Anti-pinch device

Abstract

The utility model relates to the technical field of anti-pinch devices, and discloses an anti-pinch device which comprises a driver, a pressing assembly, a weighing assembly used for weighing the weight of the driver and the pressing assembly, and a control assembly used for controlling the driver to stop running. The weighing assembly is connected with the driver so as to send an electric signal when detecting that the weight fluctuation is greater than a value of normal operation, and the control assembly is electrically connected with the weighing assembly so as to control the driver to stop operating when receiving the electric signal sent by the weighing assembly. When the numerical value of the weighing assembly is greatly changed, the weighing assembly can send an electric signal to the control assembly, and the control assembly can control the driver to stop running, so that the pressing assembly can stop pressing in time, and the personal safety of operators can be protected. Therefore, the driver is controlled to stop running only when the numerical value fluctuation of the weighing assembly is detected to be greater than the normal state, the clamping hand detection accuracy is higher, the number of times of extra stop running is effectively reduced, and the practicability is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of anti-pinch devices, and particularly relates to an anti-pinch hand device. Background Art

[0002] Some existing mechanical equipment may contain components that require downward pressure to operate, and operators may need to add or remove materials from under the downward pressure components. However, if operated improperly, the downward pressure components may easily pinch the operator's hands during operation. Furthermore, since downward pressure components are usually heavy, they can cause certain injuries to the operator. To prevent this, it is often necessary to provide an anti-pinch structure on the downward pressure components to promptly control the actuator of the downward pressure components to stop operation, thereby ensuring the personal safety of the operator.

[0003] Current anti-pinch structures typically employ an infrared sensor positioned beneath a downward pressure component. Upon detecting a person passing by, the infrared sensor sends an electrical signal to a control component, which in turn stops the actuator driving the downward pressure component. However, this approach often results in a high number of unnecessary stops during sampling and feeding. Consequently, existing anti-pinch structures are less practical. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the utility model provides an anti-pinch device.

[0005] The technical effects to be achieved by the present invention are achieved through the following technical aspects:

[0006] A finger pinch prevention device comprises: a driver, a pressing assembly, a weighing assembly for weighing the driver and the pressing assembly, and a control assembly for controlling the driver to stop running;

[0007] The weighing component is connected to the driver to send an electrical signal when it detects that the weight fluctuation is greater than the value of normal operation. The control component is electrically connected to the weighing component to control the driver to stop running when it receives the electrical signal sent by the weighing component.

[0008] In some embodiments, the pressing component has an easy-to-grip end, the output end of the driver is connected to an end of the pressing component away from the easy-to-grip end, and the easy-to-grip end is suspended.

[0009] In some embodiments, the pressing assembly is configured as a top cover assembly, and a pressing member is provided below the easy-to-grip end.

[0010] In some embodiments, the weighing assembly includes a junction box and a weighing sensor, the junction box is electrically connected to the weighing sensor, and the weighing sensor is electrically connected to the control assembly.

[0011] In some embodiments, the control component is configured as a PLC.

[0012] In some embodiments, the driver is detachably connected to the weighing assembly.

[0013] In some embodiments, a horizontal support is further included, and the weighing assembly is arranged on the horizontal support.

[0014] In some embodiments, a limiting member is provided on the horizontal support.

[0015] In some embodiments, the limiting member is configured as a limiting plate, and a limiting opening is defined on the limiting plate.

[0016] In some embodiments, a protective baffle is provided on the horizontal support.

[0017] In summary, the present invention has at least the following advantages:

[0018] The anti-pinch device provided by the present invention is that when the driver drives the pressing component to descend during operation, since the weighing component supports the driver and the pressing component, the value of the weighing component will change slightly during the descent of the pressing component; however, during the descent process, when the pressing component is pinched, the pressing component will be affected by the supporting force, so the value of the weighing component will change significantly. At this time, the weighing component will send an electrical signal to the control component, and the control component will control the driver to stop running, so that the pressing component can stop pressing in time, thereby preventing the pressing component from further pinching the hand and protecting the personal safety of the operator. Therefore, it can be seen that the present device needs to control the driver to stop running when it detects that the value fluctuation of the weighing component is greater than the normal value. The accuracy of its detection of pinching is higher, thereby effectively reducing the number of additional stops. Therefore, the anti-pinch structure of the present device is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the anti-pinch device according to an embodiment of the present utility model;

[0020] Figure 2 for Figure 1 A local enlarged schematic diagram of point A in FIG;

[0021] Figure 3 This is a structural schematic diagram of an anti-pinch device according to an embodiment of the present utility model.

[0022] Markings in the figure:

[0023] 10. Anti-pinch device;

[0024] 100, driver;

[0025] 200, press down assembly; 210, easy to pinch hand end;

[0026] 300, weighing component;

[0027] 400, horizontal support; 410, limiter; 420, protective baffle;

[0028] 500. Clamping parts. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] In the following embodiments and drawings, reference is made to Figure 1 In the coordinate system, the direction indicated by the arrow of the X axis is right, the direction indicated by the arrow of the Y axis is forward, and the direction indicated by the arrow of the Z axis is up.

[0032] Example 1:

[0033] like Figures 1 to 3 As shown, in this embodiment, an anti-pinch device 10 is provided, including: a driver 100, a pressing component 200, a weighing component 300 for weighing the weight of the driver 100 and the pressing component 200, and a control component for controlling the driver 100 to stop running; the weighing component 300 is connected to the driver 100 to send an electrical signal when it detects that the weight fluctuation is greater than the value of normal operation, and the control component is electrically connected to the weighing component 300 to control the driver 100 to stop running when receiving the electrical signal sent by the weighing component 300.

[0034] Specifically, the driver 100 is disposed above the weighing assembly 300. The driver 100 may be, but is not limited to, an electric cylinder. The pressing assembly 200 is lifted or lowered under the action of the driver 100. The control assembly is used to control the driver 100 to stop running.

[0035] It is worth noting that when the driver 100 is working, the pressing assembly 200 is driven to descend. Since the weighing assembly 300 supports the driver 100 and the pressing assembly 200, the value of the weighing assembly 300 will change slightly during the descent of the pressing assembly 200. However, during the descent, when the pressing assembly 200 is pinched, the pressing assembly 200 will be affected by the supporting force. Therefore, the value of the weighing assembly 300 will change significantly. At this time, the weighing assembly 300 will send an electrical signal to the control assembly, and the control assembly will control the driver 100 to stop running, so that the pressing assembly 200 can stop pressing in time, thereby preventing the pressing assembly 200 from further pinching the hand and protecting the personal safety of the operator. Therefore, it can be seen that the device needs to control the driver 100 to stop running when it detects that the value fluctuation of the weighing assembly 300 is greater than the normal value. The accuracy of its detection of pinching is higher, which can effectively reduce the number of additional stops. Therefore, the practicality of the anti-pinch structure of the device is stronger.

[0036] In order to make the detection effect more accurate, Figure 3 As shown, in some embodiments, the pressing component 200 has an easy-to-grip end 210 , the output end of the driver 100 is connected to an end of the pressing component 200 away from the easy-to-grip end 210 , and the easy-to-grip end 210 is suspended.

[0037] Specifically, the left end of the pressing component 200 is supported by the driver 100, and the right end of the pressing component 200 is suspended. In this way, the right end of the pressing component 200 is subjected to additional support, that is, when clamping the hand, the force is more obvious, so that the weighing component 300 under the driver 100 can react quickly, making the detection effect of the device more accurate.

[0038] Example 2

[0039] This embodiment is a further implementation of embodiment 1. In this embodiment, the weighing assembly 300 includes a junction box and a weighing sensor. The junction box is electrically connected to the weighing sensor, and the weighing sensor is electrically connected to the control assembly.

[0040] Specifically, the junction box is used for wiring processing to transmit electrical energy to the required components, the weighing sensor is used to weigh the weight of the driver 100 and the down-pressing component 200, and the junction box and the weighing sensor are connected by wires, and the weighing sensor and the control component are connected by wires.

[0041] To facilitate the use of the control component, in some embodiments, the control component is configured as a PLC.

[0042] Specifically, the control component may be, but is not limited to, a PLC (Programmable Logic Controller). The load cell can transmit signals to the PLC, which then controls the electric cylinder to drive the working component up and down. The manner in which the PLC cooperates with the load cell and controls the electric cylinder is well known to those skilled in the art and is feasible, and is not described in detail in this embodiment.

[0043] To facilitate disassembly and replacement of the device, in some embodiments, the driver 100 and the weighing assembly 300 are detachably connected.

[0044] Specifically, the electric cylinder and the weighing sensor may be optionally but not limited to pin-connected, and the detachable connection between the two can effectively ensure timely replacement and repair of damaged weighing components 300 or drivers 100, thereby effectively increasing the practicality of the device.

[0045] In order to facilitate the positioning and installation of the weighing assembly 300, as shown in FIG. Figure 2 and Figure 3 As shown, in some embodiments, the anti-pinch device 10 further includes a horizontal support 400 , and the weighing assembly 300 is disposed on the horizontal support 400 .

[0046] Specifically, the horizontal support 400 is configured as a concave plate. By mounting the junction box and load cell on the horizontal support 400, the weighing assembly 300 can be easily fixed and installed. This allows the weighing assembly 300 to be mounted in the desired position via the horizontal support 400 while avoiding weighing errors caused by instability when mounted on an external structure, thereby effectively increasing the practicality of the device. The control assembly is also mounted on the horizontal support 400.

[0047] In order to facilitate the positioning of the components such as the harness of the weighing assembly 300, as shown in FIG. Figure 2 and Figure 3 As shown, in some embodiments, a limiting member 410 is provided on the horizontal support 400 .

[0048] Specifically, a limiter 410 is provided on the top end surface of the horizontal support 400. The limiter 410 limits the position of the wiring harness and other components of the weighing assembly 300 and provides a certain degree of protection and retention for the wiring harness and other components of the weighing assembly 300, thereby effectively increasing the practicality of the device.

[0049] In order to facilitate the use of the limiting member 410, as shown in FIG. Figure 2 and Figure 3 As shown, in some embodiments, the limiting member 410 is configured as a limiting plate, and a limiting opening is defined on the limiting plate.

[0050] Specifically, the limiting member 410 may be, but is not limited to, a limiting plate. The top of the concave horizontal support 400 is connected to the limiting plate, and the number of limiting plates may be, but is not limited to, two. The limiting openings act as a limiting mechanism, thereby allowing components such as the wiring harness of the weighing assembly 300 to be positioned and accommodated. The number and shape of the limiting openings are not limited herein and are determined based on specific production requirements; they only need to be able to position and secure the components such as the wiring harness of the weighing assembly 300.

[0051] In order to protect the weighing assembly 300, in some embodiments, as Figure 2 As shown, in some embodiments, a protective baffle 420 is provided on the horizontal support 400 .

[0052] Specifically, the protective baffle 420 may be selected but not limited to a triangular plate, and the number of the protective baffles 420 may be selected but not limited to four. The front and rear sides of the horizontal support 400 are respectively provided with: two protective baffles 420 mirror-distributed on the left and right sides of the horizontal support 400. By providing the protective baffle 420 on the peripheral side of the horizontal support 400, the overall stability of the horizontal support 400 is increased while protecting the weighing component 300 located in the middle of the horizontal support 400, thereby extending the service life of the weighing component 300.

[0053] In order to reduce damage to the operator, in some embodiments, a soft layer is embedded in the bottom surface of the easy-to-grip end 210 , and the soft layer is flush with the bottom end surface of the easy-to-grip end 210 .

[0054] Specifically, the bottom end surface of the easy-grip end 210 has a working portion. The material of the soft layer can be, but is not limited to, silicone. The soft layer is embedded at the bottom end of the easy-grip end 210 so as to be flush with the working surface of the easy-grip end 210. The soft layer and the working portion of the easy-grip end 210 are staggered to avoid affecting the operation of the working portion of the easy-grip end 210. In this way, by providing a soft layer around the side of the easy-grip end 210, it can reduce damage caused by the non-working portion pinching the hand.

[0055] In order to reduce damage to the operator, in some embodiments, a plurality of arc-shaped avoidance grooves are provided on the bottom end surface of the easy-to-pinch end 210 .

[0056] Specifically, the arc-shaped avoidance groove is staggered with the working part of the easy-to-pinch end 210. The shape and size of the arc-shaped avoidance groove match the shape of the human hand and can accommodate the placement of the human hand. An arc-shaped avoidance groove is provided in the non-working area of ​​the easy-to-pinch end 210. When pressing down, the operator can quickly put the hand into the arc-shaped avoidance groove for avoidance, thereby effectively avoiding the easy-to-pinch end 210 from causing serious damage to the operator when pressing on the human body.

[0057] Example 3

[0058] This embodiment is a further implementation of embodiment 1 or 2. Figure 1 and Figure 3 As shown, in this embodiment, the pressing assembly 200 is configured as a top cover assembly, and a pressing member 500 is provided below the easy-to-grip end 210 .

[0059] Specifically, the electric cylinder is connected to the top cover assembly via bolts, and the up and down movement of the top cover assembly is driven by the electric cylinder. During the descent of the top cover assembly, there is a risk of hand pinching. The electric cylinder is supported by a weighing assembly 300, which measures the weight of the electric cylinder and the top cover assembly. The clamping member 500 is configured as a clamping barrel to facilitate the use of the top cover assembly. During the up and down movement of the top cover assembly, the numerical variation range of the weighing assembly 300 is relatively small. However, if the top cover assembly has not yet descended into position but the numerical variation of the weighing assembly 300 is large, it can be determined that hand pinching has occurred. At this point, the control assembly sends an electrical signal to lock the electric cylinder, and the top cover assembly will no longer descend. It is understood that the electric cylinder is equipped with a brake to stop operation. The descent of the top cover assembly into position is detected by other sensors, not by the weighing assembly 300.

[0060] It can be understood that the device solves the problem of the top cover assembly pinching the hands during the descent process by using the weighing assembly, and the device is also applicable to all equipment that requires finger prevention.

[0061] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0062] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate 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 used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0063] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it 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 rather that it can be slightly tilted.

[0064] In the present invention, unless otherwise expressly specified or limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0065] Although the present invention has been described with reference to the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and variations based on the above content. Therefore, all such substitutions, modifications and variations are included within the spirit and scope of the appended claims.

Claims

1. A finger-pinch prevention device, characterized in that: include: A driver (100), a pressing assembly (200), a weighing assembly (300) for weighing the driver (100) and the pressing assembly (200), and a control assembly for controlling the driver (100) to stop operating; The weighing component (300) is connected to the driver (100) to send an electrical signal when a weight fluctuation greater than a normal operating value is detected, and the control component is electrically connected to the weighing component (300) to control the driver (100) to stop operating when receiving the electrical signal sent by the weighing component (300).

2. The anti-pinch device according to claim 1, characterized in that: The pressing component (200) has an easy-to-grip end (210), the output end of the driver (100) is connected to an end of the pressing component (200) away from the easy-to-grip end (210), and the easy-to-grip end (210) is suspended.

3. The anti-pinch device according to claim 2, characterized in that: The pressing assembly (200) is configured as a top cover assembly, and a pressing member (500) is provided below the easy-to-grip end (210).

4. The anti-pinch device according to any one of claims 1 to 3, characterized in that: The weighing assembly (300) comprises a junction box and a weighing sensor, wherein the junction box is electrically connected to the weighing sensor, and the weighing sensor is electrically connected to the control assembly.

5. The anti-pinch device according to any one of claims 1 to 3, characterized in that: The control component is configured as a PLC.

6. The anti-pinch device according to any one of claims 1 to 3, characterized in that: The driver (100) is detachably connected to the weighing assembly (300).

7. The anti-pinch device according to any one of claims 1 to 3, characterized in that: It also includes a horizontal support (400), on which the weighing assembly (300) is arranged.

8. The anti-pinch device according to claim 7, characterized in that: A limiting member (410) is provided on the horizontal support (400).

9. The anti-pinch device according to claim 8, characterized in that: The limiting member (410) is configured as a limiting plate, and a limiting opening is provided on the limiting plate.

10. The anti-pinch device according to claim 7, characterized in that: A protective baffle (420) is provided on the horizontal support (400).

Images