A Christmas tree connection structure

Abstract

This invention discloses a Christmas tree connection structure, including a main rod, which is composed of at least two connecting rods. Each connecting rod has a first end and a second end. The outer peripheral wall of the first end is provided with a snap-fit ​​component, and the end of the second end is fitted with a plastic component. The snap-fit ​​component is snapped into the plastic component. The connecting rod also includes a constricted portion, which has a male end and the second end has a female end. The constricted portion is inserted into the second end so that the male end and the female end can be inserted and connected. The connecting rod has a plurality of umbrella sleeves spaced apart along the axial direction. Each umbrella sleeve includes a connecting portion, which is pressed and fixed to the outer peripheral wall of the connecting rod by a plastic deformation process. The invention also includes a base connected to the main rod. The base includes at least two vertically corresponding and cross-connected connecting rods. Each connecting rod includes a fixing component and a sliding component. The sliding component is slidably connected to the fixing component and can slide back and forth along the axial direction of the fixing component to change the overall length of the connecting rod, thereby adapting to Christmas trees of different sizes.

Description

Technical Field

[0001] This invention belongs to the field of Christmas tree structure decoration, and specifically relates to a Christmas tree connection structure. Background Technology

[0002] In actual production, the structure and convenience of Christmas trees, as an important holiday decoration, have always been a focus of attention. In existing technologies, for ease of transportation and storage, the main pole of a Christmas tree usually adopts a segmented connecting rod structure. The connecting rods are mechanically connected by threads or simple snap-fits. Traditional Christmas trees have umbrella sleeves on the connecting rods for hinged branches. The umbrella sleeves are mostly fixed to the outer periphery of the connecting rod by welding or direct interference fit. However, if the pressing process is not properly controlled, it is very easy to cause local radial deformation of the connecting rod, which in turn squeezes the electrical components installed inside the connecting rod, causing problems such as terminal deformation, insulation damage or poor contact. In severe cases, it may even cause electrical components to jam and become impossible to disassemble and repair.

[0003] Meanwhile, existing Christmas tree bases are mostly of fixed size, unable to accommodate main poles of different diameters or heights. Users need to frequently replace the bases according to the Christmas tree's specifications, increasing usage costs and occupying additional storage space. Furthermore, traditional bases lack length adjustment, making it difficult to balance the compactness of small Christmas trees with the anti-tipping stability of large ones. Therefore, there is an urgent need for a Christmas tree connection structure that can simultaneously address the aforementioned issues of mechanical connection reliability, electrical protection, base versatility, and ease of adjustment. Summary of the Invention

[0004] (1) Technical problems to be solved This invention discloses a Christmas tree connection structure, which aims to solve the problems in existing Christmas trees where the umbrella cover pressing easily causes deformation and damage to the connecting rods and internal electrical components, and the base cannot be adapted to Christmas trees of different specifications.

[0005] (2) Technical solution This invention discloses a Christmas tree connection structure, including a main rod composed of at least two connecting rods. Each connecting rod has a first end and a second end. A snap-fit ​​element is provided on the outer peripheral wall of the first end, and a plastic part is fitted onto the end of the second end. The snap-fit ​​element is snap-fitted into the plastic part. Each connecting rod also includes a constricted portion, which has a male end and the second end has a female end. The male end has a pointed tip, and the female end has an opening and a spring. The spring is used to press the female end close to the pointed tip of the male end. Thus, the constricted portion is inserted into the second end of another connecting rod, allowing the male and female ends to interlock and conduct. The pointed tip is inserted into the opening, enabling the connecting rod to form electrical contact at any radially uniform circumferential position. The constricted portion is inserted into the second end, allowing the male and female ends to interlock and conduct. The connecting rod is provided with a plurality of umbrella sleeves spaced apart along the axial direction. Each umbrella sleeve includes a connecting part, which is pressed and fixed to the outer peripheral wall of the connecting rod by a plastic deformation process. It also includes a base connected to the main rod, the base including at least two cross-connected connecting rods, the connecting rod including a fixing member and a sliding member, the sliding member being slidably connected to the fixing member and being able to slide back and forth along the axial direction of the fixing member to change the overall length of the connecting rod, thereby adapting to Christmas trees of different sizes.

[0006] Furthermore, the connecting rod is provided with a connector, the connector is provided with a mounting hole, and the main rod is disposed in the mounting hole.

[0007] Furthermore, a limiting block is provided at the lower end of the mounting hole, which is used to prevent the main rod from passing through the lower end of the mounting hole.

[0008] Furthermore, the fixed member is provided with the sliding member at both ends, and a limiting component is provided between the sliding member and the fixed member. The limiting component is used to limit the maximum extension position and the minimum retraction position of the sliding member relative to the fixed member.

[0009] Furthermore, the limiting component includes an elongated groove formed on the sliding member and a limiting step disposed at the end of the fixing member and extending into the elongated groove. The two ends of the elongated groove respectively abut against the limiting step to achieve bidirectional travel limiting.

[0010] Furthermore, the plastic part has an inner step, and the second end face of the connecting rod abuts against the inner step to axially limit the plastic part.

[0011] Furthermore, the snap-fit ​​component is fixed to the connecting rod by a fastener. The snap-fit ​​component includes a snap-fit ​​part, and the plastic part is provided with a snap-fit ​​groove. The snap-fit ​​part is inserted into the snap-fit ​​groove to snap and fix the plastic part and the snap-fit ​​component together.

[0012] Furthermore, a second fastener is provided at the bottom of the connecting part of the umbrella cover. The second fastener is fixedly connected to the connecting rod to fix the female end inside the second end and to form an axial abutment against the umbrella cover.

[0013] Furthermore, the umbrella cover also includes a connecting frame, which is fixed on the connecting part and distributed in a ring around the outer periphery of the connecting part. The connecting frame is provided with a receiving groove, and one end of the branch is rotatably connected to the receiving groove.

[0014] Furthermore, the plastic part is provided with a protrusion, and the second end of the connecting rod is provided with a connecting groove. The protrusion is embedded in the connecting groove to restrict the relative rotation between the plastic part and the connecting rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By using a controllable plastic deformation process to press and fix the connecting part of the umbrella cover to the outer periphery of the connecting rod, and strictly controlling the pressing force and deformation, the problem of radial deformation of the connecting rod caused by excessive local extrusion pressure, which in turn damages the female end, is solved in the existing technology. This ensures that the umbrella cover does not loosen or rotate during long-term use, while effectively protecting the structural integrity and assembly disassembly of the female end, improving the reliability of the connection structure and reducing maintenance costs.

[0016] 2. The axial extension of the constricted section increases the mating area of ​​adjacent connecting rods, significantly improving the bending strength at the connection of adjacent connecting rods and ensuring the overall stability of the Christmas tree main pole when it is erected.

[0017] 3. By setting the connecting rod of the base as a structure in which the fixed part and the sliding part are slidably connected, and opening a long groove on the sliding part, and integrally bending a limiting step at the end of the fixed part, the problem of the existing base being a fixed size and unable to adapt to Christmas trees of different specifications, as well as the problem of the sliding part being easy to fall off or get stuck, is solved by using the first abutment surface and the second abutment surface at both ends of the long groove to cooperate with the limiting step in a two-way limiting action. This achieves the goal of one base adapting to Christmas trees of multiple sizes without frequent replacement, reducing user procurement costs and storage space. At the same time, the sliding stroke of the sliding part is limited to a preset range, making operation simple and taking into account both the compactness of small trees and the anti-tipping ability of large trees.

[0018] 4. By setting an inner step in the inner cavity of the plastic part, the problem of existing plastic parts relying solely on their inner diameter to fit the connecting rod and sliding down the outer wall of the connecting rod due to friction and aging after long-term use is solved. This achieves axial stop and limit of the plastic part, ensuring that it continuously and completely covers the second end of the connecting rod, preventing the metal connecting rod from being exposed, and ensuring the long-term stability of the connection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main rod structure of the present invention.

[0020] Figure 2 This is an exploded schematic diagram of the linkage connection of the present invention.

[0021] Figure 3 This is a schematic diagram of the linkage structure of the present invention. Figure 1 .

[0022] Figure 4 This is a schematic diagram of the linkage structure of the present invention. Figure 2 .

[0023] Figure 5 This is a schematic diagram of the plastic part and the female end structure of the present invention.

[0024] Figure 6 This is a cross-sectional view showing the connection between the male and female ends of the present invention.

[0025] Figure 7 This is a schematic diagram of the connection between the umbrella cover and the branch according to the present invention.

[0026] Figure 8 This is a schematic diagram showing the connection between the base of the present invention and the Christmas tree.

[0027] Figure 9 This is a schematic diagram showing the connection between the base and the main rod of the present invention.

[0028] Figure 10 This is a front view of the base of the present invention.

[0029] Figure 11 This is a schematic diagram of the front of the base for storage according to the present invention.

[0030] Figure 12 This is a schematic diagram of the reverse side of the base of the present invention.

[0031] Figure 13 This is a schematic diagram of the base elongated groove structure of the present invention.

[0032] Figure 14 This is a schematic diagram of the limiting block structure of the base of the present invention.

[0033] Figure 15 This is a schematic diagram of the umbrella cover structure of the present invention.

[0034] Figure 16 This is a schematic diagram of the hinged connection between the branch and the umbrella cover according to the present invention.

[0035] Figure 17 This is a schematic diagram of the interlaced umbrella cover of the present invention.

[0036] Figure 18 This is a schematic diagram of the plastic part structure of the present invention.

[0037] Figure 19 This is an exploded view of the plastic part and the snap-fit ​​part of the present invention.

[0038] Figure 20 This is a schematic diagram showing the connection state between the plastic part and the snap-fit ​​part of the present invention.

[0039] Figure 21 This is a schematic diagram of the connection between the light string and the branch according to the present invention.

[0040] Reference numerals: 1-Connecting rod, 11-First end, 12-Second end, 13-Recessed end, 14-Connecting groove, 15-Socket one, 2-Snap-fit ​​part, 21-Snap-fit ​​part, 22-Fastener one, 3-Plastic part, 31-Inner step, 32-Snap-fit ​​groove, 33-Protrusion, 4-Male end, 41-Tip, 5-Female end, 51-Opening, 52-Spring, 6-Umbrella cover, 61-Connecting part, 62-Connecting frame, 621-Container 63-Fixing ring, 64-Fastener II, 7-Branch, 71-Light string, 711-Light body, 72-Plug I, 8-Base, 81-Connecting rod, 82-Limiting block, 83-Connector, 831-Mounting hole, 84-Fixing component, 841-Limiting step, 85-Sliding component, 851-Long groove, 8511-First abutting surface, 8512-Second abutting surface, 852-Protruding column, 86-Pulley, 9-Main rod. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] like Figure 1-6 As shown, the present invention discloses a Christmas tree connection structure, including a main rod 9, which is formed by connecting several connecting rods 1 vertically. Each connecting rod 1 includes a first end 11 and a second end 12. A snap-fit ​​member 2 is provided on the outer peripheral wall of the first end 11, and a plastic part 3 is sleeved on the end of the second end 12. The snap-fit ​​member 2 and the plastic part 3 are snapped together. The connecting rod 1 also includes a constricted portion 13, which is the portion of the snap-fit ​​member 2 to the end of the first end 11 away from the second end 12. A male end 4 is provided in the constricted portion 13, and a female end 5 is provided in the second end 12. The male end 4 includes a tip 41, and the female end 5 includes an opening 51 and a spring 52. The spring 52 is used to press the female end 5 close to the tip 41 of the male end 4. Thus, the constricted portion 13 is inserted into the second end 12 of another connecting rod 1, so that the male end 4 and the female end 5 are connected by insertion. The tip 41 is inserted into the opening 51, and the connecting rod 1 can form electrical contact at any position in its radially uniform circumferential direction. During assembly, the constricted portion 13 is inserted into the second end 12, so that the male end 4 and the female end 5 are connected by insertion. At the same time, the snap-fit ​​member 2 is snapped into the plastic part 3, thereby realizing the quick fixation and electrical connection of each connecting rod 1.

[0043] Furthermore, in existing designs, the axial length of the constricted portion 13 is generally too short. When two adjacent connecting rods 1 are joined, the fitting length of the constricted portion 13 inserted into the second end 12 is limited, and the contact area between them is small, resulting in poor bending strength and structural stability at the connection point, making it difficult to guarantee the overall rigidity of the main rod 9 when it is erected. Therefore, this application extends the axial length of the constricted portion 13, and the diameter of the constricted portion 13 is smaller than the diameter of the connecting rod 1. Through this diameter reduction structure of the constricted portion 13, on the one hand, the constricted portion 13 can be smoothly inserted into the second end 12, and the insertion guide distance between the male end 4 and the female end 5 is extended, improving the alignment accuracy and electrical contact stability; the axial extension design of the constricted portion 13 increases the fitting area with the inner wall of the second end 12, thereby improving the bending strength and structural stability at the connection point of two adjacent connecting rods 1, and ensuring the overall rigidity of the Christmas tree main rod 9 in the erected state.

[0044] Specifically, such as Figure 3 and Figure 7 As shown, multiple umbrella sleeves 6 are arranged axially at intervals on the connecting rod 1. Each umbrella sleeve 6 includes a connecting part 61. Each umbrella sleeve 6 is used to hinge branches 7 to achieve detachable installation of the Christmas tree branch structure. Since the female end 5 is located inside the second end 12 and the axial extension length of the female end 5 from the end of the second end 12 is relatively long, at least one umbrella sleeve 6 is inevitably required on the connecting rod 1 corresponding to the installation area of ​​the female end 5. To avoid radial deformation of the connecting rod 1 due to excessive local extrusion pressure when pressing the connecting part 61, which would lead to the following problems: on the one hand, deformation would squeeze the internal female end 5, causing damage such as terminal deformation, insulation damage, or poor contact of the female end 5; on the other hand, even if the female end 5 is not directly damaged, the deformation of the connecting rod 1 may cause the female end 5 to get stuck inside the second end 12, making it impossible to remove it smoothly during subsequent maintenance or replacement.

[0045] Therefore, in this embodiment, the connecting part 61 is pressed and fixed to the outer peripheral wall of the connecting rod 1 by a plastic deformation process. The connecting part 61 adopts a controllable plastic deformation process, and the pressing force and deformation are strictly controlled. The inner diameter of the connecting part 61 is smaller than the outer diameter of the connecting rod 1. The connecting part 61 undergoes radial shrinkage after pressing. An interference fit is formed between the connecting part 61 and the connecting rod 1 to achieve axial and circumferential fixation, so that a stable connection is formed between the connecting part 61 and the connecting rod 1, while ensuring that the original roundness and inner cavity size of the connecting rod 1 do not change significantly.

[0046] The above structure ensures that the umbrella cover 6 will not loosen or rotate during long-term use, and effectively protects the structural integrity and assembly disassembly of the female end 5. This significantly improves the reliability of the connection structure, reduces maintenance costs, and ensures the convenience and service life of the Christmas tree assembly.

[0047] Furthermore, in existing designs, the base 8 of the Christmas tree is typically a fixed-size structure, unable to accommodate Christmas tree poles of different diameters or heights. This forces users to frequently replace the base 8 for different Christmas tree sizes, increasing usage costs and consuming additional storage space. To address this issue, such as... Figure 8-10 As shown, this application also includes a base 8 connected to the bottom end of the main rod 9. The base 8 includes at least two connecting rods 81. Each connecting rod 81 includes a fixing member 84 and a sliding member 85. The sliding member 85 is slidably connected to the fixing member 84 and can slide back and forth along the axial direction of the fixing member 84 to change the overall length of the connecting rod 81, thereby adapting to Christmas trees of different sizes.

[0048] Specifically, the base 8 includes two connecting rods 81 arranged vertically and cross-connected. A connector 83 is provided in the middle of the two connecting rods 81 to connect the two connecting rods 81. The two ends of the connector 83 protrude from the outer end faces of the two connecting rods 81 respectively. The connector 83 is provided with a mounting hole 831. The inner diameter of the mounting hole 831 is adapted to the outer diameter of the connecting rod 1. The connecting rod 1 at the bottom of the main rod 9 passes through and is fixed in the mounting hole 831 to achieve a stable connection between the base 8 and the main rod 9.

[0049] Furthermore, such as Figure 10-11 As shown, each of the connecting rods 81 includes a fixing member 84 and two sliding members 85. The two sliding members 85 are slidably connected to both ends of the fixing member 84. By moving the sliding members 85 outward or inward along the longitudinal direction of the fixing member 84, the overall length of each connecting rod 81 can be changed. A limiting component is provided between the sliding member 85 and the fixing member 84. The limiting component is used to limit the maximum extended position and the minimum retracted position of the sliding member 85 relative to the fixing member 84.

[0050] In the retracted state, the slider 85 is folded into the fixing member 84, and the base 8 occupies a small area, which can meet the support needs of small Christmas trees; in the extended state, the slider 85 is slid outward, and the length of the connecting rod 81 is increased accordingly, thereby increasing the support span of the base 8 and being able to stably support larger Christmas trees.

[0051] The adjustable structure of the base 8 allows one base 8 to accommodate various Christmas trees of different sizes, eliminating the need for frequent replacements and significantly reducing user procurement costs and storage space. Furthermore, the support length of the base 8 can be flexibly adjusted according to the actual tree size, ensuring both compactness for small Christmas trees and anti-tipping stability for large ones, thus improving the overall safety and ease of use of the Christmas tree. Simultaneously, the sliding engagement structure between the sliding component 85 and the fixing component 84 is simple, reliable, and easy to operate, facilitating quick installation and disassembly of the Christmas tree.

[0052] It should be noted that when the length of the connecting rod 81 is set to the length required by the user, the sliding member 85 and the fixing member 84 can be locked and fixed by screws or other fasteners.

[0053] Specifically, such as Figure 12-13 As shown, the limiting component includes a sliding member 85 with an elongated groove 851 along its length, the two ends of which form a first abutment surface 8511 and a second abutment surface 8512, respectively; the two ends of the fixing member 84 are integrally bent vertically upward to form limiting steps 841, which extend into the elongated groove 851 of the corresponding sliding member 85. The sliding member 85 is sleeved on the outside of the fixing member 84 and can slide back and forth along the axial direction of the fixing member 84 to realize the length adjustment of the connecting rod 81. In use, when the sliding member 85 is pulled outward to move away from the center of the fixing member 84, the first abutting surface 8511 in the elongated groove 851 moves outward synchronously with the sliding member 85 until it abuts against one side wall of the limiting step 841. The limiting step 841 prevents the sliding member 85 from sliding outward further, preventing it from falling off the end of the fixing member 84, thereby locking the maximum support length of the connecting rod 81. When the sliding member 85 is pulled inward to move closer to the center of the fixing member 84, the second abutting surface 8512 in the elongated groove 851 moves inward synchronously with the sliding member 85 until it abuts against one side wall of the limiting step 841. The sliding member 85 is abutted against the other side wall of the limiting step 841, which prevents the sliding member 85 from sliding inward and avoids excessive retraction that could cause the structure to jam. This locks the minimum retracted length of the connecting rod 81. Through the two sets of abutting surfaces at both ends of the long groove 851 and the bidirectional limiting cooperation of the limiting step 841, the sliding stroke of the sliding member 85 is limited to a preset range. The length of the connecting rod 81 can be stably adjusted between the maximum and minimum support positions. It can adapt to Christmas trees of different sizes without the need for additional locking parts. The structure is simple and the operation is reliable.

[0054] Furthermore, such as Figure 12As shown, to reduce the frictional resistance when the sliding member 85 extends or retracts and to facilitate the overall movement of the Christmas tree, a pulley 86 is fitted at the bottom of the sliding member 85, with the bottom end of the pulley 86 in contact with the ground. When the length of the connecting rod 81 is adjusted by pulling the sliding member 85, the pulley 86 rolls along the ground, significantly reducing the sliding friction between the sliding member 85 and the ground, making the operation more effortless; at the same time, the entire Christmas tree base 8 can be moved as a whole with the help of the pulleys 86, making it convenient and flexible to adjust the placement position.

[0055] Since the two connecting rods 81 are connected in a cross shape corresponding to each other, the connecting rod 81 located above the connecting rod 81 and the connecting rod 81 located below the connecting rod 81 are staggered in the height direction. In order to make the two rods have the same height, protruding posts 852 are provided on both ends of the sliding member 85 of the connecting rod 81. In order to ensure that the bottom surfaces of the pulleys 86 on the two connecting rods 81 are located on the same horizontal plane and that each pulley 86 can touch the ground, protruding posts 852 are provided at both ends of the sliding member 85 of the connecting rod 81 located below the connecting rod 81. The pulleys 86 are installed on the protruding posts 852 to compensate for the height difference caused by the staggered position of the two connecting rods 81.

[0056] like Figure 14 As shown, the connector 83 has a mounting hole 831 for mounting the main rod 9. A limiting block 82 is provided at the lower end of the mounting hole 831 near the pulley 86. The limiting block 82 protrudes inward, making the lower diameter of the mounting hole 831 smaller than the upper diameter. When the main rod 9 is inserted through the upper end of the mounting hole 831, its bottom end face abuts against the limiting block 82. The limiting block 82 forms a rigid block, restricting the main rod 9 from continuing to move downward, effectively preventing the main rod 9 from exiting through the lower end of the mounting hole 831 and touching the ground, avoiding scratching the ground or damage caused by dragging the main rod 9. At the same time, it prevents the bracket from tipping over due to force displacement, ensuring safe use.

[0057] Specifically, such as Figure 7 and Figure 15 As shown, the umbrella cover 6 also includes a connecting frame 62, which is fixed to the connecting part 61 and arranged in a circular array along the outer periphery of the connecting part 61. This circular layout makes the overall structure compact, saves space, and facilitates transportation and assembly. The connecting frame 62 is provided with a receiving groove 621, and one end of the branch 7 is placed in the receiving groove 621 and can rotate around its axis, so as to flexibly adjust the angle and direction of the branch 7 according to the decoration requirements. At the same time, it can be rotated and folded when stored to reduce the space occupied.

[0058] Preferably, such as Figure 16As shown, the extension line L1 of the receiving groove 621 extends obliquely upwards towards the connecting rod 1, and the extension line L1 forms an angle A with the central axis L2 of the connecting rod 1, the angle A being 30° to 60°. With this angle setting, the branches 7, after installation, exhibit an upward-sloping extension posture, simulating the natural growth form of real coniferous plants, making the overall shape of the Christmas tree more aesthetically pleasing, layered, and vibrant.

[0059] In addition, such as Figure 15-16 As shown, after the branch 7 is placed in the receiving groove 621, it will exert downward pressure on the connecting frame 62 under the action of gravity. With long-term use, the connecting frame 62 is prone to bending and deforming downward, affecting the fixing angle of the branch 7 and the overall decorative effect. To this end, the umbrella cover 6 is also provided with a fixing ring 63, which is fixedly connected to all the connecting frames 62, thereby forming circumferential constraints and support for each connecting frame 62, effectively enhancing the bending strength of the connecting frame 62, ensuring the stability of the fixing angle of the branch 7, and ensuring the consistency of the Christmas tree's appearance.

[0060] Preferably, such as Figure 17 As shown, the two umbrella covers 6 are arranged vertically and vertically along the axial direction of the connecting rod 1, and the two umbrella covers 6 are fixedly connected by screws to ensure that their relative positions in the axial direction are fixed, enhance the connection stability, and prevent movement or misalignment during use or transportation; at the same time, the connecting frames 62 on the two umbrella covers 6 are staggered in the circumferential direction, so that the upper and lower branches 7 are staggered after unfolding, avoiding overlapping and interference of branches and leaves, thereby achieving uniform coverage of branches 7 in the circumferential direction, making the overall shape of the Christmas tree fuller and more natural.

[0061] like Figure 17 As shown, the bottom of the connecting part 61 of the umbrella cover 6 is provided with a second fastener 64, which is fixedly connected to the connecting rod 1. The second fastener 64 presses and fixes the female end 5 located in the second end 12 to prevent the female end 5 from moving axially during insertion and removal; on the other hand, it plays an axial locking role for the umbrella cover 6, preventing the umbrella cover 6 from sliding axially on the connecting rod 1, ensuring that the preset spacing between each umbrella cover 6 remains unchanged, thereby ensuring the uniform distribution of branches 7.

[0062] like Figure 18As shown, this application provides an inner step 31 within the cavity of the plastic part 3. The inner step 31 is a protruding structure protruding inward from the inside of the plastic part 3. The plastic part 3 is hollow and fits onto the outside of the second end 12 of the connecting rod 1. After assembly, the end face of the second end 12 of the connecting rod 1 abuts against the inner step 31. Compared with the existing plastic part 3 that only relies on its inner diameter to fit the connecting rod, this solution forms an axial stop and limit through the integrally formed inner step 31. Even if the plastic part 3 ages due to friction after long-term use, it will not slide down along the outer wall of the connecting rod 1 and can continuously and completely cover the end of the second end 12 of the connecting rod 1, preventing the metal connecting rod from being exposed. At the same time, the assembly position of the plastic part 3 is precisely fixed by the inner step 31, which can continuously achieve precise alignment and snapping with the snap-fit ​​part 2, preventing snap-fit ​​misalignment and structural loosening failure caused by displacement of the plastic part 3, and ensuring the long-term stability of the connection.

[0063] like Figures 19-20 As shown, the snap-fit ​​component 2 includes a snap-fit ​​portion 21, and the plastic part 3 has a snap-fit ​​groove 32 that conforms to the shape of the snap-fit ​​portion 21. When the first end 11 of the connecting rod 1 is connected to the second end 12 of another connecting rod 1, the snap-fit ​​portion 21 is inserted into the snap-fit ​​groove 32 and locked in place. The snap-fit ​​component 2 is fixed to the first end 11 of the connecting rod 1 by a fastener 22 (such as a screw) to ensure that the snap-fit ​​component 2 does not loosen or shift during repeated insertion and removal.

[0064] In addition, such as Figure 18 and Figure 20 As shown, the plastic part 3 has an inwardly protruding protrusion 33, and the second end 12 of the connecting rod 1 has a connecting groove 14 that matches the shape of the protrusion 33. The protrusion 33 is embedded in the connecting groove 14. Through the fitting and cooperation of the protrusion 33 and the connecting groove 14, relative rotation of the plastic part 3 around the axis of the connecting rod 1 can be prevented, ensuring that the snap-fit ​​groove 32 on the plastic part 3 always maintains circumferential alignment with the snap-fit ​​part 21 of the snap-fit ​​part 2, further improving the convenience and reliability of insertion and alignment.

[0065] like Figure 4 and Figure 21 As shown, a string of lights 71 is wrapped around the branch 7, and the string of lights 71 is composed of multiple decorative light bodies 711. One end of the string of lights 71 is provided with a plug 72, and the connecting rod 1 is provided with at least one socket 15, which is electrically connected to the male end 4 and / or the female end 5. When the plug 72 is inserted into the socket 15, the male end 4 and / or the female end 5 are connected to the string of lights 71, allowing current to flow through the internal circuitry of the connecting rod 1 to the string of lights 71, thereby illuminating the decorative light bodies 711. This achieves integrated power supply for the Christmas tree, eliminating the need for additional external power lines.

[0066] The working principle of the present invention will be explained in detail below; During assembly, the constricted portion 13 of the upper connecting rod 1 is inserted into the second end 12 of the lower connecting rod 1, so that the male end 4 on the constricted portion 13 and the female end 5 inside the second end 12 are connected. At the same time, the snap-fit ​​part 2 on the outer peripheral wall of the first end 11 is snapped into place with the plastic part 3 sleeved on the end of the second end 12, thereby realizing the rapid mechanical fixation of each connecting rod 1 and the synchronous conduction of electrical circuits. During this process, the connecting portion 61 of the umbrella cover 6 is pressed and fixed to the outer periphery of the connecting rod 1 through a controllable plastic deformation process. The deformation amount is strictly controlled to maintain the original roundness and inner cavity size of the connecting rod 1 and avoid squeezing and damaging the female end 5. The bottom end of the main rod 9 is inserted and fixed to the base 8 for connection. Inside the mounting hole 831 of component 83, the connecting rod 81 of base 8 is formed by the sliding connection of fixing component 84 and sliding component 85. The first abutting surface 8511 and the second abutting surface 8512 at both ends of the long groove 851 abut against the limiting step 841 at the end of fixing component 84 in both directions, so that the sliding component 85 slides back and forth within a preset stroke, thereby changing the overall length of connecting rod 81 to adapt to Christmas trees of different sizes. When the light string 71 wrapped on the branch 7 is inserted into the socket 15 on the connecting rod 1 through plug 72, the light string 71 is powered through the conductive connection between male end 4 and female end 5, and can be lit up in one piece without external power cord.

[0067] The innovation of this invention lies in fixing the umbrella cover through a controllable plastic deformation process, effectively avoiding damage to the internal female end caused by the deformation of the connecting rod, ensuring the stability and detachability of the electrical connection, reducing maintenance costs, and extending service life. The axial extension design of the constricted part increases the mating area, significantly improving the bending strength at the connection of adjacent connecting rods, ensuring the overall stability of the Christmas tree main pole when erected. The telescopic base structure can adapt to Christmas trees of different sizes, eliminating the need for frequent base replacements, reducing procurement costs and storage space. At the same time, the adjustment operation is simple and quick, allowing users to flexibly adjust the support span according to actual needs. Furthermore, the bidirectional limiting structure of the long groove and the limiting step prevents the sliding parts from falling off or getting stuck without additional parts, making the base length adjustment stable and reliable, balancing the compactness of small trees and the anti-tipping ability of large trees. The design of the inner step structure forms an axial stop for the plastic parts, preventing them from sliding down the connecting rod even after long-term use and friction aging, ensuring continuous and precise alignment with the snap-fit ​​parts and preventing the snap from loosening.

[0068] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

[0069] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A Christmas tree connection structure, characterized in that, Includes a main rod (9), which is formed by connecting at least two connecting rods (1). Each connecting rod (1) includes a first end (11) and a second end (12). The outer peripheral wall of the first end (11) is provided with a snap-fit ​​component (2), and the end of the second end (12) is fitted with a plastic part (3). The snap-fit ​​component (2) is snapped into the plastic part (3). The connecting rod (1) also includes a constricted portion (13), which has a male end (4) and the second end (12) has a female end (5). The male end (4) includes a tip (41), and the female end (5) includes an opening (51) and a spring (52), the spring (52) being used to press the female end (5) close to the tip (41) of the male end (4); thereby, the constricted portion (13) is inserted into the second end (12) of another connecting rod (1) so that the male end (4) and the female end (5) are connected by interlocking, the tip (41) is inserted into the opening (51), and the connecting rod (1) is able to form an electrical contact at any position in its radially uniform circumferential direction; The connecting rod (1) is provided with a plurality of umbrella sleeves (6) spaced apart along the axial direction. Each umbrella sleeve (6) includes a connecting part (61), which is pressed and fixed to the outer peripheral wall of the connecting rod (1) by a plastic deformation process. It also includes a base (8) connected to the main rod (9), the base (8) including at least two cross-connected connecting rods (81), the connecting rod (81) including a fixing member (84) and a sliding member (85), the sliding member (85) being slidably connected to the fixing member (84) and being able to slide back and forth along the axial direction of the fixing member (84) to change the overall length of the connecting rod (81) so as to adapt to Christmas trees of different sizes.

2. The Christmas tree connection structure according to claim 1, characterized in that, The connecting rod (81) is provided with a connector (83), the connector (83) is provided with a mounting hole (831), and the main rod (9) is disposed in the mounting hole (831).

3. The Christmas tree connection structure according to claim 2, characterized in that, The lower end of the mounting hole (831) is provided with a limiting block (82), which is used to prevent the main rod (9) from passing through the lower end of the mounting hole (831).

4. A Christmas tree connection structure according to claim 2, characterized in that, The fixed member (84) is provided with the sliding member (85) at both ends. A limiting component is provided between the sliding member (85) and the fixed member (84). The limiting component is used to limit the maximum extension position and the minimum retraction position of the sliding member (85) relative to the fixed member (84).

5. A Christmas tree connection structure according to claim 4, characterized in that, The limiting component includes an elongated groove (851) formed on the sliding member (85) and a limiting step (841) disposed at the end of the fixing member (84) and extending into the elongated groove (851). The two ends of the elongated groove (851) respectively abut against the limiting step (841) to achieve bidirectional travel limiting.

6. The Christmas tree connection structure according to claim 1, characterized in that, The plastic part (3) has an inner step (31), and the end face of the second end (12) of the connecting rod (1) abuts against the inner step (31) to form an axial limit on the plastic part (3).

7. A Christmas tree connection structure according to claim 6, characterized in that, The snap-fit ​​component (2) is fixed to the connecting rod (1) by fastener one (22). The snap-fit ​​component (2) includes a snap-fit ​​part (21). The plastic part (3) is provided with a snap-fit ​​groove (32). The snap-fit ​​part (21) is inserted into the snap-fit ​​groove (32) to snap-fit ​​and fix the plastic part (3) and the snap-fit ​​component (2).

8. A Christmas tree connection structure according to claim 1, characterized in that, The bottom of the connecting part (61) of the umbrella cover (6) is provided with a second fastener (64), which is fixedly connected to the connecting rod (1) to fix the female end (5) inside the second end (12) and form an axial abutment against the umbrella cover (6).

9. A Christmas tree connection structure according to claim 8, characterized in that, The umbrella cover (6) also includes a connecting frame (62), which is fixed on the connecting part (61) and distributed in a ring around the outer periphery of the connecting part (61). The connecting frame (62) is provided with a receiving groove (621), and one end of the branch (7) is rotatably connected to the receiving groove (621).

10. A Christmas tree connection structure according to claim 1, characterized in that, The plastic part (3) is provided with a protrusion (33), and the second end (12) of the connecting rod (1) is provided with a connecting groove (14). The protrusion (33) is embedded in the connecting groove (14) to restrict the relative rotation between the plastic part (3) and the connecting rod (1).

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