Drying pipe for automobile headlamp

Abstract

According to the technical scheme, the drying pipe for the automobile headlamp is characterized by comprising a pipe body detachably installed on a headlamp shell, a cavity used for containing a drying agent is formed in the pipe body, a plurality of through holes are formed in the pipe body and communicated with the cavity and the outer portion of the pipe body, a screw cap is fixedly arranged at one end of the pipe body, and a pipe opening is formed in the other end of the pipe body. One side of the pipe opening is provided with a foldable blocking cover in an extending mode, the blocking cover closes or opens the pipe opening through folding, the pipe opening is provided with a positioning protrusion and a clamping groove, the blocking cover is provided with a positioning hole and a clamping block, and when the blocking cover closes the pipe opening, the positioning protrusion is inserted into the positioning hole, and the clamping block is inserted into the clamping groove. The utility model has the advantages of simple structure, convenience in replacement, disassembly and assembly, integrated structure, few parts and good use reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive headlights, and more specifically, to a drying tube for automotive headlights. Background Art

[0002] In existing automotive front headlights, fogging often occurs inside the headlights. Headlight fogging may cause problems such as glare, insufficient headlight brightness, and marks remaining inside the lamp cover. The main reason for this problem is that the air fluidity of the lamp itself is not strong. Once moisture enters the headlight housing, it is difficult to discharge itself and remains in the lamp, forming a fogging problem.

[0003] Currently, the simplest and most direct solution to the fogging problem is to place a desiccant inside the headlight housing. The desiccant absorbs moisture and water, thereby avoiding the occurrence of the fogging problem. For example, Chinese Patent No. CN202691989U discloses an air vent pipe device for automotive headlights. The device includes an air vent pipe integrally connected to the lamp housing. A desiccant barrel is provided in the air vent pipe. The desiccant barrel is filled with a desiccant. The front end of the desiccant barrel is abutted against the lamp housing through a rubber pad. A perforated plate is padded at the rear end of the desiccant barrel. A rear cover is provided at the rear end of the air vent pipe. A spring abuts between the bottom surface inside the rear cover and the perforated plate. An air vent groove is provided on the rear cover. A gap is left between the desiccant barrel and the air vent pipe. Air enters and exits through the desiccant in the air vent pipe, preventing water vapor from accumulating on the headlight housing and causing fogging.

[0004] The above-mentioned prior art solves the problem of absorbing moisture. However, the moisture absorption effect of the desiccant itself is limited, and it needs to be replaced after being used for a period of time. The existing device has many components, is troublesome to disassemble and assemble during replacement, and the components are also easily damaged and lost. Based on this, this application is proposed to solve the above problems. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a drying tube for automotive headlights, which has the advantages of simple structure, convenient disassembly and assembly for replacement, integrated structure setting, few components, and good use reliability.

[0006] To achieve the above object, the utility model provides the following technical solution: A drying tube for automotive headlights includes a tube body detachably installed on the headlight housing. A cavity for accommodating a desiccant is provided inside the tube body. A plurality of through holes are provided on the tube body. The through holes communicate the cavity with the outside of the tube body. A rotary cap is fixedly provided at one end of the tube body, and a tube orifice is provided at the other end. A foldable baffle is extended on one side of the tube orifice. The baffle realizes the closing or opening of the tube orifice by folding. A positioning protrusion and a card slot are provided at the tube orifice. A positioning hole and a clamping block are provided on the baffle. When the baffle closes the tube orifice, the positioning protrusion is inserted into the positioning hole, and the clamping block is inserted into the card slot.

[0007] The present utility model is further configured such that: the retaining cover and the pipe orifice are connected by flexible plastic.

[0008] The present utility model is further configured such that: uneven portions are provided on the circumferential side of the pipe orifice, and the shapes of the uneven portions are matched with the outer edge of the retaining cover.

[0009] The present utility model is further configured such that: a second through hole is provided on the retaining cover.

[0010] The present utility model is further configured such that: a disassembly and assembly opening for the pipe body to enter and exit is provided on the headlamp housing, a limiting member is provided on the side wall of the pipe body close to the screw cap, and the limiting member is adapted to the disassembly and assembly opening and forms a connection.

[0011] The present utility model is further configured such that: the limiting member includes a plurality of circumferentially protruding limiting retaining rings, fixing flanges are correspondingly provided on the disassembly and assembly opening, the limiting retaining rings and the fixing flanges are offset, and the pipe body drives the limiting retaining rings to be engaged with the fixing flanges by rotation.

[0012] The present utility model is further configured such that: a plurality of the limiting retaining rings are provided, and at least one of the limiting retaining rings is provided with a circumferential fixing portion, and the circumferential fixing portion is matched with the fixing flange to restrict circumferential rotation.

[0013] The present utility model is further configured such that: a rotating handle is provided on the screw cap, and arc-shaped structures are provided at both ends of the rotating handle.

[0014] The present utility model is further configured such that: anti-slip patterns are provided at the arc-shaped structures of the rotating handle.

[0015] In summary, the present utility model has the following beneficial effects:

[0016] Compared with the prior art, in terms of disassembly and assembly, through the cooperation of the limiting retaining rings and the fixing flanges, only by rotating the rotating handle with one hand, the disassembly and installation from the headlamp housing can be completed, which is very convenient and fast. When replacing the desiccant, the clamping block can be directly ejected from the card slot, and then the retaining cover can be folded over to open the pipe orifice to replace the desiccant in the cavity, which is also convenient and fast. Moreover, the pipe body, the screw cap, the retaining cover and other components of the present utility model are integrally provided, and there will be no independent components during the process of disassembling and assembling the pipe body and replacing the desiccant, and the situation of component loss will not occur. The matching structure of the present utility model is simple, not easily damaged, and has strong use reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram when the retaining cover is opened.

[0018] Figure 2 It is a schematic structural diagram when the retaining cover is closed.

[0019] Figure 3 It is a schematic structural diagram of the present embodiment installed on the headlight housing.

[0020] Figure 4 It is a schematic partial structural diagram of the tube body installed inside the headlight housing.

[0021] Figure 5 It is a schematic structural diagram of the cooperation between the limiting component and the fixed retaining piece.

[0022] Reference numerals: 1, tube body; 101, cavity; 102, through hole; 2, screw cap; 201, rotating handle; 3, pipe orifice; 301, positioning protrusion; 302, clamping groove; 4, retaining cover; 401, positioning hole; 402, clamping block; 5, concave-convex part; 6, second through hole; 7, limiting component; 701, limiting retaining ring; 8, fixed retaining piece; 9, circumferential fixing part; 901, magnetic attraction component; 10, headlight housing; 11, disassembly and assembly opening. Detailed implementation manners

[0023] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] The present embodiment discloses a drying tube for an automotive headlight, as Figures 1-5 shown, which includes a tube body 1 detachably installed on a headlight housing 10. The tube body 1 has a cavity 101 for accommodating a desiccant. The desiccant can be selected from existing ones on the market, such as magnesium chloride desiccant, silica gel desiccant, or other special desiccants for vehicle lights. A plurality of through holes 102 are provided on the tube body 1. The through holes 102 communicate the cavity 101 with the outside of the tube body. The outside of the tube body corresponds to the space in the headlight housing 10. The function of the through holes 102 is to form a circulation between the air in the headlight housing 10 and the desiccant in the cavity 101 through the holes, so that the moisture in the air will be absorbed by the desiccant, thereby avoiding the problem of headlight fogging.

[0025] Further, a screw cap 2 is fixedly provided at one end of the tube body 1, and a pipe orifice 3 is provided at the other end. A foldable retaining cover 4 extends from one side of the pipe orifice 3. The retaining cover 4 is folded to close or open the pipe orifice 3. A positioning protrusion 301 and a clamping groove 302 are provided at the pipe orifice 3, and a positioning hole 401 and a clamping block 402 are provided on the retaining cover 4. When the retaining cover 4 closes the pipe orifice 3, the positioning protrusion 301 is inserted into the positioning hole 401, and the clamping block 402 is inserted into the clamping groove 302. Through the above settings, the retaining cover 4 can form a stable cooperation with the positioning protrusion 301 and the clamping groove 302 of the pipe orifice 3 by relying on the positioning hole 401 and the clamping block 402, ensuring the accurate position of the retaining cover 4.

[0026] Further, the baffle 4 and the pipe orifice 3 are connected by a flexible plastic. With the above structure, the baffle 4 and the pipe body 1 form an integral whole, and there will be no problem of loss during the disassembly and assembly process. At the same time, it is preferable that both the pipe body and the baffle are integrally formed of plastic, which can also reduce the manufacturing cost.

[0027] Further, concavo-convex portions 5 are provided on the circumferential side of the pipe orifice 3, and the concavo-convex portions 5 are matched with the outer edge shape of the baffle 4. The structure of the concavo-convex portions 5 further limits the baffle 4 to improve the structural stability.

[0028] Further, a second through hole 6 is provided on the baffle 4. By providing the second through hole 6, air can also enter the cavity 101 from the side of the baffle 4.

[0029] Further, referring to Figures 3-5 , on the headlight housing 10, there is a disassembly and assembly opening 11 for the pipe body 1 to enter and exit. A limiting member 7 is provided on the side wall of the pipe body 1 close to the screw cap 2, and the limiting member 7 is adapted to the disassembly and assembly opening 11 and forms a connection. The pipe body 1 can be inserted into or pulled out of the disassembly and assembly opening 11 along the direction indicated by the double-headed arrow in Figure 4 . The headlight housing 10 in Figure 4 is a small part of the local part. The left side of the figure corresponds to the inside of the housing, and the right side of the figure corresponds to the outside of the headlight housing; preferably, the limiting member 7 includes a plurality of circumferentially protruding limiting retaining rings 701, and a fixed retaining piece 8 is correspondingly provided on the disassembly and assembly opening 11. The limiting retaining rings 701 and the fixed retaining piece 8 are misaligned, and the pipe body 1 is rotated to drive the limiting retaining rings 701 to be engaged with the fixed retaining piece 8. Combining Figures 4-5 , after the pipe body 1 is inserted into the disassembly and assembly opening 11, it is rotated by an angle so that the originally misaligned limiting retaining rings 701 and the fixed retaining piece 8 are stuck to prevent the pipe body 1 from coming out.

[0030] Further, referring to Figure 5 , a plurality of limiting retaining rings 701 are provided, and at least one of the limiting retaining rings 701 is provided with a circumferential fixing portion 9. The circumferential fixing portion 9 is matched with the fixed retaining piece 8 to restrict the circumferential rotation. The circumferential fixing portion 9 is preferably a bent structure, which can abut against the fixed retaining piece 8 to avoid further rotation. At this time, the position fixes the pipe body 1 both axially and circumferentially. During installation, it only needs to be inserted and rotated once, and during disassembly, it only needs to be rotated and pulled out in the reverse direction, which is very convenient. Generally, this fixing method will not become loose when not subjected to a large external force. For special operation vehicles, their vibration may be relatively large and stronger fixing is required. Preferably, a magnetic attraction component 901 can be provided on the circumferential fixing portion 9, and the fixed retaining piece 8 is made of a metal material that can be magnetically attracted, or a part of the fixed retaining piece 8 is made of a metal material that can be magnetically attracted. In this way, a magnetic attraction fixation is formed when the fixed retaining piece 8 and the circumferential fixing portion 9 abut against each other, forming a more stable connection and cooperation.

[0031] Further, see Figure 3 The rotary cover 2 is provided with a rotating handle 201, and arc structures are provided at both ends of the rotating handle 201. The arc structures are provided to facilitate the hand to rotate. Furthermore, anti-skid patterns are provided at the arc structures of the rotating handle 201. The anti-skid patterns increase friction, which is also for facilitating the hand to rotate.

[0032] The tube body 1, the screw cap 2 and the blocking cover 4 of the present embodiment are arranged in an integrated structure without redundant parts. When the desiccant is disassembled and replaced, parts will not be lost. At the same time, the matching structure of the blocking cover 4 and the tube mouth 3 of the present embodiment is simple, and the matching of the limiting component 7 at the screw cap 2 and the headlight housing 10 is simple. The prior art uses installation methods such as threads, which are often prone to thread slippage and jamming. The structure of the present embodiment is simple and reasonable, and the reliability is stronger.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A drying tube for automobile headlights, comprising a tube body (1) detachably mounted on a headlight housing, characterized in that: The tube body (1) has a cavity (101) for accommodating a desiccant therein, the tube body (1) is provided with a plurality of through holes (102), the through holes (102) communicating the cavity (101) with the outside of the tube body, a screw cap (2) fixedly provided at one end of the tube body (1), and a pipe mouth (3) provided at the other end, a foldable blocking cover (4) extending from one side of the pipe mouth (3), the blocking cover (4) closing or opening the pipe mouth (3) by folding, a positioning protrusion (301) and a clamping groove (302) provided at the pipe mouth (3), a positioning hole (401) and a clamping block (402) provided on the blocking cover (4), when the blocking cover (4) closes the pipe mouth (3), the positioning protrusion (301) is inserted into the positioning hole (401), and the clamping block (402) is inserted into the clamping groove (302).

2. A drying tube for automobile headlights according to claim 1, characterized in that: The blocking cover (4) is connected to the pipe opening (3) via flexible plastic.

3. The drying tube for automobile headlights according to claim 1, characterized in that: A concave-convex portion (5) is provided on the peripheral side of the pipe opening (3), and the concave-convex portion (5) matches the shape of the outer edge of the blocking cover (4).

4. A drying tube for automobile headlights according to claim 1 or 2, characterized in that: The blocking cover (4) is provided with a second through hole (6).

5. The drying tube for automobile headlights according to claim 1, characterized in that: The headlight housing is provided with a disassembly and assembly opening for the tube body (1) to enter and exit, and a limiting component (7) is provided on the side wall of the tube body (1) close to the rotary cover (2), and the limiting component (7) is adapted to and connected with the disassembly and assembly opening.

6. A drying tube for automobile headlights according to claim 5, characterized in that: The limiting component (7) comprises a plurality of circumferentially protruding limiting retaining rings (701), a fixed retaining plate (8) is correspondingly provided on the disassembly and assembly opening, the limiting retaining rings (701) and the fixed retaining plate (8) are staggered, and the tube body (1) drives the limiting retaining rings (701) to engage with the fixed retaining plate (8) by rotating.

7. A drying tube for automobile headlights according to claim 6, characterized in that: A plurality of the limit stop rings (701) are provided, and at least one of the limit stop rings (701) is provided with a circumferential fixing portion (9), and the circumferential fixing portion (9) cooperates with a fixing stop sheet (8) to restrict circumferential rotation.

8. The drying tube for automobile headlights according to claim 1, characterized in that: The rotary cover (2) is provided with a rotary handle (201), and arc structures are provided at both ends of the rotary handle (201).

9. A drying tube for automobile headlights according to claim 8, characterized in that: The arc-shaped structure of the rotating handle (201) is provided with anti-slip patterns.

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