Vehicle-mounted projection screen mounting device and mounting method

Abstract

The invention discloses a vehicle-mounted projection screen installation device and method, and belongs to the field of vehicle-mounted projection. A vehicle-mounted projection screen mounting device comprises a sleeve, a pressing plate, a connecting rod, an upper cover, a locking ball, a locking spring, a gasket, a supporting spring, a pressure spring, a pressing ball and a locking shifting piece. The upper cover is connected with the upper end face of the sleeve, the pressing plate is movably connected with the upper cover, the connecting rod penetrates through the sleeve from the middle of the upper cover and can slide in an inner cavity of the sleeve, an end cover is formed at the upper end of the connecting rod, a containing cavity is formed in the lower end of the connecting rod, and a compression spring and a pressing ball are arranged in the containing cavity. And the locking shifting piece is movably connected to the lower end part of the connecting rod and is opened / closed along the accommodating cavity. According to the installation device, the projection screen can be rapidly installed on the vehicle frame, the installation device is not loosened through triple interlocking of the device, and long-term stability of the projection screen on the vehicle is guaranteed. The installation method is simple, rapid and stable.

Description

[0001] This application relates to the field of in-vehicle projection, and particularly to an in-vehicle projection screen installation device and an installation method. Background Art

[0002] With the development of information technology, the automobile is no longer limited to a means of transportation, but a mobile terminal integrating various life functions and entertainment functions. The functions of the in-vehicle system are continuously enriched, and in-vehicle projection emerges as the times require.

[0003] However, components such as the vehicle and the projection screen are often produced by different manufacturers, and there are manufacturing deviations in size specifications. As a result, when the projection screen is assembled to the vehicle frame subsequently, it often encounters problems of difficult installation and matching, which affects the production of the whole vehicle or the replacement and installation of different projection screens. Therefore, there is an urgent need for a device that can make the projection screen match the vehicle arbitrarily, so as to realize the simple, fast and stable installation of the projection screen on the vehicle frame. Summary of the Invention

[0004] The purpose of this application is to provide an in-vehicle projection screen installation device, which can realize the rapid installation of the in-vehicle projection screen on the vehicle frame, and the installation device is not loosened through triple interlock of the device, ensuring the long-term stability of the in-vehicle projection screen on the vehicle. In addition, this application also provides an installation method that can simply, quickly and stably install the in-vehicle projection screen on the vehicle.

[0005] The technical solutions provided by this application are as follows:

[0006] An in-vehicle projection screen installation device, comprising:

[0007] A sleeve, a pressing plate, a connecting rod, an upper cover, a locking ball, a locking spring, a gasket, a supporting spring, a compression spring, a pressing ball and a locking dial;

[0008] The upper cover is connected to the upper end surface of the sleeve, the pressing plate is movably connected to the upper cover, and the pressing plate can rotate;

[0009] The connecting rod passes through the sleeve from the middle of the upper cover and is slidable in the inner cavity of the sleeve;

[0010] An end cover is formed at the upper end of the connecting rod, a receiving cavity is provided at the lower end, the compression spring and the pressing ball are arranged in the receiving cavity, the locking dial is movably connected to the lower end of the connecting rod, and the locking dial opens / closes along the receiving cavity;

[0011] The locking spring, the support spring and the gasket are all located inside the sleeve and nested on the connecting rod. One end of the locking spring contacts the upper cover, and the other end contacts the gasket. One end of the support spring contacts the end cover of the connecting rod, and the other end contacts the gasket. The locking ball is arranged in the space formed by the lower part of the sleeve, the connecting rod and the gasket. A groove is provided on the connecting rod. In the locked state, all or part of the locking ball is nested in the groove to prevent the connecting rod from sliding in the inner cavity of the sleeve.

[0012] The installation device of the present application includes a sleeve, a pressure plate, a connecting rod, an upper cover, a locking ball, a locking spring, a gasket, a support spring, a compression spring, a compression ball and a locking dial. The installation device has two states: locked and unlocked. In the unlocked state of the installation device, the connecting rod can slide inside the sleeve, thereby driving the compression ball in the accommodating cavity to slide towards the lower end of the connecting rod on the locking dial at the lower end of the connecting rod. Since the locking dial is movably connected to the lower end of the connecting rod, the sliding of the compression ball will drive the locking dial to open. When the installation device is installed, restricted by the external pressure, the locking dial will drive the compression ball to slide away from the lower end of the connecting rod, and the locking dial changes from the open state to the closed state. After the installation device is installed, no longer restricted by the external pressure, the elastic force of the compression spring drives the compression ball to slide towards the lower end of the connecting rod on the locking dial, and the locking dial opens and gets stuck again. At this time, the locking spring transmits pressure to the locking ball through the gasket, and the locking ball slides into the groove of the connecting rod, thereby preventing the connecting rod from sliding inside the sleeve. Then rotate the pressure plate to press the end cover of the connecting rod, and the installation device is completely locked.

[0013] In one embodiment, a threaded hole is provided on the upper end surface of the sleeve, and the upper cover is connected to the threaded hole by a screw.

[0014] In one embodiment, the sleeve is in the shape of a cylinder or a prism.

[0015] In one embodiment, the pressure plate is movably connected to the upper cover by a screw or a pin.

[0016] In the embodiment of the present application, the pressure plate is movably connected to the upper cover by a screw or a pin, ensuring that the pressure plate can rotate, thereby pressing the connecting rod to keep the installation device locked, or moving away from the connecting rod to release the locked state of the installation device.

[0017] In one embodiment, the end cover is integrally formed or connected to the upper end of the connecting rod by a screw, and the connecting rod is in the shape of a cylinder or a prism.

[0018] In one embodiment, the lower part of the inner cavity of the sleeve is provided with an inclined wall, and the locking ball slides into or out of the groove through the inclined wall.

[0019] In an embodiment of the present application, the lower part of the inner cavity of the sleeve is provided with an inclined wall, which is more convenient for the locking ball to slide along the inclined wall and enter the groove on the connecting rod.

[0020] In one embodiment, the locking flap is movably connected to the lower end of the connecting rod by a screw or a pin, and the locking flap forms a V-shaped cavity along the opening / closing of the accommodating cavity.

[0021] In an embodiment of the present application, the opening of the locking flap is required for the locking of the installation device, and the closing of the locking flap is required when the installation device is inserted into the installation hole. Therefore, the locking flap should be movably connected, and the locking flap is arranged to form a V-shaped cavity along the opening / closing of the accommodating cavity, and the pressing ball slides under force in the V-shaped cavity, so that it is easier to control the opening / closing of the locking flap.

[0022] An installation method for a vehicle-mounted projection screen, comprising:

[0023] S01. Open a frame installation hole on the vehicle frame, open a vehicle-mounted projection screen installation hole on the vehicle-mounted projection screen, align the frame installation hole and the vehicle-mounted projection screen installation hole, and pass the installation device according to any one of claims 1 to 8 through them;

[0024] S02. Press down the end cover, rotate the pressing plate to press the end cover, and lock the vehicle-mounted projection screen on the vehicle frame to complete the installation.

[0025] In an embodiment of the present application, when the installation device is inserted into the aligned frame installation hole and vehicle-mounted projection screen installation hole, the locking flap is driven by external pressure and the hole to drive the pressing ball to slide away from the lower end of the connecting rod, and the locking flap changes from the open state to the closed state; when the installation device is completely inserted into it, the locking flap is no longer restricted by external pressure and the hole, and the elastic force of the compression spring drives the pressing ball to slide on the locking flap towards the lower end of the connecting rod, and the locking flap opens again and is stuck outside the aligned frame installation hole and vehicle-mounted projection screen installation hole. At this time, the locking spring transmits pressure to the locking ball through the gasket, and the locking ball slides into the groove of the connecting rod, thereby preventing the connecting rod from sliding in the sleeve. Then rotate the pressing plate to press the end cover of the connecting rod, and the installation device is completely locked. At this time, the projection screen is installed and fixed on the vehicle frame. The installation device of the present application can realize the rapid installation of the projection screen on the vehicle frame, and through the triple limit and interlock of the locking flap, the locking ball and the pressing plate, the installation device is not loosened, ensuring the long-term stability of the projection screen on the vehicle.

[0026] In an embodiment of the present application, only need to insert the installation device into the aligned vehicle-mounted projection screen installation hole and frame installation hole, and rotate the pressing plate to press the end cover of the connecting rod to install and fix the vehicle-mounted projection screen on the vehicle. The installation method of the present application has the advantages of simplicity, rapidity and stability.

[0027] In one embodiment, before step S01, it further includes assembling the installation device:

[0028] Prepare each component; nest the locking spring, support spring, and gasket on the connecting rod; press the gasket and insert part of the connecting rod into the sleeve, leaving a gap between the gasket and the upper end of the sleeve; place the locking ball above the sleeve, and the locking ball enters the sleeve through the gap; cover the upper cover of the sleeve, install the pressure plate on the upper cover, install the compression spring and pressure ball into the accommodating cavity, and install the locking dial on the lower end of the connecting rod to complete the assembly. Description of the Drawings

[0029] Figure 1 It is a sectional view showing the composition of the in-vehicle projection screen installation device;

[0030] Figure 2 It is a schematic diagram of the shape of the sleeve;

[0031] Figure 3 It is a schematic diagram of the shape of the connecting rod;

[0032] Figure 4 It is a sectional view showing the unlocked state of the installation device;

[0033] Figure 5 It is a sectional view showing the installation device locked on the installation plate;

[0034] Figure 6 It is a sectional view showing the installation device, in-vehicle projection screen and vehicle frame installed and fixed;

[0035] Among them, the meanings of the reference numerals in the drawings are as follows:

[0036] 1 - Installation device; 2 - Vehicle frame; 3 - In-vehicle projection screen; 4 - In-vehicle projection screen installation hole; 5 - Vehicle frame installation hole; 6 - Installation plate; 7 - Installation plate installation hole; 10 - Sleeve; 101 - Threaded hole; 102 - Screw; 20 - Pressure plate; 30 - Connecting rod; 301 - End cover; 302 - Accommodating cavity; 3021 - Compression spring; 3022 - Pressure ball; 303 - Groove; 40 - Upper cover; 50 - Locking ball; 60 - Locking spring; 70 - Gasket; 80 - Support spring; 90 - Locking dial. Detailed Embodiments

[0037] The terms used in the embodiments of this application are only for explaining the specific embodiments of this application, and are not intended to limit this application. The "upper and lower" markings in the drawings are for facilitating the explanation of the installation device in the drawings of the specific embodiments of this application, and are not intended to limit this application.

[0038] Embodiment 1

[0039] Figure 1 It is a sectional view showing the composition of the in-vehicle projection screen installation device;Figure 2 Schematic diagram of the sleeve shape Figure 3 Schematic diagram of the connecting rod shape

[0040] As Figure 1 As shown, an installation device 1 for a vehicle-mounted projection screen includes: a sleeve 10, a pressing plate 20, a connecting rod 30, an upper cover 40, a locking ball 50, a locking spring 60, a gasket 70, a supporting spring 80, a compression spring 3021, a pressing ball 3022 and a locking dial 90; the upper cover 40 is connected to the upper end face of the sleeve 10, the pressing plate 20 is movably connected to the upper cover 40, and the pressing plate 20 can rotate, so that the pressing plate 20 can rotate to press the connecting rod 30 or rotate away from the connecting rod 30, thereby limiting the connecting rod 30.

[0041] Furthermore, as Figure 1 shown, the connecting rod 30 passes through the middle of the upper cover 40 and through the sleeve 10 and can slide in the inner cavity of the sleeve 10. An end cover 301 is formed at the upper end of the connecting rod 30, and a receiving cavity 302 is provided at the lower end. A compression spring 3021 and a pressing ball 3022 are arranged in the receiving cavity 302. The locking dial 90 is movably connected to the lower end of the connecting rod 30, and the locking dial 90 can open or close along the receiving cavity 302.

[0042] For further explanation, an opening is provided in the middle of the upper cover 40. The size of the end cover 301 is larger than the rod size of the connecting rod 30, and the size of the end cover 301 is slightly smaller than the opening in the upper cover 40, so that the connecting rod 30 and the end cover 301 can both freely pass through the opening in the middle of the upper cover 40.

[0043] For further explanation, as Figure 3 shown, the receiving cavity 302 at the lower end of the connecting rod 30 is opened along the up and down direction of the connecting rod 30, and can be opened through or not opened through in the direction perpendicular to the up and down direction of the connecting rod 30.

[0044] For further explanation, as Figure 1As shown, the lower end of the locking paddle 90 can be set to an arc structure, so that the locking paddle 90 itself has a force in the closing direction, making the locking paddle 90 more inclined to close. When the installation device 1 is installed, the locking paddle 90 is restricted by external pressure and will drive the pressure ball 3022 to slide away from the lower end of the connecting rod 30, and the locking paddle 90 changes from the open state to the closed state; after the installation device 1 is installed, the locking paddle 90 is no longer restricted by external pressure, and the elastic force of the compression spring 3021 drives the pressure ball 3022 to slide on the locking paddle 90 towards the lower end of the connecting rod 30, and the locking paddle 90 opens and locks again. At this time, the locking spring 60 transmits pressure to the locking ball 50 through the gasket 70, and the locking ball 50 slides into the groove 303 of the connecting rod 30, thereby preventing the connecting rod 30 from sliding in the sleeve 10, and then rotating the pressure plate 20 to press the end cover 301 of the connecting rod 30, and the installation device is completely locked. Of course, a resistance spring can also be provided on the connecting shaft where the locking paddle 90 is movably connected to the lower end of the connecting rod 30, and the resistance spring provides a force for the locking paddle 90 to tend to close; the locking paddle 90 can also be designed into other shapes or other devices providing resistance, as long as the purpose is to make the locking paddle 90 itself tend to close, it belongs to the scope of protection of this solution, and no examples will be given one by one here.

[0045] Further, the locking spring 60, the support spring 80 and the gasket 70 are located in the sleeve 10 and nested on the connecting rod 30. One end of the locking spring 60 contacts the upper cover 40, and the other end contacts the gasket 70. One end of the support spring 80 contacts the end cover 301 of the connecting rod 30, and the other end contacts the gasket 70; the locking ball 50 is arranged in the space surrounded by the lower part of the sleeve 10, the connecting rod 30 and the gasket 70. A groove 303 is provided on the rod part of the connecting rod 30. In the locked state, the locking ball 50 is wholly or partly nested in the groove 303 to prevent the connecting rod 30 from sliding in the inner cavity of the sleeve 10.

[0046] For further explanation, the locking spring 60 drives the locking ball 50 to move downward in the inner cavity of the sleeve 10 by squeezing the gasket 70. After the connecting rod 30 is pressed down, the locking spring 60 squeezes the locking ball 50 through the gasket 70, and the locking ball 50 slides into the groove 303 on the rod part of the connecting rod 30. When the locking ball 50 is wholly or partly nested in the groove 303, the connecting rod 30 can be prevented from sliding up and down in the inner cavity of the sleeve 10, thereby further limiting the connecting rod 30.

[0047] For further explanation, the size of the support spring 80 is smaller than that of the locking spring 60, and it is used to support the end cover 301 of the connecting rod 30, so that the connecting rod 30 can slide upward from the inner cavity of the sleeve 10 without being limited by the locking ball 50, the pressure plate 20 or the locking paddle 90.

[0048] Further, as Figure 2As shown, a threaded hole 101 is provided on the upper end face of the sleeve 10, and the upper cover 40 is connected to the threaded hole 101 by a screw.

[0049] Further, as shown in Figure 2 Figure a, the shape of the sleeve 10 is a cylinder; as shown in Figure 2 Figure b, the shape of the sleeve 10 is a quadrangular prism; of course, the shape of the sleeve 10 can also be a triangular prism, a pentagonal prism or other polygonal prisms, and no further examples will be given here.

[0050] Further, the pressing plate 20 is movably connected to the upper cover 40 by a screw or a pin.

[0051] For further explanation, the pressing plate 20 is movably connected to the upper cover 40 by a screw or a pin, ensuring that the pressing plate can rotate, thereby pressing the connecting rod 30 to keep the installation device 1 locked, or moving away from the connecting rod 30 to release the locked state of the installation device 1.

[0052] Further, as shown in Figure 3 Figure a, the end cover 301 of the connecting rod 30 is integrally formed with the rod portion of the connecting rod; as shown in Figure 3 Figure b, the end cover 301 of the connecting rod 30 is connected to the upper end portion of the connecting rod 30 by a screw 102; as shown in Figure 3 the connecting rod 30 can be a cylinder or a quadrangular prism, and of course, the shape of the connecting rod 30 can also be a triangular prism, a pentagonal prism or other polygonal prisms, and no further examples will be given here.

[0053] Further, as shown in Figure 1 the lower part of the inner cavity of the sleeve 10 is provided with an inclined wall, and the locking ball 50 slides into or out of the groove 303 through the inclined wall.

[0054] For further explanation, the lower part of the inner cavity of the sleeve 10 is provided with an inclined wall, which is more convenient for the locking ball 50 to slide along the inclined wall and enter the groove 303 on the connecting rod 30.

[0055] Further, the locking ball can be one, two, three or more, and the groove 303 on the rod portion of the connecting rod 30 can be opened through along the circumference of the rod portion or spaced apart on the rod portion, which can be changed according to use, and no further examples will be given here.

[0056] Further, the locking flap 90 can be two, or three, four or more, which can be changed according to the application, and no further examples will be given here.

[0057] Further, the locking flap 90 is movably connected to the lower end portion of the connecting rod 30 by a screw or a pin, and the locking flap 90 opens and closes along the accommodating cavity 302 to form a V-shaped cavity.

[0058] For further explanation, the locking paddle 90 is opened when the locking of the mounting device 1 is required, and the locking paddle 90 is closed when the mounting device 1 is inserted into the frame mounting hole 5. Therefore, the locking paddle 90 should be movably connected and rotatable. The locking paddle 90 is arranged to open / close along the accommodating cavity to form a V-shaped cavity, and the pressing ball 3022 slides under the force in the V-shaped cavity, which makes it easier to control the opening / closing of the locking paddle 90.

[0059] Furthermore, Figure 4 This is a sectional view schematic diagram of the mounting device in the unlocked state. When the mounting device 1 is unlocked, the pressing plate 20 rotates to the end cover 301 away from the connecting rod 30. The connecting rod 30 and the end cover 301 extend out of the sleeve 10 from the upper cover 40 under the support of the support spring 80. The locking ball 50 is pressed by the gasket 70 at the lower part of the sleeve 10 and does not enter the groove 303 on the rod part of the connecting rod 30. At this time, the connecting rod 30 is in a movable state. The locking paddle 90 at the lower end of the connecting rod 30 tends to close at this time. Under the combined action of the compression spring 3021 and the pressing ball 3022 in the accommodating cavity, the balance of each force is maintained.

[0060] Furthermore, Figure 5 This is a sectional view schematic diagram of the mounting device locked on the mounting plate. The mounting plate 6 is provided with a mounting plate mounting hole 7. When the mounting device 1 is locked on the mounting plate 6, when the mounting device 1 is locked, the pressing plate 20 rotates to press the end cover 301 of the connecting rod 30, and the connecting rod 30 and the end cover 301 are pressed into and penetrate the sleeve 10. The locking ball 50 is pressed by the locking spring 60 and the gasket 70 and partially slides into the groove 303 on the rod part of the connecting rod 30. At this time, the connecting rod 30 is limited by the pressing plate and the locking ball 50 and cannot slide in the inner cavity of the sleeve 10. The locking paddle 90 at the lower end of the connecting rod 30 passes through the mounting plate mounting hole 7, opens under the combined action of the compression spring 3021 and the pressing ball 3022 in the accommodating cavity, and due to the greater force of the locking paddle 90 itself to prevent further opening, it tends to close more, so that the locking paddle 90 is clamped on the mounting plate 6 provided with the mounting plate mounting hole 7. At this time, the mounting device 1 is limited by the locking paddle 90, the locking ball 50 and the pressing block 20, so that the mounting device 1 tightly mounts and fixes the vehicle-mounted projection screen 3 on the frame 2, and can also be stable and not loose during the movement of the vehicle.

[0061] In summary, the installation device 1 of the present application includes a sleeve 10, a pressing plate 20, a connecting rod 30, an upper cover 40, a locking ball 50, a locking spring 60, a gasket 70, a support spring 80, a compression spring 3021, a pressing ball 3022, and a locking dial 90. The installation device 1 has two states: locked and unlocked. In the unlocked state of the installation device 1, the connecting rod 30 can slide within the sleeve 10, thereby driving the pressing ball 3022 within the accommodating cavity 302 to slide towards the lower end of the connecting rod 30 on the locking dial 90. Since the locking dial 90 is movably connected to the lower end of the connecting rod 30, the sliding of the pressing ball 3022 will drive the locking dial 90 to open. When the installation device 1 is inserted into the mounting hole 7 of the mounting plate 6 provided on the mounting plate 6, the locking dial 90 is restricted by the external pressure and the mounting hole 7 of the mounting plate, and will drive the pressing ball 3022 to slide away from the lower end of the connecting rod 30. The locking dial 90 changes from the open state to the closed state. When the installation device 1 is completely inserted into the mounting hole 7 of the mounting plate, the locking dial 90 is no longer restricted by the external pressure and the mounting hole 7 of the mounting plate. The elastic force of the compression spring 3021 drives the pressing ball 3022 to slide towards the lower end of the connecting rod 30 on the locking dial 90, and the locking dial 90 opens again and gets stuck outside the mounting hole 7 of the mounting plate. At this time, the locking spring 60 transmits pressure to the locking ball 50 through the gasket 70, and the locking ball 50 slides into the groove 303 of the connecting rod 30, thereby preventing the connecting rod 30 from sliding within the sleeve 10. Then, the pressing plate 20 is rotated to press against the end cover 301 of the connecting rod, and the installation device 1 is completely locked. At this time, the vehicle-mounted projection screen 3 is installed and fixed to the mounting plate 6. The installation device of the present application realizes the rapid installation of the vehicle-mounted projection screen. Through the triple limit and interlock of the locking dial 90, the locking ball 50, and the pressing plate 20, the installation device 1 is not loosened, thereby ensuring the long-term stability of the vehicle-mounted projection screen.

[0062] Embodiment 2

[0063] Based on Embodiment 1, the present embodiment discloses an installation method for a vehicle-mounted projection screen, including:

[0064] S01. A frame mounting hole 5 is provided on the frame 2, a vehicle-mounted projection screen mounting hole 4 is provided on the vehicle-mounted projection screen 3, the frame mounting hole 5 and the vehicle-mounted projection screen mounting hole 4 are aligned, and the aforementioned installation device 1 is passed through them;

[0065] S02. Press down the end cover 301, rotate the pressing plate 20 to press against the end cover 301, and the vehicle-mounted projection screen 3 is locked to the frame 2 to complete the installation.

[0066] Align the frame mounting hole 5 with the vehicle-mounted projection screen mounting hole 4, insert the installation device 1 into them. The locking flap 90 will be further inclined to close under the external force transmitted by the hole edge. At this time, the pressure ball 3022 moves upward in the accommodation cavity 302 and compresses the compression spring 3021. The pressure ball 3022 moves away from the locking flap 90, and the locking flap 90 can be closed. After the installation device 1 is inserted into them, the locking flap 90 completely passes through the frame mounting hole 5 and the vehicle-mounted projection screen mounting hole 4. At this time, the locking flap 90 no longer receives the external force transmitted by the hole edge to make it close, and the compression spring 3021 in the accommodation cavity 302 will support the pressure ball 3022 to move downward along the accommodation cavity 302. At the same time, the pressure ball 3022 presses against the locking flap 90. At this time, the compression spring 3021 is compressed greatly, and the force provided to the pressure ball 3022 is also large. The force transmitted by the pressure ball 3022 to make the locking flap 90 open will also be greater than the force of the locking flap 90 itself in the closing direction, thereby driving the locking flap 90 to open. However, after the locking flap 90 opens and clamps outside the vehicle-mounted projection screen mounting hole 4 and the frame mounting hole 5, as the compression spring 3021 elongates, the force provided by the compression spring 3021 to the pressure ball 3022 will gradually decrease. The force transmitted by the pressure ball 3022 to make the locking flap 90 open will be less than the force of the locking flap 90 itself in the closing direction. Thus, the locking flap 90 is more inclined to close, so that the locking flap 90 clamps outside the vehicle-mounted projection screen mounting hole 4 and the frame mounting hole 5, and the installation device 1 installs and fixes the vehicle-mounted projection screen.

[0067] For further explanation, only need to align the vehicle-mounted projection screen mounting hole 4 with the frame mounting hole 5, insert the installation device 1 into them, rotate the pressing plate 20 to press the connecting rod end cover 301, and then install and fix the projection screen 3 on the vehicle. The whole installation process is simple, fast and stable.

[0068] Further, before step S01, it also includes assembling the installation device 1: First, prepare each component; nest the locking spring 60, the support spring 80, and the gasket 70 on the connecting rod 30; press the gasket 70, and partially insert the connecting rod 30 into the sleeve 10 so that there is a gap between the gasket 70 and the upper end of the sleeve 10; place the locking ball 50 above the sleeve 10, and the locking ball 50 enters the sleeve 10 through the gap; cover the upper cover 40 of the sleeve 10, install the pressing plate 20 on the upper cover 40, install the compression spring 3021 and the pressure ball 3022 into the accommodation cavity 30), and install the locking flap 90 at the lower end of the connecting rod 30 to complete the assembly.

[0069] The whole assembly process of the embodiment of the present application is simple, fast and stable. With the help of this installation device, the vehicle-mounted projection screen can be quickly installed on the frame.

[0070] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A vehicle-mounted projection screen installation device, characterized in that Comprising: A sleeve (10), a pressing plate (20), a connecting rod (30), an upper cover (40), a locking ball (50), a locking spring (60), a gasket (70), a supporting spring (80), a compression spring (3021), a pressing ball (3022) and a locking dial (90); The upper cover (40) is connected to the upper end face of the sleeve (10), the pressing plate (20) is movably connected to the upper cover (40), and the pressing plate (20) can rotate; The connecting rod (30) passes through the sleeve (10) from the middle of the upper cover (40) and is slidable in the inner cavity of the sleeve (10); An end cover (301) is formed at the upper end of the connecting rod (30), and a receiving cavity (302) is provided at the lower end. The compression spring (3021) and the pressing ball (3022) are arranged in the receiving cavity (302). The locking dial (90) is movably connected to the lower end of the connecting rod (30), and the locking dial (90) opens / closes along the receiving cavity (302); The locking spring (60), the supporting spring (80) and the gasket (70) are all located in the sleeve (10) and nested on the connecting rod (30). One end of the locking spring (60) contacts the upper cover (40), and the other end contacts the gasket (70). One end of the supporting spring (80) contacts the end cover (301) of the connecting rod (30), and the other end contacts the gasket (70). The locking ball (50) is arranged in the space surrounded by the lower part of the sleeve (10), the connecting rod (30) and the gasket (70). A groove (303) is provided on the connecting rod (30). In the locked state, the locking ball (50) is wholly or partly nested in the groove (303) to prevent the connecting rod (30) from sliding in the inner cavity of the sleeve (10).

2. The installation device according to claim 1, characterized in that, A threaded hole (101) is provided on the upper end face of the sleeve (10), and the upper cover (40) is connected to the threaded hole (101) by a screw.

3. The installation position according to claim 1, wherein, The sleeve (10) is in the shape of a cylinder or a prism.

4. The installation device according to claim 1, characterized in that, The pressing plate (20) is movably connected to the upper cover (40) by a screw or a pin.

5. The installation device according to claim 1, characterized in that, The end cover (301) is integrally formed or connected to the upper end of the connecting rod (30) by a screw (102), and the connecting rod (30) is in the shape of a cylinder or a prism.

6. The mounting device according to claim 1, wherein The lower part of the inner cavity of the sleeve (10) is provided with an inclined wall, and the locking ball (50) slides into or out of the groove (303) through the inclined wall.

7. The installation device according to claim 1, characterized in that, The locking dial (90) is movably connected to the lower end of the connecting rod (30) by a screw or a pin, and the locking dial (90) opens / closes along the receiving cavity (302) to form a V-shaped cavity.

8. The mounting device according to claim 7, wherein One end of the compression spring (3021) contacts the wall of the receiving cavity (302), and the other end contacts the pressing ball (3022). The pressing ball (3022) contacts the locking dial (90). The sliding of the pressing ball (3022) in the V-shaped cavity is controlled by the expansion and contraction of the compression spring (3021) to control the opening / closing degree of the locking dial (90).

9. An installation method for an in-vehicle projection screen, characterized in that, Comprising: S01. A vehicle frame mounting hole (5) is formed in the vehicle frame (2), and a vehicle-mounted projection screen mounting hole (4) is formed in the vehicle-mounted projection screen (3). The vehicle frame mounting hole (5) and the vehicle-mounted projection screen mounting hole (4) are aligned, and the mounting device (1) according to any one of claims 1 to 8 passes through the same; S02. Press down the end cover (301), rotate the pressing plate (20) to press the end cover (301), and the vehicle-mounted projection screen (3) is locked to the vehicle frame (2) to complete the installation.

10. The vehicle-mounted projection screen installation method according to claim 9, characterized in that, Before step S01, the mounting device (1) is further assembled: prepare each component; nest the locking spring (60), the support spring (80), and the gasket (70) on the connecting rod (30); press the gasket (70), partially insert the connecting rod (30) into the sleeve (10) so that there is a gap between the gasket (70) and the upper end of the sleeve (10); place the locking ball (50) above the sleeve (10), and the locking ball (50) enters the sleeve (10) through the gap; cover the upper cover (40) of the sleeve (10), install the pressing plate (20) on the upper cover (40), install the compression spring (3021) and the pressing ball (3022) into the accommodating cavity (302), and install the locking dial (90) at the lower end of the connecting rod (30) to complete the assembly.

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