Built-in GPS ceramic antenna

Abstract

The utility model provides a built-in GPS ceramic antenna, and relates to the technical field of ceramic antennas. The antenna module comprises a circuit substrate and a ceramic GPS positioning module installed on the circuit substrate, a shielding cover is arranged on the lower surface of the circuit substrate, a shell is arranged outside the antenna module formed by the circuit substrate, the ceramic GPS positioning module and the shielding cover, the shell comprises a base, a group of protruding positioning columns with internal threads are fixed on the base, and the positioning columns are fixed on the base. Flanges protruding out of the ceramic GPS positioning module and the shielding cover are arranged on the periphery of the circuit substrate; a group of bolts penetrate through the flanges on the circuit substrate and are screwed with the positioning columns below the bolts; a wire penetrating out of the shielding case is connected to the base of the circuit substrate, an upper cover covering the antenna module is connected to the base, a wire penetrating hole is formed in the lower bottom of the base, and the wire penetrates out of the wire penetrating hole. A gap is reserved between the antenna module and the shell; and heat dissipation holes are formed in the base. According to the utility model, a certain gap is reserved between the antenna module and the shell, so that direct impact of external force can be avoided.

Description

Technical Field

[0001] The utility model discloses a built-in GPS ceramic antenna, which relates to the technical field of ceramic antennas. Background Art

[0002] Existing ceramic antennas generally use a ceramic shell to protect the GPS chip, making it anti-interference, anti-lightning, waterproof and dustproof. However, the antenna itself is made of ceramic material, which has poor protection effect and is easily broken and damaged when subjected to external force, affecting the use of GPS ceramic antennas. The broken and detached ceramic fragments are dangerous and may cause accidental injury to processing personnel during maintenance. Utility Model Content

[0003] The purpose of this utility model is to design a built-in GPS ceramic antenna that can solve the problem of poor protection effect of ceramic antennas.

[0004] The utility model includes a circuit substrate and a ceramic GPS positioning module mounted on the circuit substrate. A shielding cover is provided on the lower surface of the circuit substrate. An antenna module, which is composed of the circuit substrate, the ceramic GPS positioning module, and the shielding cover, is provided with a housing. The housing includes a base, to which a set of protruding positioning posts with internal threads are fixed. The circuit substrate has a flange protruding from the ceramic GPS positioning module and the shielding cover. A set of bolts pass through the flange of the circuit substrate and are screwed together with the positioning posts below. An upper cover is connected to the base, which covers the antenna module. A wire through-hole is provided at the bottom of the base, through which the wire is passed. A gap is left between the antenna module and the housing. The base is provided with heat dissipation holes. The gap between the housing and the antenna module protects the antenna module from direct impact.

[0005] Furthermore, the wire through-hole at the bottom of the base is a tubular structure with external threads. A mounting rod is connected to the wire through-hole. The mounting rod has an external flange at its upper end or portion. The lower end surface of the wire through-hole is positioned opposite the external flange of the mounting rod. A nut is screwed onto the outer surface of the mounting rod and is screwed to the outer surface of the wire through-hole. A sealing ring is provided between the upper end of the nut and the lower surface of the base to cooperate with both. In the present invention, the sealing ring can be a tubular structure to accommodate the spacing between the nut and the base.

[0006] Furthermore, the mounting rod is provided with an inner protruding ring, into which a flexible plug with a perforation is mounted. The periphery of the flexible plug engages with the inner surface of the mounting rod, and its upper surface is a plane formed at an angle to the axis of the mounting rod. A slag removal port is provided on the mounting rod at the lower end of the upper surface of the flexible plug, and a blocking block is provided on the slag removal port. The wire passes through the perforation of the flexible plug to the lower portion of the mounting rod and tightly engages with the flexible plug. In the present invention, the inner protruding ring of the mounting rod can be set in an inclined state, and a flexible plug with parallel upper and lower surfaces and an inclined angle consistent with that of the inner protruding ring is used.

[0007] Furthermore, the lower surface of the base is trumpet-shaped, which has good strength against side impacts.

[0008] Furthermore, each heat dissipation hole is an inclined hole with its upper end facing the center and its lower end facing outward.

[0009] The antenna module of this invention maintains a certain gap between itself and the housing to prevent direct impact from external forces. The upper cover of the housing adopts a spherical design, while the lower base adopts a trumpet-shaped design, providing high strength and dispersing external impact, thereby enhancing protection for the antenna module. A vibration-damping pad is provided at the contact point between the circuit substrate and the positioning post, providing vibration-damping protection for the antenna module when the device is subjected to external impact. Heat dissipation holes are provided on the lower surface of the base to ensure air circulation within the base and enhance heat dissipation for the antenna module.

[0010] The utility model is provided with a slag cleaning port. When the ceramic shell is broken and needs to be replaced, the maintenance personnel can shake the device to make the ceramic fragments slide along the base to the slag cleaning port, and the ceramic fragments can be centrally processed, avoiding harm to the maintenance personnel and improving the efficiency of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front full cross-sectional view of an embodiment of the utility model;

[0012] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0013] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0014] Figure 4 for Figure 1 A partial enlarged view of point C in the middle;

[0015] Figure 5 for Figure 1 Bottom view of

[0016] Figure 6 for Figure 1 Top view of the ceramic GPS positioning module;

[0017] Figure 7 for Figure 6 Left view of;

[0018] Figure 8 for Figure 7 A partial enlarged view of point D in the middle;

[0019] Among them: 1. Ceramic GPS positioning module, 2. Circuit board, 3. Shielding cover, 4. Wire, 5. Fixing bracket, 6. Base, 7. Upper cover, 8. Positioning column, 9. Bolt, 10. Vibration damping pad, 11. Rubber pad, 12. Limiting bracket, 13. Heat dissipation hole, 14. Mounting rod, 15. Nut, 16. Sealing ring, 17. Elastic pad, 18. Inner protruding ring, 19. Flexible plug, 20. Slag cleaning port, 21. Blocking block, 22. Connector. DETAILED DESCRIPTION

[0020] by Figure 1 The front, back, left, right, up and down directions of this embodiment are defined as shown.

[0021] As shown in the figure, this embodiment includes a ceramic GPS positioning module 1, the lower surface of which is fixed to a circuit substrate 2 by welding. A shielding cover 3 is welded to the lower surface of the circuit substrate 2. A wire 4 is disposed within the shielding cover 3. The upper end of the wire 4 is welded to the lower surface of the circuit substrate 2 and extends from the left end of the shielding cover 3. A fixing bracket 5 is provided on the left side of the shielding cover 3. The fixing bracket 5 is in the shape of a "J" and its upper end is screwed to the lower surface of the circuit substrate 2. It is used to clamp the wire 4 and prevent the wire 4 from being pulled by external forces and loosening the weld. A rubber pad 11 is provided at the contact point between the fixing bracket 5 and the wire 4 to prevent friction damage to the wire 4 caused by the fixing bracket 5.

[0022] In this embodiment, the antenna module comprises a ceramic GPS positioning module 1, a circuit board 2, and a shielding cover 3. The antenna module is enclosed in a housing comprising a base 6. The base 6 has a flared lower surface, providing excellent resistance to lateral impacts and guiding impurities falling from above. A set of positioning posts 8 are located on the inner wall of the base 6. In this embodiment, four positioning posts 8 are provided. Each positioning post 8 is welded to the inner wall of the base 6 at its lower end; its upper portion is protruding and has internal threads. The circuit board 2 is surrounded by a flange that protrudes beyond the ceramic GPS positioning module 1 and the shielding cover 3. Through-holes are provided at each corner of the flange, the dimensions of which match those of the internal threads of the positioning posts 8. Bolts 9 are installed in each through-hole, which passes through the flange of the circuit board 2 and screws onto the positioning posts 8 below. Vibration-damping pads 10 are located on the upper and lower sides of each through-hole to provide vibration protection for the antenna module against external impacts. The lower surface of the base 6 is provided with a group of heat dissipation holes 13, which are evenly distributed in a circular shape. Each heat dissipation hole 13 is in the shape of an inclined hole, with the upper end facing the center of the base 6 and the lower end facing the outside of the base. This ensures air circulation inside the base 6 while also preventing external impurities from entering the base 6. A limit frame 12 is provided within the base 6. The limit frame 12 is fixed to the inner wall of the base 6 by welding and has an inclined hole on the upper portion for supporting the wire 4 and acting as a limiter. The lower bottom of the base 6 is provided with a wire perforation. The wire perforation is a tubular structure with external threads, through which the wire 4 extends downward. A top cover 7 is provided above the base 6. The top cover 7 is hemispherical and is located outside the antenna module. It is screwed to the base 6 via threads and can disperse external impacts during use, thereby improving the protection of the antenna module. A gap is left between the antenna module and the outer shell to prevent the antenna module from being directly impacted, thereby improving the protection of the ceramic shell of the ceramic GPS positioning module 1.

[0023] A mounting rod 14 is provided below the base 6. The mounting rod 14 is a cylindrical tube structure, with its upper end inserted into the wire through-hole of the base 6. An outer flange is provided on the upper portion of the mounting rod 14, and the lower end surface of the wire through-hole matches the position and size of the outer flange of the mounting rod 14. A nut 15 is provided on the outer periphery of the mounting rod 14. The nut 15 is fitted onto the outside of the mounting rod 14 and screwed onto the external thread of the wire through-hole of the base 6, thereby fixing the base 6 to the mounting rod 14. A sealing ring 16 is provided between the lower surface of the base 6 and the upper end of the nut 15 to prevent impurities from entering the thread connecting the nut 15 and the wire through-hole. In this embodiment, the sealing ring 16 can be designed with a tubular structure to accommodate the distance between the upper end of the nut 15 and the lower surface of the base 6. An elastic pad 17 is provided at the contact position between the lower end of the base 6 and the outer flange of the mounting rod 14. After the nut 15 is screwed on, the elastic pad 17 is compressed to generate an opposing force, thereby increasing the tightness of the connection between the nut 15 and the base 6.

[0024] An inner protruding ring 18 is provided within the mounting rod 14, and a flexible plug 19 is mounted above the inner protruding ring 18 by bonding. A perforation is provided in the middle of the flexible plug 19, and the outer periphery is tightly fitted with the inner wall of the mounting rod 14. The wire 4 extends downward from the mounting rod 14 through the perforation, and the wire 4 is tightly fitted with the perforation of the flexible plug 19. In this embodiment, the upper surface of the flexible plug 19 is an inclined surface, forming a 60-degree angle with the axis of the mounting rod 14. A slag cleaning port 20 is provided on the side of the mounting rod 14 located at the lower end of the upper surface of the flexible plug 19. The slag cleaning port 20 has the same slope as the upper surface of the flexible plug 19. When the ceramic shell of the ceramic GPS positioning module 1 is broken and needs to be replaced, maintenance personnel can shake the device to cause the ceramic fragments to slide along the base to the slag cleaning port, thereby preventing the ceramic fragments from causing injury to the maintenance personnel when replacing the ceramic GPS positioning module 1. A blocking block 21 is provided in the slag cleaning port 20. The blocking block 21 is installed in the slag cleaning port 20 through an interference fit, which can block the slag cleaning port 20 and facilitate centralized processing of ceramic fragments. A connector 22 is provided at the end of the wire 4 for connecting other components.

[0025] In this embodiment, the inner protruding ring 18 of the mounting rod 14 can be set to an inclined state, and a flexible plug 19 with parallel upper and lower surfaces and an inclined angle consistent with the inner protruding ring 18 is used. This design can save material for the flexible plug 19, but the processing difficulty is higher.

[0026] During assembly of this embodiment, the ceramic GPS positioning module 1 is first soldered to the top surface of the circuit substrate 2. Then, the wires 4 are soldered to the bottom surface of the circuit substrate 2. After this, the shielding cover 3 is soldered to the bottom surface of the circuit substrate 2. A fixing bracket 5 is screwed onto the left side of the shielding cover 3 to secure the wires 4 in place. Vibration-damping pads 10 are then placed in the through-holes at the four corners of the flange of the circuit substrate 2. The circuit substrate 2 is then mounted above the positioning posts 8 using bolts 9. The wires 4 pass through the limiting brackets 12 and extend downward through the wire holes in the base 6. A flexible plug 19 is then bonded to the mounting rod 14. The wires 4 are then passed through the holes in the plug 19 and extended downward. After completion, screw the upper cover 7 on top of the base 6, sleeve the elastic pad 17 on the upper surface of the outer flange of the mounting rod 14, sleeve the sealing ring 16 on the lower part of the base 6, insert the mounting rod 14 into the wire through-hole at the lower end of the base 6, insert the nut 15 at the lower end of the mounting rod 14 and fix it to the lower end of the base 6 by screwing, and complete the assembly after connecting the connector 22 at the lower end of the wire 4.

Claims

1. A ceramic antenna with a built-in GPS, comprising a circuit substrate and a ceramic GPS positioning module mounted on the circuit substrate, a shielding cover provided on the lower surface of the circuit substrate, and an outer housing provided on the outer surface of the antenna module, which comprises the circuit substrate, the ceramic GPS positioning module, and the shielding cover. The invention is characterized by: The shell includes a base, on which a group of protruding positioning columns with internal threads are fixed. The periphery of the circuit substrate has a flange protruding from the ceramic GPS positioning module and the shielding cover. A group of bolts pass through the flange on the circuit substrate and are screwed to the positioning columns below it; the base is connected to an upper cover covering the outside of the antenna module, and a wire through-hole is provided at the bottom of the base, through which the wire passes; a gap is left between the antenna module and the shell; and the base is provided with heat dissipation holes.

2. The built-in GPS ceramic antenna according to claim 1, characterized in that: The wire through-hole at the bottom of the base is a tubular structure with an external thread. A mounting rod is connected to the wire through-hole. The outer upper end or upper part of the mounting rod has an external flange. The lower end surface of the wire through-hole is opposite to the outer flange of the mounting rod. The nut sleeved on the outside of the mounting rod is screwed to the outer surface of the wire through-hole. A sealing ring is provided between the upper end of the nut and the lower surface of the base to cooperate with the two.

3. The built-in GPS ceramic antenna according to claim 1 or 2, characterized in that: An inner protruding ring is provided inside the mounting rod, in which a flexible plug with a perforation is installed. The periphery of the flexible plug cooperates with the inner surface of the mounting rod, and its upper surface is a plane that forms an angle with the axis of the mounting rod. A slag cleaning port is provided on the mounting rod at the lower end of the upper surface of the flexible plug, and a blocking block is provided on the slag cleaning port; the wire passes through the perforation of the flexible plug to the lower part of the mounting rod and fits tightly with the flexible plug.

4. The built-in GPS ceramic antenna according to claim 1 or 2, characterized in that: The lower surface of the base is trumpet-shaped.

5. The built-in GPS ceramic antenna according to claim 1 or 2, characterized in that: Each heat dissipation hole is an inclined hole with the upper end facing the center and the lower end facing outwards.

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