Semi-trailer hook

Abstract

In the semi-trailer hook provided in the embodiment of the present application, the iron ring of the towing rope or other device is buckled on the clamp end of the trailer hook, and then the locking rod is passed through the lower clamp part of the clamp end and abutted against the upper clamp part. When actually used, the iron ring of the trailer hook abuts against the vertical section of the L-shaped abutment plate in the clamp end, and because the horizontal section of the L-shaped abutment plate is in contact with the groove of the locking rod, the L-shaped abutment plate can always abut against the inclined sliding surface of the groove under the action of external force, so as to realize the function of tightly abutting the locking rod against the upper clamp part. The above structural design can effectively reduce the probability of unhooking during driving.

Description

Technical Field

[0001] The present application relates to the technical field of semi-trailer parts, and more specifically, to a trailer hook for a semi-trailer. Background Art

[0002] The trailer hook is also known as the trailer ball, ball-type rear tow hook, etc. The trailer hook usually consists of two parts, namely a fixed bracket fixed to the parking space or the anti-collision beam of the front of the vehicle, and the ball or buckle of the high-strength trailer ball.

[0003] In the related art, the semi-trailer is driven on an uneven road surface, which causes the semi-trailer to shake during driving. During the shaking of the semi-trailer, the trailer hook will also shake with the semi-trailer, which is very likely to cause the hook to be unhooked, which brings great potential safety hazards to driving safety. Utility Model Content

[0004] In view of this, an embodiment of the present application provides a trailer hook for a semi-trailer to solve the technical problem in the related art that the trailer hook may shake due to the bumps of the semi-trailer, thus being easily unhooked.

[0005] In order to achieve the above objectives, the present application provides the following technical solutions:

[0006] A semi-trailer hook, comprising:

[0007] A bracket, the bracket comprising a fixed end and a clamp end, the clamp end comprising an upper clamp part and a lower clamp part;

[0008] A locking rod, wherein the locking rod is threadedly connected to the lower jaw portion, the locking rod passes through the lower jaw portion and abuts against the upper jaw portion, a groove is provided on the outer wall surface of the locking rod facing the bracket, a continuous inclined sliding surface is provided on the upper end groove wall of the groove, and an angle between the inclined sliding surface and the horizontal plane is an acute angle;

[0009] An L-shaped abutment plate is slidably disposed on the upper surface of the lower jaw portion, and a horizontal section of the L-shaped abutment plate is located in the groove; wherein,

[0010] When the horizontal section of the L-shaped abutment plate contacts the lateral wall of the groove, the vertical section of the L-shaped abutment plate contacts the outer wall of the locking rod, and the top end of the locking rod contacts the lower surface of the upper clamp.

[0011] In some possible implementations, the upper surface of the lower jaw portion is provided with a through hole for use with the locking rod, and a sliding groove for sliding with the L-shaped abutment plate, and the L-shaped abutment plate is slidably arranged on the upper surface of the lower jaw portion through the sliding groove.

[0012] In some possible implementations, a spring is disposed in the slide groove, one end of the spring abuts against a groove wall of the slide groove, and the other end of the spring is connected to the L-shaped abutment plate.

[0013] In some possible implementations, elastic rubber sheets are flexibly connected to two groove wall edges in the length direction of the slide groove, and the elastic rubber sheets are used to close the groove opening of the slide groove.

[0014] In some possible implementations, a sphere is disposed at the top end of the locking rod, and a spherical groove matching the sphere is disposed on the lower surface of the upper clamp portion.

[0015] In some possible implementations, the length of the vertical section of the L-shaped abutment plate is equal to the length of the locking rod.

[0016] The semi-trailer hook provided in the embodiment of the present application has at least the following beneficial effects:

[0017] In the semi-trailer hook provided in the embodiment of the present application, the iron ring of the towing rope or other device is buckled on the clamp end of the trailer hook, and then the locking rod is passed through the lower clamp part of the clamp end and abutted against the upper clamp part. When actually used, the iron ring of the trailer hook abuts against the vertical section of the L-shaped abutment plate in the clamp end, and because the horizontal section of the L-shaped abutment plate is in contact with the groove of the locking rod, the L-shaped abutment plate can always abut against the inclined sliding surface of the groove under the action of external force, so as to realize the function of tightly abutting the locking rod against the upper clamp part. The above structural design can effectively reduce the probability of unhooking during driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a semi-trailer trailer hook provided in an embodiment of the present application;

[0020] Figure 2 An exploded view of a semi-trailer trailer hook provided in an embodiment of the present application.

[0021] In the figure:

[0022] 100, bracket; 110, fixed end; 120, clamp end; 121, upper clamp part; 122, lower clamp part; 300, locking rod; 310, groove; 320, inclined sliding surface; 400, L-shaped abutment plate; 500, through hole; 600, slide groove; 700, elastic rubber sheet; 800, sphere; 900, spherical groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1-Figure 2 As shown, the semi-trailer hook provided in the embodiment of the present application includes a bracket 100, a locking rod 300 and an L-shaped abutment plate 400. The bracket 100 includes a fixed end 110 and a clamp end 120. The fixed end 110 of the bracket 100 is fixedly connected to the active vehicle, and the clamp end 120 of the bracket 100 is used to connect to the towed vehicle. The clamp end 120 also includes an upper clamp portion 121 and a lower clamp portion 122. There is a notch between the upper clamp portion 121 and the lower clamp portion 122. The cross-sectional diagram of the upper clamp portion 121 and the lower clamp portion 122 is C-shaped.

[0025] The locking rod 300 is a structure for locking the jaw end 120. Specifically, the locking rod 300 is threadedly connected to the lower jaw portion 122. The locking rod 300 penetrates the lower jaw portion 122 along the thickness direction and abuts against the upper surface of the upper jaw portion 121, thereby closing the gap between the upper jaw portion 121 and the lower jaw portion 122.

[0026] In this embodiment, a groove 310 is provided on the outer wall of the locking rod 300, and the groove 310 is facing the direction of the bracket 100. The upper end groove wall of the groove 310 is also provided with a continuous inclined sliding surface 320. The inclined sliding surface 320 and the groove 310 are interconnected, and the angle between the inclined sliding surface 320 and the horizontal plane is an acute angle.

[0027] The L-shaped abutment plate 400 is slidably disposed on the upper surface of the lower jaw portion 122. Specifically, the upper surface of the lower jaw portion 122 is provided with a through hole 500 used in conjunction with the locking rod 300, and the upper surface of the lower jaw portion 122 is also provided with a slide groove 600. The L-shaped abutment plate 400 is slidably disposed on the upper surface of the lower jaw portion 122 through the slide groove 600. When the horizontal surface of the L-shaped abutment plate 400 contacts the lateral wall surface of the groove 310, the vertical section of the L-shaped abutment plate 400 abuts against the outer wall surface of the locking rod 300, and enables the top end of the locking rod 300 to abut against the lower surface of the upper jaw portion 121. Preferably, the length of the vertical section of the L-shaped abutment plate 400 is equal to the length of the locking rod 300.

[0028] In the semi-trailer hook provided in the embodiment of the present application, the iron ring of the towing rope or other devices are buckled on the clamp end 120 of the trailer hook, and then the locking rod 300 is passed through the lower clamp part 122 of the clamp end 120 and abutted against the upper clamp part 121. When actually used, the iron ring of the trailer hook abuts against the vertical section of the L-shaped abutment plate 400 in the clamp end 120, and because the horizontal section of the L-shaped abutment plate 400 is in contact with the groove 310 of the locking rod 300, the L-shaped abutment plate 400 can always abut against the inclined sliding surface 320 of the groove 310 under the action of external force, so as to realize the function of tightly abutting the locking rod 300 against the upper clamp part 121. The above structural design can effectively reduce the probability of unhooking during driving.

[0029] In some embodiments, a spiral spring is further disposed in the slide groove 600, one end of the spiral spring abuts against the groove wall of the slide groove 600, and the other end of the spiral spring abuts against the L-shaped abutment. This ensures that when there is no external force acting on the L-shaped abutment plate 400, the L-shaped abutment plate 400 will return to its initial position under the action of the spring.

[0030] In some embodiments, both groove walls of the slide groove 600 along the length direction are flexibly connected with elastic rubber sheets 700, and the elastic rubber sheets 700 can close the notch of the slide groove 600, and the elastic rubber sheets 700 themselves are relatively soft. In actual use, the elastic rubber sheets 700 close the notch, and when the L-shaped abutment plate 400 passes through the elastic rubber sheets 700, it can pass through the gap between the two, so that the sliding structure of the L-shaped abutment plate 400 can be protected and dust can be prevented from falling into the slide groove 600, and the actual use can be not affected.

[0031] In some embodiments, a sphere 800 is disposed at the top of the locking rod 300, and correspondingly, the lower surface of the upper clamp portion 121 has a spherical groove 900 used in conjunction with the sphere 800. When the sphere 800 is located inside the spherical groove 900, the locking effect of the trailer hook can be further improved.

[0032] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0033] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0034] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0035] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0036] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0037] The term "substrate" as used herein refers to the material on which subsequent material layers are added. The substrate itself may be patterned. The material added on top of the substrate may be patterned, or may remain unpatterned. In addition, the substrate may include a wide range of materials, such as silicon, germanium, gallium arsenide, indium phosphide, etc. Alternatively, the substrate may be made of a non-conductive material (e.g., glass, plastic, or sapphire wafer, etc.).

[0038] The term "layer" used in the text may refer to a material portion including an area with a certain thickness. A layer may extend over the entire underlying structure or overlying structure, or may have a range smaller than the range of the underlying or overlying structure. In addition, a layer may be an area of ​​a homogeneous or inhomogeneous continuous structure, the thickness of which is less than the thickness of the continuous structure. For example, a layer may be located between the top surface and the bottom surface of the continuous structure or between any paired lateral planes at the top surface and the bottom surface. A layer may extend laterally, vertically and / or along a tapered surface. A substrate may be a layer, may include one or more layers therein, and / or may have one or more layers located thereon, above it and / or below it. A layer may include multiple layers. For example, an interconnect layer may include one or more conductors and a contact layer (forming contacts, interconnects and / or vias therein) and one or more dielectric layers.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A semi-trailer hook, characterized in that: include: A bracket, the bracket comprising a fixed end and a clamp end, the clamp end comprising an upper clamp part and a lower clamp part; A locking rod, wherein the locking rod is threadedly connected to the lower jaw portion, the locking rod passes through the lower jaw portion and abuts against the upper jaw portion, a groove is provided on the outer wall surface of the locking rod facing the bracket, a continuous inclined sliding surface is provided on the upper end groove wall of the groove, and an angle between the inclined sliding surface and the horizontal plane is an acute angle; An L-shaped abutment plate is slidably disposed on the upper surface of the lower jaw portion, and a horizontal section of the L-shaped abutment plate is located in the groove; wherein, When the horizontal section of the L-shaped abutment plate contacts the lateral wall of the groove, the vertical section of the L-shaped abutment plate contacts the outer wall of the locking rod, and the top end of the locking rod contacts the lower surface of the upper clamp.

2. The semi-trailer hook according to claim 1, characterized in that: The upper surface of the lower jaw portion is provided with a through hole used in conjunction with the locking rod, and a sliding groove for cooperating with the sliding of the L-shaped abutment plate, and the L-shaped abutment plate is slidably arranged on the upper surface of the lower jaw portion through the sliding groove.

3. The semi-trailer hook according to claim 2, characterized in that: A spring is arranged in the slide groove, one end of the spring abuts against the groove wall of the slide groove, and the other end of the spring is connected to the L-shaped abutment plate.

4. The semi-trailer hook according to claim 2, characterized in that: Elastic rubber sheets are flexibly connected to the edges of two groove walls in the length direction of the slide groove, and the elastic rubber sheets are used to close the groove opening of the slide groove.

5. The semi-trailer hook according to claim 1, characterized in that: The top end of the locking rod is provided with a sphere, and the lower surface of the upper clamp part is provided with a spherical groove matched with the sphere.

6. The semi-trailer hook according to claim 1, characterized in that: The length of the vertical section of the L-shaped abutment plate is equal to the length of the locking rod.

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