Lock assembly and splicing screen

Abstract

The utility model belongs to the technical field of LED display screen equipment, and provides a lock assembly which comprises a base, a lock rod, a lock handle and a lock plate. The lock rod is used for being connected with a shaft sleeve on the base in a penetrating mode and provided with a lock head, and the lock head is provided with a first inclined face. The lock handle is provided with a sleeve hole used for being connected to the shaft sleeve in a sleeved mode, and the lock handle can rotate on the base with the shaft sleeve as the axis. The lock plate is arranged on the lock handle, and the lock plate and the lock head on the lock rod are located on the same side of the base; the locking plate is provided with a convex block and a buckling hole, and the convex block is provided with a second inclined surface opposite to the first inclined surface; and the lock handle and the lock plate synchronously rotate on the shaft sleeve, so that the lock head is buckled on the buckle hole of the lock plate, and the first inclined surface is gradually propped against the second inclined surface. The utility model further provides a spliced screen adopting the lock assembly. The technical problem that in the prior art, a connecting structure on a spliced screen cannot tighten a dark line, and the display effect is affected is solved.

Description

Technical Field

[0001] The present application belongs to the technical field of LED display screen equipment, and in particular, relates to a lock assembly and a spliced ​​screen. Background Art

[0002] With the rapid development of the LED industry, the rental of LED display screens is also extremely popular. Among them, the spliced ​​screen is a large screen composed of multiple LED display screens spliced ​​in a matrix. They usually use a box to load the display screen, and then connect the boxes adjacent to each other to form a large screen.

[0003] The connection structure between the boxes of the above display screen is particularly important. The traditional connection structure is realized by a spring latch lock, that is, a connecting shaft and a sleeve that can be sleeved together are set between the boxes, and then side holes corresponding to the positions are opened on the connecting shaft and the sleeve, and the elastic lock is inserted into the side hole horizontally, so that the connecting shaft and the sleeve are locked with each other to achieve a tight connection between adjacent boxes.

[0004] However, this connection structure has defects. Since the connecting shaft and the sleeve are processed and formed according to the production size requirements, that is, they cannot be changed after production and forming, the side holes on the connecting shaft and the sleeve overlap after they are connected, so that the elastic pin can be inserted horizontally into the two overlapping side holes to achieve connection and fixation. If there is a dimensional tolerance between the connecting shaft and the sleeve, there is a gap between the connecting beams of the adjacent boxes after the two are connected. This gap cannot be tightened and repaired, resulting in dark lines between adjacent display screens when the entire large screen is viewed from a distance, affecting the overall effect. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a lock assembly and a spliced ​​screen to solve the technical problem that the connection structure on the spliced ​​screen in the prior art cannot tighten the dark lines and affect the display effect.

[0006] To achieve the above purpose, the technical solution adopted by the present application is: to provide a lock assembly, including:

[0007] A base, provided with a shaft sleeve;

[0008] A locking rod, used to pass through the shaft sleeve on the base, the locking rod is provided with a locking head, and the locking head has a first inclined surface;

[0009] A locking handle having a sleeve hole for sleeved on the shaft sleeve, wherein the locking handle can rotate on the base with the shaft sleeve as an axis;

[0010] A locking plate is arranged on the locking handle and is located on the same side of the base as the locking head on the locking rod; a protrusion and a buckle hole are provided on the locking plate, and the protrusion has a second inclined surface arranged opposite to the first inclined surface; the locking handle and the locking plate rotate synchronously on the shaft sleeve so that the locking head is buckled on the buckle hole of the locking plate, and the first inclined surface and the second inclined surface are gradually pressed against each other.

[0011] The lock assembly provided by the present application has the beneficial effect that: compared with the prior art, the traditional connection structure is improved. The lock assembly of the present application includes an operating part composed of a base and a lock handle arranged on one connecting body, and a lock rod arranged on another connecting body. After the two parts are sleeved with each other, the lock handle and the lock rod are manually operated to rotate relative to each other to achieve connection and fixation. The lock rod is provided with a lock head, and the lock handle is provided with a lock plate. The lock plate is provided with a convex block and a buckle hole for the lock head to buckle. After the lock head passes through the buckle hole, as the lock handle drives the lock plate to rotate, it is buckled on the buckle hole to achieve connection and fixation. Among them, on the abutting surface between the lock head and the convex block, the lock head is provided with a first inclined surface, and the convex block is provided with a second inclined surface, and the first inclined surface and the second inclined surface are arranged opposite to each other. As the lock handle drives the lock plate to rotate, the second inclined surface on the convex block and the first inclined surface on the lock head are gradually tightened, thereby tightening and fixing the two adjacent connecting bodies, effectively eliminating the gap between the two connecting bodies, and thus achieving the repair of the dark lines between the adjacent display screens.

[0012] The matching structure of the lock head and the lock plate is improved, the buckle hole on the lock plate is a waist-shaped hole, the shape of the lock head on the lock rod is adapted to the buckle hole, and the lock head can be screwed on the buckle hole after passing through the buckle hole.

[0013] In one embodiment, the end surface of the lock head that abuts against the lock plate further comprises a buckling portion for abutting against the protrusion, the buckling portion is arranged on the end surface of the lock head adjacent to the first inclined surface, and the protrusion on the lock plate can be guided to the buckling portion along the first inclined surface. The buckling portion on the lock head can abut against the protrusion to serve as a reminder that the connection is in place.

[0014] The fixing structure of the lock plate is improved, the lock handle is provided with a fixing hole for installing the lock plate, the lock plate is provided with a connecting hole corresponding to the position of the fixing hole, the connecting hole and the protrusion are arranged on the lock plate to avoid the installation of fasteners such as screws, etc. In this way, the lock plate can be installed on the lock handle without changing the structure of the lock handle, which is convenient for installation or removal and replacement, and effectively reduces the modification cost.

[0015] In one embodiment, the locking handle includes a circular ring end and a handle extending to one side from the circular ring end, and the circular ring end of the locking handle is used to be sleeved on the shaft sleeve of the base; the locking plate is an annular plate, and the locking plate is arranged on the circular ring end of the locking handle. The buckle hole on the locking plate is coaxial with the sleeve hole of the shaft sleeve, and the area of ​​the locking plate is not larger than the end surface area of ​​the circular ring end of the locking handle, so as to avoid the locking plate protruding beyond the circular ring end of the locking handle, which may easily cause interference outside the locking handle.

[0016] The structure of the lock rod is improved. One end of the lock rod is provided with an extension shaft whose inner diameter is smaller than that of the lock head. The lock head is integrally connected to the extension shaft. The other end of the lock rod is provided with a threaded hole for mounting on a connection carrier. On the one hand, one end of the lock rod is connected to the lock head through the extension shaft, so that the lock head can have a movable stroke after passing through the buckle hole on the lock plate, which is convenient for tightening and fixing operations. On the other hand, a threaded hole is provided on the other end of the lock rod, which is convenient for installing fasteners such as screws on the connection carrier.

[0017] The structure of the lock handle is improved, and the lock assembly further includes a ratchet, a button and a torsion spring. The ratchet is fixed on the shaft sleeve of the base, and the button is arranged on the lock handle; the button includes a rotating shaft, a positioning part and an operating handle. The rotating shaft and the positioning part are both located inside the lock handle, and the positioning part has a convex tooth that meshes with the ratchet. The torsion spring is arranged on the rotating shaft, and the operating handle extends out of the lock handle. In this way, an unlocking button is arranged on the lock handle, which is convenient for people to manually operate the button to lock or unlock the lock assembly.

[0018] In one embodiment, the lock handle is further provided with a cover plate for covering the button, and the cover plate is provided with a mounting hole corresponding to the position of the rotating shaft so as to install fasteners such as screws and the like to install the cover plate together with the button on the lock handle.

[0019] In one embodiment, a notch is provided on the side wall of the lock handle for the button to extend out, and a positioning block is provided on the edge of the cover plate, and the positioning block is embedded in the notch. This is conducive to matching the posture of a person holding the lock handle, so that the thumb of the person can operate the button smoothly, thereby improving the operating efficiency.

[0020] The present application also provides a spliced ​​screen, comprising at least two display screen units and the lock assembly, wherein the display screen unit comprises at least an upper connecting beam and a lower connecting beam, the lock rod is arranged on the upper connecting beam, the lower connecting beam is provided with a through hole for the lock rod to pass through, and the lock handle is arranged on the through hole of the lower connecting beam through the base. The lock assembly of the present application can be used to connect and fix the upper connecting beam and the lower connecting beam, and can be tightened up and down to eliminate the dark line between the two display screen units, thereby improving the visual experience of the entire large screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 Schematic diagram of the explosion structure of the lock assembly provided in the embodiment of the present application Figure 1 ;

[0023] Figure 2 A structural view of a lock assembly provided in an embodiment of the present application installed on an upper connecting beam and a lower connecting beam;

[0024] Figure 3 A schematic diagram of the assembly structure of the lock handle and the base provided in an embodiment of the present application;

[0025] Figure 4 Schematic diagram of the explosion structure of the lock assembly provided in the embodiment of the present application Figure 2 ;

[0026] Figure 5 A view showing the connection state of the lock assembly provided in an embodiment of the present application on the upper connecting beam and the lower connecting beam;

[0027] Figure 6 A view of the locking state of the lock assembly provided in the embodiment of the present application on the upper connecting beam and the lower connecting beam;

[0028] Figure 7 Schematic diagram of the three-dimensional structure of the lock rod provided in the embodiment of the present application Figure 1 ;

[0029] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of part A;

[0030] Fig. 9 A schematic diagram of a three-dimensional structure of a lock handle provided in an embodiment of the present application disposed on a base;

[0031] Fig.10 Schematic diagram of the three-dimensional structure of the lock rod provided in the embodiment of the present application Figure 2 ;

[0032] Fig.11 Schematic diagram of the lock handle explosion structure provided in the embodiment of the present application Figure 1 ;

[0033] Fig.12 Schematic diagram of the lock handle explosion structure provided in the embodiment of the present application Figure 2 ;

[0034] Fig.13 Schematic diagram of the lock handle explosion structure provided in the embodiment of the present application Figure 3 .

[0035] Among them, the reference numerals in the figure are:

[0036] 100-upper connecting beam; 101-mounting seat; 102-jack;

[0037] 200-lower connecting beam;

[0038] 1-base; 11-sleeve;

[0039] 2-locking rod; 21-locking head; 211-first inclined surface; 212-fastening portion; 22-extension shaft; 23-threaded hole; 24-positioning plane;

[0040] 3-locking handle; 31-sleeve hole; 32-fixing hole; 33-ring end; 34-handle; 35-limiting pin; 36-cover plate; 361-installation hole; 362-positioning block; 37-notch;

[0041] 4-locking piece; 41-bump; 411-second inclined surface; 42-button hole; 43-connecting hole;

[0042] 5-ratchet; 51-limiting opening; 52-limiting part;

[0043] 6-button; 61-rotating shaft; 62-positioning part; 621-convex tooth; 63-operating handle; 64-perforation;

[0044] 7- Torsion spring. DETAILED DESCRIPTION

[0045] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0046] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or 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 indirectly connected to the other element.

[0047] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] On the spliced ​​screen, adjacent LED display screens are connected and fixed with a traditional connection structure, which generally adopts a spring latch lock, that is, connecting shafts and sleeves that can be socketed with each other are respectively arranged on the connecting beams between the boxes for loading the display screens, and then corresponding side holes are opened on the connecting shaft and the sleeve, and elastic latches are laterally inserted into the side holes, so that the connecting shaft and the sleeves are connected in series to achieve the connection and fixation of adjacent boxes.

[0050] However, this connection structure has defects that are difficult to repair. Specifically, since the connecting shaft and the sleeve are processed and formed according to the production size requirements, that is, they cannot be changed after production and forming, the side holes on the connecting shaft and the sleeve overlap after the connection, so that the elastic pin can be inserted horizontally into the two overlapping side holes to achieve connection and fixation. If there is a dimensional tolerance between the connecting shaft and the sleeve, after the connection and fixation in the above manner, there is a gap between the connecting beams of adjacent boxes. This gap cannot be tightened and repaired, resulting in dark lines between adjacent display screens when viewing the entire large screen from a distance, affecting the overall perception.

[0051] In addition, display screens are often transported to various locations for use, and safety during transportation is particularly important, otherwise the display screens are easily damaged by collisions, resulting in economic losses. In actual applications, the box with the above-mentioned connection structure cannot be directly fixed on the transport vehicle. The specific problem is that the display screen unit at the bottom layer (the box carrying the display screen as a unit) needs to be additionally fixed on the floor of the carriage in order to cooperate with it to be fixed on the floor of the carriage, which increases the transportation cost.

[0052] Here, the embodiments of the present application provide a new type of lock assembly and splicing screen, which can realize the tightening and fixation between adjacent connecting bodies, thereby tightening the dark lines between adjacent display screen units, effectively improving the overall viewing effect of the entire large screen, and solving the technical problem that the connection structure on the traditional splicing screen cannot tighten the dark lines, affecting the display effect. It is now described in detail.

[0053] Please also read Figure 1 and Figure 2 The lock assembly includes a base 1, a lock rod 2, a lock handle 3 and a lock plate 4. The lock rod 2 and the lock handle 3 are used to be respectively arranged on two adjacent connection carriers. Figure 2 As shown, the lock rod 2 can be used to be arranged on the upper connecting beam 100 of the display screen unit, and the lock handle 3 can be arranged on the lower connecting beam 200 of the display screen unit through the base 1. When two adjacent display screen units are spliced ​​with each other, the upper connecting beam 100 of one display screen unit is spliced ​​adjacent to the lower connecting beam 200 of the other display screen unit, and the lock rod 2 on the upper connecting beam 100 can pass through the through hole (not shown) on the lower connecting beam 200 and be inserted into the base 1, so that the lock handle 3 is screwed and fixed.

[0054] Please also refer to Figure 2 and Figure 3 The base 1 is provided with a shaft sleeve 11, and the lock handle 3 has a sleeve hole 31, and is sleeved on the shaft sleeve 11 of the base 1 through the sleeve hole 31, so that the lock handle 3 can be rotated on the base 1 with the shaft sleeve 11 as the axis for manual operation.

[0055] Please also read Figure 1 , Figure 2 and Figure 4 The locking rod 2 is used to pass through the shaft sleeve 11 on the base 1. The locking rod 2 is provided with a locking head 21. The locking head 21 of the locking rod 2 has a first inclined surface 211. After the locking rod 2 passes through the shaft sleeve 11 from one side of the base 1, the locking head 21 is located at the other side of the base 1.

[0056] like Figure 4 As shown, the lock plate 4 is arranged on the lock handle 3, and is located on the same side of the base 1 as the lock head 21 on the lock rod 2. In this embodiment, the lock plate 4 is preferably a ring body, and the lock plate 4 is provided with a protrusion 41 and a buckle hole 42 located in the middle of the ring body, and the lock head 21 on the lock rod 2 can pass through the buckle hole 42 and be buckled on the buckle hole 42.

[0057] The projection 41 of the locking piece 4 has a second inclined surface 411, which is arranged opposite to the first inclined surface 211 on the lock head 21. It can be understood here that when the lock head 21 and the projection 41 are in close contact with each other, the first inclined surface 211 and the second inclined surface 411 can contact each other obliquely.

[0058] When the lock handle 3 is manually operated, the lock handle 3 and the lock plate 4 rotate synchronously on the shaft sleeve 11. It can be understood here that the lock rod 2 and the lock head 21 on the lock rod 2 are both stationary, and the lock handle 3 and the lock plate 4 rotate synchronously with the lock rod 2 as the axis, thereby causing a relative change in the position of the lock head 21, so that the lock head 21 can be screwed on the buckle hole 42 of the lock plate 4, and at the same time, the first inclined surface 211 on the lock head 21 and the second inclined surface 411 on the protrusion 41 of the lock plate 4 are gradually pressed against each other, thereby achieving the goal of tightening the distance between the two adjacent display screen units and effectively eliminating the dark lines between the two adjacent display screen units.

[0059] Compared with the prior art, the lock assembly provided in the embodiment of the present application improves the traditional connection structure. The lock assembly of the present application includes an operating part composed of a base 1 and a lock handle 3 arranged on a connecting body, and a lock rod 2 arranged on another connecting body. After the two parts are mutually sleeved, the lock handle 3 is rotated by manual operation to cause the lock plate 4 on the lock handle 3 and the lock head 21 on the lock rod 2 to change their positions relative to each other, thereby realizing the turn-lock fixation.

[0060] Specifically, the lock rod 2 has a lock head 21, the lock handle 3 has a lock plate 4, the lock plate 4 has a protrusion 41 and a buckle hole 42 for the lock head 21 to buckle, and the lock head 21 passes through the buckle hole 42 and is screwed on the buckle hole 42 as the lock handle 3 drives the lock plate 4 to rotate, thereby achieving connection and fixation.

[0061] Among them, on the abutting surface between the lock head 21 and the protrusion 41, the lock head 21 is provided with a first inclined surface 211, and the protrusion 41 is provided with a second inclined surface 411, and the first inclined surface 211 and the second inclined surface 411 are arranged opposite to each other. As the lock handle 3 drives the lock plate 4 to rotate, the second inclined surface 411 on the protrusion 41 and the first inclined surface 211 on the lock head 21 are gradually tightened, so that the two adjacent connecting bodies are tightened and fixed, and the gap between the two connecting bodies is effectively eliminated, thereby realizing the repair of the dark line between the adjacent display screens.

[0062] The following takes the spliced ​​screen as an example to further illustrate the working principle of the lock assembly set on the connection carrier.

[0063] In this embodiment, a spliced ​​screen includes a plurality of adjacently spliced ​​LED display screen units, and each display screen unit includes a box for loading an LED display screen. This box can be a disk structure consisting of a bottom plate and four frames, or it can be a C-shaped frame structure consisting of only two opposite sides. These edges can include an upper connecting beam 100 and a lower connecting beam 200 located on the upper and lower edges of the box, and / or left and right side ribs located on the left and right sides of the box. The lock assembly provided in the embodiment of the present application can be set on these side ribs and the upper connecting beam 100 and the lower connecting beam 200, so as to realize the upper and lower connection or left and right connection between adjacent boxes. The following is a detailed description taking the upper and lower connection as an example.

[0064] In this embodiment, each display screen unit includes at least an upper connecting beam 100 and a lower connecting beam 200. Figure 2 , Figure 5 , Figure 6 As shown, the lock rod 2 is arranged on the upper connecting beam 100 , the lower connecting beam 200 is provided with a through hole (not shown) for the lock rod 2 to pass through, and the lock handle 3 is arranged on the through hole of the lower connecting beam 200 through the base 1 .

[0065] When two adjacent display screen units are installed and connected, the upper connecting beam 100 on one display screen unit and the lower connecting beam 200 on the other display screen unit are aligned with each other and spliced ​​together. Figure 5 As shown, the lock rod 2 on the upper connecting beam 100 passes through the through hole of the lower connecting beam 200 and is sleeved on the shaft sleeve 11 of the base 1, and passes through the upper side of the shaft sleeve 11, so that the lock head 21 and the lock plate 4 on the lock handle 3 are located on the same side of the base 1. At this time, Figure 4 , Figure 5 and Figure 6 As shown, the lock handle 3 is manually operated to rotate so that the lock head 21 is buckled into the buckle hole 42 of the lock plate 4. At the same time, as the first inclined surface 211 on the lock head 21 and the second inclined surface 411 on the protrusion 41 of the lock plate 4 gradually press against each other, the upper connecting beam 100 and the lower connecting beam 200 are tightened up and down, thereby eliminating the possible gap between the upper connecting beam 100 and the lower connecting beam 200, improving the fixing effect, effectively eliminating the dark line between the upper connecting beam 100 and the lower connecting beam 200, and improving the overall appearance of the entire splicing screen.

[0066] In addition, compared with the structure in the related art in which the locking rod 2 is arranged on the locking handle 3 and connected by threads, this structure is that the locking rod 2 has an external thread, the locking rod 2 is arranged on the locking handle 3, and can rotate synchronously with the locking handle 3. A threaded sleeve that cooperates with the external thread on the locking rod 2 is arranged on the other connector, and the tightening distance is achieved by the threaded connection between the two. In practical applications, the locking handle 3 needs to be arranged on the upper connecting beam 100 of the display screen unit, and the threaded sleeve needs to be arranged on the lower connecting beam 200 of the same display screen unit, and the sleeve hole 31 of the threaded sleeve is arranged downward, so that a fixed connection between two adjacent display screen units can be achieved. However, on the transport vehicle, the lock assembly of this structure, because there is only a threaded sleeve on the lower connecting beam 200, the display screen unit at the bottom layer cannot be connected to the floor of the carriage, which affects the transportation and loading. The only solution is to make significant changes to the floor of the transport carriage, which increases the cost of modification.

[0067] In the lock assembly provided in the embodiment of the present application, the lock handle 3 is arranged on the lower connecting beam 200. It is only necessary to install the lock rod 2 on the floor of the carriage, let the lower connecting beam 200 of the bottom display screen unit be sleeved on the lock rod 2 through a through hole (not shown in the figure), let the lock rod 2 pass through the lock handle 3, and then operate the lock handle 3 to rotate, so that the lock piece 4 on the lock handle 3 and the lock head 21 on the lock rod 2 can be tightened and fixed. It can be seen that the lock assembly of the present application is very simple for the fixed matching structure on the transport vehicle, and the lock rod can be used by simply setting it on the floor of the carriage, and the modification cost is low. It is easy to operate, so that the display screen unit can be firmly fixed on the floor of the carriage, effectively ensuring the fixing effect, which is better than the above-mentioned related technologies.

[0068] For the matching structure between the lock head 21 and the lock plate 4, please refer to the embodiment of the present application. Figure 4 and Figure 6 The buckle hole 42 on the locking plate 4 is a waist-shaped hole, and the shape of the lock head 21 on the locking rod 2 is adapted to the buckle hole 42, so that after the lock head 21 passes through the buckle hole 42, as the locking handle 3 links the locking plate 4 to rotate, the position of the lock head 21 on the locking rod 2 changes relative to that of the lock head 21, so that the lock head 21 can be screwed on the buckle hole 42.

[0069] In this embodiment, if Figure 4 , Figure 6 and Figure 7 As shown, the lock head 21 is an approximately rectangular structure, which can just pass through the buckle hole 42 on the lock plate 4, and then the lock handle 3 together with the lock plate 4 and the lock rod 2 rotate relative to each other, so that the positions of the lock head 21 and the buckle hole 42 change relatively, for example, after rotating 90 degrees, the lock head 21 is buckled on the buckle hole 42.

[0070] In view of the above-mentioned rotating buckle structure, the positioning effect is further improved. In one embodiment of the present application, please refer to Figure 4 , Figure 6 and Figure 8 The end surface where the lock head 21 abuts against the lock plate 4 also has a snap-fitting portion 212 for abutting against the protrusion 41. The snap-fitting portion 212 is arranged on the abutting surface of the lock head 21 adjacent to the first inclined surface 211. The protrusion 41 on the lock plate 4 can be guided along the first inclined surface 211 to the snap-fitting portion 212 and snap-fit ​​with the snap-fitting portion 212.

[0071] In this embodiment, if Figure 8 As shown, the bottom end surface of the lock head 21 has an asymmetrical pair of first inclined surfaces 211 and a buckle connection portion 212 at the end of the first inclined surfaces 211; Figure 4 As shown, the lock plate 4 has two protrusions 41 located on both sides of the buckle hole 42, and the second inclined surfaces 411 on the two protrusions 41 are matched with the first inclined surface 211 on the lock head 21. When installing and connecting two adjacent display screen units, as shown in FIG. Figure 6As shown, the bottom end surface of the lock head 21 abuts against the protrusion 41 on the lock plate 4, and as the lock handle 3 is rotated by hand, the positions of the lock head 21 and the lock plate 4 change relative to each other, so that the first inclined surface 211 and the second inclined surface 411 are gradually tightened, and the protrusion 41 on the lock plate 4 can be guided along the first inclined surface 211 to the buckling portion 212, so that the side of the protrusion 41 abuts against the buckling portion 212.

[0072] In this way, the buckling portion 212 provided on the lock head 21 can abut against the protrusion 41 to serve as a reminder of the connection, so that the operator knows that the lock head 21 has been buckled into place on the buckle hole 42, and the up and down tightening operation is also completed, thereby improving the operating efficiency.

[0073] For the fixing structure of the locking piece 4, please refer to the embodiment of the present application. Figure 4 and Fig. 9 The lock handle 3 is provided with a fixing hole 32 for installing the lock plate 4, and the lock plate 4 is provided with a connecting hole 43 corresponding to the position of the fixing hole 32, so as to install fasteners such as screws for connection and fixing. The structure is simple, easy to implement, and convenient to operate. In this way, without changing the structure of the lock handle 3, the lock plate 4 can be directly installed on the lock handle 3, which is convenient for installation or removal and replacement, and effectively reduces the modification cost.

[0074] The connection hole 43 and the protrusion 41 are arranged on the lock plate 4 to avoid each other, thereby reducing the occupied space and facilitating the reduction of the volume of the lock plate 4 and the entire lock assembly.

[0075] For the structure of the lock handle 3, please refer to the embodiment of the present application. Figure 3 , Figure 4 and Fig. 9 The lock handle 3 includes a circular ring end 33 and a handle 34 extending from the circular ring end 33 to one side. The circular ring end 33 of the lock handle 3 is used to be sleeved on the shaft sleeve 11 of the base 1.

[0076] The locking plate 4 is preferably an annular plate, which is arranged on the circular end 33 of the locking handle 3. The buckle hole 42 on the locking plate 4 is coaxial with the sleeve hole of the shaft sleeve 11, so that the locking rod 2 can pass through the shaft sleeve 11 of the base 1 in turn and then pass through the buckle hole 42 of the locking plate 4, thereby improving the concentricity.

[0077] like Fig. 9 As shown, the area of ​​the locking plate 4 is not larger than the end surface area of ​​the circular end 33 of the locking handle 3, that is, the area of ​​the locking plate 4 is less than or equal to the end surface area of ​​the circular end 33 of the locking handle 3, thereby preventing the locking plate 4 from protruding beyond the circular end 33 of the locking handle 3 and causing interference to the outside of the locking handle 3.

[0078] For the structure of the locking rod 2, please refer to the embodiment of the present application. Figure 7 and Figure 8One end of the lock rod 2 is provided with an extension shaft 22 whose inner diameter is smaller than that of the lock head 21. The lock head 21 is integrally connected to the extension shaft 22. After the lock head 21 passes through the buckle hole 42, the lock head 21 is located on the other side of the base 1, and the extension shaft 22 is located in the buckle hole 42. As the lock handle 3 drives the lock plate 4 to rotate, the positions of the lock plate 4 and the lock head 21 change relatively. During the relative change of position, the first inclined surface 211 on the lock head 21 and the second inclined surface 411 on the protrusion 41 are gradually tightened to screw the lock head 21 on the buckle hole 42 of the lock plate 4.

[0079] Thus, one end of the lock rod 2 is connected to the lock head 21 through the extension shaft 22, so that the lock head 21 can have a movable stroke after passing through the buckle hole 42 on the lock plate 4, which is convenient for tightening and screwing and fixing operations.

[0080] Please also read Figure 2 and Fig.10 The other end of the locking rod 2 is provided with a threaded hole 23 for mounting on the connection carrier. In this embodiment, the other end of the locking rod 2 is provided with a threaded hole 23 that passes through the interior of the locking rod 2. The threaded hole 23 is coaxially arranged with the locking rod 2 to facilitate fixing on the connection carrier by adding fasteners such as screws.

[0081] In this embodiment, if Figure 2 As shown, a mounting seat 101 of the locking rod 2 is provided on the upper connecting beam 100, and a socket 102 is provided on the mounting seat 101, so that the other end of the locking rod 2 is plugged into the socket 102, and a fixing screw can be installed in the mounting seat 101, so that the fixing screw is threadedly connected with the threaded hole 23 on the end of the locking rod 2 to achieve fixation.

[0082] It can be seen that the threaded hole 23 is provided on the other end of the locking rod 2, and only ordinary screws are needed to set it on the connection carrier. It is beneficial to directly install the locking rod 2 on the floor of the carriage to fix the display screen unit at the bottom layer, effectively reducing the difficulty and cost of transformation.

[0083] Preferably, if Figure 7 and Fig.10 As shown, a positioning plane 24 extending toward the opening of the threaded hole 23 is also provided on the outer periphery of the locking rod 2 so as to match the shape of the insertion hole 102 on the mounting seat 101, thereby playing a fool-proof installation role.

[0084] In other embodiments (not shown), the threaded hole 23 may also be opened on the outer periphery of the other end of the locking rod 2, and the same technical effect may be achieved by installing fasteners such as screws and inserting them transversely into the threaded hole 23 for threaded connection.

[0085] For the structure of the lock handle 3, please refer to the embodiment of the present application. Fig.11 and Fig.12The lock assembly further includes a ratchet 5, a button 6 and a torsion spring 7. The ratchet 5 is a gear structure having a through hole for sleeve connection in the middle and teeth on the circumference. The ratchet 5 is sleeved and fixed on the sleeve 11 of the base 1. Here, it can be preferably fixed on the sleeve 11 of the base 1 by welding.

[0086] The button 6 is disposed on the lock handle 3. In this embodiment, the button 6 is similar to the shape of a handle, and includes a rotating shaft 61, a positioning portion 62, and an operating handle 63. The rotating shaft 61 and the positioning portion 62 are both located inside the lock handle 3. The positioning portion 62 has a convex tooth 621, which is used to mesh with the teeth corresponding to the position on the ratchet 5.

[0087] The torsion spring 7 is disposed on the rotating shaft 61 , and is used to provide an elastic force for the button 6 , so that the positioning portion 62 remains engaged with the teeth of the ratchet 5 .

[0088] The operating handle 63 extends out of the lock handle 3 for manual operation to unlock the above-mentioned locked state.

[0089] Therefore, an unlocking button 6 is installed on the lock handle 3, so that a person can operate the button 6 to lock or unlock the lock assembly.

[0090] In this embodiment, if Fig.11 and Fig.12 As shown, the button 6 is provided with a through hole 64 for fixing the torsion spring 7 , so that one end of the spring bar of the torsion spring 7 is fixed in the through hole 64 , and the other end presses against the inner wall of the lock handle 3 .

[0091] Please also refer to Fig.12 and Fig.13 A limit pin 35 for limiting the rotational travel of the lock handle 3 is also provided in the lock handle 3. The ratchet 5 has a limit opening 51 for the limit pin 35 to be embedded in, and limit portions 52 are provided at both ends of the limit opening 51. The limit pin 35 is respectively abutted against the limit portions 52 at both ends, thereby limiting the rotational travel of the lock handle 3.

[0092] When the lock handle 3 is manually operated to rotate, the limit pin 35 inside the lock handle 3 is driven to move in the limit opening 51 of the ratchet 5, and the displacement range is limited by the limit portions 52 at both ends of the limit opening 51. The displacement range can preferably match the stroke of the above-mentioned protrusion 41 and the buckle portion 212 on the lock head 21, thereby improving the position matching effect.

[0093] In this embodiment, if Fig.13 As shown, the limit pin 35 is preferably a latch pin arranged in the circular end 33 of the lock handle 3, and the latch pin is arranged in the limit opening 51 of the ratchet 5, and moves in the limit opening 51 of the ratchet 5 as the lock handle 3 rotates, or is stopped by the limit parts 52 at both ends of the limit opening 51.

[0094] Please also read Fig.11 , Fig.12 and Fig.13 The lock handle 3 is also provided with a cover plate 36 for covering the button 6. The cover plate 36 is provided with a mounting hole 361 corresponding to the position of the rotating shaft 61 so as to install fasteners such as screws, etc., and install the cover plate 36 together with the button 6 on the lock handle 3.

[0095] In this embodiment, if Fig.13 As shown, the handle 34 of the lock handle 3 extends outward from the circular end 33 to form a triangular portion. The button 6 is arranged on the triangular portion, and the shape of the cover plate 36 matches the triangular portion, so as to fill and cover the triangular portion and accommodate the button 6 on the lock handle 3.

[0096] Based on the above, in the embodiments of this application, please refer to Fig.13 A notch 37 is preferably provided on the side wall of the lock handle 3 so that the operating handle 63 on the button 6 can extend out of the lock handle 3 from the notch 37 .

[0097] A positioning block 362 is further provided on the edge of the cover plate 36 , and the positioning block 362 is used to be embedded in the notch 37 , so as to limit the cover plate 36 on the lock handle 3 .

[0098] Thus, a button 6 is arranged on the lock handle 3, and an operating handle 63 of the button 6 extends from the notch 37 on the lock handle 3 for a person's finger to press. This is conducive to matching the posture of a person holding the lock handle 3, so that the thumb of the person's hand can operate the button 6, thereby improving the operating efficiency.

[0099] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A lock assembly, characterized in that: include: A base, provided with a shaft sleeve; A locking rod, used to pass through the shaft sleeve on the base, the locking rod is provided with a locking head, and the locking head has a first inclined surface; A locking handle having a sleeve hole for sleeved on the shaft sleeve, wherein the locking handle can rotate on the base with the shaft sleeve as an axis; A locking plate is arranged on the locking handle and is located on the same side of the base as the locking head on the locking rod; a protrusion and a buckle hole are provided on the locking plate, and the protrusion has a second inclined surface arranged opposite to the first inclined surface; the locking handle and the locking plate rotate synchronously on the shaft sleeve so that the locking head is buckled on the buckle hole of the locking plate, and the first inclined surface and the second inclined surface are gradually pressed against each other.

2. The lock assembly according to claim 1, characterized in that: The buckle hole on the locking plate is a waist-shaped hole, the shape of the lock head on the locking rod is adapted to the buckle hole, and the lock head can be screwed on the buckle hole after passing through the buckle hole.

3. The lock assembly according to claim 1, characterized in that: The end surface where the lock head abuts against the lock plate also has a snap-fit ​​portion for abutting against the protrusion. The snap-fit ​​portion is arranged on the end surface of the lock head adjacent to the first inclined surface, and the protrusion on the lock plate can be guided to the snap-fit ​​portion along the first inclined surface.

4. The lock assembly according to claim 1, characterized in that: The lock handle is provided with a fixing hole for installing the lock plate, the lock plate is provided with a connecting hole corresponding to the position of the fixing hole, and the connecting hole and the protrusion are arranged on the lock plate to avoid each other.

5. The lock assembly according to claim 1, characterized in that: The locking handle includes a circular ring end and a handle extending to one side from the circular ring end, and the circular ring end of the locking handle is used to be sleeved on the shaft sleeve of the base; the locking plate is an annular plate, and the locking plate is arranged on the circular ring end of the locking handle. The buckle hole on the locking plate is coaxial with the sleeve hole of the shaft sleeve, and the area of ​​the locking plate is not larger than the end surface area of ​​the circular ring end of the locking handle.

6. The lock assembly according to claim 1, characterized in that: An extension shaft having an inner diameter smaller than that of the lock head is provided at one end of the lock rod, and the lock head is integrally connected to the extension shaft; a threaded hole for mounting on a connection carrier is provided at the other end of the lock rod.

7. The lock assembly according to any one of claims 1 to 6, characterized in that: The lock assembly also includes a ratchet, a button and a torsion spring, the ratchet is fixed on the sleeve of the base, and the button is arranged on the lock handle; the button includes a rotating shaft, a positioning portion and an operating handle, the rotating shaft and the positioning portion are both located inside the lock handle, the positioning portion has a convex tooth that engages with the ratchet, the torsion spring is arranged on the rotating shaft, and the operating handle extends out of the lock handle.

8. The lock assembly according to claim 7, characterized in that: The lock handle is also provided with a cover plate for covering the button, and the cover plate is provided with a mounting hole corresponding to the position of the rotating shaft.

9. The lock assembly according to claim 8, characterized in that: A notch is provided on the side wall of the lock handle for the operating handle of the button to extend out, and a positioning block is provided on the edge of the cover plate, and the positioning block is embedded in the notch.

10. A spliced ​​screen, characterized in that: The invention comprises at least two display screen units and a lock assembly as claimed in any one of claims 1 to 9, wherein the display screen unit comprises at least an upper connecting beam and a lower connecting beam, the locking rod is arranged on the upper connecting beam, the lower connecting beam is provided with a through hole for the locking rod to pass through, and the locking handle is arranged on the through hole of the lower connecting beam through the base.

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