Foldable rearview mirror support, rearview mirror assembly and engineering vehicle

Abstract

The invention discloses a foldable rearview mirror bracket, a rearview mirror assembly and an engineering vehicle. The rearview mirror mounting bracket is provided with two mounting ends; the upper connecting plate and the lower connecting plate are installed on the supporting stand column. The upper mounting end of the rearview mirror mounting bracket and the upper connecting plate are hinged together in a pre-tightening force manner by the first connecting part; the second connecting part is used for hinging the lower mounting end of the rearview mounting bracket and the lower connecting plate together in a pre-tightening force manner; the positioning component is provided with two positioning fixing points which are 90 degrees different from each other; when the rearview mounting bracket rotates to one of the positioning fixing points, the rearview mounting bracket is in an unfolded state; and when the rearview mirror mounting bracket rotates to another positioning fixing point, the rearview mirror mounting bracket is in a folded state. According to the invention, parts are simple to process, complex special-shaped parts are avoided, the manufacturing cost is low, the installation is convenient and fast, and time and labor are saved during use.

Description

Technical Field

[0001] The invention relates to a foldable rearview mirror bracket and belongs to the technical field of engineering vehicles. Background Art

[0002] Most mining vehicles are off-road transport vehicles. When shipping or transferring, the vehicles need to be placed on flatbed trucks for long-distance transportation. When the rearview mirror is in the open state, the vehicle is in an extra-wide state during road transportation, and the rearview mirror is easily damaged by collision. For safe transportation, the rearview mirror needs to be folded during transfer.

[0003] Existing road transport vehicles are equipped with rearview mirror brackets that can be directly adjusted manually. The mounting ends of such rearview mirror brackets are all equipped with plastic parts for installation and fixation. In the field of non-road vehicles, especially in mining areas where the environment and working conditions are harsh and the road surface is severely bumpy, there are certain requirements for its installation method and the strength of the material of the parts. Therefore, this type of road vehicle rearview mirror bracket is very easy to be damaged by long-term bumps and vibrations in mining areas, so it is not suitable for mining vehicles. At present, the rearview mirror brackets of mining vehicles are mostly rigidly connected by bolts, and the mounting end of the bracket is directly tightened with bolts. Although this installation method is firm, when the angle of the bracket needs to be adjusted, the operator can only use tools to loosen the bolts and adjust the bracket angle, and then tighten the bolts. This method has low working efficiency and is inconvenient to disassemble. In addition, each disassembly affects the life and performance of the nut. Summary of the invention

[0004] In order to ensure that the vehicle does not exceed the width during transportation and to protect the rearview mirror, the present invention provides a foldable rearview mirror bracket. When the vehicle is in transportation, the rearview mirror bracket can be folded manually without the aid of tools, thereby achieving the effects of safe transportation, convenience, speed, time saving and labor saving. At the same time, taking into account various factors such as the mining environment and road conditions, this bracket should meet the use needs of the mining area and ensure that the structure has sufficient stability and reliability even on muddy and bumpy roads.

[0005] The present invention is implemented according to the following technical solutions: In a first aspect, the present invention provides a foldable rearview mirror bracket, comprising: The rearview mirror mounting bracket has coaxial mounting holes at the upper and lower mounting ends; The upper connecting plate and the lower connecting plate have coaxial mounting holes and are distributed upward and downward and fixed on the supporting columns; a first connecting member, hingedly connecting the upper mounting end of the rearview mirror mounting bracket and the upper connecting plate in a manner with a pre-tightening force; The second connecting component hinges the lower mounting end of the rearview mirror mounting bracket and the lower connecting plate together in a pre-tightening manner; the rearview mirror mounting bracket is pushed by an external force so that it can rotate circumferentially around the hinge points arranged on the upper and lower coaxial lines; A positioning component is arranged between the first connecting component and the upper mounting end and / or between the second connecting component and the lower mounting end, and the positioning component is provided with two positioning fixing points which are 90 degrees apart; when the rearview mirror mounting bracket is rotated to one of the positioning fixing points, the rearview mirror mounting bracket is in an unfolded state; when the rearview mirror mounting bracket is rotated to the other positioning fixing point, the rearview mirror mounting bracket is in a folded state.

[0006] In some embodiments, the first connecting component comprises: A sleeve is fixed to the bottom surface of the upper connecting plate in a coaxial manner with the mounting hole on the upper connecting plate; A compression spring, sleeved in the sleeve; A flanged bushing, in which a cylinder in the middle is inserted into the sleeve, and the cylinder can move axially in the sleeve, and the outer flange of the flanged bushing limits the inward axial movement of the cylinder, thereby controlling the compression amount of the compression spring; The connecting component is used to connect the upper mounting end of the rearview mirror mounting bracket, the upper connecting plate, the sleeve, the compression spring and the flanged bushing together, and can push the flanged bushing to compress the compression spring to generate an axial preload, thereby pressing the upper mounting end of the rearview mirror mounting bracket and the upper connecting plate together in the axial direction.

[0007] In some embodiments, the connecting components include a flange bolt and a flange nut; the flange bolt passes through the upper mounting end, upper connecting plate, sleeve, compression spring and flange bushing of the rearview mirror mounting bracket in sequence, and is finally pre-tightened by the flange nut; the flange nut is screwed into the portion where the flange bolt extends from the flange bushing, and by rotating the flange nut, the flange nut is moved axially in a linear manner, thereby pushing the flange bushing to compress the compression spring.

[0008] In some embodiments, the positioning component includes: A slot plate is fixed on the top surface of the upper connecting plate, wherein a through hole coaxially arranged with the sleeve is provided at the center of the slot plate, and a cross-shaped groove is extended from the through hole to the surrounding areas of the top surface of the slot plate; The two clamping rods are symmetrically fixed on the bottom surface of the upper mounting end in a straight line and are located on both sides of the mounting hole of the upper mounting end. The two clamping rods fall into a horizontal straight line groove or a vertical straight line groove to form a positioning and fixing point; the distance between the outer flange of the flange bushing and the bottom surface of the sleeve is not less than the depth of the clamping rod falling into the groove, so that the two clamping rods can be rotated out of the straight line groove.

[0009] In some embodiments, when the two clamping rods fall into the longitudinal I-shaped groove to form a longitudinal positioning fixing point, the rearview mirror mounting bracket is in an unfolded state, and when the two clamping rods fall into the transverse I-shaped groove to form a transverse positioning fixing point, the rearview mirror mounting bracket is in a folded state; Alternatively, when the two clamping rods fall into the horizontal I-shaped groove to form a horizontal positioning fixing point, the rearview mirror mounting bracket is in an unfolded state, and when the two clamping rods fall into the vertical I-shaped groove to form a vertical positioning fixing point, the rearview mirror mounting bracket is in a folded state.

[0010] In some embodiments, the groove on the clamping plate is a V-shaped groove, and the edges of the V-shaped groove are rounded, and the cross-section of the clamping rod falling into the V-shaped groove is an arc surface.

[0011] In some embodiments, the second connecting component comprises: A sleeve is fixed to the bottom surface of the lower connecting plate in a coaxial manner with the mounting hole on the lower connecting plate; A compression spring, sleeved in the sleeve; A flanged bushing, in which a cylinder in the middle is inserted into the sleeve, and the cylinder can move axially in the sleeve, and the outer flange of the flanged bushing limits the inward axial movement of the cylinder, thereby controlling the compression amount of the compression spring; The connecting component is used to connect the lower mounting end of the rearview mirror mounting bracket, the lower connecting plate, the sleeve, the compression spring and the flanged bushing together, and can push the flanged bushing to compress the compression spring to generate an axial preload, thereby pressing the lower mounting end of the rearview mirror mounting bracket and the lower connecting plate together in the axial direction.

[0012] In some embodiments, the connecting components include a flange bolt and a flange nut; the flange bolt passes through the lower mounting end, the lower connecting plate, the sleeve, the compression spring and the flange bushing in sequence, and is finally pre-tightened by the flange nut; the flange nut is screwed into the portion where the flange bolt extends from the flange bushing, and by rotating the flange nut, the flange nut is moved axially in a linear manner, thereby pushing the flange bushing to compress the compression spring.

[0013] In some embodiments, a gasket made of wear-resistant material is installed between the lower mounting end of the rearview mirror mounting bracket and the lower connecting plate.

[0014] In some embodiments, the rearview mirror mounting bracket is integrally in a "C" shape structure and is composed of a bent pipe, an upper mounting plate, and a lower mounting plate; wherein, the upper mounting plate constitutes the upper mounting end, and the lower mounting plate constitutes the lower mounting end; a coaxially arranged mounting hole is provided at the front of both the upper mounting plate and the lower mounting plate, and a slot extending forward is provided at the tail end of both the upper mounting plate and the lower mounting plate. The upper part of the bent pipe is inserted into the slot of the upper mounting plate and then welded together, and the lower part of the bent pipe is inserted into the slot of the lower mounting plate and then welded together.

[0015] In some embodiments, the upper connecting plate is integrally in an oval structure, and its first half covers the top opening of the support column and is welded together therewith; the lower connecting plate is integrally in a circular plate structure with an arc-shaped notch, and is welded to the outer circumferential surface of the support column through the arc-shaped notch; a coaxially arranged mounting hole is provided on both the upper connecting plate and the lower connecting plate.

[0016] In a second aspect, the present invention provides a rearview mirror assembly, including: A support column; The above-mentioned foldable rearview mirror bracket, and the foldable rearview mirror bracket is mounted on the support column; A rearview mirror, mounted on the rearview mirror mounting bracket.

[0017] In a third aspect, the present invention provides an engineering vehicle, including the above-mentioned foldable rearview mirror bracket; or, including the above-mentioned rearview mirror assembly.

[0018] Advantages of the present invention: The present invention is characterized by simple part processing, no complex special-shaped parts, low manufacturing cost, and convenient and fast installation. Only a wrench is needed during installation, and no other tools are required.

[0019] The present invention well solves the problem of the rearview mirror being too wide during the transportation of the equipment, and thus the problem of having to disassemble the rearview mirror assembly, which is time-consuming and laborious. The present invention can directly manually rotate the rearview mirror bracket to avoid the problem of being unable to transport due to the excessive width; and the present invention is equipped with a compression spring, which not only realizes the rotatable function but also has a shock-absorbing function, and can well meet the normal use of the equipment in harsh environments such as bumpy and muddy road conditions. Description of the Drawings

[0020] The drawings, as a part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an improper limitation to the present invention. Obviously, the drawings described below are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0021] In the attached picture: Figure 1 It is a cross-sectional schematic diagram of the overall installation structure of a foldable rearview mirror bracket of the present invention; Figures and symbols: 1. Flange bolts, 2-1. Bend pipe, 2-2. Upper mounting plate, 2-4. Lower mounting plate, 3-1. Slot plate, 3-2. Upper connecting plate, 3-3. Sleeve, 3-4. Triangular rib plate, 3-5. Lower connecting plate, 4. Compression spring, 5. Flanged bushing, 6. Flange nut, 7. Flange bolts, 8. Nylon gasket.

[0022] Figure 2 It is a schematic diagram of the overall installation structure of a foldable rearview mirror bracket of the present invention; Figures and symbols: 1. Flange bolt, 2. Rearview mirror mounting bracket, 3. Positioning component, 4. Compression spring, 5. Flanged bushing, 6. Flange nut, 7. Flange bolt, 8. Nylon gasket.

[0023] Figure 3 It is a schematic diagram of the structure decomposition of the rearview mirror mounting bracket of the present invention; Figure identification: 2-1. Bend pipe, 2-2. Upper mounting plate, 2-3. Clamping rod, 2-4. Lower mounting plate.

[0024] Figure 4 It is a partial structural exploded schematic diagram of a foldable rearview mirror bracket of the present invention; Figure identification: 3-1. Slot plate, 3-2. Upper connecting plate, 3-3. Sleeve, 3-4. Triangular rib plate, 3-5. Lower connecting plate.

[0025] Figure 5 A schematic diagram of an application example of a foldable rearview mirror bracket of the present invention (in unfolded state); Figure 6 A schematic diagram of an application example of a foldable rearview mirror bracket of the present invention (folded state); Figure 7 It is an exploded schematic diagram of an application example of a foldable rearview mirror bracket of the present invention; Figure 8 It is a structural schematic diagram of the upper mounting plate, the lower mounting plate, the upper connecting plate, and the lower connecting plate of the present invention (a is the upper mounting plate, b is the lower mounting plate, c is the upper connecting plate, and d is the lower connecting plate); Fig. 9 Schematic diagram of the structure of the clamping rod and the clamping slot plate of the present invention (a is the clamping rod, b is the clamping slot plate); Fig.10 It is a schematic structural diagram of the sleeve, rib plate, compression spring and flanged bushing of the present invention (a is the sleeve, b is the rib plate, c is the compression spring and d is the flanged bushing).

[0026] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0028] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present invention, it should be noted that, 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figure 1 , Figure 2 , Figure 5 , Figure 6As shown, a foldable rearview mirror bracket includes a rearview mirror mounting bracket 2, an upper connecting plate 3-2, a lower connecting plate 3-5, a first connecting component, a second connecting component, and a positioning component 3; the upper and lower mounting holes of the rearview mirror mounting bracket 2 are coaxial; the mounting holes of the upper connecting plate 3-2 and the lower connecting plate 3-5 are coaxial and are distributed and fixed on the supporting column in an upper and lower manner; the first connecting component hinges the upper mounting end of the rearview mirror mounting bracket 2 with the upper connecting plate 3-2 in a pre-tightening manner; the second connecting component hinges the lower mounting end of the rearview mirror mounting bracket 2 with the lower connecting plate 3-5 Hinge together with a pre-tightening force; the rearview mirror mounting bracket 2 is pushed by an external force so that it can rotate circumferentially around the hinge points arranged on the upper and lower coaxial lines; the positioning component 3 is arranged between the first connecting component and the upper mounting end and / or between the second connecting component and the lower mounting end, and the positioning component 3 is provided with two positioning fixing points with a difference of 90 degrees; when the rearview mirror mounting bracket 2 is rotated to one of the positioning fixing points, the rearview mirror mounting bracket 2 is in an unfolded state; when the rearview mirror mounting bracket 2 is rotated to the other positioning fixing point, the rearview mirror mounting bracket 2 is in a folded state.

[0031] It should be noted that there are three situations for the installation position of the positioning component: the first is that the positioning component is only assembled between the first connecting component and the upper mounting end; the second is that the positioning component is only assembled between the second connecting component and the lower mounting end; the third is that the positioning component is assembled between the first connecting component and the upper mounting end, and between the second connecting component and the lower mounting end.

[0032] Since the above three situations of the installation of the positioning component are similar, the following only describes in detail the technical solution in which the positioning component is only assembled between the first connecting component and the upper installation end.

[0033] like Figure 1 , Figure 2 As shown, the first connecting component includes a sleeve 3-3, a compression spring 4, a flanged bushing 5 and a connecting component; the sleeve 3-3 is fixed to the bottom surface of the upper connecting plate 3-2 in a coaxial manner with the mounting hole on the upper connecting plate 3-2; the compression spring 4 is sleeved in the sleeve 3-3; the middle cylinder of the flanged bushing 5 is inserted in the sleeve 3-3, and the cylinder can move axially in the sleeve 3-3, and the inward axial movement of the cylinder is limited by the outer flange of the flanged bushing 5, thereby controlling the compression amount of the compression spring 4; the connecting component is used to connect the upper mounting end of the rearview mirror mounting bracket 2, the upper connecting plate 3-2, the sleeve 3-3, the compression spring 4 and the flanged bushing 5 together, and can push the flanged bushing 5 to compress the compression spring 4 to generate an axial preload, thereby pressing the upper mounting end of the rearview mirror mounting bracket 2 and the upper connecting plate 3-2 together in the axial direction.

[0034] It should be noted that the compression spring 4 is entirely located inside the sleeve and is not exposed outside. On the one hand, the sleeve 3-3 can prevent the compression spring 4 from radial movement during the rotation process, and on the other hand, it can protect the compression spring 4 and extend the service life of the compression spring 4 to a certain extent. The two ends of the compression spring 4 are tightly ground and flattened, which can improve the firmness of the two ends of the compression spring, better resist external forces, and have more uniform elasticity, longer service life, and are more suitable for conditions with harsh road conditions.

[0035] For further solutions, please refer to Figure 1 , Figure 2 As shown, the connecting parts include a flange bolt 1 and a flange nut 6; the flange bolt 1 passes through the upper mounting end of the rearview mirror mounting bracket 2, the upper connecting plate 3-2, the sleeve 3-3, the compression spring 4 and the flange bushing 5 in sequence, and is finally pre-tightened by the flange nut 6; the flange nut 6 is screwed into the part where the flange bolt 1 extends from the flange bushing 5, and by rotating the flange nut 6, the flange nut 6 is moved axially in a straight line, thereby pushing the flange bushing 5 to compress the compression spring 4.

[0036] It should be noted that flange bolts have a larger supporting area than ordinary bolts, have better anti-loosening performance, can still maintain good connection stability in a vibration environment, and can reduce loosening caused by vibration.

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the positioning component 3 includes a slot plate 3-1 and two clamping rods 2-3; the slot plate 3-1 is fixed on the top surface of the upper connecting plate 3-2, and a through hole coaxially arranged with the sleeve 3-3 is provided in the center of the slot plate 3-1, and a cross-shaped groove extends from the through hole to the surrounding areas on the top surface of the slot plate 3-1; the two clamping rods 2-3 are symmetrically fixed on the bottom surface of the upper mounting end in a straight line, and are located on both sides of the mounting hole of the upper mounting end, and the two clamping rods 2-3 fall into the horizontal straight line groove or the longitudinal straight line groove to form a positioning fixing point; the distance between the outer flange of the flanged bushing 5 and the bottom surface of the sleeve 3-3 is not less than the depth of the clamping rod 2-3 falling into the groove, and the two clamping rods 2-3 can be rotated out of the straight line groove.

[0038] It should be noted that a plane is milled on the basis of the circular cross section of the clamping rod 2-3 to facilitate positioning and welding with the upper mounting plate 2-2, thereby ensuring the accuracy of positioning and the reliability of the structure.

[0039] Two installation situations of the two clamping rods on the rearview mirror mounting bracket are given below.

[0040] like Figure 2As shown, when the two clamping rods 2-3 fall into the longitudinal I-shaped groove to form a longitudinal positioning fixing point, the rearview mirror mounting bracket 2 is in an expanded state, and when the two clamping rods 2-3 fall into the transverse I-shaped groove to form a transverse positioning fixing point, the rearview mirror mounting bracket 2 is in a folded state; or, when the two clamping rods 2-3 fall into the transverse I-shaped groove to form a transverse positioning fixing point, the rearview mirror mounting bracket 2 is in an expanded state, and when the two clamping rods 2-3 fall into the longitudinal I-shaped groove to form a longitudinal positioning fixing point, the rearview mirror mounting bracket 2 is in a folded state.

[0041] Further solutions, such as Fig. 9 As shown, the groove on the clamping groove plate 3-1 is a V-shaped groove, and the edges of the V-shaped groove are rounded, and the cross section of the clamping rod 2-3 falling into the V-shaped groove is an arc surface.

[0042] As can be seen from the above, the use of the flanged bushing 5 can not only achieve compression of the compression spring 4 by tightening the flange nut 6, thereby using elastic force to pre-tighten the rearview mirror mounting bracket 2, but also achieve a certain limiting effect through the outer flange of the flanged bushing 5 during the pre-tightening process, and control the compression of the compression spring 4 by the distance between the outer flange of the flanged bushing 5 and the end face of the sleeve 3-3. When the rearview mirror mounting bracket 2 rotates out of the V-shaped groove, the rearview mirror mounting bracket 2 drives the flange bolt 1, the flanged bushing 5, and the flange nut 6 to move upward. At this time, the compression of the compression spring 4 reaches the maximum. At this time, the distance between the flanged bushing 5 and the end face of the sleeve 3-3 is the shortest distance, which can limit the continuous tightening of the flange nut 6 to cause excessive compression of the compression spring 4, thereby causing laboriousness in the rotation process. The flange nut 6 compresses the compression spring 4 through the flanged bushing 5, which can reduce the direct contact between the compression spring 4 and the flange nut 6 during the operation of the equipment, avoid the impact on the flange nut 6, and avoid the loosening of the flange nut 6.

[0043] like Figure 1 , Figure 2 , Fig.10 As shown, the second connecting component includes a sleeve 3-3, a compression spring 4, a flanged bushing 5 and a connecting component; the sleeve 3-3 is fixed to the bottom surface of the lower connecting plate 3-5 in a coaxial manner with the mounting hole on the lower connecting plate 3-5; the compression spring 4 is sleeved in the sleeve 3-3; the middle cylinder of the flanged bushing 5 is inserted in the sleeve 3-3, and the cylinder can move axially in the sleeve 3-3, and the inward axial movement of the cylinder is limited by the outer flange of the flanged bushing 5, thereby controlling the compression amount of the compression spring 4; the connecting component is used to connect the lower mounting end of the rearview mirror mounting bracket 2, the lower connecting plate 3-5, the sleeve 3-3, the compression spring 4 and the flanged bushing 5 together, and can push the flanged bushing 5 to compress the compression spring 4 to generate an axial preload, thereby pressing the lower mounting end of the rearview mirror mounting bracket 2 and the lower connecting plate 3-5 together in the axial direction.

[0044] For a further solution, continue to refer to Figure 1 and Figure 2 As shown, the connecting component includes a flange bolt 7 and a flange nut 6; the flange bolt 7 sequentially passes through the lower mounting end of the rearview mirror mounting bracket 2, the lower connecting plate 3-5, the sleeve 3-3, the compression spring 4, and the flanging bushing 5, and finally is pre-tightened by the flange nut 6; the flange nut 6 is screwed onto the part where the flange bolt 7 extends out of the flanging bushing 5. By rotating the flange nut 6, the flange nut 6 makes an axial linear movement, thereby pushing the flanging bushing 5 to compress the compression spring 4. When the rearview mirror mounting bracket 2 rotates out of the V-shaped groove, the rearview mirror mounting bracket 2 drives the flange bolt 7, the flanging bushing 5, and the flange nut 6 to move upward. At this time, the compression amount of the compression spring 4 reaches the maximum, and the distance between the flanging bushing 5 and the end face of the sleeve 3-3 is the shortest distance, which can prevent the flange nut 6 from being continuously tightened to cause excessive compression of the compression spring 4, thereby resulting in a laborious situation during the rotation process.

[0045] For a further solution, continue to refer to Figure 1 and Figure 2 As shown, a nylon gasket 8 is installed between the lower mounting end of the rearview mirror mounting bracket 2 and the lower connecting plate 3-5. The nylon gasket 8 is not only wear-resistant but also can prevent the two contact surfaces from directly contacting during the rotation of the rearview mirror mounting bracket 2, thus avoiding wear of the contact surfaces and preventing certain damage to the part surfaces.

[0046] The following further explains the specific structure of the above-mentioned rearview mirror mounting bracket.

[0047] As Figure 3 and Figure 8 shown, the rearview mirror mounting bracket 2 is integrally in a "C" shape and is composed of a bent pipe 2-1, an upper mounting plate 2-2, and a lower mounting plate 2-4; among them, the upper mounting plate 2-2 constitutes the upper mounting end, and the lower mounting plate 2-4 constitutes the lower mounting end; a coaxially arranged mounting hole is provided at the front of both the upper mounting plate 2-2 and the lower mounting plate 2-4, and a slot extending forward is provided at the tail end of both the upper mounting plate 2-2 and the lower mounting plate 2-4. The upper part of the bent pipe 2-1 is inserted into the slot of the upper mounting plate 2-2 and then welded together, and the lower part of the bent pipe 2-1 is inserted into the slot of the lower mounting plate 2-4 and then welded together.

[0048] It should be noted that the bent pipe 2-1 is formed by bending a common seamless steel pipe on the market. The two ends of the bent pipe 2-1 are respectively welded to the upper and lower mounting plates. The upper and lower mounting plates are both cut from steel plates, with simple processing and low manufacturing cost. The central holes of the upper and lower mounting plates are coaxial, ensuring that the rearview mirror mounting bracket can freely rotate around the central axis.

[0049] The following further explains the specific structure of the above-mentioned upper connecting plate and lower connecting plate.

[0050] As Figure 4, Figure 8 As shown, the upper connecting plate 3-2 is an elliptical structure as a whole, and its front half covers the top opening of the supporting column and is welded thereto; the lower connecting plate 3-5 is a circular plate structure with an arc-shaped notch as a whole, and is welded to the outer circumferential surface of the supporting column through the arc-shaped notch; the upper connecting plate 3-2 and the lower connecting plate 3-5 are each provided with a coaxially arranged mounting hole.

[0051] It should be noted that the slot plate 3-1 is coaxially welded with the upper connecting plate 3-2 and the sleeve 3-3 in sequence, and the orientation of the cross-shaped V-shaped groove on the slot plate can be determined according to the actual situation. The V-shaped groove shown in the figure is in the horizontal direction; the lower connecting plate 3-5 is also coaxially welded with the sleeve 3-3, and the mounting holes of the upper and lower connecting plates are coaxial to ensure that the rearview mirror mounting bracket can rotate freely around the central axis. The triangular rib plate 3-4 is welded below the upper and lower connecting plates to increase the strength of the structure and ensure a certain bearing capacity.

[0052] The present invention also provides a rearview mirror assembly, comprising a supporting column, the above-mentioned foldable rearview mirror bracket and a rearview mirror; the foldable rearview mirror bracket is mounted on the supporting column, and the rearview mirror is mounted on the rearview mirror mounting bracket.

[0053] Continue to refer to Figure 1 As shown, the upper part of the rearview mirror mounting bracket is passed through the upper mounting plate 2-2, the slot plate 3-1, the upper connecting plate 3-2, the sleeve 3-3, the compression spring 4, the flanged bushing 5 in sequence by the flange bolt 1, and finally fastened by the flange nut 6. The lower part of the rearview mirror mounting bracket is passed through the lower mounting plate 2-4, the nylon gasket 8, the lower connecting plate 3-5, the sleeve 3-3, the compression spring 4, the flanged bushing 5 in sequence by the flange bolt 7, and finally fastened by the flange nut 6.

[0054] Figure 5 The figure shows the schematic diagram of the rearview mirror assembly when the equipment is in normal operation. Figure 6 The picture shows the state of the rearview mirror after folding. Figure 7 The figure shows a schematic diagram of the structure of the rearview mirror assembly. As can be seen from the figure, when folding is required, the elbow can be directly rotated manually, which is convenient and fast, saving time and effort, and saving a certain amount of cost.

[0055] In summary, the present invention provides a foldable rearview mirror bracket, which achieves the following functions and effects: 1: The rearview mirror mounting bracket is rotated by compressing the compression spring. During the rotation process, the rearview mirror mounting bracket rises (or falls) as a whole, and the displacement of the rise (or fall) is supplemented by the compression spring. When the clamping rod welded on the rearview mirror mounting bracket cooperates with the V-groove on the clamping plate, the compression spring provides elastic force to pre-tighten the mounting end of the rearview mirror mounting bracket by tightening the flange nut. When the equipment is running on muddy, bumpy and uneven roads, the vibration generated by the equipment is absorbed by the compression spring to achieve a shock absorption effect, effectively ensuring the stability of the rearview mirror mounting bracket.

[0056] 2: The grooves on the slot plate are opened with V-shaped grooves on all sides based on the center hole, and the overall shape is a cross. The V-shaped groove cooperates with the straight-shaped clamping rod welded on the bracket for positioning. When the rearview mirror mounting bracket is rotated 90 degrees, it enters the next V-shaped groove. The edges of the V-shaped groove are rounded, and the angle of the V-shaped groove is designed to be an obtuse angle, which is convenient for the rearview mirror mounting bracket to rotate smoothly along the edge of the V-shaped groove, ensuring the reliability and stability of the structure.

[0057] 3: The outer circle of the flanging bushing cooperates with the sleeve, and the inner circle of the flanging bushing cooperates with the flange bolt, which effectively reduces the radial runout of the flange bolt. At the same time, by pre-tightening the flange nut, the compression spring is compressed through the end face of the sleeve, thereby achieving the purpose of pre-tightening. At the same time, it avoids the compression spring from directly contacting the flange nut, reducing the impact of the compression spring on the flange nut.

[0058] 4: A nylon gasket is provided between the lower mounting plate and the lower connecting plate. First, nylon has good wear resistance and can provide good protection for the contact surface; second, adding the nylon gasket can effectively reduce the friction between the lower mounting plate and the lower connecting plate, while reducing the impact on the compression spring of the lower connecting plate, thereby making it easier to rotate the rearview mirror mounting bracket.

[0059] 5: One end of the sleeve is welded to the connecting plate, and the compression spring is installed from the other end. The entire sleeve is located inside the sleeve and is not exposed on the outside. On the one hand, the sleeve can prevent the compression spring from radial movement during rotation, and on the other hand, it can protect the compression spring and extend the service life of the compression spring to a certain extent.

[0060] Compared with the prior art, the design of the present invention is not only simple, the parts are easy to process, but also the manufacturing cost is low, the installation is convenient and quick, and the structure is stable and reliable. When the rearview mirror mounting bracket needs to be adjusted, the rearview mirror mounting bracket is directly rotated manually, and the rearview mirror mounting bracket rotates around the center hole of the upper and lower connecting plates. The clamping rod fixed on the bracket moves out smoothly along the inclined surface of the V-shaped groove. At this time, the rearview mirror mounting bracket directly drives the flange bolt, and indirectly drives the flange nut and the flange bushing to move upward along the center axis of the connecting plate. The compression spring is gradually compressed until the bracket is completely rotated out of the V-shaped groove. When it rotates from one V-shaped groove to the next V-shaped groove, a movement cycle is completed. A V-shaped groove is designed on the top of the upper connecting plate of the present invention, and the lower connecting plate is designed to be a plane, which can ensure that the structure is more solid and the positioning is more precise.

[0061] The engineering vehicle provided by the present invention is described below. The engineering vehicle described below and the rearview mirror assembly described above can be referenced to each other.

[0062] An engineering vehicle provided by the present invention may include a rearview mirror assembly as described in any one of the above embodiments.

[0063] The beneficial effects achieved by the engineering vehicle provided by the present invention are consistent with the beneficial effects achieved by the rearview mirror assembly provided by the present invention, and will not be described in detail here.

[0064] It should be noted that the above-mentioned engineering vehicle may be a mining dump truck.

[0065] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0066] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present invention and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by this application.

[0067] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the present invention can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A foldable rearview mirror bracket, characterized in that: include: The rearview mirror mounting bracket has coaxial mounting holes at the upper and lower mounting ends; The upper connecting plate and the lower connecting plate have coaxial mounting holes and are distributed upward and downward and fixed on the supporting columns; a first connecting member, hingedly connecting the upper mounting end of the rearview mirror mounting bracket and the upper connecting plate in a manner with a pre-tightening force; The second connecting component hinges the lower mounting end of the rearview mirror mounting bracket and the lower connecting plate together in a pre-tightening manner; the rearview mirror mounting bracket is pushed by an external force so that it can rotate circumferentially around the hinge points arranged on the upper and lower coaxial lines; A positioning component is arranged between the first connecting component and the upper mounting end and / or between the second connecting component and the lower mounting end, and the positioning component is provided with two positioning fixing points which are 90 degrees apart; when the rearview mirror mounting bracket is rotated to one of the positioning fixing points, the rearview mirror mounting bracket is in an unfolded state; when the rearview mirror mounting bracket is rotated to the other positioning fixing point, the rearview mirror mounting bracket is in a folded state.

2. A foldable rearview mirror bracket according to claim 1, characterized in that: The first connecting component comprises: A sleeve is fixed to the bottom surface of the upper connecting plate in a coaxial manner with the mounting hole on the upper connecting plate; A compression spring, sleeved in the sleeve; A flanged bushing, in which a cylinder in the middle is inserted into the sleeve, and the cylinder can move axially in the sleeve, and the outer flange of the flanged bushing limits the inward axial movement of the cylinder, thereby controlling the compression amount of the compression spring; The connecting component is used to connect the upper mounting end of the rearview mirror mounting bracket, the upper connecting plate, the sleeve, the compression spring and the flanged bushing together, and can push the flanged bushing to compress the compression spring to generate an axial preload, thereby pressing the upper mounting end of the rearview mirror mounting bracket and the upper connecting plate together in the axial direction.

3. The foldable rearview mirror bracket according to claim 2, characterized in that: The connecting parts include flange bolts and flange nuts; The flange bolt passes through the upper mounting end of the rearview mirror mounting bracket, the upper connecting plate, the sleeve, the compression spring and the flanged bushing in sequence, and is finally pre-tightened by the flange nut; The flange nut is screwed into the portion where the flange bolt protrudes from the flange bushing. By rotating the flange nut, the flange nut is moved axially in a straight line, thereby pushing the flange bushing to compress the compression spring.

4. The foldable rearview mirror bracket according to claim 2, characterized in that: The positioning component comprises: A slot plate is fixed on the top surface of the upper connecting plate, wherein a through hole coaxially arranged with the sleeve is provided at the center of the slot plate, and a cross-shaped groove is extended from the through hole to the surrounding areas of the top surface of the slot plate; The two clamping rods are symmetrically fixed on the bottom surface of the upper mounting end in a straight line and are located on both sides of the mounting hole of the upper mounting end. The two clamping rods fall into a horizontal straight line groove or a vertical straight line groove to form a positioning and fixing point; the distance between the outer flange of the flange bushing and the bottom surface of the sleeve is not less than the depth of the clamping rod falling into the groove, so that the two clamping rods can be rotated out of the straight line groove.

5. The foldable rearview mirror bracket according to claim 4, characterized in that: When two clamping rods fall into the longitudinal linear grooves to form longitudinal positioning and fixing points, the rearview mirror mounting bracket is in the unfolded state. When two clamping rods fall into the transverse linear grooves to form transverse positioning and fixing points, the rearview mirror mounting bracket is in the folded state; Or, when two clamping rods fall into the transverse linear grooves to form transverse positioning and fixing points, the rearview mirror mounting bracket is in the unfolded state. When two clamping rods fall into the longitudinal linear grooves to form longitudinal positioning and fixing points, the rearview mirror mounting bracket is in the folded state.

6. The foldable rearview mirror bracket according to claim 4, characterized in that: The groove on the slot plate is a V-shaped groove, and the edge of the V-shaped groove is rounded. The cross-section of the clamping rod falling into the V-shaped groove is an arc surface.

7. The foldable rearview mirror bracket according to claim 1, characterized in that: The second connecting member includes: A sleeve, which is fixed to the bottom surface of the lower connecting plate in a coaxial manner with the mounting hole on the lower connecting plate; A compression spring, which is sleeved in the sleeve; A flanged bushing, the middle cylinder of which is inserted into the sleeve, and the cylinder can axially move in the sleeve, and the inward axial movement of the cylinder is limited by the outward flange of the flanged bushing, thereby controlling the compression amount of the compression spring; A connecting member, which is used to connect the lower mounting end of the rearview mirror mounting bracket, the lower connecting plate, the sleeve, the compression spring and the flanged bushing together, and can push the flanged bushing to compress the compression spring to generate an axial pre-tightening force, thereby pressing the lower mounting end of the rearview mirror mounting bracket and the lower connecting plate tightly together in the axial direction.

8. The foldable rearview mirror bracket according to claim 7, characterized in that: The connecting member includes a flange bolt and a flange nut; The flange bolt sequentially passes through the lower mounting end of the rearview mirror mounting bracket, the lower connecting plate, the sleeve, the compression spring and the flanged bushing, and is finally pre-tightened by the flange nut; The flange nut is screwed onto the part of the flange bolt extending out of the flanged bushing. By rotating the flange nut, the flange nut performs an axial linear movement, thereby pushing the flanged bushing to compress the compression spring.

9. The foldable rearview mirror bracket according to claim 7, characterized in that: A gasket made of wear-resistant material is installed between the lower mounting end of the rearview mirror mounting bracket and the lower connecting plate.

10. The foldable rearview mirror bracket according to claim 1, characterized in that: The rearview mirror mounting bracket as a whole has a "C" - shaped structure and is composed of a bent pipe, an upper mounting plate and a lower mounting plate; wherein, the upper mounting plate constitutes the upper mounting end, and the lower mounting plate constitutes the lower mounting end; An installation hole arranged coaxially is provided at the front part of both the upper mounting plate and the lower mounting plate. A slot extending forward is provided at the tail end of both the upper mounting plate and the lower mounting plate. The upper part of the bent pipe is inserted into the slot of the upper mounting plate and then welded together. The lower part of the bent pipe is inserted into the slot of the lower mounting plate and then welded together.

11. The foldable rearview mirror bracket according to claim 1, characterized in that: The upper connecting plate is an elliptical structure as a whole, and its front half covers the opening on the top surface of the supporting column and is welded thereto; the lower connecting plate is a circular plate structure with an arc-shaped notch as a whole, and is welded to the outer circumferential surface of the supporting column through the arc-shaped notch; the upper connecting plate and the lower connecting plate are both provided with a coaxially arranged mounting hole.

12. A rearview mirror assembly, characterized in that: include: Support columns; The foldable rearview mirror bracket according to any one of claims 1 to 11, wherein the foldable rearview mirror bracket is mounted on a supporting column; A rearview mirror is mounted on the rearview mirror mounting bracket.

13. An engineering vehicle, characterized in that: It comprises the foldable rearview mirror bracket according to any one of claims 1 to 11; or, it comprises the rearview mirror assembly according to claim 12.

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