Front cab tilt support for a truck

Abstract

A front cab roll-over support device of a truck can include a support bar connecting a vehicle body and a front cab, a support handle and a shackle provided to the support bar, and a locking mechanism provided to the support handle, wherein the locking mechanism includes a rotation handle rotatably coupled to the support handle via a handle shaft, and wherein a roll-over state of the front cab in which the support bar is linearly extended as the front cab is rotated in a predetermined direction is configured to be maintained by engagement between the locking mechanism and the shackle.

Description

Technical Field

[0001] This invention relates to a truck cab rollover support device, and more particularly to a technology for a truck cab rollover support device that can improve the convenience and safety of the cab during rollover. Background Technology

[0002] Typically, small and medium-sized trucks include: a front cab with a driver's seat and a front passenger seat; and a rear trailer for loading cargo; wherein the front cab is equipped with a tilting structure, for example, allowing a mechanic to rotate it forward when the vehicle needs to be repaired.

[0003] A rollover brace connecting the vehicle body and the front cab can maintain the cab's forward-rotating tilted position. In traditional rollover braces, a safety pin is inserted into the support rod after extending it in a straight line to prevent rotation and maintain the cab's tilted position. However, this method has drawbacks: reduced operability due to the difficulty of inserting the safety pin into the hole in the support rod, and in some cases, accidents frequently occur because mechanics omit inserting the safety pin.

[0004] The information disclosed in the background section of this invention is intended only to enhance the understanding of the general background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] Various aspects of the present invention aim to provide a front cab rollover bracing device configured to perform a front cab rollover bracing operation by a simple rotational operation of a rotating handle connected to a support handle, thereby improving safety and ease of operation.

[0006] In various aspects of the present invention, a truck cab rollover support device is provided, comprising: a support rod connecting the vehicle body and the cab; a support handle and a hook disposed on the support rod; and a locking mechanism disposed on the support handle, wherein the locking mechanism includes a rotating handle rotatably connected to the support handle via a handle shaft, wherein, in a rollover state of the cab where the support rod extends linearly as the cab rotates in a predetermined direction, the rollover state of the cab is configured to be maintained by engagement between the locking mechanism and the hook.

[0007] The support rod may include an upper support rod portion and a lower support rod portion rotatably connected to each other via a connecting pin. The upper support rod portion and the lower support rod portion are rotatably connected to the front cab and the vehicle body, respectively. The support handle may be rotatably connected to the upper support rod portion at a connection between the upper support rod portion and the lower support rod portion, and the hook is fixedly installed to the lower support rod portion.

[0008] With the upper support rod and the lower support rod extending in a straight line, the hook can be an "L"-shaped bracket that protrudes from one side of the lower support rod and then bends upward.

[0009] The support mechanism may include: a gear component and a rotating shaft connected to each other to sequentially transmit the rotational force of the handle; and a stop member coupled to one end of the rotating shaft to rotate with the rotating shaft, and configured to maintain the support handle locked to the lower support rod when the stop member engages with the hook, so that the support handle cannot rotate, and to switch to an unlocked state when the stop member disengages from the hook, so that the support handle can rotate.

[0010] The rotating handle can be rotatably connected via the handle shaft to extend at the end of the support handle along the longitudinal direction of the support handle.

[0011] When the stop member rotates at a 90-degree angle in one direction in the unlocked state where it is not engaged with the hook, causing the stop member to rotate and engage with the hook, the support handle can be changed to a locked state where the support handle cannot rotate. And when the rotating handle rotates at a 90-degree angle in the opposite direction in the locked state to return to its original position, causing the stop member to rotate and disengage from the hook, the support handle can be changed to an unlocked state where the support handle can rotate.

[0012] The contact surfaces of the support handle and the rotating handle can be respectively provided with a hemispherical groove and a hemispherical protrusion, so that when the rotating handle rotates, the rotation angle of the rotating handle relative to the support handle is determined by the protrusion inserting into the groove.

[0013] The flange portion can be further formed to protrude from the contact surface of the rotating handle in a right-angle direction, and a hemispherical protrusion can be provided on the contact surface of the flange portion.

[0014] The rotating handle may be marked with signs or text at 90-degree intervals to indicate the locked and unlocked states of the support handle.

[0015] According to the front cab rollover support device of the present invention, when the rotating handle connected to the support handle rotates, the stop engages / disengages with the hook ring provided on the lower support rod, so that the support handle switches between a locked state and an unlocked state. At the same time, the effect of rollover support of the front cab is achieved by simply rotating the rotating handle, which improves the convenience and safety of operation.

[0016] By incorporating the figures in this article and subsequently the accompanying figures Figure 1 The specific descriptions used to illustrate certain principles of the invention will make other features and advantages of the methods and apparatus of the invention clearer or more apparent. Attached Figure Description

[0017] Figure 1 This is an exemplary view showing the tilted state of the front cab, which is rotated forward by a front cab tilting support device according to various exemplary embodiments of the present invention;

[0018] Figure 2 This is an example showing from Figure 1 A view of the support rod extending along a straight line;

[0019] Figure 3 This is an exemplary view showing the support rods folded when the cab is tilted downwards;

[0020] Figure 4 This is an exemplary view showing the unlocked state of the overturning support device according to various exemplary embodiments of the present invention, in which the stop is not engaged with the hook.

[0021] Figure 5 This is an example shown Figure 4 A view of the part connected to the rotating handle;

[0022] Figure 6 This is an example shown Figure 4 A view of the rotating handle as it rotates clockwise;

[0023] Figure 7 This is an example shown Figure 6 A view of the part connected to the rotating handle;

[0024] Figure 8 This is an example shown Figure 4 A view showing the locked state of the stop engaging the hook ring when the rotating handle is rotated 90 degrees clockwise.

[0025] Figure 9 yes Figure 8 Side view; and

[0026] Figure 10 This is an example shown Figure 8 A view of the part connected to the rotating handle.

[0027] It should be understood that the accompanying drawings are not drawn to scale and show slightly simplified depictions of various features illustrating the basic principles of the invention. Specific design features of the invention disclosed herein (including, for example, specific dimensions, orientations, positions, and shapes) will be determined in part by the specific environment in which they are intended to be applied and used.

[0028] Throughout these figures, and in multiple figures in the accompanying drawings, reference numerals refer to the same or equivalent parts of the invention. Detailed Implementation

[0029] Reference will now be made in detail to various embodiments of the invention, examples of which are shown in the accompanying drawings and described below. Although the invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents, and other embodiments that may be included within the spirit and scope of the invention as defined by the appended claims.

[0030] The specific structural or functional descriptions of exemplary embodiments of the invention included herein are merely exemplary and are intended to illustrate exemplary embodiments of various exemplary embodiments of the invention. These exemplary embodiments of the invention are implemented in various forms and are to be understood as not being limited to the exemplary embodiments described in the various exemplary embodiments of the invention or application.

[0031] Since the exemplary embodiments of the present invention can be modified in various ways, specific embodiments will be shown and described in detail in the accompanying drawings and the description of the invention. However, this is not intended to limit the exemplary embodiments of the concepts according to the present invention to the specific forms disclosed, but rather to be understood to include all modifications, equivalents, or substitutions that are included within the spirit and scope of the invention.

[0032] It should be understood that while the terms "first," "second," etc., may be used herein to describe various elements, the elements are not limited by these terms. These terms are used only to distinguish one element from another. For example, the first element discussed below may be referred to as the second element without departing from the teachings of the invention.

[0033] It should be understood that when an element is referred to as "connected" or "attached" to another element, it can be directly connected to or attached to the other element, or there can be an intervening element between them. Conversely, when an element is referred to as "directly connected" to another element, there is no intervening element. Other expressions describing relationships between components can also be interpreted in the same way, such as "between" and "directly between," or "adjacent" and "directly adjacent."

[0034] The terminology used herein is for the purpose of describing various exemplary embodiments only and is not intended to limit the invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, values, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, values, steps, operations, elements, components, and / or groups thereof.

[0035] Unless otherwise stated, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms as defined in common dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant technology and this invention, and should not be construed as having an ideal or overly formal meaning unless clearly defined herein.

[0036] The front cab rollover support device according to various exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0037] like Figure 1 As shown, the small and medium-sized truck includes: a front cab 1, which is equipped with a driver's seat and a passenger seat; and a rear trailer 2, which is a space for loading cargo; wherein, the front cab 1 is provided with a tilting structure, for example, it can be rotated forward by a mechanic when the vehicle needs to be repaired.

[0038] Figure 1 This is an exemplary view showing the overturned state of the front cab 1 rotated forward. Figure 2 This is an exemplary view showing a support rod 100 extending along a straight line. Figure 3 This is an exemplary view showing the state in which the support rod 100 is folded when the current cab 1 tilts downwards.

[0039] Maintaining the tilted state of the front cab 1 rotating forward may include a tilting support device 4 connecting the vehicle body 3 and the front cab 1.

[0040] like Figures 1 to 10As shown, a truck cab rollover support device 4 according to an exemplary embodiment of the present invention includes a support rod 100, a support handle 200 and a hook 300, and a locking mechanism 400. The support rod 100 connects the vehicle body 3 and the cab 1. The support handle 200 and the hook 300 are disposed on the support rod 100. The locking mechanism 400 is disposed on the support handle 200, such that when the cab 1 rotates forward and the rod 100 extends in a straight line, the rollover state of the cab 1 is maintained by the engagement between the locking mechanism 400 and the hook 300.

[0041] The support rod 100 includes an upper support rod portion 110 and a lower support rod portion 120.

[0042] The bracket 111 is fixedly connected to the front cab 1, and the upper part of the upper support rod 110 is rotatably connected to the bracket 111 via the first pin 112. The bracket 121 is fixedly connected to the vehicle body 3 below the front cab 1, and the lower part of the lower support rod 120 is rotatably connected to the bracket 121 via the second pin 122.

[0043] The lower part of the upper support rod 110 and the upper part of the lower support rod 120 are assembled overlapping each other, and the connecting pin 130 is connected to the overlapping part, so that the upper support rod 110 and the lower support rod 120 are connected to each other in a structure that is rotatable about the connecting pin 130.

[0044] In an exemplary embodiment of the present invention, the lower support rod portion 120 may include a groove 125, and the handle pin 210 of the upper support rod portion 110 and the groove 125 of the lower support rod portion 120 are connected to each other in a rotatable structure around the connecting pin 130.

[0045] The support handle 200 is rotatably connected to the upper support rod 110 via a handle pin 210 at the connection between the upper support rod 110 and the lower support rod 120, and the hook 300 is fixedly provided on the lower support rod 120.

[0046] The hook 300 is formed as an "L"-shaped bracket protruding in one direction, and bends upward while the upper support rod 110 and the lower support rod 120 extend in a straight line, and the hook 300 can be fixedly welded to the lower support rod 120.

[0047] The locking mechanism 400 includes a rotating handle 420, a gear member 430, a rotating shaft 440, and a stop 450. The rotating handle 420 is rotatably connected to the support handle 200 via a handle shaft 410. The gear member 430 and the rotating shaft 440 are connected to sequentially transmit the rotational force of the handle shaft 410. The stop 450 is connected to the rotating shaft 440 to rotate with the rotating shaft, thereby obtaining a locked state in which the support handle 200 cannot rotate when engaged with the hook 300 during the rotation of the rotating shaft 440, and an unlocked state in which the support handle 200 can rotate about the handle pin 210 when the stop disengages from the hook 300.

[0048] The rotating handle 420 is rotatably connected via the handle shaft 410 to extend at the end of the support handle 200 along the longitudinal direction of the support handle 200, so as to facilitate operation by the operator.

[0049] The shank 410 and the rotating shaft 440 extend along the longitudinal direction of the support shank 200. The shank 410 and the rotating shaft 440 are mounted at a predetermined angle along the shape of the support shank 200. The shank 410 and the rotating shaft 440 are connected to allow power transmission via a gear member 430. The gear member 430 is preferably, but not limited to, a bevel gear, configured to transmit power to the shank 410 and the rotating shaft 440 at an obtuse angle.

[0050] The stop 450 is an L-shaped bracket, one end of which is connected to the rotating shaft 440 to rotate together with the rotating shaft 440, and when the rotating shaft 440 rotates, the other end of the stop 450 rotates toward the hook 300 to engage with or disengage from the hook 300.

[0051] That is, from such Figure 4 The stop 450 shown is in the unlocked state, disengaged from the hook 300. When the stop 450 is in the unlocked state... Figure 8 When the stop 450 rotates at a 90-degree angle in one direction, it rotates and switches to a locked state where the stop 450 engages with the hook 300, so that the support handle 200 cannot rotate.

[0052] Therefore, when the rotating handle 420 rotates 90 degrees in the opposite direction and from Figure 8 The locked state returns to Figure 4 When in the state, the stop 450 rotates and disengages from the hook 300, causing the support handle 200 to switch to the unlocked state where the support handle can rotate.

[0053] On the other hand, the contact surfaces of the support handle 200 and the rotating handle 420 are respectively provided with a hemispherical groove 220 and a hemispherical protrusion 460, such that during the rotation of the rotating handle 420, the protrusion 460 is inserted into the groove 220 to determine the rotation angle of the rotating handle 420.

[0054] On the other hand, unlike the above-described embodiments, the contact surface of the support handle 200 is provided with a hemispherical protrusion, while the contact surface of the rotating handle 420 is provided with a hemispherical groove.

[0055] The contact surface at the front end of the support handle 200 is straight, and two grooves 220 are formed at 180-degree intervals on the straight contact surface. Furthermore, the contact surface of the rotating handle 420 is also straight, and two protrusions 460 are formed at 180-degree intervals on the straight contact surface. A flange 470 is further formed to protrude orthogonally from the contact surface of the rotating handle 420, and hemispherical protrusions 460 are further provided on the contact surface of the flange 470.

[0056] A total of three protrusions 460 are arranged at 90-degree intervals on the rotating handle 420.

[0057] Therefore, when Figures 4 to 5 As shown, when the two protrusions 460 are inserted into the two grooves 220, restricting the rotation of the rotating handle 420, the support handle 200 switches to the unlocked state where the support handle can be rotated.

[0058] When the rotating handle 420 is rotated clockwise at a 90-degree angle from the unlocked state as described above, as Figure 8 , Figure 9 as well as Figure 10 As shown, only one protrusion 460 in the flange portion 470 is inserted into the groove 220, which restricts the rotation of the rotating handle 420, thereby switching to a locked state in which the support handle 200 cannot rotate.

[0059] Furthermore, when the rotating handle 420 rotates counterclockwise at a 90-degree angle from the locked state and returns to the position as shown... Figures 4 to 5 When in the original position shown, the two protrusions 460 are inserted into the two grooves 220 again, which restricts the rotation of the rotating handle 420, thereby switching back to the unlocked state where the support handle 200 can rotate.

[0060] In the rotating handle 420, there are signs or text 480 (icons) at 90-degree intervals to indicate the locked and unlocked states of the support handle 200. The operator can visually know the locked or unlocked state of the support handle 200 by means of the signs or text 480.

[0061] As described above, according to the exemplary embodiment in which the stop 450 engages with or disengages from the hook 300 when the rotating handle 420 connected to the support handle 200 rotates, when the stop 450 engages with the hook 300, the support handle 200 switches to a locked state in which the support handle cannot rotate, thereby maintaining the tilted state of the front cab 1 rotating forward, and when the stop 450 disengages from the hook 300, the support handle 200 switches to a rotatable unlocked state, thereby allowing the forward-rotating front cab 1 to rotate back to its original position.

[0062] Therefore, the front cab rollover support device according to various exemplary embodiments of the present invention is configured to allow the rollover support operation of the front cab 1 to be realized by a simple rotational operation of the rotating handle 420 connected to the support handle 200, which helps to improve the convenience and safety of operation.

[0063] For ease of interpretation and precise definition of the appended claims, the terms “above,” “below,” “inner,” “outer,” “upper,” “lower,” “upward,” “downward,” “front,” “back,” “back,” “inner side,” “outer side,” “inward,” “outer,” “internal,” “external,” “forward,” and “backward” are used with reference to the positions of these features shown in the accompanying drawings to describe features of the exemplary embodiments. It will be further understood that the term “connection” or its derivatives refer to both direct and indirect connections.

[0064] The foregoing description of specific exemplary embodiments of the invention is for illustrative and descriptive purposes. It is not intended to be exhaustive, nor to limit the invention to the precise forms disclosed; obviously, many changes and variations are possible in light of the foregoing teachings. The exemplary embodiments were chosen and described to explain the specific principles of the invention and its practical application, thereby enabling others skilled in the art to implement and utilize various exemplary embodiments of the invention, as well as their different alternatives and modifications. The scope of the invention is intended to be defined by the appended claims and their equivalents.

Claims

1. A vehicle front cab rollover support device, comprising: Support rod, which connects the vehicle body and the front cab; A support handle and a hook are provided on the support rod; as well as A locking mechanism is provided on the support handle; The locking mechanism includes a rotating handle, which is rotatably connected to the support handle via a handle shaft; In a tilted state where the front cab rotates in a predetermined direction and the support rod extends, the tilted state of the front cab is configured to be maintained by the engagement between the locking mechanism and the hook. The locking mechanism further includes: A gear assembly and a rotating shaft connected to each other, wherein the shank is engaged with the gear assembly to sequentially transmit the rotational force of the shank to the rotating shaft via the gear assembly, wherein the rotating shaft and the shank are rotatably mounted in the support shank; and A stop member is fixed to the first end of the rotating shaft to rotate together with the rotating shaft.

2. The vehicle front cab tilting support device according to claim 1, wherein: The support rod includes an upper support rod portion and a lower support rod portion that are rotatably connected to each other via a connecting pin. The upper support rod portion is rotatably connected to the front cab, and the lower support rod portion is rotatably connected to the vehicle body. The support handle is rotatably mounted to the upper support rod, and the hook is fixedly mounted to the lower support rod.

3. The vehicle front cab tilting support device according to claim 2, wherein, The hook is an "L"-shaped bracket that protrudes from the lower support rod and then bends along the longitudinal direction of the lower support rod.

4. The vehicle front cab tilting support device according to claim 2, wherein: The upper support rod includes a handle pin connected to the support handle; The lower support rod includes a groove, and the shank pin of the upper support rod selectively engages with the groove according to the rotation of the upper support rod and the lower support rod.

5. The vehicle front cab tilting support device according to claim 1, wherein: The second end of the rotating shaft is engaged to the first end of the shank shaft via the gear component; The second end of the handle shaft is fixedly connected to the rotating handle.

6. The vehicle front cab tilting support device according to claim 5, wherein: The gear component includes a first bevel gear and a second bevel gear; The second end of the rotating shaft includes the first bevel gear, and the first end of the shank includes the second bevel gear that meshes with the first bevel gear.

7. The vehicle front cab tilting support device according to claim 1, wherein, When the stop is engaged with the hook, the support handle remains locked to the lower support rod, thus preventing rotation of the support handle. When the stop disengages from the hook, the stop switches to the unlocked state, allowing the support handle to rotate relative to the lower support rod.

8. The vehicle front cab tilting support device according to claim 1, wherein, The rotating handle is rotatably connected to the support handle via a handle shaft, so as to extend at the end of the support handle along the longitudinal direction of the support handle.

9. The vehicle front cab tilting support device according to claim 1, wherein: When the stop member rotates at a predetermined angle along the first direction in the unlocked state where the stop member is not engaged with the hook ring, causing the stop member to rotate and engage with the hook ring, the support handle becomes a locked state where the rotation of the support handle is prohibited. When the rotating handle is in the locked state and rotates at a predetermined angle along a second direction opposite to the first direction to return to its original position, causing the stop to rotate and disengage from the hook, the support handle becomes in the unlocked state where the support handle can rotate.

10. The vehicle front cab tilting support device according to claim 9, wherein, The predetermined angle is 90 degrees.

11. The vehicle front cab tilting support device according to claim 1, wherein, One of the support handle and the rotating handle is provided with at least one hemispherical groove, and the other of the support handle and the rotating handle is provided with at least one hemispherical protrusion, such that when the rotating handle rotates, the rotation angle of the rotating handle relative to the support handle is determined by the engagement of at least one hemispherical protrusion with at least one hemispherical groove.

12. The vehicle front cab tilting support device according to claim 11, wherein: The rotating handle includes a flange portion protruding from the surface of the rotating handle; The end of the flange includes a hemispherical groove or a hemispherical protrusion for selective engagement with one of at least one hemispherical groove or at least one hemispherical protrusion.

13. The vehicle front cab tilting support device according to claim 11, in, The flange is further formed to protrude from the surface of the rotating handle in a right-angle direction, and hemispherical protrusions are disposed on the surface of the flange to selectively engage with at least one hemispherical groove.

14. The vehicle front cab tilting support device according to claim 1, wherein, The rotating handle is marked with signs or text at predetermined angular intervals to indicate the locked and unlocked states of the support handle.

15. The vehicle front cab rollover support device according to claim 14, wherein, The predetermined angle is 90 degrees.

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