A multi-segment telescopic pole and a multi-layer telescopic RV cabin with the pole.

Abstract

This utility model relates to the field of RV lifting box technology, and provides a multi-segment telescopic rod body, including at least two rods that are sequentially fitted together from the inside to the outside. A drive device is provided between the two rods to drive the remaining rods (excluding the outermost rod) to extend and retract synchronously. The drive device includes a support pulley and a steel wire rope wound around the support pulley. The steel wire rope in the outermost rod cavity extends out of the outermost rod cavity. Simply pulling the steel wire rope extending from the outermost rod cavity can drive multiple rods to extend together, making operation simple and providing a larger lifting space. A multi-layer telescopic RV cabin body is also provided, including the aforementioned multi-segment telescopic rod body and a winding mechanism. The RV cabin body has a larger lifting space, a simpler structure, and is easier to maintain. Operation is convenient; simply turning the winding handle can drive four multi-segment telescopic rods to extend simultaneously at the same height.

Description

Technical Field

[0001] This utility model relates to the field of RV lifting boxes, specifically a multi-segment telescopic rod and a multi-layer telescopic RV box having the rod. Background Technology

[0002] As people's living standards improve, the demand for motorhomes is also increasing. Among them, trailer motorhomes are widely used in tourist attractions and campgrounds due to their complete functions and convenient mobility. In order to seek more living space, lift-up motorhomes are widely used.

[0003] Chinese patent CN2023229546494 discloses a multi-layer lifting RV body, including a lifting canopy, a fixed carriage, a fixing component, a nut rotatably connected within the fixing component and having a worm gear on its outer wall, a threaded connecting nut, and a worm gear for connecting adjacent threaded rods, each end having a second bevel gear. In operation, the worm gear rotates first, which in turn rotates the worm wheel. The rotation of the worm wheel causes the threaded rod to rotate and move upwards. The rotation of the worm wheel then rotates the bevel gear at one end, which in turn rotates the bevel gear of the adjacent worm gear, thus rotating the adjacent worm gear. The adjacent worm gear then rotates the adjacent threaded rod to rise or fall, achieving synchronous rotation and rise of the four threaded rods, thus achieving smooth lifting and lowering of the canopy. This multi-layer lifting RV body has the advantages of simple operation, synchronous lifting, and smooth operation. However, the lifting space achieved by the worm gear rotation is small, and the structure is complex, making later maintenance inconvenient. Utility Model Content

[0004] The first objective of this utility model is to propose a multi-segment telescopic pole with a simple lifting drive device, easy operation, and large lifting space.

[0005] A multi-segment telescopic pole includes at least two poles that are sequentially fitted together from the inside out, wherein the inner pole can extend from the top of the adjacent outer pole or retract into the pole cavity of the adjacent outer pole.

[0006] A drive device is provided between multiple poles to drive the synchronous extension and retraction of the remaining poles except the outermost pole.

[0007] The driving device includes a support pulley and a steel wire rope wound around the support pulley. The support pulley is fixed in the outer pole cavity of two adjacent poles. One end of the steel wire rope is fixedly connected to the bottom end of the outer wall of the inner pole of two adjacent poles. The other end of the steel wire rope in the outermost pole cavity extends out of the outermost pole cavity. Except for the steel wire rope in the outermost pole cavity, the other ends of the other steel wire ropes extend out of the outer pole cavity of two adjacent poles and are fixedly connected to the bottom end of the next level pole.

[0008] With the above structure, by pulling the steel wire rope extending from the outermost pole cavity, multiple poles can be extended together. The length of the steel wire rope is the length of each pole except the outermost pole. The multi-segment telescopic pole has a large lifting space, and the drive device has a simple structure and is easy to operate.

[0009] To save space between the first and second rods and make the overall multi-segment telescopic rod smaller, the rod includes a first rod, a second rod, ... and an Nth rod arranged sequentially from the inside out; the bottom of the second rod is provided with a mounting base, the mounting base is fixedly provided with a mounting rod, and the top of the mounting rod is provided with a support pulley; except for the first rod and the second rod, the support pulleys in the remaining rod cavities are all fixed to the inner sidewall of the top of the rod.

[0010] To prevent the mounting rod from extending beyond the first rod body, the mounting rod extends into the rod cavity of the first rod body, and the height of the mounting rod is lower than the height of the first rod body and the second rod body, respectively.

[0011] Preferably, the rod body includes a first rod body, a second rod body, a third rod body, and a fourth rod body, with the fourth rod body being disposed on the outermost side.

[0012] The second objective of this invention is to provide a multi-layer telescopic RV cabin with the aforementioned multi-segment telescopic rods, which allows for a larger lifting space for the RV cabin, and also features a simple structure that facilitates maintenance.

[0013] A multi-layer telescopic RV cabin with the aforementioned multi-segment telescopic rods includes a cabin frame, the cabin frame including a frame base, and multiple telescopic rods fixedly connected to the four corners of the frame base. The bottom end of the last rod is fixedly connected to the frame base, and a connecting rod is fixedly connected between the top sidewalls of two adjacent last rods.

[0014] With the above structure, the multi-segment telescopic rods allow for a larger lifting space for the housing frame. The drive mechanism of the multi-segment telescopic rods is simple in structure, easy to operate, and more convenient for subsequent maintenance.

[0015] To facilitate the turning of the wire rope in the desired direction, each of the four corners of the frame base is provided with a first-stage steering wheel, and the bottom of the outermost rod is provided with a slot. The steering wheel is located in the slot, and the wire rope in the outermost rod extends out from the slot after being turned by the first-stage steering wheel.

[0016] The frame base has a winding mechanism and a three-stage steering wheel on one of its transverse base rods. The two longitudinal base rods of the frame base are each equipped with a secondary steering wheel at the end near the winding mechanism. The two steel wire ropes away from the winding mechanism are turned by the secondary steering wheel and then fixedly connected to the other steel wire rope near the secondary steering wheel to form a primary converging rope.

[0017] In order to enable the four multi-segment telescopic rods to rise and fall simultaneously and maintain the same height during the rise and fall, the primary collection rope near the winding mechanism is fixedly connected to another primary collection rope after being turned by the three-stage steering wheel to form a total collection rope, which is sleeved on the winding mechanism.

[0018] Preferably, the winding mechanism is a hand-cranked winch, which includes a winch support, a winding wheel rotatably disposed inside the winch support, and a winding handle rotatably disposed outside the winch support. The winding wheel and the winding handle are connected by gear transmission.

[0019] After adopting the above technical solution, the beneficial effects of this utility model are:

[0020] 1. The multi-segment telescopic pole provided by this utility model is provided with poles and a driving device that are sequentially assembled from the inside to the outside. The driving device includes a steel wire rope and a support pulley. Only by pulling the steel wire rope that extends out of the outermost pole cavity can multiple poles be extended together, making the operation simple.

[0021] 2. The multi-segment telescopic pole provided by this utility model has a larger lifting space, and the length of the steel wire rope pulled out is the length of each pole except the outermost pole. The setting of the mounting base and mounting rod saves the space between the first pole and the second pole, making the entire multi-segment telescopic pole occupy less space.

[0022] 3. The multi-layer telescopic RV cabin provided by this utility model has the above-mentioned multi-segment telescopic rods. The setting of the multi-segment telescopic rods makes the lifting space of the cabin frame larger, and the drive device of the multi-segment telescopic rods has a simple structure, is easy to operate, and is more convenient for subsequent maintenance.

[0023] 4. The multi-layer telescopic RV cabin provided by this utility model is equipped with a winding mechanism, a first-stage steering wheel, a second-stage steering wheel and a third-stage steering wheel. After all the wire ropes are turned, they are integrated into a total rope. The total rope is wound on the winding mechanism. Only by turning the winding handle can the four multi-segment telescopic poles be extended at the same time, and the height is consistent. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the housing frame in this utility model;

[0025] Figure 2This is a schematic diagram of the structure of the multi-segment telescopic rod in this utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the multi-segment telescopic rod in this utility model;

[0027] Figure 4 This is a top view of the multi-segment telescopic rod in this utility model;

[0028] Figure 5 This is a schematic diagram of the winding mechanism in this utility model.

[0029] Wherein: 1-Frame base; 2-Multi-segment telescopic pole; 20-Slotted; 21-First pole; 22-Second pole; 23-Third pole; 24-Fourth pole; 25-Pulley; 26-Wire rope; 27-Mounting seat; 28-Mounting rod; 3-Connecting rod; 4-First-stage steering wheel; 5-Second-stage steering wheel; 6-Third-stage steering wheel; 7-Winding mechanism; 71-Windshaft bracket; 72-Winding wheel; 73-Winding handle. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] The orientations mentioned in this specification are based on the orientation of this utility model during normal operation, and do not limit its orientation during storage and transportation. They only represent relative positional relationships and do not represent absolute positional relationships.

[0032] like Figure 1-5 As shown, a multi-segment telescopic pole includes poles that are sequentially assembled from the inside out. The poles can be two, three, four, or more. In this embodiment, the poles are set to four, including a first pole 21, a second pole 22, a third pole 23, and a fourth pole 24. The fourth pole 24 is located on the outermost side, and the first pole 21 is located on the outermost side.

[0033] It is located on the innermost side. The innermost rod can extend from the top of the adjacent outermost rod or retract into the rod cavity of the adjacent outermost rod; a drive device is provided between multiple rods to drive the remaining rods except the outermost rod to extend and retract synchronously. The drive device has a simple structure and is easy to operate.

[0034] The drive unit includes a support pulley 25 and a steel wire rope 26 wound around the support pulley 25. Specifically, the steel wire rope 26 can be a plastic-coated steel wire rope or a fiber-core steel wire rope, or it can be replaced with a nylon lifting rope or chain. The support pulley 25 is fixed in the outermost rod cavity of two adjacent rods. One end of the steel wire rope 26 is fixedly connected to the bottom end of the outer wall of the innermost rod of two adjacent rods. The other end of the steel wire rope 26 in the outermost rod cavity extends out of the outermost rod cavity. Except for the steel wire rope 26 in the outermost rod cavity, the other ends of the remaining steel wire ropes 26 extend out of the outermost rod cavities of two adjacent rods and are fixedly connected to the bottom end of the next level rod. Only the steel wire rope 26 extending out of the outermost rod cavity needs to be pulled to drive multiple rods to extend together, which is simple to operate. The length of the steel wire rope 26 pulled out is the length of each rod except the outermost rod, which makes the lifting space of the multi-segment telescopic rod 2 larger.

[0035] The rod body includes a first rod 21, a second rod 22, ... and an Nth rod arranged sequentially from the inside out; the bottom of the second rod 22 is provided with a mounting base 27, and the mounting base 27 is fixedly provided with a mounting rod 28. The top of the mounting rod 28 is provided with a support pulley 25, which saves space between the first rod 21 and the second rod 22, making the entire multi-segment telescopic rod body 2 smaller in size; except for the first rod 21 and the second rod 22, the support pulleys 25 in the remaining rod cavities are all fixed on the inner side wall of the top of the rod body.

[0036] The mounting rod 28 extends into the cavity of the first rod body 21. The height of the mounting rod 28 is lower than the height of the first rod body 21 and the second rod body 22, respectively, to prevent the mounting rod 28 from extending out of the first rod body 21 and the second rod body 22.

[0037] The multi-segment telescopic rod 2 in this utility model has four rods, including a first rod 21, a second rod 22, a third rod 23 and a fourth rod 24, with the fourth rod 24 located on the outermost side.

[0038] A multi-story retractable RV cabin with the aforementioned multi-segment telescopic rods 2 includes a cabin frame, a frame base 1, and multiple telescopic rods 2 fixedly connected to the four corners of the frame base 1. Each multi-segment telescopic rod 2 consists of four rods: a first rod 21, a second rod 22, a third rod 23, and a fourth rod 24, with the fourth rod 24 located on the outermost side. The bottom end of the fourth rod 24 is fixedly connected to the frame base 1, and a connecting rod 3 is fixedly connected between the top sidewalls of adjacent fourth rods 24. The multi-segment telescopic rods 2 allow for a larger lifting space for the cabin frame, and the drive mechanism of the multi-segment telescopic rods 2 is simple in structure, easy to operate, and facilitates subsequent maintenance.

[0039] Each of the four corners of the frame base 1 is provided with a primary steering wheel 4, and the bottom of the fourth rod 24 is provided with a slot 20. The steering wheel is located in the slot 20. The steel wire ropes 26 in the fourth rod 24 are all turned by the primary steering wheel 4 and then extend out from the slot 20. One of the transverse base rods of the frame base 1 is provided with a winding mechanism 7 and a third-stage steering wheel 6. The two longitudinal base rods of the frame base 1 are provided with a second-stage steering wheel 5 at the end near the winding mechanism 7. The two steel wire ropes 26 away from the winding mechanism 7 are all turned by the second-stage steering wheel 5 and then fixedly connected to the other steel wire rope 26 near the second-stage steering wheel 5 to form a primary converging rope.

[0040] The primary consolidating rope near the winding mechanism 7 is turned by the three-stage steering wheel 6 and then fixedly connected to another primary consolidating rope to form a total consolidating rope. The total consolidating rope is sleeved on the winding mechanism 7. The winding mechanism 7 can be a hand-cranked winch or an electric winch. In this embodiment, the winding mechanism 7 is a hand-cranked winch. The hand-cranked winch includes a winch support 71, a winding wheel 72 rotatably mounted inside the winch support 71, and a winding handle 73 rotatably mounted outside the winch support 71. The winding wheel 72 and the winding handle 73 are connected by gear transmission. Rotating the winding handle 73 drives the winding wheel 72 to rotate, which drives the total consolidating rope to be wound on the winding wheel 72. At the same time, it drives the four multi-segment telescopic rods 2 to extend or retract simultaneously, and the height of the extension or retraction is consistent.

[0041] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A multi-section telescopic pole body, characterized by: It includes at least two rods that are nested together from the inside out, with the inner rod extending from the top of the adjacent outer rod or retracting into the cavity of the adjacent outer rod. A drive device is provided between multiple poles to drive the synchronous extension and retraction of the remaining poles except the outermost pole. The driving device includes a support pulley and a steel wire rope wound around the support pulley. The support pulley is fixed in the outer pole cavity of two adjacent poles. One end of the steel wire rope is fixedly connected to the bottom end of the outer wall of the inner pole of two adjacent poles. The other end of the steel wire rope in the outermost pole cavity extends out of the outermost pole cavity. Except for the steel wire rope in the outermost pole cavity, the other ends of the other steel wire ropes extend out of the outer pole cavity of two adjacent poles and are fixedly connected to the bottom end of the next level pole.

2. A multi-section telescopic pole according to claim 1, wherein, The rod body includes a first rod body, a second rod body, ... and an Nth rod body arranged sequentially from the inside to the outside; The bottom of the second rod is provided with a mounting base, the mounting base is fixedly provided with a mounting rod, and the top of the mounting rod is provided with a support pulley; Except for the first rod and the second rod, the supporting pulleys inside the cavities of the remaining rods are all fixed to the inner sidewall of the top of the rod.

3. A multi-section telescopic pole according to claim 2, wherein, The mounting rod extends into the cavity of the first rod body, and the height of the mounting rod is lower than the height of the first rod body and the second rod body.

4. A multi-segment telescopic pole according to any one of claims 1-3, characterized in that, The rod body includes a first rod body, a second rod body, a third rod body, and a fourth rod body, with the fourth rod body located on the outermost side.

5. A multi-layer telescopic RV cabin having the multi-segment telescopic pole body as described in any one of claims 1-4, characterized in that, The system includes a room frame, which includes a frame base. Multiple telescopic rods are fixedly connected to the four corners of the frame base. The bottom end of the last rod is fixedly connected to the frame base, and a connecting rod is fixedly connected between the top sidewalls of two adjacent last rods.

6. The multi-layer retractable RV cabin according to claim 5, characterized in that, Each of the four corners of the frame base is provided with a first-stage steering wheel, and the bottom of each of the outermost rods is provided with a slot. The steering wheel is located in the slot, and the steel wire ropes in the outermost rods are all turned by the first-stage steering wheel and then extend out from the slot. The frame base has a winding mechanism and a three-stage steering wheel on one of its transverse base rods. The two longitudinal base rods of the frame base are each equipped with a secondary steering wheel at the end near the winding mechanism. The two steel wire ropes away from the winding mechanism are turned by the secondary steering wheel and then fixedly connected to the other steel wire rope near the secondary steering wheel to form a primary converging rope.

7. The multi-layer retractable RV cabin according to claim 6, characterized in that, The primary concentrating rope near the winding mechanism is turned by the three-stage steering wheel and then fixedly connected to another primary concentrating rope to form a total concentrating rope, which is sleeved on the winding mechanism.

8. The multi-layer retractable RV cabin according to claim 6, characterized in that, The winding mechanism is a hand-cranked winch, which includes a winch support, a winding wheel rotatably disposed inside the winch support, and a winding handle rotatably disposed outside the winch support. The winding wheel and the winding handle are connected by gear transmission.

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