An anti-corrosion trailer hitch swivel lock
The design of the support, adjustment, and rotation mechanism solves the problem of the trailer bolt rotary lock's inability to adjust its position, enabling flexible position adjustment and improving practicality and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO GUOXIU HARDWARE CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-26
AI Technical Summary
The tow hook rotary lock cannot adjust the distance between two vehicles, reducing its practicality.
A trailer hitch rotary lock was designed, comprising a support mechanism, an adjustment mechanism, and a rotation mechanism. Through the coordinated use of these mechanisms, the position of the trailer hitch rotary lock can be adjusted.
The position adjustment of the trailer hitch rotary lock has been achieved, improving its practicality and safety.
Smart Images

Figure CN224408843U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of trailer bolt rotary lock technology, specifically a corrosion-resistant trailer bolt rotary lock. Background Technology
[0002] Trailer bolt turn locks are key locking devices used to connect and secure trailers to towing vehicles, preventing trailers from accidentally detaching. Their core function is to lock and unlock the trailer bolts through rotation, ensuring the safety and reliability of trailer transportation.
[0003] A trailer hitch turn lock is a mechanical lock installed on a towing vehicle or trailer. By rotating the lock cylinder or latch, the trailer hitch (trailer hook) is tightly connected to the towing device, forming a rigid connection structure. This prevents the trailer from falling off due to vibration, bumps, or other reasons during driving. Trailer hitch turn locks are generally installed on the vehicle using a mounting bracket. However, trailer hitch turn locks do not have an adjustment function and cannot adjust the distance between two vehicles, thus reducing their practicality. Utility Model Content
[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a corrosion-resistant trailer hitch rotary lock that has the advantage of being able to adjust the position of the trailer hitch rotary lock, thus solving the problem that the trailer hitch rotary lock does not have an adjustment function and cannot adjust the distance between two vehicles.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant trailer hitch rotary lock, comprising a trailer hitch rotary lock and a mounting base, wherein the mounting base is installed on the left side of the trailer hitch rotary lock, and a bolt is installed in the middle of the mounting base.
[0006] A support mechanism is installed on the right side of the mounting base, and the support mechanism is used to install the trailer bolt rotary lock;
[0007] An adjustment mechanism and a rotation mechanism are installed on the right side of the mounting base. The adjustment mechanism and the rotation mechanism are used to adjust the position of the trailer bolt rotary lock.
[0008] In a preferred embodiment of this utility model, the support mechanism includes a mounting groove, a mounting rod, and a mounting plate. One side of the mounting plate is fixedly mounted to the surface of the trailer bolt rotary lock, the left side of the mounting groove is fixedly mounted to the right side of the mounting base, the surface of the mounting rod is movably mounted to the inner wall of the mounting groove, and the right side of the mounting rod is fixedly mounted to the left side of the mounting plate.
[0009] In a preferred embodiment of this invention, the adjusting mechanism includes a threaded rod, a threaded sleeve, and a driven wheel. The right side of the threaded sleeve is fixedly installed on the left side of the trailer bolt rotary lock. The left side of the threaded rod is movably connected to the right side of the mounting base via a rotating shaft. The middle part of the driven wheel is fixedly installed on the surface of the threaded rod.
[0010] In a preferred embodiment of this utility model, the rotating mechanism includes a support plate, a handle, and a drive wheel. The left side of the support plate is fixedly installed on the right side of the mounting base, the surface of the handle is movably installed on the middle part of the support plate, the top of the drive wheel is fixedly installed on the bottom of the handle, the drive wheel and the driven wheel are connected by meshing, and a limit rod is installed in the middle of the support plate.
[0011] In a preferred embodiment of this invention, the limiting rod is movably mounted on the middle of the support plate, and a connecting rope is mounted on the top of the limiting rod, with one end of the connecting rope mounted on the right side of the mounting base.
[0012] As a preferred embodiment of this utility model, the top of each drive wheel is provided with multiple positioning holes, and the bottom of the limiting rod is movably installed in the inner cavity of the positioning hole.
[0013] In a preferred embodiment of this invention, the surface of the threaded rod is connected to the middle part of the threaded sleeve by a thread.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] 1. This utility model solves the problem of not being able to adjust the position of the trailer hitch turn lock by setting up a support mechanism, an adjustment mechanism and a rotation mechanism in combination. The support mechanism can install the trailer hitch turn lock, and the adjustment mechanism and rotation mechanism can adjust the position of the trailer hitch turn lock. This achieves the effect of adjusting the position of the trailer hitch turn lock by using the adjustment mechanism and rotation mechanism in combination.
[0016] 2. This utility model installs the trailer bolt rotary lock by setting up a support mechanism, with the trailer bolt rotary lock mounted on the mounting plate, and the mounting plate mounted on the mounting rod.
[0017] 3. This utility model sets up an adjustment mechanism and a rotation mechanism. The adjustment mechanism is installed on the trailer bolt rotary lock. The rotation mechanism rotates, which drives the adjustment mechanism to move. The adjustment mechanism drives the trailer bolt rotary lock to adjust its position. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the supporting mechanism structure;
[0020] Figure 3 This is a schematic diagram of the adjustment mechanism.
[0021] Figure 4 This is a schematic diagram of the rotating mechanism.
[0022] In the diagram: 1. Trailer bolt rotary lock; 2. Mounting base; 3. Bolt; 4. Support mechanism; 401. Mounting groove; 402. Mounting rod; 403. Mounting plate; 5. Adjustment mechanism; 501. Threaded rod; 502. Threaded sleeve; 503. Driven wheel; 6. Rotation mechanism; 601. Support plate; 602. Handle; 603. Drive wheel; 7. Limit rod; 8. Connecting rope; 9. Positioning port. Detailed Implementation
[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.
[0027] Example 1
[0028] Reference Figure 1-4 This is the first embodiment of the present invention, which provides a corrosion-resistant trailer hitch rotary lock, including a trailer hitch rotary lock 1 and a mounting base 2. The mounting base 2 is installed on the left side of the trailer hitch rotary lock 1, and a bolt 3 is installed in the middle of the mounting base 2.
[0029] A support mechanism 4 is installed on the right side of the mounting base 2. The support mechanism 4 is used to install the trailer bolt rotary lock 1.
[0030] An adjustment mechanism 5 and a rotation mechanism 6 are installed on the right side of the mounting base 2. The adjustment mechanism 5 and the rotation mechanism 6 are used to adjust the position of the trailer bolt rotary lock 1.
[0031] Specifically, the trailer bolt rotary lock 1 is installed in the mounting mechanism, the mounting mechanism limits the installation of the trailer bolt rotary lock 1, the adjustment mechanism 5 adjusts the position of the trailer bolt rotary lock 1, and the rotation mechanism 6 drives the adjustment mechanism 5.
[0032] Furthermore, the trailer bolt rotary lock 1 is installed through the installation mechanism. When the trailer bolt rotary lock 1 needs to be adjusted in position, the rotation mechanism 6 is driven, the rotation mechanism 6 drives the adjustment mechanism 5, and the adjustment mechanism 5 drives the trailer bolt rotary lock 1 to adjust in position.
[0033] Example 2
[0034] The second embodiment of this utility model provides a corrosion-resistant trailer hitch rotary lock 1. The support mechanism 4 includes a mounting groove 401, a mounting rod 402, and a mounting plate 403. One side of the mounting plate 403 is fixedly mounted on the surface of the trailer hitch rotary lock 1, the left side of the mounting groove 401 is fixedly mounted on the right side of the mounting base 2, the surface of the mounting rod 402 is movably mounted on the inner wall of the mounting groove 401, and the right side of the mounting rod 402 is fixedly mounted on the left side of the mounting plate 403.
[0035] Specifically, the trailer bolt rotary lock 1 is installed on the mounting plate 403, and the mounting plate 403 is installed on the mounting rod 402, thereby installing the trailer bolt rotary lock 1.
[0036] Furthermore, the trailer bolt rotary lock 1 is mounted on the mounting plate 403, the mounting plate 403 is mounted on the mounting rod 402, the mounting rod 402 is mounted in the mounting groove 401, and the mounting rod 402 can move effectively in the mounting groove 401, thereby installing the trailer bolt rotary lock 1.
[0037] Example 3
[0038] The second embodiment of this utility model provides a corrosion-resistant trailer hitch rotary lock 1. The adjusting mechanism 5 includes a threaded rod 501, a threaded sleeve 502, and a driven wheel 503. The right side of the threaded sleeve 502 is fixedly installed on the left side of the trailer hitch rotary lock 1. The left side of the threaded rod 501 is movably connected to the right side of the mounting base 2 via a rotating shaft. The middle part of the driven wheel 503 is fixedly installed on the surface of the threaded rod 501. The rotating mechanism 6 includes a support plate 601, a handle 602, and a drive wheel 603. The left side of the 1 is fixedly installed on the right side of the mounting base 2. The surface of the handle 602 is movably installed on the middle part of the support plate 601. The top of the drive wheel 603 is fixedly installed on the bottom of the handle 602. The drive wheel 603 and the driven wheel 503 are connected by meshing. The middle part of the support plate 601 is equipped with a limit rod 7. The top of the drive wheel 603 is provided with multiple positioning holes 9. The bottom of the limit rod 7 is movably installed in the inner cavity of the positioning hole 9. The surface of the threaded rod 501 is connected to the middle part of the threaded sleeve 502 by thread.
[0039] Specifically, the adjustment mechanism 5 is installed on the trailer bolt rotary lock 1. The rotation mechanism 6 rotates, which in turn drives the adjustment mechanism 5 to move, thereby adjusting the position of the trailer bolt rotary lock 1.
[0040] Furthermore, rotating the drive wheel 603 causes the driven wheel 503 to rotate, which in turn causes the threaded rod 501 to rotate. The threaded rod 501, through a threaded connection, causes the threaded sleeve 502 to move. The threaded sleeve 502 then causes the trailer bolt rotary lock 1 to adjust its position. The limit rod 7 is installed in the positioning port 9, and the limit plate, in cooperation with the positioning port 9, limits the drive wheel 603.
[0041] Working principle:
[0042] First, turn the handle 602. The handle 602 drives the drive wheel 603 to rotate, which in turn drives the driven wheel 503 to rotate. The driven wheel 503 drives the threaded rod 501 to rotate. The threaded rod 501 drives the threaded sleeve 502 to move through the threaded connection. The threaded sleeve 502 drives the trailer bolt rotary lock 1 to adjust its position. Then, the limit rod 7 is installed in the inner cavity of the positioning port 9 through the support plate 601. The limit rod 7 and the positioning port 9 cooperate to limit the drive wheel 603. The mounting base 2 is connected to the limit rod 7 through the connecting rope 8.
[0043] In summary, the adjustment mechanism and the rotating mechanism work together to achieve the effect of adjusting the position of the trailer bolt rotary lock.
[0044] The trailer bolt rotary lock, threaded rod, drive wheel, and driven wheel used in this application can be additionally equipped with protective measures of common knowledge in this technical field under different usage environments, including but not limited to the following methods, such as protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing, which are commonly used by those skilled in the art.
[0045] All materials in this application are coated with anti-corrosion paint.
[0046] It should be noted that the trailer bolt rotary lock, threaded rod, drive wheel and driven wheel are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method and other methods of the equipment, as well as the materials of each accessory and the selection of various parameters are common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.
[0047] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.
[0048] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.
[0049] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.
[0050] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A corrosion resistant trailer hitch ball swivel lock characterized by: It includes a trailer hitch rotary lock (1) and a mounting base (2), the mounting base (2) being installed on the left side of the trailer hitch rotary lock (1), and a bolt (3) being installed in the middle of the mounting base (2). A support mechanism (4) is installed on the right side of the mounting base (2), and the support mechanism (4) is used to install the trailer bolt rotary lock (1); An adjustment mechanism (5) is installed on the right side of the mounting base (2), and a rotating mechanism (6) is installed on the right side of the mounting base (2). The adjustment mechanism (5) and the rotating mechanism (6) are used to adjust the position of the trailer bolt rotary lock (1).
2. A corrosion resistant trailer hitch ball swivel lock as defined in claim 1 wherein: The support mechanism (4) includes a mounting groove (401), a mounting rod (402), and a mounting plate (403). One side of the mounting plate (403) is fixedly mounted on the surface of the trailer bolt rotary lock (1). The left side of the mounting groove (401) is fixedly mounted on the right side of the mounting base (2). The surface of the mounting rod (402) is movably mounted on the inner wall of the mounting groove (401). The right side of the mounting rod (402) is fixedly mounted on the left side of the mounting plate (403).
3. The corrosion-resistant trailer bolt rotary lock according to claim 1, characterized in that: The adjustment mechanism (5) includes a threaded rod (501), a threaded sleeve (502), and a driven wheel (503). The right side of the threaded sleeve (502) is fixedly installed on the left side of the trailer bolt rotary lock (1). The left side of the threaded rod (501) is movably connected to the right side of the mounting base (2) via a rotating shaft. The middle part of the driven wheel (503) is fixedly installed on the surface of the threaded rod (501).
4. The corrosion-resistant trailer bolt rotary lock according to claim 3, characterized in that: The rotating mechanism (6) includes a support plate (601), a handle (602), and a drive wheel (603). The left side of the support plate (601) is fixedly installed on the right side of the mounting base (2). The surface of the handle (602) is movably installed on the middle part of the support plate (601). The top of the drive wheel (603) is fixedly installed on the bottom of the handle (602). The drive wheel (603) and the driven wheel (503) are connected by meshing. A limit rod (7) is installed in the middle part of the support plate (601).
5. A corrosion-resistant trailer bolt rotary lock according to claim 4, characterized in that: The limiting rod (7) is movably mounted on the middle part of the support plate (601), and a connecting rope (8) is mounted on the top of the limiting rod (7). One end of the connecting rope (8) is mounted on the right side of the mounting base (2).
6. The corrosion-resistant trailer bolt rotary lock according to claim 5, characterized in that: The top of each drive wheel (603) is provided with multiple positioning ports (9), and the bottom of the limiting rod (7) is movably installed in the inner cavity of the positioning port (9).
7. A corrosion-resistant trailer bolt rotary lock according to claim 3, characterized in that: The surface of the threaded rod (501) is connected to the middle of the threaded sleeve (502) by a thread.