Paper shredder with safe power-off function

Abstract

The utility model relates to the technical field of paper shredders, in particular to a paper shredder with a safe power-off function, which comprises a casing, a cover body is movably clamped at the upper end of the casing through a clamping column, a status indicator lamp is arranged on the left side of the front part of the upper end of the cover body, and two T-shaped clamping grooves are respectively arranged at the left part of the front end of the casing and the left part of the front end of the cover body. Wherein T-shaped clamping blocks are arranged in the left and right corresponding T-shaped clamping grooves, a receiving block is arranged at the front ends of the two T-shaped clamping blocks located at the upper part, and a transmitting block is arranged at the front ends of the two T-shaped clamping blocks located at the lower part. According to the paper shredder with the safe power-off function, the paper inlet is monitored in real time through the infrared switch, daily operation safety is guaranteed, automatic power-off during overhauling is achieved through the receiving block and the transmitting block, meanwhile, the T-shaped clamping block is matched with the pull ball, and part installation is facilitated; and the electric push rod drives the back plate and the dustproof plate to effectively prevent dust from entering the paper shredder, so that accumulated dust of parts is reduced.

Description

Technical Field

[0001] This utility model relates to the field of paper shredder technology, and in particular to a paper shredder with a safe power-off function. Background Technology

[0002] In today's office and information processing scenarios, paper shredders are widely used in various office spaces as important equipment for processing sensitive paper documents and preventing information leakage. However, traditional paper shredders have significant shortcomings in safety protection. During daily use, there is a lack of effective monitoring methods for the paper inlet. If the user is not careful during operation, their hand may accidentally enter the paper inlet, which can easily lead to hand injuries and cause physical and mental harm to the user. In addition, during equipment maintenance, when maintenance personnel open the shredder cover, the internal circuit usually cannot automatically cut off the power supply. This poses a risk of electric shock to maintenance personnel when they come into contact with internal components, seriously threatening their personal safety. Traditional paper shredders also have many inconveniences in terms of component installation and maintenance. For example, the installation process of key components such as the receiving block and the transmitting block is relatively complicated, and they are mostly installed by tightening bolts, which makes subsequent maintenance more laborious. Therefore, we have introduced a new paper shredder with a safe power-off function. Utility Model Content

[0003] The main purpose of this invention is to provide a paper shredder with a safe power-off function, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A paper shredder with a safe power-off function includes a housing. A cover is movably attached to the upper end of the housing via a locking pin. A status indicator light is located on the upper left front part of the cover. Both the front left of the housing and the front left of the cover have two T-shaped slots. Each of the two corresponding T-shaped slots contains a T-shaped block. The two upper T-shaped blocks share a common receiving block at their front ends, and the two lower T-shaped blocks share a common transmitting block at their front ends. An installation mechanism is movably mounted on the inner left side of both the housing and the cover via an inner groove. The inner left sides of the housing and the cover are respectively connected to the interior of the two left-side T-shaped slots. A paper inlet is located at the upper end of the cover. An installation groove is located above the inner rear wall of the paper inlet, and a dust-proof device is movably mounted inside the installation groove. An infrared switch is located on the inner left wall of the paper inlet. Hand-operated grooves are located on the left and right ends of the cover.

[0006] Preferably, the installation mechanism includes a movable insert rod, a spring is movably sleeved on the outer surface of the movable insert rod, a driving plate is provided at the right end of the movable insert rod, a limit insert post is provided at the right end of the driving plate, a pull ball is provided at the left end of the movable insert rod, and insertion holes are provided at the left ends of the two T-shaped blocks located on the left.

[0007] Preferably, the limiting post corresponds to the position of the insertion hole, and the limiting post is movably engaged inside the insertion hole by a spring and a drive plate.

[0008] Preferably, both the receiving block and the transmitting block are movably engaged inside the T-shaped slot via T-shaped locking blocks.

[0009] Preferably, the positions of the receiving block and the transmitting block are vertically aligned.

[0010] Preferably, the dustproof device includes a dustproof plate, a back plate is provided at the rear end of the dustproof plate, and two electric push rods are provided at the rear end of the back plate.

[0011] Preferably, the dustproof plate and the infrared switch do not contact each other, and the size of the dustproof plate is adapted to the paper feed port.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. By setting an infrared switch, the infrared switch can monitor the paper feed inlet in real time. Once it detects that a user's hand has entered, it quickly sends a signal to shut down the motor and immediately stop the blade rotation, effectively preventing hand injuries and providing reliable safety protection for daily operations. When the cover is opened for maintenance, due to the installation of the receiving block and the transmitting block, the receiving block and the transmitting block are separated when the cover is opened, and the signal transmission between the receiving block and the transmitting block is interrupted. The receiving block feeds back the signal change to the control system, prompting it to immediately cut off the motor power supply, realizing the overall automatic power-off, which greatly protects the safety of maintenance personnel.

[0014] 2. When installing the receiver and transmitter blocks, first align them with the corresponding T-slots using the T-shaped locking blocks. Pulling the pull ball will easily release and engage the limit pins, completing a secure installation. This not only facilitates component installation but also effectively blocks dust from being stirred up or scattered by the electric push rod, back plate, and dustproof plate during subsequent maintenance. This prevents dust from entering the shredder through the paper inlet when not in use and reduces dust accumulation on critical components such as the cutter head. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a paper shredder with a safe power-off function according to this utility model;

[0016] Figure 2This is a partial internal structural diagram of a paper shredder with a safe power-off function according to the present invention;

[0017] Figure 3 This is a schematic diagram of the overall structure of the installation mechanism of a paper shredder with a safe power-off function according to this utility model;

[0018] Figure 4 This is a schematic diagram of the overall structure of the dust prevention device for a paper shredder with a safe power-off function according to this utility model.

[0019] In the diagram: 1. Housing; 2. Cover; 3. Status indicator light; 4. T-shaped slot; 5. T-shaped block; 6. Receiver block; 7. Transmitter block; 8. Mounting mechanism; 80. Movable insert rod; 81. Spring; 82. Drive plate; 83. Limiting insert post; 84. Pull ball; 85. Insertion hole; 9. Paper inlet; 10. Mounting slot; 11. Dustproof device; 110. Dustproof plate; 111. Back plate; 112. Electric push rod; 12. Infrared switch; 13. Manual slot. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] A paper shredder with a safe power-off function includes a housing 1. A cover 2 is movably latched to the upper end of the housing 1 via a locking pin. A status indicator light 3 is located on the upper front left side of the cover 2. Two T-shaped slots 4 are provided on the front left side of both the housing 1 and the cover 2. Each of the two corresponding T-shaped slots 4 contains a T-shaped block 5. A receiving block 6 is located at the front end of the two upper T-shaped blocks 5, and a transmitting block 6 is located at the front end of the two lower T-shaped blocks 5. Block 7, the inner left side of the casing 1 and the inner left side of the cover 2 are both equipped with mounting mechanisms 8 through the inner groove. The inner left side of the casing 1 and the inner left side of the cover 2 are respectively connected to the interior of the two left T-shaped slots 4. The upper end of the cover 2 is provided with a paper inlet 9. The upper part of the inner rear wall of the paper inlet 9 is provided with a mounting groove 10. The dust prevention device 11 is movably installed inside the mounting groove 10. The inner left wall of the paper inlet 9 is provided with an infrared switch 12. The left and right ends of the cover 2 are both provided with hand-held grooves 13.

[0025] In this embodiment, the installation mechanism 8 includes a movable insert rod 80, with a spring 81 movably sleeved on the outer surface of the movable insert rod 80. A driving plate 82 is provided at the right end of the movable insert rod 80, and a limiting insert post 83 is provided at the right end of the driving plate 82. A pull ball 84 is provided at the left end of the movable insert rod 80. The left ends of the two T-shaped locking blocks 5 located on the left are each provided with a socket 85. The limiting insert post 83 corresponds to the position of the socket 85, and the limiting insert post 83 is movably locked inside the socket 85 by the spring 81 and the driving plate 82. The receiving block 6 and the transmitting block 7 are both movably locked inside the T-shaped slot 4 by the T-shaped locking blocks 5. The positions of the receiving block 6 and the transmitting block 7 are vertically corresponding.

[0026] The above method works as follows: When it is necessary to install the receiver block 6 and the transmitter block 7, they are aligned with the corresponding T-shaped slots 4 using the T-shaped locking block 5 and inserted. At the same time, the pull ball 84 is pulled to the left, causing the movable insertion rod 80 to move to the left, compressing the spring 81. The limiting insertion post 83 then disengages from the insertion hole 85. After the T-shaped locking block 5 is fully inserted into the T-shaped slot 4, the pull ball 84 is released, the spring 81 returns to its original deformation, and the movable insertion rod 80 is pushed to the right, causing the driving plate 82 and the limiting insertion post 83 to move to the right, so that the limiting insertion post 83 is inserted into the corresponding insertion hole 85, thereby fixing the T-shaped locking block 5 in the T-shaped slot 4 and achieving a stable installation of the receiver block 6 and the transmitter block 7.

[0027] In this embodiment, the dustproof device 11 includes a dustproof plate 110, a back plate 111 is provided at the rear end of the dustproof plate 110, and two electric push rods 112 are provided at the rear end of the back plate 111; the dustproof plate 110 and the infrared switch 12 do not contact each other, and the dustproof plate 110 is adapted to the size of the paper feed port 9.

[0028] The above solution allows for the following: During use, when dust protection is required for the paper inlet 9, the electric push rod 112 is activated. The electric push rod 112 extends, pushing the back plate 111 forward, which in turn moves the dustproof plate 110 forward, covering the paper inlet 9. This effectively blocks dust that may be blown or scattered from the outside when the device is not in use. When shredding is required, the controller activates both electric push rods 112, causing them to retract and pull the back plate 111 and dustproof plate 110 back to their original positions. Throughout this process, the dustproof plate 110 remains in contact with the infrared switch 12, preventing interference with its normal sensing function.

[0029] It should be noted that this utility model is a paper shredder with a safe power-off function. During use, when installing the receiving block 6 and the transmitting block 7, first align them with the corresponding T-shaped slots 4 using the T-shaped locking block 5 and insert them. During operation, pull the pull ball 84 to the left. At this time, the movable insert rod 80 moves to the left, the spring 81 is compressed, and the limiting insert post 83 disengages from the insertion hole 85. After the T-shaped locking block 5 is fully inserted into the T-shaped slot 4, release the pull ball 84. The spring 81 returns to its original deformation, pushing the movable insert rod 80 to the right, causing the driving plate 82 and the limiting insert post 83 to move to the right, so that the limiting insert post 83 is inserted into the corresponding insertion hole 85, completing the installation of the receiving block 6 and the transmitting block 7. This facilitates subsequent maintenance when the cover 2 is opened. Since the receiving block 6 and the transmitting block 7 are arranged vertically and vertically and installed in the T-shaped slots 4 using the T-shaped locking block 5, after the cover 2 is opened, the T-shaped locking block 6 and the transmitting block 7 can easily be inserted into the corresponding slots 4. When the card block 5 separates from the T-shaped card slot 4, the signal transmission between the receiving block 6 and the transmitting block 7 is interrupted. At this time, the status indicator 3 is off. The receiving block 6 feeds back the signal change to the control system. After receiving the signal, the control system immediately cuts off the motor power supply to achieve automatic power-off and ensure the safety of maintenance personnel. When the shredder is not in use, the electric push rod 112 is started. The electric push rod 112 extends and pushes the back plate 111 forward, which moves the dust cover 110 forward to cover the paper inlet 9 to block dust. When shredding is needed, the controller retracts the electric push rod 112 and pulls the back plate 111 and the dust cover 110 back to their original positions. When the shredder is running, if the infrared switch 12 detects that the user's hand is inserted into the paper inlet 9, it will immediately send a signal to the motor control system to turn off the motor and stop the blade rotation to prevent hand injury.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A paper shredder with a safe power-off function, comprising a housing (1), characterized in that: The upper end of the housing (1) is movably connected to the cover (2) via a locking pin. A status indicator light (3) is provided on the left side of the upper front part of the cover (2). Two T-shaped slots (4) are provided on the left front part of both the housing (1) and the cover (2). T-shaped blocks (5) are provided inside the two corresponding T-shaped slots (4). A receiving block (6) is provided at the front end of the two upper T-shaped blocks (5), and a transmitting block (7) is provided at the front end of the two lower T-shaped blocks (5). The left side of the housing (1) is connected to the cover (2). The inner left side of the side and the cover (2) are both equipped with an installation mechanism (8) through an inner groove. The inner left side of the housing (1) and the inner left side of the cover (2) are respectively connected to the interior of the two left T-shaped slots (4). The upper end of the cover (2) is provided with a paper inlet (9). The upper part of the inner rear wall of the paper inlet (9) is provided with an installation groove (10). The interior of the installation groove (10) is equipped with a dust prevention device (11). The inner left wall of the paper inlet (9) is provided with an infrared switch (12). The left and right ends of the cover (2) are both provided with a hand-holding groove (13). The installation mechanism (8) includes a movable insert rod (80), a spring (81) is movably sleeved on the outer surface of the movable insert rod (80), a driving plate (82) is provided at the right end of the movable insert rod (80), a limit insert post (83) is provided at the right end of the driving plate (82), a pull ball (84) is provided at the left end of the movable insert rod (80), and a plug hole (85) is provided at the left end of the two T-shaped blocks (5) located on the left.

2. A paper shredder with a safe power-off function according to claim 1, characterized in that: The limiting pin (83) corresponds to the position of the socket (85), and the limiting pin (83) is movably engaged inside the socket (85) by a spring (81) and a drive plate (82).

3. A paper shredder with a safe power-off function according to claim 1, characterized in that: Both the receiving block (6) and the transmitting block (7) are movably engaged inside the T-shaped slot (4) by the T-shaped card block (5).

4. A paper shredder with a safe power-off function according to claim 3, characterized in that: The receiving block (6) and the transmitting block (7) are positioned vertically.

5. A paper shredder with a safe power-off function according to claim 1, characterized in that: The dustproof device (11) includes a dustproof plate (110), and a back plate (111) is provided at the rear end of the dustproof plate (110). Two electric push rods (112) are provided at the rear end of the back plate (111).

6. A paper shredder with a safe power-off function according to claim 5, characterized in that: The dustproof plate (110) and the infrared switch (12) do not contact each other, and the dustproof plate (110) is adapted to the size of the paper feed port (9).

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