TW201545687A - Winding stroke limiter structure of curtain - Google Patents

Abstract

A winding stroke limiter structure of curtain comprises: a housing, a gear positioning base, a deceleration gear set, a rotary disc and a stationary base. Through the activation of the synchronous rotation of the housing and the shaft of the curtain unit and the driving operation of the deceleration gear set, the path of the rolling ball of the rotary disc moving between the start end and the stop end is equal to the rotation process of the shaft, such that the rolling ball is abutted against the start end or the stop end of the rail to limit the rotation of the housing so as to limit both extending and winding of the curtain surface thereby increasing structural safety in use. In addition, the structure prevents the curtain unit from being directly knocked by the bottom of the curtain surface during winding process caused by excess release strength of the winding spring, so as to avoid the possibility of damaging or breaking the curtain unit, thereby providing a better service life.

Description

Curtain winding stroke limiter structure

The invention relates to a curtain structure, in particular to a structure of a curtain winding stroke limiter.

The conventionally used curtain comprises a curtain rod, a lifting unit, a curtain cloth attached to the bottom of the curtain rod, and an automatic retracting mechanism disposed in the curtain rod and connected to the curtain cloth; It can be automated when winding curtains. However, since the automatic retracting mechanism does not have any resistance, the automatic retracting mechanism generates a strong momentary retracting force when the curtain is retracted, causing the curtain to be damaged due to excessive impact; In order to prevent the above-mentioned lack, the relevant industry has developed various types of speed reduction mechanisms to prevent the instantaneous upward winding, so as to improve the lack of custom curtains, but all kinds of speed reduction mechanisms on the market must be combined with the automatic retracting mechanism. The assembly connection makes the curtains without the speed reduction mechanism impossible to share, so that the user has to replace the entire set of curtains, in order to improve the lack of instant retraction, resulting in poor versatility and waste of resources.

In view of this, the inventors have been engaged in the manufacturing development and design experience of related products for many years, and after detailed design and careful evaluation of the above objectives, the present invention has finally become practical.

According to the conventional automatic structure of the curtain structure, the automatic retracting mechanism does not have any resistance, so that the automatic retracting mechanism generates a strong moment of retraction when the curtain fabric is wound up. The curtains are damaged by excessive impact and are not practical.

Therefore, the present invention provides a structure of a retracting stroke limiter for a curtain, comprising: a casing, a gear positioning seat, a reduction gear set, a turntable and a fixing seat, wherein the outer casing has a hollow space and a receiving space, and An opening is formed on one side, and a movable tooth column is disposed at a center of the inner wall of the receiving space opposite to the opening, and a plurality of positioning portions are disposed on an outer circumference of the outer casing, and a center of the gear positioning seat has a consistent perforation. At least one limiting shaft is disposed on one side of the through hole, and a positioning slot is recessed in the outer wall. The reduction gear set has a driven gear and at least two interlocking gears, and the driven gear has a non-cylindrical shaft The two interlocking gears are correspondingly arranged on the limiting shaft of the gear positioning seat, so that the two interlocking gears and the driven gears are meshed with each other, and through a linkage gear and the outer casing The toothed cylinder is coupled with the toothed joint, and a turntable has a non-circular hole-shaped perforation, and is matched with a non-cylindrical shaft that passes through the driven gear of the gear positioning seat, and is provided on the outer side. a groove, and a ball is arranged, a fixing seat has an open type chamber, and a positioning rib is arranged on the inner wall to be engaged with the positioning slot of the gear positioning seat, and a track is recessed in the inner wall of the cavity. And the track non-connecting has a starting end and a stopping end, and by the above structure, the cymbal can constitute a structure of the winding stroke limiter of the curtain.

The invention further has a roll inside the curtain unit The travel limiter is driven by the synchronous rotation of the outer casing and the shaft tube and the driving of the reduction gear set, so that the path of the ball of the turntable displaced between the start end and the stop end of the track is equal to the rotation process of the shaft tube, and then the ball is used against the track. The starting end or the stopping end reaches the limit of the rotation of the outer casing, so that the curtain curtain can be unfolded or retracted, which can increase the safety of the structure, and on the other hand, prevent the instantaneous release force of the retracting spring from being too large to make the bottom end of the curtain Strike the curtain unit directly during the winding process to avoid the noise and reduce the doubts of the curtain unit being damaged and damaged, so as to have better service life. Life.

10‧‧‧ Shell

11‧‧‧ accommodating space

12‧‧‧ openings

121‧‧‧Snap Department

122‧‧‧Blocking

13‧‧‧Drive the tooth column

14‧‧‧ Positioning Department

20‧‧‧ Gear positioning seat

21‧‧‧through holes

22‧‧‧Limited shaft

23‧‧‧ card ring groove

24‧‧‧ Positioning slot

30‧‧‧Reduction gear set

31‧‧‧passive gear

311‧‧‧ shaft

32‧‧‧ linkage gear

40‧‧‧ Turntable

41‧‧‧Perforation

42‧‧‧ 容容

43‧‧‧ balls

50‧‧‧ fixed seat

51‧‧ ‧ room

52‧‧‧ positioning ribs

53‧‧‧ Track

531‧‧‧Starting end

532‧‧‧stop

54‧‧‧Clamping convex

55‧‧‧ shaft hole

551‧‧‧through hole

552‧‧‧ pin

60‧‧‧ Curtain unit

61‧‧‧ shaft tube

611‧‧‧Restricted ribs

62‧‧‧ bracket

63‧‧‧Receiving agency

631‧‧‧Center shaft

64‧‧‧ link

Fig. 1 is a perspective view of the present invention.

Fig. 2 is an exploded view of the invention.

Figure 3 is a cross-sectional view of the combination of the present invention.

Fig. 4 is a partial enlarged schematic view and an exploded actuation diagram of the present invention.

Figure 5 is an exploded view of another assembled state of the present invention.

Figure 6 is a schematic view showing the combination of another assembled state of the present invention.

Figure 7 is a cross-sectional view of another perspective of the corresponding Fig. 4 of the present invention.

Figure 8 is a schematic diagram of the operation of the invention.

Fig. 9 is a perspective view showing another perspective of the corresponding Fig. 8 of the present invention.

Fig. 10 is another embodiment of the turntable and the mount of the present invention.

In order to enable your review committee to have a better understanding and understanding of the purpose, features and effects of the present invention, please refer to the following [Simplified Description of the Drawings] for details: First, please refer to Figures 1 and 2 below. The utility model relates to a structure of a curtain winding stroke limiter, comprising: a casing 10, a gear positioning seat 20, a reduction gear set 30, a turntable 40 and a fixing base 50. The outer casing 10 is hollow and has a receiving space 11 And an opening 12 is formed on one side of the opening 12, and the inner wall of the opening 12 has a barbed hook portion 121, and the receiving space 11 is provided with a driving tooth column 13 at the center of the inner wall of the opening 12. The outer periphery of the outer casing 10 is provided with a plurality of positioning portions 14 which are represented by ribs. The center of a gear positioning seat 20 has a continuous through hole 21 and is formed in the through hole. At least one of the second limiting shafts 22 is disposed on the side of the 21, and the outer peripheral edge of the gear positioning seat 20 is recessed with a snap ring groove 23 corresponding to the buckle portion 121 of the outer casing 10, and a positioning recess 24 is recessed in the outer wall. A reduction gear set 30 has a driven gear 31 and at least two interlocking gears 32. The driven gear 31 has a non-cylindrical shaft 311 that fits through the through hole 21 of the gear positioning seat 20, and the two interlocking gears 32 The corresponding group is disposed on the limiting shaft 22 of the gear positioning seat 20, so that the two interlocking gears 32 and the driven gear 31 are meshed with each other, and are coupled with the driven tooth post 13 of the outer casing 10 through a linkage gear 32, a turntable 40 has a non-circular hole-shaped through hole 41, and is engaged with the non-cylindrical shaft 311 of the driven gear 31 passing through the gear positioning seat 20, and is provided with a receiving groove 42 on the outer side surface, and accommodates a ball 43 A fixing seat 50 has an open-type chamber 51, and a positioning rib 52 is disposed on the inner wall to be engaged with the positioning slot 24 of the gear positioning seat 20, and a rail 53 is recessed in the inner wall of the chamber 51. And the track 53 is non-connected with a starting end 531 and a stopping end 532.

For the structure of the structure, please refer to the first and second figures. The reduction gear set 30 is sequentially assembled on the gear positioning seat 20, and is assembled into the accommodating space when the gear positioning seat 20 is combined with the outer casing 10. In the 11th, a linkage gear 32 is coupled with the driven tooth post 13 inside the outer casing 10, so that the reduction gear set 30 and the outer casing 10 are in a synchronous interlocking state, and the gear positioning seat 20 is a snap ring groove on the outer circumference. The buckle portion 121 of the inner wall of the opening 12 of the outer casing 10 is fastened and assembled, and the gear positioning seat 20 and the outer casing 10 are freely rotated. The turntable 40 is sleeved by the non-circular hole-shaped through hole 41 at the center. Through the shaft 311 of the driven gear 31 of the gear positioning seat 20, the turntable 40 can be rotated along with the reduction gear set 30. The fixed seat 50 is disposed outside the gear positioning seat 20 and the turntable 40, and is positioned by the inner wall. The rib 52 is engaged with the positioning slot 24 of the gear positioning seat 20, so that the fixing base 50 and the gear positioning seat 20 form a coupling relationship with each other, and the balls 43 on the turntable 40 are restricted to the rail 53 of the fixing base 50. , the rotation of the turntable 40 is limited to the ball 43 in the track 53 Displacement path According to the above structure, the structure of the winding limiter of the curtain can be completed.

The structure and the assembly of the curtain unit are continued. Referring to FIG. 2, as shown in FIG. 3 and FIG. 4, the winding stroke limiter is matched with the shaft tube 61 of the curtain unit 60, and the outer circumference of the outer casing 10 is ribbed. The positioning portion 14 and the inner wall of the shaft tube 61 are tightly fixed, so that the outer casing 10 and the shaft tube 61 of the curtain unit 60 have a synchronous rotation state, and the outer periphery of the opening 12 of the outer casing 10 is further provided with a blocking projection 122. And the retaining seat 50 is exposed to the outside of the shaft tube 61 through the blocking protrusion 122, and the outer wall surface of the fixing base 50 is convexly provided with a non-cylindrical engaging convex portion 54. The assembly is provided on the bracket 62 of the curtain unit 60, and at the same time, the fixing base 50 is restrained and fixed, whereby the assembly of the winding stroke limiter and the curtain unit 60 can be completed.

The structure and the other assembled state of the curtain unit, as shown in Figures 5 and 6, the take-up stroke limiter is fitted into the shaft tube 61 of the curtain unit 60, and is assembled by the end of the fixing seat 50. The central shaft 631 of the retracting mechanism 63 of the curtain unit 60 is assembled and positioned. The outer wall surface of the fixing base 50 is convexly provided with a sleeve hole 55 to fit through the end of the central shaft 631, and is provided by the sleeve hole 55. The outer wall corresponding to the central shaft 631 is provided with a through hole 551, and a pin 552 is inserted and fixed. The inner wall of the shaft tube 61 is matched with a limiting rib 611, and the positioning portion 14 of the outer periphery of the outer casing 10 is The groove is disposed, thereby correspondingly engaging the limiting rib 611 of the shaft tube 61, so that the outer casing 10 and the shaft tube 61 have a synchronous rotation state, and finally a coupling seat 64 is provided to cooperate with the opening of the shaft tube 61. Further, the joint 64 is connected to the bracket 62, whereby the other assembled state of the take-up stroke limiter and the curtain unit 60 can be completed.

The state in which the structure is actually used, please refer to FIGS. 3 and 4 in conjunction with FIG. 7. When the curtain unit 60 is not used and is in the collapsed state, the curtain bottom end of the curtain unit 60 has a shaft 61 and a shaft tube 61. a predetermined distance, and the ball 43 inside the winding stroke limiter is simultaneously limited to the fixed seat The starting end 531 of the inner rail 53 is configured, so that when the user pulls the curtain surface of the curtain unit 60 and deploys it, the outer casing 10 turns synchronously with the rotation of the shaft tube 61, and the internal rotation of the tooth column 13 is decelerated. The gear set 30 is further driven by the shaft 311 of the driven gear 31 to rotate the turntable 40, so that the ball 43 disposed on one side of the turntable 40 can be displaced along the track 53 of the fixed seat 50. At this time, the gear that is transmitted through the reduction gear set 30 is increased. In comparison, the number of rotations of the turntable 40 is greatly reduced, so that the number of rotations of the shaft tube 61 during the full deployment of the curtain unit 60 is limited to the path of the track 53 of the fixed seat 50 from the starting end 531 to the stopping end 532. Therefore, after the curtain unit 60 is fully deployed, the ball 43 is also displaced by the rotation of the turntable 40 from the starting end 531 of the track 53 to the stopping end 532. At this time, the turntable 40 can no longer be rotated, and the outer casing 10 is restricted from rotating again, so that the curtain cannot be rotated. It is then pulled and unfolded to limit the maximum value of the curtain curtain being deployed.

On the other hand, when the user rewinds and combines the curtain curtains to rotate the shaft tube 61 in the opposite direction, and as shown in FIGS. 8 and 9 at the same time, the outer casing 10 is further rotated by the reverse rotation of the shaft tube 61, and The internal gear rack 13 drives the reduction gear set 30 to rotate the turntable 40 along with the shaft 311 of the driven gear 31, thereby causing the ball 43 to be displaced along the track 53 toward the starting end 531, thereby the roll of the curtain. At the same time, the ball 43 is also displaced in the track 53 so that after the ball 43 is displaced to the starting end 531 of the track 53, the turntable 40 is restricted from rotating again, thereby restricting the operation of the outer casing 10 and the shaft tube 61, and the curtain will be closed. The rewinding is stopped, so that the bottom end of the curtain has an appropriate distance from the curtain unit 60, so that the pressure exerting force of the rewinding spring is prevented from being too large, and the bottom end of the curtain is struck against the curtain unit 60, thereby reducing the probability of damage of the curtain unit 60. In order to have a better service life, on the other hand, the safety of the use of the curtain unit 60 is also increased.

Furthermore, the rail 53 of the inner wall of the fixing base 50 can be formed by spirally winding from the outside to the inside in accordance with the length of the curtain or the configuration of the reduction gear set 30, please also refer to FIG. 10, and The starting end 531 and the stopping end 532 are provided, and the groove 42 of the turntable 40 forms a long groove shape corresponding to the scroll track 53, so that the ball 43 can be stably and accurately displaced in the rail 53 through the receiving groove 42.

According to the structure of the above specific embodiment, the following benefits can be obtained: the present invention further provides a winding stroke limiter inside the curtain unit 60, and the rotation of the outer casing 10 and the shaft tube 61 and the reduction gear set 30 are driven. The path of the ball 43 of the turntable 40 displaced between the start end 531 and the stop end 532 of the track 53 is equal to the rotation process of the shaft tube 61, and then the ball 43 is rotated against the start end 531 or the stop end 532 of the track 53 to reach the outer casing 10 The restriction of the curtain curtain can be restricted or unfolded, which increases the safety of the structure. On the other hand, it prevents the instantaneous release force of the coiled spring from being too large, so that the bottom end of the curtain directly hits the curtain during the winding process. The unit 60 avoids the generation of noise and reduces the doubt that the curtain unit 60 is damaged or damaged, so as to have a better service life.

In summary, the present invention has indeed achieved a breakthrough structural design, and has improved invention content, and at the same time, can achieve industrial utilization and progress, and the present invention is not found in any publication, but also novel, when In accordance with the provisions of the relevant laws and regulations of the Patent Law, the application for invention patents is filed according to law, and the examination authority of the bureau is required to grant legal patent rights.

The above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto; that is, the equivalent variations and modifications made by the scope of the present invention should still belong to the present invention. Within the scope of the patent.

10‧‧‧ Shell

11‧‧‧ accommodating space

12‧‧‧ openings

121‧‧‧Snap Department

122‧‧‧Blocking

13‧‧‧Drive the tooth column

14‧‧‧ Positioning Department

20‧‧‧ Gear positioning seat

21‧‧‧through holes

22‧‧‧Limited shaft

23‧‧‧ card ring groove

24‧‧‧ Positioning slot

30‧‧‧Reduction gear set

31‧‧‧passive gear

311‧‧‧ shaft

32‧‧‧ linkage gear

40‧‧‧ Turntable

41‧‧‧Perforation

42‧‧‧ 容容

43‧‧‧ balls

50‧‧‧ fixed seat

51‧‧ ‧ room

52‧‧‧ positioning ribs

53‧‧‧ Track

531‧‧‧Starting end

532‧‧‧stop

54‧‧‧Clamping convex

60‧‧‧ Curtain unit

61‧‧‧ shaft tube

62‧‧‧ bracket

Claims (8)

A curtain winding stroke limiter structure comprises: a casing having a accommodating space in a hollow shape, and an opening is formed on one side, and the accommodating space is provided at a center of the inner wall of the opening opposite to the opening The tooth column, and the outer periphery of the outer casing is provided with a plurality of positioning portions; a gear positioning seat having a continuous perforation at the center of the gear positioning seat, and at least two limiting shafts on the side of the through hole, and the outer wall a recessed positioning slot; a reduction gear set having a driven gear and at least two interlocking gears, the driven gear having a non-cylindrical shaft that fits through a through hole of the gear positioning seat The two interlocking gears are correspondingly arranged on the limiting shaft of the gear positioning seat, so that the two interlocking gears and the driven gears are meshed with each other, and are coupled with the driven tooth cylinder of the outer casing through a linkage gear; The utility model has a non-circular hole-shaped perforation, and is matched with a non-cylindrical shaft which is sleeved on a driven gear passing through the gear positioning seat, and has a receiving groove on the outer side surface, and accommodates a ball; The fixing seat has an open type chamber, and the positioning rib is disposed on the inner wall to be engaged with the positioning slot of the gear positioning seat, and a track is recessed in the inner wall of the container, and the track is non-connected with a starting end And the stop end. The structure of the winding stroke limiter of the curtain according to claim 1, wherein the inner wall of the open end of the outer casing has a barbed hook portion, and the outer circumference of the gear positioning seat corresponds to the card of the outer casing. The buckle portion is recessed with a snap ring groove. According to the claim 1, the winding stroke limiter structure of the curtain according to the first aspect of the patent application, wherein The positioning portion of the outer periphery of the outer casing is represented by a rib. A roll-to-roll stroke limiter structure according to the first, second or third aspect of the invention, wherein the outer peripheral edge of the opening of the outer casing is provided with a stop projection. The roll-to-roll stroke limiter structure of the curtain according to claim 1, wherein the positioning portion of the outer periphery of the outer casing is represented by a groove. The structure of the winding stroke limiter of the curtain according to the first aspect of the patent application, wherein the track of the inner wall of the fixed seat is spirally wound from the outside to the inside, and the groove of the turntable corresponds to The scroll track forms a long groove. The structure of the winding stroke limiter of the curtain according to the first aspect of the invention, wherein the outer wall surface of the fixing seat protrudes from a non-cylindrical engaging convex portion. According to the invention, in the structure of the first embodiment of the invention, the outer wall surface of the fixing seat is provided with a sleeve hole, and a through hole is formed through the outer wall, and a pin is further provided.