Air duct fixing structure and carriage

Abstract

The present application relates to the technical field of special-purpose vehicles, and in particular to an air duct fixing structure and a car body. The air duct fixing structure includes: a plurality of locking mechanisms, including a locking pin, the locking pin including a first section and a second section vertically connected to the first section; a car body floor, on which a plurality of first positioning holes and a plurality of second positioning holes are provided, the first section is rotatably connected in the first positioning hole, and the car body floor is provided with a locking pin slot for accommodating the locking pin at the first positioning hole; an air duct, which is provided on the car body floor, the air duct includes an air duct floor, and the air duct floor is fitted with the car body floor; when the air duct is fixed on the car body floor, the first section of the locking pin is simultaneously inserted into the first positioning hole and the auxiliary positioning hole, and the second section is inserted into the second positioning hole; when the air duct is not fixed on the car body floor, the locking pin is limited in the locking pin slot. The embodiment of the present application provides an air duct fixing structure and a car body to solve the problem of inconvenient arrangement and disassembly of the car body floor air duct in the related art.

Description

Technical Field

[0001] The present application relates to the technical field of special-purpose vehicles, and in particular to an air duct fixing structure and a vehicle compartment. Background Art

[0002] At present, camping vehicles in cold areas need to be equipped with warm air heating devices to ensure the comfort of camping in low temperature environments. To ensure the consistency of the heating effect in the car, air ducts need to be arranged on the floor of the car and fixed to the floor with self-tapping screws.

[0003] In the related art, the existing air duct fixing method uses self-tapping screws, which meets the requirements of fixing the air duct, but at the same time makes it inconvenient to disassemble the air duct. First, camping cars are generally three-purpose vehicles, which have three purposes: transporting people, transporting materials and camping. Due to the inconvenience of arranging and disassembling the air duct on the bottom plate of the car, the volume of the car for transporting materials is objectively reduced. In addition, when used for transporting materials, the movement of materials due to the bumps of the vehicle can easily cause damage to the air duct; secondly, camping cars are universal for all seasons. When camping at night in spring, summer and autumn does not require heating function, the existence of the air duct will cause long-term inconvenience in transporting materials. Summary of the invention

[0004] The embodiments of the present application provide an air duct fixing structure and a vehicle compartment to solve the problem of inconvenient arrangement and disassembly of the air duct on the vehicle compartment floor in the related art.

[0005] To achieve the above objectives, in a first aspect, the present application provides an air duct fixing structure, which includes:

[0006] A plurality of locking mechanisms, including a locking pin, wherein the locking pin includes a first section and a second section connected to the first section, and the second section is vertically connected to the first section;

[0007] A carriage floor, on which a plurality of first positioning holes and a plurality of second positioning holes are provided, the first section is rotatably connected in the first positioning holes, and the carriage floor is provided with a lock pin groove for accommodating a lock pin at the first positioning holes;

[0008] An air duct is arranged on the vehicle floor, the air duct comprises an air duct bottom plate, the air duct bottom plate is arranged in close contact with the vehicle floor plate, and an auxiliary positioning hole corresponding to the first positioning hole is arranged on the air duct bottom plate, and the second positioning hole is located outside the coverage range of the air duct bottom plate;

[0009] When the air duct is fixed on the vehicle floor, the first section of the lock pin is simultaneously inserted into the first positioning hole and the auxiliary positioning hole, and the second section is inserted into the second positioning hole; when the air duct is not fixed on the vehicle floor, the lock pin is limited in the lock pin groove.

[0010] In some embodiments, the locking pin slot includes a base slot and a first slot, and the inner diameter of the first slot is smaller than the inner diameter of the base slot;

[0011] The locking pin comprises:

[0012] A lock pin base connected to an end of the first section that is not connected to the second section, and having a diameter greater than that of the first section, the lock pin base being limited in the base groove, and having a height greater than that of the lock pin base;

[0013] The spring is sleeved on the first section and limited between the second section bent and connected to the first section and the lock pin base. The spring and the first section are accommodated in the groove of the first section.

[0014] In some embodiments, the locking pin base is threadedly connected to the first section, and two opposite cutting surfaces are provided on the locking pin base, and the cutting allowance is greater than the diameter of the first section.

[0015] In some embodiments, one end of the second section of the locking pin is connected to the first section, and the other end is provided with a fixed end perpendicular to the second section, and the fixed end is used to be inserted into the second positioning hole.

[0016] In some embodiments, the first section is disposed perpendicularly to the second section, and the fixed end is disposed perpendicularly to the second section and parallel to the first section;

[0017] A hand-held block is arranged on the top of the fixed end.

[0018] In some embodiments, the locking pin groove includes a two-section groove and a three-section groove, wherein the second section is limited in the two-section groove, and the fixed end is limited in the three-section groove.

[0019] In some embodiments, the fixing end is loosely matched with the second positioning hole.

[0020] In some embodiments, four first positioning holes are provided on the vehicle compartment floor, and the four first positioning holes are arranged in a rectangular shape.

[0021] In some embodiments, the opening shape of the first positioning hole on the vehicle floor is a waist-shaped hole.

[0022] In a second aspect, a carriage is provided, comprising:

[0023] An air duct fixing structure as described above is movably arranged on the vehicle compartment.

[0024] The beneficial effects of the technical solution provided by this application include:

[0025] The embodiment of the present application provides an air duct fixing structure and a carriage, wherein a locking pin is provided, the locking pin has two sections, namely a first section and a second section, wherein the first section is rotatably connected to a first positioning hole of a carriage floor, and an auxiliary positioning hole corresponding to the first positioning hole is provided on the air duct floor, and a second positioning hole for fixing the second section of the locking pin is also provided on the carriage floor;

[0026] When the air duct is not fixed on the carriage floor, the locking pin is located in the first positioning hole, which does not affect the use of the carriage floor;

[0027] When the air duct needs to be fixed to the car floor, the auxiliary positioning hole on the air duct floor is aligned with the first positioning hole on the car floor to preliminarily find the installation position of the air duct. Since the second positioning hole is located outside the coverage of the air duct floor, the locking pin can rotate in the first positioning hole and fix the second section to the second positioning hole on the car floor, thereby fixing the air duct to the car floor.

[0028] When the air duct needs to be removed from the car floor, the locking pin only needs to be rotated again to disengage the second section from the second positioning hole, thereby releasing the fixation of the air duct and achieving removal of the air duct. That is, the detachable connection of the air duct is completed through the locking pin, and the disassembly and installation process is convenient. Therefore, it can solve the problem of inconvenient arrangement and disassembly of the car floor air duct in related technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A schematic diagram of an air duct provided in an embodiment of the present application being fixed on a floor of a vehicle compartment;

[0031] Figure 2 An exploded view of an air duct provided in an embodiment of the present application being fixed to a floor of a vehicle compartment;

[0032] Figure 3 A schematic diagram of the carriage floor provided for this application;

[0033] Figure 4 is a schematic diagram of the structure of the lock pin;

[0034] Figure 5 The cross section of the car floor at the lock pin groove Figure 1 ;

[0035] Figure 6 The cross section of the car floor at the lock pin groove Figure 2 ;

[0036] Figure 7 A cross-sectional view of the carriage floor when the lock pin is received in the lock pin groove;

[0037] Figure 8 The cross-sectional view shows the air duct being fixed to the floor of the carriage by the locking pin;

[0038] Fig. 9 Schematic diagram of the air duct structure.

[0039] In the figure: 1, car floor; 11, first positioning hole; 12, second positioning hole; 2, air duct; 21, air duct floor; 22, air duct cover; 23, auxiliary positioning hole; 24, air outlet; 3, locking pin; 31, first section; 32, second section; 33, fixed end; 331, hand-held block; 34, locking pin base; 341, cutting surface; 4, spring; 5, locking pin groove; 51, first section groove; 511, limiting boss; 52, second section groove; 53, third section groove; 54, base groove. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0041] In order to ensure the comfort of camping in low temperature environment, camping vehicles in cold areas need to be equipped with warm air heating devices; in order to ensure the consistency of the heating effect of the car, it is necessary to arrange air ducts on the floor of the car and fix them to the floor of the car with self-tapping screws. However, the existing air duct fixing method uses self-tapping screws, which meets the requirements of fixing the air duct, but at the same time makes it inconvenient to disassemble the air duct. First of all, camping vehicles are generally three-purpose vehicles, which can transport people, transport materials and camp. Due to the inconvenience of arranging and disassembling the air duct on the floor of the car, the volume of the materials transported in the car is objectively reduced. Moreover, when used for material transportation, the movement of materials due to the bumps of the vehicle can easily cause damage to the air duct; secondly, camping vehicles are universal in all seasons. When camping at night in spring, summer and autumn does not require heating function, the existence of air ducts causes long-term inconvenience in transporting materials.

[0042] The embodiment of the present application provides an air duct fixing structure, which can solve the problem of inconvenient arrangement and disassembly of the air duct on the vehicle floor in the related art.

[0043] See also Figures 1 to 9 As shown, an embodiment of the present application provides an air duct fixing structure, which includes:

[0044] A plurality of locking mechanisms, including a locking pin 3, wherein the locking pin 3 includes a first section 31 and a second section 32 vertically connected to the first section 31;

[0045] The carriage floor 1 is provided with a plurality of first positioning holes 11 and a plurality of second positioning holes 12, the first section 31 is rotatably connected in the first positioning holes 11, and the carriage floor 1 is provided with a locking pin groove 5 for accommodating the locking pin 3 at the first positioning holes 11;

[0046] The air duct 2 is arranged on the vehicle floor 1, and the air duct 2 includes an air duct bottom plate 21. Specifically, see Figure 2 and Fig. 9 As shown, the cross section of the air duct 2 in the vertical direction is in the shape of a Chinese character "J". The air duct bottom plate 21 has an edge of the Chinese character "J". The air duct bottom plate 21 is arranged in a close fit with the vehicle bottom plate 1 to facilitate the fixation of the air duct 2. An auxiliary positioning hole 23 corresponding to the first positioning hole 11 is arranged on the air duct bottom plate 21. When fixing the air duct 2, the auxiliary positioning hole 23 is aligned with the first positioning hole 11, and the air duct 2 can be preliminarily positioned on the vehicle bottom plate 1. It should be noted that the second positioning hole 12 is located outside the coverage range of the air duct bottom plate 21, so as to avoid the locking pin 3 being unable to be fixed due to the second positioning hole 12 being covered by the air duct bottom plate 12;

[0047] Specifically, when the air duct 2 is fixed on the vehicle floor 1, the first section 31 of the locking pin 3 is simultaneously passed through the first positioning hole 11 and the auxiliary positioning hole 23, that is, the locking pin 3 is simultaneously passed through the air duct 2 and the vehicle floor 1. At this time, the second section 32 is passed through the second positioning hole 12, thereby achieving the purpose of fixing the air duct 2 on the vehicle floor 1; when the air duct 2 is not fixed on the vehicle floor 1, the locking pin 3 is limited in the locking pin groove 5, which does not affect the use of the vehicle floor 1.

[0048] The embodiment of the present application provides an air duct fixing structure, in which a locking pin 3 is provided, and the locking pin 3 has two sections, namely a first section 31 and a second section 32, wherein the first section 31 is rotatably connected to the first positioning hole 11 of the vehicle floor 1, and an auxiliary positioning hole 23 corresponding to the first positioning hole 11 is provided on the air duct floor 21, and a second positioning hole 12 for fixing the second section 32 of the locking pin 3 is also provided on the vehicle floor 1;

[0049] When the air duct 2 is not fixed on the vehicle floor 1, the lock pin 3 is located in the first positioning hole 11 and accommodated in the lock pin groove 5, which does not affect the use of the vehicle floor 1;

[0050] When the air duct 2 needs to be fixed to the vehicle floor 1, the auxiliary positioning hole 23 on the air duct floor 21 is aligned with the first positioning hole 11 on the vehicle floor 1 to preliminarily find the installation position of the air duct 2. Since the second positioning hole 12 is located outside the coverage of the air duct floor 21, the lock pin 3 can rotate in the first positioning hole 11 and fix the second section 32 to the second positioning hole 12 located on the vehicle floor 1, thereby fixing the air duct 2 to the vehicle floor 1;

[0051] When the air duct 2 needs to be removed from the car floor 1, the locking pin 3 only needs to be rotated again to disengage the second section 32 from the second positioning hole 12, thereby releasing the fixation of the air duct 2 and realizing the removal of the air duct 2. That is, the detachable connection of the air duct 2 is completed through the locking pin 3, and the disassembly and installation process is convenient. Therefore, it can solve the problem of the inconvenience of the arrangement and disassembly of the car floor air duct in the related technology.

[0052] Specifically, see Fig. 9 As shown, the air duct 2 includes an air duct bottom plate 21 and an air duct cover plate 22, wherein the air duct bottom plate 21 and the air duct cover plate 22 can be integrally formed or welded together; Fig. 9 As shown, auxiliary positioning holes 23 are provided on the air duct bottom plate 21 for fixing the air duct 2, and air outlet holes 24 are provided on the air duct cover plate 22. Specifically, the air outlet holes 24 are distributed in an array on the air duct cover plate 22 for uniform air outlet of the air duct 2.

[0053] In some optional embodiments, see Figure 5 As shown, the lock pin groove 5 includes a base groove 54 and a section groove 51, and the inner diameter of the section groove 51 is smaller than the inner diameter of the base groove 54;

[0054] And, combined with Figure 4 As shown, the locking pin 3 comprises:

[0055] The lock pin base 34 is connected to the end of the first section 31 that is not connected to the second section 32, and the diameter of the lock pin base 34 is greater than the diameter of the first section 31. Specifically, the lock pin base 34 is limited in the base groove 54, and the height of the base groove 54 is greater than the height of the lock pin base 34, so that the lock pin base 34 can move up and down in the base groove 54, which is convenient for pulling out the lock pin 3, fixing the second section 32 in the second positioning hole 12, or taking out and removing the second section 32 from the second positioning hole 12;

[0056] That is, when the lock pin 3 is accommodated in the lock pin slot 5 , the lock pin base 34 is located at the bottom of the base slot 54 ; when the lock pin 3 fixes the air duct 2 on the vehicle floor 1 , the lock pin base 34 is located at a position of the base slot 54 close to a section of the slot 51 .

[0057] Specifically, when the air duct 2 is not fixed directly on the carriage floor 1 , the locking pin 3 is located in the locking pin slot 5 on the carriage floor 1 , and the top of the locking pin 3 is not higher than the upper surface of the carriage floor 1 .

[0058] Optionally, the locking pin 3 further comprises a spring 4, see Figure 7 As shown, Figure 7 The cross-sectional view of the lock pin 3 being limited in the lock pin groove 5: the spring 4 is sleeved on the first section 31 and limited between the second section 32 bent and connected to the first section 31 and the lock pin base 34; specifically, the base groove 54 also includes a spring groove, and a limited position boss 511 is formed between the spring groove and the first section groove 51, see Figure 7 As shown, the spring 4 is limited between the limiting boss 511 and the lock pin base 34;

[0059] When the lock pin 3 is accommodated in the lock pin groove 5, the lock pin base 34 is located at the bottom of the base groove 54, and the spring 4 is accommodated in the spring groove; when the lock pin 3 fixes the air duct 2 on the vehicle floor 1, it is first necessary to lift the lock pin 3 as a whole, lift the second section 32 of the lock pin 3 out of the lock pin groove 5, and rotate it toward the second positioning hole 12, at this time the spring 4 is compressed; when the second section 32 of the lock pin 3 is fixed to the second positioning hole 12, due to the presence of the spring 4, the upper and lower ends of the spring 4 are limited between the limiting boss 511 and the lock pin base 34, the spring 4 itself will provide a restoring force, so that the second section 32 has a downward force in the Z direction, so that the lock pin 3 can fix the air duct 2 on the vehicle floor 1 more firmly.

[0060] By combining the spring 4 and the locking pin 3 to replace the self-tapping screws, the fixing method of the air duct 2 is changed to achieve the purpose of convenient disassembly, improve the convenience of disassembly and assembly of the air duct 2 and the convenience of vehicle use, and reduce the risk of damage to the air duct 2.

[0061] In some optional embodiments, the locking pin base 34 is threadedly connected to the first section 31, see Figure 4 As shown, the lock pin base 34 is provided with two opposite cutting surfaces 341, and the cutting allowance is larger than the diameter of the first section 31. Specifically, the two opposite cutting surfaces 341 are provided on the lock pin base 34 to facilitate the use of a wrench to tighten the lock pin base 34 so that it is threadedly connected with the first section 31. It should be noted that the step of sleeve-arranging the spring 4 needs to be performed before the threaded connection; the cutting allowance is larger than the diameter of the first section 31 to facilitate the lock pin base 34 to limit the spring 4.

[0062] In some optional embodiments, see Figure 4As shown, one end of the second section 32 of the locking pin 3 is connected to the first section 31, and the other end is provided with a fixed end 33 perpendicular to the second section 32, and the fixed end 33 is used to be inserted into the second positioning hole 12. Optionally, the fixed end 33 is arranged parallel to the first section 31, and optionally, the connection between the fixed end 33 and the second section 32 can be welding.

[0063] In some optional embodiments, the first section 31 and the second section 32 are arranged perpendicularly, and the fixed end 33 is perpendicular to the second section 32 and arranged parallel to the first section 31; specifically, the second section 32 is parallel to the plane where the vehicle floor 1 is located, and the air duct 2 can be fixed on the vehicle floor 1 more firmly;

[0064] Optionally, a hand-held block 331 is provided at the top of the fixed end 33. Figure 4 As shown, the hand-held block 331 can be a locally processed pit or a convex block protruding from the surface of the fixed end 33, and its purpose is: when inserting and removing the lock pin 3 by hand, no other tools are needed, and the operation is convenient;

[0065] Specifically, when the air duct 2 is not fixed directly on the carriage floor 1, the lock pin 3 is located in the lock pin slot 5 on the carriage floor 1, and the top of the lock pin 3 is not higher than the upper surface of the carriage floor 1. Figure 4 As shown, the hand-held block 331 adopts a pit structure, and the pit structure is located at an end away from the second section 32, which is convenient for taking.

[0066] In some optional embodiments, see Figure 5 As shown, the lock pin slot 5 includes a two-segment slot 52 and a three-segment slot 53, wherein the second segment 32 is limited in the two-segment slot 52, and the fixed end 33 is limited in the three-segment slot 53. Figure 5 , Figure 7 and Figure 8 As shown, the shapes of the second-stage groove 52 and the third-stage groove 53 fit the shapes of the second section 32 and the fixed end 33 of the lock pin 3. When the lock pin 3 is accommodated in the lock pin groove 5, the lock pin 3 will not rock back and forth and be worn;

[0067] Optionally, the fixing end 33 is clearance-matched with the second positioning hole 12, see Figure 8 As shown, Figure 8 It is a schematic diagram when the fixing end 33 is located in the second positioning hole 12 . Specifically, the depth of the second positioning hole 12 is greater than the height of the fixing end 33 , and the fixing end 33 can be completely fixed in the second positioning hole 12 .

[0068] Optionally, the depth of the second-section groove 52 is greater than the diameter of the second section 32 , so that the second section 32 can be accommodated in the second-section groove 52 without protruding from the second-section groove 52 , and does not affect the normal use of the vehicle floor 1 .

[0069] In some optional embodiments, see Figures 1 to 3As shown, four first positioning holes 11 are provided on the vehicle floor 1, and the four first positioning holes 11 are arranged in a rectangular shape. Specifically, since the air duct 2 is rectangular as a whole, four first positioning holes 11 are provided at corresponding positions of the vehicle floor 1 to fix the four corners of the air duct 2; of course, more first positioning holes 11 may also be provided to achieve a better fixing effect.

[0070] Correspondingly, four auxiliary positioning holes 23 are also provided on the air duct bottom plate 21 . Specifically, the number and positions of the auxiliary positioning holes 23 are consistent with those of the first positioning holes 11 .

[0071] See also Figure 2 As shown, two first positioning holes 11 are provided on the vehicle floor 1 along the width direction of the air duct 2, and second positioning holes 12 are provided in the direction away from the two first positioning holes 11. This can avoid the situation where the air duct bottom plate 21 covers the second positioning holes 12 or the second positioning holes 12 are located within the coverage range of the air duct 2 when the air duct 2 covers the vehicle floor 1.

[0072] Of course, except Figure 2 and Figure 8 In the fixing method, the locking pin 3 is accommodated in the first positioning hole 11 in the car floor 1, and the second section 32 of the locking pin 3 is fixed to the second positioning hole 12 by rotating the locking pin 3. The locking pin 3 can also be accommodated in the second positioning hole 12. When in use, the auxiliary positioning hole 23 of the air duct 2 is aligned with the first positioning hole 11 to complete the preliminary alignment of the position of the air duct 2, and then the locking pin 3 is lifted from the second positioning hole 12 and rotated, and the second section 32 is passed through the first positioning hole 11 and the auxiliary positioning hole 23 at the same time, which can also complete the fixation of the air duct 2. However, compared with the method of accommodating the locking pin 3 in the first positioning hole 11, the fixed end 33 connected to the second section 32 needs to pass through the air duct bottom plate 21 and the car floor 1 at the same time, and the Z-upward force is greater, so the first method is preferred.

[0073] In some optional embodiments, see Figure 5 and Figure 7 As shown, the opening shape of the first positioning hole 11 on the vehicle floor 1 is a waist-shaped hole. Specifically, the lock pin 3 is accommodated in the lock pin groove 5, and the second section 32 of the lock pin 3 itself has a length and needs to be taken out from the first positioning hole 11, so the first positioning hole 11 needs to be a long hole, preferably a waist-shaped hole;

[0074] Optionally, combined Figure 8 As shown, the auxiliary positioning hole 23 is also a waist-shaped hole, and its size is consistent with that of the first positioning hole 11, which is convenient for lifting the locking pin 3 when using; of course, the auxiliary positioning hole 23 can also be larger than the first positioning hole 11, but

[0075] Optionally, the first positioning hole 11 and the first section 31 are clearance-fitted, and clearance-fitting refers to a fit with a gap (including a minimum gap equal to zero). Preferably, the gap between the two is 0.1 cm. While the first positioning hole 11 does not wear the first section 31 of the locking pin 3, the air duct 2 will not shake due to an excessive gap between the two.

[0076] Optionally, the width of the first positioning hole 11 is greater than the diameter of the second section 32 , so as to facilitate lifting the second section 32 out of the first positioning hole 11 .

[0077] The air duct fixing structure provided by the present application is that when the vehicle is in a cold area camping state, the air duct 2 is installed on the vehicle compartment floor 1. At this time, the position of the lock pin 3 is relative to Figure 7 Rotate the position shown to Figure 8 In the position shown in , the second section 32 passes through the auxiliary positioning hole 23, and the fixed end 33 is clamped into the second positioning hole 12 on the car bottom plate 1 under the pressure of the spring 4. The second section 32 presses the air duct bottom plate 21, limits the position in the X and Z directions, and limits the movement of the air duct 2 in the Y+ direction;

[0078] By adding a locking mechanism in the Y direction (i.e. the length direction of the air duct 2), the air duct 2 is restricted from moving in the Y direction, i.e. Figure 1 and Figure 2 As shown, the air duct 2 is locked by four symmetrical locking mechanisms.

[0079] It should be noted that when the air duct 2 is placed on the vehicle floor 1 , the lower side surface of the fixed end 33 of the locking pin 3 when the compression spring 4 is pulled upward to the limit position is higher than the upper surface of the air duct 2 .

[0080] The present application also provides a carriage, comprising an air duct fixing structure as described above, which is movably arranged on the carriage. When the vehicle is performing a cargo transportation task, or is in a camping state where heating is not required, the air duct fixing structure is removed from the carriage and uniformly placed at the front of the cargo box. At this time, the locking pin 3 is fixed in the locking pin groove 5 of the carriage floor 1 under the pressure of the spring 4, and the upper surface of the carriage floor 1 is flat and unobstructed.

[0081] The present technical solution designs a duct fixing structure and a carriage, which integrates the carriage floor 1 and the duct 2 and adopts a quick-disassembly design concept to ensure that the duct 2 can be quickly installed and removed without using other tools. When camping, the duct 2 is arranged on the carriage floor 1, and the duct 2 is quickly removed after camping, thereby improving the carriage's material transportation capacity and preventing the duct from being damaged by bumps during material transportation.

[0082] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0083] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0084] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A duct fixing structure, characterized in that: It includes: A plurality of locking mechanisms, comprising a locking pin (3), wherein the locking pin (3) comprises a first section (31) and a second section (32) connected to the first section (31), and the second section (32) is vertically connected to the first section (31); A carriage floor (1) is provided with a plurality of first positioning holes (11) and a plurality of second positioning holes (12), the first section (31) is rotatably connected in the first positioning hole (11), and the carriage floor (1) is provided with a lock pin groove (5) for accommodating a lock pin (3) at the first positioning hole (11); An air duct (2) is arranged on a vehicle compartment floor (1), the air duct (2) comprising an air duct floor (21), the air duct floor (21) being arranged in close contact with the vehicle compartment floor (1), and the air duct floor (21) is provided with an auxiliary positioning hole (23) corresponding to the first positioning hole (11), and the second positioning hole (12) is located outside the coverage range of the air duct floor (21); When the air duct (2) is fixed on the vehicle floor (1), the first section (31) of the lock pin (3) is simultaneously inserted into the first positioning hole (11) and the auxiliary positioning hole (23), and the second section (32) is inserted into the second positioning hole (12); when the air duct (2) is not fixed on the vehicle floor (1), the lock pin (3) is limited in the lock pin groove (5).

2. The air duct fixing structure according to claim 1, characterized in that: The locking pin groove (5) comprises a base groove (54) and a first groove (51), and the inner diameter of the first groove (51) is smaller than the inner diameter of the base groove (54); The locking pin (3) comprises: A lock pin base (34) connected to an end of the first section (31) not connected to the second section (32), and the diameter of the lock pin base (34) is greater than the diameter of the first section (31), the lock pin base (34) is limited in the base groove (54), and the height of the base groove (54) is greater than the height of the lock pin base (34); The spring (4) is sleeved on the first section (31) and is limited between the second section (32) bent and connected to the first section (31) and the lock pin base (34). The spring (4) and the first section (31) are accommodated in the first section groove (51).

3. The air duct fixing structure according to claim 2, characterized in that: The locking pin base (34) is threadedly connected to the first section (31); two opposite cutting surfaces (341) are arranged on the locking pin base (34), and the cutting allowance is greater than the diameter of the first section (31).

4. The air duct fixing structure according to claim 1, characterized in that: One end of the second section (32) of the locking pin (3) is connected to the first section (31), and the other end is provided with a fixed end (33) perpendicular to the second section (32), and the fixed end (33) is used to be inserted into the second positioning hole (12).

5. The air duct fixing structure according to claim 4, characterized in that: The first section (31) and the second section (32) are arranged perpendicularly, and the fixed end (33) is arranged perpendicularly to the second section (32) and parallel to the first section (31); A hand-held block (331) is provided at the top of the fixed end (33).

6. The air duct fixing structure according to claim 4, characterized in that: The locking pin groove (5) comprises a two-section groove (52) and a three-section groove (53), wherein the second section (32) is limited in the two-section groove (52), and the fixed end (33) is limited in the three-section groove (53).

7. The air duct fixing structure according to claim 4, characterized in that: The fixed end (33) is clearance-matched with the second positioning hole (12).

8. The air duct fixing structure according to claim 1, characterized in that: Four first positioning holes (11) are provided on the vehicle compartment floor (1), and the four first positioning holes (11) are arranged in a rectangular shape.

9. The air duct fixing structure according to claim 1, characterized in that: The opening shape of the first positioning hole (11) on the vehicle compartment floor (1) is a waist-shaped hole.

10. A carriage, characterized in that: It includes: An air duct fixing structure as described in any one of claims 1 to 9, which is movably arranged on the vehicle body.

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