CN117468820A - Chain box assembly for electric window opener, electric window opener and electric window - Google Patents

Abstract

The invention relates to a chain box assembly for an electric window opener, an electric window opener and an electric window. In particular, the chain case assembly for a power window includes: a housing defining an internal space and including a left side plate (2) and a right side plate (3) opposed to each other; -a chain member (6), a portion of the chain member (6) being arranged in the inner space and comprising a plurality of pivotably connected chain units (61); a sprocket assembly (11), the sprocket assembly (11) being arranged in the interior space and comprising a gear wheel (111) and a ratchet wheel (112) coaxial, the ratchet wheel (112) being for engagement with the chain unit (61). The housing, the chain member (6) and the sprocket assembly (11) are detachably connected. According to the invention, the sprocket assembly itself is easy to produce and assemble, and a quick detachable assembly between the sprocket assembly and the corresponding assembly of the electric window opener can be achieved.

Description

Chain box assembly for electric window opener, electric window opener and electric window

Technical Field

The invention relates to the field of electric window openers, in particular to a chain box assembly for an electric window opener, an electric window opener and an electric window, wherein the chain box assembly is improved in terms of an assembly structure.

Background

This section provides background information related to the present invention, which does not necessarily constitute prior art.

An electric window opener is a device that converts electric power into a pushing force that pushes a window open or a pulling force that pulls a window closed. The electric window opener replaces manpower to realize automatic opening and closing of the window, thereby providing great convenience for life of people, and particularly when a remote control module and a weather sensing module (such as a rainwater sensing module) are integrated in the electric window opener, a user can remotely realize opening and closing of the window by means of the remote control module based on signals transmitted by the weather sensing module without on-site manual control.

However, the electric window openers of the related art currently adopt an integral structure, that is, each of the components of the electric window openers (the components including the chain case component) is integrated in a single housing and/or parts in each component are fixedly and non-detachably connected or integrally formed, which has a problem in that, once a certain component or a certain part fails to cause the electric window openers to be used normally, the electric window openers must be replaced in their entirety, but cannot be replaced for the single component or the single part that has failed. This undoubtedly increases the maintenance costs of the chain case assembly and thus the motorized window treatment.

Disclosure of Invention

The present invention provides a chain case assembly for an electric window opener that solves at least one of the above-mentioned problems in the related art.

It is another object of the present invention to provide a form fit structure to enable quick and removable assembly between the parts of the chain case assembly.

It is another object of the present invention to provide a form fit structure to enable quick and removable assembly between the chain case assembly and the corresponding assembly in the motorized window treatment.

Another object of the present invention is to prevent interference between the wire harness and other components in the chain case assembly.

It is a further object of the present invention to monitor the position of the chain member and control accordingly to prevent the chain member from being over pulled.

It is another object of the present invention to provide a durable, strong chain case assembly and a motorized window treatment.

According to a first aspect of the present invention, there is provided a chain case assembly for a power window opener. The chain box assembly for the electric window comprises: a housing defining an internal space and including left and right side plates opposed to each other; a chain member, a portion of which is disposed in the interior space and includes a plurality of pivotably connected chain units; a sprocket assembly disposed in the interior space and including a coaxial gear and a ratchet for engagement with the chain unit. The housing, the chain member and the sprocket assembly are detachably connected.

In the above chain case assembly for a power window, the right side plate may extend further to one side than the left side plate.

In the above chain case assembly for an electric window, at least one of the left side plate and the right side plate is provided with a form fit structure.

In the above chain case assembly for an electric window opener: at a first side of the left side plate and/or the right side plate, protrusions protruding towards one side with respect to the side plate body are provided at two corners, respectively, and/or at an opposite second side of the left side plate and/or the right side plate, at two corners, respectively, indentations are provided.

In the above chain case assembly for a power window, the protruding portion of the left side plate is recessed inward with respect to the main surface of the left side plate.

In the above chain case assembly for an electric window, an arc-shaped protruding portion located between the protruding portions is further provided at the first side portion of the left side plate.

In the above-described chain case assembly for a power window, at the first side portion of the left side plate, the protruding portion at the upper corner portion and the protruding portion at the lower corner portion are different in size in the up-down direction, and/or the position of the arc-shaped protruding portion in the up-down direction is deviated from the intermediate position.

In the above-described chain case assembly for an electric window, the housing further includes a top plate and a bottom plate that are opposed to each other, and the top plate and the bottom plate are respectively provided with an upper rail and a lower rail for guiding the chain member at corresponding positions.

In the above chain case assembly for an electric window opener: at a first side of the bottom plate, a mating pin is provided and/or at a second side of the top plate and/or the bottom plate, a connecting bead having a substantially L-shaped cross-sectional shape is provided.

In the above-mentioned chain case assembly for an electric window, the housing further includes an end cover detachably connected with the left side plate and the right side plate, the end cover including mounting recesses for fitting with the corresponding connection structures of the left side plate and the right side plate, respectively.

In the above chain case assembly for an electric window opener: the housing further comprises a chain head stopper, wherein an opening for allowing the chain member to pass through is formed in the chain head stopper, the chain member comprises a head chain unit and a chain head which are connected through a connecting pin, the chain head is provided with a boss, and the boss is used as a stop piece for preventing the chain head from being rolled into the inner space through the opening.

In the chain box assembly for the electric window, the chain head limiting block comprises a pin hole and a matching inclined plane adjacent to the pin hole.

In the above-described chain case assembly for an electric window, the chain case assembly for an electric window further includes a position feedback device for sensing that the chain member reaches a fully extended state.

In the above-mentioned chain box assembly for electric window, the chain member includes a tail chain unit, the position feedback device includes a cam and a limit switch that can be pressed by the cam, the cam set up in the tail chain unit and the limit switch set up in the left side board.

In the above chain case assembly for an electric window opener: the chain member is provided with a pin shaft and includes a tail chain unit, the pin shaft passes through a through hole of the tail chain unit, and shaft holes are provided at the left side plate and the right side plate, and both ends of the pin shaft are supported in the shaft holes.

In the above-described chain case assembly for an electric window, a bearing hole for supporting the shaft of the sprocket assembly is formed in a portion of the right side plate that extends beyond the left side plate.

In the above chain case assembly for a power window, the ratchet has a diameter smaller than that of the gear, and the ratchet is closer to the right side plate than the gear.

In the above-described chain case assembly for an electric window, the left side plate is provided with at least one wire harness holding portion for holding and fixing a wire harness.

In the above-described chain case assembly for an electric window, the constituent members of the housing are provided with overlapping portions adapted to overlap each other, and the overlapping portions are provided with mounting holes through which fasteners pass, so that the constituent members of the housing can be detachably connected to each other.

According to a second aspect of the present invention, there is provided an electric window opener. The electric window opener comprises the chain box assembly for the electric window opener.

According to a third aspect of the present invention, there is provided a power window. The motorized window includes a motorized window treatment as described above.

According to the invention, the chain wheel assembly is convenient to produce and assemble because the related parts of the chain wheel assembly are connected in a detachable assembly mode. In addition, since the sprocket assembly is provided with the form fit structure for being fitted with other components of the electric window opener, rapid detachable assembly between the sprocket assembly and the gear case can be realized, thereby improving production and assembly efficiency. In addition, such modular and removable assembly also allows for ease of removal and maintenance after installation and use of the motorized window treatment, thereby improving customer satisfaction.

Drawings

The figures show some embodiments of the inventive technique by way of example only, but the invention is not limited to the embodiments shown in the figures.

FIG. 1 is an exploded view of a chain case assembly.

FIG. 2a is a perspective view of a chain magazine assembly; FIG. 2b is a rear view of the chain case assembly; FIG. 2c is a bottom view of the chain case assembly; FIG. 2d is a front view of the chain magazine assembly; and FIG. 2e is a top view of the chain case assembly.

Fig. 3 is a schematic cross-sectional view showing the chain case assembly with the chain member in a fully retracted state.

Fig. 4 is a schematic cross-sectional view showing the chain case assembly with the chain member in a fully extended state.

FIG. 5a is a perspective view of an end cap; FIG. 5b is a front view of the end cap; and fig. 5c is a view of the end cap from the end cap side.

FIG. 6a is a bottom view of the left side plate; FIG. 6b is a view of the left side plate from the end cap side; and fig. 6c is a front view of the left side plate.

FIG. 7a is a front view of the right side plate; FIG. 7b is a top view of the right side plate; and fig. 7c is a perspective view of the right side plate.

Fig. 8 is a perspective view of the top plate.

Fig. 9 is a perspective view of the base plate.

Fig. 10 is a perspective view showing a chain member.

Fig. 11 is a schematic diagram showing the positional relationship of the cam and the limit switch.

FIG. 12a is a perspective view of the chain head stopper as seen from the top; and FIG. 12b is a longitudinal cross-sectional view of the chain head stopper.

FIG. 13a is a side view of the sprocket assembly; FIG. 13b is a front view of the sprocket assembly; and FIG. 13c is a perspective view of the sprocket assembly.

Detailed Description

The invention provides a chain box assembly for an electric window opener. Compared with the chain box assembly in the related art, the chain box assembly for the electric window opener has the advantages of being convenient to produce, install and detach, and being convenient to quickly and detachably assemble the chain box assembly and other assemblies of the electric window opener. Hereinafter, various improvements of the present invention will be described in connection with the specific structure of the chain case assembly of the present invention.

The chain case assembly for the electric window according to the present invention includes a housing, a chain member 6, and a sprocket assembly 11, and the housing, the chain member 6, and the sprocket assembly 11 are detachably connected. As shown in fig. 1, the housing may include: a left side plate 2 (in fig. 1, the left side plate is located on the rear side so may also be referred to as a rear side plate); a right side plate 3 (in fig. 1, the right side plate is located on the front side so as to be also referred to as a front side plate) opposite to the left side plate 2; an end cap 1; a top plate 4; a bottom plate 5; a chain head stopper 8.

As shown in fig. 1 and 10, the chain member 6 includes a plurality of chain units 61, each chain unit 61 being pivotably connected to its adjacent chain units 61. The chain unit 61 in the chain member 6 is adapted to engage with a ratchet wheel (output sprocket) 112 in the sprocket assembly 11 so as to extend or retract as the ratchet wheel 112 rotates. The plurality of chain units 61 includes a head chain unit 61a, a middle head chain unit(s), and a tail chain unit 61b.

Referring to fig. 12a and 12b, the chain head stopper 8 (the chain head stopper 8 forms a part of the housing of the chain case assembly) is provided with an opening 81 for allowing the chain member 6 to pass out of or into the housing (i.e., the opening 81 serves as an opening for the chain member 6 to extend or retract). To avoid the chain member 6 from fully retracting into the housing by the ratchet wheel 112 continuing to rotate in the direction of retracting the chain member 6 in the fully retracted state (as shown in fig. 3), the chain member 6 may be provided with a chain head 10 and the chain head 10 includes a stop-acting boss 101. Specifically, the chain head 10 is pivotally connected to the head chain unit 61a by the connecting pin 9. The outer dimension of the boss 101 of the chain head 10 is larger than the dimension of the opening 81 of the chain head stopper 8. When the chain member 6 is retracted and the boss 101 abuts the chain head stopper 8, the boss 101 prevents the chain member 6 from being further retracted to serve as a stopper. When the control means of the electric window opener, which may be provided in the electric control box assembly of the electric window opener, recognizes that the chain member 6 is blocked to stop the retraction, the power supply to the ratchet wheel 112 may be stopped, for example, by stopping the motor of the motor assembly of the gear box of the electric window opener, thereby stopping the ratchet wheel 112.

The chain case assembly may also include a position feedback device for stopping rotation of the sprocket assembly 11 upon sensing that the chain member 6 is in the fully extended condition (as shown in fig. 4), thereby preventing damage to the motorized window treatment by continued rotation of the ratchet 112 by the chain member 6 in the fully extended condition.

For example, the position feedback device may include a cam 62 and a limit switch (e.g., a micro switch) 21. At the tail chain unit 61b, a cam 62 is provided, preferably, the cam 62 is fixedly connected to the tail chain unit 61b so as to be movable integrally with the tail chain unit 61b (for example, the cam 62 has a shaft portion passing through a through hole of the tail chain unit 61b and the shaft portion may be interference-fitted with the tail chain unit 61 b). The chain member 6 is provided with a pin 12 for restraining a tail chain unit 61b as a tail end of the chain member 6. The cam 62 may be provided with pin holes through which the pin shafts 12 pass (this also corresponds to the through holes of the pin shafts 12 passing through the tail chain units 61 b) and both end portions of the pin holes may be supported in shaft holes provided in the left and right side plates 2 and 3 so that the pin shafts 12 pivotally support the tail chain units 61b and the cam 62. This connection also allows the chain member 6 to be detachably connected to the housing. Preferably, the cam portion of the cam 62 is disposed on the left side of the chain member 6 facing the left side plate 2. Accordingly, a limit switch 21 is provided on the inner side surface of the left side plate 2 facing the chain member 6 at a position adjacent to the cam 62. The limit switch 21 is used to signal the control device to stop the motor and thus the sprocket assembly 11 when the cam 62 is in contact with and presses it.

Further preferably, the limit switch 21 may be provided with a contact element 211, which contact element 211 senses the cam 62 in contact with the cam 62. Specifically, in the fully extended state of the chain member 6, the tail chain unit 61b is pulled so that the cam 62 rotates, whereby the cam 62 (specifically, the protrusion of the cam portion of the cam 62) presses the contact element 211.

The position feedback means may further comprise a wire harness 24 for signal feedback to the control means and optionally power the limit switch 21, in particular when the cam 62 is in contact with the contact unit 211 to press the contact unit 211, the limit switch 21 generates a contact signal and feeds this contact signal back to the control means for relevant control, e.g. to stall the sprocket assembly 11.

Although the position feedback device is shown in the drawings as the cam 62 mounted to the chain member 6 and the limit switch 21 mounted to the left side plate 2 by way of example, the configuration of the position feedback device is not limited thereto, but may be any device capable of sensing that the chain member 6 is in a fully extended state.

For example, the position feedback device may include a light emitting element provided at a position of the left side plate 2 near the opening 81, and a light shielding element provided at a specific chain unit of the chain member 6 (the chain unit is just near the opening 81 when the chain member 6 is in the fully extended state so that the light shielding element can shield light emitted from the light emitting element). During travel of the chain member 6, the light emitting element emits a continuous light beam in the length direction of the left side plate until the light blocking element attached thereto blocks the light beam when the specific chain unit passes, thereby generating a signal based on this blocking and feeding the signal back to the control device for relevant control, thereby stalling the sprocket assembly 11.

For another example, the position feedback device may include a magnetic/electric field generating and sensing element provided at a position of the left side plate 2 near the opening 81 and a magnetic/electric field perturbing element provided at a specific chain unit of the chain member 6 so as to cause a significant perturbation of the magnetic/electric field when the specific chain unit passes the magnetic/electric field generated by the magnetic/electric field generating and sensing element, so as to generate a signal based on the perturbation and feed the signal back to the control device for related control, thereby stalling the sprocket assembly 11.

Although the position feedback device is shown and described as being provided on the side of the chain member 6 facing the left side plate 2 and the inner side of the left side plate 2 facing the chain member 6 by way of example, the position feedback device may be provided on the side of the chain member 6 facing the right side plate 3 and the inner side of the right side plate 3 facing the chain member 6 as desired. Furthermore, in addition to the position feedback means for sensing the fully extended state of the chain member 6 described above, position feedback means for sensing the fully retracted state of the chain member 6 may be provided, so that the motor can be actively stopped when the chain member 6 reaches the fully retracted state. Such a position feedback device may be, for example, a micro-switch arranged between the boss 101 of the chain head 10 and the chain head stopper 8.

Referring to fig. 6a to 6c, views of the left side plate 2 are shown. The left side plate 2 is provided with at least one wire harness clamping portion 22, which wire harness clamping portion 22 is in the form of a clip to clamp and fix the wire harness 7 passing through the chain case assembly at the wire harness clamping portion 22 to avoid interference of the wire harness 7 with members such as the sprocket assembly 11 and the chain member 6 within the chain case assembly. Preferably, at least one wire harness clamping portion 22 is provided at a position of the left side plate 2 near the top and near the sprocket assembly side to draw the wire harness 7 out of the chain box assembly from the top thereof. For example, referring to fig. 4, the state in which the wire harness 7 is clamped in the wire harness clamping portion 22 is clearly shown in the drawing, and the wire harness 7 is drawn out from the top of the chain case assembly by the wire harness clamping portion 22 located at the top. Further, at least one harness holding portion 22 may be provided at a position of the left side plate 2 near the bottom and near the end cover side. The wire harness 7 is a wire harness different from the wire harness 24 for the position feedback device described above, and as will be described in detail below, the wire harness 7 is used to connect the surrounding environment sensing device to the control device.

In addition, the left side plate 2 adopts a so-called quick-connection design, and in particular, the left side plate 2 is provided with a shape matching structure so as to realize quick and convenient assembly and detachable connection of the chain box assembly and other assemblies (such as a gear box) of the electric window opener. The form-fitting structure may be, but is not limited to, a male-female structure. Two corners of the left side plate 2 of the chain case assembly for connection with other components of the electric window opener (e.g., the gear box) are respectively provided with a protruding portion 23 protruding to one side (i.e., further toward the gear box) with respect to the left side plate 2, and the protruding portion 23 is preferably provided with a screw hole. The protruding portion 23 is recessed inward with respect to the main surface of the left side plate 2. Further, alternatively, the protruding portion 23 at the upper corner is different in size (height) in the up-down direction from the protruding portion 23 at the lower corner, and in the illustrated embodiment, the protruding portion 23 at the upper corner is larger in size in the up-down direction than the protruding portion 23 at the lower corner. Further, on the left side (sprocket assembly side) of the left side plate 2 as in fig. 6c, between the protruding portions 23, arc-shaped protruding portions (protruding lengths of the arc-shaped protruding portions are shorter than protruding lengths of the protruding portions 23) are also provided. The shaft hole for supporting one end of the pin 12 provided at the left side plate 2 described above is adjacent to the arc-shaped protrusion (see fig. 6 c), and the arc-shaped protrusion prevents the shaft hole from being located too close to the edge of the left side plate so that the stable supporting effect of the shaft hole on the pin 12 can be improved. In the illustrated embodiment, the arcuate projection is positioned further up (i.e., offset from a middle position in the up-down direction) in the up-down direction. The provision of the recess (L-shaped notch) at the corner of the gearbox where the chain case assembly is connected with the protrusion 23, allows for a quick and efficient assembly of the gearbox and the chain case assembly by means of the form fit of the recess and the protrusion 23 (i.e. a temporary positioning of the assembly between the two assemblies or an accurate definition of the position relative to each other can be provided), thereby improving the assembly efficiency. Furthermore, the arc-shaped protrusion may be adapted to the middle arc-shaped recess of the gearbox. Thus, not only are the individual components of the chain case assembly detachably connected, but also the individual components of the electric window opener are detachably connected with each other, so that when the electric window opener fails, only the individual components or the individual components of the individual components need to be replaced, and the whole electric window opener or the whole components do not need to be replaced. In addition, the different sizes of the protruding parts at the upper corner and the lower corner and the positioning of the arc protruding parts on the upper side from the center can play a foolproof role in assembly between the chain wheel assembly and the corresponding assembly so as to avoid wrong assembly and reverse assembly.

Further, as shown in fig. 6c, at the right side of the left side plate 2 (the side close to the end cap and referred to as the second side), notches (generally L-shaped notches) are provided at both corners and a (straight) bead is provided between the two notches, these form-fitting structures cooperating with corresponding form-fitting structures of the end cap to facilitate a convenient detachable assembly of the left side plate 2 with the end cap.

The chain case assembly may be assembled with a gear case of the electric window opener on the left side (sprocket assembly side) as shown in fig. 1 to constitute the electric window opener. Referring to fig. 1, the length of the left side plate 2 is shorter than the length of the right side plate 3, i.e., the right side plate 3 extends further toward the direction away from the end cover (toward the direction toward the gear case) than the left side plate 2. Accordingly, the left side plate of the gearbox extends further away from the chain case assembly than the right side plate. Thus, such a configuration that the right side plate 3 of the chain case assembly is longer than the left side plate 2 and the left side plate of the gear case is longer than the right side plate facilitates use of a portion of the left side plate of the gear case protruding beyond the right side plate and a portion of the right side plate of the chain case assembly protruding beyond the left side plate as assembly references when connecting the chain case assembly and the gear case of the electric window opener to each other, thereby facilitating improvement of assembly efficiency, ensuring assembly quality, and allowing the chain case assembly to be assembled to the gear case in a right-to-left (front-to-rear) direction to achieve so-called cross assembly.

As shown in fig. 7a, at the left side of the right side plate 3 (the side close to the sprocket assembly and referred to as the first side), there are provided (flat) protrusions at the two corners and (straight) recesses between the two protrusions, these form-fitting structures cooperate with corresponding form-fitting structures of the right side plate of the gearbox to also facilitate a convenient detachable assembly of the chain case assembly with the gearbox. In addition, on the right side of the right side plate 3 (the side close to the end cap), notches (generally L-shaped notches) are provided at the two corners and a (straight) bead is provided between the two notches, these form-fitting structures cooperating with corresponding form-fitting structures of the end cap to facilitate a convenient detachable assembly of the right side plate 3 with the end cap.

The motorized window treatment may also include ambient sensing devices to enable automatic opening or closing of the window depending on the temperature, humidity, weather conditions, air quality, etc. in the environment. For example, the ambient sensing device may be a rain sensing device to feed back the rain signal to the control device via the harness 7 when the rain sensing device senses rain, whereby the control device issues a control signal to retract the chain member 6 into the housing of the chain case assembly to automatically close the window, thereby achieving the objective of preventing rain from entering the house. As another example, the ambient sensing device may be a sensing device capable of sensing wind, snow, etc. to effect closing of the window in a similar manner when blowing wind or snowing.

In addition, the ambient sensing device may be an air quality sensing device to timely control the retraction of the chain member 6 to close the window to stop the convection of air from the indoor and outdoor when the air quality is sensed to be poor.

The wire harness 7 has an end 71 exposed to the outside of the chain case assembly for connection with an ambient sensing device. The wiring harness 7 is used for feeding back the environmental signal sensed by the ambient sensing means to the control means for corresponding control and optionally for powering the ambient sensing means.

Preferably, the outer support plates (e.g., left side plate 2, right side plate 3, etc.) of the chain case assembly forming the outer surface are metal profiles, particularly sheet metal profiles, thereby increasing the durability and robustness of the motorized window treatment.

The top plate 4 (fig. 8) and the bottom plate 5 (fig. 9) constituting a part of the housing of the chain case assembly are opposed to each other. According to the present invention, the top plate 4 and the bottom plate 5 are separate and double as an upper guide member and a lower guide member, respectively, that guides the chain member 6, i.e., the top plate 4 and the bottom plate 5 are provided with an upper guide rail 41 and a lower guide rail 51, respectively, for guiding the chain member 6 at corresponding positions. The pair of guide rails 41 and 51 protrude from the main surface 42 of the top plate 4 and the main surface 52 of the bottom plate 5, respectively, toward the inside of the chain case assembly, thereby forming spaces for accommodating the chain members 6 between the pair of guide rails 41 and 51, respectively. The split upper and lower guide members and the top and bottom plates of the housing serve as the upper and lower guide members, which facilitates the detachable assembly of the housing while simplifying the structure. Further, referring to fig. 3, 8 and 9, at the right side portions (the side portions near the end caps and referred to as the second side portions) of the top and bottom plates 4 and 5, there is provided a connection flange CE having a substantially L-shaped cross-section (the connection flange extending inward from the bodies of the top and bottom plates 4 and 5 and then extending rightward again) which cooperates with corresponding form-fitting structures of the end caps (refer to fig. 3 and 4) to thereby facilitate easy and detachable assembly of the top and bottom plates 4 and 5 with the end caps. Further, referring to fig. 3 and 9, at the left side portion (the side portion near the sprocket assembly and referred to as the first side portion) of the bottom plate 5, there are provided a fitting pin 53 in the form of a substantially cylindrical body and a fitting slope 54 adjacent to the fitting pin, which are fitted with corresponding form-fitting structures of the chain head stopper 8 as a part of the housing of the chain case assembly (i.e., a pin hole 83 provided to the chain head stopper 8 and a fitting slope 84 adjacent to the pin hole) (refer to fig. 3 and 4) to thereby facilitate easy and detachable assembly of the bottom plate 5 and the chain head stopper 8.

The sprocket assembly 11 is described next. Referring to fig. 13 a-13 c, details of sprocket assembly 11 are shown. The sprocket assembly 11 includes a gear (input sprocket) 111 and a ratchet (output sprocket) 112, and the gear 111 and the ratchet 112 coaxially rotate at the same angular velocity. The gear 111 meshes with an output gear in the gearbox of the electric window opener and drives the shaft 115 to rotate, the shaft 115 in turn drives the ratchet 112 to rotate at the same angular velocity as the gear 111, and the ratchet 112 drives the chain unit 61 in the chain member 6 engaged therewith to extend or retract. In a preferred embodiment, the ratchet 112 has a smaller diameter than the gear 111, and the ratchet 112 is closer to the right side plate 3 than the gear 111. The structure and arrangement are adapted to the structure and arrangement of the input gear and the output gear in the last stage gear of the gearbox. Thereby, the chain case assembly is allowed to be assembled to the gear case in a direction from right to left (front to back) to achieve a so-called cross-assembly, and after so-assembly, the gear 111 can be meshed with the output gear of the gear case.

The ratchet 112 is provided with a through hole at a central portion thereof to be coupled to the shaft 115. The ratchet 112 and the shaft 115 adopt an interference fit, thereby ensuring that the ratchet 112 and the shaft 115 can rotate synchronously. Alternatively, a keyed connection is used between the ratchet 113 and the shaft 115, thereby reliably ensuring that the ratchet 112 and the shaft 115 can rotate in synchronization. A spacer 114 in the form of a boss is provided between the ratchet wheel 112 and the gear wheel 111, which spacer 114 serves on the one hand to define the mounting position of the ratchet wheel 112 on the shaft 115 and on the other hand to ensure that a space is left between the gear wheel 111 and the ratchet wheel 112 for the passage of the chain unit 61 in the chain member 6. Furthermore, a nut 113 is provided, the nut 113 applying a certain pressing force to the ratchet 112, thereby further securing the installation position of the ratchet 112 on the shaft 115.

Referring to fig. 7a to 7c, a bearing hole 31 for receiving a bearing housing for supporting the shaft 115 is opened at a portion of the right side plate 3 extending beyond the left side plate. In this way, a detachable connection of the sprocket assembly to the housing is achieved. Further, at a portion of the left side plate of the gear box extending beyond the right side plate, another bearing hole for supporting the shaft 115 is provided. That is, the sprocket assembly 11 is commonly supported by the housing of the gear case and the housing of the chain case assembly. In this way, stable support of the sprocket assembly 11 is achieved while also facilitating removable assembly of the sprocket assembly 11 with other components in the chain case assembly.

As shown in fig. 5a to 5c, an end cap 1, which is a part of the housing, is used to close the chain case assembly from one end. The end cap 1 includes mounting portions (mounting recesses) 103 for connection and fitting with the left side plate 2 and the right side plate 3, respectively, where the structure of the mounting portions 103 is described taking the mounting portion 103 on one side surface 104 as an example, and the mounting portion 103 having the same structure as the mounting portion 103 on the one side surface 104 is provided on the other side surface. The mounting portion 103 is recessed inwardly with respect to the one side surface 104 by a depth corresponding to the thickness of the corresponding one of the left side plate 2 and the right side plate 3 (specifically, the straight protruding edge of the corresponding side plate) fitted in the mounting portion 103 so that the corresponding side plate is flush with the one side surface 104 to form a uniform outer surface after the corresponding side plate is fitted with the end cap 1, which not only facilitates easy detachable fitting but also increases the aesthetic appearance of the chain case assembly. The mounting portion 103 is provided with fastener mounting holes (e.g., screw holes) 105 opened at positions corresponding to the screw holes on the respective side plates to connect the respective side plates and the end cap 1 to each other by means of fasteners such as screw connectors. Furthermore, connection structures are provided at the upper and lower sides of the end cap 1, which are adapted to the substantially L-shaped connection beads of the top plate 4 and the bottom plate 5, so that the substantially L-shaped connection beads of the top plate 4 and the bottom plate 5 can be matingly placed at the connection structures (see fig. 3 and 4) and the top plate 4 and the bottom plate 5 are flush with the end cap 1 after the top plate 4 and the bottom plate 5 are assembled with the end cap 1, thereby forming a uniform outer surface. The mounting portion 103 of the end cover 1 provided with the mounting hole corresponds to an overlapping portion according to the present application, and portions of the left and right side plates 2 and 3 provided with the respective mounting holes adapted to overlap the mounting portion 103 also correspond to an overlapping portion according to the present application. Instead of between the end cap 1 and the left side plate 2/right side plate 3, between, for example, the top plate 4 and the left side plate 2/right side plate 3 and between the bottom plate 5 and the left side plate 2/right side plate 3, overlapping portions adapted to overlap each other may be provided with mounting holes (such as screw holes) through which fasteners (such as screw fasteners) pass, so that the respective constituent parts of the housing can be detachably connected to each other.

In this document, the use of the azimuthal terms "left," "right," "top," "bottom," "upper" and "lower," etc. are for ease of description only and should not be taken as limiting.

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the embodiments of the present invention are not limited thereto, but can be varied within the scope of the accompanying claims.

Claims (21)

1. A chain box assembly for an electric window opener, comprising: a housing defining an internal space and including a left side plate (2) and a right side plate (3) opposed to each other; -a chain member (6), a portion of the chain member (6) being arranged in the inner space and comprising a plurality of pivotably connected chain units (61); a sprocket assembly (11), said sprocket assembly (11) being arranged in said interior space and comprising a gear wheel (111) and a ratchet wheel (112) coaxial, said ratchet wheel (112) being for engagement with said chain unit (61),

characterized in that the housing, the chain member (6) and the sprocket assembly (11) are detachably connected.

2. The chain case assembly for a power window according to claim 1, wherein the right side plate (3) extends further to one side than the left side plate (2).

3. The chain case assembly for a power window according to claim 1, wherein at least one of the left side plate (2) and the right side plate (3) is provided with a form-fitting structure.

4. The chain case assembly for a power window according to claim 3, wherein:

at a first side portion of the left side plate (2) and/or the right side plate (3), protruding portions (23) protruding toward one side with respect to a side plate body are provided at two corner portions, respectively, and/or

At the opposite second side of the left side plate (2) and/or the right side plate (3) notches are provided at two corners, respectively.

5. The chain case assembly for a power window according to claim 4, wherein the protruding portion (23) of the left side plate (2) is recessed inward with respect to the main surface of the left side plate.

6. The chain case assembly for a power window according to claim 5, wherein at the first side of the left side plate (2), arc-shaped protruding portions between the protruding portions (23) are further provided.

7. The chain case assembly for a power window according to claim 6, wherein at the first side portion of the left side plate (2), a protruding portion (23) located at an upper corner portion is different in size from a protruding portion (23) located at a lower corner portion in an up-down direction, and/or a position of the arc-shaped protruding portion in the up-down direction is deviated from an intermediate position.

8. The chain case assembly for a power window according to any one of claims 1 to 7, wherein the housing further includes a top plate (4) and a bottom plate (5) that are opposed to each other, the top plate (4) and the bottom plate (5) being provided with an upper rail (41) and a lower rail (51) for guiding the chain member (6), respectively, at corresponding positions.

9. The chain case assembly for a power window according to claim 8, wherein:

at a first side of the base plate (5) a mating pin (53) is provided, and/or

At the second side of the top plate (4) and/or the bottom plate (5), a connecting flange (CE) having a substantially L-shaped cross-section is provided.

10. The chain case assembly for a power window according to any one of claims 1 to 7, wherein the housing further comprises an end cover (1) detachably connected with the left side plate (2) and the right side plate (3), the end cover (1) comprising mounting recesses (103) for mating with corresponding connection structures of the left side plate (2) and the right side plate (3), respectively.

11. The chain case assembly for a power window according to any one of claims 1 to 7, wherein:

the housing further comprises a chain head limiting block (8), an opening (81) for allowing the chain member (6) to pass through is formed in the chain head limiting block (8), and

the chain member (6) comprises a head chain unit (61 a) and a chain head (10) connected by a connecting pin (9), the chain head (10) being provided with a boss (101), the boss (101) acting as a stop preventing the chain head (10) from being rolled into the inner space via the opening (81).

12. The chain box assembly for a power window as set forth in claim 11, wherein said chain head stopper (8) includes a pin hole (83) and a mating ramp (84) adjacent said pin hole.

13. The chain box assembly for a power window according to any one of claims 1 to 7, wherein the chain box assembly for a power window further comprises a position feedback device for sensing that the chain member (6) reaches a fully extended state.

14. The chain case assembly for the electric window according to claim 13, wherein the chain member (6) includes a tail chain unit (61 b), the position feedback device includes a cam (62) and a limit switch (21) that can be pressed by the cam, the cam (62) is provided to the tail chain unit (61 b) and the limit switch (21) is provided to the left side plate (2).

15. The chain case assembly for a power window according to any one of claims 1 to 7, wherein:

the chain member (6) is provided with a pin (12) and comprises a tail chain unit (61 b), the pin (12) passing through a through hole of the tail chain unit (61 b), and

shaft holes are formed in the left side plate (2) and the right side plate (3), and two ends of the pin shaft (12) are supported in the shaft holes.

16. The chain case assembly for a power window according to any one of claims 1 to 7, wherein a bearing hole (31) for supporting a shaft (115) of the sprocket assembly (11) is opened at a portion of the right side plate (3) extending beyond the left side plate (2).

17. The chain case assembly for the electric window according to any one of claims 1 to 7, wherein a diameter of the ratchet (112) is smaller than a diameter of the gear (111), and the ratchet (112) is closer to the right side plate (3) than the gear (111).

18. The chain case assembly for a power window according to any one of claims 1 to 7, wherein the left side plate (2) is provided with at least one wire harness clamping portion (22) for clamping and fixing a wire harness (7).

19. The chain case assembly for a power window according to any one of claims 1 to 7, wherein constituent parts of the case are provided with overlapping portions adapted to overlap each other, the overlapping portions being provided with mounting holes through which fasteners pass so that the constituent parts of the case can be detachably connected to each other.

20. A motorized window treatment comprising a chain case assembly for a motorized window treatment according to any one of claims 1-19.

21. A motorized window characterized in that it comprises a motorized window treatment according to claim 20.