JP-7855460-B2 - pruning machine

Inventors

• 籾山 寛

Assignees

• 株式会社やまびこ

Dates

Publication Date

20260508

Application Date

20220831

Claims (9)

1. It is a pruning machine, A pruning mechanism having a pruning blade at the tip, A pole connected to the base end of the pruning mechanism, The pole comprises a hook projecting laterally substantially perpendicular to its central axis, and provided to be displaceable between a first position where its end is spaced away from the central axis and a second position where its end is approaching the central axis, and a hook mechanism having a biasing member that biases the hook from the second position toward the first position . A pruning machine in which the hook is configured to maintain a first position when a first external force is applied in the direction from the base end to the tip end, and to be displaced from the first position to the second position when a second external force is applied in the direction from the tip end to the base end and/or from the side toward the central axis.
2. In the pruning machine described in claim 1, A pruning machine in which the hook is configured to rotate between the first position and the second position.
3. In the pruning machine described in claim 2, Furthermore, the pruning machine has a first contact portion that contacts the hook at the first position to prevent the hook from rotating.
4. In the pruning machine described in claim 2, Furthermore, the pruning machine has a second contact portion that contacts the hook at the second position to prevent the hook from rotating.
5. In the pruning machine described in claim 1, A pruning machine in which the hook is configured to slide between the first position and the second position along a direction substantially perpendicular to the central axis.
6. In the pruning machine described in claim 1, The pruning machine wherein the hook, when in the first position , has a longitudinal size that increases from the tip end to the base end.
7. In the pruning machine described in claim 1, A pruning machine in which the end of the hook has a straight or curved convex end face.
8. In the pruning machine described in claim 1, The hook mechanism is provided at or near the connection point between the pruning mechanism and the pole, in a pruning machine.
9. In the pruning machine described in claim 1, A pruning machine in which the pruning blade is configured to rotate along an elliptical orbit with its major axis in the direction along the central axis.

Description

This invention relates to a pruning machine. Conventionally, pruning tools used for tasks such as mowing grass, trimming branches and leaves, and pruning trees are known (see Patent Document 1). This pruning tool comprises a tool part and a pole connected to the tool part. Furthermore, the pruning tool includes a hook assembly located on the tool itself or on the pole. By using the hook assembly, pruned branches that have become caught on the tree can be pulled off. International Publication No. 2018/046141 Figure 1 is a perspective view of a pruning machine according to one embodiment of the present invention.Figure 2 is a plan view of the pruning machine shown in Figure 1.Figure 3 is a side view of the pruning machine shown in Figure 1.Figure 4 is a plan view of the pruning mechanism.Figure 5 is an exploded perspective view showing the configuration of the hook mechanism.Figure 6 is a perspective view showing other configurations of the hook mechanism. The embodiments of the present invention will be described below with reference to the drawings. The various features shown in the embodiments below are interchangeable. Incidentally, the program for implementing the software appearing in this embodiment may be provided as a computer-readable non-transitor-readable medium, or it may be provided so that it can be downloaded from an external server, or it may be provided so that the program is launched on an external computer and its functions are realized on a client terminal (so-called cloud computing). Furthermore, in this embodiment, "part" may include, for example, hardware resources implemented by a broad-sense circuit and the information processing of software that can be specifically realized by these hardware resources. Also, while various types of information are handled in this embodiment, this information can be represented, for example, by the physical values of signal values representing voltage and current, the high or low values of signal values as a set of binary bits composed of 0s or 1s, or by quantum superposition (so-called qubits), and communication and calculations can be performed on a broad-sense circuit. Furthermore, a circuit in a broad sense refers to a circuit realized by combining at least an appropriate combination of circuits, circuits, processors, and memory. That is, it includes application-specific integrated circuits (ASICs), programmable logic devices (e.g., simple programmable logic devices (SPLDs), complex programmable logic devices (CPLDs), and field programmable gate arrays (FPGAs)), etc.). Figure 1 is a perspective view of a pruning machine according to one embodiment of the present invention. Figure 2 is a plan view of the pruning machine shown in Figure 1. Figure 3 is a side view of the pruning machine shown in Figure 1. Figure 4 is a plan view of the pruning mechanism. Figure 5 is an exploded perspective view showing the configuration of the hook mechanism. In the following explanation, the X, Y, and Z axes are defined to specify the direction, as shown in each figure. Therefore, the positive side in the X-axis direction corresponds to the "tip side," and the negative side in the X-axis direction corresponds to the "base side." As shown in Figures 1 to 3, the pruning machine 1 according to one embodiment of the present invention comprises a pruning mechanism 10, a pole (operating rod) 20 connected to the negative side (base end side) of the pruning mechanism 10 in the X-axis direction, and a drive mechanism 30 connected to the negative side (hand side) of the pole 20 in the X-axis direction. The pruning mechanism 10 has a pruning blade 111 on its positive X-axis side (tip side). In this embodiment, the pruning section 11 of the pruning mechanism 10 is a chainsaw having a continuously moving pruning blade 111. In this pruning mechanism 10, the chain, which is engaged with a sprocket in the gearbox 12, slides along the circumference of the guide plate 112, causing the pruning blades 111 mounted on the chain to move continuously. In other words, the pruning blades 111 are configured to rotate along an elliptical orbit with its major axis aligned with the central axis O of the pole 20. The pruning section 11 may be, for example, a saw with pruning blades that can reciprocate along a central axis O, scissors with pruning blades that can be opened and closed via the central axis O, or a disc or the like with pruning blades that can rotate around a rotation axis parallel to or inclined with respect to the central axis O. The drive mechanism 30 has a prime mover for driving the pruning mechanism 10. An engine or an electric motor can be used as the prime mover. If the prime mover is an engine, the drive mechanism 30 includes a fuel tank for storing the engine's operating fuel. On the other hand, if the prime mover is an electric motor, the drive mechanism 30 includes a battery for supplying electricity to the electric motor. The drive mechanism 30 may be separated from the