A stable coverage UHF RFID planar near-field antenna

Abstract

This invention discloses a stable-coverage UHF RFID planar near-field antenna, comprising a base, a housing, a cover, a dustproof mesh, a disassembly mechanism, and a heat dissipation mechanism. The housing is fixedly connected to the upper end of the base, and the housing has an interface. The upper end of the housing contacts the cover. A heat dissipation groove is formed inside the housing, and a dustproof mesh is fixedly connected inside the heat dissipation groove. The disassembly mechanism and the heat dissipation mechanism are jointly provided on the base and the housing. This invention relates to a stable-coverage UHF RFID planar near-field antenna, which features quick removal of the cover for easy maintenance by operators and effective heat dissipation for the electrical components inside the housing.

Description

Technical Field

[0001] This invention belongs to the field of antenna technology, specifically a stable coverage UHF RFID planar near-field antenna. Background Technology

[0002] Patent CN113437509A discloses a stable coverage UHF RFID planar near-field antenna, comprising a metal ground plane, a dielectric substrate, and a radiating layer stacked sequentially. The radiating layer consists of a power divider network and 2 to 4 radiators. The power divider network is located in the middle of the radiating layer, and the radiators are evenly distributed around the power divider network. Each radiator includes a radiator body, a first jumper, a second jumper group, and 3 to 18 groups of absorbing stubs. The radiator body is located in the middle of the radiator body, and the absorbing stubs surround the radiator body. The power divider network includes a first microstrip with a number matching the number of radiators. The radiator body is composed of a main microstrip. One end of the first microstrip is connected to one end of the main microstrip at a first point. The main microstrip extends and bends around the first point. The absorbing stubs include an arc-shaped microstrip and a first lumped element. One end of the arc-shaped microstrip is grounded through the first lumped element, and the other end is connected to the main microstrip at a position located at the outer edge of the radiator body. The current direction of the arc-shaped microstrip is opposite to the current direction of the main microstrip.

[0003] However, existing stable-coverage UHF RFID planar near-field antennas also have certain shortcomings. First, existing stable-coverage UHF RFID planar near-field antennas use simple heat dissipation holes to cool the electrical components inside the housing, resulting in weak self-heating ventilation. Second, existing stable-coverage UHF RFID planar near-field antennas use fasteners and screws to fix the housing cover, requiring the use of specific assembly tools when it is necessary to repair the electrical components, which is obviously inconvenient for users. Therefore, improvements are needed. Summary of the Invention

[0004] The purpose of this invention is to provide a stable coverage UHF RFID planar near-field antenna to solve the problems mentioned in the background art.

[0005] To address the above problems, the present invention provides a technical solution:

[0006] A stable coverage UHF RFID planar near-field antenna includes a base, a housing, a cover, a dustproof net, a disassembly mechanism, and a heat dissipation mechanism. The housing is fixedly connected to the upper end of the base. The housing is provided with an interface. The upper end of the housing contacts the cover. A heat dissipation groove is opened inside the housing. A dustproof net is fixedly connected inside the heat dissipation groove. The disassembly mechanism and the heat dissipation mechanism are jointly provided on the base and the housing.

[0007] Preferably, the disassembly mechanism includes a fixed cylinder, a support rod, a slide groove, a first motor, a take-up reel, a traction rope, a guide rod, a second motor, a threaded rod, a support plate, and a first spring. The fixed cylinder is fixedly connected to the upper end of the base, and the support rod is slidably connected inside the fixed cylinder. The support rod is fixedly connected to the shell cover. A slide groove is provided inside the fixed cylinder. The first motor is fixedly installed on the shell. A take-up reel is fixedly sleeved on the outer side of the output shaft of the first motor. A traction rope is provided on the take-up reel. The traction rope contacts the slide groove and is fixedly connected to the support rod. Through the arrangement of the first motor, the take-up reel, the traction rope, and other structures, the support rod can be pulled, thereby causing the support rod to move.

[0008] Preferably, a guide rod is slidably connected inside the housing, and the guide rod contacts the traction rope. A second motor is fixedly installed inside the housing, and a threaded rod is fixedly connected to the output shaft of the second motor. A support plate is threadedly connected to the outside of the threaded rod, and the support plate is slidably connected to the housing. The support plate is fixedly connected to the guide rod, and a first spring is welded to the support rod. The other end of the first spring is welded to the base. The guide rod can guide the traction rope.

[0009] Preferably, the heat dissipation mechanism includes a mounting cylinder, a third motor, a first bevel gear, a mounting rod, a rotating rod, a second bevel gear, fan blades, a rotating disk, a filter, a mounting plate, brush bristles, a cylinder, a gear plate, a positioning hole, a sleeve, a fixed disk, a connecting rod, a second spring, a positioning ball, a rotating shaft, gears, and a guide plate. The mounting cylinder is fixedly sleeved inside the housing. A third motor is fixedly mounted on the mounting cylinder. The output shaft of the third motor is rotatably connected to the mounting cylinder. A first bevel gear is fixedly sleeved on the outer side of the output shaft of the third motor. The mounting rod is fixedly connected inside the mounting cylinder. A rotating rod is mounted inside the mounting rod via a bearing. A second bevel gear is fixedly sleeved on the outer side of the rotating rod, and the second bevel gear meshes with a first bevel gear. A fan blade is fixedly connected to the rotating rod, and a rotating disk is fixedly connected to the rotating rod. The rotating disk is rotatably connected to the mounting cylinder, and a filter screen is fixedly connected inside the rotating disk. A mounting plate is fixedly connected to the mounting cylinder, and the mounting plate is in contact with the rotating disk. Brush bristles are fixedly connected to the mounting plate, and the brush bristles are in contact with the filter screen. The fan blades are designed to dissipate heat from the electrical components inside the housing.

[0010] Preferably, a cylinder is fixedly installed inside the base. The telescopic end of the cylinder is fixedly connected to a toothed plate by screws. A positioning hole is provided inside the housing. A sleeve is fixedly connected to the telescopic end of the cylinder. The sleeve is slidably connected to the housing. A fixed plate is fixedly connected inside the sleeve. A connecting rod is slidably connected inside the fixed plate. A second spring is provided on the outside of the connecting rod. One end of the second spring is welded to the connecting rod, and the other end of the second spring is welded to the fixed plate. A positioning ball is fixedly connected to the connecting rod. The positioning ball is slidably connected to the positioning hole. A rotating shaft is installed inside the housing through a bearing. A gear is fixedly sleeved on the outside of the rotating shaft. The gear meshes with the toothed plate. A guide plate is fixedly sleeved on the outside of the rotating shaft. The guide plate can guide the airflow inside the housing and avoid the problem of local high temperature.

[0011] Preferably, multiple filters are provided, and the multiple filters are arranged in a circular array on the rotating disk. By setting the filters, dust and other impurities in the air can be filtered out.

[0012] Preferably, multiple bristles are provided, and the multiple bristles are evenly distributed on the mounting plate. By providing bristles, dust and other impurities attached to the filter screen can be cleaned.

[0013] Preferably, multiple positioning holes are provided, and the multiple positioning holes are evenly distributed on the housing. The positioning holes facilitate subsequent locking and positioning with positioning balls.

[0014] The beneficial effects of this invention are as follows: This invention relates to a stable-coverage UHF RFID planar near-field antenna, which features quick removal of the housing cover for easy maintenance by operators, and effective heat dissipation for the electrical components inside the housing. In practical use, compared with traditional stable-coverage UHF RFID planar near-field antennas, it has the following beneficial effects:

[0015] Firstly, by setting up a disassembly mechanism, a fixed cylinder, a support rod, a slide groove, a motor one, a winding wheel, a traction rope, a guide rod, a motor two, a threaded rod, and a support plate, the traction rope can be wound up by the motor one and the winding wheel to pull the support rod upward, thereby pushing the cover to move and detach it from the housing, making it easier for operators to inspect and use. Under the action of the motor two and the threaded rod, the guide rod can be pushed to keep the traction rope taut at all times, so as to ensure the effective traction of the traction rope.

[0016] Secondly, by incorporating a heat dissipation mechanism, mounting cylinder, motor three, bevel gear one, mounting rod, rotating rod, bevel gear two, fan blades, rotating disk, filter screen, mounting plate, brush bristles, cylinder, gear plate, positioning hole, sleeve, fixing disk, and connecting rod, the internal electrical components can be cooled through the motor three, rotating rod, and fan blades. The filter screen removes dust and other impurities from the air, and the brush bristles clean the dust and other impurities adhering to the filter screen. The cylinder, gear plate, and gears drive the air guide plate to rotate, thereby adjusting its position to regulate the airflow direction and prevent localized high temperatures within the casing. Attached Figure Description

[0017] For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0018] Figure 1 This is a perspective view of the overall structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 A front sectional view;

[0020] Figure 3 For the present invention Figure 2 Enlarged view of the disassembly mechanism;

[0021] Figure 4 For the present invention Figure 3 Enlarged view of point A;

[0022] Figure 5 For the present invention Figure 3 Side view of the winding reel;

[0023] Figure 6 For the present invention Figure 2 Enlarged view of the heat dissipation mechanism;

[0024] Figure 7 For the present invention Figure 6 Enlarged view of point B;

[0025] Figure 8 For the present invention Figure 6 Enlarged view of point C;

[0026] Figure 9 For the present invention Figure 6 A side view of the gear.

[0027] In the diagram: 1. Base; 2. Housing; 3. Housing cover; 4. Dustproof net; 5. Disassembly mechanism; 6. Heat dissipation mechanism; 51. Fixing cylinder; 52. Support rod; 53. Slide groove; 54. Motor 1; 55. Rewinding reel; 56. Traction rope; 57. Guide rod; 58. Motor 2; 59. Threaded rod; 591. Support plate; 592. Spring 1; 61. Mounting cylinder; 62. Motor 3; 63. Bevel gear 1; 64. 65. Mounting rod; 66. Rotating rod; 67. Bevel gear II; 68. Fan blade; 69. Rotating disc; 60. Filter screen; 61. Mounting plate; 62. Brush bristles; 693. Cylinder; 694. Gear plate; 695. Positioning hole; 696. Sleeve; 697. Fixing disc; 698. Connecting rod; 699. Spring II; 6991. Positioning ball; 6992. Rotating shaft; 6993. Gear; 6994. Air guide plate. Detailed implementation method:

[0028] like Figure 1-9 As shown, the specific implementation adopts the following technical solution:

[0029] Example:

[0030] A stable coverage UHF RFID planar near-field antenna includes a base 1, a housing 2, a cover 3, a dustproof net 4, a disassembly mechanism 5, and a heat dissipation mechanism 6. The housing 2 is fixedly connected to the upper end of the base 1. The housing 2 is provided with an interface. The upper end of the housing 2 contacts the cover 3. A heat dissipation groove is opened inside the housing 2. The dustproof net 4 is fixedly connected inside the heat dissipation groove. The disassembly mechanism 5 and the heat dissipation mechanism 6 are jointly provided on the base 1 and the housing 2.

[0031] The disassembly mechanism 5 includes a fixed cylinder 51, a support rod 52, a sliding groove 53, a first motor 54, a take-up reel 55, a traction rope 56, a guide rod 57, a second motor 58, a threaded rod 59, a support plate 591, and a first spring 592. The fixed cylinder 51 is fixedly connected to the upper end of the base 1. The support rod 52 is slidably connected inside the fixed cylinder 51. The support rod 52 is fixedly connected to the cover 3. The sliding groove 53 is opened inside the fixed cylinder 51. The first motor 54 is fixedly installed on the housing 2. The take-up reel 55 is fixedly sleeved on the outer side of the output shaft of the first motor 54. The traction rope 56 is provided on the take-up reel 55. The traction rope 56 contacts the sliding groove 53 and is fixedly connected to the support rod 52. Through the arrangement of the first motor 54, the take-up reel 55, the traction rope 56, etc., the support rod 52 can be pulled, thereby making the support rod 52 move.

[0032] The housing 2 has a guide rod 57 slidably connected inside, which contacts the traction rope 56. A second motor 58 is fixedly installed inside the housing 2, and a threaded rod 59 is fixedly connected to the output shaft of the second motor 58. A support plate 591 is threadedly connected to the outside of the threaded rod 59, and the support plate 591 is slidably connected to the housing 2. The support plate 591 is fixedly connected to the guide rod 57. A first spring 592 is welded to the support rod 52, and the other end of the first spring 592 is welded to the base 1. The guide rod 57 guides the traction rope 56.

[0033] The heat dissipation mechanism 6 includes a mounting cylinder 61, a third motor 62, a first bevel gear 63, a mounting rod 64, a rotating rod 65, a second bevel gear 66, a fan blade 67, a rotating disk 68, a filter screen 69, a mounting plate 691, brush bristles 692, a cylinder 693, a toothed plate 694, a positioning hole 695, a sleeve 696, a fixed disk 697, a connecting rod 698, a second spring 699, a positioning ball 6991, a rotating shaft 6992, a gear 6993, and a guide plate 6994. The mounting cylinder 61 is fixedly sleeved inside the housing 2. A third motor 62 is fixedly mounted on the mounting cylinder 61. The output shaft of the third motor 62 is rotatably connected to the mounting cylinder 61. A first bevel gear 63 is fixedly sleeved on the outer side of the output shaft of the third motor 62. A mounting rod 64 is fixedly connected inside the housing 2. A rotating rod 65 is mounted inside the mounting rod 64 via a bearing. A second bevel gear 66 is fixedly sleeved on the outer side of the rotating rod 65. The second bevel gear 66 meshes with a first bevel gear 63. A fan blade 67 is fixedly connected to the rotating rod 65. A rotating disk 68 is fixedly connected to the rotating rod 65. The rotating disk 68 is rotatably connected to the mounting cylinder 61. A filter screen 69 is fixedly connected inside the rotating disk 68. A mounting plate 691 is fixedly connected to the mounting cylinder 61. The mounting plate 691 contacts the rotating disk 68. Brush bristles 692 are fixedly connected to the mounting plate 691. The brush bristles 692 contact the filter screen 69. The fan blade 67 is used to dissipate heat from the electrical components inside the housing 2.

[0034] The base 1 contains a cylinder 693, the telescopic end of which is fixedly connected to a toothed plate 694 by screws. The housing 2 has a positioning hole 695. The telescopic end of the cylinder 693 is fixedly connected to a sleeve 696, which is slidably connected to the housing 2. A fixed plate 697 is fixedly connected inside the sleeve 696, and a connecting rod 698 is slidably connected inside the fixed plate 697. A second spring 699 is provided on the outer side of the connecting rod 698, and one end of the second spring 699 is welded to the connecting rod 698. The other end of the spring 699 is welded to the fixed plate 697. A positioning ball 6991 is fixedly connected to the connecting rod 698. The positioning ball 6991 is slidably connected to the positioning hole 695. A rotating shaft 6992 is installed inside the housing 2 through a bearing. A gear 6993 is fixedly sleeved on the outside of the rotating shaft 6992. The gear 6993 meshes with the gear plate 694. A guide plate 6994 is fixedly sleeved on the outside of the rotating shaft 6992. The air guide plate 6994 can guide the airflow inside the housing 2 and avoid the problem of local high temperature.

[0035] The filter screen 69 is provided in multiple ways, and the multiple filter screens 69 are arranged in a ring array on the rotating disk 68. By setting the filter screens 69, dust and other impurities in the air can be filtered out.

[0036] The brush bristles 692 are provided in multiple ways and are evenly distributed on the mounting plate 691. The brush bristles 692 can be used to clean dust and other impurities attached to the filter screen 69.

[0037] The positioning holes 695 are provided in multiple ways and are evenly distributed on the housing 2. The positioning holes 695 facilitate subsequent locking and positioning with the positioning ball 6991.

[0038] The invention is used as follows: When in use, the starter motor 62 drives the bevel gear 63 to rotate. Under the meshing relationship, the bevel gear 63 is forced to drive the bevel gear 66 to rotate, the bevel gear 66 is forced to drive the rotating rod 65 to rotate, and the rotating rod 65 is forced to drive the fan blade 67 to rotate. Under the rotation of the fan blade 67, air can be blown to accelerate the rapid flow of air, thereby heat dissipating the electrical components inside the housing 2. Under the action of the filter screen 69, dust and other impurities in the air can be cleaned. When the rotating rod 65 is forced to rotate, it can drive the rotating disk 68 to rotate, thereby driving the filter screen 69 to rotate, so that the bristles 692 slide along the surface of the filter screen 69 to clean the dust and other impurities attached to the filter screen 69, avoiding the problem of poor air circulation caused by the filter screen 69 being blocked.

[0039] The starting cylinder 693 pushes the gear plate 694 to move, and in the meshing relationship, it drives the gear 6993 to rotate. The gear 6993, under force, drives the rotating shaft 6992 to rotate, and the rotating shaft 6992, under force, drives the air guide plate 6994 to rotate, thereby adjusting the position of the air guide plate 6994 and guiding the airflow to avoid the problem of local high temperature inside the housing 2. During this process, the positioning hole 695 is pressed against the positioning ball 6991, and the positioning ball 6991 is pushed by force to move the connecting rod 698. When the spring 699 is subjected to force and deforms, the positioning ball 6991 is disengaged from the positioning hole 695. Under the action of force, the positioning ball 6991 slides along the inner wall of the housing 2. When the positioning ball 6991 slides into the next positioning hole 695 in the housing 2, the spring 699 returns to its original shape to pull the positioning ball 6991 into the positioning hole 695, thereby limiting the extension and retraction end of the cylinder 693, and then limiting the toothed plate 694, ultimately enabling precise control of the air guide plate 6994.

[0040] When it is necessary to inspect and repair the electrical components inside the housing 2, start motor 54 drives the winding wheel 55 to rotate. The winding wheel 55 is forcefully wound up the traction rope 56. The traction rope 56 is forcefully slid along the surface of the guide rod 57 and pulls the support rod 52 upward. The spring 592 is forcefully deformed, and the support rod 52 is forcefully pushed the housing cover 3 upward, ultimately causing the housing cover 3 to detach from the housing 2, making it easier for subsequent maintenance personnel to use. When the traction rope 56 becomes loose after long-term use, start motor 58 drives the threaded rod 59 to rotate. Under the threaded connection, the support plate 591 can be pushed upward to push the guide rod 57 to move, thereby tightening the traction rope 56 to ensure the traction effect of the traction rope 56.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A stable coverage of ultra-high frequency RFID planar near-field antenna, comprising a base (1), a shell (2), a shell cover (3), a dust screen (4), a disassembly mechanism (5) and a heat dissipation mechanism (6), characterized in that: The upper end of the base (1) is fixedly connected with a shell (2), the shell (2) is provided with a plug interface, the upper end of the shell (2) is in contact with a shell cover (3), the shell (2) is provided with a heat dissipation groove, the heat dissipation groove is fixedly connected with a dust screen (4), the base (1) and the shell (2) are provided with a dismounting mechanism (5) together, the base (1) and the shell (2) are provided with a heat dissipation mechanism (6) together; The dismounting mechanism (5) comprises a fixed cylinder (51), a supporting rod (52), a sliding groove (53), a motor one (54), a winding wheel (55), a traction rope (56), a guide rod (57), a motor two (58), a threaded rod (59), a supporting plate (591) and a spring one (592), the upper end of the base (1) is fixedly connected with the fixed cylinder (51), the supporting rod (52) is slidably connected in the fixed cylinder (51), the supporting rod (52) is fixedly connected with the shell cover (3), the sliding groove (53) is formed in the fixed cylinder (51), the motor one (54) is fixedly installed on the shell (2), the winding wheel (55) is fixedly sleeved on the outer side of the output shaft one of the motor one (54), the traction rope (56) is arranged on the winding wheel (55), the traction rope (56) is in contact with the sliding groove (53), and the traction rope (56) is fixedly connected with the supporting rod (52); The guide rod (57) is slidably connected in the shell (2) and in contact with the traction rope (56), the motor two (58) is fixedly installed in the shell (2), the threaded rod (59) is fixedly connected on the output shaft two of the motor two (58), the supporting plate (591) is threadedly connected on the outer side of the threaded rod (59), the supporting plate (591) is slidably connected with the shell (2), the supporting plate (591) is fixedly connected with the guide rod (57), the spring one (592) is welded on the supporting rod (52), and the other end of the spring one (592) is welded with the base (1); The heat dissipation mechanism (6) includes a mounting cylinder (61), a motor three (62), a bevel gear one (63), a mounting rod (64), a rotating rod (65), a bevel gear two (66), a fan blade (67), a rotating disc (68), a filter screen (69), a mounting plate (691), a brush (692), a cylinder (693), a toothed plate (694), a positioning hole (695), a sleeve (696), a fixed disc (697), a connecting rod (698), a spring two (699), a positioning ball (6991), a rotating shaft (6992), a gear (6993), and an air deflector (6994). The shell (2) is fixedly sleeved with the mounting cylinder (61). The mounting cylinder (61) is fixedly installed with the motor three (62). The output shaft three of the motor three (62) is rotatably connected with the mounting cylinder (61). The output shaft three of the motor three (62) is fixedly sleeved with the bevel gear one (63). The mounting cylinder (61) is fixedly connected with the mounting rod (64). The mounting rod (64) is rotatably installed with the rotating rod (65). The outer side of the rotating rod (65) is fixedly sleeved with the bevel gear two (66). The bevel gear two (66) is engaged with the bevel gear one (63). The rotating rod (65) is fixedly connected with the fan blade (67). The rotating rod (65) is fixedly connected with the rotating disc (68). The rotating disc (68) is rotatably connected with the mounting cylinder (61). The rotating disc (68) is fixedly connected with the filter screen (69). The mounting cylinder (61) is fixedly connected with the mounting plate (691). The mounting plate (691) is in contact with the rotating disc (68). The mounting plate (691) is fixedly connected with the brush (692). The brush (692) is in contact with the filter screen (69). The base (1) is fixedly installed with the cylinder (693). The telescopic end of the cylinder (693) is fixedly connected with the toothed plate (694) through screws. The shell (2) is provided with the positioning hole (695). The telescopic end of the cylinder (693) is fixedly connected with the sleeve (696). The sleeve (696) is slidably connected with the shell (2). The sleeve (696) is fixedly connected with the fixed disc (697). The fixed disc (697) is slidably connected with the connecting rod (698). The outer side of the connecting rod (698) is provided with the spring two (699). One end of the spring two (699) is welded with the connecting rod (698). The other end of the spring two (699) is welded with the fixed disc (697). The connecting rod (698) is fixedly connected with the positioning ball (6991). The positioning ball (6991) is slidably connected with the positioning hole (695). The shell (2) is rotatably installed with the rotating shaft (6992). The outer side of the rotating shaft (6992) is fixedly sleeved with the gear (6993). The gear (6993) is engaged with the toothed plate (694). The outer side of the rotating shaft (6992) is fixedly sleeved with the air deflector (6994).

2. A stable coverage UHF RFID planar near field antenna according to claim 1, characterized in that: The filter screen (69) is provided with a plurality of filter screens (69) arranged in an annular array on the rotating disc (68).

3. A stable coverage UHF RFID planar near field antenna according to claim 1, characterized in that: The brush (692) is provided with a plurality of brush (692) uniformly distributed on the mounting plate (691).

4. A stable coverage UHF RFID planar near field antenna according to claim 1, characterized in that: The positioning hole (695) is provided with a plurality of positioning holes (695) uniformly distributed on the shell (2).

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