CN117944409A - Trailer arm connecting pipe and vehicle - Google Patents

Abstract

The application provides a trailer arm connecting pipe and a vehicle, and relates to the technical field of automobile parts. The trailer arm connection tube includes: the anti-theft device comprises a connecting pipe, an anti-theft assembly, a transmission assembly, a latch body and a locking pin, wherein the anti-theft assembly, the transmission assembly, the latch body and the locking pin are arranged on the connecting pipe; when the anti-theft component is in the first working position, the anti-theft component is in driving connection with the transmission component, and the latch body and the locking pin are respectively matched with the transmission component so as to extend out or retract into the connecting pipe together under the driving of the anti-theft component; when the anti-theft component is in the second working position, the anti-theft component is in driving connection with the transmission component, and the anti-theft component cannot drive the latch body and the locking pin to act. The trailer arm connecting pipe can prevent the bolt body from falling off, eliminate the gap between the connecting pipe and the trailer lever connecting port, and solve the problem of dispersion of functional parts.

Description

Trailer arm connecting pipe and vehicle

Technical Field

The application relates to the technical field of automobile parts, in particular to a trailer arm connecting pipe and a vehicle.

Background

Along with the development of economy and the progress of society, the living standard of people is continuously improved, the family passenger cars are more and more popular, the trailers and the motor home slowly enter the field of vision of the masses, more and more vehicles start to install trailer traction devices, and the connection devices such as trailer arm connection pipes are not used.

The existing trailer arm connecting pipe is connected with the trailer lever square opening through bolts, namely corresponding through holes are respectively formed in the trailer arm connecting pipe and the trailer lever square opening, and the bolts are sequentially inserted into the two through holes to realize connection between the trailer arm connecting pipe and the trailer lever square opening. The plug of bolt is usually manual operation, and the operation is comparatively loaded down with trivial details, and consumes the manpower. Moreover, the vehicle jolts in the running process, and the bolt is easy to lose under the working condition of long-time vibration, so that the connection between the trailer arm connecting pipe and the trailer lever square opening is failed. In addition, in order to make the square pipe can easily insert in the square mouth of trailer thick stick, the cross-section size of square pipe is less than the cross-section size of trailer thick stick square mouth, has the clearance between the two after connecting, can have vibrations and abnormal sound at the driving in-process to influence driving safety.

Disclosure of Invention

The application aims to overcome the defects in the prior art, and provides the trailer arm connecting pipe and the vehicle, which can prevent the plug pin body from falling off, eliminate the gap between the connecting pipe and the connecting port of the trailer lever, are simple and convenient to operate, and solve the problem of dispersion of functional parts of the traditional trailer arm connecting pipe.

In order to achieve the above purpose, the technical scheme adopted by the embodiment of the application is as follows:

In one aspect of an embodiment of the present application, there is provided a trailer arm connection tube comprising: the anti-theft device comprises a connecting pipe, an anti-theft assembly, a transmission assembly, a latch body and a locking pin, wherein the anti-theft assembly, the transmission assembly, the latch body and the locking pin are arranged on the connecting pipe; the anti-theft component is provided with a first working position and a second working position relative to the connecting pipe, when the anti-theft component is in the first working position, the anti-theft component is in driving connection with the transmission component, and the latch body and the locking pin are respectively matched with the transmission component so as to jointly extend out of or retract into the connecting pipe under the driving of the anti-theft component; when the anti-theft component is in the second working position, the anti-theft component is in driving connection with the transmission component, and the anti-theft component cannot drive the latch body and the locking pin to act.

Optionally, the anti-theft component comprises a handle body, a lockset rotationally arranged on the handle body, and a force transmission block slidingly arranged on the handle body, the transmission component comprises a force transmission shaft, a force transmission groove is arranged on the side wall of the force transmission shaft, and the force transmission groove corresponds to the force transmission block in position; the lock is in driving connection with the force transmission block, when the lock rotates to a first working position along a first direction, the force transmission block extends into the force transmission groove, and the force transmission block is matched with the handle body and the force transmission shaft at the same time, so that the handle body and the force transmission shaft synchronously rotate; when the lockset rotates to a second working position along a second direction, the force transmission block is retracted into the handle body and separated from the force transmission shaft, and the handle body is disconnected with the force transmission shaft, wherein the second direction is opposite to the first direction.

Optionally, the lock comprises a lock body and a locking plate fixedly connected with the lock body, wherein the locking plate is provided with a main body part and a protruding part arranged at the edge of the main body part; the anti-theft component also comprises a reset piece which is arranged on the handle body in a sliding way, one end of the reset piece is propped against the handle body, and the opposite end of the reset piece is propped against one side of the force transmission block, which is far away from the force transmission shaft; when the lock body rotates along the second direction, the convex part of the lock plate is propped against the force transmission block, the force transmission block is retracted into the handle body, and the reset piece is in a deformation energy storage state; when the lock body rotates along the first direction, the main body part of the lock plate faces the force transmission block and is arranged at intervals with the force transmission block, and the reset piece drives the force transmission block to extend into the force transmission groove.

Optionally, the handle body is internally provided with a containing groove for containing the force transmission block, two opposite sides of the force transmission block are provided with lugs, and when the anti-theft component is in the first working position, the lugs are propped against the inner wall of the containing groove so as to prevent the force transmission block from separating from the containing groove.

Optionally, the transmission assembly further comprises a first bevel gear coaxially connected with the force transmission shaft, a second bevel gear matched with the first bevel gear, a screw rod coaxially connected with the second bevel gear and a locking sliding block matched with the screw rod, and the locking sliding block is respectively matched with the latch body and the locking pin.

Optionally, the transmission assembly comprises a screw and a locking slide block matched with the screw, the screw is parallel to the axis of the connecting pipe, a linkage structure is arranged on the locking slide block, and the linkage structure is matched with the latch body and the locking pin respectively.

Optionally, the linkage structure comprises a guide wire, the latch body is provided with a guide groove, the side wall of the guide groove comprises a straight side wall and an inclined side wall connected with the straight side wall, a limit column is further arranged in the guide groove, and the guide wire is clamped between the side wall of the guide groove and the limit column; the guide wire comprises an inclined section, a first straight section and a second straight section which are respectively connected with two opposite ends of the inclined section, and the inclined section is parallel to the inclined side wall; when the first straight section is attached to the straight side wall, the bolt body is retracted into the connecting pipe; when the second straight section is attached to the straight side wall, the bolt body extends out of the connecting pipe.

Optionally, the linkage structure includes the first inclined plane that sets up on the locking slider, is equipped with on the locking pin with first inclined plane complex second inclined plane, the locking slider promotes the locking pin through first inclined plane and stretches out, is equipped with the shell fragment on the locking pin, and the shell fragment supports with the inner wall of connecting pipe and holds, and the shell fragment is used for making the locking pin shrink in the connecting pipe.

Optionally, the linkage structure comprises a first inclined plane arranged on the locking slide block and a first plane connected with the end part of the first inclined plane, and the locking pin is provided with a second inclined plane matched with the first inclined plane and a second plane matched with the first plane; when the first straight section is attached to the straight side wall, the second plane is matched with the first plane, and the locking pin is retracted into the connecting pipe; when the second straight section is attached to the straight side wall, the second inclined surface is matched with the first inclined surface, and the locking pin extends out of the connecting pipe.

In another aspect of an embodiment of the present application, there is provided a vehicle comprising a trailer arm connection tube as in any one of the above.

The beneficial effects of the application include:

The application provides a trailer arm connection pipe, comprising: the anti-theft device comprises a connecting pipe, an anti-theft assembly, a transmission assembly, a latch body and a locking pin, wherein the anti-theft assembly, the transmission assembly, the latch body and the locking pin are arranged on the connecting pipe; the anti-theft component is provided with a first working position and a second working position relative to the connecting pipe, when the anti-theft component is in the first working position, the anti-theft component is in driving connection with the transmission component, and the latch body and the locking pin are respectively matched with the transmission component so as to jointly extend out of or retract into the connecting pipe under the driving of the anti-theft component; when the anti-theft component is in the second working position, the anti-theft component is in driving connection with the transmission component, and the anti-theft component cannot drive the latch body and the locking pin to act. The trailer arm connecting pipe is provided with an anti-theft component, a transmission component, a latch body matched with the transmission component and a locking pin, wherein the latch body and the locking pin are in linkage through the transmission component, and the transmission component is selectively connected with the anti-theft component in a driving way. When the transmission component is in driving connection with the anti-theft component, the anti-theft component can be rotated to drive the latch body and the locking pin to act through the transmission component, so that the latch body and the locking pin extend out of the connecting pipe together. When the transmission assembly is in driving connection with the anti-theft assembly, the transmission assembly cannot be controlled by the outside, and the latch body and the locking pin can be kept unchanged at the extending position. Above-mentioned trailer arm connecting pipe can prevent that the bolt body from droing, realizes the reliable connection between connecting pipe and the trailer thick stick connector, can also eliminate the clearance between connecting pipe and the trailer thick stick connector, and easy operation is convenient, and has solved the problem that traditional trailer arm connecting pipe functional part disperses.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a trailer arm connection pipe according to an embodiment of the present application;

Fig. 2 is a schematic diagram of an internal structure of a trailer arm connection pipe according to an embodiment of the present application;

FIG. 3 is a schematic diagram of an anti-theft assembly in a trailer arm connection pipe according to an embodiment of the present application;

FIG. 4 is a schematic illustration of one of the anti-theft assembly and the force transmission shaft in the trailer arm connection pipe provided by the embodiment of the application;

FIG. 5 is a second schematic diagram of an anti-theft assembly in a trailer arm connection pipe according to an embodiment of the present application;

FIG. 6 is a second schematic view of the anti-theft assembly and the force transmission shaft in the trailer arm connection pipe according to the embodiment of the present application;

FIG. 7 is an exploded view of the transmission assembly, latch body and locking pin in the trailer arm connection tube provided by an embodiment of the present application;

Fig. 8 is a schematic diagram showing the cooperation between a guide wire and a guide groove when a latch in a trailer arm connecting pipe is in a retracted state;

FIG. 9 is a schematic diagram showing the cooperation between a guide wire and a guide groove when a latch body in a trailer arm connecting pipe is in an extended state according to an embodiment of the present application;

FIG. 10 is a second schematic view of the engagement of the guide wire with the guide slot when the latch in the trailer arm connection pipe is in the extended state according to the embodiment of the present application;

FIG. 11 is a schematic illustration showing the cooperation of the locking slide block and the locking pin when the locking pin in the trailer arm connection pipe is in a retracted state according to an embodiment of the present application;

Fig. 12 is a schematic diagram illustrating the cooperation between a locking slider and a locking pin when the locking pin is in an extended state in a trailer arm connection pipe according to an embodiment of the present application;

fig. 13 is a second schematic view of the cooperation between the locking slide block and the locking pin when the locking pin in the trailer arm connection pipe is in the retracted state according to the embodiment of the present application.

Icon: 10-trailer arm connection pipe; 11-connecting pipes; 12-a transmission assembly; 121-a lead screw; 122-locking slide; 1221-a first ramp; 1222-a first plane; 123-a guide wire; 1231-inclined section; 1232-a first straight section; 1233-a second straight section; 124-locking the rotating shaft; 125-first bevel gear; 126-a second bevel gear; 127-latch seats; 128-force transmission shaft; 1281-a force transmission groove; 13-a latch body; 131-a guide groove; 1311-straight sidewalls; 1312-sloping sidewalls; 132-a limit column; 14-locking pins; 141-a second bevel; 142-a second plane; 143-shrapnel; 15-an anti-theft component; 151-a handle body; 1511-spring slots; 1512-receiving groove; 1512 a-transverse grooves; 1512 b-vertical slots; 152-lockset; 1521—a lock body; 1522-locking plate; 1522 a-a body portion; 1522 b-a boss; 153-force transfer block; 1531-lugs; 154-reset member.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. It should be noted that, under the condition of no conflict, the features of the embodiments of the present application may be combined with each other, and the combined embodiments still fall within the protection scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the product of the application, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

In one aspect of an embodiment of the present application, and referring to fig. 1 and 2, there is provided a trailer arm connection tube 10 comprising: the anti-theft device comprises a connecting pipe 11, an anti-theft assembly 15, a transmission assembly 12, a bolt body 13 and a locking pin 14, wherein the anti-theft assembly 15, the transmission assembly 12, the bolt body 13 and the locking pin 14 are arranged on the connecting pipe 11, the connecting pipe 11 is used for being inserted into a connecting port of a trailer lever, the bolt body 13 is used for being inserted into a bolt hole on the side wall of the connecting port after extending out of the connecting pipe 11, and the locking pin 14 is used for being abutted against the inner wall of the connecting port after extending out of the connecting pipe 11; the anti-theft component 15 is provided with a first working position and a second working position relative to the connecting pipe 11, when the anti-theft component 15 is in the first working position, the anti-theft component 15 is in driving connection with the transmission component 12, and the bolt body 13 and the locking pin 14 are respectively matched with the transmission component 12 so as to jointly extend out or retract into the connecting pipe 11 under the driving of the anti-theft component 15; when the anti-theft component 15 is in the second working position, the anti-theft component 15 is in driving connection with the transmission component 12, and the anti-theft component 15 cannot drive the latch body 13 and the locking pin 14 to act.

The connecting pipe 11 is used for being inserted into a connecting port of a trailer bar, the shape of the outer wall of the connecting pipe 11 is matched with the shape of the inner wall of the connecting port of the trailer bar, generally, the connecting pipe 11 is a square pipe, and the connecting port of the trailer bar is a square port. The anti-theft component 15 is rotatably disposed on the connection pipe 11, preferably on the outer wall of the connection pipe 11, so as to be convenient for a user to operate. The transmission assembly 12, the latch body 13 and the locking pin 14 are at least partially arranged in the connecting pipe 11, and the latch body 13 and the locking pin 14 are respectively matched with the transmission assembly 12 and can extend out or retract into the connecting pipe 11 under the driving of the transmission assembly 12.

The transmission assembly 12 is further selectively connected with the anti-theft assembly 15 in a driving manner, specifically, the anti-theft assembly 15 has a first working position and a second working position in a process of rotating relative to the connecting pipe 11, when the anti-theft assembly 15 rotates to the first working position, the anti-theft assembly 15 is connected with the transmission assembly 12 in a driving manner, and the transmission assembly 12 can be driven to act by rotating the anti-theft assembly 15, so that the latch body 13 and the locking pin 14 are driven to stretch. The side wall of the connecting pipe 11 is provided with through holes corresponding to the positions of the latch body 13 and the locking pin 14 respectively, and the side wall of the connecting port of the trailer lever is provided with a latch hole corresponding to the position of the latch body 13. The latch body 13 extends out of the connecting pipe 11 through the corresponding through hole under the drive of the transmission component 12 and then extends into the latch hole of the connecting port of the trailer lever, so that reliable connection between the connecting pipe 11 and the connecting port of the trailer lever is realized. The locking pin 14 extends out of the connecting pipe 11 through the through hole corresponding to the locking pin under the drive of the transmission component 12 and then abuts against the inner wall of the connecting port of the trailer lever, so that a gap between the connecting pipe 11 and the connecting port of the trailer lever is eliminated, vibration and abnormal sound in the driving process are reduced, and driving safety is improved. When the anti-theft component 15 rotates to the second working position, the anti-theft component 15 is in driving connection with the transmission component 12, even if the anti-theft component 15 rotates, the transmission component 12 cannot be driven, and then the current positions of the bolt body 13 and the locking pin 14 are kept unchanged, so that the anti-theft component 15 is prevented from being influenced by external factors such as jolt or the like in the driving process, or the bolt body 13 or the locking pin 14 is retracted into the connecting pipe 11 due to artificial misoperation, and further the connecting port connection between the connecting pipe 11 and the trailer bar is invalid or driving vibration and abnormal sound are caused.

In this embodiment, the structure of the anti-theft device 15 is not limited, as long as it can be selectively connected with the transmission device 12 in a driving manner and drive the transmission device 12 to operate. Also, the structure of the transmission assembly 12 is not limited as long as it can simultaneously cooperate with the latch body 13 and the locking pin 14 and drive the latch body 13 and the locking pin 14 to co-extend out of the connection pipe 11. In addition, the bolt body 13 and the locking pin 14 are co-extended to the connection pipe 11, and it is not necessary that the bolt body 13 and the locking pin 14 are simultaneously extended to the connection pipe 11, but the bolt body 13 and the locking pin 14 may be extended to the connection pipe 11 in sequence. The anti-theft component 15 may be driven manually, or may be driven by another driving component, which is not limited in this embodiment.

The trailer arm connecting pipe 10 is provided with an anti-theft component 15, a transmission component 12, a bolt body 13 and a locking pin 14 which are matched with the transmission component 12, wherein the bolt body 13 and the locking pin 14 are in linkage through the transmission component 12, and the transmission component 12 is selectively in driving connection with the anti-theft component 15. When the transmission assembly 12 is in driving connection with the anti-theft assembly 15, the anti-theft assembly 15 can be rotated to drive the latch body 13 and the locking pin 14 to act through the transmission assembly 12, so that the latch body 13 and the locking pin 14 extend out of the connecting pipe 11 together. When the transmission assembly 12 is disconnected from the anti-theft assembly 15, the transmission assembly 12 cannot be operated by the outside, and the latch body 13 and the locking pin 14 can be kept unchanged in the extended position. The trailer arm connecting pipe 10 can prevent the latch body 13 from falling off, realize reliable connection between the connecting pipe 11 and the trailer lever connecting port, can also eliminate the gap between the connecting pipe 11 and the trailer lever connecting port, is simple and convenient to operate, and solves the problem of dispersion of functional parts of the traditional trailer arm connecting pipe 10.

Alternatively, in one possible implementation of the embodiment of the present application, referring to fig. 3 to 6, the anti-theft component 15 includes a handle body 151, a lock 152 rotatably disposed on the handle body 151, and a force transmission block 153 slidably disposed on the handle body 151, where the handle body 151 is rotatably disposed on the connection pipe 11 and can rotate clockwise or counterclockwise relative to the connection pipe 11; the transmission assembly 12 includes a force transmission shaft 128, the force transmission shaft 128 being selectively drivingly connected to the handle body 151, thereby selectively drivingly connecting the transmission assembly 12 to the anti-theft assembly 15.

The side wall of the force transmission shaft 128 is provided with a force transmission groove 1281, and the force transmission groove 1281 corresponds to the position of the force transmission block 153; the lock 152 is in driving connection with a force transmission block 153, which is capable of driving the force transmission block 153 to slide in the handle body 151. As shown in fig. 5 and 6, when the lock 152 rotates to the first working position along the first direction, the force transmission block 153 extends into the force transmission groove 1281, the force transmission block 153 is simultaneously matched with the handle body 151 and the force transmission shaft 128, and the handle body 151 and the force transmission shaft 128 are connected through the force transmission block 153, so that the handle body 151 and the force transmission shaft 128 can synchronously rotate; at this time, the handle 151 is rotated to drive the rotation of the power transmission shaft 128, and the power transmission assembly 12 drives the latch body 13 and the locking pin 14 to operate. As shown in fig. 3 and 4, when the lock 152 rotates to the second working position along the second direction, the force transmission block 153 is retracted into the handle body 151 to be separated from the force transmission shaft 128, at this time, the handle body 151 is disconnected from the force transmission shaft 128, the handle body 151 can only idle, the force transmission shaft 128 cannot be driven to rotate, and the transmission assembly 12 cannot drive the latch body 13 and the locking pin 14 to act.

It will be appreciated that the second direction is opposite to the first direction, one of the first and second directions being clockwise and the other being counter-clockwise.

Optionally, in one implementation of the embodiment of the present application, the lock 152 includes a lock body 1521 and a locking plate 1522 fixedly connected to the lock body 1521; the lock body 1521 is rotatably disposed on the handle body 151 and reciprocally rotatable with respect to the handle body 151. The lock piece 1522 has a main body portion 1522a and a boss portion 1522b provided at an edge of the main body portion 1522a, the boss portion 1522b being closer to the force transmitting block 153 than the main body portion 1522 a. The anti-theft assembly 15 further includes a reset member 154 slidably disposed on the handle body 151, wherein one end of the reset member 154 abuts against the handle body 151, and the opposite end abuts against a side of the force transmission block 153 away from the force transmission shaft 128.

As shown in fig. 3 and fig. 4, when the lock body 1521 drives the lock tab 1522 to rotate along the second direction until the boss 1522b corresponds to the position of the force transmission block 153, the boss 1522b can drive the force transmission block 153 to retract into the handle body 151, thereby exiting the force transmission groove 1281 of the force transmission shaft 128, so that the handle body 151 is disconnected from the force transmission shaft 128, and the handle body 151 idles, so that the force transmission shaft 128 cannot be driven to rotate. At this time, the restoring member 154 is compressed and is in a deformed state. As shown in fig. 5 and fig. 6, when the lock body 1521 drives the lock tab 1522 to rotate along the first direction until the main body 1522a corresponds to the position of the force transmission block 153, because the main body 1522a is farther away from the force transmission block 153 than the protrusion 1522b, a space is left on one side of the force transmission block 153 away from the reset member 154, and at this time, the reset member 154 is reset to release energy, and the force transmission block 153 is driven to extend out of the handle body 151 and extend into the force transmission groove 1281, so as to realize connection between the handle body 151 and the force transmission shaft 128.

Illustratively, the restoring member 154 is a spring, a spring slot 1511 is provided in the handle body 151, the spring is provided in the spring slot 1511, one end of the spring abuts against the force transmission block 153, and the opposite end abuts against the bottom of the spring slot 1511.

For example, the main body portion 1522a of the locking plate 1522 is square, the protruding portion 1522b is semicircular, the linear edge of the protruding portion 1522b is equal to the linear edge of the main body portion 1522a in length and is overlapped, and the arc edge of the protruding portion 1522b is used for abutting against the force transmission block 153, so as to drive the force transmission block 153 to retract into the handle body 151.

Optionally, in one implementation manner of the embodiment of the present application, a receiving groove 1512 for receiving the force transmission block 153 is formed in the handle body 151, and two opposite sides of the force transmission block 153 are provided with a lug 1531, where when the anti-theft component 15 is in the first working position, the lug 1531 abuts against an inner wall of the receiving groove 1512 to prevent the force transmission block 153 from being separated from the receiving groove 1512.

The longitudinal sections of the accommodating groove 1512 and the force transmitting block 153 are T-shaped, the accommodating groove 1512 includes a horizontal groove 1512a and a vertical groove 1512b, an upper portion of the force transmitting block 153 and the lug 1531 slide up and down in the horizontal groove 1512a, and a lower portion of the force transmitting block 153 slides up and down in the vertical groove 1512 b. As shown in fig. 6, when the lock 152 rotates in the first direction to the first working position, the lower portion of the force transmission block 153 extends into the force transmission groove 1281, and the side of the lug 1531 facing the force transmission groove 1281 abuts against the bottom of the transverse groove 1512a, so that the force transmission block 153 is prevented from being separated from the accommodating groove 1512, and shake of the force transmission block 153 is reduced.

Optionally, referring again to fig. 2, in one possible implementation manner of the embodiment of the present application, the transmission assembly 12 further includes a first bevel gear 125 coaxially connected to the transmission shaft 128, a second bevel gear 126 mated with the first bevel gear 125, a screw rod 121 coaxially connected to the second bevel gear 126, and a locking slider 122 mated with the screw rod 121, where the locking slider 122 mates with the latch body 13 and the locking pin 14, respectively.

The axial dimension of the connection pipe 11 is large compared to the radial dimension, and therefore the arrangement of the transmission assembly 12 mainly uses the axial space of the connection pipe 11. The screw rod 121 is disposed along the axial direction of the connection pipe 11, and the force transmission shaft 128 is disposed along the radial direction of the connection pipe 11, and the first bevel gear 125 and the second bevel gear 126 cooperate to convert the radial rotational movement of the force transmission shaft 128 around the connection pipe 11 into the axial rotational movement of the screw rod 121 around the connection pipe 11. The screw rod 121 is sleeved with a locking slide block 122 in threaded fit with the screw rod, and the screw rod 121 is driven to rotate, so that the locking slide block 122 can be driven to reciprocate along the axial direction of the connecting pipe 11. The locking slide block 122 is matched with the bolt body 13 and the locking pin 14, and then the linear motion of the locking slide block along the axial direction of the connecting pipe 11 is converted into the linear motion of the bolt body 13 and the locking pin 14 along the radial direction of the connecting pipe 11 through a matching structure. The above structure reasonably uses the space in the connection pipe 11 to convert the rotation of the handle body 151 into the telescopic movement of the latch body 13 and the locking pin 14 step by step.

The transmission shaft 128 and the first bevel gear 125, the screw 121 and the second bevel gear 126 may be directly connected, or may be indirectly connected through other structures. Illustratively, the force transmission shaft 128 is connected with the first bevel gear 125 through a locking rotating shaft 124, one end of the locking rotating shaft 124 is coaxially connected with the force transmission shaft 128, and the first bevel gear 125 is sleeved on the other end of the locking rotating shaft 124.

Optionally, in an implementation manner of the embodiment of the present application, referring to fig. 7, the transmission assembly 12 includes a screw rod 121 and a locking slider 122 matched with the screw rod 121, the screw rod 121 is parallel to the axis of the connecting pipe 11, and a linkage structure is disposed on the locking slider 122 and is respectively matched with the latch body 13 and the locking pin 14.

A screw rod 121 is arranged in the connecting pipe 11, a locking slide block 122 in threaded fit with the screw rod 121 is sleeved on the screw rod 121, and the screw rod 121 is driven to rotate, so that the locking slide block 122 can be driven to reciprocate along the axial direction of the connecting pipe 11. Since the connecting port of the trailer lever is located at the radial outer side of the connecting pipe 11, the locking slide block 122 is further provided with a linkage structure, and the locking slide block 122 is respectively matched with the latch body 13 and the locking pin 14 through the linkage structure, so that the movement of the locking slide block 122 in the axial direction of the connecting pipe 11 is converted into the movement of the latch body 13 and the locking pin 14 in the radial direction of the connecting pipe 11.

In this embodiment, the linkage structure is not limited, and the linkage structure may be a part of the locking slider 122, that is, a structural feature of a local area of the locking slider 122, or may be a separate component provided on the locking slider 122, so long as the linkage structure can convert the movement of the locking slider 122 in the axial direction of the connection pipe 11 into the movement of the latch body 13 and the locking pin 14 in the radial direction of the connection pipe 11.

Illustratively, the two latch bodies 13 include two latch bodies 13 symmetrically disposed at two sides of the screw rod 121, and the two latch bodies 13 simultaneously extend out of the connection pipe 11 and are inserted into latch holes on the side walls of the connection port under the driving of the locking slider 122. The two plug bodies 13 are arranged, so that the reliability of connection between the connecting pipe 11 and the connecting port of the trailer lever can be further improved.

Optionally, in one implementation manner of the embodiment of the present application, referring to fig. 7 to 10, the linkage structure includes a guide wire 123, a guide groove 131 is provided on the latch body 13, a side wall of the guide groove 131 includes a flat side wall 1311 and an inclined side wall 1312 connected with the flat side wall 1311, a limit post 132 is further provided in the guide groove 131, and the guide wire 123 is clamped between the side wall of the guide groove 131 and the limit post 132; the guide wire 123 includes an inclined section 1231, a first straight section 1232 and a second straight section 1233 connected to opposite ends of the inclined section 1231, respectively, the inclined section 1231 being parallel to the inclined side wall 1312; when the first straight segment 1232 is attached to the straight side wall 1311, the latch body 13 is retracted into the connecting tube 11; when the second straight segment 1233 is attached to the straight side wall 1311, the latch body 13 extends out of the connecting tube 11.

In this embodiment, the linkage structure is a separate part guide wire 123 provided on the locking slider 122, and the locking slider 122 drives the latch body 13 to move along the radial direction of the connection pipe 11 through the guide wire 123. At this time, the locking slider 122 may be directly engaged with the locking pin 14, or may be engaged with the locking pin 14 through another separate component. The guide wire 123 is provided to pull the latch body 13 and the locking pin 14 apart from each other by a certain distance, thereby avoiding interference between the two. As shown in fig. 8, when the first straight segment 1232 of the guide wire 123 is engaged with the straight side wall 1311 of the guide groove 131, the latch body 13 is retracted into the connection pipe 11. The locking slider 122 drives the guide wire 123 to move, and as shown in fig. 9, when the first straight section 1232 of the guide wire 123 is separated from the straight side wall 1311 of the guide groove 131 and, at the same time, the inclined section 1231 of the guide wire 123 is engaged with the inclined side wall 1312 of the guide groove 131, the latch body 13 gradually protrudes out of the connection pipe 11. The locking slide 122 continues to drive the guide wire 123, as shown in fig. 10, and after the inclined segment 1231 of the guide wire 123 moves to be separated from the inclined side wall 1312 of the guide groove 131, the second flat segment 1233 of the guide wire 123 is engaged with the flat side wall 1311 of the guide groove 131, and the latch body 13 is maintained in the extended position.

And when the screw rod 121 is reversed and the locking slider 122 drives the guide wire 123 to move in the opposite direction, the latch body 13 is changed from the extended state to the retracted state. The principle of this process is the same as that of the latch body 13 changing from the retracted state to the extended state, and this embodiment will not be described here.

The structure of the guide groove 131 and the guide wire 123 can convert the radial movement of the locking slider 122 in the connecting pipe 11 into the axial movement of the latch body 13 in the connecting pipe 11, and the latch body 13 can be controlled to extend or retract by the forward and reverse rotation of the screw rod 121, so that the structure is simple and easy to control.

Alternatively, in one possible implementation of the embodiment of the present application, the transmission assembly 12 further includes a latch block 127, the latch block 127 being fixed in the connection pipe 11, the latch body 13 being slidably disposed on a side wall of the latch block 127, the latch block 127 guiding movement of the latch body 13.

Optionally, in an implementation manner of the embodiment of the present application, referring to fig. 11 and 12, the linkage structure includes a first inclined plane 1221 disposed on the locking slider 122, a second inclined plane 141 matched with the first inclined plane 1221 is disposed on the locking pin 14, the locking slider 122 pushes the locking pin 14 to stretch out through the first inclined plane 1221, a resilient piece 143 is disposed on the locking pin 14, the resilient piece 143 abuts against an inner wall of the connecting pipe 11, and the resilient piece 143 is used for retracting the locking pin 14 into the connecting pipe 11.

In this embodiment, the linkage structure is a structural feature of a local area of the locking slider 122, and at this time, the locking slider 122 is directly matched with the locking pin 14 through an inclined plane. The first inclined surface 1221 and the second inclined surface 141 can be attached to each other, and the first inclined surface 1221 is disposed at an acute angle to the axis of the screw 121. When the first inclined surface 1221 is engaged with the second inclined surface 141, the locking slider 122 moves axially along the connecting tube 11, so as to push the locking pin 14 to extend radially along the connecting tube 11.

It will be appreciated that the direction of inclination of the first inclined surface 1221 on the locking slider 122 and the direction of inclination of the inclined section 1231 on the guide wire 123 should ensure that the locking pin 14 and the latch body 13 are driven to co-extend from the connection tube 11 when the locking slider 122 is moved in a certain direction.

As shown in fig. 11, when the lock pin 14 is in the retracted state, the elastic piece 143 is in the natural state, and the end of the elastic piece 143 abuts against the inner wall of the connection pipe 11. As shown in fig. 12, when the locking pin 14 is gradually protruded from the connection pipe 11 by the driving of the locking slider 122, the elastic piece 143 is compressively deformed to store energy, and at this time, the locking slider 122 applies pressure to the locking pin 14 to maintain the protruded state of the locking pin 14. When the screw rod 121 is reversed and the lock slider 122 moves in the opposite direction, the elastic piece 143 returns to the original state after releasing the pressure applied to the lock pin 14, and the lock pin 14 is retracted into the connection pipe 11 to achieve the return.

For example, the two elastic pieces 143 include two elastic pieces 143, the two elastic pieces 143 are symmetrically disposed at two sides of the locking pin 14, and the two elastic pieces 143 are simultaneously propped against the inner wall of the connecting pipe 11, so that the stress of the locking pin 14 is more balanced, and the locking pin 14 is prevented from being inclined due to uneven stress in the retraction process.

Alternatively, in one possible manner of the embodiment of the present application, the linkage structure includes a first inclined surface 1221 provided on the lock slider 122 and a first flat surface 1222 connected to an end of the first inclined surface 1221, and the lock pin 14 is provided with a second inclined surface 141 engaged with the first inclined surface 1221 and a second flat surface 142 engaged with the first flat surface 1222.

As shown in fig. 8 and 13, when the first straight section 1232 of the guide wire 123 is engaged with the straight side wall 1311 of the guide groove 131, the latch body 13 is retracted into the connection pipe 11, the second flat surface 142 of the locking pin 14 is engaged with the first flat surface 1222 of the locking slider 122, and the locking pin 14 is also retracted into the connection pipe 11. Referring to fig. 9 in combination, the locking slider 122 drives the guide wire 123 to move, and drives the latch body 13 to gradually extend, so that the second plane 142 of the locking pin 14 moves relative to the first plane 1222 of the locking slider 122, but still maintains the mating relationship. Referring to fig. 11 in combination, when the intersection point of the inclined section 1231 and the second straight section 1233 of the guide wire 123 coincides with the connection point of the straight side wall 1311 and the inclined side wall 1312 of the guide slot 131, the intersection point of the second flat surface 142 and the second inclined surface 141 of the locking pin 14 coincides with the intersection point of the first flat surface 1222 and the first inclined surface 1221 of the locking slider 122, and at this time, the latch body 13 extends out of the connection tube 11, and the locking pin 14 is still in the retracted state, but is about to extend out of the connection tube 11. The locking slider 122 continues to drive the guide wire 123 to move, and as shown in fig. 10 and 12, the latch body 13 is maintained at the extended position while the second inclined surface 141 of the locking pin 14 is engaged with the first inclined surface 1221 of the locking slider 122, and the locking pin 14 is extended from the connection pipe 11, when the second straight section 1233 of the guide wire 123 is engaged with the straight side wall 1311 of the guide groove 131.

In this embodiment, in the process of moving the locking slider 122 in a certain direction, the trailer arm connection pipe 10 can sequentially achieve three states: the first state is that the bolt body 13 and the locking pin 14 are both in a retracted state; the second state is that the bolt body 13 is in an extending state and the locking pin 14 is in a retracting state; and in the third state, the bolt body 13 and the locking pin 14 are in an extending state. That is, the latch body 13 and the locking pin 14 have a interlocking relationship, but do not extend out of the connection pipe 11 at the same time. The function of the trailer arm connecting pipe 10 is realized in two steps, wherein the first step is to realize the extension of the latch body 13, so that the connecting pipe 11 is reliably connected with the trailer lever connecting port, and the second step is to realize the extension of the locking pin 14, so that the gap between the connecting pipe 11 and the trailer lever connecting port is eliminated.

The present embodiment also provides a vehicle comprising a trailer arm connection tube 10 as claimed in any one of the above.

The vehicle includes the same structure and advantages as the trailer arm connection tube 10 of the previous embodiment. The structure and advantages of the trailer arm connection tube 10 have been described in detail in the previous embodiments, and will not be described in detail here.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A trailer arm connection tube, comprising: the anti-theft device comprises a connecting pipe, an anti-theft assembly, a transmission assembly, a latch body and a locking pin, wherein the anti-theft assembly, the transmission assembly, the latch body and the locking pin are arranged on the connecting pipe, the connecting pipe is used for being inserted into a connecting port of a trailer lever, the latch body is used for being inserted into a latch hole on the side wall of the connecting port after extending out of the connecting pipe, and the locking pin is used for being propped against the inner wall of the connecting port after extending out of the connecting pipe;

The anti-theft component is provided with a first working position and a second working position relative to the connecting pipe, when the anti-theft component is positioned in the first working position, the anti-theft component is in driving connection with the transmission component, and the latch body and the locking pin are respectively matched with the transmission component so as to jointly extend out of or retract into the connecting pipe under the driving of the anti-theft component; when the anti-theft component is in the second working position, the anti-theft component is in driving connection with the transmission component, and the anti-theft component cannot drive the bolt body and the locking pin to act.

2. The trailer arm connection pipe as claimed in claim 1, wherein said anti-theft assembly comprises a handle body, a lock rotatably provided on said handle body, and a force transmission block slidably provided on said handle body, said transmission assembly comprising a force transmission shaft, a force transmission groove provided on a side wall of said force transmission shaft, said force transmission groove corresponding in position to said force transmission block;

The lock is in driving connection with the force transmission block, when the lock rotates to the first working position along the first direction, the force transmission block stretches into the force transmission groove, and the force transmission block is matched with the handle body and the force transmission shaft at the same time, so that the handle body and the force transmission shaft synchronously rotate; when the lockset rotates to a second working position along a second direction, the force transmission block is retracted into the handle body and separated from the force transmission shaft, and the handle body is disconnected from the force transmission shaft, wherein the second direction is opposite to the first direction.

3. The trailer arm connection tube of claim 2, wherein the lock comprises a lock body and a lock tab fixedly connected to the lock body, the lock tab having a main body portion and a boss portion disposed at an edge of the main body portion; the anti-theft assembly further comprises a reset piece which is arranged on the handle body in a sliding manner, one end of the reset piece is propped against the handle body, and the opposite end of the reset piece is propped against one side, away from the force transmission shaft, of the force transmission block;

When the lock body rotates along the second direction, the protruding part of the locking plate is propped against the force transmission block, the force transmission block is retracted into the handle body, and the reset piece is in a deformation energy storage state; when the lock body rotates along the first direction, the main body part of the locking plate faces the force transmission block and is arranged at intervals with the force transmission block, and the reset piece drives the force transmission block to extend into the force transmission groove.

4. The trailer arm connection tube of claim 2, wherein said handle body has a receiving slot for receiving said force-transmitting block, and wherein opposite sides of said force-transmitting block have lugs, said lugs being in abutment with an inner wall of said receiving slot when said anti-theft assembly is in said first operating position to prevent said force-transmitting block from being disengaged from said receiving slot.

5. The trailer arm connection tube of claim 2, wherein the transmission assembly further comprises a first bevel gear coaxially coupled to the force transfer shaft, a second bevel gear mated to the first bevel gear, a lead screw coaxially coupled to the second bevel gear, and a locking slide mated to the lead screw, the locking slide mated to the latch body and the locking pin, respectively.

6. The trailer arm connection tube of claim 1, wherein the transmission assembly comprises a screw and a locking slide block matched with the screw, the screw is parallel to the axis of the connection tube, and a linkage structure is arranged on the locking slide block and is respectively matched with the bolt body and the locking pin.

7. The trailer arm connection tube of claim 6, wherein the linkage structure comprises a guide wire, the latch body is provided with a guide groove, the side wall of the guide groove comprises a straight side wall and an inclined side wall connected with the straight side wall, a limit post is further arranged in the guide groove, and the guide wire is clamped between the side wall of the guide groove and the limit post; the guide wire comprises an inclined section, a first straight section and a second straight section which are respectively connected with two opposite ends of the inclined section, and the inclined section is parallel to the inclined side wall;

When the first straight section is attached to the straight side wall, the latch body is retracted into the connecting pipe; when the second straight section is attached to the straight side wall, the plug pin body extends out of the connecting pipe.

8. The trailer arm connection tube of claim 6, wherein the linkage structure comprises a first inclined surface arranged on the locking slide block, a second inclined surface matched with the first inclined surface is arranged on the locking pin, the locking slide block pushes the locking pin to extend out through the first inclined surface, a spring piece is arranged on the locking pin and is propped against the inner wall of the connection tube, and the spring piece is used for enabling the locking pin to retract into the connection tube.

9. The trailer arm connection tube of claim 7, wherein said linkage comprises a first ramp disposed on said lock slide and a first flat surface connected to an end of said first ramp, said lock pin having a second ramp engaging said first ramp and a second flat surface engaging said first flat surface;

When the first straight section is attached to the straight side wall, the second plane is matched with the first plane, and the locking pin is retracted into the connecting pipe; when the second straight section is attached to the straight side wall, the second inclined surface is matched with the first inclined surface, and the locking pin extends out of the connecting pipe.

10. A vehicle comprising a trailer arm connection tube as claimed in any one of claims 1 to 9.