CN115299761B

CN115299761B - Extension rail

Info

Publication number: CN115299761B
Application number: CN202210962452.2A
Authority: CN
Inventors: 罗放清; 胡笛; 江财发; 朱分江
Original assignee: Guangdong Chuangming Sun Shade Technology Co ltd
Current assignee: Guangdong Chuangming Sun Shade Technology Co ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2024-03-12
Anticipated expiration: 2042-08-11
Also published as: CN115299761A

Abstract

The invention discloses a connecting telescopic rail, which comprises a first curtain rail assembly, a second curtain rail assembly, a transmission connecting shaft, a first limiting part and a second limiting part, wherein the first curtain rail assembly comprises a first guide rail and a first transmission box, one end of the first guide rail is connected with the first transmission box, and the first transmission box is provided with a first transmission wheel; the second curtain rail assembly comprises a second guide rail and a second transmission box, the second transmission box is provided with a second transmission wheel, the second transmission box is arranged on the side face of the second guide rail, the second transmission box can move along the second guide rail, and the second transmission wheel is meshed with the first transmission wheel for transmission so that the second transmission belt is in transmission connection with the first transmission belt; the transmission connecting shaft is spliced with the second driving wheel; the first limiting component is connected with the first guide rail, and the first limiting component props against the second guide rail; the second limiting component is connected with the second guide rail, and the second limiting component props against the second transmission case. The invention can be widely applied to the technical field of curtain guide rails.

Description

Extension rail

Technical Field

The invention relates to the technical field of curtain guide rails, in particular to a connecting telescopic rail.

Background

The motorized window treatments gradually replace manually pulled window treatments, and the length of the window treatments rails needs to be determined according to the size of the window prior to installation of the motorized window treatments. Some manufacturers currently push out customized electric curtains, which can customize curtain rails with different lengths for users, usually adopt multi-section guide rail assembly, after determining the window length, assemble the curtain rails with corresponding lengths on site, and then workers install the assembled curtain rails at the ceilings. The curtain guide rail assembled by the method of assembling before hoisting is heavy, so that the working strength of workers is high, and the curtain guide rail is difficult to adjust after hoisting if the length deviates.

Disclosure of Invention

In order to solve at least one of the above technical problems, the present invention provides a docking telescopic rail, and the adopted technical scheme is as follows.

The invention provides a connecting telescopic rail which comprises a first curtain rail assembly, a second curtain rail assembly, a first limiting part and a second limiting part, wherein the first curtain rail assembly comprises a first guide rail, a first driving belt, a driving guide wheel and a first driving box, one end of the first guide rail is provided with the driving guide wheel, the other end of the first guide rail is provided with the first driving box, a first driving wheel is arranged in the first driving box, and the first driving wheel is in driving connection with the first driving belt; the second curtain rail assembly comprises a second guide rail, a second driving belt, a driving guide wheel and a second driving box, wherein the driving guide wheels are respectively arranged at two ends of the second guide rail, a second driving wheel is arranged in the second driving box and is in driving connection with the second driving belt, the second driving box is arranged on the side face of the second guide rail and is movable along the second guide rail, and under the condition that the first curtain rail assembly and the second curtain rail assembly are installed, the second driving wheel is in driving connection with the first driving wheel through gear tooth meshing so as to enable the second driving belt to be in driving connection with the first driving belt; the first limiting component is connected with the first guide rail, and when the first curtain rail assembly and the second curtain rail assembly are installed, the first end of the second guide rail is connected with the first guide rail, and the first limiting component abuts against the first end of the second guide rail; the second limiting component is connected with the second guide rail, and under the condition that the first curtain rail component and the second curtain rail component are installed, the first end of the second transmission case is in butt joint with the first transmission case, and the second limiting component abuts against the second end of the second transmission case.

In some embodiments of the present invention, the docking telescopic rail includes a transmission connection shaft, the second transmission wheel includes a first transmission part and a second transmission part, the first transmission part is used for being in transmission connection with the first transmission wheel, the second transmission part is in transmission connection with the second transmission belt, the transmission connection shaft penetrates through the first transmission part and is in plug connection with the second transmission part, the transmission connection shaft is respectively in transmission connection with the first transmission part and the second transmission part, and the transmission connection shaft is jacked upwards, so that the transmission connection between the transmission connection shaft and the second transmission part can be disconnected.

In some embodiments of the present invention, a reset elastic member is disposed in the second transmission case, and the reset elastic member is disposed between the top wall in the second transmission case and the transmission connecting shaft, and is used for applying an elastic thrust force to the transmission connecting shaft along the axial direction of the transmission connecting shaft.

In some embodiments of the present invention, a sliding groove is provided on an inner wall of the through hole of the first transmission part, and the transmission connection shaft is provided with a sliding part, and the sliding part is slidingly connected with the sliding groove; the sliding groove comprises a first sliding groove, and the first sliding groove is arranged along the axial direction of the through hole of the first transmission part.

In some embodiments of the present invention, the sliding groove includes a second sliding groove and a third sliding groove, the second sliding groove is disposed along a circumferential direction of the through hole of the first transmission portion, one end of the second sliding groove is communicated with the first sliding groove, the other end of the second sliding groove is connected with the third sliding groove, and the third sliding groove and the first sliding groove are located at a same side of the second sliding groove.

In some embodiments of the present invention, the first end of the second guide rail is provided with a first protruding structure protruding along the axial direction of the second guide rail, the first protruding structure is located between the inner side of the first limiting member and the side surface of the first guide rail, and the inner side of the first limiting member abuts against the first protruding structure.

In some embodiments of the present invention, the first transmission case and the second transmission case are connected in an inlaid manner by adopting a concave-convex structure, a second protruding structure is disposed at a second end of the second transmission case, the second protruding structure protrudes along an axial direction of the second guide rail, the second protruding structure is located between an inner side of the second limiting member and a side surface of the second guide rail, and the inner side of the second limiting member abuts against the second protruding structure.

In some embodiments of the invention, the side surface of the first guide rail is clamped with the side surface of the second guide rail.

In some embodiments of the present invention, the first limiting component is clamped with a side surface of the first guide rail, and the first limiting component is abutted against the side surface of the first guide rail through a first screw connected with the first limiting component, so that the first limiting component is fixed with the first guide rail; the second limiting component is clamped with the side face of the second guide rail, and the second limiting component is abutted against the side face of the second guide rail through a second threaded piece connected with the second limiting component, so that the second limiting component is fixed with the second guide rail.

In some embodiments of the present invention, the docking telescopic rail includes a transmission connection shaft, the first transmission wheel includes a third transmission part and a fourth transmission part, the third transmission part is used for being in transmission connection with the second transmission wheel, the fourth transmission part is in transmission connection with the first transmission belt, the transmission connection shaft penetrates through the third transmission part and is in plug connection with the fourth transmission part, the transmission connection shaft is respectively in transmission connection with the third transmission part and the fourth transmission part, and the transmission connection shaft is jacked upwards, so that the transmission connection between the transmission connection shaft and the fourth transmission part can be disconnected.

The embodiment of the invention has at least the following beneficial effects: and respectively hoisting the first curtain rail component and the second curtain rail component at the ceiling, moving the second transmission box to a position butted with the first transmission box, and fixing the first limiting component and the second limiting component so that the first curtain rail component and the second curtain rail component are fixedly connected, and simultaneously fixing the position of the second transmission box. The invention adopts a mode of firstly hoisting the first curtain rail component, the second curtain rail component and then assembling and installing, and can adjust the position of the second transmission case according to the width of the window. The invention can be widely applied to the technical field of curtain guide rails.

Drawings

The foregoing and/or additional aspects and advantages of the present invention will be apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings.

Fig. 1 is a structural diagram of a docking telescoping rail.

Fig. 2 is a structural view of a first curtain rail assembly.

Fig. 3 is a structural view of a second curtain rail assembly.

Fig. 4 is a structural view of the second gear box.

Fig. 5 is an internal structural view of the second transmission case.

Fig. 6 is a structural view of the second driving wheel.

Fig. 7 is a cross-sectional view of the structure of fig. 6, showing the drive connection shaft.

FIG. 8 is a block diagram of a male-female mosaic connection of a first gear box and a second gear box, showing the second gear box having a second projection configuration.

Detailed Description

Embodiments of the present invention are described in detail below with reference to fig. 1 through 8, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that, if the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are used as directions or positional relationships based on the directions shown in the drawings, the directions are merely for convenience of description and for simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Features defining "first", "second" are used to distinguish feature names from special meanings, and furthermore, features defining "first", "second" may explicitly or implicitly include one or more such features. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The invention relates to a connecting telescopic rail, which comprises a first curtain rail assembly 1000 and a second curtain rail assembly 2000, wherein the first curtain rail assembly 1000 and the second curtain rail assembly 2000 are spliced to form the connecting telescopic rail, and the connecting telescopic rail is convenient to install.

The first curtain rail assembly 1000 includes a first guide rail 1100, a first driving belt and a driving guide wheel, specifically, one end of the first guide rail 1100 is provided with the driving guide wheel, and the first driving belt is in driving connection with the driving guide wheel. Referring to the drawings, the first curtain rail assembly 1000 includes a first gear box 1200, and the first gear box 1200 is disposed at the other end of the first rail 1100.

Further, a first transmission wheel 1201 is provided in the first transmission case 1200, specifically, the first transmission wheel 1201 is connected to the first transmission case 1200 through a rolling bearing; alternatively, the first transmission wheel 1201 is connected to a rotating shaft via a rolling bearing, and the rotating shaft is connected to the first transmission case 1200. The first driving wheel 1201 is in driving connection with a first driving belt, which is in driving connection with the first driving wheel 1201.

It is understood that the two ends of the first driving belt are respectively connected with the driving guide wheel and the first driving wheel 1201 in a driving way. Further, the first transmission belt is configured as a synchronous belt, and accordingly, the first transmission wheel 1201 and the corresponding transmission guide wheel are respectively configured as pulleys.

The first curtain rail assembly 1000 comprises a first trolley 1101, the first trolley 1101 is used for installing curtain cloth, the first trolley 1101 is connected with a first driving belt, and the first trolley 1101 is slidably connected with a first guide rail 1100. It will be appreciated that the first sled 1101 reciprocates along the first rail 1100 under the drive of the first drive belt.

The second curtain rail assembly 2000 includes a second guide rail 2100, a second driving belt 2101 and driving guide wheels, two ends of the second guide rail 2100 are respectively provided with driving guide wheels, and the second driving belt 2101 is respectively connected with two driving guide wheels in a driving way. It will be appreciated that the second curtain rail assembly 2000 includes a second carriage 2102, the second carriage 2102 being configured to mount a curtain cloth, the second carriage 2102 being coupled to a second drive belt 2101, the second carriage 2102 being slidably coupled to the second rail 2100. The second carriage 2102 reciprocates along the second guide 2100 under the driving of the second belt 2101.

Further, the second curtain rail assembly 2000 includes a second gear box 2200, the second gear box 2200 is disposed on a side surface of the second guide rail 2100, a second driving wheel 2201 is disposed in the second gear box 2200, and the second driving wheel 2201 is in driving connection with the second driving belt 2101. In some examples, the second transmission belt 2101 is configured as a synchronous belt, and the second transmission wheel 2201 and the corresponding two transmission pulleys are respectively configured as pulleys.

In some examples, a guide wheel 2204 is disposed in the second gear box 2200, the guide wheel 2204 being in driving connection with the second belt 2101. With reference to the figures, there are two guide wheels 2204, and two guide wheels 2204 are respectively disposed in the second gear box 2200 near the inlet and outlet of the second belt 2101, and the guide wheels 2204 play a role in redirecting and tensioning the second belt 2101.

It will be appreciated that with the first and second curtain rail assemblies 1000 and 2000 installed, the end of the first transmission case 1200 is in abutting engagement with the end of the second transmission case 2200, and the second transmission wheel 2201 is in driving engagement with the first transmission wheel 1201 via a gear tooth engagement to drivingly connect the second transmission belt 2101 to the first transmission belt.

In combination with the drawings, a third driving wheel 2205 is disposed in the second driving box 2200, the third driving wheel 2205 is meshed with the second driving wheel 2201, and in the case of mounting the first curtain rail assembly 1000 and the second curtain rail assembly 2000, the third driving wheel 2205 is meshed with the first driving wheel 1201, it is understood that the second driving wheel 2201 is meshed with the first driving wheel 1201 through the third driving wheel 2205.

Further, the second gear box 2200 is designed to be movable along the second guide rail 2100, and the second gear box 2200 can be moved according to the width of the window, thereby obtaining the docking telescopic rail of the adapted length. It will be appreciated that after the first and second curtain rail assemblies 1000 and 2000 are each suspended from the ceiling, the second gear box 2200 is moved to a position where it can be docked with the first gear box 1200 and the position of the second gear box 2200 on the second rail 2100 is fixed, thereby fixing the length of the docked telescopic rail after installation.

In some examples, the side of the second guide 2100 is provided with a guide structure, and the second gear case 2200 is movably engaged with the guide structure so that the second gear case 2200 can smoothly move along the second guide 2100. Specifically, the guide structure is provided as a guide card slot or guide projection.

Referring to the drawings, the docking telescoping rail is designed to include a second limiting member 2300, the second limiting member 2300 being used to fix the position of the second gear box 2200 on the second guide rail 2100. Specifically, the second limiting member 2300 is connected to the second guide rail 2100, and when the first curtain rail assembly 1000 and the second curtain rail assembly 2000 are installed, the first end of the second transmission case 2200 is abutted to the first transmission case 1200, the second limiting member 2300 abuts against the second end of the second transmission case 2200, and the second limiting member 2300 is fixed to the second guide rail 2100, so that the second transmission case 2200 can be fixed to the second guide rail 2100.

In some examples, the second limiting member 2300 is clamped to a side surface of the second guide rail 2100, specifically, the upper side and the lower side of the second guide rail 2100 are respectively provided with a clamping groove, the upper side and the lower side of the second limiting member 2300 are respectively provided with a clamping portion, and the second limiting member 2300 is correspondingly clamped to the clamping groove of the second guide rail 2100 through the clamping portion. Further, the second limiting member 2300 is fixed to the second guide 2100 by a second screw coupled to the second limiting member 2300 against a side surface of the second guide 2100.

Specifically, the second screw member is configured as a screw or a bolt, penetrates through the clamping portion of the lower side of the second limiting member 2300, and is in threaded connection with the clamping portion of the lower side, and is screwed up to prop against the second guide rail 2100, thereby locking and fixing the second limiting member 2300 and the second guide rail 2100.

Further, the designed docking telescoping rail includes a first stop member 1300, the first stop member 1300 being configured to fix the relative position of the second rail 2100 and the first rail 1100, thereby fixing the position of the second rail 2100 relative to the first rail 1100. It will be appreciated that in this case, the first and second stop members 1300, 2300 fix the length of the overlapping portion of the first and second rails 1100, 2100, and thus the length of the docked telescopic rail.

Referring to the drawings, the first limiting member 1300 is connected to the first rail 1100, and when the first and second curtain rail assemblies 1000 and 2000 are installed, the first end of the second rail 2100 is connected to the first rail 1100, and the first limiting member 1300 abuts against the first end of the second rail 2100, so that the first limiting member 1300 and the first rail 1100 are fixed, and the position of the second rail 2100 with respect to the first rail 1100 can be fixed.

In some examples, the first limiting component 1300 is clamped to a side surface of the first guide rail 1100, specifically, the upper side and the lower side of the first guide rail 1100 are respectively provided with a clamping groove, the upper side and the lower side of the first limiting component 1300 are respectively provided with a clamping part, and the first limiting component 1300 is correspondingly clamped to the clamping groove of the first guide rail 1100 through the clamping part. Further, the first limiting member 1300 is fixed to the first rail 1100 by abutting the first screw member connected to the first limiting member 1300 against the side surface of the first rail 1100.

Specifically, the first screw member is configured as a screw or a bolt, penetrates through the clamping portion of the lower side of the first limiting member 1300, is in threaded connection with the clamping portion of the lower side, and is screwed up to prop against the first guide rail 1100, so that the first limiting member 1300 and the first guide rail 1100 are locked and fixed.

After the telescopic rails are connected, in order to keep the first guide rail 1100 and the second guide rail 2100 in fit, separation is avoided, and the parts of the first guide rail 1100 and the second guide rail 2100 which are overlapped and spliced are designed for reinforcing connection so as to prevent the mutually-fitted side surfaces of the first guide rail 1100 and the second guide rail 2100 from separating.

As one embodiment, the first end of the second guide rail 2100 is provided with a first protrusion structure protruding in the axial direction of the second guide rail 2100. In the case where the first and second curtain rail assemblies 1000 and 2000 are installed, the first projection structure is located between the inner side of the first stopper member 1300 and the side of the first rail 1100. With the first stop member 1300 locked with the first guide rail 1100, the inner side of the first stop member 1300 abuts against the first protruding structure, and the first stop member 1300 presses against the first protruding structure, thereby restricting the second guide rail 2100 from remaining attached to the first guide rail 1100.

Considering that the first end of the second gear box 2200 is docked with the first gear box 1200, the second end of the second gear box 2200 is designed with a second protrusion 2301, the second protrusion 2301 protruding in the axial direction of the second guide rail 2100. With the first and second curtain rail assemblies 1000 and 2000 installed, the second projection arrangement 2301 is located between the inside of the second stop member 2300 and the side of the second rail 2100. With the second limit member 2300 locked with the second guide rail 2100, the inner side of the second limit member 2300 abuts against the second projection structure 2301, and the second limit member 2300 presses the second projection structure 2301.

Further, the first gear box 1200 and the second gear box 2200 are connected by adopting a concave-convex structure, so that when the second limiting member 2300 presses the second protrusion structure 2301, the second gear box 2200, the first gear box 1200 and the first guide rail 1100 keep a state of being attached to the second guide rail 2100. Specifically, the first end of the second transmission case 2200 is provided with a plurality of concave regions, and the end of the first transmission case 1200 is provided with a plurality of corresponding convex structures, and the convex structures and the concave regions are mutually engaged and clamped.

Alternatively, the side surface of the first rail 1100 is designed to be clamped with the side surface of the second rail 2100, specifically, the upper side and the lower side of the first rail 1100 are respectively provided with a clamping groove, the upper side and the lower side of the second rail 2100 are respectively provided with a convex clamping part, and when the first curtain rail assembly 1000 and the second curtain rail assembly 2000 are installed, the clamping part of the second rail 2100 is matched with the clamping groove of the first rail 1100, so that the attached side surface between the first rail 1100 and the second rail 2100 is fixed.

It will be appreciated that the double-opening curtain is adopted for the telescopic rail, so that after the telescopic rail is installed, the positions of the first trolley 1101 and the second trolley 2102 need to be adjusted, in this case, the transmission connection between the first transmission belt and the second transmission belt 2101 needs to be disconnected, so that the positions of the first trolley 1101 and the second trolley 2102 can be adjusted separately and independently, and the centering and double-opening of the curtain are realized.

Specifically, the second transmission wheel 2201 includes a first transmission portion 2202 and a second transmission portion 2203, the first transmission portion 2202 is configured to be in transmission connection with the first transmission wheel 1201, and the second transmission portion 2203 is configured to be in transmission connection with the second transmission belt 2101. It will be appreciated that in the case of the first drive wheel 1201 and the second drive wheel 2201 being in meshed engagement, the first drive belt and the second drive belt 2101 are in driving engagement and in synchronous operation by coaxial, synchronous rotation of the first drive portion 2202 and the second drive portion 2203. In this case, if the coaxial and synchronous transmission between the first transmission portion 2202 and the second transmission portion 2203 can be disconnected, the transmission connection between the first transmission belt and the second transmission belt 2101 can be disconnected.

The docking telescopic rail comprises a transmission connecting shaft 3000, wherein the transmission connecting shaft 3000 is arranged in a second transmission case 2200, the transmission connecting shaft 3000 is spliced with a second transmission wheel 2201, specifically, the transmission connecting shaft 3000 penetrates through a first transmission part 2202 and is spliced with a second transmission part 2203, the transmission connecting shaft 3000 is used as a shaft structure for connecting the first transmission part 2202 and the second transmission part 2203, and the transmission connecting shaft 3000 is respectively in transmission connection with the first transmission part 2202 and the second transmission part 2203.

It will be appreciated that by designing to jack up the drive connection shaft 3000 to disconnect the drive connection shaft 3000 from the second drive portion 2203, the drive connection between the first drive portion 2202 and the second drive portion 2203 can be disconnected, thereby disconnecting the drive connection between the first drive belt and the second drive belt 2101.

In connection with the drawing, an operation hole is provided at the bottom of the second transmission case 2200, through which the transmission connection shaft 3000 can be jacked up by a tool to disconnect the transmission connection between the first transmission portion 2202 and the second transmission portion 2203, thereby disconnecting the transmission connection between the second transmission belt 2101 and the first transmission belt. In some examples, the lower end of the drive connection shaft 3000 may also be designed to protrude from the operating hole.

It is to be understood that the inner wall of the through hole of the first transmission portion 2202 is provided with a sliding groove, the transmission connecting shaft 3000 is provided with a sliding portion, the sliding portion is provided protruding on the side surface of the transmission connecting shaft 3000, and the sliding portion is slidably connected with the sliding groove. As an equivalent replacement, it may be further designed that the first transmission portion 2202 is connected with a rotating shaft sleeve, the transmission connecting shaft 3000 penetrates through the rotating shaft sleeve, and the sliding groove is disposed on the inner wall of the rotating shaft sleeve.

Referring to the drawings, the sliding groove includes a first sliding groove 3201, the first sliding groove 3201 is disposed along an axial direction of a through hole of the first transmission portion 2202, and when the transmission connection shaft 3000 is lifted up, the sliding portion moves along the first sliding groove 3201. It can be appreciated that, when the second driving wheel 2201 rotates, the driving connection shaft 3000 can be driven to rotate by the clamping of the side wall of the first chute 3201 to the sliding portion.

The transmission connecting shaft 3000 is connected with the second transmission portion 2203 by a key, specifically, the transmission connecting shaft 3000 is connected with the second transmission portion 2203 by a spline.

When the transmission connecting shaft 3000 is in key connection with the second transmission portion 2203 and the transmission connecting shaft 3000 is clamped with the first transmission portion 2202 through the first sliding groove 3201 and the sliding portion, the transmission connecting shaft 3000 can be in transmission connection with the second transmission portion 2203 and the first transmission portion 2202 respectively. In this case, by lifting up the transmission connection shaft 3000, the key connection between the transmission connection shaft 3000 and the second transmission portion 2203 can be separated, and the transmission connection between the transmission connection shaft 3000 and the second transmission portion 2203 can be disconnected. The number of the sliding grooves is plural, and accordingly, the number of the first sliding grooves 3201 is plural, and the number of the sliding portions is plural, so that the torque between the transmission connecting shaft 3000 and the first transmission portion 2202 is balanced, and the transmission connecting shaft 3000 can be made stable when moving along the first sliding grooves 3201. In some examples, there are two sliding grooves, and correspondingly, there are two first sliding grooves 3201.

Further, a return elastic member 3100 is provided in the second transmission case 2200, the return elastic member 3100 is provided as a compression spring, the return elastic member 3100 is provided between the top wall in the second transmission case 2200 and the transmission connecting shaft 3000, and the return elastic member 3100 is used for applying an elastic pushing force along the axial direction of the transmission connecting shaft 3000 to the transmission connecting shaft 3000.

It can be appreciated that, after the transmission connecting shaft 3000 is lifted, the reset elastic member 3100 is in a compressed state, in this case, if the lifting of the transmission connecting shaft 3000 is released, the transmission connecting shaft 3000 can be reset to a position in which it is connected to the second transmission portion 2203 by the reset elastic member 3100.

Referring to the drawings, the sliding groove includes a second sliding groove 3202, one end of the second sliding groove 3202 communicates with the first sliding groove 3201, and the second sliding groove 3202 is disposed along a circumferential direction of the through hole of the first transmission portion 2202. In connection with the drawings, the second sliding groove 3202 is designed as a section of groove body arranged along the circumferential direction of the through hole of the first transmission portion 2202.

After the transmission connecting shaft 3000 is jacked up, the transmission connecting shaft 3000 is rotated, so that the sliding portion enters the second sliding groove 3202, thereby keeping the transmission connecting shaft 3000 at the jacked up position and keeping the transmission connecting shaft 3000 disconnected from the second transmission portion 2203. It can be appreciated that, in combination with the elastic force of the reset elastic member 3100, the sliding portion can be pressed downward against the sidewall of the second sliding groove 3202, so as to fix the position of the transmission connecting shaft 3000.

Further, the lower end of the transmission connection shaft 3000 is provided with a torsion force application structure, and the transmission connection shaft 3000 can be conveniently rotated by connecting the tool with the torsion force application structure. Specifically, the torsion force application structure is arranged as a straight slot. Of course, it is also possible to design: the torsion force application structure is one of a cross groove, a prismatic structure, a plum blossom groove and a straight convex structure.

Referring to the drawings, the sliding groove includes a third sliding groove 3203, the other end of the second sliding groove 3202 is connected with the third sliding groove 3203, and the third sliding groove 3203 is located on the same side of the second sliding groove 3202 as the first sliding groove 3201. After the transmission connection shaft 3000 is jacked up and rotated, the sliding portion can be moved into the third sliding groove 3203, and the sliding portion can be prevented from moving into the first sliding groove 3201 by using the restriction of the third sliding groove 3203 on the sliding portion and the elastic force of the reset elastic member 3100, so that the transmission connection between the transmission connection shaft 3000 and the second transmission portion 2203 is maintained.

Regarding the arrangement of the reset spring 3100, in some examples, the upper end of the drive connection shaft 3000 is provided with a blind hole, and the reset spring 3100 is arranged in the blind hole, preventing the positional deviation of the reset spring 3100. Of course, as an alternative, it is also possible to design: the upper end of the transmission connecting shaft 3000 is provided with a protruding structure, and the reset elastic piece 3100 is sleeved on the protruding structure.

As regards the position in which the drive connection shaft 3000 is arranged, it is alternatively also possible to design: the transmission connecting shaft 3000 is arranged in the first transmission case 1200, the transmission connecting shaft 3000 penetrates through the first transmission wheel 1201, an operation hole is formed in the bottom of the first transmission case 1200, and the transmission connecting shaft 3000 can be jacked up by penetrating through the operation hole by a tool, so that the first transmission wheel is disconnected from the second transmission wheel 2201, and the second transmission belt 2101 is disconnected from the first transmission belt.

Specifically, the first driving wheel includes a third driving part and a fourth driving part, the third driving part is used for being in driving connection with the second driving wheel 2201, the fourth driving part is in driving connection with the first driving belt, the driving connecting shaft 3000 penetrates through the third driving part and is spliced with the fourth driving part, the driving connecting shaft 3000 is in driving connection with the third driving part and the fourth driving part respectively, and the driving connecting shaft 3000 is jacked upwards, so that the driving connection between the driving connecting shaft 3000 and the fourth driving part can be disconnected.

In this case, as an equivalent alternative, embodiments concerning the return spring 3100 and the sliding groove can also be provided at the first driving wheel.

The following description describes a method of installing a docking expansion rail in conjunction with the structure of the docking expansion rail in the present invention, and should be noted that the following description is merely exemplary and not a specific limitation of the present invention.

The first guide rail 1100 and the second guide rail 2100 are installed at the ceiling, respectively.

Moving the second gear box 2200, the second gear box 2200 interfaces with the first gear box 1200.

Fixing the first and second limit members 1300 and 2300: at the first limiting member 1300, screwing the first screw from the bottom up; at the second limiting member 2300, the second screw is screwed up from below.

The curtain driver 4000 is installed on the first rail 1100 or the second rail 2100.

After installation, the drive connection shaft 3000 is lifted and rotated by a tool to disconnect the drive connection of the first and second drive belts 2101, thereby adjusting and centering the positions of the first and second pulleys 1101 and 2102.

In the related art, the docking telescopic rail is usually assembled in advance and then integrally mounted to the ceiling, and a plurality of workers are required to cooperate to complete the mounting on the ceiling. By adopting the connecting telescopic rail, the first curtain rail assembly 1000 and the second curtain rail assembly 2000 can be installed on the ceiling one by one, and the assembly is completed in the installation process, so that the assembly is convenient.

In the description of the present specification, if a description appears that makes reference to the term "one embodiment," "some examples," "some embodiments," "an exemplary embodiment," "an example," "a particular example," or "some examples," etc., it is intended that the particular feature, structure, material, or characteristic described in connection with the embodiment or example be included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.

In the description of the present invention, the terms "and" if used in the singular are intended to mean "and" as opposed to "or". For example, the patent name "a A, B" describes that what is claimed in the present invention is: a technical scheme with a subject name A and a technical scheme with a subject name B.

Claims

1. The utility model provides a refute and connect flexible rail which characterized in that: comprising

The first curtain rail assembly (1000), the first curtain rail assembly (1000) comprises a first guide rail (1100), a first driving belt, a driving guide wheel and a first driving box (1200), one end of the first guide rail (1100) is provided with the driving guide wheel, the other end of the first guide rail (1100) is provided with the first driving box (1200), a first driving wheel (1201) is arranged in the first driving box (1200), and the first driving wheel (1201) is in driving connection with the first driving belt;

the second curtain rail assembly (2000), the second curtain rail assembly (2000) comprises a second guide rail (2100), a second transmission belt (2101), transmission guide wheels and a second transmission box (2200), the transmission guide wheels are respectively arranged at two ends of the second guide rail (2100), a second transmission wheel (2201) is arranged in the second transmission box (2200), the second transmission wheel (2201) is in transmission connection with the second transmission belt (2101), the second transmission box (2200) is arranged on the side surface of the second guide rail (2100), the second transmission box (2200) is movable along the second guide rail (2100), and under the condition that the first curtain rail assembly (1000) and the second curtain rail assembly (2000) are installed, the second transmission wheel (2201) is in transmission connection with the first transmission wheel (1201) through gear teeth in a meshed mode, so that the second transmission belt (2101) is in transmission connection with the first transmission belt;

a first limit component (1300), the first limit component (1300) is connected with the first guide rail (1100), when the first curtain rail assembly (1000) and the second curtain rail assembly (2000) are installed, a first end of the second guide rail (2100) is connected with the first guide rail (1100), the first limit component (1300) abuts against the first end of the second guide rail (2100), and the first limit component (1300) is used for fixing the relative positions of the second guide rail (2100) and the first guide rail (1100);

a second limit member (2300), the second limit member (2300) being connected to the second rail (2100), a first end of the second transmission case (2200) being in abutment with the first transmission case (1200) with the first curtain rail assembly (1000) and the second curtain rail assembly (2000) mounted, the second limit member (2300) abutting a second end of the second transmission case (2200), the second limit member (2300) being for fixing a position of the second transmission case (2200) on the second rail (2100);

wherein a third driving wheel (2205) is arranged in the second transmission case (2200), the third driving wheel (2205) is meshed with the second driving wheel (2201), and the second driving wheel (2201) is meshed with the first driving wheel (1201) through the third driving wheel (2205); the end of the first transmission case (1200) is provided with a window for exposing the first transmission wheel (1201), and the end of the second transmission case (2200) is provided with a window for exposing the third transmission wheel (2205).

2. The docking telescoping rail of claim 1, wherein: the telescopic rail is connected in a connecting mode and comprises a transmission connecting shaft (3000), the second transmission wheel (2201) comprises a first transmission part (2202) and a second transmission part (2203), the first transmission part (2202) is used for being in transmission connection with the first transmission wheel (1201), the second transmission part (2203) is in transmission connection with the second transmission belt (2101), the transmission connecting shaft (3000) penetrates through the first transmission part (2202) and is in plug connection with the second transmission part (2203), the transmission connecting shaft (3000) is in transmission connection with the first transmission part (2202) and the second transmission part (2203) respectively, the transmission connecting shaft (3000) is jacked upwards, and transmission connection between the transmission connecting shaft (3000) and the second transmission part (2203) can be disconnected.

3. The docking telescoping rail of claim 2, wherein: the second transmission case (2200) is internally provided with a reset elastic piece (3100), the reset elastic piece (3100) is arranged between the top wall in the second transmission case (2200) and the transmission connecting shaft (3000), and the reset elastic piece (3100) is used for applying elastic thrust to the transmission connecting shaft (3000) along the axial direction of the transmission connecting shaft (3000).

4. A docking telescopic rail according to claim 2 or 3, wherein: the inner wall of the through hole of the first transmission part (2202) is provided with a sliding groove, the transmission connecting shaft (3000) is provided with a sliding part, and the sliding part is in sliding connection with the sliding groove; the sliding groove comprises a first sliding groove (3201), and the first sliding groove (3201) is arranged along the axial direction of a through hole of the first transmission part (2202).

5. The docking telescoping rail of claim 4, wherein: the sliding groove comprises a second sliding groove (3202) and a third sliding groove (3203), the second sliding groove (3202) is arranged along the circumference of a through hole of the first transmission part (2202), one end of the second sliding groove (3202) is communicated with the first sliding groove (3201), the other end of the second sliding groove (3202) is connected with the third sliding groove (3203), and the third sliding groove (3203) and the first sliding groove (3201) are located on the same side of the second sliding groove (3202).

6. The docking telescoping rail of claim 1, wherein: the first end of the second guide rail (2100) is provided with a first protruding structure, the first protruding structure protrudes along the axial direction of the second guide rail (2100), the first protruding structure is located between the inner side of the first limiting component (1300) and the side surface of the first guide rail (1100), and the inner side of the first limiting component (1300) abuts against the first protruding structure.

7. The docking telescoping rail of claim 6, wherein: adopt concave-convex structure to inlay between first transmission case (1200) with second transmission case (2200) and connect, the second end of second transmission case (2200) is provided with second protruding structure (2301), second protruding structure (2301) are followed the axial direction protrusion of second guide rail (2100), second protruding structure (2301) are located between the inboard of second spacing part (2300) and the side of second guide rail (2100), the inboard of second spacing part (2300) supports second protruding structure (2301).

8. The docking telescoping rail of claim 1, wherein: the side surface of the first guide rail (1100) is clamped with the side surface of the second guide rail (2100).

9. The docking telescopic rail of any one of claims 6 to 8, wherein: the first limiting component (1300) is clamped with the side face of the first guide rail (1100), and the first limiting component (1300) is abutted against the side face of the first guide rail (1100) through a first threaded piece connected with the first limiting component (1300), so that the first limiting component (1300) is fixed with the first guide rail (1100); the second limiting component (2300) is clamped with the side face of the second guide rail (2100), and the second limiting component (2300) is abutted against the side face of the second guide rail (2100) through a second screw connected with the second limiting component (2300) so that the second limiting component (2300) is fixed with the second guide rail (2100).

10. The docking telescoping rail of claim 1, wherein: the telescopic rail is connected in a plugging mode and comprises a transmission connecting shaft (3000), the first transmission wheel comprises a third transmission part and a fourth transmission part, the third transmission part is used for being in transmission connection with the second transmission wheel (2201), the fourth transmission part is in transmission connection with the first transmission belt, the transmission connecting shaft (3000) penetrates through the third transmission part and is plugged with the fourth transmission part, the transmission connecting shaft (3000) is respectively in transmission connection with the third transmission part and the fourth transmission part, the transmission connecting shaft (3000) is jacked upwards, and transmission connection between the transmission connecting shaft (3000) and the fourth transmission part can be disconnected.

11. The docking telescoping rail of claim 1, wherein: the first curtain rail assembly (1000) comprises a first pulley (1101), the first pulley (1101) is connected with the first driving belt, and the first pulley (1101) is in sliding connection with the first guide rail (1100); the second curtain rail assembly (2000) comprises a second carriage (2102), the second carriage (2102) is connected with the second driving belt (2101), and the second carriage (2102) is slidingly connected with the second guide rail (2100).

12. The docking telescoping rail of claim 1, wherein: the first transmission belt is set to be a synchronous belt, and the first transmission wheel (1201) and the corresponding transmission guide wheel are respectively set to be belt wheels; the second transmission belt (2101) is set to be a synchronous belt, and the second transmission wheel (2201) and the corresponding two transmission guide wheels are respectively set to be belt wheels.

13. The docking telescoping rail of claim 1, wherein: the side of the second guide rail (2100) is provided with a guide structure, the second transmission case (2200) is movably clamped with the guide structure, and the guide structure is provided with a guide clamping groove or a guide protrusion.

14. The docking telescoping rail of claim 9, wherein: the upper side and the lower side of the second guide rail (2100) are respectively provided with clamping grooves, the upper side and the lower side of the second limiting component (2300) are respectively provided with clamping parts, and the second limiting component (2300) is correspondingly clamped with the clamping grooves of the second guide rail (2100) through the clamping parts.

15. The docking telescoping rail of claim 9, wherein: the upper side and the lower side of the first guide rail (1100) are respectively provided with clamping grooves, the upper side and the lower side of the first limiting component (1300) are respectively provided with clamping parts, and the first limiting component (1300) is correspondingly clamped with the clamping grooves of the first guide rail (1100) through the clamping parts.

16. The docking telescoping rail of claim 7, wherein: the first end of the second transmission case (2200) is provided with a plurality of concave areas, the end of the first transmission case (1200) is provided with a plurality of corresponding protruding structures, and the protruding structures are mutually embedded and clamped with the concave areas.