Transmission case of electric curtain

Abstract

The utility model relates to the technical field of electric curtains, and discloses a transmission case of an electric curtain, which is characterized by comprising a case body and a transmission cavity formed in the case body, a transmission gear is rotatably connected in the transmission cavity and comprises an input end, the input end is exposed out of the case body, and a magnetic ring is fixedly connected onto the transmission gear. The magnet ring is moved from the motor to the transmission case, the space occupied by the magnet ring for the motor can be reduced, the overall size of the motor can be further reduced, and the magnet ring is arranged on the side, close to the input end, of the transmission cavity, so that after the transmission case and the motor are installed, the magnet ring can be close to the motor; therefore, the magnetic pole on the magnetic ring can be sensed by the Hall sensor in the motor, and the accuracy of the rotation direction and the rotation stroke of the input end detected by the Hall sensor is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric curtain technical field more specifically relates to a transmission case of electric curtain. BACKGROUND

[0002] Electric curtain drives curtain cloth opening and closing through motor, and it includes motor, and the output end of motor is connected with the transmission case in the track end part, thereby driving the belt drive in the track, and the volume requirement of motor is more harsh for the design of different curtain boxes,

[0003] Because the motor needs to detect the opening and closing stroke of curtain cloth, stroke detection is usually realized through the cooperation of hall sensor and magnetic ring, and for the conventional hidden curtain motor, the stroke detection mechanism is arranged in the motor, which occupies a certain volume space, resulting in that the volume of the motor is large. UTILITARY MODEL CONTENT

[0004] In view of the deficiency of prior art, the utility model aims at providing a transmission case of electric curtain for reducing the space of motor part occupied by stroke detection mechanism.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a transmission case of electric curtain, including box body and transmission cavity formed in the box body, transmission gear is rotatably connected in the transmission cavity, input end is arranged on the transmission gear, the input end exposes the box body, and the magnetic ring is fixedly connected on the transmission gear.

[0006] As a further improvement of the utility model, the magnetic ring is located on the side of the transmission cavity close to the input end.

[0007] As a further improvement of the utility model, the transmission gear is formed with a convex ring to separate the magnetic ring and the tooth surface on the transmission gear.

[0008] As a further improvement of the utility model, the input end includes an input piece, the input piece is rotatably connected with the transmission gear, and a clutch part is arranged between the input piece and the transmission gear to make the input piece and the transmission gear disengage or engage.

[0009] As a further improvement of the utility model, the clutch part includes a clutch piece, an iron piece and two magnetic beads, the clutch piece is integrally formed with the input piece, the iron piece is connected with the box body, the two magnetic beads are respectively located on the two sides of the clutch piece and are adsorbed on the iron piece, a clutch cavity is formed on the side of the transmission gear facing the iron piece, the clutch piece is located in the clutch cavity, and two recesses matched with the magnetic beads are formed in the clutch cavity.

[0010] As a further improvement of the utility model, the box body comprises a cover body and a shell, and the shell and the cover body are detachably connected.

[0011] As a further improvement of the utility model, the shell is integrally formed with a protruding strip, and the protruding strip is arranged in parallel with the central axis of the input end.

[0012] As a further improvement of the utility model, the cover body is provided with a slot on the side facing the input end, and at least part of the iron piece extends into the slot.

[0013] As a further improvement of the utility model, one end of the box body is provided with a connecting groove.

[0014] As a further improvement of the utility model, the input end is provided with a spline groove.

[0015] The utility model discloses a transmission box for motor, which comprises a box body, a transmission cavity, a cover body, a shell, a transmission gear, an input end and a magnetic ring. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0017] Figure 2 It is the sectional view of the utility model;

[0018] Figure 3 It is the internal structure schematic diagram of the utility model;

[0019] Figure 4 It is the structure schematic diagram of spline groove in the utility model;

[0020] Figure 5 It is the structure schematic diagram of transmission gear in the utility model;

[0021] Figure 6 It is the structure schematic diagram of input end in the utility model.

[0022] Reference signs: 1, box body;11, transmission cavity;12, cover body;121, slot;13, shell;131, protruding strip;14, connecting groove;2, transmission gear;21, protruding ring;22, clutch cavity;3, input end;31, spline groove;4, magnetic ring;51, clutch piece;52, iron piece;53, recess. DETAILED DESCRIPTION

[0023] The utility model is further explained in detail below in combination with the drawings and examples. Same parts are indicated by same reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" in the following description refer to the directions in the drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific part.

[0024] Referring to Figures 1 to 6 The transmission box of the electric curtain of the embodiment includes a box body 1 and a transmission cavity 11 formed in the box body 1. A transmission gear 2 is rotatably connected in the transmission cavity 11. The transmission gear 2 is used to connect a transmission belt, so as to drive the opening and closing of the curtain cloth. An input end is provided on the transmission gear 2. The input end can be a spline head, can be provided with a spline groove 31, or can be other shape structure capable of transmission docking with the output end of the motor. Preferably, the input end is provided with the spline groove 31.

[0025] The input end is exposed outside the box body 1. A magnetic ring 4 is fixedly connected on the transmission gear 2. Moving the magnetic ring 4 from the motor to the transmission box can reduce the occupied space of the magnetic ring 4 on the motor, so as to further compress the overall size of the motor.

[0026] Referring to Figure 2 The magnetic ring 4 is located on the side of the transmission cavity 11 close to the input end. After the installation between the transmission box and the motor is completed, the magnetic ring 4 can be close to the motor, so that the magnetic poles on the magnetic ring 4 can be sensed by the Hall sensor in the motor, ensuring the accuracy of the rotation direction and rotation stroke of the input end detected by the Hall sensor.

[0027] Referring to Figure 2 and Figure 5 A convex ring 21 is formed on the transmission gear 2 to separate the magnetic ring 4 and the tooth surface on the transmission gear 2. The setting of the convex ring 21 defines the installation position of the magnetic ring 4, facilitating the installation of the magnetic ring 4 by workers and preventing misalignment during installation. The transmission belt is also prevented from contacting the magnetic ring 4.

[0028] Referring to Figure 2 and Figure 6 The input end includes an input piece 3. The input piece 3 is rotatably connected with the transmission gear 2. A clutch part is provided between the input piece 3 and the transmission gear 2 to make the input piece 3 and the transmission gear 2 disengage or engage. Through the setting of the clutch part, the curtain can have the function of driving the curtain cloth to open and close by electricity and the function of manually pulling the curtain cloth to realize the opening and closing of the curtain cloth, which is more convenient to use.

[0029] Referring to Figure 2 , Figure 3 and Figure 6As shown, the clutch part includes a clutch piece 51, an iron piece 52, and two magnetic beads. The clutch piece 51 is integrally formed with the input piece 3, the iron piece 52 is connected with the box body 1, and the two magnetic beads are respectively located on both sides of the clutch piece 51 and are adsorbed on the iron piece 52. The transmission gear 2 is provided with a clutch cavity 22 on the side facing the iron piece 52, the clutch piece 51 is located in the clutch cavity 22, and two grooves 53 matched with the magnetic beads are arranged in the clutch cavity 22. When the input end rotates, the input end will drive the clutch piece 51 to rotate at the same time. The clutch piece 51 pushes the magnetic beads to be clamped into the corresponding grooves 53, so that the clutch piece 51 and the transmission gear 2 are clamped, thereby driving the transmission gear 2 to rotate, realizing the function of motor control of the fabric opening and closing.

[0030] When the fabric is manually pulled, the transmission gear 2 will rotate at the same time. At this time, the magnetic beads are adsorbed on the iron piece 52 and are not clamped in the grooves 53. The transmission gear 2 is separated from the clutch piece 51, and the input end will not rotate, which does not affect the motor.

[0031] The two control functions of electric and manual can be realized.

[0032] Referring to Figure 1 and Figure 3 As shown, the box body 1 includes a cover body 12 and an outer shell 13, and the outer shell 13 and the cover body 12 are detachably connected. A through hole is formed in the cover body 12, and preferably, the through hole is a countersunk hole, which can better hide the end part of the screw.

[0033] A threaded hole is formed in the outer shell 13, and the threaded hole corresponds to the through hole. The threaded hole is connected by a screw to achieve detachable connection.

[0034] In addition, a buckle part is arranged between the cover body 12 and the outer shell 13. The buckle part includes a buckle and a clamping groove. The buckle is integrally formed on the inner wall of the outer shell 13, and two buckles are arranged opposite to each other. The clamping groove is formed in the cover body 12, and the number of the clamping groove corresponds to the number of the buckle, which is used to increase the connection strength between the cover body 12 and the outer shell 13.

[0035] The buckle is located on the side of the outer shell 13 away from the threaded hole, which prevents the cover plate on this side from being buckled.

[0036] Referring to Figure 1 As shown, the outer shell 13 is integrally formed with a protrusion 131, and the protrusion 131 is arranged in parallel with the central axis of the input end. Correspondingly, a cavity is formed in the motor, which is used to accommodate part of the box body 1, so that the transmission box and the motor can be better integrated. A limiting groove matched with the protrusion 131 is formed in the inner wall of the cavity. The transmission box and the motor are positioned by inserting the protrusion 131 into the limiting groove. Of course, a lock catch is arranged between the transmission box and the motor to increase the connection stability of the two.

[0037] The convex strip 131 and the limiting groove are both provided with two, the two convex strips 131 are oppositely arranged, and a positioning effect can be better achieved.

[0038] The cover body 12 is provided with a slot 121 on the side facing the input end, and the at least partial iron piece 52 extends into the slot 121, the iron piece 52 comprises an extension section, the extension section extends into the slot 121, wherein at least one first vertical surface is formed on the outer side of the extension section, a second vertical surface corresponding to the first vertical surface is formed in the slot 121, the first vertical surface is attached to the second vertical surface, so that the rotation of the iron piece 52 can be prevented.

[0039] In addition, the extension section and the slot 121 can be in interference fit, and the loosening of the iron piece 52 can be prevented.

[0040] One end of the box body 1 is provided with a connecting groove 14, the connecting groove 14 is provided on the end of the box body 1 facing the track, and the box body 1 is connected with the track through the connecting groove 14.

[0041] The transmission cavity 11 is communicated with the connecting groove 14, and the transmission of the transmission belt is facilitated.

[0042] The above is only the preferred embodiment of the present application, the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical scheme belonging to the idea of the present application belongs to the protection scope of the present application. It should be pointed out that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application can also be considered as the protection scope of the present application.

Claims

1. A transmission box for an electric window shade, characterized by: The utility model provides a transmission device, including box (1) and transmission cavity (11) formed in the box (1), rotationally connected with transmission gear (2) in transmission cavity (11), input end is arranged on transmission gear (2), the input end exposes the box (1), fixedly connected with magnetic ring (4) on transmission gear (2).

2. A transmission housing for an electrically operated window blind according to claim 1, wherein: The magnetic ring (4) is located on the side of the transmission cavity (11) close to the input end.

3. A transmission housing for an electrically operated window blind according to claim 1, wherein: The transmission gear (2) is formed with a convex ring (21) to separate the magnetic ring (4) and the tooth surface on the transmission gear (2).

4. A transmission housing for an electrically operated window blind according to claim 1, wherein: The input end includes an input member (3) rotationally connected with the transmission gear (2), and a clutch portion is arranged between the input member (3) and the transmission gear (2) to disengage or engage the input member (3) with the transmission gear (2).

5. A transmission housing for an electrically operated window blind according to claim 4, wherein: The clutch portion includes a clutch member (51), an iron member (52), and two magnetic beads, the clutch member (51) is integrally formed with the input member (3), the iron member (52) is connected with the box (1), the two magnetic beads are respectively located on both sides of the clutch member (51) and are adsorbed on the iron member (52), a clutch cavity (22) is formed on the side of the transmission gear (2) facing the iron member (52), the clutch member (51) is located in the clutch cavity (22), and two grooves (53) matched with the magnetic beads are formed in the clutch cavity (22).

6. A transmission housing for an electrically operated window blind according to claim 5, wherein: The box (1) includes a cover (12) and a shell (13), and the shell (13) and the cover (12) are detachably connected.

7. A transmission housing for an electrically operated window blind according to claim 6, wherein: The shell (13) is integrally formed with a protrusion (131) parallel to the central axis of the input end.

8. A transmission housing for an electrically operated window blind according to claim 6, wherein: The cover (12) is formed with a slot (121) on the side facing the input end, and at least part of the iron member (52) extends into the slot (121).

9. A transmission housing for an electrically operated window blind according to claim 1, wherein: One end of the box (1) is formed with a connecting groove (14).

10. A transmission housing for an electrically operated window blind according to claim 1, characterised in that: The input end is formed with a spline groove (31).

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