CN219007808U - Telescopic extension structure and half-height type safety door - Google Patents
Telescopic extension structure and half-height type safety door Download PDFInfo
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- CN219007808U CN219007808U CN202223236189.3U CN202223236189U CN219007808U CN 219007808 U CN219007808 U CN 219007808U CN 202223236189 U CN202223236189 U CN 202223236189U CN 219007808 U CN219007808 U CN 219007808U
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- extension
- sliding
- fixed side
- linear guide
- guide rail
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Abstract
The utility model belongs to the technical field of rail transit, and particularly relates to a telescopic extension structure and a half-height type safety door. The telescopic extension structure comprises a movable extension arm and a linear guide rail; the linear guide rail is fixedly connected with the fixed side box; the movable extension arm is in sliding connection with the sliding door and in sliding connection with the linear guide rail, and one end of the movable extension arm can extend to the outside of the fixed side box. The movable extension arm can retract when the door is opened, so that the space is saved and collision is avoided; when the door is closed, the movable extension arm can extend out, so that the sliding door is prevented from being separated from the fixed side box.
Description
Technical Field
The utility model belongs to the technical field of rail transit, and particularly relates to a telescopic extension structure and a half-height type safety door.
Background
Based on half-height platform door sliding door 2 'in the closing or motion process, sliding support structure needs to be arranged on the upper portion of sliding door 2', and the implementation mode of existing structure is fixed extension arm 3 (shown in figure 1) at the tail portion of the upper end of the sliding door, and fixed extension arm 3 can ensure that sliding door 2 'is not separated from fixed side box 1' when closing the door, and plays a guiding role when opening the door simultaneously. The fixed extension arm 3 used in the existing structure needs to protrude the width of the sliding door 2 'by about 200-250mm, and referring to fig. 2, in the opened state of the sliding door 2' of the adjacent unit, the length of the fixed extension arm 3 occupies a part of the space requirement. Under the condition that the unit intervals are the same, the sliding door with small opening degree cannot be influenced, but the fixed extension arm can influence the door opening process when the opening degree is large. The fixed extension arm can occupation space when sliding door opens, restriction aperture, and two fixed extension arms still appear colliding simultaneously easily, lead to opening a door the trouble.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides a telescopic extension structure, and the movable extension arm can retract when in a door opening state, so that the space is saved, and the collision is avoided; when the door is closed, the movable extension arm can extend out, so that the sliding door is prevented from being separated from the fixed side box.
Another object of the present utility model is to provide a half height safety door that meets the requirement of a large opening degree with the sliding door in the same plane.
In order to solve the defects in the prior art, the technical scheme provided by the utility model is as follows:
a telescopic extension structure comprises a movable extension arm and a linear guide rail;
the linear guide rail is fixedly connected with the fixed side box;
the movable extension arm is in sliding connection with the sliding door and is in sliding connection with the linear guide rail, and one end of the movable extension arm can extend to the outside of the fixed side box.
Preferably, the device further comprises a sliding block; the sliding block is in sliding connection with the linear guide rail and is fixedly connected with the movable extension arm;
limiting blocks are arranged at two ends of the linear guide rail.
Preferably, the linear guide rail is fixed at the end part of the upper end face of the fixed side box.
Preferably, the upper part of the side surface of the sliding door, which is far away from the fixed side box, is provided with a horizontal guide groove; the upper end of the side surface of the sliding door, which is far away from the fixed side box, is a sliding contact surface, and the sliding contact surface is positioned above the guide groove.
Preferably, the movable extension arm comprises a first extension part and a second extension part; the first extension part is in a flat plate shape, and the lower end surface of the first extension part is in sliding connection with the linear guide rail; the second section of the extension part is L-shaped, the length of the second section of the extension part is greater than that of the first extension part, the second extension part is connected with the first extension part above, one end of the second extension part is flush with one end of the extension part, the other end of the second extension part can slide to the outside of the fixed side box, and the second extension part is in sliding connection with the sliding contact surface.
Preferably, a plurality of guide wheels and two sliding contact parts are arranged on the lower end surface of the second extension part; the sliding contact part is in a flat plate shape and is vertically arranged to be contacted with the sliding contact surface; the guide wheel is positioned between the two slide way contact parts and is in sliding connection with the sliding contact surface.
Preferably, limiting plates are arranged at two ends of the sliding contact surface.
Preferably, the sliding door further comprises a top cover, wherein the top cover is fixed on the fixed side box and used for covering the fixed side box, and a channel which is convenient for the movable extension arm and the sliding door to slide is arranged at the end part of the top cover.
A half-height safety door comprises the telescopic extension structure.
The utility model has the beneficial effects that:
according to the telescopic extension structure provided by the utility model, the movable extension arm can retract when the door is opened, so that the space is saved, and the collision is avoided; when the door is closed, the movable extension arm can extend out, so that the sliding door is prevented from being separated from the fixed side box; the requirement of large opening degree can be met under the condition that the sliding doors are located on the same plane.
Drawings
FIG. 1 is a schematic view of a conventional sliding door;
FIG. 2 is a schematic view showing an opened state of a conventional sliding door;
FIG. 3 is a schematic view of a telescopic extension provided by the present utility model;
FIG. 4 is a schematic view of a movable extension arm and a linear guide rail according to the present utility model;
FIG. 5 is a schematic view of a movable extension arm and a sliding door according to the present utility model;
FIG. 6 is a schematic view of a telescoping extension when the sliding door is fully closed;
FIG. 7 is a schematic view of a telescoping extension with the sliding door fully open;
FIG. 8 is a schematic view of a top cover according to the present utility model;
1. 1' is a fixed side box; 2. 2' is a sliding door; 21 is a sliding contact surface; 211 is a limiting plate; 22 are guide grooves; 3 is a fixed extension arm;
4 is a movable extension arm; 41. an extension part I; 42 is an extension II; 43 is a sliding contact portion;
5 is a sliding block; 6 is a linear guide rail; 7 is a guide wheel; 8. a limiting block; 9. and a top cover.
Detailed Description
The utility model is further described below in connection with embodiments. The following embodiments are only for more clearly illustrating the technical aspects of the present utility model, and should not be used to limit the scope of the present utility model.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The embodiment of the utility model provides a telescopic extension structure, which is shown in fig. 3, 6 and 7, and comprises a movable extension arm 4 and a linear guide rail 6; the linear guide rail 6 is fixedly connected with the fixed side box 1; the movable extension arm 4 is slidably connected with the sliding door 2 and slidably connected with the linear guide rail 6, and one end of the movable extension arm 4 can be slidably extended to the outside of the fixed side case 1.
The linear guide 6 may be fixedly connected to the upper end surface of the fixed side case 1, or may be connected to other parts of the fixed side case, and for aesthetic reasons and structural simplicity, it is preferable that the linear guide 6 be fixedly connected to the upper end surface of the fixed side case 1.
When the sliding door needs to be opened, the sliding door is driven to move through the existing driving mechanism, and when the sliding door moves, the telescopic extension structure plays a role in guiding and supporting, and the sliding door is in a completely opened state as shown in fig. 7. The movable extension arm gradually moves from the tail end of the sliding door to the front end of the sliding door for matching, the movable extension arm does not occupy the tail space of the sliding door, and the space is saved when the door is opened, so that collision is avoided.
When the sliding door needs to be closed, the driving mechanism drives the sliding door to move, the telescopic extension structure plays a role in guiding and supporting, and the sliding door is in a completely closed state as shown in fig. 6. When the door is closed, the movable extension arm part extends to the outside of the fixed side box, so that the sliding door is prevented from being separated from the fixed side box.
Specifically, referring to fig. 3, 4 and 7, the telescopic extension further includes a slider 5; the sliding block 5 is in sliding connection with the linear guide rail 6 and is fixedly connected with the movable extension arm 4. Limiting blocks 8 are arranged at two ends of the linear guide rail and used for limiting the sliding blocks. The linear guide 6 is fixed to an end of the upper end face of the fixed side case 1.
Referring to fig. 5, 6 and 7, the upper side of the sliding door 2, which is remote from the fixed side case 1, is provided with a horizontal guide groove 22. The upper end of the sliding door 2 is not contacted with the fixed side box 1. The upper end of the side surface of the sliding door 2 away from the fixed side box 1 is a sliding contact surface 21, and the sliding contact surface 21 is positioned above the guide groove 22.
Referring to fig. 3, 4, 6 and 7, the movable extension arm 4 includes a first extension part 41 and a second extension part 42, the first extension part 41 is flat, and the lower end surface is fixedly connected with the upper end surface of the slider 5 through a bolt; the second extension part 42 is L-shaped in cross section, and is longer than the first extension part 41, and is connected with the first extension part 41 above, one end of the second extension part is flush with the end part of the first extension part 41, and the other end of the second extension part can slide to the outside of the fixed side box 1. The second extension 42 is slidably connected to the sliding contact surface 21 of the sliding door 2. The lower end surface of the second extension 42 extends into the guide groove 22.
Referring to fig. 3, 4 and 5, a plurality of guide wheels 7 and two sliding contact parts 43 are arranged on the lower end surface of the second extension part 42; the sliding contact portion 43 is of a flat plate type and is vertically set up to be in contact with the sliding contact surface 21 of the sliding door 2. The guide wheel 7 is located between the two slide contact portions 43 and slidably connected to the sliding contact surface 21 of the sliding door 2.
Referring to fig. 5 and 7, two ends of the sliding contact surface 21 are provided with limiting plates 211, and the limiting plates 211 are matched with the sliding contact portion 43 for limiting the movable extension arm 4.
If the friction force between the sliding block and the linear guide rail is smaller, when the sliding door is opened, the sliding door and the movable extension arm are relatively static, the sliding block slides along the linear guide rail, when the sliding block moves to the end part of the linear guide rail and is limited by the limiting block, the sliding block cannot slide again, namely, the movable extension arm cannot move any more, the position of the movable extension arm is shown in fig. 7, the movable extension arm is not exposed outside the fixed side box, then the sliding door continues to move, at the moment, the sliding door and the movable extension arm relatively slide until the sliding door is completely opened, as shown in fig. 7, the movable extension arm is limited at the linear guide rail and cannot occupy space. When the sliding door needs to be closed, the sliding block slides along the linear guide rail, when the sliding block moves to the end part of the linear guide rail and is limited by the limiting block, the sliding block cannot slide any more, namely the movable extension arm cannot move any more, the position of the movable extension arm is shown in fig. 6, at the moment, the outer end part of the second extension part extends to the outside of the fixed side box, the sliding door continues to move, at the moment, the sliding door and the movable extension arm slide relatively, and the second extension part can support and guide the sliding door until the sliding door is completely closed, as shown in fig. 6.
If the friction between the sliding door and the movable extension arm is smaller than the friction between the sliding block and the linear guide rail, when the sliding door is opened, the movable extension arm and the linear guide rail are relatively static, the sliding door and the movable extension arm relatively slide, when the sliding contact part of the sliding door touches the limiting plate at the end part of the sliding contact surface, the movable extension arm and the sliding door are relatively static, and then the movable extension arm slides along the linear guide rail, and when the sliding block moves to the end part of the linear guide rail to be limited by the limiting block, the sliding door is completely opened at the moment, as shown in fig. 7. When the sliding door is closed, the movable extension arm and the linear guide rail are relatively static, the sliding door and the movable extension arm relatively slide, when the sliding contact part of the sliding door touches the limiting plate at the end part of the sliding contact surface, the movable extension arm and the sliding door are relatively static, and then the movable extension arm slides along the linear guide rail, and when the sliding block moves to the end part of the linear guide rail to be limited by the limiting block, the sliding door is completely closed at the moment, as shown in fig. 6.
Of course, if the friction between the sliding door and the movable extension arm is equivalent to the friction between the sliding block and the linear guide rail, the movable extension arm can slide along the linear guide rail while the sliding door and the movable extension arm slide relatively, and as the limiting blocks are arranged at the two ends of the linear guide rail and the limiting plates are arranged at the two ends of the sliding contact surface, the sliding door can be ensured to be just completely opened or completely closed when the sliding contact part touches the limiting plates and the sliding block touches the limiting blocks.
In an alternative embodiment of the present utility model, referring to fig. 8, the telescopic extension further includes a top cover 9, where the top cover 9 is fixed to the fixed side case 1 and is used to cover the fixed side case 1, and a channel for facilitating sliding of the extension second 42 and the sliding door 2 is provided at an end of the top cover 9. When the sliding door 2 is fully opened, the sliding door 2 is positioned below the top cover 9.
The utility model also provides a half-height type safety door which comprises the telescopic extension structure.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.
Claims (9)
1. The telescopic extension structure is characterized by comprising a movable extension arm and a linear guide rail;
the linear guide rail is fixedly connected with the fixed side box;
the movable extension arm is in sliding connection with the sliding door and is in sliding connection with the linear guide rail, and one end of the movable extension arm can extend to the outside of the fixed side box.
2. The telescoping elongated structure according to claim 1, further comprising a slider; the sliding block is in sliding connection with the linear guide rail and is fixedly connected with the movable extension arm;
limiting blocks are arranged at two ends of the linear guide rail.
3. The telescopic extension as claimed in claim 1, wherein the linear guide is fixed to an end of the upper end surface of the fixed side case.
4. The telescopic extension as claimed in claim 1, wherein the sliding door is provided with a horizontal guide groove at an upper portion of a side surface thereof remote from the fixed side case; the upper end of the side surface of the sliding door, which is far away from the fixed side box, is a sliding contact surface, and the sliding contact surface is positioned above the guide groove.
5. The extendable structure of claim 4, wherein the movable extension arm comprises an extension one and an extension two; the first extension part is in a flat plate shape, and the lower end surface of the first extension part is in sliding connection with the linear guide rail; the second section of the extension part is L-shaped, the length of the second section of the extension part is greater than that of the first extension part, the second extension part is connected with the first extension part above, one end of the second extension part is flush with one end of the extension part, the other end of the second extension part can slide to the outside of the fixed side box, and the second extension part is in sliding connection with the sliding contact surface.
6. The telescopic extension as claimed in claim 5, wherein a plurality of guide wheels and two sliding contact parts are provided on the lower end surface of the extension part two; the sliding contact part is in a flat plate shape and is vertically arranged to be contacted with the sliding contact surface; the guide wheel is positioned between the two sliding contact parts and is in sliding connection with the sliding contact surface.
7. The telescopic extension of claim 6, wherein the sliding contact surfaces are provided with limiting plates at both ends.
8. The telescopic extension of claim 1, further comprising a top cover secured to the fixed side case for covering the fixed side case, the top cover having a channel at an end thereof for facilitating sliding movement of the movable extension arm and the sliding door.
9. A half height safety door comprising a telescopic extension as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223236189.3U CN219007808U (en) | 2022-12-05 | 2022-12-05 | Telescopic extension structure and half-height type safety door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223236189.3U CN219007808U (en) | 2022-12-05 | 2022-12-05 | Telescopic extension structure and half-height type safety door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219007808U true CN219007808U (en) | 2023-05-12 |
Family
ID=86235942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223236189.3U Active CN219007808U (en) | 2022-12-05 | 2022-12-05 | Telescopic extension structure and half-height type safety door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219007808U (en) |
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2022
- 2022-12-05 CN CN202223236189.3U patent/CN219007808U/en active Active
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