Transmission case of double-layer leaf curtain

Abstract

The utility model belongs to the technical field of curtain accessories, and particularly discloses a transmission case of a double-layer shutter, which comprises a casing, a connecting plate and a cover plate, the connecting plate is arranged on one side of the casing, a first clamping port is arranged on the upper surface of the casing, a first cavity is arranged between the connecting plate and the casing, and a first transmission component is arranged in the first cavity. A cover plate is arranged on the side, away from the shell, of the connecting plate, a clamping hook is arranged on the upper portion of the side, close to the connecting plate, of the cover plate, the clamping hook penetrates through the connecting plate to be clamped to the first clamping opening, a second cavity is formed between the connecting plate and the cover plate, and a second transmission assembly is arranged in the second cavity. And after the lower cover plate is disassembled, the second transmission assembly in the second cavity can be quickly disassembled, after the second transmission assembly is disassembled, the connecting plate can be quickly disassembled, the first transmission assembly in the first cavity can be disassembled, and the transmission box can be quickly disassembled in a clamping mode.

Description

Technical Field

[0001] The utility model relates to the technical field of curtain accessories, in particular to a transmission box for a double-layer page curtain. Background Art

[0002] With the development of society, the control methods and types of curtains are diverse to meet the needs of different occasions. With the development of curtains, due to their functionality and decorativeness, they have become indispensable and perfectly integrated interior decorations in the living room. To enhance the light-blocking effect of the curtain, the curtain usually has a thicker fabric added to the curtain cloth or an additional light-blocking curtain, so that the curtain can be made into a double-layer page curtain for the user to use. A transmission box is usually provided at one end of the general double-layer page curtain, so as to drive the work of the curtain and the light-blocking curtain respectively through the transmission box.

[0003] The existing transmission box is often integrally formed with the curtain base, and the cover plate of the transmission box is integrally connected to the curtain base by screw connection or bolt connection. When the transmission wheel or transmission structure in the transmission box is worn out after a long time and needs to be replaced, the overall curtain seat needs to be disassembled to disassemble the transmission box, and the transmission box cannot be quickly disassembled, so it is not convenient to maintain and repair the transmission components in the transmission box. Content of the Utility Model

[0004] In order to overcome the defects existing in the prior art, the utility model provides a transmission box for a double-layer page curtain.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a transmission box for a double-layer page curtain, including a housing, a connecting plate and a cover plate. A connecting plate is provided on one side of the housing. A first card interface is provided on the upper surface of the housing. A first cavity is provided between the connecting plate and the housing. A first transmission component is provided in the first cavity. A cover plate is provided on the side of the connecting plate away from the housing. A hook is provided on the upper part of the side of the cover plate close to the connecting plate. The hook passes through the connecting plate and is clamped at the first card interface. A second cavity is provided between the connecting plate and the cover plate. A second transmission component is provided in the second cavity.

[0006] It should be noted that the first transmission component and the second transmission component are not in the same plane.

[0007] In a further description of this solution, a plug-in slot is opened on the lower surface of the housing. A clamping plate is provided on the lower part of the side of the cover plate close to the connecting plate. The clamping plate is clamped in the plug-in slot.

[0008] Specifically, a second card interface is opened at one end of the clamping plate away from the cover plate. A clamping protrusion is provided inside the plug-in slot. The clamping protrusion is clamped in the second card interface.

[0009] Further description of this solution. The first transmission assembly includes a first transmission sprocket, a first transmission shaft, and a first positioning bearing. The first transmission sprocket is arranged in the first cavity. A first transmission shaft is arranged at the center of the first transmission sprocket. One end of the first transmission shaft penetrates through the housing and extends outward. A first positioning bearing is sleeved outside the first transmission shaft, and the first positioning bearing is engaged with the housing.

[0010] Furthermore, a first engaging tooth is arranged at the connection between the housing and the first positioning bearing. A second engaging tooth is arranged on the outer surface of the first positioning bearing. The first engaging tooth and the second engaging tooth are engaged with each other.

[0011] Further description of this solution. The second transmission assembly includes a second transmission sprocket, a second transmission shaft, and a second positioning bearing. The second transmission sprocket is arranged in the second cavity. A second transmission shaft is arranged at the center of the second transmission sprocket. One end of the second transmission shaft penetrates through the connecting plate and the housing and extends outward. A second positioning bearing is sleeved outside the second transmission shaft, and the second positioning bearing is engaged with the housing.

[0012] Furthermore, a third engaging tooth is arranged at the connection between the housing and the second positioning bearing. A fourth engaging tooth is arranged on the outer surface of the second positioning bearing. The third engaging tooth and the fourth engaging tooth are engaged with each other.

[0013] Further description of this solution. A plurality of first limiting protrusions are arranged on one side of the housing close to the connecting plate. A plurality of second limiting protrusions are arranged on one side of the cover plate close to the connecting plate. A first abutting rod and a second abutting rod are arranged on both sides of the connecting plate. First positioning grooves are respectively formed at one ends of the first abutting rod and the second abutting rod close to the housing and the connecting plate. The first limiting protrusions and the second limiting protrusions are both arranged in the first positioning grooves.

[0014] Specifically, a first guiding block is arranged on one side of the first abutting rod. A second positioning groove is formed on the side of the first guiding block close to the housing. The first limiting protrusion is arranged in the second positioning groove. A second guiding block is arranged on one side of the second abutting rod. A third positioning groove is formed on the side of the second guiding block close to the housing. The second limiting protrusion is arranged in the third positioning groove.

[0015] Preferably, the first guiding block is arranged in the first cavity to form a first guiding portion. The second guiding block is arranged in the second cavity to form a second guiding portion.

[0016] The beneficial effects of the present utility model are:

[0017] When disassembling this transmission case, only need to disengage the catch from the first catch interface, then the cover plate can be quickly disassembled. After disassembling the cover plate, the second transmission component in the second cavity can be quickly disassembled. After disassembling the second transmission component, the connecting plate can be quickly disassembled, so that the first transmission component in the first cavity can be disassembled. In this way, the transmission case can be quickly disassembled and installed by using the snap connection method, without the need to disassemble the whole curtain seat to disassemble the transmission case, thus facilitating the maintenance and repair of the transmission components in the transmission case. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic view of the overall structure of the transmission case of the present utility model where the first transmission component and the second transmission component are not in the same plane Figure 1 ;

[0019] Figure 2 is a schematic view of the overall structure of the transmission case of the present utility model where the first transmission component and the second transmission component are not in the same plane Figure 2 ;

[0020] Figure 3 is a schematic view of the overall structure of the transmission case of the present utility model where the first transmission component and the second transmission component are not in the same plane Figure 3 ;

[0021] Figure 4 is an exploded view of the overall structure of the transmission case of the present utility model where the first transmission component and the second transmission component are not in the same plane;

[0022] Figure 5 is a top view of the transmission case of the present utility model where the first transmission component and the second transmission component are not in the same plane;

[0023] Figure 6 is Figure 5 a sectional view taken along line A - A of

[0024] Figure 7 is Figure 5 a sectional view taken along line B - B of

[0025] Figure 8 is a schematic view of the structure of the housing of the present utility model Figure 1 ;

[0026] Figure 9 is a schematic view of the structure of the housing of the present utility model Figure 2 ;

[0027] Figure 10 is a schematic view of the structure of the connecting plate of the present utility model Figure 1 ;

[0028] Figure 11Structural schematic diagram of the connecting plate of the present utility model Figure 1 ;

[0029] Figure 12 Structural schematic diagram of the cover plate of the present utility model;

[0030] Figure 13 Structural schematic diagram of the first transmission component of the present utility model;

[0031] Figure 14 Structural schematic diagram of the second transmission component of the present utility model.

[0032] Figure 15 Overall structural schematic diagram of the transmission box when the first transmission component and the second transmission component of the present utility model are on the same plane Figure 1 。

[0033] Figure 16 Overall structural schematic diagram of the transmission box when the first transmission component and the second transmission component of the present utility model are on the same plane Figure 2 。

[0034] As shown in the figure: housing 1, connecting plate 2, cover plate 3, second limiting convex block 31, first card interface 4, hook 5, first transmission component 6, first transmission sprocket 61, first transmission shaft 62, first positioning bearing 63, second card teeth 631, second transmission component 7, second transmission sprocket 71, second transmission shaft 72, second positioning bearing 73, fourth card teeth 731, insertion slot 8, card convex 81, positioning plate 9, second card interface 91, first card teeth 10, third card teeth 11, first limiting convex block 12, first abutting rod 13, second abutting rod 14, first positioning groove 15, first guiding block 16, second positioning groove 161, second guiding block 17, third positioning groove 171, first guiding portion 18, second guiding portion 19. Specific embodiments

[0035] The following further describes the specific embodiments of the present utility model with reference to the accompanying drawings. It should be noted here that the description of these embodiments is for helping to understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0036] As shown in the attached Figure 1 、 2As shown in Figures 3, 4, 5, 6 and 7, a transmission box of a double-layer page curtain provided by the present utility model includes a housing 1, a connecting plate 2 and a cover plate 3. A connecting plate 2 is provided on one side of the housing 1, a first card interface 4 is provided on the upper surface of the housing 1, a first cavity is provided between the connecting plate 2 and the housing 1, a first transmission component 6 is provided in the first cavity, a cover plate 3 is provided on the side of the connecting plate 2 away from the housing 1, a hook 5 is provided on the upper part of the side of the cover plate 3 close to the connecting plate 2, and the hook 5 passes through the connecting plate 2 and is clamped at the first card interface 4, so that the installation of the cover plate 3 can be realized by the mutual clamping of the hook 5 and the first card interface 4. Subsequently, a second cavity is provided between the connecting plate 2 and the cover plate 3, and a second transmission component 7 is provided in the second cavity.

[0037] It should be noted that, as shown in Figure 1 , 2 , 3, 4 and 5, the first transmission component 6 and the second transmission component 7 are not in the same plane;

[0038] Or, as shown in Figure 15 and 16 , the first transmission component 6 and the second transmission component 7 are arranged in the same plane.

[0039] Preferably, the first transmission component 6 and the second transmission component 7 are respectively installed in the transmission box, and transmission rods can be externally connected to the first transmission component 6 and the second transmission component 7 respectively. Subsequently, when the transmission box is installed in the curtain seat, the double-axis transmission of the double-layer page curtain can be realized. When the cyclic exchange of different page curtains of the double-layer page curtain is required, and only the double-axis pulling method in the transmission box is adopted, the operator can quickly realize the exchange of different page curtains of the double-layer page curtain by the work of different transmission shafts, which can shorten the exchange time of the page curtains of the double-layer page curtain and improve the practicability of the double-layer page curtain.

[0040] Subsequently, a plug-in slot 8 is opened on the lower surface of the housing 1, a positioning plate 9 is provided on the lower part of the side of the cover plate 3 close to the connecting plate 2, and the positioning plate 9 is clamped in the plug-in slot 8. The cover plate 3 can be further limited to one side of the housing 1 by the mutual clamping of the positioning plate 9 and the plug-in slot 8. At the same time, a second card interface 91 is opened at one end of the positioning plate 9 away from the cover plate 3, and a card protrusion 81 is provided inside the plug-in slot 8. The card protrusion 81 is clamped in the second card interface 91. Subsequently, the cover plate 3 is clamped to one side of the housing 1 by the mutual clamping of the card protrusion 81 and the second card interface 91, and the connecting plate 2 between the housing 1 and the cover plate 3 can be fixed.

[0041] When maintenance or repair and replacement of the transmission components inside the transmission case are required: First, manually operate to push the catch 5 out of the first catch interface 4, so that the catch 5 can be disengaged from the first catch interface 4. At the same time, manually operate to push the catch protrusion 81 out of the second catch interface 91, and then the cover plate 3 can be quickly disassembled. After the cover plate 3 is disassembled, the second transmission component 7 inside the second cavity can be quickly disassembled. After the disassembly of the second transmission component 7 is completed, the connecting plate 2 can be quickly disassembled, so that the first transmission component 6 inside the first cavity can be disassembled. In this way, the transmission case can be quickly disassembled and installed by using the snap connection method, without the need to disassemble the entire curtain seat to disassemble the transmission case, thus facilitating the maintenance and repair of the transmission components inside the transmission case.

[0042] As shown in Figure 1 , 2 , 3, 4, 5, 8, 9, 10, 11 and 12, a plurality of first limiting protrusions 12 are provided on one side of the housing 1 close to the connecting plate 2, a plurality of second limiting protrusions 31 are provided on one side of the cover plate 3 close to the connecting plate 2, a first abutting rod 13 and a second abutting rod 14 are provided on both sides of the connecting plate 2, and first positioning grooves 15 are opened at one ends of the first abutting rod 13 and the second abutting rod 14 close to the housing 1 and the connecting plate 2 respectively; the first limiting protrusions 12 and the second limiting protrusions 31 are both arranged in the first positioning grooves 15;

[0043] Through the mutual cooperation of the first limiting protrusion 12 and the first positioning groove 15, it is convenient to accurately install the connecting plate 2 on one side of the housing 1, so as to limit the position of the connecting plate 2 during installation and avoid the situation of the connecting plate 2 shifting during installation. Subsequently, through the mutual cooperation of the second limiting protrusion 31 and the first positioning groove 15, it is convenient to accurately install the cover plate 3 on the side of the connecting plate 2 away from the housing 1, so as to limit the position of the cover plate 3 during installation and avoid the situation of the cover plate 3 shifting during installation.

[0044] A first guiding block 16 is provided on one side of the first abutting rod 13, a second positioning groove 161 is opened on the side of the first guiding block 16 close to the housing 1, and the first limiting protrusion 12 is arranged in the second positioning groove 161. A second guiding block 17 is provided on one side of the second abutting rod 14, a third positioning groove 171 is opened on the side of the second guiding block 17 close to the housing 1, and the second limiting protrusion 31 is arranged in the third positioning groove 171;

[0045] Similarly, through the mutual cooperation of the first limiting protrusion 12 and the second positioning groove 161, the position of the connecting plate 2 during installation can also be limited, further avoiding the situation of the connecting plate 2 shifting during installation. Subsequently, through the mutual cooperation of the second limiting protrusion 31 and the third positioning groove 171, the position of the cover plate 3 during installation can also be limited, further avoiding the situation of the cover plate 3 shifting during installation.

[0046] It should be noted that a first chain inlet is provided on one side of the first cavity close to the first guide block 16, and subsequently a second chain inlet is also provided on one side of the second cavity close to the second guide block 16.

[0047] As shown in Figure 1 , 2 , 3, 4, 5, 6, 7, 8, 9, 13 and 14, the first transmission assembly 6 includes a first transmission sprocket 61, a first transmission shaft 62 and a first positioning bearing 63. The first transmission sprocket 61 is arranged in the first cavity. A first transmission shaft 62 is arranged at the center of the first transmission sprocket 61. One end of the first transmission shaft 62 penetrates through the housing 1 and extends outwards. A first positioning bearing 63 is sleeved outside the first transmission shaft 62, and the first positioning bearing 63 is engaged with the housing 1.

[0048] Subsequently, when it is necessary to control the first transmission assembly 6, an external transmission chain can be inserted into the first cavity through an opening on one side of the first cavity, so that the external transmission chain can be connected to the first transmission sprocket 61, and thus the first transmission sprocket 61 can be used to drive the first transmission shaft 62 to rotate. Subsequently, the first transmission shaft 62 is connected to an external first layer of screen curtain transmission rod, so as to realize the operation of the first layer of screen curtain.

[0049] The second transmission assembly 7 includes a second transmission sprocket 71, a second transmission shaft 72 and a second positioning bearing 73. The second transmission sprocket 71 is arranged in the second cavity. A second transmission shaft 72 is arranged at the center of the second transmission sprocket 71. One end of the second transmission shaft 72 penetrates through the connecting plate 2 and the housing 1 and extends outwards. A second positioning bearing 73 is sleeved outside the second transmission shaft 72, and the second positioning bearing 73 is engaged with the housing 1.

[0050] Subsequently, when it is necessary to control the second transmission assembly 7, an external transmission chain can be inserted into the second cavity through an opening on one side of the second cavity, so that the external transmission chain can be connected to the second transmission sprocket 71, and thus the second transmission sprocket 71 can be used to drive the second transmission shaft 72 to rotate. Subsequently, the second transmission shaft 72 is connected to an external second layer of fabric curtain transmission rod, so as to realize the operation of the first layer of fabric curtain.

[0051] Preferably, a first tooth 10 is provided at the connection between the housing 1 and the first positioning bearing 63, and a second tooth 631 is provided on the outer surface of the first positioning bearing 63. The first tooth 10 and the second tooth 631 are engaged with each other, which can limit the first positioning bearing 63, and further limit the installation position of the first transmission assembly 6, avoiding deviation during the installation of the first transmission assembly 6.

[0052] A third engaging tooth 11 is provided at the connection between the subsequent housing 1 and the second positioning bearing 73, and a fourth engaging tooth 731 is provided on the outer surface of the second positioning bearing 73. The third engaging tooth 11 and the fourth engaging tooth 731 are engaged with each other to limit the second positioning bearing 73, thereby further limiting the installation position of the first and second transmission assemblies 7 and avoiding deviation of the second transmission assembly 7 during installation.

[0053] It should be noted that the first guiding block 16 is arranged in the first cavity to form a first guiding portion 18. Through the first guiding portion 18, it is convenient to guide the external transmission chain connected to the first transmission assembly 6 inside the first cavity, thereby avoiding the external transmission chain from getting stuck.

[0054] Subsequently, the second guiding block 17 is arranged in the second cavity to form a second guiding portion 19. Through the first guiding portion 18, it is convenient to guide the external transmission chain connected to the second transmission assembly 6 inside the second cavity, thereby avoiding the external transmission chain from getting stuck.

[0055] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions, and variations to these embodiments still fall within the protection scope of the present invention.

Claims

1. A transmission box for a double-layer leaf curtain, comprising a housing (1), a connecting plate (2) and a cover plate (3), characterized in that: A connecting plate (2) is provided on one side of the shell (1), a first card interface (4) is provided on the upper surface of the shell (1), a first cavity is provided between the connecting plate (2) and the shell (1), a first transmission assembly (6) is provided in the first cavity, a cover plate (3) is provided on the side of the connecting plate (2) away from the shell (1), a hook (5) is provided on the upper part of the side of the cover plate (3) close to the connecting plate (2), the hook (5) passes through the connecting plate (2) and is engaged at the first card interface (4), a second cavity is provided between the connecting plate (2) and the cover plate (3), a second transmission assembly (7) is provided in the second cavity.

2. The transmission box for a double-layer leaf curtain according to claim 1, characterized in that: The lower surface of the housing (1) is provided with a plug-in slot (8), and the lower part of the cover plate (3) close to the connecting plate (2) is provided with a locking plate (9), and the locking plate (9) is locked in the plug-in slot (8).

3. The transmission box of the double-layer leaf curtain according to claim 2, characterized in that: A second card interface (91) is provided at one end of the locking plate (9) away from the cover plate (3), and a locking protrusion (81) is provided inside the insertion slot (8), and the locking protrusion (81) is locked in the second card interface (91).

4. The transmission box for a double-layer leaf curtain according to claim 1, characterized in that: The first transmission assembly (6) comprises a first transmission sprocket (61), a first transmission shaft (62) and a first locating bearing (63); the first transmission sprocket (61) is arranged in the first cavity; a first transmission shaft (62) is arranged at the center of the first transmission sprocket (61); one end of the first transmission shaft (62) passes through the housing (1) and extends outward; the first locating bearing (63) is sleeved on the outside of the first transmission shaft (62); the first locating bearing (63) and the housing (1) are mutually clamped.

5. The transmission box for a double-layer leaf curtain according to claim 4, characterized in that: A first latching tooth (10) is provided at the connection between the housing (1) and the first locating bearing (63), a second latching tooth (631) is provided on the outer surface of the first locating bearing (63), and the first latching tooth (10) and the second latching tooth (631) are meshed with each other.

6. The transmission box for a double-layer leaf curtain according to claim 1, characterized in that: The second transmission assembly (7) comprises a second transmission sprocket (71), a second transmission shaft (72) and a second locating bearing (73); the second transmission sprocket (71) is arranged in the second cavity; a second transmission shaft (72) is arranged at the center of the second transmission sprocket (71); one end of the second transmission shaft (72) penetrates the connecting plate (2) and the housing (1) and extends outward; a second locating bearing (73) is sleeved on the outside of the second transmission shaft (72); and the second locating bearing (73) and the housing (1) are mutually clamped.

7. The transmission box for a double-layer leaf curtain according to claim 6, characterized in that: A third latching tooth (11) is provided at the connection between the housing (1) and the second locating bearing (73), a fourth latching tooth (731) is provided on the outer surface of the second locating bearing (73), and the third latching tooth (11) and the fourth latching tooth (731) are meshed with each other.

8. The transmission box for a double-layer leaf curtain according to claim 1, characterized in that: A plurality of first limiting protrusions (12) are arranged on a side of the shell (1) close to the connecting plate (2), a plurality of second limiting protrusions (31) are arranged on a side of the cover plate (3) close to the connecting plate (2), a first abutting rod (13) and a second abutting rod (14) are arranged on both sides of the connecting plate (2), a first positioning groove (15) is formed at one end of the first abutting rod (13) and the second abutting rod (14) close to the shell (1) and the connecting plate (2), respectively, and the first limiting protrusion (12) and the second limiting protrusion (31) are arranged in the first positioning groove (15).

9. The transmission box for a double-layer leaf curtain according to claim 8, characterized in that: A first guide block (16) is provided on one side of the first abutting rod (13); a second positioning groove (161) is provided on a side of the first guide block (16) close to the housing (1); the first limiting protrusion (12) is arranged in the second positioning groove (161); a second guide block (17) is provided on one side of the second abutting rod (14); a third positioning groove (171) is provided on a side of the second guide block (17) close to the housing (1); and the second limiting protrusion (31) is arranged in the third positioning groove (171).

10. The transmission box for double-layer leaf curtain according to claim 9, characterized in that: The first guide block (16) is arranged in the first cavity to form a first guide portion (18), and the second guide block (17) is arranged in the second cavity to form a second guide portion (19).

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