Automobile film unwinding mechanism convenient to disassemble

Abstract

The utility model belongs to the technical field of automobile film pasting, provide a kind of automobile film unwinding mechanism convenient to disassemble, including rack, one end of rack along its length direction has two detachable first shaft sleeve, one of first shaft sleeve is pressed in first limiting step, another first shaft sleeve is located between first limiting step and second limiting step;Rotary mechanism is equipped in one side of rack along its width direction, horizontal drive mechanism is equipped in the other side of rack along its width direction, and the output end of horizontal drive mechanism is connected with second shaft sleeve.This utility model connects extension shaft by one of shaft body part, and forms second limiting step, so when air expansion shaft is not long enough, second shaft sleeve can be driven on extension shaft and be pressed in second limiting step by horizontal drive mechanism, and then air expansion shaft is fixed.

Description

Technical Field

[0001] This utility model belongs to the field of automotive window tinting technology, specifically an easy-to-disassemble automotive window tinting unwinding mechanism. Background Technology

[0002] The development of automotive window tinting technology is closely related to the progress of the automotive industry and the upgrading of user needs. Early automotive window films mainly used ordinary PVC material, offering only basic sunshade functions and suffering from defects such as easy fading, poor heat insulation, and unstable optical performance. With the development of materials science, polyester film (PET) has become the mainstream substrate. Combined with coating, lamination, and magnetron sputtering processes, it achieves multi-functional integration of heat insulation, UV protection, and explosion protection. For different climatic environments, the demand for high heat insulation and low reflectivity films in high-temperature regions has driven the development of nano-ceramic films and metal sputtered films, while cold regions focus more on the low-temperature stretchability and defrosting performance of the film. Simultaneously, consumer demands for privacy protection, glare suppression, and paint protection have spurred the evolution of technology towards multi-layer composite structures. Through vacuum evaporation and micro-replication technologies, functional particles or microstructures are implanted into the film layers, improving optical uniformity and durability.

[0003] In existing technology, the shaft body of the air shaft has a limiting step. Generally, the bushing is first put on the shaft body and pressed against the limiting step before the air shaft is placed on the frame. The bushing is pressed against the limiting step to restrict the movement of the air shaft along its axial direction. Then, the bushing is locked by the locking device on the frame. However, this working method is only suitable for the case where the width of the air shaft and the width of the frame match. When the width of the frame is longer than the air shaft, although the bushing at one end of the shaft body can press against the limiting step, the bushing at the other end, although it can be put on the shaft body, cannot press against the limiting step. Therefore, it is impossible to limit the axial direction of the air shaft.

[0004] CN202221351418.3 discloses a conveniently detachable and assembleable material roll feeding device, comprising: a feeding frame, including a frame body; and a feeding assembly installed at one end of the feeding frame; the feeding assembly includes a feeding air shaft, an adjustable shaft seat, and a fixed shaft seat; the adjustable shaft seat includes a first base plate, a first mounting plate, and a first locking pin; the fixed shaft seat includes a second base plate, a second mounting plate, and a second locking pin; a first bushing is installed at one end of the feeding air shaft, and a second bushing is installed at the other end of the feeding air shaft; the first bushing is installed inside the first mounting plate, and the first locking pin abuts against the first bushing; the second bushing is installed inside the second mounting plate, and the second locking pin abuts against the second bushing.

[0005] However, the above-mentioned technical solutions have the same technical problems. Utility Model Content

[0006] The purpose of this invention is to solve the above problems and provide an easy-to-disassemble car film unwinding mechanism. This mechanism connects an extension shaft to one of the shaft bodies and forms a second limiting step. In this way, when the air expansion shaft is not long enough, a horizontal drive mechanism can drive a second bushing to fit onto the extension shaft and press against the second limiting step, thereby fixing the air expansion shaft.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A car film unwinding mechanism that is easy to disassemble is applicable to an air shaft. The air shaft includes an air expansion part and a shaft body part connected to both ends of the air shaft. The shaft body part is provided with a first limiting step. An extension shaft is connected to one end of one of the shaft body parts. The extension shaft and the shaft body part form a second limiting step.

[0009] The easily detachable car film unwinding mechanism includes a frame, and one end of the frame along its length has two detachable first bushings. The first bushings are rotatably connected to the shaft body, one of the first bushings abuts against a first limiting step, and the other first bushing is located between the first limiting step and the second limiting step.

[0010] The frame has a rotating mechanism for driving the air shaft to rotate on one side along its width direction, and a horizontal driving mechanism on the other side along its width direction. A second bushing is connected to the output end of the horizontal driving mechanism. The axis of the second bushing extends along the width direction of the frame. The horizontal driving mechanism is used to drive the second bushing to move along the width direction of the frame. The second bushing is used to be fitted on the extension shaft and abut against the first limiting step.

[0011] In the above-mentioned easy-to-disassemble car film unwinding mechanism, the rotating mechanism includes a first gear, a second gear and a mounting base. The first gear is sleeved on the shaft body, and the second gear is located on one side along the length of the frame and is used to mesh with the first gear.

[0012] The mounting base is connected to one side of the frame, and the side of the mounting base facing the second gear is an open side. A third gear that meshes with the second gear is provided inside the mounting base. A rotary drive assembly is provided on the mounting base, and the output end of the rotary drive assembly is connected to the third gear. The drive assembly is used to drive the third gear to rotate.

[0013] The aforementioned easy-to-disassemble car film unwinding mechanism also includes a U-shaped protective cover, the open end of which is connected to the side of the frame with the second gear, and one side of which is connected to the open side of the mounting base.

[0014] The side of the first frame, the cover and the mounting base cooperate to form an open receiving cavity on the right side, and the first gear, the second gear and the third gear are all located in the receiving cavity;

[0015] The top of the shield is hinged to a flap, which can be swung to close the open side of the receiving cavity.

[0016] In the above-mentioned easy-to-disassemble car film unwinding mechanism, the cover includes a first horizontal part, a vertical part and a second horizontal part connected in sequence. The free end of the first horizontal part is provided with a first connecting block, which is connected to the frame by bolts. The free end of the second horizontal part is provided with a second connecting block, which is connected to the frame by bolts. The flip cover is hinged to the top of the first horizontal part.

[0017] In the above-mentioned easy-to-disassemble car film unwinding mechanism, the vertical part is provided with a first notch for the shaft part to pass through, and the flip cover is provided with a second notch. When the flip cover is swung to close the open side of the receiving cavity, the first notch and the second notch cooperate to form a waist-shaped groove.

[0018] In the above-mentioned easy-to-disassemble car film unwinding mechanism, the horizontal drive mechanism includes a fixed seat and a threaded rod disposed on the other side of the frame along its length direction. The fixed seat is provided with a sliding groove, and a slider is provided in the sliding groove. The threaded rod is rotatably connected in the sliding groove and threadedly connected to the slider.

[0019] One end of the threaded rod extends away from the frame and passes through the fixed seat. A handwheel is provided at the end of the threaded rod that passes through the fixed seat. The second bushing is mounted on the slider.

[0020] In the above-mentioned easy-to-disassemble car film unwinding mechanism, a hand-tightening bolt is screwed onto the frame, and the hand-tightening bolt corresponds one-to-one with the first bushing. The hand-tightening bolt is used to lock the first bushing.

[0021] In the above-mentioned easy-to-disassemble car film unwinding mechanism, the frame includes a first frame and a second frame, the first frame and the second frame are connected, and an opening is provided at one end along the length direction of the first frame and the second frame; two first bushings are detachably connected to the two openings respectively, the rotating mechanism is located on the side of the first frame facing away from the second frame, and the horizontal drive mechanism is located on the side of the second frame facing away from the first frame.

[0022] In the above-mentioned easy-to-disassemble car film unwinding mechanism, both ends of the first bushing are provided with annular protrusions, and the two annular protrusions are respectively located on both sides of the opening.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] This invention connects an extension shaft to one of the shaft bodies and forms a second limiting step. When the air expansion shaft is not long enough, a horizontal drive mechanism can drive a second bushing to fit onto the extension shaft and press against the second limiting step, thereby fixing the air expansion shaft. Attached Figure Description

[0025] Figure 1 This is a front view showing the air shaft matching the width of the frame;

[0026] Figure 2 This is a front view of an easily detachable automotive film unwinding mechanism according to Embodiment 1;

[0027] Figure 3 This is one of the perspective views of an easy-to-disassemble car film unwinding mechanism according to Embodiment 1;

[0028] Figure 4 This is a second perspective view of an easily detachable car film unwinding mechanism according to Embodiment 1;

[0029] Figure 5 This is one of the perspective views of the air shaft of an easily detachable car film unwinding mechanism according to Embodiment 1;

[0030] Figure 6 This is a second perspective view of the air shaft of an easily detachable car film unwinding mechanism according to Embodiment 1.

[0031] Figure 7 This is a perspective view of the protective cover of the housing assembly of an easily detachable automotive film unwinding mechanism according to Embodiment 1.

[0032] The figure labels for each figure are as follows:

[0033] 1. Air expansion shaft; 11. Air expansion part; 12. Shaft body part; 121. First limiting step; 13. Extension shaft; 131. Second limiting step; 2. Frame; 21. First frame; 22. Second frame; 23. Opening; 24. Hand-tightening bolt; 3. Rotating mechanism; 31. First gear; 32. Second gear; 33. Third gear; 34. Drive assembly; 35. Mounting seat; 36. Open side; 4. Horizontal drive mechanism; 41. Fixed seat; 411. Slide groove; 42. Threaded rod; 43. Handwheel; 44. Slider; 5. First bushing; 51. Annular protrusion; 6. Second bushing; 7. Protective cover; 71. First horizontal part; 711. First connecting block; 72. Vertical part; 721. First notch; 73. Second horizontal part; 731. Second connecting block; 8. Flip cover; 81. Second notch. Detailed Implementation

[0034] 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.

[0035] Example 1

[0036] refer to Figures 1-7 A car film unwinding mechanism that is easy to disassemble is applicable to an air shaft 1. The air shaft 1 includes an air expansion part 11 and a shaft body part 12 connected to both ends of the air shaft 1. The shaft body part 12 is provided with a first limiting step 121. An extension shaft 13 is connected to one end of the shaft body part 12. The extension shaft 13 and the shaft body part 12 form a second limiting step 131.

[0037] The easily detachable car film unwinding mechanism includes a frame 2, and one end of the frame 2 along its length has two detachable first bushings 5. The first bushings 5 ​​are rotatably connected to the shaft body 12. One of the first bushings 5 ​​abuts against the first limiting step 121, and the other first bushing 5 is located between the first limiting step 121 and the second limiting step 131.

[0038] The frame 2 is provided with a rotating mechanism 3 for driving the air shaft 1 to rotate on one side along its width direction. The frame 2 is characterized by having a horizontal driving mechanism 4 on the other side along its width direction. A second bushing 6 is connected to the output end of the horizontal driving mechanism 4. The axis of the second bushing 6 extends along the width direction of the frame 2. The horizontal driving mechanism 4 is used to drive the second bushing 6 to move along the width direction of the frame 2. The second bushing 6 is used to be sleeved on the extension shaft 13 and abuts against the first limiting step 121.

[0039] In this design, the air shaft 1 is fitted with a roll of material. When installing the air shaft 1, firstly, a first bushing 5 is fitted onto the shaft body 12 and pressed against the first limiting step 121, and another bushing is fitted between the first limiting step 121 and the second limiting step 131. Then, the air shaft 1 is placed on the frame 2. Afterward, the worker drives the second bushing 6 to move along the width direction of the frame 2 through the horizontal drive mechanism 4, so that the second bushing 6 is fitted onto the extension shaft 13 and pressed against the second limiting step 131. In this way, the second bushing 6 can limit the air shaft 1. Then, the rotation mechanism 3 drives the air shaft 1 to rotate for unwinding. After unwinding is completed, the rotation mechanism 3 is stopped, and the worker controls the horizontal drive mechanism 4 to disengage the second bushing 6 from the extension shaft 13. In this way, the worker can remove the air shaft 1 and reinstall the roll of material on the air shaft 1. In this way, the air shaft 1 can be fixed and the disassembly is convenient.

[0040] Preferably, the frame 2 includes a first frame 21 and a second frame 22, the first frame 21 and the second frame 22 are connected, and an opening 23 is provided at one end along the length direction of the first frame 21 and the second frame 22; the two first bushings 5 ​​are respectively detachable in the two openings 23, the rotating mechanism 3 is provided on the side of the first frame 21 facing away from the second frame 22, and the horizontal drive mechanism 4 is provided on the side of the second frame 22 facing away from the first frame 21;

[0041] Both ends of the first bushing 5 are provided with annular protrusions 51, and the two annular protrusions 51 are respectively located on both sides of the opening 23.

[0042] Specifically, when limiting the air shaft 1, the horizontal drive mechanism 4 is controlled to drive the second bushing 6 to move in the width direction of the frame 2, so that the second bushing 6 is fitted on the extension shaft 13 and abuts against the second limiting step 131. Since the annular protrusion 51 is located at both ends of the first bushing 5 and on both sides of the opening 23, after the second bushing 6 abuts against the second limiting step 131, the horizontal drive mechanism 4 continues to drive the annular protrusion 51 of the first bushing 5 to abut against the sides of the first frame 21 and the second frame 22.

[0043] To remove the air shaft 1, control the horizontal drive mechanism 4 to disengage the second bushing 6 from the extension shaft 13, thus loosening the fixation on the air shaft 1, and then remove the air shaft 1.

[0044] In this embodiment, the rotating mechanism 3 includes a first gear 31, a second gear 32, and a mounting base 35. The first gear 31 is sleeved on the shaft portion 12, and the second gear 32 is disposed on one side along the length direction of the frame 2 and is used to mesh with the first gear 31.

[0045] The mounting base 35 is connected to one side of the frame 2. The side of the mounting base 35 facing the second gear 32 is an open side 36. A third gear 33 that meshes with the second gear 32 is provided inside the mounting base 35. A rotary drive assembly 34 is provided on the mounting base 35. The output end of the rotary drive assembly 34 is connected to the third gear 33. The drive assembly 34 is used to drive the third gear 33 to rotate.

[0046] The drive assembly 34 can be an electromagnetic clutch or a rotary motor.

[0047] Generally, the first bushing 5 is fitted onto the shaft body 12 and abuts against the first limiting step 131, which facilitates the limiting of the first bushing 5. Then, the air shaft is placed on the frame through the two first bushings 5, and the first gear 31 fitted on the air shaft 1 is meshed with the second gear 32. Then, the second bushing 6 is driven by the horizontal drive mechanism 4 to fit onto the extension shaft and abut against the second limiting step 131, and then the air shaft 1 is driven to rotate by the drive assembly 34 to unwind the roll material.

[0048] In this embodiment, a U-shaped protective cover 7 is also included. The open end of the protective cover 7 is connected to the side of the frame 2 where the second gear 32 is provided, and one side of the protective cover 7 is connected to the open side of the mounting base 35.

[0049] The side of the first frame 21, the protective cover 7 and the mounting base 35 cooperate to form an open receiving cavity on the right side, in which the first gear 31, the second gear 32 and the third gear 33 are all located;

[0050] The top of the protective cover 7 is hinged with a flap 8, which can be swung to close the open side 36 of the receiving cavity;

[0051] The protective cover 7 includes a first horizontal part 71, a vertical part 72 and a second horizontal part 73 connected in sequence. The free end of the first horizontal part 71 is provided with a first connecting block 711, which is connected to the frame 2 by bolts. The free end of the second horizontal part 73 is provided with a second connecting block 731, which is connected to the frame 2 by bolts. The flip cover 8 is hinged to the top of the first horizontal part 71.

[0052] Furthermore, after the air shaft 1 is installed, the worker can flip down the cover 8 hinged to the first horizontal part 71 to close the open side 36 of the receiving cavity to protect the second gear 32 and reduce dust entry; and the bolted connection makes it easy to disassemble and install the protective cover 7.

[0053] Preferably, the vertical part 72 is provided with a first notch 721 for the shaft part 12 to pass through, and the flip cover 8 is provided with a second notch 81. When the flip cover 8 is swung to close the open side 36 of the receiving cavity, the first notch 721 and the second notch 81 cooperate to form a waist-shaped groove.

[0054] Furthermore, the first notch 721 and the second notch 81 facilitate the removal of the air shaft 1 and prevent the flip cover 8 and the protective cover 7 from interfering with the installation of the air shaft 1.

[0055] In this embodiment, the horizontal drive mechanism 4 includes a fixed seat 41 and a threaded rod 42 disposed on the other side of the frame 2 along the width of the frame 2. The fixed seat 41 is provided with a sliding groove 411 and a slider 44 is provided in the sliding groove 411. The threaded rod 42 is rotatably connected in the sliding groove and threadedly connected to the slider 44.

[0056] One end of the threaded rod 42 extends away from the frame 2 and passes through the fixed seat 41. A handwheel 43 is provided at the end of the threaded rod 42 that passes through the fixed seat 41. The second bushing 6 is provided on the slider 44.

[0057] Specifically, after the first bushing 5 is installed on the shaft body 12 of the air expansion shaft 1 and placed in the two openings 23 respectively, the worker drives the threaded rod 42 to rotate by turning the handwheel 43, thereby driving the slider 44 to move along the width direction close to the frame 2, and then driving the second bushing 6 set on the slider 44 to move along the width direction of the frame 2, so that the second bushing 6 is fitted on the extension shaft 13;

[0058] To detach the second bushing 6 from the extension shaft 13, the control handwheel 43 is rotated in the opposite direction, driving the slider 44 to move in the width direction away from the frame 2, thus detaching the second bushing 6.

[0059] The frame 2 is screwed with hand-tightening bolts 24, which correspond one-to-one with the first bushing 5. The hand-tightening bolts 24 are used to lock the first bushing 5. The first bushing 5 can be locked and loosened by turning the hand-tightening bolts 24.

[0060] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements or modifications can be made without departing from the principle of the present utility model, and these improvements or modifications should also be considered within the protection scope of the present utility model.

Claims

1. An easy-to-disassemble automotive film unwinding mechanism, applicable to an air shaft, the air shaft including an air expansion part and a shaft body part connected to both ends of the air shaft, the shaft body part being provided with a first limiting step, and an extension shaft being connected to one end of one of the shaft body parts, the extension shaft and the shaft body part forming a second limiting step; The easily detachable car film unwinding mechanism includes a frame, and one end of the frame along its length has two detachable first bushings. The first bushings are rotatably connected to the shaft body, one of the first bushings abuts against a first limiting step, and the other first bushing is located between the first limiting step and the second limiting step. The frame is provided with a rotating mechanism for driving the air shaft to rotate on one side along its width direction, characterized in that, The frame is provided with a horizontal drive mechanism on the other side along its width direction. A second bushing is connected to the output end of the horizontal drive mechanism. The axis of the second bushing extends along the width direction of the frame. The horizontal drive mechanism is used to drive the second bushing to move along the width direction of the frame. The second bushing is used to be sleeved on the extension shaft and abut against the first limiting step.

2. The easily detachable automotive film unwinding mechanism according to claim 1, characterized in that, The rotating mechanism includes a first gear, a second gear, and a mounting base. The first gear is sleeved on the shaft body, and the second gear is located on one side along the length of the frame and is used to mesh with the first gear. The mounting base is connected to one side of the frame, and the side of the mounting base facing the second gear is an open side. A third gear that meshes with the second gear is provided inside the mounting base. A rotary drive assembly is provided on the mounting base, and the output end of the rotary drive assembly is connected to the third gear. The drive assembly is used to drive the third gear to rotate.

3. The easily detachable automotive film unwinding mechanism according to claim 2, characterized in that, It also includes a U-shaped protective cover, the open end of which is connected to the side of the frame where the second gear is located, and one side of the protective cover is connected to the open side of the mounting base. The side of the frame, the cover and the mounting base cooperate to form an open receiving cavity on the right side, in which the first gear, the second gear and the third gear are all located; The top of the shield is hinged to a flap, which can be swung to close the open side of the receiving cavity.

4. The easily detachable automotive film unwinding mechanism according to claim 3, characterized in that, The protective cover includes a first horizontal part, a vertical part, and a second horizontal part connected in sequence. The free end of the first horizontal part is provided with a first connecting block, which is bolted to the frame. The free end of the second horizontal part is provided with a second connecting block, which is bolted to the frame. The flip cover is hinged to the top of the first horizontal part.

5. The easily detachable automotive film unwinding mechanism according to claim 4, characterized in that, The vertical part is provided with a first notch for the shaft body to pass through, and the flip cover is provided with a second notch. When the flip cover is swung to close the open side of the receiving cavity, the first notch and the second notch cooperate to form a waist-shaped groove.

6. The easily detachable automotive film unwinding mechanism according to claim 1, characterized in that, The horizontal drive mechanism includes a fixed seat and a threaded rod disposed on the other side of the frame along its length. The fixed seat is provided with a sliding groove, and a slider is provided in the sliding groove. The threaded rod is rotatably connected in the sliding groove and threadedly connected to the slider. One end of the threaded rod extends away from the frame and passes through the fixed seat. A handwheel is provided at the end of the threaded rod that passes through the fixed seat. The second bushing is mounted on the slider.

7. The easily detachable automotive film unwinding mechanism according to claim 1, characterized in that, The frame is screwed with hand-tightening bolts, which correspond one-to-one with the first bushing and are used to lock the first bushing.

8. The easily detachable automotive film unwinding mechanism according to claim 1, characterized in that, The frame includes a first frame and a second frame, the first frame and the second frame are connected, and an opening is provided at one end along the length direction of the first frame and the second frame; two first bushings are detachably connected to the two openings respectively, the rotating mechanism is located on the side of the first frame away from the second frame, and the horizontal drive mechanism is located on the side of the second frame away from the first frame.

9. The easily detachable automotive film unwinding mechanism according to claim 8, characterized in that, Both ends of the first bushing are provided with annular protrusions, and the two annular protrusions are respectively located on both sides of the opening.

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