Intrusion plug filter

By designing a recessed plug filter and utilizing a combination of recessed groove and protective cover, the problem of the inner plug being susceptible to dust and moisture was solved, thus achieving stable operation and extended lifespan of the equipment.

CN224385472UActive Publication Date: 2026-06-19SHENZHEN LIZHENG TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN LIZHENG TECH CO LTD
Filing Date
2025-08-19
Publication Date
2026-06-19

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Abstract

This utility model discloses a recessed plug filter, comprising: a filter body, an inner plug, and a first protective cover; the bottom end of the filter body is provided with a first recessed groove; the inner plug is disposed in the first recessed groove; the first protective cover is detachably connected to the groove sidewall of the first recessed groove, and the first protective cover and the groove wall of the first recessed groove enclose a first protective cavity, which is used to accommodate the inner plug. The recessed plug filter of this utility model solves the problem in the prior art where the inner plug is easily affected by dust or moisture.
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Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a recessed plug filter. Background Technology

[0002] In existing technology, a filter is provided between the inner and outer plugs to filter out harmful electromagnetic noise in the current input from the outer plug to the inner plug, ensuring stable operation of the device connected to the inner plug and preventing interference with other electrical appliances. The inner plug is typically protruding, making it susceptible to dust or moisture in the environment, which can affect its pins. Utility Model Content

[0003] The purpose of this invention is to propose a recessed plug filter, which aims to solve the problem that the internal plug in the prior art is easily affected by dust or moisture.

[0004] To achieve one or more of the above objectives or other objectives, this utility model proposes a recessed plug filter, which includes: a filter body, an inner plug, and a first protective cover.

[0005] The bottom end of the filter body is provided with a first recessed groove;

[0006] The inner plug is disposed in the first recessed groove;

[0007] The first protective cover is detachably connected to the side wall of the first recessed groove, and the first protective cover and the groove wall of the first recessed groove form a first protective cavity, which is used to accommodate the inner plug.

[0008] Furthermore, the opening of the first protective cover is provided with a fixing soft plug; the side wall of the opening of the first recessed groove is provided with a fixing groove, and the fixing soft plug is detachably fitted and connected to the groove wall of the fixing groove.

[0009] Furthermore, the recessed plug filter also includes an external plug; the top of the filter body is provided with a second recessed groove, and the external plug is disposed in the second recessed groove.

[0010] Furthermore, the recessed plug filter also includes a second protective cover; the second protective cover is rotatably fixed to the top end of the filter body, and the second protective cover covers the second recessed groove to form a second protective cavity, which is used to accommodate the external plug.

[0011] Furthermore, the recessed plug filter also includes a fuse mounting base; the top of the filter body is also provided with a fuse mounting groove, the fuse mounting base is detachably snapped into the groove wall of the fuse mounting groove, and a fuse mounting cavity is formed between the fuse mounting base and the groove wall of the fuse mounting groove, the fuse mounting cavity being used to accommodate the fuse.

[0012] Furthermore, one side wall of the fuse mounting base is provided with a guide ridge and a limiting ridge;

[0013] The top of the filter body is also provided with a guide groove and a limiting groove; the two sides of the guide groove are respectively connected to the fuse mounting groove and the second recessed groove, and the limiting groove is connected to the top of the guide groove;

[0014] The guide ridge is slidably engaged with the guide groove; the limiting groove abuts against the limiting ridge.

[0015] Furthermore, the second protective cover also covers the limiting through groove, and a limiting cavity is formed between the second protective cover, the limiting through groove and the guide through groove. The limiting cavity is used to accommodate the limiting edge and the guide edge.

[0016] Furthermore, the side of the guide ridge is provided with a first locking member; the groove wall of the guide channel is provided with a second locking member, and the first locking member is detachably locked to the second locking member.

[0017] Furthermore, both the first and second locking components are semi-circular prisms, and the prism axis of the first and second locking components is perpendicular to the sliding direction of the guide ridge.

[0018] Furthermore, the recessed plug filter also includes a filter switch; the filter switch is located at the top of the filter body.

[0019] The present invention has the following beneficial effects:

[0020] The recessed plug filter proposed in this utility model, by placing the inner plug in the first recessed groove of the filter body, uses the filter body to initially block pollution of the inner plug when the recessed plug filter is working, thereby reducing the pollution of the inner plug by the surrounding environment; when the recessed plug filter is idle, the first protective cover further blocks external dust or moisture from entering the inner plug. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] in:

[0023] Figure 1 This is a schematic diagram of the structure of a recessed plug filter in one embodiment of the present invention;

[0024] Figure 2 This is a top-view exploded view of the recessed plug filter in one embodiment of the present invention.

[0025] Figure 3 for Figure 2 A view taken from below;

[0026] Figure 4 This is a schematic diagram of another disassembled state of the recessed plug filter in one embodiment of the present invention.

[0027] Figure 5 This is an exploded view of the structure of the recessed plug filter in another embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the recessed plug filter in another embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the cooperation structure between the first and second locking components of the recessed plug filter in one embodiment of the present invention.

[0030] Figure 8 This is a schematic diagram of the installation state of the recessed plug filter in one embodiment of the present invention.

[0031] The annotations in the attached figures are explained as follows:

[0032] 10. Filter body; 11. First recessed groove; 111. Fixing groove; 12. Snap-fit ​​groove; 13. Second recessed groove; 14. Fuse mounting groove; 15. Guide groove; 151. Second locking piece; 16. Limiting groove; 17. Mounting tab; 171. Rotating support; 172. Rotating rod; 173. Rotating spring; 20. Inner plug; 30. First protective cover; 31. Fixing soft plug; 40. Rotating locking piece; 50. Outer plug; 60. Second protective cover; 61. Auxiliary rotating section; 62. Support section; 63. Cover section; 631. Fitting protrusion; 70. Fuse mounting base; 71. Guide ridge; 711. First locking piece; 72. Limiting ridge; 73. Fuse slot; 80. Filter switch. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figures 1 to 8 The first embodiment of this utility model proposes a recessed plug filter, which includes: a filter body 10, an inner plug 20, and a first protective cover 30; the bottom end of the filter body 10 is provided with a first recessed groove 11; the inner plug 20 is disposed in the first recessed groove 11; the first protective cover 30 is detachably connected to the groove side wall of the first recessed groove 11, and the first protective cover 30 and the groove wall of the first recessed groove 11 enclose a first protective cavity, which is used to accommodate the inner plug 20.

[0035] In this embodiment, the inner plug 20 is semi-hidden using the first recessed groove 11. The groove wall of the first recessed groove 11 partially blocks external dust from contaminating the inner plug 20. Even when the recessed plug filter is in working mode, it can still partially prevent dust from the working area from contaminating the inner plug 20. When the recessed plug filter is idle, the first protective cover 30 fits into the groove side wall of the first recessed groove 11, further preventing external dust or moisture from contacting the inner plug 20 with the help of the first protective cover 30. This ensures the normal use of the pins of the inner plug 20 and improves the service life and safety of the recessed plug filter.

[0036] Furthermore, the first protective cover 30 completely prevents external objects from colliding with the inner plug 20 when the recessed plug filter is idle. When the recessed plug filter is in operation, the first protective cover 30 is removed from the filter body 10, and the inner plug 20 is placed in the first recessed groove 11, thus achieving a recessed setting of the inner plug 20. This not only reduces the space occupied by the recessed plug filter, but also reduces the collision rate of external objects with the inner plug 20 and ensures the normal use of the recessed plug filter.

[0037] Specifically, the first recessed groove 11 is L-shaped, which not only reduces space occupancy but also facilitates the connection of the inner plug 20.

[0038] Reference Figures 1 to 5 The first protective cover 30 has a fixed soft plug 31 at its opening; the first recessed groove 11 has a fixed groove 111 on its side wall, and the fixed soft plug 31 is detachably fitted into the groove wall of the fixed groove 111.

[0039] In this embodiment, the combination of the fixed soft plug 31 and the fixed groove 111 ensures the detachable cover of the first protective cover 30 and the first recessed groove 11, improves the sealing degree of the cover of the first protective cover 30 and the first recessed groove 11, and strengthens the prevention of moisture, dust and other substances from entering the first protective cavity.

[0040] Specifically, the fixing soft plug 31 is made of silicone.

[0041] Furthermore, the recessed plug filter also includes a swivel locking member 40; one end of the swivel locking member 40 is rotatably fixed to the outer wall of the first protective cover 30, and the side wall of the filter body 10 is provided with a snap-fit ​​groove 12; the other end of the swivel locking member 40 is snapped and fixed to the snap-fit ​​groove 12, see Figure 6 .

[0042] In this embodiment, the screw clip 40 is used to engage with the snap-fit ​​groove 12 to improve the sealing connection strength between the first protective cover 30 and the filter body 10.

[0043] Reference Figures 1 to 4 The recessed plug filter also includes an external plug 50; the top of the filter body 10 is provided with a second recessed groove 13, and the external plug 50 is disposed in the second recessed groove 13.

[0044] In this embodiment, the second recessed groove 13 is used to achieve a semi-hidden setting of the external plug 50, reducing the probability of collision between external objects and the external plug 50.

[0045] Specifically, the second recessed groove 13 is a straight groove with only one opening. The opening of the second recessed groove 13 is directly opposite the bottom wall of the second recessed groove 13. The external plug 50 is located on the bottom wall of the second recessed groove 13. The second recessed groove 13 serves as a guide to facilitate the connection and fixation of the socket head of the external wire with the external plug 50.

[0046] Reference Figures 1 to 4 The recessed plug filter also includes a second protective cover 60; the second protective cover 60 is rotatably fixed to the top end of the filter body 10, and the second protective cover 60 covers the second recessed groove 13 to form a second protective cavity, which is used to accommodate the external plug 50.

[0047] In this embodiment, the second protective cover 60 is used to cover the second recessed groove 13, ensuring that the external plug 50 is protected from collisions and contamination by dust, moisture and other contaminants when the external plug 50 is idle.

[0048] Reference Figures 1 to 4 The recessed plug filter also includes a fuse mounting base 70; the top of the filter body 10 is also provided with a fuse mounting groove 14, the fuse mounting base 70 is detachably snapped into the groove wall of the fuse mounting groove 14, and a fuse mounting cavity is formed between the fuse mounting base 70 and the groove wall of the fuse mounting groove 14, the fuse mounting cavity being used to accommodate the fuse.

[0049] In this embodiment, the fuse mounting base 70 is detachably snapped into the fuse mounting slot 14, which facilitates the replacement of the fuse in the recessed plug filter and improves the safety of the recessed plug filter.

[0050] Reference Figures 1 to 4 The fuse mounting base 70 has a guide ridge 71 and a limiting ridge 72 on one side wall;

[0051] The top of the filter body 10 is also provided with a guide groove 15 and a limiting groove 16; the two sides of the guide groove 15 are respectively connected to the fuse mounting groove 14 and the second recessed groove 13, and the limiting groove 16 is connected to the top of the guide groove 15.

[0052] The guide ridge 71 is slidably engaged with the guide groove 15; the groove wall of the limiting groove 16 abuts against the limiting ridge 72.

[0053] In this embodiment, the combination of the guide groove 15 and the guide ridge 71 guides the fuse mounting base 70 in the first direction Y, preventing horizontal offset of the fuse mounting base 70 and the fuse mounting groove 14 during installation; the combination of the limiting groove 16 and the limiting ridge 72 guides the fuse mounting base 70 in the second direction X, preventing excessive downward movement of the fuse mounting base 70 and the fuse mounting groove 14 in the vertical direction, ensuring the safety of the inserted fuse.

[0054] Furthermore, the fuse mounting slot 14 is provided with an elastic element, so that the fuse is located between the fuse mounting base 70 and the elastic element, ensuring that fuses of different lengths can be stably fixed in the fuse mounting cavity.

[0055] Furthermore, the fuse mounting base 70 is provided with a fuse holder 73, which is used to secure the fuse. See Figure 3 .

[0056] Reference Figures 1 to 2 The second protective cover 60 also covers the limiting through groove 16, and a limiting cavity is formed between the second protective cover 60, the limiting through groove 16 and the guide through groove 15. The limiting cavity is used to accommodate the limiting ridge 72 and the guide ridge 71.

[0057] In this embodiment, the second protective cover 60 is used to improve the installation stability of the fuse mounting base 70 and the fuse mounting groove 14.

[0058] Reference Figures 1 to 4 , Figure 8 The top end of the filter body 10 is provided with a mounting tab 17, which is used to assist in installing the filter body 10 into the mounting position, so that the inner plug 20 is located inside the mounting position and the outer plug 50 is located outside the mounting position.

[0059] Further based on this embodiment, the second protective cover 60 is rotatably fixed to the mounting tab 17. The second protective cover 60 includes an auxiliary rotating section 61, a support section 62, and a cover section 63 connected in sequence; the support section 62 is rotatably fixed to the mounting tab 17; the cover section 63 is used to cover the second recessed groove 13; the auxiliary rotating section 61 is used to facilitate user pressing, so that the cover section 63 rotates away from the second recessed groove 13 with the support section 62 as the rotation center. Figures 1 to 4 .

[0060] Furthermore, the mounting tab 17 is provided with two rotating supports 171, and a rotating rod 172 is provided between the two rotating supports 171. The support section 62 is rotatably fixed on the rotating rod 172, and a rotating spring 173 is sleeved on the rotating rod 172. The two tail ends of the rotating spring 173 respectively abut against the auxiliary rotating section 61 and the mounting tab 17. Figures 1 to 4 .

[0061] Furthermore, the inner surface of the cover section 63 is provided with a fitting protrusion 631, which engages with the second recessed groove 13, thereby improving the fitting connection strength between the second protective cover 60 and the second recessed groove 13. Figure 3 .

[0062] Reference Figures 1 to 4 , Figure 7 The guide rib 71 is provided with a first locking member 711 on its side; the guide groove 15 is provided with a second locking member 151 on its groove wall, and the first locking member 711 is detachably locked to the second locking member 151.

[0063] In this embodiment, the engagement of the first locking member 711 and the second locking member 151 serves as a limiting action at the bottom in the second direction, and the limiting through groove 16 and the limiting ridge 72 serve as a limiting action at the top in the second direction, thereby improving the installation and fixation of the fuse mounting base 70 and the fuse mounting groove 14.

[0064] Reference Figures 1 to 4 Both the first locking member 711 and the second locking member 151 are semi-circular prisms, and the prism axis of the first locking member 711 and the second locking member 151 is perpendicular to the sliding direction of the guide ridge 71.

[0065] In this embodiment, the first locking member 711 and the second locking member 151 are ensured to be both locked in place and detachable.

[0066] Reference Figures 1 to 4 The recessed plug filter also includes a filter switch 80; the filter switch 80 is located at the top of the filter body 10.

[0067] In this embodiment, the safety of using the recessed plug filter is improved by utilizing the filter switch 80.

[0068] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A recessed plug filter, characterized in that, include: The filter body has a first recessed groove at its bottom end; An inner plug, wherein the inner plug is disposed in the first recessed groove; The first protective cover is detachably connected to the side wall of the first recessed groove. The first protective cover and the groove wall of the first recessed groove form a first protective cavity, which is used to accommodate the inner plug.

2. The recessed plug filter according to claim 1, characterized in that, The opening of the first protective cover is provided with a fixed soft plug; the side wall of the opening of the first recessed groove is provided with a fixed groove, and the fixed soft plug is detachably fitted and connected to the groove wall of the fixed groove.

3. The recessed plug filter according to claim 1, characterized in that, The recessed plug filter also includes an external plug; the top of the filter body is provided with a second recessed groove, and the external plug is disposed in the second recessed groove.

4. The recessed plug filter according to claim 3, characterized in that, The recessed plug filter also includes a second protective cover; the second protective cover is rotatably fixed to the top end of the filter body, and the second protective cover covers the second recessed groove to form a second protective cavity, which is used to accommodate the external plug.

5. The recessed plug filter according to claim 4, characterized in that, The recessed plug filter also includes a fuse mounting base; the top of the filter body is also provided with a fuse mounting groove, the fuse mounting base is detachably snapped into the groove wall of the fuse mounting groove, and a fuse mounting cavity is formed between the fuse mounting base and the groove wall of the fuse mounting groove, the fuse mounting cavity is used to accommodate the fuse.

6. The recessed plug filter according to claim 5, characterized in that, The fuse mounting base has a guide ridge and a limiting ridge on one side wall; The top of the filter body is also provided with a guide groove and a limiting groove; the two sides of the guide groove are respectively connected to the fuse mounting groove and the second recessed groove, and the limiting groove is connected to the top of the guide groove; The guide ridge is slidably engaged with the guide groove; the limiting groove abuts against the limiting ridge.

7. The recessed plug filter according to claim 6, characterized in that, The second protective cover also covers the limiting through groove, and a limiting cavity is formed between the second protective cover, the limiting through groove and the guide through groove. The limiting cavity is used to accommodate the limiting edge and the guide edge.

8. The recessed plug filter according to claim 6, characterized in that, The guide ridge has a first locking component on its side; the guide groove has a second locking component on its groove wall, and the first locking component is detachably locked to the second locking component.

9. The recessed plug filter according to claim 8, characterized in that, Both the first and second locking components are semi-circular prisms, and the prism axis of the first and second locking components is perpendicular to the sliding direction of the guide edge.

10. The recessed plug filter according to claim 1, characterized in that, The recessed plug filter also includes a filter switch; the filter switch is located at the top of the filter body.