CN207875538U - A kind of vehicular display screen - Google Patents

Abstract

The utility model discloses a vehicle-mounted display screen, which comprises a placement frame, a display screen, and a hand-operated lifting device for driving the display screen to go up and down. wheel, the top of the scissor-type link frame is connected with the display screen, and the bottom of the scissor-type link frame is fixed on the placement frame; the screw drive assembly includes two nuts and a trapezoidal screw, two of which The nut is connected with the trapezoidal thread at both ends of the screw, and both nuts are arranged on the scissor-type link frame; when the hand wheel drives the screw to rotate, the two nuts are driven to move relatively, and the driven scissor-type link frame is driven Lift and lower, so as to drive the display to go up and down, and the handwheel is used as power to complete the lifting function of the display. Compared with the electric folding display, the manual lifting mechanism is more stable, safe and has a lower failure rate.

Description

A vehicle-mounted display

technical field

The utility model relates to the field of display screens, in particular to a vehicle-mounted display screen.

Background technique

As a mobile occasion, the display screen is used as a text and graphic warning tool for traffic guidance. At present, the display screens on the market are mainly divided into two types, one is a fixed display screen, and the other is an electric folding display screen. The display screen is fixedly installed, and the display screen does not have a lifting function. When it is fixedly installed on the car, it is necessary to consider not only the display distance, the display blind area, but also the firmness and wind resistance increase caused by the installation too high. High wind resistance will bring unsafe factors such as large wind resistance; Among them, the electric folding display uses a motor as power, and the screw drives the push rod to fold and lift the display. Although the electric folding display solves the problem of wind resistance, it is an electromechanical product and there will be At critical moments (such as high-speed accident handling and other emergencies), the probability of lifting and falling out of control, due to structural limitations, the electric folding display cannot be produced with a display with an excessively large display area.

Utility model content

In view of the deficiencies in the prior art, the purpose of the utility model is to provide a vehicle-mounted display screen, which has the characteristics of high safety and low failure rate.

In order to achieve the above object, the utility model provides the following technical solutions:

A vehicle-mounted display screen, which is characterized in that it includes a placement frame, a display screen, and a hand-operated lifting device that drives the display screen to rise and fall, and the hand-operated lifting device includes a scissor-type linkage frame, a screw drive assembly, and a hand wheel , the top of the scissor-type link frame is connected with the display screen, and the bottom of the scissor-type link frame is fixed on the placement frame; the screw transmission assembly includes two nuts and a screw rod, wherein the two nuts are connected to the The two ends of the screw are threaded, and the two nuts are arranged on the scissor link frame; when the handwheel drives the screw to rotate, the two nuts are driven to move relatively, and the driven scissor link frame is driven to lift, Thereby driving the display screen to go up and down.

The utility model further provides that: the hand-operated lifting device further includes a linkage rod, and the two ends of the linkage rod are universally connected with the hand wheel and the screw respectively.

The utility model further sets: slide rails are provided on both sides of the display screen, and the placement frame is provided with wheel sliders matched with the slide rails.

The utility model has beneficial effects: the handwheel drives the scissor-type connecting rod frame to lift through the screw drive assembly; thereby drives the display screen to lift, and the hand wheel is used as power to complete the lifting function of the display screen, and the hand lift mechanism is relatively Compared with the electric folding display screen, it is more stable, safe and has a low failure rate. There will be no problems such as circuit failure due to waterproofing in rainy days. It can effectively guarantee timely warning signals at critical moments (effective signals at critical moments on high speeds can save lives) , and can produce different display sizes according to vehicle models, and can produce larger display sizes than electric folding displays.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of a vehicle-mounted display screen of the present invention;

Fig. 2 is the structural representation of hand type lifting device;

Fig. 3 is an enlarged view of part A in Fig. 1 .

Explanation of reference signs: 1. Placement frame; 2. Display screen; 3. Hand-operated lifting device; 31. Scissor-type linkage frame; 32. Screw transmission assembly; 321. Nut; 322. Screw; 33. Hand wheel ; 34, linkage rod; 4, wheel slider; 5, slide rail.

Detailed ways

An embodiment of a vehicle-mounted display screen of the present invention will be further described in detail with reference to accompanying drawings 1 to 3 .

A vehicle-mounted display screen, including a placement frame 1, a display screen 2, and a hand-operated lifting device 3 that drives the display screen 2 to rise and fall. And handwheel 33, the top of described scissors type linkage frame 31 is connected with display screen 2, and the bottom of described scissors type linkage frame 31 is fixed on the placement frame 1; Described handwheel 33 passes screw rod transmission assembly 32 drives the scissor-type link frame 31 to lift; thereby drives the display screen 2 to lift, and the handwheel 33 is used as power to complete the lifting function of the display screen 2. The manual lifting mechanism is more stable than the electric folding display screen 2. It is safe and has a low failure rate, and there will be no problems such as circuit failure due to waterproofing in rainy days. It can effectively guarantee timely warning signals at critical moments (effective signals at critical moments on high speeds can save lives), and different models can be produced according to models. The display size can be made larger than the electric folding display 2.

The screw drive assembly 32 includes two nuts 321 and a screw 322, wherein the two nuts 321 are threadedly connected to the two ends of the screw 322, and the two nuts 321 are arranged on the scissor link frame 31; the hand wheel 33 When the screw rod 322 is driven to rotate, the two nuts 321 are driven to move relative to each other, and the scissor-type link frame 31 is driven to lift, so that the display screen 2 can stop at any position during the lifting process and does not move, and also improves the display screen 2 simultaneously. More stable and reliable in the lifting process, both sides of the display screen 2 are provided with slide rails 5, and the placement frame 1 is provided with wheel sliders 4 matched with the slide rails, which play a guiding role in the lifting of the display screen 2 , to reduce the lifting resistance of the display screen 2.

In order to make the transmission of the screw transmission assembly 32 more stable and reliable, its nut 321 is a trapezoidal copper nut.

The hand-operated lifting device 3 also includes a linkage rod 34, and the two ends of the linkage rod 34 are universally connected with the handwheel 33 and the screw rod 322 respectively. This structure facilitates the rotation of the handwheel 33 and prevents the handwheel 33 from Interference occurs with the placement frame 1 during the rotation.

The above descriptions are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model all belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims (3)

1. A vehicle-mounted display screen, characterized in that it includes a placement frame, a display screen, and a hand-operated lifting device that drives the display screen to go up and down, and the hand-operated lifting device includes a scissor-type linkage frame, a screw drive assembly and hand wheel, The top of the scissor link frame is connected to the display screen, and the bottom of the scissor link frame is fixed on the placement frame; The screw drive assembly includes two nuts and a screw, wherein the two nuts are threadedly connected to both ends of the screw, and both nuts are arranged on the scissor link frame; When the hand wheel drives the screw to rotate, it drives the two nuts to move relative to each other, and the driven scissor link frame is driven to lift, thereby driving the display screen to lift. 2 . The vehicle-mounted display screen according to claim 1 , wherein the manual lifting device further includes a linkage rod, and the two ends of the linkage rod are universally connected with the hand wheel and the screw respectively. 3 . 3. The vehicle-mounted display screen according to claim 1, characterized in that: slide rails are provided on both sides of the display screen, and wheel sliders matching the slide rails are provided on the placement frame.