An artificial Christmas tree

Abstract

The utility model relates to Christmas tree technical field especially a kind of simulation christmas tree, including tree body, lower cover, upper cover, cylinder and three supporting legs, the lower cover, the outer wall of the cylinder and the upper cover are all set up three insertion slots of circumferential array, and U-shaped groove plate is welded in insertion slot, not only can be through the gap gear cooperation rack control supporting leg rotation opening, to be able to according to the height adjustment supporting area of tree body, reduce the area placed and can completely retract supporting leg U-shaped groove plate, reduce storage space, in addition, supporting leg is opened along with the rotation of gap gear, and upper end moves down, so that the lower end of supporting leg is kept unchanged by the lower end of supporting leg upper end moving down to compensate the lower end relative to the upper end rising due to rotation, so that the height of the lower end of supporting leg remains unchanged, will not cause the influence to the height and barycenter of christmas tree, keep stability.

Description

Technical Field

[0001] This utility model relates to the field of Christmas tree technology, and in particular to a simulated Christmas tree. Background Technology

[0002] Christmas trees typically consist of a base and a tree body. The tree body can be made of a real tree or an artificial tree. To ensure a longer lifespan, an artificial tree body is usually used. To prevent the tree from tipping over, the base is usually designed with a large surface area to increase the contact area between the base and the ground. This type of Christmas tree requires a large placement area and storage space. Existing Christmas trees do not allow for adjusting the size of the base area to accommodate different tree heights. An existing application (CN202320964921.4) describes a sawdust artificial Christmas tree, including a base with a tree body… When the base area needs adjustment, a worm gear can be easily rotated to drive a worm wheel, resulting in different angles between the legs and the worm gear. The larger the angle, the more stable the legs are when supporting the tree. However, when rotating the legs to reduce the lower end's surface area, the upper part of the legs and the Christmas tree rise, increasing the height of the Christmas tree and its center of gravity, thus affecting its stability. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies where rotating the legs causes the lower end to shrink inward, reducing the area and causing the upper end and the Christmas tree to rise, increasing the height of the Christmas tree and its center of gravity and affecting its stability. Therefore, this invention proposes a simulated Christmas tree.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Design a simulated Christmas tree, including a tree trunk, a lower cover, an upper cover, a cylindrical body, and three legs. The outer walls of the lower cover, the cylindrical body, and the upper cover are each provided with three slots arranged in a circular array, and U-shaped groove plates are welded into the slots. Limiting grooves are provided on both inner walls of the U-shaped groove plates, and sliders controlled by a lifting device are provided in the limiting grooves. A lifting shaft is fixed between a pair of sliders, and a notched gear located in the U-shaped groove plate is sleeved on the outer wall of the lifting shaft. A rack that meshes with the notched gear is fixed on the inner wall of the U-shaped groove plate, and legs are welded to the inner wall of the notch of the notched gear.

[0006] Preferably, the lifting device includes a lifting plate, a screw, and a drive shaft. The lifting plate is vertically mounted between the lower cover and the upper cover via a guide device. The outer wall of the lifting plate has three grooves on which three U-shaped grooves are slidably mounted. The inner wall of each groove is fixedly connected to two sliders in the corresponding limiting grooves on the U-shaped groove. A screw is rotatably mounted between the lower cover and the upper cover, penetrating the lifting plate. The outer wall of the screw is threadedly connected to the lifting plate. The top of the upper cover has a through hole, and a drive shaft with its upper end connected to a manual drive device is rotatably mounted in the through hole via a bearing seat. The lower end of the drive shaft is connected to the drive shaft via a transmission device.

[0007] Preferably, the transmission device includes a second gear and a third gear. The bottom of the upper cover is rotatably mounted with the second gear via a short shaft. The lower end of the drive shaft is fixed with a connecting gear that rotates the top cover, and the gear meshes with the second gear. The upper end of the screw is fixed with a third gear, and the third gear meshes with the second gear.

[0008] Preferably, the manual drive device includes a handwheel and a handle. The handwheel is fixedly mounted on the upper end of the drive shaft, and the bottom of the handwheel is rotatably connected to the upper cover. The handwheel has an insertion hole, and the handle is rotatably mounted in the insertion hole through a bearing seat.

[0009] Preferably, the guiding device includes three columns, and three columns arranged in a circular array are fixed between the upper cover and the lower cover, with the columns passing through and slidably connected to the lifting plate.

[0010] Preferably, the lower end of the support leg has a rounded corner to reduce friction and prevent jamming.

[0011] Preferably, the installation structure includes a hexagonal mounting tube, fastening screws, and threaded holes. The top of the upper cover is fixed with a hexagonal mounting tube, and the trunk of the tree is inserted into the interior of the hexagonal mounting tube. Threaded holes are opened through the three outer planes of the hexagonal mounting tube that do not contact the U-shaped groove plate, and fastening screws that abut against the trunk of the tree are connected to the internal threads of the threads.

[0012] The present invention proposes a simulated Christmas tree with the following advantages: not only can the legs be rotated and opened by a liftable notched gear in conjunction with a rack, thereby adjusting the support area according to the height of the tree and reducing the placement area, but the legs can also be completely retracted into the U-shaped groove plate, reducing storage space. In addition, as the notched gear rotates and opens, the upper end of the legs moves downward, thereby compensating for the rise of the lower end relative to the upper end caused by the rotation, so that the height of the lower end of the legs remains unchanged, without affecting the height and center of gravity of the Christmas tree, thus maintaining stability. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the structure of a simulated Christmas tree proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of a simulated Christmas tree proposed in this utility model;

[0015] Figure 3 This is an enlarged view of area A of a simulated Christmas tree proposed in this utility model;

[0016] Figure 4 This is a schematic diagram of the transmission device structure for a simulated Christmas tree proposed in this utility model;

[0017] Figure 5 This is a schematic diagram of the support structure for a simulated Christmas tree proposed in this utility model.

[0018] In the diagram: 1. Lower cover; 2. Upper cover; 3. Handwheel; 4. Drive shaft; 5. U-shaped groove plate; 6. Rack; 7. Tree trunk; 8. Hexagonal mounting tube; 9. Lifting shaft; 10. Slider; 11. Notched gear; 12. Support leg; 13. Limiting groove; 14. Cylinder; 15. Second gear; 16. Lifting plate; 17. Column; 18. Screw; 19. Third gear. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-5 A simulated Christmas tree includes a tree trunk 7, a lower cover 1, an upper cover 2, a cylindrical body 14, and three support legs 12. The outer walls of the lower cover 1, the cylindrical body 14, and the upper cover 2 are each provided with three slots arranged in a circular array, and U-shaped groove plates 5 are welded into the slots. Limiting grooves 13 are provided on the inner walls of both sides of the U-shaped groove plates 5, and sliders 10 controlled by a lifting device are provided in the limiting grooves 13. A lifting shaft 9 is fixed between a pair of sliders 10, and a notched gear 11 located in the U-shaped groove plate 5 is sleeved on the outer wall of the lifting shaft 9. A rack 6 that meshes with the notched gear 11 is fixed on the inner wall of the U-shaped groove plate 5, and support legs 12 are welded to the inner wall of the notch of the notched gear 11.

[0021] Reference Figure 2-4In order to control the lifting of the lifting plate 16, the lifting device includes the lifting plate 16, the screw 18, and the drive shaft 4. The lifting plate 16 is raised and lowered between the lower cover 1 and the upper cover 2 through the guide device. The outer wall of the lifting plate 16 is provided with three sliding grooves, each with three U-shaped groove plates 5 that are slidably arranged inside. The inner wall of each groove is fixedly connected to the slider 10 in the two limiting grooves 13 on the corresponding U-shaped groove plate 5. The screw 18 is rotatably arranged between the lower cover 1 and the upper cover 2, passing through the lifting plate 16. The outer wall of the screw 18 is threadedly connected to the lifting plate 16. The top of the upper cover 2 is provided with a through hole, and the drive shaft 4, which is connected to the manual drive device at the upper end, is rotatably arranged in the through hole through the bearing seat. The lower end of the drive shaft 4 is connected to the drive shaft 4 through the transmission device.

[0022] Reference Figure 1-4 In order to enable the drive shaft 4 to rotate, the transmission device includes a second gear 15 and a third gear 19. The bottom of the upper cover 2 is rotatably mounted with the second gear 15 via a short shaft. The lower end of the drive shaft 4 is fixed with a connecting gear that rotates the top cover 2, and the gear meshes with the second gear 15. The upper end of the screw 18 is fixed with the third gear 19, and the third gear 19 meshes with the second gear 15.

[0023] Reference Figure 1 To facilitate the rotation of the drive shaft 4 by hand, the manual drive device includes a handwheel 3 and a handle. The upper end of the drive shaft 4 is fixedly equipped with the handwheel 3, and the bottom of the handwheel 3 is rotatably connected to the upper cover 2. The handwheel 3 has an insertion hole, and the handle is rotatably installed in the insertion hole through a bearing seat.

[0024] Reference Figure 2-4 In order to ensure that the lifting plate 16 can only rise and fall and cooperate with the screw 18 so that the rotating screw 18 can make the lifting plate 16 rise and fall, the guide device includes three columns 17. Three columns 17 arranged in a circular array are fixed between the upper cover 2 and the lower cover 1, and the columns 17 pass through and slide to connect the lifting plate 16.

[0025] Reference Figure 2-5 To make it easier to adjust when placing the leg, the lower end of the support leg 12 is provided with rounded corners to reduce friction and prevent jamming.

[0026] Reference Figure 1 To fix the tree trunk 7, the installation structure includes a hexagonal mounting tube 8, fastening screws, and threaded holes. The top of the cover 2 is fixed with a hexagonal mounting tube 8, and the trunk of the tree trunk 7 is inserted into the inside of the hexagonal mounting tube 8. Threaded holes are opened through the three outer planes of the hexagonal mounting tube 8 that do not contact the U-shaped groove plate 5, and fastening screws that abut against the trunk of the tree trunk 7 are connected to the internal threads.

[0027] Working principle: The handwheel 3 is rotated by the handle, which drives the drive shaft 4 to rotate. The drive shaft 4 drives the screw 18 to rotate through the second gear 15 and the third gear 19, thereby driving the lifting plate 16 to rise and fall. The lifting plate 16 drives the slider 10, the lifting shaft 9 and the notched gear 11 to rise and fall. The lifting notched gear 11 rises and falls and rotates on the rack 6 of the ancient road, so that the upper end of the support leg 12 moves down as the notched gear 11 rotates and opens. The downward movement of the upper end of the support leg 12 compensates for the rise of the lower end relative to the upper end caused by the rotation, so that the height of the lower end of the support leg 12 remains unchanged.

[0028] Not only can the adjustable notch gear 11, in conjunction with the rack 6, control the rotation and opening of the support leg 12, thereby adjusting the support area according to the height of the tree trunk 7, reducing the placement area, but it can also completely retract the support leg 12 into the U-shaped slot plate 5, reducing storage space. Furthermore, as the notch gear 11 rotates and opens, the upper end of the support leg 12 moves downward, thereby compensating for the rise of the lower end relative to the upper end caused by the rotation. This ensures that the lower end of the support leg 12 remains at a constant height, without affecting the height and center of gravity of the Christmas tree, thus maintaining stability.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A simulated Christmas tree, comprising a trunk (7), a lower cover (1), an upper cover (2), a cylindrical body (14), and three legs (12), characterized in that, The lower cover (1), the cylinder (14) and the upper cover (2) are each provided with three slots arranged in a circular array on their outer walls, and U-shaped groove plates (5) are welded in the slots. Limiting grooves (13) are provided on both sides of the inner walls of the U-shaped groove plates (5), and sliders (10) controlled by the lifting device are provided in the limiting grooves (13). A lifting shaft (9) is fixed between a pair of sliders (10), and a notched gear (11) located in the U-shaped groove plates (5) is sleeved on the outer wall of the lifting shaft (9). A rack (6) that meshes with the notched gear (11) is fixed on the inner wall of the U-shaped groove plates (5), and a support leg (12) is welded on the inner wall of the notch of the notched gear (11).

2. The simulated Christmas tree according to claim 1, characterized in that, The lifting device includes a lifting plate (16), a screw (18), and a drive shaft (4). The lifting plate (16) is raised and lowered between the lower cover (1) and the upper cover (2) through a guide device. The outer wall of the lifting plate (16) is provided with three sliding grooves in which three U-shaped groove plates (5) are slidably arranged. The inner wall of each groove is fixedly connected to the slider (10) in the two limiting grooves (13) on the corresponding U-shaped groove plate (5). The screw (18) is rotatably arranged between the lower cover (1) and the upper cover (2) and passes through the lifting plate (16). The outer wall of the screw (18) is threadedly connected to the lifting plate (16). The top of the upper cover (2) is provided with a through hole. The drive shaft (4) is rotatably arranged in the through hole through a bearing seat. The lower end of the drive shaft (4) is connected to the drive shaft (4) through a transmission device.

3. A simulated Christmas tree according to claim 2, characterized in that, The transmission device includes a second gear (15) and a third gear (19). The bottom of the upper cover (2) is rotatably mounted with the second gear (15) via a short shaft. The lower end of the drive shaft (4) is fixed with a connecting gear for rotating the top cover (2), and the gear meshes with the second gear (15). The upper end of the screw (18) is fixed with the third gear (19), and the third gear (19) meshes with the second gear (15).

4. A simulated Christmas tree according to claim 2, characterized in that, The manual drive device includes a handwheel (3) and a handle. The upper end of the drive shaft (4) is fixed with the handwheel (3), and the bottom of the handwheel (3) is rotatably connected to the cover (2). The handwheel (3) has an insertion hole, and the handle is rotatably installed in the insertion hole through a bearing seat.

5. A simulated Christmas tree according to claim 2, characterized in that, The guiding device includes three columns (17). Three columns (17) arranged in a circular array are fixed between the upper cover (2) and the lower cover (1), and the columns (17) pass through and are slidably connected to the lifting plate (16).

6. A simulated Christmas tree according to claim 1, characterized in that, The lower end of the support leg (12) is provided with a rounded corner to reduce friction and prevent jamming.

7. A simulated Christmas tree according to claim 1, characterized in that, It also includes an installation structure, which includes a hexagonal installation tube (8), fastening screws, and threaded holes. The top of the cover (2) is fixed with a hexagonal installation tube (8), and the trunk of the tree body (7) is inserted into the inside of the hexagonal installation tube (8). Threaded holes are opened through the three outer planes of the hexagonal installation tube (8) that do not contact the U-shaped groove plate (5), and fastening screws that abut against the trunk of the tree body (7) are connected to the internal threads of the threads.

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