CN220429785U - Trailer hook - Google Patents
Trailer hook Download PDFInfo
- Publication number
- CN220429785U CN220429785U CN202321533912.6U CN202321533912U CN220429785U CN 220429785 U CN220429785 U CN 220429785U CN 202321533912 U CN202321533912 U CN 202321533912U CN 220429785 U CN220429785 U CN 220429785U
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- CN
- China
- Prior art keywords
- lock sleeve
- ball
- trailer hook
- sliding fit
- wall
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000009434 installation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Abstract
The utility model discloses a trailer hook, wherein the root of a main body of the trailer hook is a cylindrical tail part, the bottom of the tail part is provided with a raised annular step, the top end of the tail part is provided with a coaxial center hole, the hole wall at the bottom of the center hole is provided with a conical ball cavity, and the diameter of the outer side of the ball cavity is larger than that of the inner side of the ball cavity; the top of the inner wall of the lock sleeve is in sliding fit with the tail part, the bottom of the inner wall of the lock sleeve is in sliding fit with the annular step, and the middle of the inner wall of the lock sleeve is in sliding fit with the ball; the ball is movably arranged in the ball cavity; the spring is supported on the annular step and is positioned in the lock sleeve, and the spring is pressed by the step arranged in the lock sleeve; the fixed ring is fixed at the tail part of the trailer hook main body and presses the top end face of the lock sleeve; the bottom of the connecting rod is provided with a circle of groove, part of spherical crowns of the balls can extend out of the inner holes of the ball cavities and are clamped in the grooves, and the connecting rod is in sliding fit with the central hole. According to the trailer hook, the quick-connect lock sleeve mode is used for connecting, so that the installation efficiency of the trailer hook is improved.
Description
Technical Field
The utility model relates to the technical field of vehicle accessories, in particular to a vehicle trailer hook.
Background
At present, an automobile is taken as one of the most commonly used transportation means, the intellectualization of the automobile is higher and higher, and the design of each part on the automobile is also gradually reasonable and humanized. However, car failures and traffic accidents are frequent, in which case the failed vehicle is usually towed from the failed floor to the safety zone only by other vehicles as towing action, with the towing rope being connected between the towing vehicle and the failed vehicle mainly by means of a towing hook.
The trailer hitch on an automobile is typically placed in a trunk for use, and it is necessary to use a threaded hole or nut that aligns its threaded portion with the trailer beam, and then screw it in. Because the trailer beam is usually positioned in the automobile shell, the hole site is not easy to align when the trailer hook is installed, a certain time is needed in the screwing process, accidents and dangers are easy to happen when the trailer hook is installed for a long time when an automobile fault or a traffic accident occurs, and the speed of installing the trailer hook needs to be improved.
Therefore, there is a need to develop a trailer hook that addresses the above-described drawbacks.
Disclosure of Invention
The utility model aims to provide a trailer hook which is connected in a quick-connect lock sleeve mode, so that the installation efficiency of the trailer hook is improved.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model discloses a trailer hook which comprises a trailer hook main body, a lock sleeve, a spring, balls, a fixing ring and a connecting rod, wherein the root of the trailer hook main body is a cylindrical tail part, a raised annular step is arranged at the bottom of the tail part, a coaxial center hole is formed in the top end of the tail part, a conical ball cavity is formed in the hole wall at the bottom of the center hole, and the diameter of the outer side of the ball cavity is larger than that of the inner side of the ball cavity; the top of the inner wall of the lock sleeve is in sliding fit with the tail part, the bottom of the inner wall of the lock sleeve is in sliding fit with the annular step, and the middle of the inner wall of the lock sleeve is in sliding fit with the ball; the ball is movably arranged in the ball cavity; the spring is supported on the annular step and is positioned in the lock sleeve, and the spring is pressed by the step arranged in the lock sleeve; the fixing ring is fixed on the tail part and presses the top end face of the lock sleeve; the connecting rod bottom is equipped with the round recess, the partial spherical crown of ball can stretch out the ball intracavity hole and block in the recess, the connecting rod with centre bore sliding fit.
Further, the inner wall of the lock sleeve is provided with a stepped through hole, which is sequentially a first round hole, a second round hole, a taper hole and a third round hole, the third round hole is in sliding fit with the outer wall of the tail part, the first round hole is in sliding fit with the annular step, the second round hole is in sliding fit with the ball, and the taper hole is in sliding fit with the ball.
Further, the bottom end surface of the first round hole presses the spring.
Further, the ball cavities are uniformly distributed and arranged circumferentially by taking the tail center shaft as an axis.
Further, the groove is an arc-shaped groove.
Further, the tail part of the trailer hook main body and the inner wall of the fixed ring are provided with mutually matched threads.
Further, the novel threaded end face of the tail part further comprises a spring retainer ring and an annular groove, wherein the annular groove is arranged on the threaded end face of the tail part, and the spring retainer ring is clamped into the annular groove.
Further, the connecting rod is prefabricated on a frame beam body of the vehicle.
Compared with the prior art, the utility model has the beneficial technical effects that:
the root of the trailer hook main body is the tail of a cylinder, the bottom of the tail is provided with a raised annular step, the top end of the tail is provided with a coaxial central hole, the hole wall at the bottom of the central hole is provided with a conical ball cavity, and the diameter of the outer side of the ball cavity is larger than that of the inner side of the ball cavity; the top of the inner wall of the lock sleeve is in sliding fit with the tail part, the bottom of the inner wall of the lock sleeve is in sliding fit with the annular step, and the middle of the inner wall of the lock sleeve is in sliding fit with the ball; the ball is movably arranged in the taper hole; the spring is supported on the annular step and is positioned in the lock sleeve, and the spring is pressed by the step arranged in the lock sleeve; the fixing ring is fixed on the tail part and presses the top end face of the lock sleeve; the connecting rod bottom is equipped with the round recess, the partial spherical crown of ball can stretch out the ball intracavity hole and block in the recess, the connecting rod with centre bore sliding fit. The lock sleeve is slid to enable the balls to be in an active state, the connecting rod stretches into the bottom of the central hole of the tail portion, the lock sleeve is loosened to pull the trailer hook main body outwards, the taper hole arranged in the lock sleeve pushes the balls into the groove under the pushing of the spring and is compressed by the second round hole, and accordingly the trailer hook can be mounted through simple push-pull action.
In addition, the ball and the connecting rod can rotate relatively, so that the rope can be prevented from being knotted during traction.
Drawings
The utility model is further described with reference to the following description of the drawings.
FIG. 1 is a schematic diagram of a towing hook of the present utility model in a three-dimensional configuration;
FIG. 2 is a schematic diagram of a cross-sectional tail connection of a trailer hitch of the present utility model;
FIG. 3 is a schematic cross-sectional view of the tail section of the trailer hook of the present utility model;
FIG. 4 is a schematic cross-sectional view of a lock sleeve of a trailer hook of the present utility model;
FIG. 5 is a schematic diagram of a front view of a connecting rod of a trailer hook of the present utility model;
FIG. 6 is a schematic cross-sectional view of a retaining ring of a trailer hitch of the present utility model.
Reference numerals illustrate: 1. a trailer hook body; 101. an annular step; 102. a ball cavity; 103. a central bore; 104. tail part; 2. a lock sleeve; 201. a first round hole; 202. a second round hole; 203. a third round hole; 204. taper holes; 3. a spring; 4. a ball; 5. a fixing ring; 6. a connecting rod; 601. a groove; 602. chamfering; 603. a mounting plate; 7. a spring retainer ring; 8. an annular groove.
Detailed Description
The utility model provides a trailer hook which is connected in a quick-locking sleeve mode, so that the installation efficiency of the trailer hook is improved.
The following description of the embodiments of the present utility model will be made in detail with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "middle," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model.
Referring to the drawings, FIG. 1 is a schematic perspective view of a towing hook of the present utility model; FIG. 2 is a schematic diagram of a cross-sectional tail connection of a trailer hitch of the present utility model; FIG. 3 is a schematic cross-sectional view of the tail section of the trailer hook of the present utility model; FIG. 4 is a schematic cross-sectional view of a lock sleeve of a trailer hook of the present utility model; FIG. 5 is a schematic diagram of a front view of a connecting rod of a trailer hook of the present utility model; FIG. 6 is a schematic cross-sectional view of a retaining ring of a trailer hitch of the present utility model.
In a specific embodiment of the present utility model, as shown in fig. 1 to 6, the trailer hook comprises a trailer hook body 1, an annular step 101, a ball cavity 102, a central hole 103, a tail 104, a lock sleeve 2, a first round hole 201, a spring 3, balls 4, a fixed ring 5, a connecting rod 6 and a groove 601, wherein the root of the trailer hook body 1 is a tail 104 in a cylindrical form, the bottom of the tail 104 is provided with a raised annular step 101, the top end of the tail 104 is provided with a coaxial central hole 103, the hole wall at the bottom of the central hole 103 is provided with a conical ball cavity 102, and the diameter at the outer side of the ball cavity 102 is larger than the diameter at the inner side; the top of the inner wall of the lock sleeve 2 is in sliding fit with the tail 104, the bottom of the inner wall of the lock sleeve 2 is in sliding fit with the annular step 101, the middle of the inner wall of the lock sleeve 2 is in sliding fit with the balls 4, and lubricating oil is arranged in the lock sleeve 2; the ball 4 is movably arranged in the ball cavity 102; the spring 3 is supported on the annular step 101 and is positioned in the lock sleeve 2, and the spring 3 is pressed by the end surface step of the first round hole 201 arranged in the lock sleeve 2; the fixed ring 5 is fixed on the tail 104 of the trailer hook main body 1 and presses the top end face of the lock sleeve 2; the bottom of connecting rod 6 is equipped with round recess 601, and ball cavity 102 hole and card are gone out to ball 4's some spherical crown in recess 601, and connecting rod 6 and centre bore 103 sliding fit are equipped with lubricating oil in the centre bore 103.
In a specific embodiment of the present utility model, as shown in fig. 2 and 4, the inner wall of the lock sleeve 2 is provided with a stepped through hole, which is sequentially provided with a first round hole 201, a second round hole 202, a taper hole 204 and a third round hole 203 from bottom to top, the third round hole 203 is in sliding fit with the outer wall of the tail 104, the first round hole 201 is in sliding fit with the annular step 101, the second round hole 202 is in sliding fit with the ball 4, and the taper hole 204 is in sliding fit with the ball 4.
Specifically, the lock sleeve 2 is slidable when a downward force is applied to the lock sleeve 2, and after the lock sleeve 2 is released, the lock sleeve 2 is returned by the spring 3 and presses the balls 4.
In one embodiment of the present utility model, as shown in fig. 2, the bottom end surface of the first circular hole 201 compresses the spring 3.
In one embodiment of the present utility model, as shown in fig. 3, six ball cavities 102 are circumferentially and uniformly arranged around the central axis of the tail 104.
Specifically, the plurality of balls 4 are disposed in the ball cavity 102 to increase the firmness of the fixed connecting rod 6, and the connecting rod 6 is not easy to fall out when the vehicle is towed.
In one embodiment of the present utility model, as shown in fig. 2, the second circular hole 202 is capable of pressing the ball 4 into the groove 601.
In one embodiment of the present utility model, as shown in FIG. 2, the clearance between the tapered bore 204 and the tail 104 ensures that the ball 4 is completely disengaged from the groove 601 and allowed to move within the ball cavity 102.
Specifically, when it is desired to install and remove the trailer hook, the sliding sleeve 2 brings the balls 4 into an active state, in which the connecting rod 6 can be inserted into or removed from the central hole 103.
In one embodiment of the present utility model, as shown in fig. 5, the groove 601 is an arc-shaped groove, and the arc-shaped groove cooperates with the ball 4 to clamp the connecting rod 6.
In a specific embodiment of the present utility model, as shown in fig. 3 and 6, the tail 104 of the trailer hook main body 1 and the inner wall of the fixed ring 5 are provided with mutually matched threads, and the fixed ring 5 is screwed into the thread of the tail 104 to compress the lock sleeve 2.
In a specific embodiment of the present utility model, as shown in fig. 2 and 3, the present utility model further comprises a spring retainer 7 and an annular groove 8, wherein the annular groove 8 is disposed on the threaded end face of the tail 104, the spring retainer 7 is clamped into the annular groove 8, the spring retainer 7 limits the fixing ring 5, and the fixing ring 5 is prevented from falling off during traction operation.
In one embodiment of the present utility model, as shown in fig. 1 and 5, the top end of the connecting rod 6 is provided with a mounting plate 603, and the bottom end of the connecting rod 6 is provided with a chamfer 602.
Specifically, the connecting rod 6 is welded and fixed to the trailer beam body of the vehicle in advance by the mounting plate 603, and the other way is to provide a through hole in the mounting plate 603 and fix the mounting plate 603 to the trailer Liang Tishang by bolts; the chamfer 602 serves to facilitate the alignment of the connecting rod 6 with the central bore 103.
The utility model relates to a trailer hook working principle: taking out the trailer hook from the trunk, sliding the lock sleeve 2 to enable the balls 4 to be in a movable state, guiding the connecting rod 6 to extend into the bottom of the central hole 103 of the tail 104 through the chamfer 602 at the end part of the connecting rod 6, loosening the lock sleeve 2 and pulling the trailer hook main body 1 outwards, wherein the conical hole 204 arranged in the lock sleeve 2 presses the balls 4 into the groove 601 under the pushing of the spring 3 and is compressed by the second round hole 202, so that the connecting rod 6 and the trailer hook are fixed together, and at the moment, a rope can be tied on the trailer hook main body 1, and the tractor starts to pull a fault vehicle; when the trailer hook is removed, the lock sleeve 2 is slid to enable the balls 4 to be in a movable state, and then the trailer hook main body 1 is pulled to enable the connecting rod 6 and the trailer hook to be separated.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.
Claims (8)
1. A trailer hook, characterized in that: the novel traction device comprises a traction device body (1), a lock sleeve (2), a spring (3), balls (4), a fixing ring (5) and a connecting rod (6), wherein the root of the traction device body (1) is a cylindrical tail (104), a raised annular step (101) is arranged at the bottom of the tail (104), a coaxial center hole (103) is arranged at the top end of the tail (104), a conical ball cavity (102) is formed in the wall of the bottom of the center hole (103), and the diameter of the outer side of the ball cavity (102) is larger than that of the inner side of the ball cavity; the top of the inner wall of the lock sleeve (2) is in sliding fit with the tail part (104), the bottom of the inner wall of the lock sleeve (2) is in sliding fit with the annular step (101), and the middle of the inner wall of the lock sleeve (2) is in sliding fit with the ball (4); the ball (4) is movably arranged in the ball cavity (102); the spring (3) is received on the annular step (101) and is positioned in the lock sleeve (2), and the spring (3) is pressed by the step arranged in the lock sleeve (2); the fixing ring (5) is fixed on the tail part (104) and presses the top end face of the lock sleeve (2); the bottom end of the connecting rod (6) is provided with a circle of groove (601), part of spherical crowns of the balls (4) can extend out of the inner holes of the ball cavities (102) and are clamped in the groove (601), and the connecting rod (6) is in sliding fit with the central hole (103).
2. A trailer hook as claimed in claim 1, wherein: the inner wall of the lock sleeve (2) is provided with a stepped through hole, which is sequentially provided with a first round hole (201), a second round hole (202), a taper hole (204) and a third round hole (203), wherein the third round hole (203) is in sliding fit with the outer wall of the tail part (104), the first round hole (201) is in sliding fit with the annular step (101), the second round hole (202) is in sliding fit with the ball (4), and the taper hole (204) is in sliding fit with the ball (4).
3. A trailer hook as claimed in claim 2, wherein: the bottom end surface of the first round hole (201) presses the spring (3).
4. A trailer hook as claimed in claim 3, wherein: the ball cavities (102) are circumferentially and uniformly distributed by taking the central shaft of the tail part (104) as an axis.
5. A trailer hook as claimed in claim 1, wherein: the groove (601) is an arc-shaped groove.
6. A trailer hook as claimed in claim 1, wherein: the tail part (104) of the trailer hook main body (1) and the inner wall of the fixed ring (5) are provided with mutually matched threads.
7. A trailer hook as claimed in claim 6, wherein: the novel spring retainer further comprises a spring retainer ring (7) and an annular groove (8), wherein the annular groove (8) is arranged on the threaded end face of the tail portion (104), and the spring retainer ring (7) is clamped into the annular groove (8).
8. A trailer hook as claimed in claim 1, wherein: the connecting rod (6) is prefabricated on a frame beam body of the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321533912.6U CN220429785U (en) | 2023-06-16 | 2023-06-16 | Trailer hook |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321533912.6U CN220429785U (en) | 2023-06-16 | 2023-06-16 | Trailer hook |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220429785U true CN220429785U (en) | 2024-02-02 |
Family
ID=89693450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321533912.6U Active CN220429785U (en) | 2023-06-16 | 2023-06-16 | Trailer hook |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220429785U (en) |
-
2023
- 2023-06-16 CN CN202321533912.6U patent/CN220429785U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |