A retractable door barrier

Abstract

This utility model discloses a retractable gate, comprising two parallel gate panels, a first gate panel and a second gate panel. A rack is installed in the middle of the first gate panel, and a drive gear is rotatably connected to the second gate panel, meshing with the rack. A knob is rotatably embedded on the outer side of the second gate panel, and a rotating shaft is connected to the knob via a spline. The rotating shaft is fixedly connected to the drive gear. A fixing tooth is fixedly installed on the end face of the second gate panel, and the knob is covered on the fixing tooth. The inner wall of the knob has a fixing groove that can engage and limit the rotation of the fixing tooth circumferentially. The knob can slide inward and outward along the axis of the rotating shaft. This utility model uses the direct rotation of the knob to drive the rack and gear, achieving relative sliding of the gate panels. Furthermore, the fixing tooth on the gate panel where the knob is installed allows for locking and unlocking the knob's rotational movement through external pulling and internal pressure, making it more convenient and stable than a ratchet mechanism.

Description

Technical Field

[0001] This utility model relates to the field of gate technology, specifically a retractable gate. Background Technology

[0002] Doorway structures are typically used in narrow spaces such as passageways or doorways to restrict the movement of pets or infants. They can also be installed on pet cages.

[0003] The published Chinese utility model patent CN222649910U discloses a retractable door stop. The two door stops are driven by a gear and rack structure, and the gear is driven to rotate by a paddle and a ratchet mechanism. In addition, the ratchet mechanism itself is used to achieve self-locking.

[0004] The structure of this patent is relatively complex, and there is a certain sense of jerkiness in actual implementation. In addition, due to the multiple gear and ratchet assembly structures, the stability is insufficient, and it is prone to jamming after long-term use. Utility Model Content

[0005] The purpose of this invention is to provide a retractable gate to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a retractable gate, comprising two parallel-installed first gate and second gate, wherein a rack is installed in the middle of the first gate, and a drive gear is rotatably connected to the second gate, the drive gear meshing with the rack;

[0007] A knob is rotatably embedded on the outer side of the second gate. The inside of the knob is connected to a rotating shaft via a spline. The rotating shaft is fixedly connected to a drive gear. The circumferential rotation of the knob causes the drive gear to rotate under the transmission of the spline. The drive gear drives the first gate to slide along its meshing rack.

[0008] A fixing tooth is fixedly installed on the end face of the second gate, the knob is covered on the fixing tooth, and the inner wall of the knob is provided with a fixing groove that can engage and limit the fixing tooth circumferentially.

[0009] The knob can slide inward and outward along the axis of rotation. When it slides inward to its limit, the fixed groove engages with the fixed teeth, locking the circumferential rotation of the knob. When it slides outward to its limit, the fixed groove and fixed teeth disengage.

[0010] Preferably, the spline connection structure between the knob and the shaft includes an extension claw disposed inside the knob, a barb structure disposed on the inner side wall of the extension claw, and a snap-fit ​​groove (91) opened on the peripheral wall of the shaft. The barb structure of the extension claw is accommodated in the snap-fit ​​groove, so that the extension claw can slide in the extension direction of the snap-fit ​​groove. When the barb structure abuts against the upper and lower groove walls of the snap-fit ​​groove, it is stopped by a limiting position.

[0011] Preferably, a groove parallel to the rack is provided on the first gate frame below the rack, and the part of the rotating shaft extending beyond the drive gear is accommodated in the groove and slidably connected to the groove.

[0012] Preferably, a limiting sleeve is fitted onto the portion of the rotating shaft that extends beyond the drive gear. The limiting sleeve is located outside the slide groove, and the maximum diameter of the limiting sleeve is greater than the width of the slide groove.

[0013] Preferably, the outer wall of the knob is treated with an anti-slip coating to facilitate manual rotation.

[0014] Preferably, the fixed teeth are annular gear structures, and the inner sidewall of the knob is provided with annular gear grooves as fixed grooves for meshing.

[0015] Preferably, the second door frame has an inner ring and an outer ring at the position for installing the knob, the knob is located in the area between the inner ring and the outer ring, and the fixing teeth are fixed on the inner ring.

[0016] Preferably, a knob pressing block is fixedly sleeved on the outer ring. The upper edge of the knob pressing block is bent inward, and a protruding stepped surface is provided on the lower outer wall of the knob. When the knob is pulled outward to the limit position, the stepped surface is limited and blocked by the upper edge of the knob pressing block.

[0017] Preferably, an L-shaped limiting groove is provided on the outer circumferential surface of the outer ring. The limiting groove includes an open groove and a stepped groove. A protruding limiting block is provided on the inner wall of the knob pressing block. During installation, the limiting block is pressed into the bottom from the open groove. After rotation, the limiting block is accommodated in the stepped groove, and the outward displacement of the knob pressing block is limited by the stepped groove.

[0018] Preferably, the first gate frame is provided with buckles at both the top and bottom of the outer end face facing the second gate frame, and the second gate frame is provided with slide rails at both the top and bottom of the outer end face. The buckles are engaged in the slide rails and are slidably connected with the extension direction of the slide rails.

[0019] Compared with the prior art, the beneficial effects of this utility model are: this utility model uses a knob to directly rotate and drive the gear rack to achieve relative sliding of the gate. Furthermore, a fixed tooth is set on the gate where the knob is installed, and the rotational movement of the knob is locked and unlocked by external pulling and internal pressing, which is more convenient and stable than a ratchet mechanism. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the knob mounting structure;

[0023] Figure 4 This is a schematic diagram of the knob pressure block installation structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the rotating shaft structure;

[0025] Figure 6 This is a schematic diagram of the two gates of this utility model in their fully retracted state. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1-5 As shown, this utility model provides a technical solution: a retractable gate, including two parallel-installed first gate 1 and second gate 2, a rack 11 installed in the middle of the first gate 1, and a drive gear 7 rotatably connected to the second gate 2, the drive gear meshing with the rack 11.

[0028] Reference Figure 2 As shown, a groove 12 parallel to the rack 11 is provided on the first gate 1 below the rack 11. The portion of the rotating shaft 9 extending beyond the drive gear 7 is accommodated in the groove 12 and slidably connected to the groove 12. A limiting sleeve 8 is fitted onto the portion of the rotating shaft 9 extending beyond the drive gear 7. The limiting sleeve 8 is located outside the groove 12, and the maximum diameter of the limiting sleeve 8 is greater than the width of the groove 12, used for limiting and preventing the gear from disengaging from the rack.

[0029] A knob 6 is rotatably embedded on the outer side of the second gate 2. The inside of the knob 6 is connected to a rotating shaft 9 via a spline. The rotating shaft 9 is fixedly connected to the drive gear 7. The spline connection structure between the knob 6 and the rotating shaft 9 includes an extension claw 61 disposed inside the knob 6. The inner side wall of the extension claw 61 is provided with a barb structure, and a locking groove 91 is opened on the peripheral wall of the rotating shaft 9. The barb structure of the extension claw 61 is accommodated in the locking groove 91, so that the extension claw 61 can slide in the extension direction of the locking groove 91. When the barb structure abuts against the upper and lower groove walls of the locking groove 61, it is stopped by a limiting position.

[0030] A fixing tooth 21 is fixedly installed on the end face of the second gate 2. The knob 6 is covered on the fixing tooth 21, and the inner wall of the knob 6 is provided with a fixing groove that can engage and limit the fixing tooth 21 circumferentially.

[0031] The fixed tooth 21 is a ring-shaped gear structure, and the inner wall of the knob 6 is provided with a ring-shaped gear groove as a fixed groove for meshing.

[0032] The outer wall of knob 6 has an anti-slip treatment, making it easy to rotate manually.

[0033] The knob 6 can slide inward and outward along the axis of the rotating shaft 9. When it slides inward to the limit, the fixing groove engages with the fixing teeth, and the circumferential rotation of the knob 6 is locked. When it slides outward to the limit, the fixing groove of the knob 6 disengages from the fixing teeth, and the circumferential rotation of the knob 6 is unlocked.

[0034] Continue to refer to Figure 3 as well as Figure 4 As shown, the second gate 2 has an inner ring and an outer ring 22 at the position for installing the knob 6. The knob 6 is located in the area between the inner ring and the outer ring 22, and the fixing teeth 21 are fixed on the inner ring. A knob pressing block 5 is fixedly sleeved on the outer ring 22. The upper edge of the knob pressing block 5 is bent inward. The lower outer wall of the knob 6 has a protruding stepped surface. When the knob 6 is pulled outward to its limit position, the stepped surface is stopped by the upper edge of the knob pressing block 5. An L-shaped limiting groove 24 is provided on the outer circumference of the outer ring 22. The limiting groove 24 includes an opening groove 23 and a stepped groove 25. The inner wall of the knob pressing block 5 has a protruding limiting block 51. During installation, the limiting block 51 is pressed into the opening groove 23. After rotation, the limiting block 51 is accommodated in the stepped groove 25, and the outward displacement of the knob pressing block 5 is limited by the stepped groove 25.

[0035] Although the knob is limited by the locking groove 91 on the pivot 9 when pulled outward, the extension claw 6 has a certain degree of elasticity. Especially when used in pet enclosures, the forceful impact and vibration from a pet could cause the knob 6 to detach from the pivot. The knob retainer 5, as a redundant design, provides an external safety layer to prevent the knob from falling off. The limiting range of the knob retainer 5 should match the limiting range of the locking groove 91.

[0036] Continue to refer to Figure 1 As shown, buckles 4 are provided at the top and bottom of the outer end face of the first gate 1 facing the second gate 2, and slide rails are provided at the top and bottom of the outer end face of the second gate 2. The buckles (4) are engaged in the slide rails and are slidably connected with the extension direction of the slide rails. The buckles 4 and the slide rails serve as guides. In addition, soft rubber pads 3 are provided on the outermost sides of the two gates for cushioning.

[0037] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A retractable door barrier, characterised in that: It includes two parallel door panels, a first door panel (1) and a second door panel (2). A rack (11) is installed in the middle of the first door panel (1), and a drive gear (7) is rotatably connected to the second door panel (2). The drive gear (7) meshes with the rack (11). A knob (6) is rotatably embedded on the outer side of the second gate (2). The inside of the knob (6) is connected to a rotating shaft (9) via a spline. The rotating shaft (9) is fixedly connected to the drive gear (7). The rotation of the knob (6) in the circumferential direction causes the drive gear (7) to rotate under the transmission of the spline. The drive gear (7) drives the first gate (1) to slide along its meshing rack (11). A fixing tooth (21) is fixedly installed on the end face of the second gate (2), and a knob (6) is covered on the fixing tooth (21). The inner wall of the knob (6) is provided with a fixing groove that can engage and limit the fixing tooth (21) circumferentially. The knob (6) can slide inward and outward along the axis of the rotating shaft (9). When it slides inward to the limit, the fixing groove engages with the fixing tooth (21), and the circumferential rotation of the knob (6) is locked. When it slides outward to the limit, the fixing groove of the knob (6) disengages from the fixing tooth (21).

2. The retractable gate according to claim 1, characterized in that: The spline connection structure between the knob (6) and the shaft (9) includes an extension claw (61) disposed inside the knob (6), a barb structure provided on the inner side wall of the extension claw (61), and a snap-fit ​​groove (91) opened on the peripheral wall of the shaft (9). The barb structure of the extension claw (61) is accommodated in the snap-fit ​​groove (91), so that the extension claw (61) can slide in the extension direction of the snap-fit ​​groove (91). When the barb structure abuts against the upper and lower groove walls of the snap-fit ​​groove (61), it is stopped by a limiting position.

3. The retractable gate according to claim 1, characterized in that: The first gate (1) has a slide groove (12) parallel to the rack (11) located below it. The part of the rotating shaft (9) extending out of the drive gear (7) is accommodated in the slide groove (12) and is slidably connected to the slide groove (12).

4. A retractable gate according to claim 3, characterized in that: The portion of the rotating shaft (9) extending beyond the drive gear (7) is fitted with a limiting sleeve (8). The limiting sleeve (8) is located outside the slide groove (12), and the maximum outer diameter of the limiting sleeve (8) is greater than the width of the slide groove (12).

5. A retractable gate according to claim 1, characterized in that: The outer side of the knob (6) is treated with anti-slip material to facilitate manual rotation.

6. A retractable gate according to claim 1, characterized in that: The fixed tooth (21) is a ring-shaped gear structure, and the inner wall of the knob (6) is provided with a ring-shaped gear groove as a fixed groove for meshing.

7. A retractable gate according to claim 6, characterized in that: The second gate (2) has an inner ring and an outer ring (22) at the position for installing the knob (6). The knob (6) is located in the area between the inner ring and the outer ring (22), and the fixing tooth (21) is fixed on the inner ring.

8. A retractable gate according to claim 7, characterized in that: A knob pressing block (5) is fixedly sleeved on the outer ring (22). The upper edge of the knob pressing block (5) is bent inward. A protruding step surface is provided on the lower outer wall of the knob (6). When the knob (6) is pulled outward to the limit position, the step surface is limited and blocked by the upper edge of the knob pressing block (5).

9. A retractable gate according to claim 8, characterized in that: An L-shaped limiting groove (24) is provided on the outer circumferential surface of the outer ring (22). The limiting groove (24) includes an open groove (23) and a stepped groove (25). A protruding limiting block (51) is provided on the inner wall of the knob pressing block (5). During installation, the limiting block (51) is pressed into the bottom from the open groove (23). After rotation, the limiting block (51) is accommodated in the stepped groove (25). The outward displacement of the knob pressing block (5) is limited by the stepped groove (25).

10. A retractable gate according to claim 1, characterized in that: The first gate (1) has buckles (4) at the top and bottom of the outer end face facing the second gate. The second gate (2) has slides at the top and bottom of the outer end face. The buckles (4) are engaged in the slides and are slidably connected with the extension direction of the slides.

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