing unit spliced adjacent to the first housing unit, and the locking mechanism of any one of claims 1 to 9, wherein the first base is attached to the first housing unit and the second base is attached to the second housing unit.