Breathable vehicle door driving device

Abstract

The utility model discloses a ventilation type car door driving device which comprises a driving mechanism and a driving rod, the driving mechanism is fixed on a mounting plate and used for driving the driving rod to move in a reciprocating mode, a rubber corrugated pipe sleeve and a protective sleeve are respectively sleeved at two ends of the driving rod, and two ends of the rubber corrugated pipe sleeve are respectively fixed with a car body and the mounting plate. The sheath is fixed on the mounting plate, an air hole is formed in one end, opposite to the mounting plate, of the sheath, and the air hole is provided with a waterproof breathable film; according to the ventilation type vehicle door driving device, the ventilation hole is formed in the protective sleeve, and the waterproof ventilation film is arranged on the ventilation hole, so that the sealing waterproof performance is guaranteed, external water vapor is prevented from entering and corroding the driving mechanism, the protective sleeve can be communicated with the outside, and excessive shrinkage of the protective sleeve is avoided.

Description

Technical Field

[0001] The utility model relates to automobile door technology, in particular to a breathable door driving device. Background Art

[0002] With the development of electric and intelligent vehicles, the door system has gradually evolved from manual doors to automatic door systems.

[0003] Most car doors on the current market can be opened and closed electrically, and the door drive mechanism that realizes the above-mentioned electric door opening and closing function generally adopts the following structure: it includes a motor, a gearbox, a transmission gear and a drive rod. The drive rod can move back and forth and position under the coordinated action of the motor, gearbox and transmission gear to realize the opening or closing action of the car door.

[0004] In order to improve the sealing performance and prevent water from entering the driving mechanism, a rubber bellows sleeve is generally provided on the outside of the connection part between the driving device and the vehicle body, and a waterproof sheath is provided at the other end of the driving device, that is, a sheath is provided at both ends of the driving rod to prevent external rainwater from entering without affecting the normal movement of the driving rod.

[0005] However, in actual use, due to the good sealing performance, the driving device will drive the rubber bellows sleeve to extend when driving the car door to open, and the internal air pressure of the waterproof sleeve and the rubber bellows sleeve will drop sharply, and the waterproof sleeve and the rubber bellows sleeve will shrink inward. The waterproof sleeve and the rubber bellows sleeve will fit with the driving rod, causing the driving rod to move and rub against the waterproof sleeve and the rubber bellows sleeve, resulting in obvious abnormal noise when the car door is opened and closed. Long-term friction may even damage the waterproof sleeve and the rubber bellows sleeve. Utility Model Content

[0006] In order to solve the above-mentioned defects of the prior art, the utility model provides a breathable vehicle door drive device, which not only ensures the sealing and waterproof performance, but also enables the sheath to be connected with the outside world to avoid shrinkage of the sheath.

[0007] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: a breathable vehicle door drive device, comprising a drive mechanism and a drive rod, wherein the drive mechanism is fixed to the mounting plate and is used to drive the drive rod to move back and forth, and the two ends of the drive rod are respectively covered with a rubber bellows sleeve and a sheath, and the two ends of the rubber bellows sleeve are respectively fixed to the vehicle body and the mounting plate, and the sheath is fixed to the mounting plate, and the sheath is provided with an air hole at one end relative to the mounting plate, and the air hole is provided with a waterproof and breathable membrane.

[0008] Preferably, the sheath includes a rubber sheath or a plastic sheath.

[0009] Preferably, a buckle is clamped at the air hole of the rubber sheath, a through hole is provided in the middle of the buckle, and the waterproof breathable membrane cover is provided in the through hole.

[0010] Preferably, a protrusion is provided around the vent hole, the protrusion is annular, and the height of the protrusion is greater than the thickness of the waterproof breathable membrane.

[0011] In summary, the present invention has achieved the following technical effects:

[0012] The breathable door drive device of the present invention has breathable holes on the protective cover and a waterproof breathable membrane on the breathable holes, which not only ensures the sealing and waterproof performance and prevents external water vapor from entering and corroding the drive mechanism, but also enables the protective cover to be connected with the outside world and avoids excessive shrinkage of the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of Example 1 of the ventilation type vehicle door driving device of the present invention;

[0014] Figure 2 This is a partial structural diagram of Example 1 of the breathable door driving device of the present invention;

[0015] Figure 3 This is a schematic structural diagram of a second embodiment of a ventilated vehicle door drive device according to the present invention;

[0016] Figure 4 This is a partial structural diagram of Example 2 of the ventilation type vehicle door driving device of the present utility model;

[0017] Explanation of the accompanying drawings in the specification: 1. Driving mechanism; 2. Rubber sheath; 3. Buckle; 4. Waterproof and breathable membrane; 5. Protrusion; 6. Plastic sheath; 7. Ventilation hole. DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below with reference to the accompanying drawings.

[0019] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0022] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0023] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0024] Example 1:

[0025] like Figure 1-2 shows a breathable door drive device, comprising a drive mechanism 1 and a drive rod, wherein the drive mechanism 1 is fixed to a mounting plate and is used to drive the drive rod to move back and forth, wherein both ends of the drive rod are respectively sleeved with a rubber bellows sleeve and a protective sleeve, wherein both ends of the rubber bellows sleeve are respectively fixed to the vehicle body and the mounting plate, wherein the protective sleeve is fixed to the mounting plate, wherein one end of the protective sleeve relative to the mounting plate is provided with a breathable hole 7, wherein the breathable hole 7 is provided with a waterproof breathable membrane 4.

[0026] The waterproof breathable membrane 4, also known as breathing paper, is a new type of polymer waterproof material. Its manufacturing process requires significantly higher technical requirements than those of conventional waterproof materials. Furthermore, it possesses functional characteristics not found in other waterproof materials. Gas molecules are spaced relatively close together, allowing them to diffuse through the pores 7 of the membrane 4. Liquid molecules, however, are spaced closer together than the pores 7, and surface tension prevents them from passing through the membrane 4, effectively achieving a waterproof effect.

[0027] The driving mechanism 1 includes a motor, a gearbox and a transmission unit. The motor transmits power to the transmission unit through the gearbox, driving the drive rod to move back and forth. The transmission unit can be a transmission gear and a rack-shaped drive rod, a transmission nut and a screw-shaped drive rod.

[0028] The sheath is a rubber sheath 2; a buckle 3 is clamped at the air vent 7 of the rubber sheath 2, a through hole is provided in the middle of the buckle 3, and the waterproof breathable membrane 4 is covered in the through hole; the rubber sheath 2 has a certain elasticity, so when the driving rod drives the rubber bellows sleeve to open, the sheath will shrink and deform due to the change in air pressure, and directly sticking the waterproof breathable membrane 4 to the air vent 7 will cause the waterproof breathable membrane 4 to bend, deform or even fold, causing damage to the waterproof breathable membrane 4, so the buckle 3 is clamped first, the buckle 3 is hard and will not deform, and the waterproof breathable membrane 4 is stuck to the through hole of the buckle 3.

[0029] A protrusion 5 is provided around the air hole 7. The protrusion 5 is annular and has a height greater than the thickness of the waterproof breathable membrane 4. The protrusion 5 can protect the waterproof breathable membrane 4, reduce the situation where foreign objects directly touch the edge of the waterproof breathable membrane 4, and prevent the waterproof breathable membrane 4 from being uncovered.

[0030] Example 2:

[0031] like Figure 3 As shown in FIG. 4 , compared with embodiment 1, the sheath in this embodiment is a plastic sheath 6 ; the plastic sheath 6 is harder and less elastic, so when the driving rod drives the rubber bellows to expand, the sheath will not be deformed, so the waterproof breathable membrane 4 can be directly attached to the vent hole 7 .

[0032] The breathable door drive device of the present invention has a breathable hole 7 on the cover and a waterproof breathable membrane 4 on the breathable hole 7, which not only ensures the sealing and waterproof performance to prevent external water vapor from entering and corroding the drive mechanism 1, but also enables the cover to be connected with the outside world to avoid excessive shrinkage of the cover.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A ventilated door drive device, comprising a drive mechanism and a drive rod, wherein the drive mechanism is fixed to a mounting plate and is used to drive the drive rod to move back and forth, wherein both ends of the drive rod are respectively covered with a rubber bellows sleeve and a sheath, wherein both ends of the rubber bellows sleeve are respectively fixed to the vehicle body and the mounting plate, and the sheath is fixed to the mounting plate, characterized in that: The protective cover is provided with an air hole at one end relative to the mounting plate, and the air hole is provided with a waterproof and breathable membrane.

2. The ventilation door driving device according to claim 1, characterized in that: The sheath includes a rubber sheath and a plastic sheath.

3. The ventilation door driving device according to claim 2, characterized in that: A buckle is clamped at the air hole of the rubber sheath, a through hole is provided in the middle of the buckle, and the waterproof breathable membrane cover is arranged in the through hole.

4. The ventilation door driving device according to claim 1, characterized in that: A protrusion is provided around the vent hole, the protrusion is ring-shaped, and the height of the protrusion is greater than the thickness of the waterproof breathable membrane.

Images