A transmission structure for louvers

Abstract

This utility model relates to the field of venetian blind technology, and in particular to a transmission structure for a venetian blind, including a window frame and multiple slats. A transmission rod is symmetrically arranged on both sides of the window frame. Each slat has a connector at both ends, the connector being Z-shaped. One end of the connector is rotatably connected to the window frame and fixedly connected to the slat, while the other end has a pressing pin. One side of the transmission rod has a slot for engaging with the pressing pin. Through the cooperation of the connector at the end of the slat and the transmission rod, the connector, with its pressing pin, engages with the slot of the transmission rod, allowing for installation without tools, facilitating installation and saving time and effort.

Description

Technical Field

[0001] This utility model relates to the technical field of venetian blinds, and in particular to a transmission structure for venetian blinds. Background Technology

[0002] Venetian blinds are a type of window that offers advantages such as privacy protection and blocking sunlight and ultraviolet rays. The current transmission structure of Venetian blinds mainly consists of a window frame and slats. Symmetrical transmission rods are arranged on both sides of the window frame, and a handle drives one of these rods to slide up and down. Each slat has a connector at both ends. The transmission rods at both ends of the window connect these connectors and together drive the connectors to swing. Specifically, one end of the connector is fixedly connected to the end of the slat, and the other end is fixedly installed on the transmission rod, thus causing the slats to rotate. However, this installation structure of transmission rods and connectors is too complex. The connectors need to be riveted to the transmission rods using tools, making the installation of current Venetian blinds very troublesome, time-consuming, and labor-intensive. Utility Model Content

[0003] The present invention provides a transmission structure for a louver to solve the aforementioned problems and facilitate installation.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a transmission structure for a louver, comprising a window frame and multiple blades, with transmission rods symmetrically arranged on both sides of the window frame, and connectors provided at both ends of each blade. The connectors are Z-shaped, with one end of the connector rotatably connected to the window frame and fixedly connected to the blade, and the other end provided with a pressing pin. A slot for the pressing pin is provided on one side of the transmission rod.

[0005] Furthermore, the connector includes a swinging part, one end of which is provided with an expansion tube, the expansion tube being provided with a screw for fixing the connecting blade, and the pressing pin being provided at the other end of the swinging part.

[0006] Furthermore, the top of the pressing pin is a cylinder a, and the bottom of the pressing pin is provided with a cylinder b connected to the swing part. A conical part is provided between the cylinder a and the cylinder b. The conical part gradually slopes outward from the cylinder a to the cylinder b, and the outer diameter of the conical part is larger than that of the cylinder a and the cylinder b.

[0007] Furthermore, the outer diameter of cylinder a is smaller than the outer diameter of cylinder b.

[0008] Furthermore, the outer diameter of the cylinder b corresponds to the slot opening.

[0009] Furthermore, the slot opening is provided with a tightening strip, and a boss protrudes from the center of the slot bottom, with multiple positioning holes on the boss that cooperate with the pressing pin.

[0010] Compared with the prior art, the beneficial effects of this utility model are: by using the connecting part and the transmission rod at the end of the blade, the connecting part is provided with a pressing pin and is interlocked with the slot of the transmission rod, so that installation can be completed without the need for tools, which is convenient, time-saving and labor-saving. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 This is a three-dimensional schematic diagram of the connector in this utility model.

[0013] Figure 3 This is a three-dimensional schematic diagram of the transmission rod in this utility model.

[0014] Figure 4 This is a schematic diagram showing the connection between the pressing pin and the transmission rod in this utility model.

[0015] In the diagram: 1. Window frame; 2. Blade; 10. Connector; 20. Transmission rod; 30. Expansion tube; 40. Press pin; 50. Swing part; 200. Slot; 201. Tightening strip; 202. Positioning hole; 401. a. Cylinder; 402. b. Cylinder; 403. Conical part. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] As shown in the attached figure, the present invention discloses a transmission structure for a venetian blind, comprising a window frame 1 and multiple blades 2. The multiple blades 2 are arranged inside the window frame 1. Transmission rods 20 are symmetrically arranged on both sides of the window frame 1. Each blade 2 has a connector 10 at both ends, and the connectors 10 are located on both sides of the window frame 1. The connectors 10 are Z-shaped. One end of the connector 10 is rotatably connected to the window frame 1 and fixedly connected to the blade 2, and the other end is provided with a pressing pin 40. One side of the transmission rod 20 is provided with a slot 200 for snapping into the pressing pin 40. As shown in the figure, the slot 200 passes through both ends of the transmission rod 20, that is, the multiple connectors 10 on one side of the window frame 1 are all engaged with the corresponding slots 200 of the transmission rod 20. The blade 2 is connected to the connecting piece 10 and the transmission rod 20 at the end of the blade 2. The connecting piece 10 is equipped with a pressing pin 40, which is interlocked with the slot 200 of the transmission rod 20. The installation can be completed without the need for tools, which is convenient and saves time and effort. After the blade 2 is installed on the window frame 1, the connecting piece 10 is installed on both ends of the blade 2 and the connecting piece 10 and the blade 2 are fixed. The expansion tube 30 is passed through the window frame 1 and inserted into the blade 2. Then, the screw 30 is inserted into the expansion tube 30 to open the expansion tube 30 to abut against the inner wall of the blade 2. After all the connecting pieces 10 are installed, the transmission rod 20 is installed on both sides of the window frame 1. The slot 200 of the transmission rod 20 faces the pressing pin 40 of the connecting piece 10. By pressing the transmission rod 20, the pressing pin 40 is locked into the slot 200 to achieve fixation. Further explanation: The window frame 1 is also equipped with a handle with a fork. A transmission protrusion is set on one of its transmission rods 20. During installation, the transmission protrusion needs to be installed inside the fork. Turning the handle will drive the transmission rod 20 to slide up and down. Then, the up and down sliding of the transmission rod 20 will drive the connecting parts 10 to swing synchronously, thereby realizing the opening and closing of the blade 2.

[0018] Specifically, the connector 10 includes a swing part 50, one end of which is provided with an expansion tube 30. The expansion tube 30 is provided with a screw 300 for fixing the blade 2. The pressing pin 40 is provided at the other end of the swing part 50. As shown in the figure, the expansion tube 30 has multiple expansion blocks distributed in a ring at one end. The expansion blocks do not contact each other. After the screw 300 extends into the expansion tube 30, the screw 300 is used to open up the expansion blocks and thus abut against the inner wall of the blade 2, thereby achieving a fixed connection between the connector 10 and the blade 2. It should be noted that multiple through holes are arranged on both sides of the window frame 1 for the expansion tube 30 to extend into. The connector 10 is set outside the window frame 1 and uses the expansion tube 30 to extend into the window frame 1 to connect with the blade 2.

[0019] Specifically, the top of the pressing pin 40 is a cylinder 401 (a), and the bottom of the pressing pin 40 is provided with a cylinder 402 (b) connected to the swing part 50. A conical part 403 is provided between the cylinder 401 (a) and the cylinder 402 (b). The conical part 403 gradually slopes outward from the cylinder 401 (a) to the cylinder 402 (b). The outer diameter of the conical part 403 is larger than that of the cylinders 401 (a) and 402 (b). On this basis, the outer diameter of the cylinder 401 (a) is smaller than that of the cylinder 402 (b). That is, as shown in the figure, the diameter of the cylinder 401 (a) is smaller than that of the cylinder 402 (b), and the diameter of the cylinder 402 (b) is smaller than the maximum diameter of the conical part 403. When the pressing pin 40 and the slot 200 are engaged, the inclined surface of the conical part 403 opens the slot 200, allowing the cylinder 402 (b) to enter the slot 200.

[0020] Specifically, the outer diameter of the cylinder 402 corresponds to the slot opening of the slot 200.

[0021] Specifically, the slot 200 is provided with a tightening strip 201 at its opening, and a boss protrudes from the center of the bottom of the slot 200. The boss has multiple positioning holes 202 that mate with the pressing pin 40. That is, multiple positioning holes 202 are arranged on the transmission rod 20. These positioning holes 202 are used to mate with cylinder a 401. Preferably, the positioning hole 202 is slightly larger than cylinder a 401. The distance between the two tightening strips 201 corresponds to the diameter of cylinder b 402. During the locking process of the pressing pin 40 and the transmission rod 20, the conical part 403 is used to open the slot 200. The process involves spreading out the two tightening bars 201, installing the connector 10 and the transmission rod 20. After the connector 10 is installed at the end of the blade 2, the slot 200 of the transmission rod 20 faces the connector 10, aligning the positioning hole 202 with the pressing pin 40. When pressing, cylinder a 401 first enters the slot 200 and spreads out the tightening bar 201 through the conical part 403. After the conical part 403 enters the tightening bar 201, cylinder a 401 is positioned in the positioning hole 202. At this time, cylinder b 402 is positioned at the slot 200, that is, between the two tightening bars 201.

[0022] The above embodiments are preferred embodiments of this utility model. All structures similar to this utility model and equivalent changes thereof should fall within the protection scope of this utility model.

Claims

1. A transmission structure for a venetian blind, comprising a window frame and multiple slats, wherein transmission rods are symmetrically arranged on both sides of the window frame, and connecting members are provided at both ends of each slat, characterized in that: The connector is Z-shaped. One end of the connector is rotatably connected to the window frame and fixedly connected to the blade. The other end is provided with a pressing pin. One side of the transmission rod is provided with a slot for a buckle connection to the pressing pin.

2. A transmission structure for a venetian blind according to claim 1, characterized in that: The connector includes a swinging part, one end of which is provided with an expansion tube, and the expansion tube is provided with a screw for fixing the connecting blade. The pressing pin is provided at the other end of the swinging part.

3. A transmission structure for a venetian blind according to claim 2, characterized in that: The top of the pressing pin is a cylinder a, and the bottom of the pressing pin is provided with a cylinder b connected to the swing part. A conical part is provided between the cylinder a and the cylinder b. The conical part gradually slopes outward from the cylinder a to the cylinder b, and the outer diameter of the conical part is larger than that of the cylinder a and the cylinder b.

4. A blind drive according to claim 3 wherein: The outer diameter of cylinder a is smaller than the outer diameter of cylinder b.

5. A transmission structure for a venetian blind according to claim 3, wherein: The outer diameter of cylinder b corresponds to the slot opening.

6. A blind drive according to claim 5 wherein: The slot opening is provided with a tightening strip, and a boss protrudes from the center of the bottom of the slot. The boss is provided with multiple positioning holes that cooperate with the pressing pin.

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