CN219536489U - Lock assembly, connecting lock and LED display screen - Google Patents

Abstract

The utility model provides a lock assembly, a connecting lock and an LED display screen, wherein the LED display screen comprises at least two display units and the connecting lock, the connecting lock comprises a lock assembly and a lock seat, the lock assembly is arranged on one display unit of two adjacent display units, and the lock seat is arranged on the other display unit of the two adjacent display units. The lock assembly comprises a lock rod, a handle and a supporting structure, wherein one axial end of the lock rod is movably arranged on the display unit, the supporting structure is fixed on the display unit, the other axial end of the lock rod is supported on the supporting structure, and the handle is connected with the other axial end of the lock rod; the handle can be driven to move so as to drive the lock rod to axially slide on the display unit to be inserted into the lock seat of the adjacent display unit, and after the handle slides for a preset stroke, the handle can be driven to rotate so as to drive one axial end of the lock rod to rotationally lock in the lock seat. The utility model improves the smoothness of axial sliding of the lock rod, reduces the difficulty of operating the handle by a user and improves the use experience of the user.

Description

Lock assembly, connecting lock and LED display screen

Technical Field

The utility model belongs to the technical field of display screens, and particularly relates to a lock assembly, a connection lock and an LED display screen.

Background

The LED display screen has wide application in the industries of stage, business, advertisement, exhibition and the like due to excellent display effect and applicability. A typical LED display screen is composed of smaller display units, and when the display area requirement is large, a large number of display units are required to be assembled.

In the related art, two adjacent display units are assembled by adopting a lock assembly and a lock seat, the lock assembly and the lock seat are respectively arranged on the two adjacent display units, the lock assembly comprises a handle and a lock rod, the lock rod is movably arranged on a box body of the display units, the handle is connected with the lock rod, and the handle is used for driving the lock rod to be inserted into the lock seat and driving the lock rod to rotate relative to the lock seat so as to enable the lock rod and the lock seat to be locked with each other. The handle and the lock rod are heavy, and the support position of the lock rod in the display unit is limited, so that when the lock rod is spliced, a user is required to drive the handle at a position, which is close to the axis of the lock rod, of the handle to counteract the influence of the gravity of the lock assembly on the axial sliding of the lock rod, otherwise, the lock rod is blocked and cannot slide smoothly towards the lock seat due to the fact that the acting force is not parallel to the axis of the lock rod, and the operation of the user is laborious and difficult.

Disclosure of Invention

The embodiment of the utility model aims to provide a lock assembly, a connecting lock and an LED display screen, so as to solve the technical problem that fingers are required to be placed at the axial center of a lock rod to offset the influence of the gravity of the lock assembly on the sliding of the lock rod when the lock assembly is used due to the gravity of the lock assembly in the prior art.

In order to achieve the above object, according to a first aspect of the present utility model, a technical scheme is as follows: the lock assembly is used for being matched with a lock seat to lock and unlock two adjacent display units, and comprises a lock rod, a handle and a supporting structure, wherein one axial end of the lock rod is movably arranged on the display units, the supporting structure is fixedly arranged on the display units, the other axial end of the lock rod is supported on the supporting structure, and the handle is connected with the other axial end of the lock rod; the handle can be driven to move so as to drive the lock rod to axially slide on the display unit to be inserted into the lock seat adjacent to the display unit, and the handle can be driven to rotate after a sliding preset stroke so as to drive one axial end of the lock rod to rotationally lock in the lock seat.

In one possible design, the support structure comprises a support member arranged to be fixed to the display unit and a guide member arranged coaxially with the locking bar;

one axial end of the guide piece is arranged on the support piece in a sliding manner, and the other axial end of the guide piece is fixedly connected with the lock rod; or one axial end of the guide piece is fixed on the support piece, and the other axial end of the guide piece is in sliding connection with the lock rod.

In one possible design, the lock assembly further comprises a lock sleeve arranged to be slidably arranged in the display unit, the lock sleeve being arranged outside the lock rod and being in threaded connection with the lock rod; the lock sleeve is stopped on the display unit after being driven by the lock rod to axially slide for a preset stroke, and the lock rod is driven by the handle to rotate relative to the lock sleeve.

In one possible design, the lock assembly further includes locking members, grooves are formed on the surface of the lock sleeve and distributed along the axial direction of the locking members, the locking members are arranged to be mounted on the display unit, and one ends of the locking members can be respectively limited and abutted in the grooves.

In one possible design, the lock assembly further comprises a locking structure connected between the lock sleeve and the handle for locking the handle after the handle is rotated by a preset angle.

In one possible design, the locking structure includes a driving member, a torsion spring and a ratchet wheel, the ratchet wheel is fixed on the lock sleeve, the driving member is rotatably arranged on the handle, and the torsion spring is connected between the driving member and the handle to tightly support the driving member on the ratchet wheel.

In one possible design, the lock assembly further includes a first reset member connected between the lock sleeve and the display unit, the first reset member being for axial reset of the lock sleeve and the lock rod.

In one possible design, the lock assembly further comprises a mounting plate, a guide rod, a guide cylinder and a second reset piece, wherein the mounting plate is connected with the lock sleeve, one end of the guide rod is mounted on the mounting plate, the guide cylinder is fixed on the display unit, and the other end of the guide rod is in guide fit with the guide cylinder; the second reset piece is sleeved on the guide rod and is abutted between the guide cylinder and the mounting plate.

The lock assembly provided by the utility model has the beneficial effects that: according to the lock assembly provided by the embodiment of the utility model, the support structure is arranged on the display unit, and then the other axial end of the lock rod is supported on the support structure, so that the two axial ends of the lock rod can be supported on the display unit, the axial levelness of the lock rod is improved, the blocking of the sliding of the lock rod due to gravity is counteracted, the smoothness of the axial sliding of the lock rod is improved, a user can drive the lock rod to axially slide only by pushing the lock rod axially at the tail end of the handle, the operation is convenient and labor-saving, and the use experience of the user is improved.

In a second aspect, the present utility model provides a connection lock, including the lock assembly and a lock base, where the lock assembly is disposed on one display unit of two adjacent display units, the lock base is disposed on the other display unit of the two adjacent display units, the lock assembly can be locked into the lock base to lock the two adjacent display units, and the lock assembly can be disengaged from the lock base to unlock the two adjacent display units.

The connecting lock provided by the utility model has the beneficial effects that: according to the connecting lock provided by the embodiment of the utility model, through the arrangement of the lock assembly, the locking and unlocking actions of the connecting lock are smooth, the operation is convenient and labor-saving, and the use experience of a user is improved.

In a third aspect, the utility model provides an LED display screen, which includes at least two display units and the connection lock, where the connection lock is disposed between two adjacent display units to lock and unlock the two adjacent display units.

The LED display screen provided by the utility model has the beneficial effects that: according to the LED display screen provided by the embodiment of the utility model, the connection lock is arranged, so that the splicing of at least two display units can be realized rapidly, and the LED display screen with a large display area is formed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a state of a lock lever and a lock seat separated in an LED display screen according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of a state of a lock rod inserted into a lock seat in an LED display screen according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of a state of the LED display screen according to the embodiment of the present utility model after the lock lever is rotated 90 degrees;

FIG. 4 is an enlarged schematic view of a portion of the lock assembly of FIG. 1;

FIG. 5 is a schematic perspective view of the lock assembly of FIG. 4;

FIG. 6 is an exploded view of the lock assembly of FIG. 4;

FIG. 7 is a schematic cross-sectional view of A-A of FIG. 2;

FIG. 8 is an enlarged schematic view of a portion B of FIG. 7;

FIG. 9 is a schematic longitudinal cross-sectional view of the connector lock and case of FIG. 2;

FIG. 10 is an enlarged schematic view of a portion C of FIG. 9;

fig. 11 is a schematic view of the structure of fig. 5 with the second housing removed.

Wherein, each reference sign in the figure:

100. a lock assembly; 110. a lock lever; 111. a locking part; 120. a lock sleeve; 121. a groove; 122. a chute; 130. a first reset member; 140. a handle; 141. a first housing; 1411. a sleeve portion; 1412. an extension; 1413. a mounting cylinder; 142. a second housing; 150. a locking structure; 151. a ratchet wheel; 1511. tooth slots; 152. a torsion spring; 153. a driving member; 160. a support structure; 161. a support; 1611. a jack; 162. a guide member; 1621. a conical step; 170. a guide assembly; 171. a mounting plate; 172. a guide rod; 173. a second reset member; 174. a guide cylinder; 180. a locking member; 200. a lock base; 210. a first groove; 220. a second groove; 300. a box body.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In a first aspect, referring to fig. 1 to 3, the present utility model provides an LED display screen, which includes at least two display units and a connection lock, wherein the connection lock is disposed between two adjacent display units to lock and unlock the two adjacent display units, so as to splice the at least two display units to form an LED display screen with a larger display area.

In a second aspect, referring to fig. 1 to 3, the present utility model provides a connection lock, where the connection lock includes a lock assembly 100 and a lock base 200, the lock assembly 100 is disposed on one of two adjacent display units, the lock base 200 is disposed on the other of the two adjacent display units, the lock assembly 100 can be locked into the lock base 200 to lock the two adjacent display units, and the lock assembly 100 can be disengaged from the lock base 200 to unlock the two adjacent display units.

Specifically, the LED display unit includes a case 300, and the lock assembly 100 and the lock base 200 are respectively disposed on the case 300. In addition, in order to facilitate the splicing of the plurality of cases 300, the lock assembly 100 and the lock base 200 are generally disposed on opposite sides of each case 300, so that the plurality of cases 300 can be sequentially spliced along a direction.

In a third aspect, the present utility model also provides a lock assembly 100. Referring to fig. 4-10, a lock assembly 100 according to an embodiment of the present utility model will now be described. The lock assembly 100 is used to cooperate with the lock base 200 to lock and unlock two adjacent display units.

The lock assembly 100 comprises a lock rod 110, a handle 140 and a supporting structure 160, wherein one axial end of the lock rod 110 is movably arranged on the display unit, the supporting structure 160 is fixed on the display unit, the other axial end of the lock rod 110 is supported on the supporting structure 160, and the handle 140 is connected with the other axial end of the lock rod 110; the handle 140 can be driven to move to drive the locking bar 110 to axially slide on the display unit to be inserted into the lock seat 200 of an adjacent display unit, and the handle 140 can be driven to rotate after a sliding preset stroke to drive one axial end of the locking bar 110 to rotationally lock in the lock seat 200.

Specifically, the lock rod 110, the support structure 160 and the handle 140 are all arranged on the box 300 of one of the two adjacent display units, the box 300 is provided with a mounting hole which is penetrated along the axial direction of the lock rod, and one axial end of the lock rod 110 is arranged through the mounting hole; the lock base 200 is provided on the case 300 of the other display unit of the adjacent two display units. When two adjacent display units are required to be locked, the handle 140 is manually pushed along the axial direction of the lock rod 110, so that the lock rod 110 is axially inserted into the lock seat 200, after the lock rod 110 is inserted into the lock seat 200 for a preset length, the handle 140 is manually rotated for a preset angle, and the handle 140 drives the lock rod 110 to rotate for a preset angle and then is locked with the lock seat 200, so that the locking of the two adjacent display units is realized; when unlocking is required, the handle 140 is manually rotated reversely, the handle 140 drives the lock lever 110 to rotate reversely to unlock the lock base 200, and then the handle 140 is manually moved to axially reset the handle 140 and the lock lever 110, or the first reset piece 130 drives the lock lever 110 and the handle 140 to reset.

Specifically, referring to fig. 5 and 7, a locking portion 111 is formed at one axial end of the lock rod 110, a first slot 210 and a second slot 220 are formed on the lock base 200, the locking portion 111 is axially inserted into the second slot 220 through the first slot 210, and after the locking portion 111 rotates in the second slot 220 by a predetermined angle, the locking portion 111 stops on a step where the second slot 220 is connected with the first slot 210, so as to lock the lock rod 110 and the lock base 200.

The lock assembly 100 of the present embodiment is constructed such that the support structure 160 is provided on the display unit, and then the other axial end of the lock lever 110 is supported on the support structure 160 by 5, while the one axial end of the lock lever 110 is supported

On the display element to make the axial both ends of locking lever 110 all can be supported, improved the axial levelness of locking lever 110, offset locking lever 110 because gravity and slip is blocked, improved the smooth and easy nature of locking lever 110 axial slip, make the user only need at the terminal axial promotion locking lever 110 of handle 140 can drive locking lever 110 axial slip, convenient operation and laborsaving, improve user's use experience.

0 in one embodiment, referring to fig. 5, 6, 8 and 10, the support structure 160 includes a support

The support 161 and the guide 162, the support 161 is fixed on the display unit, one axial end of the guide 162 is slidingly arranged on the support 161, and the other axial end of the guide 162 is fixedly connected with the lock rod 110.

Specifically, the supporting member 161 is substantially in a rectangular block shape, the supporting member 161 is vertically mounted on the case 300 of the display unit 5, the top end of the supporting member 161 is provided with an insertion hole 1611, and one axial end of the guiding member 162 slides

Is movably inserted into the jack 1611. When the lock lever 110 is axially slid by the handle 140, the guide 162 slides along with the lock lever 110, and one axial end of the guide 162 slides in the insertion hole 1611; when the lock lever 110 is rotated by the handle 140, the guide 162 rotates following one end of the lock lever 110, and one axial end of the guide 162 rotates in the insertion hole 1611.

0 alternatively, the guide 162 is disposed coaxially with the lock bar 110, and the guide 162 is inserted into the receptacle 1611

In cooperation, the guide piece 162 and the jack 1611 are coaxially arranged, and then the lock rod 110 and the jack 1611 are coaxially arranged, so that axial guiding of the lock rod 110 can be realized through axial guiding of the guide piece 162 by the jack 1611, and the stability and the accuracy of axial sliding of the lock rod 110 are ensured, so that the axial sliding of the lock rod 110 is smooth.

Alternatively, the guide member 162 is disposed perpendicular to the support member 161, that is, the support member 161 is disposed perpendicular to the lock lever 1105, so that the support member 161 has higher support strength and better support stability to the lock lever 110.

Optionally, the support 161 is fastened to the case 300 by a fastener lock. It will be appreciated that in other embodiments of the present utility model, the support 161 may be provided on the case 300 by welding, interference fit, or integral connection.

In the utility model, the support of the other axial end of the lock rod 110 is realized by the mutual cooperation of the support member 161 and the guide member 162, and the guide member 162 is inserted into the lock rod 110 to realize the connection with the lock rod 110, so that the support of the lock rod 110 in motion can be realized on the premise of not generating structural interference with the handle 140. It will be appreciated that in the embodiment of the present utility model, the axial length of the lock lever 110 may be extended, and then the other axial end of the lock lever 110 may be directly supported on the support 161, without being limited only.

In another embodiment of the present utility model, one axial end of the guide 162 may be fixed to the support 161, and the other axial end of the guide 162 is slidably inserted into the lock lever 110. When the lock lever 110 slides, the guide 162 is fixed and the guide 162 and the lock lever 110 slide each other; when the lock lever 110 rotates, the lock lever 110 slides with respect to the guide 162, thereby achieving the supporting effect of the guide 162 on the lock lever 110.

In one embodiment, referring to fig. 6, 8 and 10, the lock assembly 100 further includes a lock sleeve 120, wherein the lock sleeve 120 is slidably disposed in the display unit, specifically, slidably inserted into the mounting hole of the case 300; the lock sleeve 120 is sleeved outside the lock rod 110, and the lock sleeve 120 is in threaded connection with the lock rod 110; the lock sleeve 120 is stopped on the display unit after being driven by the lock rod 110 to axially slide for a preset stroke, and the lock rod 110 is driven by the handle 140 to rotate relative to the lock sleeve 120. In this embodiment, by the arrangement of the lock sleeve 120, the lock rod 110 can rotate with respect to the lock sleeve 120 by screw threads, and the lock rod 110 moves towards the lock seat 200 simultaneously when rotating, so as to lock the lock rod 110 and the lock seat 200; meanwhile, the lock sleeve 120 is arranged, so that threads are not required to be arranged on the box 300 of the display unit, and the manufacturing difficulty of the box 300 of the display unit is simplified.

In one embodiment, referring to fig. 10, the lock assembly 100 further includes a locking member 180, wherein grooves 121 are formed on a surface of the lock sleeve 120 and distributed along an axial direction thereof, the locking member 180 is configured to be mounted on the display unit, and one end of the locking member 180 can be respectively limited and abutted in each groove 121.

Optionally, the locking member 180 is fixed to the case 300, and the surface of the lock sleeve 120 is formed with two grooves 121. In the initial state, one end of the locking member 180 is abutted and limited in one of the grooves 121, and after the lock sleeve 120 is driven by the lock rod 110 to axially slide for a preset stroke, one end of the locking member 180 is abutted and limited in the other groove 121, so that the locking of the position of the lock sleeve 120 can be realized through the cooperation of the locking member 180 and the groove 121, and the lock sleeve 120 is prevented from sliding on the box 300 of the display unit by mistake. It will be appreciated that in other embodiments of the present utility model, more than two grooves 121 may be provided on the surface of the sleeve 120 to effect locking of the sleeve 120 in different positions when it is desired to stop the sleeve 120 in other positions.

Referring to fig. 10, a sliding groove 122 extending along an axial direction of the lock sleeve 120 is formed on a surface of the lock sleeve 120, the sliding groove 122 is in a waist shape, and each groove 121 is formed at a bottom of the sliding groove 122 at intervals, so that during a sliding process of the lock sleeve 120, one end of the locking member 180 can slide in the sliding groove 122 until one end of the locking member 180 is clamped into one of the grooves 121. The sliding groove 122 guides the sliding of the locking member 180, and improves the connection strength between the locking member 180 and the lock sleeve 120.

In one embodiment, referring to fig. 11, the lock assembly 100 further includes a locking structure 150, the locking structure 150 is connected between the lock sleeve 120 and the handle 140, and the locking structure 150 is used to lock the handle 140 after the handle 140 is rotated by a predetermined angle. Wherein, through the setting of locking structure 150 for when handle 140 rotates preset angle with locking lever 110, after locking lever 110 and lock seat 200, can lock handle 140 through locking structure 150, avoid handle 140 to be touched by mistake and reverse rotation and unlock locking lever 110 and lock seat 200, thereby avoid adjacent display element to unlock because of the maloperation.

Specifically, referring to fig. 11, the locking structure 150 includes a driving member 153, a torsion spring 152 and a ratchet 151, the ratchet 151 is fixed on the lock sleeve 120, the driving member 153 is rotatably disposed on the handle 140, and the torsion spring 152 is connected between the driving member 153 and the handle 140 to tightly support the driving member 153 on the ratchet 151.

Referring to fig. 11, a ratchet is formed on the surface of the ratchet 151, after the handle 140 rotates forward by a preset angle, the driving member 153 is clamped in a tooth slot 1511 of the ratchet under the torsional driving force of the torsion spring 152, so that the driving member 153 cannot rotate relative to the ratchet 151, and the handle 140 cannot rotate relative to the lock sleeve 120, thereby ensuring the locking reliability between the lock lever 110 and the lock base 200. When the lock lever 110 needs to be unlocked relative to the lock base 200, the driving member 153 is pressed by a hand, the driving member 153 is reversely rotated against the torsion force of the torsion spring 152 to disengage from the tooth groove 1511 of the ratchet 151, and the lock between the handle 140 and the lock sleeve 120 is released, at this time, the handle 140 can be manually reversely rotated, so that the lock lever 110 is driven to reversely rotate to be unlocked from the lock base 200.

Referring to fig. 11, a ratchet wheel 151 is sleeved on one end of the lock sleeve 120 near the supporting member 161, a driving member 153 is disposed in an inner cavity of the handle 140, a rotating shaft extends on an inner wall of the handle 140, the driving member 153 is rotatably sleeved on the rotating shaft, a torsion spring 152 is sleeved on the rotating shaft and is respectively connected with the rotating shaft and the driving member 153, one end of the driving member 153 extends to the surface of the handle 140, one end of the driving member 153 is pressed on the surface of the handle 140 to overcome the torsion force of the torsion spring 152 and drive the driving member 153 to rotate around the rotating shaft, and the driving member 153 rotates and drives the other end of the driving member 153 to separate from a tooth groove 1511 of the ratchet wheel 151, so as to unlock the handle 140 and the lock sleeve 120.

In one embodiment, referring to fig. 6, 8 and 10, the lock assembly 100 further includes a first reset member 130, the first reset member 130 is connected between the lock sleeve 120 and the display unit, and the first reset member 130 is used for axially resetting the lock sleeve 120 and the lock rod 110. Specifically, the first reset member 130 abuts against between the lock sleeve 120 and one side of the case 300, when two adjacent display units are required to be unlocked, the handle 140 is manually driven to rotate, after the handle 140 rotates by a preset angle, the lock rod 110 and the lock base 200 are unlocked, and then the lock rod 110, the lock sleeve 120 and the handle 140 are axially reset under the driving of the first reset member 130, without manual reset.

Specifically, the first reset element 130 is a compression spring, the first reset element 130 is sleeved outside the lock sleeve 120, one end of the first reset element 130 is abutted against the lock sleeve 120, and the other end of the first reset element 130 is abutted against the box 300 of the display unit; when the lock bar 110 and the lock sleeve 120 are driven to move toward the lock base 200, the first restoring member 130 compresses and accumulates elastic force, and when the lock bar 110 is unlocked from the lock base 200, the lock sleeve 120 and the lock bar 110 axially restore under the elastic force of the first restoring member 130.

In one embodiment, referring to fig. 6 and 8, the lock assembly 100 further includes a guide assembly 170, the guide assembly 170 includes a mounting plate 171, a guide rod 172, a guide cylinder 174, and a second restoring member 173, the mounting plate 171 is connected to the lock sleeve 120, one end of the guide rod 172 is mounted on the mounting plate 171, the guide cylinder 174 is fixed on the display unit, and the other end of the guide rod 172 is in guide fit with the guide cylinder 174; the second restoring member 173 is sleeved on the guide rod 172, and the second restoring member 173 abuts between the guide cylinder 174 and the mounting plate 171. Specifically, the guide cylinder 174 is mounted in the case 300, and when the lock rod 110 and the lock sleeve 120 are driven by the handle 140 to move axially, the mounting plate 171 and the guide rod 172 move axially along with the lock sleeve 120, and the guide rod 172 is matched with the guide cylinder 174 in a guiding manner during the moving process, so that the stability of the axial movement of the lock rod 110 and the lock sleeve 120 is improved. In addition, the axial resetting of the mounting plate 171, the lock lever 110, and the lock sleeve 120 may be assisted by the second resetting member 173.

Referring to fig. 8, the lock assembly 100 includes two guide rods 172, two guide cylinders 174 and two second restoring members 173, wherein the two guide rods 172 are respectively disposed on opposite sides of the lock rod 110, the two guide rods 172 are respectively mounted on the mounting plate 171, the two guide cylinders 174 are respectively disposed on the housing 300 of the display unit at positions corresponding to the two guide rods 172, the two guide rods 172 are respectively in guiding fit with the two guide cylinders 174, and the two second restoring members 173 are respectively sleeved on the two guide rods 172.

Optionally, the second restoring member 173 is a compression spring.

Alternatively, the guide cylinder 174 is made of a brass material, which has a lubricating effect, thereby ensuring smooth sliding of the guide rod 172, the lock rod 110 and the lock sleeve 120, and greatly improving the operability of the lock assembly 100.

Referring to fig. 8 and 11, the handle 140 includes a first housing 141 and a second housing 142, the first housing 141 includes a sleeve portion 1411 and an extension portion 1412, the sleeve portion 1411 is sleeved outside the lock lever 110, the lock sleeve 120 and the ratchet 151, the sleeve portion 1411 is connected to the other axial end of the lock lever 110, and the guide 162 penetrates the sleeve portion 1411 to connect with the lock lever 110. The extension 1412 extends outwardly from the sleeve portion 1411, the extension 1412 and the second housing 142 are mutually covered to form a holding portion for holding by a human hand, and the driving member 153 is disposed in an inner cavity defined by the extension 1412 and the second housing 142.

Referring to fig. 8, a mounting cylinder 1413 extends from the bottom center of the sleeve portion 1411, and the mounting cylinder 1413 is sleeved on the other end of the axis of the lock lever 110 and is fixedly connected with the lock lever 110. The guide 162 is axially inserted through the mounting cylinder 1413 to be inserted into the locking bar 110 to be fixedly coupled with the locking bar 110.

Referring to fig. 8, a conical step 1621 extends in the circumferential direction at the middle of the guide 162, and a conical groove is formed at the outer end of the mounting cylinder 1413, wherein the conical step 1621 is accommodated and limited in the conical groove.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The lock assembly is used for being matched with a lock seat to lock and unlock two adjacent display units, and is characterized by comprising a lock rod, a handle and a supporting structure, wherein one axial end of the lock rod is movably arranged on the display units, the supporting structure is fixed on the display units, the other axial end of the lock rod is supported on the supporting structure, and the handle is connected with the other axial end of the lock rod; the handle can be driven to move so as to drive the lock rod to axially slide on the display unit to be inserted into the lock seat adjacent to the display unit, and the handle can be driven to rotate after a sliding preset stroke so as to drive one axial end of the lock rod to rotationally lock in the lock seat.

2. The lock assembly of claim 1, wherein the support structure includes a support member configured to be secured to the display unit and a guide member disposed coaxially with the locking bar;

one axial end of the guide piece is arranged on the support piece in a sliding manner, and the other axial end of the guide piece is fixedly connected with the lock rod; or one axial end of the guide piece is fixed on the support piece, and the other axial end of the guide piece is in sliding connection with the lock rod.

3. The lock assembly of claim 1 or 2, further comprising a lock sleeve arranged to be slidably disposed in the display unit, the lock sleeve being disposed externally of the lock rod, the lock sleeve being threadably coupled to the lock rod; the lock sleeve is stopped on the display unit after being driven by the lock rod to axially slide for a preset stroke, and the lock rod is driven by the handle to rotate relative to the lock sleeve.

4. A lock assembly according to claim 3, further comprising locking members having grooves formed in a surface of the sleeve and extending axially therealong, the locking members being configured to be mounted to the display unit, one end of each locking member being capable of being retained in each groove.

5. The lock assembly of claim 3, further comprising a locking structure coupled between the sleeve and the handle, the locking structure for locking the handle after a predetermined angle of rotation of the handle.

6. The lock assembly of claim 5, wherein the locking structure includes a driver, a torsion spring, and a ratchet wheel, the ratchet wheel being secured to the sleeve, the driver being rotatably disposed on the handle, the torsion spring being coupled between the driver and the handle to urge the driver against the ratchet wheel.

7. The lock assembly of claim 3, further comprising a first reset member coupled between the sleeve and the display unit, the first reset member configured for axial reset of the sleeve and the locking bar.

8. A lock assembly according to claim 3, further comprising a mounting plate, a guide bar, a guide cylinder and a second return member, the mounting plate being connected to the sleeve, one end of the guide bar being mounted to the mounting plate, the guide cylinder being arranged to be secured to the display unit, the other end of the guide bar being in guiding engagement with the guide cylinder; the second reset piece is sleeved on the guide rod and is abutted between the guide cylinder and the mounting plate.

9. A connecting lock, comprising a lock assembly and a lock base according to any one of claims 1 to 8, wherein the lock assembly is arranged on one of two adjacent display units, the lock base is arranged on the other of the two adjacent display units, the lock assembly can be locked into the lock base to lock the two adjacent display units, and the lock assembly can be separated from the lock base to unlock the two adjacent display units.

10. An LED display screen, comprising at least two display units and the connection lock according to claim 9, wherein the connection lock is disposed between two adjacent display units to lock and unlock the two adjacent display units.