Patent Description:
Nowadays, during the process of assembling multiple LED cabinets of the LED display, in order to make that the angle between two adjacent LED cabinets can be adjusted, the LED cabinets are connected by arc-shaped locks. However, most of the existing arc-shaped locks can only adjust the angle between the two adjacent LED cabinets in a wide range, which cannot meet the customer's demand for adjusting the angle in a small range.

<CIT> discloses a angle adjuster including a guide shaft, a guide member, and a locking assembly. The guide shaft is provided with an arc-shaped inserting part. The guide member is provided with an arc-shaped groove matched with the arc-shaped inserting part. The guide shaft and the guide member are respectively connected with a quick lock which is connected to an external device. The disclosure has the following advantages: easy disassembly and assembly, which can save labor costs when disassembling and assembling the adjuster, increase work efficiency, and save work time. The adjuster is convenient for adjustment, the adjustment does not need to be adjusted by rotating the screw with a screwdriver as before, but only needs to pull the handle without an additional tool, that is, no tools are required during installing and adjusting.

<CIT> discloses an electric arc lock, including a base, an arc slider, a worm and a motor with a self-locking function. The arc slot and a receiving cavity are provided in the base, and the receiving cavity is communicated with the arc slot. The arc slider can be slidably inserted in the arc slot, and one side of the arc slider close to the receiving cavity is a toothed structure. The worm is provided in the receiving cavity, and the worm is meshed with the toothed structure. The worm is connected to the motor. A display screen is also disclosed, which includes a first box body and a second box body, and also includes the electric arc lock. The first box body is connected to the base, and the second box body is connected to the arc slider. The electric arc lock and the display screen have simple structures, are convenient for adjustments and are labor-saving, can realize intelligent control, have high adjustment accuracy, and have higher structural strength of the display screen after splicing.

The main objective of the present disclosure is to provide an arc-shaped adjustment lock according to the features of claim <NUM>.

According to the invention, the arc-shaped adjustment lock includes:
a base, an adjustment component, and a pressing lock assembly. The base is connected to a first LED cabinet. The base has a first arc-shaped portion. The adjustment component is connected to a second LED cabinet. The adjustment component has a second arc-shaped portion fitted with the first arc-shaped portion. The first arc-shaped portion and the second arc-shaped portion are slidingly matching with two elastic beads along an arc through a staggered double V-shaped groove group. The first arc-shaped portion and the second arc-shaped portion are locked through the pressing lock assembly after sliding along the arc.

The staggered double V-shaped groove group is provided on a side of the first arc-shaped portion close to the second arc-shaped portion, and the two elastic beads are provided on the second arc-shaped portion.

The staggered double V-shaped groove group includes a first V-shaped groove group for slidingly matching with one of the two elastic beads along the arc and a second V-shaped groove group for slidingly matching with another one of the two elastic beads along the arc. The second V-shaped groove group is located along an extending direction of the first V-shaped groove group.

In an embodiment, the first V-shaped groove group includes a plurality of first V-shaped grooves arranged side by side along an extending direction of the first arc-shaped portion. A first transition groove is provided between adjacent first V-shaped grooves. The second V-shaped groove group includes a plurality of second V-shaped grooves arranged side by side along an extending direction of the first arc-shaped portion; and a second transition groove is provided between adjacent second V-shaped grooves.

In an embodiment, a side of the first arc-shaped portion away from the second arc-shaped portion is provided with an arc-shaped slot hole with a scale line. The second arc-shaped portion is provided with an installation slot of the pressing lock assembly corresponding to the arc-shaped slot hole. The pressing lock assembly is installed in the installation slot of the pressing lock assembly through the arc-shaped slot hole, and the second arc-shaped portion and the first arc-shaped portion are locked after sliding along the arc.

In an embodiment, two arc blocks are provided on both sides of the arc-shaped slot hole, a surface of each of the two arc blocks is provided with first serrations along an extending direction of the surface. The pressing lock assembly includes a handle shaft, a second spring, a T-shaped pressing block and a pressing handle. A fixed end of the handle shaft is passed through the arc-shaped slot hole and fixed on a bottom end of the installation slot of the pressing lock assembly. The second spring and the T-shaped pressing block are sequentially sleeved on a hinged end of the handle shaft, and the pressing handle is hinged on the hinged end of the handle shaft; one end of the pressing handle hinged to the handle shaft is connected to an outer side of the T-shaped pressing block. An inner side of the T-shaped pressing block is provided with second serrations meshing with the first serrations of each of the two arc blocks.

In an embodiment, the staggered double V-shaped groove group is provided on a side surface of the second arc-shaped portion towards the first arc-shaped portion and the two elastic beads are respectively installed on the first arc-shaped portion.

In an embodiment, the staggered double V-shaped groove group includes a first V-shaped groove group for slidingly matching with one of the two elastic beads along the arc and a second V-shaped groove group for slidingly matching with another one of the two elastic beads along the arc. The first V-shaped groove group includes a plurality of first V-shaped grooves arranged side by side along an extending direction of the second arc-shaped portion; a first transition groove is provided between the adjacent first V-shaped grooves. The second V-shaped groove group includes a plurality of second V-shaped grooves arranged side by side along an extending direction of the second arc-shaped portion; and a second transition groove is provided between the adjacent second V-shaped grooves.

In an embodiment, the arc-shaped adjustment lock further includes a quick-lock assembly. The adjustment component is connected to the second LED cabinet through the quick-lock assembly.

In an embodiment, the adjustment component further includes a straight plate installation surface or a straight plate portion located at one end of the second arc-shaped portion. A lock hole is provided on the straight plate installation surface or the straight plate portion. The quick-lock assembly includes a lock cylinder shaft installed on the second LED cabinet, a shaft sleeve with a handle that drives the lock cylinder shaft to rotate, and a third spring that drives the lock cylinder shaft to reset.

In an embodiment, a limit protrusion is provided on the straight plate installation surface or a side surface of the straight plate portion connected to the second LED cabinet, to limit and cooperate with the limit groove provided on the second LED cabinet.

The details of one or more embodiments of the present disclosure are set forth in the accompanying drawings and the description below. Other features, objects and advantages of the present disclosure will become apparent from the specification, drawings and claims.

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative labor.

The specific embodiments of the present disclosure will be further described below with reference to the accompanying drawings. It should be noted herein that the descriptions of these embodiments are used to help the understanding of the present disclosure, but do not constitute a limitation to the present disclosure. In addition, the technical features involved in the various embodiments of the present disclosure described below can be combined with each other as long as they do not conflict with each other.

As shown in <FIG> and <FIG>, the present disclosure provides an arc-shaped adjustment lock <NUM>. The arc-shaped adjustment lock <NUM> includes a base <NUM>, an adjustment component <NUM>, a pressing lock assembly <NUM> and a quick-lock assembly <NUM>. The base <NUM> is connected to a first LED cabinet <NUM>. The base <NUM> has a first arc-shaped portion <NUM>. The adjustment component <NUM> is connected to a second LED cabinet <NUM> through the quick-lock assembly <NUM>. The adjustment component <NUM> has a second arc-shaped portion <NUM> fitted with the first arc-shaped portion <NUM>. The first arc-shaped portion <NUM> and the second arc-shaped portion <NUM> are slidingly matching with two elastic beads <NUM> along an arc through a staggered double V-shaped groove group <NUM>, and the first arc-shaped portion <NUM> and the second arc-shaped portion <NUM> are locked through the pressing lock assembly <NUM> after sliding along the arc.

In this embodiment, as shown in <FIG>, the staggered double V-shaped groove group <NUM> is provided on a side of the first arc-shaped portion <NUM> close to the second arc-shaped portion <NUM>, and the two elastic beads <NUM> are respectively provided on the second arc-shaped portion <NUM>. The staggered double V-shaped groove group <NUM> includes a first V-shaped groove group <NUM> for slidingly matching with one of the two elastic beads <NUM> along the arc and a second V-shaped groove group <NUM> for slidingly matching with another one of the two elastic beads <NUM> along the arc, and the second V-shaped groove group <NUM> is located along an extending direction of the first V-shaped groove group <NUM>. The first V-shaped groove group <NUM> includes a plurality of first V-shaped grooves <NUM> arranged side by side along the extending direction of the first arc-shaped portion <NUM>. A first transition groove <NUM> is provided between adjacent first V-shaped grooves <NUM>. A depth of a first V-shaped groove <NUM> is greater than a depth of the first transition groove <NUM>. The second V-shaped groove group <NUM> includes a plurality of second V-shaped grooves <NUM> arranged side by side along the extending direction of the first arc-shaped portion <NUM>. A second transition groove <NUM> is provided between adjacent second V-shaped grooves <NUM>. A depth of a second V-shaped groove <NUM> is greater than a depth of the second transition groove <NUM>. Each section of a V-shaped groove (i.e., the first V-shaped groove group <NUM> or the second V-shaped groove group <NUM>) has a scale of <NUM> degrees, and the offset is <NUM> degrees to adjust the angle adjustment within <NUM> degrees. When one elastic bead <NUM> is located in the first V-shaped groove <NUM> or the second V-shaped groove <NUM>, the other elastic bead <NUM> is located in the second transition groove <NUM> or the first transition groove <NUM>.

As shown in <FIG>, the second arc-shaped portion <NUM> is provided with two elastic bead installation grooves, and the two elastic beads <NUM> are installed on the two elastic bead installation grooves in a one-to-one correspondence. Each elastic bead <NUM> includes an elastic bead body <NUM> and a first spring <NUM>, and the first spring <NUM> abuts between the elastic bead body <NUM> and a bottom wall of the elastic bead installation groove. One side of the second arc-shaped portion <NUM> is further provided with an arc-shaped guide groove, and an extending direction of the arc-shaped guide groove is the same as that of the second arc-shaped portion <NUM>. One side of the base <NUM> is provided with an arc-shaped guide block <NUM> adapted to the arc-shaped guide groove, which can play a certain guiding and limiting role when the arc sliding between the second arc-shaped portion <NUM> and the first arc-shaped portion <NUM> is performed. The second arc-shaped portion <NUM> is slidingly matching with the first arc-shaped portion <NUM> along the arc through the arc-shaped guide block <NUM> and the arc-shaped guide groove.

As shown in <FIG> and <FIG>, a side of the first arc-shaped portion <NUM> away from the second arc-shaped portion <NUM> is further provided with an arc-shaped slot hole <NUM> with a scale line. When the scale is <NUM> degrees, the elastic bead <NUM> corresponding to the second V-shaped groove group <NUM> is located in the middle position of <NUM> degrees between <NUM> degrees and <NUM> degrees, that is, located in the second transition groove <NUM>. The elastic bead <NUM> corresponding to the first V-shaped groove group <NUM> is inserted into the first V-shaped groove <NUM> to achieve an angle limit of <NUM> degrees. The second arc-shaped portion <NUM> is provided with an installation slot of the pressing lock assembly corresponding to the arc-shaped slot hole <NUM>. The pressing lock assembly <NUM> is installed in the installation slot of the pressing lock assembly through the arc-shaped slot hole <NUM>, and the second arc-shaped portion <NUM> and the first arc-shaped portion <NUM> are locked after sliding along the arc. Two arc blocks <NUM> are provided on both sides of the arc-shaped slot hole <NUM>, a surface of each of the two arc blocks <NUM> is provided with first serrations <NUM> along an extending direction of the surface. The pressing lock assembly <NUM> includes a handle shaft <NUM>, a second spring <NUM>, a T-shaped pressing block <NUM> and a pressing handle <NUM>. A fixed end of the handle shaft <NUM> passes through the arc-shaped slot hole <NUM> and is fixed on a bottom end of the installation slot of the pressing lock assembly. The second spring <NUM> and the T-shaped pressing block <NUM> are sequentially sleeved on a hinged end of the handle shaft <NUM>, and the pressing handle <NUM> is hinged on the hinged end of the handle shaft <NUM>. One end of the pressing handle <NUM> hinged to the handle shaft <NUM> is connected to an outer side of the T-shaped pressing block <NUM>. An inner side of the T-shaped pressing block <NUM> is provided with second serrations <NUM> meshing with the first serrations <NUM> of each of the two arc blocks <NUM>. When the pressing handle <NUM> is pressed downward, the second serrations <NUM> inside the T-shaped pressing block <NUM> are meshed with the first serrations <NUM> of each arc block <NUM>, and the whole is in a pressed state. When the pressing handle <NUM> is rotated upward, the T-shaped pressing block <NUM> bounces up under the elastic restoring action of the second spring <NUM>, and the second serrations <NUM> inside the T-shaped pressing block <NUM> are separated from the first serrations <NUM> of each arc block <NUM>.

As shown in <FIG> and <FIG>, one end of the second arc-shaped portion <NUM> is a straight plate installation surface <NUM>. A lock hole <NUM> is provided on the straight plate installation surface <NUM>. The quick-lock assembly <NUM> includes a lock cylinder shaft <NUM> installed on the second LED cabinet <NUM>, a shaft sleeve <NUM> with a handle that drives the lock cylinder shaft <NUM> to rotate, and a third spring <NUM> that drives the lock cylinder shaft <NUM> to reset. When the lock cylinder shaft <NUM> is pushed into the lock hole <NUM> in the horizontal direction, and rotated <NUM> degrees, the straight plate installation surface <NUM> and the second LED cabinet <NUM> can be locked tightly. Further, the first LED cabinet <NUM> and the second LED cabinet <NUM> are locked. In addition, the side surface of the straight plate installation surface <NUM> that is connected to the second LED cabinet <NUM> is provided with a limit protrusion <NUM> to limit and cooperate with the limit groove provided on the second LED cabinet <NUM>. The gap is only <NUM> to ensure that the cabinet will not be dislocated up and down.

As shown in <FIG> and <FIG>, the present disclosure provides an arc-shaped adjustment lock <NUM>. Compared with the arc-shaped adjustment lock <NUM>, the differences are as follows. The staggered double V-shaped groove group <NUM> is provided on the side surface of the second arc-shaped portion <NUM> towards the first arc-shaped portion <NUM>. The two elastic beads <NUM> are respectively installed on the first arc-shaped portion <NUM>. The staggered double V-shaped groove group <NUM> includes a first V-shaped groove group for slidingly matching with one of the two elastic beads <NUM> along the arc and a second V-shaped groove group <NUM> for slidingly matching with another one of the two elastic beads <NUM> along the arc. The first V-shaped groove group includes a plurality of first V-shaped grooves <NUM> arranged side by side along the extending direction of the second arc-shaped portion <NUM>. A first transition groove <NUM> is provided between the adjacent first V-shaped grooves <NUM>. A depth of the first V-shaped groove <NUM> is greater than a depth of the first transition groove <NUM>. The second V-shaped groove group <NUM> includes a plurality of second V-shaped grooves <NUM> arranged side by side along the extending direction of the second arc-shaped portion <NUM>. A second transition groove <NUM> is provided between the adjacent second V-shaped grooves <NUM>. A depth of the second V-shaped groove <NUM> is greater than a depth of the second transition groove <NUM>. Each section of the V-shaped groove (i.e., the first V-shaped groove group or the second V-shaped groove group <NUM>) has a scale of <NUM> degrees, and the offset is <NUM> degrees to adjust the angle within <NUM> degrees. When one elastic bead <NUM> is located in the first V-shaped groove <NUM> or the second V-shaped groove <NUM>, the other elastic bead <NUM> is located in the second transition groove <NUM> or the first transition groove <NUM>.

As shown in <FIG> and <FIG>, the first arc-shaped portion <NUM> is provided with two elastic bead installation grooves <NUM>, and the two elastic beads <NUM> are installed on the two elastic bead installation grooves <NUM> in a one-to-one correspondence. The elastic bead <NUM> includes an elastic bead body <NUM> and a first spring <NUM>, and the first spring <NUM> abuts between the elastic bead body <NUM> and the bottom wall of the elastic bead installation groove <NUM>. One side of the second arc-shaped portion <NUM> is further provided with an arc-shaped guide groove, and an extending direction of the arc-shaped guide groove is the same as that of the second arc-shaped portion <NUM>. One side of the base <NUM> is provided with an arc-shaped guide block <NUM> adapted to the arc-shaped guide groove, which can play a certain guiding and limiting role when the arc sliding between the second arc-shaped portion <NUM> and the first arc-shaped portion <NUM> is performed. The second arc-shaped portion <NUM> is slidingly matching with the first arc-shaped portion <NUM> along the arc through the arc-shaped guide block <NUM> and the arc-shaped guide groove.

As shown in <FIG> and <FIG>, the adjustment component <NUM> further includes a straight plate portion <NUM> located at one end of the second arc-shaped portion <NUM>. The straight plate portion <NUM> is provided with a lock hole <NUM>. The quick-lock assembly <NUM> includes a lock cylinder shaft installed on the second LED cabinet <NUM>, a shaft sleeve with a handle that drives the lock cylinder shaft to rotate, and a third spring that drives the lock cylinder shaft to reset. When the lock cylinder shaft is pushed into the lock hole <NUM> in the horizontal direction, and rotated <NUM> degrees, the straight plate portion <NUM> and the second LED cabinet <NUM> can be locked tightly. Further, the first LED cabinet <NUM> and the second LED cabinet <NUM> are locked. In addition, a side surface of the straight plate portion <NUM> that is connected to the second LED cabinet <NUM> is provided with a limit protrusion <NUM> to limit and cooperate with the limit groove provided on the second LED cabinet <NUM>. The gap is only <NUM> to ensure that the cabinet will not be dislocated up and down.

Claim 1:
An arc-shaped adjustment lock (<NUM>), comprising:
a base (<NUM>);
an adjustment component (<NUM>); and
a pressing lock assembly (<NUM>),
wherein:
the base (<NUM>) is connectable to a first LED cabinet (<NUM>);
the base (<NUM>) has a first arc-shaped portion (<NUM>);
the adjustment component (<NUM>) is connectable to a second LED cabinet (<NUM>);
the adjustment component (<NUM>) has a second arc-shaped portion (<NUM>) fitted
with the first arc-shaped portion (<NUM>); the first arc-shaped portion (<NUM>) and the second arc-shaped portion (<NUM>) are locked through the pressing lock assembly (<NUM>) after sliding along the arc;
characterized in that, the first arc-shaped portion (<NUM>) and the second arc-shaped portion (<NUM>) slidingly match with two elastic beads (<NUM>) along an arc through a staggered double V-shaped groove group (<NUM>);
the staggered double V-shaped groove group (<NUM>) is provided on a side of the first arc-shaped portion (<NUM>) close to the second arc-shaped portion (<NUM>);
the two elastic beads (<NUM>) are provided on the second arc-shaped portion (<NUM>),
the staggered double V-shaped groove group (<NUM>) comprises a first V-shaped groove group (<NUM>) for slidingly matching with one of the two elastic beads (<NUM>) along the arc and a second V-shaped groove group (<NUM>) for slidingly matching with another one of the two elastic beads (<NUM>) along the arc; and
the second V-shaped groove group (<NUM>) is located along an extending direction of the first V-shaped groove group (<NUM>).