Horizontal type curtain limiting stopper controlled by double systems

Abstract

According to the technical scheme, the double-system-controlled horizontal type curtain limiting stopper is characterized by comprising a limiting stopper body, the limiting stopper body is arranged in a horizontal type curtain and matched with two rotatable transmission rods in the horizontal type curtain, and the limiting stopper body comprises a base. A fixed screw and a limiting box A and a limiting box B which are in sliding fit with the base are arranged on the base, a connecting gear and a nut gear which are in linkage are arranged in each of the limiting box A and the limiting box B, a lock catch piece connected with the connecting gear in a clamped mode is arranged in the middle of the connecting gear, and a matching hole for a transmission rod to penetrate through is formed in the middle of the lock catch piece. Synchronous rotation of the transmission rod and the connecting gear is realized through the locking fastener; a threaded hole is formed in the middle of the nut gear, and threaded fit between the nut gear and the screw is achieved through the threaded hole. According to the utility model, the installation and the adjustment are simple, the occupied width is reduced, a narrower curtain can be made, and the miniaturization is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of curtains, and more specifically to a horizontal curtain limiter controlled by dual systems. Background Art

[0002] The horizontal curtains controlled by dual systems use two systems to control the two lower beams to achieve different adjustments of the curtains. Among them, the control system includes a transmission rod and a rope winding tube. The motor or the brake head drives the quadrilateral transmission rod and drives the rope winding tube to wind and pull the rope through the transmission rod, and then the lifting and lowering of the lower beam can be controlled by the rope. Because it is a dual system control, when the two lower beams are raised and lowered, in order to prevent the two lower beams from colliding and to stop in time after the lower beams reach the limit position, it is necessary to set a limiter in the system to limit the rotation of the transmission rod inside the curtain. The traditional limiter is generally set by setting a screw that rotates synchronously with the transmission rod, and then cooperates with the nut on the screw to convert the rotation of the transmission rod into the linear motion of the nut, and the limit is achieved by constraining the distance of the linear movement of the nut.

[0003] When applied to a dual system, two groups of screws and nuts must be set up. At the same time, the dual system needs to adjust the position of the nuts in the two groups of screws and nuts so that when the two lower beams are about to collide, the two nuts in the limiter can resist the limit in time to prevent the lower beams from colliding. However, the nuts in traditional screw nuts need to rely on the rotation of the screw to move, and the position cannot be conveniently adjusted directly on the screw. As a result, when applied to a dual system, it is more troublesome to adjust the linkage position of the nuts in the two groups of screw nuts. At the same time, both screws need to rotate synchronously with the corresponding transmission rods, which results in a larger width dimension of the limiter, which is not conducive to miniaturization. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a horizontal curtain limiter controlled by a dual system, which is simple to install and adjust, and has a reduced width, so that narrower curtains can be made, which is conducive to miniaturization.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dual-system controlled horizontal curtain limiter, comprising a limiter body, the limiter body is arranged in the horizontal curtain, and cooperates with two rotatable transmission rods in the horizontal curtain, the limiter body comprises a base, the base is provided with a fixed screw and a limit box A and a limit box B that slide with the base, the limit box A and the limit box B are both provided with linked connecting gears and nut gears, the middle part of the connecting gear is provided with a locking piece that is clamped with the connecting gear, the locking piece is circumferentially fixed to the transmission rod and can slide axially, and the nut gear is threadably matched with the screw.

[0006] The utility model is further configured as follows: a matching hole for the transmission rod to pass through is provided in the middle of the locking piece, and the synchronous rotation of the transmission rod and the connecting gear is achieved through the locking piece; a threaded hole is provided in the middle of the nut gear, and the threaded matching of the nut gear and the screw is achieved through the threaded hole.

[0007] The utility model is further configured as follows: the nut gear is provided with locking parts protruding at both ends along the axial direction, and the locking parts facing the two nut gears in the limit box A and the limit box B are adapted to each other; two locking blocks are correspondingly provided on both ends of the base, and the locking blocks are adapted to the locking parts.

[0008] The utility model is further configured as follows: a protruding connecting arm is provided on the connecting gear, a notch matched with the connecting arm is provided on the locking member, and the connecting arm can extend into the notch to realize synchronous rotation of the two.

[0009] The utility model is further configured as follows: a clamping claw is provided at the end of the connecting arm, and when the connecting arm is extended into the notch, the clamping claw is engaged with the outer end surface of the notch.

[0010] The utility model is further configured as follows: two connecting arms are symmetrically arranged, and four notches are annularly symmetrically arranged.

[0011] The utility model is further configured as follows: the linkage between the connecting gear and the nut gear is directly meshed or a transition gear is provided which meshes with both the connecting gear and the nut gear, and the connecting gear and the nut gear are linked by the transition gear.

[0012] The utility model is further configured as follows: fixing grooves and pressing blocks are arranged at both ends of the base, a threaded surface matched with a screw rod is arranged in the fixing groove, and the screw rod is fixedly arranged between the fixing groove and the pressing block.

[0013] In summary, the utility model has the following beneficial effects:

[0014] Compared with the prior art, the utility model is provided with a fixed screw rod. At the same time, the limit box A and the limit box B are linked by connecting gears and corresponding transmission rods, and then cooperate with the nut gear to make the limit box A and the limit box B move on the fixed screw rod. Compared with the traditional control using two screw rods, the limit box A and the limit box B of the utility model share a screw rod, and the screw rod is fixed and does not move, the structure is simpler, the width of the limiter can be effectively reduced, and a narrower curtain can be made.

[0015] At the same time, the utility model is provided with a locking piece. When the notch on the locking piece is separated from the connecting arm, the rotation of the transmission rod will not drive the rotation of the connecting gear, so that the position of the lower beam can be flexibly adjusted, that is, the transmission rod can be flexibly rotated and adjusted. When the adjustment is completed, the locking piece is inserted into the connecting arm, and the limiter can work normally. The installation and debugging of the limiter is more convenient and quick, and it is especially suitable for dual-system curtains. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 1 is an overall schematic diagram of the curtain of this embodiment;

[0017] Figure 2 Schematic diagram of the overall internal structure of the curtain in this embodiment;

[0018] Figure 3 Schematic diagram of the structure of the stopper in this embodiment;

[0019] Figure 4 is an enlarged structural diagram of the locking block of this embodiment;

[0020] Figure 5 2 is a schematic diagram of the structure of two limit boxes in this embodiment;

[0021] Figure 6 This is a schematic diagram of the matching structure between the connecting gear and the nut gear in the first embodiment;

[0022] Figure 7 This is a schematic diagram of the matching structure between the connecting gear and the nut gear in the second embodiment;

[0023] Figure 8 It is an exploded schematic diagram of the fixing structure of the screw rod in this embodiment.

[0024] Figure numerals: 1, limiter body; 101, base; 2, screw; 3, limit box A; 4, limit box B; 5, connecting gear; 501, connecting arm; 5011, claw; 6, nut gear; 601, threaded hole; 602, locking part; 7, locking piece; 701, matching hole; 702, notch; 8, locking block; 56, transition gear; 9, transmission rod; 10, driving mechanism; 11, horizontal curtain; 21, fixing groove; 2101, threaded surface; 22, pressing block. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] This embodiment discloses a horizontal curtain stopper controlled by dual systems, such as Figure 1-7 As shown, the stopper body 1 includes a stopper body 1, which is arranged in a horizontal curtain 11 and cooperates with two rotatable transmission rods 9 in the horizontal curtain 11. Figure 2The function of the two transmission rods 9 is to drive the rope winding tube to reel in the rope so that the two lower beams of the curtain can be raised and lowered; the limiter of this embodiment is used to limit the rotation amount of the transmission rod 9, thereby ensuring that the two lower beams can stop in time after reaching the limit position, and preventing the two lower beams from colliding.

[0027] For details, please refer to Figure 3 The limiter body 1 includes a base 101, on which a fixed screw rod 2 and a limit box A3 and a limit box B4 that are slidably matched with the base 101 are arranged. The limit boxes A3 and B4 are both provided with a linked connecting gear 5 and a nut gear 6. The connecting gear 5 is provided with a locking member 7 that is engaged with it in the middle, and a matching hole 701 for the transmission rod to pass through is provided in the middle of the locking member 7. The transmission rod and the connecting gear 5 are synchronously rotated by the locking member 7. The nut gear 6 is provided with a threaded hole 601 in the middle, and the threaded matching of the nut gear 6 and the screw rod 2 is achieved by the threaded hole 601. Through the above structure, this embodiment uses a fixed screw rod 2, so that the limit box A3 and the limit box B4 use the screw rod 2 together, and the screw rod 2 is fixed on the base 101, which avoids the width margin required due to the rotation offset of the screw rod. At the same time, the use of one screw rod saves more space in structure than the original two screw rods, and is suitable for narrower curtains.

[0028] Furthermore, the rotation of the transmission rod 9 is converted into the linear sliding of the limit box A3 and the limit box B4 through the cooperation of the connecting gear 5 and the nut gear 6, and a locking member 7 is provided at the same time. Since the locking members 7 of the limit boxes A and B are symmetrical and identical in structure, the locking member 7 of the limit box A is used as an example in the attached drawings for explanation. When the locking member 7 is not engaged in the connecting gear 5, the limit box A is not linked with the transmission rod, and the transmission rod can be directly rotated and adjusted, that is, the position of the lower beam is adjusted, and the locking member 7 is engaged after the adjustment is completed, and the limit boxes A and B can be normally linked with the transmission rod and work. Therefore, when this embodiment is applied to the horizontal curtain controlled by the dual system, the transmission rod can be rotated to adjust the position of the two lower beams first, and at this time, the locking members of the limit boxes A and B are not engaged, and the two limit boxes will not move. After the position of the lower beam is adjusted, the locking member 7 can be engaged. When this embodiment is applied to the horizontal curtain controlled by the dual system, the installation and adjustment are more convenient.

[0029] For further information, please refer to Figure 4-5 The nut gear 6 is provided with locking parts 602 protruding at both ends in the axial direction, and the locking parts 602 facing the two nut gears 6 in the limit box A3 and the limit box B4 are adapted; two locking blocks 8 are correspondingly provided at both ends of the base 101, and the locking blocks 8 are adapted to the locking parts 602. In order to avoid direct collision between the limit box A3, the limit box B4 and the base 101, the limit is achieved by setting the abutment between the protruding locking part 602 and the locking block 8, such as Figure 4At this time, the limit box A and the limit box B have reached the limit positions on both sides. At this time, the locking block 8 is against the locking part 602, and the nut gear 6 can no longer rotate, achieving the limit position; see again Figure 5 At this time, the limit box A and the limit box B are at the closest limit position. At this time, the locking parts 602 of the two nut gears 6 in the limit box A and the limit box B are against each other to prevent the two limit boxes from directly colliding.

[0030] For further information, please refer to Figure 8 In order to ensure that the screw 2 is stably fixed and the locking block 8 can accurately match the locking portion 602, the present embodiment preferably provides a fixing groove 21 and a pressing block 22 at both ends of the base 101, and a threaded surface 2101 matching the screw 2 is provided in the fixing groove 21, and the screw 2 is fixedly arranged between the fixing groove 21 and the pressing block 22. Through the above structure, the screw 2 just matches the threaded surface 2101 in the fixing groove 21, and then the pressing block 22 presses the screw, so that the screw 2 is stably fixed and will not rotate, and the accurate abutment and fit of the locking block 8 and the locking portion 602 is also ensured. If the screw is simply pressed and fixed by friction, after long-term use, the screw 2 is prone to rotational deviation, resulting in the locking block 8 and the locking portion 602 being easily offset and unable to accurately abut and fit, affecting the reliable use of the limiter.

[0031] For further information, please refer to Figure 3 , a protruding connecting arm 501 is provided on the connecting gear 5, and a notch 702 adapted to the connecting arm 501 is provided on the locking member 7, and the connecting arm 501 can be inserted into the notch 702 to achieve synchronous rotation of the two. Preferably, a claw 5011 is provided at the end of the connecting arm 501, and when the connecting arm 501 is inserted into the notch 702, the claw 5011 is engaged with the outer end surface of the notch 702. Through the above structure, the locking member 7 is connected to the connecting arm 501 on the connecting gear 5, and the structure is simple and reliable, and the transmission is stable.

[0032] Further, as a preferred embodiment, two connecting arms 501 are symmetrically provided, and four notches 702 are annularly symmetrically provided. Providing two connecting arms 501 facilitates disassembly and assembly, while providing four notches 702 allows for more angular positions to cooperate with the connecting arms 501, facilitating the clamping installation between the two.

[0033] Further, the linkage between the connecting gear 5 and the nut gear 6 has two embodiments. The first embodiment is to set a transition gear 56 between the connecting gear 5 and the nut gear 6, and the two gears are linked through the transition gear 56. The first embodiment can more easily adjust the speed ratio, and the setting of the transition gear 56 can change the center distance between the gears, which increases the flexibility of the layout design. At the same time, the transition gear can change the transmission direction of force or motion, which is convenient for matching the drive mechanism 10 with different rotation directions and speeds of the drive rod. The second embodiment is that the two gears are directly meshed. The structure of direct meshing is simpler and the volume can be more compact, so the linkage mode of the two gears can be selected according to real-time needs. For example, when the two drive mechanisms 10 drive the two transmission rods to rotate in different directions, one of the limit boxes can be used in the first embodiment and the other limit box can be used in the second embodiment, so that the transmission rods 9 with different rotation directions can be better matched, so the first embodiment and the second embodiment can be used alone or in combination. It has a wider adaptability.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A horizontal curtain stopper controlled by dual systems, comprising a stopper body (1), wherein the stopper body (1) is arranged in the horizontal curtain and cooperates with two rotatable transmission rods in the horizontal curtain, and is characterized in that: The limiter body (1) comprises a base (101), on which a fixed screw rod (2) and a limit box A (3) and a limit box B (4) which are slidably matched with the base (101) are arranged, and the limit boxes A (3) and B (4) which are both provided with linked connecting gears (5) and nut gears (6), and a locking member (7) which is clamped with the connecting gear (5) is provided in the middle part of the connecting gear (5), and the locking member (7) is circumferentially fixed to the transmission rod and can slide axially, and the nut gear (6) is threadably matched with the screw rod (2).

2. A dual-system controlled horizontal curtain stopper according to claim 1, characterized in that: The locking member (7) is provided with a matching hole (701) in the middle for the transmission rod to pass through, and the locking member (7) is used to realize the synchronous rotation of the transmission rod and the connecting gear (5); the nut gear (6) is provided with a threaded hole (601) in the middle, and the threaded matching of the nut gear (6) and the screw rod (2) is realized through the threaded hole (601).

3. According to claim 1, a horizontal curtain stopper with dual system control, characterized in that: The nut gear (6) is provided with locking portions (602) protruding at both ends in the axial direction, and the locking portions (602) facing the two nut gears (6) in the limit box A (3) and the limit box B (4) are adapted to each other; two locking blocks (8) are correspondingly provided at both ends of the base (101), and the locking blocks (8) are adapted to the locking portions (602).

4. The dual-system controlled horizontal curtain stopper according to claim 1, characterized in that: The connecting gear (5) is provided with a protruding connecting arm (501), and the locking member (7) is provided with a notch (702) adapted to the connecting arm (501), and the connecting arm (501) can extend into the notch (702) to achieve synchronous rotation of the two.

5. A dual-system controlled horizontal curtain stopper according to claim 4, characterized in that: A claw (5011) is provided at the end of the connecting arm (501), and when the connecting arm (501) extends into the notch (702), the claw (5011) engages with the outer end surface of the notch (702).

6. A dual-system controlled horizontal curtain stopper according to claim 4 or 5, characterized in that: The two connecting arms (501) are symmetrically arranged, and the four notches (702) are annularly symmetrically arranged.

7. The dual-system controlled horizontal curtain stopper according to claim 1, characterized in that: The linkage between the connecting gear (5) and the nut gear (6) is a direct meshing linkage or a transition gear (56) is provided that meshes with both the connecting gear (5) and the nut gear (6), and the connecting gear (5) and the nut gear (6) are linked via the transition gear (56).

8. The dual-system controlled horizontal curtain stopper according to claim 1, characterized in that: The base (101) is provided with a fixing groove (21) and a pressing block (22) at both ends, the fixing groove (21) is provided with a threaded surface (2101) adapted to the screw rod (2), and the screw rod (2) is fixedly arranged between the fixing groove (21) and the pressing block (22).

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