Control method for automatically tightening a cup holder, automatically tightening cup holder, and vehicle

Abstract

The application provides a control method of an automatic cup holder, the automatic cup holder and a vehicle. The control method comprises the following steps: a belt-shaped body is arranged at an opening of one side of a cup groove of the automatic cup holder, the belt-shaped body is driven to move by a tightening mechanism, an initial pre-tightening force is first applied to the belt-shaped body, and the part of the belt-shaped body located at the opening is in a first state; whether a cup-shaped container is placed in the cup groove is determined based on the length increase of the part of the belt-shaped body located at the opening relative to the first state or the signal change of a detection device arranged at the bottom of the cup groove; and in the case that the cup groove is determined to have the cup-shaped container, the tightening mechanism is controlled to drive the belt-shaped body to tighten at a set holding force, so that the belt-shaped body is kept in a second state of restraining the cup-shaped container. According to the control method, the belt-shaped body is driven to tighten at the set holding force F1 by the tightening mechanism, and the reliability of the automatic cup holder for placing the cup-shaped container is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to a control method for automatically tightening cup holders. Furthermore, this invention also relates to a device for automatically tightening cup holders and a vehicle. Background Technology

[0002] Currently, to enhance the convenience of storage in car interiors, an increasing number of storage devices are being applied. In existing technologies, beverage bottles, water cups, and other cup-shaped containers are often placed in molded storage boxes on door panels, on the center console, or on the rear seat center armrest. However, these methods have limitations to some extent. For example, if the storage box is too small and the cup-shaped container's radial dimensions are too large, it cannot be placed; placing a cup-shaped container on the center console can interfere with the operation of surrounding items; and placing a cup-shaped container on the rear seat center armrest affects passenger comfort, etc.

[0003] In addition, cup-shaped containers placed in the glove compartment or center console during driving are easily shaken by the vehicle's vibrations and bumps, which can distract the driver and affect driving safety.

[0004] Existing technologies also employ elastic elements to apply a clamping force to cup-shaped containers; however, the force applied to the cup-shaped container is greatly affected by its own radial dimension, exhibiting elasticity and failing to completely and firmly secure it. When vehicles are traveling on off-road or bumpy roads, there is a risk that water bottles, cups, and other cup-shaped containers may detach and fall into the driving area, thus affecting driving safety. In the event of a vehicle collision, the cup-shaped container may also fly out, potentially causing secondary injuries to the human body or affecting airbag deployment, thus compromising personal safety. Summary of the Invention

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

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

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

[0008] A strip is provided at the opening on one side of the cup slot of the automatic tightening cup holder. The tightening mechanism drives the strip to move. First, an initial pre-tightening force is applied to the strip so that the part of the strip located at the opening is in a first state.

[0009] Based on the increase in length of the portion of the strip located at the opening relative to the first state, or the signal change of the detection device located at the bottom of the cup slot, it is determined whether a cup-shaped container has been placed in the cup slot.

[0010] If it is determined that the cup-shaped container is placed in the cup slot, the tightening mechanism is controlled to tighten the band with a set holding force so that the band is kept in the second state of binding the cup-shaped container.

[0011] Furthermore, it also includes: acquiring the vehicle's acceleration, determining the vehicle's driving condition based on the acceleration, determining 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] Furthermore, the acquisition of vehicle acceleration includes: acquiring suspension height signal, wheel rotation speed signal, vehicle lateral acceleration signal, and braking acceleration signal of braking system, and calculating vehicle driving acceleration based on the change of the rotation speed signal, determining vehicle lateral acceleration based on the lateral acceleration signal, and determining vehicle braking acceleration based on the braking acceleration signal.

[0013] When the rate of change of the altitude signal is greater than the set rate of change, the driving condition is determined to be a severe condition.

[0014] When the driving acceleration, the lateral acceleration, and the braking acceleration are all below the corresponding set thresholds, and the rate of change of the altitude signal is below the set rate of change, the driving condition is determined to be a stable condition.

[0015] When at least one of the driving acceleration, the lateral acceleration, and the braking acceleration is greater than a corresponding set threshold, the driving condition is determined to be a motion condition.

[0016] The relative acceleration 'a' is set for the stable working condition, the dynamic working condition, and the severe working condition, respectively.

[0017] Furthermore, under the stable operating conditions, the relative acceleration 'a' is set to 0.3G to 0.7G; where G is the acceleration due to gravity.

[0018] Under the aforementioned motion conditions, 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 slot (10);

[0019] Under the aforementioned severe operating conditions, the relative acceleration 'a' is expressed by the following formula: a = k1a max Where k1 is a set coefficient greater than 1, and a maxThe value of the relative acceleration 'a' under the stated motion condition.

[0020] Furthermore, it also includes:

[0021] The weight W of the cup-shaped container is obtained, and the holding force is determined 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.

[0022] Furthermore, the included angle θ1 is determined based on the distance between the position on the inner wall of the cup groove (10) directly opposite the opening and the strip (2) in the first state, as well as the length of the portion of the strip (2) located at the opening in the first and second states.

[0023] Furthermore, 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 (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 determine whether the user has placed a cup-shaped container into the cup slot based on the change in the length of the portion of the strip at the opening or the change in the detection signal. After the cup-shaped container is placed into the cup slot, the tightening mechanism is controlled to tighten the strip with a set holding force F1, which can reliably fix the cup-shaped container in the cup slot of the automatic tightening cup holder, reducing the possibility of the cup-shaped container shaking in the cup slot or falling out of the cup slot, and improving the reliability of the automatic tightening cup holder in placing cup-shaped containers.

[0027] Furthermore, by using different holding forces F1 to tighten the cup-shaped container according to its size and weight, or according to the different driving conditions of the vehicle, the force applied by the tightening mechanism can be more targeted, which is conducive to further improving the reliability of the automatic tightening cup holder for placing cup-shaped containers.

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

[0029] Furthermore, the frame includes a side frame that encloses the side wall of the cup groove, and a bottom support located 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 located near the two 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 rotatable reel mounted on the fixed frame and a torque motor for driving the reel to rotate; the strip is wound around the reel.

[0031] Compared to existing technologies, the automatic tightening cup holder of the present invention has a cup groove with an opening on one side on the frame. The tightening mechanism drives the strip to tighten the cup-shaped container located in the cup groove from the opening. This not only helps the cup holder to adapt to various cup-shaped containers with different radial dimensions, but also allows the tightening mechanism to provide different forces to the strip, thereby binding 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, a torque motor drives a reel, and one end of the strip is connected to and wound onto the reel. When the torque motor drives the reel to rotate, the strip can be tightened. Moreover, the tension of the strip on the cup-shaped container can be controlled by controlling the output torque of the torque motor.

[0033] This invention also proposes a vehicle equipped with the automatic cup holder described in this invention, wherein the automatic cup holder employs the aforementioned control method. The vehicle of this invention possesses the technical advantages of the aforementioned automatic cup holder or control method. Attached Figure Description

[0034] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are for explaining the invention. The directional terms used, such as front / back, up / down, etc., are only used to indicate relative positional relationships and do not constitute an improper limitation of the invention. In the drawings:

[0035] Figure 1 This is a schematic diagram of the overall structure of the automatic cup holder installed on the interior door panel according to Embodiment 1 of the present invention;

[0036] Figure 2 for Figure 1 The diagram shows the overall structure from the perspective of the inner cavity of the door.

[0037] Figure 3 for Figure 2 A magnified view of the area shown in section A;

[0038] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure of the part shown in BB;

[0039] Figure 5 This is a three-dimensional structural diagram of the automatic tightening cup holder described in Embodiment 1 of the present invention;

[0040] Figure 6 This is an exploded view of the automatic tightening cup holder described in Embodiment 1 of the present invention;

[0041] Figure 7 This is a schematic diagram of the overall control flow of the control method for automatically tightening cup holders as described in Embodiment 2 of the present invention;

[0042] Figure 8 This is a schematic diagram of the setting strategy for relative acceleration and holding force based on different driving conditions in the control method described in Embodiment 2 of the present invention;

[0043] Figure 9 This is a schematic diagram of the system configuration of the automatic cup holder tightening control system described in Embodiment 2 of the present invention;

[0044] Figure 10 This is a schematic diagram illustrating the derivation principle of the holding force in the control method described in Embodiment 2 of the present invention;

[0045] Figure 11 This is a schematic diagram showing the comparison between the height of the strip relative to the bottom of the tank and the liquid level in the control method described in Embodiment 2 of the present invention.

[0046] Explanation of reference numerals in the attached figures:

[0047] 1. Door interior trim panel; 10. Cup holder;

[0048] 2. Ribbon-like body;

[0049] 3. Frame; 30. Side frame; 300. Hook; 301. Mounting hole; 302. Through hole; 31. Motor mounting bracket; 32. Reel bracket;

[0050] 4. Tensioning mechanism; 40. Torque motor; 400. Drive gear; 401. Clamping frame; 402. Hall sensor; 41. Rotary shaft; 410. Torsion spring; 42. Reel; 420. Driven gear; 43. Fixing plate; 44. Screw;

[0051] 5. Base support; 50. Pallet; 51. Weight sensor;

[0052] 6. Door controller;

[0053] 7. Body control unit; 701. Collision sensor; 702. Electric power steering system; 703. Suspension height sensor; 704. Four-wheel speed sensor; 705. Braking system. Detailed Implementation

[0054] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

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

[0056] Furthermore, in the description of this invention, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, a 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 a direct connection or an indirect connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention in light of the specific circumstances.

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

[0058] Example 1

[0059] This embodiment relates to an automatically tightening cup holder, which improves the applicability and reliability of the cup holder; one exemplary structure is as follows: Figures 1 to 5 As shown.

[0060] Overall, the automatic tightening cup holder includes a frame 3, a strip 2 disposed on the frame 3, and a tightening mechanism 4. The frame 3 has a cup groove 10 formed on it for placing cup-shaped containers, and one side of the cup groove 10 has an opening; the strip 2 is disposed at the opening and can tighten the cup-shaped containers placed in the cup groove 10 under the action of the tightening mechanism 4.

[0061] It should be noted that the automatic retractable cup holder of the present invention is suitable for installation in various locations within a vehicle, such as the main and passenger dashboards, side panels, pillar panels, and tailgate panels. In this embodiment, as... Figures 1 to 4 As shown, in this embodiment, the automatic tightening cup holder is mounted on the door trim panel 1. The holder 3 is located in the cavity formed between the outer door panel and the door trim panel 1, and is fixed to the door trim panel 1. Of course, the position on the door trim panel 1 corresponding to the cup holder 10 should be designed with a thin wall conforming to the shape of the cup holder 10. In this embodiment, for example... Figure 4 As shown, the thin-walled portion of the interior door panel 1 is attached to the side frame 30 of the frame 3.

[0062] Specifically, the frame 3 in this embodiment includes a side frame 30 that encloses the side wall of the cup holder 10, and a base support 5 located at the bottom of the cup holder 10. The side frame 30 is attached to the thin-walled portion of the door trim panel 1. A fixing bracket and a hook 300 are provided on the side of the side frame 30 facing away from the cup holder 10, respectively, close to 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 bracket. By using a semi-enclosed side frame 30 and the base support 5, a cup holder 10 with an opening on one side can be formed. The fixing bracket and hook 300 are provided on the back side of the side frame 30 (the side facing away from the cup holder 10) to facilitate the installation of the tightening mechanism 4 and the arrangement of the strip 2.

[0063] In this embodiment, the side frame 30 has outwardly bent flange structures on both sides of the opening. The flange structures have mounting holes 301 to facilitate the overall fixing of the frame 3 to the door interior panel 1 or other mounting base components. Simultaneously, the flange structures have through holes 302 for the strip 2 to pass through. Corresponding to the through holes 302, the door interior panel 1 should also have through holes. The strip 2 passes through both the through holes 302 on the side frame 30 and the through holes on the door interior panel 1. One end of the strip 2 is hooked onto a hook 300, then passes through the through hole 302 away from the fixing frame to the opening side of the side frame 30, then through the entire opening to the through hole 302 near the fixing frame, and finally connects to the tightening mechanism 4 through this through hole 302.

[0064] There are, of course, multiple options for the structural form of the tightening mechanism 4. In this embodiment, such as... Figure 5 and combined Figure 6 As shown, the tightening mechanism 4 includes a rotatable roller 42 mounted on a fixed frame and a torque motor 40 for driving the roller 42 to rotate. A strip 2 is wound around the roller 42, and the end of the strip 2 is clamped and fixed to the roller 42 by a fixing plate 43. The fixing plate 43 can be installed on the roller 42 using two screws 44. Afterward, the strip 2 is wound around the roller 42. By connecting one end of the strip 2 to and winding it around the roller 42, the torque motor 40 drives the roller 42. When the roller 42 rotates, it can tighten the strip 2. Furthermore, the tightening force of the strip 2 on the cup-shaped container can be controlled by controlling the output torque of the torque motor 40.

[0065] Specifically, the mounting bracket in this embodiment includes a reel bracket 32 ​​and a motor mounting bracket 31 arranged adjacent to each other along the axial direction of the reel 42. The torque motor 40 is mounted on the motor mounting bracket 31 and fixed to the motor mounting bracket 31 by a clamping bracket 401, which is secured with two screws 44. The reel 42 is rotatably mounted on the reel bracket 32 ​​via a rotating shaft 41, and the torque motor 40 and the reel 42 are connected by a gear transmission structure. Designing the mounting bracket into two parts, the motor mounting bracket 31 and the reel bracket 32, facilitates the separate installation and fixing of the torque motor 40 and the reel 42. The gear transmission structure between the torque motor 40 and the reel 42 not only achieves a suitable transmission ratio but also ensures stable and reliable transmission performance. In this embodiment, a sector-shaped driven gear 420 is provided at one end of the reel 42, preferably with internal teeth 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 mesh to realize the power transmission between the torque motor 40 and the reel 42.

[0066] In addition, a torsion spring 410 can be fitted onto the rotating shaft 41. 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 provide the strip 2 with an initial preload to keep the strip 2 taut. By setting the torsion spring 410 on the rotating shaft 41 of the reel 42, a stable initial preload can be provided to the strip 2, so that the strip 2 can be kept taut even if the torque motor 40 does not provide driving force or fails.

[0067] Meanwhile, a weight sensor 51 can also be installed on the base 5; specifically, the base 5 in this embodiment includes a tray 50 for supporting the cup-shaped container, and a weight sensor 51 installed on the tray 50. By installing the weight sensor 51 in the base 5, the weight signal of the cup-shaped container placed in the cup slot 10 can be obtained, so as to provide the necessary parameter conditions for the control of automatically tightening the cup holder.

[0068] In summary, the automatic tightening cup holder of this embodiment has a cup groove 10 with an opening on one side on the frame 3. The tightening mechanism 4 drives the strip 2 to tighten the cup-shaped container located in the cup groove 10 from the opening. This not only helps the cup holder to adapt to various cup-shaped containers with different radial dimensions, but also allows the tightening mechanism 4 to provide different forces to the strip 2, thereby binding the cup-shaped container with a suitable tightening force, which is beneficial to improving the applicability and reliability of the cup holder.

[0069] Example 2

[0070] This embodiment relates to a control method for automatically tightening a cup holder and a vehicle. The control method is applicable to cup holders that use a strip 2 to tighten cup-shaped containers. For ease of understanding, this embodiment uses the automatically tightening cup holder provided in Embodiment 1 as an example to illustrate the control method; an exemplary control flow of this method is as follows: Figure 7 and Figure 8 As shown. The vehicle in this embodiment is equipped with the automatic cup holder provided in Embodiment 1, and the automatic cup holder is controlled by the control method of this embodiment.

[0071] Overall, the control method includes the following main steps:

[0072] S1. A strip is set at the opening on one side of the cup slot 10 of the automatic tightening cup holder. The tightening mechanism 4 drives the strip 2 to move. First, an initial pre-tightening force F0 is applied to the strip 2 so that the part of the strip 2 at the opening is in the first state. Generally speaking, due to the effect of the initial pre-tightening force F0, the part of the strip 2 at the opening is in a straight state in the first state.

[0073] S2. Based on the increase in length of the portion of the strip 2 located at the opening relative to the first state, or the signal change of the detection device located at the bottom of the cup trough 10, determine whether a cup-shaped container has been placed in the cup trough 10.

[0074] S3. When it is determined that a cup-shaped container is placed in the cup slot 10, the tightening mechanism 4 is controlled to tighten the belt 2 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 control the automatic cup holder, the vehicle naturally needs to be equipped with a control system for controlling the automatic cup holder; an exemplary configuration of such a control system is as follows: Figure 9 As shown. Specifically, the control system of this embodiment includes a control unit, a signal acquisition unit, and an execution unit. 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 automatic cup holder; the execution unit includes a torque motor 40 and a belt 2 in the automatic cup holder.

[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 based on the change in the length of the portion of the strip located at the opening or the change in the detection signal. After the cup-shaped container is placed into the cup slot 10, the tightening mechanism 4 is controlled to tighten the strip 2 with a set holding force F1, which can reliably fix the cup-shaped container 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, and improving the reliability of the automatic tightening cup holder in placing the cup-shaped container.

[0077] In addition, the control method of this embodiment also includes the steps of acquiring the vehicle's acceleration and determining the vehicle's driving condition based on the acceleration. 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, acquiring vehicle acceleration information includes acquiring suspension height signals, wheel speed signals, vehicle lateral acceleration signals, and braking acceleration signals from the braking system. Then, the vehicle's driving acceleration can be calculated based on changes in the speed signals, the vehicle's lateral acceleration can be determined based on the lateral acceleration signals, and the vehicle's braking acceleration can be determined based on the braking acceleration signals.

[0079] like Figure 8 As shown, when the rate of change of the altitude signal is greater than the set rate of change, the driving condition is judged as a severe condition; when the driving acceleration, lateral acceleration, and braking acceleration are all below the corresponding set thresholds, and the rate of change of the altitude signal is below the set rate of change, 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 dynamic condition.

[0080] During actual vehicle operation, the body controller 7 can monitor the signal of the suspension height sensor 703 to obtain the aforementioned height signal and determine whether the road conditions are stable; by monitoring the signal of the four-wheel wheel speed sensor 704, the aforementioned speed signal can be obtained to calculate the vehicle's forward acceleration; by monitoring the steering angle signal of the electric power steering system 702, the lateral acceleration of the vehicle can be calculated; and by monitoring the signal of the braking system 705, the braking acceleration of the vehicle can be calculated. Thus, a comprehensive judgment can be made as to whether the vehicle is in a stable operating condition, a dynamic operating condition, or a harsh operating condition.

[0081] The thresholds for driving acceleration, lateral acceleration, and braking acceleration mentioned above can be set reasonably according to the vehicle conditions. For example, when the vehicle accelerates rapidly, makes a sharp turn, or brakes suddenly (at least one of the driving acceleration, lateral acceleration, and braking acceleration will be greater than 0.5G), it can be determined as a dynamic condition. When the body controller 7 detects a drastic change in the signal of the suspension height sensor 703, it can be determined that the vehicle has entered off-road conditions, bumpy road conditions, etc., and the rate of change of the height signal is greater than the set rate of change, which can be determined as a severe condition. Otherwise, it can be considered that the vehicle is in a stable condition.

[0082] Under stable operating conditions, the relative acceleration 'a' is set to 0.3G to 0.7G. The corresponding holding force F1 output by the torque motor 40 is generally around 10N to 30N. The initial preload F0 can also be set within this range. Setting the relative acceleration 'a' under stable operating conditions between 0.3G and 0.7G provides moderate force and effectively ensures the stability of the cup-shaped container within the cup holder 10. Specific values ​​can be flexibly adjusted within this range; for example, the relative acceleration 'a' can be 0.3G, 0.4G, 0.5G, 0.65G, etc.

[0083] After determining the different driving conditions using the above method, different strategies can be adopted to set the relative acceleration 'a' according to the different driving conditions of the current vehicle, corresponding to stable conditions, dynamic conditions, and adverse conditions.

[0084] There are, of course, multiple approaches to setting the strategy; for example, one can simply set a fixed relative acceleration 'a' for different working conditions based on empirical data. Furthermore, regarding the aforementioned approach of setting the holding force F1 based on relative acceleration 'a', there are also numerous options; for instance, based on the strategy of simply setting a fixed relative acceleration 'a' for different working conditions, a fixed weight of the cup-shaped container can be set empirically, and then the holding force F1 used under different working conditions can be calculated using Newton's second law.

[0085] Using the above strategy, the holding force F1 typically ranges from 0N to 30N under stable operating conditions, from 30N to 100N under dynamic operating conditions, and from 100N under adverse operating conditions. Within the corresponding force range, the magnitude of the holding force F1 can be reasonably adjusted for different driving conditions, providing a suitable tension for the belt 2.

[0086] While the aforementioned simple strategy is easy to implement technically, its effectiveness is poor. In this embodiment, the control method of the present invention adopts the following setting strategy.

[0087] Under steady operating conditions, the relative acceleration 'a' is set to 0.3G to 0.7G; where G is the acceleration due to gravity.

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

[0089] Under harsh working conditions, the relative acceleration 'a' is calculated using the following formula:

[0090] a=k1a max Where k1 is a set coefficient greater than 1, and a max This refers to the maximum value of the relative acceleration 'a' under the statistically recorded motion conditions within a certain time period.

[0091] By classifying the vehicle's operating conditions as described above, different relative accelerations 'a' can be set according to different strategies for stable operating conditions, dynamic operating conditions, and severe operating conditions, providing favorable conditions for calculating a more suitable holding force F1.

[0092] Based on the above settings, the control method of this embodiment further includes determining 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. There are, of course, various specific calculation methods; in this embodiment, the following calculation method is used:

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

[0094]

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

[0096] There are several ways to determine θ1; for example, the tilt angle of the strip 2 in the second state can be measured by setting up a detection device, which is the included angle θ1 mentioned above.

[0097] like Figure 10 As shown, the included angle θ1 can be determined based on the distance between the position on the inner wall of the cup groove 10 directly opposite the opening and the strip 2 in the first state, as well as the length of the portion of the strip 2 located at the opening in the first and second states. Specifically, the length of the portion of the strip 2 located at the opening in the first state is twice L2, and the length of the portion of the strip 2 located 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 belt 2, and the included angle θ1 is calculated using the following formula:

[0099]

[0100] Where L1 is the distance between the position on the inner wall of the cup trough 10 directly opposite the opening and the strip 2 in the first state; L2 is half the length of the portion of the strip 2 in the first state located at the opening; R is the radius of the cup-shaped container, which is calculated by the following formula:

[0101]

[0102] In the above formula, π is the ratio of pi to r, the radius of the transmission wheel at the output end of the torque motor 40, k is the ratio of the linear velocity of the belt 2 to the linear velocity of the transmission wheel, and θ is the rotation angle of the torque motor 40.

[0103] For the detailed derivation of the above formula, please refer to... Figure 10 See also the following formulas (1) to (5).

[0104]

[0105] Obviously, the values ​​of the equations on both sides of formula (1) are the changes in length of the portion of the strip 2 at the opening during the process from the first state to the second state. This change in length is also due to the positive ( Figure 10 The strip 2 is formed by rotating by an angle θ in the counterclockwise direction shown in the diagram. The actual process is that the length of the strip 2 changes to be longer than that of the strip 2 in the second state due to the insertion of the cup-shaped container. Then the torque motor 40 rotates in the opposite direction to tighten the strip 2, so that the strip 2 reaches the position of the second state.

[0106]

[0107]

[0108] θ1+θ2=arctan[L2 / (L1-R)] (4)

[0109] θ2=arCtan(L3 / R) (5)

[0110] Still Figure 10 As shown, based on the geometric relationship of the parameters in the above formula in the figure, the above formulas (1) to (5) can be determined; by 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 using the above formulas is highly targeted and adaptable, providing a very suitable binding force to the cup-shaped container. Regardless of changes in the weight of the cup-shaped container or changes in the vehicle's driving conditions, the cup-shaped container can be tightened with the most suitable holding force F1 to prevent it from falling out of the cup groove 10.

[0112] Alternatively, as shown in Figure 11, the liquid level height H1 in the cup-shaped container can be calculated using the following formula, and the holding force can be corrected based on the height H2 of the strip 2 relative to the bottom of the cup trough 10 and the liquid level height H1.

[0113] Specifically, there are several possible correction schemes. In this embodiment, the liquid level height H1 is calculated using the following formula:

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

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

[0116]

[0117] By modifying the holding force as described above, a better tightening effect is achieved for cup-shaped containers with larger dimensions or excessive water content. For example, when the vehicle body controller 7 detects a collision signal through the collision sensor 701, the vehicle can be considered to be in a collision condition. At this time, the torque motor 40 should use a greater holding force to tighten the cup-shaped container with the belt 2. Based on experience, the holding force under collision conditions can be set to 100N or more. For example, the door controller 6 can control the torque motor 40 to rotate in the opposite direction by 50° to 480° (this value is only for illustrative purposes; the specific value should be reasonably adjusted according to the size and transmission ratio of the drive gear 400 and the driven gear 420) and lock it, so that the belt 2 tightens synchronously by 2mm-5mm. The holding force applied to the belt 2 is ≥100N, preventing the cup-shaped container from laterally detaching. Based on the initial holding force F1 determined by the above calculation, a modified holding force F2 is obtained by further modification. With this force, the cup-shaped container is tightened, which can prevent the cup-shaped container with a large height and too much water from flying out of the cup slot 10 under dangerous conditions such as vehicle collision.

[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; the change in the rotation angle of the torque motor 40 can be easily obtained.

[0119] Based on the control method of 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 supported by the cup-shaped container, that is, the strip 2 is pulled by an external force, and the strip 2 will drive the scroll 42 along... Figure 5 The belt 2 rotates in the direction indicated by α, thereby driving the torque motor 40 to rotate in the forward direction. The length of the portion of the belt 2 located at the opening increases relative to the first state. The change in the rotation angle θ indicates that a cup-shaped container has been placed in the cup slot 10. When the cup-shaped container is placed in the cup slot 10, the signal of the detection device (weight sensor 51) at the bottom of the cup slot 10 also changes, further confirming that the cup-shaped container has been placed in the cup slot 10. After the signal of the weight sensor 51 also changes, the torque motor 40 can be controlled to rotate in the reverse direction. By controlling the speed and output torque of the torque motor 40, the belt 2 is tightened with a set initial holding force F1 or a modified holding force F2 to bind the cup-shaped container placed in the cup slot 10.

[0120] Depending on the size and weight of the cup-shaped container, or depending on the vehicle's driving conditions, different holding forces can be used to tighten the cup-shaped container. This makes the force applied by the tightening mechanism 4 more targeted, which helps to further improve the reliability of the automatic tightening cup holder for placing cup-shaped containers.

[0121] In summary, the vehicle of this embodiment uses the above-described control method to control the automatic tightening cup holder. After a cup-shaped container is placed in the cup slot 10, the retraction speed of the belt 2 can be adjusted by controlling the torque motor 40. This prevents the belt 2 from relying solely on the spring to quickly rebound, thus avoiding risks such as the belt 2 rebounding and hitting the bottle body after the cup-shaped container is placed, abrading the through hole 302, and the inconvenience of fingers being squeezed when they are removed. This improves the operational comfort and safety of the automatic tightening cup holder.

[0122] Furthermore, by controlling the output torque of the torque motor 40, different holding forces can be applied to tighten the cup-shaped container according to its size, weight, and the vehicle's driving conditions, preventing it from falling and affecting the driver's operation, thus improving occupant safety. In the event of a collision, the torque motor 40 can be controlled to tighten and lock the cup-shaped container, further securing it and preventing it from flying out during the collision, thus avoiding impact on the human body or airbags and improving occupant safety.

[0123] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A control method for automatically tightening a cup holder, characterized in that, include: A strip is provided at the opening on one side of the cup slot (10) of the automatic tightening cup holder. The tightening mechanism (4) drives the strip (2) to move. First, an initial pre-tightening force is applied to the strip (2) so that the part of the strip (2) located at the opening is in the first state. Based on the increase in length of the portion of the strip (2) located at the opening relative to the first state or the signal change of the detection device located at the bottom of the cup slot (10), it is determined whether a cup-shaped container is placed in the cup slot (10). When it is determined that the cup-shaped container is placed in the cup slot (10), the tightening mechanism (4) is controlled to tighten the strip (2) with a set holding force so that the strip (2) is kept in the second state of binding the cup-shaped container; The control method further includes: The weight W of the cup-shaped container and the acceleration of the vehicle are obtained, and the driving condition of the vehicle is determined based on the acceleration, so as to determine the relative acceleration a between the vehicle and the cup-shaped container. The holding force is determined based on the relative acceleration a, the angle θ1 between the strip (2) in the second state and the strip (2) in the first state, and the weight W; and the liquid level height H1 in the cup-shaped container is calculated, and the holding force is corrected based on the height H2 of the strip (2) relative to the bottom of the cup (10) and the liquid level height H1. The included angle θ1 is determined based on the distance between the position on the inner wall of the cup groove (10) directly opposite the opening and the strip (2) in the first state, as well as the length of the portion of the strip (2) located at the opening in the first and second states.

2. The control method for automatically tightening the cup holder according to claim 1, characterized in that: The acquisition of vehicle acceleration includes: The system acquires suspension height signals, wheel speed signals, vehicle lateral acceleration signals, and braking acceleration signals of the braking system. It calculates the vehicle's driving acceleration based on the changes in the speed signals, determines the vehicle's lateral acceleration based on the lateral acceleration signals, and determines the vehicle's braking acceleration based on the braking acceleration signals. When the rate of change of the altitude signal is greater than a set rate of change, the driving condition is determined to be a severe condition. When the driving acceleration, the lateral acceleration, and the braking acceleration are all below the corresponding set thresholds, and the rate of change of the altitude signal is below the set rate of change, the driving condition is determined to be a stable condition. When at least one of the driving acceleration, the lateral acceleration, and the braking acceleration is greater than a corresponding set threshold, the driving condition is determined to be a motion condition. The relative acceleration 'a' is set for the stable working condition, the dynamic working condition, and the severe working condition, respectively.

3. The control method for automatically tightening the cup holder according to claim 2, characterized in that: Under the aforementioned stable operating conditions, the relative acceleration 'a' is set to 0.3G~0.7G; where G is the acceleration due to gravity. Under the aforementioned motion conditions, 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 slot (10); Under the aforementioned severe operating conditions, the relative acceleration 'a' is expressed by the following formula: a = k1a max Where k1 is a set coefficient greater than 1, and a max The maximum value of the relative acceleration 'a' under the aforementioned motion condition is recorded and statistically analyzed within a certain time period.

4. An automatic tightening cup holder, characterized in that: It includes a frame (3) and a strip (2) and a tightening mechanism (4) disposed on the frame (3), and the automatic tightening cup holder is controlled by the control method of the automatic tightening cup holder according to any one of claims 1 to 3; The frame (3) is formed with a cup groove (10) for placing a cup-shaped container, and one side of the cup groove (10) is provided with an opening; The strip (2) is located at the opening and can tighten the cup-shaped container placed in the cup groove (10) under the action of the tightening mechanism (4).

5. The automatic tightening cup holder according to claim 4, characterized in that: The frame (3) includes a side frame (30) that encloses the side wall of the cup slot (10) and a base (5) located at the bottom of the cup slot (10). The side frame (30) is provided with a fixing bracket and a hook (300) on the side opposite to the cup groove (10), and the fixing bracket and the hook (300) are respectively provided on both sides close to 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 spool (42) rotatably mounted on the fixed frame and a torque motor (40) for driving the spool (42) to rotate; the strip (2) is wound around the spool (42).

6. A vehicle, characterized in that: The vehicle is equipped with the automatic cup holder as described in claim 4 or 5.

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