Pneumatic adjusting rotating mechanism

Abstract

The utility model provides a pneumatic adjusting rotating mechanism which comprises a base and a rotating object rotationally connected with the base through a rotating shaft, and is characterized in that the pneumatic adjusting rotating mechanism further comprises a pneumatic driving assembly and a double-track transmission assembly; the double-track transmission assembly is connected with the rotating shaft, and the pneumatic driving assembly is connected with the double-track transmission assembly to drive the double-track transmission assembly to move, so that the rotating object is driven by the rotating shaft to rotate relative to the base. The utility model relates to the technical field of in-vehicle accessories, and can solve the problem that in the prior art, an in-vehicle mechanical rotating mechanism cannot be controlled in a pneumatic driving mode.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle interior accessories, in particular to a pneumatic regulating rotating mechanism. Background Art

[0002] At present, pneumatic drive technology is generally used in components such as lumbar support, massage, and side wing support of car seats. For cup holders, makeup mirrors, small table boards, small armrests, storage boxes, etc. in the car, which require mechanical rotation mechanisms, there are no related applications of pneumatic drive. The existing in-car mechanical rotation mechanisms can only be rotated manually or electrically. Therefore, it is necessary to provide a pneumatic adjustment rotation mechanism that can solve the problem that the in-car mechanical rotation mechanisms in the prior art cannot be pneumatically driven and controlled. Utility Model Content

[0003] In view of the above situation, the utility model provides a pneumatic adjustment rotation mechanism, which can solve the problem in the prior art that the mechanical rotation mechanism in the vehicle cannot be pneumatically driven and controlled.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a pneumatic adjustment rotating mechanism, including a base, and a rotating object rotatably connected to the base through a rotating shaft, the pneumatic adjustment rotating mechanism also includes an air drive assembly and a double-track transmission assembly; the double-track transmission assembly is connected to the rotating shaft, and the air drive assembly is connected to the double-track transmission assembly to drive the double-track transmission assembly to move, and then drive the rotating object to rotate relative to the base through the rotating shaft.

[0005] In an embodiment of the utility model, the dual-track transmission assembly includes a guide rail configured to be linearly movable and a rotatable slide rail, and a slider that passes through the slide rail and the guide rail at the same time; the rotating shaft is connected to the slide rail, and when the guide rail is driven by the air drive assembly to move linearly, the slide rail is driven to rotate through the slider, and the rotating object is driven to rotate through the rotating shaft.

[0006] In the embodiment of the utility model, a stop point is formed on the guide rail, and when the rotating object rotates to the use position, the slide rail abuts against the stop point to limit the rotating object.

[0007] In an embodiment of the utility model, the air drive assembly includes a vehicle-mounted air source, a box body and a piston; the piston is slidably arranged in the box body, the box body includes a front air inlet and a rear air inlet, and the vehicle-mounted air source is respectively connected to the front air inlet and the rear air inlet.

[0008] In an embodiment of the utility model, the pneumatic regulating rotating mechanism further comprises a second guide rod, one end of the second guide rod is connected to the piston, and the other end is connected to the guide rail, so that the pneumatic drive assembly drives the guide rail to move linearly.

[0009] In an embodiment of the utility model, the dual-track transmission assembly also includes a guide rail bracket, the rotating shaft passes through the guide rail bracket and is fixedly connected to the slide rail, and the guide rail bracket is also provided with a second through hole for the second guide rod to pass through, so as to guide the linear movement of the second guide rod.

[0010] In an embodiment of the utility model, the pneumatic regulating rotating mechanism further comprises an electric speed control module, and the electric speed control module is connected to the motor of the vehicle-borne air source and is used to control the speed of the motor of the vehicle-borne air source.

[0011] In an embodiment of the utility model, the pneumatic regulating rotating mechanism also includes a mechanical speed regulating component, which includes a cam and a tension spring; the cam is installed on the side of the guide rail away from the slide rail, the tension spring is connected between the slider and the guide rail, and the slider maintains sliding contact with the outer contour edge of the cam.

[0012] In an embodiment of the utility model, the outer contour edge of the cam includes a plurality of speed regulating guide arcs that are in sliding contact with the slider, and the distance between each speed regulating guide arc and the rotation center of the cam is different.

[0013] In an embodiment of the utility model, the mechanical speed regulating assembly further comprises a cam bracket for supporting the cam and a knob arranged on the cam, wherein the knob is fixedly connected to the cam to adjust the rotation of the cam relative to the cam bracket.

[0014] The utility model adopts the above technical solution, so that it has the following beneficial effects:

[0015] (1) The utility model is provided with an air drive assembly, which can drive the rotating shaft to rotate by air pressure, thereby realizing the rotation control of the mechanical rotating mechanism, i.e., the rotating object, in the automobile, and fills the gap in the prior art that the mechanical rotating mechanism in the automobile has no air drive control; at the same time, the air drive assembly can share the air source with other existing air-driven functional components in the automobile, saving space and cost, and has the advantages of low noise and light weight.

[0016] (2) The utility model is provided with a double-track transmission assembly, the guide rail realizes linear motion through the air drive assembly, the slide rail is fixedly connected to the rotating shaft of the rotating object, and under the linkage movement of the slide rail, the guide rail and the slider, the linear motion of the guide rail is converted into the rotational motion of the slide rail, thereby realizing the rotation opening and rotation closing functions of the rotating object. The utility model can be applied to mechanisms that require mechanical rotation, such as cup holders, makeup mirrors, small table tops, small armrests, storage boxes, etc., and has a wide range of applicable scenarios.

[0017] (3) The utility model is provided with an electric speed control component or a mechanical speed control component. The electric speed control module controls the air flow speed of the air drive component through the PMW technology to control the rotation speed of the rotating object. The mechanical speed control component adjusts the motion trajectory length of the slider through the sliding contact between the speed control guide arc on the external cam and the slider, thereby controlling the rotation speed of the rotating object. The control method is flexible and the speed control operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the installation of the pneumatic regulating rotating mechanism of the utility model (the rotating object is in the closed position);

[0019] Figure 2 This is a schematic diagram of the installation of the pneumatic regulating rotating mechanism of the utility model (the rotating object is located in the middle position);

[0020] Figure 3 This is a schematic diagram of the installation of the pneumatic regulating rotating mechanism of the utility model (the rotating object is located in the use position);

[0021] Figure 4 It is the front view of the pneumatic regulating rotating mechanism of the utility model (closed position);

[0022] Figure 5 This is the front view of the pneumatic regulating rotating mechanism of the utility model (the intermediate position between closing and using);

[0023] Figure 6 This is the front view (in use position) of the pneumatic regulating rotating mechanism of the utility model;

[0024] Figure 7 It is an exploded view of the pneumatic regulating rotating mechanism of the utility model (based on electric control speed regulation);

[0025] Figure 8 It is an assembly exploded view of the bracket, the rotating disk and the rotating shaft in the pneumatic regulating rotating mechanism of the utility model;

[0026] Fig. 9 It is a schematic diagram of the assembly of the pneumatic regulating rotating mechanism and the rotating shaft of the utility model;

[0027] Fig.10 It is a schematic diagram of the limit position of the blocking point and the slide rail in the pneumatic regulating rotating mechanism of the utility model;

[0028] Fig.11 It is a cross-sectional view of the box, piston and guide rail in the pneumatic regulating rotating mechanism of the utility model;

[0029] Fig.12 This is a working principle diagram of the pneumatic regulating rotating mechanism of the utility model based on electric control speed regulation;

[0030] Fig.13 It is an exploded view of the pneumatic regulating rotating mechanism of the utility model (based on mechanical control speed regulation);

[0031] Fig.14 It is a three-dimensional diagram of the mechanical speed regulating assembly in the pneumatic regulating rotating mechanism of the utility model;

[0032] Fig.15 It is a schematic diagram of the installation of the tension spring in the pneumatic regulating rotating mechanism of the utility model;

[0033] Fig.16 It is a schematic diagram of the mechanical speed regulation working process of the pneumatic regulating rotating mechanism of the utility model, wherein (a) is the closed position, and (b) is the use position (the first guide arc is against the slider);

[0034] Fig.17 It is a schematic diagram of the mechanical speed regulation working process of the pneumatic regulating rotating mechanism of the utility model, wherein (c) is the closed position and (d) is the use position (the second guide arc is against the slider).

[0035] The corresponding relationship between the reference numerals and the components is as follows:

[0036] 1 guide rail bracket, 11 first through hole, 12 second through hole, 21 turntable, 211 connecting shaft seat, 22 slide rail, 31 slider, 32 slider seat, 41 first guide rod, 42 guide rail, 421 stop point, 43 second guide rod, 51 box body, 511 front air inlet, 512 rear air inlet, 52 piston, 53 vehicle power supply, 61 cam, 611 speed control guide arc, 62 knob, 7 cam bracket, 8 tension spring, 9 rotating shaft, 91 spline, 10 base, 101 rotating object. DETAILED DESCRIPTION

[0037] To facilitate understanding of the present invention, the following description is provided in conjunction with the accompanying drawings and embodiments.

[0038] Please see attached Figure 7 and attached Fig.13A pneumatic adjustment rotating mechanism includes a base 10 and a rotating object 101 rotatably connected to the base 10 via a rotating shaft 9. The pneumatic adjustment rotating mechanism also includes an air drive assembly and a double-track transmission assembly; the double-track transmission assembly is connected to the rotating shaft 9, and the air drive assembly is connected to the double-track transmission assembly to drive the double-track transmission assembly to move, and then drive the rotating object 101 to rotate relative to the base 10 via the rotating shaft 9.

[0039] The air drive assembly uses the vehicle-mounted air source to provide power and transmits the power to the double-track transmission assembly. The input action of the double-track transmission assembly is linear motion, and the output action of the double-track transmission assembly is rotational motion. Under the transmission of the double-track transmission assembly, the rotating shaft 9 is driven to rotate, so that the rotating object 101 rotates synchronously with the rotating shaft 9 relative to the base 10, thereby realizing the air-driven rotation function of the rotating object 101.

[0040] Since most of the existing automobiles are equipped with functional components controlled by air pumps, such as waist support components and side airbags, the air drive component can share an air pump, i.e., the vehicle-mounted air source, with the existing functional components, and there is no need to install an additional air source. If the vehicle is not equipped with an air source, a small air pump can be installed as the vehicle-mounted air source in the air drive component to meet the air supply requirements.

[0041] The rotating object 101 may be a cup holder, a makeup mirror, a small table top, a small armrest, a storage box, etc., which require a mechanical rotating mechanism inside the car and has a wide range of applicable scenarios.

[0042] Please see attached Figure 4 To Attachment Figure 7 and attached Fig.13 The double-track transmission assembly includes a guide rail 42 configured to be linearly movable and a rotatable slide rail 22, and a slider 31 that passes through the slide rail 22 and the guide rail 42 at the same time; the rotating shaft 9 is connected to the slide rail 22. When the guide rail 42 is driven by the air drive assembly to move linearly, the slide rail 22 is driven to rotate through the slider 31, and the rotating object 101 is driven to rotate through the rotating shaft 9 connected to the slide rail 22.

[0043] Under the action of the air drive assembly, the air drive force is transmitted to the guide rail 42 by using the air pressure change, so as to realize the linear motion of the guide rail 42 as the input action of the double-track transmission assembly. The linear motion of the guide rail 42 exerts a force on the slider 31 along the direction of the second guide rod 43.

[0044] Since one end of the slide rail 22 is connected to the rotating object 101 through the rotating shaft 9, the rotating object 101 is installed inside the car through the base 10 and can only do rotational movement, thereby limiting the slide rail 22 to only do rotational movement. At the same time, since the slider 31 passes through the guide rail 42 and the slide rail 22 at the same time, under the restriction and guidance of the guide rail 42 and the slide rail 22, the slider 31 pushes the slide rail 22 to rotate around the rotating shaft 9, that is, the output action of the dual-track transmission assembly is rotational movement.

[0045] The motion trajectory of the slider 31 is the intersection trajectory of the moving trajectory of the guide rail 42 and the rotation trajectory of the slide rail 22. Preferably, the guide rail 42 and the slide rail 22 should have a certain length to ensure the linkage process of the slider 31, the guide rail 42 and the slide rail 22, thereby ensuring that the linear motion of the guide rail 42 is converted into the rotational motion of the slide rail 22, and then ensuring the rotation function of the rotating object 10.

[0046] The rotation angle of the rotating object 101 such as the cup holder is mostly 0° to 90°. Figure 1 To Attachment Figure 3 As shown, preferably, the guide rail 42 is arranged in a vertical direction, and the rotation range of the slide rail 22 is set to be in an angle range of -45° to 45° with the guide rail 42. The vertical guide rail and the oblique slide rail 22 are used to limit the slider 31 to ensure the stability of the rotating object 101 in the closed position and the use position. Figure 4 To Attachment Figure 6 shown.

[0047] Please see attached Fig.10 A stop point 421 is formed on one side of the guide rail 42 close to the slide rail 22 . When the slide rail 22 rotates to the use position, the slide rail 22 abuts against the stop point 421 to limit the rotating object 101 .

[0048] By setting the stop point 421, the rotation angle of the slide rail 22 relative to the guide rail 42 is limited. When the slide rail 22 abuts against the stop point 421, the slide rail 22 no longer rotates, thereby limiting the position of the rotating object 101 at the use position. The setting position of the stop point 421 can be adaptively set according to the rotation angle of the slide rail 22 and the use position of the rotating object 101.

[0049] Please see attached Fig.11 The air drive assembly includes a vehicle-mounted air source 53, a box body 51 and a piston 52; the piston 52 is slidably arranged in the air cavity of the box body 51, the box body 51 includes a front air inlet 511 and a rear air inlet 512, and the vehicle-mounted air source 53 is connected to the front air inlet 511 and the rear air inlet 512 respectively.

[0050] When the front air inlet 511 takes in air through the vehicle-mounted air source 53, the piston 52 moves toward the rear air inlet 512, and when the rear air inlet 512 takes in air, the piston 52 moves toward the front air inlet 511. The linear motion direction of the piston 52 is controlled by air intake in different directions, thereby driving the rotating shaft 9 to rotate in different directions, thereby realizing the rotation opening and rotation closing functions of the rotating object 101.

[0051] The pneumatic adjustment rotation mechanism further includes a second guide rod 43 , one end of which is connected to the piston 52 , and the other end of which is connected to the guide rail 42 , so that the pneumatic drive assembly drives the guide rail 42 to move linearly.

[0052] Preferably, one end of the second guide rod 43 is arranged in the box body 51. When the vehicle-mounted air source 53 supplies air, the air pressure change is used to drive the second guide rod 43 to perform linear motion through the piston 52. The air drive process is stable, reliable and highly controllable.

[0053] Please see attached Figure 8 and attached Fig. 9 The dual-track transmission assembly also includes a guide rail bracket 1, the rotating shaft 9 passes through the guide rail bracket 1 and is fixedly connected to the slide rail 22. The guide rail bracket 1 is also provided with a second through hole 12 for the second guide rod 43 to pass through, so as to guide the linear movement of the second guide rod 43.

[0054] Preferably, the guide rail bracket 1 is located between the slide rail 22 and the rotating object 10 and fixed inside the car, and the rotating shaft 9 passes through the guide rail bracket 1 and is connected to the slide rail 22. The guide rail bracket 1 is used to improve the connection and rotation stability between the slide rail 22 and the rotating shaft 9, and the shape of the guide rail bracket 1 can be adaptively adjusted according to actual installation requirements, such as a T-shaped structure.

[0055] When the utility model is applied to different types of rotating objects 101, the rotating object 101 needs to have different rotation speeds to improve the user experience. Preferably, the rotation opening and closing speed of the rotating object 101 can be controlled by a speed regulation method based on electrical control or a speed regulation method based on mechanical control.

[0056] The structure of the speed regulation method based on electric control is as follows:

[0057] The pneumatically regulated rotating mechanism further includes an electric speed control module, which is connected to the motor of the vehicle-borne air source 53 and is used to control the speed of the motor of the vehicle-borne air source 53 .

[0058] Preferably, the electric speed control module can adopt the existing PWM (Pulse Width Modulation) technology, and use the PWM technology to control the motor speed of the vehicle-mounted air source 53, so as to achieve different air volume outputs within the same time, and control the movement speed of the piston 52 and the second guide rod 43 through different air volume controls, thereby achieving the rotation speed control of the rotating shaft 9 and the rotating object 101.

[0059] Please see attached Fig.14 and attached Fig.15 , the structure of the speed regulation method based on mechanical control is as follows:

[0060] The pneumatic regulating rotating mechanism also includes a mechanical speed regulating component, which includes a cam 61 and a tension spring 8; the cam 61 is installed on the side of the guide rail 42 away from the slide rail 22, and the tension spring 8 is connected between the slider 31 and the guide rail 42 to ensure that the outer contour edge of the slider 31 and the cam 61 maintains sliding contact.

[0061] Preferably, protrusions can be provided on both sides of the bottom of the guide rail 42 to limit the lateral sliding of the pull-down point of the tension spring 8, and a groove can be provided on the slider 31 to embed the pull-up point of the tension spring 8 and limit the lateral sliding of the pull-up point of the tension spring 8, so as to ensure the stable installation of the tension spring 8 and prevent it from falling off. After installation, the tension spring 8 is in a stretched state, thereby providing a certain pulling force to the slider 31, so that the slider 31 can slide and press against the outer contour edge of the cam 61.

[0062] The slider 31 is simultaneously acted upon by the slide rail 22 , the guide rail 42 , the tension spring 8 and the cam 61 , so that the movement trajectory of the slider 31 is a trajectory formed by sliding along the outer contour edge of the cam 61 .

[0063] Under the condition that the closing position and the use position of the rotating object 101 are determined, for example, the rotation angle of the rotating object 101 from the closing position to the use position is 0° to 90°, and by using different shapes at the outer contour edge of the cam 61, the distance from the slider 31 to the rotation center of the cam 61 is also different accordingly, and the linear motion stroke of the second guide rod 43 is also different accordingly. The air-driven motion process of the second guide rod 43 is approximately regarded as uniform linear motion, so that the motion time of the second guide rod 43 is different. Since the motion time of the double-track transmission assembly is consistent with the motion time of the rotating object 101, the different shapes at the outer contour edge of the cam 61 can be used to adjust the motion time of the double-track transmission assembly, that is, to adjust the speed of the rotation opening or rotation closing of the rotating object 101.

[0064] Please see attached Fig.16 and attached Fig.17 The outer contour edge of the cam 61 includes a plurality of speed regulating guide arcs 611 that are in sliding contact with the slider 31, and each speed regulating guide arc 611 is at a different distance from the rotation center of the cam 61. Specifically, the speed regulating guide arc 611 is an arc with different radii formed with the rotation center of the cam 61 as the center.

[0065] According to the speed regulation requirements, the slider 31 can be brought into contact with the corresponding speed regulation guide arc 611, so that the slider 31 slides along the speed regulation guide arc to form a corresponding motion trajectory to control the movement time of the slider 31, that is, to control the movement time of the dual-track transmission assembly.

[0066] Please see attached Fig.13 To Attachment Fig.15 The mechanical speed regulating assembly also includes a cam bracket 7 for supporting the cam 61 and a knob 62 arranged on the cam 61. The knob 62 is fixedly connected to the cam 61 to adjust the rotation of the cam 61 relative to the cam bracket 7. The cam 61 is provided with a knob 62, which passes through the cam bracket 7, so that the cam 61 can be rotatably arranged on the cam bracket 7, and the speed regulating guide arc 611 abuts against the slider 31.

[0067] The setting of the knob 62 makes it easy to install the cam 61 on the cam bracket 7 , and also makes it easy to rotate and adjust the cam 61 so that different speed regulating guide arcs 611 on the cam 61 abut against the slider 31 .

[0068] Please see attached Fig.10 The slide rail 22 is composed of a pair of U-shaped grooves arranged in parallel. One end of the slider 31 that is slidably connected to the slide rail 22 is formed with a slider seat 32. Both ends of the slider seat 32 can be slidably embedded in the pair of U-shaped grooves.

[0069] Preferably, the width of the slider seat 32 is consistent with the spacing between a pair of U-shaped grooves, so that the groove body of a pair of U-shaped grooves provides movement guidance for the slider seat 32 and the slider 31. The slider 31 is located between the pair of U-shaped grooves, which can prevent the slider 31 from deviating sideways when sliding along the length direction of the slide rail 22.

[0070] Please see attached Figure 8 and attached Fig. 9 A turntable 21 is provided at one end of the slide rail 22 connected to the rotating shaft 9 , and a connecting shaft seat 211 is formed in the middle of the turntable 21 . The connecting shaft seat 211 is coaxially fixedly connected to the rotating shaft 9 through a spline 91 .

[0071] The turntable 21 can be used to further improve the connection and rotation synchronization between the slide rail 22 and the rotating shaft 9. The turntable 21 can preferably be a disc-shaped structure.

[0072] Please see attached Figure 7 and attached Fig.13 A first through hole 11 and a second through hole 12 are provided on the guide rail bracket 1, and a first guide rod 41 is connected to the guide rail 42. The first guide rod 41 and the second guide rod 43 are coaxially arranged on both sides of the guide rail 42, and the first guide rod 41 and the second guide rod 43 pass through the first through hole 11 and the second through hole 12 respectively to guide the linear movement of the first guide rod 41 and the second guide rod 43.

[0073] Preferably, the guide rail bracket 1 is a T-shaped structure, so that the guide rail bracket 1 has a first end fixedly connected to the interior of the car, and the guide rail bracket 1 also has a second end and a third end with a first through hole 11 and a second through hole 12, which are used to provide linear motion guides for the first guide rod 41 and the second guide rod 43.

[0074] Preferably, the first guide rod 41 and the second guide rod 43 can be connected to the guide rail 42 by threaded connection, so as to facilitate assembly and disassembly between the guide rail bracket 1 , the guide rail 42 , the first guide rod 41 and the second guide rod 43 .

[0075] Please see attached Figure 1 To Attachment Fig.17 , the usage method and working principle of the utility model are:

[0076] The vehicle-mounted air source supplies air into the box 51 of the air drive assembly, so that the piston 52 drives the second guide rod 43 to move, and the second guide rod 43 drives the guide rail 42 to perform linear synchronous motion.

[0077] When the guide rail 42 moves, the slider 31 is driven to move synchronously. Under the limitation and guidance of the guide rail 42 and the slide rail 22, the slider 31 moves in the guide rail 42 and the slide rail 22 at the same time, so that the slider 31 can move with the guide rail 42 and push the slide rail 22 to rotate around the connecting shaft seat 211, thereby driving the rotating shaft 9 to rotate through the connecting shaft seat 211, thereby realizing the rotation function of the rotating object 101 around the rotating shaft 9.

[0078] The rotating object 101 may be a cup holder, a makeup mirror, a small armrest, a storage box, or other vehicle parts that require mechanical rotation, and the pneumatically driven rotation function of the mechanically rotating parts is realized through the pneumatically driven assembly.

[0079] Please see attached Fig.12 Different components have different requirements for rotation speed. The PWM control technology can be used to control the rotation speed of the motor of the vehicle-mounted air source 53, and different air volume outputs can be achieved within the same time. The two solenoid valves of the switch control valve 54 control the air flow direction through the front air inlet 511 or the rear air inlet 512, and accurately control the movement speed and direction of the piston 52 in the box body 51, thereby cooperating with the dual-track transmission component to realize the rotation of the rotating object 101 and its speed regulation.

[0080] Please see attached Fig.16 and attached Fig.17 According to the requirements of different application scenarios for speed control methods, an external mechanical structure can also be used to adjust the rotation speed. A cam 61 is installed on the side of the guide rail 42. The installation angle of the cam 61 is rotated by the knob 62 so that a speed control guide arc 611 on the outer contour edge of the cam 61 faces the guide rail 42 and the slider 31. A tension spring 8 is tied between the guide rail 42 and the slider 31. After installation, the tension spring 8 is in a stretched state. The elastic force of the tension spring 8 is used to apply a downward pulling force to the slider 31 so that it presses against the speed control guide arc 611.

[0081] The slider 31 is simultaneously acted upon by the guide rail 42, the slide rail 22, the tension spring 8 and the cam 61. When the air drive assembly pushes the guide rail 42 to move via the second guide rod 43, the slider 31 moves along the speed regulating guide arc 611, and the slider 31 always slides against the speed regulating guide arc 611.

[0082] In this embodiment, speed regulating guide arcs 611 are respectively provided at the edges of both ends of the outer contour of the cam 61, wherein the curvature of one of the speed regulating guide arcs 611 (hereinafter referred to as the first guide arc) is relatively gentle. Fig.16As shown in FIG. 1 , the arc of the other speed regulating guide arc 611 (hereinafter referred to as the second guide arc) is relatively large. Fig.17 shown.

[0083] When different speed regulating guide arcs 611 are selected, the linear motion stroke of the guide rail 42 is also different accordingly because the motion trajectory of the slider 31 is an arc trajectory formed along the speed regulating guide arc 611. Under the conditions that the rotation angle of the rotating shaft 9 is determined and the linear motion of the second guide rod 43 is uniform, the movement time of the slider 31 to complete the arc trajectory is different, and the time for the guide rail 42 to complete different linear motion strokes is also different, thereby realizing the rotation speed adjustment of the rotating shaft 9, and then realizing the speed control of the rotating object 101.

[0084] If the first guide arc is slidably abutted against the slider 31, the distance between the slider 31 and the rotation center of the cam 61 is L1, and the distance between the end of the first guide rod 41 and the first through hole 11 is H1. Fig.16 After being driven by air, the slider 31 moves a certain distance along the first guide arc, so that the rotating object 101 rotates from the closed position to the use position. The end of the first guide rod 41 passes through the first through hole 11 by a distance H2. Fig.16 (b) shows that the linear motion distance of the guide rail 42 is H2-H1.

[0085] If the second guide arc is slidably abutted against the slider 31, the distance between the slider 31 and the rotation center of the cam 61 is L2, and the distance between the end of the first guide rod 41 and the first through hole 11 is H1. Fig.17 After being driven by air, the slider 31 moves a certain distance along the first guide arc, so that the rotating object 101 rotates from the closed position to the use position. The end of the first guide rod 41 passes through the first through hole 11 by a distance H3, as shown in the attached figure. Fig.17 (d) The linear motion distance of the guide rail 42 is H3-H1.

[0086] From the attached Fig.16 and attached Fig.17 It can be seen that L1>L2, H2-H1>H3-H1. Under the condition that the second guide rod 43 approximately moves in a uniform linear motion, during the rotation of the rotating object 101 from the closed position to the use position, the movement time required for the second guide rod 43 when the first guide arc is adopted is greater than the movement time required for the second guide rod 43 when the second guide arc is adopted, that is, the rotation and opening speed of the rotating object 101 is slower when the first guide arc is adopted, and the rotation and opening speed of the rotating object 101 is faster when the second guide arc is adopted.

[0087] When the rotating object 101 rotates from the use position to the closed position, its working principle is the same as that of rotating from the closed position to the use position, only the movement direction is different, and it will not be repeated here.

[0088] The utility model is described in detail above with reference to the accompanying drawings and embodiments. A person skilled in the art can make various variations of the utility model according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the utility model, and the scope of protection of the utility model shall be defined by the scope of the attached claims.

Claims

1. A pneumatic adjustment rotating mechanism, comprising a base, and a rotating object rotatably connected to the base via a rotating shaft, characterized in that: The pneumatic adjustment rotating mechanism also includes an air drive assembly and a double-track transmission assembly; the double-track transmission assembly is connected to the rotating shaft, and the air drive assembly is connected to the double-track transmission assembly to drive the double-track transmission assembly to move, and then drive the rotating object to rotate relative to the base through the rotating shaft.

2. The pneumatic adjustment rotating mechanism according to claim 1, characterized in that: The dual-track transmission assembly includes a guide rail configured to be linearly movable and a rotatable slide rail, and a slider that passes through the slide rail and the guide rail at the same time; the rotating shaft is connected to the slide rail, and when the guide rail is driven by the air drive assembly to move linearly, the slide rail is driven to rotate through the slider, and the rotating object is driven to rotate through the rotating shaft.

3. The pneumatic adjustment rotating mechanism according to claim 2, characterized in that: A stop point is formed on the guide rail, and when the rotating object rotates to the use position, the slide rail abuts against the stop point to limit the rotating object.

4. The pneumatic adjustment rotating mechanism according to claim 2, characterized in that: The air drive assembly includes a vehicle-mounted air source, a box body and a piston; the piston is slidably arranged in the box body, the box body includes a front air inlet and a rear air inlet, and the vehicle-mounted air source is respectively connected to the front air inlet and the rear air inlet.

5. The pneumatic adjustment rotating mechanism according to claim 4, characterized in that: The pneumatic regulating rotating mechanism further comprises a second guide rod, one end of which is connected to the piston and the other end of which is connected to the guide rail, so that the pneumatic drive assembly drives the guide rail to move linearly.

6. The pneumatic adjustment rotating mechanism according to claim 5, characterized in that: The dual-track transmission assembly also includes a guide rail bracket, the rotating shaft passes through the guide rail bracket and is fixedly connected to the slide rail, and the guide rail bracket is also provided with a second through hole for the second guide rod to pass through, so as to guide the linear movement of the second guide rod.

7. The pneumatic adjustment rotating mechanism according to claim 4, characterized in that: The pneumatically adjusted rotating mechanism further comprises an electric speed control module, which is connected to the motor of the vehicle-borne air source and is used to control the speed of the motor of the vehicle-borne air source.

8. The pneumatic adjustment rotating mechanism according to claim 2, characterized in that: The pneumatic regulating rotating mechanism also includes a mechanical speed regulating component, which includes a cam and a tension spring; the cam is installed on the side of the guide rail away from the slide rail, and the tension spring is connected between the slider and the guide rail to keep the slider in sliding contact with the outer contour edge of the cam.

9. The pneumatic adjustment rotating mechanism according to claim 8, characterized in that: The outer contour edge of the cam includes a plurality of speed regulating guide arcs that are in sliding contact with the slider, and the distance between each speed regulating guide arc and the rotation center of the cam is different.

10. The pneumatic adjustment rotating mechanism according to claim 8, characterized in that: The mechanical speed regulating assembly also includes a cam bracket for supporting the cam and a knob arranged on the cam, wherein the knob is fixedly connected to the cam to adjust the rotation of the cam relative to the cam bracket.

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