CN110848540A - Automatic release hasp and display screen subassembly - Google Patents

Abstract

The automatic release lock catch comprises a first lock part, a second lock part and a locking mechanism, wherein the first lock part is provided with a guide sleeve, a first hole part and a bolt, and the bolt extends into the first hole part or retracts from the first hole part; the second lock part is provided with a first check piece and a sliding block, when the first check piece is inserted into the first hole part, the front end of the first check piece drives the bolt to retract from the first hole part and cross the bolt, when the front end of the first check piece crosses the bolt, the bolt extends into the first hole part, the first check piece is limited relative to the first hole part to be pulled out by the bolt, the sliding block is slidably arranged at the rear end of the first check piece, when the first check piece is further inserted into the first hole part, the sliding block drives the bolt to retract from the first hole part and cross the bolt, after the sliding block crosses the bolt, when the second lock part is forced in the direction of pulling out the first hole part, the first check piece and the sliding block drive the bolt to retract from the first hole part. The lock catch can be automatically released, and the use convenience of the lock catch is improved.

Description

Automatic release hasp and display screen subassembly

Technical Field

The invention relates to the technical field of latches, in particular to an automatic release latch, and further relates to a display screen assembly.

Background

Various ways of fixing the two parts are known, such as screwing, snap-fit connection, etc. For example, when the known LED display screen assembly is installed, screws and connecting pieces are generally used to fixedly install the LED display screen assembly on a steel structure or a wall. Through screw and connection piece, although can firmly install LED display screen subassembly on the steel construction, there is the installation process loaded down with trivial details such as must prepare screw, connection piece, spanner, screw pen etc. equally, the dismantlement process need go on according to certain order again, otherwise can't dismantle.

In addition, although there are also some LED display panel assemblies fixed by using a lock, for example, a rotating member having a claw is provided on the LED display panel assembly, a fastening shaft is provided on a steel structure, a wall body or other rental structure, and the rotating member is rotated by using, for example, a socket wrench to be fastened to or detached from the fastening shaft when the LED display panel assembly is mounted or dismounted. Although this type of latch is convenient compared to a screw fixing method, it also requires the use of tools, and for an operator, it is necessary to support the LED display panel assembly while operating a wrench, and for safety, it usually requires 2 to 3 persons to assemble and disassemble the display panel assembly.

Disclosure of Invention

Aiming at the technical problems, the invention provides an automatic release lock catch in order to improve the use convenience of the lock catch, and in addition, the invention also provides a display screen assembly using the automatic release lock catch.

A first lock unit having a guide bush provided with a first hole penetrating at least one axial end thereof, and a plug provided to extend into or retract from the first hole in a direction intersecting the axial direction of the first hole; a second lock portion that is insertable into and removable from the first lock portion, the second lock portion having a first check member that is inserted into the first hole portion, a front end of the first check member driving the plug pin to retract from the first hole portion and pass over the plug pin, the plug pin extending into the first hole portion after the front end of the first check member passes over the plug pin, the removal of the first check member from the first hole portion being restricted by the plug pin, a slider that is provided at a rear end of the first check member and slides in an axial direction of the first check member, the slider driving the plug pin to retract from the first hole portion and pass over the plug pin when the first check member is further inserted into the first hole portion, the slider passing over the plug pin, and the second lock portion being urged in a direction of being removed from the first hole portion when the slider passes over the plug pin, the first check and the slider drive the latch to retract from the first hole portion.

Preferably, a front end of the plug extends into the first hole, the front end of the plug is provided with a first guide surface on a side facing an inlet of the first hole, and a first locking surface on a side facing away from the inlet of the first hole.

Further preferably, a second guide surface is arranged at the front end of the first check piece, and a second clamping surface is arranged behind the second guide surface; when the first check piece is inserted into the first hole part, the second guide surface is abutted with the first guide surface, and the bolt is driven to retract from the first hole part; after the front end of the first check piece passes over the bolt, the bolt extends into the first hole, and the second clamping surface is attached to the first clamping surface.

Further preferably, a third guide surface is arranged at the rear end of the sliding block; when the first check piece is further inserted into the first hole part, the sliding block abuts against the first guide surface and drives the bolt to retract and cross the bolt; when the second lock portion is urged in a direction of pulling out the second lock portion from the first hole portion after the slider passes over the plug pin, the plug pin abuts against the third guide surface, and is driven to retract by sliding along the third guide surface.

Further preferably, a fourth guide surface is provided at a front end of the slider, and the fourth guide surface abuts against the first guide surface when the first check member is further inserted into the first hole.

Preferably, the front end of the first check piece is provided with a first driving block, the rear end of the sliding block is provided with a first spring, and the first spring pushes the sliding block to be attached to the first driving block along the axial direction of the first check piece.

Preferably, the second lock portion further has a base to which the first check member is attached, and a first restriction member is provided between the base and the guide sleeve, and insertion of the second lock portion with respect to the first lock portion is restricted by the first restriction member after a front end of the first check member passes over the plug pin.

Further preferably, the first restriction member is a spring member.

Preferably, two radial sides of the guide sleeve are respectively provided with a second hole penetrating through the guide sleeve, the plug pin is embedded into the second hole, the second hole is further embedded with a second spring, and the second spring pushes the plug pin towards a direction that the plug pin extends to the first hole.

The display screen assembly comprises a display screen box body; the automatic release latch of any of the above, wherein the first lock portion is mounted to the display screen housing and the second lock portion is secured to a location where the display screen assembly is mounted, or wherein the second lock portion is mounted to the display screen housing and the first lock portion is secured to a location where the display screen assembly is mounted.

The automatic release lock catch of the present invention is provided with the latch, the first check member and the slider, so that when the first check member is inserted into the first hole of the guide bush, the pull-out of the first check member from the first hole is restricted by the latch, and therefore, the automatic release lock catch can be reliably locked. And after the first check piece is further inserted into the first hole part and the slide block passes over the bolt, when the second lock part is forced in the direction of pulling out the second lock part from the first hole part, the first check piece and the slide block drive the bolt to retract from the first hole part, so that the automatic release of the lock catch can be realized, and the use convenience of the lock catch is improved. The display screen assembly provided with the automatic release lock catch is more convenient to assemble and disassemble.

Drawings

FIG. 1 is a schematic view of one embodiment of an automatic release latch of the present invention;

figure 2 is an axial cross-sectional view of the first and second lock portions of figure 1;

fig. 3 is a schematic view showing that the first check member is inserted into the first hole portion of the guide bush and the withdrawal from the first hole portion is restricted;

fig. 4 is a view illustrating the mutual automatic release of the first lock portion and the second lock portion, in which (a) is a schematic view in which a front end of the slider abuts against the plug pin, and (b) is a schematic view in which the slider passes over the plug pin in a direction in which the first check member is inserted into the first hole portion;

figure 5 is a diagram further illustrating the automatic release of the first and second lock portions from each other;

FIG. 6 is a schematic view of one embodiment of a display screen assembly using the automatic release latch of FIG. 1;

fig. 7 is a partial cross-sectional view of the display screen assembly of fig. 6.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the present invention can be implemented in many different ways and is not limited to the embodiments described herein, but rather these embodiments are provided to enable those skilled in the art to understand the disclosure more thoroughly.

In the description of the embodiments of the present invention, if an orientation description is referred to, for example, the orientations or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the orientations or positional relationships shown in the drawings, only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the embodiments of the present invention, if a feature is referred to as being "disposed", "fixed", "connected", or "mounted" to another feature, it may be directly disposed, fixed, or connected to the other feature or may be indirectly disposed, fixed, connected, or mounted to the other feature. In the description of the embodiments of the present invention, if "a number" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "greater than", "lower" or "inner" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.

Fig. 1 is a schematic view of an embodiment of an automatic release lock 100, fig. 2 is an axial cross-sectional view of a first lock portion 1 and a second lock portion 2, and referring to fig. 1 and 2, the automatic release lock 100 includes the first lock portion 1 and the second lock portion 2 that is insertable into and removable from the first lock portion 1, and here, although the second lock portion 2 is described to be insertable into and removable from the first lock portion 1, the primary and secondary relationship therebetween is not limited as long as they can be inserted into and removed from each other. For example, the first lock part 1 may be mounted on a member to be detached, such as an LED display panel assembly, and the second lock part 2 may be mounted on a fixing member, such as a steel structure or a wall, or the second lock part 2 may be mounted on a member to be detached, and the first lock part 1 may be mounted on the fixing member.

The first lock part 1 has a guide sleeve 11 and a latch 12, the guide sleeve 11 is provided with a first hole 111 penetrating at least one axial end of the guide sleeve 11, preferably, the first hole 111 penetrates only one axial end of the guide sleeve 11, and the other end of the guide sleeve 11 is provided with a guide sleeve mounting hole 114 for fixing the guide sleeve 11. The plug pin 12 is provided to extend into the first hole portion 111 or to retract from the first hole portion 111 in a direction intersecting the axial direction of the first hole portion 111, and although it is sufficient if the plug pin 12 and the axial direction of the first hole portion 111 are inserted into the first hole portion 111 non-coaxially, in order to balance between extension and retraction, the plug pin 12 is provided to extend into the first hole portion 111 or to retract from the first hole portion 111 in a direction perpendicular to the axial direction of the first hole portion 111. Preferably, the plug 12 may be directly mounted to the guide bush 11. Specifically, on both sides of the guide bush 11 in the radial direction, second hole portions 112 penetrating the guide bush 11 are respectively provided, the axial direction of the second hole portions 112 is perpendicular to the axial direction of the first hole portion 111, on the outer side of the guide bush 11, at two second hole portions 112, pin mounting plates 115 are mounted, the rear end 12b of the pin 12 is slidably mounted on the pin mounting plates 115, the pin 12 is inserted into the second hole portions 112, and the front end 12a of the pin 12 is extendable into the first hole portion 111. In order to automatically extend the front end 12a of the plug 12 into the first hole 111, a second spring 113 is fitted into the second hole 112, one end of the second spring 113 abuts against the plug mounting plate 115, and the other end of the second spring 113 abuts against the plug 12, whereby the second spring 113 urges the plug 12 in a direction in which the plug 12 extends into the first hole 111.

Fig. 3 is a schematic view showing that the first check member 21 is inserted into the first hole part 111 of the guide bush 11 and the withdrawal of the first check member with respect to the first hole part 111 is restricted, and referring to fig. 3, the second lock part 2 has the first check member 21 and the slider 22, the first check member 21 is inserted into the first hole part 111 and is slidable in the first hole part 111, and when the first check member 21 is inserted into the first hole part 111, the front end 21a of the first check member 21 drives the plug pin 12 to retract from the first hole part 111, whereby the front end 21a of the first check member 21 passes over the plug pin 12, and after the front end 21a of the first check member 21 passes over the plug pin 12, the plug pin 12 is inserted into the first hole part 111, and the withdrawal of the first check member 21 with respect to the first hole part 111 is restricted by the plug pin 12.

The slider 22 is provided at the rear end 21b of the first check member 21 and slides in the axial direction of the first check member 21, and the slider 22 may be directly fitted over the first check member 21. After the front end 21a of the first check 21 passes over the plug pin 12, when the first check 21 is further inserted into the first hole portion 111 in the direction in which the first check 21 is inserted into the first hole portion 111, i.e., the first check 21 continues to slide in the first hole portion 111, the slider 22 abuts the plug pin 12 and drives the plug pin 12 to retract from the first hole portion 111. Thus, when the slider 22 also passes over the plug 12 in the direction in which the first check member 21 is inserted into the first hole 111 and the second lock portion 2 is biased in the direction in which the second lock portion 2 is pulled out from the first hole 111 after the slider 22 passes over the plug 12, the first check member 21 and the slider 22 drive the plug 12 to retract from the first hole 111, whereby the second lock portion 2 (i.e., the first check member 21 and the slider 22) can be pulled out from the first hole 111. Here, the first check member 21 may slide in the first hole 111, and the first check member 21 may be fixed and the guide bush 11 may slide with respect to the first check member 21; the condition that the guide sleeve 11 is fixed and the first check piece 21 slides relative to the guide sleeve 11 can also be included; it is also possible to include the case where the guide bush 11 and the first check member 21 slide simultaneously.

Fig. 4 is a diagram illustrating the mutual automatic release of the first lock portion 1 and the second lock portion 2, where (a) is a schematic diagram illustrating the front end 22a of the slider 22 abutting the plug 12, (b) is a schematic diagram illustrating the slider 22 passing over the plug 12 in the direction in which the first check member 21 is inserted into the first hole portion 111, fig. 5 is a diagram further illustrating the mutual automatic release of the first lock portion 1 and the second lock portion 2, and the first check member 21 and the slider 22 are explained in more detail below with reference to fig. 4 and 5.

Preferably, the front end 12a of the plug 12 is provided with a first guide surface 121 on a side facing the inlet of the first hole part 111, and the first guide surface 121 may be provided as a curved surface or an inclined surface. The front end 12a of the plug 12 is provided with a first locking surface 122 on a side facing away from the entrance of the first hole 111, and the first locking surface 122 is provided perpendicular to the axial direction of the first hole 111. The front end 21a of the first check member 21 is provided with a second guide surface 211, and a second locking surface 212 is provided behind the second guide surface 211. For example, it is preferable that the front end 21a of the first check member 21 is provided with a first driving piece 23, the first driving piece 23 may be a tapered end having a hemispherical shape, a hemispherical surface of the tapered end is the second guide surface 211, a hemispherical rear surface of the tapered end is the second locking surface 212, and the second locking surface 212 has a planar shape perpendicular to the axial direction of the first hole 111. Thus, when the first check member 21 is inserted into the first hole 111, the hemispherical second guide surface 211 abuts against the curved or inclined first guide surface 121, and the plug pin 12 is driven to retract from the first hole 111; when the front end 21a of the first check member 21, i.e., the lock head, passes over the plug pin 12, the plug pin 12 extends into the first hole 111, and the second locking surface 212 and the first locking surface 122 are fitted to each other. Thus, the first check member 21 can easily drive the plug pin 12 to retract and be inserted into the first hole 111, and when the second guide surface 211 provided on the first check member 21 and the first locking surface 122 provided on the side of the plug pin 12 facing away from the entrance of the first hole 111 are bonded, the first check member 21 is restricted from being pulled out from the first hole 111, and the first lock portion 1 and the second lock portion 2 are restricted from being pulled out from each other.

In order to prevent the first lock portion 1 and the second lock portion 2 from being relatively fixed to each other by preventing the first lock head, which is the first driving block 23 of the front end 21a of the first check member 21, from being continuously inserted into and removed from each other after the first lock head passes over the plug pin 12, the second lock portion 2 preferably further includes a base 25, the first check member 21 is attached to the base 25, a first stopper 26 is provided between the base 25 and the guide bush 11, one end of the first stopper 26 abuts against the base 25, the other end abuts against the guide bush 11, and the second lock portion 2 is prevented from being inserted into the first lock portion 1 by the first stopper 26 after the front end 21a of the first check member 21 passes over the plug pin 12. This prevents the first check member 21 from being inserted further into the first hole 111 and the slider 22 from passing over the plug 12 due to an accidental situation. Preferably, the first restriction member 26 may be selected as a spring member, for example, a coil spring, and after the coil spring is compressed by applying an external force so that the first check member 21 is inserted into the first hole portion 111 and the front end 21a of the first check member 21 passes over the plug pin 12, it is difficult to further compress the spring due to a restoring force of the spring without an active external force, so that the first check member 21 can be prevented from being further inserted into the first hole portion 111. In the following description, when the first lock portion 1 and the second lock portion 2 are automatically released, the first check member 21 needs to be inserted further into the first hole 111 after the front end 21a of the first check member 21 passes over the plug 12, so that the size of the spring member is also moderate, and it is possible to prevent the difficulty of automatic release of the first lock portion 1 and the second lock portion 2 due to an excessive compression force.

As described above, in the self-releasing lock catch 100 of the present embodiment, in order to enable the lock catch, i.e., the first lock portion 1 and the second lock portion 2, to be automatically released from each other, the second lock portion 2 includes the slider 22, and after the lock cylinder at the front end 21a of the first check member 21 passes over the plug pin 12, when the first check member 21 is further inserted into the first hole portion 111, the slider 22 abuts against the first guide surface 121 at the front end 12a of the plug pin 12, and the plug pin 12 is driven to retract and pass over the plug pin 12. Preferably, in order to make it easier for the slider 22 to pass over the plug 12, the front end 22a of the slider 22 is provided with a fourth guide surface 222, and when the first check member 21 is further inserted into the first hole 111, the fourth guide surface 222 abuts against the first guide surface 121, thereby retracting the first guide surface 121 while sliding along the fourth guide surface 222.

Preferably, in order to make the second lock portion 2 more easily removed (automatically released) from the first lock portion 1, the rear end 22b of the slider 22 is provided with a third guide surface 221, and when the slider 22 passes over the plug 12 and is biased in a direction in which the second lock portion 2 is removed from the first hole 111, the plug 12 abuts against the third guide surface 221 and slides along the third guide surface 221 to be driven and retracted. More preferably, in order to make the plug pin 12 slide along the third guide surface 221 more easily, the plug pin 12 may be beveled or rounded at a lower portion of the first stopping surface 122. When the plug 12 is driven to retract from the first hole 111, the second lock part 2 can be easily pulled out with respect to the first lock part 1. Since the slider 22 is slidable on the first check member 21, when the plug pin 12 slides along the third guide surface 221, the slider 22 is pushed in the axial direction of the first check member 21 to abut against the front end 21a of the first check member 21, specifically, behind the first driving block 23 located at the front end 21a of the first check member 21 (i.e., behind the lock head), whereby it is possible to ensure that the first driving block 23 and the slider 22 abut against each other and are in a state of always pressing the plug pin 12 to retract, thereby facilitating automatic release of the first lock part 1 and the second lock part from each other. Further preferably, in order to make the slider 22 and the first driving block 23 more stably attached, the rear end 22b of the slider 22 is provided with a first spring 24, and the first spring 24 urges the slider 22 to attach the first driving block 23 in the axial direction of the first check member 21. Specifically, for example, the slider 22 is fitted over the first check 21, and one end of the first spring 24 abuts against the base 25 and the other end abuts against the slider 22. The first spring 24 may be a round wire coil spring with a smaller elastic force, and the elastic force of the first spring 24 is insufficient to make the slider 22 drive the latch 12 to retract, but after further inserting the first check member 21 into the first hole portion 111 and making the slider 22 pass over the latch 12, the first spring 24 can drive the slider 22 to fit the first driving block 23. Still further preferably, a containing cavity 231 is arranged behind the first driving block 23, and the first spring 24 pushes the slider 22 to be contained in the containing cavity 231 and to be attached to the first driving block 23. The slider 22 and the first drive block 23 may have a substantially spherical shape as a whole after being attached, thereby facilitating automatic release of the first lock portion 1 and the second lock portion 2.

Fig. 6 is a schematic view of an example of a display panel assembly 300 using the automatic release latch 100 of fig. 1, fig. 7 is a partial sectional view of the display panel assembly 300, and referring to fig. 6 and 7, the automatic release latch 100 of the present embodiment can be applied to various applications, for example, to the installation of an LED display panel assembly 300. Specifically, the display screen assembly 300 includes a display screen box 200 and the above-mentioned automatic release latch 100, wherein the first lock portion 1 is mounted on the display screen box 200, and the second lock portion 2 is fixed to a position where the display screen assembly 300 is mounted, for example, a steel structure 400 where the display screen assembly 300 is mounted, a wall body, or a rental mounting structure of the display screen assembly 300. Alternatively, the second lock portion 2 may be attached to the display panel case 200, and the first lock portion 1 may be fixed to the display panel assembly 300 at the attached position.

The various features described in the foregoing detailed description may be combined in any manner and, for the sake of unnecessary repetition, various combinations are not intended to be encompassed by the invention.

The above embodiments are merely illustrative of the technical solutions of the present invention and are not restrictive, and any modifications or equivalent substitutions which do not depart from the scope of the present invention should be included in the technical solutions of the present invention.

Claims (10)

1. An automatic release latch, comprising

A first lock part having

A guide sleeve, wherein the guide sleeve is provided with a first hole part which at least penetrates through one axial end of the guide sleeve,

a plug pin provided to extend into or retract from the first hole portion in a direction intersecting with an axial direction of the first hole portion;

a second lock portion that is insertable into and removable from the first lock portion, the second lock portion having

A first check member inserted into the first hole portion, a front end of the first check member driving the bolt to retract from the first hole portion and to pass over the bolt, the bolt extending into the first hole portion after the front end of the first check member passes over the bolt, withdrawal of the first check member with respect to the first hole portion being restricted by the bolt,

and a slider provided at a rear end of the first check member and sliding in an axial direction of the first check member, wherein when the first check member is further inserted into the first hole, the slider drives the plug pin to retract from the first hole and to pass over the plug pin, and when the second lock portion is forced in a direction of being pulled out from the first hole after the slider passes over the plug pin, the first check member and the slider drive the plug pin to retract from the first hole.

2. An auto-releasing latch as claimed in claim 1, wherein the front end of the bolt projects into the first bore section, the front end of the bolt being provided with a first guide surface on the side facing the entrance of the first bore section and a first blocking surface on the side facing away from the entrance of the first bore section.

3. The automatic release latch of claim 2 wherein the front end of the first backstop is provided with a second guide surface and the back of the second guide surface is provided with a second detent surface;

when the first check piece is inserted into the first hole part, the second guide surface is abutted with the first guide surface, and the bolt is driven to retract from the first hole part;

after the front end of the first check piece passes over the bolt, the bolt extends into the first hole, and the second clamping surface is attached to the first clamping surface.

4. The automatic release latch of claim 2 wherein the back end of the slider is provided with a third guide surface;

when the first check piece is further inserted into the first hole part, the sliding block abuts against the first guide surface and drives the bolt to retract and cross the bolt;

when the second lock portion is urged in a direction of pulling out the second lock portion from the first hole portion after the slider passes over the plug pin, the plug pin abuts against the third guide surface, and is driven to retract by sliding along the third guide surface.

5. The automatic release latch of claim 4 wherein the forward end of the slider is provided with a fourth guide surface, the fourth guide surface abutting the first guide surface when the first check member is further inserted into the first bore portion.

6. The automatic release latch of any one of claims 1 to 5 wherein the front end of the first backstop is provided with a first drive block and the rear end of the slider is provided with a first spring urging the slider against the first drive block in the axial direction of the first backstop.

7. The self-releasing latch as claimed in any one of claims 1 to 5, wherein said second lock portion further has a base to which said first check member is attached, and a first restriction member is provided between said base and said guide sleeve, and insertion of said second lock portion with respect to said first lock portion is restricted by said first restriction member after a front end of said first check member passes over said latch pin.

8. An automatic release latch as claimed in claim 7, wherein said first limiting member is a spring member.

9. The automatic release latch as claimed in any one of claims 1 to 5, wherein the guide sleeve is provided at both sides in a radial direction thereof with second hole portions penetrating the guide sleeve, the latch pin is inserted into the second hole portions, and a second spring is further inserted into the second hole portions and urges the latch pin in a direction in which the latch pin is extended into the first hole portions.

10. A display screen assembly, comprising

A display screen box body;

the automatic release latch of any of claims 1 to 9, the first lock portion being mounted to the display screen enclosure at a location where the display screen assembly is mounted, or the second lock portion being mounted to the display screen enclosure at a location where the display screen assembly is mounted.

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