An electric pruning shears to prevent accidental finger cutting
By installing infrared and temperature sensors on the electric pruning shears, combined with structures such as locking posts and limit cones, the problem of users accidentally cutting their fingers due to distraction is solved, achieving safety protection for the electric pruning shears, ensuring that the motor stops running in abnormal conditions, and avoiding accidental cutting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNNAN DEHONG TROPICAL AGRI RES INST
- Filing Date
- 2025-08-22
- Publication Date
- 2026-06-02
AI Technical Summary
Existing electric pruning shears may result in users being distracted and accidentally cutting off their left-hand fingers, lacking an effective protection mechanism.
Infrared and temperature sensors are installed on the electric pruning shears. By sensing the proximity of the left hand to the shears, the motor is stopped to prevent accidental cutting. Combined with mechanical structures such as locking posts, pressing plates, and limiting cones, the safety of button operation is ensured.
It effectively avoids cutting the left hand fingers due to distracted operation, improves safety, and ensures that the electric pruning shears will not malfunction in abnormal conditions.
Smart Images
Figure CN224306424U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric pruning shears, and in particular to an electric pruning shears that prevent accidental cutting of fingers. Background Technology
[0002] Electric pruning shears are tools used for pruning trees, shrubs, and plants. They utilize electric power to drive the blades for cutting. Compared to traditional manual pruning shears, electric pruning shears are more efficient and easier to operate, making them particularly suitable for handling thicker branches and large-area pruning. The electric drive provides greater cutting force, easily cutting thicker branches. This reduces hand fatigue compared to using manual shears, and many electric pruning shears are designed to be lightweight, portable, and easy to operate, making them suitable for various applications such as home gardening, orchard management, and landscaping.
[0003] Most existing electric pruning shears are used by holding the branch with the left hand and pruning with the right hand. Because the switch is easy to turn on, users may accidentally cut their left hand fingers when they are distracted during pruning. Therefore, this problem needs to be solved. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an electric pruning shears that prevent accidental cutting of fingers.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An electric pruning shears design to prevent accidental finger cutting includes scissors. An infrared sensor is mounted on one side of the scissors, and a temperature sensor is mounted on the surface of the scissors near the infrared sensor. A start button is located inside the scissors, with a locking hole at the bottom of the start button. A locking pin is slidably connected inside the locking hole, and a reset mechanism is located at the end of the locking pin away from the start button. A compression groove is located on one side of the locking pin, and a compression plate is slidably connected inside the compression groove. An adjustment mechanism for adjusting the compression plate is located on one side of the compression plate, and a sliding groove is located on one side of the compression plate, containing a constraint mechanism for restraining the compression plate. Through the sensor design, the left hand can be protected to prevent finger cutting.
[0007] As a further embodiment of this utility model, the reset mechanism includes a mounting groove, which is opened on one side of the scissors. The locking pin is slidably connected inside the mounting groove. A first support rod is fixedly connected to the end of the locking pin away from the lock hole. The first support rod is slidably connected to one side inside the mounting groove. A second spring is sleeved on the surface of the first support rod. The top end of the second spring is fixedly connected to the bottom of the locking pin, and the bottom end of the second spring is fixedly connected to the inner surface of the mounting groove. By setting the second spring, the locking pin can be reset.
[0008] As a further embodiment of this utility model, the adjusting mechanism includes a pressure plate, which is fixedly connected to one side of the extrusion plate. Four limiting rods are fixedly connected to the surface of the pressure plate near the scissors, and the four limiting rods are slidably connected to the scissors. A first spring is sleeved on the surface of each of the four limiting rods. One end of each of the four first springs is fixedly connected to the scissors, and the other end of each of the four first springs is fixedly connected to the pressure plate. The extrusion plate can be adjusted by the setting of the first springs.
[0009] As a further embodiment of this utility model, the constraint mechanism includes two storage slots, which are symmetrically opened inside the slide groove. Each of the two storage slots has a limiting block slidably connected inside it. The surfaces of the two limiting blocks are fitted with the same limiting cone. A connecting column is fixedly connected to the surface of the limiting cone away from the extrusion plate. The connecting column is fixedly connected to one side of the mounting groove. A release mechanism for releasing the limiting block is provided on the surface of the connecting column away from the extrusion plate. A second support rod is slidably connected to one side of each of the two limiting blocks, and both second support rods are fixedly connected to one side of the storage slot. A third spring is sleeved on the surface of each of the two second support rods. One end of each third spring is fixedly connected to one side of the limiting block, and the other end of each third spring is fixedly connected to one side of the storage slot. By setting the limiting cone, the extrusion plate can be constrained.
[0010] As a further embodiment of this utility model, the release mechanism includes a sliding cone, which is slidably sleeved on the surface of the connecting column. A base plate is fixedly connected to the surface of the connecting column away from the limiting cone, and a tension spring is sleeved on the surface of the connecting column near the base plate. One end of the tension spring is fixedly connected to one side of the base plate, and the other end of the tension spring is fixedly connected to one side inside the mounting groove. By setting the sliding cone, the constraint of the limiting cone on the limiting block can be released.
[0011] The beneficial effects of this utility model are as follows:
[0012] This invention employs a sensor-based technology to monitor the left hand, thus protecting it from accidental finger cuts. It effectively addresses the common problem of users holding branches with their left hand while pruning with their right, where the pruning shears are easily opened and closed, potentially leading to finger cuts when the user is distracted. Infrared and temperature sensors are installed on the left side of the shears. When the left hand gets too close to the shears, the sensors send a signal to the controller. Since the motor in the shears is connected to the controller, the controller receives the signal and instructs the motor drive module to stop the motor, preventing finger cuts. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of an electric pruning shears for preventing accidental cutting of fingers, as proposed in this utility model.
[0014] Figure 2 This is a side view of the electric pruning shears for preventing accidental cutting of fingers, as proposed in this utility model.
[0015] Figure 3 This is a schematic diagram of the adjustment mechanism of an electric pruning shears to prevent accidental cutting of fingers, as proposed in this utility model.
[0016] Figure 4 for Figure 2 Enlarged structural diagram at point A in the diagram;
[0017] Figure 5 This is a schematic diagram of the constraint mechanism of an electric pruning shears to prevent accidental cutting of fingers, as proposed in this utility model.
[0018] Figure 6 for Figure 4 A magnified structural diagram at point A in the diagram.
[0019] In the diagram: 1. Scissors; 2. Pressure plate; 3. Locking post; 4. Extrusion plate; 5. Limiting cone; 6. Infrared sensor; 7. Temperature sensor; 101. Start button; 102. Lock hole; 103. Mounting slot; 201. Limiting rod; 202. First spring; 301. Extrusion groove; 302. First support rod; 303. Second spring; 401. Slide groove; 402. Storage slot; 403. Second support rod; 404. Third spring; 405. Limiting block; 501. Connecting post; 502. Slide cone; 503. Base plate; 504. Tension spring. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0022] Reference Figure 1 - Figure 6 An electric pruning shears for preventing accidental finger cutting includes scissors 1. An infrared sensor 6 is mounted on one side of the scissors 1, and a temperature sensor 7 is mounted on the surface of the scissors 1 near the infrared sensor 6. A start button 101 is located inside the scissors 1, with a locking hole 102 at its bottom. A locking pin 3 is slidably connected inside the locking hole 102. A reset mechanism for resetting the locking pin 3 is located at the end of the locking pin 3 away from the start button 101. A pressing groove 301 is located on one side of the locking pin 3, with a pressing plate 4 slidably connected inside the pressing groove 301. The pressing plate 4 allows the locking pin 3 to move. An adjustment mechanism for adjusting the pressing plate 4 is located on one side of the pressing plate 4, and a sliding groove 401 is located on one side of the pressing plate 4, with a constraint mechanism for restraining the pressing plate 4 inside the sliding groove 401. The sensors protect the left hand from accidental finger cutting.
[0023] Preferably, the reset mechanism includes a mounting groove 103, which is located on one side of the scissors 1. The locking pin 3 is slidably connected to the inside of the mounting groove 103. A first support rod 302 is fixedly connected to the end of the locking pin 3 away from the lock hole 102. The first support rod 302 is slidably connected to the inside of the mounting groove 103. A second spring 303 is sleeved on the surface of the first support rod 302. The top end of the second spring 303 is fixedly connected to the bottom of the locking pin 3, and the bottom end of the second spring 303 is fixedly connected to the inner surface of the mounting groove 103. The locking pin 3 can be reset by the setting of the second spring 303.
[0024] Preferably, the adjusting mechanism includes a pressure plate 2, which is fixedly connected to one side of the extrusion plate 4. Four limiting rods 201 are fixedly connected to the surface of the pressure plate 2 near the scissors 1. The pressure plate 2 allows the extrusion plate 4 to move. The four limiting rods 201 are slidably connected to one side of the scissors 1. Each of the four limiting rods 201 is fitted with a first spring 202. One end of each of the four first springs 202 is fixedly connected to one side of the scissors 1, and the other end of each of the four first springs 202 is fixedly connected to one side of the pressure plate 2. The extrusion plate 4 can be adjusted by the first springs 202.
[0025] Preferably, the constraint mechanism includes two receiving slots 402, which are symmetrically opened inside the slide groove 401. Each of the two receiving slots 402 has a limiting block 405 slidably connected inside it. The surfaces of the two limiting blocks 405 are fitted with the same limiting cone 5. A connecting post 501 is fixedly connected to the surface of the limiting cone 5 away from the extrusion plate 4. The connecting post 501 is fixedly connected to one side inside the mounting groove 103. The surface of the connecting post 501 away from the extrusion plate 4 is provided with a release mechanism for releasing the limiting blocks 405. The two limiting blocks 405... The two sides are slidably connected with second support rods 403, and both second support rods 403 are fixedly connected to one side inside the storage groove 402. The surfaces of the two second support rods 403 are fitted with third springs 404. The setting of the third springs 404 allows the limiting block 405 to be adjusted. One end of each of the two third springs 404 is fixedly connected to one side of the limiting block 405, and the other end of each of the two third springs 404 is fixedly connected to one side inside the storage groove 402. The setting of the limiting cone 5 can constrain the extrusion plate 4.
[0026] Furthermore, the release mechanism includes a sliding cone 502, which is slidably sleeved on the surface of the connecting post 501. A base plate 503 is fixedly connected to the surface of the connecting post 501 away from the limiting cone 5. A tension spring 504 is sleeved on the surface of the connecting post 501 near the base plate 503. One end of the tension spring 504 is fixedly connected to one side of the base plate 503, and the other end of the tension spring 504 is fixedly connected to one side inside the mounting groove 103. By setting the sliding cone 502, the constraint of the limiting cone 5 on the limiting block 405 can be released.
[0027] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: A start button 101 is provided on one side of the scissors 1, which can start the scissors 1 normally. However, a locking pin 3 is installed at the bottom of the start button 101, so when the start button 101 is pressed, the locking pin 3 needs to be moved first. A pressure plate 2 is installed on one side of the scissors 1, and a pressing plate 4 is installed on one side of the pressure plate 2. The pressing plate 4 cooperates with the locking pin 3. Therefore, when the start button 101 is pressed, the pressure plate 2 needs to be pressed first. Because one side of the pressing plate 4 is inclined, when the pressure plate 2... When the pressing plate 4 moves, it presses against the locking pin 3, causing it to move backward. After the locking pin 3 moves, the start button 101 can be pressed. Because the start button 101 can only be pressed after the pressing plate 2 is pressed, it constantly reminds the user that unlocking is required before normal use, thus preventing user distraction. Two limiting blocks 405 are installed on one side of the pressing plate 4, and these two limiting blocks 405 cooperate with the limiting cone 5 inside the scissors 1. Therefore, when the pressing plate 4 moves to a certain position, the limiting cone 5 will limit the pressing plate 4. This ensures that the scissors 1 can be used without pressing the pressure plate 2. However, when the limiting cone 5 limits the pressure plate 4, the pressure plate 4 can still move. A sliding cone 502 is installed on one side of the limiting cone 5. When the pressure plate 4 is pressed down forcefully due to user distraction, the limiting block 405 inside the pressure plate 4 will contact the sliding cone 502. A first spring 202 is installed on one side of the pressure plate 4. When the limiting cone 5 no longer constrains the pressure plate 4, the limiting block 405 will drive the sliding cone 502 to move. Because the sliding cone 502 and the limiting cone 5 are engaged, the limiting block 405 will move as the pressure plate 4 moves. The scissors completely disengage from the limiting cone 5, causing the squeezing plate 4 to reset. During the reset of the squeezing plate 4, the locking pin 3 also resets, locking the start button 101 again. This prevents the user from continuing to use the scissors while distracted. An infrared sensor 6 and a temperature sensor 7 are also installed on the left side of the scissors 1. When the left hand is too close to the scissors, the sensor will send a message to the controller. Since the motor in the scissors 1 is connected to the controller, the controller will send a command to the motor drive module after receiving the message, thereby stopping the motor and preventing the scissors 1 from cutting the fingers.
[0028] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An electric pruning shears for preventing accidental cutting of fingers, comprising scissors (1), characterized in that, An infrared sensor (6) is provided on one side of the scissors (1), and a temperature sensor (7) is provided on the surface of the scissors (1) near the infrared sensor (6). A start button (101) is provided inside the scissors (1). A lock hole (102) is provided at the bottom of the start button (101). A lock pin (3) is slidably connected inside the lock hole (102). A reset mechanism for resetting the lock pin (3) is provided at the end of the lock pin (3) away from the start button (101). A pressing groove (301) is provided on one side of the lock pin (3). A pressing plate (4) is slidably connected inside the pressing groove (301). An adjustment mechanism for adjusting the pressing plate (4) is provided on one side of the pressing plate (4). A sliding groove (401) is provided on one side of the pressing plate (4). A constraint mechanism for constraining the pressing plate (4) is provided inside the sliding groove (401).
2. The electric pruning shears for preventing accidental cutting of fingers according to claim 1, characterized in that, The reset mechanism includes a mounting groove (103) which is located on one side of the scissors (1). The locking pin (3) is slidably connected inside the mounting groove (103). A first support rod (302) is fixedly connected to the end of the locking pin (3) away from the lock hole (102). The first support rod (302) is slidably connected to one side inside the mounting groove (103). A second spring (303) is sleeved on the surface of the first support rod (302). The top end of the second spring (303) is fixedly connected to the bottom of the locking pin (3), and the bottom end of the second spring (303) is fixedly connected to the inner surface of the mounting groove (103).
3. The electric pruning shears for preventing accidental cutting of fingers according to claim 1, characterized in that, The adjustment mechanism includes a pressure plate (2), which is fixedly connected to one side of the extrusion plate (4). Four limiting rods (201) are fixedly connected to the surface of the pressure plate (2) near the scissors (1), and the four limiting rods (201) are slidably connected to one side of the scissors (1). A first spring (202) is sleeved on the surface of each of the four limiting rods (201). One end of each of the four first springs (202) is fixedly connected to one side of the scissors (1), and the other end of each of the four first springs (202) is fixedly connected to one side of the pressure plate (2).
4. The electric pruning shears for preventing accidental cutting of fingers according to claim 1, characterized in that, The constraint mechanism includes two storage slots (402), which are symmetrically opened inside the slide groove (401). Each of the two storage slots (402) is slidably connected to a limiting block (405). The surfaces of the two limiting blocks (405) are fitted with the same limiting cone (5). A connecting column (501) is fixedly connected to the surface of the limiting cone (5) away from the extrusion plate (4). The connecting column (501) is fixedly connected to one side inside the mounting groove (103). The surface of the connecting column (501) away from the extrusion plate (4) is provided with a release mechanism for releasing the limiting block (405).
5. The electric pruning shears for preventing accidental cutting of fingers according to claim 4, characterized in that, Each of the two limiting blocks (405) is slidably connected to a second support rod (403) on one side, and the two second support rods (403) are fixedly connected to one side of the inside of the storage groove (402). Each of the two second support rods (403) is fitted with a third spring (404). One end of each of the two third springs (404) is fixedly connected to one side of the limiting block (405), and the other end of each of the two third springs (404) is fixedly connected to one side of the inside of the storage groove (402).
6. The electric pruning shears for preventing accidental cutting of fingers according to claim 5, characterized in that, The release mechanism includes a sliding cone (502), which is slidably sleeved on the surface of the connecting column (501). A base plate (503) is fixedly connected to the surface of the connecting column (501) away from the limiting cone (5). A tension spring (504) is sleeved on the surface of the connecting column (501) near the base plate (503). One end of the tension spring (504) is fixedly connected to one side of the base plate (503), and the other end of the tension spring (504) is fixedly connected to one side inside the mounting groove (103).