Roller blind for a baby gate

Abstract

The utility model discloses a kind of roll screen type infant gate, the roll screen upper seat of this product includes base shell, shell cover, concave cavity;Third through-hole is opened in the concave cavity rear bottom of base shell and is worn with axle pipe rotation control column;The outer wall of axle pipe rotation control column extends with convex ring, upper section outer wall extends with ring tooth level;The bottom wall of concave cavity has locking member connection convex column and is connected with tooth level locking member movably, third return spring is pressed between tooth level locking member and the lateral wall of concave cavity, ring tooth level and tooth level locking member are connected with gear connection;The rear top of shell cover is opened with button hole, and the middle ring extends with convex wall ring;Knob passes through button hole, knob is limited and prevented from falling by convex wall ring, the top section of knob is exposed in the outer top of shell cover, convex wall ring and lower section are arranged on the reverse of shell cover, the lower section of knob is movably connected with tooth level locking member, for unlocking tooth level locking member;Adult unlocking is easy for this product, reset locking is automatic, for small children, it is not easy to operate unlocking to open gate, and it is high in use safety.

Description

Technical Field

[0001] This utility model relates to infant and toddler fence products, and more particularly to a roller shutter type infant and toddler gate. Background Technology

[0002] 1. Chinese Patent Publication No. CN222162254U discloses a double-locking lock head and a telescopic gate with the same. The double-locking lock head includes a housing (1), on which a connector (11) for connection with a roller assembly is pivotally mounted. A first locking mechanism is also provided to lock the connector (11). A first knob (12) and a second knob (13) are movably mounted on the housing (1). The first knob (12) is linked with the first locking mechanism. The first knob (12) can drive the first lock relative to the housing (1). The locking mechanism moves the connector (11) between locked and unlocked positions; the first locking mechanism includes a first ratchet (21) pivotally mounted inside the housing (1) for connection with the connector (11) and a first pawl (22) pivotally mounted on one side of the first ratchet (21), the first pawl (22) swinging between a position engaged with the first ratchet (21) and a position disengaged from it, and a first top spring (23) is provided, the first top spring (23) for applying a spring force to the first pawl (22) to swing in the direction of engagement with the first ratchet (21). The lower end of the first dial (12) extends into the housing (1). The first pawl (22) is formed with a first push part (24) for contacting the lower end of the first dial (12). During the movement of the first dial (12) in the direction of unlocking the connector (11), the lower end of the first dial (12) can contact the first push part (24) and force the first pawl (22) to swing away from the first ratchet (21) to unlock the first ratchet (21). The first locking mechanism further includes a second ratchet (25) fixed to the top of the first ratchet (21) and a second pawl (26) pivotally mounted on one side of the second ratchet (25). The direction of the teeth of the second ratchet (25) is opposite to the direction of the teeth of the first ratchet (21). The second pawl (26) can swing between a position engaged with the second ratchet (25) and a position away from it. A second top spring (27) is provided to apply a spring force to the second pawl (26) to swing in the direction of engagement with the second ratchet (25). The second pawl (26) is formed with a second push part (28) for contacting the lower end of the first dial (12). During the movement of the first dial (12) in the direction of unlocking the connector (11), the lower end of the first dial (12) can contact the second push part (28) and force the second pawl (26) to swing away from the second ratchet (25) to unlock the second ratchet (25). The first ratchet (21) and the second ratchet (25) are either integrally formed or detachably connected. When they are detachably connected, the second ratchet (25) is fixed to the top of the first ratchet (21) by screw locking, snap-fit ​​structure, or adhesive bonding. The lower end of the first dial (12) is connected to an unlocking button (29) for contacting the first push part (24) and the second push part (28).The housing (1) has a first base (31) with a first guide hole (32) fixedly installed inside. The first dial (12) is movably installed on the first base (31) and can move back and forth in a straight line along the first guide hole (32). The bottom of the first dial (12) is provided with a connecting post that can pass vertically through the first guide hole (32). The end of the connecting post away from the first dial (12) is fixedly connected to the unlocking key (29).

[0003] The first locking mechanism of the above structure works with the first dial (12) and the second dial (13) to lock and unlock. The structure of the first locking mechanism is too complicated, the production cost is high, the assembly efficiency between the parts is low, and it is troublesome for adults to lock and unlock, and it is not easy to use.

[0004] 2. Chinese Patent Publication No. CN217269893U discloses a telescopic protective gate, comprising a telescopic curtain assembly, a roller assembly, an upper fixed seat, and a lower fixed seat. The upper and lower fixed seats are respectively assembled at the upper and lower ends of the roller assembly. The tail end of the telescopic curtain assembly is connected to the roller assembly and can be rolled up by the roller assembly. A locking mechanism is provided in the upper fixed seat, and the roller assembly is connected to the locking mechanism. The key feature is that a gear bearing assembly is installed in the upper fixed seat, and the gear bearing assembly is assembled with the roller assembly to form a structure that can rotate with the roller assembly. The locking mechanism is engaged with the gear bearing assembly, and the locking mechanism locks the gear bearing assembly in place. The gear locks the spool assembly. The locking mechanism includes a locking block, a locking seat, and a locking arm. The locking block is mounted in the upper fixed seat by a spring and connected to a pushable button. The locking seat is movably positioned between the locking block and the locking arm and engages with both. The button is located on the upper fixed seat. The locking seat has a pressing post extending from the bottom surface of the upper fixed seat, and the locking seat engages with the locking arm. The side of the locking arm opposite to the gear has locking teeth. Pushing the button releases the locking block from locking the locking seat, causing the locking teeth to engage with the gear and lock the gear bearing assembly. Pressing the pressing post upwards causes the locking seat to push the locking arm to rotate, thereby releasing the lock on the gear bearing assembly.

[0005] The aforementioned telescopic protective gate uses a pushable button, a pressing post, and corresponding lock block, lock seat, locking arm, locking teeth, and gears to lock and unlock. The button and pressing post are set separately, requiring adults to perform two operations to lock and unlock. The locking and unlocking components do not work well together, making it cumbersome and inconvenient for adults to lock and unlock. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a roller shutter-type infant door that is reasonably designed, easy for users to detach and assemble, and has a locking function to prevent infants from unlocking it and ensure safe use.

[0007] The solution to the above technical problem is as follows:

[0008] A roller shutter-type infant door gate includes a roller shutter upper seat and a roller locking and unlocking device. The roller shutter upper seat includes a base shell and a shell cover, which are fixedly connected. A recess is formed in the top of the base shell. A roller locking and unlocking device is provided between the base shell and the shell cover. The roller locking and unlocking device includes a shaft rotation control column, a circumferential toothed stage, a toothed locking element, a third return spring, a locking element connecting protrusion, a fourth return spring, and a knob. A third through hole is formed at the bottom rear of the recess in the base shell. A protruding ring extends from the middle outer wall of the shaft rotation control column. The size of the protruding ring is larger than the third through hole. The shaft rotation control column is movably inserted into the third through hole. Its protruding ring and upper section are arranged in the recess, and its lower section protrudes below the third through hole. The upper section of the shaft rotation control column extends integrally. The device features a circular ring-shaped toothed stage, with the toothed stage positioned above a convex ring. A locking member connecting protrusion extends from the bottom wall of the concave cavity. The toothed locking member movably passes through the locking member connecting protrusion. A third return spring presses against the outer wall of the toothed locking member and the side wall of the concave cavity. The circumferential toothed stage and the toothed locking member are meshed. A fourth return spring connects the top of the shaft tube rotation control column to the bottom of the knob. A through-hole is provided at the rear of the cover. A convex wall ring extends circumferentially from the center of the knob, its size being larger than the through-hole. The knob passes through the through-hole and is prevented from detaching by the convex wall ring. The top section of the knob protrudes from the outer top of the cover, while the convex wall ring and lower section are located on the reverse side of the cover. The lower section of the knob is movably connected to the toothed locking member for unlocking it.

[0009] The beneficial effects of this utility model of a roller shutter-type infant door gate are as follows: 1. The roller locking and unlocking device of this product is easy for adults to unlock and automatically re-locks, making it easy for adults to operate and use. It is not easy for young children / infants who can crawl or walk to operate and unlock the gate, thus ensuring high safety. The roller locking and unlocking device has a simpler structure, lower production costs, and higher assembly efficiency between components. 2. The circumferential elastic rotating roller device facilitates the extension, fixing, and retraction of the roller blind. The components have good fit, are flexible in use, have strong torque, and automatically retract tightly without looseness. 3. The seat locking and unlocking device works with the upper left door frame seat and the lower left door frame seat to complete locking and unlocking. This structure is secure after locking, and easy for adults to unlock; it can be locked immediately by inserting and unlocked immediately by pressing. The lower vertical bar is located at the bottom of the base shell, which is relatively concealed and will not be accessible to young children / infants, ensuring good safety. 4. The roller blind fixing rod is inserted into the lower right recess and the upper right recess for connection. After the roller blind fabric is tightened and fixed, the roller blind fixing rod is hooked and locked. The roller blind fixing rod will not come off up or down, nor will it come off from the front. The lock is firm and stable. After the roller blind fabric is loosened, the roller blind fixing rod needs to be moved to the right. Only then can the roller blind fixing rod be disassembled from the front of the lower right recess and the upper right recess. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the product installed on a door frame with the roller blind in the retracted state.

[0011] Figure 2 This is a diagram showing the product installed on a door frame, with the roller blind in its open and closed state.

[0012] Figure 3 This is a 3D view of the product's infant door opening.

[0013] Figure 4 , Figure 5 This is a 3D view of the infant door frame of this product in its unfolded state, where the upper right door frame base, lower right door frame base, and roller shutter fixing rod are in a separate state;

[0014] Figure 6 This is a 3D view of the upper left door frame base of this product;

[0015] Figure 7 This is a 3D view of the lower left door frame base of this product;

[0016] Figure 8 , Figure 9 This is a perspective view of the upper left and lower left door frame seats of this product installed on the flexible unwinding and rewinding device.

[0017] Figure 10 , Figure 11 This is a perspective view of the elastic unwinding and rewinding device of this product in the split state of the upper left door frame seat and the lower left door frame seat;

[0018] Figure 12 This is a perspective view of the circumferentially elastic rotating curtain roller device of this product in the disassembled state of the roller tube;

[0019] Figure 13 , Figure 14 This is a perspective view of the circumferential elastic rotating curtain roller device in the disassembled state of the roller tube, core column top piece, long coil spring, and bottom ring of the roller;

[0020] Figure 15 , Figure 16 , Figure 17 This is an exploded view of the product's base shell and cover in the open state;

[0021] Figure 18 This is an exploded view of the product's base shell, cover, and knob in the open position.

[0022] Figures 19 to 23 This is an exploded view showing the product's base shell, cover, scroll locking / unlocking device, and seat locking / unlocking device in their open states.

[0023] 1. Flexible unwinding and rewinding device; 11. Upper roller shutter seat; 11A. Base shell; 11B. Shell cover; 11B1. Button hole; 11B2. Unlocking positioning notch; 11B3. Upper locking notch; 11B4. Lower recess; 11C. Cavity; 11D. Third through hole; 11E. Upper seat recess; 12. Seat body connecting vertical rod; 13. Lower roller shutter seat; 131. Insert plate hole; 132. Lower seat recess; 14. Roller shutter base; 15. Circumferentially flexible rotating curtain shaft device. 1. Bottom ring groove 151, spring core column 152, core column top piece 153, long coil spring 154, shaft bottom ring 155, roller tube 156, shaft top connector 157, roller blind fabric 2, hand grip hole 21, roller blind fixing vertical rod 3, upper rod head 31, left door frame seat device 4, left upper door frame seat 41, upper slot 411, left lower door frame seat 42, hook plate 421, lower slot 422, seat locking and unlocking device 5, vertical hook 51, hook opening 5 11. Unlocking vertical component 52, lower vertical rod 521, upper spring pressing component 522, first ramp 5221, first through hole 53, first return spring 54, unlocking horizontal component 55, second ramp 551, locking protrusion 552, horizontal component groove 56, second return spring 57, second through hole 58, scroll locking and unlocking device 6, shaft tube rotation control column 60, convex ring 601, rotating column positioning hole 602, circumferential toothed stage 61, toothed lock Stop 62, locking stage 621, third return spring 63, locking component connecting protrusion 64, fourth return spring 65, knob 66, hand plate 660, convex wall ring 661, rotating column 662, unlocking protrusion 663, ring top positioning protrusion 664, right side door frame seat device 7, upper right door frame seat 71, upper right recess 711, upper right hook notch 712, lower right door frame seat 72, lower right recess 721, curtain seam 722. Detailed Implementation

[0024] like Figures 1 to 23 As shown:

[0025] A roller shutter-type infant gate is installed on the left and right sides of a door frame to restrict the entry and exit of infants and toddlers. It includes a roller shutter upper seat 11 and a roller locking / unlocking device 6. The roller shutter upper seat 11 includes a base shell 11A and a cover 11B, both made of plastic and fixedly connected by screws. A recessed cavity 11C is integrally formed with the base shell 11A at its top. The roller locking / unlocking device 6 is located between the base shell 11A and the cover 11B. The main technical improvement of this product is:

[0026] The spool locking and unlocking device 6 includes a spool tube rotation control column 60, a circumferential toothed stage 61, a toothed stage locking member 62, a third return spring 63, a locking member connecting protrusion 64, and a knob 66.

[0027] The base shell 11A has a third through hole 11D at the bottom of the cavity 11C. The outer wall of the middle part of the shaft tube rotation control column 60 has a convex ring 61. The size of the convex ring 61 is larger than the third through hole 11D. The shaft tube rotation control column 60 is movably connected to the third through hole 11D. The convex ring 61 and its upper section are arranged in the cavity 11C, and the lower section protrudes below the third through hole 11D. The convex ring 61 prevents the shaft tube rotation control column 60 from falling out of the third through hole 11D.

[0028] The shaft tube rotation control post 60 is made of plastic; the upper outer wall of the shaft tube rotation control post 60 is integrally formed with a circular circumferential toothed stage 61, which is located above the convex ring 61; the bottom wall of the cavity 11C extends and protrudes with a locking member connecting protrusion 64, and the toothed locking member 62 is movably connected to the locking member connecting protrusion 64. A post hole is opened at the root of the toothed locking member 62, and the locking member connecting protrusion 64 is inserted into the post hole to form a movable connection. The toothed locking member 62 can rotate circumferentially relative to the locking member connecting protrusion 64. A third return spring 63 is pressed between the outer wall of the toothed locking member 62 and the side wall of the cavity 11C. The circumferential toothed stage 61 and the toothed locking member 62 are meshed. Under normal conditions... Using the rebound force of the third return spring 63, the toothed locking member 62 is always engaged with the circumferential toothed stage 61; the circumferential toothed stage 61 and the toothed locking member 62 are in an engaged connection and locked state; a through-hole 11B1 is provided at the rear top of the cover 11B; a convex wall ring 661 extends circumferentially from the middle of the knob 66, and the size of the convex wall ring 661 is larger than the through-hole 11B1; the knob 66 ​​passes through the through-hole 11B1, and the knob 66 ​​is limited and prevented from detaching by the convex wall ring 661. The top section of the knob 66 ​​is exposed on the outer top of the cover 11B, and the convex wall ring 661 and the lower section are arranged on the reverse side of the cover 11B. The lower section of the knob 66 ​​is movably connected to the toothed locking member 62 for unlocking the toothed locking member 62.

[0029] A person holds the knob 66 ​​at the top and then twists the knob 66 ​​to rotate it. This causes the lower outer wall of the knob 66 ​​to eccentrically push open the toothed locking member 62. The toothed locking member 62 disengages from the circumferential toothed stage 61 and is no longer engaged, thus unlocking the device. The shaft tube rotation control column 60 can then rotate. When the knob 66 ​​is twisted in the opposite direction, the lower outer wall of the knob 66 ​​returns to its low position and no longer presses against the toothed locking member 62. Then, the third return spring 63 uses its rebound force to push the toothed locking member 62 back to its original position, causing the toothed locking member 62 to engage with the circumferential toothed stage 61 again. The shaft tube rotation control column 60 can no longer rotate.

[0030] The aforementioned scroll locking and unlocking device 6 is easy for adults to unlock and automatically reset and lock, making it easy for adults to operate and use. However, it is not easy for small children or infants who can crawl or walk to operate and unlock the door, thus ensuring high safety.

[0031] Preferably, the toothed locking member 62 is integrally formed, and the inner sidewall of the toothed locking member 62 is in the shape of an arc, which is adapted to the outer circumferential surface of the annular toothed member 61. The inner sidewall of the arc-shaped member is provided with a locking level 621. The inner sidewall of the toothed locking member 62 and the annular toothed member 61 can be detachably contacted, and the locking level 621 and the annular toothed member 61 can be detachably meshed. The meshing and disengagement structure of the two is set to be more compatible, making locking and unlocking more flexible, stable and firm after locking, and quick unlocking for adults. The knob 66 ​​is integrally formed and includes a hand plate 660, a convex wall ring 661, and a rotating column 662. The upper sidewall of the rotating column 662 extends with an unlocking protrusion 663, which is eccentrically set. The top section of the shaft tube rotation control column 60 is provided with a rotating column positioning hole 602, and the lower section of the rotating column 662 is inserted into the shaft tube rotation control column 662. The knob 66 ​​is positioned within the positioning hole 602 of the rotating column, and the unlocking protrusion 663 is movably connected to the upper inner wall of the toothed locking member 62 to unlock. By gripping the hand plate 660 and rotating it, the knob 66 ​​rotates as a whole, and the unlocking protrusion 663 pushes open the toothed locking member 62, separating the locking stage 621 from the circumferential tooth stage 61, thus completing the unlocking. By gripping the hand plate 660 and rotating it in the opposite direction, the unlocking protrusion 663 returns to its low position and no longer presses against the toothed locking member 62. Then, the third return spring 63 rebounds and pushes the toothed locking member 62 back to its original position. The locking stage 621 of the toothed locking member 62 then engages with the circumferential tooth stage 61, and the shaft tube rotation control column 60 cannot rotate, thus achieving automatic locking. The hand plate 660 is exposed on the outer top of the cover 11B, and the convex wall ring 661 and the rotating column 662 are arranged on the reverse side of the cover 11B.

[0032] Preferably, a fourth return spring 65 is connected between the top of the shaft tube rotation control column 60 and the bottom of the knob 66. The fourth return spring 65 is inserted into the positioning hole 602 of the rotating column for positioning. The fourth return spring 65 is clamped between the top of the shaft tube rotation control column 60 and the bottom of the knob 66 ​​to prevent the shaft tube rotation control column 60 and the knob 66 ​​from becoming loose. Under normal conditions, the fourth return spring 65 lifts the knob 66, giving it elasticity. The top of the convex wall ring 661 extends and is fixed with... The ring-top positioning protrusion 664; the inner wall of the through hole 11B1 is provided with an unlocking positioning notch 11B2 and an upper locking notch 11B3; when the circumferential toothed stage 61 and the toothed locking member 62 are engaged and locked, the ring-top positioning protrusion 664 of the knob 66 ​​is embedded in the upper locking notch 11B3 for positioning and fixing. The fourth return spring 65 pushes up the knob 66 ​​to prevent the ring-top positioning protrusion 664 of the knob 66 ​​from dislodging from the upper locking notch 11B3, and can be extended. When the time lock is engaged, the roller blind 2 remains in place and does not retract; when the lower section of the knob 66 ​​pushes open the toothed locking member 62, it unlocks, the circumferential toothed member 61 separates from the toothed locking member 62, and the ring-top positioning protrusion 664 of the knob 66 ​​is embedded in the unlocking positioning notch 11B2 for positioning and fixation. The fourth return spring 65 pushes up the knob 66 ​​to prevent the ring-top positioning protrusion 664 of the knob 66 ​​from falling out of the unlocking positioning notch 11B2, thus unlocking the roller blind 2, which can then be unrolled and retracted; when the knob needs to be turned... When using knob 66, first hold the top section of knob 66 ​​with your hand and press it down to lower it, causing the ring top positioning protrusion 664 to disengage from the unlocking positioning notch 11B2 or the upper locking notch 11B3. Then, turn knob 66 ​​to rotate. The above structure is to prevent small children / infants who can crawl or walk from accidentally turning the unlocking gate directly, increasing the difficulty for small children / infants who can crawl or walk to unlock. Knob 66 ​​cannot be turned directly, adding an extra lock and improving safety awareness.

[0033] Preferably, the outer top of the cover 11B has a recess 11B4, the bottom wall of the recess 11B4 is flat, and the bottom wall of the recess 11B4 has a through hole 11B1; the top section of the knob 66 ​​is exposed in the recess 11B4, and the hand plate 660 is exposed in the recess 11B4, so that the top of the knob 66 ​​(hand plate 660) is hidden in the recess 11B4 as much as possible, so as to reduce the knob 66 ​​protruding upwards and being seen by children / infants who can crawl or walk, so as to prevent children / infants from easily grabbing the knob 66 ​​and turning it, preventing children from twisting the knob 66, and improving safety awareness.

[0034] Preferably: A roller blind type infant door gate further includes a circumferential elastic rotating curtain shaft device 15; the circumferential elastic rotating curtain shaft device 15 includes a bottom ring groove 151, a spring core column 152, a core column top piece 153, a long coil spring 154, a shaft bottom ring 155, a roller shaft tube 156, a shaft top connector 157, a roller blind base 14, and a roller blind fabric 2;

[0035] The front end of the roller blind 2 is axially fixed to the outer wall of the roller tube 156. The front end of the roller blind 2 is coaxially snapped, inserted, or fixedly connected to the roller tube 156 with screws. The circumferentially elastic rotating roller device 15 rotates circumferentially to unwind and rewind the roller blind 2. The top of the roller blind base 14 has a bottom ring groove 151. A spring core column 152 is vertically fixed in the middle of the bottom ring groove 151 with screws. The top of the spring core column 152 is movably connected to a core column top piece 153. The top of the spring core column 152 is inserted into the bottom post hole of the core column top piece 153 to form a movable connection. A long coil spring 154 is threaded through the spring core column 152. One end of the long coil spring 154 is hooked / inserted and fixed to the top of the core column. Part 153 is hooked / plugged to the bottom of the spring core column 152. The shaft bottom ring 155 is plugged, snapped, or fixed to the bottom of the reel tube 156 with screws. The shaft bottom ring 155 is movably inserted into the bottom ring groove 151 to prevent it from coming out during rotation and to play a role in rotation positioning. The spring core column 152, the core column top part 153, and the long coil spring 154 are all inserted into the tube hole of the reel tube 156. Only the core column top part 153 is snapped or fixed to the inner wall of the tube hole with screws. The shaft top connector 157 is snapped, plugged, or fixed to the top of the reel tube 156 with screws. The top of the shaft top connector 157 is snapped, plugged, or fixed to the lower section of the shaft tube rotation control column 60 with screws.

[0036] Under normal conditions, the third return spring 63 rebounds, keeping the toothed locking member 62 engaged with the circumferential toothed stage 61. The roller tube 156 cannot rotate, and the roller curtain 2 cannot be freely unwound or rewound. When a person holds the knob 66 ​​at the top and turns it, the lower outer wall of the knob 66 ​​pushes open the toothed locking member 62, disengaging the toothed locking member 62 from the circumferential toothed stage 61. In the unlocked state, the roller curtain 2 can be unwound when pulled outward. The core column top member 153, the long coil spring 154, the shaft bottom ring 155, the roller tube 156, the shaft top connector 157, and the shaft tube rotation control column 60 rotate synchronously, and the long coil spring 154 compresses with a stronger rebound force. When the roller blind 2 is pulled out to the appropriate length, the handle 660 is gripped and rotated in the opposite direction. This causes the unlocking protrusion 663 to return to its low position and stop pressing against the toothed locking member 62. Then, the third return spring 63 rebounds, causing the locking stage 621 of the toothed locking member 62 to engage with the circumferential teeth 61. The shaft tube rotation control column 60 cannot rotate, achieving automatic locking. The length of the roller blind 2 pulled out is fixed, preventing automatic retraction. In the unlocked state, when the roller blind 2 is in a loose state, the long coil spring 154 uses its rebound torque to cause the core column top member 153, the long coil spring 154, the shaft bottom ring 155, the roller tube 156, the shaft top connector 157, and the shaft tube rotation control column 60 to rotate in the opposite direction. Simultaneously, the roller tube 156 rotates in the opposite direction, retracting the roller blind 2. This structure facilitates the pulling out, fixing, and retracting of the roller blind 2. The above structure is reasonably designed, the components fit well, it is flexible to use, has strong torque, and automatically winds up tightly without looseness.

[0037] Preferably, a roller shutter type infant door gate further includes a base connecting vertical rod 12, a roller shutter lower seat 13, and a left door frame seat device 4; the top of the base connecting vertical rod 12 is fixedly connected to the roller shutter upper seat 11 with screws; the lower section of the base connecting vertical rod 12 is fixedly connected to the roller shutter lower seat 13 with screws, and the bottom end of the base connecting vertical rod 12 is fixedly connected to the roller shutter base 14 with screws; the base connecting vertical rod 12 connects the roller shutter upper seat 11, the roller shutter lower seat 13, and the roller shutter base 14 into a single fixed connection for easy installation.

[0038] The left door frame seat device 4 includes an upper left door frame seat 41 and a lower left door frame seat 42. The upper left door frame seat 41 and the lower left door frame seat 42 are respectively integrally injection molded from plastic. The upper left door frame seat 41 and the lower left door frame seat 42 are vertically aligned. The upper left door frame seat 41 and the lower left door frame seat 42 are respectively fixedly connected to the left side plate of the door frame by screw assembly. The upper left door frame seat 41 has an upper slot 411 with an upward opening on the front. The lower left door frame seat 42 has a hook plate 421 extending from the front. A lower slot 422 is formed between the hook plate 421 and the front wall of the lower left door frame seat 42.

[0039] A seat locking and unlocking device 5 is provided between the upper roller blind seat 11 and the upper left door frame seat 41; the upper roller blind seat 11 and the upper left door frame seat 41 are detachably connected by the seat locking and unlocking device 5, which facilitates the quick installation of the upper roller blind seat 11 with the upper left door frame seat 41 and the locking after installation. When not in use, it is convenient for adults to unlock and remove the upper roller blind seat 11.

[0040] The lower roller shutter seat 13 has an insertion hole 131 at the bottom and an insertion plate 421 inserted into the insertion hole 131. The front plate wall of the lower roller shutter seat 13 is inserted into the lower slot 422. The lower roller shutter seat 13 is detachably connected to the lower left door frame seat 42, which facilitates the quick installation of the lower roller shutter seat 13 with the lower left door frame seat 42 and locking after installation. When not in use, it is convenient to unlock and remove the lower roller shutter seat 13.

[0041] Preferably, the inner walls of the upper roller shutter seat 11 and the lower roller shutter seat 13 are provided with corresponding upper seat recesses 11E and lower seat recesses 132. After the upper roller shutter seat 11 and the lower roller shutter seat 13 are connected to the corresponding upper left door frame seat 41 and lower left door frame seat 42, the upper roller shutter seat 11 and the lower roller shutter seat 13 are embedded in the upper seat recesses 11E and lower seat recesses 132, and the upper roller shutter seat 11 and the lower roller shutter seat 13 enclose the corresponding upper left door frame seat 41 and lower left door frame seat 42 to form a semi-enclosed structure; that is, the upper roller shutter seat 11 encloses the front, left, right, upper and lower sides of the upper left door frame seat 41 to form a semi-enclosed structure, and the back of the upper left door frame seat 41 is not enclosed when it is attached to the door frame panel. The lower roller shutter seat 13 covers the front, left, right, top, and bottom of the lower left door frame seat 42, forming a semi-enclosed structure. The back of the lower left door frame seat 42 is not covered by the door frame panel. This makes the connection tighter, more secure, and more stable.

[0042] Preferably, the seat locking and unlocking device 5 includes a vertical hook 51, an unlocking vertical member 52, a first through hole 53, a first return spring 54, an unlocking horizontal member 55, a horizontal member groove 56, a second return spring 57, and a second through hole 58; the unlocking vertical member 52 and the unlocking horizontal member 55 are integrally injection molded.

[0043] A first through hole 53 is provided on one side of the bottom of the base shell 11A, and the first through hole 53 is located on the left side of the cavity 11C; the unlocking vertical member 52 is integrally formed, including a lower vertical rod 521 and an upper spring pressing member 522. The diameter of the lower vertical rod 521 is smaller than that of the upper spring pressing member 522. The side wall of the upper spring pressing member 522 has a first ramp 5221 extending inward. The lower vertical rod 521 passes through the first through hole 53 and extends out to the outer bottom. The upper spring pressing member 522 is larger than the first through hole 53 and will not fall out. The upper spring pressing member 522 is arranged at the end of the horizontal groove 56. The upper spring pressing member 522 is fixedly connected to the shell cover 11B with a first reset spring 54. A first return spring 54 is clamped between the 2 and the shell cover 11B; the first through hole 53 is arranged at one end of the horizontal part groove 56, the front part of the cavity 11C has a horizontal part groove 56, the front part of the horizontal part groove 56 has a second through hole 58, the second through hole 58 penetrates the bottom of the base shell 11A, the unlocking horizontal part 55 is movably placed in the horizontal part groove 56, one end of the unlocking horizontal part 55 has a second ramp 551, and the other end is pressed against the groove wall with a second return spring 57, so that the unlocking horizontal part 55 has elasticity. The second ramp 551 engages and slides with the first ramp 5221, and the front side wall of the unlocking horizontal part 55 extends with a locking protrusion 552; the second ramp 551 and the first ramp 5221 are each inclined at 45 degrees and contact each other. There are two vertical hooks 51, two second through holes 58, and two locking protrusions 552, which make the locking connection more secure.

[0044] A vertical hook 51 extends upward from the front of the upper left door frame seat 41, and an upper groove 411 is formed between the vertical hook 51 and the front wall of the upper left door frame seat 41. The vertical hook 51 is inserted into the interior of the base shell 11A through the second through hole 58 and cooperates with the locking protrusion 552 to lock and unlock. After locking, it hooks the base shell 11A tightly to prevent it from falling off.

[0045] During installation, the hook plate 421 is inserted into the insertion plate hole 131, and the front plate wall of the lower roller shutter seat 13 is inserted into the lower slot 422 to fix the lower roller shutter seat 13. The vertical hook 51 is inserted into the interior of the base shell 11A through the second through hole 58. The vertical hook 51 hooks the base shell 11A tightly, and the locking protrusion 552 is inserted into the top hook opening 511 of the vertical hook 51. The rebound force / reverse thrust of the second return spring 57 is used to push the unlocking horizontal piece 55 back to its original position, and the locking protrusion 552 is always fixed at the top hook opening 511 of the vertical hook 51, thereby locking the upper roller shutter seat 11 to the upper left door frame seat 41. The base shell 11A cannot come out, thus fixing the upper roller shutter seat 11.

[0046] To unlock and disassemble, first press the lower vertical rod 521 inwards by hand. The unlocking vertical member 52 will rise as a whole. The first ramp 5221 of the upper spring pressing member 522 will slide to the right. The sliding ramp 5221 will press the second ramp 551 to the right, pushing the unlocking horizontal member 55 to move to the right. The locking protrusion 552 will move to the right with the unlocking horizontal member 55, and the locking protrusion 552 will disengage from the top hook opening 511 of the vertical hook 51. The upper roller shutter seat 11 and the upper left door frame seat 41 will unlock and no longer be locked. At this time, the upper roller shutter seat 11 can be lifted at the same time. The vertical hook 51 will disengage from the second through hole 58, and the hook plate 421 will also disengage from the insertion plate hole 131. Then you can take it out. Move the upper roller shutter seat 11 and lower roller shutter seat 13 to complete the disassembly of the upper roller shutter seat 11 and lower roller shutter seat 13; then release the lower vertical rod 521, and use the reset counter-push force of the second reset spring 57 to move the unlocking horizontal member 55 to the left. The locking protrusion 552 moves to the left with the unlocking horizontal member 55 and resets to the locked state. Through the cooperation of the second ramp 551 and the first ramp 5221, the upper spring pressing member 522 is pushed to the left. The unlocking vertical member 52 rotates slightly counterclockwise to have reset space. At the same time, the first reset spring 54 presses down the unlocking vertical member 52, lowering the unlocking vertical member 52 to its original state, waiting for the next unlocking press.

[0047] The aforementioned seat locking and unlocking device 5, in conjunction with the upper left door frame seat 41 and the lower left door frame seat 42, completes locking and unlocking. This structure is securely locked, easy for adults to unlock (simply insert to lock, press to unlock); the lower vertical rod 521 is located at the bottom of the base shell 11A, making it relatively concealed and inaccessible to children / infants, ensuring good safety. The detachable connection between the upper roller shutter seat 11, lower roller shutter seat 13, and the upper left door frame seat 41 and lower left door frame seat 42 makes assembly and disassembly easy, and the assembled structure is very secure.

[0048] Preferably, a roller shutter type infant door gate further includes a right door frame seat device 7 and a roller shutter fixing rod 3; the upper end of the roller shutter fixing rod 3 has a protruding upper rod head 31; the upper rod head 31 and the lower end of the roller shutter fixing rod 3 are detachably connected to the right door frame seat device 7, which facilitates the unrolling, fixing and rewinding of the roller shutter fabric 2.

[0049] The right door frame seat device 7 includes an upper right door frame seat 71 and a lower right door frame seat 72. The upper right door frame seat 71 and the lower right door frame seat 72 are vertically aligned, which reduces the complexity of the structure.

[0050] The upper right door frame base 71 has an open upper right recess 711 on its front side. The upper right hook notch 712 is located on the lower left inner wall of the upper right recess 711. The upper rod head 31 is inserted into the upper right hook notch 712 through the upper right recess 711 and hooked tightly. After the length of the roller blind 2 is fixed, the upper rod head 31 cannot come out of the upper right hook notch 712. The upper rod head 31 and the upper right hook notch 712 are detachably connected. After the roller blind 2 is unlocked and loosened, the upper rod head 31 can be detached from the upper right hook notch 712.

[0051] The roller blind fixing rod 3 is axially fixedly connected to the roller blind fabric 2. The end of the roller blind fabric 2 is coaxial with the roller blind fixing rod 3 and fixedly connected by screws, plugs, or clips. The front of the lower right door frame seat 72 has an open lower right recess 721 with the opening facing upward. The left wall of the lower right recess 721 has a curtain seam 722. The lower end of the roller blind fixing rod 3 is inserted into the lower right recess 721 and hooked. The bottom edge of the roller blind fabric 2 is inserted into the curtain seam 722. After fixing the length of the roller blind fabric 2, the lower end of the roller blind fixing rod 3 cannot come out of the lower right recess 721, which improves the tightness of the lower end installation connection and improves the anti-slip capability. The lower end of the roller blind fixing rod 3 is detachably connected to the lower right recess 721. After the roller blind fabric 2 is unlocked and loosened, the lower end of the roller blind fixing rod 3 can be detached from the lower right recess 721.

[0052] The height between the lower right recess 721 and the upper right recess 711 is basically the length of the roller blind fixing rod 3. The roller blind fixing rod 3 can be inserted and connected between the lower right recess 721 and the upper right recess 711. The roller blind fixing rod 3 will not come out vertically. After the roller blind fabric 2 is unlocked, the roller blind fixing rod 3 can only be installed and removed from the front.

[0053] Under normal conditions, the third return spring 63 rebounds, keeping the toothed locking member 62 engaged with the circumferential toothed stage 61. The roller tube 156 cannot rotate, preventing free unwinding and rewinding of the roller blind 2. When a person holds the top section of the knob 66 ​​and twists it, the lower outer wall of the knob 66 ​​pushes open the toothed locking member 62, disengaging it from the circumferential toothed stage 61. At this point, the roller blind fixing rod 3 can be held and pulled outwards. The roller blind 2 begins to unwind. The core column top member 153, the long coil spring 154, the shaft bottom ring 155, the roller tube 156, the shaft top connector 157, and the shaft tube rotation control column 60 rotate synchronously. The long coil spring 154 compresses with a stronger rebound force. When the roller blind fixing rod 3 engages with the upper right hook notch 712 and the lower right recess 721, the person releases their grip, using the long coil spring... The compression and rebound force of the coil spring 154 pulls the core column top piece 153, shaft bottom ring 155, roller tube 156, shaft top connector 157, and shaft tube rotation control column 60 back to their original positions, thereby tightening the roller blind 2 and preventing it from becoming loose. The roller blind fixing rod 3 is hooked and locked. Then, the knob 66 ​​is turned in the opposite direction. The lower part of the knob 66 ​​no longer presses down, and the knob 66 ​​is reversed and reset. Then, the rebound thrust of the third reset spring 63 causes the toothed locking piece 62 to engage with the circumferential teeth 61. The shaft tube rotation control column 60 cannot rotate, and the roller tube 156 cannot rotate, thus fixing the roller blind 2 and forming a doorway to prevent infants and young children from freely entering and exiting.

[0054] When the above structure is in use, the upper rod head 31 is embedded in the upper right hook notch 712, making it less easily accessible to infants and young children. After the roller blind 2 is unrolled and locked to a fixed length, it prevents infants and young children from pushing over the roller blind 2 or the roller blind fixing rod 3, prevents children / infants from touching the upper rod head 31 with their hands, and prevents children / infants from accidentally pulling out the roller blind fixing rod 3, thus improving the safety and stability of its use.

[0055] The above structure not only fixes the length of the rolled-up curtain 2 after unrolling, preventing the curtain 2 from becoming loose and falling down due to infants pushing it, but also locks the roller tube 156 when not in use to prevent infants from pulling out the curtain 2. The above structure has good elasticity and stable rotation during unrolling and rewinding.

[0056] The height of the roller blind 2 is between 60 cm and 100 cm, and the length of the roller blind 2 is between 90 cm and 110 cm. The roller locking and unlocking device 6 is used to lock and unlock the roller blind 2. When unrolling, the roller locking and unlocking device 6 is used to unlock first, then the roller blind 2 is pulled out and fixed. Then the roller locking and unlocking device 6 is used again to lock and fix the length of the unrolled roller blind 2. The roller blind 2 will not be loose, preventing infants and young children from pushing the roller blind 2 and causing it to become loose or fall down. The roller blind 2 is installed stably.

[0057] This product consists of an upper roller blind seat 11, a seat connecting vertical rod 12, a lower roller blind seat 13, a roller blind base 14, and a circumferentially elastic rotating curtain shaft device 15, forming an elastic unwinding and rewinding device 1.

[0058] The roller blind 2 has a hand grip hole 21 near the roller blind fixing rod 3, which makes it easier for people to hold the roller blind fixing rod 3 to unroll and roll it up, and makes it easier to apply force to unroll.

[0059] When unwinding, this product first unlocks via the roller locking and unlocking device 6, then pulls out the roller blind 2, fixes the roller blind 2, and then locks it again via the roller locking and unlocking device 6 to fix the length of the unwinding roller blind 2. This prevents the roller blind 2 from becoming loose and prevents infants and young children from pushing the roller blind 2, causing it to become loose or fall down. The roller blind 2 is installed stably. The roller blind fixing rod 3 works in conjunction with the upper right hook notch 712, the lower right recess 721, and the curtain seam 722 to make it less accessible to infants and young children. After the roller blind 2 is unrolled and locked to a fixed length, it prevents infants and young children from pushing over the roller blind 2 or the roller blind fixing rod 3, prevents infants and young children from touching the upper rod head 31 with their hands, and prevents infants and young children from accidentally pulling out the roller blind fixing rod 3, thus improving the safety and stability of use. This product can not only fix the length of the unrolled roller blind 2, preventing the roller blind 2 from becoming loose and falling down due to infants and young children pushing the roller blind 2, but also lock the roller tube 156 when not in use to prevent infants and young children from pulling out the roller blind 2. The above structure has good elasticity and stable rotation during the unrolling and rewinding process.

Claims

1. A roller shutter type infant door gate, comprising a roller shutter upper seat and a roller locking / unlocking device; the roller shutter upper seat includes a base shell and a shell cover, the base shell and the shell cover being fixedly connected, and a cavity being formed in the top of the base shell; a roller locking / unlocking device is provided between the base shell and the shell cover; characterized in that: The spool locking and unlocking device includes a spool tube rotation control column, a circumferential toothed stage, a toothed stage locking element, a third return spring, a locking element connecting protrusion, and a knob. The base shell has a third through hole at the bottom of the cavity; a convex ring extends from the middle outer wall of the shaft tube rotation control column. The size of the convex ring is larger than the third through hole. The shaft tube rotation control column is movably connected to the third through hole. Its convex ring and upper section are arranged in the cavity, and its lower section protrudes below the third through hole. The upper outer wall of the shaft tube rotation control column is integrally formed with a circular circumferential toothed stage, which is located above the convex ring. The bottom wall of the concave cavity extends and protrudes with a locking member connecting protrusion. The toothed locking member is movably connected to the locking member connecting protrusion. A third return spring is pressed between the outer wall of the toothed locking member and the side wall of the concave cavity. The circumferential toothed stage and the toothed locking member are meshed. A button hole is provided at the rear top of the cover. A convex wall ring extends circumferentially from the middle of the knob, and the size of the convex wall ring is larger than the button hole. The knob passes through the button hole and is limited and prevented from detaching by the convex wall ring. The top section of the knob is exposed on the outer top of the cover, and the convex wall ring and the lower section are arranged on the reverse side of the cover. The lower section of the knob is movably connected to the toothed locking member for unlocking the toothed locking member.

2. A roller shutter-type infant doorway according to claim 1, characterized in that: The toothed locking component is integrally formed, with its inner sidewall in an arc shape that matches the outer circumferential surface of the circular toothed component. A locking stage is formed on the arc-shaped inner sidewall. The inner sidewall of the toothed locking component and the circumferential toothed component are in detachable contact, and the locking stage and the circumferential toothed component are in detachable meshing connection. The knob is integrally formed and includes a handgrip, a convex wall ring, and a rotating column. An unlocking protrusion extends from the upper sidewall of the rotating column. The top section of the shaft tube rotation control column has a rotating column positioning hole. The lower section of the rotating column is inserted into the rotating column positioning hole for positioning. The unlocking protrusion is movably connected to the upper inner wall of the toothed locking component for unlocking. The handgrip protrudes from the top of the cover, while the convex wall ring and rotating column are located on the reverse side of the cover.

3. A roller shutter-type infant gate according to claim 1, characterized in that: A fourth return spring is connected between the top of the shaft tube rotation control column and the bottom of the knob; the top of the convex wall ring extends to fix the unlocking positioning protrusion and the upper locking protrusion; the inner hole of the through hole has an unlocking positioning notch and an upper locking notch along the wall; when the circumferential teeth and the tooth locking member are engaged and locked, the upper locking protrusion of the knob is embedded in the upper locking notch; when the lower section of the knob pushes open the tooth locking member, it unlocks, the circumferential teeth and the tooth locking member separate, and the unlocking positioning protrusion of the knob is embedded in the unlocking positioning notch.

4. A roller shutter-type infant gate according to any one of claims 1 to 3, characterized in that: It also includes a circumferentially elastic rotating curtain shaft device; the circumferentially elastic rotating curtain shaft device includes a bottom ring groove, a spring core column, a core column top piece, a long coil spring, a bottom ring, a roller tube, a top connecting piece, a roller blind base, and a roller blind fabric; the front end of the roller blind fabric is axially fixed to the outer wall of the roller tube, and the front end of the roller blind fabric is coaxially fixedly connected to the roller tube; the circumferentially elastic rotating curtain shaft device unwinds and rewinds the roller blind fabric in a circumferentially rotating manner; the top of the roller blind base has a bottom ring groove, and a spring core column is vertically fixed in the middle of the bottom ring groove. The top of the spring core column is movably connected to a core column top piece. A long coil spring passes through the spring core column. One end of the long coil spring is fixed to the core column top piece, and the other end is fixed to the bottom of the spring core column. The shaft bottom ring is fixed to the bottom of the reel tube and is movably inserted into the bottom ring groove. The spring core column, core column top piece, and long coil spring are all inserted into the tube hole of the reel tube. Only the core column top piece is fixedly connected to the inner wall of the tube hole. The shaft top connector is fixedly connected to the top of the reel tube. The top of the shaft top connector is fixedly connected to the lower section of the shaft tube rotation control column.

5. A roller shutter-type infant gate according to any one of claims 1 to 3, characterized in that: It also includes a seat connecting vertical rod, a lower roller shutter seat, and a left door frame seat device; the top of the seat connecting vertical rod is fixedly connected to the upper roller shutter seat; the lower section of the seat connecting vertical rod is fixedly connected to the lower roller shutter seat; and the bottom end of the seat connecting vertical rod is fixedly connected to the roller shutter base. The left door frame seat device includes an upper left door frame seat and a lower left door frame seat. The upper left door frame seat and the lower left door frame seat are vertically aligned. The upper left door frame seat has an upper slot with an upward opening on its front side. The lower left door frame seat has a hook plate extending from its front side. A lower slot is formed between the hook plate and the front wall of the lower left door frame seat. A seat locking and unlocking device is provided between the upper roller shutter seat and the upper left door frame seat; the upper slot of the upper roller shutter seat and the upper left door frame seat are detachably connected by the seat locking and unlocking device. The bottom of the lower roller shutter seat has an insertion hole at the top, into which a hook plate is inserted. The front wall of the lower roller shutter seat is inserted into the lower slot. The lower roller shutter seat is detachably connected to the lower left door frame seat.

6. A roller shutter-type infant doorway according to claim 5, characterized in that: The seat locking and unlocking device includes a vertical hook, an unlocking vertical piece, a first through hole, a first return spring, an unlocking horizontal piece, a horizontal piece groove, a second return spring, and a second through hole; The base shell has a first through hole on one side bottom, which is located on the left side of the cavity. The unlocking vertical member is integrally formed and includes a lower vertical rod and an upper spring pressing member. The diameter of the lower vertical rod is smaller than that of the upper spring pressing member. The side wall of the upper spring pressing member has a first slope. The lower vertical rod passes through the first through hole and extends out to the bottom. The upper spring pressing member is arranged at the end of the horizontal member groove. A first return spring is fixedly connected between the upper spring pressing member and the shell cover. The first through hole is arranged at one end of the horizontal member groove. The front part of the cavity has a horizontal member groove. The front part of the horizontal member groove has a second through hole. The second through hole penetrates the bottom of the base shell. The unlocking horizontal member is movably placed in the horizontal member groove. One end of the unlocking horizontal member has a second slope. The other end is pressed against the groove wall by a second return spring. The second slope engages and slides with the first slope. A locking protrusion extends from the front side wall of the unlocking horizontal member. A vertical hook extends upward from the front of the upper left door frame seat, and an upper groove is formed between the vertical hook and the front wall of the upper left door frame seat; the vertical hook is inserted into the interior of the base shell through the second through hole and cooperates with the locking protrusion to lock and unlock, and after locking, it hooks the base shell tightly to prevent it from falling off.

7. A roller shutter-type infant doorway according to claim 5, characterized in that: The inner walls of the upper and lower roller shutter seats are provided with corresponding upper and lower recesses. After the upper and lower roller shutter seats are connected to the corresponding upper left and lower left door frame seats, the upper and lower roller shutter seats are embedded in the upper and lower recesses, and the upper and lower roller shutter seats cover the corresponding upper left and lower left door frame seats.

8. A roller shutter-type infant gate according to any one of claims 1 to 3, characterized in that: It also includes a right-side door frame seat device and a roller shutter fixing rod; the upper end of the roller shutter fixing rod has a protruding upper rod head; the upper rod head and the lower end of the roller shutter fixing rod are detachably connected to the right-side door frame seat device.

9. A roller shutter-type infant doorway according to claim 8, characterized in that: The right-side door frame seat device includes an upper right door frame seat and a lower right door frame seat, which are vertically aligned vertically. The upper right door frame seat has an open upper right recess on the front. The upper right hook recess is located on the lower left inner wall of the upper right recess. The upper rod head is inserted into the upper right hook recess through the upper right recess and hooked tightly. The upper rod head and the upper right hook recess are detachably connected. The roller blind fixing rod is axially fixedly connected to the roller blind fabric, and the end of the roller blind fabric is axially fixedly connected to the roller blind fixing rod. The front of the lower right door frame seat has an open lower right recess, the opening of the lower right recess faces upward, and a curtain slit is opened on the left wall of the lower right recess. The lower end of the roller blind fixing rod is inserted into the lower right recess and hooked tightly, and the bottom edge of the roller blind fabric is inserted into the curtain slit. The lower end of the roller blind fixing rod is detachably connected to the lower right recess.

10. A roller shutter-type infant gate according to any one of claims 1 to 3, characterized in that: The outer top of the shell cover has a recessed opening with a flat bottom wall and a through hole for the knob; the top section of the knob protrudes from the recessed opening.

Images