CN213035610U - Towing hook - Google Patents

Abstract

The utility model provides a tow hook, relates to the auto parts field, including connecting rod, spindle nose and tow ball, the connecting rod is the straight-bar, the spindle nose with the tow ball is located respectively the both ends of connecting rod the middle part of connecting rod has the bolt hole that runs through the connecting rod connects two cars when the car needs to pull for the tow hook is more portable.

Description

Towing hook

Technical Field

The utility model relates to an auto parts field, concretely relates to tow hook.

Background

The towing hook is a common part of an automobile and is used for towing a vehicle which cannot normally run. Most of the current tow hooks are usually welded with a vehicle body into a whole, and a front bumper and a rear bumper are mostly required to be installed on the vehicle, the shape of the front bumper and the rear bumper is influenced to a certain extent by the form of welding the front bumper and the rear bumper into a whole, a large tow hook hole needs to be reserved at the corresponding position of the front bumper and the rear bumper, the appearance of the bumper is influenced, meanwhile, the possibility that the exposed part of the integrated tow hook is corroded is increased, the strength of the tow hook is reduced, and the use safety of the tow hook is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a tow hook connects two cars when the car needs to pull for the tow hook is more portable.

The above technical purpose of the present invention can be achieved by the following technical solutions: the towing hook comprises a connecting rod, a shaft head and a towing ball, wherein the connecting rod is a straight rod, the shaft head and the towing ball are respectively positioned at two ends of the connecting rod, and a bolt hole penetrating through the connecting rod is formed in the middle of the connecting rod.

Preferably, the connecting rods are respectively connected with the axle head and the towing ball through bent connecting rods extending in an upward bending manner.

Preferably, the shaft head is a vertically arranged circular truncated cone.

Preferably, the diameter of the surface of the stub shaft on the side close to the tow ball is smaller than the diameter of the surface of the stub shaft on the side far from the tow ball.

Preferably, the connecting rod is further provided with an elastic telescopic part, the elastic telescopic part comprises a thin connecting rod, a thick sleeve rod, a thin elastic connecting plate and a thick elastic connecting plate, the thick sleeve rod is a hollow cylindrical rod, the thin connecting rod is inserted into the thick sleeve rod, the thin elastic connecting plate is a disc surface extending outwards in a radial mode from the edge of the tail end of the thin connecting rod, the thick elastic connecting plate is a disc surface extending inwards from the end edge of the thick sleeve rod to be close to the surface of the thin connecting rod, and the thin elastic connecting plate is connected with the thick elastic connecting plate through a spring.

Preferably, a protective frame for preventing the thin elastic plate from being excessively stretched and contracted is further arranged in the thick sleeve rod.

Preferably, the protective frame comprises a fixed bottom plate, a protective elastic plate, a wrapping and clamping side plate and a protective outer plate, the fixed bottom plate is a plane plate connected with the inner wall of the thick loop bar, the protective elastic plate is a disc panel connected to the surface of the fixed bottom plate through a spring, the wrapping and clamping side plate is a cylindrical wall surface extending from the edge of the protective elastic plate to one side of the thick elastic plate, and the protective outer plate is a disc panel extending from the end edge of the wrapping and clamping side plate inwards.

Preferably, the nail-inserting device further comprises an aligning part, wherein the aligning part comprises an aligning nail and a nail-inserting groove, the nail-inserting groove comprises a straight groove and a tightening groove, the straight groove is a cylindrical groove which is inwards recessed from the surface of one side, close to the protective elastic plate, of the protective outer plate, and the tightening groove is a conical groove which is inwards continuously extended from the edge of the inner end of the straight groove and gradually gathers together to be intersected.

Preferably, still include conflict stabilizer, conflict stabilizer includes face protruding nail and bullet board recess, the face protruding nail is for certainly thin bullet board is close to the surface of protection bullet board one side is outside bellied, interval arrangement's toper protruding, bullet board recess is for certainly the protection bullet board is kept away from the surface of PMKD one side is inside sunken toper type recess.

Preferably, the protection device further comprises an auxiliary part, wherein the auxiliary part comprises an auxiliary straight plate and a guide inclined plate, the auxiliary straight plate is a flat plate which extends oppositely from the surfaces of the protection outer plate and the protection elastic plate, and the guide inclined plate is an inclined panel which faces oppositely from the tail end edges of the auxiliary straight plates on two sides and extends from the surface of the clamping side plate.

To sum up, the utility model discloses following beneficial effect has: when the automobile needs to be towed, the two automobiles are connected, so that the towing hook is more portable.

Drawings

Fig. 1 is a front view of a tow hook.

Fig. 2 is a top view of the tow hook.

Fig. 3 is an enlarged view of the elastic expansion part.

In the figure: 1. connecting rod, 2, spindle nose, 3, tow ball, 4, thin connecting rod, 5, thick loop bar, 6, thin bullet board, 7, PMKD, 8, protection diving board, 9, protection planking, 10, studded nail groove, 11, diving board recess, 12, assistance portion.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Embodiment 1, as shown in fig. 1 and 2, a tow hook includes a connecting rod 1, a shaft head 2, and a tow ball 3, where the connecting rod 1 is a straight rod, the shaft head 2 and the tow ball 3 are respectively located at two ends of the connecting rod 1, and a pin hole penetrating through the connecting rod 1 is formed in the middle of the connecting rod 1. Connect the trailer with spindle nose 2, be connected the chassis of the car that drags ball 3 and needs pulling, realize the trailer and be connected by the pulling. Wherein inserting the pin in the pin hole makes the connection more stable. The connecting rod 1 is respectively connected with the shaft head 2 and the towing ball 3 through a curved connecting rod 1 which is bent and extended upwards. The shaft head 2 is a vertical round table body. When needed, the shaft head can be processed to obtain a through hole so as to be better connected with the automobile chassis. The diameter of the surface of the shaft head 2 close to the side of the towing ball 3 is smaller than the diameter of the surface of the shaft head 2 far away from the side of the towing ball 3.

As shown in fig. 3, the connecting rod 1 is also provided with an elastic telescopic part, the elastic telescopic part comprises a thin connecting rod 4, a thick sleeve rod 5, a thin elastic connecting plate 6 and a thick elastic connecting plate, the thick sleeve rod 5 is a hollow cylindrical rod, the thin connecting rod 4 is inserted into the thick sleeve rod 5, the thin elastic connecting plate 6 is a disc surface extending from the edge of the tail end of the thin connecting rod 4 in an outward radiation manner, the thick elastic connecting plate is a disc surface extending from the end edge of the thick sleeve rod 5 to the inner side to be close to the surface of the thin connecting rod 4, and the thin elastic connecting plate 6 is connected with the thick elastic connecting plate through a spring. Elastic expansion portion makes connecting rod 1 possess flexible length and the ability of buffering striking, especially at the in-process that uses the tow hook to drag the installation, through pulling out thin connecting rod 4 from thick loop bar 5 can increase connecting rod 1's length, make things convenient for the installation of spindle nose 2 and tow ball 3, at the trailer in-process, if take place the tensile motion between thin connecting rod 4 and the thick loop bar 5, then can cushion through thin elastic connection board 6 and the spring between the side elastic connection board, the same reason, when taking place extrusion motion, the spring also can cushion.

And a protective frame for preventing the thin elastic plate 6 from being excessively stretched is arranged in the thick loop bar 5. The bearer bar includes PMKD 7, protection bullet board 8, package clamp curb plate and protection planking 9, and PMKD 7 is the plane board of connecting 5 inner walls of thick loop bars, and protection bullet board 8 is the disc panel through spring coupling in PMKD 7 surface, and package clamp curb plate is the cylinder wall that the edge of self preservation protection bullet board 8 extended to thick bullet board one side, and protection planking 9 is the disc panel that inwards extends from the terminal edge of package clamp curb plate. The protective frame can establish a protection architecture between thin bullet fishplate bar 6 and thick bullet fishplate bar, 6 move and when extruding the spring to thick bullet fishplate bar at thin bullet fishplate bar, can contact protection planking 9 in advance, protection planking 9 can stretch the spring that is located between protection springboard 8 and PMKD 7 through the connection of package clamp curb plate and protection springboard 8, make the spring of both sides send forth power simultaneously, meet and connect tensile displacement, the same reason, 6 extrusion and contact to protection springboard 8 side are played simultaneously to thin bullet fishplate bar 6, the spring of both sides still can send forth power simultaneously, play the duplicate protection effect.

The self-protection elastic plate is characterized by further comprising an aligning portion, wherein the aligning portion comprises an aligning nail and a stud groove 10, the stud groove 10 comprises a straight section groove and a tightening groove, the straight section groove is a cylindrical groove which is inwards sunken on the surface of one side, close to the protection elastic plate 8, of the self-protection outer plate 9, and the tightening groove is a conical groove which is inwards continued to extend from the edge of the inner end of the straight section groove and gradually gathers together. The shape of the aligning nail is matched with that of the stud groove 10 to be consistent, the tightening protrusions on the outer side of the aligning nail can enter the straight groove in advance, and then the thin elastic plate 6 is prevented from sliding on the protective outer plate 9 through the embedding of the aligning nail and the stud groove 10 in front, so that the extrusion is stable.

Still including conflict stability portion, conflict stability portion includes face protruding nail and bullet board recess 11, and the face protruding nail is outside bellied, the interval arrangement's toper arch for the surface that is close to protection bullet board 8 one side from thin bullet board 6, and bullet board recess 11 is the inside sunken tapered groove in surface that fixed baseplate 7 one side was kept away from for self preservation protection bullet board 8. When the thin elastic plate 6 moves to the direction of the protective elastic plate 8 to contact, the extrusion stability can be realized by inserting the plate surface convex nail into the elastic plate groove 11.

The self-protection type elastic plate is characterized by further comprising an auxiliary portion 12, wherein the auxiliary portion comprises an auxiliary straight plate and a guide inclined plate, the auxiliary straight plate is a plane plate which respectively extends from the surfaces of the protection outer plate 9 and the protection elastic plate 8 in an opposite mode, and the guide inclined plate is an inclined panel which extends from the tail end edges of the auxiliary straight plates on the two sides in an opposite mode and covers the surface of the side plate. The auxiliary part 12 can realize that the face convex nail is directly inserted into the elastic plate groove 11 and the alignment nail is directly inserted into the embedded nail groove 10, so that the situation that the face convex nail or the alignment nail cannot be embedded into the elastic plate groove 11 or the embedded nail groove 10 due to position shaking of the thin elastic plate 6 in the protective frame is avoided. Wherein, the guide sloping plate can guide the thin elastic plate 6 in motion to the auxiliary straight plate, and the alignment is realized through the guide of the auxiliary straight plate.

Claims (10)

1. The towing hook is characterized by comprising a connecting rod (1), a shaft head (2) and a towing ball (3), wherein the connecting rod (1) is a straight rod, the shaft head (2) and the towing ball (3) are respectively located at two ends of the connecting rod (1), and a bolt hole penetrating through the connecting rod (1) is formed in the middle of the connecting rod (1).

2. A towing hook according to claim 1, characterized in that the connecting rod (1) connects the stub shaft (2) and the towing ball (3) respectively by means of a curved connecting rod (1) extending bent upwards.

3. A tow hook according to claim 2, characterised in that the stub shaft (2) is a vertically disposed circular truncated cone.

4. A tow hook according to claim 3, c h a r a c t e r i z e d in that the diameter of the surface of the stub shaft (2) on the side close to the tow ball (3) is smaller than the diameter of the surface of the stub shaft (2) on the side remote from the tow ball (3).

5. A towing hook according to claim 1 or 4, characterized in that the connecting rod (1) is further provided with an elastic telescopic part, the elastic telescopic part comprises a thin connecting rod (4), a thick sleeve rod (5), a thin elastic connecting plate (6) and a thick elastic connecting plate, the thick sleeve rod (5) is a hollow cylindrical rod, the thin connecting rod (4) is inserted into the thick sleeve rod (5), the thin elastic connecting plate (6) is a disk surface radially extending outwards from the end edge of the thin connecting rod (4), the thick elastic connecting plate is a disk surface extending inwards from the end edge of the thick sleeve rod (5) to be close to the surface of the thin connecting rod (4), and the thin elastic connecting plate (6) and the thick elastic connecting plate are connected through a spring.

6. A tow hook according to claim 5, characterized in that the thick loop bar (5) is provided with a protective frame inside for preventing the thin spring plate (6) from over-extension.

7. A tow hook according to claim 6, wherein the protection frame comprises a fixed bottom plate (7), a protection elastic plate (8), a wrapping side plate and a protection outer plate (9), the fixed bottom plate (7) is a plane plate connected with the inner wall of the thick loop bar (5), the protection elastic plate (8) is a disc panel connected with the surface of the fixed bottom plate (7) through a spring, the wrapping side plate is a cylindrical wall surface extending from the edge of the protection elastic plate (8) to one side of the thick elastic plate, and the protection outer plate (9) is a disc panel extending inwards from the end edge of the wrapping side plate.

8. The tow hook according to claim 7, further comprising an aligning part, wherein the aligning part comprises an aligning nail and a nail embedding groove (10), the nail embedding groove (10) comprises a straight groove and a tightening groove, the straight groove is a cylindrical groove which is inwards recessed from the surface of one side, close to the protection elastic plate (8), of the protection outer plate (9), and the tightening groove is a conical groove which continuously extends inwards from the inner end edge of the straight groove and gradually converges together.

9. A tow hook according to claim 8, further comprising an interference stabilizer, wherein the interference stabilizer comprises a plate surface stud and a spring plate groove (11), the plate surface stud is a conical protrusion protruding outwards from the surface of the thin spring plate (6) on the side close to the protection spring plate (8) and arranged at intervals, and the spring plate groove (11) is a conical groove recessed inwards from the surface of the protection spring plate (8) on the side far away from the fixed base plate (7).

10. A tow hook according to claim 9, further comprising an auxiliary portion, wherein the auxiliary portion (12) comprises an auxiliary straight plate and a guide inclined plate, the auxiliary straight plate is a flat plate extending from the surface of the protection outer plate (9) and the surface of the protection elastic plate (8) to the opposite direction, and the guide inclined plate is an inclined plate extending from the surface of the wrapping side plate to the opposite direction from the end edge of the auxiliary straight plate at both sides.

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