CN217841217U

CN217841217U - LED display screen thread lock device

Info

Publication number: CN217841217U
Application number: CN202220987597.3U
Authority: CN
Inventors: 周桂锋; 张佳
Original assignee: Shenzhen Liantronics Co Ltd
Current assignee: Shenzhen Liantronics Co Ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-11-18
Anticipated expiration: 2032-04-25

Abstract

The utility model provides a LED display screen screw thread lock device, which comprises a first lock body and a second lock body, wherein the first lock body comprises a box body seat, a lock sleeve fixed on the box body seat, a handle movably arranged on the lock sleeve and far away from one end of the box body seat, a lock seat fixed on the handle, and a lock core movably arranged on the lock seat; the second lock body comprises a limiting hole, the lock core comprises a first thread part arranged at one end, close to the lock base, of the lock core and a clamping part arranged at one end, far away from the lock base, of the lock core and matched with the limiting hole, the lock base comprises a second thread part matched with the first thread part, the handle rotates anticlockwise relative to the lock sleeve, the lock base drives the lock core to rotate, extends out of the lock sleeve and penetrates through the box body base, and the second lock body cannot be separated from the lock core after the clamping part passes through the limiting hole; the handle rotates clockwise relative to the lock sleeve, the lock seat drives the lock cylinder to rotate to separate from the second lock body and withdraw the lock cylinder into the lock sleeve.

Description

LED display screen thread lock device

Technical Field

The utility model relates to the technical field, especially, relate to a LED display screen screw thread lock device.

Background

In the LED display screen industry, a plurality of display screens of lease can splice together and constitute a large screen jointly, in actual work, the staff need form the display screen with the quick installation of a plurality of LED box and use for people, and dismantle the display screen of equipment fast after the lease finishes, need use some locks class device at the in-process of equipment display screen, but the complex operation of traditional lock class device closure and unblock is complicated, does not accord with the high-efficient simple demand of lease occasion completely.

In order to solve the problem, a screw lock device for an LED display screen, which is easy and convenient to operate, is required to be designed to lock and unlock the LED display screen quickly and conveniently.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a LED display screen screw thread lock device comes closure and unblock fast conveniently through simple and convenient operation.

The utility model discloses a following technical scheme realizes:

the utility model provides a LED display screen screw lock device, which comprises a first lock body and a second lock body, wherein the first lock body comprises a box body seat, a lock sleeve fixed on the box body seat, a handle movably arranged on the lock sleeve and far away from one end of the box body seat, a lock seat fixed on the handle and a lock core movably arranged on the lock seat; the second lock body comprises a limiting hole, the lock core comprises a first thread part arranged on the lock core and close to one end of the lock base and a clamping part arranged on the lock core and far away from one end of the lock base and matched with the limiting hole, the lock base comprises a second thread part matched with the first thread part, the handle rotates anticlockwise relative to the lock sleeve, the lock base drives the lock core to rotate, extend out of the lock sleeve and penetrate through the box base, and after the clamping part passes through the limiting hole, the second lock body cannot be separated from the lock core; the handle rotates clockwise relative to the lock sleeve, and the lock seat drives the lock cylinder to rotate to separate from the second lock body and withdraw the lock cylinder into the lock sleeve.

Further, the handle comprises a first cylindrical part and an extension part connected to the first cylindrical part, the first lock body is provided with an axis, the lock sleeve, the lock cylinder, the first cylindrical part and the lock seat are coaxially arranged on the axis, and a perpendicular bisector of the extension part is perpendicular to the direction of the axis.

Further, first lock body is still including locating installation axle, the movable mounting of extension in the press piece of installation axle, locating the first mounting groove, the main part of extension are fixed in press piece torque spring, torque spring stretch out the outer one end block of main part in the first mounting groove, press piece including locate one end press the portion and locate another end's elasticity ratchet portion, partly accept of lock sleeve in the first cylinder portion, just the lock sleeve is keeping away from the one end of box seat is equipped with the toothed ring portion, elasticity ratchet portion with toothed ring portion block.

Furthermore, the included angle formed by a connecting line between the central position of the installation shaft in the pressing part and the central position of the pressing part and a connecting line between the central position of the installation shaft in the pressing part and the central position of the elastic ratchet part is less than 90 degrees.

Furthermore, the first thread part protrudes out of the main body of the lock cylinder, and the second thread part is a groove sunken in the inner wall of the lock seat.

Further, the first lock body further comprises a first screw, the lock sleeve is provided with an engaging groove arranged along the circumferential direction, the first cylinder portion comprises a first mounting hole, and the first screw penetrates through the first mounting hole and is partially engaged with the engaging groove, so that the handle can only rotate along the circumferential direction relative to the lock sleeve.

Further, the first lock body further comprises a second screw, the lock sleeve comprises a second mounting hole, the lock cylinder comprises a limiting groove, the second screw penetrates through the second mounting hole and is partially clamped in the limiting groove, the limiting groove comprises an arc-shaped groove and a straight groove, the arc-shaped groove is arranged along the circumferential direction, the straight groove is arranged along the direction parallel to the axis, and the arc-shaped groove is communicated with the straight groove.

Further, the handle includes movable mounting in the body of being in of lock sleeve and be fixed in the lid of being in the body, it includes the second mounting groove to be in the body the extension, the lid include with the relative third mounting groove that sets up of second mounting groove, the one end block of installation axle in the second mounting groove, the other end block in the third mounting groove.

Further, the first lock body further comprises a third screw, the extending portion on the handle body further comprises a third mounting hole, the handle cover further comprises a fourth mounting groove opposite to the third mounting hole, and the third screw penetrates through the third mounting hole and extends into the fourth mounting groove to fix the handle body and the handle cover together.

Further, the lock base comprises a second cylindrical part and an annular part connected with the second cylindrical part, the annular part is fixed on one surface, far away from the box body base, of the first cylindrical part, and the second cylindrical part is contained in the first cylindrical part.

The utility model has the advantages that:

the utility model provides a LED display screen screw lock device, including first lock body and second lock body, first lock body includes the box seat, the lock sleeve, the lock core, handle and lock seat, the lock sleeve is fixed in the box seat, handle movable mounting is kept away from the one end of box seat and can be rotated relatively the lock sleeve on the lock sleeve, the lock seat is fixed in the handle, the lock core is through first screw thread portion movable mounting in the lock seat of taking second screw thread portion, the handle of rotating first lock body can drive the lock seat and rotate relatively the lock sleeve, make the lock core of movable mounting in the lock seat move along the direction of screw thread, the second lock body includes spacing hole, the lock core includes the block portion with spacing hole complex, handle relatively the lock sleeve along anticlockwise rotation, then the lock seat drives the lock core rotation and stretches out the lock sleeve and runs through the box seat, make the block portion rotate to continue to block with the second lock body after rotating through the spacing hole; the handle rotates clockwise relative to the lock sleeve, and the lock seat drives the lock cylinder to rotate to separate from the second lock body and withdraw the lock cylinder into the lock sleeve. The user only needs to rotate the handle to realize locking and unlocking between the first lock body and the second lock body, the operation is simple and convenient, and the situation that the lock cylinder is locked and is inconvenient to unlock can be reduced by utilizing the mode that the lock cylinder is driven by the threads to move.

Drawings

FIG. 1 is an exploded view of the present invention;

fig. 2 is a schematic structural view of the handle of the present invention;

FIG. 3 is a schematic view of the lock core and a second screw of the present invention;

fig. 4 is a schematic structural view of the pressing member of the present invention;

FIG. 5 is a cross-sectional view of the first lock after it is locked;

fig. 6 is a sectional view of the first lock body after unlocking.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth 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.

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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model provides a LED display screen screw thread lock device, which comprises a first lock body and a second lock body, wherein the first lock body comprises a box body seat, a lock sleeve fixed on the box body seat, a handle movably arranged on the lock sleeve and far away from one end of the box body seat, a lock seat fixed on the handle and a lock core movably arranged on the lock seat; the second lock body comprises a limiting hole, the lock core comprises a first thread part arranged at one end, close to the lock seat, of the lock core and a clamping part arranged at one end, far away from the lock seat, of the lock core and matched with the limiting hole, the lock seat comprises a second thread part matched with the first thread part, the handle rotates anticlockwise relative to the lock sleeve, the lock seat drives the lock core to rotate, extends out of the lock sleeve and penetrates through the box body seat, and after the clamping part passes through the limiting hole, the second lock body cannot be separated from the lock core; the handle rotates clockwise relative to the lock sleeve, and the lock seat drives the lock cylinder to rotate to separate from the second lock body and withdraw the lock cylinder into the lock sleeve.

The utility model provides a LED display screen thread lock device, including first lock body and second lock body, first lock body includes the box seat, the lock sleeve, the lock core, handle and lock seat, the lock sleeve is fixed in the box seat, handle movable mounting is in the one end of keeping away from the box seat on the lock sleeve and can rotate relative to the lock sleeve, the lock seat is fixed in the handle, the lock core is through first screw thread portion movable mounting in the lock seat of taking second screw thread portion, the handle of rotating first lock body can drive the lock seat and rotate relative to the lock sleeve, make the lock core of movable mounting in the lock seat move along the direction of screw thread, the second lock body includes spacing hole, the lock core includes the block portion with spacing hole complex, handle relative lock sleeve along anticlockwise rotation, then the lock seat drives the lock core rotation and stretches out the lock sleeve and runs through the box seat, make the block portion continue to rotate to block with the second lock body after rotating through spacing hole; the handle rotates clockwise relative to the lock sleeve, and the lock seat drives the lock cylinder to rotate to separate from the second lock body and withdraw the lock cylinder into the lock sleeve. The user only needs to rotate the handle to realize locking and unlocking between the first lock body and the second lock body, the operation is simple and convenient, and the situation that the lock cylinder is locked and is inconvenient to unlock can be reduced by utilizing the mode that the lock cylinder is driven by the threads to move.

Referring to fig. 1 to 6, the present invention provides a thread lock device for LED display screen, including a first lock body 1 and a second lock body 2, wherein the first lock body 1 includes a box base 11, a lock sleeve 12 fixed on the box base 11, a handle 13 movably mounted on the lock sleeve 12 at an end far from the box base 11, a lock base 14 fixed on the handle 13, and a lock core 15 movably mounted on the lock base 14; the second lock body 2 comprises a limiting hole 20, the lock core 15 comprises a first thread part 151 arranged on one end of the lock core 15 close to the lock base 14 and a clamping part 152 arranged on one end of the lock core 15 far away from the lock base 14 and matched with the limiting hole 20, the lock base 14 comprises a second thread part 141 matched with the first thread part 151, the handle 13 rotates anticlockwise relative to the lock sleeve 12, the lock base 14 drives the lock core 15 to rotate and extend out of the lock sleeve 12 and penetrate through the box base 11, and after the clamping part 152 passes through the limiting hole 20, the second lock body 2 cannot be separated from the lock core 15; the handle 13 is turned clockwise relative to the sleeve 12, and the lock base 14 rotates the lock cylinder 15 away from the second lock body 2 and retracts the lock cylinder 15 into the sleeve 12.

The utility model provides a LED display screen screw lock device, including first lock body 1 and second lock body 2, first lock body 1 includes box base 11, lock sleeve 12, lock core 15, handle 13 and lock base 14, lock sleeve 12 is fixed in box base 11, handle 13 movable mounting is kept away from the one end of box base 11 and can rotate relative lock sleeve 12 on lock sleeve 12, lock base 14 is fixed in handle 13, lock core 15 is through first screw thread portion 151 movable mounting in the lock base 14 of taking second screw thread portion 141, handle 13 of rotating first lock body 1 can drive lock base 14 and rotate relative lock sleeve 12, make movable mounting move in the lock core 15 of lock base 14 along the direction motion of screw thread, second lock body 2 includes spacing hole 20, lock core 15 includes with spacing hole 20 complex block portion 152, handle 13 is along anticlockwise rotation relative lock sleeve 12, then lock base 14 drives lock core 15 and rotates and stretches out lock sleeve 12 and runs through box base 11, make block portion 152 rotate through spacing hole 20 and continue to rotate to follow-on with second lock body 2 block; the handle 13 is rotated clockwise relative to the lock sleeve 12, and the lock base 14 drives the lock cylinder 15 to rotate away from the second lock body 2 and withdraws the lock cylinder 15 into the lock sleeve 12.

The user only needs to rotate the handle 13 to lock and unlock the first lock body 1 and the second lock body 2, and the operation is simple and convenient. The first thread part 151 and the second thread part 141 are matched with each other, so that the movement path of the lock cylinder 15 is determined by the shape of the threads, namely when the handle 13 is turned, the lock holder 14 fixed on the handle 13 is synchronously turned, the first thread part 151 on the lock cylinder 15 moves relative to the second thread part 141, so that the lock cylinder 15 simultaneously presents the rotary motion in the circumferential direction and the linear motion in the axial direction relative to the lock sleeve 12, the mode of driving the lock cylinder 15 to move by the threads is different from the traditional mode of manually pushing out the lock cylinder 15, and the situation that the lock cylinder 15 is difficult to unlock caused by jamming can be reduced.

The engaging portions 152 on the key cylinder 15 are extending bodies oppositely disposed at two ends of the end portion of the key cylinder 15, and a connecting line between the two end portions of the key cylinder 15 extended from the engaging portions 152 is perpendicular to the axial direction of the key cylinder 15. The limiting hole 20 comprises a middle hole and two through holes which are respectively arranged at two ends of the middle hole and communicated with the middle hole, when the lock cylinder 15 rotates and is close to the limiting hole 20, two end parts of the clamping part 152 can penetrate through the limiting hole 20 along the two through holes to enter the second lock body 2, and along with the continuous rotation of the lock cylinder 15, two end parts of the clamping part 152 rotate to be separated from the two through holes and close to the middle hole, so that the lock cylinder 15 is clamped in the second lock body 2.

In one embodiment of the present application, clockwise refers to: in fig. 1, the lock cylinder 15 is viewed in a direction perpendicular to the case base 11 in a circumferential direction as a reference, and for convenience of description, the present application will be described based on this embodiment.

In other embodiments, the clockwise direction may be set to the opposite direction of the previous embodiment.

Further, the handle 13 includes a first cylindrical portion 131 and an extending portion 132 connected to the first cylindrical portion 131, the first lock body 1 has an axis 10, the lock sleeve 12, the lock cylinder 15, the first cylindrical portion 131 and the lock base 14 are coaxially disposed on the axis 10, and a perpendicular bisector of the extending portion 132 is perpendicular to the direction of the axis 10.

In the present embodiment, the handle 13 includes a first cylindrical portion 131 and an extending portion 132 connected thereto, the lock sleeve 12, the lock cylinder 15, the first cylindrical portion 131 and the lock base 14 are all coaxially disposed on an axis 10, the extending portion 132 is formed by extending the outer surface of the first cylindrical portion 131 in a single direction along a perpendicular direction of the axis 10, and the extending portion 132 is symmetrically disposed on the first cylindrical portion 131 with the perpendicular direction as a perpendicular bisector.

Further, the first lock body 1 further includes a mounting shaft 133 disposed on the extension portion 132, a pressing member 134 movably mounted on the mounting shaft 133, a first mounting groove 135 disposed on the extension portion 132, and a torsion spring 136 fixed to the pressing member 134, wherein one end of the torsion spring 136 extending out of the main body is engaged with the first mounting groove 135, the pressing member 134 includes a pressing portion 1341 disposed at one end and an elastic ratchet portion 1342 disposed at the other end, a portion of the lock sleeve 12 is accommodated in the first cylindrical portion 131, a toothed ring portion 121 is disposed at one end of the lock sleeve 12 away from the box base 11, and the elastic ratchet portion 1342 is engaged with the toothed ring portion 121.

Further, a connecting line between the center position of the mounting shaft 133 in the pressing member 134 and the center position of the pressing portion 1341, and a connecting line between the center position of the mounting shaft 133 in the pressing member 134 and the center position of the elastic ratchet portion 1342 form an included angle of 90 ° or less.

In this embodiment, the pressing member 134 is movably mounted on the mounting shaft 133 of the extension portion 132, one end of the pressing member 134 is provided with an elastic ratchet portion 1342, and the other end is provided with a pressing portion 1341, so that the pressing member 134 can rotate relative to the mounting shaft 133 by pressing the pressing portion 1341 with a hand to adjust the position of the elastic ratchet portion 1342. The main body of the torsion spring 136 is mounted on the mounting shaft 133 and fixed to the pressing member 134, one end of the torsion spring 136 extending out of the main body is engaged with the first mounting groove 135, the lock sleeve 12 is provided with a toothed ring portion 121 at an end close to the end far away from the box body seat 11, and the elastic ratchet portion 1342 is engaged with the toothed ring portion 121, so that the handle 13, the lock seat 14 and the lock cylinder 15 are prevented from being rotated by gravity and other small forces, thereby ensuring the stability of locking.

The elastic ratchet portion 1342 has elasticity, and enables the handle 13 to move clockwise relative to the ring gear 121 in one direction only when the handle is subjected to manual force. Specifically, the method comprises the following steps: when the handle 13 is rotated clockwise, the part of the elastic ratchet wheel part 1342 contacted with the teeth of the toothed ring part 121 generates certain elastic deformation, so that the handle 13 can rotate relative to the lock sleeve 12, and is re-clamped with the toothed ring part 121 after the handle 13 stops rotating; when the handle 13 is rotated counterclockwise, the degree of elastic deformation between the elastic ratchet portion 1342 and the toothed ring portion 121 is not enough to resist the resistance therebetween, so that the handle 13 is difficult to rotate, at this time, the pressing portion 1341 is pressed by a hand to rotate the pressing piece 134 to separate the elastic ratchet portion 1342 from the toothed ring portion 121, so that the handle 13 can be rotated counterclockwise, thereby realizing the locking between the first lock body 1 and the second lock body 2, and when the pressing portion 1341 is not pressed, the torsion spring 136 generates the reset elastic force to make the elastic ratchet portion 1342 re-engage with the toothed ring portion 121.

In this embodiment, the central position of the mounting shaft 133 in the pressing member 134 is a common end point, the central position of the pressing portion 1341 and the central position of the elastic ratchet portion 1342 are end points of two sides, and an angle formed by the two end points is less than or equal to 90 °, so that the pressing direction of the pressing portion 1341 pressed by a user and the movement direction of the elastic ratchet portion 1342 after being stressed tend to be the same, which is convenient for the user to use, and the two ends of the pressing member 134 can be folded as much as possible by the arrangement, so as to reduce the space occupied by the pressing member 134.

Further, the first thread portion 151 protrudes from the main body of the key cylinder 15, and the second thread portion 141 is a groove recessed in the inner wall of the key seat 14.

In this embodiment, the first threaded portion 151 protrudes from the main body of the key cylinder 15, and the second threaded portion 141 is a section of a groove on the inner wall of the lock base 14.

It will be appreciated that in alternative embodiments, the first threaded portion 151 may be provided as a recess and the second threaded portion 141 may be provided as a projection, and the corresponding configuration of the lock cylinder 15 and the lock base 14 may be changed, for example, a threaded cylinder may be provided in the lock base 14, the cylinder may include an external thread that is a projection, the lock cylinder 15 may be provided with an internal groove that mates with the cylinder, and the internal groove may include an internal thread that is a recess.

Further, the first lock body 1 further includes a first screw 16, the lock sleeve 12 is provided with an engaging groove 122 arranged along the circumferential direction, the first cylindrical portion 131 includes a first mounting hole 1310, and the first screw 16 passes through the first mounting hole 1310 and is partially engaged with the engaging groove 122, so that the handle 13 can rotate only along the circumferential direction relative to the lock sleeve 12.

In this embodiment, a circle of engaging grooves 122 having a width similar to the outer diameter of the first screw 16 is formed in the circumferential direction of the lock sleeve 12, and the first screw 16 passes through the first mounting hole 1310 of the first cylindrical portion 131 and is partially engaged with the engaging grooves 122, so that the handle 13 is movably mounted on the lock sleeve 12 and can rotate relative to the lock sleeve 12, and the handle 13 is restrained and loses the freedom of movement other than the circumferential rotation.

Further, the first lock body 1 further includes a second screw 17, the lock sleeve 12 includes a second mounting hole 123, the lock cylinder 15 includes a limiting groove 153, the second screw 17 passes through the second mounting hole 123 and is partially engaged with the limiting groove 153, the limiting groove 153 includes an arc-shaped groove 1532 arranged along the circumferential direction and a straight groove 1531 arranged along the direction parallel to the axis 10, and the arc-shaped groove 1532 is communicated with the straight groove 1531.

In this embodiment, the second screw 17 is fixed to the second mounting hole 123, and a part of the second screw 17 is engaged with the limiting groove 153, the limiting groove 153 includes an arc-shaped groove 1532 disposed along the circumferential direction and a straight groove 1531 disposed along a direction parallel to the axis 10, one end of the arc-shaped groove 1532 is communicated with one end of the straight groove 1531, when the lock core 15 rotates, the second screw 17 seems to move in the limiting groove 153 (actually, the second screw 17 is fixed all the time), and when the second screw 17 is at the end point of the path of the arc-shaped groove 1532 or the straight groove 1531, the movement is limited.

Further, the handle 13 includes a handle body 13a movably mounted to the lock sleeve 12 and a handle cover 13b fixed to the handle body 13a, the extending portion 132 of the handle body 13a includes a second mounting groove 13a1, the handle cover 13b includes a third mounting groove 13b1 disposed opposite to the second mounting groove 13a1, one end of the mounting shaft 133 is engaged with the second mounting groove 13a1, and the other end is engaged with the third mounting groove 13b1.

In this embodiment, the handle 13 is composed of the handle body 13a and the handle cover 13b which are opposite to each other, the handle body 13a is movably mounted on the lock sleeve 12, the extending portion 132 of the handle body 13a is provided with a second mounting groove 13a1, the handle cover 13b comprises a third mounting groove 13b1 which is opposite to the second mounting groove 13a1, and when the handle body 13a and the handle cover 13b are assembled together, two ends of the mounting shaft 133 are respectively fixed on the second mounting groove 13a1 and the third mounting groove 13b1; when the cap 13b is detached from the handle body 13a, the mounting shaft 133 can be detached in the axial direction.

Further, the first lock body 1 further includes a third screw 18, the extension portion 132 of the handle body 13a further includes a third mounting hole 13a2, the handle cover 13b further includes a fourth mounting groove 13b2 opposite to the third mounting hole 13a2, and the third screw 18 passes through the third mounting hole 13a2 and extends into the fourth mounting groove 13b2 to fix the handle body 13a and the handle cover 13b together.

In this embodiment, the extension portion 132 of the handle body 13a is provided with two third mounting holes 13a2, the handle cover 13b is provided with two opposite fourth mounting grooves 13b2, and two third screws 18 respectively pass through the two third mounting holes 13a2 and extend into the two fourth mounting grooves 13b2, so as to fix the handle body 13a and the handle cover 13b together.

Further, the lock seat 14 includes a second cylindrical portion 142 and an annular portion 143 connected to the second cylindrical portion 142, the annular portion 143 is fixed to a surface of the first cylindrical portion 131 away from the box seat 11, and the second cylindrical portion 142 is accommodated in the first cylindrical portion 131.

In this embodiment, the lock seat 14 includes a second cylindrical portion 142 and an annular portion 143 connected to each other, the annular portion 143 is fixed on a surface of the first cylindrical portion 131 away from the box seat 11, and an outer wall of the second cylindrical portion 142 is attached to an inner wall of the first cylindrical portion 131.

Of course, the present invention can also have other various embodiments, and based on the embodiments, those skilled in the art can obtain other embodiments without any creative work, and all of them belong to the protection scope of the present invention.

Claims

1. A thread lock device for an LED display screen comprises a first lock body and a second lock body, and is characterized in that the first lock body comprises a box body seat, a lock sleeve fixed on the box body seat, a handle movably arranged on one end of the lock sleeve far away from the box body seat, a lock seat fixed on the handle and a lock cylinder movably arranged on the lock seat; the second lock body comprises a limiting hole, the lock core comprises a first thread part arranged on one end of the lock core close to the lock base and a clamping part arranged on one end of the lock core far away from the lock base and matched with the limiting hole, the lock base comprises a second thread part matched with the first thread part,

the handle rotates anticlockwise relative to the lock sleeve, the lock seat drives the lock cylinder to rotate, extend out of the lock sleeve and penetrate through the box body seat, and the second lock body cannot be separated from the lock cylinder after the clamping part passes through the limiting hole; the handle rotates clockwise relative to the lock sleeve, and the lock seat drives the lock cylinder to rotate to be separated from the second lock body and withdraw the lock cylinder into the lock sleeve.

2. The LED display screen thread lock device as claimed in claim 1, wherein the handle comprises a first cylindrical portion and an extension portion connected to the first cylindrical portion, the first lock body has an axis, the lock sleeve, the lock cylinder, the first cylindrical portion and the lock base are coaxially disposed on the axis, and a perpendicular bisector of the extension portion is perpendicular to the axis.

3. The threaded lock device for the LED display screen according to claim 2, wherein the first lock body further comprises an installation shaft disposed on the extension portion, a pressing member movably mounted on the installation shaft, a first mounting groove disposed on the extension portion, and a main body fixed to the pressing member torsion spring, wherein one end of the torsion spring extending out of the main body is engaged with the first mounting groove, the pressing member comprises a pressing portion disposed at one end and an elastic ratchet portion disposed at the other end, a part of the lock sleeve is contained in the first cylindrical portion, and a toothed ring portion is disposed at one end of the lock sleeve far away from the box body seat, and the elastic ratchet portion is engaged with the toothed ring portion.

4. The thread lock device for LED display screens of claim 3, wherein the angle between the line connecting the center position of the mounting shaft in the pressing member with the center position of the pressing member and the line connecting the center position of the mounting shaft in the pressing member with the center position of the elastic ratchet portion is 90 ° or less.

5. The threaded lock device for the LED display screen as claimed in claim 1, wherein the first threaded portion protrudes from the main body of the lock cylinder, and the second threaded portion is a groove recessed in an inner wall of the lock seat.

6. The LED display screen thread lock device as claimed in claim 2, wherein the first lock body further comprises a first screw, the lock sleeve is provided with a locking groove arranged along a circumferential direction, the first cylindrical portion comprises a first mounting hole, and the first screw passes through the first mounting hole and is partially locked in the locking groove, so that the handle can only rotate along the circumferential direction relative to the lock sleeve.

7. The thread lock device for LED display screens of claim 3, wherein the first lock body further comprises a second screw, the lock sleeve comprises a second mounting hole, the lock cylinder comprises a limiting groove, the second screw passes through the second mounting hole and is partially engaged with the limiting groove, the limiting groove comprises an arc-shaped groove arranged along a circumferential direction and a straight groove arranged along a direction parallel to the axis, and the arc-shaped groove is communicated with the straight groove.

8. The LED display screen thread lock device according to claim 3, wherein the handle comprises a handle body movably mounted on the lock sleeve and a handle cover fixed on the handle body, the extending portion on the handle body comprises a second mounting groove, the handle cover comprises a third mounting groove arranged opposite to the second mounting groove, one end of the mounting shaft is engaged with the second mounting groove, and the other end of the mounting shaft is engaged with the third mounting groove.

9. The LED display screen thread lock device of claim 8, wherein the first lock body further comprises a third screw, the extension portion of the handle body further comprises a third mounting hole, the handle cover further comprises a fourth mounting groove disposed opposite to the third mounting hole, and the third screw passes through the third mounting hole and extends into the fourth mounting groove to fix the handle body and the handle cover together.

10. The LED display screen thread lock device as claimed in claim 2, wherein the lock base comprises a second cylindrical portion and an annular portion connected to the second cylindrical portion, the annular portion is fixed to a surface of the first cylindrical portion away from the box base, and the second cylindrical portion is received in the first cylindrical portion.