A communication cabinet door lock mechanism and the communication cabinet thereof

Abstract

This invention provides a communication cabinet door lock mechanism and the corresponding communication cabinet, belonging to the field of mechanical technology. It solves the problem of poor stability in existing technologies. The door lock mechanism includes a lock, a locking rod, a positioning component, a insertion rod assembly, and a lock hole located on the cabinet body. The lock is fixed to the cabinet door, the upper end of the locking rod is movably connected to the lock, the positioning component is hinged to the cabinet door, the middle part of the locking rod is connected to the positioning component, and the insertion rod assembly is connected to the cabinet door and adjacent to the lock hole. When the lock is in the locked state, the locking rod moves downwards, allowing the insertion rod assembly to embed into the lock hole. When the lock is in the unlocked state, the locking rod can disengage from the insertion rod assembly, and the insertion rod assembly tends to move upwards and disengage from the lock hole. This door lock mechanism has high stability.

Description

Technical Field

[0001] This invention belongs to the field of mechanical technology and relates to a communication cabinet door lock mechanism and the communication cabinet thereof. Background Technology

[0002] A communication cabinet, also known as a network cabinet, server cabinet, or IT cabinet, is a specialized cabinet used to store and manage telecommunications and information technology equipment such as communication devices, servers, network switches, routers, and patch panels. It not only provides physical protection but also ensures convenient heat dissipation, cabling management, and maintenance of the equipment.

[0003] A communication cabinet typically consists of a hollow cabinet body with an opening on the side and a door that can be opened and closed. The door is also equipped with a lock to ensure it is securely closed to the cabinet body.

[0004] Because the communication cabinet is relatively large, a locking rod is connected to the lock to improve locking stability. When the lock is activated, it moves the locking rod. The locking rod detaches from the cabinet body to unlock the cabinet door, and the locking rod is embedded into the cabinet body to lock the cabinet door.

[0005] Because the locking bar is relatively long, it may bend during use, making it unable to be stably inserted into the cabinet and resulting in poor stability.

[0006] Chinese Patent Publication No. CN208106130U discloses a simple and easy-to-operate electrical cabinet door lock device, including an electrical cabinet. Electrical cabinet doors are installed on both sides of the front of the electrical cabinet. An electrical cabinet door lock is installed in the middle of the right side of each electrical cabinet door. The electrical cabinet door lock is fixed to the electrical cabinet door by a door lock mounting plate. A lock cover is installed above the front end of the electrical cabinet door lock. A lock hole is provided inside the middle of the front end of the electrical cabinet door lock. A threaded lock pin is installed in the middle of the electrical cabinet door lock, and a door lock fixing nut is fixed above the threaded lock pin. A lock cylinder shaft is installed inside the electrical cabinet door lock, and a lock cylinder shaft cap is installed at the end of the lock cylinder shaft. A drive gear is installed in the middle of the lock cylinder shaft. An upper rack is connected to the left side of the drive gear, and an upper locking rod is connected to the other end of the upper rack. A lower rack is connected to the right side of the drive gear, and a lower locking rod is connected to the other end of the lower rack.

[0007] As can be seen, the locking rod in the above patent is still long and rod-shaped, and it is easy to bend during use, resulting in poor locking stability between the cabinet door and the cabinet body.

[0008] In addition, the assembly efficiency of the cabinets needs to be improved, mainly because the assembly of the cabinet structure lacks precise positioning, which affects the quality of the finished cabinets. Summary of the Invention

[0009] The purpose of this invention is to address the aforementioned problems in the prior art by providing a communication cabinet door lock mechanism and communication cabinet with high stability and compact structure.

[0010] The objective of this invention can be achieved through the following technical solutions:

[0011] A communication cabinet door lock mechanism is disclosed. The communication cabinet includes a cabinet body and a cabinet door. The cabinet body has an internal cavity and a side opening. The cabinet door is hinged to the side opening of the cabinet body. The door lock mechanism includes a lock, a lock rod, a positioning component, a plug rod assembly, and a lock hole located on the cabinet body. The lock is fixedly connected to the cabinet door. The upper end of the lock rod is movably connected to the lock. The positioning component is hinged to the cabinet door. The middle part of the lock rod is connected to the positioning component. The plug rod assembly is connected to the cabinet door and is adjacent to the lock hole. When the lock is in the locked state, the lock rod moves downward and allows the plug rod assembly to be inserted into the lock hole. When the lock is in the unlocked state, the lock rod can disengage from the plug rod assembly. The plug rod assembly has a tendency to move upward and disengage from the lock hole.

[0012] In the aforementioned communication cabinet door lock mechanism, the positioning component includes a base plate, a positioning cylinder, a ball, and a spring. The positioning cylinder is sleeved in the middle of the lock rod and is fixed to the base plate. The base plate is hinged to the inside of the cabinet door. The inner side of the positioning cylinder has a recessed positioning hole. The spring and the ball are located in the positioning hole. The outer side of the lock rod has an annular recessed positioning groove. Under the elastic force of the spring, the ball tends to embed into the positioning groove.

[0013] In the aforementioned communication cabinet door lock mechanism, the positioning hole, the ball, and the spring together form a positioning unit. There are several positioning units, which are evenly distributed circumferentially inside the positioning cylinder.

[0014] In the aforementioned communication cabinet door lock mechanism, there are several positioning slots, which are evenly distributed along the length of the lock rod.

[0015] In the aforementioned communication cabinet door lock mechanism, the positioning groove matches the outer side of the ball and the two surfaces are in contact.

[0016] In the aforementioned communication cabinet door lock mechanism, the insertion rod assembly includes a guide plate one, a guide plate two, an insertion rod, and a spring two. The guide plate one and the guide plate two are both fixed to the cabinet door, with the guide plate one located above the guide plate two. The insertion rod passes through the guide plate one and the guide plate two in sequence. The spring two is sleeved on the insertion rod, and the insertion rod tends to move upward under the elastic force of the spring two.

[0017] In the aforementioned communication cabinet door lock mechanism, the insert rod has a protruding retaining edge, and the two ends of the second spring act on the retaining edge and the second guide plate, respectively. Under the elastic force of the second spring, the retaining edge tends to abut against the first guide plate.

[0018] In the aforementioned communication cabinet door lock mechanism, the upper end of the insertion rod has a disc-shaped contact plate, and the lower end of the locking rod is spherical and abuts against the contact plate.

[0019] In the aforementioned communication cabinet door lock mechanism, the locking rod, positioning component, insertion rod component, and lock hole form a locking unit. There are two locking units, which are symmetrically arranged at the upper and lower parts of the lock, respectively.

[0020] A communication cabinet includes a door lock mechanism and a cabinet body comprising four vertical support profiles and four horizontal positioning profiles. Two of the four horizontal positioning profiles are located at the bottom of the cabinet body, and the remaining two are located at the top of the cabinet body. Two of the vertical support profiles and two of the horizontal positioning profiles, which are distributed vertically, form a first rectangular support through multi-directional positioning. The remaining two vertical support profiles and the remaining two horizontal positioning profiles form a second rectangular support through multi-directional positioning. The first rectangular support and the second rectangular support are connected by lateral connecting profiles to form the main frame of the cabinet body. Covering panels are provided on the bottom, top, and three side surfaces of the main frame of the cabinet body, and the cabinet door is provided on the remaining side surface.

[0021] Compared with existing technologies, this door lock mechanism is supported and positioned by a positioning component in the middle of the lock rod. Therefore, the lock rod can not only move stably, but also lock its position after moving, thus ensuring that the cabinet door in the communication cabinet is stably in the open or closed state, and its stability is relatively high.

[0022] Meanwhile, since the insertion rod assembly does not move with the tilting of the locking rod, the insertion rod in the assembly will only move smoothly up and down under the pushing action of the locking rod, ultimately ensuring that the insertion rod can be stably inserted into the lock hole or dislodged from the lock hole, further improving its stability.

[0023] In addition, since the positioning component and the plug component are both located inside the cabinet door, they occupy relatively little space, and these components are not exposed on the outside of the communication cabinet. Therefore, the structure is relatively compact and has high practical value. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the communication cabinet.

[0025] Figure 2 This is a cross-sectional structural diagram of the communication cabinet.

[0026] Figure 3 This is a structural diagram of the connection between the positioning component and the plug-in component in this door lock mechanism.

[0027] Figure 4 This is a partial three-dimensional structural diagram of the communication cabinet.

[0028] Figure 5This is a schematic diagram of the vertical support profile structure of this communication cabinet.

[0029] Figure 6 This is a schematic diagram of the horizontal positioning profile structure of this communication cabinet.

[0030] Figure 7 This is a schematic diagram of the lateral connection profile structure of this communication cabinet.

[0031] In the diagram, 1. Cabinet body; 1a. Lock hole; 2. Cabinet door; 3. Lock; 4. Locking rod; 4a. Positioning groove; 5. Base plate; 6. Positioning cylinder; 6a. Positioning hole; 7. Ball; 8. Spring 1; 9. Guide plate 1; 10. Guide plate 2; 11. Insert rod; 11a. Stop edge; 11b. Contact plate; 12. Spring 2; 13. Vertical support profile; 130. First U-shaped main body; 131. First X positioning part; 132. First Z positioning part; 133. Slotted tongue positioning hole; 14. Horizontal positioning profile; 140. Second U-shaped main body; 141. First snap-in part; 142. Second X positioning part; 143. Second Y-direction positioning part; 15. Lateral connecting profile; 150. Positioning tongue; 16. Covering panel. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that when a component is said to be "mounted on" another component, it can be directly mounted on the other component or may be interspersed with a component. When a component is said to be "set on" another component, it can be directly set on the other component or may be interspersed with a component. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or may be interspersed with a component.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] Example 1, such as Figure 1As shown, the communication cabinet includes a cabinet body 1 and a cabinet door 2. The cabinet body 1 has an internal cavity and an opening on the side. The cabinet door 2 is hinged to the opening on the side of the cabinet body 1.

[0036] When the communication cabinet is in normal use, cabinet door 2 is closed. When the communication cabinet needs to be inspected or maintained, cabinet door 2 can be opened.

[0037] like Figure 1 and Figure 2 and Figure 3 As shown, this door lock mechanism includes a lock 3, a lock rod 4, a positioning component, a plug rod assembly, and a lock hole 1a located on the cabinet body 1. The lock 3 is fixedly connected to the cabinet door 2. The upper end of the lock rod 4 is movably connected to the lock 3. The positioning component is hinged to the cabinet door 2. The middle part of the lock rod 4 is connected to the positioning component. The plug rod assembly is connected to the cabinet door 2 and is adjacent to the lock hole 1a. When the lock 3 is in the locked state, the lock rod 4 moves down and allows the plug rod assembly to be inserted into the lock hole 1a. When the lock 3 is in the unlocked state, the lock rod 4 can disengage from the plug rod assembly. The plug rod assembly has a tendency to move up and disengage from the lock hole 1a.

[0038] Lock type 3 is the existing rotary lock, a mechanical device that locks and unlocks through rotation. This type of lock is widely used in various scenarios, such as doors, cabinets, drawers, and mechanical equipment, and is characterized by its simple structure and ease of use. In other words, a rotary lock is a mechanical device that controls the movement of the lock cylinder or bolt by rotating a key or knob, thereby achieving locking and unlocking functions.

[0039] Since lock 3 is an existing rotary lock, its function is only roughly outlined in the embodiment, and its technical features will not be described in detail.

[0040] One end of the locking rod 4 is connected to the lock cylinder of the lock 3, so the locking rod 4 can move along with the lock cylinder when it rotates.

[0041] The positioning component, being connected to the middle of the locking lever 4, serves two functions:

[0042] Firstly, since the locking rod 4 is relatively long, the positioning cylinder 6 supports the middle of the locking rod 4 to prevent the locking rod 4 from bending and deforming due to its excessive length.

[0043] Secondly, the positioning component has a positioning function, that is, after the locking rod 4 moves, it can lock the connection between the locking rod 4 and the positioning component, ensuring that the entire communication cabinet can be stably in the locked or unlocked state.

[0044] The insertion rod assembly is located between the keyhole 1a and the lower end of the locking rod 4. Therefore, when the locking rod 4 moves downward, it can push the insertion rod assembly and cause the insertion rod assembly to embed into the keyhole 1a, achieving stable locking. Conversely, when the locking rod 4 is moved upward by the lock 3, the insertion rod assembly is no longer squeezed by the locking rod 4, and the insertion rod assembly resets and disengages from the keyhole 1a, achieving stable unlocking.

[0045] The positioning assembly includes a base plate 5, a positioning cylinder 6, a ball 7, and a spring 8. The positioning cylinder 6 is sleeved on the middle of the locking rod 4 and is fixed to the base plate 5. The base plate 5 is hinged to the inside of the cabinet door 2. The inner side of the positioning cylinder 6 has a recessed positioning hole 6a. The spring 8 and the ball 7 are located in the positioning hole 6a. The outer side of the locking rod 4 has an annular recessed positioning groove 4a. Under the elastic force of the spring 8, the ball 7 tends to embed into the positioning groove 4a.

[0046] The positioning cylinder 6 is hinged to the cabinet door 2 via the base plate 5, and the locking rod 4 passes through the positioning cylinder 6 in the middle. This structure not only provides stable support for the middle of the locking rod 4, but also allows the locking rod 4 to tilt slightly to its side during movement. This structure can also adapt to the movement of the locking rod 4 and prevent the locking rod 4 from getting stuck with the positioning cylinder 6 when it makes the above-mentioned movements.

[0047] Under the elastic force of spring 8, the ball 7 is embedded in the positioning groove 4a, which enables a stable locking connection between the locking rod 4 and the positioning cylinder 6. Of course, the force applied by the lock 3 can cause the ball 7 to stably disengage from the positioning groove 4a.

[0048] The aforementioned positioning hole 6a, ball 7, and spring 8 form a positioning unit. There are several positioning units, which are evenly distributed circumferentially inside the positioning cylinder 6.

[0049] Multiple positioning units can effectively improve the positioning stability between the locking rod 4 and the positioning cylinder 6.

[0050] The number of positioning grooves 4a is several, and the positioning grooves 4a are evenly distributed along the length direction of the locking rod 4.

[0051] Multiple positioning slots 4a enable the locking lever 4 to be locked in different positions.

[0052] The positioning groove 4a matches the outer side of the ball 7 and the two are in surface contact.

[0053] This structure improves the positioning stability of the locking bar 4.

[0054] The insertion rod assembly includes a guide plate 9, a guide plate 10, an insertion rod 11, and a spring 12. The guide plate 9 and the guide plate 10 are both fixed to the cabinet door 2, with the guide plate 9 located above the guide plate 10. The insertion rod 11 passes through the guide plate 9 and the guide plate 10 in sequence. The spring 12 is sleeved on the insertion rod 11, and the insertion rod 11 tends to move upward under the elastic force of the spring 12.

[0055] Guide plate 9 and guide plate 10 ensure smooth up-and-down movement of the insertion rod 11. This structure allows the insertion rod 11 to be stably inserted into or stably disengaged from the lock hole 1a.

[0056] Of course, under the elastic force of spring 12, the insertion rod 11 tends to move upward, which means that the cabinet door 2 can be opened stably in the initial state.

[0057] The insert rod 11 has a protruding retaining edge 11a. The two ends of the second spring 12 act on the retaining edge 11a and the second guide plate 10 respectively. Under the elastic force of the second spring 12, the retaining edge 11a tends to abut against the first guide plate 9.

[0058] The retaining edge 11a has two functions:

[0059] Firstly, the insertion rod 11 is limited to prevent it from detaching from the guide rod 9 and the guide rod 10.

[0060] Secondly, the retaining edge 11a is used to block the upper end of the second spring 12 and to stably position the second spring 12.

[0061] The upper end of the insertion rod 11 has a disc-shaped contact plate 11b, and the lower end of the locking rod 4 is spherical and abuts against the contact plate 11b.

[0062] Because the lower end of the locking lever 4 will displace laterally during its movement, the contact plate 11b is relatively large in this design, thus ensuring stable contact between the locking lever 4 and the contact plate 11b even if the locking lever 4 displaces.

[0063] The aforementioned locking rod 4, positioning component, insertion rod component, and lock hole 1a form a locking unit. There are two locking units, which are symmetrically arranged at the upper and lower parts of the lock 3, respectively.

[0064] The two locking units are located at the top and bottom of the lock 3, respectively. This structure can effectively improve the stability of the cabinet door 1 when it is closed and locked.

[0065] Because the locking rod is supported and positioned by the positioning component in the middle, the locking rod can not only move stably, but also lock in position after moving, thus ensuring that the cabinet door in the communication cabinet is stably in the open or closed state, and its stability is relatively high.

[0066] Meanwhile, since the insertion rod assembly does not move with the tilting of the locking rod, the insertion rod in the assembly will only move smoothly up and down under the pushing action of the locking rod, ultimately ensuring that the insertion rod can be stably inserted into the lock hole or dislodged from the lock hole, further improving its stability.

[0067] In addition, since the positioning component and the plug component are both located inside the cabinet door, they occupy relatively little space, and these components are not exposed on the outside of the communication cabinet. Therefore, the structure is relatively compact and has high practical value.

[0068] Both the positioning cylinder and the base plate are made of PVC and are a single integrated structure, with the base plate in surface contact with the cabinet door. Because both the positioning cylinder and the base plate are made of PVC, the frictional resistance between the locking rod and the positioning cylinder is relatively low, as is the frictional force between the base plate and the inner side of the cabinet door.

[0069] The above structure ensures that the locking rod moves smoothly relative to the positioning cylinder and that the base plate can swing appropriately relative to the cabinet door around its hinge point.

[0070] Example 2, as Figures 4-7 As shown, this embodiment provides a communication cabinet, which includes the communication cabinet door lock mechanism of Embodiment 1. The cabinet body 1 includes four vertical support profiles 13 and four horizontal positioning profiles 14. The four vertical support profiles 13 are arranged in a rectangular array and distributed along a first direction Y. The four horizontal positioning profiles 14 are distributed along a second direction X. The lateral connecting profiles 15 are distributed along a third direction Z.

[0071] Two of the four horizontal positioning profiles 14 are located at the bottom of the cabinet 1, and the remaining two horizontal positioning profiles 14 are located at the top of the cabinet 1. Two vertical support profiles 13 and two horizontal positioning profiles 14 distributed vertically form a first rectangular bracket through multi-directional positioning. The remaining two vertical support profiles 13 and the remaining two horizontal positioning profiles 14 form a second rectangular bracket through multi-directional positioning. The corresponding two horizontal positioning profiles 14 on the first rectangular bracket and the second rectangular bracket are symmetrically distributed vertically.

[0072] Specifically, the vertical support profile 13 of this embodiment includes a first U-shaped body 130 and a first X positioning part 131 connected to both sides of the first U-shaped body 130 and extending into the first U-shaped body 130. Each first X positioning part 131 is provided with a first Z positioning part 132 that is vertically connected to the first X positioning part 131 and extends into the first U-shaped body 130. The horizontal positioning profile 14 includes a second U-shaped body 140. At both ends of the second U-shaped body 140, there are first inserting portions 141 that are inserted into the first U-shaped body 130 from the corresponding ends of the first U-shaped body 130. The outer end of the first inserting portion 141 abuts against the inner bottom surface of the first U-shaped body 130, and the two outer side walls of the first inserting portion 141 abut against the first Z positioning portion 132. On both sides of the second U-shaped body 140, there are second X positioning portions 142 whose ends abut against the sides of the corresponding first X positioning portions 131. The second X positioning portions 142 have a right-angle structure. The second U-shaped body 140 also has second Y positioning portions 143 that are distributed along the third direction Z and abut against the ends of the corresponding first X positioning portions 131. The above are assembled to form a first rectangular bracket and a second rectangular bracket through multi-directional positioning.

[0073] After the first rectangular bracket and the second rectangular bracket are assembled, the first rectangular bracket and the second rectangular bracket are connected by the lateral connecting profile 15 to form the main frame of the cabinet. The lateral connecting profile 15 is connected to the first rectangular bracket and the second rectangular bracket by fasteners and other means.

[0074] The above structure can omit the fasteners required when forming the first and second rectangular supports, thereby reducing costs. At the same time, it can ensure that the first and second rectangular supports can be precisely assembled, thus ensuring the stability of the structure.

[0075] Preferably, the vertical support profile 13 is provided with a groove tongue positioning hole 133, and the two ends of the lateral connecting profile 15 are respectively provided with positioning tongue pieces 150 inserted into the groove tongue positioning hole 133. The positioning tongue pieces 150 are pre-inserted into the groove tongue positioning hole 133, thereby restricting the position of the corresponding two vertical support profiles 13 distributed along the third direction Z, thereby further improving the assembly efficiency.

[0076] Covering panels 16 are provided at the bottom, top, and three side surfaces of the main frame of the cabinet, and a cabinet door 2 is provided on the remaining side surface. The covering panels 16 are then fixed to the side connecting profiles 15 by screws or other means, and the covering panels 16 can also be reinforced and fixed to each other by screws.

[0077] The technical features of the above-described embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any appropriate changes and variations made to the above embodiments within the essential spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A communication cabinet comprising a communication cabinet door lock mechanism, a cabinet body (1) and a cabinet door (2), the cabinet body (1) is internally a cavity and laterally open, the cabinet door (2) is hinged at the lateral opening of the cabinet body (1), characterized in that, The door lock mechanism comprises a lock (3), a lock rod (4), a positioning assembly, a plug rod assembly and a lock hole (1a) on the cabinet body (1), the lock (3) is fixedly connected to the cabinet door (2), the upper end of the lock rod (4) is movably connected to the lock (3), the positioning assembly is hingedly connected to the cabinet door (2), the middle part of the lock rod (4) is connected to the positioning assembly, the plug rod assembly is connected to the cabinet door (2) and is adjacent to the lock hole (1a), the lock rod (4) moves downward when the lock (3) is in the locked state and can make the plug rod assembly embedded in the lock hole (1a), the lock rod (4) can be separated from the plug rod assembly when the lock (3) is in the unlocked state, and the plug rod assembly has a tendency to move upward and separate from the lock hole (1a); The positioning assembly comprises a bottom plate (5), a positioning cylinder (6), a ball (7) and a spring (8), the positioning cylinder (6) is sleeved on the middle part of the lock rod (4) and is fixedly connected to the bottom plate (5), the bottom plate (5) is hingedly connected to the inner side of the cabinet door (2), the inner side of the positioning cylinder (6) has a recessed positioning hole (6a), the spring (8) and the ball (7) are located in the positioning hole (6a), and the outer side of the lock rod (4) has an annular recessed positioning groove (4a), the ball (7) has a tendency to be embedded in the positioning groove (4a) under the elastic force of the spring (8); The positioning hole (6a), the ball (7) and the spring (8) form a positioning unit, the number of the positioning units is several, and the several positioning units are circumferentially distributed on the inner side of the positioning cylinder (6); The number of the positioning grooves (4a) is several, and the several positioning grooves (4a) are evenly arranged along the length direction of the lock rod (4); The positioning groove (4a) is matched with the outer side of the ball (7) and the two are in surface contact; The plug rod assembly comprises a guide plate one (9), a guide plate two (10), a plug rod (11) and a spring two (12), the guide plate one (9) and the guide plate two (10) are fixedly connected to the cabinet door (2) and the guide plate one (9) is located at the upper part of the guide plate two (10), the plug rod (11) is sequentially arranged in the guide plate one (9) and the guide plate two (10), and the spring two (12) is sleeved on the plug rod (11) and the plug rod (11) has a tendency to move upward under the elastic force of the spring two (12); The plug rod (11) has a protruding stop edge (11a) on the upper end, the two ends of the spring two (12) are respectively arranged on the stop edge (11a) and the guide plate two (10), and the stop edge (11a) has a tendency to abut against the guide plate one (9) under the elastic force of the spring two (12); The upper end of the plug rod (11) has a disc-shaped contact disc (11b), and the lower end of the lock rod (4) is spherical and abuts against the contact disc (11b); The lock rod (4), the positioning assembly, the plug rod assembly and the lock hole form a locking unit, the number of the locking units is two, and the two locking units are respectively and symmetrically arranged at the upper part and the lower part of the lock (3); The positioning cylinder and the bottom plate are both made of PVC material and are in an integral structure, and the bottom plate is in surface contact with the cabinet door; The lock is a rotary lock. And the cabinet body (1) comprises four vertical support profiles (13) and four horizontally arranged positioning profiles (14), two of the four horizontally arranged positioning profiles (14) are located at the bottom of the cabinet body (1), and the remaining two horizontally arranged positioning profiles (14) are located at the top of the cabinet body (1), wherein two of the vertical support profiles (13) and two of the horizontally arranged positioning profiles (14) arranged in an up-down manner form a first rectangular support through multi-directional positioning, and the remaining two vertical support profiles (13) and the remaining two horizontally arranged positioning profiles (14) form a second rectangular support through multi-directional positioning, and the first rectangular support and the second rectangular support are connected by a lateral connecting profile (15) to form a cabinet main frame, and the cabinet main frame is provided with a cladding panel (16) at the bottom, the top and three lateral faces, and the remaining one lateral face is provided with the cabinet door (2); The vertical support profile (13) comprises a first U-shaped main body (130), a first X positioning portion (131) connected to both sides of the first U-shaped main body (130) and extending inwardly of the first U-shaped main body (130), and a first Z positioning portion (132) perpendicularly connected to the first X positioning portion (131) and extending inwardly of the first U-shaped main body (130) on each first X positioning portion (131); the horizontally arranged positioning profile (14) comprises a second U-shaped main body (140), a first clamping portion (141) clamped into the first U-shaped main body (130) from both ends of the corresponding first U-shaped main body (130) and provided at both ends of the second U-shaped main body (140), an outer end of the first clamping portion (141) abutting against an inner bottom surface of the first U-shaped main body (130), and both outer side walls of the first clamping portion (141) abutting against the first Z positioning portion (132), and a second X positioning portion (142) provided at both sides of the second U-shaped main body (140) and abutting against the side surface of the corresponding first X positioning portion (131), the second X positioning portion (142) being a right-angled structure, and a second Y-direction positioning portion (143) distributed along a third direction Z and abutting against the end of the corresponding first X positioning portion (131) further provided on the second U-shaped main body (140), and the above is assembled to form the first rectangular support and the second rectangular support through multi-directional positioning; A profile groove tongue positioning hole (133) is provided on the vertical support profile (13), and a positioning tongue (150) is provided at both ends of the lateral connecting profile (15) and inserted into the profile groove tongue positioning hole (133), the positioning tongue (150) is inserted into the profile groove tongue positioning hole (133) in advance, so that the positions of the corresponding two vertical support profiles (13) distributed along the third direction Z can be limited.

Images