Four-frequency vehicle-mounted signal amplifier

Abstract

The four-frequency vehicle-mounted signal amplifier comprises a shell, a base and a circuit board, an inner cavity is formed in the shell, a placing block is integrally formed on the lower edge of the outer wall of the corresponding side of the shell, a plurality of inwards-concave mounting grooves are formed in the outer walls of the left side and the right side of the shell, and the mounting grooves are arranged in the inner cavity. A fixing mechanism is fixedly connected to the interior of the mounting groove, the circuit board is arranged in the inner cavity, the base comprises a bottom plate, and the two sides of the bottom plate are fixedly connected with a fixed side plate and movably connected with a movable side plate correspondingly; the outer walls of the corresponding sides of the fixed side plate and the movable side plate are fixedly connected with a plurality of limiting blocks matched with the fixing mechanism, and the fixed side plate and the movable side plate are fixedly connected with the shell through matching of the limiting blocks and the fixing mechanism. According to the utility model, the problems that the signal amplifier is fixedly connected or is fixedly connected through a bolt, and when an internal circuit board of the signal amplifier needs to be overhauled, the signal amplifier needs to be disassembled by adopting an adaptive screw, so that time and labor are wasted are solved.

Description

Technical Field

[0001] This utility model belongs to the field of signal amplifier technology, and in particular relates to a four-frequency vehicle-mounted signal amplifier. Background Technology

[0002] For example, Chinese patent application number 202022246046.5 discloses a vehicle-mounted multi-antenna mobile communication signal amplifier. A detachable connection structure and an elastic stabilizing structure are assembled between the left and right sides of the mounting base and the fixing plate. A protective shell is fixedly mounted on the center of the bottom surface of the fixing plate. The top surface of the inner cavity of the protective shell has a multi-antenna signal amplifier body welded on it, and a heat dissipation structure is mounted on the protective shell. The detachable connection structure connects and fixes the mounting base and the fixing plate. Disassembly is only required by rotating the snap-fit ​​plate out of the slot, making it convenient to use. The elastic stabilizing structure works in conjunction with the detachable connection structure, utilizing the elasticity of the curved metal plate to firmly press against the top surface of the snap-fit ​​plate, ensuring the snap-fit ​​plate abuts against the inside of the slot and preventing movement within the slot. This effectively prevents loosening of the mounting point after long-term use. The heat dissipation structure is located on the protective shell, utilizing both air cooling and the thermal conductivity of the aluminum alloy shell to improve heat dissipation.

[0003] However, existing technologies have some problems: the signal amplifiers mentioned above are fixedly connected or fixed by bolts. When it is necessary to repair the internal circuit board of the signal amplifier, it is necessary to use appropriate screws for disassembly, which is time-consuming and laborious. Therefore, we propose a four-frequency vehicle signal amplifier. Utility Model Content

[0004] To address the problems existing in the above-mentioned technologies, this utility model provides a four-frequency vehicle signal amplifier, which solves the problem that the signal amplifier itself is fixedly connected, or fixed by bolts, and when it is necessary to repair the internal circuit board of the signal amplifier, it is necessary to use appropriate screws for disassembly, which is time-consuming and laborious.

[0005] This utility model is implemented as follows: a four-frequency vehicle signal amplifier includes a housing and a base, and a circuit board installed inside the housing. The housing has an inner cavity, and a placement block is integrally formed on the lower edge of the corresponding outer wall of the housing. The left and right outer walls of the housing are provided with multiple inwardly recessed mounting grooves, and a fixing mechanism is fixedly connected inside the mounting grooves. The circuit board is disposed inside the inner cavity and located at the upper end of the placement block. The base includes a base plate, and a fixed side plate and a movable side plate are fixedly connected to both sides of the base plate, respectively. Multiple limiting blocks that cooperate with the fixing mechanism are fixedly connected to the outer walls of the corresponding sides of the fixed and movable side plates. The fixed side plate and the movable side plate are fixedly connected to the housing through the cooperation of the limiting blocks and the fixing mechanism.

[0006] As a preferred embodiment of this utility model, the upper end of the placement block is integrally formed with a slider, and the slider and the placement block are arranged in a convex shape.

[0007] As a preferred embodiment of this utility model, the lower end of the circuit board is symmetrically provided with sliding grooves, and the circuit board is connected to the inside of the cavity by the sliding grooves and the protrusions.

[0008] As a preferred embodiment of the present invention, the fixing mechanism includes a fixing block fixedly connected to the inner wall of the mounting groove, a sleeve connected to the outer wall of the fixing block, U-shaped openings symmetrically opened on the outer wall of the sleeve, a second spring fixedly connected to the inner wall of the sleeve, a locking block integrally formed on the outer edge of the end of the sleeve away from the fixing block, and a 45-degree angled inclined surface provided at the connection between the locking block and the sleeve.

[0009] As a preferred embodiment of this utility model, the outer wall of the fixed side plate and the movable side plate are respectively fixedly connected with a plurality of limiting blocks and two connecting blocks. The lower end of the connecting block is provided with an inwardly recessed groove, and the connecting block is connected to the outer wall of the protrusion through the groove.

[0010] In a preferred embodiment of this utility model, the limiting block is located at the upper end of the connecting block. One end of the limiting block connected to the fixed side plate and the movable side plate is provided with an inwardly recessed limiting groove. The other end of the limiting block away from the fixed side plate and the movable side plate is provided with an inwardly recessed guide groove. The guide groove is arranged in a conical shape. The inner wall of the limiting block is provided with a through hole. The through hole is located between the limiting groove and the guide groove, and both ends of the through hole are interconnected with the guide groove and the limiting groove, respectively.

[0011] In a preferred embodiment of this utility model, the outer wall of the base plate near the movable side plate is provided with a plurality of inwardly recessed stretching holes, and the inner wall of the base plate is provided with a plurality of buffer holes. The buffer holes are located in the middle of the stretching holes and are interconnected. The diameter of the buffer holes is larger than the diameter of the stretching holes. A stretching shaft is provided inside the stretching holes. A buffer block is fixedly connected to the stretching shaft on the outer wall of the buffer hole. The buffer block extends into the buffer hole. A first spring is provided inside the buffer hole. The first spring is sleeved on the outer wall of the stretching shaft. The two ends of the first spring are respectively connected to the outer wall of the buffer block and the inner wall of the buffer hole. The side of the stretching shaft extending out of the stretching hole is fixedly connected to the movable side plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model uses a circuit board installed inside the inner cavity of the outer shell. The movable side plate is moved away from the base plate to facilitate the connection between the fixed side plate and the outer shell. Then the movable side plate is reset and contacts the outer shell. It is connected to the fixing mechanism through the limiting block to facilitate the fixed installation between the base and the outer shell. The signal amplifier adopts an assembly structure, which is easy to disassemble and install, and facilitates the inspection or replacement of the circuit board. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram provided by an embodiment of the present utility model;

[0015] Figure 2 This is a three-dimensional schematic diagram of the circuit board provided in an embodiment of this utility model;

[0016] Figure 3 This is a three-dimensional schematic diagram of the outer shell provided in an embodiment of the present utility model;

[0017] Figure 4 This is provided by the embodiment of the present utility model. Figure 3 Enlarged diagram of area a in the middle;

[0018] Figure 5 This is a side view schematic diagram of the fixing mechanism provided in an embodiment of the present utility model;

[0019] Figure 6 This is a three-dimensional schematic diagram of the base provided in an embodiment of the present utility model;

[0020] Figure 7 This is a cross-sectional schematic diagram of the base plate provided in an embodiment of this utility model;

[0021] Figure 8 This is a three-dimensional schematic diagram of the limiting block provided in an embodiment of this utility model;

[0022] Figure 9 This is a side view of the limiting block provided in an embodiment of the present utility model;

[0023] Figure 10 This is a schematic diagram of the circuit board provided in an embodiment of the present utility model;

[0024] Figure 11 This is an exploded view schematic diagram provided in an embodiment of this utility model.

[0025] In the diagram: 1. Outer shell; 12. Inner cavity; 13. Placement block; 14. Mounting groove; 131. Slider; 2. Base; 21. Limiting block; 22. Connecting block; 23. Movable side plate; 24. Fixed side plate; 25. Base plate; 211. Guide groove; 212. Through hole; 213. Limiting groove; 221. Groove; 251. Buffer hole; 252. Tension shaft; 253. First spring; 254. Buffer block; 255. Tension hole; 3. Circuit board; 31. Slide groove; 4. Fixing mechanism; 41. Sleeve; 42. Locking block; 43. Opening; 44. Second spring; 45. Fixing block. Detailed Implementation

[0026] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0027] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0028] Example 1:

[0029] like Figures 1 to 2 As shown in the figure, this utility model provides a four-frequency vehicle signal amplifier, including a housing 1 and a base 2, and a circuit board 3 installed inside the housing 1. The housing 1 has an inner cavity 12. A placement block 13 is integrally formed on the lower edge of the corresponding outer wall of the housing 1. The left and right outer walls of the housing 1 are provided with multiple inwardly recessed mounting grooves 14. A fixing mechanism 4 is fixedly connected inside the mounting grooves 14. The circuit board 3 is disposed inside the inner cavity 12 and is located above the placement block 13. The base 2 includes a base plate 25. Fixed side plates 24 and movable side plates 23 are fixedly connected to both sides of the base plate 25, respectively. 4. Each outer wall corresponding to the movable side plate 23 is fixedly connected with a plurality of limiting blocks 21 that cooperate with the fixing mechanism 4. The fixed side plate 24 and the movable side plate 23 are fixedly connected to the outer shell 1 through the limiting blocks 21 and the fixing mechanism 4. The circuit board 3 is installed inside the inner cavity 12 of the outer shell 1. When the movable side plate 23 is moved away from the bottom plate 25, it is easy for the fixed side plate 24 to connect with the outer shell 1. Then the movable side plate 23 is reset and contacts the outer shell 1. It is connected to the fixing mechanism 4 through the limiting blocks 21, which is convenient for the fixed installation between the base 2 and the outer shell 1. The signal amplifier adopts an assembly structure, which is easy to disassemble and install, and facilitates the maintenance or replacement of the circuit board 3.

[0030] like Figure 3 As shown, the upper end of the placement block 13 is integrally formed with a slider 131, and the slider 131 and the placement block 13 are arranged in a convex shape; this facilitates the circuit board 3, the fixed side plate 24 and the movable side plate 23 to be limited and connected inside the outer shell 1.

[0031] like Figure 2 As shown, the lower end of the circuit board 3 is symmetrically provided with a sliding groove 31. The circuit board 3 is connected to the inner cavity 12 through the sliding groove 31 and the protrusion for limiting connection. The circuit board 3 is connected to the protrusion through the groove 221, which facilitates the sliding connection of the circuit board 3 to the upper end of the placement block 13.

[0032] like Figures 4 to 5As shown, the fixing mechanism 4 includes a fixing block 45 fixedly connected to the inner wall of the mounting groove 14. A sleeve 41 is connected to the outer wall of the fixing block 45. The outer wall of the sleeve 41 has symmetrically arranged U-shaped openings 43. A second spring 44 is fixedly connected to the inner wall of the sleeve 41. A locking block 42 is integrally formed on the outer edge of the end of the sleeve 41 away from the fixing block 45. The connection between the locking block 42 and the sleeve 41 has a slope arranged at a 45-degree angle. The opening 43 facilitates the movement of the sleeve 41 inward when the locking block 42 is pressed by force. The movement of the sleeve compresses the second spring 44, thereby facilitating the connection with the limiting block 21. The slope at the connection between the locking block 42 and the sleeve 41 facilitates the disassembly of the fixed side plate 24 and the movable side plate 23.

[0033] like Figure 6 As shown, the outer wall of the fixed side plate 24 and the movable side plate 23 are respectively fixedly connected with a plurality of limiting blocks 21 and two connecting blocks 22. The lower end of the connecting block 22 is provided with an inwardly recessed groove 221. The connecting block 22 is connected to the outer wall of the protrusion through the groove 221. The groove 221 connects the connecting block to the protrusion, which facilitates the connecting block 22 to extend into the inner cavity 12 and contact the circuit board 3 to limit the movement of the circuit board 3.

[0034] like Figures 8 to 9 As shown, the limiting block 21 is located at the upper end of the connecting block 22. One end of the limiting block 21 connected to the fixed side plate 24 and the movable side plate 23 has an inwardly recessed limiting groove 213. The end of the fixed block 45 away from the fixed side plate 24 and the movable side plate 23 has an inwardly recessed guide groove 211. The guide groove 211 is conical in shape. The inner wall of the limiting block 21 has a through hole 212 located between the limiting groove 213 and the guide groove 211, and both ends of the through hole 212 communicate with the guide groove 211 and the limiting groove 213, respectively. When the fixed side plate 24 and the movable side plate 23 are close to the outer shell 1, the limiting block 21... 1. The sleeve extends into the mounting groove 14 and into the guide groove 211. The guide groove 211 facilitates the guidance of the sleeve 41. The sleeve extends into the through hole 212, so that the locking block 42 contacts the inner wall of the through hole 212. Under the action of the squeezing force, the locking block 42 drives the sleeve 41. The U-shaped opening 43 of the sleeve hole makes the sleeve 41 set as two tubes. The two tubes move inward and compress the second spring 44 during the movement. When the locking block 42 moves into the limiting groove 213, the second spring 44 rebounds without the action of squeezing force, driving the two tubes into the limiting groove 213 for limiting and fixing.

[0035] like Figure 7As shown, the outer wall of the base plate 25 near the movable side plate 23 has multiple inwardly recessed tension holes 255. The inner wall of the base plate 25 has multiple buffer holes 251. The buffer holes 251 are located in the middle of the tension holes 255 and are interconnected. The diameter of the buffer holes 251 is larger than the diameter of the tension holes 255. A tension shaft 252 is provided inside the tension hole 255. A buffer block 254 is fixedly connected to the tension shaft 252 on the outer wall of the buffer hole 251. The buffer block 254 extends into the buffer hole 251. A first spring 253 is provided inside the buffer hole 251. The first spring 253 is sleeved on the tension hole 251. On the outer wall of shaft 252, the two ends of the first spring 253 are respectively connected to the outer wall of buffer block 254 and the inner wall of buffer hole 251. The side of the tension shaft 252 extending out of the tension hole 255 is fixedly connected to the movable side plate 23. By pulling the movable side plate 23, the movable side plate 23 drives the tension shaft 252 to move inside the tension hole 255. The tension shaft 252 drives the buffer block 254 to move inside the buffer groove, compressing the first spring 253, so that the movable side plate 23 can move away from the bottom plate 25, and so that the fixed side plate 24 can be fixedly installed with the outer shell 1. Loosening the movable side plate 23 will reset the movable side plate 23, so that it can be fixedly installed with the outer shell 1.

[0036] like Figure 10 As shown, an ALC circuit module and an AGC circuit module are fixedly connected to the outer wall of the circuit board 3. A self-excitation elimination module is fixedly connected to the outer wall of the circuit board 3 to eliminate self-excitation oscillation. An overload protector is fixedly connected to the outer wall of the circuit board 3 to prevent the circuit from tripping automatically when it is overloaded, thus protecting the circuit. A balance bridge module is also fixedly connected to the outer wall of the circuit board 3 to balance the resistance.

[0037] Working principle of Example 1:

[0038] In use, first install the circuit board 3 inside the inner cavity 12, then pull the movable side plate 23. The movable side plate 23 drives the tension shaft 252 to move inside the tension hole 255. The tension shaft 252 drives the buffer block 254 to move inside the buffer groove, compressing the first spring 253, so that the movable side plate 23 can move away from the bottom plate 25, making it easier to fix the fixed side plate 24 to the outer shell 1. Loosen the movable side plate 23, and the movable side plate 23 will return to its original position, making it easier to fix to the outer shell 1. When the fixed side plate 24 and the movable side plate 23 are close to the outer shell 1, the fixing block 45 extends into the mounting groove 14, and the sleeve extends into... Inside the guide groove 211, the sleeve 41 is guided to extend into the through hole 212, so that the locking block 42 contacts the inner wall of the through hole 212. Under the action of the squeezing force, the locking block 42 moves the sleeve 41. The U-shaped opening 43 of the sleeve hole makes the sleeve 41 set as two tubes, so that the two tubes move inward. When moving, the second spring 44 is compressed. When the locking block 42 moves into the limiting groove 213, the second spring 44 rebounds without the action of squeezing force, and drives the two tubes to extend into the limiting groove 213 for limiting and fixing.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A four-band vehicle-mounted signal amplifier, comprising a housing (1) and a base (2), and a circuit board (3) mounted inside the housing (1), characterized in that: The outer shell (1) has an inner cavity (12) inside. A placement block (13) is integrally formed on the lower edge of the corresponding outer wall of the outer shell (1). The outer walls on both the left and right sides of the outer shell (1) are provided with multiple inwardly recessed mounting grooves (14). A fixing mechanism (4) is fixedly connected inside the mounting groove (14). The circuit board (3) is set inside the inner cavity (12) and located at the upper end of the placement block (13). The base (2) includes a base plate (25). A fixed side plate (24) and a movable side plate (23) are fixedly connected to both sides of the base plate (25). Multiple limiting blocks (21) that cooperate with the fixing mechanism (4) are fixedly connected to the outer wall of the corresponding side of the fixed side plate (24) and the movable side plate (23). The fixed side plate (24) and the movable side plate (23) are fixedly connected to the outer shell (1) through the cooperation of the limiting blocks (21) and the fixing mechanism (4).

2. The four-band vehicle signal amplifier as described in claim 1, characterized in that: The upper end of the placement block (13) is integrally formed with a slider (131), and the slider (131) and the placement block (13) are arranged in a convex shape.

3. The four-band vehicle signal amplifier as described in claim 1, characterized in that: The circuit board (3) is symmetrically provided with a sliding groove (31) at the lower end. The circuit board (3) is connected to the inside of the inner cavity (12) through the sliding groove (31) and the protrusion for limiting.

4. A four-band vehicle-mounted signal amplifier as described in claim 1, characterized in that: The fixing mechanism (4) includes a fixing block (45) fixedly connected to the inner wall of the mounting groove (14). A sleeve (41) is connected to the outer wall of the fixing block (45). The outer wall of the sleeve (41) is symmetrically provided with U-shaped openings (43). A second spring (44) is fixedly connected to the inner wall of the sleeve (41). A locking block (42) is integrally formed on the outer edge of the end of the sleeve (41) away from the fixing block (45). The connection between the locking block (42) and the sleeve (41) is provided with an inclined surface arranged at a 45-degree angle.

5. A four-band vehicle-mounted signal amplifier as described in claim 1, characterized in that: The fixed side plate (24) and the movable side plate (23) are respectively fixedly connected to a number of limiting blocks (21) and two connecting blocks (22) on the outer wall of the side corresponding to each other. The lower end of the connecting block (22) is provided with an inwardly recessed groove (221). The connecting block (22) is connected to the outer wall of the protrusion through the groove (221).

6. A four-band vehicle signal amplifier as described in claim 5, characterized in that: The limiting block (21) is located at the upper end of the connecting block (22). The end of the limiting block (21) connected to the fixed side plate (24) and the movable side plate (23) is provided with an inwardly recessed limiting groove (213). The end of the limiting block (21) away from the fixed side plate (24) and the movable side plate (23) is provided with an inwardly recessed guide groove (211). The guide groove (211) is arranged in a conical shape. The inner wall of the limiting block (21) is provided with a through hole (212). The through hole (212) is located between the limiting groove (213) and the guide groove (211), and the two ends of the through hole (212) are interconnected with the guide groove (211) and the limiting groove (213) respectively.

7. A four-band vehicle signal amplifier as described in claim 1, characterized in that: The base plate (25) has multiple inwardly recessed stretching holes (255) on its outer wall near the movable side plate (23). The inner wall of the base plate (25) has multiple buffer holes (251). The buffer holes (251) are located in the middle of the stretching holes (255) and are interconnected. The diameter of the buffer holes (251) is larger than the diameter of the stretching holes (255). A stretching shaft (252) is provided inside the stretching holes (255). The stretching shaft (252) is located on the outer wall of the buffer holes (251). A buffer block (254) is fixedly connected to the buffer hole (251). The buffer block (254) extends into the buffer hole (251). A first spring (253) is provided inside the buffer hole (251). The first spring (253) is sleeved on the outer wall of the tension shaft (252). The two ends of the first spring (253) are respectively connected to the outer wall of the buffer block (254) and the inner wall of the buffer hole (251). The side of the tension shaft (252) extending out of the tension hole (255) is fixedly connected to the movable side plate (23).

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