Control method of automatic tightening cup holder, automatic tightening cup holder and vehicle

Abstract

The invention provides a control method for an automatic tightening cup holder, the automatic tightening cup holder and a vehicle. The control method comprises the steps that a belt-shaped body is arranged at an opening in one side of a cup groove of the automatic tightening cup holder, a tightening mechanism is used for driving the belt-shaped body to act, firstly, initial pre-tightening force is applied to the belt-shaped body, and then the belt-shaped body is tightened; the part, located at the opening, of the belt-shaped body is in a first state; whether a cup-shaped container is placed in the cup groove or not is judged based on the length increase condition of the part, located at the opening, of the belt-shaped body relative to the first state or the signal change condition of a detection device arranged at the bottom of the cup groove; and under the condition that the cup-shaped container is judged to be placed in the cup groove, the tightening mechanism is controlled to drive the belt-shaped body to be tightened by the set holding force, so that the belt-shaped body is kept in a second state of constraining the cup-shaped container. According to the control method, the tightening mechanism is controlled to drive the belt-shaped body to be tightened with the set holding force F1, and the reliability of placing the cup-shaped container on the automatic tightening cup holder can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts, and in particular to a control method for automatically tightening a cup holder. In addition, the present invention also relates to a method for automatically tightening a cup holder and a vehicle. Background Art

[0002] At present, in order to increase the storage convenience of car interiors, more and more storage devices are applied to car interiors. In the prior art, cup-shaped containers such as beverage bottles and water cups are mostly placed in the glove box formed on the door interior panel, on the central armrest box, or on the middle armrest of the rear seat, etc. These methods have limitations to a certain extent. For example, if the glove box is too small and the radial dimension of the cup-shaped container is large, the cup-shaped container will not be able to be placed in it; placing a cup-shaped container on the central armrest box is likely to affect the operation of surrounding parts; placing a cup-shaped container on the middle armrest of the rear seat will affect the comfort of passengers, etc.

[0003] In addition, during driving, cup-shaped containers placed in the glove box or on the center armrest box are easily shaken by the vehicle's vibrations and bumps, distracting the driver's attention and affecting driving safety.

[0004] In the prior art, there is also a situation in which elastic parts are used to apply a certain clamping force to the cup-shaped container; however, in this way, the force applied to the cup-shaped container is greatly affected by the radial size of the cup-shaped container itself, and there is elasticity, and the cup-shaped container cannot be completely and firmly fixed. When the vehicle is driving on off-road or bumpy roads, there is a risk that cup-shaped containers such as water bottles and water cups will fall off and fall into the driving area, thereby affecting driving safety; if the vehicle encounters a collision, the cup-shaped container may also fly out, causing secondary injuries to the human body, or affecting the deployment of airbags, affecting personal safety. Summary of the invention

[0005] In view of this, the present invention aims to provide a control method for automatically tightening a cup holder, so as to improve the reliability of automatically tightening the cup holder to place a cup-shaped container.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] A control method for automatically tightening a cup holder, comprising:

[0008] A strip is arranged at the opening of one side of the cup slot of the automatic tightening cup holder, and a tightening mechanism is used to drive the strip to move, and an initial pre-tightening force is first applied to the strip, so that the portion of the strip located at the opening is in a first state;

[0009] Based on the increase in the length of the strip at the opening relative to its length in the first state, or the change in the signal of the detection device provided at the bottom of the cup slot, determine whether a cup-shaped container is placed in the cup slot;

[0010] When it is determined that the cup-shaped container is placed in the cup slot, control the tightening mechanism to drive the strip to tighten with a set holding force, so that the strip is maintained in the second state of binding the cup-shaped container.

[0011] Further, it further includes: obtaining the acceleration condition of the vehicle, judging the driving condition of the vehicle according to the acceleration condition to determine the relative acceleration a between the vehicle and the cup-shaped container, and setting the magnitude of the holding force based on the relative acceleration a.

[0012] Further, the obtaining the acceleration condition of the vehicle includes: obtaining the height signal of the suspension, the rotational speed signal of the wheel, the lateral acceleration signal of the vehicle, and the braking acceleration signal of the braking system, calculating the driving acceleration of the vehicle based on the change in the rotational speed signal, determining the lateral acceleration of the vehicle based on the lateral acceleration signal, and determining the braking acceleration of the vehicle based on the braking acceleration signal;

[0013] When the change rate of the height signal is greater than the set change rate, judge that the driving condition is a severe condition;

[0014] When the driving acceleration, the lateral acceleration, and the braking acceleration are all below the correspondingly set thresholds, and the change rate of the height signal is below the set change rate, judge that the driving condition is a stable condition;

[0015] When at least one of the driving acceleration, the lateral acceleration, and the braking acceleration is greater than the correspondingly set threshold, judge that the driving condition is a motion condition;

[0016] Set the relative acceleration a corresponding to the stable condition, the motion condition, and the severe condition respectively.

[0017] Further, in the stable condition, the relative acceleration a is set to 0.3G to 0.7G; where G is the acceleration due to gravity;

[0018] In the motion condition, the relative acceleration a takes the sum of the components of the driving acceleration, the lateral acceleration, and the braking acceleration in the opening direction of the cup slot (10);

[0019] In the severe condition, the relative acceleration a adopts the following formula: a = k1a max ; where k1 is a set coefficient greater than 1, a maxis the maximum value of the relative acceleration a under the described motion condition.

[0020] Further, it also includes:

[0021] Obtain the weight W of the cup-shaped container, and determine the holding force based on the angle θ1 between the strip (2) in the second state and the strip (2) in the first state, as well as the weight W.

[0022] Further, the angle θ1 is determined according to the distance between the position on the inner wall of the cup groove (10) opposite to the opening and the strip (2) in the first state, and the length of the part of the strip (2) at the opening in the first state and the second state.

[0023] Further, it also includes:

[0024] Calculate the liquid level height H1 in the cup-shaped container, and correct the holding force based on the height H2 of the strip (2) relative to the bottom of the cup groove (10) and the liquid level height H1.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] The control method of the automatic tightening cup holder of the present invention can know whether the user puts the cup-shaped container into the cup groove according to the change of the length of the part of the strip at the opening or the change of the detection signal; after the cup-shaped container is put into the cup groove, by controlling the tightening mechanism to drive the strip to tighten with the set holding force F1, the cup-shaped container can be reliably fixed in the cup groove of the automatic tightening cup holder, reducing the possibility of the cup-shaped container shaking in the cup groove or falling out of the cup groove, which is beneficial to improving the reliability of placing the cup-shaped container in the automatic tightening cup holder.

[0027] In addition, according to the size and weight of the cup-shaped container itself, or according to different driving conditions of the vehicle, different holding forces F1 are used to tighten the cup-shaped container, which can make the force applied by the tightening mechanism more targeted, and is beneficial to further improving the reliability of placing the cup-shaped container in the automatic tightening cup holder.

[0028] Another object of the present invention is to propose an automatic tightening cup holder, including a frame body, a strip and a tightening mechanism provided on the frame body; a cup groove for placing a cup-shaped container is formed on the frame body, and an opening is provided on one side of the cup groove; the strip is provided at the opening and can tighten the cup-shaped container placed in the cup groove under the drive of the tightening mechanism.

[0029] Further, the frame body includes a side frame surrounding the side wall of the cup groove and a bottom support provided at the bottom of the cup groove; a fixing frame and a hook are provided on the side of the side frame facing away from the cup groove, and the fixing frame and the hook are respectively arranged near both sides of the opening; one end of the strip is connected to the hook, and the other end is connected to the tightening mechanism provided on the fixing frame;

[0030] The tightening mechanism includes a reel rotatably provided on the fixing frame and a torque motor for driving the reel to rotate; the strip is wound around the reel.

[0031] Compared with the prior art, the automatic tightening cup holder of the present invention is provided with a cup groove with an opening on the frame body, and the tightening mechanism is used to drive the strip to tighten the cup-shaped container located in the cup groove from the opening, which is not only beneficial for the cup holder to adapt to various cup-shaped containers with different radial dimensions, but also can provide different forces to the strip by means of the tightening mechanism, so as to bind the cup-shaped container with a suitable tightening force, which is beneficial to improving the applicability and reliability of the cup holder.

[0032] In addition, the reel is driven by a torque motor, one end of the strip is connected and wound around the reel, and when the torque motor drives the reel to rotate, the strip can be driven to tighten; moreover, by controlling the output torque of the torque motor, the magnitude of the tightening force of the strip on the cup-shaped container can be controlled.

[0033] The present invention also simultaneously proposes a vehicle, on which the automatic tightening cup holder of the present invention is provided, and the automatic tightening cup holder adopts the above control method. The vehicle of the present invention has the technical advantages possessed by the above automatic tightening cup holder or control method. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The attached drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention, and the front-back, up-down and other orientation words involved only represent relative positional relationships and do not constitute improper limitations to the present invention. In the attached drawings:

[0035] Figure 1 is the overall structural schematic diagram of the automatic tightening cup holder described in Embodiment 1 of the present invention provided on the door trim panel;

[0036] Figure 2 is Figure 1 the structural schematic diagram of the shown overall structure from the perspective of the inner cavity side of the door;

[0037] Figure 3 is Figure 2 the partial enlarged view of the part shown at A in;

[0038] Figure 4 isFigure 3 Schematic diagram of the sectional structure of the part shown in B-B in the middle

[0039] Figure 5 Schematic diagram of the three-dimensional structure of the automatic tightening cup holder according to the first embodiment of the present invention

[0040] Figure 6 Exploded view of the automatic tightening cup holder according to the first embodiment of the present invention

[0041] Figure 7 Schematic diagram of the overall control flow of the control method for the automatic tightening cup holder according to the second embodiment of the present invention

[0042] Figure 8 Schematic diagram of the setting strategy of relative acceleration and holding force based on different driving conditions in the control method according to the second embodiment of the present invention

[0043] Figure 9 Schematic diagram of the system composition of the control system of the automatic tightening cup holder according to the second embodiment of the present invention

[0044] Figure 10 Schematic diagram of the derivation principle of the holding force in the control method according to the second embodiment of the present invention

[0045] Figure 11 Schematic diagram of the comparison relationship between the height of the strip relative to the bottom of the groove and the liquid level height in the control method according to the second embodiment of the present invention

[0046] Explanation of reference numerals

[0047] 1, door trim panel; 10, cup slot

[0048] 2, strip

[0049] 3, frame; 30, side frame; 300, hook; 301, mounting hole; 302, through hole; 31, motor fixing bracket; 32, reel bracket

[0050] 4, tightening mechanism; 40, torque motor; 400, driving gear; 401, clamping bracket; 402, Hall sensor; 41, rotating shaft; 410, torsion spring; 42, reel; 420, driven gear; 43, fixing plate; 44, screw

[0051] 5, bottom bracket; 50, tray; 51, weight sensor

[0052] 6, door controller

[0053] 7, body controller; 701, collision sensor; 702, electric power steering system; 703, suspension height sensor; 704, four-wheel speed sensor; 705, braking system Detailed Implementation Modes

[0054] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0055] In the description of the present invention, it should be stated that if terms indicating orientation or positional relationship such as "upper, lower, left, right, front, rear, inner, outer" appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0056] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", "connecting member" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific situations.

[0057] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0058] Embodiment 1

[0059] This embodiment relates to an automatic tightening cup holder, which is beneficial to improving the applicability and reliability of the cup holder; an exemplary structure thereof is as Figures 1 to 5 shown.

[0060] Generally speaking, the automatic tightening cup holder includes a frame body 3, a strip body 2 provided on the frame body 3, and a tightening mechanism 4. Among them, a cup groove 10 for placing a cup-shaped container is formed on the frame body 3, and an opening is provided on one side of the cup groove 10; the strip body 2 is provided at the opening and can tighten the cup-shaped container placed in the cup groove 10 under the drive of the tightening mechanism 4.

[0061] It should be pointed out that the automatic tightening cup holder of the present invention is suitable for being arranged at various positions in a vehicle. For example, it can be configured at positions such as the main and sub instrument panels, side trim panels, pillar trim panels, and rear door trim panels. In this embodiment, as Figures 1 to 4 shown, the automatic tightening cup holder of this embodiment is arranged on the door trim panel 1. The frame body 3 is located in the inner cavity formed between the outer door panel of the door and the door trim panel 1, and is fixedly installed on the door trim panel 1. Of course, the position on the door trim panel 1 corresponding to the cup groove 10 should be designed with a thin wall following the shape of the cup groove 10. In this embodiment, as Figure 4 shown, the thin wall part on the door trim panel 1 fits on the side frame 30 of the frame body 3.

[0062] Specifically, the frame body 3 of this embodiment includes a side frame 30 surrounding the side walls of the cup groove 10, and a bottom support 5 provided at the bottom of the cup groove 10. The side frame 30 is attached to the thin-walled part on the door trim panel 1. On the side of the side frame 30 facing away from the cup groove 10, a fixing frame and a hook 300 are provided, and the fixing frame and the hook 300 are respectively arranged near both sides of the opening; one end of the strip 2 is connected to the hook 300, and the other end is connected to the tightening mechanism 4 provided on the fixing frame. The semi-surrounding side frame 30, in cooperation with the bottom support 5, can form a cup groove 10 with one side open; by providing a fixing frame and a hook 300 on the back side of the side frame 30 (the side facing away from the cup groove 10), it is convenient for the installation of the tightening mechanism 4 and the arrangement of the strip 2.

[0063] In this embodiment, on both sides of the opening, the side frame 30 is provided with a flanging structure bent outward, and mounting holes 301 are provided in the flanging structure, which is convenient for fixing the entire frame body 3 on an installation base part such as the door trim panel 1; at the same time, through holes 302 for the strip 2 to pass through are provided in the flanging structure; corresponding to the through holes 302, through holes should of course also be provided on the door trim panel 1. When the strip 2 passes through the through holes 302 on the side frame 30, it should also pass through the through holes on the door trim panel 1. One end of the strip 2 is hung on the hook 300, then passes through the through hole 302 on the side away from the fixing frame to the opening side of the side frame 30, then passes through the entire opening to the through hole 302 on the side close to the fixing frame, and is connected to the tightening mechanism 4 through this through hole 302.

[0064] Of course, there are various choices for the structural form of the tightening mechanism 4. In this embodiment, as Figure 5 and combined with Figure 6 shown, the tightening mechanism 4 includes a reel 42 rotatably provided on the fixing frame, and a torque motor 40 for driving the reel 42 to rotate. The strip 2 is wound around the reel 42, and the end of the strip 2 is clamped and fixed on the reel 42 through a fixing plate 43. The fixing plate 43 can be installed on the reel 42 by using two screws 44, and then the strip 2 is wound around the reel 42. Connect one end of the strip 2 and wind it around the reel 42, and use the torque motor 40 to drive the reel 42. When the reel 42 rotates, it can drive the strip 2 to tighten; moreover, by controlling the output torque of the torque motor 40, the tightening force of the strip 2 on the cup-shaped container can be controlled.

[0065] Specifically, the fixing frame of the present embodiment includes a reel frame 32 and a motor fixing frame 31 which are arranged adjacent to each other in the axial direction of the reel 42. The torque motor 40 is mounted on the motor fixing frame 31. The torque motor 40 is fixed to the motor fixing frame 31 by a clamping frame 401, and the clamping frame 401 is fixed by two screws 44. The reel 42 is rotatably arranged on the reel frame 32 through a rotating shaft 41, and the torque motor 40 and the reel 42 are connected through a gear structure transmission. The fixing frame is designed as two parts, the motor fixing frame 31 and the reel frame 32, so that the torque motor 40 and the reel 42 can be installed and fixed respectively; the gear structure transmission is adopted between the torque motor 40 and the reel 42, which can not only obtain a suitable transmission ratio, but also have stable and reliable transmission performance. In this embodiment, a fan-shaped driven gear 420 is provided at one end of the reel 42, and preferably internal teeth are provided on the driven gear 420; a driving gear 400 is provided on the output shaft of the torque motor 40, and the driving gear 400 and the driven gear 420 are meshed to realize power transmission between the torque motor 40 and the reel 42.

[0066] In addition, a torsion spring 410 may be sleeved on the rotating shaft 41, and the two ends of the torsion spring 410 apply force to the reel frame 32 and the reel 42 respectively, so that the reel 42 can give the strip 2 an initial pre-tightening force to tighten the strip 2. The torsion spring 410 is arranged on the rotating shaft 41 of the reel 42, which can provide a stable initial pre-tightening force for the strip 2, and can keep the strip 2 in a taut state even when the torque motor 40 does not provide a driving force or fails.

[0067] At the same time, a weight sensor 51 may be provided on the base 5; specifically, the base 5 of this embodiment includes a support plate 50 for supporting the cup-shaped container, and a weight sensor 51 provided on the support plate 50. The weight sensor 51 is provided in the base 5 to obtain a weight signal of the cup-shaped container placed in the cup groove 10, so as to provide the required parameter conditions for the control of automatically tightening the cup holder.

[0068] In summary, the automatic tightening cup holder of this embodiment is provided with a cup groove 10 with an opening on one side on the holder body 3, and the tightening mechanism 4 is used to drive the belt body 2 to tighten the cup-shaped container located in the cup groove 10 from the opening. This is not only conducive to the cup holder adapting to a variety of cup-shaped containers with different radial sizes, but also can provide different forces to the belt body 2 with the help of the tightening mechanism 4, so as to restrain the cup-shaped container with a suitable tightening force, which is conducive to improving the applicability and reliability of the cup holder.

[0069] Embodiment 2

[0070] This embodiment relates to a control method for an automatically tightening cup holder and a vehicle. This control method is applicable to a cup holder that uses a belt 2 to tighten a cup-shaped container. For the sake of easy understanding, this embodiment takes the automatically tightening cup holder provided in Embodiment 1 as an example to illustrate this control method; an exemplary control flow of this control method is as Figure 7 and Figure 8 shown. The vehicle in this embodiment is equipped with the automatically tightening cup holder provided in Embodiment 1, and this automatically tightening cup holder is controlled by the control method of this embodiment.

[0071] Generally speaking, this control method includes the following main steps:

[0072] S1. A belt is arranged at the opening on one side of the cup slot 10 of the automatically tightening cup holder. The tightening mechanism 4 is used to drive the belt 2 to act. First, an initial pre-tightening force F0 is applied to the belt 2, so that the part of the belt 2 located at the opening is in the first state; generally speaking, due to the action of the initial pre-tightening force F0, the part of the belt 2 located at the opening in the first state is in a straight state.

[0073] S2. Based on the increase in the length of the part of the belt 2 located at the opening relative to the first state, or the signal change of the detection device arranged at the bottom of the cup slot 10, it is judged whether a cup-shaped container is placed in the cup slot 10;

[0074] S3. When it is judged that a cup-shaped container is placed in the cup slot 10, the tightening mechanism 4 is controlled to drive the belt 2 to tighten with a set holding force, so that the belt 2 is kept in the second state of binding the cup-shaped container.

[0075] In order to realize the control of the automatically tightening cup holder, the vehicle of course needs to be configured with a control system for controlling the automatically tightening cup holder; an exemplary composition of this control system is as Figure 9 shown. Specifically, the control system of this embodiment includes a control unit, a signal acquisition unit and an execution unit. Among them, the control unit includes a body controller 7 and a door controller 6; the signal acquisition unit includes a collision sensor 701, an electric power steering system 702, a suspension height sensor 703, four-wheel speed sensors 704, a braking system 705, and a weight sensor 51 and a Hall sensor 402 in the automatically tightening cup holder; the execution unit includes a torque motor 40 and a belt 2 in the automatically tightening cup holder, etc.

[0076] The control method and vehicle of this embodiment can determine whether the user has placed the cup-shaped container into the cup slot 10 according to the change in the length of the part of the strip at the opening or the change in the detection signal. After the cup-shaped container is placed into the cup slot 10, by controlling the tightening mechanism 4 to drive the strip 2 to tighten with a set holding force F1, the cup-shaped container can be reliably fixed in the cup slot 10 of the automatic tightening cup holder, reducing the possibility of the cup-shaped container shaking in the cup slot 10 or falling out of the cup slot 10, which is beneficial to improving the reliability of the automatic tightening cup holder for placing the cup-shaped container.

[0077] In addition, the control method of this embodiment further includes the steps of obtaining the acceleration condition of the vehicle and judging the driving condition of the vehicle according to the acceleration condition. By collecting various signals and parameters related to the driving condition, the relative acceleration a between the vehicle and the cup-shaped container can be determined, and then the magnitude of the holding force F1 can be set based on the relative acceleration a.

[0078] Specifically, obtaining the acceleration condition of the vehicle includes obtaining the height signal of the suspension, the rotational speed signal of the wheel, the lateral acceleration signal of the vehicle, and the braking acceleration signal of the braking system. After that, the driving acceleration of the vehicle can be calculated based on the change in the rotational speed signal, the lateral acceleration of the vehicle can be determined based on the lateral acceleration signal, and the braking acceleration of the vehicle can be determined based on the braking acceleration signal.

[0079] As Figure 8 shown, when the change rate of the height signal is greater than the set change rate, the driving condition is judged as a severe condition; when the driving acceleration, lateral acceleration, and braking acceleration are respectively below the corresponding set thresholds and the change rate of the height signal is below the set change rate, the driving condition is judged as a stable condition; when the driving acceleration, lateral acceleration, or braking acceleration is greater than the corresponding set threshold, the driving condition is judged as a motion condition.

[0080] During the actual driving process of the whole vehicle, the body controller 7 can monitor the signal of the height sensor 703 of the suspension to obtain the above-mentioned height signal and determine whether the road condition is stable; monitoring the signal of the four-wheel speed sensor 704 can obtain the above-mentioned rotational speed signal and calculate the driving acceleration condition of the whole vehicle moving forward; monitoring the steering angle signal of the electric power steering system 702, and then the lateral acceleration of the vehicle can be calculated; monitoring the signal of the braking system 705, and then the braking acceleration of the vehicle can be calculated; thus, it can be comprehensively judged whether the vehicle is in a stable condition, a motion condition, or a severe condition.

[0081] The thresholds of the above-mentioned driving acceleration, lateral acceleration, and braking acceleration can be reasonably set according to the vehicle condition. For example, when the vehicle is accelerating rapidly, turning sharply, or braking emergently (at least one of the driving acceleration, lateral acceleration, and braking acceleration will be greater than 0.5G, at this time, it can be determined as a sports working condition); when the body controller 7 detects that the signal of the suspension height sensor 703 changes violently, it can be judged that the vehicle has entered an off-road road condition, a bumpy road condition, etc., and the change rate of the height signal is greater than the set change rate, which can be determined as a harsh working condition; otherwise, it can be regarded that the vehicle is in a stable working condition.

[0082] Under the stable working condition, the relative acceleration a is set to 0.3G - 0.7G. The holding force F1 output by the corresponding torque motor 40 is generally about 10N - 30N, and the initial pre-tightening force F0 can also be set with reference to this range. Setting the relative acceleration a under the stable working condition between 0.3G and 0.7G has a moderate strength and can well ensure the stability of the cup-shaped container in the cup slot 10; the specific value can be flexibly adjusted within this range. For example, the relative acceleration a can take values such as 0.3G, 0.4G, 0.5G, 0.65G, etc.

[0083] After determining different driving working conditions through the above method, different strategies can be adopted to set the relative acceleration a according to the current vehicle driving working conditions, corresponding to the stable working condition, sports working condition, and harsh working condition respectively.

[0084] For the setting of the strategy, of course, there are multiple solutions. For example, based on empirical data, a fixed value of relative acceleration a can be simply set for different working conditions. Further, regarding the setting of the magnitude of the holding force F1 based on the relative acceleration a mentioned above, of course, there are also many solutions. For example, based on the strategy of simply setting a fixed value of relative acceleration a for different working conditions, correspondingly, a fixed weight value of the cup-shaped container can be set according to experience, and then the holding force F1 adopted under different working conditions can be calculated according to Newton's second law formula.

[0085] Adopting the above strategy, usually the magnitude range of the holding force F1 under the stable working condition is 0N - 30N, the magnitude range under the sports working condition is 30N - 100N, and the magnitude range under the harsh working condition is 100N. For different driving working conditions, within the corresponding magnitude range, the magnitude of the holding force F1 can be reasonably adjusted, which will provide a more suitable force for the tightening of the strip 2.

[0086] Although the above simple strategy is convenient for technical implementation, the effect is poor. In this embodiment, the control method of the present invention adopts the following setting strategy.

[0087] Under the stable working condition, the relative acceleration a is set to 0.3G - 0.7G; where G is the acceleration due to gravity;

[0088] Under the motion condition, the relative acceleration a is the sum of the components of the driving acceleration, the lateral acceleration, and the braking acceleration in the opening direction of the cup groove 10;

[0089] Under the harsh condition, the relative acceleration a adopts the following formula:

[0090] a = k1a max ; where k1 is a set coefficient greater than 1, and a max is the maximum value of the relative acceleration a under the motion condition recorded and statistically analyzed within a certain time period.

[0091] Through the above judgment and classification of the vehicle driving condition types, different relative accelerations a can be set with different strategies corresponding to the stable condition, the motion condition, and the harsh condition, providing good conditions for calculating and obtaining a more suitable holding force F1.

[0092] Based on the above settings, the control method of this embodiment further includes determining the above-mentioned holding force based on the angle θ1 between the strip 2 in the second state and the strip 2 in the first state and the weight W. There are of course various specific calculation and determination methods. In this embodiment, the following calculation method is adopted:

[0093] Obtain the weight W of the cup-shaped container, and calculate the holding force F1 through the following formula:

[0094]

[0095] where θ1 is the angle between the strip 2 in the second state and the strip 2 in the first state.

[0096] Regarding the determination of the above θ1, there are various ways; for example, the inclination angle of the strip 2 in the second state can be measured by setting a detection device, which is the above-mentioned angle θ1.

[0097] As Figure 10 shown, the angle θ1 can be determined according to the distance between the position on the inner wall of the cup groove 10 facing the opening and the strip 2 in the first state, and the lengths of the parts of the strip 2 at the opening in the first state and the second state. Among them, the length of the part of the strip 2 at the opening in the first state is twice L2, and the length of the part of the strip 2 at the opening in the second state is twice (L3 + L4).

[0098] Specifically, in this embodiment, the tightening mechanism 4 uses a torque motor 40 to drive the strip 2 to act, and calculates the angle θ1 through the following formula:

[0099]

[0100] Among them, L1 is the distance between the position on the inner wall of the cup groove 10 opposite to the opening and the strip 2 in the first state, and L2 is half of the length of the part of the strip 2 at the opening in the first state; R is the radius of the cup-shaped container, and this radius R is calculated by the following formula:

[0101]

[0102] In the above formula, π is the pi, r is the radius of the driving wheel on the output end of the torque motor 40, k is the ratio of the linear velocity of the strip 2 to the linear velocity of the driving wheel; θ is the rotation angle of the torque motor 40.

[0103] Regarding the specific derivation process of the above formula, it can be combined with Figure 10 and refer to the following formulas (1) to (5).

[0104]

[0105] Obviously, the values of the equations on both sides of formula (1) are both the change value of the length of the part of the strip 2 at the opening during the process of the strip 2 from the first state to the second state. This changed length is also formed because the torque motor 40 rotates in the positive direction ( Figure 10 the counterclockwise direction shown in) by the rotation angle θ; the actual process is that due to the placement of the cup-shaped container, the changed length of the strip 2 is longer than the strip 2 in the second state. Then the torque motor 40 rotates in the reverse direction to tighten the strip 2, so that the strip 2 reaches the position in the second state.

[0106]

[0107]

[0108] θ1 + θ2 = arctan[L2 / (L1 - R)] (4)

[0109] θ2 = arCtan(L3 / R) (5)

[0110] Still as Figure 10 shown, based on the geometric relationship of each parameter in the above formula in the figure, the above formulas (1) to (5) can be determined; substituting the above formulas (2) to (5) into formula (1), the relationship formula between the radius R of the cup-shaped container and the rotation angle θ of the torque motor 40 can be obtained.

[0111] The holding force F1 calculated by using the above various formulas has extremely high pertinence and adaptability, and can provide a very suitable binding force for the cup-shaped container. No matter how the weight of the cup-shaped container changes or how the driving conditions of the vehicle change, it can tighten the cup-shaped container with the most appropriate holding force F1 to prevent it from falling out of the cup groove 10.

[0112] In addition, as shown in Figure 11, the following formula can also be used to calculate the liquid level height H1 in the cup-shaped container, and the holding force can be corrected based on the height H2 of the strip 2 relative to the bottom of the cup groove 10 and the liquid level height H1.

[0113] Specifically, there can be multiple correction schemes. In this embodiment, the liquid level height H1 is calculated using the following formula:

[0114] where k2 is a density coefficient between 0.8 and 1.2 (set based on the liquid density in the cup-shaped container, usually set to 1).

[0115] Furthermore, compare the height H2 of the strip 2 relative to the bottom of the cup groove 10 with the liquid level height H1; when H1 / 2 > H2, the tightening mechanism 4 can be controlled to drive the strip 2 to tighten with the corrected holding force F2; the corrected holding force F2 can be calculated based on the following formula:

[0116]

[0117] Through the above correction of the holding force, better tightening effects can be achieved for cup-shaped containers with larger height dimensions and excessive water filled in the cups. For example, when the vehicle body controller 7 detects a collision signal of the whole vehicle through the collision sensor 701, it can be regarded that the vehicle is in a collision condition. At this time, the torque motor 40 should drive the strip 2 to tighten the cup-shaped container with a greater holding force; according to experience, the holding force in the collision condition can be set above 100N. For example, the door controller 6 can be used to control the torque motor 40 to rotate reversely by 50° to 480° (this value is only for illustration, and the specific value should be reasonably adjusted according to the dimensions and transmission ratio of the driving gear 400 and the driven gear 420), and lock it to make the strip 2 tighten synchronously by 2mm - 5mm, and the holding force applied to the strip 2 ≥ 100N to prevent the cup-shaped container from slipping out laterally. Based on the initially determined holding force F1 calculated above, the corrected holding force F2 is obtained through further correction, and the cup-shaped container is tightened with this force, which can prevent the cup-shaped container with larger height dimensions and excessive water filled in the cup from flying out of the cup groove 10 under conditions such as the vehicle being in a collision condition.

[0118] In this embodiment, a Hall sensor 402 for detecting the rotation angle θ of the torque motor 40 can be provided in the torque motor 40; it can conveniently obtain the change in the rotation angle of the torque motor 40.

[0119] The control method based on this embodiment and the structure of the automatic tightening cup holder provided in Embodiment 1. In actual use, when a cup-shaped container is placed into the cup slot 10, the strip 2 will be lifted by the cup-shaped container, that is, the strip 2 is pulled by an external force, and the strip 2 will drive the reel 42 to rotate along the Figure 5 direction shown by α in the figure, thereby driving the torque motor 40 to rotate forward, and the length of the part of the strip 2 at the opening relative to that in the first state increases; it can be judged that a cup-shaped container is placed into the cup slot 10 according to the change of the rotation angle θ. When the cup-shaped container is placed into the cup slot 10, the signal of the detection device (weight sensor 51) at the bottom of the cup slot 10 will also change, which further corroborates the situation that the cup-shaped container is placed into the cup slot 10. After the signal of the weight sensor 51 also changes, the torque motor 40 can be controlled to rotate reversely, and by controlling the rotation speed and output torque of the torque motor 40, the strip 2 can be driven to tighten with a set initial holding force F1 or a corrected holding force F2 to tighten the cup-shaped container placed in the cup slot 10.

[0120] According to the size and weight of the cup-shaped container itself, or according to different driving conditions of the vehicle, different holding forces are used to tighten the cup-shaped container, which can make the applied force of the tightening mechanism 4 more targeted and is beneficial to further improving the reliability of the automatic tightening cup holder for placing the cup-shaped container.

[0121] In summary, for the vehicle of this embodiment, the above control method is used to control the automatic tightening cup holder. After a cup-shaped container is placed in the cup slot 10, the recovery speed of the strip 2 can be adjusted by controlling the torque motor 40, preventing the strip 2 from quickly rebounding only by the spring, avoiding risks such as the strip 2 rebounding and hitting the bottle body, wearing the through hole 302, and being inconvenient to pull out the finger and being squeezed after the cup-shaped container is placed; improving the operation comfort and safety of the automatic tightening cup holder.

[0122] Moreover, by controlling the output torque of the torque motor 40, according to the size and weight of the cup-shaped container itself, as well as different driving conditions of the vehicle, different holding forces are used to tighten the cup-shaped container, avoiding the cup-shaped container from falling, thereby affecting the operation of the driver and improving the safety of the occupants. When the vehicle collides, the cup-shaped container can also be tightened and locked by controlling the torque motor 40 to further fix the cup-shaped container, avoiding the cup-shaped container flying out due to the collision and thus affecting the human body or the airbag, and improving the safety of the occupants.

[0123] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A control method for an automatically tightening cup holder, characterized in that, Comprising: A strip is provided at an opening on one side of the cup slot (10) of the automatically tightening cup holder. The tightening mechanism (4) drives the strip (2) to act. First, an initial pre-tightening force is applied to the strip (2) so that the portion of the strip (2) at the opening is in a first state; Based on the increase in the length of the portion of the strip (2) at the opening relative to the first state, or the change in the signal of the detection device provided at the bottom of the cup slot (10), it is determined whether a cup-shaped container is placed in the cup slot (10); In the case where it is determined that the cup-shaped container is placed in the cup slot (10), the tightening mechanism (4) is controlled to drive the strip (2) to tighten with a set holding force so that the strip (2) is maintained in a second state of binding the cup-shaped container.

2. The control method of the automatic tightening cup holder according to claim 1, characterized in that, Further comprising: Obtain the acceleration condition of the vehicle, judge the driving condition of the vehicle according to the acceleration condition to determine the relative acceleration a between the vehicle and the cup-shaped container, and set the magnitude of the holding force based on the relative acceleration a.

3. The control method of the automatically tightening cup holder according to claim 2, wherein: The obtaining of the acceleration condition of the vehicle includes: Obtain the height signal of the suspension, the rotational speed signal of the wheel, the lateral acceleration signal of the vehicle, and the braking acceleration signal of the braking system, calculate the driving acceleration of the vehicle based on the change of the rotational speed signal, determine the lateral acceleration of the vehicle based on the lateral acceleration signal, and determine the braking acceleration of the vehicle based on the braking acceleration signal; When the change rate of the height signal is greater than the set change rate, it is determined that the driving condition is a severe condition; When the driving acceleration, the lateral acceleration, and the braking acceleration are all below the corresponding set thresholds, and the change rate of the height signal is below the set change rate, it is determined that the driving condition is a stable condition; When at least one of the driving acceleration, the lateral acceleration, and the braking acceleration is greater than the corresponding set threshold, it is determined that the driving condition is a motion condition; The relative acceleration a is set corresponding to the stable condition, the motion condition, and the severe condition respectively.

4. The control method of the automatically tightening cup holder according to claim 3, wherein: In the stable condition, the relative acceleration a is set to 0.3G to 0.7G; where G is the gravitational acceleration; In the motion condition, the relative acceleration a takes the sum of the components of the driving acceleration, the lateral acceleration, and the braking acceleration in the opening direction of the cup slot (10); Under the severe working conditions, the relative acceleration a adopts the following formula: a = k1a max ; where k1 is a set coefficient greater than 1, and a max is the maximum value of the relative acceleration a under the motion working conditions.

5. The control method of the automatically tightened cup holder according to any one of claims 2 to 4, characterized in that, Further comprising: Obtain the weight W of the cup-shaped container, and determine the holding force based on the angle θ1 between the strip (2) in the second state and the strip (2) in the first state and the weight W.

6. The control method of the automatically tightening cup holder according to claim 5, wherein: The included angle θ1 is determined based on the distance between the position on the inner wall of the cup groove (10) opposite to the opening and the strip (2) in the first state, and the length of the part of the strip (2) at the opening in the first state and the second state.

7. The control method of the automatically tightened cup holder according to claim 6, characterized in that, It further includes: Calculating the liquid level height H1 in the cup-shaped container, and correcting the holding force based on the height H2 of the strip (2) relative to the bottom of the cup groove (10) and the liquid level height H1.

8. An automatic tightening cup holder, characterized in that: It includes a frame body (3), a strip (2) and a tightening mechanism (4) provided on the frame body (3); A cup groove (10) for placing a cup-shaped container is formed on the frame body (3), and an opening is provided on one side of the cup groove (10); The strip (2) is provided at the opening and can tighten the cup-shaped container placed in the cup groove (10) under the drive of the tightening mechanism (4).

9. The automatic tightening cup holder according to claim 8, characterized in that: The frame body (3) includes a side frame (30) surrounding the side wall of the cup groove (10), and a bottom support (5) provided at the bottom of the cup groove (10); A fixed frame and a hook (300) are provided on the side of the side frame (30) facing away from the cup groove (10), and the fixed frame and the hook (300) are respectively arranged near both sides of the opening; One end of the strip (2) is connected to the hook (300), and the other end is connected to the tightening mechanism (4) provided on the fixed frame; The tightening mechanism (4) includes a reel (42) rotatably provided on the fixed frame, and a torque motor (40) for driving the reel (42) to rotate; the strip (2) is wound around the reel (42).

10. A vehicle, characterized in that: The vehicle is provided with the automatic tightening cup holder according to claim 8 or 9, and the automatic tightening cup holder adopts the control method of the automatic tightening cup holder according to any one of claims 1 to 7.

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