A trailerable house car tow rack

By designing components such as T-shaped frames and connecting pipes, and utilizing the combination of limiting posts and positioning ball heads, the durability and docking difficulty issues of towable caravan tow frames have been resolved, achieving fast and reliable towing connections.

CN224348698UActive Publication Date: 2026-06-12RONGCHENG FUQI TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
RONGCHENG FUQI TECH CO LTD
Filing Date
2025-09-01
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

Existing technologies for trailer tow frames lack durability and are difficult to connect.

Method used

It adopts components such as T-shaped frame, connecting pipe, wide-mouth sleeve, fasteners, and adjusting parts, and achieves rapid docking and length adjustment through the cooperation of limit post, positioning ball head and spring.

🎯Benefits of technology

It improves the durability of the towing frame, simplifies the docking process, and ensures the safety and reliability of the towing process.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224348698U_ABST
    Figure CN224348698U_ABST
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Abstract

The utility model relates to trailer traction frame technical field provides a kind of trailer house traction frame, including T-shaped frame one, T-shaped frame two and connecting column, the one side of T-shaped frame one is fixedly installed with butt joint pipe, this trailer house traction frame further includes: wide mouth cover, it is communicated in the one side of the butt joint pipe;Fixing, it is installed on the butt joint pipe, can do circular motion with the butt joint pipe as pivot under the manual action;Trailer rod, it is fixedly installed in the one side of T-shaped frame two;Adjusting part, it is located on the trailer rod, under the manual action, so that the connecting column moves along horizontal direction. In the utility model, the fixing of positioning ball head is controlled by limiting column to fixed part, to reach the purpose of quick docking. Meanwhile, the position of adjusting block is controlled by positioning column two, and then the length of connecting column is adjusted, so that in the docking process, even if the position of both vehicles is not completely accurate, docking can be completed.
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Description

Technical Field

[0001] This utility model relates to the field of trailer towing frame technology, and in particular to a trailer caravan towing frame. Background Technology

[0002] A tow rack is used to attach a vehicle to a towing device for towing. It is typically made of robust and durable metal, possessing sufficient strength and durability to withstand the stress and vibration during towing. Scenarios for using a tow rack primarily include situations where a vehicle cannot drive independently or needs to be towed to its destination, such as vehicle breakdowns, accident scene cleanup, and emergency rescue. It secures the vehicle to the towing device, ensuring safe and reliable towing operations while minimizing further damage to the vehicle itself.

[0003] In the prior art, such as Chinese Patent No. CN222291404U, a motorhome towing mechanism includes a motorhome body. A support plate for connecting a fixed frame is bolted to one side of the motorhome body. A drive rod A, which moves the connecting frame, is slidably connected to one side of the fixed frame. A drive rod B, which drives a transmission screw to rotate, is inserted into the outside of the connecting frame. A threaded block, which moves a towing rod, is threaded to the outside of the transmission screw. A positioning block is welded to one side of the towing rod for fixation. This invention, through the arrangement of drive rod A, drive rod B, fixed frame, connecting frame, transmission screw, threaded block, and towing rod, solves the problem that existing towable motorhomes cannot adjust the towing rod according to the position of the towing vehicle during use.

[0004] While the above scheme has the advantages mentioned above, its disadvantages lie in the lack of durability of the structural design. This is because the added bolt components will rust due to long-term exposure to the outside, affecting the performance. In addition, the design lacks auxiliary docking design, making docking difficult when towing other vehicles. Utility Model Content

[0005] The purpose of this invention is to solve the problem of insufficient durability in the existing technology, and at the same time, to solve the problem of difficult docking.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a towable RV tow frame, comprising a T-shaped frame one, a T-shaped frame two, and a connecting column, wherein a connecting pipe is fixedly installed on one side of the T-shaped frame one, and the towable RV tow frame further includes:

[0007] A wide-mouth sleeve, connected to one side of the connecting pipe;

[0008] The fastener is installed on the connecting pipe and can move in a circular motion around the connecting pipe as the axis under manual operation.

[0009] The towing rod is fixedly installed on one side of the second T-shaped frame;

[0010] An adjusting component, located on the tow bar, allows the connecting post to move horizontally under manual operation, thereby adjusting the length of the connecting post extending beyond the tow bar.

[0011] In a preferred embodiment, the fastener includes:

[0012] A fixing hole is formed on the connecting pipe;

[0013] An annular sleeve is fitted onto the connecting pipe.

[0014] The technical advantage of adopting the above-mentioned further solution is that the rotation of the annular sleeve can be used to drive the fixing member.

[0015] In a preferred embodiment, the fastener further includes:

[0016] The L-shaped rod is installed on the annular sleeve;

[0017] A C-shaped fixing buckle is used to fix one end of the L-shaped rod;

[0018] The L-shaped rod can rotate synchronously with the annular sleeve, and the C-shaped fixing buckle can be embedded in the fixing hole during rotation.

[0019] The technical effect of adopting the above-mentioned further solution is that the C-shaped fixing buckle is used to connect with the docking groove to achieve a fixing effect.

[0020] In a preferred embodiment, the fastener further includes:

[0021] A rotating rod is mounted on the annular sleeve;

[0022] A limiting post is embedded in the rotating rod and penetrates the side wall of the connecting pipe;

[0023] The first slot is formed inside the limiting post;

[0024] A rotating column is installed between the two sides of the inner wall of the slot.

[0025] Two concave limiting rods are both sleeved on the rotating column, and a spring is installed on the surface of each of the two concave limiting rods;

[0026] The other ends of the two springs are respectively connected to the upper and lower sides of the inner wall of the slot.

[0027] The technical effect of adopting the above-mentioned further solution is that the limiting post is used to limit the position of the annular sleeve.

[0028] In a preferred embodiment, the adjusting member includes:

[0029] The second slot is located on one side of the towing rod;

[0030] The rotating block is rotatably mounted on the inner wall of the second slot via a rotating shaft.

[0031] The technical effect of adopting the above-mentioned further solution is that the rotation of the rotating block is used to achieve adjustment during the turning process.

[0032] In a preferred embodiment, the adjusting member further includes:

[0033] A positioning ball head is installed on one side of the connecting column;

[0034] A docking groove is formed on the positioning ball head;

[0035] Multiple slots are provided on both sides of the tow bar.

[0036] The technical effect of adopting the above-mentioned further solution is that the positioning ball head is embedded in the connecting pipe to achieve the docking effect.

[0037] In a preferred embodiment, the adjusting member further includes:

[0038] An adjusting block is installed on one side of the connecting column;

[0039] Two slots are provided on one side of the adjusting block;

[0040] Two positioning posts are respectively embedded in the two slots.

[0041] Two springs are respectively installed on one side of the adjusting block;

[0042] The two springs are respectively sleeved on the two positioning posts, and the other end of each spring is connected to one side of the positioning post.

[0043] The technical effect of adopting the above-mentioned further solution is that the position and extension length of the connecting column can be adjusted by pushing the adjusting block.

[0044] In a preferred embodiment, the adjusting member further includes:

[0045] Two positioning posts are respectively embedded in both sides of the adjustment block;

[0046] The fifth slot is located on one side of the second positioning post;

[0047] Among them, the fifth slot can fit with the fourth slot.

[0048] The technical effect of adopting the above-mentioned further solution is that the adjusting member is limited and fixed by the second positioning post.

[0049] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0050] 1. In this utility model, after the positioning ball head is embedded into the connecting pipe, the two concave limiting rods are manually squeezed. At this time, the two concave limiting rods can rotate around the rotating column and stretch the two springs. In the rotating state of the concave limiting rods, the corner ends of the concave limiting rods disengage from the inner wall of the connecting pipe. The limiting column is then manually pulled out, and the limiting column makes limiting contact with the annular sleeve. At this time, the annular sleeve rotates around the connecting pipe, and the annular sleeve, connected by the L-shaped rod, drives the C-shaped fixing buckle to be embedded in the fixing hole. Since the positioning ball head is located inside the connecting pipe, the C-shaped fixing buckle can be embedded in the docking groove to fix the docking position. In this design, the positioning ball head is fixed by the fixing component controlled by the limiting column to achieve the purpose of rapid docking.

[0051] 2. In this invention, the first positioning post is manually pulled out, detaching from the inside of slots four and five. Spring two is in a stretched state at this point, releasing the fixation of the second positioning post. The two second positioning posts are then manually pulled out. The adjusting block is then pushed, and with the connection of the connecting post and the assistance of the wide-mouth sleeve, the positioning ball head is inserted into the connecting pipe, completing the docking process. The first positioning post is then manually pulled out again, and the two second positioning posts are passed through slot three and inserted into the sides of the adjusting block. The first positioning post is then released, and under the elastic force of spring two, it is pulled and inserted into slot five to fix the second positioning post. In this design, the position of the adjusting block is controlled by the second positioning post, thereby adjusting the length of the connecting post. This allows docking to be completed even if the positions of the two vehicles are not perfectly precise. Attached Figure Description

[0052] Figure 1 A schematic diagram of the main structure of a towable RV tow frame provided by this utility model;

[0053] Figure 2 A schematic diagram of the docking structure of a towable RV tow frame provided by this utility model;

[0054] Figure 3 A schematic diagram of a limiting post structure for a towable RV towing frame provided by this utility model;

[0055] Figure 4 A schematic diagram of the internal structure of the limiting column of a towable RV towing frame provided by this utility model;

[0056] Figure 5 This utility model provides a towable RV tow rack. Figure 4Enlarged structural diagram at point A;

[0057] Figure 6 A schematic diagram of the adjusting component structure of a towable RV tow frame provided by this utility model;

[0058] Figure 7 This is a schematic diagram of the internal structure of the adjusting component of a towable RV tow frame provided by this utility model.

[0059] Legend:

[0060] 1. T-shaped frame one; 101. Connecting pipe; 102. Wide-mouth sleeve; 103. Fixing hole; 104. Ring sleeve; 105. L-shaped rod; 106. C-shaped fixing buckle; 2. Rotating rod; 201. Limiting post; 202. Groove one; 203. Rotating post; 204. Concave limiting rod; 205. Spring one; 3. T-shaped frame two; 301. Trailing rod; 302. Groove two; 303. Rotating block; 304. Connecting post; 305. Positioning ball head; 306. Connecting groove; 307. Groove three; 4. Adjusting block; 401. Groove four; 402. Positioning post one; 403. Spring two; 5. Positioning post two; 501. Groove five. Detailed Implementation

[0061] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0062] Example 1:

[0063] Please see Figures 1-7 This embodiment provides a towable RV tow rack that can be quickly docked, and its specific concept is as follows:

[0064] A trailer caravan tow frame includes a T-shaped frame 1, a T-shaped frame 2, and a connecting column 304. A connecting pipe 101 is fixedly installed on one side of the T-shaped frame 1. The trailer caravan tow frame also includes a wide-mouth sleeve 102 and a fastener.

[0065] Among them, the wide-mouth sleeve 102, which plays an auxiliary docking role, is connected to one side of the docking pipe 101.

[0066] Meanwhile, the fixed parts are installed on the connecting pipe 101 and can move in a circular motion around the connecting pipe 101 as the axis under manual operation.

[0067] As examples, in this embodiment, the fasteners include: a fixing hole 103, an annular sleeve 104, an L-shaped rod 105, a C-shaped fixing buckle 106, a rotating rod 2, a limiting post 201, a slot 1 202, a rotating post 203, and two concave limiting rods 204.

[0068] The fixing hole 103, which plays an auxiliary role, is opened on the connecting pipe 101.

[0069] Meanwhile, the annular sleeve 104, which plays a rotating role, is fitted onto the connecting pipe 101.

[0070] In this embodiment, an L-shaped rod 105 is also added, which is installed on the annular sleeve 104.

[0071] Meanwhile, the C-shaped fixing buckle 106, which plays a fixing role, is fixedly connected to one end of the L-shaped rod 105.

[0072] It should be noted that the L-shaped rod 105 can rotate synchronously with the annular sleeve 104, and the C-shaped fixing buckle 106 can be inserted into the fixing hole 103 during rotation.

[0073] The rotating rod 2, which plays a rotating role, is installed on the annular sleeve 104.

[0074] Meanwhile, the limiting post 201, which plays a limiting role, is embedded in the rotating rod 2 and penetrates the side wall of the connecting pipe 101.

[0075] Among them, the slot 202, which plays an auxiliary role, is opened inside the limiting post 201.

[0076] In addition, the rotating column 203, which acts as a pivot, is installed between the two sides of the inner wall of the slot 202.

[0077] In this design, the two concave limiting rods 204 that serve as limiting rods are both sleeved on the rotating column 203, and springs 205 are installed on the surface of the two concave limiting rods 204.

[0078] It should be noted that the other ends of the two springs 205 are connected to the upper and lower sides of the inner wall of the slot 202, respectively.

[0079] In this embodiment, after the positioning ball head 305 is embedded in the connecting pipe 101, the two concave limiting rods 204 are manually squeezed. At this time, the two concave limiting rods 204 can rotate around the rotating column 203 and stretch the two springs 205. In the rotating state of the concave limiting rods 204, the corner end of the concave limiting rods 204 is disengaged from the inner wall of the connecting pipe 101. The limiting column 201 is manually pulled out, and the limiting column 201 makes limiting contact with the annular sleeve 104. At this time, the annular sleeve 104 rotates around the connecting pipe 101. Under the connection of the L-shaped rod 105, the annular sleeve 104 drives the C-shaped fixing buckle 106 to be embedded in the fixing hole 103. Since the positioning ball head 305 is located inside the connecting pipe 101, the C-shaped fixing buckle 106 can be embedded in the docking groove 306 to fix the docking position.

[0080] Example 2:

[0081] Please see Figures 1-7 Based on Example 1, this example provides a trailer RV tow rack that can assist in docking, and its specific concept is as follows:

[0082] The trailer tow rack also includes: tow bar 301 and adjustment components.

[0083] Among them, the trailing rod 301, which acts as a track, is fixedly installed on one side of the T-shaped frame 2 3.

[0084] In addition, the adjustable component is located on the tow bar 301, and can be manually operated to make the connecting column 304 move in the horizontal direction, thereby adjusting the length of the connecting column 304 extending out of the tow bar 301.

[0085] As examples, in this embodiment, the adjusting components include: slot 2 302, rotating block 303, positioning ball head 305, docking groove 306, multiple slots 307, adjusting block 4, two slots 401, two positioning pins 402, two springs 403, two positioning pins 5, and slot 5 501.

[0086] Among them, the auxiliary slot 302 is opened on one side of the tow bar 301.

[0087] Meanwhile, the rotating block 303, which plays a rotating role, is rotatably installed on the inner wall of the slot 2 302 via a rotating shaft.

[0088] In addition, the positioning ball head 305, which plays a docking role, is installed on one side of the connecting column 304.

[0089] The fixing groove 306 is provided on the positioning ball head 305.

[0090] It should be noted that the C-type retaining buckle 106 can pass through the retaining hole 103 and be embedded in the mating groove 306.

[0091] In addition, multiple slots 307 that serve a fixing function are provided on both sides of the tow bar 301.

[0092] The adjusting block 4, which plays an adjusting role, is installed on one side of the connecting column 304.

[0093] Meanwhile, two auxiliary slots, 401, are provided on one side of the adjusting block 4.

[0094] In this embodiment, two positioning posts 402 are also provided and are respectively embedded in two slots 401.

[0095] Among them, the two springs 403, which play an elastic role, are respectively installed on one side of the adjusting block 4.

[0096] It should be noted that the two springs 403 are respectively sleeved on the two positioning posts 402, and the other end of each is connected to one side of the positioning post 402.

[0097] Among them, the two positioning pins 5, which play a fixing role, are respectively embedded in the two sides of the adjusting block 4.

[0098] In addition, the auxiliary slot 501 is opened on one side of the positioning post 2 5.

[0099] It should be noted that slot 501 can be matched with slot 401.

[0100] In this embodiment, the positioning post 402 is manually pulled out, and the positioning post 402 disengages from the inside of the slot 401 and the slot 501. The spring 403 is in a stretched state in this state. At this time, the fixation of the positioning post 5 is released. The two positioning posts 5 are manually pulled out. At this time, the adjusting block 4 is pushed. With the connection of the connecting post 304 and the assistance of the wide sleeve 102, the positioning ball head 305 is embedded in the connecting pipe 101 to complete the docking process. The positioning post 402 is manually pulled out again, and the two positioning posts 5 are passed through the inside of the slot 307 and embedded in the two sides of the adjusting block 4. At this time, the positioning post 402 is released. Under the elastic action of the spring 403 itself, the positioning post 402 is pulled and embedded in the slot 501 to fix the positioning post 5.

[0101] Working principle:

[0102] When the driver needs to tow other vehicles, the positioning ball joint 305 on the towing vehicle can be inserted into the connecting pipe 101 installed on the vehicle to be towed. At this time, the two concave limiting rods 204 are manually squeezed. In this state, both concave limiting rods 204 rotate around the rotating post 203, so that the spring 205 is in a stretched state. Due to the rotation of the concave limiting rods 204, the corner ends of the concave limiting rods 204 disengage from the inner wall of the connecting pipe 101. At this time, the limiting post 201 can be manually pulled out a certain distance to release the limiting post 201 from the annular sleeve 104. At this time, the connecting pipe... 101 is a rotating annular sleeve 104. The annular sleeve 104 drives the L-shaped rod 105 to rotate. During the rotation, the L-shaped rod 105 drives the C-shaped fixing buckle 106 to be inserted into the fixing hole 103. During the docking process, the positioning ball head 305 is located inside the docking tube 101, and the C-shaped fixing buckle 106 can be smoothly inserted into the docking groove 306 to fix the docking position. At this time, the rotating rod 2 rotates to the other side of the docking tube 101, and the limiting post 201 is manually inserted. Under the action of the spring 205, the corner end of the concave limiting rod 204 is springed back to the inner wall of the docking tube 101 to achieve the limiting effect.

[0103] When the driver needs to dock the towing frame, first remove the positioning post 402. Positioning post 402 will disengage from slot 401 and be pulled out from slot 501. Spring 2 403 will then be in a stretched state. In this state, the fixation of positioning post 2 5 will be released. Manually remove positioning post 2 5. At this time, adjusting block 4 can control connecting post 304 to move in a straight line in the horizontal direction within rotating block 303. Push adjusting block 4 so that positioning ball head 305 can be smoothly embedded into docking pipe 101 under the connection of connecting post 304. After docking is completed, pull positioning post 402 and pass the two positioning posts 2 5 through slot 307 and embed them into both sides of adjusting block 4. Release positioning post 402 so that spring 2 403 can use its own elasticity to embed positioning post 402 into slot 501 to fix positioning post 2 5.

[0104] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0105] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A towable RV tow frame, comprising a T-shaped frame one (1), a T-shaped frame two (3), and a connecting column (304), wherein a connecting pipe (101) is fixedly installed on one side of the T-shaped frame one (1), characterized in that, The trailer tow hitch also includes: A wide-mouth sleeve (102) is connected to one side of the connecting pipe (101); The fastener is installed on the connecting pipe (101) and can move in a circular motion around the connecting pipe (101) as the axis under manual operation; The tow bar (301) is fixedly installed on one side of the T-shaped frame (3); An adjusting component, located on the tow bar (301), can be manually operated to move the connecting column (304) in the horizontal direction, thereby adjusting the length of the connecting column (304) extending out of the tow bar (301).

2. The towable RV tow frame according to claim 1, characterized in that, The fastener includes: A fixing hole (103) is provided on the connecting pipe (101); An annular sleeve (104) is fitted onto the connecting pipe (101).

3. The towable RV tow frame according to claim 2, characterized in that, The fastener also includes: The L-shaped rod (105) is installed on the annular sleeve (104); A C-type fixing buckle (106) is fixedly connected to one end of the L-shaped rod (105); The L-shaped rod (105) can rotate synchronously with the annular sleeve (104) under its rotation, and the C-shaped fixing buckle (106) can be embedded in the fixing hole (103) during the rotation.

4. The towable RV tow frame according to claim 3, characterized in that, The fastener also includes: Rotating rod (2) is mounted on the annular sleeve (104); The limiting post (201) is embedded in the rotating rod (2) and penetrates the side wall of the connecting pipe (101); The slot 1 (202) is opened inside the limiting post (201); A rotating column (203) is installed between the two sides of the inner wall of the slot (202); Two concave limiting rods (204) are both sleeved on the rotating column (203), and springs (205) are installed on the surface of the two concave limiting rods (204); The other ends of the two springs (205) are respectively connected to the upper and lower sides of the inner wall of the slot (202).

5. The towable RV tow frame according to claim 4, characterized in that, The adjusting element includes: The second slot (302) is provided on one side of the tow bar (301); The rotating block (303) is rotatably mounted on the inner wall of the slot two (302) via a rotating shaft.

6. The towable RV tow frame according to claim 1, characterized in that, The adjusting component further includes: A positioning ball head (305) is installed on one side of the connecting column (304); A docking groove (306) is formed on the positioning ball head (305); Multiple slots (307) are provided on both sides of the tow bar (301).

7. The towable RV tow frame according to claim 1, characterized in that, The adjusting component further includes: An adjusting block (4) is installed on one side of the connecting column (304); Two slots (401) are provided on one side of the adjusting block (4); Two positioning posts (402) are respectively embedded in the two slots (401); Two springs (403) are respectively installed on one side of the adjusting block (4); Two springs (403) are respectively sleeved on two positioning posts (402), and the other end of each spring is connected to one side of the positioning post (402).

8. The towable RV tow frame according to claim 7, characterized in that, The adjusting component further includes: Two positioning posts (5) are respectively embedded in both sides of the adjusting block (4); The fifth slot (501) is opened on one side of the second positioning post (5); Among them, the fifth slot (501) can fit with the fourth slot (401).