Adjustable drawstring mechanism

Abstract

The utility model relates to an adjustable drawstring mechanism. It solves the technical problems that the existing drawstring tension cannot be adjusted. It is installed in a telescopic track, and includes a drawstring assembly connected to a belt at one end and connected to a drawstring at the other end. The drawstring assembly is a split structure and has a fixed seat body for connecting to the belt and a drawstring seat body for connecting to the drawstring. The drawstring seat body and the fixed seat body are axially adjacent to each other. The drawstring seat body and the fixed seat body are connected by a multi-speed adjustment connection structure that can make the drawstring seat body approach or move away from the fixed seat body so as to adjust the axial length of the drawstring assembly. The advantage is that the device uses a multi-speed adjustment connection assembly to connect the fixed seat body with the drawstring seat body. When the drawstring is loose, the upper teeth and the lower teeth are adjusted in sequence to put the drawstring in a tensioned state, thereby increasing the service life of the drawstring.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric curtain equipment, and in particular relates to an adjustable pull rope mechanism. Background Art

[0002] With the continuous improvement of science and technology, smart homes are increasingly appearing in people's lives and are loved by most people today. As one of the representatives of smart homes, electric curtains have brought a lot of convenience to people's lives. At present, most curtains on the market lack a mechanism that can adjust the tightness of the synchronous belt, so they are tightened by pull cords. However, due to the long-term stress on the pull cords, the curtains will slowly become loose after running for a period of time. In order to ensure the normal operation of the curtains, the pull cords need to be replaced, which increases the cost of use and brings a bad user experience. Summary of the invention

[0003] The purpose of the utility model is to provide an adjustable pull rope mechanism in view of the above problems.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an adjustable drawstring mechanism, installed in a telescopic track, including a drawstring assembly connected to a belt at one end and connected to a drawstring at the other end, the drawstring assembly is a split structure and has a fixed seat body for connecting to the belt and a drawstring seat body for connecting to the drawstring, the drawstring seat body and the fixed seat body are axially adjacently arranged, and the drawstring seat body and the fixed seat body are connected by a multi-stage adjustment connection structure that can make the drawstring seat body close to or away from the fixed seat body to adjust the axial length of the drawstring assembly. The drawstring is connected to the drawstring seat body, and the drawstring seat body is connected to the fixed seat body through the multi-stage adjustment connection structure, and the multi-stage adjustment connection structure can keep the drawstring in a tensioned state, thereby extending the service life of the drawstring.

[0005] In the above-mentioned adjustable rope pulling mechanism, the rope pulling assembly is axially extended along the telescopic track, and the fixed seat body is fixedly arranged in one of the track bodies of the telescopic track, and the rope pulling seat body is axially movable relative to the rope pulling seat body.

[0006] In the above-mentioned adjustable drawstring mechanism, the end of the fixed seat away from the drawstring seat has a belt rotating shaft for winding a belt, and the end of the drawstring seat away from the fixed seat has a drawstring connecting portion for connecting to the drawstring.

[0007] In the above-mentioned adjustable pull rope mechanism, the multi-level adjustment connection structure is a concave-convex multi-level adjustment connection structure.

[0008] In the above-mentioned adjustable drawstring mechanism, the multi-level adjustment connection structure includes a fixed connection seat arranged at one end of the fixed seat body close to the drawstring seat body, the drawstring seat body has a movable connection seat at one end close to the fixed seat body, and the movable connection seat and the fixed connection seat are staggered up and down and the movable connection seat is located above the fixed connection seat, and a multi-level adjustment connection assembly is arranged between the movable connection seat and the fixed connection seat. The movable connection seat and the fixed connection seat are staggered up and down, which is conducive to the adjustment between the fixed seat body and the drawstring seat body.

[0009] In the above-mentioned adjustable rope pulling mechanism, the multi-speed adjustment connection assembly includes a plurality of upper teeth axially arranged in sequence on the lower side of the movable connecting seat, and a plurality of lower teeth axially arranged in sequence on the upper side of the fixed connecting seat, and the upper teeth and the lower teeth are meshed with each other. The upper teeth and the lower teeth are adjusted according to the slackness of the rope to put the rope in a tensioned state.

[0010] In the above-mentioned adjustable rope pulling mechanism, the fixed seat body is in an upper and lower split structure and the fixed connecting seat is clamped and fixed in the fixed seat body. The fixed seat body is connected to the fixed connecting seat, and the fixed seat body is connected to the rope pulling seat body through the fixed connecting seat.

[0011] In the above-mentioned adjustable rope pulling mechanism, the fixed seat body includes an upper fixed seat and a lower fixed seat that are arranged in parallel and correspond to each other, the upper fixed seat is located on one side of the movable connecting seat and is located on the same horizontal plane as the movable connecting seat, and the upper side surfaces of the upper fixed seat and the movable connecting seat respectively have two axially extending convex ribs, the upper end of the belt rotating shaft is vertically connected to the lower side of one end of the upper fixed seat and the lower end of the belt rotating shaft is abutted against the upper side of one end of the lower fixed seat, and the fixed connecting seat is clamped and fixed between one end of the upper fixed seat away from the belt rotating shaft and one end of the lower fixed seat away from the belt rotating shaft. The upper fixed seat and the lower fixed seat are connected to each other and fix the fixed connecting seat at the same time, and the convex ribs can strengthen the strength of the upper fixed seat and the rope pulling seat body.

[0012] In the above-mentioned adjustable pull rope mechanism, an upper connecting shaft is provided at the lower side of one end of the upper fixed seat away from the belt rotating shaft, a lower connecting shaft corresponding to the upper connecting shaft is provided at the upper side of one end of the lower fixed seat, one end of the fixed connecting seat has a fixed sleeve sleeved on the lower connecting shaft, the lower end of the fixed sleeve is abutted against the upper side of the lower fixed seat, and one end of the fixed connecting seat has a limiting portion abutting against the lower side of the upper fixed seat, and the limiting portion has an arc groove matching the outer side of the upper connecting shaft, a limiting column located between the belt rotating shaft and the upper connecting shaft is provided at the lower side of the middle part of the upper fixed seat, and one end of the limiting portion has a limiting notch engaged with the limiting column. The fixed connecting seat is connected to the upper connecting shaft and the lower connecting shaft through the fixed sleeve, and the limiting notch of the limiting portion can be connected with the limiting column, which plays a role in fixing the fixed connecting seat and improving the stability of the fixed connecting seat and the movable connecting seat.

[0013] In the above-mentioned adjustable pull rope mechanism, a first mounting screw hole and a second mounting screw hole are vertically distributed between the upper fixed seat and the lower fixed seat and respectively penetrate the upper fixed seat and the lower fixed seat, the first mounting screw hole penetrates the belt rotating shaft and the second mounting screw hole penetrates the upper connecting shaft and the lower connecting shaft, and mounting bolts connected to the telescopic rail are respectively provided in the first mounting screw hole and the second mounting screw hole from bottom to top.

[0014] Compared with the existing technology, the advantages of the utility model are:

[0015] 1. The device uses a multi-speed adjustment connection assembly to connect the fixed seat body with the pull rope seat body. When the pull rope is loose, the upper teeth and the lower teeth are adjusted in sequence to keep the pull rope in a tensioned state, thereby increasing the service life of the pull rope.

[0016] 2. The fixed seat body of the device is connected to the pull rope seat body through a fixed connecting seat, and the limiting part of the fixed connecting seat and the limiting column are mutually engaged, which plays a certain fixing role and improves the connection stability between the upper teeth and the lower teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a structural explosion diagram of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the pull rope seat body in the utility model.

[0020] Figure 4 It is a structural schematic diagram of the utility model when in use.

[0021] In the figure: belt 1, draw rope 11, draw rope assembly 2, fixed seat body 3, belt rotating shaft 31, draw rope connecting part 32, upper fixed seat 33, lower fixed seat 34, convex rib 35, upper connecting shaft 36, lower connecting shaft 37, limiting column 38, draw rope seat body 4, multi-speed adjustment connection structure 5, fixed connecting seat 51, movable connecting seat 52, fixed sleeve 53, limiting part 54, arc groove 55, limiting notch 56, multi-speed adjustment connection assembly 6, upper teeth 61, lower teeth 62, first mounting screw hole 7, second mounting screw hole 71. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] like Figure 1-4 As shown, an adjustable drawstring mechanism is installed in a telescopic track, including a drawstring assembly 2 connected to a belt 1 at one end and to a drawstring 11 at the other end. The drawstring assembly 2 is a split structure and has a fixed seat body 3 for connecting to the belt 1 and a drawstring seat body 4 for connecting to the drawstring 11. The drawstring seat body 4 and the fixed seat body 3 are axially adjacently arranged, and the drawstring seat body 4 and the fixed seat body 3 are connected by a multi-stage adjustment connection structure 5 that can make the drawstring seat body 4 approach or move away from the fixed seat body 3 to adjust the axial length of the drawstring assembly 2. The drawstring 11 is connected to the drawstring seat body 4, and the drawstring seat body 4 is connected to the fixed seat body 3 through the multi-stage adjustment connection structure 5. The multi-stage adjustment connection structure 5 can keep the drawstring 11 in a tensioned state, thereby extending the service life of the drawstring 11.

[0024] The pull rope assembly 2 is axially extended along the telescopic track, and the fixed seat body 3 is fixedly arranged in one of the track bodies of the telescopic track, and the pull rope seat body 4 is axially movable relative to the pull rope seat body 4 .

[0025] like Figure 4 As shown, the end of the fixed seat body 3 away from the pull rope seat body 4 has a belt rotating shaft 31 for winding the belt 1, and the end of the pull rope seat body 4 away from the fixed seat body 3 has a pull rope connecting part 32 for connecting with the pull rope 11.

[0026] like Figure 1 As shown, the multi-speed adjustment connection structure 5 is a concave-convex multi-speed adjustment connection structure.

[0027] Combination Figure 2 and Figure 3As shown, the multi-level adjustment connection structure 5 includes a fixed connection seat 51 arranged at one end of the fixed seat body 3 close to the rope pull seat body 4, and the rope pull seat body 4 has a movable connection seat 52 at one end close to the fixed seat body 3, and the movable connection seat 52 and the fixed connection seat 51 are staggered up and down, and the movable connection seat 52 is located above the fixed connection seat 51, and a multi-level adjustment connection assembly 6 is arranged between the movable connection seat 52 and the fixed connection seat 51. The movable connection seat 52 and the fixed connection seat 51 are staggered up and down, which is conducive to the adjustment between the fixed seat body 3 and the rope pull seat body 4.

[0028] The multi-speed adjustment connection assembly 6 includes a plurality of upper teeth 61 axially arranged in sequence on the lower side of the movable connection seat 52, and a plurality of lower teeth 62 axially arranged in sequence on the upper side of the fixed connection seat 51, and the upper teeth 61 and the lower teeth 62 are meshed with each other. The upper teeth 61 and the lower teeth 62 are adjusted according to the degree of slack of the pull rope 11 to put the pull rope 11 in a tensioned state.

[0029] Specifically, the fixed seat body 3 is a split structure with upper and lower parts, and the fixed connecting seat 51 is clamped and fixed in the fixed seat body 3. The fixed seat body 3 is connected to the fixed connecting seat 51, and the fixed seat body 3 is connected to the pull rope seat body 4 through the fixed connecting seat 51.

[0030] Further, the fixed seat body 3 includes an upper fixed seat 33 and a lower fixed seat 34 which are arranged in correspondence and parallel to each other, the upper fixed seat 33 is located on one side of the movable connection seat 52 and is located on the same horizontal plane as the movable connection seat 52, and the upper side surfaces of the upper fixed seat 33 and the movable connection seat 52 respectively have two axially extending convex ribs 35, the upper end of the belt rotating shaft 31 is vertically connected to the lower side of one end of the upper fixed seat 33 and the lower end of the belt rotating shaft 31 is abutted against the upper side of one end of the lower fixed seat 34, and the fixed connection seat 51 is clamped and fixed between one end of the upper fixed seat 33 away from the belt rotating shaft 31 and one end of the lower fixed seat 34 away from the belt rotating shaft 31. The upper fixed seat 33 and the lower fixed seat 34 are connected to each other and fix the fixed connection seat 51 at the same time, and the convex ribs 35 can strengthen the strength of the upper fixed seat 33 and the pull rope seat body 4.

[0031] Furthermore, an upper connecting shaft 36 is provided on the lower side of one end of the upper fixed seat 33 away from the belt rotating shaft 31, and a lower connecting shaft 37 corresponding to the upper connecting shaft 36 is provided on the upper side of one end of the lower fixed seat 34. One end of the fixed connecting seat 51 has a fixed sleeve 53 sleeved on the lower connecting shaft 37, the lower end of the fixed sleeve 53 is abutted against the upper side of the lower fixed seat 34, and one end of the fixed connecting seat 51 has a limiting portion 54 abutting against the lower side of the upper fixed seat 33, and the limiting portion 54 has an arc groove 55 matching the outer side of the upper connecting shaft 36, and a limiting column 38 is provided on the lower side of the middle part of the upper fixed seat 33, and one end of the limiting portion 54 has a limiting notch 56 engaged with the limiting column 38. The fixed connecting seat 51 is connected to the upper connecting shaft 36 and the lower connecting shaft 37 through the fixing sleeve 53, and the limiting notch 56 of the limiting part 54 is connectable with the limiting column 38, which plays the role of fixing the fixed connecting seat 51 and improving the stability of the fixed connecting seat 51 and the movable connecting seat 52.

[0032] At the same time, a first mounting screw hole 7 and a second mounting screw hole 71 are vertically distributed between the upper fixed seat 33 and the lower fixed seat 34 and respectively penetrate the upper fixed seat 33 and the lower fixed seat 34, the first mounting screw hole 7 penetrates the belt rotating shaft 31 and the second mounting screw hole 71 penetrates the upper connecting shaft 36 and the lower connecting shaft 37, and mounting bolts connected to the telescopic rail are respectively provided in the first mounting screw hole 7 and the second mounting screw hole 71 from bottom to top.

[0033] The principle of this embodiment is:

[0034] The upper fixed seat 33 and the lower fixed seat 34 are connected to each other, and the fixed connecting seat 51 is arranged between the upper connecting shaft 36 and the lower connecting shaft 37 through the limiting portion 54. At the same time, the limiting notch 56 of the limiting portion 54 is connected to the limiting column 38, connecting the belt 1 to the belt rotating shaft 31, and then the pull rope 11 is connected to the pull rope connecting portion 32 of the pull rope seat body 4, and then the upper teeth 61 of the pull rope seat body 4 and the lower teeth 62 of the fixed connecting seat 51 are meshed with each other. When the pull rope 11 is loose, the upper teeth 61 and the lower teeth 62 are adjusted to make the pull rope 11 in a tensioned state.

[0035] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0036] Although this article uses more terms such as belt 1, drawstring 11, drawstring assembly 2, fixed seat body 3, belt rotating shaft 31, drawstring connecting part 32, upper fixed seat 33, lower fixed seat 34, convex rib 35, upper connecting shaft 36, lower connecting shaft 37, limiting column 38, drawstring seat body 4, multi-speed adjustment connection structure 5, fixed connecting seat 51, movable connecting seat 52, fixed sleeve 53, limiting part 54, arc groove 55, limiting notch 56, multi-speed adjustment connection assembly 6, upper teeth 61, lower teeth 62, first mounting screw hole 7, second mounting screw hole 71, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. An adjustable drawstring mechanism, mounted in a telescopic track, comprising a drawstring assembly (2) connected to a belt (1) at one end and to a drawstring (11) at the other end, characterized in that: The draw rope assembly (2) is a split structure and comprises a fixed seat body (3) for connecting to the belt (1) and a draw rope seat body (4) for connecting to the draw rope (11); the draw rope seat body (4) and the fixed seat body (3) are axially adjacently arranged, and the draw rope seat body (4) and the fixed seat body (3) are connected via a multi-stage adjustment connection structure (5) which enables the draw rope seat body (4) to move closer to or farther from the fixed seat body (3) so as to adjust the axial length of the draw rope assembly (2).

2. The adjustable pull rope mechanism according to claim 1, characterized in that: The pull rope assembly (2) is arranged to extend axially along the telescopic track, and the fixed seat body (3) is fixedly arranged in one of the track bodies of the telescopic track, and the pull rope seat body (4) is axially movable relative to the pull rope seat body (4).

3. The adjustable pull rope mechanism according to claim 1, characterized in that: The end of the fixed seat body (3) away from the pull rope seat body (4) has a belt rotating shaft (31) for winding the belt (1), and the end of the pull rope seat body (4) away from the fixed seat body (3) has a pull rope connecting part (32) for connecting with the pull rope (11).

4. An adjustable pull rope mechanism according to claim 1, 2 or 3, characterized in that: The multi-speed adjustment connection structure (5) is a concave-convex multi-speed adjustment connection structure.

5. The adjustable pull rope mechanism according to claim 3, characterized in that: The multi-speed adjustment connection structure (5) comprises a fixed connection seat (51) arranged at one end of the fixed seat body (3) close to the pull rope seat body (4), and the pull rope seat body (4) has a movable connection seat (52) at one end close to the fixed seat body (3), and the movable connection seat (52) and the fixed connection seat (51) are staggered up and down and the movable connection seat (52) is located above the fixed connection seat (51), and a multi-speed adjustment connection component (6) is provided between the movable connection seat (52) and the fixed connection seat (51).

6. The adjustable pull rope mechanism according to claim 5, characterized in that: The multi-speed adjustment connection assembly (6) comprises a plurality of upper teeth (61) axially arranged in sequence on the lower side of the movable connection seat (52), and a plurality of lower teeth (62) axially arranged in sequence on the upper side of the fixed connection seat (51), and the upper teeth (61) and the lower teeth (62) are meshed with each other.

7. The adjustable pull rope mechanism according to claim 5, characterized in that: The fixed seat body (3) is a split structure with upper and lower parts, and the fixed connecting seat (51) is clamped and fixed in the fixed seat body (3).

8. The adjustable pull rope mechanism according to claim 7, characterized in that: The fixed seat body (3) comprises an upper fixed seat (33) and a lower fixed seat (34) which correspond to each other and are arranged in parallel. The upper fixed seat (33) is located on one side of the movable connection seat (52) and is located on the same horizontal plane as the movable connection seat (52). The upper side surfaces of the upper fixed seat (33) and the movable connection seat (52) respectively have two axially extending convex ribs (35). The upper end of the belt rotating shaft (31) is vertically connected to the lower side of one end of the upper fixed seat (33) and the lower end of the belt rotating shaft (31) is abutted against the upper side of one end of the lower fixed seat (34). The fixed connection seat (51) is clamped and fixed between one end of the upper fixed seat (33) away from the belt rotating shaft (31) and one end of the lower fixed seat (34) away from the belt rotating shaft (31).

9. The adjustable pull rope mechanism according to claim 8, characterized in that: An upper connecting shaft (36) is provided on the lower side of one end of the upper fixed seat (33) away from the belt rotating shaft (31); a lower connecting shaft (37) corresponding to the upper connecting shaft (36) is provided on the upper side of one end of the lower fixed seat (34); one end of the fixed connecting seat (51) has a fixed sleeve (53) sleeved on the lower connecting shaft (37); the lower end of the fixed sleeve (53) is abutted against the upper side of the lower fixed seat (34); one end of the fixed connecting seat (51) has a limiting portion (54) abutting against the lower side of the upper fixed seat (33); the limiting portion (54) has an arc groove (55) matching the outer side of the upper connecting shaft (36); a limiting column (38) located between the belt rotating shaft (31) and the upper connecting shaft (36) is provided on the lower side of the middle part of the upper fixed seat (33); one end of the limiting portion (54) has a limiting notch (56) engaged with the limiting column (38).

10. The adjustable pull rope mechanism according to claim 9, characterized in that: A first mounting screw hole (7) and a second mounting screw hole (71) are vertically distributed between the upper fixing seat (33) and the lower fixing seat (34) and respectively penetrate the upper fixing seat (33) and the lower fixing seat (34); the first mounting screw hole (7) penetrates the belt rotating shaft (31) and the second mounting screw hole (71) penetrates the upper connecting shaft (36) and the lower connecting shaft (37); and mounting bolts connected to the telescopic track are respectively provided in the first mounting screw hole (7) and the second mounting screw hole (71) from bottom to top.

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