Quick-release guide wheel handle and guide wheel for a motor home

Abstract

The utility model relates to a kind of quick-release guide wheel handle and guide wheel for motor home, it solves the technical problem that the existing motor home guide wheel handle connection is unreliable, easy to automatically lift or accidentally fall off, it is equipped with handle and fixed seat, handle end fixedly connected with connecting sleeve, connecting sleeve is axially provided with polygonal through-hole;Fixed seat is provided with fixed part, the contour shape and size of fixed part are identical with the polygonal through-hole on connecting sleeve, connecting sleeve can be set on fixed part, it is also equipped with self-resetting spring pin as connecting pin, connecting sleeve is radially provided with first connecting hole, at least one second connecting hole is provided on fixed part, connecting pin and handle are detachably connected by first connecting hole, connecting pin is equipped with adjustable plunger, plunger can enter and exit second connecting hole, realize the unlocking and fixing of handle and fixed seat.The utility model can be widely applied to quick-release guide wheel for motor home.

Description

Technical Field

[0001] This utility model relates to the field of towable caravan technology, and in particular to a quick-release guide wheel crank handle and guide wheel for caravans. Background Technology

[0002] Guide wheels, or simply guide wheels, are crucial components in towed caravans used to adjust the parking position and maintain vehicle stability. They feature height and angle adjustment functions. The crank handle is a vital component for controlling the raising and lowering of the guide wheels. Existing caravan guide wheel crank handles have the following problems:

[0003] 1. The crank handle and the fixed base are integrated, meaning that the crank handle cannot be detached from the guide wheel. When the RV is in motion, even though the guide wheel has been raised, the vibration of the vehicle during travel will still be transmitted to the crank handle because the crank handle is rigidly connected to the guide wheel. This can cause the guide wheel to rise or fall unexpectedly, posing a significant safety hazard.

[0004] Second, the crank handle and the mounting base are fixed by magnetic attraction. Although quick release can prevent accidental lifting or lowering, the magnetic connection is unreliable. If it is not removed during driving, the crank handle may fall off when encountering bumps.

[0005] Therefore, it is necessary to propose a new type of quick-release guide wheel crank handle and guide wheel for RVs to solve the above-mentioned technical problems. Summary of the Invention

[0006] In order to solve the technical problem that the existing guide wheel crank handles for RVs are unreliable and prone to automatic lifting or accidental detachment, this utility model provides a quick-release guide wheel crank handle and guide wheel for RVs.

[0007] This utility model provides a quick-release guide wheel crank handle for RVs, which includes a crank handle and a fixing base. A connecting sleeve is fixedly connected to the end of the crank handle, and the connecting sleeve has a polygonal through hole in the axial direction. The fixing base has a fixing part, the outline shape and size of which are consistent with the polygonal through hole on the connecting sleeve. The connecting sleeve can be fitted onto the fixing part and also has a connecting pin. The connecting sleeve has a first connecting hole in the radial direction, and the fixing part has at least one second connecting hole. The connecting pin is detachably connected to the crank handle through the first connecting hole. The connecting pin has an adjustable plunger, which can move in and out of the second connecting hole to unlock and fix the crank handle to the fixing base.

[0008] Preferably, the connecting pin is a self-resetting spring pin.

[0009] Preferably, the connecting pin is provided with a handle portion, which is connected to the plunger. A spring is provided inside the connecting pin. Under the elastic force of the spring, the plunger is in an extended state. By pulling the handle portion to overcome the elastic force of the spring, the plunger can be retracted.

[0010] Preferably, the connecting pin has an external thread, and the first connecting hole has an internal thread, wherein the external thread engages with the internal thread of the first connecting hole.

[0011] Preferably, the fixing seat further includes a limiting part, and when the connecting sleeve is sleeved on the fixing part, the connecting sleeve abuts against the upper part of the limiting part, and the limiting part limits the crank handle.

[0012] Preferably, the fixing seat has a third connecting hole below the second connecting hole, and the fixing part is connected to the lead screw of the guide wheel body through the third connecting hole.

[0013] Preferably, the crank handle has a crank handle body, and the crank handle body has an L-shaped structure.

[0014] Preferably, each face of the polygonal part of the fixing part is provided with a second connecting hole.

[0015] Preferably, when the connecting sleeve is fitted onto the fixing part, the first connecting hole and its corresponding second connecting hole are coaxial.

[0016] This utility model also provides a quick-release guide wheel for RVs, which includes the aforementioned quick-release guide wheel crank handle for RVs.

[0017] The beneficial effects of this utility model are:

[0018] This invention, through the design of a quick-release structure, allows the crank handle to be removed when not in use, fundamentally solving the safety hazards caused by the crank handle falling off due to vehicle vibrations and the accidental raising and lowering of the guide wheels during RV travel. Furthermore, it offers convenient and quick assembly and disassembly. The quick-release structure employs a self-resetting spring pin; under the spring's elastic force, the plunger is in the extended state; by pulling the handle to overcome the spring's elastic force, the plunger can be retracted.

[0019] This utility model has a second connecting hole on each face of the polygonal part of the fixing part. After the connecting sleeve is put on the fixing part, the coaxial design of the first connecting hole and the corresponding second connecting hole facilitates the connection between the crank handle and the fixing seat. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the crank handle structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the exploded structure of the crank handle of this utility model;

[0022] Figure 3 This is another exploded structural diagram of the crank handle of this utility model;

[0023] Figure 4 This is a schematic diagram of the connecting pin of the crank handle of this utility model.

[0024] Explanation of symbols in the attached drawings:

[0025] 1. Crank handle; 11. Crank handle body; 12. Connecting sleeve; 121. First connecting hole; 2. Fixing base; 21. Fixing part; 211. Second connecting hole; 212. Third connecting hole; 22. Limiting part; 23. Extending end; 3. Connecting pin; 31. Piston; 32. External thread; 33. Handle part. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, so that those skilled in the art to which the present invention pertains can easily implement the present invention.

[0027] Example: Figure 1-4 As shown, this utility model includes a crank handle 1, a fixing base 2, and a connecting pin 3.

[0028] The crank handle 1 includes a crank handle body 11, which has an L-shaped structure. A connecting sleeve 12 is fixedly connected to its end. The connecting sleeve 12 has a polygonal through hole in the axial direction and a first connecting hole 121 in the radial direction. The first connecting hole 121 has an internal thread.

[0029] The fixing base 2 includes a fixing part 21 and a limiting part 22. The outline shape and size of the fixing part 21 are consistent with the polygonal through hole opened on the connecting sleeve 12. The connecting sleeve 12 can be fitted onto the fixing part 21 and abut against the upper part of the limiting part 22, thereby limiting the crank handle 1.

[0030] The fixing part 21 has several second connecting holes 211, and a third connecting hole 212 is provided below the second connecting holes 211. When the connecting sleeve 12 is fitted onto the fixing part 21, the first connecting hole 121 is coaxial with the second connecting hole 211. The fixing part 2 is connected to the lead screw of the guide wheel body (not shown in the figure) through the third connecting hole 212, which can be achieved by pin connection or screw connection. For ease of connection, a second connecting hole 211 is provided on each polygonal face of the fixing part 21. After the connecting sleeve 12 is fitted onto the fixing part 21, the first connecting hole 121 will always be coaxial with the corresponding second connecting hole 211.

[0031] The lower end of the limiting part 22 has a protruding end 23 with a smaller profile size. The protruding end 23 is inserted into the upper end cover of the guide wheel body. The upper end cover has a raised flange, which is located below the limiting part 22. The flange and the limiting part 22 can prevent rainwater from entering the interior of the guide wheel body and causing rust.

[0032] The connecting pin 3 includes a plunger 31, an external thread 32, and a handle 33. The connecting pin 3 preferably uses a self-resetting spring pin, which is commercially available. It has an internal spring; in its natural state, the plunger 31 is extended due to the spring's elasticity. The external thread 32 engages with the internal thread of the first connecting hole 121, allowing the connecting pin 3 to be threaded onto the connecting sleeve. The handle 33 is used to adjust the plunger 31; by pulling the handle 33 to overcome the spring's elasticity, the plunger 31 can be retracted.

[0033] Installation process: The crank handle 1 is fitted onto the fixing part 21 through the connecting sleeve 12, and the external thread 32 of the connecting pin 3 is tightened onto the internal thread of the first connecting hole 121, thereby fixing the connecting pin 3 onto the connecting sleeve 12. At this time, the plunger 31 of the connecting pin 3 extends into the second connecting hole 211 on the fixing part 21, thereby fixing the crank handle 1.

[0034] Disassembly process: Pull the handle 33 outward to overcome the spring force and retract the plunger 31. Then reverse the operation to remove the crank handle 1.

[0035] This utility model also discloses a quick-release guide wheel for RVs, the structure for controlling the lifting and lowering of the guide wheel adopts the aforementioned quick-release guide wheel crank handle for RVs.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the scope of the claims of the present invention should be within the protection scope of the present invention.

Claims

1. A quick-release guide wheel crank handle for a motorhome, comprising a crank handle and a fixing base, wherein a connecting sleeve is fixedly connected to the end of the crank handle, and the connecting sleeve has a polygonal through hole axially formed; the fixing base has a fixing part, the outline shape and size of which are consistent with the polygonal through hole formed on the connecting sleeve, and the connecting sleeve can be fitted onto the fixing part, characterized in that... It is also provided with a connecting pin, the connecting sleeve has a first connecting hole in the radial direction, and the fixing part has at least one second connecting hole. The connecting pin and the crank handle are detachably connected through the first connecting hole. The connecting pin is provided with an adjustable plunger. The plunger can move in and out of the second connecting hole to realize the unlocking and fixing of the crank handle and the fixing seat.

2. The quick-release guide wheel crank handle for RVs according to claim 1, characterized in that, The connecting pin is a self-resetting spring pin.

3. The quick-release guide wheel crank handle for RVs according to claim 2, characterized in that, The connecting pin is provided with a handle, which is connected to the plunger. A spring is provided inside the connecting pin. Under the elastic force of the spring, the plunger is in the extended state. By pulling the handle to overcome the elastic force of the spring, the plunger can be retracted.

4. The quick-release guide wheel crank handle for RVs according to claim 1, characterized in that, The connecting pin has an external thread, and the first connecting hole has an internal thread, with the external thread engaging with the internal thread of the first connecting hole.

5. The quick-release guide wheel crank handle for RVs according to claim 1, characterized in that, The fixed base also includes a limiting part. When the connecting sleeve is fitted onto the fixed part, the connecting sleeve abuts against the upper part of the limiting part, and the limiting part limits the crank handle.

6. The quick-release guide wheel crank handle for RVs according to claim 1, characterized in that, The fixing base has a third connecting hole below the second connecting hole, and the fixing part is connected to the lead screw of the guide wheel body through the third connecting hole.

7. The quick-release guide wheel crank handle for RVs according to claim 1, characterized in that, The crank handle has a crank handle body, which has an L-shaped structure.

8. The quick-release guide wheel crank handle for RVs according to claim 1, characterized in that, Each face of the polygonal part of the fixing part is provided with a second connecting hole.

9. The quick-release guide wheel crank handle for RVs according to claim 8, characterized in that, When the connecting sleeve is fitted onto the fixing part, the first connecting hole and its corresponding second connecting hole are coaxial.

10. A quick-release guide wheel for a motorhome, characterized in that, It includes the quick-release guide wheel crank handle for RVs as described in any one of claims 1-9.

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