CN209855661U - Lifting type push-pull positioning roller shutter with demoulding hole - Google Patents

Abstract

An object of the utility model is to provide a do not have stay cord that exposes realizes the curtain body auto-lock location, can electrodeless regulation curtain body expansion length's over-and-under type push-and-pull location book curtain. A lifting type push-pull positioning roller shutter with a demoulding hole comprises a shutter body, a mounting box and a push-pull positioning device; the mounting box is provided with positioning columns, a positioning hole group is arranged around each positioning column and arranged on a bottom plate of the mounting box, each positioning hole group forms one positive multi-deformation, and the positioning columns and the positive multi-deformation formed by the positioning hole groups are concentric. Each positioning hole group is provided with four positioning holes, wherein a pair of diagonal positioning holes are collinear with all positioning columns.

Description

Lifting type push-pull positioning roller shutter with demoulding hole

Technical Field

The utility model relates to a curtain, in particular to a push-pull positioning curtain which can be stopped at any position.

Background

The curtain is made of curtain cloth through resin processing or weaving bamboo strips or reed rods into a roll shape. The curtain is lifted by a pull rope or a chain. The common curtain is drawn and folded upwards by a pull rope connected to the lower end of the common curtain, the curtain automatically droops by releasing the pull rope, and the pull rope is locked or released by a retraction mechanism fixed on the upper rail. When people fold the curtain, the extending end of the pull rope needs to be pulled, so that the other end of the pull rope can lift the drooping end of the curtain, and the curtain is folded. The curtain controlled by the mode is relatively laborious to push and pull the pull rope, the pulled pull rope is exposed and hung, is excessively burdensome and cannot be stored, the exposed pull rope is often entangled with other objects, and the exposed pull rope falls on the ground, so that children are easily stumbled or even tied, and potential safety hazards are caused.

Disclosure of Invention

An object of the utility model is to provide a do not have stay cord that exposes realizes the curtain body auto-lock location, can electrodeless regulation curtain body expansion length's over-and-under type push-and-pull location (window) curtain.

A lifting type push-pull positioning roller shutter with a demoulding hole comprises a shutter body, a mounting box and a push-pull positioning device.

Push-pull positioning device

Preferably, the push-pull positioning device is positioned in a mounting box, and the mounting box comprises an upper mounting plate and a lower mounting plate; the push-pull positioning device comprises a driving reel, a transmission wheel set and a driven reel, positioning columns are arranged on the installation lower plate, and the driving reel, the transmission wheel set and the driven reel respectively correspond to the respective positioning columns;

the transmission wheel set comprises a driving wheel and a driven wheel, a volute spiral spring is contained in the driven wheel, and the head end of the volute spiral spring is connected with the driving wheel; a cord is respectively wound in the driving reel and the driven reel, one end of the cord is fixed on the reel, and the other end of the cord is fixed at the bottom of the curtain body; when the driving reel is paid off outwards, the driving wheel winds the volute spiral spring inwards; the direction of the spiral spring winding into the driving wheel is opposite to the direction of the spiral. The direction of the scroll refers to the direction in which the scroll spring is wound using conventional techniques. When the contact surface of the spiral spring and the driven wheel is an inner surface, the contact surface of the spiral spring and the driving wheel is an outer surface.

The lengths of the corresponding ropes of the active reel and the driven reel are the same, and the lengths of the ropes stored in the reels are also the same. Thereby keeping the bottom of the curtain body horizontal and enabling the bottom of the curtain body to be horizontally lifted.

Preferably, the driving reel, the driven reel, the driving wheel and the driven wheel are respectively provided with a gear, a winding post and retaining rings, the gear and the retaining rings are respectively positioned at two ends of the winding post, the four gears are meshed in sequence, and a distance is reserved between the four retaining rings. Therefore, only one end of each wheel (the reel or the transmission wheel) is machined into the gear, so that the machining difficulty is reduced, and the installation direction of the wheel is indicated.

As a preferred scheme, the driving reel, the driving wheel, the driven wheel and the driven reel are sequentially meshed, the volute spiral spring in a natural state is positioned in the driven wheel, and the direction of the volute spiral spring wound by the driving wheel is the same as the direction of the cord wound by the driving reel; the winding direction of the active reel is the same as that of the driven reel. When the gears are in meshing transmission, the rotation directions of the adjacent gears are opposite. When the driving reel is paid off outwards, the volute spiral spring is wound by the driving wheel in a reverse direction, the volute spiral spring in the driving wheel is in a deformation state, and the dead weight of the curtain body is balanced with the elastic force of the volute spiral spring. Preferably, the length of the spiral spring is greater than the length of the cord wound around the reel. Thus, after the wire is completely released, the scroll spring still has the margin to be coiled in the driven wheel. Therefore, the tail end of the spiral spring and the driven wheel do not need to be fixed, and the spiral spring can be kept in the driven wheel by the aid of the elastic force of the spiral spring.

Driving wheel and driven wheel

Preferably, the winding post of the driving wheel is thicker than that of the driven wheel. The thicker the winding post of the driving wheel is, the larger the curvature radius of the deformation of the volute spiral spring is. Therefore, when the spiral spring winds into the driving wheel, the curvature radius of the spring in the driving wheel is larger than that of the spring in the driven wheel along with the winding of the spiral spring into the driving wheel, namely, the spiral spring winds into the driving wheel more, the tendency of the spring to recover and deform is weaker, and the problem that the curtain body automatically rises due to the fact that the elastic force of the tail portion of the spring is too large is avoided.

Preferably, after the spiral spring is installed in place in the driven wheel, the diameter of the winding post of the driven wheel overlapped with the spiral spring is equal to the diameter of the winding post of the driving wheel. Equal diameters means that the difference between the two diameters is within an allowable error range and not mathematically equal. In this way, when the spiral spring is just wound into the driving wheel, the curvature radius of the spring in the driving wheel is almost equal to that of the spring in the driven wheel, and after all the cords in the reel are discharged, the diameter of the spring in the driving wheel is maximized, and the diameter of the spring in the driven wheel is minimized.

As preferred scheme, the head end of volute spiral spring is equipped with the couple, is equipped with the socket on the wrapping post of action wheel, and the couple is hung in the socket. Preferably, the winding post of the driving wheel comprises a positioning sleeve and a winding sleeve, the positioning sleeve and the winding sleeve are coaxial and have a distance, a radial connecting rib plate is arranged between the positioning sleeve and the winding sleeve, and the socket penetrates through the winding sleeve. The hook is inserted into the socket and hooks the winding sleeve to realize the connection of the volute spiral spring and the driving wheel. Preferably, the radial ends of the socket are provided with slopes. The slope guides the spiral spring to smoothly wind the spring into the winding post. The diameter of the winding sleeve is the diameter of the winding column of the driving wheel. As the preferred scheme, the driven wheel comprises a gear assembly and a check ring assembly, the gear assembly consists of a gear and a positioning sleeve, and the gear and the positioning sleeve are concentric and fixed; the retainer ring assembly consists of an inner sleeve, an outer sleeve and retainer rings which are coaxial, a space is arranged between the inner sleeve and the outer sleeve, a radial connecting plate is arranged between the inner sleeve and the outer sleeve, and the positioning sleeve is inserted into the inner sleeve and is in clearance fit with the inner sleeve; the diameter of the outer sleeve is used as the diameter of the winding post of the driven wheel. The gear assembly and the check ring assembly are detachable, a volute spiral spring product can be conveniently sleeved on the outer sleeve, the positioning sleeve is inserted into the inner sleeve, and the gear assembly and the check ring assembly are combined into a driven wheel with a volute spiral spring inside. The driven wheel is detachable, so that the finished product volute spiral spring is convenient to use, and the cost is reduced.

As the preferred scheme, the volute spiral spring comprises a spring belt with the same width, the spring belt is rolled into a cylinder by the traditional process, and the head end of the spring belt is provided with a hook which is in a T shape.

Mounting upper plate and mounting lower plate

Preferably, the mounting upper plate and the mounting lower plate form a mounting box for accommodating the driving reel, the transmission wheel set and the driven reel; the mounting box is provided with an outlet allowing the appearance of a cord; the installation upper plate is provided with screw through holes which are in one-to-one correspondence with the positioning columns of the installation lower plate, and the positioning columns are provided with screw holes which are aligned with the screw through holes. After the screw penetrates through the screw through hole and is screwed into the screw hole, the mounting upper plate is fixed and the mounting lower plate is fixed. The mounting upper plate and the mounting lower plate limit the axial positions of the two reels and the transmission wheel set, so that the four gears are kept meshed.

As the preferred scheme, the mounting lower plate is provided with a lower plate limiting groove, the lower plate limiting groove is provided with lower plate arc-shaped parts which correspond to the gears one by one, and each lower plate arc-shaped part is in clearance fit with the corresponding gear. The lower plate limiting groove is matched with the gear and is larger than the size of the retainer ring, so that an indicating function is achieved, and the gear is provided with the lower mounting plate. Preferably, the lower plate limiting groove is aligned with the mounting lower plate, and each lower plate arc part of the lower plate limiting groove is coaxial with the corresponding positioning column. After the diameter of the gear and the gap between the gear and the lower plate limiting groove are determined, the position and the size of the lower plate limiting groove can be determined; and then concentric positioning columns are arranged at the circle centers of the arc parts of the lower plates of the lower plate limiting grooves, so that the positions of the positioning columns are determined. Each positioning column, wheel and corresponding lower plate arc part are coaxial.

As preferred scheme, the installation hypoplastron includes bottom plate and two relative curb plates, and the hypoplastron spacing groove is located the bottom plate, and the installation upper plate is relative with the bottom plate. The upper plate and the lower plate are arranged to form a rectangular box body, and two ends of the box body are not provided with closed openings to serve as wire outlets.

As a preferred scheme, a positioning hole group is arranged around each positioning column, the positioning holes are arranged on the bottom plate, each positioning hole group forms a positive multi-deformation, and the positioning columns are concentric with the positive multi-deformation formed by the positioning hole groups. The positioning columns and the installation lower plate are integrally molded by injection, and each positioning hole group can be used as a demolding hole during injection molding, so that each positioning column can be horizontally moved to demold, and the verticality of the positioning column and the bottom plate is kept. Preferably, each positioning hole group has four positioning holes, and a pair of diagonal positioning holes is collinear with all positioning columns. The four positioning holes enable the periphery of the positioning column to be evenly stressed, and the perpendicularity can be guaranteed. The more vertical the positioning column is to the bottom plate, the smaller the impact between the wire guide wheel and the positioning column, and between the driving wheel or the driven wheel and the positioning column.

As a preferred scheme, the mounting upper plate is provided with an upper plate limiting groove, the upper plate limiting groove is provided with upper plate arc parts which are in one-to-one correspondence with the retainer rings, and each upper plate arc part is in clearance fit with the corresponding gear; the upper plate limiting groove is aligned with the upper plate, and each upper plate arc-shaped part is coaxial with the corresponding screw through hole. After the diameter of the retainer ring and the gap between the retainer ring and the upper plate limiting groove are determined, the position and the size of the upper plate limiting groove can be determined; and then concentric screw through holes are arranged at the circle center of each upper plate arc part of the upper plate limiting groove, so that the positions of the screw through holes are determined. Each screw through hole, the wheel and the corresponding upper plate arc part are coaxial. And then after the screw through holes are matched with the corresponding positioning columns, the upper plate and the lower plate are installed to realize centering.

As a preferred scheme, cylindrical bulges are arranged on the mounting upper plate, each screw through hole corresponds to one bulge, and the screw through holes are coaxial with the respective bulges; each protrusion is inserted into the corresponding positioning sleeve or the corresponding positioning sleeve, and the protrusion is contacted with the corresponding positioning column or has a gap; or, the positioning column is provided with a groove allowing the protrusion to be inserted, and the height of the groove is matched with the protrusion. The protrusion and the positioning column simultaneously position the axial position of the winding column, and simultaneously lock the relative position between the upper mounting plate and the lower mounting plate; in addition, the bulges protect the screws, the driving reel, the driven reel, the driving wheel and the driven wheel are not in direct contact with the screws, and the bulges isolate the vibration impact when the driving reel, the driven reel, the driving wheel and the driven wheel rotate.

Conductor pole

Preferably, the mounting lower plate is provided with a pair of center conductor posts and at least a pair of side conductor posts; the two center lead posts are collinear with the positioning post, and the two side lead posts deviate from the straight line where the positioning post is located; the two central conductor columns are symmetrically arranged, and the two side conductor columns are symmetrically arranged; the thread rope is led out from the outlet by sequentially bypassing the side conductor column and the central conductor column. The side guide wire column tensions the wire rope, and the central guide wire column makes the led-out wire rope and the centers of the two reels collinear, so that the smooth wire rope outgoing is facilitated.

Preferably, the side guide posts are provided with two pairs, and the two pairs of side guide posts are symmetrical about the straight line where the positioning post is located. As a preferred scheme, the thread rope is led out from the outlet by sequentially bypassing the two side conductor columns and the central conductor column; or the thread rope is led out from the outlet after bypassing any one side conductor column and the central conductor column; or the cord is led out from the outlet after sequentially passing around the two side conductor columns, and the central conductor column is tightly propped against the cord between the two side conductor columns. The two wire guide columns are beneficial to tensioning the wire rope and eliminating the change of the direction of the wire rope caused by the change of the diameter of the wire rope when the wire winding wheel is used for winding and unwinding the wire rope.

Preferably, the center conductor post is provided with a screw hole, the mounting upper plate is provided with a screw through hole aligned with the center conductor post, and the screw is screwed into the screw hole of the center conductor post through the screw through hole. Therefore, the two sides of the upper mounting plate and the lower mounting plate are fixed relatively, the central guide wire column is prevented from being deformed and displaced under the pressure of the thread rope, the consistency of the paying-off of the two reels is kept, and the bottom of the curtain is kept horizontal all the time. Preferably, the central conductor post is located outside the lower plate limiting groove, and a gap is formed between the central conductor post and the lower plate limiting groove.

Preferably, the mounting plate has a ring matching the center conductor post, the center conductor post is inserted into the ring, and the screw through hole is coaxial with the ring. The ring locks the position of the center conductor post to avoid direct impact of vibration on the screw.

Active reel and driven reel

Preferably, the winding post of the driving winding wheel and the winding post of the driven winding wheel are both conical, and one end of the winding post connected with the gear is a large end, and the other end of the winding post is a small end. When the curtain body moves upwards and the ropes are recovered into the reels, the ropes of the two reels are displaced from the large end to the small end, so that the driving reels and the driven reels can be synchronously wound up in the same length, and the bottom of the curtain body is always kept horizontal.

Wire guide wheel

According to the preferable scheme, a fixing plate is arranged at the top of the curtain body, and a balancing weight is arranged at the bottom of the curtain body; the push-pull positioning device is arranged on the fixed plate, the fixed plate is provided with a pair of wire guiding wheels, and the wire guiding wheels are symmetrically arranged on two sides of the push-pull positioning device; the wire guide wheel comprises a support and a pulley, a wire rope is wound around the pulley, a shaft is arranged on the support, the pulley is rotatably connected with the shaft, and the support is hinged with the fixed plate. The wire guide wheel can swing along with the wire rope to realize the wire at any angle, so that the paying-off and the taking-up of the driving wire winding wheel and the driven wire winding wheel are not influenced by the angle.

The utility model has the advantages that: 1. the cord is not exposed, so that the curtain body is simple in appearance, and potential safety hazards are avoided. 2. The elasticity of the spiral spring is balanced with the self weight of the curtain body, so that the curtain body can stay at any desired position. 3. The diameter of the winding post of the driving wheel is larger than that of the winding post of the driven wheel, and the restoring force of the volute spiral spring is gradually reduced along with the volute spiral spring screwed into the driving wheel, so that the curtain body is prevented from automatically rising due to overlarge force at the tail part of the volute spiral spring in the driven wheel; and the volute spiral spring is reversely coiled into the driving wheel, so that the volute spiral spring keeps restoring force, and the curtain body is prevented from being locked in lifting or automatically descending.

Drawings

Figure 1 is a perspective view of a drive wheel in one embodiment of the present invention.

Fig. 2 is a bottom view of the drive wheel in one embodiment of the present invention.

Figure 3 is a front view of a drive wheel in one embodiment of the present invention.

FIG. 4 is a perspective view of a driven wheel gear assembly and retainer ring assembly in one embodiment of the present invention.

FIG. 5 is a bottom view of the driven wheel gear assembly in one embodiment of the present invention.

FIG. 6 is a front view of a driven wheel gear assembly and retainer ring assembly in one embodiment of the present invention.

Fig. 7 is a perspective view of an active reel in accordance with one embodiment of the present invention.

Fig. 8 is a bottom view of an active reel in accordance with one embodiment of the present invention.

Fig. 9 is a cross-sectional view of an active reel in accordance with one embodiment of the present invention.

FIG. 10 is a schematic view of a wrap spring head hook in accordance with an embodiment of the present invention.

FIG. 11 is a top view of an upper plate of the mounting box in one embodiment of the invention.

Fig. 12 is a top view of a lower plate of the mounting box in one embodiment of the invention.

Fig. 13 is a cross-sectional view of a lower plate of the mounting box in one embodiment of the invention.

FIG. 14 is a schematic view of a curtain in one embodiment of the invention.

Description of the symbols:

a driving wheel 1; a driver gear 101; a drive wheel winding post 102; a positioning sleeve 1021; a winding sleeve 1022; the connecting rib 1023; a driving wheel retainer ring 103; a socket 104;

a driven wheel 2; a driven wheel gear assembly 201; driven wheel gear 2011; a locating sleeve 2012; a driven wheel retainer ring assembly 202; an inner sleeve 2021; an outer sleeve 2022; a retainer ring 2023;

an active reel 3; an active reel gear 301; an active reel spool 302; an active reel retainer ring 303;

a mounting box 4; mounting the cartridge upper plate 401; upper plate screw through holes 4011; an upper plate limiting groove 4012; an upper plate arc 4013; a protrusion 4014; a ring 4015; mounting the lower box plate 402; a lower plate side plate 4021 of the mounting box; a bottom plate 4022 below the mounting box; a positioning post 403; positioning column screw holes 4031; a lower plate restraint slot 404; lower plate arcuate portion 4041; a lug 405; positioning holes 406; a center wire post 407; side conductor posts 408;

a curtain body 5; a fixing plate 501; a weight block 502; a wire guide wheel 503; a bracket 5031; a pulley 5032.

Detailed Description

A lifting type push-pull positioning curtain comprises a curtain body, a mounting box and a push-pull positioning device.

Push-pull positioning device

The push-pull positioning device is used for realizing the retraction and positioning of the curtain body, so that the curtain body can be positioned at any specified position. The push-pull positioning device provides force for pulling the bottom of the curtain body and positioning the curtain body.

In some embodiments, the push-pull positioning device is located within a mounting box, the mounting box comprising a mounting upper plate and a mounting lower plate; the push-pull positioning device comprises a driving reel, a transmission wheel set and a driven reel, positioning columns are arranged on the installation lower plate, and the driving reel, the transmission wheel set and the driven reel respectively correspond to the respective positioning columns.

As shown in fig. 1 to 9, the transmission wheel set includes a driving wheel 1 and a driven wheel 2, a volute spiral spring is accommodated in the driven wheel, and the head end of the volute spiral spring is connected to the driving wheel; a wire rope is respectively wound in the driving reel 3 and the driven reel, one end of the wire rope is fixed on the reel, and the other end of the wire rope is fixed at the bottom of the curtain body; when the driving reel is paid off outwards, the driving wheel winds the volute spiral spring inwards; the direction of the spiral spring winding into the driving wheel is opposite to the direction of the spiral. The direction of the scroll refers to the direction in which the scroll spring is wound using conventional techniques. When the contact surface of the spiral spring and the driven wheel is an inner surface, the contact surface of the spiral spring and the driving wheel is an outer surface.

The lengths of the corresponding ropes of the active reel and the driven reel are the same, and the lengths of the ropes stored in the reels are also the same. Thereby keeping the bottom of the curtain body horizontal and enabling the bottom of the curtain body to be horizontally lifted.

In some embodiments, as shown in fig. 1-9, the driving reel, the driven reel, the driving wheel and the driven wheel are respectively provided with a gear, a winding post and a retainer ring, the gear and the retainer ring are respectively positioned at two ends of the winding post, the four gears are meshed in sequence, and a distance is reserved between the four retainer rings. Therefore, only one end of each wheel (the reel or the transmission wheel) is machined into the gear, so that the machining difficulty is reduced, and the installation direction of the wheel is indicated.

In some embodiments, the driving reel, the driving wheel, the driven wheel and the driven reel are engaged in sequence, the volute spring in a natural state is positioned in the driven wheel, and the direction of the volute spring wound by the driving wheel is the same as the direction of the cord wound by the driving reel; the winding direction of the active reel is the same as that of the driven reel. When the gears are in meshing transmission, the rotation directions of the adjacent gears are opposite. When the driving reel is paid off outwards, the volute spiral spring is wound by the driving wheel in a reverse direction, the volute spiral spring in the driving wheel is in a deformation state, and the dead weight of the curtain body is balanced with the elastic force of the volute spiral spring.

In some embodiments, the length of the spiral spring is greater than the length of the cord wound into the reel. Thus, after the wire is completely released, the scroll spring still has the margin to be coiled in the driven wheel. Therefore, the tail end of the spiral spring and the driven wheel do not need to be fixed, and the spiral spring can be kept in the driven wheel by the aid of the elastic force of the spiral spring.

Driving wheel and driven wheel

The driving wheel and the driven wheel are a pair of rollers for releasing or rolling the spiral spring in the push-pull positioning device, and the spiral spring provides force for positioning the curtain body. In some embodiments, the winding posts of the driving wheel are thicker than the winding posts of the driven wheel. The thicker the winding post of the driving wheel is, the larger the curvature radius of the deformation of the volute spiral spring is. Therefore, when the spiral spring winds into the driving wheel, the curvature radius of the spring in the driving wheel is larger than that of the spring in the driven wheel along with the winding of the spiral spring into the driving wheel, namely, the spiral spring winds into the driving wheel more, the tendency of the spring to recover and deform is weaker, and the problem that the curtain body automatically rises due to the fact that the elastic force of the tail portion of the spring is too large is avoided.

In some embodiments, the diameter of the winding post of the driven wheel overlapped with the spiral spring is equal to the diameter of the winding post of the driving wheel after the spiral spring is installed in place in the driven wheel. Equal diameters means that the difference between the two diameters is within an allowable error range and not mathematically equal. In this way, when the spiral spring is just wound into the driving wheel, the curvature radius of the spring in the driving wheel is almost equal to that of the spring in the driven wheel, and after all the cords in the reel are discharged, the diameter of the spring in the driving wheel is maximized, and the diameter of the spring in the driven wheel is minimized.

When the volute spiral spring in the follow driving wheel is rolled into the action wheel from the head end in the reverse direction, the diameter of action wheel wrapping post and the diameter of following the driving wheel wrapping post are equal basically, increase along with the number of turns of winding into the spring in the action wheel, the diameter of the volute spiral spring of action wheel is greater than the volute spiral spring diameter from the driving wheel, the curvature radius of the volute spiral spring deformation in the action wheel is bigger and bigger, the moment of torsion that the volute spiral spring provided in the action wheel is more and more littleer, that is to say, the moment of torsion that the volute spiral spring outer lane. Correspondingly, the more the number of turns of the spiral spring of the driving wheel is, the more the cord is released outwards, the lower the position of the curtain body is, and the lower the weight of the curtain body supported by the cord is (because the curtain body is unfolded along with the descending of the bottom of the curtain body and the more the part supported by the curtain body is, and when the curtain body is folded, the folded curtain body cannot be supported by the curtain body and needs to be supported by the cord, so that the more the curtain body is unfolded, the smaller the stress of the cord is, the more the curtain body is folded, and the larger the stress of the cord is). The more the spiral spring of the driven wheel is wound into the driving wheel, the less the torque provided by the spiral spring is, so that the curtain body is unfolded, the stress of the thread rope is reduced, and the phenomenon that the curtain body automatically ascends due to the fact that the curtain body cannot be self-locked in an unfolded state is avoided; meanwhile, the curtain body is effectively supported when in a furled state, and the phenomenon that the curtain body automatically descends is avoided.

In some embodiments, the head end of the volute spiral spring is provided with a hook, the winding post of the driving wheel is provided with a socket, and the hook is hung in the socket. In some embodiments, as shown in fig. 1 to 3, the winding post 102 of the driving wheel includes a positioning sleeve 1021 and a winding sleeve 1022, the positioning sleeve 1021 and the winding sleeve 1022 are coaxial and spaced apart, a radial connecting rib 1023 is disposed between the positioning sleeve 1021 and the winding sleeve 1022, and the socket 104 penetrates through the winding sleeve. The hook is inserted into the socket and hooks the winding sleeve to realize the connection of the volute spiral spring and the driving wheel.

The radial both ends of socket are the slope. The slope guides the spiral spring to smoothly wind the spring into the winding post. The diameter of the winding sleeve is the diameter of the winding column of the driving wheel. In some embodiments, the driven wheel includes a gear assembly 201 and a retainer ring assembly 203, the gear assembly is composed of a gear 2011 and a locating sleeve 2012, the gear 2011 is concentric with and fixed to the locating sleeve 2012; the retainer ring assembly 203 consists of an inner sleeve 2031, an outer sleeve 2032 and a retainer ring 2033 which are coaxial, wherein an interval is arranged between the inner sleeve and the outer sleeve, a radial connecting plate is arranged between the inner sleeve and the outer sleeve, and the positioning sleeve is inserted into the inner sleeve and is in clearance fit with the inner sleeve; the diameter of the outer sleeve is used as the diameter of the winding post of the driven wheel. The gear assembly and the check ring assembly are detachable, a volute spiral spring product can be conveniently sleeved on the outer sleeve, the positioning sleeve is inserted into the inner sleeve, and the gear assembly and the check ring assembly are combined into a driven wheel with a volute spiral spring inside. The driven wheel is detachable, so that the finished product volute spiral spring is convenient to use, and the cost is reduced.

As shown in fig. 10, the spiral spring is made by rolling a spring belt with equal width into a cylinder through a conventional process, and a hook is arranged at the head end of the spring belt and is in a T shape. The radius of curvature of the spring band from the leading end to the trailing end is equal. Only need purchase current volute spiral spring direct use can, need not redesign and preparation volute spiral spring and be used for the utility model discloses, reduce the utility model discloses a manufacturing cost.

Mounting upper plate and mounting lower plate

The mounting upper plate and the mounting lower plate are parts of the mounting box, and after the mounting upper plate and the mounting lower plate are assembled, a space for accommodating the two reels, the driving wheel and the driven wheel is formed.

In some embodiments, as shown in FIGS. 11-14, the mounting upper plate 401 and the mounting lower plate 402 form a mounting case 4 that houses a driving reel, a driving wheel set, and a driven reel; the mounting box is provided with an outlet allowing the appearance of a cord; the mounting upper plate 401 has screw through holes 4011 corresponding to the positioning posts 403 of the mounting lower plate one to one, and the positioning posts 403 are provided with screw holes 4031 aligned with the screw through holes 4011. After the screw penetrates through the screw through hole and is screwed into the screw hole, the mounting upper plate is fixed and the mounting lower plate is fixed. The mounting upper plate and the mounting lower plate limit the axial positions of the two reels and the transmission wheel set, so that the four gears are kept meshed.

In some embodiments, as shown in fig. 12, the mounting lower plate is provided with a lower plate retaining groove 404, the lower plate retaining groove 404 having a lower plate arc portion 4041 in one-to-one correspondence with each gear, each lower plate arc portion 4041 being clearance fit with a corresponding gear. The lower plate limiting groove is matched with the gear and is larger than the size of the retainer ring, so that an indicating function is achieved, and the gear is provided with the lower mounting plate. In some embodiments, the lower plate restraint slot is aligned with the mounting lower plate, and each lower plate arc of the lower plate restraint slot is coaxial with its corresponding locating post. After the diameter of the gear and the gap between the gear and the lower plate limiting groove are determined, the position and the size of the lower plate limiting groove can be determined; and then concentric positioning columns are arranged at the circle centers of the arc parts of the lower plates of the lower plate limiting grooves, so that the positions of the positioning columns are determined. Each positioning column, wheel and corresponding lower plate arc part are coaxial.

In some embodiments, as shown in fig. 12, the lower mounting plate includes a bottom plate 4022 and two opposite side plates 4021, the lower plate limiting groove 404 is formed in the bottom plate 4022, and the upper mounting plate 401 is opposite to the bottom plate 4022. The upper plate and the lower plate are arranged to form a rectangular box body, and two ends of the box body are not provided with closed openings to serve as wire outlets.

In some embodiments, as shown in fig. 12 and 13, two lugs 405 are provided on the mounting lower plate, the lugs 405 are located at the emerging port end, and screw holes are provided on the lugs 405. The screw passes through the screw hole on the lug, thereby fixing the push-pull positioning device on the curtain body.

In some embodiments, as shown in fig. 12, a set of positioning holes is formed around each positioning column, the set of positioning holes is disposed on the bottom plate, each set of positioning holes 406 forms a positive multi-deformation, and the positioning column 403 is concentric with the positive multi-deformation formed by the set of positioning holes. The positioning columns and the installation lower plate are integrally molded by injection, and each positioning hole group can be used as a demolding hole during injection molding, so that each positioning column can be horizontally moved to demold, and the verticality of the positioning column and the bottom plate is kept.

In some embodiments, as shown in fig. 12, there are four positioning holes 406 per positioning hole set, wherein a pair of diagonal positioning holes 406 is collinear with all positioning posts 403. The four positioning holes enable the periphery of the positioning column to be evenly stressed, and the perpendicularity can be guaranteed. The more vertical the positioning column is to the bottom plate, the smaller the impact between the wire guide wheel and the positioning column, and between the driving wheel or the driven wheel and the positioning column.

In some embodiments, as shown in fig. 11, the mounting upper plate is provided with an upper plate retainer groove 4012 having an upper plate arc 4013 in one-to-one correspondence with each retainer ring, each upper plate arc 4013 being clearance fit with a corresponding gear; the upper plate retaining grooves 4012 are aligned with the upper plate 401, and each upper plate arc 4013 is coaxial with a corresponding screw through hole 4011. After the diameter of the retainer ring and the gap between the retainer ring and the upper plate limiting groove are determined, the position and the size of the upper plate limiting groove can be determined; and then concentric screw through holes are arranged at the circle center of each upper plate arc part of the upper plate limiting groove, so that the positions of the screw through holes are determined. Each screw through hole, the wheel and the corresponding upper plate arc part are coaxial. And then after the screw through holes are matched with the corresponding positioning columns, the upper plate and the lower plate are installed to realize centering.

In some embodiments, as shown in fig. 11, cylindrical bosses 4014 are provided on the mounting upper plate, one boss 4014 corresponding to each screw through hole 4011, and the screw through holes 4011 are coaxial with the respective bosses 4014; each protrusion is inserted into the corresponding positioning sleeve or the corresponding positioning sleeve, and the protrusion is contacted with the corresponding positioning column or has a gap; or, the positioning column is provided with a groove allowing the protrusion to be inserted, and the height of the groove is matched with the protrusion. The protrusion and the positioning column simultaneously position the axial position of the winding column, and simultaneously lock the relative position between the upper mounting plate and the lower mounting plate; in addition, the bulges protect the screws, the driving reel, the driven reel, the driving wheel and the driven wheel are not in direct contact with the screws, and the bulges isolate the vibration impact when the driving reel, the driven reel, the driving wheel and the driven wheel rotate.

Conductor pole

The wire column is a structure located on the mounting lower plate for tensioning and positioning the outgoing wire.

In some embodiments, as shown in fig. 12, the mounting lower plate is provided with a pair of center wire posts 407 and at least a pair of side wire posts 408; the two center lead posts 407 are collinear with the positioning posts 403, and the two side lead posts 408 are offset from the straight line of the positioning posts 403; the two center conductor posts 407 are symmetrically arranged, and the two side conductor posts 408 are symmetrically arranged; the thread rope is led out from the outlet by sequentially bypassing the side conductor column and the central conductor column. The side guide wire column tensions the wire rope, and the central guide wire column makes the led-out wire rope and the centers of the two reels collinear, so that the smooth wire rope outgoing is facilitated.

In some embodiments, as shown in FIG. 12, there are two pairs of side posts 408, and the two pairs of side posts 408 are symmetrical about a line where the alignment post 403 is located. The cord is led out from the outlet by sequentially bypassing the two side conductor columns and the central conductor column; or the thread rope is led out from the outlet after bypassing any one side conductor column and the central conductor column; or the cord is led out from the outlet after sequentially passing around the two side conductor columns, and the central conductor column is tightly propped against the cord between the two side conductor columns. The two wire guide columns are beneficial to tensioning the wire rope and eliminating the change of the direction of the wire rope caused by the change of the diameter of the wire rope when the wire winding wheel is used for winding and unwinding the wire rope.

In some embodiments, as shown in fig. 11 and 12, the center wire post 407 has a threaded hole, and the mounting plate has a screw through hole aligned with the center wire post, through which the screw is screwed into the threaded hole of the center wire post. Therefore, the two sides of the upper mounting plate and the lower mounting plate are fixed relatively, the central guide wire column is prevented from being deformed and displaced under the pressure of the thread rope, the consistency of the paying-off of the two reels is kept, and the bottom of the curtain is kept horizontal all the time. In some embodiments, the center wire post is located outside the lower plate limiting groove, and a gap is formed between the center wire post and the lower plate limiting groove.

In some embodiments, as shown in fig. 11, the mounting upper plate 401 has a circular ring 4014 that mates with the center wire post 407, the center wire post 407 is inserted into the circular ring 4015, and the screw through holes are coaxial with the circular ring. The ring locks the position of the center conductor post to avoid direct impact of vibration on the screw.

Active reel and driven reel

The active reel and the driven reel are reels that wind and release a cord that pulls the bottom of the curtain. The active reel and the driven reel are relatively speaking, and since the active reel, the driving wheel, the driven wheel and the driven reel are driven by gear engagement, when any one reel receives external force, the other reel follows the rotation. Thus, a master reel is a wheel that is subjected to external forces, while the other reel is a slave reel. That is, the driving and driven wheels are used to distinguish between the two wheels depending on the actual force.

In some embodiments, the winding post of the active reel and the winding post of the driven reel are both conical, and the end of the winding post connected to the gear is a large end and the other end is a small end. When the curtain body moves upwards and the ropes are recovered into the reels, the ropes of the two reels are displaced from the large end to the small end, so that the driving reels and the driven reels can be synchronously wound up in the same length, and the bottom of the curtain body is always kept horizontal.

Wire guide wheel

The wire guiding wheel is arranged outside the push-pull positioning device. The thread ropes led out from the two ends of the push-pull positioning device respectively pass through the corresponding thread guide wheels and then are connected with the bottom of the curtain body.

In some embodiments, as shown in fig. 14, a fixing plate 501 is provided at the top of the curtain body 5, and a weight block 502 is provided at the bottom of the curtain body; the push-pull positioning device is arranged on a fixing plate 501, the fixing plate 501 is provided with a pair of wire guiding wheels 503, and the wire guiding wheels are symmetrically arranged on two sides of the push-pull positioning device; the wire guide wheel comprises a bracket 5031 and a pulley 5032, the wire rope passes around the pulley, the bracket is provided with a shaft, the pulley is rotatably connected with the shaft, and the bracket is hinged with the fixed plate. The wire guide wheel can swing along with the wire rope to realize the wire at any angle, so that the paying-off and the taking-up of the driving wire winding wheel and the driven wire winding wheel are not influenced by the angle.

The balancing weight is wrapped in the curtain body, the curtain body is provided with a wire channel, and the cotton rope penetrates through the wire channel to be fixed with the balancing weight. The wire channel is composed of a wire guide cylinder and a plurality of wire guide rings, and the wire guide cylinder wraps the wire guide rings. The presence of the conductor channel defines the swinging area of the cord and encloses the cord for aesthetic and protective purposes.

The utility model shown and described herein may be implemented in the absence of any element, limitation, or limitations specifically disclosed herein. The terms and expressions which have been employed are used as terms of description and not of limitation, and there is no intention in the use of such terms and expressions of excluding any equivalents of the features shown and described or portions thereof, and it is recognized that various modifications are possible within the scope of the invention. It should therefore be understood that although the present invention has been specifically disclosed by various embodiments and optional features, modification and variation of the concepts herein described may be resorted to by those skilled in the art, and that such modifications and variations are considered to be within the scope of this invention as defined by the appended claims.

The contents of the articles, patents, patent applications, and all other documents and electronically available information described or cited herein are hereby incorporated by reference in their entirety to the same extent as if each individual publication was specifically and individually indicated to be incorporated by reference. Applicants reserve the right to incorporate into this application any and all materials and information from any such articles, patents, patent applications, or other documents.

Claims (9)

1. A lifting type push-pull positioning roller shutter with a demoulding hole comprises a shutter body, a mounting box and a push-pull positioning device; the method is characterized in that: the mounting box is provided with positioning columns, a positioning hole group is arranged around each positioning column and arranged on a bottom plate of the mounting box, each positioning hole group forms one positive multi-deformation, and the positioning columns and the positive multi-deformation formed by the positioning hole groups are concentric.

2. The lift type push-pull positioning roller shutter with a stripping hole as claimed in claim 1, wherein: each positioning hole group is provided with four positioning holes, wherein a pair of diagonal positioning holes are collinear with all positioning columns.

3. The lift type push-pull positioning roller shutter with a stripping hole as claimed in claim 1, wherein: the mounting box comprises an upper mounting plate and a lower mounting plate, and the lower mounting plate comprises a bottom plate and two opposite side plates; the push-pull positioning device comprises a driving reel, a transmission wheel set and a driven reel, and the driving reel, the transmission wheel set and the driven reel respectively correspond to the respective positioning columns; the transmission wheel set comprises a driving wheel and a driven wheel, a volute spiral spring is contained in the driven wheel, and the head end of the volute spiral spring is connected with the driving wheel; a cord is respectively wound in the driving reel and the driven reel, one end of the cord is fixed on the reel, and the other end of the cord is fixed at the bottom of the curtain body; when the driving reel is paid off outwards, the driving wheel winds the volute spiral spring inwards; the direction of the spiral spring winding into the driving wheel is opposite to the direction of the spiral.

4. The lift type push-pull positioning roller shutter with a stripping hole as claimed in claim 1, wherein: the installation hypoplastron is equipped with hypoplastron spacing groove, and the hypoplastron spacing groove has the hypoplastron arc portion with every gear one-to-one, and every hypoplastron arc portion and the gear clearance fit that corresponds.

5. The lift type push-pull positioning roller shutter with a stripping hole as claimed in claim 1, wherein: the installation hypoplastron includes bottom plate and two relative curb plates, and the bottom plate is located to the hypoplastron spacing groove, and the installation upper plate is relative with the bottom plate.

6. The lift type push-pull positioning roller shutter with a stripping hole as claimed in claim 1, wherein: the mounting upper plate is provided with an upper plate limiting groove, the upper plate limiting groove is provided with upper plate arc parts which correspond to the retainer rings one by one, and each upper plate arc part is in clearance fit with the corresponding gear; the upper plate limiting groove is aligned with the upper plate, and each upper plate arc-shaped part is coaxial with the corresponding screw through hole.

7. The lift type push-pull positioning roller shutter with a stripping hole as claimed in claim 1, wherein: the mounting upper plate is provided with cylindrical bulges, each screw through hole corresponds to one bulge, and the screw through holes are coaxial with the respective bulges; each protrusion is inserted into the corresponding positioning sleeve or the corresponding positioning sleeve, and the protrusion is contacted with the corresponding positioning column or has a gap; or, the positioning column is provided with a groove allowing the protrusion to be inserted, and the height of the groove is matched with the protrusion.

8. The lift type push-pull positioning roller shutter with a stripping hole as claimed in claim 1, wherein: the mounting lower plate is provided with a pair of central conductor columns and at least a pair of side conductor columns; the two center lead posts are collinear with the positioning post, and the two side lead posts deviate from the straight line where the positioning post is located; the two central conductor columns are symmetrically arranged, and the two side conductor columns are symmetrically arranged; the thread rope is led out from the outlet by sequentially bypassing the side conductor column and the central conductor column.

9. The lift type push-pull positioning roller shutter with a stripping hole of claim 8, wherein: two pairs of side guide posts are arranged, and the two pairs of side guide posts are symmetrical about the straight line where the positioning posts are located; the cord is led out from the outlet by sequentially bypassing the two side conductor columns and the central conductor column; or the thread rope is led out from the outlet after bypassing any one side conductor column and the central conductor column; or the cord is led out from the outlet after sequentially passing around the two side conductor columns, and the central conductor column is tightly propped against the cord between the two side conductor columns.