![]() seat cushion of a vehicle seat and vehicle seat assembly
专利摘要:
VIBRATORY ALERT SYSTEM. A vehicle seat cushion includes a cushion made of foam and at least one engine assembly located on or near an upper surface of the cushion. The at least one motor assembly includes a plurality of transducer cells. 公开号:BR112015000103B1 申请号:R112015000103-3 申请日:2013-07-02 公开日:2020-12-22 发明作者:Christopher Mark Rockwell;Douglas J. Krueger Jr.;Anup Viswanathan;Daniel Jerome Wiegand 申请人:Toyota Boshoku America, Inc; IPC主号:
专利说明:
REFERENCE TO RELATED REQUESTS [001] The application claims priority for United States Provisional Application No. 61 / 667,614, filed on July 3, 2012. BACKGROUND OF THE INVENTION [002] A driver can be exposed to numerous signals and audible and visual stimuli while driving. If an event occurs while driving, an audio or visual alert can be generated to get the driver's attention. In one example, an event occurs when a sensor detects that a vehicle deviates from its lane. However, due to numerous other sound and visual signals and stimuli to which the driver is exposed, an audio or visual alert may not get the driver's attention. [003] A tactile alert can be provided to alert the driver of an event. In one example, an engine located on a seat cushion vibrates when an event occurs to provide a tactile alert for the driver. Previous engines include a metal engine housing including portions that are attached together by fasteners. SUMMARY OF THE INVENTION [004] The seat cushion of a vehicle seat includes a cushion made of foam and at least one engine assembly located on or near an upper surface of the cushion. The at least one motor assembly includes a plurality of transducer cells. [005] A vehicle seat assembly includes a cushion made of foam and at least one engine assembly located on or near an upper surface of the cushion. The least pad. The at least one motor assembly includes a tissue piece and a plurality of transducer cells embedded within the tissue piece to define a vibrating alert system. The plurality of transducer cells are connected in series via cables, and the at least one engine assembly vibrates in response to a road event. The vehicle seat cushion assembly includes a sensor to detect the road event and a controller. The sensor sends a signal to the controller after detecting a road event, and the controller sends another signal to the at least one motor assembly to make the at least one motor assembly vibrate. [006] These and other features of the present invention can be better understood from the following specification and drawings, the following of which is a brief description. BRIEF DESCRIPTION OF THE DRAWINGS [007] Figure 1 illustrates a perspective view of a vehicle seat cushion; [008] Figure 2 illustrates the internal components of a vibrating alert system; [009] Figure 3 illustrates a cross-sectional view of the vibrating alert system; [010] Figure 4 illustrates a top view of a vibrating alert system; [011] Figure 5 illustrates a vibrating alert system transducer cell; [012] Figure 6 illustrates an exploded view of the transducer cell in Figure 5; [013] Figure 7 illustrates a perspective view of the ventilation foam pad on an upper surface of the pad; [014] Figure 8 illustrates a perspective view of foam placed on vibrating warning systems; [015] Figure 9 illustrates a cross-sectional view of a lateral support of the cushion and the vibrating alert system; and [016] Figure 10 illustrates a vehicle seat including an example of configuring vibrating warning systems. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [017] Figure 1 illustrates a cushion 20 of a vehicle seat 64. In one example, vehicle seat 64 is a driver's seat. The cushion 20 is formed by a molding process and includes a seat portion 22 having a substantially flat top surface 24 and two side supports 26, each located on one side of the seat portion 22. In one example, the cushion 20 is made foam. In one example, pad 20 is made of polyurethane foam. Pad 20 includes a preformed recess 28 formed during the molding process. In one example, each of the two side supports 26 includes a preformed recess 28. A vibrating warning system 30 which is a haptic motor is located on the pad 20 on each of the preformed recesses 28. [018] Figure 2 illustrates internal components of a haptic motor, for example, a vibrating alert system 30. The vibrating alert system 30 includes an array of transducer cells 32. In one example, there are four transducer cells 32. In one example, transducer cells 32 are each Linear Resonant Actuator (LRA). In one example, transducer cells 32 are each coin-style transducer cells. Although a linear resonant actuator is illustrated and described, transducer cells 32 can each be a vibrating surface transducer cell or an eccentric rotating mass motor (ERM). [019] The transducer cells 32 each have a nominal voltage of about 2 V RMS. The transducer cells 32 have the same phase and frequency, and the vibration from each of the transducer cells 32 is added to a total vibration applied to the seating surface. In one example, transducer cells 32 have a high G-force rating. In one example, transducer cells 32 have a G-force rating of about 1.4 G. [020] In one example, transducer cells 32 are connected in series by cables 34 to achieve a desired vibrating alert. In another example, transducer cells 32 are connected in parallel via cables 34 to achieve a desired vibrating alert. Transducer cells 32 can also be connected in series and in parallel by cables 34 to achieve a desired vibrating alert. Transducer cells 32 employ AC voltage at a specific frequency to generate vibration resonance. [021] In one example, each transducer cell 32 has the same phase and frequency. The vibrating alert of the transducer cells 32 are added together to define the desired vibrating alert. The additive nature of the vibrations can be affected by the spacing of the transducer cells 32. The nature of the vibrations can also be affected by the stiffness and damping of a flexible mounting medium 44, described below. In one example, the vibrating alert is about 12 volts. In one example, the vibrating alert is between about 9 volts and about 16 volts. [022] Transducer cells 32 are located between portions 36a and 36b of a piece of fabric 36. In one example, the piece of fabric 36 is polyester cloth. The piece of fabric 36 is folded along a fold 38 to define portions 36a and 36b. As shown in Figure 3, portions 36a and 36b are attached to each other by an adhesive to retain and completely coat the transducer cells 32 between them, as shown in Figure 4. In one example, the adhesive is a polyester adhesive . [023] The vibrating alert system 30 is thin and flexible, which allows adhesion directly on the molded pad 20. In one example, the vibrating alert system 30 has a thickness of about X +/- 1 mm. In one example, X is about 3 mm. Cables 35 extend out of the vibrating alert system 30 for connection to a controller 60, as explained below. [024] In one example, instead of cables 34, transducer cells 32 are mounted on flexible mounting means 44. In one example, flexible mounting means 44 is a printed circuit. In one example, the flexible mounting medium 44 is a polyester sheet. In one example, mounting medium 44 is Mylar®, a registered trademark of E.I. Du Pont de Nemours and Compania of Wilmington, Delaware. [025] In another example, transducer cells 32 are encapsulated in a system. In one example, the system is made of rubber. Using a system, transducer cells 32 can be located close to the occupant. [026] A microcontroller (not shown) sends percentage signals of multiple output PWM (pulse width modulation) that control motor drive circuits (for example, emit an AC signal at 175 Hz 2 V RMS) to each cell transducer 32 to provide a desired level of control. The system can produce haptic vibrations through a plurality of vibrating transducer arrangements and drive patterns. [027] In one example, each transducer cell 32 is a Linear Resonant Actuator Precsion Microdrives Precision Haptic Y-Axis. Figure 5 illustrates a linear resonant actuator (ERS) including cables 34. [028] Figure 6 illustrates an exploded view of transducer cell 32 in Figure 5. Transducer cell 32 (the Linear Resonating Actuator) includes an engine cover 68 and an engine chassis 70 that defines the outer body of the control cell. transducer 32. Contained within the engine cover 68 and the engine chassis 70 is a wave spring 72, a movement mass 74, a voice coil 76, and a flexible printed circuit board 78 (PCB) to which the cables 34 are connected which includes an opening 84. The voice coil 76 is received at the opening 84 of the printed circuit board 78. The moving mass 74 includes a voice coil head 80 and a Neodymium magnet NeFeB 82. [029] The Linear Resonant Actuator is driven by an AC signal through the cables 34. Current conducted through the voice coil 76 produces a magnetic field, which causes the NeFeB 82 neodymium magnet in the movement mass 74 to react with the voice coil 76, causing the movement mass 74 to move. The contact of the waveform 72 with the movement mass 74 creates a resonance effect that produces vibrations. [030] In an example, each transducer cell 32, or Linear Resonant Actuator in Figures 5 and 6, has the following parameters: [031] Figure 7 illustrates a perspective view of pad 20 that includes two preformed recesses 28 and a vibrating alert system 30 located in each of the preformed recesses 28. Although only two preformed recesses 28 and two vibrating alert 30 are illustrated and described, any number of vibrating alert systems 30 can be positioned on pad 20 in any location or configuration. A mat 50 can be located on the flat top surface 24 of the seat portion 22 of the cushion 20. The mat 50 includes holes 52 that allow ventilation. In one example, mat 50 is made of polyester. [032] Figure 8 illustrates a perspective of the cushion 20 including a foam layer 54 located along each of the two vibrating warning systems 30 on an outer surface of the cushion 20. The foam layer 54 provides additional cushioning to protect the two vibrating warning systems 30 and also prevents the two vibrating warning systems 30 from causing driver discomfort. In one example, each foam layer 54 is made of polyurethane. In one example, the foam layer 54 has a thickness of about +/- Y of 1 mm. In one example, Y represents 5. In another example, the two vibrating warning systems 30 are incorporated into the pad 20 during the molding process near an upper surface of the pad 20, and the foam layer 54 is not required. [033] Figure 9 shows a cross-sectional view of one of the side supports 26 of the pad 20 taken along line AA of Figure 8. An adhesive 56 can be used to hold the vibrating warning systems 30 in the preformed recess. 26. The rim cover 58 is located above the cushion 20 and provides an outer surface of the vehicle seat 64 on which the driver sits while driving. [034] Returning to Figure 1, cables 34 allow communication between the vibrating alert system 30 and a controller 60. Controller 60 is also in communication with a sensor 62 that detects a road event. In one example, a road event occurs when the vehicle moves from its lane, another vehicle is approaching, a frontal collision occurs or a rear collision occurs. When sensor 62 detects a road event, a signal is sent to controller 60. Controller 60 then sends a signal to vibrating alert system 30 in response to the signal from sensor 62. In response to signal from controller 60, the vibrating alert system 30 vibrates on the pad 20, to provide a tactile and feedback signal that can be felt by the driver to alert the driver of the road event. In one example, the vibrating alert system 30 vibrates above 50 m / s2 as measured on a seat occupant interface at approximately 175 Hz. By spacing the transducer cells 32, the vibration detection can be increased. [035] In another example, the signal from controller 60 can be amplified by an optional amplifier 90 (shown in Figure 4) to power multiple devices. In another example, controller 60 can send the signal at a less frequent interval to reduce the frequency of resonant vibration. [036] Figure 10 illustrates a vehicle seat 64 including cushion 20 and a backrest 66 including six vibrating warning systems 30a, 30b, 30c, 30d, 30e and 30f. The vibrating alert system 30a and 30b is each located on one of the two seat supports 26. A vibrating alert system 30c is located on the seat portion 22 between the two seat supports 26. Three vibrating alert systems 30d, 30e and 30f are located on the backrest 66. The vibrating warning systems 30d and 30e are aligned with the vibrating warning systems 30a and 30b, respectively, on the side supports 26. The vibrating warning system 30f is aligned with the vibrating warning system 30c . Figure 10 shows an example of a vibrating alert system 30 configuration or arrangements. However, vibrating alert systems 30 can be located in any configuration. [037] The above description is only an example of the principles of the invention. Many modifications and variations are possible in light of the previous teachings. It is, therefore, to be understood that within the scope of the appended claims, the invention can be practiced in another way than using the examples of modalities that have been specifically described. For this reason, the following claims must be studied to determine the true scope and content of this invention.
权利要求:
Claims (21) [0001] 1. Seat cushion (20) of a vehicle seat (64), the seat cushion (20) characterized by the fact that it comprises: a cushion (20) made of foam, on which the cushion has an upper surface (24 ); and at least one motor assembly located on or near the upper surface of the pad, wherein the at least one motor assembly includes a plurality of transducer cells (32), wherein at least one motor assembly includes a piece of fabric (36), the plurality of transducer cells (32) are wrapped within a piece of tissue (36) to define a vibrating alert system (30), and the vibrating alert system (30) is flexible. [0002] 2. Seat cushion according to claim 1, characterized in that the cushion (20) is made of polyurethane foam. [0003] Seat cushion according to claim 1, characterized in that the cushion (20) includes a seat portion (22) having a flat surface and a support (26) on each side of the seat portion (22 ), the at least one engine assembly includes two vibrating warning systems (30) and one of the two vibrating warning systems is located on one of the side supports (26). [0004] 4. Seat cushion according to claim 1, characterized by the fact that the at least one engine assembly vibrates in response to a road event. [0005] 5. Seat cushion according to claim 4, characterized by the fact that a sensor (62) detects the road event, sends a signal to a controller (60) after detecting a road event, and the controller (60) sends another signal to at least one motor assembly to make at least one motor assembly vibrate. [0006] 6. Seat cushion according to claim 1, characterized by the fact that the plurality of transducer cells (32) are connected in series by cables (34). [0007] 7. Seat cushion according to claim 1, characterized by the fact that the plurality of transducer cells (32) are linear resonant actuators. [0008] 8. Seat cushion according to claim 1, characterized by the fact that the plurality of transducer cells (32) generates a combined voltage of 9 to 16 volts. [0009] 9. Seat cushion according to claim 1, characterized by the fact that the piece of fabric (36) is polyester cloth. [0010] 10. Seat cushion according to claim 1, characterized by the fact that the vibrating alert system (30) has a thickness of 3 mm. [0011] 11. Seat cushion according to claim 1, characterized by the fact that the plurality of transducer cells (32) is mounted in an assembly means (44). [0012] 12. Seat cushion according to claim 11, characterized in that the mounting means (44) is a polyester sheet. [0013] 13. Seat cushion according to claim 1, characterized in that a foam layer (54) is placed over at least one motor assembly. [0014] 14. Vehicle seat set characterized by a skin comprising: a cushion made of foam (20), the cushion having an upper surface (24); at least one motor assembly located on or near the upper surface of the pad, wherein the at least one motor assembly includes a piece of tissue and a plurality of transducer cells (32) fitted within the piece of tissue to define a vibrating alert system, to The plurality of transducer cells (32) are connected in series by cables (34), the at least one motor assembly vibrates in response to a road event, and the vibrating alert system is flexible. a sensor (62) for detecting the road event; and a controller (60), where the sensor (62) sends a signal to the controller (60) after detecting a road event, and the controller (60) sends another signal to at least one motor assembly to coat unless a motor assembly vibrates. [0015] 15. Vehicle seat assembly according to claim 14, characterized in that the cushion (20) is made of polyurethane foam. [0016] 16. Vehicle seat assembly, according to claim 14, characterized by the fact that transducer cell aplurality (32) are linear resonating actuators. [0017] 17. Vehicle seat assembly according to claim 14, characterized by the fact that the detained part (36) is polyester cloth. [0018] 18. Vehicle seat assembly according to claim 14, characterized by the fact that the vibrating alert system (30) has a thickness of 3 mm. [0019] 19. Vehicle seat assembly according to claim 14, characterized in that a foam layer (54) is placed on at least one demotor assembly. [0020] 20. Seat cushion according to claim 1, characterized in that the piece of fabric (36) is a single unitary piece of fabric. [0021] 21. Seat cushion according to claim 1, characterized by the fact that the plurality of transducer cells (32) is completely surrounded by the detained part (36).
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引用文献:
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法律状态:
2018-03-27| B15K| Others concerning applications: alteration of classification|Ipc: B60N 2/00 (2006.01) | 2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law| 2020-02-04| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure| 2020-11-10| B09A| Decision: intention to grant| 2020-12-22| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 02/07/2013, OBSERVADAS AS CONDICOES LEGAIS. |
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申请号 | 申请日 | 专利标题 US201261667614P| true| 2012-07-03|2012-07-03| US61/667,614|2012-07-03| PCT/US2013/049050|WO2014008251A1|2012-07-03|2013-07-02|Vibratory alert patch| 相关专利
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