A lectern structure that is easy to move

Abstract

The utility model relates to the technical field of speaking platform, and disclose a kind of speaking platform structure of easy movement, including base, still including two slide plates and adjusting mechanism, two slide plates are symmetrically slidably connected on base, the top of two slide plates is fixedly connected with connecting plate, two slide plates are all fixedly connected with mounting plate, the bottom of mounting plate is fixedly connected with universal wheel, the top of base is fixedly connected with cabinet body, the top of cabinet body is fixedly connected with table top, the bottom of base is fixedly connected with foot line, the inside of cabinet body is provided with adjusting mechanism. Four universal wheels can be made synchronous lifting contact or disengage ground by connecting plate lifting, universal wheel contact ground moves, after disengaging ground, positioning is carried out by foot line, universal wheel can be avoided to bear pressure, universal wheel is avoided to bear pressure for a long time and leads to deformation, and the support friction of foot line is greater, positioning is more stable, effectively prolongs service life.

Description

Technical Field

[0001] This utility model relates to the field of lectern technology, and in particular to a lectern structure that is easy to move. Background Technology

[0002] A lectern is a platform used for giving speeches. It is usually made of wood or metal and is generally between 1.1 meters and 1.3 meters high. In order to be used in multiple areas, a lectern needs to be moved by a mobile mechanism to meet dynamic needs.

[0003] In existing technology, typical lecterns are equipped with casters at the bottom to move the lectern around and meet dynamic needs. When heavy objects are placed on the lectern, the center of gravity of the entire lectern shifts, and the weight increases and concentrates on one or more points. This directly increases the pressure on the casters, especially when the objects on the lectern are unevenly distributed, resulting in significant differences in weight distribution among the casters and uneven stress. Under this uneven stress for a long time, the casters bearing greater pressure are prone to physical deformation. This deformation may be small, but it will gradually accumulate over time and with the continuous action of pressure, eventually affecting the normal function of the casters. Once the support capacity of the casters decreases, the lectern may wobble during use, or even tip over in extreme cases. This will not only damage the lectern itself but may also pose a safety hazard to people and objects on the lectern. Therefore, it is necessary to improve the structure of the lectern so that it is easy to move to solve the above problems. Utility Model Content

[0004] To overcome the problem of uneven stress on the casters when heavy objects are placed on the lectern, which causes deformation of the casters over a long period of time and leads to unstable support.

[0005] The technical solution of this utility model is as follows: a convenient movable lectern structure, including a base, two sliding plates and an adjustment mechanism, the two sliding plates are symmetrically slidably connected to the base, a connecting plate is fixedly connected to the top of the two sliding plates, an mounting plate is fixedly connected to each of the two sliding plates, a caster wheel is fixedly connected to the bottom of the mounting plate, a cabinet is fixedly connected to the top of the base, a tabletop is fixedly connected to the top of the cabinet, a baseboard is fixedly connected to the bottom of the base, and an adjustment mechanism is provided inside the cabinet.

[0006] Preferably, the base has matching grooves and through slots at corresponding positions on the slide plate and the mounting plate, respectively, and the slide plate slides inside the matching groove, while the mounting plate passes through the matching through slot.

[0007] Preferably, a threaded cylinder is rotatably connected to the base, an external hexagonal ring is fixedly connected to the outside of the threaded cylinder, a threaded rod that drives the universal wheel to rise and fall is threadedly connected inside the threaded cylinder, the threaded rod is fixedly connected to the connecting plate, a positioning ring is fixedly connected to the outside of the threaded cylinder, a ratchet is fixedly connected to the positioning ring, a rotating ring is rotatably connected to the positioning ring, a positioning seat is fixedly connected inside the rotating ring, a pawl is rotatably connected to the positioning seat, the pawl contacts the ratchet, a first spring is fixedly connected between the pawl and the rotating ring, and a handle is fixedly connected to the outside of the rotating ring.

[0008] Preferably, five positioning seats are provided, and the five positioning seats are arranged in a circular array inside the rotating ring.

[0009] Preferably, the adjustment mechanism includes a partition for placing items, the partition is located inside the cabinet, a limit plate is slidably connected to the partition, a retaining ball is fixedly connected to the outside of the limit plate, and a second spring is fixedly connected between the limit plate and the partition.

[0010] Preferably, the cabinet interior has slots from top to bottom that fit the partitions, and the partitions are engaged inside the slots.

[0011] Preferably, the cabinet has a locking hole at the corresponding position of the locking ball, and the locking ball is locked inside the locking hole. The partition has a limiting hole at the corresponding position of the limiting plate and the locking ball, and the limiting plate and the locking ball slide inside the limiting hole.

[0012] The beneficial effects of this utility model are: 1. The four casters can be raised and lowered synchronously to contact or detach from the ground by raising and lowering the connecting plate. The casters move when in contact with the ground, and are positioned by the baseboard after detaching from the ground. This avoids the casters bearing pressure and prevents them from deforming due to prolonged pressure. In addition, the baseboard support provides greater friction, making the positioning more stable and effectively extending the service life.

[0013] 2. Adjust the height of the partition according to the usage needs, and position the partition in the slot at the appropriate position so that the items to be placed can be positioned at different heights, which can be adjusted according to the size of the items. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the front structure of this utility model; Figure 2 This is a schematic diagram of the back structure of this utility model; Figure 3 This is a cross-sectional view of the base structure of this utility model; Figure 4 This is a schematic diagram of the mating structure of the threaded cylinder and threaded rod of this utility model; Figure 5 This is a schematic cross-sectional view of the positioning ring structure of this utility model; Figure 6 This is a schematic diagram of the mating structure of the positioning ring, ratchet, and rotating ring of this utility model; Figure 7 This is a schematic diagram of the adjustment mechanism of this utility model.

[0015] Explanation of reference numerals in the attached diagram: 1. Base; 21. Slide plate; 22. Connecting plate; 23. Mounting plate; 24. Caster wheel; 25. Threaded cylinder; 26. External hexagonal ring; 27. Threaded rod; 28. Positioning ring; 29. ​​Ratchet; 210. Rotating ring; 211. Positioning seat; 212. Pad; 213. First spring; 214. Handle; 31. Partition; 32. Limiting plate; 33. Ball catcher; 34. Second spring; 4. Cabinet; 5. Countertop; 6. Baseboard. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Please see Figures 1-7 This utility model provides an embodiment of a movable lectern structure, including a base 1, two sliding plates 21, and an adjustment mechanism. The two sliding plates 21 are symmetrically slidably connected to the base 1. A connecting plate 22 is fixedly connected to the top of each sliding plate 21, and a mounting plate 23 is fixedly connected to each sliding plate 21. A caster wheel 24 is fixedly connected to the bottom of the mounting plate 23. A cabinet 4 is fixedly connected to the top of the base 1, and a tabletop 5 is fixedly connected to the top of the cabinet 4. A baseboard 6 is fixedly connected to the bottom of the base 1. The interior of the cabinet 4... An adjustment mechanism is provided. When movement is required, the connecting plate 22 drives the two sliding plates 21 to slide. The sliding plates 21 drive the mounting plate 23, and the mounting plate 23 drives the casters 24, so that the casters 24 contact the ground and lift the base 1 and the baseboard 6, so that the baseboard 6 does not contact the ground. Thus, the movement is achieved by the casters 24. After moving to the appropriate position, the casters 24 are raised again, so that the baseboard 6 contacts the ground again and bears the weight of the entire device for positioning. The adjustment mechanism can be adjusted inside the cabinet 4 to adjust the height of the placed items.

[0018] Please see Figures 1-6In this embodiment, the base 1 has matching grooves and through slots at corresponding positions on the slide plate 21 and the mounting plate 23, respectively. The slide plate 21 slides inside the matching groove, and the mounting plate 23 passes through the matching through slot. The slide plate 21 can move vertically through the groove, preventing it from tilting. When the slide plate 21 is raised and lowered stably, the mounting plate 23 can be raised and lowered smoothly without getting stuck in the through slot. A threaded cylinder 25 is rotatably connected to the base 1. An external hexagonal ring 26 is fixedly connected to the outside of the threaded cylinder 25. A threaded rod 27 that drives the universal wheel 24 to rise and fall is threadedly connected inside the threaded cylinder 25. The threaded rod 27 is fixedly connected to the connecting plate 22. A positioning ring 28 is fixedly connected to the outside of the threaded cylinder 25. A ratchet 29 is fixedly connected to the positioning ring 28. A rotating ring 210 is rotatably connected to the positioning ring 28. A positioning seat 211 is fixedly connected inside the rotating ring 210. A pawl 212 is rotatably connected to the positioning seat 211. The pawl 212 engages with the ratchet 29. A first spring 213 is fixedly connected between the pawl 212 and the rotating ring 210. A handle 214 is fixedly connected to the outside of the rotating ring 210. The height of the caster wheel 24 can be flexibly raised and lowered by the cooperation of the threaded cylinder 25 and the threaded rod 27. It is easier and more convenient to lower the height of the caster wheel 24 by pulling the handle 214. After the foot line 6 contacts the ground, the raising and lowering of the caster wheel 24 is relatively easy. The caster wheel 24 can be easily raised by rotating the outer hexagonal ring 26 with the help of a tool. Five positioning seats 211 are provided, and the five positioning seats 211 are distributed in a circular array inside the rotating ring 210. The five positioning seats 211 are locked in the tooth groove of the ratchet 29 by the pawl 212, so that the handle 214 can be rotated in one direction. The adjustment of the handle 214 can be referenced with a torque wrench. The cooperation between the ratchet 29 and the pawl 212 is common knowledge to those skilled in the art, so it will not be described in detail. Thus, it is more convenient and faster to lower the caster wheel 24 by rotating the handle 214.

[0019] Please see Figure 1 , Figure 7In this embodiment, the adjustment mechanism includes a partition 31 for placing items. The partition 31 is disposed inside the cabinet 4. A limiting plate 32 is slidably connected to the partition 31. A retaining ball 33 is fixedly connected to the outside of the limiting plate 32. A second spring 34 is fixedly connected between the limiting plate 32 and the partition 31. The partition 31 can be pulled out for corresponding height adjustment. It can be adjusted according to the size of the items to be placed, making it flexible and convenient to use. The cabinet 4 has slots that fit the partition 31 from top to bottom, and the partition 31 is engaged in the slots. Through the corresponding slots, The partition 31 can be positioned inside the corresponding slot, and the height can be adjusted according to the position of the slot, which is flexible and has a wider range of applications. The cabinet 4 has a corresponding hole for the locking ball 33, and the locking ball 33 is locked inside the hole. The partition 31 has a limit hole for the corresponding position of the limiting plate 32 and the locking ball 33, and the limiting plate 32 and the locking ball 33 slide inside the limit hole. The limit hole can prevent the limiting plate 32 and the locking ball 33 from sliding too much and disengaging. Positioned inside the limit hole, the locking ball 33 increases the friction and prevents the partition 31 from sliding on its own.

[0020] During operation, the operator pulls handle 214, which drives rotating ring 210. Rotating ring 210 pushes ratchet 29 via pawl 212. Ratchet 29 drives positioning ring 28, which in turn drives threaded cylinder 25. Universal wheel 24 rotates and screws into threaded rod 27. Threaded rod 27 drives connecting plate 22, which in turn drives sliding plate 21. Sliding plate 21 drives mounting plate 23, which in turn drives universal wheel 24, causing universal wheel 24 to descend. The operator then pulls handle 214 to a certain position and pushes it in the opposite direction. Handle 214 drives rotating ring 210 in reverse. During this reverse rotation, rotating ring 210 drives positioning seat 211, which in turn drives pawl 212. Pawl 212, pushed by the teeth of ratchet 29, rotates on positioning seat 211, simultaneously compressing first spring 213. When the pawl 212 is reset, the rotating ring 210 will not be affected by the pawl 212 when it reverses. Repeat the above operation until the caster wheel 24 contacts the ground and lifts the foot line 6 so that the foot line 6 does not contact the ground. The entire device can be moved to a suitable position by the caster wheel 24. By rotating the outer hexagonal ring 26, the threaded cylinder 25 is reversed. The rotation of the threaded cylinder 25 unscrews the threaded rod 27, which raises the caster wheel 24 and makes the foot line 6 contact the ground again. The entire device can be positioned by the foot line 6. Pull out the partition 31. The partition 31 drives the retaining ball 33. The retaining ball 33 is squeezed by the retaining hole and drives the limiting plate 32 to slide. The sliding of the limiting plate 32 compresses the second spring 34. The second spring 34 is used for the automatic reset of the limiting plate 32 and the retaining ball 33. Pull out the partition 31 and insert the partition 31 into the retaining groove in the appropriate position. The retaining ball 33 is used to increase friction.

[0021] Through the above steps, the caster wheel 24 moves after contacting the ground. After leaving the ground, it is positioned by the baseboard 6, which avoids the caster wheel 24 bearing pressure. This solves the problem of the caster wheel being stressed when heavy objects are placed on the lectern, and the caster wheel deforming due to uneven stress over a long period of time, resulting in unstable support.

Claims

1. A portable lectern structure, comprising a base (1), characterized in that: It also includes two sliding plates (21) and an adjustment mechanism. The two sliding plates (21) are symmetrically slidably connected to the base (1). A connecting plate (22) is fixedly connected to the top of the two sliding plates (21). An installation plate (23) is fixedly connected to each of the two sliding plates (21). A caster wheel (24) is fixedly connected to the bottom of the installation plate (23). A cabinet (4) is fixedly connected to the top of the base (1). A tabletop (5) is fixedly connected to the top of the cabinet (4). A footboard (6) is fixedly connected to the bottom of the base (1). An adjustment mechanism is provided inside the cabinet (4).

2. The easily movable lectern structure according to claim 1, characterized in that: The base (1) has matching grooves and through grooves at corresponding positions on the slide plate (21) and the mounting plate (23), and the slide plate (21) slides inside the matching groove, and the mounting plate (23) passes through the matching through groove.

3. The easily movable lectern structure according to claim 1, characterized in that: A threaded cylinder (25) is rotatably connected to the base (1). An external hexagonal ring (26) is fixedly connected to the outside of the threaded cylinder (25). A threaded rod (27) that drives the universal wheel (24) to rise and fall is threadedly connected inside the threaded cylinder (25). The threaded rod (27) is fixedly connected to the connecting plate (22). A positioning ring (28) is fixedly connected to the outside of the threaded cylinder (25). A ratchet (29) is fixedly connected to the positioning ring (28). A rotating ring (210) is rotatably connected to the positioning ring (28). A positioning seat (211) is fixedly connected inside the rotating ring (210). A pawl (212) is rotatably connected to the positioning seat (211). The pawl (212) contacts the ratchet (29). A first spring (213) is fixedly connected between the pawl (212) and the rotating ring (210). A handle (214) is fixedly connected to the outside of the rotating ring (210).

4. The easily movable lectern structure according to claim 3, characterized in that: Five positioning seats (211) are provided, and the five positioning seats (211) are arranged in a ring array inside the rotating ring (210).

5. The easily movable lectern structure according to claim 1, characterized in that: The adjustment mechanism includes a partition (31) for placing items. The partition (31) is located inside the cabinet (4). A limit plate (32) is slidably connected to the partition (31). A ball (33) is fixedly connected to the outside of the limit plate (32). A second spring (34) is fixedly connected between the limit plate (32) and the partition (31).

6. The easily movable lectern structure according to claim 5, characterized in that: The cabinet (4) has slots that fit the partition (31) from top to bottom, and the partition (31) is engaged in the slots.

7. The easily movable lectern structure according to claim 5, characterized in that: The cabinet (4) has a corresponding hole for the ball (33), and the ball (33) is engaged inside the hole. The partition (31) has a limit hole for the corresponding position of the limiting plate (32) and the ball (33), and the limiting plate (32) and the ball (33) slide inside the limit hole.

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