Sectional type transmission rack for electric curtain

Abstract

The utility model relates to the technical field of curtains, in particular to a sectional type transmission rack for an electric curtain, each transmission unit comprises a rack body and a conductive component, and the rack body is provided with a first positioning mechanism. A second positioning mechanism used for preliminarily positioning the rack body and the curtain frame and a locking mechanism used for locking the rack body and the curtain frame are arranged between the rack body and the curtain frame, the conductive assembly comprises a sliding contact line clamped in the rack body, and the end of the sliding contact line is provided with a conductive connector used for being in conductive contact with the sliding contact line of the adjacent transmission unit; according to the utility model, the rack bodies of the adjacent transmission units are inserted, positioned and spliced by using the first positioning mechanism, and the adjacent sliding contact lines are conducted by the conductive joints, so that the transmission racks with different length specifications are spliced and formed; the transmission rack and the curtain frame are fixed through the second positioning mechanism and the locking mechanism to form the curtain rails of different length specifications, the processes of traditional on-site measurement, cutting, secondary assembly and the like are omitted, and the transportation cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of curtain technology, and in particular to a segmented transmission rack for electric curtains. Background Technology

[0002] Electric curtains generally consist of a curtain track and a traction mechanism that moves back and forth along the track. The curtain track includes a curtain frame and a transmission rack located inside the frame that meshes with the drive gear of the traction mechanism. Current curtain tracks are typically custom-made products, requiring on-site measurement and cutting / assembly. This necessitates travel between the installation site and the production site, a cumbersome and time-consuming process. Furthermore, the cut and assembled curtain track is a single, elongated strip, significantly increasing transportation costs. Therefore, there is an urgent need for a modular curtain track to reduce both time and transportation costs. Utility Model Content

[0003] The technical problem to be solved by this utility model is that, in order to solve the problem that the existing curtain tracks are generally custom-made products, which require on-site measurement and cutting and assembly according to the measured dimensions, and require back-and-forth between the installation site and the production site, the process is cumbersome and time-consuming. In addition, the curtain track after cutting and assembly is a one-piece long strip, which greatly increases the transportation cost. The present invention provides a segmented transmission rack for electric curtains.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a segmented transmission rack for electric curtains, which is located inside the curtain frame and is in transmission cooperation with the drive gear of the traction drive mechanism, so that the traction drive mechanism reciprocates along the length direction of the transmission rack. The transmission rack includes several transmission units spliced ​​together in sequence, and each transmission unit includes:

[0005] The rack body has a first positioning mechanism at its end along its length for inserting and positioning with the rack body of the adjacent transmission unit, and a second positioning mechanism for initially positioning the rack body and the curtain frame and a locking mechanism for locking the rack body and the curtain frame are provided.

[0006] The conductive components include a sliding contact line extending along the length of the rack body and fitted inside the rack body, the sliding contact line being in conductive contact with the conductive part of the traction drive mechanism and the end of the sliding contact line being provided with a conductive connector for conductive contact with the sliding contact line of an adjacent transmission unit.

[0007] Furthermore, the first positioning mechanism includes a positioning protrusion protruding from one end face of the rack body and a positioning hole recessed into the other end face of the rack body for the positioning protrusion to be inserted.

[0008] Furthermore, the locking mechanism includes a latch and a locking groove located on the rack body and the curtain frame respectively, and the latch and the locking groove are multiple and distributed at intervals along the length direction of the transmission unit.

[0009] Furthermore, the conductive connector includes stationary contacts located at both ends of the sliding contact line and a resiliently arranged moving contact.

[0010] Furthermore, the second positioning mechanism includes positioning bosses located at both ends of the rack body and both ends of the curtain frame, and positioning grooves into which the positioning bosses engage.

[0011] Furthermore, the rack body has first insertion portions formed on both sides along its width direction, and the inner peripheral wall of the curtain frame has a first insertion cavity for the first insertion portions to be inserted into.

[0012] The curtain frame has second insertion portions formed on both sides along its width direction, and the rack body has a second insertion cavity for the second insertion portions to be inserted.

[0013] Furthermore, the rack body has a plurality of spaced-apart snap-fit ​​posts along its length, and the plurality of snap-fit ​​posts are arranged side by side to form one side cavity wall of the second insertion cavity.

[0014] Furthermore, the sliding contact line includes a conductive post and a protruding edge extending along the width direction of the conductive post;

[0015] The rack body has several spaced buckles protruding along its length, and a groove is formed between the buckles and the rack body for the protruding edge to engage.

[0016] Furthermore, the rack body includes a plurality of spaced transmission teeth and ribs for connecting the plurality of transmission teeth, and a raceway is formed between the ribs and the rack body for the traction wheel of the traction drive mechanism to roll.

[0017] Furthermore, the rack body is made of insulating material and is injection molded.

[0018] The beneficial effects of this utility model are as follows: This utility model uses a first positioning mechanism to insert and position the rack bodies of adjacent transmission units to complete the splicing, and a conductive connector to conduct adjacent sliding contact lines, thereby splicing to form transmission racks of different lengths. Furthermore, the second positioning mechanism and locking mechanism are used to fix the transmission racks and curtain frames to form curtain tracks of different lengths, eliminating the need for traditional on-site measurement, cutting, and secondary assembly processes, and reducing transportation costs. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is an exploded view of this utility model;

[0022] Figure 3 This is a side view of the present invention;

[0023] Figure 4 This is a three-dimensional schematic diagram of the rack body from a first-person perspective;

[0024] Figure 5 yes Figure 4 A magnified view of part A in the middle;

[0025] Figure 6 This is a three-dimensional schematic diagram of the rack body from a second perspective;

[0026] Figure 7 yes Figure 6 A magnified view of part B in the middle section;

[0027] Figure 8 This is a schematic diagram of the conductive connector.

[0028] Figure 9 This is an assembly diagram of the transmission unit and the curtain rod;

[0029] Figure 10 This is a breakdown diagram of the transmission unit and the curtain rod;

[0030] Figure 11 It refers to the cross-sectional shape of the rack body at different locations;

[0031] In the picture:

[0032] 100. Transmission unit;

[0033] 1. Rack body; 101. Positioning protrusion; 102. Positioning hole; 103. Lock; 104. Positioning boss; 105. First insertion part; 106. Second insertion cavity; 107. Snap-fit ​​post; 108. Snap-fit; 109. Transmission gear; 110. Rib; 111. Positioning strip;

[0034] 2. Conductive components; 201. Sliding contact line; 2011. Conductive post; 2012. Raised edge; 2013. Notch; 202. Conductive connector; 202a. Stationary contact; 202b. Moving contact;

[0035] 3. Curtain rod; 301. Lock groove; 302. Positioning groove; 303. First insertion cavity; 304. Second insertion part. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention. Therefore, they only show the components relevant to the present invention. Orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0037] like Figure 1 and Figure 2 As shown, a segmented transmission rack for electric curtains is located inside the curtain frame 3 and is driven by the drive gear of the traction drive mechanism to make the traction drive mechanism reciprocate along the length of the transmission rack. The transmission rack includes a number of sequentially spliced ​​transmission units 100, which have different length specifications. The curtain frame 3 includes a number of sequentially spliced ​​frame units, which also have different length specifications. The number of transmission units 100 corresponds one-to-one with the number of frame units, and each transmission unit 100 is fixed in its corresponding frame unit. When two adjacent frame units are spliced, the corresponding transmission units 100 fixed in the frame unit are also spliced ​​synchronously to form the required curtain track. Each transmission unit 100 includes a rack body 1 and a conductive component 2.

[0038] The rack body 1 is provided with a first positioning mechanism at its end along its length direction for inserting and positioning with the rack body 1 of the adjacent transmission unit 100. When two adjacent frame units are spliced ​​together, the two transmission units 100 that are correspondingly locked in the two frame units are inserted and cooperated through the first positioning mechanism to achieve lateral and longitudinal positioning of the two. Furthermore, a second positioning mechanism for initially positioning the rack body 1 and the curtain frame 3 and a locking mechanism for locking the two are provided between the rack body 1 and the curtain frame 3.

[0039] The conductive component 2 includes a sliding contact line 201 extending along the length of the rack body 1 and being engaged within the rack body 1. The length of the sliding contact line 201 is equal to the length of the corresponding rack body 1. The sliding contact line 201 is in conductive contact with the conductive part of the traction drive mechanism, and the end of the sliding contact line 201 is provided with a conductive connector 202 for conductive contact with the sliding contact line 201 of the adjacent transmission unit 100. When two adjacent rack bodies 1 are inserted and engaged, the sliding contact lines 201 engaged within the two rack bodies 1 are interconnected through the conductive connectors 202 at their ends.

[0040] First, the sliding contact line 201 is inserted into its corresponding rack body 1 to form a transmission unit 100. Then, the transmission unit 100 and its corresponding frame unit are positioned by the second positioning mechanism and locked by the locking mechanism. The two are assembled to form a track unit. Multiple track units are spliced ​​together in sequence to form a curtain track of a predetermined length. During the process, while two adjacent frame units are spliced ​​and fixed, two adjacent rack bodies 1 are inserted and positioned by the first positioning mechanism, and two adjacent sliding contact lines 201 are interconnected by a conductive connector 202. The traction drive mechanism can move back and forth along the curtain track to open or close the curtain.

[0041] In some examples, such as Figures 4-7 As shown, the first positioning mechanism includes a positioning protrusion 101 protruding from one end face of the rack unit and a positioning hole 102 recessed in the other end face of the rack unit for the positioning protrusion 101 to be inserted. The positioning protrusion 101 and the positioning hole 102 are provided in corresponding shape and number. The number can be, but is not limited to, one, two or three. The positioning protrusion 101 is preferably cylindrical, and the end of the positioning protrusion 101 away from the rack body 1 is tapered, which is more conducive to the insertion of the positioning protrusion 101 into the positioning hole 102. In this embodiment, there are five positioning protrusions 101, which are arranged linearly. The cross-sectional area of ​​the positioning protrusion 101 in the middle is larger than the cross-sectional area of ​​the other positioning protrusions 101.

[0042] In some examples, such as Figure 9 and Figure 10 As shown, the locking mechanism includes a latch 103 located on the rack body 1 and the curtain frame 3, and a locking groove 301 into which the latch 103 engages. There are multiple latches 103 and locking grooves 301, which are spaced apart along the length of the transmission unit 100. In this embodiment, the latch 103 is located on the rack body 1, and the locking groove 301 is located on the curtain frame 3. The latch 103 has a certain elasticity and can be engaged in the locking groove 301 under external force to lock the rack body 1 and the curtain frame 3.

[0043] In some examples, such as Figure 8 As shown, the conductive connector 202 includes a stationary contact 202a and a movable contact 202b located at both ends of the sliding contact line 201. Both the stationary contact 202a and the movable contact 202b are pressed into the inner hole of the sliding contact line 201 to achieve a tight fit. The stationary contact 202a does not protrude from the sliding contact line 201 and can be a solid structure or a hollow structure with one end blocked. When the movable contact 202b contacts the stationary contact 202a, the two adjacent sliding contact lines 201 are connected.

[0044] In some examples, such as Figure 10As shown, the second positioning mechanism includes positioning bosses 104 located at both ends of the rack body 1 and the curtain frame 3, respectively, and positioning grooves 302 into which the positioning bosses 104 are engaged. The positioning bosses 104 and the positioning grooves 302 are matched in shape and are approximately rectangular.

[0045] In some examples, such as Figures 4-7 As shown, the rack body 1 has a first insertion part 105 formed on both sides along its width direction, and the inner peripheral wall of the curtain frame 3 has a first insertion cavity 303 for the first insertion part 105 to be inserted into. Both the first insertion part 105 and the first insertion cavity 303 extend along the length direction of the transmission unit 100.

[0046] The curtain frame 3 has a second insertion portion 304 formed on both sides along its width direction, and the rack body 1 has a second insertion cavity 106 for the second insertion portion 304 to be inserted into. The second insertion portion 304 and the second insertion cavity 106 also extend along the length direction of the transmission unit 100.

[0047] When the transmission unit 100 is assembled with the frame unit, the first insertion part 105 is inserted into the first insertion cavity 303, and the second insertion part 304 is inserted into the second insertion cavity 106, forming a cross-lock, which further improves the connection strength between the transmission unit 100 and the curtain rod 3.

[0048] In some examples, such as Figure 4 and Figure 5 As shown, the rack body 1 has a plurality of spaced-apart locking posts 107 along its length direction. The plurality of locking posts 107 are arranged side by side to form one side cavity wall of the second insertion cavity 106. The spaced-apart locking posts 107 can leave space for the locking buckle 103, and also facilitate the insertion of the second insertion part 304.

[0049] In some examples, such as Figure 8 As shown, the sliding contact line 201 includes a conductive post 2011 and a protruding edge 2012 that protrudes along the width direction of the conductive post 2011. There are two protruding edges 2012, and each protruding edge 2012 extends along the length direction of the conductive post 2011. The conductive post 2011 has a notch 2013, and the protruding edge 2012 can extend from the notch 2013. The rack body 1 has a positioning strip 111 that protrudes in the direction of the sliding contact line 201 for inserting into the notch 2013 to position the sliding contact line 201.

[0050] The rack body 1 has a plurality of spaced buckles 108 protruding along its length direction, and a groove is formed between the buckles 108 and the rack body 1 for the protruding edge 2012 to be engaged.

[0051] In some examples, such as Figure 6 and Figure 7As shown, the rack body 1 includes a plurality of spaced transmission teeth 109 and ribs 110 for connecting the plurality of transmission teeth 109. The ribs 110 can improve the structural strength of the transmission teeth, and a raceway is formed between the ribs 110 and the rack body 1 for the traction wheel of the traction drive mechanism to roll. The traction wheel can reciprocate along the raceway.

[0052] In some examples, the rack body 1 is made of an insulating material, which can be, but is not limited to, plastic. Plastic is lightweight and inexpensive, and the rack body 1 is injection molded, possessing high strength and rigidity. The rack body 1 has different cross-sectional shapes along its length, such as... Figure 11 As shown.

[0053] Working principle:

[0054] First, the protruding edge 2012 of the sliding contact line 201 is inserted into the slot of its corresponding rack body 1 to form a transmission unit 100. Then, the positioning boss 104 of the rack body is inserted into the positioning slot 302 on the curtain frame 3 for positioning. At the same time, the first insertion part 105 is inserted into the first insertion cavity 303, the second insertion part 304 is inserted into the second insertion cavity 106, and the latch 103 is inserted into the locking slot 301. At this time, the transmission unit 100 and its corresponding frame unit are assembled to form a track unit. Multiple track units are spliced ​​together in sequence to form a curtain track of a predetermined length. During the process, while two adjacent frame units are spliced ​​and fixed, two adjacent rack bodies 1 are inserted and positioned by the positioning protrusion 101 and the positioning hole 102. Two adjacent sliding contact lines 201 are connected to each other by the conductive connector 202. The traction drive mechanism can move back and forth along the curtain track to realize the opening or closing of the curtain.

[0055] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A segmented transmission rack for electric curtains, located inside the curtain frame (3) and engaging with the drive gear of the traction drive mechanism to cause the traction drive mechanism to reciprocate along the length of the transmission rack, characterized in that: The transmission rack comprises several transmission units (100) connected sequentially, each transmission unit (100) including: The rack body (1) has a first positioning mechanism at its end along its length for inserting and positioning with the rack body (1) of the adjacent transmission unit (100), and a second positioning mechanism for initially positioning the rack body (1) and the curtain frame (3) and a locking mechanism for locking the rack body (1) and the curtain frame (3) are provided. The conductive component (2) includes a sliding contact line (201) extending along the length of the rack body (1) and locked inside the rack body (1). The sliding contact line (201) is in conductive contact with the conductive part of the traction drive mechanism, and the end of the sliding contact line (201) is provided with a conductive connector (202) for conductive contact with the sliding contact line (201) of the adjacent transmission unit (100).

2. A segmented drive rack for an electric window blind according to claim 1, wherein: The first positioning mechanism includes a positioning protrusion (101) protruding from one end face of the rack body (1) and a positioning hole (102) recessed into the other end face of the rack body (1) for the positioning protrusion (101) to be inserted.

3. A segmented drive rack for an electrically operated window covering according to claim 1, wherein: The locking mechanism includes a latch (103) located on the rack body (1) and the curtain frame (3) respectively, and a locking groove (301) into which the latch (103) engages. The latch (103) and the locking groove (301) are multiple and are spaced apart along the length of the transmission unit (100).

4. A segmented drive rack for a motorized window treatment according to claim 1, wherein: The conductive connector (202) includes a stationary contact (202a) located at both ends of the sliding contact line (201) and a movable contact (202b) that is elastically arranged.

5. A segmented drive rack for a motorized window treatment according to claim 1, wherein: The second positioning mechanism includes positioning bosses (104) located at both ends of the rack body (1) and the curtain frame (3) respectively, and positioning grooves (302) into which the positioning bosses (104) are engaged.

6. A segmented drive rack for a motorized window treatment according to claim 1, wherein: The rack body (1) has a first insertion part (105) formed on both sides along its width direction, and the inner peripheral wall of the curtain frame (3) has a first insertion cavity (303) for the first insertion part (105) to be inserted. The curtain frame (3) has a second insertion part (304) formed on both sides along its width direction, and the rack body (1) has a second insertion cavity (106) for the second insertion part (304) to be inserted.

7. A segmented drive rack for a motorized window treatment according to claim 6, wherein: The rack body (1) has a plurality of spaced snap-fit ​​posts (107) along its length direction, and the plurality of snap-fit ​​posts (107) are arranged side by side to form one side cavity wall of the second insertion cavity (106).

8. A segmented drive rack for a motorized window treatment according to claim 1, wherein: The sliding contact line (201) includes a conductive post (2011) and a protruding edge (2012) extending along the width direction of the conductive post (2011); The rack body (1) has a plurality of spaced buckles (108) protruding along its length direction, and a groove is formed between the buckles (108) and the rack body (1) for the protruding edge (2012) to be engaged.

9. A segmented drive rack for a motorized window treatment according to claim 1, wherein: The rack body (1) includes a plurality of spaced transmission teeth (109) and ribs (110) for connecting the plurality of transmission teeth (109). A raceway is formed between the ribs (110) and the rack body (1) for the traction wheel of the traction drive mechanism to roll.

10. A segmented drive rack for a motorized window treatment according to claim 1, wherein: The rack body (1) is made of insulating material and is injection molded.

Images