Linear door driving device

Abstract

The utility model relates to the technical field of linear door accessory devices, in particular to a linear door driving device. Comprising a fixed door frame, a linear door body and a servo motor, and walking wheels are arranged at the bottom end of the linear door body; the motor base is installed at the bottom of the fixed door frame, the servo motor is installed at the top end of the motor base, a transmission gear is arranged at the top output end of the servo motor and located on the left side of the linear door body, a rack is arranged at the left end of the linear door body, and the rack is meshed with the transmission gear; even on a bumpy road surface or when a barrier is encountered, effective meshing of the gear and the rack can still be guaranteed, the situation that the linear door body cannot be driven is avoided, the service life of the gear and the rack is prolonged, and the use reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of linear door attachment devices, in particular to a linear door driving device. Background Art

[0002] As we all know, a linear door is a type of sliding door. A traveling wheel is provided at the bottom of the linear door body, which is generally driven by a servo motor, and the gear drives the rack to realize the movement of the linear door body. The existing linear door driving device generally includes a fixed door frame, a linear door body and a servo motor. A traveling wheel and a rack are provided at the bottom of the linear door body. The servo motor is installed at the bottom of the fixed door frame, and a gear is provided at the output end of the servo motor. The gear is meshed with the rack, and the gear is driven to rotate by the servo motor, and the linear door body is driven to move by the cooperation of the gear and the rack. When using this existing driving device, it is found that some ground is bumpy or obstacles appear in the path of the linear door body. When the linear door body moves, the traveling wheel will bump up and down on the bumpy road surface or when encountering obstacles, which will cause the gear to disengage from the rack, resulting in a situation where it cannot be driven, and it is easy to cause wear between the gear and the rack, resulting in low reliability. Utility Model Content

[0003] (1) Technical problems solved

[0004] In response to the shortcomings of the existing technology, the utility model provides a linear door drive device that can ensure effective engagement between the gear and the rack even on bumpy roads or when encountering obstacles, avoiding the situation where the linear door body cannot be driven, extending the service life of the gear and rack, and improving the reliability of use.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a linear door driving device, comprising a fixed door frame, a linear door body and a servo motor, wherein a walking wheel is provided at the bottom end of the linear door body; and further comprising a motor seat, wherein the motor seat is installed at the bottom of the fixed door frame, the servo motor is installed at the top end of the motor seat, and a transmission gear is provided at the top output end of the servo motor, wherein the transmission gear is located on the left side of the linear door body, and a rack is provided at the left end of the linear door body, and the rack is meshed with the transmission gear.

[0007] Preferably, the motor seat includes a fixed seat, a slide groove is provided at the top of the fixed seat, a sliding seat, multiple groups of compression springs and multiple groups of limit rods are provided in the slide groove, the sliding seat is slidably arranged in the slide groove, and multiple groups of left and right through-holes are provided on the sliding seat, one end of the multiple groups of limit rods respectively pass through the multiple groups of compression springs and are fixedly connected to the left side wall of the slide groove, the other ends of the multiple groups of limit rods respectively pass through the multiple groups of through-holes and are fixedly connected to the right side wall of the slide groove, the left ends of the multiple groups of compression springs are all tightly attached to the left side wall of the slide groove, the right ends of the multiple groups of compression springs are all tightly attached to the left end of the sliding seat, and the servo motor is installed at the top of the sliding seat.

[0008] Preferably, a limiting screw is further included, the right end of the fixing seat is provided with a threaded hole communicating with the sliding groove, and the left end of the limiting screw is screwed through the threaded hole and tightly attached to the right end of the sliding seat.

[0009] Preferably, the thickness of the transmission gear is greater than or equal to twice the thickness of the rack.

[0010] Preferably, the fixed door frame is provided with a limiting wheel device for limiting the left and right positions of the linear door body, and the limiting wheel device includes two groups of left limiting wheels and two groups of right limiting wheels. The two groups of left limiting wheels are both tightly attached to the left end of the linear door body, and the two groups of right limiting wheels are both tightly attached to the right end of the linear door body.

[0011] (3) Beneficial effects

[0012] Compared with the prior art, the utility model provides a linear door drive device with the following beneficial effects: the linear door drive device installs a rack on the left side of the linear door body, and the servo motor drives the transmission gear to rotate, and the transmission gear drives the rack to realize the movement of the linear door body. Even on bumpy roads or when encountering obstacles, when the linear door body is slightly lifted or dropped, the gear and the rack can still be effectively engaged, avoiding the situation where the linear door body cannot be driven, avoiding the rigid extrusion of the rack and the gear, extending the service life of the gear rack, and improving the reliability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0014] Figure 2 It is a left-side structural schematic diagram of the present utility model;

[0015] Figure 3 This is a front view structural diagram of the present utility model;

[0016] Figure 4 This is a three-dimensional structural diagram of the servo motor and motor base of the utility model;

[0017] Markings in the attached figure: 1. Fixed door frame; 2. Linear door body; 3. Servo motor; 4. Travel wheel; 5. Motor seat; 6. Transmission gear; 7. Rack; 8. Fixed seat; 9. Slide groove; 10. Sliding seat; 11. Compression spring; 12. Limit rod; 13. Limit screw; 14. Left limit wheel; 15. Right limit wheel. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-4 The utility model is a linear door driving device, comprising a fixed door frame 1, a linear door body 2 and a servo motor 3. A walking wheel 4 is provided at the bottom end of the linear door body 2; it also comprises a motor seat 5, the motor seat 5 is mounted on the bottom of the fixed door frame 1, the servo motor 3 is mounted on the top of the motor seat 5, and a transmission gear 6 is provided at the top output end of the servo motor 3, the transmission gear 6 is located on the left side of the linear door body 2, and a rack 7 is provided at the left end of the linear door body 2, the rack 7 is meshed with the transmission gear 6, and a movable gap is left between the teeth of the rack 7 and the transmission gear 6, so that the rack 7 and the transmission gear 6 are effectively meshed when the rack 7 is tilted; by The rack 7 is installed on the left side of the linear door body 2, and the servo motor 3 drives the transmission gear 6 to rotate, and the transmission gear 6 drives the rack 7 to realize the movement of the linear door body 2. Even on bumpy roads or when encountering obstacles, when the linear door body 2 is slightly lifted or dropped, the gear and rack 7 can still be effectively engaged, avoiding the situation where the linear door body 2 cannot be driven, avoiding the rigid extrusion of the rack 7 and the gear, extending the service life of the gear rack 7, and improving the reliability of use; the thickness of the transmission gear 6 is greater than or equal to twice the thickness of the rack 7, and when the linear door body 2 tilts up and down, it is ensured that the transmission gear 6 can maintain engagement with the rack 7.

[0020] The motor seat 5 includes a fixed seat 8, a slide groove 9 is provided at the top of the fixed seat 8, a sliding seat 10, multiple groups of compression springs 11 and multiple groups of limiting rods 12 are provided in the slide groove 9, the sliding seat 10 is slidably provided in the slide groove 9, and multiple groups of left and right through-holes are provided on the sliding seat 10, one end of the multiple groups of limiting rods 12 respectively passes through the multiple groups of compression springs 11 and is fixedly connected to the left side wall of the slide groove 9, the other end of the multiple groups of limiting rods 12 respectively passes through the multiple groups of through-holes and is fixedly connected to the right side wall of the slide groove 9, the left ends of the multiple groups of compression springs 11 are all tightly attached to the left side wall of the slide groove 9, and the multiple groups of compression springs 11 are fixedly connected to the left side wall of the slide groove 9. The right end of the spring 11 is tightly attached to the left end of the sliding seat 10, and the servo motor 3 is installed on the top of the sliding seat 10; it also includes a limit screw 13, and the right end of the fixed seat 8 is provided with a threaded hole connected to the sliding groove, and the left end of the limit screw 13 is screwed through the threaded hole and tightly attached to the right end of the sliding seat 10; when the linear door body 2 shakes left and right during movement, the sliding seat 10 is squeezed by the compression spring 11, so that the sliding seat 10 slides left and right in the sliding groove 9, ensuring that the transmission gear 6 is always tightly engaged with the rack 7, and the right end limit position of the sliding seat 10 is adjusted by the limit screw 13.

[0021] The fixed door frame 1 is provided with a limiting wheel device for limiting the left and right positions of the linear door body 2. The limiting wheel device includes two groups of left limiting wheels 14 and two groups of right limiting wheels 15. The two groups of left limiting wheels 14 are both tightly attached to the left end of the linear door body 2, and the two groups of right limiting wheels 15 are both tightly attached to the right end of the linear door body 2. The left limiting wheel 14 and the right limiting wheel 15 are used to limit the left and right sides of the linear door body 2 to ensure the stability of the linear door body 2 during movement.

[0022] When in use, the servo motor 3 drives the transmission gear 6 to rotate, and the rack 7 and the linear door body 2 are driven to move through the cooperation of the transmission gear 6 and the rack 7. The rack 7 is installed on the left side of the linear door body 2, and the servo motor 3 drives the transmission gear 6 to rotate, and the transmission gear 6 drives the rack 7 to realize the movement of the linear door body 2. Even on bumpy roads or when encountering obstacles, when the linear door body 2 is slightly lifted or dropped, it can still ensure that the gear and rack 7 are effectively engaged, avoiding the situation where the linear door body 2 cannot be driven, avoiding the rigid squeezing of the rack 7 and the gear, extending the service life of the gear rack 7, and improving the reliability of use. When the linear door body 2 shakes left and right during movement, the sliding seat 10 is squeezed by the compression spring 11, so that the sliding seat 10 slides left and right in the slide groove 9, ensuring that the transmission gear 6 is always tightly engaged with the rack 7.

[0023] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0024] The electrical components mentioned in this article are all connected to an external main controller and 220V AC power, and the main controller can be a conventional known device that performs control such as a computer.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A linear door driving device, comprising a fixed door frame (1), a linear door body (2) and a servo motor (3), wherein a running wheel (4) is provided at the bottom end of the linear door body (2); characterized in that: The invention also includes a motor base (5), wherein the motor base (5) is installed at the bottom of the fixed door frame (1), the servo motor (3) is installed at the top of the motor base (5), and a transmission gear (6) is provided at the top output end of the servo motor (3), the transmission gear (6) is located on the left side of the linear door body (2), and a rack (7) is provided at the left end of the linear door body (2), and the rack (7) is engaged with the transmission gear (6).

2. A linear door driving device according to claim 1, characterized in that: The motor seat (5) includes a fixed seat (8), a slide groove (9) is provided at the top of the fixed seat (8), a sliding seat (10), multiple groups of compression springs (11) and multiple groups of limiting rods (12) are provided in the slide groove (9), the sliding seat (10) is slidably provided in the slide groove (9), and multiple groups of left and right through-holes are provided on the sliding seat (10), one end of the multiple groups of limiting rods (12) respectively passes through the multiple groups of compression springs (11) and is fixedly connected to the left side wall of the slide groove (9), the other end of the multiple groups of limiting rods (12) respectively passes through the multiple groups of through-holes and is fixedly connected to the right side wall of the slide groove (9), the left ends of the multiple groups of compression springs (11) are all in close contact with the left side wall of the slide groove (9), and the right ends of the multiple groups of compression springs (11) are all in close contact with the left end of the sliding seat (10), and the servo motor (3) is installed on the top of the sliding seat (10).

3. A linear door driving device according to claim 2, characterized in that: It also includes a limiting screw (13), the right end of the fixed seat (8) is provided with a threaded hole communicating with the sliding groove, and the left end of the limiting screw (13) is screwed through the threaded hole and tightly attached to the right end of the sliding seat (10).

4. A linear door driving device according to claim 3, characterized in that: The thickness of the transmission gear (6) is greater than or equal to twice the thickness of the rack (7).

5. A linear door driving device according to claim 4, characterized in that: The fixed door frame (1) is provided with a limiting wheel device for limiting the left and right positions of the linear door body (2), and the limiting wheel device comprises two groups of left limiting wheels (14) and two groups of right limiting wheels (15). The two groups of left limiting wheels (14) are both tightly attached to the left end of the linear door body (2), and the two groups of right limiting wheels (15) are both tightly attached to the right end of the linear door body (2).

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