CN203802215U - Pull cord retractor - Google Patents

Abstract

A pull rope winding device comprises a shell, a wire winding wheel, a driving piece and a control piece. The shell is provided with an accommodating space, an opening and a through hole, the opening and the through hole are communicated with the accommodating space, and a rope body is inserted into the accommodating space from the outside of the shell through the through hole; the winding wheel is arranged in the accommodating space, is connected with the rope body and can rotate relative to the shell to wind or release the rope body; the driving piece is arranged in the accommodating space and connected with the winding wheel, and can drive the winding wheel to rotate relative to the shell; the control part is partially positioned at the opening, the other part of the control part is positioned in the containing space and is abutted against the winding wheel to limit the winding wheel to rotate, and when the control part is pressed, the control part is separated from the winding wheel, so that the winding wheel can rotate freely.

Description

Pull cord retractor

technical field

The utility model is related to curtain control; in particular, it refers to a pull cord retracting device.

Background technique

Common curtains are used as shading structures such as blades or curtains, but no matter what type, most of them use pull cords to control the upward folding or downward unfolding of the aforementioned shading structure.

However, under normal usage conditions, the drawstring is usually exposed outside the curtain, which is not only easy to be damaged by wind and sun, but also prone to entanglement of the drawstring, making it difficult to pull.

In addition, when the length of the exposed pull cord is too long, people will often trip over it. What's more, the exposed rope is more likely to accidentally entangle children and cause safety accidents.

Utility model content

In view of this, the purpose of the present utility model is to provide a pull cord retracting device, which can retract the exposed pull cord, so as to avoid the occurrence of entanglement or safety accident caused by the exposed cord.

In order to achieve the above purpose, the pull cord retracting device provided by the utility model is used for retracting a rope body, and includes a casing, a winding wheel, a driving part and a control part. Wherein, the casing has an accommodating space, an opening and a through hole, and the opening and the through hole are all communicated with the accommodating space, and the through hole is used for the rope body to pass through from the outside of the casing to the accommodating space; the winding wheel is set in the accommodating space, and is connected with the rope body, and can be rotated relative to the casing to retract or release the rope body; the driving member is set in the accommodating space , and is connected with the reel to drive the reel to rotate relative to the housing; the control part is located at the opening, and the other part is located in the accommodating space and abuts against the reel to limit the reel The spool spins, and when the control is pressed, the control separates from the spool, allowing the spool to spin freely.

According to the above idea, the reel has a first locking part, and the control part has a pressing part and a second locking part, and the second locking part is located in the accommodating space and is connected with the first locking part. The locking part abuts to limit the rotation of the reel. When the pressing part of the control part is pressed, the second locking part is separated from the first locking part, so that the winding wheel can rotate freely.

According to the above idea, the pressing part is located at the opening.

According to the above idea, the control part further includes an operating part, the pressing part is adjacent to the opening, and the operating part is arranged at the opening; the operating part can move back and forth along the opening to press against the pressing part, so that the second The locking part is separated from the first locking part.

According to the above idea, the first locking part is a plurality of protrusions arranged in a ring shape, and the protrusions are arranged around the winding wheel around the center of the winding wheel; the second locking part and the The pressing parts are respectively located at two opposite ends of the control part, and the second locking part is at least one protruding tooth, and the shape of the protruding tooth corresponds to the gap between two adjacent protruding blocks.

According to the above idea, the first locking part is a plurality of concave parts arranged in a ring shape, and the concave parts are arranged around the winding wheel around the center of the winding wheel; the second locking part and the The pressing parts are respectively located at two opposite ends of the control part, and the second latching part is at least one protrusion whose shape corresponds to the recessed part.

According to the above idea, the casing has a shaft frame, and the control member has a pivot pivotally connected with the shaft frame, so that when the control member is pressed, it pivots with the pivot shaft as a fulcrum, so that the second latch The part is separated from the first locking part.

According to the above idea, an elastic member is arranged on the control member and abuts against the casing to provide an elastic force to make the control member abut against the reel.

According to the above idea, the elastic member has a resisting plate and at least one pressing arm, the resisting plate is arranged on the control member, and the pressing arm abuts against the casing.

According to the above idea, the reel has a positioning hole, the casing has a positioning pin, and the positioning pin is passed through the positioning hole.

According to the above idea, a fixing block is arranged on the positioning pin, and when the positioning pin is passed through the positioning hole, the fixing block is pressed against the surface of the reel.

According to the above idea, one end of the positioning pin has a notch, and the width of the notch can be reduced by squeezing the end to change the outer diameter of the end so that the fixing block can pass through the positioning hole.

According to the above concept, the opening of the housing is closer to the through hole than the center of the housing.

Therefore, through the design of the above-mentioned draw cord retracting device, the exposed draw cord can be effectively retracted, so as to prevent the cord from being exposed and tangled or causing safety accidents.

Description of drawings

In order to illustrate the utility model more clearly, the preferred embodiments are described in detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is the perspective view of the first preferred embodiment of the utility model;

Fig. 2 is an exploded view of the first preferred embodiment of the utility model;

Fig. 3 is a perspective view showing that the fixed block is pressed against the reel;

Fig. 4 is a cross-sectional view, revealing that the first locking part is in contact with the second locking part;

Fig. 5 is a sectional view, revealing that the first locking part is separated from the second locking part;

Fig. 6 is an exploded view of the second preferred embodiment of the utility model;

Fig. 7 is an exploded view of the second preferred embodiment of the present invention at another viewing angle;

Fig. 8 is an exploded view of a third preferred embodiment of the present invention;

Fig. 9 is a cross-sectional view of a third preferred embodiment of the present invention;

Fig. 10 is an exploded view of a fourth preferred embodiment of the present utility model;

Fig. 11 is an exploded view of the fourth preferred embodiment of the present invention at another viewing angle;

Fig. 12 is a cross-sectional view of a fourth preferred embodiment of the present invention.

Detailed ways

Please refer to Fig. 1 and Fig. 2, the pull cord retracting device of the first preferred embodiment of the present invention is used for retracting and operating a curtain (not shown) rope body 100, and includes a housing 10, A driving part 20 , a winding wheel 30 , a control part 40 and an elastic part 50 . in:

The housing 10 includes an upper shell 12 and a lower shell 14 . The surface of the upper case 12 has an opening 121, and one end of the upper case 12 has an upper notch 122; both the opening 121 and the upper notch 122 communicate with the interior of the upper case 12, and the opening 121 is in an eccentric position Design, more specifically, the opening 121 is closer to the upper notch 122 than the center of the upper case 12 and deviates from the center of the upper case 12 . In addition, a shaft frame 123 is formed on the inner side of the upper shell 12 adjacent to the opening 121 .

The lower case 14 has a gap 141 communicating with its interior, and the inner side of the lower case 14 has a positioning pin 142 near the center, and the positioning pin 142 is provided with two fixed blocks 143 arranged oppositely, and the two fixed blocks The size of 143 gradually expands from the direction of the top end of the positioning pin 142 to the direction of the bottom end of the positioning pin 142 . In addition, the top of the positioning pin 142 has a notch 144 located between the two fixing blocks 143 .

The driving part 20 in this embodiment is represented by a scroll spring, which can also be a tightly wound spring with elastic recovery force or other materials. The driving part 20 is arranged on the reel 30 . The wheel surface of the reel 30 is connected to the rope body 100, and the center position of the reel 30 has a positioning hole 32 for the positioning pin 142 to pass through, and the assembler wants to install the reel 30 When the lower shell 14 is reached, the top of the positioning pin 142 can be squeezed with force to reduce the width of the gap 144, and then reduce the outer diameter of the top of the positioning pin 142, so that the two fixed blocks 143 on the positioning pin 142 can be Pass through the positioning hole 32, so that the positioning pin 142 is passed through the positioning hole 32, the driving member 20 is located between the reel 30 and the lower shell 14, and the reel 30 can use the positioning pin 142 Rotate relative to the lower shell 14 at the center to retract or release the rope body 100, and at this time, the two fixed blocks 143 will be pressed against the surface of the reel 30 as shown in Figure 3, so as to avoid the The reel 30 comes off from the lower case 14 . In addition, the reel 30 has a first engaging portion 34. In this embodiment, the first engaging portion 34 is a gear ring formed by a plurality of projections surrounding the positioning hole 32. , but not limited thereto, it can also be other structural designs with fastening effect.

The control member 40 has a pressing portion 42 , a second engaging portion 44 and a pivot 46 . The pressing portion 42 and the second locking portion 44 are respectively located at opposite ends of the control member 40 , and the pivot 46 is located between the pressing portion 42 and the second locking portion 44 . During assembly, the pivot 46 is pivotally connected to the shaft bracket 122 of the upper case 12 , so that the control member 40 can pivot relative to the upper case 12 with the pivot 46 as a fulcrum. The pressing portion 42 is disposed at the opening 121 and exposed outside the upper case 12 . The second engaging portion 44 is located inside the upper case 12 , and has a shaft 441 on the second engaging portion 44 . In this embodiment, the second engaging portion 44 is a tooth row formed by a plurality of protruding teeth, and the shape of the protruding teeth corresponds to the shape of the gap between two adjacent protrusions of the first engaging portion, but its The structure is not limited thereto, and it can also be modified to other structural designs that have a locking effect corresponding to other shapes of the first latching portion.

In this embodiment, the elastic member 50 is represented by an elastic piece, and the elastic member 50 has a resisting plate 52 and two pressing arms 54 respectively arranged on opposite sides of the resisting plate 52, and the resisting plate 52 is A hole 521 is connected to the shaft 441 , so that the elastic member 50 is disposed on the control member 40 and located between the control member 40 and the upper case 12 .

When the assembler assembles the upper shell 12 and the lower shell 14, the inside of the upper shell 12 and the lower shell 14 will jointly form an accommodating space, and the upper notch 122 and the lower notch 141 will combine to form a perforation and The accommodating space is communicated, and an assembler can use the through hole to pass the rope body 100 out of the housing 10 from the accommodating space.

In addition, please refer to FIG. 4 , after the upper case 12 and the lower case 14 are assembled, the two pressing arms 54 of the elastic member 50 contact the inner surface of the upper case 12 to provide an elastic force to make the control member 30 The second engaging portion 44 presses toward the direction of the reel 30 , so that the second engaging portion 44 abuts against the first engaging portion 34 to restrict the reel 30 from rotating. Wherein, the elastic member 50 can also be composed of other objects or materials with elastic resilience, such as: compression springs, steel sheets or plastics, and can be integrally formed with the upper shell 12 or the control member 40, and can also provide the control The elastic force of the member 30 pushes the second locking portion 44 against the first locking portion 34 .

Then, please refer to FIG. 5 , when the user operates the pull cord retracting device and presses the pressing portion 42, the control member 40 will pivot with the pivot 46 as the fulcrum, so that the second locking portion 44 and the When the first locking portion 34 on the reel 30 is separated, the reel 30 can rotate relative to the housing 10 around the positioning pin 142; The rope body 100 is released. In this embodiment, the pull cord retracting device is pulled down while pressing the pressing part 42, so that it moves toward the top away from the curtain. At this time, the upper end of the rope body 100 is restricted by the curtain to pull the reel 30 to rotate, and at the same time release The rope body 100 originally wound on the reel 30 makes the driving part 20 shrink inward; if the pull cord retracting device is moved up toward the top of the curtain, the driving part 20 will be in a state of natural expansion and drive the reel The wheel 30 rotates to wind the rope body 100 on the winding wheel 30; and through the structural design of the above-mentioned winding wheel 30 winding the rope body 100, it is difficult for the rope body 100 to overlap when the user operates. However, in practice, the states of retraction and rapid expansion of the driving member 20 can be interchanged depending on assembly requirements, so that when the rope body 100 is released, it is expanded, and when the rope body 100 is retracted, it is retracted.

It is worth mentioning that, in this embodiment, the first locking part 34 provided on the reel 30 is a gear ring, therefore, when the pressing part 42 is released at any position, the second locking part 44 Both can correspond to the first locking portion 34 to limit the rotation of the reel 30, so that the operation and positioning of the pull cord retracting device are more arbitrary and precise.

In addition, through the eccentric design of the setting position of the opening 121, when the user holds the casing 10 of the pull cord retracting device with the user's hand, the position of the pressing part 42 can be relatively close to the user's thumb, so that the user can use When the user presses the pressing portion 42, it can be more convenient and labor-saving, and has the advantage of conforming to ergonomics.

In addition to the above structure, please refer to Fig. 6 and Fig. 7, the pull cord retracting device of the second preferred embodiment of the present invention is different from the previous embodiment in that the first locking parts 64 are arranged in a ring A plurality of depressions, the depressions are set around the winding wheel 60 with the wheel center of the winding wheel 60 as the center, and in this embodiment, these depressions are respectively a hole, but they can also be grooves or is another concave structure. The second latching portion 66 is a plurality of protrusions, and its shape corresponds to the above-mentioned concave portion. In this way, through the above-mentioned structural design, it is also possible to combine the first latching portion 64 and the second latching portion. 66 reaches the purpose that limits this reel 60 to rotate.

In addition, please refer to Fig. 8 and Fig. 9, which is the drawstring retracting device of the third preferred embodiment of the present invention. In addition to the latch portion 74, an operating portion 76 is provided at the opening 781 and protrudes outside the housing 78. The operating portion 76 can move back and forth along the opening 781, and its cross section is in the shape of an “匸” shape, with an opening on one side. The pressing portion 72 can be pressed against or released through its opening. In this way, when the user operates, he can push the operating part 76 to press the pressing part 72 , so that the degree of pressing is more precise, so as to avoid damage to the control part 70 caused by excessive pressing of the control part 70 .

In addition, please refer to Fig. 10 to Fig. 12, the draw cord retracting device of the fourth preferred embodiment of the present utility model, its first locking part 821 is a plurality of recessed parts arranged in a ring shape, which is different from the previous embodiment The difference is that the first locking part 821 faces the lower case 94, and the pressing part 841 and the second locking part 842 of the control part 84 are designed as different components; and a latch protrudes from the bottom surface of the pressing part 841. 843 is set in the positioning hole 822 of the reel 82, and is connected with the first locking portion 821, and also makes the second locking portion 842 and the pressing portion 841 respectively located on opposite sides of the control member 84. end. The elastic member 96 in this embodiment is represented by a spring, which can also be made of elastic plastic or other elastic materials. It is located between the second locking part 842 and the lower shell 94, and in this embodiment The second latching portion 842 in the example has a plurality of protruding pillars arranged in a ring shape, the shape of which corresponds to the above-mentioned concave portion. In this way, when the user presses the pressing portion 841, the protrusion of the second locking portion 842 is separated from the concave portion of the first locking portion 821, so that the reel 82 can be centered on the pin 843 to face the shell. The body 90 rotates; when the user releases the pressing part 841, the protruding column of the second locking part 842 is pushed by the elastic force of the elastic part 96, and combines with the concave part of the first locking part 821 to achieve The purpose of restricting the rotation of its reel.

Through the above-mentioned structural design, after the user finishes operating the curtain, the user can wind up the rope body 100 exposed outside the curtain in the drawstring retracting device, and adjust the height of the end of the exposed rope body 100 to prevent children from touching the rope body 100 and cause accidents; in addition, winding the rope body 100 in the pull rope retracting device is not only more beautiful, but also avoids the embrittlement of the rope body due to exposure to the sun, and prevents the rope body from being damaged when the user operates it. 100 overlap; in addition, the first locking part on the winding wheel is arranged in a ring shape, so that the second locking part can be fitted with the first locking part at any position to limit the rotation of the winding wheel , to achieve the effect of stopping immediately. The above descriptions are only preferred feasible embodiments of the utility model, and any equivalent changes made by applying the specification of the utility model and the scope of the patent application should be included in the scope of the claims of the utility model.

Claims (13)

1. A pull cord retracting device for retracting a rope body, characterized in that, and includes: A casing has an accommodating space, an opening and a perforation, and the opening and the perforation are both communicated with the accommodating space, and the perforation is used for the rope body to pass through the accommodating space from the outside of the casing middle; a winding wheel, arranged in the accommodating space, connected with the rope body, and can rotate relative to the housing to wind up or release the rope body; a driving part is arranged in the accommodating space and connected with the reel to drive the reel to rotate relative to the housing; and A control part is located at the opening, and the other part is located in the accommodating space and abuts against the reel to limit the rotation of the reel, and when the control is pressed, the control and the reel The reel is detached so that the reel can spin freely. 2. The pull cord retracting device according to claim 1, wherein the reel has a first locking part, and the control part has a pressing part and a second locking part, the The second locking part is located in the accommodating space and abuts against the first locking part to limit the rotation of the reel. When the pressing part of the control part is pressed, the second locking part and the first locking part A locking part is separated, so that the reel can rotate freely. 3. The pull cord retracting device according to claim 2, wherein the pressing portion is located at the opening. 4. The pull cord retracting device according to claim 2, wherein the control member further comprises an operating part, the pressing part is adjacent to the opening, and the operating part is disposed at the opening; the operating part can move back and forth along the opening to press against the pressing part, so that the second locking part is separated from the first locking part. 5. The pull cord retracting device according to claim 2, wherein the first engaging portion is a plurality of protrusions arranged in a ring shape, and the protrusions are centered on the center of the winding wheel The center is arranged around the winding wheel; the second locking part and the pressing part are respectively located at opposite ends of the control member, the second locking part is at least one protruding tooth, and the shape of the protruding tooth is similar to that of the adjacent The gap between the two bumps corresponds. 6. The pull cord retracting device according to claim 2, wherein the first engaging portion is a plurality of recesses arranged in a ring, and the center of the reel of the reel is the center of the recesses. The center is arranged around the reel; the second locking part and the pressing part are respectively located at two opposite ends of the control part, and the second locking part is at least one protrusion, and its shape corresponds to the concave part. 7. The pull cord retracting device according to claim 2, wherein the casing has a shaft frame, and the control member has a pivot pivotally connected with the shaft frame, so that when the control member is pressed, Taking the pivot as a fulcrum to pivot, the second locking part is separated from the first locking part. 8. The pull cord retracting device according to claim 1, further comprising an elastic member disposed on the control member and abutting against the housing to provide an elastic force to make the control member and the control member contact with each other. The reel arrives. 9. The pull cord retracting device according to claim 8, wherein the elastic member has a resisting plate and at least one pressing arm, the resisting plate is arranged on the control member, and the pressing arm is connected to the casing Arrived. 10 . The pull cord retracting device as claimed in claim 1 , wherein the reel has a positioning hole, the housing has a positioning pin, and the positioning pin passes through the positioning hole. 11 . 11. The pull cord retracting device according to claim 10, wherein a fixing block is provided on the positioning pin, and when the positioning pin is passed through the positioning hole, the fixing block presses against the winding wire on the surface of the wheel. 12. The pull cord retracting device according to claim 11, wherein one end of the positioning pin has a notch, and the outer diameter of the end can be changed by squeezing the end to reduce the width of the notch, so that The fixing block can pass through the positioning hole. 13. The pull cord retracting device according to claim 1, wherein the opening of the housing is closer to the through hole than the center of the housing.