Reelpipe buffering mechanism and automotive sunshade curtain

Abstract

The utility model provides a reelpipe buffer mechanism and an automobile sunshade curtain, which belong to the technical field of automobile parts, and comprise a curtain frame, the curtain frame is provided with a damper, and the damper is provided with a damping gear; the reel pipe is rotatably connected with the curtain frame, the reel pipe is provided with a buffer gear fixed to the reel pipe in the circumferential direction, and the buffer gear is meshed with the damping gear; the buffering mechanism has the advantages that the buffering mechanism can buffer the reel pipe when the sunshade curtain retracts, the design that the reel pipe and the damper are independently installed is adopted in the buffering mechanism, and stability, namely concentricity and precision, of the reel pipe can be improved when the reel pipe rotates.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts and relates to a rolling tube buffer mechanism and a vehicle sunshade. Background Art

[0002] With the continuous development of automobile industry technology, in order to protect passengers' privacy and provide sunshade function, sunshade curtains are installed on some cars. The roller tube of the sunshade curtain can retract and extend the curtain when rotating. Among them, the extension of the sunshade curtain is generally achieved manually or electrically, and the retraction of the sunshade curtain is generally achieved by built-in torsion springs or springs. Since the roller tube is usually a plastic part, if the sunshade curtain cannot be buffered when retracting, the roller tube is easily impacted and damaged.

[0003] Although there is currently a damping sleeve structure formed by assembling a damper and a sleeve together, which can be directly inserted into the reel and connected to the reel and the end cover, thereby providing a damping buffering effect when the reel rotates, this structure, however, since the damper is arranged between the reel and the fixed shaft, the arrangement of the damper will affect the concentricity and precision of the reel when rotating, and it is easy to get stuck. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems in the prior art and to provide a rolling tube buffer mechanism and a vehicle sunshade.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a coiled pipe buffer mechanism, comprising:

[0006] A curtain frame, wherein the curtain frame is provided with a damper, and the damper is provided with a damping gear;

[0007] A roller tube is rotatably connected to the curtain frame, and the roller tube has a buffer gear fixed to the circumference thereof, and the buffer gear is meshed with the damping gear.

[0008] Preferably, a shaft sleeve is inserted into the end of the rolling tube, and the buffer gear is located on the shaft sleeve.

[0009] Preferably, the buffer gear and the shaft sleeve are integrally formed.

[0010] Preferably, one of the inner wall of the reel and the outer wall of the sleeve is provided with ribs and the other is provided with grooves, the ribs are embedded in the grooves and the sleeve is circumferentially fixedly connected to the reel.

[0011] Preferably, the curtain frame is provided with a fixed shaft, the shaft sleeve is provided with a shaft hole, and the shaft sleeve is sleeved on the fixed shaft through the shaft hole.

[0012] Preferably, a washer is sleeved on the fixed shaft, and the washer is cushioned between the shaft sleeve and the curtain frame.

[0013] Preferably, one of the curtain frame and the damper is provided with a buckle and the other is provided with a slot, and the buckle is connected to the slot so that the damper is detachably connected to the curtain frame.

[0014] A vehicle sunshade comprises the above-mentioned roller tube buffer mechanism.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. A mechanism is provided that can buffer the roller tube when the sunshade is retracted. The buffer mechanism adopts a design in which the roller tube and the damper are installed independently, which can improve the stability of the roller tube during rotation, that is, the concentricity and precision.

[0017] 2. The buffer gear and the sleeve are integrally formed, which means that the gear structure can be directly formed during the production stage of the sleeve without the need for subsequent gear assembly steps, thus reducing the number of work steps and assembly errors during the assembly process and improving the degree of automation and yield of production.

[0018] 3. This solution ensures that the small area where the reel and the sleeve contact has sufficient accuracy, so that the sleeve can be smoothly installed and fixed to the reel, and the normal meshing and operation of the buffer gear can be guaranteed. In this way, the reel can be directly connected to the fixed shaft, which increases the precision and stability of the reel when rotating, and also improves the tolerance and flexibility of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the coiled tube buffer mechanism of the utility model.

[0020] Figure 2 This is a schematic diagram of the coiled tube buffer mechanism of the utility model without the coiled tube.

[0021] Figure 3 This is a structural exploded view of the coiled tube buffer mechanism of the utility model.

[0022] In the figure, 100, curtain frame; 110, fixed shaft; 120, washer; 130, slot; 200, damper; 210, damping gear; 220, buckle; 300, roller tube; 400, shaft sleeve; 410, buffer gear; 420, shaft hole. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0024] like Figure 1-3 As shown, a roller buffer mechanism includes: a curtain frame 100, the curtain frame 100 is provided with a damper 200, and the damper 200 is provided with a damping gear 210; a roller 300, the roller 300 is rotatably connected to the curtain frame 100, and the roller 300 has a buffer gear 410 fixed to the circumference thereof, and the buffer gear 410 is meshed with the damping gear 210.

[0025] Specifically, the curtain frame 100 is used for installing the damper 200 and the roller tube 300. The damper 200 is close to the end of the roller tube 300, and the roller tube 300 has a buffer gear 410. The damper 200 is installed with a damping gear 210. The damper 200 and the roller tube 300 are linked by gear meshing. Therefore, when the roller tube 300 rotates, the damper 200 generates a damping force and transmits it to the roller tube 300 through the gear meshing structure, so that the roller tube 300 moves more smoothly, avoiding the collision of components on the curtain with the roller tube 300 due to the rapid winding of the curtain by the roller tube 300.

[0026] The working principle of this mechanism is based on the mechanical principle of gear meshing and damper 200. When the sunshade needs to be retracted, the roller tube 300 starts to rotate under the action of the torsion spring, driving the buffer gear 410 circumferentially fixed thereto to rotate together. The buffer gear 410 is meshed with the damping gear 210, and as the roller tube 300 rotates, the buffer gear 410 pushes the damping gear 210 to rotate. The damper 200 is designed with a special structure (such as oil, spring, air pressure, etc.). When the damping gear 210 rotates, it forces the damping medium to flow or compress / stretch, which generates resistance in the process, consumes part of the mechanical energy, and converts it into heat energy or other forms of energy loss. Therefore, the retraction speed of the sunshade can be controlled, avoiding direct impact on the roller tube 300 when it is suddenly and quickly retracted, thereby playing a buffering and protective role. This mechanism makes the entire retraction process smoother and quieter, reducing the risk of physical damage to the plastic roller tube 300.

[0027] A mechanism is provided which can buffer a roller tube when a sunshade is retracted. The buffer mechanism adopts a design in which the roller tube and a damper are independently installed, so as to improve the stability of the roller tube when it rotates, namely, the concentricity and precision.

[0028] like Figure 1-3 As shown, on the basis of the above embodiment, a shaft sleeve 400 is inserted into the end of the roller tube 300 , and a buffer gear 410 is located on the shaft sleeve 400 .

[0029] In this embodiment, the buffer gear 410 is not directly fixed on the roller tube 300. The end of the roller tube 300 is specially designed with a sleeve 400. Part of the sleeve 400 is inserted or fastened in the end of the roller tube 300. The sleeve 400 plays the role of carrying the buffer gear 410. Since the buffer gear 410 is cleverly placed on the sleeve 400, and the sleeve 400 and the roller tube 300 are circumferentially fixed, when the roller tube 300 rotates, the sleeve 400 rotates accordingly, and the buffer gear 410 on the sleeve 400 rotates with the roller tube 300, and forms a reliable interaction with the damping gear 210 in the damper 200 on the curtain frame 100.

[0030] It should be noted that, traditionally, if the buffer mechanism directly relies on the precise concentricity of the reel 300 itself, any slight deviation may lead to jamming or unsmooth operation. However, the present solution ensures that the small section of the area where the reel 300 contacts the sleeve 400 has sufficient precision so that the sleeve 400 can be smoothly installed and fixed to the reel 300, thereby ensuring the normal engagement and operation of the buffer gear 410. In this way, the reel 300 can be directly connected to the fixed shaft 110, which increases the precision and stability of the reel 300 when it rotates, and also improves the tolerance and flexibility of assembly. Even if other parts of the reel 300 have certain tolerances during production, as long as they do not affect the installation position of the sleeve 400, they will not affect the performance of the overall buffer mechanism, making the design more practical and easy to implement.

[0031] Based on the above embodiment, the buffer gear 410 is integrally formed with the sleeve 400. This means that the gear structure can be directly formed during the production stage of the sleeve 400, without the need for subsequent gear assembly steps, thus reducing the number of steps and assembly errors during the assembly process, and improving the degree of automation and yield of production. This integrated design also helps to ensure the coaxiality of the buffer gear 410 and the roller tube 300.

[0032] It is worth pointing out here that one end of the roller tube 300 actually needs to be connected to the fixed shaft 110 on the curtain frame 100 through the shaft sleeve 400, and designing the buffer gear 410 on the shaft sleeve 400 is more conducive to production and manufacturing.

[0033] In addition to the above-mentioned embodiment, a connection method in which the buffer gear 410 is directly key-connected to the roller tube 300 may also be adopted, and it is only necessary to fix the buffer gear 410 and the roller tube 300 circumferentially.

[0034] like Figure 2-3 As shown, based on the above embodiment, one of the inner wall of the roller tube 300 and the outer wall of the sleeve 400 is provided with ribs and the other is provided with grooves, the ribs are embedded in the grooves and the sleeve 400 is circumferentially fixedly connected to the roller tube 300.

[0035] The fixing between the reel 300 and the sleeve 400 adopts a design of mutually fitting ribs and grooves, and both the ribs and the grooves extend along the axial direction of the reel 300. During installation, the ribs are aligned with the grooves, and then the sleeve 400 is inserted into the reel 300 from the opening of the reel 300, and the ribs are automatically embedded in the corresponding grooves to form a tight connection in the circumferential direction.

[0036] like Figure 1-3 As shown, on the basis of the above embodiment, the curtain frame 100 is provided with a fixed shaft 110, and the shaft sleeve 400 is provided with a shaft hole 420, and the shaft sleeve 400 is sleeved on the fixed shaft 110 through the shaft hole 420. The roller tube 300 is actually connected to the fixed shaft 110 through the shaft sleeve 400, and the shaft sleeve 400 itself is designed with a shaft hole 420, and this shaft hole 420 matches the size of the fixed shaft 110 on the curtain frame 100, allowing the shaft sleeve 400 to be accurately sleeved on the fixed shaft 110 through the shaft hole 420, forming a mechanical connection. A part of the shaft sleeve 400 is inserted into the end of the roller tube 300, so that the roller tube 300 is connected to the fixed shaft 110 through the shaft sleeve 400.

[0037] On the basis of the above embodiment, a washer 120 is sleeved on the fixed shaft 110 , and the washer 120 is cushioned between the shaft sleeve 400 and the curtain frame 100 .

[0038] like Figure 1-3 As shown, based on the above embodiment, one of the curtain frame 100 and the damper 200 is provided with a buckle 220 and the other is provided with a slot 130 , and the buckle 220 is connected with the slot 130 so that the damper 200 and the curtain frame 100 are detachably connected.

[0039] In order to facilitate the installation and maintenance between the curtain frame 100 and the damper 200, one of the curtain frame 100 and the damper 200 is designed with a buckle 220, and the other is provided with a corresponding slot 130. This design allows the two to be quickly and firmly connected through the simple docking of the buckle 220 and the slot 130. During installation, the buckle 220 on the damper 200 is only needed to be aligned with the slot 130 on the curtain frame 100 and gently pressed in to complete the installation. The operation is simple and quick. In addition, the matching design of the buckle 220 and the slot 130 ensures the position accuracy of the damper 200 each time it is installed, avoids installation deviation, and maintains the stable working performance of the system.

[0040] A vehicle sunshade includes a roller tube buffer mechanism. The main purpose is to provide effective buffer protection for the roller tube 300 when the sunshade is retracted to prevent impact damage. The roller tube buffer mechanism of the vehicle sunshade can effectively alleviate the impact on the plastic roller tube 300 when the sunshade is retracted, and can improve the stability of the roller tube 300 when the sunshade is rotated. The overall structure is simple and reliable, reducing the risk of jamming, and improving the service life of the sunshade and user experience.

[0041] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0042] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A coiled tube buffer mechanism, characterized in that: include: A curtain frame (100), wherein the curtain frame (100) is provided with a damper (200), and the damper (200) is provided with a damping gear (210); A roller tube (300) is rotatably connected to the curtain frame (100), and the roller tube (300) has a buffer gear (410) fixed to the circumference thereof, and the buffer gear (410) is meshed with the damping gear (210).

2. A coiled tube buffer mechanism according to claim 1, characterized in that: A shaft sleeve (400) is inserted into the end of the rolling tube (300), and the buffer gear (410) is located on the shaft sleeve (400).

3. A coiled tube buffer mechanism according to claim 2, characterized in that: The buffer gear (410) and the shaft sleeve (400) are integrally formed.

4. A coiled tube buffer mechanism according to claim 2 or 3, characterized in that: One of the inner wall of the roller tube (300) and the outer wall of the sleeve (400) is provided with a convex rib and the other is provided with a groove, the convex rib being embedded in the groove and circumferentially fixing the sleeve (400) to the roller tube (300).

5. A coiled tube buffer mechanism according to claim 2, characterized in that: The curtain frame (100) is provided with a fixed shaft (110), the shaft sleeve (400) is provided with a shaft hole (420), and the shaft sleeve (400) is sleeved on the fixed shaft (110) through the shaft hole (420).

6. A coiled tube buffer mechanism according to claim 5, characterized in that: A washer (120) is sleeved on the fixed shaft (110), and the washer (120) is cushioned between the shaft sleeve (400) and the curtain frame (100).

7. The coiled tube buffer mechanism according to claim 1, characterized in that: One of the curtain frame (100) and the damper (200) is provided with a buckle (220) and the other is provided with a slot (130), and the buckle (220) is connected to the slot (130) so that the damper (200) and the curtain frame (100) are detachably connected.

8. A sunshade for a vehicle, characterized in that: include: A hose reel buffer mechanism as claimed in any one of claims 1 to 7.

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