Forklift and forklift rear window opening angle adjustable device

Abstract

The utility model provides a forklift and forklift rear window opening angle adjustable device, which comprises an operating mechanism and an adjusting mechanism, the adjusting mechanism comprises a ratchet wheel part and a pawl part, one of the ratchet wheel part and the pawl part is arranged on an overhead guard, and the other one is arranged on a rear window. The ratchet wheel part is provided with at least one first fixed matching part, the pawl part comprises a pawl, and the pawl is arranged in a hinged mode and provided with a second fixed matching part; the fixed matching of the second fixed matching part and the first fixed matching part at least enables the opening angle of the rear window to be larger than 0 degree and smaller than the maximum opening angle under the action of the elastic element. And the operating mechanism is in driving connection with the pawl so as to drive the second fixed matching part of the pawl to be separated from the first fixed matching part. The multi-gear opening function of the rear window is achieved, and different requirements are met.

Description

Technical Field

[0001] The utility model relates to the field of forklifts, in particular to a forklift and a device for adjusting the opening angle of a rear window of the forklift. Background Art

[0002] Forklifts are industrial handling vehicles, which refer to various wheeled handling vehicles for loading and unloading, stacking and short-distance transportation of palletized goods. The fully enclosed rear window of the counterbalanced forklift is set to openable. The main purposes are: 1. When replacing the battery, the rear window is opened to avoid the open hood and seat; 2. In the event of an accident, such as the forklift tipping over, the rear window can be opened as an escape window.

[0003] At present, the rear window is installed on the overhead guard through elastic elements (such as gas springs), and has only one opening angle, which is the maximum angle when the gas spring is lifted. If the driver wants to use the rear window to obtain ventilation, if the rear window is opened at this angle, on the one hand, the opened rear window will exceed the outline of the vehicle body, causing the vehicle to increase the turning radius during the journey; on the other hand, the angle of the rear window fully opened is too large, resulting in too much ventilation, which is not suitable for some drivers with special physiques. Utility Model Content

[0004] Therefore, in order to solve the above problems, the utility model provides a forklift and a forklift rear window opening angle adjustable device, which can fix the rear window at a position smaller than the maximum opening angle under the action of an elastic element to meet the window opening range under different circumstances.

[0005] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0006] A device for adjusting the opening angle of a forklift rear window, wherein the rear window is hinged on an overhead guard of the forklift and connected via an elastic element; wherein the device for adjusting the opening angle of the forklift rear window comprises an operating mechanism and an adjusting mechanism, wherein the adjusting mechanism comprises a ratchet part and a pawl part, wherein one of the ratchet part and the pawl part is mounted on the overhead guard, and the other is mounted on the rear window, wherein the ratchet part has at least one first fixed fitting portion, wherein the pawl part comprises a pawl, wherein the pawl is hingedly arranged and has a second fixed fitting portion; wherein the fixed fitting of the second fixed fitting portion with the first fixed fitting portion at least makes the opening angle of the rear window greater than 0° and less than the maximum opening angle under the action of the elastic element; wherein the operating mechanism drives and connects the pawl to drive the second fixed fitting portion of the pawl to disengage from the first fixed fitting portion.

[0007] Furthermore, the pawl part also includes a reset member, and the pawl is close to the ratchet part under the action of the reset member, so that the second fixed fitting portion and the first fixed fitting portion form a fixed fit.

[0008] Furthermore, the pawl part also includes a mounting frame, the mounting frame is fixed on the roof guard or the rear window, and the pawl is movably assembled on the mounting frame.

[0009] Furthermore, the mounting frame is connected to the ratchet portion via a connecting shaft to form a hinge structure, and the hinge structure also serves as a hinge connector for mounting the rear window.

[0010] Furthermore, the ratchet part includes a fixed plate and a fan-shaped plate connected to the fixed plate and perpendicular to the fixed plate, the fixed plate is fixed on the overhead guard frame or the rear window, the fan-shaped plate extends outward to correspond to the pawl, and the first fixed matching portion is formed on the arc-shaped outer end surface of the fan-shaped plate.

[0011] Furthermore, the number of the first fixed fitting parts is two, and when the second fixed fitting part of the pawl is fitted on the first first fixed fitting part, the opening angle of the rear window is 0°; when the second fixed fitting part of the pawl is fitted on the second first fixed fitting part, the opening angle of the rear window is greater than 0° and less than the maximum opening angle under the action of the elastic element, and the rear window does not exceed the body contour of the forklift.

[0012] Furthermore, the first fixed fitting portion is a recessed notch, and the second fixed fitting portion is a raised tooth portion.

[0013] Furthermore, the operating mechanism is arranged on the inner side of the rear window; the operating mechanism includes a driving part and a connecting line, and the two ends of the connecting line are respectively connected to the driving part and the pawl; the action of the driving part pulls the pawl through the connecting line to drive the pawl to swing in a direction away from the ratchet part, thereby driving the second fixed fitting part of the pawl to disengage from the first fixed fitting part.

[0014] Furthermore, the driving part includes a rotating shaft, a cam and a handle, the handle is installed at the first end of the rotating shaft, the cam is installed at the second end of the rotating shaft and has an eccentric shaft, and the connecting line is connected to the eccentric shaft of the cam.

[0015] A forklift, comprising an overhead guard and a rear window hinged on the overhead guard; wherein, a forklift rear window opening angle adjustable device as described above is also provided between the rear window and the overhead guard, and the rear window can be fixed within a range where the opening angle is at least greater than 0° and less than the maximum opening angle under the action of an elastic element through the forklift rear window opening angle adjustable device.

[0016] The technical solution provided by the utility model has the following beneficial effects:

[0017] The solution provided in the present application can at least enable the rear window to be opened at another angle within a range smaller than the maximum opening angle under the action of the elastic element, thereby realizing a multi-speed opening function to meet different needs. For example, when the gear does not exceed the contour of the vehicle body, it can also be used for ventilation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure shows a partial structure diagram of a forklift in the first embodiment. Figure 1 , in this state, the rear window is closed;

[0019] Figure 2 Shown Figure 1 A magnified schematic diagram of the middle A area;

[0020] Figure 3 The figure shows a partial structure diagram of a forklift in the first embodiment. Figure 2 ;

[0021] Figure 4 Shown Figure 3 A magnified schematic diagram of the middle B area;

[0022] Figure 5 The figure shows a schematic diagram of the matching structure of the adjustment mechanism of the rear window in the opening process in the first embodiment; in this state, the tooth portion is not inserted into the notch;

[0023] Figure 6 The figure shows a schematic diagram of the matching structure of the adjustment mechanism of the rear window in the opening process in the first embodiment; in this state, the tooth portion is inserted into the second notch;

[0024] Figure 7 The figure shows the open state of the rear window when the tooth portion is inserted into the second notch in the first embodiment;

[0025] Figure 8 It is a schematic diagram of the coordination structure of the adjustment mechanism of the rear window in the fully opened state in the first embodiment;

[0026] Fig. 9 The figure is a schematic diagram of the structure of the rear window in the fully opened state in the first embodiment;

[0027] Fig.10 Shown is a schematic structural diagram of the ratchet part in the first embodiment;

[0028] Fig.11 The figure shows a schematic structural diagram of the ratchet in the first embodiment. DETAILED DESCRIPTION

[0029] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0030] In the description of the present invention, terms such as "up", "down", "left", "right", "front", "back", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, 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 of the present invention.

[0031] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0032] Embodiment 1

[0033] Reference Figures 1 to 11 As shown, a forklift provided in this embodiment includes an overhead guard frame 1 and a rear window 2 hinged on the overhead guard frame 1; specifically, the top of the rear window 2 is hinged on the overhead guard frame 1 of the cab, and the rear window 2 and the overhead guard frame 1 are connected by an elastic element (such as a gas spring 3 in this embodiment, of course, other elements such as a torsion spring, a spring, etc.) When opening, the gas spring 3 is pushed out to open to the maximum opening angle; Fig. 9 As shown, in this embodiment, the maximum opening angle opened by the gas spring 3 is 35°, and at this time the rear window 2 exceeds the line a of the vehicle body contour.

[0034] Continue to refer to Figures 1 to 11 As shown, this embodiment also provides a forklift rear window opening angle adjustable device, which is arranged between the rear window 2 and the overhead guard 1 in the forklift. Specifically, the forklift rear window opening angle adjustable device includes an operating mechanism 10 and an adjusting mechanism, and the adjusting mechanism includes a ratchet part 20 and a pawl part 30, one of the ratchet part 20 and the pawl part 30 is installed on the overhead guard 1, and the other is installed on the rear window 2. For example, in this embodiment, the ratchet part 20 is installed on the overhead guard 1, and the pawl part 30 is installed on the rear window 2. The ratchet part 20 has at least one first fixed matching part, specifically, the first fixed matching part is a concave notch 23, the number is two, and is defined as a first notch 231 and a second notch 232 respectively. The pawl part 30 includes a pawl 31, the pawl 31 is hinged and has a second fixed matching part, specifically, the second fixed matching part is a raised tooth part 311, the number is one.

[0035] The fixed cooperation of the second fixed cooperation portion and the first fixed cooperation portion at least makes the opening angle of the rear window 2 greater than 0° and less than the maximum opening angle under the action of the gas spring 3; Figure 1 , Figure 2 As shown, in this embodiment, when the tooth portion 311 is inserted into the first notch 231 to form a fixed fit, the opening angle of the rear window 2 is 0°, that is, the rear window 2 is in a closed state. When the tooth portion 311 is inserted into the second notch 232 to form a fixed fit, the opening angle of the rear window 2 is greater than 0° and less than the maximum opening angle of 35° under the action of the gas spring 3. Figure 6 and Figure 7 As shown, in this embodiment, when the tooth portion 311 is inserted into the second notch 232 to form a fixed fit, the opening angle of the rear window 2 is 20°, and at this angle, the rear window 2 does not exceed the line a of the body contour of the forklift.

[0036] The operating mechanism 10 drives and connects the pawl 31 to drive the second fixed matching portion of the pawl 31 to disengage from the first fixed matching portion. For example, when the rear window 2 is in a closed state, the tooth portion 311 is inserted into the first notch 231 to achieve fixed matching. When the rear window 2 needs to be opened, the operating mechanism 10 can be operated to drive the pawl 31 to swing away from the ratchet portion 20, so that the tooth portion 311 disengages from the first notch 231. After that, the rear window 2 continues to open outwards under the action of the gas spring. During the opening process, the state of the adjustment mechanism is as follows: Figure 5 As shown, the tooth portion 311 transitions between the first notch 231 and the second notch 232. As the rear window 2 continues to open, the tooth portion 311 is inserted into the second notch 232 to achieve a fixed fit. Figure 6 As shown, at this time, the opening angle of the rear window 2 is 20°. When the operating mechanism 10 is operated to drive the pawl 31 to swing away from the ratchet wheel portion 20 again, so that the tooth portion 311 is disengaged from the second notch 232, the rear window 2 continues to open outward to the maximum angle (i.e., 35°) under the action of the gas spring 3, so that the rear window 2 is fully opened.

[0037] The solution provided in the present application can at least enable the rear window 2 to be opened at another angle within a range smaller than the maximum opening angle under the action of the gas spring 3, thereby realizing a multi-speed opening function to meet different needs. For example, when the rear window 2 is opened 20°, it does not exceed the line a of the vehicle body contour and can be used for ventilation.

[0038] At the same time, when the rear window 2 is in a closed state, the forklift rear window opening angle adjustable device is also used for fixing, which can save other fixing structures.

[0039] The rear window 2 is pushed out by the gas spring 3 and opened to a maximum opening angle of 35°. When the tooth portion 311 is inserted into the second notch 232, the opening angle of the rear window 2 is 20°. The setting of the angle can be selected according to actual conditions and is not limited here.

[0040] Furthermore, the pawl part 30 further includes a reset member 32, and the pawl 31 approaches the ratchet part 20 under the action of the reset member 32, so that the tooth portion 311 automatically inserts into the notch 23 to form a fixed fit. That is, when the operating mechanism 10 removes the force acting on the pawl 31, the pawl 31 swings toward the ratchet part 20 under the action of the reset member 32, and when one of the notches 23 corresponds to the tooth portion 311, the tooth portion 311 will be inserted into the corresponding notch 23 under the action of the reset member 32 to achieve a fixed fit, and there is no need to manually control the fixation of the pawl 31 and the ratchet part 20.

[0041] Specifically, the reset member 32 is a reset torsion spring 321, which is sleeved on the hinge shaft 34 of the pawl 31 and applies a torsion force to the pawl 31 toward the ratchet part 20. The reset torsion spring 321 has a simple structure, does not take up space for assembly, does not interfere with other components, and the reset action is stable. Of course, the reset member 32 can also be other components such as tension springs, springs, etc. that can reset the pawl 31; or the reset member 32 is not used, and the action of the pawl 31 is completely controlled by the operating mechanism 10.

[0042] The pawl part 30 further includes a mounting frame 33 , which is fixed on the rear window 2 , and the pawl 31 is hinged on the mounting frame 33 ; the structure of the mounting frame 33 is adopted to facilitate the assembly of the pawl 31 .

[0043] The ratchet part 20 includes a fixing plate 21 and a sector plate 22 connected to the fixing plate 21 and perpendicular to the fixing plate 21, the fixing plate 21 is fixed on the overhead guard frame 1, the sector plate 22 extends outward to correspond to the ratchet 31, and the notch 23 is formed on the arc-shaped outer end surface of the sector plate 22. In this way, the structure is simple, and can simultaneously meet the requirements of being fixed on the overhead guard frame 1 and matching the ratchet 31.

[0044] Specifically, the mounting frame 33 is connected to the fixing plate 21 of the ratchet part 20 via a connecting shaft 40, thereby forming a hinge structure, and the hinge structure also serves as a hinge connector for installing the rear window 2; as in the present embodiment, the rear window 2 is hinged to the overhead guard frame 1 via two hinges, one of which is a common hinge on the market, and the other is a hinge structure composed of the mounting frame 33, the fixing plate 21 of the ratchet part 20 and the connecting shaft 40, which not only meets the installation requirements of the ratchet part 20 and the pawl part 30, but is also used for the hinged assembly of the rear window 2, and the design is ingenious.

[0045] Specifically, the operating mechanism 10 is arranged on the inner side of the rear window 2, which is convenient for the operator in the cab to operate; at the same time, the adjustment mechanism is arranged on the outer side of the cab, which does not occupy additional space in the cab and is easier to assemble.

[0046] The operating mechanism 10 includes a driving part and a connecting line 11, and the two ends of the connecting line 11 are respectively connected to the driving part and the pawl 31; the action of the driving part pulls the pawl 31 through the connecting line 11 to drive the pawl 31 to swing away from the ratchet part 20, thereby driving the second fixed matching part of the pawl 31 to disengage from the first fixed matching part. Specifically, the connecting line 11 adopts a brake line, and the principle is similar to the transmission of a bicycle brake line. With this arrangement, the operating mechanism 10 can be freely set within a certain range, as long as it can ensure that the pawl 31 can be pulled by the connecting line 11.

[0047] Specifically, Figure 4 As shown, the driving part includes a rotating shaft 12, a cam 14 and a handle 13. In this embodiment, a bracket 5 is fixed on the rear window 2, the rotating shaft 12 is rotatably mounted on the bracket 5, the handle 13 is mounted on the first end of the rotating shaft 12, the cam 14 is mounted on the second end of the rotating shaft 12 and has an eccentric shaft, and the connecting line 11 is connected to the eccentric shaft of the cam 14. When the pawl 31 needs to be pulled, the operator acts on the handle 13, and drives the rotating shaft 12 to rotate by pulling the handle 13. The rotation of the rotating shaft 12 pulls the connecting line 11 through the cam 14, and then pulls the pawl 31 to swing in the direction away from the ratchet part 20. After the handle 13 is released, the driving part removes the pulling force on the pawl 31, and the pawl 31 is reset under the action of the reset member 32. The driving part based on the cam 15 is adopted, and the structural design is simple and easy to implement. Of course, in other embodiments, the structure of the driving part is not limited to this, such as it can also be directly replaced by a pulling handle.

[0048] Embodiment 2

[0049] The embodiment provides a forklift rear window opening angle adjustable device, which has a structure substantially similar to that of the first embodiment, except that: in the embodiment, the number of the first fixed matching portion of the ratchet portion 20 is one, such as only the second notch 232 in the first embodiment, and when the rear window 2 is in the closed state, fixation is achieved by other locking structures.

[0050] Embodiment 3

[0051] The present embodiment provides a forklift rear window opening angle adjustable device, which has a substantially similar structure to the first embodiment, except that: in the present embodiment, the number of the first fixing mating parts of the ratchet portion 20 is three, that is, on the basis of the first notch 231 and the second notch 232 disclosed in the first embodiment, a third notch can be additionally provided, and the third notch can be located between the first notch 231 and the second notch 232, so that the rear window 2 can be further fixed between 0° and 20° (such as fixed at an opening angle of 12°, etc.); or it can be arranged behind the second notch 232, so that the rear window 2 can be further fixed between 20° and 35° (such as fixed at an opening angle of 24°, etc.).

[0052] Of course, in other embodiments, the number of the first fixed matching portions may be more than three, so that the rear window 2 can be switched between more opening angles.

[0053] Embodiment 4

[0054] The present embodiment provides a forklift rear window opening angle adjustable device, which has a substantially similar structure to the first embodiment, except that: in the present embodiment, the positions of the notch 23 and the tooth portion 311 are interchanged, that is, the first fixed matching portion is a raised tooth portion 311, and the second fixed matching portion is a recessed notch 23. Of course, in other embodiments, the matching of the first fixed matching portion and the second fixed matching portion is not limited to the matching of the notch 23 and the tooth portion 311, but may also be the matching of the latch pin and the latch pin hole, etc.

[0055] Embodiment 5

[0056] The present embodiment provides a forklift rear window opening angle adjustable device, which has a substantially similar structure to the first embodiment, except that: in the present embodiment, the mounting positions of the ratchet portion 20 and the pawl portion 30 are interchanged, that is, the ratchet portion 20 is mounted on the rear window 2, and the pawl portion 30 is mounted on the overhead guard 1.

[0057] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A device for adjusting the opening angle of a forklift rear window, wherein the rear window is hinged to the overhead guard of the forklift and connected via an elastic element; the characteristics are: It comprises an operating mechanism and an adjusting mechanism, wherein the adjusting mechanism comprises a ratchet part and a pawl part, wherein one of the ratchet part and the pawl part is mounted on the overhead guard frame, and the other is mounted on the rear window, wherein the ratchet part has at least one first fixed fitting portion, and the pawl part comprises a pawl, wherein the pawl is hingedly arranged and has a second fixed fitting portion; the fixed fitting of the second fixed fitting portion and the first fixed fitting portion at least makes the opening angle of the rear window greater than 0° and less than the maximum opening angle under the action of the elastic element; and the operating mechanism drives the pawl to be connected so as to drive the second fixed fitting portion of the pawl to disengage from the first fixed fitting portion.

2. The forklift rear window opening angle adjustable device according to claim 1, characterized in that: The pawl part also includes a reset member, and the pawl is close to the ratchet part under the action of the reset member, so that the second fixed matching portion and the first fixed matching portion form a fixed match.

3. The forklift rear window opening angle adjustable device according to claim 1 or 2, characterized in that: The pawl part also includes a mounting frame, which is fixed on the roof guard or the rear window, and the pawl is hinged on the mounting frame.

4. The forklift rear window opening angle adjustable device according to claim 3, characterized in that: The mounting frame is connected to the ratchet part via a connecting shaft, thereby forming a hinge structure, and the hinge structure also serves as a hinge connection piece for installing the rear window.

5. The forklift rear window opening angle adjustable device according to claim 1, characterized in that: The ratchet part includes a fixed plate and a fan-shaped plate connected to the fixed plate and perpendicular to the fixed plate, the fixed plate is fixed on the roof guard or the rear window, the fan-shaped plate extends outward to correspond to the pawl, and the first fixed matching portion is formed on the arc-shaped outer end surface of the fan-shaped plate.

6. The forklift rear window opening angle adjustable device according to claim 1, characterized in that: There are two first fixed fitting parts, and when the second fixed fitting part of the pawl is fitted on the first first fixed fitting part, the opening angle of the rear window is 0°; when the second fixed fitting part of the pawl is fitted on the second first fixed fitting part, the opening angle of the rear window is greater than 0° and less than the maximum opening angle under the action of the elastic element, and the rear window does not exceed the body contour of the forklift.

7. The forklift rear window opening angle adjustable device according to claim 1, characterized in that: The first fixed matching portion is a concave notch, and the second fixed matching portion is a convex tooth portion.

8. The forklift rear window opening angle adjustable device according to claim 1, characterized in that: The operating mechanism is arranged on the inner side of the rear window; the operating mechanism includes a driving part and a connecting line, and the two ends of the connecting line are respectively connected to the driving part and the pawl; the action of the driving part pulls the pawl through the connecting line to drive the pawl to swing in a direction away from the ratchet part, thereby driving the second fixed matching part of the pawl to disengage from the first fixed matching part.

9. The forklift rear window opening angle adjustable device according to claim 8, characterized in that: The driving part comprises a rotating shaft, a cam and a handle, wherein the handle is mounted on a first end of the rotating shaft, the cam is mounted on a second end of the rotating shaft and has an eccentric shaft, and the connecting line is connected to the eccentric shaft of the cam.

10. A forklift, comprising an overhead guard and a rear window hinged to the overhead guard; characterized in that: A forklift rear window opening angle adjustable device as claimed in any one of claims 1 to 9 is also provided between the rear window and the overhead guard, and the rear window can be fixed at least within the range of an opening angle greater than 0° and less than the maximum opening angle under the action of an elastic element through the forklift rear window opening angle adjustable device.

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