Spare tire fixing device for travel trailer

Abstract

The utility model provides a spare tire fixing device for a trailer motor home. The spare tire fixing device comprises a supporting plate, two fixing frames, two tire positioning mechanisms, two elastic fastening mechanisms and two elastic supporting structures. The two fixing frames are symmetrically arranged up and down, the two fixing frames are detachably connected with the end face of the rear side of the supporting plate, and the left end and the right end of each fixing frame are each correspondingly provided with a mounting structure used for being connected with a motor home; the two elastic supporting structures are symmetrically arranged at the upper end and the lower end of the supporting plate and used for fixing the top and the bottom of a tire correspondingly. According to the spare tire fixing device for the trailer motor home, the problem that the fixing firmness of a spare tire is reduced due to the fact that the stability of the spare tire fixing device for fixing the spare tire is poor and continuous vibration easily causes gradual loosening of a bolt, a nut or other connecting pieces of the fixing device in the prior art is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of spare tire fixing of recreational vehicles, and in particular relates to a spare tire fixing device for towing recreational vehicles. Background Art

[0002] The spare tire mount hung at the rear of a trailer caravan is used to store the spare tire safely and securely at the rear of the vehicle. The mount is usually made of high-strength steel or aluminum alloy to ensure its durability and reliability under various road conditions. The spare tire mount is generally installed at the rear of the caravan, usually attached to the trailer frame or a solid part of the vehicle body. The installation location must ensure driving safety while being easy to access, and at the same time not affecting vehicle functions such as taillights and license plates. In environments with poor road conditions, frequent road vibrations will exert repeated mechanical pressure on the bolts, nuts and other fasteners of the mount. Since the spare tire mounting device in the related art has poor stability in fixing the spare tire, continuous vibrations can easily cause the bolts, nuts or other connectors of the mounting device to gradually loosen, thereby reducing the firmness of the spare tire fixation. Summary of the Invention

[0003] In view of this, the present invention aims to solve one of the related technical problems at least to a certain extent.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0005] A spare tire fixing device for a trailer caravan, comprising a support plate, two fixing frames, two tire positioning mechanisms, two elastic fastening mechanisms and two elastic supporting structures;

[0006] The two fixing brackets are symmetrically arranged in an upper and lower direction, and both fixing brackets are detachably connected to the rear end surface of the support plate. The left and right ends of each fixing bracket are respectively provided with a mounting structure for connecting to the RV;

[0007] The two elastic support structures are symmetrically arranged at the upper and lower ends of the support plate, and the two elastic support structures are used to fix the top and bottom of the tire respectively;

[0008] The two tire positioning mechanisms are symmetrically arranged, the support plate is located between the two tire positioning mechanisms, each tire positioning mechanism is connected to the support plate through an elastic fastening mechanism, and the tire positioning mechanism is used to fix the side of the tire.

[0009] Furthermore, the tire positioning mechanism includes a connecting rod, two positioning rods and four positioning rollers. The two positioning rods are symmetrically arranged at the upper and lower ends of the connecting rod. The cross-section of the connecting rod is C-shaped. The middle part of the connecting rod is connected to the elastic fastening mechanism. The cross-section of the positioning rod is arc-shaped. A positioning roller is correspondingly arranged at the front and rear ends of each positioning rod. The positioning roller is used to position the tire.

[0010] Furthermore, the positioning roller is covered with an anti-slip rubber sleeve.

[0011] Furthermore, the elastic fastening mechanism includes a fastening plate, two fastening screws, two compression springs and two locking nuts. The two fastening screws are arranged in parallel, one end of the fastening screw is threadedly connected to the support plate, and the other end of the fastening screw is connected to the fastening plate through a locking nut. The compression spring is sleeved on the fastening screw, and the compression spring is arranged between the fastening plate and the locking nut. The cross-section of the fastening plate is L-shaped, and the fastening plate is welded to the connecting rod.

[0012] Furthermore, the elastic support structure includes a supporting cross plate, a pad and a rubber base. The supporting cross plate is welded to the end of the supporting plate. The rubber base is arranged on the inner side of the supporting cross plate. The pad is arranged between the rubber base and the supporting cross plate. The rubber base is detachably connected to the supporting cross plate. The inner end face of the rubber base is provided with a positioning groove that can cooperate with the tire.

[0013] Furthermore, the mounting structure includes a thickened pad and a fixing bolt. The thickened pad is integrally connected to the fixing frame. The thickened pad is provided with an elongated hole, and the fixing bolt is arranged in the elongated hole.

[0014] Furthermore, each of the fixing brackets is connected to the support plate via two fastening screws.

[0015] Furthermore, two reinforcing ribs are provided on the inner side of the fastening plate.

[0016] Compared with the prior art, the spare tire fixing device for trailer RVs described in the present invention has the following advantages:

[0017] 1. The elastic fastening mechanism utilizes a compression spring to provide cushioning and shock absorption, effectively reducing the impact of road unevenness on the spare tire and preventing loosening due to vibration. As the vehicle vibrates and deforms during driving, the compression spring automatically adjusts the tightening force, ensuring the spare tire is always optimally secured and resists displacement or loosening. The use of a threaded connection and locknut makes the fastening mechanism easy to install and remove, and also facilitates proper tightening force adjustment to accommodate different tire sizes.

[0018] 2. The connecting rod and symmetrically arranged positioning rods provide precise lateral positioning for the tire, ensuring its correct position in the fixture. The positioning rollers help stabilize the tire's sides, preventing it from swaying during driving and improving overall stability. The non-slip rubber sleeves on the positioning rollers effectively increase friction, further preventing tire displacement due to vibration or vehicle bumps.

[0019] 3. The elastic support structure provides excellent shock absorption through the rubber base, absorbing vibrations and impacts during driving and protecting the tire from excessive vibration. By supporting the tire at the top and bottom, this structure ensures that the tire remains stable when subjected to irregular ground conditions, preventing it from sliding or shaking in the mount. The combination of the rubber base and pad increases friction, further locking the tire in place and enhancing the overall safety of the mount. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of a spare tire fixing device for a trailer caravan according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic structural diagram of the tire positioning mechanism according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic structural diagram of the fixing frame according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic structural diagram of the elastic fastening mechanism described in an embodiment of the present utility model.

[0025] Description of reference numerals:

[0026] 101. Support plate; 201. Support cross plate; 202. Rubber base; 301. Fixed frame; 401. Connecting rod; 402. Positioning rod; 403. Positioning roller; 501. Fastening screw; 502. Fastening pressure plate; 503. Reinforcing rib; 504. Compression spring; 505. Locking nut. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0031] A spare tire fixing device for a trailer caravan, such as Figure 1 As shown, it includes a support plate 101, two fixing frames 301, two tire positioning mechanisms, two elastic fastening mechanisms and two elastic support structures; the two fixing frames 301 are symmetrically arranged in the upper and lower parts, and the two fixing frames 301 are detachably connected to the rear end face of the support plate 101, and the left and right ends of each fixing frame 301 are respectively provided with a mounting structure for connecting to the RV; the two elastic support structures are symmetrically arranged at the upper and lower ends of the support plate 101, and the two elastic support structures are respectively used to fix the top and bottom of the tire; the two tire positioning mechanisms are symmetrically arranged in the left and right parts, and the support plate 101 is located between the two tire positioning mechanisms. Each tire positioning mechanism is connected to the support plate 101 through an elastic fastening mechanism, and the tire positioning mechanism is used to fix the side of the tire. The mounting structure includes a thickened pad and fixing bolts. The thickened pad is integrally connected to the fixing frame 301, and the thickened pad is provided with a long hole, and the fixing bolts are set in the long hole. Each fixing frame 301 is connected to the support plate 101 by two fastening screws.

[0032] like Figure 2As shown, the tire positioning mechanism includes a connecting rod 401, two positioning rods 402, and four positioning rollers 403. The two positioning rods 402 are symmetrically arranged at the upper and lower ends of the connecting rod 401. The connecting rod 401 has a C-shaped cross-section, and the middle portion of the connecting rod 401 is connected to the elastic fastening mechanism. The positioning rods 402 have an arc-shaped cross-section. Each positioning rod 402 has a corresponding positioning roller 403 at its front and rear ends, which is used to position the tire. In this embodiment, the positioning rollers 403 are covered with non-slip rubber sleeves. The connecting rod 401 and the symmetrically arranged positioning rods 402 provide precise lateral positioning for the tire, ensuring its correct position in the fixture. The positioning rollers 403 help secure the side of the tire, preventing it from swaying during driving and improving overall stability. The non-slip rubber sleeves on the positioning rollers 403 effectively increase friction, further preventing the tire from shifting due to vibration or vehicle bumps.

[0033] like Figure 4 As shown, the elastic fastening mechanism includes a fastening plate 502, two fastening screws 501, two compression springs 504, and two locking nuts 505. The two fastening screws 501 are arranged in parallel, one end of the fastening screw 501 is threadedly connected to the support plate 101, and the other end of the fastening screw 501 is connected to the fastening plate 502 via the locking nut 505. The compression spring 504 is sleeved on the fastening screw 501 and arranged between the fastening plate 502 and the locking nut 505. The cross-section of the fastening plate 502 is L-shaped, and the fastening plate 502 is welded to the connecting rod 401. Two reinforcing ribs 503 are provided on the inner side of the fastening plate 502. The elastic fastening mechanism uses the compression spring 504 to provide a buffering and shock-absorbing effect, which can effectively reduce the impact on the spare tire when the road surface is uneven and prevent loosening due to vibration. As the vehicle vibrates and deforms during driving, the compression spring 504 automatically adjusts its tightening force, ensuring the spare tire is always optimally secured and resists displacement or loosening. The use of a threaded connection and lock nut 505 makes the fastening mechanism easy to install and remove, while also facilitating proper tightening force adjustment to accommodate tires of varying sizes.

[0034] The elastic support structure includes a supporting cross plate 201, a pad and a rubber base 202. The supporting cross plate 201 is welded to the end of the supporting plate 101. The rubber base 202 is arranged on the inner side of the supporting cross plate 201. The pad is arranged between the rubber base 202 and the supporting cross plate 201. The rubber base 202 and the supporting cross plate 201 are detachably connected. The inner end face of the rubber base 202 is provided with a positioning groove that can cooperate with the tire. The elastic support structure provides good shock absorption performance through the rubber base 202, which can absorb vibrations and impacts during vehicle driving and protect the tire from excessive vibration. The structure ensures that the tire remains stable when affected by irregular ground by supporting the top and bottom of the tire, preventing the tire from sliding or shaking in the fixing frame 301. The combination of the rubber base 202 and the pad increases friction and further locks the position of the tire, thereby improving the overall safety of the fixing device.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A spare tire fixing device for a trailer caravan, characterized by: The invention comprises a support plate (101), two fixing frames (301), two tire positioning mechanisms, two elastic fastening mechanisms and two elastic supporting structures; the two fixing frames (301) are symmetrically arranged in an upper and lower direction, and the two fixing frames (301) are detachably connected to the rear end surface of the support plate (101); and the left and right ends of each fixing frame (301) are respectively provided with a mounting structure for connecting to a recreational vehicle; The two elastic support structures are symmetrically arranged at the upper and lower ends of the support plate (101), and the two elastic support structures are used to fix the top and bottom of the tire respectively; The two tire positioning mechanisms are arranged symmetrically on the left and right, the support plate (101) is located between the two tire positioning mechanisms, each of the tire positioning mechanisms is connected to the support plate (101) via an elastic fastening mechanism, and the tire positioning mechanisms are used to fix the side of the tire.

2. The spare tire fixing device for a trailer caravan according to claim 1, characterized in that: The tire positioning mechanism comprises a connecting rod (401), two positioning rods (402) and four positioning rollers (403). The two positioning rods (402) are symmetrically arranged at the upper and lower ends of the connecting rod (401). The cross section of the connecting rod (401) is C-shaped. The middle part of the connecting rod (401) is connected to the elastic fastening mechanism. The cross section of the positioning rod (402) is arc-shaped. A positioning roller (403) is correspondingly arranged at the front and rear ends of each positioning rod (402). The positioning roller (403) is used to position the tire.

3. The spare tire fixing device for a trailer caravan according to claim 2, characterized in that: The positioning roller (403) is externally sleeved with an anti-slip rubber sleeve.

4. The spare tire fixing device for a trailer caravan according to claim 2, characterized in that: The elastic fastening mechanism comprises a fastening plate (502), two fastening screws (501), two compression springs (504) and two locking nuts (505). The two fastening screws (501) are arranged in parallel. One end of the fastening screw (501) is threadedly connected to the support plate (101), and the other end of the fastening screw (501) is connected to the fastening plate (502) through a locking nut (505). The compression spring (504) is sleeved on the fastening screw (501). The compression spring (504) is arranged between the fastening plate (502) and the locking nut (505). The cross section of the fastening plate (502) is L-shaped. The fastening plate (502) is welded to the connecting rod (401).

5. A spare tire fixing device for a trailer caravan according to any one of claims 1 to 4, characterized in that: The elastic support structure comprises a supporting transverse plate (201), a pad and a rubber base (202); the supporting transverse plate (201) is welded to the end of the supporting plate (101); the rubber base (202) is arranged on the inner side of the supporting transverse plate (201); the pad is arranged between the rubber base (202) and the supporting transverse plate (201); the rubber base (202) and the supporting transverse plate (201) are detachably connected; and the inner end surface of the rubber base (202) is provided with a positioning groove capable of cooperating with a tire.

6. The spare tire fixing device for a trailer caravan according to claim 5, characterized in that: The mounting structure comprises a thickened pad and a fixing bolt, wherein the thickened pad is integrally connected to the fixing frame (301), the thickened pad is provided with an elongated hole, and the fixing bolt is arranged in the elongated hole.

7. The spare tire fixing device for a trailer caravan according to claim 5, characterized in that: Each of the fixing frames (301) is connected to the support plate (101) via two fastening screws.

8. The spare tire fixing device for a trailer caravan according to claim 4, characterized in that: Two reinforcing ribs (503) are provided on the inner side of the fastening pressing plate (502).

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