A stretched part shielding cover for communication device

Abstract

The present invention relates to the technical field of shielding covers, and discloses a stretching shielding cover for communication devices, including a shielding cover, wherein a heat dissipation slot is provided on the shielding cover, and the number of the heat dissipation slots is multiple and evenly distributed on the shielding cover in a straight line; a shielding component is arranged on the shielding cover, and includes a baffle, wherein the baffle is arranged in the heat dissipation slot, a support shaft is fixed in the baffle, and the support shaft is rotatably connected to the inner wall of the heat dissipation slot through a bearing, a rotating rod is fixed on the outer side of the support shaft, a sliding shaft is fixed on one side of the rotating rod, a slide rail is arranged on one side of the rotating rod, and the sliding shaft is movably connected to the slide rail. The beneficial effects of the present invention are as follows: the heat dissipation effect of the shielding cover can be improved by providing multiple heat dissipation slots, and the heat dissipation slots are shielded by the shielding component, so that only one heat dissipation slot can be opened for heat dissipation at a time, thereby avoiding that too many heat dissipation slots will reduce the shielding effect of the shielding cover.

Description

Technical Field

[0001] The invention relates to the technical field of shielding covers, in particular to a shielding cover of a stretching member used in a communication device. Background Art

[0002] Stretched shielding covers are usually made of metal materials, such as stainless steel, copper, etc. Its main function is to electromagnetically shield specific electronic components or circuits in communication devices. In communication devices, there are various electronic components and circuits, which may generate electromagnetic radiation when working, and may also be affected by external electromagnetic interference. The shielding cover can effectively block external electromagnetic interference from entering the protected area, and also prevent internal electromagnetic radiation from leaking out, thereby improving the electromagnetic compatibility and stability of the communication device. When the shielding cover covers the circuit elements, it will hinder the natural flow of air and affect heat dissipation, especially in some high-power communication devices, the heat dissipation problem may be more prominent, and if too many heat dissipation holes are set on the shielding cover, the shielding effect of the shielding cover will be reduced, and the heat dissipation holes will become a channel for electromagnetic wave leakage. The original function of the shielding cover is to block the external electromagnetic field from entering the interior or prevent the internal electromagnetic field from radiating outward through the metal shell, but too many heat dissipation holes will destroy the sealing of the shielding cover, so that the electromagnetic field can leak in and out through these holes, thereby reducing the shielding effectiveness. Summary of the invention

[0003] The present invention is proposed in view of the above-mentioned problems existing in the conventional drawn-piece shielding cover for communication devices.

[0004] Therefore, the problem to be solved by the present invention is that after the shielding cover is installed, the heat dissipation effect of the communication device is poor.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a tensile member shielding cover for a communication device, comprising a shielding cover, the shielding cover is provided with a heat dissipation slot, the heat dissipation slots are multiple and are evenly distributed on the shielding cover in a straight line;

[0006] A shielding assembly is arranged on the shielding cover, comprising a baffle, the baffle is arranged in the heat dissipation slot, a support shaft is fixed in the baffle, the support shaft is rotatably connected to the inner wall of the heat dissipation slot through a bearing, a rotating rod is fixed on the outer side of the support shaft, a sliding shaft is fixed on one side of the rotating rod, a slide rail is arranged on one side of the rotating rod, the sliding shaft is movably connected to the inside of the slide rail, and a connecting rod is fixed on the top of the slide rail;

[0007] A pushing component is arranged on the shielding cover, including a pushing member and a fixed frame, wherein the fixed frame is fixed to one side of the connecting rod, a force-bearing rod is inserted into the fixed frame, a movable block is arranged on the top of the shielding cover, an extrusion rod is arranged on one side of the movable block, the extrusion rod cooperates with the force-bearing rod, a guide rod is fixed on the top of the shielding cover, the force-bearing rod is movably connected to the top of the guide rod, and the end of the guide rod is inclined.

[0008] As a preferred solution of the stretching member shielding cover for the communication device described in the present invention, the pushing component also includes a driving member, including a rotating sleeve, the rotating sleeve is rotatably connected to the movable block through a bearing, a fixed shaft is fixed in the rotating sleeve, a reciprocating roller is inserted into the top of the rotating sleeve, the fixed shaft is meshed with the reciprocating roller, a motor is fixed on the top of the shielding cover, and the motor output shaft is fixed to the reciprocating roller.

[0009] As a preferred solution of the stretching member shielding cover for the communication device described in the present invention, the pushing assembly also includes a locking member, including a plug plate, the plug plate is plugged into the movable block, a slot is provided on the rotating sleeve, the plug plate is engaged with the slot, a positioning block is fixed on the top of the plug plate, a positioning column is fixed on one side of the movable block, the positioning column is movably connected to the positioning block, a first spring is provided on the outer side of the positioning column, and the two ends of the first spring are respectively fixed to the positioning block and the movable block.

[0010] As a preferred solution of the stretching member shielding cover for the communication device described in the present invention, the pushing component also includes an extrusion member, including a force-bearing block, the force-bearing block is fixed to the bottom of the plug board, an extrusion block is arranged on the top of the shielding cover, a positioning shaft is rotatably connected inside the extrusion block, and the positioning shaft is fixed to the top of the shielding cover.

[0011] As a preferred solution of the stretching member shielding cover for the communication device described in the present invention, the pushing assembly also includes a delay member, including a connecting sleeve, the connecting sleeve is fixed to one side of the positioning block, a piston plate is fixed to one side of the connecting sleeve, a fixing sleeve is fixed to the end of the positioning column, the piston plate is movably connected to the fixing sleeve, an air vent is provided on one side of the fixing sleeve, a block is hinged to one side of the fixing sleeve through a hinge plate, and an exhaust hole is provided on the block.

[0012] The beneficial effects of the present invention are as follows: by setting up a plurality of heat dissipation slots, the heat dissipation effect of the shielding cover can be improved, and by shielding the heat dissipation slots with a shielding component, only one heat dissipation slot can be opened for heat dissipation at a time, thereby avoiding too many heat dissipation slots reducing the shielding effect of the shielding cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0014] Figure 1 An overall view of a stretched shield for a communication device.

[0015] Figure 2 A partial top view of the shielding cover of a tensile shielding cover for a communication device.

[0016] Figure 3 Stretched shielding case for communication devices Figure 2 A partial enlarged structural diagram in the middle.

[0017] Figure 4 Stretched shielding case for communication devices Figure 2 A partial enlarged structural diagram of point B in the middle.

[0018] Figure 5 A structural diagram of a shielding component of a stretched shielding cover for a communication device.

[0019] Figure 6 A bottom-up structural diagram of a force-bearing block and a movable frame of a tensile shielding cover for a communication device.

[0020] Figure 7 A cross-sectional view of the active block structure of a tensile shielding cover for a communication device.

[0021] Figure 8 Stretched shielding case for communication devices Figure 7 A partial enlarged structural diagram of point C in the middle. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Example 1

[0026] Reference Figure 1-Figure 8 , which is the first embodiment of the present invention, provides a stretching member shielding cover for a communication device, the stretching member shielding cover for the communication device includes a shielding cover 101, a heat dissipation slot 101-1 is opened on the shielding cover 101, and there are multiple heat dissipation slots 101-1, which are evenly distributed on the shielding cover 101 in a straight line.

[0027] The shielding cover 101 is manufactured through a stretching process, so that the shielding cover 101 has a specific shape and size to adapt to the design requirements of the communication device. It usually has good mechanical strength and shielding performance, and can reliably protect the internal electronic components. Through the setting of multiple heat dissipation slots 101-1, the heat generated between the shielding cover 101 and the communication device can be discharged to the outside, thereby avoiding heat accumulation that may cause the temperature of the electronic components of the communication device to rise, thereby affecting the performance and reliability of the communication device.

[0028] The shielding assembly 200 is arranged on the shielding cover 101, and includes a baffle 201. The baffle 201 is arranged in the heat dissipation groove 101-1. A support shaft 202 is fixed in the baffle 201. The support shaft 202 is rotatably connected to the inner wall of the heat dissipation groove 101-1 through a bearing. A rotating rod 203 is fixed on the outer side of the support shaft 202. A sliding shaft 204 is fixed on one side of the rotating rod 203. A slide rail 205 is arranged on one side of the rotating rod 203. The sliding shaft 204 is movably connected to the slide rail 205, and a connecting rod 206 is fixed on the top of the slide rail 205.

[0029] There are multiple groups of shielding components 200, corresponding to the multiple heat dissipation slots 101-1. There are three baffles 201 in each heat dissipation slot 101-1. By setting up multiple baffles 201, the space occupied by the baffles 201 when opened can be reduced, avoiding the baffles 201 from being squeezed with the communication device when opened. The material of the baffles 201 is the same as that of the shielding cover 101.

[0030] The heat dissipation slot 101 - 1 is shielded by the baffle 201 to prevent the heat dissipation slot 101 - 1 from becoming a channel for electromagnetic wave leakage, thereby reducing the shielding effect of the shielding cover 101 .

[0031] The support shaft 202 is used to support and position the baffle 201, and drive the baffle 201 to rotate. When the connecting rod 206 moves, it will drive the slide rail 205 to move. At this time, the slide rail 205 drives the rotating rod 203 to rotate through the cooperation of the sliding shaft 204, and drives the support shaft 202 and the baffle 201 to rotate through the rotating rod 203. At this time, the baffle 201 can be opened, and the heat accumulated between the shielding cover 101 and the communication device can be discharged to the outside.

[0032] The pushing assembly 300 is arranged on the shielding cover 101, and includes a pushing member 301, including a fixed frame 301a, the fixed frame 301a is fixed to one side of the connecting rod 206, a force rod 301b is inserted into the fixed frame 301a, a movable block 301c is arranged on the top of the shielding cover 101, an extrusion rod 301d is arranged on one side of the movable block 301c, the extrusion rod 301d cooperates with the force rod 301b, a guide rod 301e is fixed on the top of the shielding cover 101, the force rod 301b is movably connected to the top of the guide rod 301e, and the end of the guide rod 301e is inclined.

[0033] A groove (not shown in the figure) is provided at the bottom of the force-bearing rod 301b, and the groove is clamped on the outer side of the guide rod 301e. When the force-bearing rod 301b moves, it will move along the track of the guide rod 301e.

[0034] When the movable block 301c is moving and drives the squeezing rod 301d to contact the force-bearing rod 301b, the squeezing rod 301d will push the force-bearing rod 301b and the fixed frame 301a to move, and drive the connecting rod 206 to move through the fixed frame 301a, so that the baffle 201 can be opened. When the force-bearing rod 301b moves to the bent position of the guide rod 301e, it will move into the fixed frame 301a along the inclined direction of the guide rod 301e, so that it can be separated from the squeezing rod 301d, and then the movement of the movable block 301c can be unimpeded, and it can move to the position of the next heat dissipation slot 101-1, open the next group of baffles 201, and the baffles 201 of the previous group will be closed, so that only one of the upper heat dissipation slots 101-1 of the shielding cover 101 is always opened, and the opening position continues to change, thereby improving the heat dissipation effect of the shielding cover 101 without affecting the shielding effect.

[0035] Example 2

[0036] Reference Figure 1-Figure 8 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0037] Specifically, the pushing component 300 also includes a driving member 302, including a rotating sleeve 302a, which is rotatably connected to the movable block 301c through a bearing, a fixed shaft 302b is fixed in the rotating sleeve 302a, a reciprocating roller 302c is inserted into the top of the rotating sleeve 302a, the fixed shaft 302b is meshed with the reciprocating roller 302c, a motor 302d is fixed on the top of the shielding cover 101, and the output shaft of the motor 302d is fixed to the reciprocating roller 302c.

[0038] A stabilizing block is fixed on the top of the shielding cover 101, and the end of the reciprocating roller 302c is rotatably connected to the stabilizing block through a bearing. The starting motor 302d drives the reciprocating roller 302c to rotate. When the reciprocating roller 302c rotates, it drives the rotating sleeve 302a to move through the cooperation of the fixed shaft 302b, so that the rotating sleeve 302a can drive the movable block 301c to move.

[0039] Specifically, the pushing assembly 300 also includes a locking member 303, including an insert plate 303a, the insert plate 303a is inserted into the movable block 301c, a slot 302a-1 is opened on the rotating sleeve 302a, the insert plate 303a is engaged with the slot 302a-1, a positioning block 303b is fixed to the top of the insert plate 303a, a positioning column 303c is fixed to one side of the movable block 301c, the positioning column 303c is movably connected to the positioning block 303b, a first spring 303d is sleeved on the outer side of the positioning column 303c, and the two ends of the first spring 303d are respectively fixed to the positioning block 303b and the movable block 301c.

[0040] When the plug plate 303a is engaged with the slot 302a-1, the rotating sleeve 302a cannot rotate in the movable block 301c. At this time, when the reciprocating roller 302c rotates, it can drive the rotating sleeve 302a and the movable block 301c to move through the cooperation of the fixed shaft 302b, so that the movable block 301c can drive the extrusion rod 301d to push the force-bearing rod 301b to move.

[0041] When the plug plate 303a is separated from the slot 302a-1, the reciprocating roller 302c will rotate, which will drive the fixed shaft 302b and the rotating sleeve 302a to rotate, while the movable block 301c and the squeezing rod 301d will stop moving, so that the squeezing rod 301d can continue to squeeze the force-bearing rod 301b, so that the fixed frame 301a and the connecting rod 206 stop at the position after being pushed and displaced, and the baffle 201 can be in a continuously open state, so that the heat in the shielding cover 101 can have sufficient time to dissipate outward.

[0042] The positioning column 303c cooperates with the positioning block 303b to support and position the plug plate 303a. The first spring 303d is set to apply a pulling force to the positioning block 303b, and the positioning block 303b drives the plug plate 303a to move, so that the plug plate 303a can be engaged with the slot 302a-1 again, so that the reciprocating roller 302c can continue to drive the rotating sleeve 302a and the movable block 301c to move when rotating.

[0043] Specifically, the pushing assembly 300 also includes an extrusion member 304, including a force block 304a, which is fixed to the bottom of the plug board 303a, and an extrusion block 304b is arranged on the top of the shielding cover 101. A positioning shaft 304c is rotatably connected inside the extrusion block 304b, and the positioning shaft 304c is fixed to the top of the shielding cover 101.

[0044] The extrusion block 304b is located at a position close to the inclined guide rod 301e, and one side of the force block 304a is inclined. When the extrusion rod 301d pushes the force rod 301b to move, and the force rod 301b is about to move to the bent position of the guide rod 301e, the inclined surface of the force block 304a will contact the extrusion block 304b, and the plug plate 303a will be moved by the extrusion block 304b, so that the plug plate 303a can be separated from the slot 302a-1.

[0045] Specifically, the pushing assembly 300 also includes a delay member 305, including a connecting sleeve 305a, the connecting sleeve 305a is fixed to one side of the positioning block 303b, a piston plate 305b is fixed to one side of the connecting sleeve 305a, a fixing sleeve 305c is fixed to the end of the positioning column 303c, the piston plate 305b is movably connected to the fixing sleeve 305c, a ventilation hole 305c-1 is provided on one side of the fixing sleeve 305c, a stopper 305d is hinged to one side of the fixing sleeve 305c through a hinge plate, and an exhaust hole 305d-1 is provided on the stopper 305d.

[0046] The aperture of the air vent 305c-1 is larger, and the aperture of the exhaust hole 305d-1 is smaller. When the positioning block 303b moves, it will drive the piston plate 305b to move in the fixed sleeve 305c through the connecting sleeve 305a. At this time, the airflow generated when the piston plate 305b moves will open the block 305d, so as not to hinder the normal movement of the piston plate 305b. When the positioning block 303b is moved by the pulling force of the first spring 303d, the block 305d will be closed downward. When the piston plate 305b moves, air only enters inward through the exhaust hole 305d-1, so that the piston plate 305b can move more slowly, thereby delaying the time for the plug plate 303a to engage with the slot 302a-1, so that the baffle 201 can be opened for a sufficient time and the heat in the current area can be completely discharged.

[0047] Specifically, a first torsion spring 304d is sleeved outside the positioning shaft 304c, and both ends of the first torsion spring 304d are respectively fixed to the positioning shaft 304c and the extrusion block 304b. A limiting block 304e is fixed on the top of the shielding cover 101, and one side of the limiting block 304e contacts the extrusion block 304b.

[0048] The positioning shaft 304c is used to support and position the extrusion block 304b. The rotation direction of the extrusion block 304b is limited by the limit block 304e so that it can only rotate in one direction. In this way, when the side of the straight surface of the force block 304a contacts the extrusion block 304b, it can push the extrusion block 304b to rotate without being hindered, and the extrusion block 304b is reset by the first torsion spring 304d.

[0049] Example 3

[0050] Reference Figure 1-Figure 8 , which is the third embodiment of the present invention, and is based on the first two embodiments.

[0051] Specifically, a support block 301f is fixed on one side of the movable block 301c, a support column 301g is fixed inside the extrusion rod 301d, the support column 301g is rotatably connected to the support block 301f through a bearing, a second torsion spring 301h is fixed on the top of the support block 301f, the top of the second torsion spring 301h is fixed to the support column 301g, a limiting plate 301i is fixed on one side of the movable block 301c, and one side of the limiting plate 301i is in contact with the extrusion rod 301d.

[0052] The extrusion rod 301d is hinged to the movable block 301c through the cooperation of the support block 301f and the support column 301g. The limiting plate 301i is used to limit the extrusion rod 301d so that it can only rotate in one direction. The second torsion spring 301h is used to reset the extrusion rod 301d after rotation.

[0053] Specifically, a support plate 207 is fixed on the top of the shielding cover 101, a support rod 208 is fixed on one side of the support plate 207, the support rod 208 is movably connected to the fixed frame 301a, a second spring 209 is sleeved on the outside of the support rod 208, and both ends of the second spring 209 are respectively fixed to the support plate 207 and the fixed frame 301a.

[0054] The support rod 208 is used to support and position the fixed frame 301a. The second spring 209 applies a thrust to the fixed frame 301a. When the extrusion rod 301d is separated from the force-bearing rod 301b, the fixed frame 301a can drive the connecting rod 206 to reset and the baffle 201 can be closed.

[0055] Specifically, a friction block 102 is fixed on the top of the shielding cover 101, and the friction block 102 corresponds to the bending position of the guide rod 301e.

[0056] When the plug board 303a is separated from the slot 302a-1, the movable block 301c will be located on the top of the friction block 102, and the friction block 102 will restrict the movable block 301c, so that the friction between the movable block 301c and the top of the shielding cover 101 is increased, preventing the second spring 209 from pushing the fixed frame 301a to move.

[0057] Specifically, there are multiple slots 302a-1, which are evenly distributed on the rotating sleeve 302a in a ring shape.

[0058] By disposing a plurality of slots 302a - 1 , the rotating sleeve 302a can be rotated to any angle, and the inserting plate 303a can be engaged with the slots 302a - 1 .

[0059] When in use, the motor 302d is started to drive the reciprocating roller 302c to rotate. When the reciprocating roller 302c rotates, the rotating sleeve 302a is driven to move through the cooperation of the fixed shaft 302b, so that the rotating sleeve 302a can drive the movable block 301c to move. When the movable block 301c is moving and drives the extrusion rod 301d to contact the force-bearing rod 301b, the extrusion rod 301d will push the force-bearing rod 301b and the fixed frame 301a to move, and drive the connecting rod 206 to move through the fixed frame 301a. When the connecting rod 206 moves, it will drive the slide rail 205 to move. At this time, the slide rail 205 drives the rotating rod 203 to rotate through the cooperation of the sliding shaft 204, and drives the support shaft 202 and the baffle 201 to rotate through the rotating rod 203. At this time, the baffle 201 can be opened, and the heat accumulated between the shielding cover 101 and the communication device can be discharged to the outside.

[0060] At the same time, the inclined surface of the force-bearing block 304a will contact the extrusion block 304b, and the extrusion block 304b will drive the plug plate 303a to move, so that the plug plate 303a can be separated from the slot 302a-1. At this time, when the reciprocating roller 302c rotates, it will drive the fixed shaft 302b and the rotating sleeve 302a to rotate, and the movable block 301c and the extrusion rod 301d will stop moving, so that the extrusion rod 301d can continue to squeeze the force-bearing rod 301b, so that the fixed frame 301a and the connecting rod 206 stop at the position after being pushed and displaced, and the baffle 201 can be in a continuously open state, so that the heat in the shielding cover 101 can have sufficient time to dissipate outward.

[0061] At the same time, the positioning block 303b will move due to the pulling force of the first spring 303d, and the stopper 305d will close downward. When the piston plate 305b moves, air will only enter through the exhaust hole 305d-1, so that the piston plate 305b can move more slowly, thereby delaying the time for the plug plate 303a to engage with the slot 302a-1, so that the baffle 201 can be opened for a sufficient time and the heat in the current area can be completely discharged.

[0062] When the plug plate 303a is engaged with the slot 302a-1 again, the reciprocating roller 302c will continue to drive the rotating sleeve 302a and the movable block 301c to move when it rotates. When the force-bearing rod 301b moves to the position where the guide rod 301e is bent, it will move into the fixed frame 301a along the inclination direction of the guide rod 301e, so that it can be separated from the extrusion rod 301d, and then the movement of the movable block 301c can be unimpeded, and it can move to the position of the next heat dissipation slot 101-1, open the next group of baffles 201, and close the baffles 201 of the previous group, so that only one of the upper heat dissipation slots 101-1 of the shielding cover 101 is always opened, and the opening position continues to change, thereby improving the heat dissipation effect of the shielding cover 101 without affecting the shielding effect.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A stretched shield for a communication device, characterized in that: include, A shielding cover (101), wherein the shielding cover (101) is provided with heat dissipation grooves (101-1), and the heat dissipation grooves (101-1) are multiple in number and are evenly distributed in a straight line on the shielding cover (101); A shielding assembly (200) is arranged on the shielding cover (101), comprising a baffle (201), the baffle (201) being arranged in the heat dissipation slot (101-1), a support shaft (202) being fixed in the baffle (201), and the support shaft (202) being rotatably connected to the inner wall of the heat dissipation slot (101-1) via a bearing; A rotating rod (203) is fixed on the outside of the support shaft (202), a sliding shaft (204) is fixed on one side of the rotating rod (203), a sliding rail (205) is provided on one side of the rotating rod (203), the sliding shaft (204) is movably connected to the inside of the sliding rail (205), and a connecting rod (206) is fixed on the top of the sliding rail (205); A pushing component (300) is arranged on the shielding cover (101), comprising a pushing member (301), comprising a fixing frame (301a), wherein the fixing frame (301a) is fixed to one side of the connecting rod (206), a force-bearing rod (301b) is inserted into the fixing frame (301a), and a movable block (301c) is arranged on the top of the shielding cover (101); An extrusion rod (301d) is provided on one side of the movable block (301c), the extrusion rod (301d) cooperates with the force-bearing rod (301b), a guide rod (301e) is fixed on the top of the shielding cover (101), the force-bearing rod (301b) is movably connected to the top of the guide rod (301e), and the end of the guide rod (301e) is inclined; When the movable block (301c) moves and drives the extrusion rod (301d) to contact the force-bearing rod (301b), the extrusion rod (301d) pushes the force-bearing rod (301b) and the fixed frame (301a) to move, and drives the connecting rod (206) to move through the fixed frame (301a), thereby opening the baffle (201); when the force-bearing rod (301b) moves to the position where the guide rod (301e) is bent, it moves inward toward the fixed frame (301a) along the inclination direction of the guide rod (301e). The movable block (301c) is movable so as to be separated from the squeezing rod (301d), thereby enabling the movable block (301c) to move unhindered and move to the position of the next heat dissipation slot (101-1), opening the next set of baffles (201), and closing the previous set of baffles (201), thereby ensuring that only one of the upper heat dissipation slots (101-1) of the shielding cover (101) is always open, and the open position continuously changes, thereby improving the heat dissipation effect of the shielding cover (101) without affecting the shielding effect.

2. The stretched shield for communication device according to claim 1, characterized in that: The pushing assembly (300) further comprises a driving member (302), comprising a rotating sleeve (302a), the rotating sleeve (302a) being rotatably connected to the movable block (301c) via a bearing, a fixed shaft (302b) being fixed in the rotating sleeve (302a), a reciprocating roller (302c) being inserted into the top of the rotating sleeve (302a), the fixed shaft (302b) being meshed with the reciprocating roller (302c), a motor (302d) being fixed on the top of the shielding cover (101), and an output shaft of the motor (302d) being fixed to the reciprocating roller (302c).

3. The stretched shield for communication device according to claim 2, characterized in that: The pushing assembly (300) further comprises a locking member (303), comprising an insert plate (303a), the insert plate (303a) being inserted into the movable block (301c), the rotating sleeve (302a) being provided with a slot (302a-1), the insert plate (303a) being engaged with the slot (302a-1), and a positioning block (303b) being fixed on the top of the insert plate (303a).

4. The stretched shield for a communication device as claimed in claim 3, characterized in that: A positioning column (303c) is fixed on one side of the movable block (301c), the positioning column (303c) is movably connected to the inside of the positioning block (303b), a first spring (303d) is sleeved on the outside of the positioning column (303c), and two ends of the first spring (303d) are respectively fixed to the positioning block (303b) and the movable block (301c).

5. The stretched part shielding cover for communication device according to claim 4, characterized in that: The pushing assembly (300) further comprises an extrusion member (304), comprising a force-bearing block (304a), wherein the force-bearing block (304a) is fixed to the bottom of the plug plate (303a), and an extrusion block (304b) is arranged on the top of the shielding cover (101), wherein a positioning shaft (304c) is rotatably connected inside the extrusion block (304b), and the positioning shaft (304c) is fixed to the top of the shielding cover (101).

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