A cavity filter with a disassembly structure

Abstract

The utility model provides a cavity filter with a disassembly structure, including a filter body, a pressure cover and two interfaces, and the interfaces are fixedly connected to the opposite side of the filter body. The utility model relates to the technical field of cavity filters. This cavity filter with a disassembly structure, the utility model can, by setting a disassembly mechanism, when the filter body needs to be repaired, by pushing four push blocks upwards, and cooperating with the disassembly mechanism to make the positioning rod leave the inside of the positioning hole, at this time, the card block, the limit block and the pressure cover are no longer restricted, and can be moved upwards and removed, and then the inside of the filter body can be repaired. After the inspection is completed, the position of the card block and the card slot is aligned, and the pressure cover is installed on the top of the filter body, so that the card block enters the inside of the card slot, and the positioning rod enters the inside of the positioning hole again, completing the restriction of the card block, and then completing the fixation of the limit block and the pressure cover, so as to achieve the effect of facilitating the repair of the filter body.

Description

Technical Field

[0001] The utility model relates to the technical field of cavity filters, in particular to a cavity filter with a disassembly and assembly structure. Background Art

[0002] Cavity filters are widely used in the communication field as a frequency selection device, especially in the field of radio frequency communication. In the base station where the communication system completes signal transmission and reception, the filter is used to select the communication signal and filter out the clutter or interference signals outside the communication signal frequency.

[0003] Publication number "CN220492171U" provides a cavity filter with an efficient disassembly and assembly structure, including a fixing assembly, including a filter body, an auxiliary part, a seal, a fixing part and an indicator, wherein the auxiliary part is fixed to one side of the filter body, the seal is arranged at the top of the filter body, the fixing part is located at the top of the filter body, and the indicator is arranged at the top of the seal. The beneficial effects of the device are as follows: by arranging a seal to seal the filter body to prevent external dust from entering the filter body, and by arranging a sliding part to clamp the fixing part, the seal is fixed to the filter body, which solves the problem that the existing cavity filter needs to fix more fasteners during installation, so that the staff needs to spend a lot of time on disassembling and assembling the cavity filter when repairing the cavity filter, which affects the efficiency of the repair.

[0004] However, the above device still has the following problems during implementation:

[0005] The cavity filter needs to be regularly inspected and maintained after long-term use to ensure that the cavity filter can be used normally. The gland needs to be removed for maintenance. In the prior art, the gland and the cavity filter are fixed by multiple screw fasteners. The user needs to spend a lot of time to remove them before he can inspect the cavity filter, which affects the efficiency of maintenance. Utility Model Content

[0006] The purpose of the utility model is to provide a cavity filter with a disassembly structure to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A cavity filter with a disassembly and assembly structure comprises a filter body, a pressure cover and two interfaces, wherein the interfaces are fixedly connected to opposite sides of the filter body, the pressure cover is located at the top of the filter body, two limit blocks are fixedly connected to both sides of the pressure cover, a card block is fixedly connected to the bottom of the limit block, two shells are fixedly connected to both sides of the filter body, a card slot used in conjunction with the card block is provided on the top of the shell, a disassembly and assembly mechanism is provided inside the shell to enable the pressure cover to be disassembled, and a sealing mechanism is provided at the bottom of the pressure cover.

[0009] Preferably, the disassembly and assembly mechanism comprises a linkage block movably arranged inside the shell, transmission blocks are fixedly connected to both sides of the linkage block, a transmission slot is provided on the top of the transmission block, a transmission rod is provided inside the transmission slot, one end of the transmission rod is fixedly connected to a traction block, a moving block is fixedly connected to the top of the traction block, a positioning rod is fixedly connected to one side of the moving block, one end of the positioning rod passes through the inside of the card slot, and positioning holes used in conjunction with the positioning rod are provided on both sides of the card block;

[0010] The bottom of the linkage block is fixedly connected with a push rod, and the bottom of the push rod penetrates the bottom of the shell and is fixedly connected with the push block.

[0011] By setting up the disassembly and assembly mechanism, when the filter body needs to be inspected and repaired, the four pushing blocks can be pushed upwards to cooperate with the disassembly and assembly mechanism to make the positioning rod leave the inside of the positioning hole. At this time, the card block, the limit block and the pressure cover are no longer restricted and can be moved upwards for removal. Then the inside of the filter body can be inspected and repaired. After the inspection is completed, the position of the card block and the card slot is aligned, and the pressure cover is installed on the top of the filter body so that the card block enters the inside of the card slot. Then the pushing block is released, and the elastic force generated by the spring will push the moving block and the positioning rod to move to the side close to the card block, so that the positioning rod enters the inside of the positioning hole, completes the restriction of the card block, and then completes the fixation of the limit block and the pressure cover, thereby facilitating the disassembly of the pressure cover and facilitating the inspection and repair of the filter body.

[0012] Preferably, the sealing mechanism includes a sealing block fixedly connected to the bottom of the pressure cover, the surface of the sealing block is provided with a sealing ring, the number of the sealing rings is five, the top of the sealing ring is fixedly connected with a plurality of protrusions, and the bottom of the sealing ring is provided with a plurality of grooves opposite to the positions of the protrusions.

[0013] By setting up a sealing mechanism, after the pressure cover is installed, the sealing block will enter the interior of the filter body, and the sealing ring on the surface of the sealing block will be in close contact with the inner wall of the filter body to achieve a sealing effect. At the same time, the number of sealing rings is selected to be five. Even if one of them is damaged, it will not affect the sealing effect. The design of the protrusions and grooves on the sealing rings can ensure the stability of the connection between the sealing rings, thereby further improving the sealing effect.

[0014] Preferably, the sealing ring is made of silicone and its outer surface is in close contact with the inner wall of the filter body.

[0015] By setting the material of the sealing ring to silicone, the fit between the surface of the sealing ring and the inner wall of the filter body can be ensured, thereby improving the sealing effect.

[0016] Preferably, the diameter of the bump is 0.1 mm larger than the diameter of the groove.

[0017] By setting the diameter of the bump to be 0.1 mm larger than the diameter of the groove, the bump can enter the groove when squeezed. Since the sealing ring is made of silicone, the bump will not easily leave the groove, thereby improving the stability of the connection between the two sealing rings.

[0018] Preferably, a spring is fixedly connected to one side of the moving block, and one end of the spring is fixedly connected to the inner wall of the shell.

[0019] By arranging the spring, when the pushing block is released, the elastic force generated by the spring can push the moving block and the positioning rod to move to the side close to the clamping block, thereby playing a resetting role.

[0020] Preferably, two guide rods are fixedly connected to the inner wall of the shell, and a guide hole used in conjunction with the guide rods is provided on one side of the moving block.

[0021] By providing the guide rod and the guide hole, when the transmission groove squeezes the transmission rod, the structures such as the traction block and the moving block can be restricted from moving along the tracks of the guide rod and the guide hole, thereby playing the role of restricting the moving track.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] 1. The utility model is provided with a disassembly and assembly mechanism, so that when the filter body needs to be inspected and repaired, the four pushing blocks can be pushed upward to cooperate with the disassembly and assembly mechanism to make the positioning rod leave the inside of the positioning hole. At this time, the card block, the limit block and the pressure cover are no longer restricted, and they can be moved upward for removal, and then the inside of the filter body can be inspected and repaired. After the inspection is completed, the position of the card block and the card slot is aligned, and the pressure cover is installed on the top of the filter body so that the card block enters the inside of the card slot, and then the pushing block is released. The elastic force generated by the spring will push the moving block and the positioning rod to move to the side close to the card block, so that the positioning rod enters the inside of the positioning hole, completes the restriction of the card block, and then completes the fixation of the limit block and the pressure cover, so as to facilitate the disassembly of the pressure cover and the inspection and repair of the filter body.

[0024] 2. The utility model provides a sealing mechanism, so that after the pressure cover is installed, the sealing block can enter the interior of the filter body, and the sealing ring on the surface of the sealing block will be in close contact with the inner wall of the filter body to achieve a sealing effect. At the same time, the number of sealing rings is selected to be five, and even if one of them is damaged, it will not affect the sealing effect. The design of the protrusions and grooves on the sealing rings can ensure the stability of the connection between the sealing rings, further improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0026] Figure 2 It is a three-dimensional diagram of the main structure of the utility model;

[0027] Figure 3 For this utility model Figure 2 A partial enlarged view of the middle A;

[0028] Figure 4 It is a three-dimensional diagram of the sealing ring of the utility model;

[0029] Figure 5 It is a three-dimensional view of a cutaway view of the housing of the utility model;

[0030] Figure 6 It is a three-dimensional diagram of the disassembly and assembly mechanism of the utility model;

[0031] Figure 7 It is a three-dimensional diagram of the card block of the utility model.

[0032] In the figure: 1. filter body; 2. gland; 3. interface; 4. limit block; 5. clamping block; 6. housing; 7. clamping slot; 8. linkage block; 9. transmission block; 10. transmission slot; 11. transmission rod; 12. traction block; 13. moving block; 14. positioning rod; 15. positioning hole; 16. pushing rod; 17. pushing block; 18. sealing block; 19. sealing ring; 20. protrusion; 21. groove; 22. spring; 23. guide rod; 24. guide hole. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figure 1-Figure 7 , the utility model provides a technical solution:

[0035] Embodiment 1:

[0036] A cavity filter with a disassembly structure comprises a filter body 1, a pressure cover 2 and two interfaces 3, the interfaces 3 are fixedly connected to one side of the filter body 1, the pressure cover 2 is located at the top of the filter body 1, two limit blocks 4 are fixedly connected to both sides of the pressure cover 2, a card block 5 is fixedly connected to the bottom of the limit block 4, two shells 6 are fixedly connected to both sides of the filter body 1, a card slot 7 used in conjunction with the card block 5 is provided on the top of the shell 6, a disassembly mechanism is provided inside the shell 6, and the pressure cover 2 can be disassembled, and a sealing mechanism is provided at the bottom of the pressure cover 2.

[0037] One implementation of the first embodiment of the present invention is as follows: the disassembly and assembly mechanism comprises a linkage block 8 movably arranged inside the housing 6, transmission blocks 9 are fixedly connected to both sides of the linkage block 8, a transmission slot 10 is provided on the top of the transmission block 9, a transmission rod 11 is provided inside the transmission slot 10, one end of the transmission rod 11 is fixedly connected to a traction block 12, a moving block 13 is fixedly connected to the top of the traction block 12, a positioning rod 14 is fixedly connected to one side of the moving block 13, one end of the positioning rod 14 passes through the inside of the card slot 7, and positioning holes 15 used in conjunction with the positioning rod 14 are provided on both sides of the card block 5;

[0038] The bottom of the linkage block 8 is fixedly connected with a push rod 16 , and the bottom of the push rod 16 penetrates to the bottom of the housing 6 and is fixedly connected with a push block 17 .

[0039] In this embodiment, it is considered that the gland 2 and the filter body are fixed by a plurality of screw fasteners, and the user needs to spend a lot of time to dismantle them before the filter body can be repaired, which will affect the efficiency of the repair. Therefore, by setting a disassembly and assembly mechanism, when the filter body needs to be repaired, the four push blocks 17 can be pushed upward, and the push block 17 drives the push rod 16 and the linkage block 8 to move upward, and the linkage block 8 drives the transmission block 9 to move upward. When the transmission block 9 moves downward, the beveled edge of the inner wall of the transmission groove 10 squeezes the surface of the transmission rod 11, thereby driving the traction block 12 and the moving block 13 to move along the trajectory of the guide rod 23 and the guide groove to the side close to the spring 22, and the moving block 1 3 will drive the positioning rod 14 to leave the interior of the positioning hole 15. At this time, the block 5, the limit block 4 and the gland 2 are no longer restricted and can be moved upward for removal. Then the inside of the filter body can be inspected. After the inspection is completed, align the position of the block 5 and the slot 7, install the gland 2 on the top of the filter body, so that the block 5 enters the slot 7, and then release the push block 17. The elastic force generated by the spring 22 will push the moving block 13 and the positioning rod 14 to move to the side close to the block 5, so that the positioning rod 14 enters the interior of the positioning hole 15, complete the restriction of the block 5, and then complete the fixation of the limit block 4 and the gland 2, so as to facilitate the disassembly of the gland 2 and the inspection of the filter body.

[0040] Preferably, a spring 22 is fixedly connected to one side of the moving block 13 , and one end of the spring 22 is fixedly connected to the inner wall of the housing 6 .

[0041] In this embodiment, by providing the spring 22, when the pushing block 17 is released, the elastic force generated by the spring 22 can push the moving block 13 and the positioning rod 14 to move toward the side close to the clamping block 5, thereby playing a role of resetting.

[0042] Preferably, two guide rods 23 are fixedly connected to the inner wall of the housing 6 , and a guide hole 24 for use with the guide rods 23 is opened on one side of the moving block 13 .

[0043] In this embodiment, by providing the guide rod 23 and the guide hole 24, when the transmission groove 10 squeezes the transmission rod 11, the structures such as the traction block 12 and the moving block 13 are restricted from moving along the trajectory of the guide rod 23 and the guide hole 24, thereby playing the role of restricting the moving trajectory.

[0044] Embodiment 2:

[0045] On the basis of Example 1, the disassembly and assembly mechanism in this embodiment can facilitate the disassembly and installation of the gland 2, thereby improving the efficiency of maintenance. However, considering that the disassembly and assembly mechanism can achieve quick installation and disassembly, it cannot guarantee the sealing of the connection between the gland 2 and the filter body 1. The sealing mechanism in this application includes a sealing block 18 fixedly connected to the bottom of the gland 2, and a sealing ring 19 is sleeved on the surface of the sealing block 18. The number of sealing rings 19 is five, and a plurality of protrusions 20 are fixedly connected to the top of the sealing ring 19. The bottom of the sealing ring 19 is provided with a plurality of grooves 21 opposite to the position of the protrusions 20.

[0046] In this embodiment, the disassembly and assembly mechanism can achieve rapid installation and disassembly, but cannot ensure the sealing of the connection between the gland 2 and the filter body 1. Therefore, by setting a sealing mechanism, after the gland 2 is installed, the sealing block 18 can enter the interior of the filter body 1, and the sealing ring 19 on the surface of the sealing block 18 can be in close contact with the inner wall of the filter body 1 to achieve a sealing effect. At the same time, the number of sealing rings 19 is selected to be five, even if one is damaged, it will not affect the sealing effect, and the design of the protrusion 20 and the groove 21 on the sealing ring 19 can ensure the stability of the connection between the sealing rings 19, further improving the sealing effect;

[0047] The problem that the sealing performance of the connection between the pressure cover 2 and the filter body 1 cannot be guaranteed while the disassembly and assembly mechanism can achieve quick installation and disassembly is solved.

[0048] Preferably, the sealing ring 19 is made of silicone and its outer surface is in close contact with the inner wall of the filter body 1 .

[0049] In this embodiment, by setting the material of the sealing ring 19 to be silicone, the fit between the surface of the sealing ring 19 and the inner wall of the filter body 1 can be ensured, thereby improving the sealing effect.

[0050] Preferably, the diameter of the bump 20 is 0.1 mm larger than the diameter of the groove 21 .

[0051] In this embodiment, by setting the diameter of the protrusion 20 to be 0.1 mm larger than the diameter of the groove 21, the protrusion 20 can enter the groove 21 when squeezed. Since the sealing ring 19 is made of silicone, the protrusion 20 will not easily leave the groove 21, thereby improving the stability of the connection between the two sealing rings 19.

[0052] Working principle:

[0053] When the filter body needs to be repaired, the four pushing blocks 17 are pushed upward, and the pushing blocks 17 drive the pushing rod 16 and the linkage block 8 to move upward, and the linkage block 8 drives the transmission block 9 to move upward. When the transmission block 9 moves downward, the beveled edge of the inner wall of the transmission groove 10 squeezes the surface of the transmission rod 11, thereby driving the traction block 12 and the moving block 13 to move along the trajectory of the guide rod 23 and the guide groove to the side close to the spring 22, and the moving block 13 drives the positioning rod 14 to leave the inside of the positioning hole 15. At this time, the card block 5, the limit block 4 and the pressure cover 2 are no longer restricted, and it can be Move upward to remove, then you can inspect the inside of the filter body, after the inspection is completed, align the position of the block 5 and the slot 7, install the gland 2 on the top of the filter body, so that the block 5 enters the slot 7, then release the push block 17, the elastic force generated by the spring 22 will push the moving block 13 and the positioning rod 14 to move to the side close to the block 5, so that the positioning rod 14 enters the positioning hole 15, complete the restriction of the block 5, and then complete the fixation of the limit block 4 and the gland 2, so as to facilitate the disassembly of the gland 2 and the inspection of the filter body;

[0054] At the same time, after the pressure cover 2 is installed, the sealing block 18 will enter the interior of the filter body 1, and the sealing ring 19 on the surface of the sealing block 18 will be in close contact with the inner wall of the filter body 1 to achieve a sealing effect. At the same time, the number of sealing rings 19 is selected to be five. Even if one of them is damaged, it will not affect the sealing effect. The design of the protrusion 20 and the groove 21 on the sealing ring 19 can ensure the stability of the connection between the sealing rings 19, thereby further improving the sealing effect.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cavity filter with a disassembly structure, comprising a filter body (1), a gland (2) and two interfaces (3), wherein the interfaces (3) are fixedly connected to opposite sides of the filter body (1), and the gland (2) is located on the top of the filter body (1), characterized in that: Two limit blocks (4) are fixedly connected to both sides of the pressure cover (2), and a clamping block (5) is fixedly connected to the bottom of the limit block (4). Two shells (6) are fixedly connected to both sides of the filter body (1), and a clamping groove (7) for use with the clamping block (5) is provided on the top of the shell (6). A disassembly mechanism is provided inside the shell (6) so as to be able to disassemble the pressure cover (2), and a sealing mechanism is provided at the bottom of the pressure cover (2).

2. The cavity filter with a disassembly structure according to claim 1, characterized in that: The disassembly and assembly mechanism comprises a linkage block (8) movably arranged inside the housing (6), a transmission block (9) is fixedly connected to both sides of the linkage block (8), a transmission slot (10) is provided on the top of the transmission block (9), a transmission rod (11) is provided inside the transmission slot (10), one end of the transmission rod (11) is fixedly connected to a traction block (12), the top of the traction block (12) is fixedly connected to a moving block (13), one side of the moving block (13) is fixedly connected to a positioning rod (14), one end of the positioning rod (14) penetrates into the interior of the card slot (7), and both sides of the card block (5) are provided with positioning holes (15) used in conjunction with the positioning rod (14); The bottom of the linkage block (8) is fixedly connected to a push rod (16), and the bottom of the push rod (16) penetrates the bottom of the shell (6) and is fixedly connected to a push block (17).

3. The cavity filter with a disassembly structure according to claim 2, characterized in that: The sealing mechanism comprises a sealing block (18) fixedly connected to the bottom of the gland (2); a sealing ring (19) is sleeved on the surface of the sealing block (18); the number of the sealing rings (19) is five; a plurality of protrusions (20) are fixedly connected to the top of the sealing ring (19); and a plurality of grooves (21) are provided at the bottom of the sealing ring (19) and are opposite to the protrusions (20).

4. The cavity filter with a disassembly structure according to claim 3, characterized in that: The sealing ring (19) is made of silica gel, and its outer surface is in close contact with the inner wall of the filter body (1).

5. The cavity filter with a disassembly structure according to claim 3, characterized in that: The diameter of the protrusion (20) is 0.1 mm greater than the diameter of the groove (21).

6. The cavity filter with a disassembly structure according to claim 2, characterized in that: A spring (22) is fixedly connected to one side of the moving block (13), and one end of the spring (22) is fixedly connected to the inner wall of the housing (6).

7. The cavity filter with a disassembly structure according to claim 2, characterized in that: Two guide rods (23) are fixedly connected to the inner wall of the housing (6), and a guide hole (24) for use with the guide rods (23) is provided on one side of the moving block (13).

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