Protection device suitable for patch antenna

Abstract

The invention relates to the technical field of antennas, in particular to a protection device suitable for a patch antenna and used for protecting a coaxial connector of the patch antenna, and the protection device comprises a fixed base, an anti-falling jacket and a release assembly; the fixed foundation comprises a rectangular foundation, a rectangular slide way and a fixed lock head; the anti-falling jacket comprises a rectangular sliding block, a rectangular upper top, a telescopic lock head and a circular channel; the releasing assembly comprises a releasing side hole, a swing arm middle shaft, a small-diameter gear and a swing arm body. According to the protection device provided by the invention, the anti-drop jacket can firmly fix the coaxial cable and can be inserted into the fixed base in a one-way manner, and when the coaxial cable is pulled, the anti-drop jacket can not return backwards in the fixed base, so that the connection structure of the coaxial cable plug and the coaxial cable socket can be effectively protected; even if the pulling force is too large, the coaxial cable will be broken at the joint with the anti-falling jacket, and the coaxial cable plug and the coaxial cable socket are protected.

Description

Technical Field

[0001] This application relates to the field of antenna technology, and more specifically to a protective device suitable for patch antennas. Background Technology

[0002] The back-fed patch antenna is a classic microstrip antenna, consisting of a dielectric substrate, a metal ground plane, and a radiating patch. Signals are fed from the back of the ground plane through the substrate and into the radiating patch via the inner conductor probe of a coaxial connector. This feeding method is robust, easy to manufacture, and effectively couples energy to the patch. Impedance matching can be easily achieved by adjusting the position of the probe under the patch. Due to its low profile, compact size, lightweight design, and ease of conformal design, this antenna is widely used in microwave systems such as satellite communications, radar, and mobile terminals, and is one of the preferred antenna types for modern wireless applications.

[0003] However, existing back-feed coaxial cables have the following problems: there is a lack of protection between the plug and socket of the coaxial connector. During use, the fragile connection structure of the plug and socket is often damaged due to dragging the coaxial cable. Therefore, it is necessary to design a protective device that can effectively protect the above structure. Summary of the Invention

[0004] A protective device for patch antennas is provided to protect the coaxial connector of the patch antenna, i.e., to protect the coaxial cable plug and the coaxial cable socket. The protective device includes a fixing base, an anti-detachment clip, and a release assembly. The fixed foundation includes a rectangular foundation, a rectangular slide rail that runs through the rectangular foundation in the front-to-back direction, and a fixed lock head located on the upper part of the left inner wall of the rectangular slide rail. The fixed lock head is a right-angled triangular block with its hypotenuse tilted from the left rear to the right front. The anti-detachment sleeve is slidably disposed in a rectangular slide rail. The anti-detachment sleeve includes a rectangular slider, a rectangular top formed on the right side of the upper end face of the rectangular slider, a telescopic lock head disposed on the left side of the rectangular top, and a circular channel passing through the rectangular slider in the front-back direction. The telescopic lock head includes a horizontal sliding hole, a side opening formed on the left side of the horizontal sliding hole, a guide shaft set on the right side of the horizontal sliding hole, a locking sleeve slidably sleeved on the guide shaft, a spring retaining ring formed on the outer wall of the locking sleeve and located in the horizontal sliding hole, and a reset spring set on the right side inside the horizontal sliding hole and abutting against the spring retaining ring. The release assembly includes a release side hole formed on the left side of the inner wall of the rectangular slide, a swing arm central shaft disposed in the release side hole, a small diameter gear disposed on the release central shaft, and a swing arm body disposed on the small diameter gear. The reset assembly is connected to the release swing arm and is used to drive the release swing arm to swing clockwise.

[0005] As one specific embodiment, the reset assembly is a torsion spring wound around the central shaft of the swing arm.

[0006] As another specific embodiment, the reset assembly has the following specific structure, including at least a reset chamber, a reset rotor, and a holding device; The reset chamber includes a reset base located on the left side of the rectangular base, a reset circular cavity located within the reset base and communicating with the release side hole, a central circular shaft located within the reset circular cavity, a screw longitudinal hole passing through the central shaft, an upper rotating hole formed at the upper end of the screw longitudinal hole, a horizontal through hole formed in the upper half of the central circular shaft, a screw tube insertion hole formed below the horizontal through hole, and a non-rotating key formed on the inner wall of the screw tube insertion hole. The reset rotor includes a rotatable follower cylinder sleeved on a central circular shaft, a large-diameter gear formed on the upper end of the follower cylinder and cooperating with a small-diameter gear, an enlarged circular hole formed on the upper half of the inner wall of the follower cylinder, a spiral slot formed on the inner wall of the enlarged circular hole, and a torsion spring wound around the lower end of the outer wall of the follower cylinder. One end of the torsion spring is connected to the follower cylinder and the other end is connected to the inner wall of the reset cavity. The lower end of the outer wall of the follower cylinder is provided with a receiving annular groove for accommodating the torsion spring. The retaining device includes a driven slip ring disposed in the enlarged circular hole and sleeved on the central circular shaft, a plug-in terminal formed on the inner wall of the driven slip ring and engaged with the spiral slot, and a perforated insert plate formed on the inner wall of the driven slip ring and passing through the transverse through hole. The reset assembly also includes a rotatable external threaded rod disposed in the longitudinal hole of the screw, the external threaded rod passing through the perforated insert plate. The retaining device also includes a torsion terminal disposed at the lower end of the external threaded rod, an upper stop plate disposed at the upper end of the external threaded rod at the upper rotating hole, an internal threaded tube slidably disposed on the inner wall of the screw tube insertion hole and screwed to the external threaded rod, and an anti-rotation key hole formed on the outer wall of the internal threaded tube and engaged with the anti-rotation key.

[0007] The patch antenna includes at least a radiating patch, a dielectric substrate, and a base plate. A coaxial cable socket is provided below the base plate, and the coaxial cable socket is used to connect a coaxial cable plug and a coaxial cable.

[0008] The technical solution of the present invention has the following technical effects: The protective device described in this case has an anti-detachment sleeve that can firmly fix the coaxial cable and can be inserted into the fixed foundation in one direction. When the coaxial cable is pulled, the anti-detachment sleeve cannot retract within the fixed foundation, thus effectively protecting the connection structure of the coaxial cable plug and the coaxial cable socket. Even if the pulling force is too great, the coaxial cable will break at the connection with the anti-detachment sleeve, protecting the coaxial cable plug and the coaxial cable socket.

[0009] The protective device described in this case allows the anti-detachment sleeve to be retracted when needed for overall maintenance or replacement, or the retraction of the anti-detachment sleeve can be locked by a retaining device. First, under normal conditions, the anti-detachment sleeve moves forward significantly, causing the release component to swing clockwise to reset. Then, pull the anti-detachment sleeve backward again to remove it. Then, by holding the device to drive the release member to rotate counterclockwise to the limit position and maintaining this posture, even if the anti-detachment sleeve is pushed forward significantly, it cannot drive the release component to reset clockwise, and the anti-detachment sleeve cannot retract. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of one embodiment of the patch antenna protection device.

[0012] Figure 2 This is a schematic diagram of one embodiment of the protection device.

[0013] Figure 3 This is a rear view of one embodiment of the protective device.

[0014] Figure 4 yes Figure 3 Sectional view of section AA in the first state.

[0015] Figure 5 yes Figure 3 Sectional view of the second state at section AA.

[0016] Figure 6 yes Figure 3 Sectional view of the third state at section AA.

[0017] Figure 7 yes Figure 3 Sectional view of the fourth state at section AA.

[0018] Figure 8 yes Figure 3 Sectional view of the fifth state at section AA.

[0019] Figure 9 yes Figure 6 Right sectional view of section BB.

[0020] Figure 10 yes Figure 6 A partial sectional view of the first state of section BB in the middle.

[0021] Figure 11 yes Figure 6 Partial sectional view of the second state of section BB in the middle.

[0022] Figure 12 This is a cross-sectional view of one embodiment of the anti-detachment jacket.

[0023] Figure 13 yes Figure 13 Enlarged schematic diagram of section C.

[0024] Figure 14 This is a schematic diagram of one embodiment of the release component and reset assembly.

[0025] Figure 15 This is a schematic diagram of one embodiment of the release component and reset assembly.

[0026] The numbers in the diagram are as follows: 1. Fixed foundation; 11. Rectangular foundation; 12. Rectangular slide rail; 13. Fixed lock head; 2. Anti-detachment sleeve; 21. Rectangular slider; 22. Rectangular top; 23. Telescopic lock head; 231. Horizontal sliding hole; 232. Side opening; 233. Guide shaft; 234. Locking sleeve; 235. Spring retaining ring; 236. Return spring; 24. Circular channel; 25. Inner sleeve clamp. 3. Release assembly; 31. Release side hole; 32. Swing arm central shaft; 33. Small diameter gear; 34. Swing arm body; 4. Reset assembly; 41. Reset chamber; 411. Reset base; 412. Reset circular cavity; 413. Central circular shaft; 414. Screw longitudinal hole; 415. Upper rotating hole; 416. Horizontal through hole; 417. Screw tube insertion hole; 418. Anti-rotation key; 42. Reset rotor; 421. Follower cylinder; 422. Large diameter gear; 423. Widened circular hole; 424. Spiral slot; 425. Torsion spring; 426. Receiving ring groove; 43. Holding device; 431. Driven slip ring; 432. Plug-in terminal; 433. Perforated insert plate; 434. Externally threaded rod; 435. Torsion terminal; 436. Upper stop plate; 437. Internally threaded tube; 438. Anti-rotation key hole; 9. Patch antenna, 91. Radiation patch, 92. Dielectric board, 93. Base plate, 94. Coaxial cable socket, 95. Coaxial cable plug, 96. Coaxial cable. Detailed Implementation

[0027] A protective device for patch antennas is provided to protect the coaxial connector of patch antenna 9, namely, to protect the coaxial cable plug 95 and the coaxial cable socket 94. The protective device 8 includes a fixing base 1, an anti-detachment sleeve 2, and a release component 3. The fixed base 1 includes a rectangular base 11, a rectangular slide 12 that runs through the rectangular base 12 in the front-back direction, and a fixed lock head 13 located above the inner left wall of the rectangular slide 12. The fixed lock head 13 is a right-angled triangular block with its hypotenuse tilted from the left rear to the right front. The anti-detachment sleeve 2 is slidably disposed in the rectangular slide rail 12. The anti-detachment sleeve 2 includes a rectangular slider 21, a rectangular top 22 formed on the right side of the upper end face of the rectangular slider 21, a telescopic lock head 23 disposed on the left side of the rectangular top 22, and a circular channel 24 that runs through the rectangular slider 21 in the front-back direction. The telescopic lock head 23 includes a horizontal sliding hole 231, a side opening 232 formed on the left side of the horizontal sliding hole 231, a guide shaft 233 set on the right side of the horizontal sliding hole 231, a locking sleeve 234 slidably sleeved on the guide shaft 233, a spring retaining ring 235 formed on the outer wall of the locking sleeve 234 and located in the horizontal sliding hole 231, and a reset spring 236 set on the right side inside the horizontal sliding hole 231 and abutting against the spring retaining ring 235. It should be noted that, as per the instruction manual... Figure 14 , 15 As shown, a front stop block 14 is provided at the front end of the left and right walls of the rectangular slide 12. The front stop block 14 can effectively stop the anti-detachment sleeve 2 from sliding forward out of the fixed base 1.

[0028] The release assembly 3 includes a release side hole 31 formed on the left side of the inner wall of the rectangular slide 12, a swing arm central shaft 32 disposed in the release side hole 31, a small diameter gear 33 rotatably disposed on the release central shaft 32, and a swing arm body 34 disposed on the small diameter gear 33. The reset assembly 4 is connected to the release arm 31 to drive the release arm 31 to swing clockwise.

[0029] In one specific embodiment, the reset assembly 4 is a torsion spring wound around the central shaft 32 of the swing arm.

[0030] As another specific embodiment, the reset assembly 4 has the following specific structure, including at least a reset chamber 41, a reset rotor 42, and a holding device 43; The reset chamber 41 includes a reset base 411 disposed on the left side of the rectangular base 11, a reset circular cavity 412 disposed in the reset base 411 and communicating with the release side hole 31, a central circular shaft 413 disposed in the reset circular cavity 412, a screw longitudinal hole 414 passing through the central shaft 413, an upper rotating hole 415 formed at the upper end of the screw longitudinal hole 414, a horizontal through hole 416 formed in the upper half of the central circular shaft 413, a screw tube insertion hole 417 formed below the horizontal through hole 416, and a non-rotating key 418 formed on the inner wall of the screw tube insertion hole 417. The reset rotor 42 includes a follower cylinder 421 rotatably sleeved on a central circular shaft 413, a large diameter gear 422 formed on the upper end of the follower cylinder 421 and cooperating with the small diameter gear 33, an enlarged circular hole 423 formed on the upper half of the inner wall of the follower cylinder 421, a spiral slot 424 formed on the inner wall of the enlarged circular hole 423, and a torsion spring 425 wound around the lower end of the outer wall of the follower cylinder 421. One end of the torsion spring 425 is connected to the follower cylinder 421 and the other end is connected to the inner wall of the reset cavity 412. The lower end of the outer wall of the follower cylinder 421 is provided with a receiving annular groove 426 for accommodating the torsion spring 425. The retaining device 43 includes a driven slip ring 431 disposed in the enlarged circular hole 423 and sleeved on the central circular shaft 41, a plug-in terminal 432 formed on the inner wall of the driven slip ring 431 and cooperating with the spiral slot 424, and a perforated insert plate 433 formed on the inner wall of the driven slip ring 431 and passing through the transverse through hole 416. The reset assembly 4 also includes a rotatable external threaded rod 434 disposed in the longitudinal hole 414 of the screw, the external threaded rod 434 passing through the perforated insert plate 433. The retaining device 43 also includes a torsion terminal 435 disposed at the lower end of the external threaded rod 434, an upper stop plate 436 disposed at the upper end of the external threaded rod 434 located at the upper rotating hole 45, an internal threaded tube 437 slidably disposed on the inner wall of the screw tube insertion hole 417 and screwed to the external threaded rod 434, and an anti-rotation key hole 438 formed on the outer wall of the internal threaded tube 437 and cooperating with the anti-rotation key 418.

[0031] The patch antenna 9 includes at least a radiating patch 91, a dielectric substrate 92, and a base plate 93. A coaxial cable socket 94 is provided below the base plate 93. The coaxial cable socket 94 is used to connect a coaxial cable plug 95 and a coaxial cable 96.

[0032] It should be noted that the inner wall of the anti-detachment sleeve 2 is fixedly connected to the coaxial cable 96. Furthermore, the inner wall of the anti-detachment sleeve 2 and the outer wall of the coaxial cable 96 are bonded together using an adhesive. Alternatively, the inner wall of the anti-detachment sleeve 2 is provided with an inner clamp 25 for clamping the coaxial cable 96.

[0033] It should be noted that, as per the instruction manual... Figure 3As shown, the upper and lower halves of the rectangular slider 21 are formed separately and then fixedly connected to prevent the coaxial cable plug 95 from being unable to pass through the circular channel 24.

[0034] The protective device described in this case, wherein the fixed base 1 allows for unidirectional insertion of the anti-detachment sleeve 2, preventing damage to the coaxial cable plug 95 and coaxial cable socket 94 when the user accidentally disconnects the coaxial cable 96. The specific steps are as follows: Step 1, as per the attached instruction manual. Figure 4 , 5 As shown, the anti-loosening sleeve 2 is inserted into the rectangular slide rail 12 from back to front; when the telescopic lock head 23 passes the fixed lock head 13, it is squeezed and contracted by the fixed lock head 13, and the front end of the locking sleeve 234 touches the swing arm body 34, thereby driving the release component 3 to rotate counterclockwise; after the telescopic lock head 23 completely passes the fixed lock head 13, it resets and pops out to the left. At this time, the anti-loosening sleeve 2 can slide forward a distance, but it cannot move backward due to the blocking effect of the fixed lock head 13 on the telescopic lock head 23.

[0035] The protective device for patch antennas described in this case can also remove the anti-detachment sleeve 2 and coaxial cable 96 when needed. The specific steps are as follows: Step 2, as per the instruction manual. Figure 6 , 7 As shown in Figure 8, continue to move the anti-slip sleeve 2 forward; The telescopic lock head 23 drives the release component 3 to rotate counterclockwise until the telescopic lock head 23 completely passes through the release component 3; The release component 3 is reset by rotating clockwise under the action of the reset assembly 4; Pull the anti-loosening sleeve 2 backward, the release component 3 squeezes the telescopic lock head 23 to retract it, the telescopic lock head 23 passes the right side of the release component 3 and the fixed lock head 13, and the anti-loosening sleeve 2 exits from the fixed base 1.

[0036] The protective device for patch antennas described in this case provides multiple technical solutions to achieve clockwise reset of the release component 3. To prevent the user from removing the anti-detachment clip 2 from the fixed base 1 as described in step 2, a foolproof retaining device 43 is also provided. This can be achieved by performing step 3 after step 1. As per the instruction manual Figure 9 , 10 As shown: Rotate the torsion terminal 435 and the external threaded rod 434, and the external threaded rod 434 drives the internal threaded tube 437 and the anti-rotation key hole 438 to move upward. The anti-rotation key hole 438 acts on the driven slip ring 431, the plug-in terminal 432, and the perforated insert plate 433 to move upwards. The plug-in terminal 432 acts on the spiral slot 424, thereby driving the follower cylinder 421 and the large-diameter gear 422 to rotate. The large-diameter gear 422 drives the release component 3 to rotate counterclockwise until the release component 3 is completely retracted into the release side hole 31 and maintains this posture. Since the release component 3 always maintains the retracted posture, even if the operation is performed according to step 2 in this state, the release component 3 cannot guide the telescopic lock head 23 to retract because it cannot swing clockwise to reset, and the anti-disengagement sleeve 2 cannot retract.

[0037] It should be noted that the helix angle of the spiral slot 424 is greater than the friction angle, thereby avoiding "self-locking" between the spiral slot 424 and the plug-in terminal 432. This ensures that the driven slip ring 431 and the plug-in terminal 432 can be moved by rotating the spiral slot 424, and the spiral slot 424 can be rotated by moving the driven slip ring 431 and the plug-in terminal 432.

Claims

1. A protective device for patch antennas, used to protect the coaxial connector of a patch antenna (9), characterized in that: The protective device (8) includes a fixed base (1), an anti-detachment clip (2), and a release component (3); The fixed foundation (1) includes a rectangular foundation (11), a rectangular slide (12) that runs through the rectangular foundation (12) in the front-back direction, and a fixed lock (13) located on the upper left inner wall of the rectangular slide (12). The anti-detachment sleeve (2) is slidably disposed in the rectangular slide (12). The anti-detachment sleeve (2) includes a rectangular slider (21), a rectangular top (22) formed on the right side of the upper end face of the rectangular slider (21), a telescopic lock head (23) disposed on the left side of the rectangular top (22), and a circular channel (24) that runs through the rectangular slider (21) in the front-back direction. The telescopic lock head (23) includes a horizontal sliding hole (231), a side opening (232) formed on the left side of the horizontal sliding hole (231), a guide shaft (233) set on the right side of the horizontal sliding hole (231), a locking sleeve (234) slidably sleeved on the guide shaft (233), a spring retainer (235) formed on the outer wall of the locking sleeve (234) and located in the horizontal sliding hole (231), and a reset spring (236) set on the right side inside the horizontal sliding hole (231) and abutting against the spring retainer (235). The release assembly (3) includes a release side hole (31) formed on the left side of the inner wall of the rectangular slide (12), a swing arm central shaft (32) disposed in the release side hole (31), a small diameter gear (33) rotatably disposed on the release central shaft (32), and a swing arm body (34) disposed on the small diameter gear (33). The reset assembly (4) is connected to the release arm (31) to drive the release arm (31) to swing clockwise.

2. The protective device for patch antennas according to claim 1, characterized in that: The reset assembly (4) is a torsion spring wound around the central shaft (32) of the swing arm.

3. The protective device for patch antennas according to claim 1, characterized in that: The reset assembly (4) includes a reset chamber (41) and a reset rotor (42); The reset chamber (41) includes a reset base (411) disposed on the left side of the rectangular base (11), a reset circular cavity (412) disposed in the reset base (411) and communicating with the release side hole (31), a central circular shaft (413) disposed in the reset circular cavity (412), a screw longitudinal hole (414) through the central shaft (413), an upper rotating hole (415) formed on the upper end of the screw longitudinal hole (414), a horizontal through hole (416) formed on the upper half of the central circular shaft (413), a screw tube insertion hole (417) formed below the horizontal through hole (416), and a non-rotating key (418) formed on the inner wall of the screw tube insertion hole (417). The reset rotor (42) includes a follower cylinder (421) rotatably sleeved on a central round shaft (413), a large diameter gear (422) formed on the upper end of the follower cylinder (421) and cooperating with a small diameter gear (33), an enlarged round hole (423) formed on the upper half of the inner wall of the follower cylinder (421), a spiral slot (424) formed on the inner wall of the enlarged round hole (423), and a torsion spring (425) wound around the lower end of the outer wall of the follower cylinder (421). One end of the torsion spring (425) is connected to the follower cylinder (421) and the other end is connected to the inner wall of the reset cavity (412).

4. A protective device for patch antennas according to claim 3, characterized in that: The reset assembly (4) further includes a holding device (43) for achieving attitude locking. The holding device (43) includes a driven slip ring (431) disposed in the enlarged circular hole (423) and sleeved on the central circular shaft (41), a plug terminal (432) formed on the inner wall of the driven slip ring (431) and cooperating with the screw slot (424), and a perforated insert plate (433) formed on the inner wall of the driven slip ring (431) and passing through the transverse through hole (416). The reset assembly (4) also includes a rotatable external thread disposed in the longitudinal hole (414) of the screw. The rod (434) is provided through the perforated insert plate (433). The retaining device (43) also includes a torsion terminal (435) at the lower end of the external thread rod (434), an upper stop plate (436) at the upper end of the external thread rod (434) located at the upper rotating hole (45), an internal thread tube (437) that is slidably provided on the inner wall of the threaded tube insertion hole (417) and screwed to the external thread rod (434), and an anti-rotation key hole (438) formed on the outer wall of the internal thread tube (437) and inserted into the anti-rotation key (418).

5. A protective device for patch antennas according to claim 4, characterized in that: The lower end of the outer wall of the follower cylinder (421) is provided with a receiving annular groove (426) for accommodating a torsion spring (425).

6. A protective device for patch antennas according to claim 5, characterized in that: The patch antenna (9) includes at least a radiating patch (91), a dielectric substrate (92), and a base plate (93). A coaxial cable socket (94) is provided below the base plate (93). The coaxial cable socket (94) is used to connect a coaxial cable plug (95) and a coaxial cable (96).

7. A protective device for patch antennas according to claim 6, characterized in that: The fixed lock head (13) is a right-angled triangular block with its hypotenuse tilted from left rear to right front.

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