A projection device convenient to put

Abstract

The application provides a projection device convenient to put, and solves the technical problem that the existing projection device is prone to contraction of the telescopic rod when moving and needs to be readjusted. The application discloses a projection device convenient to put, which comprises a base, a telescopic supporting rod fixed at the top end of the base, two object grooves opened downward at the bottom end of the base, and two groups of stress wheels, each group of the stress wheels comprising at least two stress wheels, and each group of the stress wheels being rotationally arranged in two opposite object grooves, so that the user can conveniently adjust the projector and the projection efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of projection technology, and more particularly to a projection device that is easy to project. Background Technology

[0002] A projector is an optical instrument that uses optical elements to magnify the outline of a workpiece and project it onto a screen. It can use transmitted light for outline measurement, or reflected light to measure the surface shape of blind holes and observe the surface of parts.

[0003] The invention patent with publication number "CN112696595A" and invention title "A Fully Automatic Surround Image Stand" specifically discloses a stand, including an image stand track, a lifting and moving stand, an elliptical moving stand, a variable speed moving stand, and a stand fixing claw. The image stand track is used to place the object to be projected or detected. The lifting and moving stand is used to change the height while changing the position. The elliptical moving stand is used to change the distance while changing the position. The variable speed moving stand is used for variable speed motion imaging. The stand fixing claw is used to clamp the projector or camera.

[0004] However, some home projectors typically use tripods. When they need to be moved, the tripods usually use a rotating telescopic rod for friction fixation, which can easily cause the telescopic rod to lose its fixing effect. This requires readjusting the telescopic rod and adjusting the projector, reducing projection efficiency and causing a lot of trouble. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a projection device that is easy to deploy, solving the technical problem mentioned in the background art where the telescopic rod of existing projection devices tends to retract when moved, requiring readjustment of the projector.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0007] A projection device that is easy to use, including a base;

[0008] A telescopic support rod, which is fixed to the top of the base;

[0009] Two storage slots are provided at the bottom of the base with their openings facing downwards;

[0010] Two sets of force-bearing wheels, each set including at least two, and each set of force-bearing wheels rotatably disposed in two opposite storage slots.

[0011] Working principle:

[0012] The projector is fixed to the top of the telescopic support rod. When the projector needs to be moved, the base is moved, the base moves the telescopic support rod, and the telescopic support rod moves the projector. The user can then push the projector to move using the force wheels.

[0013] Beneficial effects:

[0014] The projector is fixed to the top of the telescopic support rod. When the projector needs to be moved, the base is moved, the base moves the telescopic support rod, and the telescopic support rod moves the projector. The user can push the projector to move by the force wheel, without having to pick up the projector or the telescopic support rod for carrying. This reduces the possibility of the telescopic support rod retracting and eliminates the need for the user to readjust the telescopic support rod. Attached Figure Description

[0015] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0016] In the above figures: 10, second connecting block; 11, storage slot; 12, base; 13, first connecting block; 14, first connecting shaft; 15, elastic element; 16, first contact block; 17, pushing block; 18, fourth connecting shaft; 19, placement block; 20, fifth connecting shaft; 21, protective cover; 22, abutting rod; 23, abutting block; 24, second screw; 25, first screw; 26, adjusting ball; 27, outer shell; 28, telescopic support rod; 30, force-bearing spring; 31, second contact block; 32, contact gear; 33, first force-bearing rod; 34, force-bearing cavity; 35, third connecting shaft; 37, limiting block; 38, rack; 39, sliding cavity; 40, contact cavity; 41, second force-bearing rod; 42, force-bearing block; 43, second connecting shaft; 44, force-bearing wheel. Detailed Implementation

[0017] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Example:

[0019] like Figure 1 As shown, a projection device that is easy to use includes a base 12;

[0020] Telescopic support rod 28, which is fixedly mounted on the top of the base 12;

[0021] Two storage slots 11 are provided at the bottom end of the base 12 and the openings face downwards;

[0022] Two sets of force-receiving wheels 44, each set of force-receiving wheels 44 includes at least two, and each set of force-receiving wheels 44 is rotatably disposed in two opposite storage slots 11;

[0023] The user fixes the projector to the top of the telescopic support rod 28. When the projector needs to be moved, the user moves the base 12, which in turn moves the telescopic support rod 28. The telescopic support rod 28 then moves the projector. The user can move the projector by pushing it with the force wheel, eliminating the need to pick up the projector or the telescopic support rod 28 for transport. This reduces the possibility of the telescopic support rod 28 retracting and eliminates the need for the user to readjust the telescopic support rod 28.

[0024] like Figure 1 As shown, each of the storage slots 11 is rotatably provided with a first connecting shaft 14 at its top end, and a first connecting block 13 is fixedly provided at the bottom end of each first connecting block 14. Two second connecting blocks 10 are fixedly provided at the bottom end of each first connecting block 13. A second connecting shaft 43 is rotatably provided between the two second connecting blocks 10 in the same storage slot 11. Each set of force-bearing wheels 44 is fixed on the corresponding second connecting shaft 43. This connection method allows the force-bearing wheels 44 to rotate relative to the axis of the first connecting shaft 14, thereby facilitating the user to move the base 12.

[0025] like Figure 1 As shown, a force-receiving cavity 34 connects the two storage slots 11. A first force-receiving rod 33 is provided in the force-receiving cavity 34, which moves up and down. A third connecting shaft 35 is rotatably provided at the bottom end of one end of the first force-receiving rod 33 in the storage slot 11. A limiting block 37 is rotatably provided at the bottom end of the third connecting shaft 35. The top of the limiting block 37 abuts against the corresponding second connecting shaft 43. The limiting block 37 abuts against the second connecting shaft 43, restricting the rotation of the second connecting shaft 43, thereby preventing the force-receiving wheel 44 from rotating. As a result, the user cannot adjust the position of the projector by moving the base 12, thus ensuring the stability of the projector.

[0026] like Figure 1 As shown, a second force rod 41 is fixed at the top of the first force rod 33 within the force cavity 34. The second force rod 41 extends upward from the base 12. A contact cavity 40 is provided inside the base 12. The second force rod 41 passes through the contact cavity 40. A force block 42 is fixed at a section of the second force rod 41 within the contact cavity 40. An elastic element 15 connects the top of the force block 42 to the top of the contact cavity 40. Two first contact blocks 16 are fixed at the top of the base 12, facing each other. A fourth connecting shaft 18 is rotatably connected between the two first contact blocks 16. A pushing block 17 is fixed on the fourth connecting shaft 18. A placement block 19 is fixed at the top of the base 12. The top of the placement block 19 abuts against one end of the pushing block 17. By rotating the pushing block 17, the pushing block 17 cooperates with the elastic element 15, causing the second force rod 41 to move up and down. In turn, the second force rod 41 drives the first force rod 33 to move. The movement of the first force rod 33 controls the rotation of the force wheel 44.

[0027] like Figure 1 As shown, several force-bearing springs 30 are connected between the telescopic support rod 28 and the top of the base 12 to provide shock absorption, facilitating quick and stable adjustment of the projector. Two vertical sliding cavities 39 are formed inside the base 12, communicating with the force-bearing cavity 34. Each sliding cavity 39 has a vertically sliding rack 38, which extends into the force-bearing cavity 34 and is fixedly connected to the first force-bearing rod 33. Two left and right parallel springs are fixedly mounted at the top of the base 12. Each of the second contact blocks 31 is rotatably provided with a fifth connecting shaft 20. Each of the fifth connecting shafts 20 is fixedly provided with a contact gear 32 that meshes with the rack 38. Each of the fourth connecting shafts 18 is fixedly provided with an abutment rod 22. Each of the telescopic support rods 28 is fixed with two abutment blocks 23 that engage with the two abutment rods 22 one by one. After the abutment rod 22 rotates, it abuts against the abutment block 23. The cooperation between the abutment rod 22 and the abutment block 23 further enhances the stability of the telescopic support rod 28.

[0028] like Figure 1 As shown, a hollow outer shell 27 is fixed to the bottom end of the telescopic support rod 28. An adjusting ball 26 is rotatably disposed inside the outer shell 27. A first screw 25 is fixed on the adjusting ball 26. A second screw 24 is threadedly connected to the outer shell 27. One end of the second screw 24 abuts against the adjusting ball 26. The projector is fixed by the first screw 25. By loosening the second screw 24 and rotating the adjusting ball 26, the second screw 24 is screwed in, and the second screw 24 abuts against the adjusting ball 26, thus limiting the position of the adjusting ball 26 and consequently limiting the position of the projector.

[0029] A protective cover 21 is installed at the top of the base 12, and the two abutting rods 22 are located inside the protective cover 21, which protects the abutting rods 22.

[0030] Working principle:

[0031] Connect the projector to the first screw 25 to secure it. Loosen the second screw 24 and rotate the adjusting ball 26. The adjusting ball 26 moves the projector. After adjustment, screw the second screw 24 in to secure the adjusting ball 26. Rotate the pushing block 17 counterclockwise by 90 degrees. The pushing block 17 pushes the second force rod 41 downward. The second force rod 41 pushes the first force rod 33 downward. The first force rod 33 moves the third connecting shaft 35 downward. The third connecting shaft 35 moves the limiting block 37 downward. The limiting block 37 moves downward and disengages from the second connecting shaft 43. The first force rod 33 then drives the gear... The rack 38 moves downward, meshing with the contact gear 32. The contact gear 32 drives the abutment rod 22 to rotate via the fifth connecting shaft 20. The abutment rod 22 rotates and contacts the abutment block 23. The user moves the base 12 via the force wheel 44. The force wheel 44 drives the second connecting shaft 43 to rotate. The second connecting shaft 43 drives the first connecting block 13 to rotate via the second connecting block 10. The first connecting block 13 drives the first connecting shaft 14 to rotate. After the movement is completed, the push block 17 is rotated 90 degrees clockwise. The elastic element 15 pushes the force block 42 to move upward. The force block 42 drives the second force rod 41 to move upward.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A projection device that is easy to project, characterized in that: Including the base (12); Telescopic support rod (28), the telescopic support rod (28) is fixed to the top of the base (12); Two storage slots (11) are provided at the bottom of the base (12) and the openings face downwards; Two sets of force-receiving wheels (44), each set of force-receiving wheels (44) includes at least two, and each set of force-receiving wheels (44) is rotatably disposed in two opposite storage slots (11); Each of the storage slots (11) is rotatably provided with a first connecting shaft (14) at its top end, and a first connecting block (13) is fixedly provided at the bottom end of each first connecting block (13). Two second connecting blocks (10) are fixedly provided at the bottom end of each first connecting block (13). A second connecting shaft (43) is rotatably provided between the two second connecting blocks (10) in the same storage slot (11). Each set of force-bearing wheels (44) is fixed on the corresponding second connecting shaft (43). A force-receiving cavity (34) is connected between the two storage slots (11). A first force-receiving rod (33) is provided in the force-receiving cavity (34) for vertical movement. A third connecting shaft (35) is rotatably provided at the bottom end of one end of the first force-receiving rod (33) in the storage slot (11). A limiting block (37) is rotatably provided at the bottom end of the third connecting shaft (35). The top end of the limiting block (37) abuts against the corresponding second connecting shaft (43). The first force-bearing rod (33) is fixed at the top end of the force-bearing cavity (34) with a second force-bearing rod (41). The second force-bearing rod (41) extends upward out of the base (12). The base (12) has a contact cavity (40). The second force-bearing rod (41) passes through the contact cavity (40). A force-bearing block (42) is fixed at a section of the second force-bearing rod (41) in the contact cavity (40). An elastic element (15) is connected between the top end of the force-bearing block (42) and the top end of the contact cavity (40). The base (12) has two first contact blocks (16) fixed at the top, which are opposite each other. A fourth connecting shaft (18) is rotatably provided between the two first contact blocks (16). A push block (17) is fixed on the fourth connecting shaft (18). The base (12) has two vertical sliding cavities (39) inside, and the two sliding cavities (39) are connected to the force-bearing cavity (34). Each sliding cavity (39) is vertically slidably provided with a rack (38). The two racks (38) extend into the force-bearing cavity (34) and are fixedly connected to the first force-bearing rod (33). The top of the base (12) is fixedly provided with two second contact blocks (31) that are opposite to each other. Each second contact block (31) is rotatably provided with a fifth connecting shaft (20). Each fifth connecting shaft (20) is fixedly provided with a contact gear (32) that meshes with the opposite rack (38). Each fourth connecting shaft (18) is fixedly provided with an abutment rod (22). Each telescopic support rod (28) is fixed with two abutment blocks (23) that are engaged with the two abutment rods (22) one by one. The bottom end of the telescopic support rod (28) is fixed with a hollow outer shell (27), and an adjusting ball (26) is rotatably provided inside the outer shell (27). A first screw (25) is fixed on the adjusting ball (26), and a second screw (24) is threadedly connected to the outer shell (27). One end of the second screw (24) abuts against the adjusting ball (26). The top of the base (12) is fixed with a placement block (19), and the top of the placement block (19) abuts against one end of the push block (17).

2. The projection device for easy projection according to claim 1, characterized in that: Several force-bearing springs (30) are connected between the telescopic support rod (28) and the top of the base (12).

3. The projection device for easy projection according to claim 1, characterized in that: The base (12) is equipped with a protective cover (21) at its top, and the two abutment rods (22) are located inside the protective cover (21).

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