Integrated mini-tiller armrest frame assembly convenient for angle adjustment

Abstract

The utility model discloses an integrated mini-tiller arm-rest frame assembly convenient for angle adjustment, which comprises an arm-rest seat, an arm-rest frame and an adapter, the arm-rest frame is a U-shaped pipe which is integrally bent and formed, and one end of the adapter is fixedly arranged at the bent part of the arm-rest frame; a screw rod with the end penetrating through the left side and the right side of the armrest seat is arranged at the end, close to the adapter, of the armrest seat, and the left side and the right side of the armrest seat are each provided with a first end face gear arranged on the screw rod in a sleeving mode. Two second end face gears which sleeve the left side and the right side of the screw rod and are meshed with the first end face gears on the corresponding sides are arranged at one end, opposite to the armrest seat, of the adapter; and locking nuts which are in threaded fit with the screw rod are arranged on the screw rod and outside the two second end face gears. By arranging the adapter and arranging the first end face gear and the second end face gear which are meshed with each other at the connecting end of the adapter and the armrest seat, the rotating angle of the armrest frame can be accurately controlled, and meanwhile, the structure of the rotating end is more stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to micro plough technology field, concretely relates to a one-piece micro plough handrail frame assembly convenient for angle adjustment. BACKGROUND

[0002] The micro plough handrail is mainly composed of a handrail seat and a handrail frame hinged at one end of the handrail seat. Generally, the existing handrail frame has two structures. One is a U-shaped pipe integrally bent and formed, and a connecting piece is arranged on the bent part of the handrail frame, and a rotating shaft is arranged on the connecting piece, and the rotating shaft is rotatably connected between the handrail seat (such as the micro plough handrail disclosed in Chinese patent application No. 2011200986830). The other is composed of two handrail rods arranged on the left and right sides of the handrail seat, and the handrail rods are rotatably connected with the handrail seat through a rotating shaft. In the above two structures, the angle adjustment is mainly realized through the rotating shaft, and after being rotated to the position, the rotating shaft is locked and fixed. This angle adjustment structure is not stable enough, and after being adjusted to the position, it cannot be preliminarily stabilized in the current state, and another person is needed to lock and fix the rotating shaft, or one hand holds the handrail frame and the other hand locks and fixes the rotating shaft, which is relatively inconvenient to operate. SUMMARY

[0003] In view of the above problems existing in the prior art, the purpose of the utility model is to provide a one-piece micro plough handrail frame assembly convenient for angle adjustment, which solves the problems of inconvenient angle adjustment and locking of the handrail frame of the existing micro plough handrail assembly and the instability of the adjustment structure.

[0004] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0005] An integrated handrail frame for a micro-tiller, facilitating angle adjustment, comprises a handrail base, a handrail frame, and an adapter. The handrail frame is a U-shaped tube formed by integral bending. One end of the adapter is fixedly installed at the bend of the handrail frame. A screw rod with its end penetrating both sides of the handrail base is provided at the end of the handrail base near the adapter. A first end face gear is provided on both sides of the handrail base and fitted onto the screw rod. Two second end face gears are provided on the end of the adapter opposite to the handrail base and fitted onto the left and right sides of the screw rod, meshing with the corresponding first end face gears. A locking nut that is threadedly engaged with the screw rod is provided on the screw rod and outside the two second end face gears. In this way, the handrail frame and handrail base are rotatably connected via an adapter and a screw. The first and second end-face gears allow the operator to rotate the handrail frame at a certain angle. Because the angle offset is controlled by gear meshing, the rotation angle is more precisely controlled. After rotation to the desired position, simply turning one of the locking nuts secures the second and first end-face gears to the handrail base, achieving positioning and making angle adjustment convenient. To readjust the angle, simply rotate the locking nut in the opposite direction to unlock the first and second end-face gears. Simultaneously, the first and second end-face gears are located on the outside of the handrail base and the inside of the adapter, respectively, and are fitted onto the screw. After locking, this ensures a stable connection between the adapter and the handrail base, preventing displacement due to vibration. One end of the adapter is fixed to the bend in the handrail frame; once the adapter is securely fixed, the handrail frame becomes even more stable.

[0006] Furthermore, the adapter includes two connecting plates that are sleeved and fixed at the bend of the handrail frame. Two second end-face gears are welded and fixed to the inner side of the connecting plates. Each connecting plate has a through hole for threading a screw. Thus, the adapter has a simple structure, consisting of two spaced-apart connecting plates. After the second end-face gears are welded and fixed to the inner side of the connecting plates, their toothed sides correspond to the teeth of the first end-face gears, achieving meshing. The through holes on the connecting plates allow the screw to pass through, allowing the connecting plates and second end-face gears to be fitted onto the screw.

[0007] Furthermore, a hexagonal protrusion is welded and fixed to the outer side of one of the connecting plates, with the center of the hexagonal protrusion and the through hole on the same axis. The corresponding side of the screw is hexagonal, fitting snugly onto the hexagonal protrusion, and its end extends beyond the hexagonal protrusion to engage with the corresponding locking nut. Thus, with the hexagonal protrusion, the screw, when engaged with it, has a good locking effect and is less prone to rotation due to vibration or other external forces.

[0008] Furthermore, the middle portion of the connecting plate is bent outwards. This bending of the middle portion of the connecting plate increases its strength and extends its service life.

[0009] Furthermore, the screw is a double-ended screw. This means that both ends of the screw are threaded, allowing for threaded engagement with the locking nut, while the middle section is unthreaded. This results in less friction between the first and second end face gears and the screw during rotation, leading to smoother and less strenuous rotation. Attached Figure Description

[0010] Figure 1 This is a side view of the micro-tiller handle assembly before angle adjustment in the embodiment.

[0011] Figure 2 This is a side view of the tiller handle assembly after the angle adjustment is completed and it is locked in place, as shown in the embodiment.

[0012] Figure 3 for Figure 2 A top-view structural diagram.

[0013] Figure 4 This is a magnified schematic diagram of part A in convex structure 3. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0015] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] like Figures 1-4As shown in the figure, the integrated handrail frame of the micro-tiller provided in this embodiment is easy to adjust in angle. It includes a handrail base 1, a handrail frame 2 and an adapter 3. The handrail frame 2 is a U-shaped tube that is bent in one piece. One end of the adapter 3 is fixedly installed at the bend of the handrail frame 2. A screw 4 is provided at the end of the handrail base 1 near the adapter 3, with its end penetrating through the left and right sides of the handrail base 1. A first end face gear 5 is provided on the left and right sides of the handrail base 1 and is sleeved on the screw 4. Two second end face gears 6 are provided at the end of the adapter 3 opposite to the handrail base 1 and are sleeved on the left and right sides of the screw 4 and mesh with the corresponding first end face gears 5. A locking nut 7 is provided on the screw 4 and outside the two second end face gears 6 and is threadedly engaged with the screw 4. In this way, the handrail frame 2 and the handrail seat 1 are rotatably connected via the adapter 3 and the screw 4. The first end face gear 5 and the second end face gear 6 can rotate a certain angle when the operator rotates the handrail frame 2. Since the angle offset is controlled by gear meshing, the rotation angle control is more precise. After rotating to the correct position, simply rotate one of the locking nuts 7 to press and fix the second end face gear 6 and the first end face gear 5 onto the handrail seat 1, achieving positioning and making angle adjustment convenient. When the angle needs to be adjusted again, simply rotate the locking nut 7 in the opposite direction to unlock the first end face gear 5 and the second end face gear 6. At the same time, the first end face gear 5 and the second end face gear 6 are respectively located on the outside of the handrail seat 1 and the inside of the adapter 3, and are fitted onto the screw 4. After locking, this ensures a stable connection between the adapter 3 and the handrail seat 1, preventing displacement due to vibration. One end of the adapter 3 is fixed to the bend of the handrail frame 2. After the adapter 3 is firmly fixed, the handrail frame 2 is also more stable.

[0017] like Figure 3 As shown, the armrest seat 1 in this embodiment includes a fixed base plate and a fixed tube welded and fixed to the middle of the fixed base plate. Multiple fixing holes are provided around the fixed base plate, and the upper end of the fixed tube is inclined forward. A reinforcing plate is provided on the fixed base plate, with its upper end fixed to the lower end of the fixed tube and its lower end welded and fixed to the fixed base plate. A transverse through hole for a screw rod 4 is provided at the upper end of the fixed tube; the screw rod 4 passes through the transverse through hole, with both ends extending out of the fixed tube.

[0018] like Figure 4As shown, the adapter 3 includes two connecting plates 31 that are sleeved and fixed at the bend of the handrail frame 2. Two second end face gears 6 are welded and fixed to the inner side of the connecting plates 31. Each connecting plate 31 has a through hole for threading a screw. The center of the through hole is on the same axis as the center of the mounting hole in the middle of the first and second end face gears. Thus, the adapter 3 has a simple structure, consisting of two spaced connecting plates 31. After the second end face gear 6 is welded and fixed to the inner side of the connecting plate 31, the toothed side corresponds to the tooth of the first end face gear 5, achieving meshing. The through hole provided on the connecting plate 31 allows the screw 4 to pass through, and the connecting plate 31 and the second end face gear 6 are sleeved on the screw 4.

[0019] A hexagonal protrusion (not shown in the figure) is welded and fixed to the outside of one of the connecting plates. The center of the hexagonal protrusion is on the same axis as the through hole. The corresponding side of the screw is hexagonal and fits onto the hexagonal protrusion. After the end of the screw extends out of the hexagonal protrusion, it engages with the corresponding locking nut. In this way, after setting the hexagonal protrusion, the screw has a good locking effect and is not easily rotated due to vibration or other external forces.

[0020] Furthermore, the middle portion of the connecting plate 31 is bent outwards. In specific implementations, the strength of the connecting plate 31 can be increased by adding reinforcing ribs or increasing the thickness of the connecting plate 31. The connecting plate 31 is fitted onto the handrail frame 2, and the fitting is fixed by welding or by using two clamping members. In this embodiment, the connecting plate 31 is teardrop-shaped, with the end closer to the first end face gear 5 being wider than the other end. In this way, bending the middle portion of the connecting plate 31 increases its strength and extends its service life.

[0021] In this embodiment, the screw 4 used is a double-ended screw. Thus, the screw 4 has threads at both ends, allowing it to engage with the locking nut 7, while the middle section is unthreaded. This results in less friction between the first end face gear 5 and the second end face gear 6 and the screw 4 during rotation, leading to smoother and less strenuous rotation.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A one-piece handrail frame for a micro-tiller that is easy to adjust in angle, comprising a handrail base, a handrail frame, and a connector, wherein the handrail frame is a U-shaped tube formed by one-piece bending, and one end of the connector is fixedly installed at the bend of the handrail frame, characterized in that, A screw rod with its end penetrating through both sides of the armrest is provided at one end of the armrest seat near the adapter. A first end face gear is provided on each side of the armrest seat and fitted onto the screw rod. Two second end face gears are provided on the left and right sides of the screw rod and mesh with the corresponding first end face gears at the end of the adapter opposite to the armrest seat. A locking nut that is threadedly engaged with the screw rod is provided on the screw rod and outside the two second end face gears.

2. The integrated micro-tiller handlebar frame assembly for easy angle adjustment as described in claim 1, characterized in that, The adapter includes two connecting plates that are sleeved and fixed at the bend of the handrail frame. Two second end face gears are welded and fixed to the inside of the connecting plates. Each of the two connecting plates is provided with a through hole for threading a screw.

3. The integrated micro-tiller handlebar frame assembly for easy angle adjustment as described in claim 2, characterized in that, A hexagonal protrusion is provided on the outer side of one of the connecting plates, and the center of the hexagonal protrusion is on the same axis as the through hole; the screw is hexagonal in shape corresponding to the hexagonal protrusion.

4. The integrated micro-tiller handlebar frame assembly for easy angle adjustment as described in claim 2 or 3, characterized in that, The middle part of the connecting plate is bent outward.

5. The integrated micro-tiller handlebar frame assembly with easy angle adjustment according to claim 1, 2, or 3, characterized in that, The screw is a double-ended screw.

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