Multi-point touch screen

Abstract

The utility model discloses a multi-point touch screen which comprises a fixing frame, a fixing groove is formed in the fixing frame, a touch screen body is arranged in the fixing groove, a tempered screen film adheres to the front face of the touch screen body, a protective shell is installed on one side of the fixing frame through an installation mechanism, and oval grooves are formed in the four corners of the protective shell. Three mounting plates are fixedly connected into the fixing frame, and two moving notches are formed in one side of each of the upper mounting plate and the lower mounting plate. By arranging the mounting mechanism, a stud can be driven to rotate in a fixing frame by rotating a rotating block, a threaded sleeve ring is driven to move while the stud rotates, the threaded sleeve ring pushes two moving plates to move outwards through connecting rods on the two sides, and therefore a connecting column slides in an oval groove formed in a protective shell; the protective shell is clamped to one side of the fixing frame through the clamping block, the interior of the touch screen is convenient to maintain, the stability and durability of the touch screen are improved, the maintenance process is greatly simplified, and troubles caused by screw loss are reduced.

Description

Technical Field

[0001] This utility model relates to a multi-point touch screen, belonging to the field of touch screen technology. Background Technology

[0002] Multi-touch screens use two or more different contact points to touch the screen surface, perfectly enabling various multi-touch applications such as image zooming and rotation. They also possess all the functions and advantages of traditional single-point infrared touchscreens. Human-computer interaction research based on multi-touch technology focuses on self-capacitive touchscreens that recognize multi-touch gestures, detecting and distinguishing multi-touch actions such as zooming, dragging, and rotating. This is achieved using an axis-interlaced technology. It involves planning diamond-shaped sensing units on a conductive layer, requiring one conductive layer for each axis. Taking a two-axis type as an example, when detecting touch behavior, the sensing controller scans the horizontal and vertical axes separately. The resulting capacitively coupled horizontal and vertical sensing points will show rising peaks; the intersection of these two axes is the touch point.

[0003] However, in the existing technology, traditional multi-touch screen panels are usually fixed to the housing with adhesive or screws. Adhesive or screw fixing is inconvenient when maintenance is needed because there are no tools available, making it difficult to maintain the multi-touch screen. At the same time, the screws that are unscrewed are easy to lose, which has certain limitations. Therefore, there is an urgent need to design a multi-touch screen to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology and overcome the shortcomings mentioned in the background technology by designing a multi-touch screen.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A multi-touch screen includes a fixed frame with a fixed groove inside the frame. A touch screen body is disposed in the fixed groove. A tempered glass screen protector is adhered to the front of the touch screen body. A protective shell is mounted on one side of the fixed frame via an installation mechanism. Each of the four corners of the protective shell has an elliptical groove. Three mounting plates are fixedly connected inside the fixed frame. Two movable slots are opened on one side of the top and bottom mounting plates. A sliding groove is opened on one side of the middle mounting plate. Multiple protective components are disposed between the mounting plates and the touch screen body. The multiple protective components are evenly distributed on one side of the three mounting plates.

[0007] The installation mechanism includes a stud, which is rotatably connected inside the fixed frame. A threaded sleeve is threaded onto the outer ring of the stud, and guide components are provided on both sides of the threaded sleeve, with the two guide components arranged in opposite directions.

[0008] Preferably, the top of the stud penetrates the outer top wall of the fixing frame and is fixedly connected to a rotating block. A rubber sleeve is fixedly connected to the inner bottom of the fixing frame. The inner wall of the rubber sleeve is tightly fitted to the outer wall of the stud, and the rubber sleeve is made of polytetrafluoroethylene material.

[0009] Preferably, the guide assembly includes a connecting rod, which is hinged to the outer wall of the threaded sleeve ring. A movable plate is provided on the side of the connecting rod away from the threaded sleeve ring via a rotating shaft. Both ends of one side of the movable plate slide within a movable slot via sliders.

[0010] Preferably, the movable plate has connecting posts fixedly connected to both ends on the side away from the slider, and a snap-fit ​​block is fixedly connected to the side of the connecting post away from the movable plate. The connecting post slides in the elliptical groove opened in the protective shell, and the snap-fit ​​block is adapted to the size of the elliptical groove.

[0011] Preferably, a positioning block is fixedly connected to one side of the threaded sleeve, and the positioning block slides into the groove.

[0012] Preferably, the protective component includes two fixing blocks and two metal elastic sheets. The fixing blocks are fixed to one side of the mounting plate, and the metal elastic sheets are fixedly connected to the side of the fixing blocks away from the mounting plate. The two metal elastic sheets are arranged in opposite directions, and the metal elastic sheets abut against one side of the touch screen body.

[0013] Preferably, the protective shell has multiple heat dissipation vents on both sides.

[0014] The beneficial effects achieved by this utility model are:

[0015] By setting up an installation mechanism, rotating the rotating block can drive the stud to rotate inside the fixed frame. As the stud rotates, it drives the threaded sleeve to move, causing the threaded sleeve to push two moving plates outward through the connecting rods on both sides. This allows multiple connecting rods to slide in the elliptical grooves opened in the protective shell, and multiple locking blocks to lock the protective shell onto one side of the fixed frame for fixation. This facilitates maintenance of the touch screen's interior. This design not only improves the stability and durability of the touch screen but also greatly simplifies the maintenance process and reduces the trouble caused by lost screws. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of one embodiment of the present utility model;

[0017] Figure 2 for Figure 1 The diagram shows the internal structure of the fixed frame.

[0018] Figure 3 for Figure 1 The diagram shows a three-dimensional structure of the installation mechanism.

[0019] Figure 4 for Figure 3 A magnified structural diagram at point A.

[0020] Reference numerals: 1. Fixing frame; 2. Fixing groove; 3. Touch screen body; 4. Tempered glass screen protector; 5. Mounting mechanism; 51. Stud; 52. Screw ring; 53. Guide assembly; 531. Connecting rod; 532. Moving plate; 533. Connecting column; 534. Snap-fit ​​block; 54. Rotating block; 55. Rubber sleeve; 6. Protective shell; 7. Oval groove; 8. Mounting plate; 9. Moving slot; 10. Slide groove; 11. Protective assembly; 111. Fixing block; 112. Metal elastic sheet; 12. Positioning block; 13. Heat dissipation vent. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0022] Example 1

[0023] like Figure 1-4 As shown, the present invention proposes a multi-point touch screen, including a fixed frame 1, a fixed groove 2 inside the fixed frame 1, a touch screen body 3 inside the fixed groove 2, a tempered glass screen protector 4 bonded to the front of the touch screen body 3, a protective shell 6 mounted on one side of the fixed frame 1 via an installation mechanism 5, and elliptical grooves 7 at each of the four corners of the protective shell 6. Three mounting plates 8 are fixedly connected inside the fixed frame 1. Two movable slots 9 are opened on one side of the upper and lower mounting plates 8, and a sliding groove 10 is opened on one side of the middle mounting plate 8. Multiple protective components 11 are arranged between the mounting plates 8 and the touch screen body 3, and the multiple protective components 11 are evenly distributed on one side of the three mounting plates 8. The installation mechanism 5 includes a stud 51, which is rotatably connected inside the fixed frame 1. A threaded sleeve ring 52 is threaded onto the outer ring of the stud 51. Guide components 53 are arranged on both sides of the threaded sleeve ring 52, and the two guide components 53 are arranged in opposite directions.

[0024] In this embodiment, a fixing groove 2 is provided inside the fixing frame 1 to fix the position of the touch screen body 3. A tempered glass screen protector 4 is provided to further protect the touch screen body 3. A protective shell 6 is installed on one side of the fixing frame 1 through a mounting mechanism 5. The mounting mechanism 5 facilitates the removal of the protective shell 6 from the fixing frame 1, making it easier to maintain the body. Three mounting plates 8 are fixedly connected inside the fixing frame 1. The mounting plates 8 facilitate the installation of the mounting mechanism 5 and the protective components 11, improving the stability of the body. The rotation of the stud 51 can drive the screw ring 52 to move, so that the screw ring 52 drives the two guide components 53 for guidance. The protective shell 6 is installed on one side of the fixing frame 1 by changing the angle between the two guide components 53, which is simple to operate.

[0025] Example 2

[0026] like Figure 1-4 As shown, the multi-touch screen proposed in this utility model, compared with embodiment 1, further includes a stud 51 whose top penetrates the outer top wall of the fixed frame 1 and is fixedly connected to a rotating block 54. A rubber sleeve 55 is fixedly connected to the inner bottom of the fixed frame 1. The inner wall of the rubber sleeve 55 is tightly fitted to the outer wall of the stud 51, and the rubber sleeve 55 is made of polytetrafluoroethylene. The guide assembly 53 includes a connecting rod 531, which is hinged to the outer wall of the threaded sleeve ring 52. A movable plate 532 is provided on the side of the connecting rod 531 away from the threaded sleeve ring 52 via a rotating shaft. Both ends of one side of the movable plate 532 slide within the movable slot 9 via sliders. Both ends of the side of the movable plate 532 away from the sliders are fixedly connected to connecting posts 53. 3. A snap-fit ​​block 534 is fixedly connected to the side of the connecting column 533 away from the moving plate 532. The connecting column 533 slides in the elliptical groove 7 opened in the protective shell 6. The snap-fit ​​block 534 is adapted to the size of the elliptical groove 7. A positioning block 12 is fixedly connected to one side of the threaded sleeve ring 52. The positioning block 12 slides and engages with the sliding groove 10. The protective component 11 includes two fixing blocks 111 and two metal elastic pieces 112. The fixing blocks 111 are fixed to one side of the mounting plate 8. The metal elastic pieces 112 are fixedly connected to the side of the fixing blocks 111 away from the mounting plate 8. The two metal elastic pieces 112 are arranged in opposite directions. The metal elastic pieces 112 abut against one side of the touch screen body 3. Multiple heat dissipation vents 13 are opened on both sides of the protective shell 6.

[0027] In this embodiment, a rubber sleeve 55 is fixedly connected to the inner bottom of the fixed frame 1. The inner wall of the rubber sleeve 55 is tightly fitted to the outer wall of the stud 51. The rubber sleeve 55 is made of polytetrafluoroethylene. Relying on the friction between the rubber sleeve 55 and the stud 51, the stud 51 can maintain a certain fixed state after rotation. A positioning block 12 is fixedly connected to one side of the threaded sleeve ring 52. The positioning block 12 slides with the slide groove 10. By setting the slide groove 10 and the positioning block 12, the rotation of the threaded sleeve ring 52 can be restricted. When the stud 51 rotates, the threaded sleeve ring 52 can maintain horizontal movement on the outer wall of the stud 51, improving the operation accuracy. The protective component 11 includes two fixing blocks 111 and two metal elastic sheets 112. The fixing blocks 111 are fixed to one side of the mounting plate 8, and the metal elastic sheets 112 abut against one side of the touch screen body 3. The protective component 11 is set to increase the support force between the shell and the touch screen body 3, enhance a certain safety protection capability, and improve the service life of the body.

[0028] Working principle: When maintenance is required inside the multi-touch screen, rotating the rotating block 54 can drive the stud 51 to rotate inside the fixed frame 1. Simultaneously, the rotation of the stud 51 causes the threaded sleeve 52 to move upwards, allowing the positioning block 12 on one side of the threaded sleeve 52 to slide within the slide groove 10. This causes the bottom of the stud 51 to rotate within the rubber sleeve 55, thereby improving the stability of the threaded sleeve 52's movement. The threaded sleeve 52 then drives the connecting rods 531 on both sides to pull the two moving plates 532 inwards, causing multiple connecting posts 533 to slide within the elliptical grooves 7 of the protective shell 6. This aligns the positions of multiple locking blocks 534 with the elliptical grooves 7 of the protective shell 6, thus separating the protective shell 6 from the fixed frame 1. When installation is required, simply rotate the rotating block 54 to rotate the stud 51 in the opposite direction. This facilitates easy installation of the outer shell, making maintenance of the touchscreen's interior easier and reducing the operational difficulty for staff.

[0029] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A multi-touch screen comprising a fixed frame (1), characterized in that: The fixed frame (1) has a fixed groove (2) inside, and the fixed groove (2) is provided with a touch screen body (3). The front of the touch screen body (3) is bonded with a tempered screen film (4). A protective shell (6) is installed on one side of the fixed frame (1) through an installation mechanism (5). An elliptical groove (7) is provided at each of the four corners of the protective shell (6). Three mounting plates (8) are fixedly connected inside the fixed frame (1). Two movable slots (9) are provided on one side of the upper and lower mounting plates (8). A sliding groove (10) is provided on one side of the middle mounting plate (8). Multiple protective components (11) are provided between the mounting plate (8) and the touch screen body (3). The multiple protective components (11) are evenly distributed on one side of the three mounting plates (8). The installation mechanism (5) includes a stud (51), which is rotatably connected inside the fixed frame (1). The stud (51) is threaded with a threaded sleeve ring (52) on its outer ring. Guide components (53) are provided on both sides of the threaded sleeve ring (52), and the two guide components (53) are arranged in opposite directions.

2. A multipoint touch screen according to claim 1, wherein, The top of the stud (51) penetrates the outer top wall of the fixed frame (1) and is fixedly connected to a rotating block (54). A rubber sleeve (55) is fixedly connected to the inner bottom of the fixed frame (1). The inner wall of the rubber sleeve (55) is tightly fitted to the outer wall of the stud (51), and the rubber sleeve (55) is made of polytetrafluoroethylene material.

3. The multipoint touch screen of claim 1, wherein, The guide assembly (53) includes a connecting rod (531), which is hinged to the outer wall of the threaded sleeve (52). A movable plate (532) is provided on the side of the connecting rod (531) away from the threaded sleeve (52) via a rotating shaft. Both ends of the movable plate (532) slide within the movable slot (9) via sliders.

4. A multipoint touch screen according to claim 3, wherein, The movable plate (532) is fixedly connected to two ends of the side away from the slider. The connecting column (533) is fixedly connected to a snap-fit ​​block (534) on the side away from the movable plate (532). The connecting column (533) slides in the elliptical groove (7) opened in the protective shell (6). The snap-fit ​​block (534) is adapted to the size of the elliptical groove (7).

5. The multipoint touch screen of claim 1, wherein, A positioning block (12) is fixedly connected to one side of the threaded sleeve (52), and the positioning block (12) slides in conjunction with the slide groove (10).

6. The multipoint touch screen of claim 1, wherein, The protective component (11) includes two fixing blocks (111) and two metal elastic sheets (112). The fixing blocks (111) are fixed to one side of the mounting plate (8). The metal elastic sheets (112) are fixedly connected to the side of the fixing blocks (111) away from the mounting plate (8). The two metal elastic sheets (112) are arranged in opposite directions and abut against one side of the touch screen body (3).

7. The multipoint touch screen of claim 1, wherein Multiple heat dissipation vents (13) are provided on both sides of the protective shell (6).

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