Multimedia teaching projector stand for cultural industry management teaching

Abstract

The present invention discloses a multimedia teaching projector bracket used in cultural industry management teaching, and belongs to the technical field of multimedia teaching projector brackets. The multimedia teaching projector bracket used in cultural industry management teaching includes a protective box, an adjustment rod fixedly arranged at the front end of a spring A, two pull rods symmetrically fixedly arranged at the front end of the adjustment rod, a movable rod rotatably connected to the outer end of the pull rod through a pin shaft, two racks symmetrically slidably connected to the front side of the cavity, an L-shaped clamping block welded to the outer end of the rack, a projector body clamped between the two L-shaped clamping blocks, and a close fit between the structures enables the device to directly place the projector body inside the L-shaped clamping block when in use, and the design of the spring A not only avoids the situation where the projector is damaged due to uneven force of manual screw fixing, but also facilitates the staff to disassemble and install, thereby effectively fixing the projector.

Description

Technical Field

[0001] The invention relates to the technical field of a multimedia teaching projector bracket, and more specifically to a multimedia teaching projector bracket used in cultural industry management teaching. Background Art

[0002] A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to computers, VCDs, DVDs, BDs, game consoles, DVs, etc. through different interfaces to play corresponding video signals. With the promotion and popularization of film and television teaching, projectors are widely used in multimedia teaching. The projectors used in multimedia teaching are generally fixed on a projector stand, placed on a table, or fixed on a wall. The document with the prior art publication number CN204009331U provides a multimedia teaching projector bracket for cultural industry management teaching. The device includes a projector connection seat and a telescopic rod. The projector connection seat is fixedly connected to the lower end of the telescopic rod. A slide rail is arranged above the telescopic rod, and a slider is arranged on the lower side of the slide rail. The upper end of the telescopic rod is fixedly connected to the slider, so that the telescopic rod and the projector connection seat can slide along the slide rail. The slide rail is connected to a U-shaped clamp, and one or more top screws are arranged on both sides of the U-shaped clamp; the document with the prior art publication number CN210319330U provides a multimedia teaching projector bracket. The device is dustproof through the second slide bar moving horizontally along the first slide bar and rotating along the axial direction of the first slide bar, and the dustproof gauze above the placement box is placed. The above devices still have the following problems: the devices are simple in structure and single in function, and the projector cannot be effectively fixed or fixed by screws. The uneven force causes damage to the projector. At the same time, when the projector is moved, the bump will cause damage to the projector. Among other existing solutions, for example, CN209590524U is an interactive projection device. Although bolts are not used to fix the projector, an articulated long rod is used. A buffer mechanism is provided at the end of the articulated long rod. However, the articulated long rod still needs to be provided with a matching rotating groove on the projector during installation, and the articulated rod has a certain length, which has inherent disadvantages for the stable suspension of the projector and requires subsequent complex adjustment and optimization.

[0003] In view of this, we propose a multimedia teaching projector bracket for cultural industry management teaching, which eliminates the need for effective fixing of the projector with screws and effectively protects and buffers the projector when bumps occur during movement, thus avoiding damage to the projector caused by bumps. Summary of the invention

[0004] 1. Technical problems to be solved

[0005] The purpose of the present invention is to provide a multimedia teaching projector stand used for cultural industry management teaching, so as to solve the problems raised in the above-mentioned background technology.

[0006] 2. Technical solution

[0007] A multimedia teaching projector stand used in cultural industry management teaching comprises a protective box, the bottom surface of the protective box is in a triangular structure and is provided with a plurality of support rods B, the bottom surface of the support rod B is provided with a brake wheel, the front side of the protective box is hinged with a box door, a handle is provided at the middle position of the outer side of the bottom surface of the box door, two square grooves are symmetrically provided on the upper side of the inner wall of the protective box, the interior of the protective box is in an upper and lower structure and is provided with two placement plates, the upper side of the placement plate on the upper side is linearly and evenly spaced and is provided with a plurality of tool placement areas, the rear side of the outer wall of the placement plate on the upper side is rotatably connected to two support rods A through a pin shaft, the middle part of the outer wall of the placement plate on the upper side is rotatably connected to a balance rod through a pin shaft, the front outer wall of the placement plate on the upper side is symmetrically rotatably connected to a connecting rod through a pin shaft, and the upper side of the placement plate on the lower side is provided with a U-shaped block A. A support plate is provided on the inner side of the U-shaped block A, a fixed block is provided on the upper rear end of the support plate, a cavity is opened inside the fixed block, a circular cavity is opened in the middle position of the rear end of the fixed block, a spring A is provided inside the circular cavity, an adjusting rod is fixedly provided at the front end of the spring A, two pull rods are symmetrically fixedly provided at the front end of the adjusting rod, a movable rod is rotatably connected to the outer end of the pull rod by a pin shaft, two racks are symmetrically slidably connected to the front side of the cavity, an L-shaped clamping block is welded to the outer end of the rack, a projector body is clamped between the two L-shaped clamping blocks, two protective boxes are fixedly provided in the middle part of the inner side of the U-shaped block A, the lower side of the inner side of the protective box is a left-right structure and two buffer rods are rotatably connected by a pin shaft, a mounting tube is provided on the outer side of the upper end of the buffer rod, a spring B is provided on the inner side of the mounting tube, and a U-shaped block B is sleeved on the upper side of the protective box through a rotating shaft.

[0008] Preferably, the upper end of the support rod A is rotatably connected to the inner wall of the square groove through a pin, the upper end of the balance rod is rotatably connected to the inner wall of the square groove through a pin, and the lower ends of the balance rod and the connecting rod are rotatably connected to the outer wall of the placement plate located on the lower side through a pin.

[0009] Preferably, the outer end of the movable rod passes through the interior of the fixed block and extends into the interior of the cavity and is rotatably connected to an incomplete gear via a pin shaft, and the incomplete gear is meshedly connected to the rack.

[0010] Preferably, the buffer rod is arranged in a 7-shaped structure, the spring B is arranged in an inclined structure, and the outer end of the spring B is connected and fixed to the mounting tube.

[0011] Preferably, the outer end of the rotating shaft passes through the inner wall of the protective box and extends to the outside, and the inner end of the rotating shaft is connected and fixed to the outer wall of the supporting plate.

[0012] Preferably, two stop columns are fixedly provided on the upper outer end of the U-shaped block B, and the stop columns are in abutment with the outer end of the mounting tube.

[0013] 3. Beneficial effects

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] 1. The present invention has an adjusting rod fixed at the front end of the spring A, and two pull rods are symmetrically fixed at the front end of the adjusting rod, the outer ends of the pull rods are rotatably connected to the movable rods through pin shafts, and the front side of the cavity is symmetrically slidably connected to two racks, and the outer ends of the racks are welded with L-shaped clamping blocks, and the projector body is clamped between the two L-shaped clamping blocks. The tight fit between the structures enables the projector body to be directly placed inside the L-shaped clamping blocks when the device is in use. The design of the spring A not only avoids the situation where the projector is damaged due to uneven force of manual screw fixing, but also facilitates the staff to disassemble and install, thereby effectively fixing the projector.

[0016] 2. The present invention has two protective boxes fixedly arranged in the middle of the inner side of the U-shaped block A. The lower side of the inner part of the protective box is a left-right structure and is rotatably connected to two buffer rods through a pin shaft. A mounting tube is arranged on the outer side of the upper end of the buffer rod, and a spring B is arranged on the inner side of the mounting tube. The upper side of the protective box is sleeved with a U-shaped block B through a rotating shaft. The device can effectively protect and buffer the projector when the mobile projector is bumpy through the design of the spring B, thereby avoiding damage to the projector due to bumps and extending its service life.

[0017] 3. The present invention provides two placement plates in an upper and lower structure inside the protective box, and a plurality of tool placement areas are linearly and evenly spaced on the upper side of the placement plate. Two support rods A are rotatably connected to the rear side of the outer wall of the placement plate on the upper side through a pin shaft, so that the placement plate can be pulled out when the device is in use, so that the two placement plates are displayed in front of the workers, and the design of the tool placement area of ​​the placement plate on the upper side allows the remote control or indication pen of the projector to be directly used, while the projector is extended for use, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a cross-sectional view of the internal structure of the protection box of the present invention;

[0020] Figure 3 It is an expanded view of the internal structure of the fixing block of the present invention;

[0021] Figure 4 This is a disassembled diagram of the internal structure of the protection box of the present invention;

[0022] Figure 5 It is an enlarged view of the structure at A of the present invention;

[0023] Explanation of the numbers in the figure: 1. Protection box; 101. Square groove; 102. Support rod A; 103. Placement plate; 104. Tool placement area; 105. Balance rod; 106. Connecting rod; 2. Support rod B; 3. Brake wheel; 4. Box door; 5. Handle; 6. U-shaped block A; 601. Fixed block; 602. Cavity; 603. Circular cavity; 604. Spring A; 605. Pull rod; 606. Movable rod; 607. Incomplete gear; 608. Rack; 609. L-shaped clamping block; 6010. Support plate; 6011. Adjustment rod; 7. Projector body; 8. Protection box; 801. Buffer rod; 802. Mounting tube; 803. Spring B; 804. Rotating shaft; 805. U-shaped block B; 806. Stop column. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the present invention, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1-5 , the present invention provides a technical solution:

[0028] A multimedia teaching projector stand used in cultural industry management teaching comprises a protective box 1, the bottom surface of the protective box 1 is in a triangular structure and is provided with a plurality of support rods B2, the bottom surface of the support rod B2 is provided with a brake wheel 3, a box door 4 is hinged on the front side of the protective box 1, a handle 5 is provided at the middle position of the outer side of the bottom surface of the box door 4, two square grooves 101 are symmetrically provided on the upper side of the inner wall of the protective box 1, the interior of the protective box 1 is in an up-and-down structure and is provided with two placement plates 103, a plurality of tool placement areas 104 are linearly and evenly spaced on the upper side of the placement plate 103 on the upper side, the rear side of the outer wall of the placement plate 103 on the upper side is rotatably connected to two support rods A102 through a pin shaft, a balance rod 105 is rotatably connected to the middle part of the outer wall of the placement plate 103 on the upper side through a pin shaft, a connecting rod 106 is symmetrically rotatably connected to the front outer wall of the placement plate 103 on the upper side, a U-shaped block A6 is provided on the upper side of the placement plate 103 on the lower side, a support plate 6010 is provided on the inner side of the U-shaped block A6, and a support plate 6010 is provided on the inner side of the U-shaped block A6. A fixing block 601 is provided at the rear end of the upper side of the plate 6010, a cavity 602 is provided inside the fixing block 601, a circular cavity 603 is provided at the middle position of the rear end of the fixing block 601, a spring A604 is provided inside the circular cavity 603, an adjusting rod 6011 is fixed at the front end of the spring A604, two pull rods 605 are symmetrically fixed at the front end of the adjusting rod 6011, the outer end of the pull rod 605 is rotatably connected to a movable rod 606 through a pin shaft, and two gears are symmetrically slidably connected to the front side of the cavity 602. Rack 608, an L-shaped clamping block 609 is welded on the outer end of the rack 608, a projector body 7 is clamped between the two L-shaped clamping blocks 609, two protective boxes 8 are fixedly provided in the middle of the inner side of the U-shaped block A6, the lower side of the inner part of the protective box 8 is a left-right structure and is connected to two buffer rods 801 by rotating pins, an installation tube 802 is provided on the outer side of the upper end of the buffer rod 801, a spring B803 is provided on the inner side of the installation tube 802, and a U-shaped block B805 is sleeved on the upper side of the protective box 8 through a rotating shaft 804.

[0029] When the device is in use, the projector body 7 can be directly placed inside the L-shaped clamping block. The design of the spring A604 not only avoids damage to the projector due to uneven force of manual screw fixation, but also facilitates disassembly and installation by the staff, thereby effectively fixing the projector.

[0030] Specifically, the upper end of the support rod A102 is rotatably connected to the inner wall of the square groove 101 through a pin, the upper end of the balance rod 105 is rotatably connected to the inner wall of the square groove 101 through a pin, and the lower ends of the balance rod 105 and the connecting rod 106 are rotatably connected to the outer wall of the lower placement plate 103 through a pin. By pulling the lower placement plate 103, the balance rod 105 and the connecting rod 106 are balanced, so that the lower placement plate 103 is extended. When it reaches the maximum, at this time, due to the balance rod 105 and the support rod 102 The design of the two rods is balanced, the upper placement plate 103 is extended.

[0031] Furthermore, the outer end of the movable rod 606 passes through the interior of the fixed block 601 and extends to the interior of the cavity 602 and is rotatably connected to the incomplete gear 607 through a pin shaft, and the incomplete gear 607 is meshed and connected with the rack 608. The adjustment rod 6011 moves backward by the pulling of the spring A604, and at this time, the pull rod 605 drives the movable rod 606, so that the incomplete gear 607 rotates, so that the rack 608 moves inward, so that the L-shaped clamping block 609 forms a clamp.

[0032] Furthermore, the buffer rod 801 is arranged in a 7-shaped structure, the spring B803 is arranged in an inclined structure, and the outer end of the spring B803 is connected and fixed to the mounting tube 802. The buffer rod 801 is pulled by the spring B803, so that the projector body 7 can always maintain a balanced state.

[0033] Furthermore, the outer end of the rotating shaft 804 passes through the inner wall of the protective box 8 and extends to the outside, and the inner end of the rotating shaft 804 is connected and fixed to the outer wall of the supporting plate 6010.

[0034] It is worth noting that two stopper posts 806 are fixedly arranged on the upper outer end of the U-shaped block B805, and the stopper posts 806 are in contact with the outer end of the mounting tube 802. When receiving external force, at least one stopper post 806 is in contact with the outer side of the mounting tube 802, so that the spring B803 pulls the buffer rod 801 to reset, and effective buffering is performed.

[0035] When the multimedia teaching projector stand used for teaching cultural industry management is needed to use the projector body 7 placed inside, at this time, it is pushed to a suitable position. When bumps occur during movement, since two protective boxes 8 are fixedly provided in the middle of the inner side of the U-shaped block A6, the lower side of the inner part of the protective box 8 is a left-right structure and is connected to two buffer rods 801 by rotating through a pin, and the buffer rod 801 is arranged in a 7-shaped structure, and the spring B803 is arranged in an inclined structure. The outer end of the spring B803 is connected and fixed to the mounting tube 802, and two blocking columns 806 are fixedly provided on the upper end of the outer side of the U-shaped block B805, and the blocking columns 806 are in contact with the outer end of the mounting tube 802. When receiving external force, at least one blocking column 806 contacts the outside of the installation tube 802, so that the spring B803 pulls the buffer rod 801 to reset, and performs effective buffering, so that the projector body 7 can always maintain a balanced state. At this time, the staff opens the box door 4 and pulls the placement plate 103 on the lower side. Since the upper end of the support rod A102 is rotatably connected to the inner wall of the square groove 101 through a pin, the upper end of the balance rod 105 is rotatably connected to the inner wall of the square groove 101 through a pin, and the lower ends of the balance rod 105 and the connecting rod 106 are rotatably connected to the outer wall of the placement plate 103 on the lower side through a pin. Therefore, by pulling the placement plate 103 on the lower side, the balance rod 105 and the connecting rod 106 are designed to balance the two rods, so that the placement plate 103 on the lower side is extended. When it reaches the maximum, at this time, since the balance rod 105 and the support rod 102 are balanced The design of the balance allows the upper placement plate 103 to extend, and the design of the tool placement area 104 of the upper placement plate 103 allows it to directly use the remote control or indication pen of the projector, and at the same time the projector body 7 is extended for use, which is very convenient. When the projector body 7 is not placed inside it for current placement, the projector body 7 can be directly placed on the inside of the L-shaped clamping block. Since the outer end of the movable rod 606 extends through the interior of the fixed block 601 to the interior of the cavity 602 and is rotatably connected with an incomplete gear 607 through a pin shaft, the incomplete gear 607 is meshed with the rack 608. The adjustment rod 6011 is moved backward by the pulling of the spring A604. At this time, the pull rod 605 drives the movable rod 606, thereby rotating the incomplete gear 607, thereby moving the rack 608 inward, so that the L-shaped clamping block 609 forms a clamp.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multimedia teaching projector stand for cultural industry management teaching, comprising a protective box (1), characterized in that: The bottom surface of the protection box (1) is in a triangular structure and is provided with a plurality of support rods B (2), the bottom surface of the support rods B (2) is provided with a brake wheel (3), the front hinge of the protection box (1) is provided with a box door (4), the outer middle position of the bottom surface of the box door (4) is provided with a handle (5), the upper side of the inner wall of the protection box (1) is symmetrically provided with two square grooves (101), the interior of the protection box (1) is in an upper and lower structure and is provided with two placement plates (103), the upper side of the placement plate (103) is linearly and evenly spaced with a plurality of tool placement areas (104), and the placement plate (103) on the upper side is provided with a plurality of tool placement areas (104) on the upper side. The rear side of the outer wall of the placement plate (103) is rotatably connected to two support rods A (102) via a pin shaft, the middle part of the outer wall of the placement plate (103) located on the upper side is rotatably connected to a balance rod (105) via a pin shaft, the front outer wall of the placement plate (103) located on the upper side is symmetrically rotatably connected to a connecting rod (106) via a pin shaft, the upper end of the balance rod (105) is rotatably connected to the inner wall of the square groove (101) via a pin shaft, and the lower ends of the balance rod (105) and the connecting rod (106) are both rotatably connected to the outer wall of the placement plate (103) located on the lower side via a pin shaft; A U-shaped block A (6) is provided on the upper side of the placement plate (103) located at the lower side, a support plate (6010) is provided on the inner side of the U-shaped block A (6), a fixing block (601) is provided at the rear end of the upper side of the support plate (6010), a cavity (602) is provided inside the fixing block (601), a circular cavity (603) is provided at the middle position of the rear end inside the fixing block (601), a spring A (604) is provided inside the circular cavity (603), an adjusting rod (6011) is fixedly provided at the front end of the spring A (604), and two pull rods are symmetrically fixedly provided at the front end of the adjusting rod (6011). (605), the outer end of the pull rod (605) is rotatably connected to a movable rod (606) via a pin shaft, the front side of the cavity (602) is symmetrically slidably connected to two racks (608), the outer end of the movable rod (606) passes through the interior of the fixed block (601) and extends into the interior of the cavity (602) and is rotatably connected to an incomplete gear (607) via a pin shaft, the incomplete gear (607) is meshed with the rack (608), the outer end of the rack (608) is welded with an L-shaped clamping block (609), and a projector body (7) is clamped between the two L-shaped clamping blocks (609); Two protection boxes (8) are fixedly arranged at the middle part of the inner side of the U-shaped block A (6); the lower side of the inner side of the protection box (8) is in a left-right structure and is rotatably connected to two buffer rods (801) via a pin shaft; a mounting tube (802) is arranged on the outer side of the upper end of the buffer rod (801); a spring B (803) is arranged on the inner side of the mounting tube (802); the buffer rod (801) is arranged in a 7-shaped structure; the spring B (803) is arranged in an inclined structure; a U-shaped block B (805) is sleeved on the upper side of the protection box (8) via a rotating shaft (804); and two blocking columns (806) are fixedly arranged on the upper end of the outer side of the U-shaped block B (805).

2. The multimedia teaching projector stand for cultural industry management teaching according to claim 1 is characterized by: The upper end of the support rod A (102) is rotatably connected to the inner wall of the square groove (101) via a pin.

3. The multimedia teaching projector stand for cultural industry management teaching according to claim 1 is characterized by: The outer end of the spring B (803) is connected and fixed to the mounting tube (802).

4. The multimedia teaching projector stand for cultural industry management teaching according to claim 1, characterized in that: The outer end of the rotating shaft (804) passes through the inner wall of the protective box (8) and extends to the outside, and the inner end of the rotating shaft (804) is connected and fixed to the outer wall of the support plate (6010).

5. The multimedia teaching projector stand for cultural industry management teaching according to claim 1, characterized in that: The blocking column (806) is in abutment with the outer end of the mounting tube (802).

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