Locking and rotation-stopping linkage mechanism

Abstract

The application provides a locking and rotation-stopping linkage mechanism, which makes the locking of a reel convenient and reliable and has low manufacturing cost. The mechanism comprises a reel shell, a reel and end covers on both sides. The length direction ends of the reel shell are respectively provided with concave bearing positioning mechanisms. The length direction ends of the reel are respectively fixed with shaft sleeves, and then positioned on the bearing positioning mechanisms through bearings. At least one limiting hole is formed on the outer ring position of the shaft sleeve. Through holes with the same number as the limiting holes are formed on the vertical plates of the bearing positioning mechanisms. The interval arc degrees of the through holes arranged on the ring position are equal to the interval arc degrees of the limiting holes. A guide groove is arranged on the exposed edge of the reel shell from the end inward. A group of locking positioning hole grooves are arranged on the inner end of the guide groove.

Description

Technical Field

[0001] This invention relates to the technical field of multifunctional blinds, specifically to a locking and anti-rotation linkage mechanism. Background Technology

[0002] Existing multi-functional blinds are hung on the windshield and use two layers of fabric in different colors to display different functions. The lighter-colored back is used for projection screens, while the darker-colored front is used for sunshade and object covering. The roller shell of the existing multi-functional blinds has end caps fixed along its length, which are fixed to the vehicle body by clips. Since the unfolded length of the curtain is determined by the rotation of the roller, the unfolded length of the curtain itself is unstable without a roller anti-rotation structure. In actual use, the blinds need to be equipped with an additional roller anti-rotation structure, which increases the manufacturing cost of the blinds. Therefore, there is an urgent need to develop a low-cost mechanism that can effectively prevent rotation. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a locking and anti-rotation linkage mechanism, which makes locking the reel convenient and reliable, and has low manufacturing costs.

[0004] A locking and anti-rotation linkage mechanism, characterized in that it comprises:

[0005] Scroll housing;

[0006] reel;

[0007] And the end caps on both sides;

[0008] The scroll housing has recessed bearing positioning mechanisms at both ends along its length. The scroll has bushings fixed at both ends along its length and then positioned by bearings in the bearing positioning mechanisms. At least one limiting hole is provided on the outer ring of the bushing. The bearing positioning mechanism has the same number of through holes as the limiting holes on its upright plate. The circumferential spacing of the through holes is equal to the circumferential spacing of the limiting holes. A guide groove is provided on the exposed edge of the scroll housing from the end inward. A set of locking positioning hole grooves is provided at the inner end of the guide groove.

[0009] The end cap includes an inner cavity and an outer contour. A button is provided on the upper part of the outer contour of the end cap corresponding to the surface position of the guide groove. The button includes a locking head and a guide part. The guide part is embedded in the guide groove. The locking head is embedded in the corresponding locking positioning hole groove in the locked state. The corresponding end of the scroll housing is inserted into the inner cavity. A linear spring is provided between the outer central area of ​​the bearing positioning mechanism and the axial central inner wall of the inner cavity. An anti-rotation rod is also fixed on the inner wall of the inner cavity. The number of anti-rotation rods is the same as the number of through holes. The anti-rotation rods are arranged corresponding to the positions of the through holes.

[0010] Its further features are:

[0011] The number of limiting holes is two, and the two limiting holes are arranged at equal intervals in the radial position of the same outer annular surface of the bushing.

[0012] The limiting hole is an arc-shaped waist-shaped hole, which ensures a certain error correction when the anti-rotation rod is inserted;

[0013] The outer central region of the bearing positioning mechanism protrudes forward to form a first stop block, and the axial central inner wall of the concave cavity protrudes outward to form a spring mounting seat. One end of the linear spring is mounted on the spring mounting seat, and the other end of the linear spring is fitted onto the first stop block, which makes the linear direction of the linear spring stable and reliable.

[0014] The outer contour of the end cap is provided with a notch guide groove corresponding to the area of ​​the curtain fabric. The notch guide groove ensures the normal opening and closing of the curtain fabric.

[0015] There are two through holes and two anti-rotation rods. A guide sleeve is provided at one end of the through hole facing the anti-rotation rod. The guide sleeve facilitates the accurate and reliable entry of the anti-rotation rod into the through hole and thus into the limiting hole.

[0016] With this invention, a deeper positioning hole is provided at the location of the end cap on the vehicle body, allowing the end cap to move axially along the positioning hole. When the curtain is opened to the appropriate position, the two end caps are moved towards the center, and then the button is pressed, causing the locking head to be embedded in the corresponding locking positioning hole groove. At the same time, the anti-rotation rod passes through the corresponding through hole and is inserted into the limiting hole, thereby positioning the unfolded state of the curtain. When the curtain length needs to be adjusted, the button is opened, and under the action of the linear spring, the anti-rotation rod will disengage from the limiting hole, allowing the curtain to be opened to any position. This makes the locking of the roller convenient and reliable, and the manufacturing cost is low. Attached Figure Description

[0017] Figure 1 This is a partial perspective view of the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure in the left view;

[0019] Figure 3 for Figure 2 A schematic diagram of the AA cross-section structure;

[0020] Figure 4 This is a three-dimensional schematic diagram of the assembly of the present invention;

[0021] Figure 5 for Figure 4 A longitudinal section diagram;

[0022] The names corresponding to the serial numbers in the diagram are as follows:

[0023] 10. Roller housing, 11. Bearing positioning mechanism, 12. Through hole, 13. Guide groove, 14. Locking positioning hole groove, 15. First stop block, 16. Guide sleeve, 17. Linear guide groove, 20. Roller, 21. Bushing, 22. Limiting hole, 30. End cover, 31. Inner cavity, 32. Outer contour, 33. Spring mounting seat, 34. Notch guide groove, 40. Bearing, 50. Button, 51. Locking head, 52. Guide part, 60. Linear spring, 70. Anti-rotation rod, 80. Curtain, 90. Detailed Implementation

[0024] A locking and anti-rotation linkage mechanism, see Figures 1-5 It includes a scroll housing 10, a scroll 20, and end caps 30 on both sides;

[0025] The two ends of the scroll housing 10 along its length are respectively provided with concave bearing positioning mechanisms 11. The two ends of the scroll 20 along its length are respectively fixed with bushings 21 and then positioned by bearings 40 to the bearing positioning mechanisms 11. At least one limiting hole 22 is provided on the outer ring of the bushing 21. The vertical plate of the bearing positioning mechanism 11 is provided with the same number of through holes 12 as the limiting holes 22, and the circumferential spacing of the through holes 12 is equal to the circumferential spacing of the limiting holes 22. A guide groove 13 is provided on the exposed edge of the scroll housing 10 from the end inward. A set of locking positioning hole grooves 14 is provided at the inner end of the guide groove 13.

[0026] The end cap 30 includes an inner cavity 31 and an outer contour 32. A button 50 is provided on the upper part of the outer contour 32 of the end cap 30 corresponding to the surface position of the guide groove 13. The button 50 includes a locking head 51 and a guide part 52. The guide part 52 is embedded in the guide groove 13. The locking head 51 is embedded in the corresponding locking positioning hole groove 14 in the locked state. The corresponding end of the scroll housing 10 is inserted into the inner cavity 31. A linear spring 60 is provided between the outer central area of ​​the bearing positioning mechanism 11 and the axial central inner wall of the inner cavity 31. An anti-rotation rod 70 is also fixed on the inner wall of the inner cavity 31. The number of anti-rotation rods 70 is the same as that of the through holes 12. The anti-rotation rods 70 are arranged corresponding to the position of the through holes 12.

[0027] In specific implementation, there are two limiting holes 22. The centers of the two limiting holes 22 are arranged at equal intervals of 180° on the radial position of the same outer annular surface of the bushing 21. The limiting holes 22 are arc-shaped and waist-shaped holes, which ensures that the anti-rotation rod 70 has a certain error correction when it is inserted. There are two through holes 12 and two anti-rotation rods 70. A guide sleeve 16 is provided at the end of the through hole 12 facing the anti-rotation rod 70. The guide sleeve 16 facilitates the accurate and reliable entry of the anti-rotation rod 70 into the through hole 12 and thus into the limiting hole 22. In specific implementation, the anti-rotation rod 70 is fixed to the inner wall of the concave cavity 31 by a threaded structure, which makes the anti-rotation rod 70 easy to replace.

[0028] In a specific implementation, the central area of ​​the outer vertical plate of the bearing positioning mechanism 11 protrudes forward to form a first stop block 15, and the inner wall of the axial center of the concave cavity 31 protrudes outward to form a spring mounting seat 33. One end of the linear spring 60 is mounted on the spring mounting seat 33, and the other end of the linear spring 60 is fitted onto the first stop block 15. In a preferred embodiment, the protruding part of the bearing 40 forms the first stop block 15, which makes the linear direction of the linear spring 60 stable and reliable.

[0029] The outer contour of the end cap 30 is provided with a notch guide groove 34 corresponding to the area of ​​the curtain 80. The notch guide groove 34 ensures the normal unfolding and closing of the curtain 80.

[0030] In practice, button 50 is located on the upper surface of end cover 30, a straight guide groove 17 is provided at the bottom of the roll housing 10, and a guide screw 90 is provided at the lower part of end cover 30. The guide screw 90 is moved along the straight guide groove 17 to ensure that the straight movement between the roll housing 10 and end cover 30 is stable and reliable. When disassembly is required, the guide screw 90 is removed and the end cover 30 is pulled out of the roll housing 10 directly.

[0031] Its working principle is as follows: A deep positioning hole is set at the position of the end cover on the vehicle body, so that the end cover can move axially along the positioning hole. When the curtain is opened to the appropriate position, the two end covers are moved towards the center, and then the button is pressed, so that the locking head is embedded in the corresponding locking positioning hole groove. At the same time, the anti-rotation rod passes through the corresponding through hole and is inserted into the limiting hole, thereby positioning the unfolded position of the curtain. When the curtain length needs to be adjusted, the button is opened, and under the action of the linear spring, the anti-rotation rod will disengage from the limiting hole, so that the curtain can be opened to any position. This makes the locking of the roller convenient and reliable, and the manufacturing cost is low.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A locking and anti-rotation linkage mechanism, characterized in that, It includes: Scroll housing; reel; And the end caps on both sides; The scroll housing has recessed bearing positioning mechanisms at both ends along its length. The scroll has bushings fixed at both ends along its length and then positioned by bearings in the bearing positioning mechanisms. At least one limiting hole is provided on the outer ring of the bushing. The bearing positioning mechanism has the same number of through holes as the limiting holes on its upright plate. The circumferential spacing of the through holes is equal to the circumferential spacing of the limiting holes. A guide groove is provided on the exposed edge of the scroll housing from the end inward. A set of locking positioning hole grooves is provided at the inner end of the guide groove. The end cap includes an inner cavity and an outer contour. A button is provided on the upper part of the outer contour of the end cap corresponding to the surface position of the guide groove. The button includes a locking head and a guide part. The guide part is embedded in the guide groove. The locking head is embedded in the corresponding locking positioning hole groove in the locked state. The corresponding end of the scroll housing is inserted into the inner cavity. A linear spring is provided between the outer central area of ​​the bearing positioning mechanism and the axial central inner wall of the inner cavity. An anti-rotation rod is also fixed on the inner wall of the inner cavity. The number of anti-rotation rods is the same as the number of through holes. The anti-rotation rods are arranged corresponding to the positions of the through holes.

2. The locking and anti-rotation linkage mechanism as described in claim 1, characterized in that: The number of limiting holes is two, and the two limiting holes are arranged at equal intervals in the radial position of the same outer annular surface of the bushing.

3. A locking and anti-rotation linkage mechanism as described in claim 1 or 2, characterized in that: The limiting hole is an arc-shaped or waist-shaped hole.

4. The locking and anti-rotation linkage mechanism as described in claim 1, characterized in that: The outer central region of the bearing positioning mechanism protrudes forward to form a first stop block, and the axial central inner wall of the concave cavity protrudes outward to form a spring mounting seat. One end of the linear spring is mounted on the spring mounting seat, and the other end of the linear spring is fitted onto the first stop block.

5. The locking and anti-rotation linkage mechanism as described in claim 1, characterized in that: The outer contour of the end cap is provided with a notch guide groove corresponding to the area of ​​the curtain fabric.

6. The locking and anti-rotation linkage mechanism as described in claim 2, characterized in that: The number of through holes is two, the number of anti-rotation rods is two, and a guide sleeve is provided at the end of the through hole facing the anti-rotation rod.

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