Felt drag support

Abstract

This utility model discloses a felt resistance support, including a support, a fixing block on the side of the support, a sleeve on the fixing block, a first felt sheet inside the sleeve that contacts the side of the fixing block, a groove at the end of the sleeve away from the support, a second felt sheet inside the groove, a pressing column inserted into the fixing block that contacts the side of the first felt sheet, a resistance spring and a housing on the outer side of the sleeve, the resistance spring being located between the sleeve and the housing, an iron pin on the resistance spring, a sliding groove on the inner side of the housing, the iron pin being slidably connected in the sliding groove, and an adjustment component on the support. This utility model adjusts the force of the pressing column pressing the first and second felt sheets by screws and nuts, thereby adjusting the frictional resistance between the sleeve, the pressing column, and the fixing block, thus achieving adjustment and control of the sleeve's rotation speed.

Description

Technical Field

[0001] This utility model belongs to the technical field of curtain accessories and relates to a felt resistance bracket. Background Technology

[0002] Curtains, as an essential decorative item in homes and offices, are mainly used to block sunlight and protect privacy. Current technology uses rollers to raise and lower curtains. To account for the speed of curtain retraction and the noise generated during retraction, a speed reducer is usually installed at the roller. Currently, there are spring roller blinds on the market that use spring rods to achieve automatic retraction. A certain amount of resistance is required during the retraction process to prevent the curtains from retracting too quickly and damaging them.

[0003] Chinese utility model patent CN215673281U discloses a reducer for spring roller blinds, including a drive disc, a spring coaxially connected to the roller, a cavity connected to one side of the drive disc, and a rotating screw coaxially connected to the drive disc via a clutch component. A space for accommodating resistance oil is provided between the cavity and the rotating screw. A rubber ring for resisting the rebound force of the spring is installed at one end of the drive disc. When the rotating screw agitates the resistance oil, it simultaneously squeezes the rubber ring, causing the rubber ring to generate resistance against the spring's rebound force. The faster the rotating screw rotates, the greater the screw's reaction force, and the tighter the rubber ring is pressed, resulting in greater resistance. Correspondingly, when the blind is pulled to its lowest point, the retraction speed decreases due to increased resistance. However, this technical solution still uses resistance oil, making it impossible to adjust the resistance during use, limiting its functionality, and making it prone to oil leakage. During blind assembly, grease can easily soil the fabric, affecting the quality of the finished blind. In low-temperature environments, the resistance oil becomes viscous, resulting in excessive resistance that prevents the curtains from automatically retracting, thus affecting the user experience. Utility Model Content

[0004] To address the problems of existing resistance oils being unable to adjust resistance, having limited functionality, easily soiling the curtain fabric with grease, affecting the quality of finished curtains, and having poor environmental adaptability, thus impacting the user experience, this utility model proposes a felt resistance bracket. This effectively solves the problems of existing resistance oils being unable to adjust resistance, having limited functionality, easily soiling the curtain fabric with grease, affecting the quality of finished curtains, and having poor environmental adaptability, thus impacting the user experience.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A felt resistance bracket includes a bracket, a fixing block disposed on the side of the bracket, a sleeve fitted on the fixing block, a first felt sheet disposed inside the sleeve and in contact with the side of the fixing block, a groove formed at the end of the sleeve away from the bracket, a second felt sheet disposed in the groove, a pressing column inserted into the fixing block, the pressing column in contact with the side of the first felt sheet, a resistance spring and a housing disposed on the outer side of the sleeve, the resistance spring being located between the sleeve and the housing, an iron pin disposed on the resistance spring, a sliding groove formed on the inner side of the housing, the iron pin being slidably connected in the sliding groove, and an adjustment component disposed on the bracket for adjusting the left and right movement of the pressing column.

[0007] Furthermore, the adjustment assembly includes a screw disposed on the side of the support, a through hole is provided in the extrusion column, the end of the screw passes through the support and is inserted into the through hole, a nut is embedded in the extrusion column, and the end of the screw passes through the through hole and is threadedly connected to the nut.

[0008] Furthermore, the extrusion column is a cuboid, and the first felt sheet, the second felt sheet, and the fixing block are all provided with square openings that match the extrusion column.

[0009] Furthermore, the end of the extrusion column away from the support extends to the outside of the housing, and a buckle is provided on the end of the extrusion column that extends out of the housing, and the buckle contacts the outer side of the housing.

[0010] Furthermore, the resistance spring is a one-way torsion spring.

[0011] Furthermore, a circular through hole is provided on the inner side of the sleeve, and the column of the extrusion column is inserted into the circular through hole, and the column of the extrusion column does not contact the inner side of the circular through hole.

[0012] Furthermore, the side of the extrusion column has an opening corresponding to the size of the nut.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) This utility model adjusts the force of the extrusion column to extrude the first and second felt pieces by screws and nuts, thereby adjusting the frictional resistance between the sleeve and the extrusion column and the fixed platform, thereby realizing the adjustment and control of the sleeve rotation speed. In addition, the absence of resistance oil can solve the problem of curtain function failure in low-temperature environments in some parts of Europe. There is no grease overflow, which improves the finished quality of the curtain.

[0015] (2) This utility model locks the sleeve in one direction by means of a resistance spring, so that the sleeve is only resisted when rotating in that direction, and is not resisted when rotating in the opposite direction, which improves the usability and convenience of the device when the operator uses it. Attached Figure Description

[0016] Figure 1 This is an exploded view of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model;

[0018] Figure 3 This is a three-dimensional assembly drawing of the present invention;

[0019] Figure 4 This is a schematic diagram showing the fit between the sleeve, resistance spring, and outer shell of this utility model;

[0020] Figure 5 This is a front view of the mating structure of this utility model.

[0021] The diagram shows: 1. Outer shell; 2. Extrusion column; 3. Buckle; 4. Resistance spring; 5. First felt sheet; 6. Sleeve; 7. Second felt sheet; 8. Bracket; 9. Screw; 10. Nut. Detailed Implementation

[0022] 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.

[0023] like Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, a felt resistance support 8 includes a support 8, a fixing block is provided on the side of the support 8, a sleeve 6 is sleeved on the fixing block, a first felt piece 5 is provided between the fixing block and the sleeve 6 and contacts the inner side of the sleeve 6, a groove is opened at the end of the sleeve 6 away from the support 8, a second felt piece 7 is provided in the groove, a pressing column 2 is inserted into the fixing block and contacts the side of the first felt piece 5, a resistance spring 4 and a shell 1 are sleeved on the outer side of the sleeve 6, the resistance spring 4 is located between the sleeve 6 and the shell 1, an iron pin is provided on the resistance spring 4, a sliding groove is opened on the inner side of the shell 1 and the iron pin is slidably connected in the sliding groove, and an adjustment component is provided on the support 8 to adjust the left and right movement of the pressing column 2.

[0024] like Figure 1 as well as Figure 2As shown, in this embodiment, the adjustment component includes a screw 9 disposed on the side of the bracket 8, a through hole is provided in the extrusion column 2, the end of the screw 9 passes through the bracket 8 and is inserted into the through hole, a nut 10 is embedded in the extrusion column 2, and the end of the screw 9 passes through the through hole and is threadedly connected to the nut 10.

[0025] like Figure 1 As shown, in this embodiment, the column of the extrusion column 2 is a cuboid, and the first felt sheet 5, the second felt sheet 7 and the fixing block are all provided with square openings that cooperate with the column of the extrusion column 2.

[0026] The working principle of the above embodiment is as follows: A first felt piece 5 and a second felt piece 7 are placed on the inner and outer surfaces of the sleeve 6, respectively. The extrusion column 2 is inserted into the circular through hole, so that the extrusion column 2 and the fixed platform are in close contact with the first felt piece 5 and the second felt piece 7 on the sleeve 6, respectively. Then, the screw 9 passes through the through hole in the extrusion column 2 and is threadedly connected to the nut 10. When the screw 9 is rotated, the extrusion column 2 moves towards the fixed platform under the action of the thread. At the same time, the extrusion column 2 can push the sleeve 6 to move synchronously, further increasing the pressure between the first felt piece 5 and the second felt piece 7 and the extrusion column 2 and the fixed platform, thereby increasing the frictional resistance between the sleeve 6 and the extrusion column 2 and the fixed platform, and slowing down the rotation speed of the sleeve 6. By adjusting the tightness of the screw 9, the force of the extrusion column 2 extruding the felt piece can be adjusted, and the resistance can be adjusted. When working, the curtain is unlocked, the curtain tube drives the outer shell 1 to rotate, and the outer shell 1 drives the resistance torsion spring and the sleeve 6 to rotate, providing resistance for the curtain to be pulled up.

[0027] Example 2 differs from Example 1 in that:

[0028] like Figure 1 , Figure 2 , Figure 3 as well as Figure 5 As shown, in this embodiment, the end of the extrusion column 2 away from the bracket 8 extends to the outside of the outer shell 1. A buckle 3 is provided on the end of the extrusion column 2 that extends out of the outer shell 1. The buckle 3 contacts the outer side of the outer shell 1. The inner surface groove of the outer shell 1 slides into the buckle 3, which fastens the buckle 3 to the top of the extrusion column 2 to prevent the outer shell 1 from falling off, thus ensuring the reliability of the device during use.

[0029] In this embodiment, the resistance spring 4 is a one-way torsion spring, also known as a one-way resistance spring 4. It is a special spring or spring combination device that provides resistance or damping force in only one direction, while allowing relatively free or low-resistance movement in the opposite direction. Its working principle is that when the mechanism or object moves in the direction that requires resistance, the spring is compressed, stretched or torsional deformed, absorbs energy, generates damping force, and slows down the movement speed. The one-way torsion spring also has the characteristic of reverse freedom. When the movement direction is reversed, the mechanism design of the spring (usually combined with ratchet, clutch, inclined plane, check valve or special geometry) makes the spring generate no resistance or very little resistance, allowing a fast and smooth return. Its core function is to allow relatively free (or low-resistance) movement in one direction, while applying significant resistance, damping or stopping movement in the opposite direction.

[0030] When in use, rotating the outer casing 1 can drive the resistance spring 4 to rotate. Since the resistance spring 4 is locked in only one direction, when the curtain is pulled up, the resistance spring 4 locks the sleeve 6, causing the sleeve 6 to rotate, providing resistance for pulling up the curtain. When the curtain is pulled down, the resistance spring 4 slides and rotates on the sleeve 6, with minimal resistance, making the pulling down feel smooth and providing a good user experience.

[0031] In this embodiment, a circular through hole is provided on the inner side of the sleeve 6, and the column of the extrusion column 2 is inserted into the circular through hole. The column of the extrusion column 2 does not contact the inner side of the circular through hole. The design of the circular through hole ensures that the sleeve 6 does not contact the column of the extrusion column 2 when rotating, thus ensuring the smoothness of the sleeve 6 when rotating.

[0032] In this embodiment, the side of the extrusion column 2 has an opening corresponding to the size of the nut 10. During use, the operator can install and remove the nut 10 through the opening, which improves the convenience of the operator when installing and removing the nut 10.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A felt resistance support, comprising a support (8), characterized in that: The bracket (8) has a fixing block on its side, and a sleeve (6) is fitted on the fixing block. A first felt piece (5) is provided inside the sleeve (6) and contacts the side of the fixing block. A groove is opened at the end of the sleeve (6) away from the bracket (8). A second felt piece (7) is provided in the groove. An extrusion column (2) is inserted into the fixing block. The extrusion column (2) contacts the side of the first felt piece (5). A resistance spring (4) and a shell (1) are fitted on the outer side of the sleeve (6). The resistance spring (4) is located between the sleeve (6) and the shell (1). An iron pin is provided on the resistance spring (4). A sliding groove is opened on the inner side of the shell (1). The iron pin is slidably connected in the sliding groove. An adjustment component for adjusting the left and right movement of the extrusion column (2) is provided on the bracket (8).

2. The felt resistance support according to claim 1, characterized in that: The adjustment assembly includes a screw (9) disposed on the side of the bracket (8), a through hole is provided in the extrusion column (2), the end of the screw (9) passes through the bracket (8) and is inserted into the through hole, a nut (10) is embedded in the extrusion column (2), and the end of the screw (9) passes through the through hole and is threadedly connected to the nut (10).

3. The felt resistance support according to claim 1, characterized in that: The extrusion column (2) is a cuboid, and the first felt piece (5), the second felt piece (7) and the fixing block are all provided with square openings that match the extrusion column (2).

4. The felt resistance support according to claim 1, characterized in that: The end of the extrusion column (2) away from the bracket (8) extends to the outside of the outer shell (1). A buckle (3) is provided on the end of the extrusion column (2) that extends out of the outer shell (1). The buckle (3) contacts the outer side of the outer shell (1).

5. A felt resistance support according to claim 1, characterized in that: The resistance spring (4) is a one-way torsion spring.

6. A felt resistance support according to claim 1, characterized in that: The sleeve (6) has a circular through hole on its inner side. The column of the extrusion column (2) is inserted into the circular through hole, and the column of the extrusion column (2) does not contact the inner side of the circular through hole.

7. A felt resistance support according to claim 2, characterized in that: The side of the extrusion column (2) has an opening corresponding to the size of the nut (10).

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