CN210289525U - Vacuum push-pull type sliding door structure - Google Patents
Vacuum push-pull type sliding door structure Download PDFInfo
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- CN210289525U CN210289525U CN201920879846.5U CN201920879846U CN210289525U CN 210289525 U CN210289525 U CN 210289525U CN 201920879846 U CN201920879846 U CN 201920879846U CN 210289525 U CN210289525 U CN 210289525U
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- door body
- sliding door
- cavity
- pressing block
- guide rail
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Abstract
The utility model relates to the field of large-scale vacuum equipment, and discloses a vacuum push-pull type sliding door structure, which comprises a sliding door body, a guide rail, a hanging mechanism and a door body pressing mechanism; the sliding door body is hung on the guide rail through a hanging mechanism; the hanging mechanism comprises a hanging body, an upper fixed seat, a movable hanging plate and a lower fixed seat which are connected in sequence, and two ends of the movable hanging plate are respectively and rotatably connected with the upper fixed seat and the lower fixed seat; the guide rail is transversely positioned above the cavity; the door body pressing mechanism is matched with the sliding door body to be fixed on the cavity, the sliding door body is gradually close to the door body pressing mechanism in the closing process, and after the sliding door body is contacted with the door body pressing mechanism, the sliding door body is gradually horizontally moved to be close to the cavity under the limitation of the door body pressing mechanism until the sliding door body completely closes the opening of the cavity. In this way, the utility model discloses the space volume that can effectual reduction cavity door switch action needs to occupy, still greatly reduced the installation degree of difficulty of cavity door simultaneously to its overall structure is simple.
Description
Technical Field
The utility model relates to a large-scale vacuum equipment field especially relates to a push-pull sliding door structure in vacuum on the large-scale vacuum equipment.
Background
In a vertical vacuum apparatus, the chamber door of the apparatus needs to be opened and closed frequently. There are three main ways of connecting the existing chamber door to the apparatus body (apparatus chamber).
1. Connection mode of hinge structure
One side of the cavity door is hinged on the equipment body through a hinge structure, and the cavity door can close or open the equipment by rotating around a hinge shaft; this configuration is most common. Because the switch of the cavity door and the equipment body present a certain opening and closing angle, the phenomena that the side of the cavity door close to the hinge is contacted with the equipment body and the side of the cavity door far away from the hinge is not contacted with the equipment body often occur, so that the device needs to be debugged for many times during installation and has high installation difficulty; the cavity door with the structure mode is easy to droop in the using process; in particular, a large volume of space is required for the rotary movement of the chamber door during opening and closing.
2. Connecting mode of parallelogram link rod structure
The structure is based on the principle that opposite sides of a parallelogram are parallel, one side of a quadrilateral link rod structure is fixedly connected with an equipment body, and the other opposite side of the quadrilateral link rod structure is fixedly connected with a cavity door; in the opening and closing process, the cavity door and the equipment body are always kept in a parallel state. However, the connection mode has higher requirements on the structural strength of the link rod, is difficult to install, and also needs to occupy larger space volume in front of the equipment body so as to open the cavity door.
3. Connection mode of linear actuator combined structure
The structure is characterized in that a linear actuator (such as an air cylinder, a hydraulic cylinder or an electric cylinder) is used for controlling the cavity door to be linearly separated or rotationally separated from the equipment body. The linear actuator combination structure is more complex than the two structures, and can be opened and closed only by a control module; and the opening and closing of the cavity door also needs to occupy a large space range.
Therefore, a sliding door structure capable of reducing the volume of the cavity door occupied by the opening and closing operation needs to be designed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a vacuum plug-type structure that moves, can the effectual required space volume that occupies of reduction cavity door-trip action, still greatly reduced the installation degree of difficulty of cavity door simultaneously to its overall structure is simple.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a vacuum push-pull sliding door structure, install on large-scale vacuum apparatus's cavity, it includes: the sliding door comprises a sliding door body, a guide rail, a hanging mechanism and a door body pressing mechanism; the sliding door body corresponds to the opening of the cavity, and is hung on the guide rail through at least two hanging mechanisms; the hanging mechanism comprises a hanging body, an upper fixing seat, a movable hanging plate and a lower fixing seat which are sequentially connected, the hanging body is movably arranged on the guide rail, the lower fixing seat is fixedly connected with the upper end of the sliding door body, the upper end of the movable hanging plate is rotatably connected with the upper fixing seat through an upper movable shaft, the lower end of the movable hanging plate is rotatably connected with the lower fixing seat through a lower movable shaft, and the upper movable shaft and the lower movable shaft are both parallel to the sliding door body; the guide rail is horizontally and transversely arranged and positioned above the cavity, one end of the guide rail is fixed on the cavity through a support, the other end of the guide rail is suspended in the air and is longer than the cavity, and the sliding door body can move along the guide rail to open or close the cavity; the door body hold-down mechanism cooperates the sliding door body to fix on the cavity, and when the sliding door body closes the cavity, the sliding door body is gradually close to the door body hold-down mechanism, and after the sliding door body is contacted with the door body hold-down mechanism, the sliding door body is gradually horizontally moved to the cavity under the limit of the door body hold-down mechanism until the sliding door body completely closes the opening of the cavity.
Preferably, when the sliding door body is in a closed cavity state, one side of the sliding door body close to the moving opening direction is a moving side, and the other side of the sliding door body is a fixed side; the door body pressing mechanism comprises an upper pressing mechanism used for limiting the upper end of the sliding door body, a lower pressing mechanism used for limiting the lower end of the sliding door body and a side pressing mechanism used for limiting the fixed side of the sliding door body.
Preferably, an upper roller base is vertically fixed in the middle of the upper end of the sliding door body, and an upper roller is rotatably arranged on the upper roller base; the upper pressing mechanism is an upper pressing block fixed in the middle of the upper end of the cavity; the upper pressing block is C-shaped, and an opening of the upper pressing block is opposite to the upper roller; in the process of moving the sliding door body to close the cavity, the upper roller can be inserted into the upper pressing block from the opening of the upper pressing block in a rolling manner and is in clamping and press fit with the upper pressing block.
Preferably, a lower roller base is vertically fixed in the middle of the lower end of the sliding door body, and a lower roller is rotatably arranged on the lower roller base; the lower pressing mechanism is a lower pressing block fixed in the middle of the lower end of the cavity; the lower pressing block is C-shaped, and an opening of the lower pressing block is opposite to the lower roller; when the movable door body is moved to close the cavity, the lower roller can be inserted into the lower pressing block from the opening of the lower pressing block in a rolling manner and is in clamping and press fit with the lower pressing block.
Preferably, a wedge-shaped block is fixed in the middle of the fixed side of the sliding door body; the side pressing mechanism comprises a side pressing block which is fixed on the cavity and corresponds to the wedge-shaped block, and a side roller which is rotatably arranged on the side pressing block; the side compression block is in a C shape, and an opening of the side compression block is opposite to the wedge-shaped block; in the process of moving the sliding door body to close the cavity, the wedge-shaped block can be inserted into the side pressing block from the opening of the side pressing block and is in press fit with the side roller clamp on the side pressing block, and the side roller is in rolling contact with the wedge-shaped block.
Preferably, a handle is fixedly arranged on the moving side of the sliding door body.
Preferably, the guide rail is fixed on the support, and the lower end of the guide rail is provided with a clamping groove for clamping the hanging mechanism.
Preferably, the upper end of the hanger body is symmetrically provided with two movable rollers, and the two movable rollers are arranged on the guide rail in a rolling and clamping manner; the lower end of the hanger body is fixedly connected with the upper fixing seat through a hanger connecting shaft.
The utility model has the advantages that: the utility model can effectively reduce the space volume occupied by the opening and closing action of the cavity door, and improve the utilization rate of the workshop space; meanwhile, the mounting difficulty of the cavity door is greatly reduced, the mounting efficiency is improved, the whole structure is simple, and the production and manufacturing cost is low; the free sealing and separation of the sliding door body (cavity door) and the cavity are realized through the structural design of the hanging mechanism and the door body pressing mechanism; the device is particularly suitable for occasions where the cavity door needs to be opened and closed frequently or the equipment placing space is narrow.
Drawings
Fig. 1 is a schematic structural view of a vacuum sliding door structure in an open state according to the present invention;
fig. 2 is a schematic side view of the vacuum sliding door structure according to the present invention in an open state;
fig. 3 is a schematic structural view of a vacuum sliding door structure in a closed state according to the present invention;
fig. 4 is a schematic side view of the vacuum sliding door structure in a closed state according to the present invention;
FIG. 5 is an enlarged partial schematic view of FIG. 4 at A;
FIG. 6 is a schematic top view of the upper clamping mechanism of FIG. 4;
fig. 7 is a schematic top view of the side press mechanism of fig. 4.
The parts in the drawings are numbered as follows: 1. a cavity; 2. a sliding door body; 21. a moving side; 22. a fixed side; 3. a guide rail; 4. a support; 5. a hanging mechanism; 51. hanging the concrete; 511. moving the roller; 512. a hanger connecting shaft; 52. an upper fixed seat; 53. a movable hanging plate; 54. a lower fixed seat; 6. an upper pressing mechanism; 61. an upper compaction block; 62. an upper roller base; 63. an upper roller; 7. a lower pressing mechanism; 8. a side compression mechanism; 81. a side compression block; 82. a side roller; 83. a wedge block; 9. a handle.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to fig. 1 to 7, an embodiment of the present invention includes:
a vacuum push-pull sliding door structure is installed on a cavity 1 of large-scale vacuum equipment in a matching mode. The vacuum push-pull sliding door structure comprises: the sliding door comprises a sliding door body 2 (equivalent to a cavity door), a guide rail 3, a hanging mechanism 5 and a door body pressing mechanism. The guide rail 3 is horizontally and transversely arranged and is positioned above the cavity 1, one end of the guide rail 3 is fixed on the cavity 1 through a support 4, and the other end of the guide rail 3 is suspended and is longer than the cavity 1; the sliding door body 2 corresponds to the opening of the cavity 1, and the sliding door body 2 is hung on the guide rail 3 through two hanging mechanisms 5; the sliding door body 2 is pushed and pulled, the sliding door body 2 can move back and forth along the guide rail 3 to open and close the opening of the cavity 1, the sliding door body 2 is pushed to close the opening of the cavity 1, the sliding door body 2 is pulled to open the opening of the cavity 1, and the pushing and the pulling are two opposite actions. The upper end of the hanging mechanism 5 is slidably connected with the guide rail 3, and the lower end of the hanging mechanism 5 is fixedly connected with the upper end of the sliding door body 2; the hanging mechanism 5 comprises a hanging body 51, an upper fixed seat 52, a movable hanging plate 53 and a lower fixed seat 54 which are connected in sequence, the hanging body 51 is movably arranged on the guide rail 3, the lower fixed seat 54 is welded with the upper end of the sliding door body 2, the upper end of the movable hanging plate 53 is rotatably connected with the upper fixed seat 52 through an upper movable shaft, the lower end of the movable hanging plate 53 is rotatably connected with the lower fixed seat 54 through a lower movable shaft, and the upper movable shaft and the lower movable shaft are both parallel to the sliding door body 2; the movable hanging plate 53 and the upper and lower fixing seats 52 and 54 are designed to facilitate the sliding door body 2 to approach or leave the opening of the cavity 1, so that the cavity 1 can be opened and closed completely. The bracket 4 is welded on the cavity 1; the guide rail 3 is fixed on the bracket 4, a clamping groove for clamping the hanging mechanism 5 is formed in the lower end of the guide rail 3, and the cross section of the guide rail 3 is in an inverted concave shape; the upper end of the hanger body 51 is symmetrically provided with two movable rollers 511, the two movable rollers 511 are arranged on the guide rail 3 in a rolling and clamping manner, and the lower end of the hanger body 51 is fixedly connected with the upper fixed seat 52 through a hanger connecting shaft 512. The door body pressing mechanism is matched with the sliding door body 2 and fixed on the cavity 1; in the process of pushing the sliding door body 2 to close the cavity 1 (namely in the process of closing the sliding door body 2), the sliding door body 2 gradually approaches to the door body pressing mechanism, and after the sliding door body 2 is contacted with the door body pressing mechanism, the sliding door body 2 is gradually limited by the door body pressing mechanism to be gradually horizontally moved towards the cavity 1 until the sliding door body 2 completely closes the opening of the cavity 1; in the process of opening the cavity 1 by pulling the sliding door body 2 (namely in the process of opening the sliding door body 2), the sliding door body 2 is gradually far away from the door body pressing mechanism, after the sliding door body 2 is not contacted with the door body pressing mechanism, the sliding door body 2 keeps a certain distance from the cavity 1 under the action of gravity, and continuously moves along the guide rail 3 in the distance state until the opening of the cavity 1 is completely opened by the sliding door body 2. When the sliding door body 2 is in a state of closing the cavity 1 (i.e. when the sliding door body 2 closes the opening of the cavity 1), one side of the sliding door body 2 close to the opening direction of the moving door body is a moving side 21, and the other side of the moving door body is a fixed side 22. A handle 9 is fixedly arranged on the moving side 21 of the sliding door body 2 so as to be convenient for opening or closing the sliding door body 2 in a pushing and pulling manner.
The door body pressing mechanism comprises an upper pressing mechanism 6 for limiting the upper end of the sliding door body 2, a lower pressing mechanism 7 for limiting the lower end of the sliding door body 2, and a side pressing mechanism 8 for limiting the fixed side 22 of the sliding door body 2. The upper pressing mechanism 6, the lower pressing mechanism 7 and the side pressing mechanism 8 can well limit the opening of the sliding door body 2 to be completely sealed with the cavity 1 under the combined action of three directions, and the stability is good. An upper roller base 62 is vertically fixed in the middle of the upper end of the sliding door body 2, and an upper roller 63 is rotatably arranged on the upper roller base 62; the upper pressing mechanism 6 is an upper pressing block 61 fixed in the middle of the upper end of the cavity 1; the upper pressing block 61 is in a C shape, and an opening of the upper pressing block 61 is opposite to the upper roller 63; in the process of moving the sliding door body 2 to close the cavity 1, the upper roller 63 can be inserted into the upper pressing block 61 from the opening of the upper pressing block 61 in a rolling manner and is in clamping press fit with the upper pressing block 61. The upper compression block 61 comprises a first fixing part fixedly connected with the cavity 1, a first limiting part opposite to the first fixing part, and a first connecting part connecting the first fixing part and the first limiting part; the inner side wall of the first limiting portion is inclined to the sliding door body 2, and in the closing process of the sliding door body 2, the upper end portion of the sliding door body 2 can be limited to be gradually close to the cavity 1 until being in sealing fit with the cavity 1 by the contact of the upper roller 63 and the inner side wall of the first limiting portion. A lower roller base is vertically fixed in the middle of the lower end of the sliding door body 2, and a lower roller is rotatably arranged on the lower roller base; the lower pressing mechanism 7 is a lower pressing block fixed in the middle of the lower end of the cavity 1; the lower pressing block is C-shaped, and an opening of the lower pressing block is opposite to the lower roller; when the movable door body 2 is moved to close the cavity 1, the lower roller can be inserted into the lower pressing block from the opening of the lower pressing block in a rolling manner and is in clamping and press fit with the lower pressing block. The lower pressing block comprises a second fixing part fixedly connected with the cavity 1, a second limiting part opposite to the second fixing part, and a second connecting part connecting the second fixing part and the second limiting part; the inner side wall of the second limiting portion is inclined to the sliding door body 2, and in the closing process of the sliding door body 2, the contact of the lower roller and the inner side wall of the second limiting portion can limit the lower end portion of the sliding door body 2 to gradually approach the cavity 1 until the lower end portion is in sealing fit with the cavity 1. The lower pressing block has the same structure as the lower pressing block, and the lower roller base and the lower roller are respectively corresponding to the upper roller base 62 and the upper roller 63 and have the same structure. A wedge block 83 is fixed in the middle of the fixed side 22 of the sliding door body 2; the side pressing mechanism 8 comprises a side pressing block 81 which is fixed on the cavity 1 and corresponds to the wedge-shaped block 83, and a side roller 82 which is rotatably arranged on the side pressing block 81; the side pressing block 81 is C-shaped, and an opening of the side pressing block 81 is opposite to the wedge block 83; in the process of moving the sliding door body 2 to close the cavity 1, the wedge block 83 can be inserted into the side pressing block 81 from the opening of the side pressing block 81 and is clamped and pressed with the side roller 82 on the side pressing block 81, and the side roller 82 is in rolling contact with the wedge block 83; the side roller 82 can improve the smoothness of the wedge block 83 inserted into the side pressing block 81 and reduce the friction coefficient. The side compression block 81 comprises a third fixing part fixedly connected with the cavity 1, a third limiting part opposite to the third fixing part, and a third connecting part connecting the third fixing part and the third limiting part; one surface of the wedge block 83 corresponding to the third limiting part is an inclined surface, and the distance from the inclined surface to the sliding door body 2 is gradually reduced from one side far away from the third connecting part to one side close to the third connecting part; the inner side wall of the third limiting part is parallel to the inclined surface and is opposite to the inclined surface; the side roller 82 is installed on the third limiting part, and the outer edge of the side roller 82 protrudes out of the inner side wall of the third limiting part; during the closing process of the sliding door body 2, the matching of the side roller 82 and the inclined surface of the wedge block 83 can limit the fixed side 22 of the sliding door body 2 to gradually approach the cavity 1 until the fixed side is in sealing fit with the cavity 1.
When the handle 9 is pulled to enable the sliding door body 2 to be far away from the cavity 1, the sliding door body 2 is separated from the limitation of the upper pressing mechanism 6, the lower pressing mechanism 7 and the side pressing mechanism 8 (the upper roller 63 is far away from the first limiting part and is not contacted with the first limiting part, the lower roller is far away from the second limiting part and is not contacted with the second limiting part, and the wedge block 83 is far away from the side roller 82 and is not contacted with the side roller 82), and a certain distance gap is kept between the wedge block and the cavity 1 under the action of self weight so as to be convenient to move; when the handle 9 is pushed to enable the sliding door body 2 to be close to the cavity 1, the sliding door body 2 is limited by the upper pressing mechanism 6, the lower pressing mechanism 7 and the side pressing mechanism 8 (the upper roller 63 is close to the first limiting part and is pressed by the inner side wall of the first limiting part, the lower roller is close to the second limiting part and is pressed by the inner side wall of the second limiting part, and the wedge block 83 is close to the side roller 82 and is pressed by the side roller 82), so that the sliding door body 2 can be in contact with the cavity 1 and can be pressed to seal the opening of the cavity 1.
The utility model can effectively reduce the space volume occupied by the opening and closing action of the cavity door, and improve the utilization rate of the workshop space; meanwhile, the mounting difficulty of the cavity door is greatly reduced, the mounting efficiency is improved, the whole structure is simple, and the production and manufacturing cost is low; the free sealing and separation of the sliding door body 2 (cavity door) and the cavity 1 are realized through the structural design of the hanging mechanism 5 and the door body pressing mechanism; the device is particularly suitable for occasions where the cavity door needs to be opened and closed frequently or the equipment placing space is narrow.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (8)
1. The utility model provides a vacuum push-pull type moves a door structure, installs on large-scale vacuum apparatus's cavity, its characterized in that includes: the sliding door comprises a sliding door body, a guide rail, a hanging mechanism and a door body pressing mechanism; the sliding door body corresponds to the opening of the cavity, and is hung on the guide rail through at least two hanging mechanisms; the hanging mechanism comprises a hanging body, an upper fixing seat, a movable hanging plate and a lower fixing seat which are sequentially connected, the hanging body is movably arranged on the guide rail, the lower fixing seat is fixedly connected with the upper end of the sliding door body, the upper end of the movable hanging plate is rotatably connected with the upper fixing seat through an upper movable shaft, the lower end of the movable hanging plate is rotatably connected with the lower fixing seat through a lower movable shaft, and the upper movable shaft and the lower movable shaft are both parallel to the sliding door body; the guide rail is horizontally and transversely arranged and positioned above the cavity, one end of the guide rail is fixed on the cavity through a support, the other end of the guide rail is suspended in the air and is longer than the cavity, and the sliding door body can move along the guide rail to open or close the cavity; the door body hold-down mechanism cooperates the sliding door body to fix on the cavity, and when the sliding door body closes the cavity, the sliding door body is gradually close to the door body hold-down mechanism, and after the sliding door body is contacted with the door body hold-down mechanism, the sliding door body is gradually horizontally moved to the cavity under the limit of the door body hold-down mechanism until the sliding door body completely closes the opening of the cavity.
2. A vacuum push-pull sliding door structure according to claim 1, wherein: when the sliding door body is in a cavity closing state, one side of the sliding door body close to the moving opening direction is a moving side, and the other side of the sliding door body is a fixed side; the door body pressing mechanism comprises an upper pressing mechanism used for limiting the upper end of the sliding door body, a lower pressing mechanism used for limiting the lower end of the sliding door body and a side pressing mechanism used for limiting the fixed side of the sliding door body.
3. A vacuum push-pull sliding door structure according to claim 2, wherein: an upper roller base is vertically fixed in the middle of the upper end of the sliding door body, and an upper roller is rotatably arranged on the upper roller base; the upper pressing mechanism is an upper pressing block fixed in the middle of the upper end of the cavity; the upper pressing block is C-shaped, and an opening of the upper pressing block is opposite to the upper roller; in the process of moving the sliding door body to close the cavity, the upper roller can be inserted into the upper pressing block from the opening of the upper pressing block in a rolling manner and is in clamping and press fit with the upper pressing block.
4. A vacuum push-pull sliding door structure according to claim 3, wherein: a lower roller base is vertically fixed in the middle of the lower end of the sliding door body, and a lower roller is rotatably arranged on the lower roller base; the lower pressing mechanism is a lower pressing block fixed in the middle of the lower end of the cavity; the lower pressing block is C-shaped, and an opening of the lower pressing block is opposite to the lower roller; when the movable door body is moved to close the cavity, the lower roller can be inserted into the lower pressing block from the opening of the lower pressing block in a rolling manner and is in clamping and press fit with the lower pressing block.
5. A vacuum push-pull sliding door structure according to claim 3 or 4, characterized in that: a wedge-shaped block is fixed in the middle of the fixed side of the sliding door body; the side pressing mechanism comprises a side pressing block which is fixed on the cavity and corresponds to the wedge-shaped block, and a side roller which is rotatably arranged on the side pressing block; the side compression block is in a C shape, and an opening of the side compression block is opposite to the wedge-shaped block; in the process of moving the sliding door body to close the cavity, the wedge-shaped block can be inserted into the side pressing block from the opening of the side pressing block and is in press fit with the side roller clamp on the side pressing block, and the side roller is in rolling contact with the wedge-shaped block.
6. A vacuum push-pull sliding door structure according to claim 2, wherein: a handle is fixedly arranged on the moving side of the moving door body.
7. A vacuum push-pull sliding door structure according to claim 1, wherein: the guide rail is fixed on the support, and the lower end of the guide rail is provided with a clamping groove for clamping the hanging mechanism.
8. A vacuum push-pull sliding door structure according to claim 7, wherein: the upper end of the hanger body is symmetrically provided with two movable rollers, and the two movable rollers are arranged on the guide rail in a rolling and clamping manner; the lower end of the hanger body is fixedly connected with the upper fixing seat through a hanger connecting shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920879846.5U CN210289525U (en) | 2019-06-12 | 2019-06-12 | Vacuum push-pull type sliding door structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920879846.5U CN210289525U (en) | 2019-06-12 | 2019-06-12 | Vacuum push-pull type sliding door structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210289525U true CN210289525U (en) | 2020-04-10 |
Family
ID=70096290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920879846.5U Expired - Fee Related CN210289525U (en) | 2019-06-12 | 2019-06-12 | Vacuum push-pull type sliding door structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210289525U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653426A (en) * | 2021-08-25 | 2021-11-16 | 中国建筑标准设计研究院有限公司 | Single-leaf push-pull type movable doorsill protective airtight door structure and airtight method thereof |
-
2019
- 2019-06-12 CN CN201920879846.5U patent/CN210289525U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653426A (en) * | 2021-08-25 | 2021-11-16 | 中国建筑标准设计研究院有限公司 | Single-leaf push-pull type movable doorsill protective airtight door structure and airtight method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200410 |
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| CF01 | Termination of patent right due to non-payment of annual fee |