Vacuum packaging machine

Abstract

The utility model discloses a vacuum packaging machine which comprises an upper cover and a base, the upper cover is rotatably connected with the base, a locking mechanism is installed on the upper cover and comprises a button, a linkage rod and a lock catch, one end of the linkage rod is connected with the button, the other end of the linkage rod is connected with the lock catch, and the lock catch is connected with the upper cover. The base is provided with a buckling position matched with the lock catch, the lock catch is rotationally installed on the upper cover, the button acts on the linkage rod under the action of pressing force, the linkage rod drives the lock catch to rotate to be separated from the buckling position so that the upper cover and the base can be closed and unlocked, and the locking mechanism is connected with a reset elastic piece. The button, the linkage rod and the lock catch are all reset under the action of the reset elastic piece, by arranging the button type lock catch mechanism, a user only needs to press the button, unlocking can be achieved in a labor-saving mode, and the button type lock catch mechanism is simple in structure and high in transmission efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, more specifically to a vacuum packaging machine. Background Art

[0002] A vacuum packaging machine is a packaging device that completely extracts the air from a packaging container and seals it. After the food is put into a packaging bag, the air in the packaging bag is extracted by the vacuum packaging machine. After reaching a predetermined vacuum degree, the sealing process is completed, and the bag is kept in a highly decompressed state. The scarce air is equivalent to a low oxygen effect, which makes it impossible for microorganisms to survive, and can effectively prevent food from spoiling. Therefore, existing vacuum packaging machines require a closed cavity to extract a vacuum, and also require the plastic bag to be pressed tightly for sealing. Most vacuum packaging machines have a structure of an upper cover and a base, and require the installation of a seal and a heat press strip between the upper cover and the base. The seal requires a large pressure to seal, and the heat press strip also requires a large pressure to seal the plastic bag, so when the two are combined, a greater pressure is required.

[0003] For example, the utility model with the publication number CN203601618U discloses a locking device for the cover of a vacuum sealing machine, including a bottom cover, an upper cover covering the bottom cover, and a cover surface covering the top surface of the upper cover, wherein a knob is provided on the cover surface, the knob passes through the cover surface to connect to a working wheel, a reset mechanism is connected to the bottom surface of the working wheel, both sides of the working wheel are connected to a connecting rod mechanism driven by the working wheel, and the connecting rod mechanism is connected to a lock driven by the connecting rod mechanism and used to lock the upper cover and the bottom cover. In this technical solution, the upper cover and the bottom cover can be locked or opened by one-hand operation through the knob, and the lock is driven by the connecting rod mechanism to save more effort. The reset mechanism can automatically reset after the knob is placed in the lock release position and return to the storage state, so as to prevent the upper cover from automatically opening and damaging the machine when the machine is moved; however, the structure of the knob-type locking device is relatively complex, and the loss in the transmission process is large, and the transmission efficiency is low. Therefore, a new locking structure is needed that can not only realize labor-saving locking and unlocking, but also has a simple structure and high transmission efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a vacuum packaging machine, by arranging a button-type locking mechanism, the user only needs to press a button to unlock the machine with ease, and the button-type locking mechanism has a simple structure and high transmission efficiency.

[0005] The utility model provides a vacuum packaging machine, comprising an upper cover and a base, wherein the upper cover and the base are rotatably connected, a locking mechanism is installed on the upper cover, the locking mechanism comprises a button, a linkage rod and a lock buckle, one end of the linkage rod is connected to the button, the other end of the linkage rod is connected to the lock buckle, a buckle position adapted to the lock buckle is arranged on the base, the lock buckle is rotatably installed on the upper cover, the button is acted on the linkage rod by a pressing force, the lock buckle is driven by the linkage rod to rotate and disengage from the buckle position so that the upper cover and the base cover are unlocked, the locking mechanism is connected to a reset elastic member, and the button, the linkage rod and the lock buckle are all reset under the action of the reset elastic member.

[0006] The vacuum packaging machine is composed of an upper cover and a base rotatably connected. When in actual use, the vacuum packaging bag to be packaged is placed on the base, and the upper cover is rotated to cover the base, so that the vacuum packaging bag to be packaged is pressed between the upper cover and the base, and the gas in the vacuum packaging bag to be packaged is extracted by a vacuum device before sealing. A locking mechanism is provided on the upper cover, and a buckle position is provided on the base, and the locking mechanism cooperates with the buckle position to lock or unlock the upper cover and the base after covering, thereby improving the reliability of the covering locking between the upper cover and the base, so that the upper cover and the base are covered in place and the sealing efficiency of the whole machine is improved. The locking mechanism is composed of a button, a linkage rod and a lock buckle, one end of the linkage rod is connected to the button, and the other end of the linkage rod is connected to the lock buckle, the button and the lock buckle are connected by the linkage rod, and the lock buckle is rotatably installed on the upper cover, and the lock buckle enters or disengages from the buckle position by rotation. The lock buckle enters the buckle position and is buckled with the buckle position so that When the upper cover and the base are in the closed and locked state, the upper cover cannot be rotated and opened relative to the base, and the lock buckle disengages from the buckle position, so that the upper cover and the base are in the closed and unlocked state. At this time, the upper cover can be rotated and opened relative to the base. When the upper cover and the base are in the closed and locked state, the user presses the button to make the button act on the linkage rod, and the linkage rod is forced to drive the lock buckle to rotate, and the lock buckle is disengaged from the buckle position by rotation to unlock the locking mechanism, and the upper cover can be rotated and opened relative to the base. The button, the linkage rod and the lock buckle are all reset automatically under the action of the reset elastic member. At this time, the vacuum bag can be taken out or a new vacuum bag can be put in. When the upper cover and the base are in the closed and unlocked state, the user closes the upper cover and the base to make the lock buckle abut against the buckle position, and the lock buckle is forced to rotate to avoid the buckle position. The lock buckle rotates into the buckle position under the action of the reset elastic member and is buckled with the buckle position, so that the locking mechanism is locked, and the upper cover cannot be rotated and opened relative to the base, and the vacuum bag can be sealed at this time. The button-type locking mechanism has a simple structure and high transmission efficiency.

[0007] As an improvement, a handle is provided on the upper cover, and the button is slidably mounted on the handle. In this technical solution, by providing a handle on the upper cover, the user can drive the upper cover to rotate and open and close relative to the base by applying force on the handle, which is more comfortable and labor-saving to use. The button is slidably mounted on the handle, and the user can directly press the button to unlock the locking mechanism while holding the handle, thereby achieving one-handed one-step unlocking and opening of the upper cover, and the user does not need to operate multiple times, and one-handed operation is more convenient and labor-saving, and more comfortable to use.

[0008] As an improvement, the handle is provided with a first installation cavity adapted to the linkage rod, the first installation cavity is communicated with the upper cover, and the linkage rod passes through the first installation cavity and extends into the upper cover to connect with the lock buckle. In this technical solution, by providing a first installation cavity in the handle for installing the linkage rod, the first installation cavity is communicated with the interior of the upper cover, and the lock buckle is installed on the upper cover, so that after the linkage rod is installed in the first installation cavity, its end can extend into the upper cover to connect with the lock buckle, the installation structure is simple and reliable, and the transmission efficiency is improved; on the other hand, in this solution, it is preferred that the handle and the upper cover are an integrally formed structure, which is simple and reliable.

[0009] As an improvement, a first limiting portion for inserting a linkage rod is provided in the upper cover, and the first limiting portion limits the linkage rod along the length direction of the upper cover. In this technical solution, when the user unlocks the door, the button is pressed by the pressing force on the linkage rod, and the linkage rod is forced to slide back and forth in the first installation cavity, and the front and back direction refers to the width direction of the upper cover. The linkage rod drives the lock to rotate by sliding back and forth. In this solution, a first limiting portion that can limit the linkage rod along the length direction of the upper cover is provided in the upper cover, that is, the first limiting portion can limit the linkage rod left and right, and the left and right direction refers to the length direction of the upper cover, so as to prevent the linkage rod from shaking left and right after being forced, thereby improving the transmission efficiency.

[0010] As an improvement, a second limiting portion adapted to the linkage rod is provided in the first installation cavity, and the second limiting portion limits the linkage rod along the height direction of the upper cover. In this technical solution, by providing a second limiting portion capable of limiting the linkage rod along the height direction of the upper cover in the first installation cavity, that is, the second limiting portion can limit the linkage rod up and down, and the up and down direction refers to the height direction of the upper cover, to prevent the linkage rod from shaking up and down after being stressed, so that the linkage rod can only slide forward and backward after being stressed to drive the lock to rotate, thereby improving the transmission efficiency and reliability of the locking mechanism.

[0011] As an improvement, a first mounting portion adapted to the lock buckle is provided in the upper cover, and the lock buckle is provided with a rotating shaft, and the rotating shaft is connected to the first mounting portion so that the lock buckle is rotatably installed in the upper cover. In this technical solution, the lock buckle is rotatably installed in the upper cover, and the lock buckle is rotated into or out of the buckle position by the force of the linkage rod. By providing the first mounting portion in the upper cover and the rotating shaft on the lock buckle, and installing the rotating shaft in the first mounting portion, the lock buckle can rotate around the rotating shaft, and the mounting structure is simple and reliable, and the rotation efficiency is high.

[0012] As an improvement, one end of the lock buckle is connected to the linkage rod, and the other end of the lock buckle is matched with the buckle position. In this technical solution, the lock buckle is rotated by matching with the first mounting portion through the rotating shaft. One end of the lock buckle is connected to the linkage rod, and the other end of the lock buckle is matched with the buckle position. The linkage rod is subjected to force on one end of the lock buckle, and the lock buckle is forced to rotate around the rotating shaft, so that the other end of the lock buckle can enter or leave the buckle position. The matching structure is simple and the transmission efficiency is high.

[0013] As an improvement, one end of the lock is provided with a slide groove adapted to the linkage rod, and the end of the linkage rod cooperates with the slide groove to drive the lock to rotate. In this technical solution, the linkage rod slides under the force of the button to drive the lock to rotate. By providing a slide groove for the end of the linkage rod to pass through at one end of the lock, the linkage rod has a movement space through the slide groove. After the linkage rod is subjected to force, it can move in the slide groove, preventing the linkage rod and the lock from being stuck in relative movement, thereby improving transmission efficiency and service life.

[0014] As an improvement, the lock buckle is provided with a guide slope matched with the buckle position, and the lock buckle is subjected to force to abut against the buckle position through the guide slope to rotate into the buckle position so that the upper cover and the base are covered and locked. In this technical solution, during the process of covering the upper cover and the base, the lock buckle is subjected to force to abut against the buckle position to rotate to avoid the buckle position, and the lock buckle is rotated into the buckle position under the action of the reset elastic member and locked with the buckle position, so that the locking mechanism is locked. By providing a guide slope matched with the buckle position on the lock buckle, the lock buckle abuts against the buckle position through the guide slope, and the lock buckle rotates into the buckle position under the guidance of the guide slope, the rotation efficiency is improved, and the locking is more labor-saving.

[0015] As an improvement, one end of the reset elastic member is connected to the upper cover, and the other end of the reset elastic member is connected to the linkage rod. In this technical solution, the locking mechanism is connected to the reset elastic member, and the reset elastic member enables the button, linkage rod and lock buckle to be reset. The button, linkage rod and lock buckle can all be connected to the reset elastic member. In this solution, the linkage rod is preferably connected to the reset elastic member, and one end of the reset elastic member is connected to the upper cover, and the other end is connected to the linkage rod. When the user presses the button, the button is subjected to force on the linkage rod to make the linkage rod slide, and the reset elastic member is elastically deformed under the action of the linkage rod, and the linkage rod drives the lock buckle to rotate and disengage from the buckle position. At this time, the locking mechanism is unlocked, and the upper cover is in a closed position relative to the base. When the user releases the button, the linkage rod slides and resets under the action of the reset elastic part, the linkage rod drives the button to reset, and the linkage rod drives the lock buckle to rotate and reset. When the user applies force to the handle to make the upper cover and the base cover together, the lock buckle is subjected to force and abuts against the buckle position, and the lock buckle rotates to avoid the buckle position. The lock buckle drives the linkage rod to slide, causing the reset elastic part to elastically deform, and the lock buckle rotates into the buckle position without being subjected to abutment force. The reset elastic part resets the linkage rod and the lock buckle, so that the locking mechanism is locked, and the upper cover is in a closed and locked state relative to the base. The overall structure is simple and the transmission efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention discloses a three-dimensional structural schematic diagram of a vacuum packaging machine.

[0017] Figure 2 The present invention discloses a cross-sectional structural schematic diagram of a vacuum packaging machine.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the locking mechanism and the resetting elastic member in the present disclosure.

[0019] Figure 4 It is a perspective structural diagram of the upper cover in the present disclosure.

[0020] Figure 5 It is a schematic cross-sectional structural diagram of the upper cover and the locking mechanism in the present disclosure.

[0021] As shown in the figure: 1. upper cover; 11. handle; 111. first installation cavity; 112. second limiting portion; 12. first limiting portion; 13. first installation portion; 2. base; 21. buckle position; 3. locking mechanism; 31. button; 32. linkage rod; 33. lock; 331. rotating shaft; 332. slide groove; 333. guide slope; 4. reset elastic member. DETAILED DESCRIPTION

[0022] In order to better understand the present application, a more detailed description of various aspects of the present application will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same figure numerals refer to the same elements.

[0023] In the drawings, the thickness, size and shape of objects have been slightly exaggerated for ease of explanation. The drawings are only examples and are not drawn strictly to scale.

[0024] It should also be understood that the terms “comprises,” “including,” “has,” “contains,” and “comprising,” when used in this specification, indicate the presence of the described features, integers, steps, operations, elements, and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, and / or combinations thereof.

[0025] like Figures 1 to 5 As shown, the present application discloses a vacuum packaging machine, comprising an upper cover 1 and a base 2, which are rotatably connected to each other. The vacuum packaging machine is configured to be composed of the upper cover 1 and the base 2 which are rotatably connected to each other. When actually used, a vacuum packaging bag to be packaged is placed on the base 2, and the upper cover 1 is rotated so that the upper cover 1 covers the base 2, so that the vacuum packaging bag to be packaged is pressed between the upper cover 1 and the base 2, and the gas in the vacuum packaging bag to be packaged is extracted by a vacuum device before sealing.

[0026] The upper cover 1 is provided with a locking mechanism 3, which includes a button 31, a linkage rod 32 and a lock buckle 33. One end of the linkage rod 32 is connected to the button 31, and the other end of the linkage rod 32 is connected to the lock buckle 33. The base 2 is provided with a buckle position 21 adapted to the lock buckle 33. By providing the locking mechanism 3 on the upper cover 1 and the buckle position 21 on the base 2, the locking mechanism 3 cooperates with the buckle position 21 to lock or unlock the upper cover 1 and the base 2 after they are closed, thereby improving the closing and locking reliability between the upper cover 1 and the base 2, so that the upper cover 1 and the base 2 are closed in place, and the sealing efficiency of the whole machine is improved;

[0027] The lock catch 33 is rotatably mounted on the upper cover 1, and the button 31 is pressed to act on the linkage rod 32, and the linkage rod 32 drives the lock catch 33 to rotate and disengage from the buckle position 21 so that the upper cover 1 and the base 2 are covered and unlocked. The locking mechanism 3 is composed of a button 31, a linkage rod 32 and a lock catch 33. One end of the linkage rod 32 is connected to the button 31, and the other end of the linkage rod 32 is connected to the lock catch 33. The button 31 and the lock catch 33 are connected through the linkage rod 32. The lock catch 33 is rotatably mounted on the upper cover 1, and the lock catch 33 enters or disengages from the buckle position 21 by rotation. The lock catch 33 enters the buckle position 21 and is locked with the buckle position 21 so that the upper cover 1 and the base 2 are in a covered and locked state. At this time, the upper cover 1 cannot be rotated to open relative to the base 2, and the lock catch 33 is disengaged from the buckle position 21 so that the upper cover 1 and the base 2 are in a covered and unlocked state. At this time, the upper cover 1 can be rotated to open relative to the base 2;

[0028] The locking mechanism 3 is connected to a reset elastic member 4, and the button 31, the linkage rod 32 and the lock buckle 33 are all reset under the action of the reset elastic member 4. When the upper cover 1 and the base 2 are in a closed and locked state, the user presses the button 31 so that the button 31 acts on the linkage rod 32, and the linkage rod 32 is forced to drive the lock buckle 33 to rotate, and the lock buckle 33 is rotated to disengage from the buckle position 21 to unlock the locking mechanism 3, and the upper cover 1 can be rotated to open relative to the base 2, and the button 31, the linkage rod 32 and the lock buckle 33 are all reset by themselves under the action of the reset elastic member 4 , at this time, the vacuum bag can be taken out or a new vacuum bag can be put in. When the upper cover 1 and the base 2 are in the closed and unlocked state, the user closes the upper cover 1 and the base 2 so that the lock buckle 33 abuts against the buckle position 21. The lock buckle 33 is rotated under the force to avoid the buckle position 21. Under the action of the reset elastic member 4, the lock buckle 33 rotates into the buckle position 21 and snaps with the buckle position 21, so that the locking mechanism 3 is locked. The upper cover 1 cannot be rotated to open relative to the base 2. At this time, the vacuum bag can be sealed. The button 31-type lock buckle 33 has a simple structure and high transmission efficiency.

[0029] More specifically, Figure 1 As shown, a handle 11 is provided on the upper cover 1, and a button 31 is slidably installed on the handle 11. By providing the handle 11 on the upper cover 1, the user can drive the upper cover 1 to rotate and open and close relative to the base 2 by applying force to the handle 11, which is more comfortable and labor-saving to use. The button 31 is slidably installed on the handle 11, and the user can directly press the button 31 to unlock the locking mechanism 3 while holding the handle 11, thereby realizing one-handed one-step unlocking and opening of the upper cover 1, and the user does not need to operate multiple times, and one-handed operation is more convenient and labor-saving, and the use comfort is better.

[0030] More specifically, Figure 4 and Figure 5As shown, the handle 11 is provided with a first installation cavity 111 adapted to the linkage rod 32, the first installation cavity 111 is communicated with the upper cover 1, the linkage rod 32 passes through the first installation cavity 111 and extends into the upper cover 1 to be connected with the lock buckle 33. By providing the first installation cavity 111 in the handle 11 for installing the linkage rod 32, the first installation cavity 111 is communicated with the interior of the upper cover 1, and the lock buckle 33 is installed on the upper cover 1, so that after the linkage rod 32 is installed in the first installation cavity 111, its end can extend into the upper cover 1 to be connected with the lock buckle 33, the installation structure is simple and reliable, and the transmission efficiency is improved; on the other hand, in this scheme, the handle 11 and the upper cover 1 are preferably integrally formed, and the structure is simple and reliable.

[0031] More specifically, Figure 4 and Figure 5 As shown, a first limiting portion 12 for passing the linkage rod 32 is provided in the upper cover 1, and the first limiting portion 12 limits the linkage rod 32 along the length direction of the upper cover 1. When the user unlocks the lock, the button 31 is pressed, and the button 31 is acted on the linkage rod 32 by the pressing force. The linkage rod 32 is forced to slide back and forth in the first mounting cavity 111, and the front and back direction refers to the width direction of the upper cover 1. The linkage rod 32 drives the lock buckle 33 to rotate by sliding back and forth. In this solution, a first limiting portion 12 that can limit the linkage rod 32 along the length direction of the upper cover 1 is provided in the upper cover 1, that is, the first limiting portion 12 can limit the linkage rod 32 left and right, and the left and right direction refers to the length direction of the upper cover 1, so as to prevent the linkage rod 32 from shaking left and right after being forced, thereby improving the transmission efficiency.

[0032] More specifically, Figure 4 and Figure 5 As shown, a second limiting portion 112 adapted to the linkage rod 32 is provided in the first installation cavity 111, and the second limiting portion 112 limits the linkage rod 32 along the height direction of the upper cover 1. By providing the second limiting portion 112 capable of limiting the linkage rod 32 along the height direction of the upper cover 1 in the first installation cavity 111, that is, the second limiting portion 112 can limit the linkage rod 32 up and down, and the up and down direction refers to the height direction of the upper cover 1, to prevent the linkage rod 32 from shaking up and down after being subjected to force, so that the linkage rod 32 can only slide back and forth after being subjected to force to drive the lock buckle 33 to rotate, thereby improving the transmission efficiency and reliability of the locking mechanism 3.

[0033] More specifically, Figures 2 to 4As shown, a first mounting portion 13 adapted to the lock buckle 33 is provided in the upper cover 1, and the lock buckle 33 is provided with a rotating shaft 331. The rotating shaft 331 is connected to the first mounting portion 13 so that the lock buckle 33 is rotatably installed in the upper cover 1. The lock buckle 33 is rotatably installed in the upper cover 1, and the lock buckle 33 is subjected to the force of the linkage rod 32 to rotate into or out of the buckle position 21. By arranging the first mounting portion 13 in the upper cover 1 and arranging the rotating shaft 331 on the lock buckle 33, and installing it in the first mounting portion 13 through the rotating shaft 331, the lock buckle 33 can rotate around the rotating shaft 331, and the mounting structure is simple and reliable, and the rotation efficiency is high.

[0034] More specifically, Figure 2 and Figure 3 As shown, one end of the lock buckle 33 is connected to the linkage rod 32, and the other end of the lock buckle 33 cooperates with the buckle position 21. The lock buckle 33 cooperates with the first mounting portion 13 through the rotating shaft 331 to realize rotation. One end of the lock buckle 33 is connected to the linkage rod 32, and the other end of the lock buckle 33 cooperates with the buckle position 21. The linkage rod 32 is subjected to force on one end of the lock buckle 33, and the lock buckle 33 is forced to rotate around the rotating shaft 331, so that the other end of the lock buckle 33 can enter or leave the buckle position 21. The matching structure is simple and the transmission efficiency is high.

[0035] More specifically, Figure 2 and Figure 3 As shown, one end of the lock buckle 33 is provided with a slide groove 332 adapted to the linkage rod 32, and the end of the linkage rod 32 cooperates with the slide groove 332 to drive the lock buckle 33 to rotate. The linkage rod 32 slides under the action of the button 31 to drive the lock buckle 33 to rotate. By providing a slide groove 332 at one end of the lock buckle 33 for the end of the linkage rod 32 to pass through, the linkage rod 32 has a movement space through the slide groove 332. After the linkage rod 32 is subjected to force, it can move in the slide groove 332, thereby preventing the linkage rod 32 and the lock buckle 33 from being stuck due to relative movement, thereby improving the transmission efficiency and the service life.

[0036] More specifically, Figure 2 and Figure 3 As shown, the lock buckle 33 is provided with a guiding inclined surface 333 adapted to the buckle position 21. The lock buckle 33 is subjected to force to abut against the buckle position 21 through the guiding inclined surface 333 to rotate into the buckle position 21 so that the upper cover 1 and the base 2 are covered and locked. During the covering process of the upper cover 1 and the base 2, the lock buckle 33 is subjected to force to abut against the buckle position 21 to rotate to avoid the buckle position 21. Under the action of the reset elastic member 4, the lock buckle 33 rotates into the buckle position 21 and is locked with the buckle position 21, so that the locking mechanism 3 is locked. By providing a guiding inclined surface 333 that matches the buckle position 21 on the lock buckle 33, the lock buckle 33 abuts against the buckle position 21 through the guiding inclined surface 333, and the lock buckle 33 rotates into the buckle position 21 under the guiding action of the guiding inclined surface 333, thereby improving the rotation efficiency and making the locking more labor-saving.

[0037] More specifically, Figure 2 and Figure 3 As shown, one end of the reset elastic member 4 is connected to the upper cover 1, and the other end of the reset elastic member 4 is connected to the linkage rod 32. When the user presses the button 31, the button 31 is subjected to force on the linkage rod 32 to make the linkage rod 32 slide. The reset elastic member 4 is elastically deformed under the action of the linkage rod 32, and the linkage rod 32 drives the lock buckle 33 to rotate and disengage from the buckle position 21. At this time, the locking mechanism 3 is unlocked, and the upper cover 1 is in a closed and unlocked state relative to the base 2. When the user releases the button 31, the linkage rod 32 slides and resets under the action of the reset elastic member 4, and the linkage rod 32 drives the button 31 to rotate and disengage from the buckle position 21. The button 31 is reset, and the linkage rod 32 drives the lock buckle 33 to rotate and reset. When the user applies force to the handle 11 to cover the upper cover 1 and the base 2, the lock buckle 33 is forced to abut against the buckle position 21, and the lock buckle 33 rotates to avoid the buckle position 21. The lock buckle 33 drives the linkage rod 32 to slide, causing the reset elastic member 4 to elastically deform, and the lock buckle 33 rotates into the buckle position 21 without being subjected to the abutment force. The reset elastic member 4 resets the linkage rod 32 and the lock buckle 33, so that the locking mechanism 3 is locked, and the upper cover 1 is in a closed and locked state relative to the base 2. The overall structure is simple and the transmission efficiency is high.

[0038] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. A vacuum packaging machine, comprising an upper cover (1) and a base (2), wherein the upper cover (1) and the base (2) are rotatably connected, characterized in that: The upper cover (1) is provided with a locking mechanism (3), the locking mechanism (3) comprising a button (31), a linkage rod (32) and a lock buckle (33), one end of the linkage rod (32) is connected to the button (31), the other end of the linkage rod (32) is connected to the lock buckle (33), a buckle position (21) adapted to the lock buckle (33) is provided on the base (2), the lock buckle (33) is rotatably mounted on the upper cover (1), the button (31) is acted on the linkage rod (32) by a pressing force, and the lock buckle (33) is driven by the linkage rod (32) to rotate and disengage from the buckle position (21), so that the upper cover (1) and the base (2) are unlocked, and the locking mechanism (3) is connected to a reset elastic member (4), and the button (31), the linkage rod (32) and the lock buckle (33) are all reset under the action of the reset elastic member (4).

2. A vacuum packaging machine according to claim 1, characterized in that: The upper cover (1) is provided with a handle (11), and the button (31) is slidably mounted on the handle (11).

3. A vacuum packaging machine according to claim 2, characterized in that: The handle (11) is provided with a first installation cavity (111) adapted to the linkage rod (32); the first installation cavity (111) is communicated with the upper cover (1); the linkage rod (32) passes through the first installation cavity (111) and extends into the upper cover (1) to be connected with the lock buckle (33).

4. A vacuum packaging machine according to claim 3, characterized in that: A first limiting portion (12) for passing the linkage rod (32) is arranged inside the upper cover (1), and the first limiting portion (12) limits the linkage rod (32) along the length direction of the upper cover (1).

5. A vacuum packaging machine according to claim 3, characterized in that: A second limiting portion (112) adapted to the linkage rod (32) is arranged in the first installation cavity (111), and the second limiting portion (112) limits the linkage rod (32) along the height direction of the upper cover (1).

6. A vacuum packaging machine according to claim 1, characterized in that: The upper cover (1) is provided with a first mounting portion (13) adapted to the lock catch (33), and the lock catch (33) is provided with a rotating shaft (331), and the rotating shaft (331) is connected to the first mounting portion (13) so that the lock catch (33) is rotatably mounted in the upper cover (1).

7. A vacuum packaging machine according to claim 6, characterized in that: One end of the lock buckle (33) is connected to the linkage rod (32), and the other end of the lock buckle (33) is matched with the buckle position (21).

8. A vacuum packaging machine according to claim 7, characterized in that: One end of the lock buckle (33) is provided with a slide groove (332) adapted to the linkage rod (32), and the end of the linkage rod (32) cooperates with the slide groove (332) to drive the lock buckle (33) to rotate.

9. The vacuum packaging machine according to claim 1, characterized in that: The lock buckle (33) is provided with a guide inclined surface (333) adapted to the buckle position (21), and the lock buckle (33) is subjected to force to abut against the buckle position (21) through the guide inclined surface (333) to rotate into the buckle position (21) so that the upper cover (1) and the base (2) are covered and locked.

10. The vacuum packaging machine according to claim 1, characterized in that: One end of the resetting elastic member (4) is connected to the upper cover (1), and the other end of the resetting elastic member (4) is connected to the linkage rod (32).

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