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 lower limiting assembly, a lower beam is arranged at the bottom of the door row, and the lower beam is provided with a first side and a second side which are oppositely arranged in the horizontal direction; the driving assembly comprises a driving part, a driving gear and a rack, the driving gear is horizontally connected to an output shaft of the driving part, the rack is fixed to one of the first side and the second side and extends in the length direction of the door row, and the driving gear is meshed with the rack; the lower limiting assembly comprises a vertically-arranged wheel shaft and a lower limiting wheel, the lower limiting wheel is rotationally arranged on the wheel shaft, and the circumferential face of the lower limiting wheel abuts against the other side of the first side and the second side. According to the sliding door, through the combined action of the driving gear and the lower limiting wheel, the moving direction of the lower end of the door row can be limited, and moving clamping stagnation caused by dislocation of the driving gear and the rack due to deviation of the door row in the moving process is prevented.

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 entrance of enterprises, factories, communities and other places. The existing sliding doors usually adopt a driving structure of a motor driving a gear and a rack. The rack is fixed on the door row. When in use, the motor drives the gear to rotate, and when the gear rotates, it drives the rack meshed with it to move linearly, so that the door row can move linearly. However, the door row may shift during the movement, resulting in misalignment between the gear and the rack and causing movement jams.

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

[0004] The purpose of the utility model is to provide a sliding door, which can solve the technical problem that the active gear and the rack are misaligned due to the shift of the door row during the movement, resulting in movement jams.

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

[0006] A sliding door, comprising:

[0007] A door row, the bottom of which is provided with a lower beam, and the lower beam has a first side and a second side arranged oppositely in the horizontal direction;

[0008] A driving assembly, including a driving part, an active gear and a rack. The active gear is horizontally connected to the output shaft of the driving part. The rack is fixed on one of the first side and the second side, and extends along the length direction of the door row. The active gear meshes with the rack;

[0009] A lower limit assembly, including a wheel shaft and a lower limit wheel. The wheel shaft is vertically arranged, and the lower limit wheel is rotatably arranged on the wheel shaft. The circumferential surface of the lower limit wheel abuts against the other side of the first side and the second side.

[0010] As an optional solution, the lower limit assembly is arranged adjacent to the active gear.

[0011] As an optional solution, at least two lower limit assemblies are arranged beside the active gear, and at least two lower limit assemblies are arranged at intervals along the length direction of the door row.

[0012] As an alternative solution, an installation groove with an opening facing downwards is provided at the bottom of the lower beam. The two opposite side walls of the installation groove are respectively the first side and the second side. Both the driving gear and the lower limiting wheel are located in the installation groove, and the orthographic projection of the driving assembly on the horizontal plane is located within the orthographic projection of the lower beam on the horizontal plane.

[0013] As an alternative solution, the sliding door further includes a fixing plate, and both the driving assembly and the lower limiting assembly are fixed on the fixing plate.

[0014] As an alternative solution, the sliding door further includes a driven assembly. The driven assembly and the driving assembly are arranged at intervals along the length direction of the door row. The driven assembly includes a driven gear and a support seat. The driven gear is rotatably arranged on the support seat, and the driven gear meshes with the rack for transmission.

[0015] As an alternative solution, the lower limiting assembly is also arranged beside the driven assembly.

[0016] As an alternative solution, it further includes a main box body. The main box body is arranged beside the driving assembly. The door row passes through between the main box bodies. Two opposite upper limiting wheels are rotatably arranged at the top inside the main box body, and the two upper limiting wheels respectively rollingly cooperate with the two sides of the top of the door row.

[0017] Advantages of the present utility model:

[0018] The present utility model provides a sliding door. When in use, a driving component drives the driving gear to rotate. When the driving gear rotates, it will drive the rack meshing with it to move linearly, so that the door row can translate linearly. During the movement of the door row, on one of the first side and the second side of the lower beam, the driving gear cooperates with the rack to play a transmission role, and at the same time, the driving gear plays a limiting role in one direction on the rack, thereby playing a limiting role in one direction on the lower end of the door row. On the other side of the first side and the second side, the circumferential surface of the lower limiting wheel abuts against the lower beam, playing a limiting role in the opposite direction on the lower end of the door row. Therefore, through the combined action of the driving gear and the lower limiting wheel, the moving direction of the lower end of the door row can be restricted, preventing the door row from shifting during movement, resulting in misalignment between the driving gear and the rack and causing movement jamming. 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 schematic structural diagram of the driving assembly, the lower limiting assembly and the supporting assembly provided by the present utility model;

[0021] Figure 3 It is a partial enlarged view of the mating part between the driving component and the lower beam provided by the present utility model;

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

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

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

[0025] Figure 7 It is Figure 1 a partial enlarged view of the position A in

[0026] In the figure:

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

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

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

[0030] 40, support component; 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 component; 71, driven gear; 72, support seat;

[0034] 80, support caster; 90, gantry; 91, limit part; 911, guiding inclined plane. Specific embodiments

[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 for the sake of description, only parts related to the present utility model are shown in the drawings rather than all structures.

[0036] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. 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 circumstances.

[0037] In the present utility model, unless otherwise clearly defined and limited, 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 other features between them. 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 relationship shown in the drawings. It is 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. Therefore, it 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 do not have special meanings.

[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 lower limit assembly 30. A lower beam 11 is provided at the bottom of the door row 10. The lower beam 11 has a first side and a second side arranged oppositely in its width direction; the driving assembly 20 is arranged below the lower beam 11 and can be fixed on the ground. The driving assembly 20 includes a driving part, a driving gear 23, and a rack 24. The driving gear 23 is horizontally connected to the output shaft of the driving part. The rack 24 is fixed on one of the first side and the second side and extends along the length direction of the door row 10. The driving gear 23 meshes with the rack 24; the lower limit assembly 30 can be fixed on the ground and 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 circumferential surface of the lower limit wheel 32 abuts against the other side of the first side and the second side.

[0040] Taking the case where the rack 24 is fixed on the first side and the circumferential surface of the lower limit wheel 32 abuts against the second side as an example, for the sliding door provided in this embodiment, during 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. During the movement of the door row 10, on the first side of the lower beam 11, the driving gear 23 and the rack 24 cooperate to play a transmission role. At the same time, the driving gear 23 plays a limiting role in one direction for the rack 24, so as to play a limiting role in one direction for the lower end of the door row 10. On the second side, the circumferential surface of the lower limit wheel 32 abuts against the lower beam 11, playing a limiting role in the opposite direction for the lower end of the door row 10. Therefore, 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 dislocation between the driving gear 23 and the rack 24 and causing movement jamming. When the rack 24 is fixed on the second side and the circumferential surface of the lower limit wheel 32 abuts against the first side, the above effects can also be achieved, which will not be elaborated here.

[0041] In addition, after the circumferential surface of the lower limit wheel 32 abuts against the lower beam 11, as the door row 10 moves, the lower limit wheel 32 will also rotate accordingly. The friction between the lower beam 11 and the lower limit wheel 32 is rolling friction, which has a smaller friction force compared to sliding friction, moves more smoothly, and prevents abnormal noises caused by sliding friction.

[0042] Specifically, as Figure 3 shown, an installation groove 111 with an opening facing down is provided at the bottom of the lower beam 11. The two opposite side walls of the installation groove 111 are the first side and the second side respectively. The driving gear 23 and the lower limit wheel 32 are both located in the installation groove 111. Exemplarily, as Figure 3 shown, the left side wall of the installation groove 111 is the first side, and the right side wall of the installation groove 111 is the second side. The rack 24 is fixed to the first side, that is, fixed to the left side wall of the installation groove 111, and the circumferential surface of the lower limit wheel 32 abuts against the second side, that is, the right side wall of the installation groove 111. During the movement of the door row 10, the driving gear 23 can restrict the leftward movement of the rack 24, thereby restricting the rightward movement of the door row 10. The circumferential surface of the lower limit wheel 32 abuts against the right side wall of the installation groove 111, which can restrict the leftward movement of the lower end of the door row 10. Therefore, 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 dislocation between the driving gear 23 and the rack 24 and causing movement jamming.

[0043] Specifically, in this embodiment, as Figure 2As shown, due to the existence of the supporting casters 80, there is a certain distance between the lower beam 11 and the ground. The driving gear 23 is completely located within the installation groove 111, achieving waterproof, dustproof, and stain-proof functions, preventing the driving gear 23 from rusting and corroding. The driving component is partially located within 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.

[0044] Through the above settings, the driving assembly 20 can be hiddenly arranged within the installation groove 111. By setting the orthographic projection of the driving assembly 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 assembly 20, achieving waterproof, dustproof, and stain-proof functions, preventing the driving assembly 20 from rusting and corroding, extending the service life of the driving assembly 20, ensuring the safety of the equipment and personnel, reducing potential safety hazards, and making the driving assembly 20 basically invisible from the outside, achieving an aesthetic appearance.

[0045] As Figure 2 shown, the lower limit component 30 is arranged adjacent to the driving gear 23. With this arrangement, the structure is more compact, and when the door row 10 moves, the lower limit wheel 32 can better cooperate with the driving gear 23 to achieve the limiting function.

[0046] In an optional implementation, as Figure 2 shown, two lower limit components 30 are arranged on the side of the driving gear 23. The two lower limit components 30 are arranged at intervals along the length direction of the door row 10, that is, a set of lower limit components 30 is provided on each side of the driving assembly 20 along the length direction of the door row 10. In this way, through the joint 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. In other embodiments, the lower limit component 30 can also be set to three, four, or more, and specific limitations are not made here.

[0047] As Figure 1 shown, a plurality of supporting casters 80 are arranged at the bottom of the lower beam 11 along a preset direction. The plurality of supporting casters 80 are used to support the door row 10, enabling the door row 10 to be stably supported on the ground and move along the ground.

[0048] In an optional embodiment, as Figure 2As shown in the figure, the sliding door further includes a support assembly 40. The support assembly 40 is located below the lower beam 11 and can be fixed to the ground. The support assembly 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 preset direction. The support wheel 42 is located in the installation groove 111, and the top of the support wheel 42 is higher than the driving gear 23. When the door panel 10 encounters a relatively deep pit during the moving process, the starting end of the door panel 10 will move downward. Since the top of the support wheel 42 is higher than the driving gear 23, the door panel 10 will abut against the support wheel 42 after moving downward and will not contact the driving gear 23. That is to say, when the door panel 10 moves downward to the limit position, the support wheel 42 will abut against the bottom of the installation groove 111, playing a role in supporting the lower beam 11 and preventing the lower beam 11 from contacting and rubbing against the driving gear 23 to cause abnormal noise or jamming.

[0049] 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 up and down movement of the door panel 10, 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 panel 10 moves up and down, the rack 24 can always mesh with the driving gear 23 for transmission.

[0050] In an alternative embodiment, as Figure 2 shown, the driving component includes a driving motor 21 and a reducer 22. The reducer 22 is connected to the output end of the driving motor 21. The output shaft of the reducer 22 is arranged upward and connected to the driving gear 23. The driving motor 21 drives the output shaft of the 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 panel 10 can move linearly in translation. By adopting the driving mode of the above-mentioned driving motor 21, reducer 22 and gear rack 24, the transmission is more accurate and the transmission efficiency is higher, thereby improving the accuracy of opening and closing the door.

[0051] In an alternative embodiment, the driving motor 21 is a DC24V motor. In the prior art, the driving motor 21 usually uses a 220V AC power supply, which has great safety hazards. Therefore, by changing the driving motor 21 from a 220V AC power supply motor to a DC24V DC motor and using a safe voltage for driving, it is not easy to cause electric shock accidents, eliminating the voltage safety hazards and ensuring the safety during use.

[0052] In an alternative embodiment, as Figure 2As shown, the sliding door further includes a fixed plate 50. The speed reducer 22 of the driving assembly 20, the bracket 41 of the support assembly 40, and the axle 31 of the lower limit assembly 30 are all fixed on the fixed plate 50, and the fixed plate 50 can be directly fixed on the ground. By providing the fixed plate 50, the driving assembly 20, the lower limit assembly 30, and the support assembly 40 can all be integrated on the fixed plate 50, with a high degree of integration, reasonable layout, delicate and compact structure, and saving space occupancy.

[0053] In an alternative embodiment, as Figure 1 shown, the sliding door further includes a driven assembly 70. The driven assembly 70 is arranged at an interval with the driving assembly 20 along the length direction of the door row 10, and the driven assembly 70 is also concealedly arranged in the installation groove 111 of the lower beam 11. Specifically, as Figure 5 shown, the driven assembly 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, is also horizontally arranged and meshes with the rack 24 for transmission, so as to ensure the stable operation of the door row 10.

[0054] In an alternative embodiment, as Figure 5 shown, the above-mentioned lower limit assembly 30 and support assembly 40 are also arranged beside the driven assembly 70. The bottom of the support seat 72 is also provided with a fixed plate 50, and the lower limit assembly 30 and support assembly 40 beside the driven assembly 70 are also integrally integrated on the fixed plate 50 to form an integrated structure. Through the combined 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, resulting in misalignment between the driven gear 71 and the rack 24 and causing movement jamming. By providing a support wheel 42 beside the driven gear 71, it can play a role in supporting the lower beam 11, preventing the lower beam 11 from contacting and rubbing against the driven gear 71, causing abnormal noise or jamming.

[0055] As Figure 1 and Figure 4 shown, the sliding door further includes a main box body 60. The main box body 60 is arranged beside the driving assembly 20. The inside of the main box body 60 is used to accommodate electrical components such as a controller and wiring harness that are electrically connected to the driving assembly 20. The main box body 60 is set in a gantry structure, and the door row 10 passes through between the main box bodies 60. 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 the two 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 movement. Under the combined action of the upper limit wheels 63, the gears and the lower limit wheels 32, the door row 10 can maintain stable linear movement.

[0056] As Figure 4As shown in the figure, the main box body 60 includes two columns 61 and a cross beam 62 connected between the tops of the two columns 61. The door row 10 is located between the two columns 61. 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.

[0057] As Figure 4 shown, a switch limit inductor 64 is provided at the bottom of the column 61. Magnets that are inductively matched with the switch limit inductor 64 are respectively provided at two different positions of the door row 10 in its length direction. By sensing the magnets at the two different positions, the switch limit inductor 64 reaches the two limit positions for the opening and closing of the door row 10.

[0058] As Figure 1 shown, the sliding door further includes a gantry 90. When the door row 10 is completely closed, in the closed state as Figure 1 shown, the door row 10 passes through the gantry 90. The gantry 90 can provide lateral support for the door row 10, so that the door row 10 remains stable when it is closed.

[0059] Furthermore, as Figure 6 shown, limiting members 91 are respectively provided on both sides inside 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 provide lateral support for the door row 10, so that the door row 10 remains stable when it is closed.

[0060] Furthermore, 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. Two alignment 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 alignment wheels 12 and the guiding inclined surface 911, the door row 10 can be aligned, 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-mentioned embodiments of the present invention are only examples for clearly explaining the present invention, and are not limitations on 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 within the protection scope of the claims of the present invention.

Claims

1. A sliding door, characterized in that, Comprising: A door row (10) with a lower beam (11) provided at its bottom, and the lower beam (11) has a first side and a second side oppositely arranged in its width direction; A driving assembly (20), including 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 one of the first side and the second side, and extends along the length direction of the door row (10), and the driving gear (23) meshes with the rack (24); A lower limit component (30), including a vertically arranged wheel shaft (31) and a lower limit wheel (32), the lower limit wheel (32) is rotatably arranged on the wheel shaft (31), and the circumferential surface of the lower limit wheel (32) abuts against the other of the first side and the second side.

2. The sliding door according to claim 1, wherein The lower limit component (30) is arranged adjacent to the driving gear (23).

3. The sliding door according to claim 2, characterized in that, At least two of the lower limit components (30) are arranged beside the driving gear (23), and the at least two lower limit components (30) are arranged at intervals along the length direction of the door row (10).

4. The sliding door according to any one of claims 1-3, characterized in that, An installation groove (111) with an opening facing downwards is provided at the bottom of the lower beam (11), and the two opposite side walls of the installation groove (111) are respectively the first side and the second side. The driving gear (23) and the lower limit wheel (32) are both 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.

5. The sliding door according to any one of claims 1 to 3, characterized in that, The sliding door further includes a fixing plate (50), and both the driving assembly (20) and the lower limit component (30) are fixed on the fixing plate (50).

6. The sliding door according to any one of claims 1 to 3, characterized in that The sliding door further includes a driven assembly (70), the driven assembly (70) is arranged at intervals with the driving assembly (20) along the length direction of the door row (10), the driven assembly (70) includes a driven gear (71) and a support seat (72), the driven gear (71) is rotatably arranged on the support seat (72), and the driven gear (71) meshes with the rack (24) for transmission.

7. The sliding door according to claim 6, characterized in that, The lower limit component (30) is also arranged beside the driven assembly (70).

8. The sliding door according to any one of claims 1 to 3, 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) respectively rollingly cooperate with the two sides of the top of the door row (10).

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