Trailer arm connecting pipe and vehicle

Abstract

The utility model provides a trailer arm connecting pipe and a vehicle, and relates to the technical field of automobile parts. The trailer arm connecting pipe comprises a connecting pipe, an anti-theft assembly, a transmission assembly, a bolt body and a locking pin, the anti-theft assembly, the transmission assembly, the bolt body and the locking pin are arranged on the connecting pipe, the connecting pipe is used for being inserted into a connecting opening of a trailer lever, the bolt body is used for being inserted into a bolt hole in the side wall of the connecting opening after stretching out of the connecting pipe, and the locking pin is used for abutting against the inner wall of the connecting opening after stretching out of the connecting pipe; when the anti-theft assembly is located at the first working position, the anti-theft assembly is in driving connection with the transmission assembly, and the bolt body and the locking pin are matched with the transmission assembly so as to jointly stretch out of or retract into the connecting pipe under driving of the anti-theft assembly. And when the anti-theft assembly is located at the second working position, the anti-theft assembly and the transmission assembly release the driving connection, and the anti-theft assembly cannot drive the bolt body and the locking pin to act. According to the trailer arm connecting pipe, the bolt body can be prevented from falling off, a gap between the connecting pipe and a trailer lever connecting opening is eliminated, and the problem that functional parts are dispersed is solved.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and more specifically, to a trailer arm connecting pipe and a vehicle. Background Technology

[0002] With economic development, social progress, and the continuous improvement of people's living standards, family passenger cars are becoming more and more popular, and trailers and RVs are also gradually entering the public eye. More and more vehicles are starting to install trailer towing devices, which inevitably involve the use of trailer arm connecting pipes.

[0003] The existing trailer boom connecting pipe connects to the trailer block square opening via pins. Both the trailer boom connecting pipe and the trailer block square opening have corresponding through holes, and the pin is inserted into both holes sequentially to connect them. Inserting and removing the pins is usually done manually, which is cumbersome and labor-intensive. Furthermore, during vehicle operation, bumps and vibrations can cause the pins to easily fall off, leading to connection failure. In addition, to allow the square tube to easily insert into the trailer block square opening, the cross-sectional dimensions of the square tube are smaller than those of the trailer block square opening, resulting in a gap after connection. This gap causes vibration and abnormal noise during driving, affecting driving safety. Utility Model Content

[0004] The purpose of this application is to address the shortcomings of the prior art by providing a trailer arm connecting pipe and a vehicle that can prevent the pin from falling off and eliminate the gap between the connecting pipe and the trailer arm connection port. It is simple and convenient to operate and solves the problem of the scattered functional parts of traditional trailer arm connecting pipes.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0006] One aspect of this application provides a trailer arm connecting pipe, including: a connecting pipe, an anti-theft component, a transmission component, a pin body, and a locking pin disposed on the connecting pipe. The connecting pipe is used to insert into the connecting port of the trailer arm, the pin body is used to insert into a pin hole on the side wall of the connecting port after extending out of the connecting pipe, and the locking pin is used to abut against the inner wall of the connecting port after extending out of the connecting pipe. The anti-theft component has 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 driven to connect with the transmission component, and the pin body and the locking pin respectively cooperate with the transmission component to extend or retract into the connecting pipe together under the drive of the anti-theft component. When the anti-theft component is in the second working position, the anti-theft component is disengaged from the transmission component, and the anti-theft component cannot drive the pin body and the locking pin to move.

[0007] Optionally, the anti-theft component includes a handle body, a lock rotatably mounted on the handle body, and a force transmission block slidably mounted on the handle body. The transmission component includes a force transmission shaft with a force transmission groove on its side wall, the groove corresponding to the position of the force transmission block. The lock is driven to connect with the force transmission block. When the lock rotates to the first working position in the first direction, the force transmission block extends into the force transmission groove and simultaneously engages with the handle body and the force transmission shaft to make the handle body and the force transmission shaft rotate synchronously. When the lock rotates to the second working position in the second direction, the force transmission block retracts into the handle body and separates from the force transmission shaft, and the handle body is decoupled from the force transmission shaft. The second direction is opposite to the first direction.

[0008] Optionally, the lock includes a lock body and a lock plate fixedly connected to the lock body. The lock plate has a main body and a protrusion on the edge of the main body. The anti-theft component also includes a reset member slidably disposed on the handle body. One end of the reset member abuts against the handle body, and the other end abuts against the side of the force transmission block away from the force transmission axis. When the lock body rotates in the second direction, the protrusion of the lock plate abuts against the force transmission block, the force transmission block retracts into the handle body, and the reset member is in a deformed energy storage state. When the lock body rotates in the first direction, the main body of the lock plate faces the force transmission block and is spaced apart from the force transmission block. The reset member drives the force transmission block to extend into the force transmission groove.

[0009] Optionally, the handle body is provided with a receiving groove for accommodating the force transmission block, and the force transmission block is provided with lugs on opposite sides. When the anti-theft component is in the first working position, the lugs abut against the inner wall of the receiving groove to prevent the force transmission block from disengaging from the receiving groove.

[0010] Optionally, the transmission assembly further includes a first bevel gear coaxially connected to the force transmission shaft, a second bevel gear cooperating with the first bevel gear, a lead screw coaxially connected to the second bevel gear, and a locking slider cooperating with the lead screw. The locking slider cooperates with the pin body and the locking pin, respectively.

[0011] Optionally, the transmission assembly includes a lead screw and a locking slider that cooperates with the lead screw. The axis of the lead screw and the axis of the connecting pipe are parallel to each other. The locking slider is provided with a linkage structure, which cooperates with the pin body and the locking pin respectively.

[0012] Optionally, the linkage structure includes a guide wire, a guide groove on the pin body, the sidewall of the guide groove including a straight sidewall and an inclined sidewall connected to the straight sidewall, and a limiting post inside the guide groove. The guide wire is clamped between the sidewall of the guide groove and the limiting post. The guide wire includes an inclined section, a first straight section and a second straight section connected to opposite ends of the inclined section, and the inclined section is parallel to the inclined sidewall. When the first straight section is in contact with the straight sidewall, the pin body retracts into the connecting tube. When the second straight section is in contact with the straight sidewall, the pin body extends out of the connecting tube.

[0013] Optionally, the linkage structure includes a first inclined surface on the locking slider, a second inclined surface on the locking pin that cooperates with the first inclined surface, the locking slider pushing the locking pin out through the first inclined surface, and a spring piece on the locking pin that abuts against the inner wall of the connecting tube. The spring piece is used to retract the locking pin into the connecting tube.

[0014] Optionally, the linkage structure includes a first inclined surface disposed on the locking slider and a first flat surface connected to the end of the first inclined surface. The locking pin is provided with a second inclined surface that cooperates with the first inclined surface and a second flat surface that cooperates with the first flat surface. When the first straight section is in contact with the straight side wall, the second flat surface cooperates with the first flat surface, and the locking pin retracts into the connecting tube. When the second straight section is in contact with the straight side wall, the second inclined surface cooperates with the first inclined surface, and the locking pin extends out of the connecting tube.

[0015] In another aspect of the embodiments of this application, a vehicle is provided, including a trailer arm connecting pipe as described in any of the above.

[0016] The beneficial effects of this application include:

[0017] This application provides a trailer arm connecting pipe, including: a connecting pipe, an anti-theft component, a transmission component, a pin, and a locking pin disposed on the connecting pipe. The connecting pipe is inserted into the connecting port of the trailer arm. The pin, after extending out of the connecting pipe, is inserted into a pin hole on the side wall of the connecting port. The locking pin, after extending out of the connecting pipe, abuts against the inner wall of the connecting port. The anti-theft component has 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, it is driven to connect with the transmission component. The pin and locking pin respectively cooperate with the transmission component to extend or retract together into the connecting pipe under the drive of the anti-theft component. When the anti-theft component is in the second working position, it is disengaged from the transmission component, and the anti-theft component cannot drive the pin and locking pin. This trailer arm connecting pipe has an anti-theft component, a transmission component, a pin cooperating with the transmission component, and a locking pin disposed on the connecting pipe. The pin and locking pin are linked through the transmission component, which can be selectively driven to connect with the anti-theft component. When the transmission component is connected to the anti-theft component, rotating the anti-theft component will cause the transmission component to drive the pin and locking pin, causing them to extend out of the connecting tube. When the transmission component is disconnected from the anti-theft component, the transmission component cannot be operated externally, and the pin and locking pin will remain in the extended position. This trailer arm connecting tube prevents the pin from falling out, ensuring a reliable connection between the connecting tube and the trailer arm connection port. It also eliminates the gap between the connecting tube and the trailer arm connection port, making operation simple and convenient, and solving the problem of scattered functional parts in traditional trailer arm connecting tubes. Attached Figure Description

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the structure of the trailer arm connecting pipe provided in the embodiments of this application;

[0020] Figure 2 This is a schematic diagram of the internal structure of the trailer arm connecting pipe provided in an embodiment of this application;

[0021] Figure 3 This is one of the structural schematic diagrams of the anti-theft component in the trailer arm connecting pipe provided in the embodiments of this application;

[0022] Figure 4 This is one of the structural schematic diagrams of the anti-theft component and the force transmission shaft in the trailer arm connecting pipe provided in the embodiments of this application;

[0023] Figure 5 This is the second schematic diagram of the anti-theft component in the trailer arm connecting pipe provided in the embodiments of this application;

[0024] Figure 6 This is a second schematic diagram of the anti-theft component and force transmission shaft in the trailer arm connecting pipe provided in this application embodiment;

[0025] Figure 7 An exploded view of the transmission assembly, pin body, and locking pin in the trailer arm connecting pipe provided in the embodiment of this application;

[0026] Figure 8 A schematic diagram showing the engagement of the guide wire and the guide groove when the pin body in the trailer arm connecting pipe provided in this application is in the retracted state;

[0027] Figure 9 One of the schematic diagrams showing the engagement of the guide wire and the guide groove when the pin body in the trailer arm connecting pipe provided in the embodiment of this application is in the extended state;

[0028] Figure 10 This is the second schematic diagram showing the engagement of the guide wire and the guide groove when the pin body in the trailer arm connecting pipe provided in this application is in the extended state.

[0029] Figure 11 This is one of the schematic diagrams showing the engagement between the locking slider and the locking pin when the locking pin in the trailer arm connecting pipe is in the retracted state, according to an embodiment of this application.

[0030] Figure 12A schematic diagram illustrating the engagement between the locking slider and the locking pin when the locking pin in the trailer arm connecting pipe provided in this embodiment of the application is in the extended state;

[0031] Figure 13 This is the second schematic diagram showing the engagement between the locking slider and the locking pin in the trailer arm connecting pipe provided in this application embodiment when the locking pin is in the retracted state.

[0032] Icons: 10-Trailer arm connecting pipe; 11-Connecting pipe; 12-Transmission assembly; 121-Lead screw; 122-Locking slider; 1221-First inclined surface; 1222-First flat surface; 123-Guide screw; 1231-Inclined section; 1232-First straight section; 1233-Second straight section; 124-Locking shaft; 125-First bevel gear; 126-Second bevel gear; 127-Pin seat; 128-Force transmission shaft; 1281-Force transmission groove; 13-Pin body; 131-Guide groove; 1311 - Straight sidewall; 1312- Inclined sidewall; 132- Limiting post; 14- Locking pin; 141- Second inclined surface; 142- Second flat surface; 143- Spring piece; 15- Anti-theft component; 151- Handle body; 1511- Spring groove; 1512- Receiving groove; 1512a- Horizontal groove; 1512b- Vertical groove; 152- Lock; 1521- Lock body; 1522- Lock piece; 1522a- Main body; 1522b- Protrusion; 153- Force transmission block; 1531- Lug; 154- Reset component. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. It should be noted that, unless otherwise specified, the various features in the embodiments of this application can be combined with each other, and the combined embodiments are still within the protection scope of this application.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0036] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] One aspect of the embodiments of this application refers to... Figure 1 and Figure 2 A trailer arm connecting pipe 10 is provided, comprising: a connecting pipe 11, an anti-theft component 15, a transmission component 12, a pin body 13, and a locking pin 14 disposed on the connecting pipe 11. The connecting pipe 11 is used to insert into the connecting port of the trailer arm. The pin body 13 is used to insert into the pin hole on the side wall of the connecting port after extending out of the connecting pipe 11. The locking pin 14 is used to abut against the inner wall of the connecting port after extending out of the connecting pipe 11. The anti-theft component 15 has 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 driven to connect with the transmission component 12. The pin body 13 and the locking pin 14 cooperate with the transmission component 12 respectively to extend or retract into the connecting pipe 11 together under the drive of the anti-theft component 15. When the anti-theft component 15 is in the second working position, the anti-theft component 15 is disengaged from the transmission component 12, and the anti-theft component 15 cannot drive the pin body 13 and the locking pin 14 to move.

[0039] The connecting tube 11 is inserted into the connecting port of the trailer bar. The shape of the outer wall of the connecting tube 11 matches the shape of the inner wall of the connecting port of the trailer bar. Generally, the connecting tube 11 is a square tube, and the connecting port of the trailer bar is a square opening. The anti-theft component 15 is rotatably mounted on the connecting tube 11, preferably on the outer wall of the connecting tube 11, for easy user operation. The transmission component 12, the pin body 13, and the locking pin 14 are at least partially disposed inside the connecting tube 11. The pin body 13 and the locking pin 14 respectively cooperate with the transmission component 12 and can extend or retract into the connecting tube 11 under the drive of the transmission component 12.

[0040] The transmission assembly 12 can also be selectively connected to the anti-theft assembly 15. Specifically, the anti-theft assembly 15 has a first working position and a second working position during its rotation relative to the connecting pipe 11. When the anti-theft assembly 15 rotates to the first working position, it is connected to the transmission assembly 12. Rotating the anti-theft assembly 15 will drive the transmission assembly 12 to move, thereby driving the pin body 13 and the locking pin 14 to extend and retract. The side wall of the connecting pipe 11 is provided with through holes corresponding to the positions of the pin body 13 and the locking pin 14, respectively. The side wall of the trailer bar connection port is provided with a pin hole corresponding to the position of the pin body 13. Driven by the transmission assembly 12, the pin body 13 extends out of the connecting pipe 11 through its corresponding through hole and then extends into the pin hole of the trailer bar connection port to achieve a reliable connection between the connecting pipe 11 and the trailer bar connection port. Driven by the transmission assembly 12, the locking pin 14 extends out of the connecting pipe 11 through its corresponding through hole and then abuts against the inner wall of the trailer bar connection port, thereby eliminating the gap between the connecting pipe 11 and the trailer bar connection port, thus reducing vibration and abnormal noise during driving and improving driving safety. When the anti-theft component 15 rotates to the second working position, the anti-theft component 15 is disengaged from the transmission assembly 12. Even if the anti-theft component 15 is rotated, it cannot drive the transmission assembly 12, thus keeping the pin body 13 and the locking pin 14 in their current positions. This prevents the anti-theft component 15 from being affected by external factors such as bumps or by human error during driving, causing the pin body 13 or the locking pin 14 to retract into the connecting pipe 11, which would lead to the failure of the connection between the connecting pipe 11 and the trailer bar or driving vibration and abnormal noise.

[0041] It should be noted that, in this embodiment, the structure of the anti-theft component 15 is not limited, as long as it can selectively connect to the transmission component 12 and drive the transmission component 12 to operate. Similarly, the structure of the transmission component 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 extend out of the connecting tube 11 together. Furthermore, the latch body 13 and the locking pin 14 extending out of the connecting tube 11 together does not mean that the latch body 13 and the locking pin 14 must extend out of the connecting tube 11 at the same time; they can also extend out of the connecting tube 11 one after the other. The driving method of the anti-theft component 15 can be manual or it can be driven by other driving components; this embodiment also does not limit this.

[0042] The aforementioned trailer arm connecting pipe 10 has an anti-theft component 15, a transmission component 12, a pin 13 that cooperates with the transmission component 12, and a locking pin 14 on the connecting pipe 11. The pin 13 and the locking pin 14 are linked through the transmission component 12, which can be selectively driven to connect with the anti-theft component 15. When the transmission component 12 is driven to connect with the anti-theft component 15, rotating the anti-theft component 15 will cause the pin 13 and the locking pin 14 to move through the transmission component 12, so that the pin 13 and the locking pin 14 extend out of the connecting pipe 11. When the transmission component 12 is disengaged from the anti-theft component 15, the transmission component 12 cannot be operated from the outside, and the pin 13 and the locking pin 14 remain in the extended position. The aforementioned trailer arm connecting pipe 10 can prevent the pin body 13 from falling off, realize a reliable connection between the connecting pipe 11 and the trailer arm connection port, and also eliminate the gap between the connecting pipe 11 and the trailer arm connection port. It is simple and convenient to operate and solves the problem of the dispersion of functional parts in the traditional trailer arm connecting pipe 10.

[0043] Optionally, in one possible implementation of this application embodiment, please refer to... Figures 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. The handle body 151 is rotatably disposed on the connecting pipe 11 and can rotate clockwise or counterclockwise relative to the connecting pipe 11. The transmission component 12 includes a force transmission shaft 128, which is selectively driven connected to the handle body 151, thereby allowing the transmission component 12 to be selectively driven connected to the anti-theft component 15.

[0044] The side wall of the force transmission shaft 128 is provided with a force transmission groove 1281, which corresponds to the position of the force transmission block 153; the lock 152 is drivenly connected to the force transmission block 153, and can drive the force transmission block 153 to slide within the handle body 151. Figure 5 and Figure 6As shown, when the lock 152 rotates to the first working position in the first direction, the force transmission block 153 extends into the force transmission groove 1281. The force transmission block 153 simultaneously cooperates with the handle body 151 and the force transmission shaft 128. The handle body 151 and the force transmission shaft 128 are connected through the force transmission block 153, thereby enabling the handle body 151 and the force transmission shaft 128 to rotate synchronously. At this time, rotating the handle body 151 can drive the force transmission shaft 128 to rotate, thereby causing the transmission assembly 12 to drive the pin body 13 and the locking pin 14 to move. Figure 3 and Figure 4 As shown, when the lock 152 rotates to the second working position in the second direction, the force transmission block 153 retracts into the handle body 151 and separates from the force transmission shaft 128. At this time, the handle body 151 is disconnected from the force transmission shaft 128, and the handle body 151 can only rotate freely and cannot drive the force transmission shaft 128 to rotate. The transmission component 12 will not drive the pin body 13 and the locking pin 14 to move.

[0045] It is understandable that the second direction is opposite to the first direction, with one of the first and second directions being clockwise and the other being counterclockwise.

[0046] Optionally, in one possible implementation of this application embodiment, the lock 152 includes a lock body 1521 and a lock plate 1522 fixedly connected to the lock body 1521; the lock body 1521 is rotatably mounted on the handle body 151 and can reciprocate relative to the handle body 151. The lock plate 1522 has a main body portion 1522a and a protrusion 1522b disposed on the edge of the main body portion 1522a, the protrusion 1522b being closer to the force transmission block 153 than the main body portion 1522a. The anti-theft component 15 also includes a reset member 154 slidably mounted on the handle body 151, one end of the reset member 154 abutting against the handle body 151, and the opposite end abutting against the side of the force transmission block 153 away from the force transmission shaft 128.

[0047] like Figure 3 and Figure 4 As shown, when the lock body 1521 drives the lock plate 1522 to rotate in the second direction until the protrusion 1522b corresponds to the position of the force transmission block 153, the protrusion 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, causing the handle body 151 to be disconnected from the force transmission shaft 128, and the handle body 151 to spin freely, unable to drive the force transmission shaft 128 to rotate. At this time, the reset member 154 is compressed and is in a deformed energy storage state. Figure 5 and Figure 6As shown, when the lock body 1521 drives the lock plate 1522 to rotate in the first direction until the main body 1522a corresponds to the position of the force transmission block 153, since the main body 1522a is farther away from the force transmission block 153 than the protrusion 1522b, the side of the force transmission block 153 away from the reset member 154 is left empty. At this time, the reset member 154 restores its energy release, driving the force transmission block 153 to extend out of the handle body 151 and into the force transmission groove 1281, thereby realizing the connection between the handle body 151 and the force transmission shaft 128.

[0048] For example, the reset member 154 is a spring, and the handle body 151 is provided with a spring groove 1511. The spring is disposed in the spring groove 1511, one end of the spring abuts against the force transmission block 153, and the other end abuts against the bottom of the spring groove 1511.

[0049] For example, the main body 1522a of the locking plate 1522 is square, and the protrusion 1522b is semi-circular. The straight edge of the protrusion 1522b is equal in length to and coincides with the straight edge of the main body 1522a. The arc-shaped edge of the protrusion 1522b is used to abut against the force transmission block 153, thereby driving the force transmission block 153 to retract into the handle body 151.

[0050] Optionally, in one possible implementation of this application embodiment, the handle body 151 is provided with a receiving groove 1512 for accommodating the force transmission block 153, and the force transmission block 153 is provided with lugs 1531 on opposite sides. When the anti-theft component 15 is in the first working position, the lugs 1531 abut against the inner wall of the receiving groove 1512 to prevent the force transmission block 153 from disengaging from the receiving groove 1512.

[0051] Both the receiving groove 1512 and the force transmission block 153 have T-shaped longitudinal sections. The receiving groove 1512 includes a horizontal groove 1512a and a vertical groove 1512b. The upper part of the force transmission block 153 and the lug 1531 slide up and down in the horizontal groove 1512a, and the lower part of the force transmission block 153 slides up and down in the vertical groove 1512b. Figure 6 As shown, when the lock 152 rotates to the first working position in the first direction, the lower part of the force transmission block 153 extends into the force transmission groove 1281, and the lug 1531 faces the bottom of the transverse groove 1512a on the side of the force transmission groove 1281. This can prevent the force transmission block 153 from falling out of the receiving groove 1512 and reduce the shaking of the force transmission block 153.

[0052] Optionally, in one possible implementation of this application embodiment, please refer again to... Figure 2The transmission assembly 12 also includes a first bevel gear 125 coaxially connected to the force transmission shaft 128, a second bevel gear 126 cooperating with the first bevel gear 125, a lead screw 121 coaxially connected to the second bevel gear 126, and a locking slider 122 cooperating with the lead screw 121. The locking slider 122 cooperates with the pin body 13 and the locking pin 14 respectively.

[0053] The axial dimension of the connecting pipe 11 is larger than its radial dimension; therefore, the transmission assembly 12 primarily utilizes the axial space of the connecting pipe 11. The lead screw 121 is positioned axially along the connecting pipe 11, and the force transmission shaft 128 is positioned radially along the connecting pipe 11. The first bevel gear 125 and the second bevel gear 126 engage to convert the radial rotational motion of the force transmission shaft 128 around the connecting pipe 11 into the axial rotational motion of the lead screw 121 around the connecting pipe 11. A locking slider 122, threadedly engaged with the lead screw 121, is fitted onto the lead screw 121. When the lead screw 121 is driven to rotate, it drives the locking slider 122 to reciprocate along the axial direction of the connecting pipe 11. The locking slider 122 engages with the pin body 13 and the locking pin 14, and through this engagement structure, its own linear motion along the axial direction of the connecting pipe 11 is converted into the linear motion of the pin body 13 and the locking pin 14 along the radial direction of the connecting pipe 11. The above structure makes reasonable use of the space inside the connecting tube 11, and transforms the rotation of the handle body 151 into the extension and retraction of the pin body 13 and the locking pin 14 step by step.

[0054] The force transmission shaft 128 and the first bevel gear 125, and the lead screw 121 and the second bevel gear 126 can be directly connected, or indirectly connected through other structures. For example, the force transmission shaft 128 and the first bevel gear 125 are connected by a locking shaft 124, one end of which is coaxially connected to the force transmission shaft 128, and the first bevel gear 125 is sleeved on the other end of the locking shaft 124.

[0055] Optionally, in one possible implementation of this application embodiment, please refer to... Figure 7 The transmission assembly 12 includes a lead screw 121 and a locking slider 122 that cooperates with the lead screw 121. The axis of the lead screw 121 is parallel to that of the connecting pipe 11. The locking slider 122 is provided with a linkage structure, which cooperates with the pin body 13 and the locking pin 14 respectively.

[0056] A lead screw 121 is installed inside the connecting pipe 11, and a locking slider 122 with a threaded engagement is fitted onto the lead screw 121. When the lead screw 121 is driven to rotate, it drives the locking slider 122 to reciprocate along the axial direction of the connecting pipe 11. Since the trailer bumper connection port is located on the radial side of the connecting pipe 11, a linkage structure is also provided on the locking slider 122. Through the linkage structure, it engages with the pin body 13 and the locking pin 14 respectively, thereby converting the axial movement of the locking slider 122 in the connecting pipe 11 into the radial movement of the pin body 13 and the locking pin 14 in the connecting pipe 11.

[0057] In this embodiment, the linkage structure is not limited. The linkage structure can be a part of the locking slider 122, that is, the structural features of a local area of ​​the locking slider 122, or it can be a separate component set on the locking slider 122. As long as the linkage structure can convert the axial movement of the locking slider 122 in the connecting pipe 11 into the radial movement of the pin body 13 and the locking pin 14 in the connecting pipe 11, it is acceptable.

[0058] For example, the pin body 13 includes two pin bodies 13, which are symmetrically arranged on both sides of the lead screw 121. Under the drive of the locking slider 122, the two pin bodies 13 extend simultaneously from the connecting pipe 11 and are inserted into the pin holes on the side wall of the connecting port. Providing two pin bodies 13 can further improve the reliability of the connection between the connecting pipe 11 and the trailer boom connecting port.

[0059] Optionally, in one possible implementation of this application embodiment, please refer to... Figures 7 to 10 The linkage structure includes a guide wire 123, a guide groove 131 on the pin body 13, the side wall of the guide groove 131 includes a straight side wall 1311 and an inclined side wall 1312 connected to the straight side wall 1311, and a limiting post 132 is also provided in the guide groove 131. The guide wire 123 is clamped between the side wall of the guide groove 131 and the limiting post 132. The guide wire 123 includes an inclined section 1231, a first straight section 1232 and a second straight section 1233 respectively connected to opposite ends of the inclined section 1231. The inclined section 1231 is parallel to the inclined side wall 1312. When the first straight section 1232 is in contact with the straight side wall 1311, the pin body 13 retracts into the connecting tube 11. When the second straight section 1233 is in contact with the straight side wall 1311, the pin body 13 extends out of the connecting tube 11.

[0060] In this embodiment, the linkage structure is a separate guide wire 123 mounted on the locking slider 122. The locking slider 122 drives the pin body 13 to move radially along the connecting pipe 11 via the guide wire 123. At this time, the locking slider 122 can directly engage with the locking pin 14, or it can engage with the locking pin 14 via another separate component. The guide wire 123 creates a certain distance between the pin body 13 and the locking pin 14, thereby avoiding mutual interference between them. Figure 8 As shown, when the first straight section 1232 of the guide wire 123 is in contact with the straight sidewall 1311 of the guide groove 131, the pin body 13 retracts into the connecting tube 11. The locking slider 122 drives the guide wire 123 to move, as shown. Figure 9As shown, when the first straight section 1232 of the guide wire 123 separates from the straight sidewall 1311 of the guide groove 131, and simultaneously the inclined section 1231 of the guide wire 123 engages with the inclined sidewall 1312 of the guide groove 131, the pin body 13 gradually extends out of the connecting tube 11. The locking slider 122 continues to drive the guide wire 123 to move, as... Figure 10 As shown, when the inclined section 1231 of the guide wire 123 moves to separate from the inclined sidewall 1312 of the guide groove 131, the second straight section 1233 of the guide wire 123 fits against the straight sidewall 1311 of the guide groove 131, and the pin body 13 remains in the extended position.

[0061] When the lead screw 121 reverses direction, and the locking slider 122 drives the guide wire 123 to move in the opposite direction, the pin 13 changes from an extended state to a retracted state. This process is the same as the principle of the pin 13 changing from a retracted state to an extended state, and will not be described in detail here.

[0062] The structure of the aforementioned guide groove 131 and guide wire 123 can convert the radial movement of the locking slider 122 in the connecting pipe 11 into the axial movement of the pin body 13 in the connecting pipe 11. Furthermore, the extension or retraction of the pin body 13 can be controlled by the forward and reverse rotation of the lead screw 121. The structure is simple and easy to control.

[0063] Optionally, in one possible implementation of this application embodiment, the transmission assembly 12 further includes a pin seat 127, which is fixed inside the connecting pipe 11, and the pin body 13 is slidably disposed on the side wall of the pin seat 127, with the pin seat 127 guiding the movement of the pin body 13.

[0064] Optionally, in one possible implementation of this application embodiment, please refer to... Figure 11 and Figure 12 The linkage structure includes a first inclined surface 1221 on the locking slider 122, and a second inclined surface 141 on the locking pin 14 that cooperates with the first inclined surface 1221. The locking slider 122 pushes the locking pin 14 out through the first inclined surface 1221. The locking pin 14 is provided with a spring piece 143, which abuts against the inner wall of the connecting tube 11. The spring piece 143 is used to retract the locking pin 14 into the connecting tube 11.

[0065] In this embodiment, the linkage structure is a structural feature of a local area of ​​the locking slider 122. In this case, the locking slider 122 and the locking pin 14 directly engage via inclined surfaces. The first inclined surface 1221 and the second inclined surface 141 can fit together, and the first inclined surface 1221 is set at an acute angle to the axis of the lead screw 121. When the first inclined surface 1221 and the second inclined surface 141 are in contact, the locking slider 122 can move axially along the connecting pipe 11 to push the locking pin 14 radially out along the connecting pipe 11.

[0066] It is understandable that when the locking slider 122 moves in a certain direction, the inclination direction of the first inclined surface 1221 on the locking slider 122 and the inclination direction of the inclined section 1231 on the guide wire 123 should ensure that the locking pin 14 and the pin body 13 can be driven to extend out of the connecting tube 11 together.

[0067] like Figure 11 As shown, when the locking pin 14 is in the retracted state, the spring piece 143 is in its natural state, and the end of the spring piece 143 abuts against the inner wall of the connecting tube 11. Figure 12 As shown, when the locking pin 14 is driven by the locking slider 122 to gradually extend out of the connecting tube 11, the spring piece 143 is deformed under pressure and stores energy. At this time, the locking slider 122 applies pressure to the locking pin 14, keeping the locking pin 14 in the extended state. When the lead screw 121 reverses, the locking slider 122 moves in the opposite direction, releasing the pressure applied to the locking pin 14. The spring piece 143 then returns to its original position, driving the locking pin 14 to retract into the connecting tube 11 to achieve a reset.

[0068] For example, there are two spring pieces 143, which are symmetrically arranged on both sides of the locking pin 14. The two spring pieces 143 simultaneously abut against the inner wall of the connecting tube 11, thereby making the force on the locking pin 14 more balanced and preventing the locking pin 14 from tilting due to uneven force during the retraction process.

[0069] Optionally, in one possible implementation of this application embodiment, the linkage structure includes a first inclined surface 1221 disposed on the locking slider 122 and a first plane 1222 connected to the end of the first inclined surface 1221, and the locking pin 14 is provided with a second inclined surface 141 that cooperates with the first inclined surface 1221 and a second plane 142 that cooperates with the first plane 1222.

[0070] like Figure 8 and Figure 13 As shown, when the first straight section 1232 of the guide wire 123 is in contact with the straight sidewall 1311 of the guide groove 131, the pin body 13 retracts into the connecting tube 11, and the second plane 142 of the locking pin 14 engages with the first plane 1222 of the locking slider 122, and the locking pin 14 also retracts into the connecting tube 11. Please refer to the reference. Figure 9 The locking slider 122 drives the guide wire 123 to move, which in turn drives the pin body 13 to gradually extend. The second plane 142 of the locking pin 14 moves relative to the first plane 1222 of the locking slider 122, but still maintains a mating relationship. Please refer to the reference. Figure 11When the intersection of the inclined section 1231 and the second straight section 1233 of the guide wire 123 coincides with the connection point of the straight sidewall 1311 and the inclined sidewall 1312 of the guide groove 131, the intersection of the second plane 142 and the second inclined surface 141 of the locking pin 14 coincides with the intersection of the first plane 1222 and the first inclined surface 1221 of the locking slider 122. At this time, the pin body 13 extends out of the connecting tube 11, and the locking pin 14 is still in the retracted state, but is about to extend out of the connecting tube 11. The locking slider 122 continues to drive the guide wire 123 to move, as... Figure 10 and Figure 12 As shown, when the second straight section 1233 of the guide wire 123 is in contact with the straight sidewall 1311 of the guide groove 131, the pin body 13 remains in the extended position. At the same time, the second inclined surface 141 of the locking pin 14 cooperates with the first inclined surface 1221 of the locking slider 122, and the locking pin 14 extends out of the connecting tube 11.

[0071] In this embodiment, the trailer arm connecting pipe 10 can sequentially achieve three states during the movement of the locking slider 122 in a certain direction: State 1 is that both the pin 13 and the locking pin 14 are in the retracted state; State 2 is that the pin 13 is in the extended state and the locking pin 14 is in the retracted state; State 3 is that both the pin 13 and the locking pin 14 are in the extended state. That is to say, although the pin 13 and the locking pin 14 have a linkage relationship, they do not extend from the connecting pipe 11 at the same time. The function of the trailer arm connecting pipe 10 is realized in two steps. The first step is to extend the pin 13 to achieve a reliable connection between the connecting pipe 11 and the trailer arm connection port. The second step is to extend the locking pin 14 to eliminate the gap between the connecting pipe 11 and the trailer arm connection port.

[0072] This embodiment also provides a vehicle including the trailer arm connecting pipe 10 as described above.

[0073] The vehicle includes the same structure and beneficial effects as the trailer arm connecting pipe 10 in the foregoing embodiments. The structure and beneficial effects of the trailer arm connecting pipe 10 have been described in detail in the foregoing embodiments and will not be repeated here.

[0074] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A trailer arm connecting pipe, characterized in that, include: The connecting pipe includes an anti-theft component, a transmission component, a pin body, and a locking pin. The connecting pipe is used to be inserted into the connecting port of the trailer bar. The pin body is used to be inserted into the pin hole on the side wall of the connecting port after extending out of the connecting pipe. The locking pin is used to abut against the inner wall of the connecting port after extending out of the connecting pipe. The anti-theft component has a first working position and a second working position relative to the connecting tube. When the anti-theft component is in the first working position, it is driven to connect with the transmission component. The pin and the locking pin cooperate with the transmission component to extend or retract into the connecting tube together under the drive of the anti-theft component. When the anti-theft component is in the second working position, it is disengaged from the transmission component, and it cannot drive the pin and the locking pin to move.

2. The trailer arm connecting pipe as described in claim 1, characterized in that, The anti-theft component includes a handle body, a lock rotatably mounted on the handle body, and a force transmission block slidably mounted on the handle body. The transmission component includes a force transmission shaft, and the side wall of the force transmission shaft is provided with a force transmission groove, which corresponds to the position of the force transmission block. The lock is driven to the force transmission block. When the lock rotates to the first working position along the first direction, the force transmission block extends into the force transmission groove. The force transmission block simultaneously cooperates with the handle body and the force transmission shaft to make the handle body and the force transmission shaft rotate synchronously. When the lock rotates to the second working position along the second direction, the force transmission block retracts into the handle body and separates from the force transmission shaft. The handle body is decoupled from the force transmission shaft. The second direction is opposite to the first direction.

3. The trailer arm connecting pipe as described in claim 2, characterized in that, The lock includes a lock body and a lock plate fixedly connected to the lock body. The lock plate has a main body and a protrusion on the edge of the main body. The anti-theft component also includes a reset member slidably disposed on the handle body. One end of the reset member abuts against the handle body, and the other end abuts against the side of the force transmission block away from the force transmission shaft. When the lock body rotates along the second direction, the protrusion of the lock plate abuts against the force transmission block, the force transmission block retracts into the handle body, and the reset member is in a deformable energy storage state; when the lock body rotates along the first direction, the main body of the lock plate faces the force transmission block and is spaced apart from the force transmission block, and the reset member drives the force transmission block to extend into the force transmission groove.

4. The trailer arm connecting pipe as described in claim 2, characterized in that, The handle body is provided with a receiving groove for accommodating the force transmission block. The force transmission block has lugs on opposite sides. When the anti-theft component is in the first working position, the lugs abut against the inner wall of the receiving groove to prevent the force transmission block from detaching from the receiving groove.

5. The trailer arm connecting pipe as described in claim 2, characterized in that, The transmission assembly further includes a first bevel gear coaxially connected to the force transmission shaft, a second bevel gear cooperating with the first bevel gear, a lead screw coaxially connected to the second bevel gear, and a locking slider cooperating with the lead screw. The locking slider cooperates with the pin body and the locking pin, respectively.

6. The trailer arm connecting pipe as described in claim 1, characterized in that, The transmission assembly includes a lead screw and a locking slider that cooperates with the lead screw. The axis of the lead screw is parallel to that of the connecting pipe. The locking slider is provided with a linkage structure, which cooperates with the pin body and the locking pin respectively.

7. The trailer arm connecting pipe as described in claim 6, characterized in that, The linkage structure includes a guide wire, and the pin body is provided with a guide groove. The sidewall of the guide groove includes a straight sidewall and an inclined sidewall connected to the straight sidewall. A limiting post is also provided in the guide groove. The guide wire is clamped between the sidewall of the guide groove and the limiting post. The guide wire includes an inclined section, a first straight section and a second straight section respectively connected to opposite ends of the inclined section. The inclined section is parallel to the inclined sidewall. When the first straight section is in contact with the straight sidewall, the pin retracts into the connecting tube; when the second straight section is in contact with the straight sidewall, the pin extends out of the connecting tube.

8. The trailer arm connecting pipe as described in claim 6, characterized in that, The linkage structure includes a first inclined surface disposed on the locking slider, a second inclined surface disposed on the locking pin that cooperates with the first inclined surface, the locking slider pushing the locking pin out through the first inclined surface, a spring piece disposed on the locking pin, the spring piece abutting against the inner wall of the connecting tube, and the spring piece being used to retract the locking pin into the connecting tube.

9. The trailer arm connecting pipe as described in claim 7, characterized in that, The linkage structure includes a first inclined surface disposed on the locking slider and a first flat surface connected to the end of the first inclined surface; the locking pin is provided with a second inclined surface that cooperates with the first inclined surface and a second flat surface that cooperates with the first flat surface. When the first straight section is in contact with the straight sidewall, the second plane engages with the first plane, and the locking pin retracts into the connecting tube; when the second straight section is in contact with the straight sidewall, the second inclined surface engages with the first inclined surface, and the locking pin extends out of the connecting tube.

10. A vehicle, characterized in that, Includes the trailer arm connecting pipe as described in any one of claims 1 to 9.

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