CN219487096U - Easily-detachable trailer hook - Google Patents

Abstract

The utility model discloses a detachable trailer hook, which belongs to the field of traction connectors and solves the problems that the trailer hook is easy to damage and inconvenient to maintain. The utility model is mainly used for effectively guaranteeing the service life of the trailer hook and is also convenient for maintenance.

Description

Easily-detachable trailer hook

Technical Field

The utility model relates to a traction connector, in particular to a detachable trailer hook.

Background

A tow hook is a towing connector used to effect a hitch between a locomotive and a vehicle or between a vehicle and a vehicle. The existing trailer hook mainly comprises a trailer hook body and a connecting base, wherein a thread section is arranged on the trailer hook body, a shaft hole is formed in the connecting base, the thread section of the trailer hook body is inserted into the shaft hole and screwed and connected in a threaded connection mode, and due to the fact that the thread section is easy to squeeze the inner wall of the shaft hole to break under the action of lateral force born by the trailer hook in use, the inner wall of the shaft hole is damaged, on one hand, the broken part of the trailer hook is not easy to take out, maintenance is inconvenient, and on the other hand, the service life of the connecting base can be influenced.

Disclosure of Invention

The utility model aims to provide the easily-detachable trailer hook, which solves the problems that the trailer hook is easy to damage and inconvenient to maintain, effectively ensures the service life of the trailer hook and is convenient to maintain.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a quick detachable trailer hook, includes the trailer hook body and is used for the connection base that can dismantle with the vehicle, the trailer hook body includes towing hook and connecting axle, and the towing hook is fixed in the one end of connecting axle, and the connecting base is equipped with the shaft hole that supplies the other end of connecting axle to pass, and the connecting axle is equipped with the optical axis section with shaft hole complex, is equipped with first fastener and second fastener on the connecting axle, and first fastener and second fastener are located the both sides of connecting the base respectively and are used for fixing the connecting axle on the connecting base.

After the technical scheme is adopted, the utility model has the following advantages: firstly, because the optical axis section surface is more smooth, it is smooth, the optical axis section is direct with the shaft hole cooperation, on the one hand, increase the cooperation area between the inner wall in optical axis section and shaft hole, reduce the local stress that the inner wall in shaft hole received, effectively reduce the loss in shaft hole, and optical axis section structural strength is higher, be difficult for the fracture, effectively ensure the life of trailer hook, corresponding, also can reduce the maintenance frequency of trailer hook, promote user's experience sense, on the other hand, when the optical axis section fracture, can directly take out the optical axis section and change, easy maintenance is more convenient, secondly, the connecting axle is fixed through first fastener and second fastener, form dual fixedly, make the installation of connecting axle more reliable, and, first fastener and second fastener are located the both sides of connection base respectively, be convenient for install and dismantle, further make the maintenance more convenient.

Further, the first fastening piece and the second fastening piece are respectively positioned at two ends of the optical axis section, and the first fastening piece is close to the towing hook relative to the second fastening piece. By adopting the technical scheme, the positions of the first fastener and the second fastener are reasonably arranged, so that interference of the first fastener and the second fastener on the cooperation between the optical axis section and the shaft hole is effectively avoided, and the limiting effect can be formed on the two ends of the optical axis section, so that the trailer hook body is effectively prevented from loosening when being connected with the base relatively.

Further, the first fastener is including locating the shaft shoulder of connecting axle, and the connection base supports in the shaft shoulder location, and the connecting axle is equipped with first screw thread section, and the second fastener includes first nut, and first nut and first screw thread section cooperation are hugged closely the connection base. By adopting the technical scheme, because the shaft shoulder is fixed, the position of the first positioning piece is only required to be adjusted, the trailer hook body can be fixed or detached, the assembly is convenient, the shaft piece and the connecting shaft are generally integrally formed, the structural strength is high, and the installation reliability of the trailer hook body is improved.

Further, the first thread section is located at one end, far away from the towing hook, of the connecting shaft, the diameter of the first thread section is D1, the diameter of the shaft hole is D2, and D1 is smaller than D2. By adopting the technical scheme, the diameter of the first thread section is reasonably set, the first thread section is convenient to pass through the shaft hole, the first thread section and the shaft hole are effectively prevented from being scratched, the service life of the trailer hook is further guaranteed, if D1 is more than or equal to D2, the first thread section and the shaft hole are easy to scratch, and the first thread section is difficult to pass through the shaft hole, so that the trailer hook is difficult to install.

Further, the connecting shaft is provided with a second threaded section and a third threaded section, the first fastening piece comprises a second nut, the second fastening piece comprises a third nut, the second nut is matched with the second threaded section and is tightly attached to one side of the connecting base, and the third nut is matched with the third threaded section and is tightly attached to the other side of the connecting base. Through the technical scheme, the fixed connecting shaft is realized, and the position of the connecting shaft can be adjusted by adjusting the second nut or the third nut, so that the connecting shaft is more accurate according to the position.

Further, the second thread segment is located at one side of the optical axis segment, and the third thread segment is located at the other side of the optical axis segment. Through above-mentioned technical scheme, because shaft hole and optical axis section cooperation, make second screw thread section and the third screw thread section that is located optical axis section both sides separate with the shaft hole, effectively avoid second screw thread section and third screw thread section to scratch the shaft hole.

Further, the diameter of the second thread section is D3, the diameter of the shaft hole is D2, and D3 is more than D2. Through above-mentioned technical scheme, rationally set up the diameter of second screw thread section, effectively avoid the second screw thread section to pass the shaft hole, also can play the locate function to the mounted position in connecting axle and shaft hole, if D3 is less than or equal to D2, in the second screw thread section can penetrate the shaft hole, form the scratch to the inner wall in shaft hole, influence the life of trailer hook.

Further, the surface of one side of the connecting base far away from the towing hook is provided with a mounting groove, and the second fastening piece is arranged in the mounting groove. Through above-mentioned technical scheme, locate the mounting groove with the second fastener in, effectively separate second fastener and outside contact, avoid the second fastener to receive the effect of external force to take place to remove, influence the installation reliability of towing hook body and connection base.

Further, the thickness of the second fastening piece in the axial direction of the connecting shaft is H1, and the depth of the mounting groove in the axial direction of the connecting shaft is H2, wherein H1 is less than or equal to H2. Through above-mentioned technical scheme, rationally set up the thickness of second fastener and the degree of depth of mounting groove, keep connecting the surface smoothness of base, be convenient for install, if H1 > H2, then probably can influence connecting the base and install on the vehicle.

Further, the connecting base is provided with at least two connecting through holes for the bolts to pass through, and the connecting through holes are arranged around the shaft holes. Through above-mentioned technical scheme, realize connecting the detachable connection of base and vehicle to and, the through-hole encircles the shaft hole setting, makes the connection base atress more even, effectively avoids connecting the local atress of base too big and damage.

Drawings

The utility model is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic diagram (I) of a detachable trailer hook according to a first embodiment of the present utility model;

FIG. 2 is a schematic diagram of a detachable trailer hook according to a first embodiment of the present utility model (II);

FIG. 3 is a cross-sectional view of a tow hook in accordance with an embodiment of the present utility model;

FIG. 4 is a schematic structural diagram of a trailer hook body according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a second embodiment of a trailer hook;

FIG. 6 is a cross-sectional view of a tow hook in a second embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a trailer hook body according to a second embodiment of the present utility model;

in the figure, 1, a trailer hook body; 11. a towing hook; 12. a connecting shaft; 121. an optical axis section; 122. a shaft shoulder; 123. a first thread segment; 124. a second thread segment; 125. a third thread segment; 2. the base is connected; 21. a shaft hole; 22. a mounting groove; 23. a connecting through hole; 31. a first nut; 32. a second nut; 33. and a third nut.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

It should be understood that, in various embodiments of the present utility model, the size of the sequence numbers of each process is not meant to indicate the order of execution, and the order of execution of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present utility model.

It should be understood that in the present utility model, "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that in the present utility model, "plurality" means two or more. "and/or" is merely an association relationship describing an association object, meaning that three relationships may exist, for example, X and/or Y may represent: x alone, X and Y together, and Y alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. "comprising X, Y and Z", "comprising X, Y, Z" means that all three of X, Y, Z comprise, "comprising X, Y or Z" means that one of the three comprises X, Y, Z, and "comprising X, Y and/or Z" means that any one or any two or three of the three comprise X, Y, Z.

The technical scheme of the utility model is described in detail below by specific examples. The following specific embodiments may be combined with or replaced with each other according to actual situations, and the same or similar concepts or processes may not be described in detail in some embodiments.

Embodiment one:

as shown in fig. 1 to 4, the utility model provides a detachable trailer hook, which comprises a trailer hook body 1 and a connecting base 2 for detachable connection with a vehicle, wherein the trailer hook body 1 comprises a trailer hook 11 and a connecting shaft 12, the trailer hook 11 is fixed at one end of the connecting shaft 12, the connecting base 2 is provided with a shaft hole 21 for the other end of the connecting shaft 12 to pass through, the connecting shaft 12 is provided with an optical axis section 121 matched with the shaft hole 21, the connecting shaft 12 is provided with a first fastener and a second fastener, and the first fastener and the second fastener are respectively positioned at two sides of the connecting base 2 and used for fixing the connecting shaft 12 on the connecting base 2.

Firstly, because the surface of the optical axis section 121 is smoother and smoother, the optical axis section 121 is directly matched with the shaft hole 21, on one hand, the matching area between the optical axis section 121 and the inner wall of the shaft hole 21 is increased, the local stress on the inner wall of the shaft hole 21 is reduced, the loss of the shaft hole 21 is effectively reduced, the optical axis section 121 is high in structural strength and not easy to break, the service life of the trailer hook is effectively guaranteed, correspondingly, the maintenance frequency of the trailer hook can be reduced, the experience of a user is improved, on the other hand, when the optical axis section 121 breaks, the optical axis section 121 can be directly taken out for replacement, the maintenance is more convenient, and secondly, the connecting shaft 12 is fixed through a first fastener and a second fastener to form double fixing, so that the installation of the connecting shaft 12 is more reliable, and the first fastener and the second fastener are respectively positioned on two sides of the connecting base 2, so that the installation and the disassembly are convenient, and the maintenance are further convenient.

Specifically, the first fastening member and the second fastening member are respectively located at two ends of the optical axis section 121, and the first fastening member is close to the towing hook 11 with respect to the second fastening member. Through the position that rationally sets up first fastener and second fastener, effectively avoid first fastener and second fastener to the cooperation between optical axis section 121 and the shaft hole 21 produce the interference, also can form spacing effect to optical axis section 121 both ends, effectively prevent that trailer hook body 1 from connecting base 2 relatively not hard up.

In this embodiment, the first fastener includes a shoulder 122 disposed on the connecting shaft 12, the connecting base 2 is positioned against the shoulder 122, the connecting shaft 12 is provided with a first threaded section 123, and the second fastener includes a first nut 31, and the first nut 31 is matched with the first threaded section 123 and is tightly attached to the connecting base 2. Because the shoulder 122 is fixed in position, only need adjust the position of first setting element, can realize fixed or dismantlement with the trailer hook body 1, the equipment of being convenient for, and axle spare and connecting axle 12 general integrated into one piece, structural strength is higher, increases the reliability of trailer hook body 1 installation.

In order to further ensure the service life of the shaft hole 21, the first thread section 123 is located at one end of the connecting shaft 12 far away from the towing hook 11, the diameter of the first thread section 123 is D1, and the diameter of the shaft hole 21 is D2, wherein D1 is smaller than D2. The diameter of the first thread section 123 is reasonably set, the first thread section 123 is convenient to pass through the shaft hole 21, scratch is effectively avoided between the first thread section 123 and the shaft hole 21, the service life of the trailer hook is further guaranteed, if D1 is more than or equal to D2, scratch is easily generated between the first thread section 123 and the shaft hole 21, and the first thread section is difficult to pass through the shaft hole 21, so that the trailer hook is difficult to install.

In order to facilitate the installation of the connection base 2, a side surface of the connection base 2 away from the towing hook 11 is provided with an installation groove 22, and the second fastening piece is arranged in the installation groove 22. By arranging the second fastening piece in the mounting groove 22, the second fastening piece is effectively separated from contact with the outside, and the second fastening piece is prevented from moving under the action of external force, so that the mounting reliability of the trailer hook body 1 and the connecting base 2 is prevented from being influenced.

And the thickness of the second fastener in the axial direction of the connecting shaft 12 is H1, and the depth of the mounting groove 22 in the axial direction of the connecting shaft 12 is H2, H1. Ltoreq.H2. By reasonably setting the thickness of the second fastener and the depth of the mounting groove 22, the surface flatness of the connection base 2 is maintained, the mounting is facilitated, and if H1 > H2, the mounting of the connection base 2 on the vehicle may be affected.

In order to achieve a detachable connection of the connection base 2, the connection base 2 is provided with at least two connection through holes 23 for the passage of bolts, the connection through holes 23 being arranged around the shaft hole 21. Realize connecting the detachable connection of base 2 and vehicle to and, connect through-hole 23 and encircle shaft hole 21 setting, make the connection base 2 atress more even, effectively avoid connecting the local atress of base 2 too big and damage.

It will be appreciated that the connecting through holes 23 may be provided in a reasonable number of three, four, five, etc.

Embodiment two:

as shown in fig. 5 to 7, in the present embodiment, the connecting shaft 12 is provided with a second threaded section 124 and a third threaded section 125, the first fastener includes a second nut 32, the second fastener includes a third nut 33, the second nut 32 is engaged with the second threaded section 124 and is abutted against one side of the connecting base 2, and the third nut 33 is engaged with the third threaded section 125 and is abutted against the other side of the connecting base 2. The fixing of the connecting shaft 12 is realized, and the position of the connecting shaft 12 can be adjusted by adjusting the second nut 32 or the third nut 33, so that the position of the connecting shaft 12 is more accurate.

And, the second thread segments 124 are located on one side of the optical axis segment 121, and the third thread segments 125 are located on the other side of the optical axis segment 121. Because the shaft hole 21 is matched with the optical axis section 121, the second thread section 124 and the third thread section 125 positioned on two sides of the optical axis section 121 are separated from the shaft hole 21, and the second thread section 124 and the third thread section 125 are effectively prevented from rubbing the shaft hole 21.

In order to further secure the service life of the shaft hole 21, the diameter of the second threaded section 124 is D3, and the diameter of the shaft hole 21 is D2, with D3 > D2. The diameter of the second thread section 124 is reasonably set, so that the second thread section 124 cannot penetrate through the shaft hole 21, the installation positions of the connecting shaft 12 and the shaft hole 21 can be positioned, if D3 is less than or equal to D2, the second thread section 124 can penetrate into the shaft hole 21, and a scratch is formed on the inner wall of the shaft hole 21, so that the service life of the trailer hook is influenced.

Other matters not described in this embodiment can refer to embodiment one.

In addition to the preferred embodiments described above, other embodiments of the present utility model are also contemplated as falling within the scope of the claimed utility model, as well as all other embodiments that may be made by one of ordinary skill in the art without making any inventive effort based on the embodiments of the present utility model.

Claims (10)

1. The utility model provides a quick detachable trailer hook, includes the trailer hook body and is used for the connection base that can dismantle with the vehicle, its characterized in that, the trailer hook body includes towing hook and connecting axle, and the towing hook is fixed in the one end of connecting axle, and the connecting base is equipped with the shaft hole that supplies the other end of connecting axle to pass, and the connecting axle is equipped with the optical axis section with shaft hole complex, is equipped with first fastener and second fastener on the connecting axle, and first fastener and second fastener are located the both sides of connecting the base respectively and are used for fixing the connecting axle on the connecting base.

2. The quick detachable tow hook according to claim 1, wherein the first and second fasteners are located at opposite ends of the optical axis segment, respectively, and the first fastener is located adjacent to the tow hook relative to the second fastener.

3. The quick detachable trailer hook according to claim 2, wherein the first fastener comprises a shoulder provided on the connecting shaft, the connecting base is positioned against the shoulder, the connecting shaft is provided with a first threaded section, and the second fastener comprises a first nut which mates with the first threaded section and is in close contact with the connecting base.

4. A quick detachable tow hook according to claim 3 wherein the first thread section is located at the end of the connecting shaft remote from the tow hook, the first thread section having a diameter D1 and the shaft bore having a diameter D2, D1 < D2.

5. The quick detachable trailer coupler of claim 2, wherein the connecting shaft is provided with a second threaded section and a third threaded section, the first fastener comprises a second nut, the second fastener comprises a third nut, the second nut mates with the second threaded section and engages one side of the connecting base, and the third nut mates with the third threaded section and engages the other side of the connecting base.

6. The quick detachable trailer coupler of claim 5, wherein the second threaded section is located on one side of the optical axis section and the third threaded section is located on the other side of the optical axis section.

7. The quick detachable trailer hitch of claim 6, wherein the second threaded section has a diameter D3 and the shaft bore has a diameter D4, D3 > D4.

8. A quick detachable tow hook according to any one of claims 2 to 7 wherein the side surface of the connection base remote from the tow hook is provided with a mounting groove in which the second fastener is located.

9. The quick detachable trailer coupler of claim 8, wherein the second fastener has a thickness H1 in the axial direction of the connecting shaft, and the mounting groove has a depth H2 in the axial direction of the connecting shaft, H1 being equal to or less than H2.

10. The quick detachable trailer hook according to claim 1, wherein the connection base is provided with at least two connection through holes for bolts to pass through, the connection through holes being provided around the shaft hole.