CN217022150U - Novel power shaft assembly for sunshade curtain and sunshade curtain system - Google Patents
Novel power shaft assembly for sunshade curtain and sunshade curtain system Download PDFInfo
- Publication number
- CN217022150U CN217022150U CN202121307438.6U CN202121307438U CN217022150U CN 217022150 U CN217022150 U CN 217022150U CN 202121307438 U CN202121307438 U CN 202121307438U CN 217022150 U CN217022150 U CN 217022150U
- Authority
- CN
- China
- Prior art keywords
- shaft
- coil spring
- sleeve
- rotating shaft
- outer rotating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides a power shaft assembly for a novel sunshade and a sunshade system, wherein the power shaft assembly comprises an outer rotating shaft for mounting a curtain, a coil spring arranged in the outer rotating shaft, and a first end block and a second end block which are respectively arranged at two ends of the outer rotating shaft; at a first end block: one end of the outer rotating shaft and one end of the coil spring extend to the first end block, the coil spring is fixedly matched with the first end block in the rotating direction of the coil spring, and the outer rotating shaft is matched with the coil spring in a rotating mode; at the second end block: the other end of the outer rotating shaft extends to the second end block and is rotatably arranged on the second end block, and the other end of the coil spring does not extend to the second end block and is fixedly connected with the outer rotating shaft. The end of the coil spring, which is far away from the first end block, does not extend to the end of the outer rotating shaft, namely, the coil spring is arranged on one side of the outer rotating shaft, so that the length of the coil spring is shorter, the coil spring can uniformly disperse pre-tightening torsion on each individual coil when releasing force, the operation is more stable, and the service life of the coil spring is longer.
Description
Technical Field
The utility model relates to the field of automobile skylights, in particular to a novel power shaft assembly for a sunshade and a sunshade system comprising the power shaft assembly.
Background
At present, many middle and high-end cars are equipped with panoramic skylights, and comprise a sunshade curtain system which can be electrically operated to open and close in addition to glass with the functions of opening, raising and the like. The sunshade screen system realizes the functions of passing and isolating the light source outside the vehicle through the unfolding and the closing of the curtain cloth, ensures the integral consistency of the interior trim and improves the aesthetic degree in the vehicle.
Generally, a handle is fixedly arranged at the front end of a curtain cloth of the sun-shading curtain system in a mutual bonding mode, and the left side and the right side of the handle are connected with a cable system of a skylight; the stay cable system runs in a sliding groove set in the skylight guide rail under the driving of the skylight motor and drives the handle to move upwards in the front-back direction, so that the sunshade curtain system is driven to run. Specifically, when the sunshade screen is opened, the handle is driven by the inhaul cable system to move towards the rear of the vehicle, and at the moment, the curtain cloth needs to be timely driven by the winding mechanism in the sunshade screen system to be rewound, so that the abnormal problems of accumulation, folding, even blocking and the like of the curtain cloth due to untimely winding are prevented.
Furthermore, a winding mechanism in the sunshade curtain system is usually a power shaft assembly with a built-in coil spring, and stable power torque output is provided through the deformation of the coil spring, so that the reliability of opening and closing of the sunshade curtain system is ensured. At present, the cord fabric furling power shaft assemblies widely used in the market are generally divided into linear power shaft assemblies and curved power shaft assemblies.
The center point of the curve type power shaft assembly has partial height difference compared with two ends of the shaft, and the height difference is similar to the arch height of a car roof. Therefore, the central line of the power shaft assembly needs to be set to be consistent with the modeling curve of the vehicle roof, so that the interior roof lining can be further ensured to be designed into an arch structure with larger curvature, the head space of passengers in the back row is effectively improved, and the overall consistency and the attractiveness of the interior modeling of the vehicle are improved. However, such a curve type power shaft assembly has problems of complicated structure, many parts, complicated process, and the like, and also has appearance problems that the cord fabric is easily squeezed at the time of winding, and wrinkles are generated in the cord fabric.
Compared with a curve type power shaft assembly, the linear type power shaft assembly has the characteristics of simple structure and stable effect. However, the existing linear power shaft assemblies are designed into an integral type coil spring system from left to right, so that the coil spring needs to bear too large tensile tension, and meanwhile, the pre-tightening torsion cannot be uniformly dispersed to each individual coil during rewinding and releasing due to too long coil spring, so that the service life of the coil spring is influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a novel power shaft assembly for a sun shade that has a shorter, more stable, and longer life for the coil spring by providing a one-sided coil spring.
In order to achieve the purpose, the utility model provides a power shaft assembly for a novel sunshade curtain, which comprises an outer rotating shaft for mounting a curtain cloth, a coil spring arranged in the outer rotating shaft, and a first end block and a second end block which are respectively arranged at two ends of the outer rotating shaft along the axial direction of the outer rotating shaft;
at the first end block: one end of the outer rotating shaft and one end of the coil spring both extend to the first end block, the coil spring is fixedly matched with the first end block in the rotating direction of the coil spring, and the outer rotating shaft is matched with the coil spring in a rotating mode;
at the second end block: the other end of the outer rotating shaft extends to the second end block and is rotatably arranged on the second end block, and the other end of the coil spring does not extend to the second end block and is fixedly connected with the outer rotating shaft.
Furthermore, the power shaft assembly further comprises a fixing shaft sleeve and a middle fixing sealing sleeve, the fixing shaft sleeve is fixedly connected to one end of the coil spring and fixedly matched with the first end block in the rotating direction of the coil spring, one end, close to the first end block, of the outer shaft is rotatably sleeved on the periphery of the fixing shaft sleeve, and the middle fixing sealing sleeve is fixedly connected to the other end of the coil spring and fixedly connected with the outer shaft.
Furthermore, a square adapter is fixedly arranged on the first end block, a square clamping hole is formed in the fixing shaft sleeve, and the square adapter is inserted in the square clamping hole and is in clearance fit with the square clamping hole.
Furthermore, a first spiral connecting section is arranged on the fixed shaft sleeve and is in spiral fit with a coil at one end of the coil spring; and a second spiral connecting section is arranged on the middle fixing sleeve and is in spiral fit with the coil at the other end of the coil spring.
Furthermore, a shaft fixing section is arranged on the middle fixing sleeve, a plurality of inward-recessed concave parts are arranged at the shaft fixing section of the outer rotating shaft, a plurality of convex parts and at least one clamping groove formed between every two adjacent convex parts are arranged on the outer peripheral surface of the shaft fixing section, and the concave parts are fixedly clamped with the clamping grooves or the convex parts are abutted against the concave parts and are fixed in a tight fit manner.
Furthermore, the power shaft assembly further comprises a first shaft sleeve and a second shaft sleeve which are respectively fixed at two ends of the outer rotating shaft, a supporting shaft part is fixedly arranged on the second end block, one end of the outer rotating shaft is rotatably arranged on the fixed shaft sleeve through the first shaft sleeve, and the other end of the outer rotating shaft is rotatably arranged on the supporting shaft part through the second shaft sleeve.
Furthermore, both ends of the outer rotating shaft are provided with limiting notches, and the peripheral surfaces of the first shaft sleeve and the second shaft sleeve are fixedly provided with limiting bosses clamped in the limiting notches.
Furthermore, the outer rotating shaft and the first shaft sleeve as well as the outer rotating shaft and the second shaft sleeve are tightly matched and fixed; and a plurality of convex ribs which are circumferentially arranged are fixedly arranged on the outer peripheral surfaces of the first shaft sleeve and the second shaft sleeve.
Further, the inner peripheral surfaces of the first shaft sleeve and the second shaft sleeve are coated with lubricating oil.
Furthermore, the power shaft assembly further comprises a locking pin shaft, the fixed shaft sleeve and the first shaft sleeve are respectively provided with a communicated pin hole, and the locking pin shaft is detachably inserted in the pin holes of the fixed shaft sleeve and the first shaft sleeve.
Furthermore, the coil spring, the fixed shaft sleeve and the middle fixed sealing sleeve are assembled to form an independent power shaft sub-assembly.
Further, the power shaft subassembly further comprises a rubber sleeve arranged between the outer rotating shaft and the coil spring.
Furthermore, the thickness of the rubber sleeve is 1.5 mm-2.5 mm, and the outer diameter of the rubber sleeve is 9 mm-12 mm.
Furthermore, the power shaft sub-assembly further comprises a positioning mandrel penetrating through the interior of the coil spring, the positioning mandrel is parallel to the outer rotating shaft, and two ends of the positioning mandrel are respectively inserted into the fixed shaft sleeve and the middle fixed sleeve in an abutting mode.
Further, the length of the coil spring is 30% -90% of the length of the outer rotating shaft.
Furthermore, the thickness of the outer rotating shaft is 0.8 mm-3 mm, and the outer diameter of the outer rotating shaft is 10 mm-17 mm.
Further, the diameter of the steel wire forming the coil spring is 0.6 mm-1.5 mm, and the outer diameter of the coil spring is 8 mm-10 mm.
The application also provides a sunshade curtain system, which comprises a curtain cloth, a power mechanism for driving the curtain cloth to be opened or rewound, and the power shaft assembly, wherein the inner edge of the curtain cloth is fixed with the outer rotating shaft, and the curtain cloth is wound on the outer rotating shaft.
As described above, the power shaft assembly for the novel sunshade and the sunshade system according to the present invention have the following advantages:
in the application, when the curtain cloth is opened or rewound, an external power mechanism acts on the curtain cloth, the curtain cloth drives the outer rotating shaft to rotate together, one end of the coil spring is fixed in the rotating direction of the coil spring, and the other end of the coil spring rotates together with the outer rotating shaft, so that the coil spring is in a deformation stress state, namely, the coil spring stores energy; then, in the other reverse process of the curtain cloth, an external power mechanism does not act on the curtain cloth, the coil spring releases force and provides reverse torque, the coil spring drives the outer rotating shaft to reversely rotate together until the coil spring resets, and the curtain cloth is also driven to reset through the outer rotating shaft. Thus, the curtain cloth is driven to be opened or rewound.
In particular, one end of the coil spring, which is far away from the first end block, does not extend to the second end block, that is, one end of the coil spring, which is far away from the first end block, does not extend to the end of the outer rotating shaft, or the coil spring is arranged on only one side of the outer rotating shaft, so that the length of the coil spring is shorter, and the tensile tension force borne by the coil spring is relatively reduced, so that the coil spring can uniformly distribute the pre-tightening torsion force to each individual coil when releasing the force, the operation is more stable, and the service life of the coil spring is longer.
In addition, after the single side of the coil spring is arranged, the length and the outer diameter of the outer rotating shaft are not influenced by the length and the wire diameter of the coil spring, so that the outer rotating shaft can be freely extended, the universality and the expandability are very good, and the device plays a very good role in large-range application to different industrial skylight projects.
Drawings
Fig. 1 is a schematic structural view of a power shaft assembly for the novel sunshade curtain of the present application.
Fig. 2 is a top view of fig. 1.
Fig. 3 is an exploded view of fig. 1.
Fig. 4 is a cross-sectional view of fig. 2 at the central axis of the outer rotary shaft.
FIG. 5 is a schematic structural diagram of the power shaft assembly of FIG. 1.
Fig. 6 is a schematic view, exploded, of the connection of the first end block, the fixed boss and the coil spring in the present application.
Fig. 7 is a schematic view, in exploded view, of the connection of the second end block and the outer spindle in the present application.
Fig. 8 is a schematic view, exploded, of the connection of a coil spring and a fixed bushing in the present application.
Fig. 9 is a schematic view, exploded, of the connection of the coil spring to the intermediate fixed enclosure in the present application.
Fig. 10 is a schematic connection diagram of the external rotating shaft, the first shaft sleeve, the fixed shaft sleeve and the second shaft sleeve in the present application.
Fig. 11 is an exploded view of fig. 10 without the fixed boss.
Fig. 12 is a cross-sectional view of the outer rotor shaft and intermediate stationary sleeve of fig. 2 at a-a.
FIG. 13 is a schematic structural view of the power shaft assembly for the new sunshade of the present application when mounting the curtain cloth.
FIG. 14 is a schematic structural view of the power shaft assembly for the novel sunshade of the present application when locked after being pre-tightened.
Fig. 15 is a sectional view of fig. 14 at the center axis of the outer rotary shaft.
Description of the element reference
10 cord fabric
20 outer rotating shaft
21 depressed part
22 limiting notch
30 coil spring
40 first end block
41 Square adapter
50 second end block
51 support shaft part
60 fixed shaft sleeve
61 square clamping hole
62 first spiral connection section
70 middle fixing sleeve
71 second spiral connecting section
72 shaft fixing section
73 convex part
74 card slot
75 Square connecting groove
80 first shaft sleeve
90 second shaft sleeve
91 spacing boss
92 convex rib
110 locking pin
120 pin hole
130 rubber sleeve
140 positioning core shaft
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure of the present invention.
It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are used for descriptive purposes only and are not intended to limit the scope of the present invention, and the relative relationship between the terms may be changed or adjusted without substantial technical change.
The application relates to the field of automobile skylights, provides a power shaft assembly for a novel sunshade and a sunshade system comprising the power shaft assembly, and the sunshade system is applied to automobile skylights.
As shown in fig. 1 to fig. 3, the power shaft assembly for the novel sunshade curtain according to the present application includes an outer shaft 20 for mounting the curtain cloth 10, a coil spring 30 disposed inside the outer shaft 20, and a first end block 40 and a second end block 50 respectively disposed at two ends of the outer shaft 20 along an axial direction of the outer shaft 20, wherein the outer shaft 20 is parallel to the coil spring 30, and the outer shaft 20 is a hollow shaft passing through in the axial direction. For convenience of description, in the following embodiments, the axial direction of the outer rotating shaft 20 is defined as a left-right direction, and the first end block 40 and the second end block 50 are respectively disposed at the left end and the right end of the outer rotating shaft 20, and the left-right positions of the first end block 40 and the second end block 50 may be interchanged. The following description will be given by taking the first end block 40 disposed at the left end of the external rotation shaft 20 and the second end block 50 disposed at the right end of the external rotation shaft 20 as an example, and explaining a preferred embodiment of the power shaft assembly for the novel sunshade; in this regard, the first end block 40 is the left end block and the second end block 50 is the right end block.
Further, as shown in fig. 1 to 4, the present application relates to a power shaft assembly in which the left end of the coil spring 30 is fixed and non-rotatable in the rotation direction thereof, and the left end of the coil spring 30 is adjacent to the left end of the outer spindle 20; the right end of the coil spring 30 is rotatable and located inside the outer shaft 20, i.e., the right end of the coil spring 30 does not extend rightward to the right end of the outer shaft 20. Specifically, as shown in fig. 1 to 4, at the first end block 40 on the left side of the power shaft assembly: both the left end of the outer spindle 20 and the left end of the coil spring 30 extend leftward to the first end block 40; the left end of the coil spring 30 is fixedly fitted with the first end block 40 in the rotational direction of the coil spring 30 so that the left end of the coil spring 30 is fixed; the left end of the outer shaft 20 is rotatably engaged with the left end of the coil spring 30, and the two can rotate relatively. At the second end block 50 on the right side of the power shaft assembly: the right end of the outer shaft 20 extends to the second end block 50 to the right and is rotatably installed at the second end block 50, and the right end of the coil spring 30 does not extend to the second end block 50 to the right, so that the right end of the coil spring 30 is located inside the outer shaft 20 and is fixedly connected with the outer shaft 20, and the length of the coil spring 30 is smaller than that of the outer shaft 20, or the coil spring 30 is only arranged at the left side of the outer shaft 20.
Further, as shown in fig. 13, the sunshade system according to the present application includes a curtain cloth 10, a power mechanism for driving the curtain cloth 10 to be opened or rewound, and the power shaft assembly, wherein an inner edge of the curtain cloth 10 is fixed to an outer circumferential surface of the outer shaft 20, and the curtain cloth 10 is wound around the outer shaft 20. When the power mechanism is used for driving the curtain cloth 10 to be opened, in the opening process of the curtain cloth 10, the power mechanism provides power, the coil spring 30 stores energy, and the power for rewinding the curtain cloth 10 is provided by the force released by the coil spring 30; or, when the power mechanism is used for driving the curtain cloth 10 to be rewound, the power mechanism provides power and the coil spring 30 stores energy during the process of rewinding the curtain cloth 10, and the power for opening the curtain cloth 10 is provided by the force released by the coil spring 30. The following description will be made of the operation of the powered axle assembly and shade system of the present application, with reference to a powered mechanism for driving the opening of the shade 10.
When the shade system is in the initial state, the shade 10 is in the retracted state. When the curtain cloth 10 needs to be opened, the power mechanism acts and provides a power source, the power mechanism pulls the outer edge of the curtain cloth 10 to move towards the front of the vehicle along the axial direction vertical to the outer rotating shaft 20, and then the curtain cloth 10 drives the outer rotating shaft 20 to rotate; since the left end of the coil spring 30 is fixed and does not rotate with the outer shaft 20, but the right end of the coil spring 30 is fixed with the outer shaft 20 and rotates with the outer shaft 20, so that the coil spring 30 is in a state of deforming upper force, and the coil spring 30 is charged with energy. Then, when the curtain cloth 10 needs to be folded, an external power mechanism does not act on the curtain cloth 10, the coil spring 30 releases force and provides reverse torque, the right end of the coil spring 30 rotates reversely to drive the outer rotating shaft 20 to rotate reversely together, until the coil spring 30 resets, the outer rotating shaft 20 drives the curtain cloth 10 to rewind, and the curtain cloth 10 is wound on the outer rotating shaft 20 and returns to the initial state. In this manner, the opening or rewinding drive of the curtain 10 is achieved. In particular, the coil spring 30 is arranged on only one left side of the outer rotating shaft 20, so that the length of the coil spring 30 is short, and the tensile tension force borne by the coil spring 30 is relatively reduced, so that the coil spring 30 can uniformly distribute the pre-tightening torsion force to each individual coil when releasing the force, the operation is more stable, and the service life of the coil spring 30 is longer. In addition, after the coil spring 30 is arranged on one side, the length and the outer diameter of the outer rotating shaft 20 are not influenced by the length and the wire diameter of the coil spring 30, so that the outer rotating shaft 20 can be freely extended, the universality and the expandability are very good, and the effect of using different industrial skylight projects in a large range is very good.
Further, the outer shaft 20 is made of aluminum alloy or other metal materials, the thickness of the outer shaft 20 is 0.8mm to 3mm, preferably 1mm to 2mm, and the outer diameter of the outer shaft 20 is 10mm to 17mm, preferably 12mm to 17mm, so that the whole curtain cloth 10 after being rolled maintains a small packaging space, and meanwhile, more head space can be provided for passengers of the whole vehicle. The length of the coil spring 30 is 30% to 90%, preferably 60% to 70%, and particularly preferably 65% of the length of the outer shaft 20. The spool is wound in the form of a coil spring from a wire coil, the wire constituting the coil spring 30 has a diameter of 0.6mm to 1.5mm, preferably 0.7mm to 1.1mm, and particularly preferably 0.9mm to 1.0mm, and the entire coil spring 30 has an outer diameter of 8mm to 10 mm.
Further, as shown in fig. 3 and 4, the power shaft assembly further includes a fixed bushing 60 and an intermediate fixed sleeve 70, the fixed bushing 60 is fixedly connected to the left end of the coil spring 30, the fixed bushing 60 is also fixedly engaged with the first end block 40 in the rotation direction of the coil spring 30, that is, the left end of the coil spring 30 is fixedly engaged with the first end block 40 in the rotation direction of the coil spring 30 through the fixed bushing 60, so as to prevent the left end of the coil spring 30 from rotating; the left end of the outer rotating shaft 20 is rotatably sleeved on the periphery of the fixed shaft sleeve 60; the middle fixing sleeve 70 is fixedly connected to the right end of the coil spring 30 and fixedly connected to the outer shaft 20, that is, the right end of the coil spring 30 is fixed to the outer shaft 20 through the middle fixing sleeve 70, so that the torque applied to the outer shaft 20 can be well transmitted to the reel, and the return torque provided by the reel can be well transmitted to the outer shaft 20, thereby realizing the integral rotation action, and finally achieving the function of winding or releasing the curtain cloth 10 on the power shaft assembly, so as to realize the action of opening and closing the curtain cloth by passengers on the whole vehicle.
Preferably, the connection structure between the first end block 40 and the fixed bushing 60 is: as shown in fig. 4 and 6, a square adaptor 41 extending rightward is integrally disposed on the right end surface of the first end block 40, a square fastening hole 61 is formed in the fixed sleeve 60, and the square adaptor 41 is inserted into the square fastening hole 61, so that the fixed sleeve 60 and the first end block 40 are fixedly engaged in the rotation direction of the coil spring 30, and the fixed sleeve 60 is prevented from rotating, and the left end of the coil spring 30 is also fixed, so that the left end of the coil spring 30 is prevented from rotating. Preferably, the square adapter 41 is in clearance fit with the square locking hole 61, and the clearance between the square adapter and the square locking hole 61 in the radial direction of the fixed shaft sleeve 60 is within about 2mm, so that the power shaft assembly can be adjusted in the radial direction in a self-adaptive manner, and the curtain cloth 10 is prevented from being wrinkled and affecting the appearance of the curtain cloth 10. The fixed connection structure between the fixed shaft sleeve 60 and the left end of the coil spring 30 is as follows: as shown in fig. 8, a right-end portion of the fixing boss 60 is a first screw coupling section 62, and the first screw coupling section 62 is screw-engaged with the coil at the left end of the coil spring 30. The fixed connection structure between the middle fixed sleeve 70 and the right section of the coil spring 30 is as follows: as shown in fig. 9, the left end portion of the middle fixing cuff 70 is a second screw coupling section 71, and the second screw coupling section 71 is screw-fitted with the coil at the right end of the coil spring 30.
Further, the first spiral connecting section 62 of the right section of the fixing sleeve 60 and the second spiral connecting section 71 of the left section of the middle fixing sleeve 70 are both spiral structures, the outer peripheral surfaces of the spiral structures are provided with a plurality of grooves, and the shapes of the grooves are complementary to the shapes of the coils at the left end and the right end of the coil spring 30, so that the coil spring 30 is in anti-rotation connection with the spiral structures in a shape fit manner in one rotation direction. This has the following advantages: 1. the two ends of the coil spring 30 do not need to be specially designed or the end coils of the coil spring 30 are not bent, so that the coil spring 30 is prevented from being broken when torque is transmitted due to the fact that weakened parts can be formed at the positions when the end coils of the coil spring 30 are bent, in other words, the torque can be transmitted from one end coil to the other end coil of the coil spring 30 reliably; 2. when the coil spring 30 is pre-tightened in the wrong direction, the coil of the coil spring 30 is out of the helical structure, but the coil spring 30 cannot be damaged; 3. the coil spring 30 is thus also connected in its axial direction immovably to the at least one spiral until a limit force is reached; 4. the first and second spiral connecting pieces 62 and 71 can rotate relative to each other, and therefore, the coil spring 30 can bear the torque acting on the spiral structure and accumulate the potential energy caused thereby; 5. the mounting mode of spiral joint is simple easy to operate.
In particular, the fixed connection structure between the middle fixing sleeve 70 and the outer rotating shaft 20 is: as shown in fig. 9 and 12, the right section of the middle fixing sleeve 70 is a shaft fixing section 72, the outer rotating shaft 20 is provided with three recesses 21 at the shaft fixing section 72, the recesses 21 are inwardly recessed in the radial direction of the outer rotating shaft 20, the outer circumferential surface of the shaft fixing section 72 is provided with three protrusions 73, and a locking groove 74 is formed between two adjacent protrusions 73 of the three protrusions 73. When the middle fixing cover 70 is assembled in the inner portion of the outer rotating shaft 20, as shown in fig. 12, the concave portion 21 of the outer rotating shaft 20 is engaged and fixed with the engaging groove 74 of the middle fixing cover 70, and the convex portion 73 of the middle fixing cover 70 is abutted against the inner circumferential surface of the outer rotating shaft 20 and is tightly fitted and fixed, thereby forming a rigid connection between the outer rotating shaft 20 and the middle fixing cover 70; alternatively, the middle fixing cover 70 in fig. 12 is rotated by an angle, the convex portion 73 of the middle fixing cover 70 abuts against the concave portion 21 of the outer rotating shaft 20 and is fixed in a tight fit manner, but the concave portion 21 of the outer rotating shaft 20 is not engaged with the engaging groove 74 of the middle fixing cover 70, so that a rigid connection between the outer rotating shaft 20 and the middle fixing cover 70 can be formed; alternatively, the recess 21 of the outer shaft 20 is engaged and fixed with the engaging groove 74 of the middle fixing cover 70, and at least one protrusion 73 of the middle fixing cover 70 is abutted and tightly fitted and fixed with at least one recess 21 of the outer shaft 20, thereby forming a rigid connection between the outer shaft 20 and the middle fixing cover 70. The middle fixing sleeve 70 and the outer rotating shaft 20 are fixed by adopting the structure, so that the outer rotating shaft 20 is only provided with three concave parts 21 at the middle fixing sleeve 70, and the outer rotating shaft 20 is convenient to process. The middle fixing cover 70 is made of plastic, and the middle fixing cover 70 is an integral molding.
Further, as shown in fig. 3, 4, and 7, the power shaft assembly further includes a first shaft sleeve 80 and a second shaft sleeve 90 respectively fixed at the left and right ends of the outer rotating shaft 20, where the first shaft sleeve 80 is a left shaft sleeve, and the second shaft sleeve 90 is a right shaft sleeve; a support shaft portion 51 extending in the leftward axial direction is integrally provided on the left end surface of the second end block 50; one end of the outer rotating shaft 20 is rotatably mounted on the fixed shaft sleeve 60 through a first shaft sleeve 80, so that the left end of the outer rotating shaft 20 is rotatably matched with the fixed shaft sleeve 60; the other end of the outer shaft 20 is rotatably mounted to the support shaft 51 through a second bushing 90, so that the right end of the outer shaft 20 is rotatably engaged with the second end block 50.
Preferably, as shown in fig. 10 and 11, the outer shaft 20 has a limiting notch 22 at each of the left and right ends, and the first shaft sleeve 80 and the second shaft sleeve 90 have a limiting boss 91 fixedly fastened to the limiting notch 22 at the outer circumferential surface thereof to prevent the outer shaft 20 and the first shaft sleeve 80 and the outer shaft 20 and the second shaft sleeve 90 from rotating. The outer rotating shaft 20 and the first shaft sleeve 80 as well as the outer rotating shaft 20 and the second shaft sleeve 90 are tightly matched and fixed; moreover, a plurality of circumferentially arranged ribs 92 are fixedly arranged on the outer peripheral surfaces of the first shaft sleeve 80 and the second shaft sleeve 90, so that the tight fit connection between the outer rotating shaft 20 and the first shaft sleeve 80 and the tight fit connection between the outer rotating shaft 20 and the second shaft sleeve 90 are almost gapless, the reliability of the fixed connection is improved, and the disturbing noise generated when the rotating direction of the outer rotating shaft 20 changes can be reduced. The first and second bushings 80, 90 are both made of plastic.
Further, as shown in fig. 14 and 15, the power shaft assembly further includes a locking pin 110, a pin hole 120 is formed in the fixed bushing 60 and the first bushing 80, and the locking pin 110 is detachably inserted into the pin hole 120 of the fixed bushing 60 and the first bushing 80. In the process that the external rotating shaft 20 drives the coil spring 30 to rotate and pre-stresses the coil spring 30, the locking pin shaft 110 is not inserted into the pin holes 120 of the fixed shaft sleeve 60 and the first shaft sleeve 80; after the pre-tightening of the coil spring 30 is completed, the locking pin 110 is inserted into the pin holes 120 of the fixed sleeve 60 and the first sleeve 80 to restrict the rotation of the outer shaft 20, thereby maintaining the pre-tightened state of the coil spring 30 at this time.
Further, as shown in fig. 5, the coil spring 30, the fixed sleeve 60 and the intermediate fixed cover 70 are assembled to form a separate power shaft subassembly, which is disposed only at the left side of the outer rotary shaft 20, in a single-sided arrangement, and is used to provide the restoring torque. In addition, the axial length of the coil spring 30 is fixed, so that the length of the power shaft sub-assembly is relatively fixed, and the whole body can be universally used for the outer rotating shafts 20 with different lengths.
Preferably, as shown in fig. 4 and 5, the power shaft sub-assembly further includes a rubber sleeve 130 disposed between the outer shaft 20 and the coil spring 30, wherein the rubber sleeve 130 is a hollow tube penetrating from left to right and is disposed outside the coil spring 30 to prevent vibration, friction and noise. Preferably, the thickness of the rubber bushing 130 is 1.5mm to 2.5mm, and the outer diameter of the rubber bushing 130 is 9mm to 12 mm. The rubber sleeve 130 is made of PVC, PES and other rubber or soft materials, and has temperature resistance and dimensional stability. The power shaft sub-assembly further comprises a positioning mandrel 140 penetrating through the coil spring 30, the positioning mandrel 140 is parallel to the outer rotating shaft 20, and two ends of the positioning mandrel 140 are respectively inserted and abutted in the fixed shaft sleeve 60 and the middle fixed sleeve 70.
Further, the inner circumferential surfaces of the first bushing 80 and the second bushing 90 are coated with lubricating oil, the inner circumferential surface and the outer circumferential surface of the rubber sleeve 130 are coated with lubricating oil, and the surface of the coil spring 30 is coated with grease to reduce friction and reduce noise.
In summary, the assembly method of the power shaft assembly with the above structure includes the following steps, which mainly includes assembling the internal power shaft sub-assembly, and then assembling the power shaft sub-assembly into the external shaft 20:
s1, fixing the shaft sleeve 60 and the middle fixing sleeve 70 at the left and right ends of the coil spring 30 in a screw clamping way respectively;
s2, uniformly spraying a layer of grease on the surface of the coil spring 30;
s3, sleeving the rubber sleeve 130 outside the coil spring 30, and uniformly spraying a layer of grease on the inner circumferential surface and the outer circumferential surface of the rubber sleeve 130; thus, the power shaft sub-assembly is assembled;
s4, plugging the power shaft sub-assembly into the outer rotating shaft 20, wherein the first shaft sleeve 80 and the second shaft sleeve 90 are assembled on the outer rotating shaft 20 before, and the concave part 21 is not machined on the outer rotating shaft 20;
s5, the external mounting mechanism extends into the outer shaft 20 and is clamped with the square connecting groove 75 on the right end face of the middle fixing sleeve 70, then the external mounting mechanism stretches the middle fixing sleeve 70 and the right end of the coil spring 30 together to a certain fixed position of the outer shaft 20, and three concave parts 21 are generated on the outer shaft 20 through the action of external force, so that the middle fixing sleeve 70 is fixed on the outer shaft 20;
s5, pre-tensioning inner coil spring 30: rotating the fixed sleeve 60 at the left end of the coil spring 30 for a certain fixed number of turns to accumulate enough elasticity inside the coil spring 30 to store enough rotation torque, wherein the pre-tightening state just corresponds to the state when the sunshade screen system is completely unfolded; when the sunshade curtain system starts to be retracted, the rotation torque stored in the power shaft assembly starts to be released so as to provide auxiliary retraction power of the sunshade curtain system, and the problems that the sunshade curtain fails to function or the surface of the curtain cloth 10 is wrinkled due to insufficient retraction power are solved;
s6, inserting a locking pin shaft 110 into the pin holes 120 of the fixed shaft sleeve 60 and the first shaft sleeve 80, and locking the state of the pre-tightened power shaft assembly; to this end, the power shaft assembly is assembled before being mounted on the sunroof of the automobile, as shown in FIG. 10
Further, when the sunshade curtain system operates to the foremost end and the pulling-out amount of the curtain cloth 10 is the largest, the deformation amount of the coil spring 30 is the largest, the maximum rewinding torque is provided, and the rewinding force of the power shaft assembly is the largest; when the curtain cloth 10 is rolled up, the coil spring 30 gradually releases force, and the design effectively ensures that the back-rolling torque output by the coil spring 30 is matched with system friction, the dead weight of the curtain cloth 10 and other system loads. At the moment when the power shaft assembly starts to rotate, the system needs to overcome static friction, and at the moment, the coil spring 30 provides the maximum rewinding torque, so that part of internal resistance of the system is effectively counteracted, smooth rewinding of the sun-shading curtain is realized, and the stability of system load and motor running current at the moment of rewinding of the sun-shading curtain is ensured; when the shade system is operated to the rear most end, the amount of deformation of the coil spring 30 is minimized, providing the least amount of rollback torque.
In conclusion, the power shaft assembly belongs to a linear power shaft system, and the single-side power shaft sub-assembly structure is adopted, so that the coil spring 30 is shorter, more stable and longer in service life, the number of parts is saved, and the product cost is reduced. Meanwhile, because the power shaft sub-assembly at the middle end can be fixed to be a standard part structure, the requirement of different finished automobile widths can be met by changing the lengths of different outer rotating shafts 20, and mistake proofing can be performed; meanwhile, the requirement of different reel natural frequencies can be solved by changing the diameter of the outer rotating shaft 20. In conclusion, the design of the utility model ensures that the length and the outer diameter of the power shaft assembly are not influenced by the length and the wire diameter of the coil spring 30 and can be freely extended, thereby achieving very good universality and expandability, meeting all performance requirements of the skylight roller shutter system, having good stability and reliability and playing a very good role in being used in different industrialized skylight projects in a large range.
Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (18)
1. The utility model provides a power shaft assembly that novel sunshade screen used which characterized in that: comprises an outer rotating shaft (20) used for installing the curtain cloth (10), a coil spring (30) arranged in the outer rotating shaft (20), and a first end block (40) and a second end block (50) which are respectively arranged at two ends of the outer rotating shaft (20) along the axial direction of the outer rotating shaft (20);
at the first end block (40): one end of the outer rotating shaft (20) and one end of the coil spring (30) both extend to the first end block (40), the coil spring (30) is fixedly matched with the first end block (40) in the rotating direction of the coil spring (30), and the outer rotating shaft (20) is rotatably matched with the coil spring (30);
at the second end-block (50): the other end of the outer rotating shaft (20) extends to the second end block (50) and is rotatably arranged on the second end block (50), and the other end of the coil spring (30) does not extend to the second end block (50) and is fixedly connected with the outer rotating shaft (20).
2. The powered axle assembly of claim 1, wherein: the spring winding mechanism further comprises a fixing shaft sleeve (60) and a middle fixing sleeve (70), the fixing shaft sleeve (60) is fixedly connected to one end of the coil spring (30) and fixedly matched with the first end block (40) in the rotating direction of the coil spring (30), one end, close to the first end block (40), of the outer rotating shaft (20) is rotatably sleeved on the periphery of the fixing shaft sleeve (60), and the middle fixing sleeve (70) is fixedly connected to the other end of the coil spring (30) and fixedly connected with the outer rotating shaft (20).
3. The power shaft assembly of claim 2, wherein: the first end block (40) is fixedly provided with a square adapter (41), a square clamping hole (61) is formed in the fixed shaft sleeve (60), the square adapter (41) is inserted in the square clamping hole (61), and the square adapter and the square clamping hole are in clearance fit.
4. The powered axle assembly of claim 2, wherein: the fixed shaft sleeve (60) is provided with a first spiral connecting section (62), and the first spiral connecting section (62) is in spiral fit with a coil at one end of the coil spring (30); and a second spiral connecting section (71) is arranged on the middle fixing sleeve (70), and the second spiral connecting section (71) is in spiral fit with a coil at the other end of the coil spring (30).
5. The powered axle assembly of claim 2, wherein: the middle fixing sleeve (70) is provided with a shaft fixing section (72), the outer rotating shaft (20) is provided with a plurality of inward concave parts (21) at the shaft fixing section (72), the outer peripheral surface of the shaft fixing section (72) is provided with a plurality of convex parts (73) and at least one clamping groove (74) formed between two adjacent convex parts (73), and the concave parts (21) are clamped and fixed with the clamping grooves (74) or the convex parts (73) are abutted and tightly matched and fixed with the concave parts (21).
6. The powered axle assembly of claim 2, wherein: the bearing assembly further comprises a first shaft sleeve (80) and a second shaft sleeve (90) which are respectively fixed at two ends of the outer rotating shaft (20), a supporting shaft part (51) is fixedly arranged on the second end block (50), one end of the outer rotating shaft (20) is rotatably arranged on the fixed shaft sleeve (60) through the first shaft sleeve (80), and the other end of the outer rotating shaft (20) is rotatably arranged on the supporting shaft part (51) through the second shaft sleeve (90).
7. The power shaft assembly of claim 6, wherein: both ends of the outer rotating shaft (20) are provided with limiting notches (22), and the peripheral surfaces of the first shaft sleeve (80) and the second shaft sleeve (90) are fixedly provided with limiting bosses (91) clamped in the limiting notches (22).
8. The power shaft assembly of claim 6, wherein: the outer rotating shaft (20) and the first shaft sleeve (80) as well as the outer rotating shaft (20) and the second shaft sleeve (90) are tightly matched and fixed; the peripheral surfaces of the first shaft sleeve (80) and the second shaft sleeve (90) are fixedly provided with a plurality of circumferentially arranged convex ribs (92).
9. The power shaft assembly of claim 6, wherein: the inner peripheral surfaces of the first shaft sleeve (80) and the second shaft sleeve (90) are coated with lubricating oil.
10. The power shaft assembly of claim 6, wherein: the locking device is characterized by further comprising a locking pin shaft (110), wherein the fixed shaft sleeve (60) and the first shaft sleeve (80) are respectively provided with a pin hole (120) which is communicated with each other, and the locking pin shaft (110) is detachably inserted into the pin holes (120) of the fixed shaft sleeve (60) and the first shaft sleeve (80).
11. The powered axle assembly of claim 2, wherein: and the coil spring (30), the fixed shaft sleeve (60) and the middle fixed sleeve (70) are assembled to form an independent power shaft sub-assembly.
12. The power shaft assembly of claim 11, wherein: the power shaft subassembly further comprises a rubber sleeve (130) arranged between the outer rotating shaft (20) and the coil spring (30).
13. The powered axle assembly of claim 12, wherein: the thickness of the rubber sleeve (130) is 1.5 mm-2.5 mm, and the outer diameter of the rubber sleeve (130) is 9 mm-12 mm.
14. The power shaft assembly of claim 11, wherein: the power shaft sub-assembly further comprises a positioning mandrel (140) penetrating through the coil spring (30), the positioning mandrel (140) is parallel to the outer rotating shaft (20), and two ends of the positioning mandrel (140) are inserted into the fixed shaft sleeve (60) and the middle fixed sleeve (70) in an abutting mode respectively.
15. The powered axle assembly of claim 1, wherein: the length of the coil spring (30) is 30% -90% of the length of the outer rotating shaft (20).
16. The power shaft assembly of claim 1, wherein: the thickness of the outer rotating shaft (20) is 0.8 mm-3 mm, and the outer diameter of the outer rotating shaft (20) is 10 mm-17 mm.
17. The power shaft assembly of claim 1, wherein: the diameter of a steel wire forming the coil spring (30) is 0.6 mm-1.5 mm, and the outer diameter of the coil spring (30) is 8 mm-10 mm.
18. A sunshade system comprises a curtain cloth (10) and a power mechanism for driving the curtain cloth (10) to be opened or rewound, and is characterized in that: further comprising the power shaft assembly of any of claims 1-17, the inner edge of the curtain cloth (10) being fixed to the outer shaft (20) and the curtain cloth (10) being wound around the outer shaft (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121307438.6U CN217022150U (en) | 2021-06-11 | 2021-06-11 | Novel power shaft assembly for sunshade curtain and sunshade curtain system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121307438.6U CN217022150U (en) | 2021-06-11 | 2021-06-11 | Novel power shaft assembly for sunshade curtain and sunshade curtain system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217022150U true CN217022150U (en) | 2022-07-22 |
Family
ID=82409775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121307438.6U Active CN217022150U (en) | 2021-06-11 | 2021-06-11 | Novel power shaft assembly for sunshade curtain and sunshade curtain system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217022150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115257492A (en) * | 2022-07-27 | 2022-11-01 | 东风汽车集团股份有限公司 | Device for forming independent space for passenger car cabin and passenger car |
-
2021
- 2021-06-11 CN CN202121307438.6U patent/CN217022150U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115257492A (en) * | 2022-07-27 | 2022-11-01 | 东风汽车集团股份有限公司 | Device for forming independent space for passenger car cabin and passenger car |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6843301B2 (en) | Awning roller with internal motor | |
| CN217022150U (en) | Novel power shaft assembly for sunshade curtain and sunshade curtain system | |
| AU2014273925B2 (en) | Shifting roll awning with drive mechanism | |
| US6749142B2 (en) | Apparatus for winding sheet-like element | |
| MX2013007900A (en) | Winding shaft drive for operating a retractable architectural covering and shaft brake module for use therein. | |
| CN110634407B (en) | Winding mechanism and winding type display terminal | |
| US9616735B2 (en) | Vehicle roll shade device | |
| CN107435513B (en) | Bent shaft assembly for sunshade curtain and bent shaft sunshade curtain | |
| CN115465065A (en) | Novel power shaft assembly for sunshade curtain and sunshade curtain system | |
| KR20170095353A (en) | Protective Device For A Vehicle Interior And Rear Shelf For An Interior of A Passenger Car | |
| CN113879082B (en) | Reel, roll up curtain subassembly, printing opacity subassembly and vehicle | |
| CN112339540A (en) | Electric tail-box cover and automobile | |
| CN212219858U (en) | Manual automobile skylight sunshade curtain with arc-shaped scroll | |
| CN210591342U (en) | Sunroof sunshade screen mechanism and sunroof system | |
| CN110884328A (en) | Reelpipe energy storage buffer device | |
| US11230884B2 (en) | Drive system driving a screen, and apparatus comprising such a system | |
| CN108859683B (en) | Roller of sun-shading curtain | |
| CN111559234B (en) | Manual formula sunroof sunshade screen of arc spool | |
| GB2535506A (en) | Retractable blind system | |
| CN113047763B (en) | Folding rolling curtain | |
| JP5470619B2 (en) | Shutter winder | |
| CN209921019U (en) | Linkage type sun-shading curtain for fully shading automobile skylight | |
| CN216043464U (en) | Spring roller shutter and sun-shading window | |
| CN211764852U (en) | Roller structure of skylight sunshade screen | |
| CN220720786U (en) | Self-rolling built-in double-spring sun-shading curtain cord reel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |