Sliding door

Abstract

The utility model belongs to the technical field of electric doors, and discloses a sliding door. The sliding door comprises a door row, a driving assembly and a supporting piece, a lower beam is arranged at the bottom of the door row, the driving assembly is arranged below the lower beam and comprises a driving part, a driving gear and a rack, the driving gear is horizontally connected to an output shaft of the driving part, and the rack is fixed to the lower beam and extends in the length direction of the door row. The supporting piece is located below the lower beam, and the top of the supporting piece is higher than the driving gear. According to the sliding door, the door row can abut against the supporting piece after moving downwards and cannot make contact with the driving gear, in other words, when the door row moves downwards to the limiting position, the supporting piece can abut against the bottom of the lower beam, the effect of supporting the lower beam is achieved, and the lower beam is prevented from making contact with the driving gear and being clamped.

Description

Technical Field

[0001] The utility model relates to the technical field of electric doors, in particular to a sliding door. Background Art

[0002] A sliding door is a common electric door installed at the outer entrance of enterprises, factories, communities, etc. The existing sliding doors usually adopt a driving structure of a motor driving a gear rack for driving. In the prior art, the gear is usually horizontally arranged at the bottom of the door row. However, the ground is usually uneven. When the door row encounters a deeper pit during the moving process, the downward movement of the door row may contact the gear, even cause the gear to jam, and make the door row unable to move normally.

[0003] Therefore, there is an urgent need to provide a sliding door to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a sliding door, which can prevent the lower beam from contacting the driving gear and causing it to jam.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sliding door, comprising:

[0007] A door row, the bottom of the door row is provided with a lower beam;

[0008] A driving assembly, arranged below the lower beam, the driving assembly includes a driving part, a driving gear and a rack. The driving gear is horizontally connected to the output shaft of the driving part, the rack is fixed on the lower beam and extends along the length direction of the door row, and the driving gear meshes with the rack;

[0009] A support member, located below the lower beam, the top of the support member is higher than the driving gear.

[0010] As an optional solution, the support member includes a bracket and a support wheel rotatably arranged on the bracket. The support wheel is horizontally arranged and its axis is perpendicular to the length direction of the door row. The top of the support wheel is higher than the driving gear.

[0011] As an optional solution, the support member is arranged adjacent to the driving gear.

[0012] As an optional solution, the sliding door further includes a fixing plate, and both the driving assembly and the support member are fixed on the fixing plate.

[0013] As an alternative solution, it further includes a main box body which is arranged beside the driving component. The door row penetrates between the main box bodies. At the top inside the main box body, two opposed upper limit wheels are rotatably arranged, and the two upper limit wheels are respectively in rolling cooperation with the two sides at the top of the door row.

[0014] As an alternative solution, the main box body includes two columns and a cross beam horizontally connected between the tops of the two columns. The door row penetrates between the two columns, and the upper surface of the door row can be in contact with the lower surface of the cross beam.

[0015] As an alternative solution, the driving component includes a driving motor and a speed reducer. The speed reducer is connected to the output end of the driving motor, and the output shaft of the speed reducer is arranged upwards and connected to the driving gear.

[0016] As an alternative solution, at the bottom of the lower beam, there is an installation groove with an opening facing downwards. The rack is fixed on one of the two opposite side walls of the installation groove. The driving gear is located inside the installation groove, and part of the driving component is located inside the installation groove. Moreover, the orthographic projection of the driving component on the horizontal plane is located within the orthographic projection of the lower beam on the horizontal plane; part of the support member is also located inside the installation groove, and the top of the support member can be in contact with the bottom of the installation groove.

[0017] The beneficial effects of the present utility model:

[0018] The present utility model provides a sliding door. When in use, the driving component drives the driving gear to rotate. When the driving gear rotates, it will drive the rack meshed with it to move linearly, so that the door row can translate linearly. When the door row encounters a deeper pit during the movement, the starting end of the door row will move downwards. Since the top of the support member is higher than the driving gear, after the door row moves downwards, it will abut against the support member and will not contact the driving gear. That is to say, when the door row moves downwards to the limit position, the support member will abut against the bottom of the lower beam, playing a role in supporting the lower beam and preventing the lower beam from contacting the driving gear and getting stuck. Description of the drawings

[0019] Figure 1 is a schematic structural diagram of the sliding door provided by the present utility model;

[0020] Figure 2 is a partial enlarged view of the cooperation between the driving component and the lower beam provided by the present utility model;

[0021] Figure 3 is a schematic structural diagram of the driving component, the lower limit component and the support member provided by the present utility model;

[0022] Figure 4 is a cross-sectional view of the sliding door provided by the present utility model;

[0023] Figure 5 It is a schematic structural diagram of a driven assembly, a lower limit assembly and a support member provided by the present utility model;

[0024] Figure 6 It is a schematic partial structure diagram of a sliding door provided by the present utility model;

[0025] Figure 7 is Figure 1 The partial enlarged view at position A in

[0026] In the figure:

[0027] 10, door row; 11, lower beam; 111, installation groove; 12, deviation correction wheel;

[0028] 20, drive assembly; 21, drive motor; 22, reducer; 23, driving gear; 24, rack;

[0029] 30, lower limit assembly; 31, wheel axle; 32, lower limit wheel;

[0030] 40, support member; 41, bracket; 42, support wheel;

[0031] 50, fixing plate;

[0032] 60, main box body; 61, column; 62, cross beam; 63, upper limit wheel; 64, switch limit inductor;

[0033] 70, driven assembly; 71, driven gear; 72, support seat;

[0034] 80, support caster; 90, gantry; 91, limiting member; 911, guiding inclined surface. Detailed implementation manners

[0035] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that only the parts related to the present utility model rather than all the structures are shown in the drawings for the convenience of description.

[0036] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0037] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0038] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] This embodiment provides a sliding door, which can be installed at the outer entrance of enterprises, factories, communities, etc. As Figures 1 to 3 shown, the sliding door includes a door row 10, a driving assembly 20 and a support member 40. A lower beam 11 is provided at the bottom of the door row 10. The driving assembly 20 is disposed below the lower beam 11 and can be fixed on the ground. The driving assembly 20 includes a driving member, a driving gear 23 and a rack 24. The driving gear 23 is horizontally connected to the output shaft of the driving member. The rack 24 is fixed on the lower beam 11 and extends along the length direction of the door row 10. The driving gear 23 meshes with the rack 24. The support member 40 is located below the lower beam 11 and can be fixed on the ground. The top of the support member 40 is higher than the driving gear 23.

[0040] As Figure 1 shown, a plurality of support casters 80 are provided at the bottom of the lower beam 11 along its length direction. The plurality of support casters 80 are used to support the door row 10, so that the door row 10 can be stably supported on the ground and move along the ground.

[0041] When the sliding door provided in this embodiment is in use, the driving component drives the driving gear 23 to rotate. When the driving gear 23 rotates, it will drive the rack 24 engaged with it to move linearly, so that the door row 10 can translate linearly. When the door row 10 encounters a relatively deep pit during the movement, the starting end of the door row 10 will move downward. Since the top of the support member 40 is higher than the driving gear 23, after the door row 10 moves downward, it will abut against the support member 40 and will not contact the driving gear 23. That is to say, when the door row 10 moves downward to the limit position, the support member 40 will abut against the bottom of the lower beam 11, playing a role in supporting the lower beam 11 and preventing the lower beam 11 from contacting the driving gear 23 and causing it to jam.

[0042] In an alternative embodiment, as Figure 3 shown, the support member 40 includes a bracket 41 and a support wheel 42 rotatably provided on the bracket 41. The support wheel 42 is horizontally arranged and its axis is perpendicular to the length direction of the door row 10. The top of the support wheel 42 is higher than the driving gear 23. After the door row 10 moves downward, it will abut against the support wheel 42. As the door row 10 moves, the support wheel 42 will also rotate accordingly. The friction between the door row 10 and the support wheel 42 is rolling friction, which has a smaller frictional force and smoother movement compared to sliding friction, and prevents abnormal noises caused by sliding friction.

[0043] In an alternative embodiment, as Figure 3 shown, the support member 40 is arranged adjacent to the driving gear 23. With this arrangement, when the door row 10 moves downward, the support member 40 can timely provide good protection for the driving gear 23.

[0044] In an alternative embodiment, the axial width of the driving gear 23 is greater than the width of the rack 24. When the ground is uneven, it will cause the door row 10 to move up and down, and the rack 24 will also move up and down accordingly. At this time, the rack 24 will engage with the upper or lower part of the driving gear 23. By setting the axial width of the driving gear 23 to be greater than the width of the rack 24, even if the door row 10 moves up and down, the rack 24 can always be engaged with the driving gear 23 for transmission.

[0045] In an alternative embodiment, as Figure 3 shown, the driving component includes a driving motor 21 and a speed reducer 22. The speed reducer 22 is connected to the output end of the driving motor 21. The output shaft of the speed reducer 22 is arranged upward and connected to the driving gear 23. The driving motor 21 drives the output shaft of the speed reducer 22 to rotate, thereby driving the driving gear 23 to rotate. When the driving gear 23 rotates, it will drive the rack 24 engaged with it to move linearly, so that the door row 10 can translate linearly. By adopting the above driving method of the driving motor 21, the speed reducer 22 and the gear rack 24, the transmission is more accurate and the transmission efficiency is higher, thereby improving the accuracy of opening and closing the door.

[0046] In an alternative embodiment, the drive motor 21 is a DC 24V motor. In the prior art, the drive motor 21 is usually powered by a 220V AC power supply, which poses a great safety hazard. Therefore, by changing the drive motor 21 from a 220V AC power supply motor to a DC 24V DC motor and using a safe voltage for driving, it is not easy to cause electric shock accidents, eliminating the voltage safety hazard and ensuring safety during use.

[0047] In an alternative embodiment, as Figure 1 and Figure 4 shown, the moving door further includes a main housing 60. The main housing 60 is disposed beside the drive assembly 20. The interior of the main housing 60 is used to accommodate electrical components such as a controller and wiring harness that are electrically connected to the drive assembly 20. The main housing 60 is configured in a gantry structure. The door row 10 passes through between the main housings 60. Two opposite upper limit wheels 63 are rotatably provided at the top inside the main housing 60. The two upper limit wheels 63 are respectively in rolling cooperation with both sides of the top of the door row 10. Through the cooperation of the two upper limit wheels 63 and the upper end of the door row 10, it is prevented that the upper end of the door row 10 is skewed during the moving process.

[0048] In an alternative embodiment, as Figure 4 shown, the main housing 60 includes two columns 61 and a cross beam 62 horizontally connected between the tops of the two columns 61. The door row 10 passes through between the two columns 61. The upper surface of the door row 10 can abut against the lower surface of the cross beam 62. When the door row 10 encounters a relatively high raised mound during the moving process, the door row 10 may move up to the limit position. At this time, the upper part of the door row 10 will abut against the lower surface of the cross beam 62, preventing the door row 10 from moving up too high and causing the driving gear 23 to disengage from the rack 24.

[0049] As Figure 4 shown, a switch limit inductor 64 is provided at the bottom of the column 61. Magnets that are inductively cooperated with the switch limit inductor 64 are respectively provided at two different positions of the door row 10 in its length direction. The switch limit inductor 64 senses the magnets at two different positions, thereby achieving the two limit positions of the opening and closing of the door row 10.

[0050] In an alternative embodiment, as Figure 2 and Figure 3As shown in the figure, the sliding door further includes a lower limit component 30. The lower limit component 30 includes a wheel axle 31 and a lower limit wheel 32. The wheel axle 31 is vertically arranged, and the lower limit wheel 32 is rotatably arranged on the wheel axle 31. The rack 24 is fixed on one of the two opposite side walls of the installation groove 111, and the circumferential surface of the lower limit wheel 32 abuts against the other of the two opposite side walls of the installation groove 111. In this embodiment, the rack 24 is fixed on the left side wall of the installation groove 111, the driving gear 23 meshes with the rack 24 on the left side, and the circumferential surface of the lower limit wheel 32 abuts against the right side wall of the installation groove 111. Through the combined action of the driving gear 23 and the lower limit wheel 32, the moving direction of the lower end of the door row 10 can be restricted, preventing the door row 10 from shifting during movement, resulting in misalignment between the driving gear 23 and the rack 24 and causing movement jamming.

[0051] As Figure 3 shown in the figure, a set of lower limit components 30 are respectively arranged on both sides of the driving component 20 along the length direction of the door row 10. In this way, through the combined cooperation of the driving gear 23 and the two lower limit wheels 32, the moving direction of the door row 10 is further restricted, preventing the door row 10 from shifting during movement, resulting in misalignment between the driving gear 23 and the rack 24 and causing movement jamming.

[0052] In an alternative embodiment, as Figure 3 shown in the figure, the sliding door further includes a fixing plate 50. The reducer 22 of the driving component 20, the bracket 41 of the support component 40, and the wheel axle 31 of the lower limit component 30 are all fixed on the fixing plate 50, and the fixing plate 50 can be directly fixed on the ground. By providing the fixing plate 50, the driving component 20, the lower limit component 30, and the support component 40 can all be integrated on the fixing plate 50, with a high degree of integration, reasonable layout, delicate and compact structure, and saving space occupation.

[0053] In an alternative embodiment, as Figure 2 shown in the figure, the bottom of the lower beam 11 is provided with an installation groove 111 with an opening facing downwards. The rack 24 is fixed on one of the two opposite side walls of the installation groove 111. The driving gear 23 is located in the installation groove 111, and part of the driving component is located in the installation groove 111, and the orthographic projection of the driving component 20 on the horizontal plane is located within the orthographic projection of the lower beam 11 on the horizontal plane. Specifically, in this embodiment, as Figure 1 shown in the figure, due to the existence of the support caster 80, there is a certain distance between the lower beam 11 and the ground. Again, as Figure 2 shown in the figure, the driving gear 23 is completely located in the installation groove 111, achieving waterproof, dustproof, and stain-proof effects, avoiding rust and corrosion of the driving gear 23. Part of the driving motor 21 and the reducer 22 are located in the installation groove 111, and the other part is located outside the installation groove 111 but can also be covered by the lower beam 11, and the driving motor 21 and the reducer 22 themselves also have a housing to achieve the waterproof, dustproof, and stain-proof effects.

[0054] With the above settings, the driving component 20 is hiddenly arranged in the installation groove 111. By setting the orthographic projection of the driving component 20 on the horizontal plane within the orthographic projection of the lower beam 11 on the horizontal plane, the lower beam 11 can shield and cover the driving component 20, achieving waterproof, dustproof and stain-proof effects, avoiding rust and corrosion of the driving component 20, extending the service life of the driving component 20, ensuring the safety of the equipment and personnel, reducing potential safety hazards, and making the driving component 20 basically invisible from the outside, achieving an aesthetic appearance.

[0055] Continue to refer to Figure 2 , the support member 40 is also partially located in the installation groove 111. Specifically, the support wheel 42 is located in the installation groove 111, and the bracket 41 is basically located outside the installation groove 111 but is also shielded by the installation groove 111. Moreover, the top of the support wheel 42 can abut against the bottom of the installation groove 111 when the door row 10 moves downward, so as to support the lower beam 11 and prevent the lower beam 11 from contacting the driving gear 23 and causing it to jam.

[0056] In an alternative embodiment, as Figure 1 shown, the sliding door further includes a driven component 70. The driven component 70 is arranged at an interval from the driving component 20 along the length direction of the door row, and the driven component 70 is also hiddenly arranged directly below the lower beam 11. Specifically, as Figure 5 shown, the driven component 70 includes a driven gear 71 and a support seat 72. The driven gear 71 is rotatably arranged on the support seat 72. The driven gear 71 is the same as the driving gear 23, and is also horizontally arranged and meshes with the rack 24 for transmission, so as to ensure the stable operation of the door row 10.

[0057] In an alternative embodiment, as Figure 5 shown, the above-mentioned lower limit component 30 and support member 40 are also arranged beside the driven component 70. A fixing plate 50 is also arranged at the bottom of the support seat 72, and the lower limit component 30 and support member 40 beside the driven component 70 are integrally integrated on the fixing plate 50 to form an integrated structure. Through the cooperation of the driven gear 71 and the two lower limit wheels 32 beside it, the moving direction of the door row 10 is further restricted, preventing the door row 10 from shifting during movement and causing the driven gear 71 to be misaligned with the rack 24, resulting in movement jamming. By arranging a support wheel 42 beside the driven gear 71, it can support the lower beam 11 and prevent the lower beam 11 from contacting and rubbing against the driven gear 71, causing abnormal noise or jamming.

[0058] As Figure 1 shown, the sliding door further includes a gantry 90. When the door row 10 is fully closed, in the closed state as Figure 1 shown, the door row 10 passes through the gantry 90, and the gantry 90 can provide lateral support for the door row 10 to keep the door row 10 stable when it is closed.

[0059] Further, as Figure 6 shown, limiting members 91 are respectively provided on both inner sides of the gantry 90. An opening area is jointly defined between the two limiting members 91. When the door row 10 is closed, the door row 10 enters the opening area, and the limiting members 91 on both sides can laterally support the door row 10, so that the door row 10 remains stable when it is closed.

[0060] Further, as Figure 6 and Figure 7 shown, a guiding inclined surface 911 is provided on the side of the limiting member 91 close to the door row 10, and two deviation-correcting wheels 12 are provided at the end of the door row 10. When the door row 10 is closed, if the door row 10 is slightly offset, through the cooperation of the deviation-correcting wheels 12 and the guiding inclined surface 911, the door row 10 can be corrected, so that the door row 10 accurately enters the opening area between the two limiting members 91 to realize the closing of the door row 10.

[0061] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Sliding door, characterized in that, Comprising: A door row (10), a lower beam (11) is provided at the bottom of the door row (10); A driving assembly (20), arranged below the lower beam (11), the driving assembly (20) includes a driving component, a driving gear (23) and a rack (24), the driving gear (23) is horizontally connected to the output shaft of the driving component, the rack (24) is fixed on the lower beam (11) and extends along the length direction of the door row (10), and the driving gear (23) meshes with the rack (24); A support member (40), located below the lower beam (11), the top of the support member (40) is higher than the driving gear (23).

2. The sliding door according to claim 1, characterized in that, The support member (40) includes a bracket (41) and a support wheel (42) rotatably arranged on the bracket (41), the support wheel (42) is horizontally arranged and its axis is perpendicular to the length direction of the door row (10), and the top of the support wheel (42) is higher than the driving gear (23).

3. The sliding door according to claim 1, wherein, The support member (40) is arranged adjacent to the driving gear (23).

4. The sliding door according to claim 3, wherein, The sliding door further includes a fixing plate (50), and both the driving assembly (20) and the support member (40) are fixed on the fixing plate (50).

5. The sliding door according to any one of claims 1-4, characterized in that It further includes a main box body (60), the main box body (60) is arranged beside the driving assembly (20), the door row (10) passes through between the main box bodies (60), and two opposite upper limit wheels (63) are rotatably arranged at the top inside the main box body (60), and the two upper limit wheels (63) are respectively in rolling cooperation with both sides of the top of the door row (10).

6. The sliding door according to claim 5, characterized in that, The main box body (60) includes two upright columns (61) and a cross beam (62) horizontally connected between the tops of the two upright columns (61), the door row (10) passes through between the two upright columns (61), and the upper surface of the door row (10) can abut against the lower surface of the cross beam (62).

7. The sliding door according to any one of claims 1-4, characterized in that, The driving component includes a driving motor (21) and a speed reducer (22), the speed reducer (22) is connected to the output end of the driving motor (21), and the output shaft of the speed reducer (22) is arranged upward and connected to the driving gear (23).

8. The sliding door according to any one of claims 1 to 4, characterized in that, An installation groove (111) with an opening facing downward is provided at the bottom of the lower beam (11), the rack (24) is fixed on one of the two opposite side walls of the installation groove (111), the driving gear (23) is located in the installation groove (111), part of the driving component is located in the installation groove (111), and the orthographic projection of the driving assembly (20) on the horizontal plane is located within the orthographic projection of the lower beam (11) on the horizontal plane; part of the support member (40) is also located in the installation groove (111), and the top of the support member (40) can abut against the bottom of the installation groove (111).

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