How to design garden tools with humanity?

Garden tools are a type of hand tools. Garden tools include garden hoe, garden shovel, various pruning shears, high tree shears and thick branch shears. The use of these tools is not only inseparable from our hands, but also depends on our hands more than ordinary work. Therefore, when designing garden tools, we need to consider the physiological characteristics of the hands, which is in line with humanized design principles.
General garden tools, such as pruning shears, add a few functions on the basis of ordinary scissors. Although the purpose of pruning is achieved, man-machine considerations are far from enough. The handle before the improvement, that is, the common handle is a figure eight, has obvious defects in the structure, and the ergonomic design is unreasonable. Neither the main feeling in the actual use process nor the theoretical scrutiny has reached the best effect of the design. For example, in the field of theoretical mechanics, because the little thumb is naturally short, the eight-shaped handle little thumb does not exert force at all, and it does useless work from week to week.

Considering that the application of fingers has unlimited potential, in addition to making full use of each finger, it can also take care of the use of fingers of different sizes.The handle cover of the scissors combines the massage ball for the elderly's experience from a functional perspective.This massage handle cover It can touch the nerves of each finger and is full of fun. In this way, the use function, art function, health care function, etc. of the scissors product can be perfectly integrated to achieve the best design effect.
Some garden tools are very beautiful but not practical. Due to the particularity of the working objects of garden tools and its special requirements for users, their design should be more in line with the physiological structure of the hand. In the anatomical principles of the hand, it is required to keep the wrist straight when using hand tools.When the wrist deviates from its middle position and is in an awkward state of palm flexion, dorsiflexion, ulnar deviation, etc., the wrist tendon will be stretched excessively. Will cause wrist pain, reduced grip strength. When the wrist is straight, the wrist is in a relaxed state in the center, which can reduce fatigue.
A pruning shear with a curved handle, the design of the handle adopts inward bending.This design eliminates the need for fingers to bend a lot in the direction of the ulna. When cutting thin branches, you can put your fingers in the recess on the scissors. Keeping your wrists straight, you can also maximize the grip without bending the wrist joints, saving effort, which is especially beneficial for home gardening operations.
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