Height adjusting device and vehicle

Abstract

The utility model discloses a height adjusting device and a vehicle, the height adjusting device is used for adjusting the height of a top fairing of the vehicle, and the height adjusting device comprises a first support suitable for being connected with the top fairing, and the first support is provided with a limiting part; the second support is suitable for being connected with a cab; the pawl support is rotatably connected with the second support, the pawl support is provided with a stop part, the stop part is clamped to the limiting part, and the stop part is suitable for adjusting the position relative to the limiting part when the pawl support rotates relative to the second support. According to the height adjusting device, through the adjusting effect of the pawl support, the height of the first support relative to the second support can be adjusted, then the height of the top flow guide cover is adjusted, the structure of the adjusting device is stable and reliable, and the adjusting mode of the adjusting device is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle manufacturing, in particular to a height adjusting device and a vehicle with the height adjusting device. Background Art

[0002] The top fairing is a common device on vehicles to reduce wind resistance. In order to match cargo boxes of different heights and achieve the best drag reduction effect, some models are equipped with a top fairing height adjustment device. In the prior art, the height is adjusted by multi-hole bolts and screws. The bolt adjustment requires repeated disassembly and assembly, the adjustment is unchanged and easy to loosen, the operation is very difficult, and it often requires the cooperation of multiple people. The screw adjustment has a complex structure, heavy weight, high cost, and is prone to system failure due to dust, ice and snow. There is room for improvement. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a height adjustment device, which has a stable and reliable structure, a simple and convenient adjustment method, and a simple structure, light weight and low cost.

[0004] According to the height adjustment device of the embodiment of the utility model, the height adjustment device is used to adjust the height of the top air duct of the vehicle, and includes: a first bracket, the first bracket is suitable for being connected to the top air duct, and the first bracket is provided with a limiting portion; a second bracket, the second bracket is suitable for being connected to the cab; a pawl bracket, the pawl bracket is rotatably connected to the second bracket, and the pawl bracket is provided with a stop portion, the stop portion is clamped to the limit portion, and the stop portion is suitable for adjusting the position relative to the limit portion when the pawl bracket rotates relative to the second bracket.

[0005] According to the height adjustment device of the embodiment of the utility model, the height of the first bracket relative to the second bracket can be adjusted by setting the adjustment function of the pawl bracket, thereby adjusting the height of the top air duct, and the structure of the adjustment device is stable and reliable, the adjustment method is simple and convenient, and the structure is simple, light weight and low cost.

[0006] According to some embodiments of the utility model, the height adjustment device also includes an elastic member, which is installed between the second bracket and the pawl bracket. There are multiple limiting parts, and the multiple limiting parts are distributed in the up and down directions. The stop part switches to another limiting part when the pawl bracket rotates along the first direction. The elastic member is used to apply an elastic force to the pawl bracket to rotate along the second direction, and the first direction is opposite to the second direction.

[0007] According to the height adjustment device of some embodiments of the utility model, the pawl bracket is rotatably connected to the second bracket via a rotating shaft, and the elastic member is constructed as a torsion spring. The torsion spring is sleeved outside the rotating shaft and elastically presses against the pawl bracket and the second bracket respectively.

[0008] According to some embodiments of the height adjustment device of the present invention, the height adjustment device further includes a locking portion, the locking portion is provided through the pawl bracket and the second bracket, the elastic member elastically presses against the locking portion, the locking portion is movable relative to the pawl bracket and the second bracket, and the locking portion has an unlocking position and a locking position;

[0009] Wherein, when the locking portion is located at the locking position, the pawl bracket is locked relative to the second bracket, and when the locking portion is located at the unlocking position, the pawl bracket is rotatable relative to the second bracket.

[0010] According to the height adjustment device of some embodiments of the utility model, the locking portion is configured as a locking shaft, the second bracket is provided with a connecting rotation groove and a locking groove, the rotation groove is configured as an arc groove, the arc groove extends circumferentially along the rotation axis of the pawl bracket, the locking groove extends vertically, and the locking shaft is located in the rotation groove when in the unlocking position and in the locking groove when in the locking position.

[0011] According to the height adjustment device of some embodiments of the utility model, the elastic member is provided with a first recessed portion and a second recessed portion, and a stop protrusion is formed at the connection between the first recessed portion and the second recessed portion, the locking portion is pressed against the first recessed portion when in the unlocking position and against the second recessed portion when in the locking position, and is suitable for crossing the stop protrusion to switch from one of the first recessed portion and the second recessed portion to the other.

[0012] According to the height adjustment device of some embodiments of the present utility model, the limiting portion is configured as a limiting slot, the stopping portion is configured as a stopping column, and the stopping column is suitable for stopping in the limiting slot.

[0013] According to the height adjustment device of some embodiments of the utility model, the limit slot is provided with a guide surface and a limit surface, the limit surface is connected to the upper end of the guide surface, and the stop column is suitable for being introduced into the limit slot along the guide surface and suitable for stopping at the limit surface.

[0014] According to the height adjustment device of some embodiments of the utility model, the first bracket is configured so that when the first bracket moves upward relative to the second bracket, the guide surface is suitable for pushing the stop column to drive the pawl bracket to rotate and make the stop column switch to a limit slot located below the current limit slot.

[0015] The utility model also provides a vehicle.

[0016] The vehicle according to an embodiment of the utility model comprises a cab and a height adjustment device according to any one of the above-mentioned embodiments, the top of the cab is provided with the top fairing, and by arranging the height adjustment device inside the top fairing, the height of the top fairing can be adjusted to match the height of the vehicle box, so as to more effectively reduce driving resistance and reduce energy consumption.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is an axonometric diagram of a height adjustment device according to an embodiment of the utility model;

[0020] Figure 2 is an exploded view of a height adjustment device according to an embodiment of the utility model;

[0021] Figure 3 is a cross-sectional view of a height adjustment device according to an embodiment of the utility model;

[0022] Figure 4 is an axonometric diagram of a height adjustment device according to another embodiment of the utility model;

[0023] Figure 5 is an exploded view of a height adjustment device according to another embodiment of the utility model;

[0024] Figure 6 is a cross-sectional view of a height adjustment device according to another embodiment of the utility model;

[0025] Figure 7 is a partial view of a locking portion of a height adjustment device in a locking position according to another embodiment of the utility model;

[0026] Figure 8 It is a partial view of the locking portion of the height adjustment device in the unlocking position according to another embodiment of the utility model.

[0027] Reference numerals:

[0028] Height adjustment device 100,

[0029] The first bracket 1, the limiting portion 11, the guide surface 111, the limiting surface 112, the bracket side plate 12, the second bracket 2, the rotating groove 21, the locking groove 22, the pawl bracket 3, the stopping portion 31, the elastic member 4, the first recessed portion 41, the second recessed portion 42, the stopping protrusion 43, the rotating shaft 5, the connecting bushing 51, and the locking portion 6. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Unless otherwise specified, the front-to-back direction in the present application is the longitudinal direction of the vehicle, that is, the X direction; the left-right direction is the lateral direction of the vehicle, that is, the Y direction; and the up-down direction is the vertical direction of the vehicle, that is, the Z direction.

[0034] Reference below Figure 1-Figure 8A height adjustment device 100 according to an embodiment of the utility model is described. A pawl bracket 3 is arranged between the first bracket 1 and the second bracket 2. The pawl bracket 3 can rotate relative to the second bracket 2, and the pawl bracket 3 is provided with a stop portion 31. When the first bracket 1 is moved up and down relative to the second bracket 2, the stop portion 31 is pressed against the limiting portion 11 of the first bracket 1, thereby realizing the height adjustment between the first bracket 1 and the second bracket 2. The adjustment method is simple and effortless.

[0035] like Figure 1-Figure 8 As shown, according to an embodiment of the utility model, a height adjustment device 100 is used to adjust the height of the top air duct of the vehicle to adapt to the height of the vehicle compartment of different vehicles, and includes: a first bracket 1, a second bracket 2 and a pawl bracket 3.

[0036] The first bracket 1 is suitable for being connected to the top fairing, such as the first bracket 1 can be detachably connected to the top fairing, and can be connected by bolts and other connecting parts, the connection is firm, reliable, and easy to operate, wherein the first bracket 1 is provided with a limiting portion 11, and the limiting portion 11 can realize the limiting fixation of the first bracket 1. The second bracket 2 is suitable for being connected to the cab, such as the second bracket 2 can be detachably connected to the cab, and can be connected by bolts and other connecting parts, the connection is firm, reliable, and easy to operate.

[0037] The pawl bracket 3 is rotatably connected to the second bracket 2, that is, the pawl bracket 3 is connected to the second bracket 2, and the pawl bracket 3 can rotate relative to the second bracket 2, and the pawl bracket 3 is provided with a stop portion 31, and the stop portion 31 can be fixedly connected to the pawl bracket 3, and the stop portion 31 is clamped to the limiting portion 11. In this way, the pawl bracket 3 and the first bracket 1 can be clamped and fixed by clamping the stop portion 31 and the limiting portion 11, so that the second bracket 2 and the first bracket 1 can be relatively fixed. The clamping and fixing method is stable and reliable, and the influence of vehicle vibration is reduced.

[0038] The stop portion 31 is suitable for adjusting its position relative to the limiting portion 11 when the pawl bracket 3 rotates relative to the second bracket 2. That is to say, when the pawl bracket 3 rotates relative to the second bracket 2, the stop portion 31 of the pawl bracket 3 can adjust its relative position with the limiting portion 11 to achieve limiting stops between the stop portion 31 and the limiting portion 11 at different positions.

[0039] Among them, in this embodiment, the second bracket 2 can be a fixing part, and the pawl bracket 3 is an adjusting part. The distance between the first bracket 1 and the second bracket 2 can be adjusted by adjusting the pawl bracket 3. When the distance between the first bracket 1 and the second bracket 2 needs to be adjusted, first press the pawl bracket 3 to rotate relative to the second bracket 2 away from the limiting part 11 on the first bracket 1, and then adjust the first bracket 1 to move towards or away from the second bracket 2. When the top air duct is adjusted to the desired position with the first bracket 1, the pawl bracket 3 rotates in the opposite direction relative to the second bracket 2, and the position of the stop part 31 relative to the limiting part 11 can be adjusted at the same time. After the stop part 31 is snapped into the limiting part 11, the height adjustment of the top air duct relative to the vehicle body can be realized to match the vehicle boxes of different heights.

[0040] Therefore, the first bracket 1, the second bracket 2 and the pawl bracket 3 can form a ratchet mechanism. By adjusting the height of the stop portion 31 relative to the limit portion 11, and the two are connected by snap-connection, the height adjustment of the pawl bracket 3 and the first bracket 1 can be achieved, so as to drive the top air duct to be adjusted up and down to match the car body of different heights, achieve better drag reduction effect, reduce vehicle fuel consumption, and have a simple structure and convenient adjustment.

[0041] According to the height adjustment device 100 of the embodiment of the utility model, by setting the adjustment function of the pawl bracket 3, the height of the first bracket 1 relative to the second bracket 2 can be adjusted, and then the height of the top air duct can be adjusted to achieve effective drag reduction, and the structure of the adjustment device is stable and reliable, the adjustment method is simple and convenient, and the structure is simple, light weight and low cost.

[0042] In some embodiments, the height adjustment device 100 also includes an elastic member 4, which is installed between the second bracket 2 and the pawl bracket 3. There are multiple limiting portions 11, and the multiple limiting portions 11 are spaced apart and distributed in the up and down directions. The stop portion 31 switches to another limiting portion 11 when the pawl bracket 3 rotates along the first direction. The elastic member 4 is used to apply an elastic force to the pawl bracket 3 to rotate along the second direction. The first direction is opposite to the second direction. That is to say, after the pawl bracket 3 rotates relative to the second bracket 2, it switches to be connected to a different limiting portion 11, and the elastic force is applied to the pawl bracket 3 by the elastic member 4, so that the pawl bracket 3 can rotate in the opposite direction relative to the second bracket 2, thereby realizing the resetting of the pawl bracket 3.

[0043] Specifically, the elastic member 4 is located between the second bracket 2 and the pawl bracket 3, and the elastic member 4 can be installed on the rotation axis of the pawl bracket 3 relative to the second bracket 2, wherein there are multiple limiting portions 11, and the multiple limiting portions 11 are evenly spaced and distributed in the up-down direction, so that the height of the first bracket 1 relative to the second bracket 2 can be adjusted by adjusting the stopper 31 to be connected with different limiting portions 11 distributed in the up-down direction. Therefore, the fixed position of the first bracket 1 relative to the second bracket 2 can be adjusted according to different limiting portions 11, thereby adjusting the height of the top air duct relative to the vehicle body.

[0044] The first direction is the direction of movement away from the first bracket 1, and the second direction is the direction of movement close to the first bracket 1. Figure 1 As shown, the first direction can be clockwise, and the second direction can be counterclockwise. When the pawl bracket 3 rotates clockwise, the pawl bracket 3 applies clockwise pressure to the elastic member 4, and when the pawl bracket 3 rotates counterclockwise, the elastic member 4 applies counterclockwise elastic force to the pawl bracket 3, so that the stop portion 31 is connected to another limit portion 11 as the pawl bracket 3 rotates, so as to realize the switching of the stop portion 31 between different limit portions 11, and relying on the pressing fit of the elastic member 4, the whole process runs stably and reliably.

[0045] In some embodiments, the pawl bracket 3 is rotatably connected to the second bracket 2 via a rotating shaft 5, and the elastic member 4 is constructed as a torsion spring, which is sleeved outside the rotating shaft 5 and elastically presses against the pawl bracket 3 and the second bracket 2 respectively. Thus, the elastic force of the elastic member 4 makes the fixation between the pawl bracket 3 and the second bracket 2 more reliable.

[0046] Specifically, the pawl bracket 3 is connected to the second bracket 2 via the rotating shaft 5, and the two rotate relative to each other with the rotating shaft 5 as the rotating axis. Figure 2 As shown, the pawl bracket 3 and the second bracket 2 are both provided with a through mounting hole, the rotating shaft 5 is passed through the mounting hole, the pawl bracket 3 is connected to the second bracket 2, and connecting bushings 51 are provided at both axial ends of the rotating shaft 5, the connecting bushings 51 are sleeved at both ends of the rotating shaft 5, and the elastic member 4 is sleeved outside the rotating shaft 5, and the elastic member 4 can be a torsion spring, such as Figure 3 As shown, one end of the torsion spring elastically presses against the pawl bracket 3 and the other end elastically presses against the second bracket 2, so that the elastic member 4 can be installed, and the pawl bracket 3 and the second bracket 2 can be relatively fixed through the elastic force of the elastic member 4, and the structure is simple and the cost is low.

[0047] It should be noted that the elastic member 4 may also be a tension spring, a compression spring or other elastic element that can satisfy the relative separation movement between the pawl bracket 3 and the second bracket 2 .

[0048] In some embodiments, the height adjustment device 100 also includes a locking portion 6, which is inserted through the pawl bracket 3 and the second bracket 2, and the elastic member 4 elastically presses against the locking portion 6. The locking portion 6 is movable relative to the pawl bracket 3 and the second bracket 2, and the locking portion 6 has an unlocking position and a locking position. That is, the locking portion 6 is movable relative to the pawl bracket 3 and the second bracket 2, and the locking portion 6 is unlocked and locked during the movement, that is, the pawl bracket 3 can be locked relative to the second bracket 2 through the locking portion 6, and the overall structure is more solid and reliable.

[0049] Specifically, Figure 4-Figure 6 As shown, the locking portion 6 is inserted into the pawl bracket 3 and the second bracket 2, and one end of the elastic member 4 is elastically pressed against the outside of the locking portion 6, which can elastically limit the locking portion 6. The upper end of the elastic member 4 is sleeved outside the rotating shaft 5, and the other end of the elastic member 4 is elastically pressed against the second bracket 2. The installation of the elastic member 4 can be achieved through the rotating shaft 5, the locking portion 6 and the second bracket 2, wherein the locking portion 6 moves in the up and down directions relative to the pawl bracket 3 and the second bracket 2, and when the locking portion 6 moves to the lower limit position, it is the locking position of the locking portion 6, and when the locking portion 6 moves to the upper limit position, it is the unlocking position of the locking portion 6, and in the locked position and the unlocked position, the locking portion 6 is elastically pressed against the elastic member 4 to ensure that the position of the locking portion 6 remains unchanged, thereby improving the stability of the overall structure.

[0050] Among them, when the locking part 6 is in the locking position, the pawl bracket 3 is relatively locked with the second bracket 2, and when the locking part 6 is in the unlocking position, the pawl bracket 3 is rotatable relative to the second bracket 2. That is to say, by switching the position of the locking part 6, the relative locking or relative movement of the pawl bracket 3 and the second bracket 2 is achieved.

[0051] Therefore, when it is necessary to adjust the distance between the first bracket 1 and the second bracket 2, the locking portion 6 is first moved to the unlocking position, and then the relative movement of the pawl bracket 3 and the second bracket 2 is adjusted. After the stop portion 31 is snapped into the corresponding limit portion 11, the height adjustment of the first bracket 1 and the second bracket 2 is achieved. After the adjustment is completed, when the locking portion 6 is moved to the locking position, the pawl bracket 3, the second bracket 2 and the first bracket 1 are relatively locked. In this way, problems such as structural loosening caused by vibrations such as bumps during driving of the vehicle can be avoided. This structure is safe, stable and has strong applicability.

[0052] In some embodiments, the locking portion 6 is configured as a locking shaft, which is parallel to and spaced from the rotation axis of the pawl bracket 3 and is located below the rotation axis, wherein the locking shaft may extend in a horizontal direction, and the rotation axis 5 between the pawl bracket 3 and the second bracket 2 may extend in a horizontal direction. Specifically, Figure 6As shown, the locking shaft is parallel and spaced apart from the rotation axis of the pawl bracket 3, that is, the locking shaft is vertically spaced apart from the rotating shaft 5, wherein the locking shaft is located below the rotating shaft 5, thereby, when the pawl bracket 3 rotates around the rotating shaft 5, the locking shaft rotates along the movement trajectory of the pawl bracket 3.

[0053] Among them, the second bracket 2 is provided with a connected rotation groove 21 and a locking groove 22. The rotation groove 21 is constructed as an arc groove, which extends circumferentially along the rotation axis of the pawl bracket 3, and the locking groove 22 extends vertically. The locking shaft is located in the rotation groove 21 when it is in the unlocking position and in the locking groove 22 when it is in the locking position.

[0054] Specifically, Figure 4 As shown, a rotating groove 21 and a locking groove 22 are provided in the lower area of ​​the second bracket 2, and the rotating groove 21 is connected with the locking groove 22, and the groove diameters of the rotating groove 21 and the locking groove 22 are the same and are both larger than the outer diameter of the locking shaft, wherein the rotating groove 21 is constructed as an arc groove, and the extension direction of the arc groove is the same as the movement trajectory of the pawl bracket 3, that is, the arc groove extends circumferentially along the rotating axis of the pawl bracket 3, and the locking groove 22 extends vertically, and the rotating groove 21 and the locking groove 22 are roughly perpendicular to each other at the connecting position, when the locking shaft is in the unlocking position, the locking shaft is located in the rotating groove 21, that is, the locking shaft is located at the connecting point between the rotating groove 21 and the locking groove 22, and when the locking shaft is in the locking position, the locking shaft is located in the locking groove 22, that is, the locking shaft is located at the bottom of the locking groove 22, and by moving the locking shaft along the up and down directions of the locking groove 22, the locking and unlocking of the locking shaft can be switched, and the adjustment method is simple, the locking effect is good, and the structure is simple and the cost is low.

[0055] In some embodiments, the elastic member 4 is provided with a first recessed portion 41 and a second recessed portion 42, and a stop protrusion 43 is formed at the connection between the first recessed portion 41 and the second recessed portion 42. The locking portion 6 is pressed against the first recessed portion 41 when in the unlocked position and against the second recessed portion 42 when in the locked position, and is suitable for crossing the stop protrusion 43 to switch from one of the first recessed portion 41 and the second recessed portion 42 to the other. That is, by switching the locking portion 6 from the first recessed portion 41 to the second recessed portion 42, the locking and unlocking of the locking shaft can be achieved, and the locking portion 6 is pressed and matched with the elastic member 4 at both positions, so that the switching of the locking portion 6 is more stable and easy to operate.

[0056] Specifically, Figure 6 As shown, the first recessed portion 41 and the second recessed portion 42 are spaced apart vertically and connected by a stop protrusion 43. The stop protrusion 43 is connected to the first recessed portion 41 and the second recessed portion 42 by an arc transition. The first recessed portion 41 can be located above the second recessed portion 42. Figure 7As shown, when the locking portion 6 is located at the bottom of the locking groove 22 and is pressed and matched with the second recessed portion 42, the elastic member 4 can be locked at one end of the pawl bracket 3, so that the pawl bracket 3 cannot rotate relative to the second bracket 2, ensuring that the pawl bracket 3, the second bracket 2 and the first bracket 1 are reliably installed. When the locking portion 6 is moved from bottom to top over the stopper 31 to the upper part of the locking groove 22 and is pressed and matched with the first recessed portion 41, as shown in FIG. Figure 8 As shown, the elastic member 4 at one end of the pawl bracket 3 can be unlocked, and the height of the first bracket 1 and the second bracket 2 can be adjusted.

[0057] Therefore, by setting the first recessed portion 41 and the second recessed portion 42, the first recessed portion 41 and the second recessed portion 42 are pressed against each other on the side of the locking shaft close to the second bracket 2, and the other side of the locking shaft away from the second bracket 2 is pressed against the locking groove 22, so that the pressing limit of the locking shaft is more secure, and the adjustment process is more convenient and reliable.

[0058] In some embodiments, the limiting portion 11 is constructed as a limiting slot, and the stopping portion 31 is constructed as a stopping column, which is suitable for stopping in the limiting slot. Thus, the pawl bracket 3 and the first bracket 1 can be fixed by the mutual pressure between the limiting portion 11 and the limiting slot.

[0059] Specifically, the first bracket 1 is formed with two bracket side panels 12, and the two bracket side panels 12 are both provided with a limiting portion 11, and the limiting portion 11 is constructed as a limiting slot, and the limiting slot extends from one side panel to the other side panel, and the limiting slot is arranged on the side of the first bracket 1 close to the pawl bracket 3, and the limiting slot is provided with an open mouth open toward the pawl bracket 3, and as shown in the figure, a plurality of limiting slots are distributed at intervals along the vertical direction, wherein the stop column is arranged in the upper side area of ​​the pawl bracket 3 and is connected by pressing with the limiting slot, and when installing or adjusting the height between the first bracket 1 and the second bracket 2, when the stop column of the pawl bracket 3 is stopped from the open mouth of the limiting slot into the limiting slot, the pawl bracket 3 is connected by a snap-on connection with the first bracket 1, and the snap-on connection method is simple and easy to operate.

[0060] The length of the stop column is greater than the distance between the two bracket side plates 12 , so that the stop column is stopped in the two limit slots along the circumferential direction, ensuring that the stop column and the limit slots are firmly and reliably connected.

[0061] In some embodiments, the limit slot is provided with a guide surface 111 and a limit surface 112, the limit surface 112 is connected to the upper end of the guide surface 111, and the stop column is suitable for being introduced into the limit slot along the guide surface 111 and suitable for stopping at the limit surface 112, so that the stop column can be limited from loosening from the limit slot through the limit surface 112 to limit the descent of the first bracket 1.

[0062] Specifically, the limiting slot is provided with a guide surface 111 and a limiting surface 112, and the limiting surface 112 and the guide surface 111 respectively limit and guide the stop column, wherein the limiting surface 112 is connected to the upper end of the guide surface 111, and the limiting surface 112 and the guide surface 111 are connected by an arc surface, and the limiting surface 112 can be set horizontally, and the guide surface 111 is set downwardly inclined. In this way, the stop column is introduced into the limiting slot from the guide surface 111 and pressed against the limiting surface 112, so that the connection between the stop column and the limiting slot can be realized, and the guiding effect of the guide surface 111 makes it more convenient to connect the pawl bracket 3 with the first bracket 1.

[0063] Furthermore, the limiting surface 112 can limit the upward movement of the stop column, thereby preventing the first bracket 1 and the pawl bracket 3 from loosening, causing the top air deflector to drop, increasing driving resistance, and affecting vehicle operation.

[0064] In some embodiments, the first bracket 1 is configured so that when it moves upward relative to the second bracket 2, the guide surface 111 is suitable for pushing the stop column to drive the pawl bracket 3 to rotate and switch the stop column to a limit slot located below the current limit slot. That is, by lifting the first bracket 1 upward, the guide surface 111 pushes the stop column to move downward, so that the stop column is disengaged from the limit slot. When the stop column is engaged in a limit slot below, the height of the first bracket 1 can be adjusted.

[0065] Therefore, when it is necessary to raise the height of the top air duct cover, it is only necessary to lift the top air duct cover upward, driving the first bracket 1 to move upward, and the stop column moves downward along the guide surface 111, and after the height is adjusted, the stop column slides down to be connected with the limit slot on the lower side, and the first bracket 1 is fixed by relying on the limit of the limit surface 112, which can prevent the top air duct cover from continuing to drop due to gravity, and when increasing the height of the top air duct cover, the adjustment method is simpler and more reliable.

[0066] The utility model also provides a vehicle.

[0067] The vehicle according to the embodiment of the utility model comprises a cab and a height adjustment device 100 of any of the above embodiments, and a top air deflector is provided on the top of the cab, wherein the height of the vehicle box of different types of vehicles is different, and the vehicle may be a heavy truck, and a top air deflector is provided on the top of the cab of the heavy truck, and the rear end of the top air deflector is the vehicle box, and the top air deflector is provided to reduce the driving resistance, and the height adjustment device 100 is provided in the top air deflector, and the height of the top air deflector can be adjusted to match the height of the vehicle box, so as to more effectively reduce the driving resistance and reduce energy consumption. Among them, the height adjustment device 100 can be two groups, which are respectively installed on the top air deflector and the lateral sides of the cab, and the balance of the top air deflector is maintained by adjusting both ends at the same time.

[0068] Therefore, by setting the adjustment function of the pawl bracket 3, the height of the first bracket 1 relative to the second bracket 2 can be adjusted, and then the height of the top fairing can be adjusted to achieve effective drag reduction, and the structure of the adjustment device is stable and reliable, the adjustment method is simple and convenient, and the structure is simple, light weight and low cost.

[0069] Also, it should be noted that, in this embodiment, the pawl bracket 3 is mainly rotated relative to the second bracket 2 to adjust the height of the first bracket 1 and the second bracket 2, wherein the movement between the pawl bracket 3 and the second bracket 2 can also be a linear movement, that is, the pawl bracket 3 and the second bracket 2 are relatively translated, so that the pawl bracket 3 and the second bracket 2 can be separated and contacted, or it can be a composite movement of translation plus rotation, and its setting method is diverse and flexible. And the locking method of the locking part 6 is not limited to that described in this embodiment, and other locking methods can be used to achieve the locking and unlocking of the pawl bracket 3 relative to the second bracket 2.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A height adjustment device, characterized in that: The height adjustment device is used to adjust the height of the top fairing of the vehicle, and comprises: A first bracket, the first bracket is suitable for being connected to the top air guide cover, and the first bracket is provided with a limiting portion; a second bracket, the second bracket being adapted to be connected to the cab; A pawl bracket is rotatably connected to the second bracket, and the pawl bracket is provided with a stop portion, the stop portion is clamped to the limiting portion, and the stop portion is suitable for adjusting the position relative to the limiting portion when the pawl bracket rotates relative to the second bracket.

2. The height adjustment device according to claim 1, characterized in that: It also includes an elastic member, which is installed between the second bracket and the pawl bracket. There are multiple limiting parts, and the multiple limiting parts are distributed in the up and down directions. The stop part switches to another limiting part when the pawl bracket rotates along the first direction. The elastic member is used to apply an elastic force to the pawl bracket to rotate along the second direction, and the first direction is opposite to the second direction.

3. The height adjustment device according to claim 2, characterized in that: The pawl bracket is rotatably connected to the second bracket via a rotating shaft, and the elastic member is configured as a torsion spring, which is sleeved outside the rotating shaft and elastically presses against the pawl bracket and the second bracket respectively.

4. The height adjustment device according to claim 2, characterized in that: It also includes a locking portion, the locking portion is inserted through the pawl bracket and the second bracket, the elastic member elastically presses against the locking portion, the locking portion is movable relative to the pawl bracket and the second bracket, and the locking portion has an unlocking position and a locking position; Wherein, when the locking portion is located at the locking position, the pawl bracket is locked relative to the second bracket, and when the locking portion is located at the unlocking position, the pawl bracket is rotatable relative to the second bracket.

5. The height adjustment device according to claim 4, characterized in that: The locking portion is configured as a locking shaft, and the second bracket is provided with a connecting rotation groove and a locking groove, the rotation groove is configured as an arc groove, the arc groove extends circumferentially along the rotation axis of the pawl bracket, and the locking groove extends vertically, and the locking shaft is located in the rotation groove when in the unlocking position and in the locking groove when in the locking position.

6. The height adjustment device according to claim 5, characterized in that: The elastic member is provided with a first recessed portion and a second recessed portion, and a stop protrusion is formed at the connection between the first recessed portion and the second recessed portion, the locking portion is pressed against the first recessed portion when in the unlocking position and against the second recessed portion when in the locking position, and is suitable for crossing the stop protrusion to switch from one of the first recessed portion and the second recessed portion to the other.

7. The height adjustment device according to claim 1, characterized in that: The limiting portion is configured as a limiting slot, the stopping portion is configured as a stopping column, and the stopping column is suitable for stopping in the limiting slot.

8. The height adjustment device according to claim 7, characterized in that: The limit slot is provided with a guide surface and a limit surface, the limit surface is connected to the upper end of the guide surface, and the stop column is suitable for being introduced into the limit slot along the guide surface and suitable for stopping at the limit surface.

9. The height adjustment device according to claim 8, characterized in that: The first bracket is configured such that when the first bracket moves upward relative to the second bracket, the guide surface is suitable for pushing the stop column to drive the pawl bracket to rotate and make the stop column switch to a limit slot located below the current limit slot.

10. A vehicle, characterized in that: It comprises a cab and the height adjustment device according to any one of claims 1 to 9, wherein the top of the cab is provided with the top air deflector.

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