A floating meshing gear rack drive device

Abstract

The embodiment of the present invention discloses a floating meshing rack and pinion drive device, including a driving mechanism, a rack mechanism, a floating mechanism and a machine base; the lower end of the driving mechanism is connected to the machine base through a floating mechanism; the driving mechanism includes a driving gear, the driving gear is meshed with the rack mechanism, and the driving gear floats with the rack mechanism, and the driving gear transmits power to the rack mechanism. In this floating meshing rack and pinion device, the driving box acts on the rack mechanism through a wheel set to achieve the purpose of positioning and guiding, ensure accurate and reliable meshing between the rack and pinion, and is connected to the fixed machine base through a floating mechanism, so that the driving gear floats with the rack mechanism to adapt to larger structural deformation and installation errors, and meet the position fluctuation and small stroke lifting function requirements of the opening and closing roof.

Description

Technical Field

[0001] The invention relates to a driving device technology for an opening and closing roof, and in particular to a floating meshing gear rack driving device. Background Art

[0002] With the official release of the national industry standard "Technical Standard for Retractable Roof Structures", retractable roofs are increasingly widely used in China. The commonly used driving methods for retractable roofs are: wheel drive, winch wire rope drive, sprocket chain drive and gear rack drive. Among them, gear rack drive is the most commonly used driving method with high precision, safety and reliability. Due to the large deformation and installation error between the retractable roof and the fixed supporting structure, the movable roof supported by the trolley cannot guarantee the precise position relationship with the supporting structure. It is difficult to meet the meshing accuracy requirements by using a simple gear rack meshing structure. Therefore, the concept of a floating meshing drive device is proposed. Its meshing transmission part relies on the precise positioning of the wheel set on the rack mechanism, and is connected to the other end by a floating mechanism to transmit the driving force, eliminating the influence of structural deformation and installation errors. The floating mechanism we have adopted in the project is a floating meshing drive device with ball joints at both ends. The wheel set is relatively complicated, and the structural dimensions of the drive device along the rack direction are large, which affects the opening and closing stroke. At the same time, the rack mechanism needs to withstand torsional torque and the cross-sectional dimensions are also large. It is not suitable for retractable roof projects with compact structure, high standard requirements, and exquisite appearance. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a fixed supporting structure, namely a floating meshing gear rack drive device, which has a compact structure and a simple gear wheel set arrangement and is suitable for high-precision and high-standard opening and closing roof requirements.

[0004] In order to solve the above technical problems, the purpose of the present invention is achieved through the following technical solutions:

[0005] A floating meshing rack and pinion drive device is provided, comprising a driving mechanism, a rack mechanism, a floating mechanism and a machine base; the lower end of the driving mechanism is connected to the machine base via the floating mechanism; the driving mechanism comprises a driving gear, the driving gear is meshed with the rack mechanism, and the driving gear floats with the rack mechanism, and the driving gear transmits power to the rack mechanism.

[0006] Its further technical solution is that the driving mechanism also includes a driving motor, a reducer, a driving box and a driving shaft; the driving motor is connected to the driving shaft through the reducer, the driving shaft passes through and is installed on the driving box, and the driving gear is mounted on the outer ring of the driving shaft.

[0007] Its further technical solution is that the drive box includes a front side panel, a rear side panel, a left side panel and a right side panel, and a accommodating space is enclosed between each side panel, and a plurality of gear assemblies are installed in the accommodating space; the front side panel and the rear side panel are both inverted L-shaped panels.

[0008] Its further technical solution is that the rack mechanism includes a rack and an H-shaped rack beam, the rack is tightly attached to the lower wing edge plate of the H-shaped rack beam, and the rack and the H-shaped rack beam are connected to form an integral structure; the lower wing edge plate of the H-shaped rack beam serves as a positioning and guide track for each gear assembly on the drive box.

[0009] Its further technical solution is that the drive box is also provided with a group of supporting gears, a group of positioning gears and two groups of horizontal gears; the positioning gears are symmetrically arranged on the front and rear sides of the drive gear on the drive shaft, the supporting gears are symmetrically arranged on the front and rear sides directly above the drive gear, and the horizontal gears are respectively arranged in pairs at relative positions of the front side plate and the rear side plate of the drive box; the supporting gears, positioning gears and horizontal gears all act on the lower wing edge plate of the H-shaped rack beam of the rack mechanism, and the lower wing edge plate of the H-shaped rack beam positions and guides the drive box to ensure precise meshing of the drive gear and the rack.

[0010] Its further technical solution is that the floating mechanism includes an articulated seat, a group of vertical hinge shafts, two groups of horizontal hinge shafts, two groups of vertical connecting plates and two U-shaped rotating blocks; one end of the floating mechanism is connected to the machine base by bolts through the articulated seat, and the other end is hinged to the drive box by the vertical hinge shaft.

[0011] Its further technical solution is that a group of vertical connecting plates on the floating mechanism and two U-shaped rotating blocks form a parallelogram mechanism in a vertical plane through two groups of horizontal hinge shafts; the U-shaped rotating block forms a horizontally rotating double-hinged mechanism with the hinge seat and the drive box respectively through a group of vertical hinge shafts; the parallelogram mechanism is used to drive the drive box to move up and down, and the horizontally rotating double-hinged mechanism is used to drive the drive box to move left and right and rotate around the vertical direction.

[0012] Its further technical solution is that the gear rack drive device also includes a detection mechanism, which includes a transition gear, a core shaft, a terminal gear and a rotating shaft assembly; the core shaft and the rotating shaft assembly are respectively parallel to the driving shaft; the outer ring of the core shaft is provided with a transition gear, and the outer ring of the rotating shaft assembly is provided with a terminal gear; the driving gear is meshed with the transition gear, and the transition gear is meshed with the terminal gear, forming a structure in which three groups of gears are meshed in sequence.

[0013] A further technical solution is that the detection mechanism also includes an encoder, the shaft of the encoder is connected to the rotating shaft assembly and rotates with the driving gear, and the encoder is used to detect the stroke and position of the driving operation.

[0014] A further technical solution is that the detection mechanism also includes a protective cover arranged on the outer ring of the encoder.

[0015] The floating meshing rack and pinion drive device provided by the present invention has the following advantages over the prior art: in the present floating meshing rack and pinion drive device, the drive box acts on the rack mechanism through the gear wheel set to achieve the purpose of positioning and guiding, thereby ensuring accurate and reliable meshing between the gear and the rack, and is connected to the fixed machine base through the floating mechanism, so that the drive gear of the drive box floats with the rack mechanism to adapt to larger structural deformations and installation errors, and meet the position fluctuations and small stroke lifting and lowering function requirements of the opening and closing roof.

[0016] The floating mechanism adopts a parallelogram mechanism in the vertical plane and a double-hinged mechanism rotating around the vertical axis. The drive box can only move up and down, left and right, and rotate around the vertical axis. While meeting the floating engagement requirements, it limits the freedom of the drive box to the greatest extent, thereby achieving two purposes: 1. Fewer positioning gear wheels and guide gear wheels are set on the drive box, so that the entire gear rack drive device has a compact structure and small size along the rack direction, and the driving stroke is increased; 2. It ensures that the drive box will not tilt due to the eccentric gravity of the motor and the reducer, avoids the rack mechanism from being subjected to a large torsional torque, and reduces the cross-sectional size of the rack mechanism.

[0017] The present invention discloses a floating meshing gear rack drive device, which can adapt to the larger structural deformation and installation error existing in the retractable roof structure system, ensure the accuracy and reliability of the gear rack meshing transmission, and meet the position fluctuation and small stroke lifting function requirements of the retractable roof, and at the same time make the structure of the entire drive device and the rack mechanism compact, small in size, and convenient for layout, increase the driving stroke, and achieve a delicate and beautiful effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of the shaft side structure of the floating meshing rack and pinion drive device (with the rack mechanism omitted) provided by the present invention;

[0020] Figure 2 for Figure 3 The cross-sectional AA structure diagram shown;

[0021] Figure 3 for Figure 2 The cross-section BB structure diagram shown;

[0022] Figure 4 for Figure 3 The cross-sectional CC structure diagram shown;

[0023] Figure 5 for Figure 3 The cross-sectional DD structure diagram is shown.

[0024] Description of the symbols in the figure:

[0025] 1. Driving motor; 2. Speed ​​reducer; 3. Driving box; 4. Supporting gear; 5. Rack; 6. H-shaped rack beam; 7. Horizontal gear; 8. Positioning gear; 9. Driving gear; 10. Driving shaft; 11. Bearing assembly; 12. Floating mechanism; 13. Detection mechanism; 14. Machine base;

[0026] 1201, hinge seat; 1202, vertical hinge shaft; 1203, horizontal hinge shaft; 1204, vertical connecting plate; 1205, U-shaped rotating block;

[0027] 1301, transition gear; 1302, end gear; 1303, core shaft; 1304, rotating shaft assembly; 1305, encoder; 1306, protective cover. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0030] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0031] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0032] See also Figure 1 , Figure 1 The present invention provides a floating meshing rack and pinion drive device, in which the axial structure schematic diagram after the rack mechanism is hidden is shown in the figure. As shown in the figure, the drive box 3 includes a front side plate, a rear side plate, a left side plate and a right side plate. The front side plate and the rear side plate are symmetrical and are both L-shaped panels (i.e., a 7 shape). The lower end of the drive box 3 is connected to the base 14 through a floating mechanism 12. The components arranged on the drive box 3 include a drive gear 9. The drive gear 9 floats with the rack mechanism, thereby ensuring accurate and reliable meshing of the drive gear and the rack to adapt to larger structural deformations and installation errors. The floating meshing structure meets the position fluctuation and small stroke lifting function requirements of the opening and closing roof.

[0033] See also Figure 2 , Figure 2 for Figure 3 The cross-sectional AA structural diagram shown; the rack mechanism includes a rack 5 and an H-shaped rack beam 6, the rack 5 is tightly attached to the middle position below the lower wing edge plate of the H-shaped rack 6, and the rack 5 and the H-shaped rack beam 6 are connected to form an integral rack mechanism, and the lower wing edge plate of the H-shaped rack beam 6 serves as a positioning and guide track for each gear wheel set on the drive box.

[0034] The driving box 3 is provided with a driving motor 1 , a speed reducer 2 , a driving shaft 10 , a driving gear 9 , and a bearing assembly 11 . The driving box 3 transmits power to the rack mechanism through the driving gear 9 .

[0035] A group of supporting gears 4, a group of positioning gears 8 and two groups of horizontal gears 7 are arranged on the driving box 3; a group of positioning gears 8 are symmetrically arranged on the driving shaft 10 and are arranged on the front and rear sides of the driving gear 9; a group of supporting gears 4 are arranged directly above the driving gear 9 and are arranged on the front and rear sides; two groups of horizontal gears 7 are arranged in pairs at relative positions of the front side plate and the rear side plate of the driving box 3, and each gear assembly acts on the lower wing edge plate of the H-shaped rack beam 6 of the rack mechanism, and the lower wing edge plate of the H-shaped rack beam 6 positions and guides the driving box 3 to ensure the precise meshing of the driving gear 9 and the rack 5.

[0036] See also Figure 3-Figure 5 As shown in the figure, the floating mechanism 12 includes an articulated seat 1201, a group of vertical hinge shafts 1202, two groups of horizontal hinge shafts 1203, a group of vertical connecting plates 1204, and a group of U-shaped rotating blocks 1205. One end of the floating mechanism 12 is connected to the machine base 14 by bolts through the articulated seat 1201, and the other end of the floating mechanism 12 is directly hinged to the drive box 3 by the vertical hinge shaft 1202.

[0037] A set of vertical connecting plates 1204 and a set of U-shaped rotating blocks 1205 on the floating mechanism 12 form a parallelogram mechanism in a vertical plane through two sets of horizontal hinge shafts 1203; the U-shaped rotating blocks at both ends of the floating mechanism 12 respectively form a double hinge mechanism with the hinge seat 1201 and the drive box 3 through a set of vertical hinge shafts 1202. The formed parallelogram mechanism realizes the up and down translation of the drive box 3, and the double hinge mechanism of horizontal rotation realizes the left and right movement of the drive box 3 and the rotation around the vertical axis. Through the up and down translation, left and right movement and rotation around the vertical axis, the function of the drive box 3 floating with the rack mechanism is met, and at the same time, the rotational freedom of the drive box 3 in the other two directions is limited, ensuring that the drive box 3 will not tilt due to the eccentric gravity of the motor and the reducer, avoiding the rack mechanism from bearing a large torsional torque, and extending the service life of the mechanism.

[0038] The detection mechanism 13 is composed of a transition gear 1301, a core shaft 1303, a final gear 1302, a rotating shaft assembly 1304, an encoder 1305, a protective cover 1306 and other components arranged on the drive box 3. The core shaft 1303 and the rotating shaft assembly 1304 are parallel to the drive shaft 10. The transition gear 1301 mounted on the core shaft 1303 is meshed with the final gear 1302 and the drive gear 9 mounted on the rotating shaft assembly 1304 at the same time. The shaft of the encoder 1305 is connected to the rotating shaft assembly 1304 and rotates with the drive gear 9 to detect the stroke and position of the drive operation. The detection mechanism 13 is arranged on the drive box 3, which can detect the stroke and position of the drive operation in real time. Through two sets of shafts and gear sets parallel to the drive gear 9, the rotational motion of the drive gear 9 is transmitted to the shaft of the encoder 1305, so that the stroke and position of the drive gear 9 are detected through the encoder 1305.

[0039] The outside of the encoder 1305 is also covered with a protective cover 1306. Through the protection of the protective cover 1306, the encoder 1305 is isolated from the adverse effects that may be caused by impurities such as dust in the external environment on the detection accuracy of the encoder 1305, thereby protecting the product detection accuracy and extending the service life of the encoder 1305.

[0040] The floating meshing rack and pinion drive device provided in this embodiment can adapt to the larger structural deformation and installation errors existing in the retractable roof structure system, ensure the accuracy and reliability of the rack and pinion meshing transmission, and meet the position fluctuation and small stroke lifting function requirements of the retractable roof, while at the same time making the structure of the entire drive device and the rack mechanism compact, small in size, and easy to arrange, thereby increasing the drive stroke and achieving an exquisite and beautiful effect.

[0041] The driving box acts on the rack mechanism through the gear wheel set to achieve the purpose of positioning and guiding, ensuring the precise and reliable meshing between the gear and the rack, and is connected to the fixed machine base through the floating mechanism, so that the driving gear of the driving box floats with the rack mechanism to adapt to larger structural deformation and installation errors, and meet the position fluctuation and small stroke lifting function requirements of the opening and closing roof; the floating mechanism adopts a parallelogram mechanism in the vertical plane and a double hinge mechanism rotating around the vertical axis. The driving box can only move up and down, left and right and rotate around the vertical axis, which meets the floating meshing requirements while limiting the degree of freedom of the driving box to the greatest extent, thereby achieving two purposes: 1. Fewer positioning gear wheel sets and guide gear wheel sets are set on the driving box, so that the entire gear rack drive device has a compact structure and small size along the rack direction, and the driving stroke is increased; 2. It ensures that the driving box will not tilt due to the eccentric gravity of the motor and the reducer, avoids the rack mechanism from being subjected to a large torsional torque, and reduces the cross-sectional size of the rack mechanism.

[0042] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A floating meshing gear rack drive device, characterized in that: It includes a driving mechanism, a rack mechanism, a floating mechanism and a machine base; one end of the driving mechanism is connected to the machine base through a floating mechanism; the driving mechanism includes a driving gear, the driving gear is meshed with the rack mechanism, and the driving gear floats with the rack mechanism, and the driving gear transmits power to the rack mechanism, and the driving mechanism also includes a driving motor, a reducer, a driving box and a driving shaft; the driving motor is connected to the driving shaft through the reducer, the driving shaft passes through and is installed on the driving box, and the driving gear is sleeved on the outer ring of the driving shaft, and the floating mechanism includes an articulated seat, a group of vertical hinge shafts, two groups of horizontal hinge shafts, two groups of vertical connecting plates and two U-shaped rotating blocks; one end of the floating mechanism is connected to the machine base by a hinged seat through bolts The front and rear side panels are connected, and the other end is hinged to the drive box by a vertical hinge shaft; the drive box comprises a front side panel, a rear side panel, a left side panel and a right side panel, and a containing space is surrounded between each side panel, and a plurality of gear assemblies are installed in the containing space; the front side panel and the rear side panel are both inverted L-shaped panels; a group of vertical connecting plates on the floating mechanism and two U-shaped rotating blocks form a parallelogram mechanism in a vertical plane through two groups of horizontal hinge shafts; the U-shaped rotating block forms a horizontally rotating double-hinged mechanism with the hinge seat and the drive box respectively through a group of vertical hinge shafts; the parallelogram mechanism is used to drive the drive box to move up and down, and the horizontally rotating double-hinged mechanism is used to drive the drive box to move left and right and rotate around the vertical direction.

2. The floating meshing rack and pinion drive device according to claim 1, characterized in that: The rack mechanism includes a rack and an H-shaped rack beam. The rack is connected to the H-shaped rack beam as an integral structure, and the rack is tightly attached to the lower wing edge plate of the H-shaped rack beam; the lower wing edge plate of the H-shaped rack beam serves as a positioning and guide track for each gear assembly on the drive box.

3. The floating meshing rack and pinion drive device according to claim 2, characterized in that: The drive box is also provided with a group of supporting gears, a group of positioning gears and two groups of horizontal gears; the positioning gears are symmetrically arranged on the front and rear sides of the drive gear on the drive shaft, the supporting gears are symmetrically arranged on the front and rear sides directly above the drive gear, and the horizontal gears are arranged in pairs at relative positions of the front side plate and the rear side plate of the drive box; the supporting gears, positioning gears and horizontal gears all act on the lower wing edge plate of the H-shaped rack beam of the rack mechanism, and the lower wing edge plate of the H-shaped rack beam positions and guides the drive box to ensure accurate meshing of the drive gear and the rack.

4. The floating meshing rack and pinion drive device according to claim 1, characterized in that: The rack and pinion drive device also includes a detection mechanism, which includes a transition gear, a core shaft, a terminal gear and a rotating shaft assembly; the core shaft and the rotating shaft assembly are respectively parallel to the driving shaft; the core shaft outer ring is sleeved with a transition gear, and the rotating shaft assembly outer ring is sleeved with a terminal gear; the driving gear is meshed with the transition gear, and the transition gear is meshed with the terminal gear, forming a structure in which three groups of gears are meshed in sequence.

5. The floating meshing rack and pinion drive device according to claim 4, characterized in that: The detection mechanism also includes an encoder, the shaft of which is connected to the rotating shaft assembly and rotates with the driving gear. The encoder is used to detect the stroke and position of the driving operation.

6. The floating meshing rack and pinion drive device according to claim 5, characterized in that: The detection mechanism also includes a protective cover which is arranged on the outer ring of the encoder.

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