Lock catch mechanism and sealing door

Abstract

The utility model provides a lock catch mechanism and a sealing door. A buckling part is arranged on the sealing door. The lock catch mechanism comprises a fixing support, a lock catch cover and a lock catch plate. A fixing hole and a mounting hole are formed in the fixing support, the fixing support is fixedly connected to the sealing door through the fixing hole, and a first rotating shaft is arranged in the mounting hole in a penetrating mode; the lock catch cover is rotationally connected with the fixing support through a first rotating shaft, and a second rotating shaft is further arranged on the lock catch cover. The lock catch plate is rotationally connected with the lock catch cover through a second rotating shaft, a hanging buckle part used for being buckled with the buckling part is arranged on the lock catch plate, and the hanging buckle part is located at the end, away from the second rotating shaft, of the lock catch plate. The buckling part is buckled with the hanging buckling part to drive the end part of the lock catch plate to rotate in the direction close to the fixed bracket, the second rotating shaft rotates relative to the first rotating shaft, and after the lock catch plate rotates to a limit position, the lock catch mechanism is in a locked state. The lock catch mechanism is convenient to operate, and cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing connection, and particularly to a latch mechanism and a sealing door. Background Art

[0002] A latch is a sealing connection component used to tightly fasten two components together, especially widely used in the closing and sealing of doors. Most traditional latch mechanisms adopt a fastening design and use spring or torsion spring auxiliary devices to improve the operation convenience and sealing performance of the latch.

[0003] However, the existing latch structure has many parts and a complex structure, resulting in an increase in the cost of the latch, being prone to damage after long-term use, and having a poor fastening effect. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome at least one of the above-mentioned related technologies and provide a latch mechanism and a sealing door.

[0005] The additional aspects and advantages of the utility model will be partly described below, and partly will be obvious from the description, or can be learned through the practice of the utility model.

[0006] According to one aspect of the utility model, a latch mechanism for a sealing door is provided. A fastening part is arranged on the sealing door. The latch mechanism includes:

[0007] A fixed bracket, on which a fixing hole and a mounting hole are arranged. The fixed bracket is connected to the sealing door through the fixing hole, and a first rotating shaft is penetrated through the mounting hole.

[0008] A latch cover, which is rotatably connected to the fixed bracket through the first rotating shaft, and a second rotating shaft is further arranged on the latch cover.

[0009] A latch plate, which is rotatably connected to the latch cover through the second rotating shaft. A hanging buckle part for buckling with the fastening part is configured on the latch plate, and the hanging buckle part is located at one end of the latch plate far from the second rotating shaft.

[0010] The axes of the first rotating shaft and the second rotating shaft do not coincide. When the latch cover is driven to rotate around the first rotating shaft, the latch cover can drive the latch plate to rotate around the first rotating shaft.

[0011] Wherein, after the fastening part is separated from the hanging buckle part, the lock mechanism is in an open state. When the fastening part is buckled with the hanging buckle part, the end of the lock plate is driven to rotate towards the direction close to the fixed bracket, the second rotating shaft rotates relative to the first rotating shaft. After the lock plate rotates to the limit position, the lock mechanism is in a locked state.

[0012] In an exemplary embodiment of the present invention, when in the locked state, the center of the first rotating shaft, the center of the second rotating shaft, and the contact point between the fastening part and the hanging buckle part are not on the same straight line.

[0013] In an exemplary embodiment of the present invention, after the lock plate rotates to the limit position, the resilience of the sealing door drives the lock plate to have a tendency to rotate towards the direction close to the limit position.

[0014] In an exemplary embodiment of the present invention, the fixed bracket includes:

[0015] A fixing plate, on which the fixing hole is opened, for fixedly connecting the fixed bracket to the sealing door;

[0016] An adapter block, fixed on the fixing plate, and the mounting hole is opened on the adapter block.

[0017] In an exemplary embodiment of the present invention, a cavity is provided inside the lock cover, and the lock cover can buckle the adapter block in the cavity.

[0018] In an exemplary embodiment of the present invention, the fixing plate is connected to the sealing door by screws, and a receiving groove adapted to the screw head is provided on the fixing plate.

[0019] In an exemplary embodiment of the present invention, after the lock mechanism is locked, the outer edge contours of the lock plate and the lock cover are smoothly transitioned and coincide with the edge contour of the sealing door.

[0020] In an exemplary embodiment of the present invention, the lock plate is U-shaped, one end of the lock cover rotatably connected to the fixed part is located in the U-shaped opening of the lock plate, and the maximum widths of the lock plate and the lock cover are equal.

[0021] In an exemplary embodiment of the present invention, a handle groove is opened on the lock cover.

[0022] According to another aspect of the present invention, there is further provided a sealing door, including the above-mentioned lock mechanism, and a sealing strip is provided at the sealing part of the sealing door.

[0023] The latch mechanism and the sealing door of the present utility model have the following beneficial effects:

[0024] In the latch mechanism of the present utility model, the latch cover is rotatably connected to the fixed bracket, and the latch plate is rotatably connected to the latch cover. The two rotating shafts do not coincide. When the latch cover rotates, it can drive the latch plate and the second rotating shaft to rotate around the first rotating shaft. After the buckling part and the hanging part are buckled, press the latch cover to make the latch cover rotate around the first rotating shaft, which can drive the latch plate to rotate around the buckling point of the buckling part and the hanging part. During the rotation process, the second rotating shaft rotates around the first rotating shaft, so that the latch plate can continuously press down the door panel of the sealing door. During this process, when the buckling point of the buckling part and the hanging part, the center point of the first rotating shaft, and the center point of the second rotating shaft rotate to the same straight line, the downward pressure of the latch plate on the sealing door reaches the maximum. After the latch cover rotates to the limit position, the restoring force of the sealing door makes the latch cover not rebound, so that the latch mechanism is in the locked state and the sealing door is buckled.

[0025] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings herein are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present utility model, and are used together with the specification to explain the principles of the present utility model. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 is a schematic structural diagram of the latch mechanism according to an embodiment of the present utility model.

[0028] Figure 2 is an exploded structural view of the latch mechanism according to an embodiment of the present utility model.

[0029] Figure 3 is an exploded structural view of the latch mechanism according to an embodiment of the present utility model.

[0030] Figure 4 is a side cross-sectional view of the latch mechanism according to an embodiment of the present utility model.

[0031] Figure 5 is a partial structural schematic diagram of the sealing door with the latch mechanism installed according to an embodiment of the present utility model.

[0032] The main structural markings in the drawings are explained as follows:

[0033] 1. Fixed bracket; 11. Fixed plate; 111. Fixing hole; 12. Adapter block; 121. Mounting hole; 2. Lock cover; 21. Handle groove; 3. Lock plate; 31. Hanging buckle part; 4. First rotating shaft; 5. Second rotating shaft; 6. Sealing door; 61. Buckling part; 62. Mounting groove. Detailed implementation mode

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this utility model will be complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed descriptions will be omitted. In addition, the drawings are only schematic illustrations of the present utility model and are not necessarily drawn to scale.

[0035] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the icon to another component, these terms are used in this specification only for convenience, for example, according to the direction of the example in the drawings. It can be understood that if the device of the icon is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" another structure, it may mean that a structure is integrally formed on another structure, or that a structure is "directly" disposed on another structure, or that a structure is "indirectly" disposed on another structure through another structure.

[0036] The terms "a", "an", "the", and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first" and "second" are used only as labels and are not a limitation on the quantity of their objects.

[0037] The present utility model provides a locking mechanism. As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown in the figure, the buckle mechanism is used to seal the door 6. A fastening portion 61 is provided on the sealing door 6. The buckle mechanism includes a fixed bracket 1, a buckle cover 2 and a buckle plate 3. A fixing hole 111 and a mounting hole 121 are provided on the fixed bracket 1. The fixed bracket 1 is fixedly connected to the sealing door 6 through the fixing hole 111. A first rotating shaft 4 is passed through the mounting hole 121; the buckle cover 2 is rotatably connected to the fixed bracket 1 through the first rotating shaft 4, and a second rotating shaft 5 is further provided on the buckle cover 2; the buckle plate 3 is rotatably connected to the buckle cover 2 through the second rotating shaft 5. A hanging buckle portion 31 for buckling with the fastening portion 61 is arranged on the buckle plate 3. The hanging buckle portion 31 is located at one end of the buckle plate 3 away from the second rotating shaft 5. The axes of the first rotating shaft 4 and the second rotating shaft 5 do not coincide. When the buckle cover 2 is driven to rotate around the first rotating shaft 4, the buckle cover 2 can drive the buckle plate 3 to rotate around the first rotating shaft 4. Among them, after the fastening portion 61 and the hanging buckle portion 31 are separated, the buckle mechanism is in an open state; when the fastening portion 61 and the hanging buckle portion 31 are buckled, the end of the buckle plate 3 is driven to rotate in the direction close to the fixed bracket 1, and the second rotating shaft 5 rotates relative to the first rotating shaft 4. After the buckle plate 3 rotates to the limit position, the buckle mechanism is in a locked state.

[0038] In the buckle mechanism of the present utility model, the buckle cover 2 is rotatably connected to the fixed bracket 1, and the buckle plate 3 is rotatably connected to the buckle cover 2. The two rotating shafts do not coincide. When the buckle cover 2 rotates, it can drive the buckle plate 3 and the second rotating shaft 5 to rotate around the first rotating shaft 4. After buckling the fastening portion 61 and the hanging buckle portion 31, press the buckle cover 2 to make the buckle cover 2 rotate around the first rotating shaft 4, which can drive the buckle plate 3 to rotate around the buckling point of the fastening portion 61 and the hanging buckle portion 31. During the rotation process, the second rotating shaft 5 rotates around the first rotating shaft 4, so that the buckle plate 3 can continuously press down the door panel of the sealing door 6. During this process, when the buckling point of the fastening portion 61 and the hanging buckle portion 31, the center point of the first rotating shaft 4, and the center point of the second rotating shaft 5 rotate to the same straight line, the downward pressure of the buckle plate 3 on the sealing door 6 reaches the maximum. When the buckle cover 2 rotates to the limit position, the restoring elastic force of the sealing door 6 makes the buckle cover 2 not rebound, so that the buckle mechanism is in a locked state and the sealing door 6 is buckled. The buckle mechanism has few components, is easy to operate, is beneficial to reducing costs, and while realizing the buckling of the sealing door 6, the service life of the buckle mechanism can be extended.

[0039] Next, each part of the buckle mechanism provided by the embodiment of the present utility model will be described in detail with reference to the accompanying drawings:

[0040] The buckle mechanism is used for the sealing door 6. A fastening portion 61 is provided on the sealing door 6. Through the cooperation of the buckle mechanism and the fastening portion 61, the sealing door 6 can be buckled.

[0041] In the embodiment of the present utility model, the buckle mechanism includes a fixed bracket 1, a buckle cover 2 and a buckle plate 3. The fixed bracket 1 is provided with a fixing hole 111 and a mounting hole 121. The fixed bracket 1 is fixedly connected to the sealing door 6 through the fixing hole 111. The fixed bracket 1 serves as a support and fixing component for the buckle cover 2 and the buckle plate 3, facilitating the connection of the entire buckle mechanism to the sealing door 6. The fixed connection mode between the fixed bracket 1 and the sealing door 6 can be bolt connection, snap connection, etc.

[0042] Furthermore, a first rotating shaft 4 is inserted through the mounting hole 121. The buckle cover 2 is rotatably connected to the fixed bracket 1 through the first rotating shaft 4. The buckle cover 2 is further provided with a second rotating shaft 5. The buckle plate 3 is rotatably connected to the buckle cover 2 through the second rotating shaft 5. The buckle plate 3 is configured with a hanging buckle portion 31 for buckling with a buckling portion 61. The hanging buckle portion 31 is located at one end of the buckle plate 3 away from the second rotating shaft 5. When the buckle cover 2 rotates around the first rotating shaft 4, it can drive the buckle plate 3 and the second rotating shaft 5 to rotate around the first rotating shaft 4 together. Therefore, after the buckling portion 61 on the buckle plate 3 is buckled with the hanging buckle portion 31 on the sealing door 6, the buckling portion 61 fixes the position of one end of the buckle plate 3. Thus, when the buckle cover 2 rotates, it can drive the buckle plate 3 to press the sealing door 6 tightly, realizing the buckling of the sealing door 6.

[0043] It should be noted that the axes of the first rotating shaft 4 and the second rotating shaft 5 do not coincide. When the buckle cover 2 is driven to rotate around the first rotating shaft 4, the buckle cover 2 can drive the buckle plate 3 to rotate around the first rotating shaft 4. After the buckling portion 61 and the hanging buckle portion 31 are separated, the buckle mechanism is in an open state; when the buckling portion 61 and the hanging buckle portion 31 are buckled, the end of the buckle plate 3 is driven to rotate towards the direction close to the fixed bracket 1, and the second rotating shaft 5 rotates relative to the first rotating shaft 4. After the buckle plate 3 rotates to the limit position, the buckle mechanism is in a locked state; and in the locked state, the centers of the first rotating shaft 4, the second rotating shaft 5, and the contact point between the buckling portion 61 and the hanging buckle portion 31 are not on the same straight line.

[0044] Specifically, when the sealing door 6 is to be latched, the latching mechanism needs to be in the locked state. The latching of the latching mechanism can be divided into three states. Initial state: First, rotate the latch cover 2 to drive the latch plate 3 to rotate, so that the hanging hook portion 31 is latched with the latching portion 61. Tightening state: Apply a downward pressure to the latch cover 2 to drive the latch cover 2 to rotate around the first rotating shaft 4, and this rotation can cause the end of the latch cover 2 away from the first rotating shaft 4 to move towards the direction close to the fixed bracket 1. When the latch cover 2 rotates, it can pull the latch plate 3, so that the latch plate 3 gradually presses the sealing door 6. The distance between the latching point of the hanging hook portion 31 and the latching portion 61 and the first rotating shaft 4 gradually decreases, and the distance between the second rotating shaft 5 and the first rotating shaft 4 gradually increases. When the latching point of the hanging hook portion 31 and the latching portion 61, the center of the first rotating shaft 4, and the center of the second rotating shaft 5 are on the same straight line, the downward pressure of the latch plate 3 on the sealing door 6 reaches the maximum. Locked state: Continue to apply a downward pressure to the latch cover 2, and the latch plate 3 no longer presses the sealing door 6. During this process, the restoring force of the sealing door 6 will drive the latch cover 2 not to rebound. When the latch plate 3 rotates to the limit position, the latching mechanism enters the locked state.

[0045] It can be understood that during the process from the initial state to the tightening state, applying a downward pressure to the latch cover 2 drives the latch cover 2 to rotate, and at the same time drives the latch plate 3 to press the sealing door 6. The sealing gap of the sealing door 6, the rubber strip on the sealing door 6, and the elastic deformation of the sealing door 6 can all provide displacement space for the latch plate 3 to press the sealing door 6. The restoring force of the sealing door 6 is opposite to the downward pressure applied to the latch cover 2. Therefore, it is necessary to increase the downward pressure applied to the latch cover 2 to press down the latch cover 2.

[0046] When in the tightening state, the downward pressure of the latch plate 3 on the sealing door 6 is at the maximum.

[0047] During the process from the tightening state to the locked state, the latch plate 3 no longer applies a downward pressure to the sealing door 6, and the restoring force of the sealing door 6 is in the same direction as the downward pressure applied to the latch cover 2, so as to drive the latch cover 2 to always have a tendency to rotate towards the limit position. This enables the latching mechanism to maintain the locked state.

[0048] In one embodiment of the utility model, the fixing bracket 1 includes a fixing plate 11 and an adapter block 12. Among them, a fixing hole 111 is provided on the fixing plate 11, and is used to fix the fixing bracket 1 to the sealing door 6; the adapter block 12 is fixed on the fixing plate 11, and the mounting hole 121 is provided on the adapter block 12. Specifically, the fixing plate 11 may be a strip-shaped plate-like structure, and two fixing holes 111 may be symmetrically arranged, and the two fixing holes 111 are located at both ends of the fixing plate 11. The fixing of the fixing plate 11 to the sealing door 6 is achieved by screwing bolts or inserting buckles in the fixing holes 111. The two symmetrical fixing holes 111 can make the fixing bracket 1 more firmly fixed to the sealing door 6. The utility model does not specifically limit the number of positions of the fixing holes 111 on the fixing plate 11 and the fixing method of the fixing plate 11.

[0049] Furthermore, the fixing plate 11 is connected to the sealing door 6 by screws, the screws are inserted into the fixing holes 111 and fixed to the sealing door 6, and a receiving groove adapted to the screw head can be provided on the fixing plate 11. After the screw is inserted into the sealing door 6, the screw head is embedded in the receiving groove, and the screw head does not protrude from the fixing plate 11, which can effectively prevent the screw from interfering with the rotation of the lock cover 2.

[0050] In an exemplary embodiment of the utility model, a cavity is provided inside the lock cover 2, and the lock cover 2 can buckle the adapter block 12 inside the cavity. Specifically, the lock cover 2 buckles the adapter block 12 inside, so that the lock cover 2 and the adapter block 12 can be rotatably connected, and the adapter block 12 can be prevented from being exposed to the outside, which is conducive to improving the aesthetics of the lock mechanism.

[0051] Furthermore, after the lock mechanism is locked, the outer edge contours of the lock plate 3 and the lock cover 2 are smoothly transitioned and coincide with the edge contour of the sealing door 6. For example, the edge contour of the sealing door 6 is arc-shaped. When the lock mechanism is in a locked state, the lock cover 2 rotates to the extreme position. At this time, the outer edge contour of the lock plate 3 and the lock cover 2 is the same as the contour shape of the sealing door 6. The sealing door 6 is provided with a mounting groove 62 for accommodating the lock hole mechanism, so that the outer edge contour of the lock plate 3 and the lock cover 2 can coincide with the contour of the sealing door 6, and the lock mechanism will not protrude from the outer edge of the sealing door 6, which can further improve the aesthetics of the lock mechanism and the sealing door 6.

[0052] Furthermore, a hand-grip groove 21 is provided on the lock cover 2. The hand-grip groove 21 is located on the side of the lock cover 2 away from the first rotating shaft 4. Since the lock mechanism is installed in the installation groove 62, when the lock mechanism is in a locked state, the outer edge contours of the lock plate 3 and the lock cover 2 coincide with the outer edge contour of the sealing door 6. When the lock mechanism needs to be opened, the lock cover 2 is buckled through the hand-grip groove 21, and a pulling force is applied to the lock cover 2, which is easy to operate.

[0053] In an embodiment of the present disclosure, the lock plate 3 is U-shaped, and one end of the lock cover 2 rotatably connected to the fixture is located in the U-shaped opening of the lock plate 3, and the maximum widths of the lock plate 3 and the lock cover 2 are equal. Specifically, a U-shaped groove is formed on one side of the lock plate 3 rotatably connected to the second rotating shaft 5, and notches are formed at both ends of one side of the lock cover 2 rotatably connected to the first rotating shaft 4. The side of the lock cover 2 rotatably connected can be inserted into the U-shaped groove of the lock mechanism. Both ends of the second rotating shaft 5 can be rotatably connected to the lock plate 3, which is beneficial to improving the connection stability between the lock cover 2 and the lock plate 3.

[0054] The present utility model further provides a sealed door 6, including the above-mentioned lock mechanism. A sealing strip is provided at the sealing portion of the sealed door 6. During the process from the initial state to the tensioned state, when the lock cover 2 is pressed down to drive the lock plate 3 to press the sealed door 6, the sealing strip can provide a displacement space for the lock plate 3 to press the sealed door 6, which can not only improve the sealing effect of the sealed door 6, but also reduce the downward pressure required when locking the lock mechanism, facilitating operation.

[0055] Those skilled in the art will readily conceive of other embodiments of the present utility model after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present utility model, which follow the general principles of the present utility model and include common general knowledge or conventional technical means in the technical field not disclosed by the present utility model. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present utility model are pointed out by the appended claims.

Claims

1. A locking mechanism for a sealing door, wherein a locking portion is provided on the sealing door, and the locking mechanism comprises: A fixing bracket, wherein a fixing hole and a mounting hole are provided on the fixing bracket, the fixing bracket is connected to the sealing door through the fixing hole, and a first rotating shaft is passed through the mounting hole; A locking cover, wherein the locking cover is rotatably connected to the fixing bracket via the first rotating shaft, and a second rotating shaft is also provided on the locking cover; A lock plate, wherein the lock plate is rotatably connected to the lock cover via the second rotating shaft, and the lock plate is provided with a hook portion for buckling with the buckling portion, and the hook portion is located at an end of the lock plate away from the second rotating shaft; The axes of the first rotating shaft and the second rotating shaft do not coincide with each other, and when the locking cover is driven to rotate around the first rotating shaft, the locking cover can drive the locking plate to rotate around the first rotating shaft; Among them, after the buckling part is separated from the hook part, the locking mechanism is in an open state, the buckling part is buckled with the hook part, driving the end of the locking plate to rotate in a direction close to the fixed bracket, and the second rotating shaft rotates relative to the first rotating shaft. After the locking plate rotates to the extreme position, the locking mechanism is in a locked state.

2. The locking mechanism according to claim 1, characterized in that: When in a locked state, the center of the first rotating shaft, the center of the second rotating shaft, the contact point of the buckling portion and the hook portion are not on the same straight line.

3. The locking mechanism according to claim 1, characterized in that: After the lock strike plate rotates to the extreme position, the rebound force of the sealing door drives the lock strike plate to rotate in a direction close to the extreme position.

4. The locking mechanism according to claim 1, characterized in that: The fixing bracket comprises: A fixing plate, wherein the fixing hole is provided on the fixing plate and is used for fixing the fixing bracket to the sealing door; The adapter block is fixed on the fixing plate, and the mounting hole is formed on the adapter block.

5. The locking mechanism according to claim 4, characterized in that: A cavity is provided inside the locking cover, and the locking cover can buckle the adapter block into the cavity.

6. The locking mechanism according to claim 4, characterized in that: The fixing plate is connected to the sealing door via screws, and a receiving groove adapted to the screw head is provided on the fixing plate.

7. The locking mechanism according to claim 1, characterized in that: After the locking mechanism is locked, the contours of the outer edges of the locking plate and the locking cover transition smoothly and coincide with the edge contour of the sealing door.

8. The locking mechanism according to claim 1, characterized in that: The locking plate is U-shaped, one end of the locking cover rotatably connected to the fixed part is located in the U-shaped opening of the locking plate, and the maximum width of the locking plate is equal to that of the locking cover.

9. The locking mechanism according to claim 1, characterized in that: A hand buckle groove is provided on the lock buckle cover.

10. A sealed door, characterized in that: It comprises the locking mechanism according to any one of claims 1 to 9, wherein a sealing strip is arranged at the sealing opening of the sealing door.

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