Spherical towing device

Abstract

The utility model relates to the technical field of towing devices, in particular to a spherical towing device which comprises a connecting piece used for being connected with a rear axle of a vehicle, a towing support is detachably and fixedly installed on the connecting piece, a spherical hook is installed on the towing support, a spring bolt seat is fixedly arranged on the towing support, and the spring bolt seat is fixedly connected with the spherical hook. A spring bolt is rotatably arranged on the spring bolt seat, one end of the spring bolt is rotatably connected with the spring bolt seat, and when the spring bolt rotates to the other end to be arranged above the spherical hook vertically, the spring bolt is locked and fixed with the spring bolt seat through a locking mechanism. The beneficial effects of the utility model are that the spring bolt and the spring bolt seat are rotatably connected and are locked through the locking mechanism, when an adapter needs to be hung on the spherical hook, the locking mechanism is loosened to turn over the spring bolt, enough space is provided for hanging of the adapter, and then the spring bolt is turned over reversely to enable the other end of the spring bolt to be arranged above the adapter vertically, so that the adapter can be hung on the spherical hook. And the adapter is convenient to operate and safe and reliable to use.

Description

Technical Field

[0001] The utility model relates to the technical field of towing devices, in particular to a spherical towing device. Background Art

[0002] The trailer hitch is a very important part of the vehicle towing connector. The existing ball hitch consists of a spherical hook and a connecting rod. The trailer hitch is fixed to the towing vehicle through the connecting rod, and the adapter on the trailer is hung on the ball head to achieve towing. The adapter on the trailer is hung on the spherical hook to achieve towing.

[0003] In some of the existing ball hitches, there are no components to restrict the adapter hanging on the spherical hook. For example, in the existing patent with the patent application number 202121984981.X, it cannot prevent the adapter from falling off the ball head, which may cause safety accidents during use. In the existing anti-disconnection towing devices, elastic buckles or chains are installed on the connecting rod. By buckling the elastic buckle on the ball head or locking the chain on the ball head, the adapter is prevented from falling off the ball head. However, the manufacturing processes of these products are complicated and they are prone to looseness, causing potential safety hazards. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a spherical towing device to solve the above problems existing in the prior art.

[0005] The technical solution of the utility model to solve the above technical problems is as follows: A spherical towing device includes a connecting piece for connecting with the vehicle rear axle. A towing bracket is detachably and fixedly installed on the connecting piece. A spherical hook is installed on the towing bracket. A lock tongue seat is fixedly arranged on the towing bracket. A lock tongue is rotatably arranged on the lock tongue seat. One end of the lock tongue is rotatably connected with the lock tongue seat. When the lock tongue rotates to the other end and is positioned directly above the spherical hook, the lock tongue is locked and fixed with the lock tongue seat through a locking mechanism.

[0006] The beneficial effect of the utility model is that the lock tongue is rotatably connected with the lock tongue seat and is locked through a locking mechanism. When it is necessary to hang the adapter on the spherical hook, the locking mechanism is loosened to make the lock tongue flip, providing enough space for hanging the adapter. Then, the lock tongue is flipped back to make the other end of the lock tongue positioned directly above the adapter to prevent the adapter from falling off. The operation is convenient and the use is safe and reliable.

[0007] On the basis of the above technical solution, the utility model can be further improved as follows.

[0008] Further, the number of the lock tongue seats is two, and the two lock tongue seats are arranged side by side at intervals. One end of the lock tongue is arranged between the two lock tongue seats and is rotatably connected to the two lock tongue seats through a fixed shaft. When the lock tongue rotates to the other end and is placed vertically above the spherical hook, the middle part of the lock tongue is locked and fixed to the lock tongue seat through a locking mechanism.

[0009] The beneficial effect of adopting the above further scheme is that the two lock tongue seats clamp the lock tongue, limit the left and right movement of the lock tongue, guide the rotation of the lock tongue, and ensure the stability of the installation of the lock tongue.

[0010] Further, the locking mechanism includes a movable pin. A through hole penetrating both sides of the lock tongue is provided in the middle part of the lock tongue. First limiting holes matching the through hole are provided in the upper parts of the two lock tongue seats. When the lock tongue rotates to the other end and is placed vertically above the spherical hook, the through hole is communicated with the two first limiting holes, and the movable pin is inserted into the through hole and the two first limiting holes.

[0011] The beneficial effect of adopting the above further scheme is that the locking of the lock tongue seat and the lock tongue is realized by inserting the movable pin into the through hole and the first limiting hole, and the structure is simple and the operation is convenient.

[0012] Further, a fixed pin head is fixedly provided at one end of the movable pin, and an anti - detachment limiting member is connected to the other end of the movable pin after the other end of the movable pin extends out of the first limiting hole.

[0013] The beneficial effect of adopting the above further scheme is that a fixed pin head is arranged at one end of the movable pin and an anti - detachment limiting member is arranged at the other end, which can limit the movable pin and prevent the movable pin from falling off.

[0014] Further, an adjustment hole penetrating the upper and lower surfaces of the lock tongue is provided at the end of the lock tongue far from the lock tongue seat, and a pressing rod capable of adjusting along the axis direction of the adjustment hole is arranged in the adjustment hole.

[0015] The beneficial effect of adopting the above further scheme is that by setting a pressing rod whose position can be adjusted, the adapter can be pressed by the pressing rod, further ensuring the stability of the connection between the spherical hook and the adapter.

[0016] Further, the lower end surface of the pressing rod is a concave arc surface.

[0017] The beneficial effect of adopting the above further scheme is that the adapter is a hemispherical structure with a spherical groove matching the spherical hook at the bottom. The lower end surface of the pressing rod adopts an arc surface, which matches the upper surface of the adapter, increasing the pressing area and pressing strength.

[0018] Further, a connecting shaft is fixedly provided at the bottom end of the spherical hook. The connecting shaft is provided with an external thread. A connecting hole is provided on the towing bracket. One end of the connecting shaft away from the spherical hook passes through and extends out of the connecting hole and is threadedly connected with a locking nut.

[0019] The beneficial effect of adopting the above further scheme is that the spherical hook is detachably fixed on the towing bracket by the connecting shaft and the locking nut, and the installation and disassembly are convenient.

[0020] Further, the connecting member includes a U-shaped square groove body. The two side walls of the U-shaped square groove body are vertically arranged. The U-shaped square groove body is provided with a connecting portion for connecting with the vehicle. The towing bracket is arranged between the two side walls of the U-shaped square groove body. A plurality of second limiting holes are arranged on the two side walls of the U-shaped square groove body at intervals from bottom to top. The towing bracket is provided with mounting holes penetrating through both sides of the towing bracket. When the two ends of the mounting hole are respectively communicated with the two opposite second limiting holes on both sides, a long pin shaft is inserted into the communicated mounting hole and the second limiting hole.

[0021] The beneficial effect of adopting the above further scheme is that the adjustment of the horizontal height of the towing bracket can be realized through the plurality of second limiting holes arranged, so that the towing device can adapt to different types of trailers, and the application range is wide.

[0022] Further, the number of the mounting holes is two. The two mounting holes are arranged at intervals up and down. The plurality of second limiting holes on the two side walls of the U-shaped square groove body are arranged at equal intervals, and the distance between adjacent two second limiting holes is the same as the distance between the two mounting holes. The number of the long pin shafts is two. When the two ends of the two mounting holes are respectively communicated with the two opposite second limiting holes on both sides, the two long pin shafts are respectively inserted into the communicated mounting holes and the second limiting holes.

[0023] The beneficial effect of adopting the above further scheme is that the connection between the connecting member and the trailer is realized through two long pin shafts, ensuring the connection strength.

[0024] Further, the towing bracket includes a towing base and towing side walls respectively fixedly arranged on both sides of the towing base. The spherical hook and the lock tongue seat are both fixed on the towing base. The mounting holes are arranged on the towing side walls.

[0025] The beneficial effect of adopting the above further scheme is that the mounting holes are arranged on the towing side walls, avoiding the need to drill through the towing base, facilitating drilling and reducing the processing difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the present invention;

[0027] Figure 2 It is a left side axial view of the trailer bracket installation structure in the utility model;

[0028] Figure 3 It is a right side axial view of the trailer bracket installation structure in the utility model;

[0029] Figure 4 It is a lower axial view of the trailer bracket installation structure in the utility model;

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Trailer bracket; 2. Ball hook; 3. Lock tongue seat; 4. Lock tongue; 5. Fixed shaft; 6. Movable pin; 7. Reinforcement rib; 8. First limit hole; 9. Fixed pin head; 10. Anti-slip limit piece; 11. Adjustment hole; 12. Clamping rod; 13. Arc surface; 14. Connecting shaft; 15. Connecting hole; 16. Locking nut; 17. U-shaped square trough; 18. Connecting part; 19. Second limit hole; 20. Mounting hole; 21. Trailer base; 22. Trailer side wall. DETAILED DESCRIPTION

[0032] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, an embodiment of the utility model includes a connecting member for connecting to a rear axle of a vehicle, a trailer bracket 1 is detachably fixedly mounted on the connecting member, a spherical hook 2 is mounted on the trailer bracket 1, a locking tongue seat 3 is fixedly provided on the trailer bracket 1, a locking tongue 4 is rotatably provided on the locking tongue seat 3, one end of the locking tongue 4 is rotatably connected to the locking tongue seat 3, and when the locking tongue 4 is rotated to the other end and placed vertically above the spherical hook 2, the locking tongue 4 is locked and fixed to the locking tongue seat 3 through a locking mechanism.

[0034] like Figure 2 , Figure 3 , Figure 4 As shown, the trailer bracket 1 includes a trailer base 21 and trailer side walls 22 fixedly arranged on both sides of the trailer base 21, the two trailer side walls 22 are arranged opposite to each other, and the two trailer side walls 22 protrude from the rear side of the trailer base 21, so as to facilitate the trailer base 21 to avoid the position of the first limiting hole 8 and prevent the first limiting hole 8 from passing through the trailer base 21. A reinforcing rib 7 is fixedly arranged on the rear side of the trailer base 21, and the two ends of the reinforcing rib 7 are fixedly connected to the two trailer side walls 22, so as to improve the connection strength between the trailer base 21 and the trailer side walls 22.

[0035] The number of the lock tongue seats 3 is two. The two lock tongue seats 3 are arranged side by side at intervals. The bottoms of the two lock tongue seats 3 are connected to one end of the lock tongue 4. One end of the lock tongue 4 is arranged between the two lock tongue seats 3 and is rotatably connected to the two lock tongue seats 3 through a fixed shaft 5. When the lock tongue 4 rotates to the other end and is placed vertically above the spherical hook 2, the middle part of the lock tongue 4 is locked and fixed to the lock tongue seat 3 through a locking mechanism. The two lock tongue seats 3 clamp the lock tongue 4 to limit the left and right movement of the lock tongue 4 and guide the rotation of the lock tongue 4 to ensure the stability of the installation of the lock tongue 4.

[0036] In the embodiment, the lock tongue seat 3 is arranged near the rear side of the towing base 21 and is located in the middle of the towing base 21. An avoidance groove is arranged in the middle of the reinforcing rib 7 to facilitate that the lock tongue 4 will not be blocked when the lock tongue 4 rotates.

[0037] One end of the lock tongue 4 is a connecting part 18, and the other end is a pressing part. The connecting part 18 is perpendicular to the pressing part. The connecting part 18 is arranged between the two lock tongue seats 3, and the pressing part is used to limit the adapter.

[0038] As Figure 1 shown, in the embodiment of the present utility model, the connecting piece includes a U-shaped square groove body 17. The two side walls of the U-shaped square groove body 17 are arranged vertically. The outer wall of the groove bottom of the U-shaped square groove body 17 faces the rear axle of the vehicle. A connecting part 18 for connecting with the vehicle is arranged on the U-shaped square groove body 17. In the embodiment, the connecting part 18 is a connecting plate. The two side walls of the U-shaped square groove body 17 extend towards the outer wall of the groove bottom of the U-shaped square groove body 17 and protrude and are fixedly connected to the connecting plate. A plurality of fixing holes are arranged on the connecting plate. The connecting plate is detachably and fixedly connected to the rear axle of the vehicle through bolts passing through the fixing holes.

[0039] The towing bracket 1 is arranged between the two side walls of the U-shaped square groove body 17. A plurality of second limiting holes 19 are arranged on the two side walls of the U-shaped square groove body 17 at intervals from bottom to top. The second limiting holes 19 on the two side walls of the U-shaped square groove body 17 are arranged in one-to-one correspondence and are at the same horizontal height in one-to-one correspondence. An installation hole 20 penetrating through both sides of the towing bracket 1 is arranged on the towing bracket 1. The installation hole 20 is arranged on the towing side wall 22, avoiding the need to penetrate the towing base 21, which is convenient for drilling and reduces the processing difficulty. When the two ends of the installation hole 20 are respectively communicated with the relatively second limiting holes 19 on both sides, a long pin shaft is inserted into the communicated installation hole 20 and the second limiting hole 19.

[0040] One end of the long pin shaft is provided with a pin head, and the other end is limited by an anti - detachment limiting member 10. In this embodiment, the anti - detachment limiting member 10 is an elastic pin, and the elastic pin is inserted into the side wall of the long pin shaft for limiting.

[0041] Furthermore, the number of the mounting holes 20 is two, and the two mounting holes 20 are arranged at intervals up and down. A plurality of second limiting holes 19 on both side walls of the U - shaped square groove body 17 are arranged at equal intervals, and the distance between two adjacent second limiting holes 19 is the same as the distance between the two mounting holes 20. The number of the long pin shafts is two. When the two ends of the two mounting holes 20 are respectively communicated with two opposite second limiting holes 19 on both sides, the two long pin shafts are respectively inserted into the communicated mounting holes 20 and the second limiting holes 19. The connection between the connecting piece and the trailer is realized through two long pin shafts, ensuring the strength of the connection.

[0042] In an embodiment of the present utility model, the locking mechanism includes a movable pin 6. A through - hole penetrating both sides of the lock tongue 4 is provided in the middle of the lock tongue 4. First limiting holes 8 matching the through - hole are provided in the upper parts of the two lock tongue seats 3. When the lock tongue 4 rotates to the other end and is placed directly above the spherical hook 2, the through - hole is communicated with the two first limiting holes 8, and the movable pin 6 is inserted into the through - hole and the two first limiting holes 8. The locking of the lock tongue seat 3 and the lock tongue 4 is realized by inserting the movable pin 6 into the through - hole and the first limiting holes 8, with a simple structure and convenient operation.

[0043] In order to prevent the detachment of the movable pin 6, a fixed pin head 9 is fixedly provided at one end of the movable pin 6, and an anti - detachment limiting member 10 is connected to the other end of the movable pin 6 after the other end of the movable pin 6 extends out of the first limiting hole 8. In this embodiment, the anti - detachment limiting member 10 is an elastic pin, and the elastic pin is inserted into the side wall of the long pin shaft for limiting.

[0044] In an embodiment of the present utility model, an adjustment hole 11 penetrating the upper and lower surfaces of the lock tongue 4 is provided at one end of the lock tongue 4 away from the lock tongue seat 3. A pressing rod 12 that can be adjusted along the axial direction of the adjustment hole 11 is provided in the adjustment hole 11, and the lower end surface of the pressing rod 12 is a concave arc surface 13. By providing the pressing rod 12 whose position can be adjusted, the adapter can be pressed by the pressing rod 12, further ensuring the stability of the connection between the spherical hook 2 and the adapter. The adapter is a hemispherical structure with a spherical groove matching the spherical hook 2 at the bottom. The lower end surface of the pressing rod 12 adopts an arc surface 13, which matches the upper surface of the adapter, increasing the pressing area and pressing strength.

[0045] In an embodiment of the present utility model, the adjustment hole 11 is a threaded hole, the pressing rod 12 is a threaded rod, and the pressing rod 12 is threadedly connected to the threaded hole. By rotating the pressing rod 12, the pressing rod 12 moves up and down in the vertical direction. In another embodiment of the present utility model, the adjustment hole 11 is a through hole, a adjusting nut is fixedly arranged on the upper surface of the locking tongue 4, the inner ring of the adjusting nut communicates with the through hole, the pressing rod 12 is a threaded rod, and the pressing rod 12 is threadedly connected to the adjusting nut. This embodiment avoids drilling threaded holes in the locking tongue 4 and reduces the manufacturing difficulty.

[0046] A connecting shaft 14 is fixedly arranged at the bottom end of the spherical hook 2. A limit seat is arranged on one end of the connecting shaft 14 connecting the spherical hook 2, and the limit seat presses against the upper surface of the trailer base 21. The connecting shaft 14 is provided with an external thread, the trailer bracket 1 is provided with a connecting hole 15, and one end of the connecting shaft 14 away from the spherical hook 2 passes through and extends out of the connecting hole 15 and is threadedly connected to a locking nut 16. The spherical hook 2 is detachably fixed on the trailer bracket 1 by the connecting shaft 14 and the locking nut 16, and the installation and disassembly are convenient.

[0047] In the present utility model, the locking tongue 4 is rotatably connected to the locking tongue seat 5 and is locked by a locking mechanism. When it is necessary to hang the adapter on the spherical hook 2, the locking mechanism is loosened to make the locking tongue 4 flip, providing enough space for hanging the adapter. Then, the locking tongue 4 is flipped in the reverse direction so that the other end of the locking tongue 4 is placed vertically above the adapter to prevent the adapter from falling off. The operation is convenient and the use is safe and reliable.

[0048] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0049] In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0050] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "attachment", "fixation", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0051] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0052] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A spherical towing device, characterized in that, It includes a connecting piece for connecting with the rear axle of a vehicle. A towing bracket (1) is detachably and fixedly installed on the connecting piece. A spherical hook (2) is installed on the towing bracket (1). A locking tongue seat (3) is fixedly provided on the towing bracket (1). A locking tongue (4) is rotatably provided on the locking tongue seat (3). One end of the locking tongue (4) is rotatably connected to the locking tongue seat (3). When the locking tongue (4) rotates to the other end and is positioned vertically above the spherical hook (2), the locking tongue (4) is locked and fixed to the locking tongue seat (3) through a locking mechanism.

2. The spherical trailer device according to claim 1, characterized in that, The number of the locking tongue seats (3) is two. The two locking tongue seats (3) are arranged side by side at intervals. One end of the locking tongue (4) is arranged between the two locking tongue seats (3) and is rotatably connected to the two locking tongue seats (3) through a fixed shaft (5). When the locking tongue (4) rotates to the other end and is positioned vertically above the spherical hook (2), the middle part of the locking tongue (4) is locked and fixed to the locking tongue seat (3) through a locking mechanism.

3. The spherical trailer device according to claim 2, characterized in that, The locking mechanism includes a movable pin (6). A through hole penetrating both sides of the locking tongue (4) is provided in the middle part of the locking tongue (4). First limiting holes (8) matching the through hole are provided in the upper parts of the two locking tongue seats (3). When the locking tongue (4) rotates to the other end and is positioned vertically above the spherical hook (2), the through hole communicates with the two first limiting holes (8), and the movable pin (6) is inserted into the through hole and the two first limiting holes (8).

4. A spherical trailer device according to claim 3, characterized in that, A fixed pin head (9) is fixedly provided at one end of the movable pin (6). An anti - detachment limiting part (10) is connected to the other end of the movable pin (6) after the other end of the movable pin (6) extends out of the first limiting hole (8).

5. A spherical trailer device according to claim 1, characterized in that, An adjusting hole (11) penetrating the upper and lower surfaces of the locking tongue (4) is provided at the end of the locking tongue (4) far from the locking tongue seat (3). A pressing rod (12) that can be adjusted along the axial direction of the adjusting hole (11) is provided in the adjusting hole (11).

6. A spherical trailer device according to claim 5, characterized in that, The lower end surface of the pressing rod (12) is an inward - concave arc surface (13).

7. A spherical trailer device according to any one of claims 1 to 6, characterized in that, A connecting shaft (14) is fixedly provided at the bottom end of the spherical hook (2). External threads are provided on the connecting shaft (14). A connecting hole (15) is provided on the towing bracket (1). One end of the connecting shaft (14) far from the spherical hook (2) passes through and extends out of the connecting hole (15) and is threadedly connected to a locking nut (16).

8. A spherical trailer device according to any one of claims 1 to 6, characterized in that, The connecting piece includes a U - shaped square groove body (17). The two side walls of the U - shaped square groove body (17) are vertically arranged. A connecting part (18) for connecting with the vehicle is provided on the U - shaped square groove body (17). The towing bracket (1) is arranged between the two side walls of the U - shaped square groove body (17). A plurality of second limiting holes (19) are arranged at intervals from bottom to top on the two side walls of the U - shaped square groove body (17). An installation hole (20) penetrating both sides of the towing bracket (1) is provided on the towing bracket (1). When the two ends of the installation hole (20) communicate with the two relatively - positioned second limiting holes (19) on both sides respectively, a long pin shaft is inserted into the communicated installation hole (20) and the second limiting hole (19).

9. A spherical trailer device according to claim 8, wherein, The number of the mounting holes (20) is two, the two mounting holes (20) are arranged at intervals up and down, a plurality of second limiting holes (19) on two side walls of the U-shaped square groove body (17) are arranged at equal intervals, and the distance between two adjacent second limiting holes (19) is the same as the distance between the two mounting holes (20). The number of the long pin shafts is two. When two ends of the two mounting holes (20) are respectively communicated with two opposite second limiting holes (19) on two sides, the two long pin shafts are respectively inserted into the communicated mounting holes (20) and the second limiting holes (19).

10. A spherical towing device according to claim 8, characterized in that, The towing bracket (1) includes a towing base (21) and towing side walls (22) respectively and fixedly arranged on two sides of the towing base (21). The spherical hook (2) and the lock tongue seat (3) are both fixed on the towing base (21), and the mounting holes (20) are arranged on the towing side walls (22).

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