Car multimedia terminal

Abstract

The car multimedia terminal relates to the field of car instruments. The present invention is to solve the problem that the vehicle will vibrate during driving, and the manually rotating central control screen will automatically rotate to a certain angle due to inertia to overcome the damping, resulting in a deviation from the angle manually adjusted by the user. The present invention includes a central control screen, a rotating mechanism and a locking mechanism. The rotating mechanism includes a base and a rotating shaft. The base is fixed to the center console of the car. The rotating shaft is rotatably connected to the base through a bearing, and the central control screen is fixed to one end of the rotating shaft; the locking mechanism includes a turntable, a pin and a delayed unlocking component. The turntable is fixed to the rotating shaft, and a plurality of locking bayonet holes are provided on the edge of the turntable. The delayed unlocking component can drive the pin to engage in the locking bayonet hole or withdraw from the locking bayonet hole to lock the angle of the central control screen or unlock the central control screen so that it can rotate; when the user continuously applies force to the central control screen to adjust the angle of the central control screen, the delayed unlocking component drives the pin to slowly withdraw from the locking bayonet hole to delay unlocking the central control screen.

Description

Technical Field

[0001] The present invention relates to the field of automobile instruments, and in particular to an automobile multimedia terminal. Background Art

[0002] A car's central control screen is a screen built into the vehicle, typically located on the center console in front of the driver. It serves as the hub of the vehicle's control and display systems and a crucial component of the in-car infotainment system. Some current car central control screens can rotate, switching between landscape and portrait modes to accommodate different scenarios or users. There are two types of central control screen rotation: manual and automatic. Manually rotating central control screens typically rely on damping to maintain their position after rotation. However, during vehicle vibration and bumps, the central control screen overcomes the damping and automatically rotates to a certain angle due to inertia, resulting in a deviation from the user's manually adjusted angle. Maintaining the user-adjusted angle requires manual readjustment after the bumpy ride, resulting in a poor user experience. Summary of the Invention

[0003] In view of this, the present invention provides an automobile multimedia terminal, which can delay unlocking of the central control screen so as to adjust the angle of the central control screen when the user continues to apply force to the central control screen.

[0004] To achieve the above objectives, the present invention provides the following technical solutions.

[0005] 1. Car multimedia terminal, including:

[0006] Central control screen;

[0007] The rotating mechanism includes a base and a rotating shaft. The base is fixed to the center console of the car. The rotating shaft is rotatably connected to the base through a bearing. The center console screen is fixed to one end of the rotating shaft.

[0008] The locking mechanism includes a turntable, a latch and a delayed unlocking assembly. The turntable is fixed to the rotating shaft and has multiple locking bayonets on the edge of the turntable. The delayed unlocking assembly can drive the latch to engage in or exit from the locking bayonets to lock the angle of the central control screen or unlock the central control screen so that it can rotate;

[0009] When the user continues to apply force to the central control screen to adjust the angle of the central control screen, the delayed unlocking component drives the pin to slowly withdraw from the locking bayonet to delay unlocking the central control screen.

[0010] When the user continuously applies force to rotate the central control screen to adjust its angle, the continuous rotational force is transmitted to the delayed unlocking assembly via the rotating shaft, turntable, and latch pin in sequence. The delayed unlocking assembly drives the latch pin to slowly withdraw from the locking notch, thereby delaying the unlocking of the central control screen and adjusting its angle. When the vehicle experiences bumps and vibrations during driving, the central control screen will vibrate due to inertia, and the vibration duration is relatively short. Therefore, the inertial force exerted on the central control screen is an instantaneous force, which is transmitted to the delayed unlocking assembly via the rotating shaft, turntable, and latch pin. Although the delayed unlocking assembly can drive the latch pin to move outward from the locking notch under this instantaneous force, due to the slow movement speed of the latch pin, this instantaneous force is insufficient to completely withdraw the latch pin from the locking notch. Therefore, the locking mechanism cannot be unlocked, thereby preventing the central control screen from deviating at a large angle when the vehicle is bumpy and vibrating.

[0011] 2. Based on the technical solution 1, the outer diameter of the bayonet is smaller than the diameter of the locking bayonet, so that the bayonet can swing left and right in the locking bayonet;

[0012] The delayed unlocking components include:

[0013] The locking cylinder is mounted on the base and can swing left and right. The locking cylinder is provided with a locking piston rod. The locking piston rod is connected to the bayonet pin and can extend or retract the locking cylinder.

[0014] A swing rod, one end of which is connected to the locking cylinder and can swing with the locking cylinder, and the other end of which extends downward;

[0015] There are two unlocking cylinders, which are symmetrically arranged on both sides of the swing arm and are respectively connected to the locking cylinder. Each unlocking cylinder is provided with an unlocking piston rod and a small hole drain valve. The unlocking piston rod is arranged toward the swing arm and can move left and right. The small hole drain valve is installed at the discharge port of the unlocking cylinder;

[0016] When the central control screen is subjected to continuous rotational force, the lock cylinder is driven to swing through the turntable and the pin. While the rocker arm swings with the lock cylinder, it contacts and squeezes the unlocking piston rod to move into the unlocking cylinder. The hydraulic oil in the unlocking cylinder is slowly pressed into the lock cylinder through the small hole drain valve, so that the lock piston rod drives the pin to slowly withdraw from the lock bayonet.

[0017] 3. Based on Technical Solution 2, the bayonet pin is T-shaped, the end with a larger outer diameter of the bayonet pin is located in the locking bayonet socket, and the end with a smaller outer diameter is connected to the locking piston rod.

[0018] 4. Based on Technical Solution 2, the small-hole drain valve is a one-way valve, and can flip toward the unlocking piston rod side when the hydraulic oil in the locking cylinder flows back into the unlocking cylinder, so as to speed up the speed at which the pin is engaged in the locking bayonet when the central control screen is rotated into place.

[0019] 5. Based on Technical Solution 1, it also includes a brake mechanism, which is connected to the rotating shaft to stop the central control screen when the speed of the central control screen exceeds a preset speed.

[0020] 6. Based on Technical Solution 5, the brake mechanism includes:

[0021] An outer friction ring is mounted on the base and is coaxially arranged with the rotating shaft, and the inner ring surface of the outer friction ring serves as a braking friction surface;

[0022] The inner friction ring is concentrically arranged inside the outer friction ring and can move eccentrically, and the inner and outer ring surfaces of the inner friction ring are both friction surfaces;

[0023] A rotary lever is installed in the inner friction ring and fixedly connected to the rotating shaft. A push pin is provided at one end of the rotary lever. The push pin can move along the length direction of the rotary lever. The push pin contacts and squeezes the inner ring surface of the inner friction ring. The other end of the rotary lever is hingedly connected to the inner ring surface of the inner friction ring.

[0024] When the rotation speed of the central control screen exceeds the preset speed, the rotary lever rotates in the inner friction ring and drives the inner friction ring to move eccentrically to one side of the outer friction ring. When the inner friction ring hits and squeezes the braking friction surface of the outer friction ring, the outer friction ring stops the inner friction ring, so that the rotary lever stops the central control screen.

[0025] 7. Based on Technical Solution 6, the inner surface of the inner friction ring is in a racetrack shape. When the inner friction ring and the rotary lever are in the initial position, the rotary lever is on the long axis of the inner surface.

[0026] 8. Based on Technical Solution 6, the brake mechanism also includes:

[0027] A rubber ring is coaxially sleeved on the outer side of the outer friction ring and contacts the outer ring surface of the outer friction ring. The rubber ring is filled with a non-Newtonian fluid.

[0028] The limiting ring is arranged on the outer side of the outer friction ring, and a plurality of sliding grooves are evenly arranged on the limiting ring along the circumferential direction, and each sliding groove extends in the radial direction;

[0029] The outer friction ring is composed of several brake friction pads evenly arranged in the circumference. Each brake friction pad corresponds to a set of slide grooves. The outer end surface of the brake friction pad is provided with a sliding pin, and the brake friction pad and the slide groove are connected by the sliding pin.

[0030] When the brake friction pad is hit by the inner friction ring, it moves outward and hits the non-Newtonian fluid in the rubber ring, causing the non-Newtonian fluid to solidify under force and stop the central control screen; after the central control screen is stopped, the non-Newtonian fluid returns from a solidified state to a fluid state, and the brake mechanism is unlocked, allowing the user to continue to apply force to slowly rotate the central control screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The figure is a schematic diagram of the three-dimensional structure of the automobile multimedia terminal of the present invention installed on the center console of the automobile.

[0032] Figure 2 The figure is a schematic diagram of the three-dimensional structure of the automobile multimedia terminal of the present invention.

[0033] Figure 3 It is a structural schematic diagram of the locking mechanism in the locked state.

[0034] Figure 4 for Figure 3 Enlarged schematic diagram of point A in the middle.

[0035] Figure 5 It is a schematic diagram of the three-dimensional structure of the brake mechanism and the locking mechanism.

[0036] Figure 6 This is a structural diagram of the brake mechanism after removing the limit plate.

[0037] Figure 7 It is a cross-sectional schematic diagram of the automobile multimedia terminal of the present invention.

[0038] Reference numerals include:

[0039] Central control screen 1;

[0040] Rotating mechanism 2, base 21, rotating shaft 22;

[0041] Locking mechanism 3, rotary disk 31, locking bayonet 311, bayonet pin 32, delayed unlocking assembly 33, locking cylinder 331, locking piston rod 3311, locking spring 3312, rocker arm 332, unlocking cylinder 333, unlocking piston rod 3331, unlocking spring 3332, small hole drain valve 3333;

[0042] Braking mechanism 4, outer friction ring 41, brake friction plate 411, sliding pin 4111, inner friction ring 42, rotary lever 43, groove 431, top pin 432, return spring 433, connecting rod 44, rubber ring 45, limiting ring 46, sliding groove 461. DETAILED DESCRIPTION

[0043] The present invention is described in detail below with reference to specific embodiments.

[0044] like Figure 1 、 Figure 2 and Figure 3 As shown, the car multimedia terminal of this embodiment includes a central control screen 1, a rotating mechanism 2 and a locking mechanism 3. Figure 2 and Figure 3As shown, the rotating mechanism 2 includes a base 21 and a rotating shaft 22. The base 21 is fixed to the center console of the car. The rotating shaft 22 is rotatably connected to the base 21 through a bearing. The center console 1 is fixed to one end of the rotating shaft 22. Figure 3 As shown, the locking mechanism 3 includes a turntable 31, a latch 32 and a delayed unlocking assembly 33. The turntable 31 is fixed to the rotating shaft 22. A plurality of evenly arranged locking bayonet holes 311 are provided on the edge of the turntable 31. The preferred number of locking bayonet holes 311 is 4. They are evenly distributed on the edge of the turntable 31, one every 90 degrees. In this way, when the latch 32 is engaged in different locking bayonet holes 311, the central control screen 1 can be in landscape or portrait mode. The delayed unlocking assembly 33 can drive the latch 32 to engage in the locking bayonet hole 311 or exit from the locking bayonet hole 311 to lock the angle of the central control screen 1 or unlock the central control screen 1 so that it can rotate. The locking mechanism 3 has a delayed unlocking function. Only when continuous force is applied to rotate the central control screen 1 can the locking mechanism 3 be unlocked to achieve the adjustment of the angle of the central control screen 1. Specifically, when a user continuously applies force to rotate the central control screen 1 to adjust its angle, the continuous rotational force is transmitted to the delayed unlocking assembly 33 via the rotating shaft 22, the rotating disk 31, and the latch 32. The delayed unlocking assembly 33 then slowly drives the latch 32 out of the locking notch 311, thereby delaying the unlocking of the central control screen 1 and adjusting its angle. When a vehicle experiences jolting vibrations during driving, the central control screen 1 vibrates due to inertia, and the vibration duration is relatively short. Therefore, the inertial force acting on the central control screen 1 is instantaneous, which is transmitted to the delayed unlocking assembly 33 via the rotating shaft 22, the rotating disk 31, and the latch 32. Although the delayed unlocking assembly 33 can drive the latch 32 outward from the locking notch 311 under this instantaneous force, due to the slow movement of the latch 32, this instantaneous force is insufficient to completely withdraw the latch 32 from the locking notch 311, preventing the locking mechanism 3 from unlocking. This prevents the central control screen 1 from deflecting at a large angle due to jolting vibrations.

[0045] like Figure 3 As shown, it is a schematic diagram of the structure of the locking mechanism 3 in the locked state. In the figure, the cylinder body of the locking cylinder 331 and the cylinder body of the unlocking cylinder 333 are set to a perspective state to facilitate the viewing of the internal structures of the locking cylinder 331 and the unlocking cylinder 333. The delayed unlocking assembly 33 of this embodiment includes the locking cylinder 331, the rocker 332 and the unlocking cylinder 333. The locking cylinder 331 is arranged directly below the turntable 31. The locking cylinder 331 is mounted on the base 21 via a rotating shaft and can swing left and right, wherein the rotating shaft is arranged close to the turntable 31. Figure 3As shown, the locking cylinder 331 is provided with a locking piston rod 3311 and a locking spring 3312. The locking spring 3312 is installed in the oil chamber of the locking cylinder 331. One end of the locking piston rod 3311 is set in the oil chamber of the locking cylinder 331 and contacts the locking spring 3312. The other end of the locking piston rod 3311 is connected to the latch 32 and can extend or retract into the locking cylinder 331. One end of the swing rod 332 is connected to the locking cylinder 331 and can swing with the locking cylinder 331. The other end extends downward. Figure 3 As shown, there are two unlocking cylinders 333, which are symmetrically arranged on the left and right sides of the lower end of the swing rod 332 and are respectively connected to the locking cylinder 331; Figure 4 As shown, each unlocking oil cylinder 333 is provided with an unlocking piston rod 3331, an unlocking spring 3332 and a small hole drain valve 3333. The unlocking spring 3332 is arranged in the oil chamber of the unlocking oil cylinder 333. One end of the unlocking piston rod 3331 is arranged in the oil chamber of the unlocking oil cylinder 333 and contacts the unlocking spring 3332. The other end of the unlocking piston rod 3331 is arranged toward the rocker arm 332. The unlocking piston rod 3331 can move left and right. The small hole drain valve 3333 is installed at the drain port of the unlocking oil cylinder 333. Figure 2 、 Figure 3 and Figure 4 As shown, when the user continuously applies force to the central control screen 1 to adjust the angle of the central control screen 1, the force is transmitted to the turntable 31 via the central control screen 1 and the rotating shaft 22. The driving force of the locking bayonet 311 of the turntable 31 on the bayonet pin 32 and the locking cylinder 331 is a lateral force. Since the locking cylinder 331 is installed on the base 21 via the rotating shaft and can swing left and right, a lever supported by the rotating shaft is formed between the locking cylinder 331 and the swing rod 332. Figure 3The lock pin 331 is locked and the lock pin 332 is unlocked, so the lock pin 332 is unlocked and the lock pin 333 is unlocked. 1. The unlocking piston rod 3331 moves into the unlocking cylinder 333, squeezing the unlocking spring 3332 and simultaneously pressuring the hydraulic oil in the unlocking cylinder 333 into the locking cylinder 331. Due to the configuration of the orifice drain valve 3333, the hydraulic oil flows slowly into the locking cylinder 331, causing the locking piston rod 3311 to retract slowly into the locking cylinder 331. The locking piston rod 3311 then drives the detent 32 slowly out of the locking notch 311, thus achieving the delayed unlocking function of the locking mechanism 3. When the detent 32 is fully withdrawn from the locking notch 311, the rotating disk 31 rotates to one side under the force applied by the user and no longer causes the detent 32 to deflect. At this point, the detent 32 abuts against the edge of the rotating disk 31 under the rebound force of the locking spring 3312 and cannot return to its original position. The locking cylinder 331 and the rocker arm 332 are in a state of negative pressure, and the ... The hydraulic oil in the cylinder 331 partially flows back to the unlocking cylinder 333, but since the pin 32 is always against the edge of the turntable 31, the locking spring 3312 is always in a compressed state. When the next locking bayonet 311 of the turntable 31 is aligned with the pin 32 again, the locking piston rod 3311 drives the pin 32 to move up and reset under the rebound force of the locking spring 3312, and the pin 32 can be locked into the locking bayonet 311 of the turntable 31 again to lock the position of the central control screen 1.

[0046] It should be noted that since the delayed unlocking assembly 33 unlocks the chuck only when the latch 32 deflects under the lateral force, in order to ensure that the latch 32 can deflect in the locking bayonet 311 and can be smoothly removed from the locking bayonet 311, the outer diameter of the latch 32 must be smaller than the inner diameter of the locking bayonet 311. Figure 3 As shown, the bayonet pin 32 is T-shaped, with the end of the bayonet pin 32 having a larger outer diameter being located in the locking bayonet hole 311 , and the end of the bayonet pin 32 having a smaller outer diameter being connected to the locking piston rod 3311 .

[0047] like Figure 4As shown, the small hole drain valve 3333 of this embodiment is a one-way valve, and can flip toward the unlocking piston rod 3331 when the hydraulic oil in the locking cylinder 331 flows back into the unlocking cylinder 333. This design can accelerate the speed at which the latch 32 is engaged with the locking bayonet 311 when the central control screen 1 is rotated into position. Specifically, when the central control screen 1 is rotated into position, the locking bayonet 311 on the turntable 31 is aligned with the latch 32, and the latch 32 and the locking piston rod 3311 move upward under the rebound force of the locking spring 3312. The hydraulic oil in the locking cylinder 331 flows back into the unlocking cylinder 333, and the small hole drain valve 3333 opens under the pressure of the hydraulic oil. The flow area of ​​the hydraulic oil increases, thereby accelerating the return speed of the hydraulic oil, thereby increasing the speed at which the latch 32 moves upward, and accelerating the speed at which the locking mechanism 3 locks the central control screen 1.

[0048] When the user continuously applies force to rotate the central control screen 1, the locking mechanism 3 is unlocked with a delay, which makes the unlocking process of the central control screen 1 slow, that is, it cannot rotate at the moment of force application, which may cause the user to mistakenly believe that the central control screen 1 cannot rotate due to insufficient force, so the user will increase the force applied. After the locking mechanism 3 is unlocked, the central control screen 1 will rotate rapidly under the action of a larger force and inertia. This causes the central control screen 1 to have a large rotational inertia when the locking mechanism 3 re-locks the central control screen 1, resulting in a large inertia of the rotating shaft 22 and the turntable 31 connected thereto. When the locking bayonet 311 is aligned with the bayonet 32, the locking bayonet 311 has a large impact force on the bayonet 32, which may cause the bayonet 32 ​​and the delayed unlocking component 33 to be damaged due to the large impact force, or the turntable 31 may rotate before it has time to be locked by the bayonet 32, causing the rotation angle of the central control screen 1 to exceed the angle the user wants to adjust. Figure 5 、 Figure 6 and Figure 7 As shown, this embodiment further includes a brake mechanism 4 connected to the rotating shaft 22 to brake the central control screen 1 when its rotation speed exceeds a preset speed. At the moment the central control screen 1 is unlocked and rotates rapidly, the brake mechanism 4 reduces the rotation speed of the central control screen 1 via the rotating shaft 22 until the central control screen 1 stops. When the user applies force to rotate the central control screen 1 again, the central control screen 1 rotates slowly. The central control screen 1 controls the rotating disk 31 to rotate slowly via the rotating shaft 22. In this way, when the locking bayonet 311 aligns with the latch 32, the latch 32 can be smoothly engaged with the locking bayonet 311 under the drive of the delayed unlocking assembly 33, thereby locking the central control screen 1. At the same time, due to the low rotation speed of the rotating disk 31, the impact force exerted on the latch 32 and the delayed unlocking assembly 33 when the latch 32 is engaged with the locking bayonet 311 of the rotating disk 31 is small, thereby preventing the latch 32 and the delayed unlocking assembly 33 from being damaged by the large impact force.

[0049] like Figure 5 、 Figure 6 and Figure 7As shown, the brake mechanism 4 of this embodiment includes an outer friction ring 41, an inner friction ring 42, a rotating lever 43, and a connecting rod 44, which are arranged concentrically. The outer friction ring 41 is mounted on the base 21 and is coaxial with the rotating shaft 22. The inner ring surface of the outer friction ring 41 serves as a braking friction surface. The inner friction ring 42 is arranged inside the outer friction ring 41 and can move eccentrically. Both the inner and outer ring surfaces of the inner friction ring 42 serve as friction surfaces. Figure 7 As shown, the rotating lever 43 is installed in the inner friction ring 42 and fixed to the rotating shaft 22. Figure 5 and Figure 6 As shown, the inner surface of the inner friction ring 42 is in the shape of a racetrack. When the inner friction ring 42 and the rotating lever 43 are in the initial position, the rotating lever 43 is located on the long axis of the inner surface. Figure 7As shown, a groove 431 is formed at one end of the rotary lever 43, and a push pin 432 and a return spring 433 are provided. The return spring 433 is installed in the groove 431. One end of the push pin 432 is set in the groove 431 and contacts the return spring 433, so that the push pin 432 can move along the length direction of the rotary lever 43. The other end of the push pin 432 contacts and squeezes the inner ring surface of the inner friction ring 42. The other end of the rotary lever 43 is hinged to the inner ring surface of the inner friction ring 42 via the connecting rod 44. Since the inner ring surface and the outer ring surface of the inner friction ring 42 are both friction surfaces, the top pin 432 of the rotating lever 43 contacts and squeezes the inner ring surface of the inner friction ring 42 under the elastic force of the extrusion spring. When the rotation speed of the central control screen 1 is lower than the preset speed, the driving force received by the rotating lever 43 is lower than the static friction force between the top pin 432 and the inner friction ring 42. At this time, the rotating lever 43 and the inner friction ring 42 remain relatively stationary, that is, the two can be regarded as one. The rotating lever 43 drives the inner friction ring 42 to rotate with the rotating shaft 22. At this time, the inner friction ring 42 and the rotating shaft 22 still remain concentric, and the central control screen 1 can rotate slowly to adjust the angle. When the rotation speed of the central control screen 1 exceeds the preset speed, the central control screen 1 drives the rotary lever 43 to rotate under the inertia force. The driving force on the rotary lever 43 is greater than the maximum static friction between the top pin 432 and the inner friction ring 42. The rotary lever 43 drives the top pin 432 to rotate toward one side of the inner friction ring 42. At the same time, the rotary lever 43 drives the inner friction ring 42 to accelerate eccentric movement toward the other side. The distance between the inner friction ring 42 and the inner ring surface of the outer friction ring 41 gradually decreases until the outer ring surface of the inner friction ring 42 contacts and squeezes the braking friction surface of the outer friction ring 41. As the inner friction ring 4 The greater the eccentric movement distance, the greater the squeezing force between the inner friction ring 42 and the outer friction ring 41, and the greater the sliding friction force of the braking friction surface on the inner friction ring 42. When the combined sliding friction force and the sliding friction force between the inner friction ring 42 and the rotating lever 43 exceeds the driving force of the rotating lever 43 on the inner friction ring 42, the inner friction ring 42 stops rotating. However, the middle position of the rotating lever 43 is restricted by the rotating shaft 22, and the other end of the rotating lever 43 is also restricted by the inner friction ring 42. Therefore, the rotating lever 43 cannot rotate at this time, and the rotating lever 43 stops the central control screen 1 via the rotating shaft 22. At this time, the central control screen 1 is rotated in the opposite direction. The central control screen 1 drives the rotating lever 43 to rotate in the opposite direction via the rotating shaft 22. The rotating lever 43 drives the inner friction ring 42 to return to its original position, and the central control screen 1 can continue to rotate. Among them, the inner ring surface of the inner friction ring 42 adopts a runway shape, which can enable the rotary lever 43 to accelerate the speed of retracting the push pin 432 when the rotary lever 43 rotates relative to the inner friction ring 42. The friction force between the push pin 432 and the inner friction ring 42 increases rapidly and nonlinearly under the rebound force of the return spring 433, thereby accelerating the braking of the central control screen 1.

[0050] When the central control screen 1 is stopped by the brake mechanism 4 due to excessive rotation speed, if the central control screen 1 is to continue to rotate, it needs to be rotated back a certain angle to unlock the brake mechanism 4. This operation requires learning cost and affects the convenience of rotating the central control screen 1. Figure 6 and Figure 7 As shown, the brake mechanism 4 of this embodiment further includes a rubber ring 45 and a limit ring 46. The rubber ring 45 is coaxially sleeved on the outer side of the outer friction ring 41 and contacts the outer ring surface of the outer friction ring 41. The rubber ring 45 is filled with a non-Newtonian fluid. Figure 5 As shown, the limiting ring 46 is arranged on the outside of the outer friction ring 41, and a plurality of groups of sliding grooves 461 are evenly opened on the limiting ring 46 along the circumferential direction, and each sliding groove 461 extends in the radial direction. Figure 5 and Figure 6 As shown, the outer friction ring 41 is composed of a number of brake friction pads 411 evenly arranged circumferentially. Each brake friction pad 411 corresponds to a set of slide grooves 461. The outer end surface of the brake friction pad 411 is provided with a slide pin 4111. The brake friction pad 411 is connected to the slide groove 461 via the slide pin 4111, so that the brake friction pad 411 can only move outward when impacted by the inner friction ring 42. When the rotation speed of the central control screen 1 exceeds the preset speed, the inner friction ring 42 is driven by the rotating lever 43 to accelerate the eccentric movement. The inner friction ring 42 impacts the brake friction pad 411, which moves outward rapidly and impacts the rubber ring 45. The non-Newtonian fluid solidifies due to the impact force, and the brake friction pad 411 stops the inner friction ring 42, thereby causing the rotating lever 43 to stop the central control screen 1. After the central control screen 1 is stopped by the brake mechanism 4 due to excessive rotation speed, the non-Newtonian fluid is no longer subjected to impact force and returns to a fluid state from a solidified state. Therefore, the squeezing force of the brake friction pad 411 on the inner friction ring 42 is reduced, thereby reducing the friction force of the brake friction pad 411 on the inner friction ring 42. When the user continues to apply force to slowly rotate the central control screen 1, the central control screen 1 drives the rotating lever 43 to rotate slowly via the rotating shaft 22. The inner friction ring 42 rotates eccentrically under the squeezing of the brake friction pad 411, the movement of the rotating lever 43, and the rebound force of the return spring 433. The rotation direction of the inner friction ring 42 is the same as that of the rotating lever 43, and the rotation speed is faster than that of the rotating lever 43 until the rotating lever 43 is once again on the long axis of the inner ring surface of the inner friction ring 42. Thereafter, the inner friction ring 42 and the rotating lever 43 rotate at the same speed and on the same axis, thereby unlocking the brake mechanism 4. In other words, the design of the rubber ring 45 injected with non-Newtonian fluid allows the central control screen 1 to be unlocked by slowly rotating the central control screen 1 without rotating it. At the same time, when the central control screen 1 rotates slowly, the inner friction ring 42 can be reset relative to the rotating lever 43 to achieve the next brake.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. Car multimedia terminal, including: Central control screen; It is characterized by further comprising: The rotating mechanism includes a base and a rotating shaft. The base is fixed to the center console of the car. The rotating shaft is rotatably connected to the base through a bearing. The center console screen is fixed to one end of the rotating shaft. The locking mechanism includes a turntable, a latch and a delayed unlocking assembly. The turntable is fixed to the rotating shaft and has multiple locking bayonets on the edge of the turntable. The delayed unlocking assembly can drive the latch to engage in or exit from the locking bayonets to lock the angle of the central control screen or unlock the central control screen so that it can rotate; When the user continuously applies force to the central control screen to adjust the angle of the central control screen, the delayed unlocking component drives the latch to slowly withdraw from the locking bayonet to delay unlocking the central control screen; The outer diameter of the bayonet is smaller than the diameter of the locking bayonet, so that the bayonet can swing left and right in the locking bayonet; The delayed unlocking components include: The locking cylinder is mounted on the base and can swing left and right. The locking cylinder is provided with a locking piston rod. The locking piston rod is connected to the bayonet pin and can extend or retract the locking cylinder. A swing rod, one end of which is connected to the locking cylinder and can swing with the locking cylinder, and the other end of which extends downward; There are two unlocking cylinders, which are symmetrically arranged on both sides of the swing arm and are respectively connected to the locking cylinder. Each unlocking cylinder is provided with an unlocking piston rod and a small hole drain valve. The unlocking piston rod is arranged toward the swing arm and can move left and right. The small hole drain valve is installed at the discharge port of the unlocking cylinder; When the central control screen is subjected to continuous rotational force, the lock cylinder is driven to swing via the turntable and the bayonet pin. As the swing arm swings with the lock cylinder, it contacts and squeezes the unlocking piston rod to move into the unlocking cylinder. The hydraulic oil in the unlocking cylinder is slowly pressed into the lock cylinder through the small hole drain valve, so that the lock piston rod drives the bayonet pin to slowly withdraw from the lock bayonet. The small hole drain valve is a one-way valve, and can flip toward the unlocking piston rod side when the hydraulic oil in the locking cylinder flows back to the unlocking cylinder, so as to speed up the speed at which the pin is engaged in the locking bayonet when the central control screen is rotated into place.

2. The automotive multimedia terminal according to claim 1, characterized in that: The bayonet is T-shaped, with the end with the larger outer diameter of the bayonet being in the locking bayonet socket, and the end with the smaller outer diameter being connected to the locking piston rod.

3. The automotive multimedia terminal according to claim 1, characterized in that: It also includes a brake mechanism, which is connected to the rotating shaft to stop the central control screen when the speed of the central control screen exceeds a preset speed.

4. The automotive multimedia terminal according to claim 3, characterized in that: The brake mechanism includes: An outer friction ring is mounted on the base and is coaxially arranged with the rotating shaft, and the inner ring surface of the outer friction ring serves as a braking friction surface; The inner friction ring is concentrically arranged inside the outer friction ring and can move eccentrically, and the inner and outer ring surfaces of the inner friction ring are both friction surfaces; A rotary lever is installed in the inner friction ring and fixedly connected to the rotating shaft. A push pin is provided at one end of the rotary lever. The push pin can move along the length direction of the rotary lever. The push pin contacts and squeezes the inner ring surface of the inner friction ring. The other end of the rotary lever is hingedly connected to the inner ring surface of the inner friction ring. When the rotation speed of the central control screen exceeds the preset speed, the rotary lever rotates in the inner friction ring and drives the inner friction ring to move eccentrically to one side of the outer friction ring. When the inner friction ring hits and squeezes the braking friction surface of the outer friction ring, the outer friction ring stops the inner friction ring, so that the rotary lever stops the central control screen.

5. The automotive multimedia terminal according to claim 4, characterized in that: The inner ring surface of the inner friction ring is in a racetrack shape. When the inner friction ring and the rotary lever are in an initial position, the rotary lever is located on the long axis of the inner ring surface.

6. The automotive multimedia terminal according to claim 4, characterized in that: The brake mechanism also includes: A rubber ring is coaxially sleeved on the outer side of the outer friction ring and contacts the outer ring surface of the outer friction ring. The rubber ring is filled with a non-Newtonian fluid. The limiting ring is arranged on the outer side of the outer friction ring, and a plurality of sliding grooves are evenly arranged on the limiting ring along the circumferential direction, and each sliding groove extends in the radial direction; The outer friction ring is composed of several brake friction pads evenly arranged in the circumference. Each brake friction pad corresponds to a set of slide grooves. The outer end surface of the brake friction pad is provided with a sliding pin, and the brake friction pad and the slide groove are connected by the sliding pin. When the brake friction pad is hit by the inner friction ring, it moves outward and hits the non-Newtonian fluid in the rubber ring, causing the non-Newtonian fluid to solidify under force and stop the central control screen; after the central control screen is stopped, the non-Newtonian fluid returns from a solidified state to a fluid state, and the brake mechanism is unlocked, allowing the user to continue to apply force to slowly rotate the central control screen.

Images