One-way non-return motor for electric curtain

Abstract

The utility model relates to a one-way non-return motor for an electric curtain, which comprises a motor core, a speed reducer, an output shaft and a non-return assembly, the motor core, the speed reducer and the output shaft are sequentially in transmission connection, the non-return assembly is connected with the output shaft, and the non-return assembly comprises a shell, a friction sleeve and a one-way non-return bearing. The one-way non-return bearing, the friction sleeve and the outer shell are sequentially arranged on the output shaft in a sleeved mode from inside to outside, the outer shell is fixedly connected with the speed reducer, the friction sleeve is fixedly connected with the outer shell, and the one-way non-return bearing is in interference fit with the friction sleeve. When the motor rotates forwards, the output shaft drives the one-way non-return bearing to overcome the friction force between the one-way non-return bearing and the friction sleeve to rotate together, the curtain is wound and unwound, when the motor stops working, the gravity of the curtain is smaller than the friction force between the one-way non-return bearing and the friction sleeve, and the curtain can be rapidly and stably opened and closed at the instantaneous position and can be stopped immediately.

Description

Technical Field

[0001] The utility model relates to the technical field of curtain control, in particular to a one-way non-return motor for electric curtains. Background Art

[0002] Electric curtains are driven by motors and control the opening and closing of curtains. Generally, electric curtains include opening and closing curtains and rolling curtains. The gravity of rolling curtains will affect the stable operation of the curtains. For example, when the motor stops working, the rolling curtain will automatically slide down a certain distance due to its own gravity and cannot stop immediately, and it will also cause certain damage to the motor. Therefore, how to improve the curtain motor so that the curtain can stop quickly and smoothly is a problem that needs to be solved urgently. Utility Model Content

[0003] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a one-way check motor for electric curtains, so that the electric curtains can be opened and closed quickly and smoothly at an instantaneous position and stop immediately.

[0004] The technical solution adopted by the utility model to solve the above technical problems is: a one-way check motor for electric curtains, comprising a motor movement, a reducer, an output shaft and a check assembly, wherein the motor movement, the reducer and the output shaft are sequentially connected in transmission, the check assembly is connected to the output shaft, the check assembly comprises a housing, a friction sleeve and a one-way check bearing, the one-way check bearing, the friction sleeve and the housing are sequentially sleeved on the output shaft from the inside to the outside, the housing is fixedly connected to the reducer, the friction sleeve is fixedly connected to the housing, and the one-way check bearing and the friction sleeve are interference fit.

[0005] Furthermore, the friction sleeve is a PEEK friction sleeve.

[0006] Furthermore, a plurality of convex ridges arranged at equal intervals are provided on the outer peripheral wall of the friction sleeve, and a groove cooperating with the convex ridges is provided on the inner peripheral wall of the shell.

[0007] Furthermore, the reducer includes a base, an inner ring gear, an input gear, a first-stage planetary gear, a first-stage planetary carrier, a second-stage planetary gear, a second-stage planetary carrier, a third-stage planetary gear and an output planetary carrier, the base is fixedly connected to the motor movement, the inner ring gear is fixedly connected to the base, the outer shell is fixedly connected to the inner ring gear, the input gear is transmission-connected to the output end of the motor movement, the input gear, the first-stage planetary gear, the first-stage planetary carrier, the second-stage planetary gear, the second-stage planetary carrier, the third-stage planetary gear and the output planetary carrier are installed in the inner ring gear and transmission-connected in sequence, the first-stage planetary gear, the second-stage planetary gear and the third-stage planetary gear are all meshed with the inner ring gear, and the output planetary carrier is transmission-connected to the output shaft.

[0008] Furthermore, a shaft sleeve is sleeved on the output shaft at the transition between the outer shell and the inner gear ring.

[0009] Furthermore, a gasket is provided between the shaft sleeve and the output planetary carrier.

[0010] Furthermore, the output shaft is provided with a retaining spring, the retaining spring is located between the shaft sleeve and the friction sleeve, and the output shaft is provided with a retaining groove that cooperates with the retaining spring.

[0011] Furthermore, a ring convexity is convexly provided on the inner wall of the shell, and a convex edge convexly protruding outwardly is provided on the shaft sleeve, and the convex edge is blocked and connected with the ring convexity.

[0012] Furthermore, the output planet carrier and the output shaft are in flat-position fit.

[0013] Compared with the prior art, the utility model has the following advantages: the utility model cooperates with the one-way check bearing and the friction sleeve so that when the motor rotates in reverse, the output shaft can rotate normally to realize the retraction of the curtain. When the motor rotates forward, the output shaft is subjected to the stopping force of the one-way check bearing, thereby driving the one-way check bearing to overcome the friction between the one-way check bearing and the friction sleeve and rotate together, thereby realizing the retraction of the curtain. When the motor stops working, the gravity of the curtain is less than the friction between the one-way check bearing and the friction sleeve, and the curtain can be opened and closed quickly and smoothly at the instantaneous position, that is, stop and go. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0015] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the partial split structure of the utility model;

[0018] Figure 3This is a schematic diagram of the utility model;

[0019] Figure 4 This is a cross-sectional view of the utility model without the inner gear ring;

[0020] Figure 5 It is a structural schematic diagram of the housing of the utility model;

[0021] As shown in the figure, 1 motor movement, 2 reducer, 2.1 base, 2.2 inner ring gear, 2.3 input gear, 2.4 first-stage planetary gear, 2.5 first-stage planetary carrier, 2.6 second-stage planetary gear, 2.7 second-stage planetary carrier, 2.8 third-stage planetary gear, 2.9 output planetary carrier, 3 check assembly, 3.1 housing, 3.1.1 groove, 3.1.2 annular convex, 3.2 friction sleeve, 3.2.1 convex ridge, 3.3 one-way check bearing, 4 output shaft, 4.1 slot, 5 sleeve, 5.1 convex edge, 6 gasket, 7 retaining spring. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with specific implementation methods.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, which indicate orientations or positional relationships, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] like Figure 1-5 As shown, the utility model provides a one-way check motor for electric curtains, comprising a motor movement 1, a reducer 2, an output shaft 4 and a check assembly 3, wherein the motor movement 1, the reducer 2 and the output shaft 4 are sequentially connected in transmission, the check assembly 3 is connected to the output shaft 4, the check assembly 3 comprises a housing 3.1, a friction sleeve 3.2 and a one-way check bearing 3.3, the one-way check bearing 3.3, the friction sleeve 3.2 and the housing 3.1 are sequentially sleeved on the output shaft 4 from the inside to the outside, the housing 3.1 is fixedly connected to the reducer 2, the friction sleeve 3.2 is fixedly connected to the housing 3.1, and the one-way check bearing 3.3 is interference fit with the friction sleeve 3.2.

[0028] The utility model cooperates with the one-way check bearing 3.3 and the friction sleeve 3.2, so that when the motor is reversed, the output shaft 4 can rotate normally to realize the curtain retraction. When the motor is forward, the output shaft 4 is subjected to the reverse force of the one-way check bearing 3.3, thereby driving the one-way check bearing 3.3 to overcome the friction between the one-way check bearing 3.3 and the friction sleeve 3.2 to rotate together, thereby realizing the curtain retraction. When the motor stops working, the gravity of the curtain is less than the friction between the one-way check bearing 3.3 and the friction sleeve 3.2, and the curtain can be opened and closed quickly and smoothly at the instantaneous position, that is, stop and stop.

[0029] Wherein, the friction sleeve 3.2 is a PEEK friction sleeve, which has good wear resistance, long service life and good backstop effect.

[0030] Among them, see Figure 2 , 3 5. The outer peripheral wall of the friction sleeve 3.2 is provided with a plurality of convex ridges 3.2.1 arranged at equal intervals. The convex ridges 3.2.1 are arranged along the length direction of the friction sleeve 3.2. The inner peripheral wall of the shell 3.1 is provided with grooves 3.1.1 matched with the convex ridges 3.2.1. Through the snap fit between the convex ridges 3.2.1 and the grooves 3.1.1, the friction sleeve 3.2 can be fixed in the shell 3.1, is not easy to slip, and is easy to disassemble and assemble.

[0031] Among them, see Figure 2 , 3 4. The reducer 2 includes a base 2.1, an inner gear ring 2.2, an input gear 2.3, a primary planetary gear 2.4, a primary planetary carrier 2.5, a secondary planetary gear 2.6, a secondary planetary carrier 2.7, a tertiary planetary gear 2.8 and an output planetary carrier 2.9. The base 2.1 is fixedly connected to the motor movement 1, the inner gear ring 2.2 is fixedly connected to the base 2.1, the housing 3.1 is fixedly connected to the inner gear ring 2.2, the input gear 2.3 is transmission-connected to the output end of the motor movement 1, the input gear 2.3, the primary planetary gear 2.4, the primary planetary carrier 2.5, the secondary planetary gear 2.6, the secondary planetary carrier 2.7, the tertiary planetary gear 2.8 and the output planetary carrier 2.9 are installed in the inner gear ring 2.2 and are transmission-connected in sequence, the primary planetary gear 2.4, the secondary planetary gear 2.6, the tertiary planetary gear 2.8 are all meshed with the inner gear ring 2.2, and the output planetary carrier 2.9 is transmission-connected to the output shaft 4 Connection, wherein the fixed connection involved is preferably a detachable fixed connection, such as a snap-on fixed connection, a screw fixed connection, etc. When working, the output end of the motor movement 1 drives the input gear 2.3 to rotate, and the input gear 2.3 sequentially links the first-stage planetary gear 2.4, the first-stage planetary carrier 2.5, the second-stage planetary gear 2.6, the second-stage planetary carrier 2.7, the third-stage planetary gear 2.8 and the output planetary carrier 2.9, and the output planetary carrier 2.9 drives the output shaft 4 to rotate. When the output shaft 4 is reversed, it can rotate normally to realize the curtain retraction. When the output shaft 4 rotates forward, it is subject to the reverse force of the one-way check bearing 3.3, thereby driving the one-way check bearing 3.3 to overcome the friction between the one-way check bearing 3.3 and the friction sleeve 3.2 to rotate together, thereby realizing the curtain retraction. When the motor movement 1 stops working, the gravity of the curtain is less than the friction between the one-way check bearing 3.3 and the friction sleeve 3.2, and the curtain can be opened and closed quickly and smoothly at the instantaneous position, that is, stop and stop.

[0032] Among them, see Figure 2 , 3 4. A shaft sleeve 5 is sleeved on the output shaft 4 at the transition between the outer shell 3.1 and the inner gear ring 2.2, which can assist the output shaft 4 to rotate smoothly and avoid eccentric wear, thereby extending the service life.

[0033] Among them, see Figure 2 , 4 A gasket 6 is provided between the shaft sleeve 5 and the output planet carrier 2.9 to prevent wear and tear, thereby extending the service life.

[0034] Among them, see Figure 3 , 4 The output shaft 4 is provided with a retaining spring 7, which is located between the shaft sleeve 5 and the friction sleeve 3.2. The output shaft 4 is provided with a retaining groove 4.1 that cooperates with the retaining spring 7. The setting of the retaining spring 7 can play an axial limiting role on the shaft sleeve 5 and the output shaft 4 to avoid axial movement.

[0035] Among them, see Figure 3 , 4 , 5, a circle of annular protrusions 3.1.2 is convexly provided on the inner wall of the shell 3.1, and a circle of outwardly protruding convex edges 5.1 is provided on the sleeve 5. The convex edges 5.1 are blocked with the annular protrusions 3.1.2, which can play the role of axial limit blocking for the sleeve 5.

[0036] The output planet carrier 2.9 and the output shaft 4 are flatly matched to ensure that the output planet carrier 2.9 and the output shaft 4 can be smoothly driven to prevent slipping.

[0037] Since the motor can be installed at the left or right end of the curtain roller tube, the installation direction is different and the check direction is opposite. Therefore, the following uses the example of the motor being installed at the right end of the curtain roller tube for usage, and the direction of the motor is viewed from the left side of the roller tube to the right. When the motor rotates counterclockwise, the motor drives the roller tube to rotate counterclockwise to retract the curtain. At this time, the output shaft 4 is not subject to the check force of the one-way check bearing 3.3, and the output shaft 4 can rotate normally to drive the roller tube to retract the curtain. When the motor stops working, the output shaft 4 will be pulled in the reverse direction by the gravity of the curtain. At this time, the one-way check bearing 3.3 will prevent the output shaft 4 from rotating in the reverse direction, and the gravity of the curtain is less than the friction between the one-way check bearing 3.3 and the friction sleeve 3.2, and the one-way check bearing 3.3 cannot be linked to overcome The friction force rotates, so that the curtain can be smoothly stopped at the instantaneous position where the motor stops working, that is, it stops immediately. Conversely, when the motor rotates clockwise, the motor drives the winding tube to rotate clockwise to roll up the curtain. At this time, the output shaft 4 is subjected to the stopping force of the one-way check bearing 3.3, but the driving force of the motor can overcome the friction between the one-way check bearing 3.3 and the friction sleeve 3.2, thereby driving the one-way check bearing 3.3 to rotate together, and realizing the winding tube to roll up the curtain. When the motor stops working, the gravity of the curtain is less than the friction between the one-way check bearing 3.3 and the friction sleeve 3.2, and cannot drive the one-way check bearing 3.3 to overcome the friction force and rotate, so that the curtain can be smoothly stopped at the instantaneous position where the motor stops working, that is, it stops immediately.

[0038] Unless otherwise specified, the materials, reagents and experimental equipment involved in the embodiments of the present invention are all commercially available products in the field of curtain control technology.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A one-way non-return motor for electric curtains, characterized in that: It includes a motor movement, a reducer, an output shaft and a check assembly. The motor movement, reducer and output shaft are sequentially connected in transmission. The check assembly is connected to the output shaft. The check assembly includes a housing, a friction sleeve and a one-way check bearing. The one-way check bearing, friction sleeve and housing are sequentially sleeved on the output shaft from the inside to the outside. The housing is fixedly connected to the reducer, the friction sleeve is fixedly connected to the housing, and the one-way check bearing and the friction sleeve are interference fit.

2. A one-way non-return motor for electric curtains according to claim 1, characterized in that: The friction sleeve is a PEEK friction sleeve.

3. The one-way non-return motor for electric curtains according to claim 1, characterized in that: The outer peripheral wall of the friction sleeve is provided with a plurality of convex ridges arranged at equal intervals, and the inner peripheral wall of the shell is provided with grooves matched with the convex ridges.

4. A one-way non-return motor for electric curtains according to claim 1, characterized in that: The reducer includes a base, an inner ring gear, an input gear, a first-stage planetary gear, a first-stage planetary carrier, a second-stage planetary gear, a second-stage planetary carrier, a third-stage planetary gear and an output planetary carrier. The base is fixedly connected to the motor movement, the inner ring gear is fixedly connected to the base, the outer shell is fixedly connected to the inner ring gear, the input gear is transmission-connected to the output end of the motor movement, the input gear, the first-stage planetary gear, the first-stage planetary carrier, the second-stage planetary gear, the second-stage planetary carrier, the third-stage planetary gear and the output planetary carrier are installed in the inner ring gear and transmission-connected in sequence, the first-stage planetary gear, the second-stage planetary gear and the third-stage planetary gear are all meshed with the inner ring gear, and the output planetary carrier is transmission-connected to the output shaft.

5. A one-way non-return motor for electric curtains according to claim 4, characterized in that: A shaft sleeve is sleeved on the output shaft at the transition between the outer shell and the inner gear ring.

6. A one-way non-return motor for electric curtains according to claim 5, characterized in that: A gasket is provided between the shaft sleeve and the output planet carrier.

7. The one-way non-return motor for electric curtains according to claim 5, characterized in that: The output shaft is provided with a retaining spring, which is located between the shaft sleeve and the friction sleeve. The output shaft is provided with a retaining groove that matches the retaining spring.

8. The one-way non-return motor for electric curtains according to claim 5, characterized in that: A circle of annular protrusions is convexly provided on the inner wall of the shell, and a circle of outwardly convex edges is provided on the shaft sleeve, and the convex edges are blocked and connected with the annular protrusions.

9. The one-way non-return motor for electric curtains according to claim 4, characterized in that: The output planet carrier and the output shaft are in flat fit.

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