CN210349120U - Press ejector pin subassembly, LED box and LED display screen - Google Patents

Abstract

The utility model relates to a press ejector pin subassembly, LED box and LED display screen, wherein, press the ejector pin subassembly and include movable base plate, fixed baseplate, ejector pin and reset elastic component, one end of the ejector pin with the movable baseplate fixed connection, the other end passes through the fixed baseplate and exposes in the fixed baseplate; one of the movable substrate and the fixed bottom plate is provided with a connecting column, the other one is provided with a connecting hole with a certain depth, and when the movable substrate is pressed, the connecting column slides in the connecting hole; and two ends of the reset elastic piece are respectively connected with the movable base plate and the fixed bottom plate. The ejector rod can be enabled to move outwards by pressing the movable base plate, acting force is applied to the matched connector, the fixed connection between the connector and the positioning pin is separated, unlocking operation is achieved, and operation is simple.

Description

Press ejector pin subassembly, LED box and LED display screen

Technical Field

The utility model relates to a LED shows the field, especially relates to a press ejector pin subassembly, LED box and LED display screen.

Background

The LED has the characteristics of low energy consumption, high brightness, bright color, environmental protection and the like, and is widely applied to more and more scenes such as outdoor display, monitoring centers, advertisement/media display, stages and the like. The requirement for convenient maintenance of the LED display screen is becoming higher and higher. At present, the LED lamp plate generally adopts the mode of screw fixation or magnetic adsorption, fixes on the box frame. In actual maintenance, for the screw fixing mode, a plurality of screws need to be disassembled, the operation is time-consuming and labor-consuming, and the efficiency is low. As for the fixed mode of magnetic adsorption, need the maintenance tool of customization specialty, the cost is higher, and when dismantling, need hold the lamp plate with maintenance tool, the operation is more complicated. Moreover, in the fixed mode of magnetic adsorption, the lamp plate is very easy because vibrate, perhaps magnet is because of generating heat, high temperature inefficacy, and drops off from the box frame, and is not very firm, is unfavorable for the transportation, when the destination installation, needs to maintain again, fixed. Consequently, the fixed knot of current lamp plate constructs, dismantles the problem that maintenance operation is inconvenient, waste time and energy, inefficiency, awaits urgent need to improve.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a push rod assembly, an LED box and an LED display screen for solving the problems of inconvenient maintenance and operation and low efficiency of the fixing structure of the existing lamp panel.

An embodiment of the utility model provides a push rod assembly, which comprises a movable base plate, a fixed base plate, a push rod and a reset elastic part, wherein one end of the push rod is fixedly connected with the movable base plate, and the other end of the push rod passes through the fixed base plate and is exposed out of the fixed base plate; one of the movable substrate and the fixed bottom plate is provided with a connecting column, the other one is provided with a connecting hole with a certain depth, and when the movable substrate is pressed, the connecting column slides in the connecting hole; and two ends of the reset elastic piece are respectively connected with the movable base plate and the fixed bottom plate.

In some embodiments, the connecting columns are disposed on the fixed base plate, the connecting holes are disposed on the movable base plate, and the connecting holes are hollow columns or through holes or blind holes disposed on the movable base plate.

In some embodiments, the mobile substrate further comprises a base, the base is provided with a through hole, and the mobile substrate is accommodated in the through hole of the base and can slide in the through hole.

In some embodiments, the movable base plate further includes at least one side plate, at least one positioning groove is formed in the side plate, at least one ball plunger is arranged on the base corresponding to each side plate, and when the movable base plate moves to a preset position, the ball plunger is clamped in the positioning groove.

In some embodiments, a handpiece is further included, the handpiece being disposed on the movable substrate.

In some embodiments, the elastic restoring member is a spring, the elastic restoring member is sleeved on the connecting column, one end of the elastic restoring member is connected with the fixed bottom plate, and the other end of the elastic restoring member is connected with the movable base plate.

The utility model also provides a LED box, including LED module, box frame, connector, locating pin and pressing ejector pin subassembly, LED module fixed connection the connector, box frame fixed connection the locating pin and pressing ejector pin subassembly, LED module, box frame pass through connector, locating pin fixed connection;

the pressing ejector rod assembly is the pressing ejector rod assembly of any one of the preceding items;

the connector comprises an upper shell, a bottom shell, a shaft sleeve, an elastic piece and a ball, wherein the upper shell and the bottom shell are fixedly connected and form a cavity in the upper shell and the bottom shell, and the shaft sleeve and the ball are arranged in the cavity;

one end of the elastic piece is abutted against the bottom shell, and the other end of the elastic piece is abutted against the shaft sleeve;

a working cavity is arranged in the shaft sleeve, and an accommodating hole is formed in the side wall of the shaft sleeve and penetrates through the side wall of the shaft sleeve; the ball is accommodated in the accommodating hole, the ball is abutted against the inner wall of the upper shell, and at least part of the ball is exposed out of the accommodating hole and enters the working cavity of the shaft sleeve;

the upper shell is provided with a connecting through hole, and the working cavity is communicated with the outside through the cavity and the connecting through hole;

the positioning pin penetrates through the connecting through hole and is inserted into the working cavity, and the ball clamps the positioning pin;

the box body frame is further provided with an unlocking through hole, the unlocking through hole corresponds to the connector, and when the movable substrate of the push rod assembly is pressed, the push rod of the press push rod assembly penetrates through the unlocking through hole to extrude the connector.

In some embodiments, a switch through hole is further arranged on the bottom wall of the upper shell, and the switch through hole is communicated with the cavity;

when the movable substrate is pressed, the ejector rod penetrates through the unlocking through hole and the switch through hole to extrude the shaft sleeve.

In some embodiments, the positioning pin is stacked with the pressing ram assembly, and a projected area of the positioning pin is located in the pressing ram assembly.

The utility model discloses another embodiment still provides a LED display screen, including braced frame, a plurality of LED box, the LED box is installed braced frame is last, the LED box be aforementioned arbitrary the LED box.

The embodiment of the utility model provides a press ejector pin subassembly sets up the elastic component that resets between activity base plate and PMKD to ejector pin of fixed connection on the activity base plate, the ejector pin passes PMKD and outstanding PMKD. The ejector rod can be enabled to move outwards by pressing the movable base plate, acting force is applied to the matched connector, the fixed connection between the connector and the positioning pin is separated, unlocking operation is achieved, and operation is simple.

Drawings

Fig. 1 is a schematic diagram of a ball-based connector according to an embodiment of the present invention;

fig. 2 is a front view of a ball-based connector according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line AA' of FIG. 2;

FIG. 4 is a cross-sectional view taken along line BB' of FIG. 2;

fig. 5 is an exploded view of a ball-based connector according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an LED box according to an embodiment of the present invention;

FIG. 7 is an enlarged view of a portion of area C of FIG. 6;

fig. 8 is a schematic back structure view of an LED box according to another embodiment of the present invention;

fig. 9 is a schematic structural view of a pressing rod assembly according to an embodiment of the present invention;

FIG. 10 is a cross-sectional view taken along line DD' of FIG. 8;

FIG. 11 is a cross-sectional view taken along line EE' of FIG. 8;

FIG. 12 is an enlarged view of a portion of region F of FIG. 10;

FIG. 13 is an enlarged view of a portion of the area G of FIG. 11 in a connection locked condition;

fig. 14 is a partially enlarged view of a region G in fig. 11 in an unlocked state.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

As shown in fig. 1 to 5, an embodiment of the present invention provides a ball-based connector, including an upper shell 110, a bottom shell 120, a shaft sleeve 130, an elastic member 140, and balls 150, wherein the upper shell 110 and the bottom shell 120 are fixedly connected and form a cavity therein, the shaft sleeve 130 and the balls 150 are disposed in the cavity, and the shaft sleeve 130 is movable in the cavity;

one end of the elastic member 140 abuts against the bottom shell 120, and the other end abuts against the shaft sleeve 130;

a working cavity is arranged in the shaft sleeve 130, an accommodating hole 131a is formed in the side wall of the shaft sleeve 130, and the accommodating hole 131a penetrates through the side wall of the shaft sleeve 130; the ball 150 is accommodated in the accommodating hole 131a, the ball 150 abuts against the inner wall of the upper shell 110, at least a part of the ball 150 is exposed out of the accommodating hole 131a and enters the working cavity of the shaft sleeve 130;

the upper case 110 is provided with a connection through hole 111, and the working chamber is communicated with the outside through the cavity and the connection through hole.

The fixed connection between the upper case 110 and the bottom case 120 may be implemented by different connection structures such as a clamping connection, a snap connection, a screw connection, a pin connection, a riveting, a bolt connection, and the like. A cavity is formed between the upper case 110 and the lower case 120 to receive other components. Be provided with connect the through hole 111 on the diapire of epitheca 110, the inside working chamber that is provided with of axle sleeve, the working chamber can be through cavity, connect the through hole 111 and outside intercommunication. In actual use, the ball-based connector 100 may cooperate with the alignment pins to achieve alignment, connection, and locking of adjacent devices. A ball-based connector and a positioning pin may be respectively provided on the adjacent two devices, and the positioning pin may be inserted into the connection through hole 111 and extend into the working chamber of the bushing 130.

The elastic members 140 are disposed between the bottom case 120 and the shaft sleeve 130, and respectively abut against the bottom case 120 and the shaft sleeve 130. The elastic member 140 may abut on an inner wall of the bottom case 120, and an abutting member for abutting against the elastic member 140 may be provided on the boss 130. The elastic element 140 may be sleeved outside the shaft sleeve 130, or may be accommodated inside the shaft sleeve 130, and the abutting element of the shaft sleeve 130 is disposed at a corresponding position. As shown in fig. 3 and 5, an abutment member is provided in the working chamber of the sleeve 130, and the elastic member 140 abuts against the sleeve 130 in the working chamber.

In order to facilitate the insertion of the positioning pin and ensure the stability of the connection locking, the abutting member and the elastic member 140 are hollow. Specifically, the abutting part may be a ring-shaped lug, and the abutting part may be a continuous ring or lugs separated from each other. The contact member may be provided at an end of the receiving hole 131a away from the through-hole 111, or may be provided at an end of the receiving hole 131a away from the through-hole 111. The elastic member 140 may be embodied as a spring, or may be other devices or structures capable of providing elastic force. The locating pin, when it extends into the working chamber of the bushing 130, may extend partially into the hollow interior of the resilient member 140.

As shown in fig. 3-5, the shaft sleeve 130 has a working chamber therein, and a receiving hole 131a is formed in a side wall thereof for receiving the ball 150. The receiving hole 131a penetrates through the sidewall of the sleeve 130 to communicate with the working chamber. The receiving hole 131a can receive only a portion of the ball 150. In a certain region, the interval between the inner wall of the upper case 110 and the boss 130 is gradually reduced or smaller than that of other regions. By the extrusion of the elastic member 140, the shaft sleeve 130 gradually approaches the bottom wall of the upper shell 110, so that the balls 150 abut against the inner wall of the upper shell 110 and are subjected to an acting force exerted by the upper shell 110, and partially protrude out of the working cavity of the shaft sleeve 130, thereby exerting an acting force on the positioning pin extending into the working cavity, clamping the positioning pin in the working cavity of the shaft sleeve 130, and realizing the fixed connection between the positioning pin and the connector.

It will be appreciated that the spacing between the inner wall of the upper housing 110 and the boss 130 in certain regions may be tapered or smaller than in other regions, and may be achieved by various structures. For example, the upper shell 110 may be in a horn shape, and the sleeve 130 may be in a straight tube shape or a horn shape with a larger inclination. For example, the upper case 110 may have a straight cylindrical shape, but a partial region is provided with a protrusion, by which a distance between the inner wall of the upper case 110 and the bushing 130 is reduced.

To facilitate unlocking, the upper shell 110 is trumpet-shaped, and the inner wall thereof is an inclined surface. For example, the area of the bottom wall of the upper case 110 provided with the connecting through hole 111 may be smaller than the area of the end of the upper case 110 connected with the bottom case 120. Thus, when the lock is unlocked, the rod-shaped device presses the shaft sleeve 130 to move in the direction of opening into the bottom shell 120, the distance between the shaft sleeve 130 and the inner wall of the upper shell 110 gradually increases, that is, the balls 150 and the inner wall of the upper shell 110 gradually separate, the upper shell 110 no longer applies pressure to the balls 150, the balls 150 release the pressing to the positioning pin, and the positioning pin can be freely moved out.

In order to enhance the stability of the connection and to enhance the force of the balls on the dowel pins, a protrusion may be provided on the inner wall of the upper housing 110. The convex part can be a single bump or a bulge, and can also be an aggregate area of the bumps or the bulges. The convex portions may be provided in parallel straight lines with respect to the sleeve 130 or may be provided obliquely with respect to each other. Through setting up the convex part, can reduce the distance between upper shell 110 inner wall and the ball 150, increase and apply the dynamics of giving ball 150, strengthened ball 150 and applied the effort of locating pin, connect more stably.

The cross-sections of the receiving holes 131a on the sidewall of the shaft sleeve 130 may be substantially the same or different, for example, the receiving holes 131a may be in a shape of a trumpet with a larger end and a smaller end. Preferably, as shown in fig. 4, the receiving hole 131a is flared and has a smaller cross section near the working cavity. Therefore, a cavity convenient for accommodating the balls can be formed, the problem that the balls enter from one end of the accommodating hole 131a and slide out from the other end is avoided, and the connector is convenient to assemble.

To facilitate positioning during connection, positioning holes may be further formed on the bottom wall of the upper case 110. Correspondingly, a positioning column or a buckle is arranged on the adjacent device and matched with the positioning hole.

As shown in fig. 3 and 5, a switch through hole 112 is further formed on the bottom wall of the upper case 110, and the switch through hole 112 communicates with the cavity. After the connector is used for connection locking, unlocking is also required. The switch through hole 112 communicating with the cavity is provided, because the shaft sleeve 130 is also provided in the cavity, after the rod-shaped device is used to extend into the switch through hole 112, the rod-shaped device can abut against the shaft sleeve 130, and the shaft sleeve 130 can be moved in a direction close to the bottom shell 120 and far away from the top shell 110 by applying an acting force to the shaft sleeve 130 through the rod-shaped device. At this time, the inner wall of the upper shell 110 may gradually be separated from the contact with the ball 150, the ball 150 may no longer apply pressure to the positioning pin extending into the working chamber, and the positioning pin may be separated from the connector to achieve unlocking.

It is understood that, in order to unlock the connector, the switch through hole 112 may not be provided on the bottom wall of the upper case 110, but a force may be directly applied to the upper case 110. At this time, the upper shell 110 and the bottom shell 120 may be connected by a clamping and fixing manner, for example, as shown in fig. 3, the upper shell 110 is provided with a clamping leg, the bottom shell 120 is provided with a clamping edge, and the clamping leg of the upper shell 110 abuts against the clamping edge of the bottom shell 120 to prevent the two from separating. Meanwhile, the upper case 110 may slide toward the bottom case 120. When unlocking, pressure is applied to the upper shell 110, the upper shell 110 slides towards the bottom shell 120, the shaft sleeve 130 and the ball 150 are driven to move downwards together, the ball 150 and the positioning pin can be released from contact, and unlocking is achieved. Of course, if the front end of the positioning pin is provided with the reduced section, the unlocking process can be faster.

It will be appreciated that the sleeve 130 may be made of a ferromagnetic material in order to achieve unlocking. Thus, during unlocking, the magnetic adsorption device is utilized, the shaft sleeve 130 can be driven to slide close to the bottom shell 120, the extrusion effect of the ball 150 on the positioning pin is relieved, the positioning pin can move freely, and unlocking is achieved.

The connector based on ball that this embodiment provided sets up the axle sleeve in the cavity between epitheca and drain pan, and the drain pan supports through the elastic component and holds the axle sleeve, has placed the ball in the accepting groove of lining up the lateral wall on the axle sleeve, and the ball is outstanding in the working chamber in the axle sleeve, because the good pressure of exerting of elasticity, the inner wall butt ball of epitheca exerts pressure for the ball, and the ball can exert the effort for the locating pin that stretches into the working chamber of axle sleeve to realize the fixed connection between connector and the locating pin. Acting force is applied to the upper shell or the shaft sleeve, so that the ball and the positioning pin can be separated, and unlocking is realized. The operation of connection locking and unlocking is simple, and the connection is stable.

An embodiment of the present invention further provides an LED box 10, as shown in fig. 6 and 7, including an LED module 200, a box frame 300, a connector 100, and a positioning pin 301, where one of the LED module 200 and the box frame 300 is provided with the connector 100, and the other is provided with the positioning pin 301; the LED module 200 and the case frame 300 are fixedly connected by the connector 100 and the positioning pins 301.

The connector 100 is a ball-based connector 100 of any of the previous embodiments. The specific structure and operation of the connector 100 can be referred to the description of the previous embodiments, and are not repeated herein.

It is understood that one or more LED modules 200 may be disposed in the LED box 10, and the number of LED modules 200 is determined according to actual requirements. Each LED module 200 is connected and fixed using a plurality of connectors 100 and positioning pins 301. Generally, at least one connector 100 and alignment pins 301 are disposed at four corners of each LED module 200. It is understood that, for one LED module 200, only 2 sets of connectors 100 and positioning pins 301 may be provided, or more sets may be provided, depending on the actual situation. And is not particularly limited herein.

For the convenience of unlocking, one of the positioning pins 301 is disposed in the LED module 200 and the box frame 300, and an unlocking through hole 302 may also be disposed, where the unlocking through hole 302 corresponds to the connector 100. After the unlocking through hole 302 is provided, the upper shell or the sleeve of the connector 100 may be pressed using a rod-shaped device to complete the unlocking operation.

In the example shown in fig. 6 and 7, the connector 100 is provided on the LED module 200, and the positioning pin 301 and the unlocking through hole 302 are provided on the case frame 300. The connector 100 may be fixed to the LED module 200 by different connection structures such as a clamping connection, a snap connection, a screw connection, a pin connection, a rivet connection, and a bolt connection. The positioning pin 301 may be a separate component, fixed to the case frame 300 by the aforementioned connecting structure, or may be integrally formed with the case frame 300.

It is understood that the connector 100 may be disposed on the case frame 300, and the positioning pins 301 and the unlocking through-holes 302 are disposed on the LED module 200.

In order to facilitate the positioning of the connector 100 when being connected with the positioning pin 301 and increase the connection stability, the connector 100 may be provided with a positioning hole, and the case frame 300 or the LED module 200 provided with the positioning pin 301 may be provided with a positioning protrusion 303.

In this embodiment, through using connector and the locating pin based on the ball, connect LED module and box frame, in the connector, set up the axle sleeve in the cavity between epitheca and drain pan, the drain pan supports and holds the axle sleeve through the elastic component, the ball has been placed in the accepting groove who link up the lateral wall on the axle sleeve, the ball is outstanding in the working chamber in the axle sleeve, because the good pressure of applying of elasticity, the inner wall butt ball of epitheca exerts pressure for the ball, the effort can be exerted for the locating pin that stretches into the working chamber of axle sleeve to the ball, thereby realize the fixed connection between connector and the locating pin. Acting force is applied to the upper shell or the shaft sleeve, so that the ball and the positioning pin can be separated, and unlocking is realized. The operation of connection locking and unlocking is simple, and the connection is stable.

As shown in fig. 8-14, the LED box 10 may further include a pressing rod assembly 900, the pressing rod assembly 900 includes a movable substrate 910, a fixed bottom plate 920, a rod 930 and a restoring elastic member 940, one end of the rod 930 is fixedly connected to the movable substrate 910, and the other end of the rod 930 passes through the fixed bottom plate 920 and is exposed out of the fixed bottom plate 920; one of the movable substrate 910 and the fixed base plate 920 is provided with a connection column, and the other is provided with a connection hole with a certain depth, and the connection column can slide in the connection hole; the two ends of the elastic restoring member 940 are respectively connected to the movable base plate 910 and the fixed base plate 920.

In some embodiments, the connector 100 is disposed on the LED module 200, and the positioning pins 301 are disposed on the case frame 300. The pressing ram assembly 900 is also provided on the case frame 300. As shown in fig. 12 to 14, the fixed base plate 920 is fixed to the case frame 300. When unlocking, the push rod 930 may pass through the unlocking through hole 302 to press the upper shell or the sleeve of the connector 100, thereby completing the unlocking operation. The push rod 930 may be always in a state of passing through the unlocking through-hole 302, but not in contact with the connector 100. The number of the push rods 930 can be determined according to actual needs. In the examples shown in fig. 9, 13, and 14, 2 push rods 930 are provided.

As shown in fig. 12 to 14, the connection posts may be provided on the fixed base 920 and the connection holes are provided on the movable base 910. The connection hole may be a through hole or a blind hole formed in the movable substrate 910, or may be a hollow pillar protruding from the movable substrate 910.

The return elastic member 940 may be embodied as a spring. The elastic restoring member 940 may be sleeved on the connection post, and has one end connected to the fixed base plate 920 and the other end connected to the movable base plate 910, or connected to the hollow post of the movable base plate 910.

The elastic restoring element 940 may also be set inside the hollow column with one end connected to the bottom wall of the hollow column and the other end connected to the connecting column. In this case, the return elastic member 940 may be a spring, or may be another member or structure capable of increasing the elastic force.

It is understood that the connection posts may be disposed on the movable substrate 910, and the connection holes may be disposed on the fixed base 920. The structure can be adjusted correspondingly.

During unlocking, the pressing ejector rod assembly 900 is arranged on the LED box body 10, the movable base plate 910 is directly pressed, the ejector rod 930 is driven to penetrate through the unlocking through hole 302, the upper shell or the shaft sleeve of the connector 100 is extruded, and unlocking operation is completed.

As shown in fig. 3 and 5, and fig. 13 and 14, the bottom wall of the upper case 110 of the connector 100 is further provided with a switch through hole 112, and when unlocking, the push rod 930 passes through the unlocking through hole 302 of the case frame 300 and the switch through hole 112 of the connector 100 to abut against the boss 130. As shown in fig. 14, when the movable substrate 910 is pressed, the push rod 930 presses the shaft sleeve 130 directly, so as to drive the shaft sleeve 130 to move toward the bottom shell 120 and away from the top shell 110, so that the inner wall of the top shell 110 is separated from the balls 150, and the balls 150 no longer apply force to the positioning pins 301, so that the connector 100 can be separated from the positioning pins 301, thereby achieving the unlocking operation.

It is understood that when the movable substrate 910 is not pressed, as shown in fig. 13, the push rod 930 may be always inserted through the unlocking through-hole 302 and the opening/closing through-hole 112 as long as an excessive force is not applied to the sleeve 130 of the connector 100.

In order to reduce the space occupied by the pressing ram assembly 900 and the positioning pin 301, the pressing ram assembly 900 may be stacked on the positioning pin 301. As shown in fig. 11-14, the positioning pin 301 is projected in the central region of the press ram assembly 900. The push rods 930 are disposed on both sides of the positioning pin 301.

The positioning pins 301 may be directly disposed on the fixing base 920. The fixed base plate 920 may be a separate component and fixedly disposed on the case frame 300; or may be integrally formed with the case frame 300.

As shown in fig. 9, the pressing plunger assembly 900 may further include a base 950, the base 950 is provided with a through hole, and the movable substrate 910 is received in the through hole of the base 950 and can slide in the through hole. The base 950 may be fixed to the case frame 300. Meanwhile, the base 950 may also be fixedly connected to the fixing base 920. By providing the base 950 with a through hole and disposing the movable substrate 910 in the through hole, the displacement track of the movable substrate 910 can be more stable, and the top bar 930 is prevented from being damaged.

As shown in fig. 9, 13 and 14, the movable substrate 910 may further include at least one side plate 911 to increase a contact area between the movable substrate 910 and the through hole of the base 950, and further improve the stability of the displacement track of the movable substrate 910. The number of side panels 911 may be determined according to actual needs. In fig. 9, 2 side plates 911 are provided.

Further, at least one positioning groove 911a is formed in the side plate 911, at least one ball plunger 960 is disposed on the base 950 corresponding to each side plate 911, and when the movable base plate 910 moves to a preset position, the ball plunger 960 is clamped in the positioning groove 911a to achieve positioning and stabilize the position of the movable base plate 910.

Only one ball plunger 960 may be provided for each side plate 911; a plurality of ball plungers 960 may also be provided to improve the stability of positioning the movable base plate 910; the same number of ball plungers 960 may also be provided corresponding to the number of the positioning grooves 911 a.

As shown in fig. 9, the push rod assembly 900 may further include a hand piece 901, where the hand piece 901 is disposed on the movable substrate 910 to facilitate operations on the movable substrate 910, such as pushing, pulling up, and the like. The hand piece 901 may be a pull ring, a cross bar, or other structures that facilitate operation.

The utility model also provides an LED display screen, which comprises a supporting frame and a plurality of LED boxes, wherein the LED boxes are the LED boxes in the previous embodiment; the LED box body is arranged on the supporting frame.

The LED box in the LED display screen that this embodiment provided, through using connector and the locating pin based on the ball, connect LED module and box frame, in the connector, set up the axle sleeve in the cavity between epitheca and drain pan, the drain pan supports through the elastic component and holds the axle sleeve, link up the ball in the accepting groove of lateral wall on the axle sleeve, the ball is outstanding in the working chamber in the axle sleeve, because the good pressure of applying of elasticity, the inner wall butt ball of epitheca and for the ball exert pressure, the ball can exert the effort for the locating pin that stretches into the working chamber of axle sleeve, thereby realize the fixed connection between connector and the locating pin. Acting force is applied to the upper shell or the shaft sleeve, so that the ball and the positioning pin can be separated, and unlocking is realized. The operation of connection locking and unlocking is simple, and the connection is stable.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A pressing ejector rod assembly is characterized by comprising a movable base plate, a fixed base plate, an ejector rod and a reset elastic piece, wherein one end of the ejector rod is fixedly connected with the movable base plate, and the other end of the ejector rod penetrates through the fixed base plate and is exposed out of the fixed base plate; one of the movable substrate and the fixed bottom plate is provided with a connecting column, the other one is provided with a connecting hole with a certain depth, and when the movable substrate is pressed, the connecting column slides in the connecting hole; and two ends of the reset elastic piece are respectively connected with the movable base plate and the fixed bottom plate.

2. The pressing push rod assembly as claimed in claim 1, wherein the connecting posts are disposed on the fixed base plate, the connecting holes are disposed on the movable base plate, and the connecting holes are hollow posts or through holes or blind holes disposed on the movable base plate.

3. The push rod assembly as claimed in claim 1, further comprising a base, wherein the base is provided with a through hole, and the movable substrate is accommodated in the through hole of the base and can slide in the through hole.

4. The pressing ram assembly of claim 3, wherein the movable base plate further comprises at least one side plate, the side plate is provided with at least one positioning groove, the base is provided with at least one ball plunger corresponding to each side plate, and the ball plunger is clamped in the positioning groove when the movable base plate moves to a preset position.

5. A press ram assembly as in any of claims 1-4 further comprising a hand piece disposed on the movable base plate.

6. A press ram assembly as in any of claims 1-4 wherein the return spring is a spring, the return spring is sleeved on the connecting post, one end of the return spring is connected to the fixed base plate, and the other end of the return spring is connected to the movable base plate.

7. The LED box body is characterized by comprising an LED module, a box body frame, a connector, a positioning pin and a pressing ejector rod assembly, wherein the LED module is fixedly connected with the connector, the box body frame is fixedly connected with the positioning pin and the pressing ejector rod assembly, and the LED module and the box body frame are fixedly connected through the connector and the positioning pin;

the press ram assembly is the press ram assembly of any one of claims 1-6;

the connector comprises an upper shell, a bottom shell, a shaft sleeve, an elastic piece and a ball, wherein the upper shell and the bottom shell are fixedly connected and form a cavity in the upper shell and the bottom shell, and the shaft sleeve and the ball are arranged in the cavity;

one end of the elastic piece is abutted against the bottom shell, and the other end of the elastic piece is abutted against the shaft sleeve;

a working cavity is arranged in the shaft sleeve, and an accommodating hole is formed in the side wall of the shaft sleeve and penetrates through the side wall of the shaft sleeve; the ball is accommodated in the accommodating hole, the ball is abutted against the inner wall of the upper shell, and at least part of the ball is exposed out of the accommodating hole and enters the working cavity of the shaft sleeve;

the upper shell is provided with a connecting through hole, and the working cavity is communicated with the outside through the cavity and the connecting through hole;

the positioning pin penetrates through the connecting through hole and is inserted into the working cavity, and the ball clamps the positioning pin;

the box body frame is further provided with an unlocking through hole, the unlocking through hole corresponds to the connector, and when the movable substrate of the push rod assembly is pressed, the push rod of the push rod assembly penetrates through the unlocking through hole to extrude the connector.

8. The LED box body as claimed in claim 7, wherein the upper shell is further provided with a switch through hole, and the switch through hole is communicated with the cavity;

when the movable substrate is pressed, the ejector rod penetrates through the unlocking through hole and the switch through hole to extrude the shaft sleeve.

9. The LED cabinet of claim 7, wherein the locating pin is stacked with a push ram assembly, and a projected area of the locating pin is located within the push ram assembly.

10. An LED display screen, comprising a supporting frame and a plurality of LED boxes, wherein the LED boxes are mounted on the supporting frame, and the LED display screen is characterized in that the LED boxes are the LED boxes according to any one of claims 7 to 9.

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