Rail end assembly

Abstract

The utility model relates to electric curtain technical field discloses a kind of track end assembly, its technical scheme main point is including detachable connection's shell and cover, cavity is formed between shell and cover, the opening is formed in one side of cavity, integrally formed with first limit piece, second limit piece and third limit piece in cavity, the setting of third limit piece, cooperate with second limit piece, increase the extension section, change the depth of second guide channel into cavity, and can prevent the transmission belt located in second guide channel and the transmission belt contact located in second track, in addition, guide wheel can be moved to the middle part of cavity, the cavity space available is larger, so that the deflection radius of transmission belt is larger, the bending stress of transmission belt is smaller, transmission belt is not easy to damage.

Description

Technical Field

[0001] This utility model relates to the field of electric curtain technology, and more specifically to a track end assembly. Background Technology

[0002] Electric curtains include tracks, which are usually installed inside curtain boxes. Since the actual length that can be installed in the curtain box varies from household to household, users need to measure the length that can be installed in the curtain box first, and then choose the appropriate length of track to purchase. The use of telescopic tracks can solve the above problems. Users can adjust the overall length of the telescopic track at any time before installation to match the length that can be installed in the curtain box, so as to facilitate installation. Conventional telescopic tracks include parallel telescopic tracks, which consist of two parallel tracks so that the drive belt can be connected between the two tracks. Referring to CN202121647562.7, a utility model patent for a curtain track, the guide wheel is positioned off-center near the end of the secondary track, occupying less space. This results in a smaller reversal radius of the transmission belt at the guide wheel and a larger bending stress on the transmission belt. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a track end component for reducing the bending stress on the transmission belt.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a track end assembly, comprising a detachably connected housing and a cover plate, a cavity formed between the housing and the cover plate, an opening formed on one side of the cavity, a first limiting member, a second limiting member, and a third limiting member integrally formed within the cavity, a first guide channel formed between the first limiting member and the second limiting member, and a second guide channel formed between the second limiting member and the third limiting member, one end of the first guide channel and one end of the second guide channel being located at one end of the housing, the other end of the first guide channel and the other end of the second guide channel being connected to the opening, and a guide wheel connected within the second guide channel.

[0005] As a further improvement of this utility model, a support column is formed on the housing, and the guide wheel is movably connected to the support column.

[0006] As a further improvement of this utility model, a boss is formed on the housing, and the support is formed on the boss.

[0007] As a further improvement of this utility model, a reinforcing rib group is formed between the boss and the second limiting member.

[0008] As a further improvement of this utility model, the reinforcing ribs are in the form of a mesh.

[0009] As a further improvement of this utility model, one end of the reinforcing rib group is formed with a slope, and the slope smoothly transitions to the bottom wall of the cavity.

[0010] As a further improvement of this utility model, a spatial enclosure is formed at the second limiting member and / or the third limiting member.

[0011] As a further improvement of this utility model, at least one of the enclosures is provided with a locking position, and an insert adapted to the locking position is provided on the cover plate.

[0012] As a further improvement of this utility model, a connecting section is integrally formed on the shell, and two mutually opposing connecting parts are formed on the connecting section.

[0013] As a further improvement of this utility model, a hook is formed at the opening to connect with the track.

[0014] The beneficial effects of this utility model are as follows: The third limiting member in this utility model, in conjunction with the second limiting member, increases the extension section, changes the depth of the second guide channel entering the cavity, and can prevent the transmission belt located in the second guide channel from contacting the transmission belt located in the second track. In addition, the guide wheel can move towards the center of the cavity, making the available cavity space larger, resulting in a larger reversing radius of the transmission belt, less bending stress on the transmission belt, and less damage to the transmission belt. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the shell structure in this utility model; Figure 3 This is a schematic diagram of the cover plate in this utility model.

[0016] Reference numerals: 1. Shell; 11. Support column; 12. Boss; 13. Reinforcing rib group; 131. Slope; 14. Connecting section; 141. Connector; 15. Hook; 2. Cover plate; 21. Insert; 3. Cavity; 31. Opening; 4. First limiting member; 5. Second limiting member; 51. Enclosure; 511. Locking position; 6. Third limiting member; 7. First guide channel; 8. Second guide channel; 9. Guide wheel. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0018] Reference Figures 1 to 3 As shown, a track end assembly of this embodiment includes a detachably connected housing 1 and a cover plate 2. The housing 1 and the cover plate 2 can be connected by a snap fastener, by bolts, or by a combination of both. A cavity 3 is formed between the housing 1 and the cover plate 2. An opening 31 is formed on one side of the cavity 3. In this embodiment, the housing 1 is connected to a first track, and a second track is parallel to the first track. The opening 31 faces the second track. A first limiting member 4, a second limiting member 5, and a third limiting member 6 are integrally formed inside the cavity 3. A first guide channel 7 is formed between the first limiting member 4 and the second limiting member 5. A second guide channel 8 is formed between the second limiting member 5 and the third limiting member 6. One end of the first guide channel 7 and one end of the second guide channel 8 are both located at one end of the housing 1. This end of the housing 1 is connected to the first track. A transmission belt passes through this end of the housing 1. One end of the third limiting member 6 is connected to this end of the housing 1 and extends into the cavity 3. The extended end faces the guide wheel 9. The other end of the first guide channel 7 and the other end of the second guide channel 8 are both connected to the opening 31. A guide wheel 9 is connected inside the second guide channel 8. The guide wheel 9 is located at one end of the second guide channel 8 near the opening 31, which facilitates the transmission belt to enter the second guide channel 8 from the second track and to be wound around the guide wheel 9. The guide wheel 9 changes the direction of movement of the transmission belt. Preferably, the width of the third limiting member 6 extending toward the guide wheel 9 is increased to cooperate with the second limiting member 5, forming an extension section in the second guide channel 8 that facilitates the passage of the transmission belt; wherein, the position of the guide wheel 9 in the second guide channel 8 is the guide section, and the guide section is connected to the extension section; One end of the second limiting member 5 is connected to the end of the housing 1 near the first track, and the other end of the second limiting member 5 extends to the opening 31. One end of the first limiting member 4 is connected to the middle of the inner wall of the cavity 3 on the side away from the opening 31, and the other end of the first limiting member 4 extends to the opening 31. Preferably, the other end of the first limiting member 4 is connected to the end of the housing 1 away from the first track. The third limiting member 6, in conjunction with the second limiting member 5, adds an extension section, changes the depth of the second guide channel 8 entering the cavity 3, and prevents the transmission belt located in the second guide channel 8 from contacting the transmission belt located in the second track. In addition, the guide wheel 9 can move towards the center of the cavity 3, making the available space in the cavity 3 larger, resulting in a larger reversing radius of the transmission belt, less bending stress on the transmission belt, and less risk of damage to the transmission belt.

[0019] Reference Figure 2 As shown, a support column 11 is formed on the housing 1, and a guide wheel 9 is movably connected to the support column 11. The support column 11 limits the guide wheel 9, which facilitates the installation of the guide wheel 9. Preferably, the support column 11 has a threaded hole or a through hole, and the cover plate 2 has a corresponding mounting hole. The cover plate 2 and the housing 1 are fixed together by bolts or self-tapping screws.

[0020] Reference Figure 2 As shown, a boss 12 is formed on the shell 1, and a support column 11 is formed on the boss 12. On the one hand, the boss 12 increases the height of the support column 11. On the other hand, a connecting rib can be provided between the boss 12 and the support column 11 to increase the strength of the support column 11.

[0021] Reference Figure 2 As shown, a reinforcing rib group 13 is formed between the boss 12 and the second limiting member 5. Because the second limiting member 5 has height, the setting of the reinforcing rib group 13 can increase the strength of the second limiting member 5 and prevent it from breaking. In addition, the reinforcing rib group 13 also raises the position of the transmission belt, reducing the friction range between the transmission belt and the bottom wall of the cavity 3.

[0022] The reinforcing rib group 13 is in the form of a mesh, preferably with the mesh area being greater than 90 degrees.

[0023] One end of the reinforcing rib assembly 13 has a ramp 131, which smoothly transitions to the bottom wall of the cavity 3, making it easy for the end of the transmission belt to move from the ramp 131 to the reinforcing rib assembly 13 when the transmission belt is installed.

[0024] A spatial enclosure 51 is formed at the second limiting member 5 and / or the third limiting member 6. The enclosure 51 can utilize the space of the cavity 3 to reduce the width of the second guide channel 8; it also increases the strength of the corresponding second limiting member 5 and third limiting member 6.

[0025] Preferably, both the second limiting member 5 and the third limiting member 6 have a spatial enclosure 51.

[0026] Reference Figure 2 and Figure 3As shown, at least one enclosure 51 has a locking position 511 formed therein, wherein locking positions 511 are formed at the enclosure 51 of the second limiting member 5 and the third limiting member 6. Two vertical plates are formed on the inner wall of the enclosure 51, and the locking position 511 is formed between the two vertical plates. An insert 21 adapted to the locking position 511 is formed on the cover plate 2, which limits the connection between the cover plate 2 and the housing 1. The insert 21 is installed between the corresponding two vertical plates, that is, between the corresponding locking positions 511.

[0027] Reference Figure 1 and Figure 2 As shown, a connecting section 14 is integrally formed on the housing 1. Two mutually opposing connectors 141 are formed on the connecting section 14. The connectors 141 can be inserted into the slots at the top of the second track, thereby realizing the connection between the connecting section 14 and the second track.

[0028] A hook 15 is formed at the opening 31 to connect with the track. The hook 15 is inserted into the slot at the bottom of the second track, and the hook 15 connects the housing 1 with the second track.

[0029] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A track end assembly, characterized in that: The device includes a detachably connected housing (1) and a cover plate (2), with a cavity (3) formed between the housing (1) and the cover plate (2). An opening (31) is formed on one side of the cavity (3). A first limiting member (4), a second limiting member (5), and a third limiting member (6) are integrally formed inside the cavity (3). A first guide channel (7) is formed between the first limiting member (4) and the second limiting member (5), and a second guide channel (8) is formed between the second limiting member (5) and the third limiting member (6). One end of the first guide channel (7) and one end of the second guide channel (8) are both located at one end of the housing (1). The other end of the first guide channel (7) and the other end of the second guide channel (8) are both connected to the opening (31). A guide wheel (9) is connected inside the second guide channel (8).

2. A track end assembly according to claim 1, characterized in that: A support column (11) is formed on the housing (1), and the guide wheel (9) is movably connected to the support column (11).

3. A track end assembly according to claim 2, characterized in that: A boss (12) is formed on the housing (1), and the support (11) is formed on the boss (12).

4. A track end assembly according to claim 3, characterized in that: A reinforcing rib group (13) is formed between the boss (12) and the second limiting member (5).

5. A track end assembly according to claim 4, characterized in that: The reinforcing rib group (13) is mesh-like.

6. A track end assembly according to claim 4, characterized in that: One end of the reinforcing rib group (13) has a ramp (131) that smoothly transitions to the bottom wall of the cavity (3).

7. A track end assembly according to claim 1, characterized in that: A spatial enclosure (51) is formed at the second limiting member (5) and / or the third limiting member (6).

8. A track end assembly according to claim 7, characterized in that: At least one of the enclosures (51) has a locking position (511) formed therein, and an insert (21) adapted to the locking position (511) is formed on the cover plate (2).

9. A track end assembly according to claim 1, characterized in that: The housing (1) has an integrally formed connecting section (14), on which two mutually opposing connectors (141) are formed.

10. A track end assembly according to claim 1, characterized in that: A hook (15) for connecting to the track is formed at the opening (31).

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