Filtering type flat wheel combination

Abstract

The filtering type flat wheel combination comprises a flat wheel, a filtering wheel is arranged on the right side of the bottom of the flat wheel, and a guide-in wheel is arranged on the left side of the bottom of the flat wheel; a steel wire is wound around the leading-in wheel and the filtering wheel and is wound by the flat wheel; the horizontal right side of the flat wheel is a first leading-in end, the horizontal right side of the filtering wheel is a second leading-out end, and the second leading-out end is located under the first leading-in end. When the steel wire at the bottom of the third leading-in end of the leading-in wheel or between the leading-in wheel and the filtering wheel is loosened, the filtering wheel prevents the jumping steel wire from transmitting jumping waves backwards, so that the part, located between the first leading-in end and the second leading-out end, of the steel wire is kept to be in tensioning arrangement, the steel wire can be tensioned at the moment, and the service life of the steel wire is prolonged. And the door body is prevented from falling suddenly in the ascending process.

Description

Technical Field

[0001] This invention relates to the field of garage doors, and in particular to a filter-type flat wheel assembly. Background Technology

[0002] The garage door has two states: vertically closed and horizontally retracted. When closed, the door stands vertically, completely covering the garage entrance and exit, providing a closed and protective function. During opening, the door rotates around a specific transmission structure, gradually turning from the initial vertical state to the horizontal state, and finally retracts completely into the top of the garage wall, without occupying extra space, ensuring complete passage at the garage entrance and exit.

[0003] See Figure 1 The specific structure of the garage door is as follows: A rotating shaft 01 is fixedly installed at the top of the inner side of the wall, and a flat wheel 02 is fitted at the end of the shaft. A torsion spring 03 is also equipped to cooperate with the rotating shaft 01. The torsion spring 03 generates assistance through its own elastic deformation, effectively reducing the load on the door 04 during movement and improving the smoothness of operation. Secondly, vertical slide rails 05 are set on both sides of the inner side of the wall, and horizontal slide rails 06 are installed on the top surface of the wall. The two types of slide rails are connected end to end to form a complete guide path, providing precise guidance for the door 04 to switch between the vertical closed state and the horizontal storage state, and avoiding movement deviation. In addition, a steel wire, as a key transmission component, is firmly fixed at one end to the bottom of the door 04, and the other end is tightly wound on the flat wheel 02. When the flat wheel 02 rotates with the rotating shaft 01, the door 04 is directly driven to complete the flipping and movement through the traction and release of the steel wire. During prolonged and repeated opening and closing of the garage door, the steel cable is stretched. The steel cable cannot be tautly connected between the bottom of the door body 04 and the flat wheel 02. The linear speed of the flat wheel 02 during the winding process cannot match the moving speed of the steel cable. The flat wheel 02 may spin freely, and the steel cable may also jump. In this scenario, the door body 04 may suddenly fall during the rising process, which may lead to the collapse of the door body 04 and pose a safety hazard to people passing under the door body 04.

[0004] In summary, how to keep the steel wire taut between the flat wheel and the bottom of the garage door has become an urgent problem for researchers in this field. Summary of the Invention

[0005] The technical problem to be solved by this invention is: how to keep the steel wire taut and wound between the flat wheel and the bottom of the garage door at all times; To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: This invention is a filter-type flat wheel assembly, comprising: a flat wheel, a filter wheel disposed on the bottom right side of the flat wheel, and an inlet wheel disposed on the bottom left side of the flat wheel; a steel wire is wound around the inlet wheel and the filter wheel and is wound up by the flat wheel; the horizontal right side of the flat wheel is a first inlet end, and the horizontal right side of the filter wheel is a second outlet end, the second outlet end being located directly below the first inlet end; when the steel wire at the bottom of the third inlet end of the inlet wheel or between the inlet wheel and the filter wheel becomes loose, the filter wheel prevents the jumping steel wire from transmitting jumping waves backward, so as to keep the portion of the steel wire located between the first inlet end and the second outlet end taut.

[0006] Furthermore, the inlet wheel and filter wheel are rotatably mounted on the wall via corresponding brackets.

[0007] Furthermore, the filter wheel is provided with a winding groove on its circumference to accommodate the steel wire.

[0008] Furthermore, the guide wheel includes: a wheel body, a winding groove provided on the circumference of the wheel body, the wheel body being rotatably mounted on a fixed shaft, a sleeve provided on one side of the wheel body, the sleeve being sleeved on the fixed shaft, and a torsion spring being provided between the sleeve and the fixed shaft; a pressure rod assembly is provided radially outwardly on the outer circumferential wall of the sleeve, the pressure rod assembly being able to rotate along the circumference of the wheel body under the action of the torsion spring, and by changing the position of the steel wire and the third guide end of the wheel body, the steel wire is always wound around the wheel body.

[0009] Furthermore, the pressure bar assembly includes: a radial rod, one end of which is connected to the sleeve, and the other end of which extends radially out of the wheel body; an axial rod is perpendicular to the end of the radial rod, and a gap for pressing steel wire is formed between the axial rod and the outer peripheral wall of the wheel body.

[0010] Furthermore, a slider is provided on the radial rod, a limit block is provided at the end of the radial rod, and a spring is sleeved on the radial rod between the limit block and the slider; one end of the axial rod is fixedly connected to the slider, and under the action of the spring, the axial rod keeps the steel wire pressed against the wheel body.

[0011] Furthermore, the axial rod is rotatably connected to the slider.

[0012] Furthermore, the wheel body is axially limited on the fixed shaft by the retaining rings on both sides.

[0013] The beneficial effects of the present invention are as follows: The present invention is a filter-type flat wheel combination. When the steel wire at the bottom of the third inlet end of the inlet wheel or between the inlet wheel and the filter wheel becomes loose, the filter wheel prevents the jumping steel wire from transmitting the jumping wave backward, so as to keep the part of the steel wire located between the first inlet end and the second outlet end taut. At this time, the steel wire can be taut, so as to prevent the door from suddenly falling during the rising process. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a front view of the garage door; Figure 2 This is a side view of the garage door; Figure 3 This is a structural schematic diagram of this embodiment; Figure 4 This is a schematic diagram of the guide wheel structure; Figure 5 This is a schematic diagram of a structure where the steel wire is in a loose state; Figure 6 This is a schematic diagram of a steel wire in a taut state. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0017] See Figure 3 This embodiment is a filter-type flat wheel assembly, which is used to replace... Figure 1 The flat wheel assembly includes: a flat wheel 02, a filter wheel 2 is provided on the bottom right side of the flat wheel 02, and an guide wheel 1 is provided on the bottom left side of the flat wheel 02; the steel wire 001 is wound around the guide wheel 1 and the filter wheel 2 and is wound up by the flat wheel 02; The horizontal right side of the flat wheel 02 is the first inlet end 021. The flat wheel 02 is fixed to the rotating shaft 01. One side of the flat wheel 02 is connected by a torsion spring. The horizontal right side of the filter wheel 2 is the second outlet end 22, which is located directly below the first inlet end 021. The horizontal left side of the inlet wheel 1 is the third inlet end 11. The oblique steel wire 001 between the inlet wheel 1 and the filter wheel 2 is tangent to the filter wheel 2 and the inlet wheel 1, respectively. The initial contact position between the filter wheel 2 and the steel wire 001 is the second inlet end 11. The final contact position between the guide wheel 1 and the steel wire 001 at the inlet end 21 is the third outlet end 12. When the steel wire at the bottom of the third inlet end 11 of the guide wheel 1 or between the guide wheel 1 and the filter wheel 2 becomes loose, the filter wheel 2 prevents the jumping steel wire from transmitting the jumping wave backward, so as to keep the part of the steel wire 001 located between the first inlet end 021 and the second outlet end 22 taut. At this time, the steel wire 001 can be taut to prevent the door 04 from suddenly falling during the rising process. It should be noted that the center distance between the filter wheel 2, the guide wheel 1, and the flat wheel 02 does not change. The filter wheel 2, the guide wheel 1, and the flat wheel 02 are arranged in parallel axial directions. The filter wheel 2 and the guide wheel 1 achieve rotation through friction with the steel wire 001.

[0018] In some possible embodiments, the guide wheel 1 and the filter wheel 2 are rotatably mounted on the wall via corresponding brackets; the brackets are provided with a fixed shaft 3 for connecting the filter wheel 2 or the guide wheel 1.

[0019] In some possible embodiments, the filter wheel is provided with a winding groove for accommodating steel wire in the circumferential direction; In this embodiment, a portion of the steel wire 001 is contained within the winding groove to prevent the steel wire 001 from detaching from the filter wheel 2 during rotation.

[0020] See Figure 4 In some possible embodiments, in order to tension the steel wire on the guide wheel 1, this embodiment discloses that the guide wheel 1 includes: a wheel body 13, the wheel body 13 having a winding groove 14 in the circumferential direction, the wheel body 13 being rotatably mounted on a fixed shaft 3, a sleeve 15 being provided on one side of the wheel body 13, the sleeve 15 being sleeved on the fixed shaft 3, and a torsion spring 16 being provided between the sleeve 15 and the fixed shaft 3; a pressure rod assembly 17 is provided radially outward on the outer peripheral wall of the sleeve 15, the pressure rod assembly 17 being able to rotate along the circumferential direction of the wheel body 13 under the action of the torsion spring 16, so that the steel wire 001 is always wound around the wheel body 13 by changing the position of the steel wire 001 and the third guide end 11 of the wheel body 13.

[0021] In this embodiment, the flat wheel 02 is freely rotatably mounted on the fixed shaft 3. A sleeve 15 is provided on the outer side of the flat wheel 02 along its axial direction. A torsion spring 16 is provided between the sleeve 15 and the fixed shaft 3. One end of the torsion spring 16 is connected to the fixed shaft 3, and the other end of the torsion spring 16 is connected to the sleeve 15. The pressure rod assembly 17 is approximately L-shaped. The other end of the pressure rod assembly 17 is parallel to the axial direction of the wheel body 13 and is located on the outer side of the wheel body 13. See Figure 3 When the steel wire 001 is in a taut state, the steel wire 001 moves vertically upward and is wound around the winding groove 14 of the wheel body from the third inlet end 001. At this time, the pressure rod assembly 17 is in a horizontal right-hand position and points to the 9 o'clock position. The steel wire 001 is pressed onto the third inlet end 11 by the pressure rod assembly 17. At this time, the torsion spring 16 has torque and is in a balanced state against the tension of the steel wire 001. See Figure 5 When steel wire 001 is in a loose state, the tension of steel wire 001 decreases. See [link / reference]. Figure 6 The torsion spring 16 releases torque instantly, causing the sleeve 15 and the pressure rod assembly 17 to rotate clockwise. For example, the pressure rod assembly 17 rotates to the 7 o'clock position. At this time, the third inlet end 11 switches to the 7 o'clock position, and the loose part of the steel wire 001 is wound around the wheel body 13. The steel wire 001 is then tensioned and wound around the wheel body 13 again to prevent the steel wire 001 from jumping due to loosening during the winding process. In other words, the rotation of the pressure rod assembly 17 is achieved by the torque of the torsion spring 16, which compensates for the loose steel wire 001 and tensions the steel wire 001 and winds it tightly around the wheel body 13. It should be noted that since the sleeve 15 and the wheel 13 are both concentrically arranged around the center line of the fixed shaft 3, the distance between the pressure rod assembly 17 and the outer peripheral wall of the wheel 13 will not change during the rotation compensation process, thus preventing the steel wire 001 from separating from the wheel 13. See Figure 4 In some possible embodiments, to illustrate the specific structure of the pressure bar assembly 17, this embodiment uses the pressure bar assembly 17 as including: a radial rod 41, one end of which is connected to the sleeve 15, and the other end extending radially outward from the wheel body 13; an axial rod 42 is arranged perpendicularly to the end of the radial rod 41, and a gap for pressing steel wire is formed between the axial rod 42 and the outer peripheral wall of the wheel body 13; In this embodiment, the radial rod 41 serves to connect the axial rod 42 and the sleeve 15, and the axial rod 42 presses the steel wire 001 into the winding groove of the wheel body 13.

[0022] See Figure 4In some possible embodiments, in order to elastically press the steel wire 001 onto the wheel body 13 with the axial rod 42, this embodiment uses a slider 43 on the radial rod 41, a limit block 44 at the end of the radial rod 41, and a spring 45 sleeved on the radial rod 41 between the limit block 44 and the slider 43; one end of the axial rod 42 is fixedly connected to the slider 43, and under the action of the spring 45, the axial rod 42 keeps the steel wire 001 pressed onto the wheel body 13 at all times; In this embodiment, a slider 43 is slidably disposed on the radial rod 41. The slider 43 is connected to the axial rod 42, and the axial rod 42 can move radially relative to the radial rod 41. A spring 45 is disposed between the slider 43 and the limiting block 44. Through the elastic force released by the spring 45, the axial rod 42 can press the steel wire 001 onto the wheel body 13. Unlike the rigid connection between the axial rod 42 and the radial rod 41, and the inability to adjust the distance between the axial rod 42 and the wheel body 13, this solution can adjust the distance between the axial rod 42 and the wheel body 13. While pressing the steel wire 001 tightly onto the wheel body 13, it can prevent the axial rod 42 from bending due to the reverse force of the steel wire 001.

[0023] See Figure 4 In some possible embodiments, the axial rod 42 is rotatably connected to the slider 43; In this embodiment, a bearing is provided between the slider 43 and the end of the axial rod 42 to realize the rotation of the axial rod 42. In this way, during the process of the axial rod 42 pressing the steel wire 001, the contact position of the axial rod 42 can change relative to the steel wire 001, thus avoiding wear of the axial rod 42.

[0024] In some possible embodiments, the wheel 13 is axially limited on the fixed shaft 3 by the retaining rings 5 ​​on both sides; Two retaining rings 5 ​​are provided on the fixed shaft 3. The retaining rings 5 ​​restrict the axial displacement of the wheel body 13 in the direction of the fixed shaft 3. The retaining rings 5 ​​do not restrict the free rotation of the wheel body 13.

[0025] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A filter-type flat wheel assembly, characterized in that, include: A flat wheel has a filter wheel on its bottom right side and an guide wheel on its bottom left side; the steel wire is wound around the guide wheel and the filter wheel and then wound up by the flat wheel. The horizontal right side of the flat wheel is the first input end, and the horizontal right side of the filter wheel is the second output end, with the second output end located directly below the first input end; When the steel wire at the bottom of the third inlet end of the inlet wheel or between the inlet wheel and the filter wheel becomes loose, the filter wheel prevents the jumping steel wire from transmitting the jumping wave backward, so as to keep the part of the steel wire located between the first inlet end and the second outlet end taut.

2. The filter-type flat wheel assembly according to claim 1, characterized in that, The inlet wheel and filter wheel are rotatably mounted on the wall via corresponding brackets.

3. The filter-type flat wheel assembly according to claim 1, characterized in that, The filter wheel is provided with a winding groove on its circumference to accommodate the steel wire.

4. The filter-type flat wheel assembly according to claim 1, characterized in that, The guide wheel includes: a wheel body, a winding groove is provided on the circumference of the wheel body, the wheel body is rotatably mounted on a fixed shaft, a sleeve is provided on one side of the wheel body, the sleeve is sleeved on the fixed shaft, and a torsion spring is provided between the sleeve and the fixed shaft; The outer peripheral wall of the sleeve is provided with a pressure rod assembly extending radially outward. The pressure rod assembly can rotate along the circumference of the wheel body under the action of the torsion spring. By changing the position of the steel wire and the third inlet end of the wheel body, the steel wire is always wound around the wheel body.

5. The filter-type flat wheel assembly according to claim 4, characterized in that, The pressure bar assembly includes: a radial rod, one end of which is connected to the sleeve, and the other end of which extends radially out of the wheel body; The ends of the axial rod and the radial rod are arranged perpendicularly, and a gap is formed between the axial rod and the outer peripheral wall of the wheel body to press in the steel wire.

6. The filter-type flat wheel assembly according to claim 5, characterized in that, A slider is provided on the radial rod, a limit block is provided at the end of the radial rod, and a spring is sleeved on the radial rod between the limit block and the slider. One end of the axial rod is fixedly connected to the slider. Under the action of the spring, the axial rod keeps the steel wire pressed against the wheel.

7. The filter-type flat wheel assembly according to claim 6, characterized in that, The axial rod is rotatably connected to the slider.

8. The filter-type flat wheel assembly according to claim 4, characterized in that, The wheel is axially limited on the fixed shaft by snap rings on both sides.

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