CN218934140U

CN218934140U - Transmission structure and window

Info

Publication number: CN218934140U
Application number: CN202222838084.9U
Authority: CN
Inventors: 白宝鲲
Original assignee: Taodino Intelligent Technology Dongguan Co ltd
Current assignee: Taodino Intelligent Technology Dongguan Co ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-04-28
Anticipated expiration: 2032-10-26

Abstract

The utility model relates to a transmission structure. Comprises a base; a transmission member; the positioning piece is in a first state of being fixedly connected with the base and in a second state of being un-fixedly connected with the base; in the first state, the positioning piece is in contact with the transmission piece so as to limit the position of the transmission piece relative to the base; in the second state, the positioning piece can move relative to the base until being separated from the transmission piece, and the transmission piece can slide relative to the base. The transmission structure is connected with other connecting pieces, but the other connecting pieces have larger length errors due to production and other reasons, the length of the whole transmission structure is changed along with the change of the transmission piece relative to the base position and the limitation of the positioning piece on the transmission position, and the length of the other connecting pieces is lengthened or shortened due to various errors, so that the installation is smoothly completed without the need of blanking again, and a large amount of time and cost are saved.

Description

Transmission structure and window

Technical Field

The utility model relates to the technical field of building hardware doors and windows, in particular to a transmission structure and a window.

Background

The inward opening and inward tilting window is a type of window commonly used at present, and the inward opening and inward tilting of the window is controlled by rotating and pulling a hinge structure in the window through a handle, wherein a transmission structure and a plurality of rod-shaped connecting pieces are arranged between the hinge structure and the handle, and the transmission piece in the transmission structure is connected with the rod-shaped connecting pieces.

The rod-shaped connecting piece is affected by machining errors and the like, so that dimensional errors are easy to exist in the rod-shaped connecting piece, when the transmission structure is installed, the transmission piece in the transmission structure cannot be normally connected with the rod-shaped connecting piece, and further the window is affected to fall inwards, and at the moment, the rod-shaped connecting piece is required to be produced by re-blanking, so that time and labor are delayed, and larger cost is also paid.

Disclosure of Invention

Based on this, it is necessary to provide a transmission structure aiming at the problem of production error, and under the condition that the length error exists in the rod-shaped connecting piece, the transmission structure still can realize the connection with the rod-shaped connecting piece, and the rod-shaped connecting piece is produced without blanking again. The technical proposal is as follows:

a base;

a transmission member;

the positioning piece is in a first state of being fixedly connected with the base and in a second state of being un-fixedly connected with the base;

in the first state, the positioning piece is in contact with the transmission piece so as to limit the position of the transmission piece relative to the base; in the second state, the positioning piece can move relative to the base until being separated from the transmission piece, and the transmission piece can slide relative to the base.

In one embodiment, in the second state, the positioning member is movably connected with the base.

In one embodiment, one of the positioning piece and the transmission piece is provided with teeth, and the other is provided with tooth grooves;

in the first state, teeth are clamped into tooth grooves; in the second state, the teeth are separated from the tooth grooves.

In one embodiment, the positioning member is provided with a first rack and the transmission member is provided with a second rack;

in the first state, the first rack is meshed with the second rack; in the second state, the first rack is separated from the second rack.

In one embodiment, the transmission member is provided with an open slot, two areas positioned on the opposite side in the slot wall of the open slot are respectively provided with a second rack, and two side walls positioned on the opposite side of the positioning member are respectively provided with a first rack;

in the first state, the positioning piece is positioned in the open slot; in the second state, the positioning piece is separated from the open groove.

In one embodiment, the positioning device further comprises an elastic piece, wherein the elastic piece limits the movable range of the positioning piece when the positioning piece is movably connected with the base through resilience force.

In one embodiment, the device further comprises a mounting piece connected to the base, one end of the elastic piece is propped against the base, and the other end of the elastic piece is propped against the mounting piece;

in the second state, the positioning piece is configured to overcome the elasticity of the elastic piece by external force so as to move relative to the base; after the external force applied to the positioning piece disappears, the elastic piece is used for driving the positioning piece to reset through self resilience force.

In one embodiment, two protrusions are provided in the base, and in the first state the positioning member is located between the two protrusions.

In one embodiment, the transmission member is provided with a limiting portion, and in the second state, the limiting portion can abut against the opposite base to limit a maximum distance of movement of the transmission member relative to the base.

The window further comprises a transmission structure with adjustable length in any embodiment, a fan section bar and a frame section bar, and the base is arranged on the fan section bar and/or the frame section bar.

The transmission structure (hereinafter referred to as transmission structure) comprises a base, a transmission member and a positioning member, wherein the base can be mounted on a fan section bar and/or a frame section bar, and whether the base is fixedly mounted or movably mounted can be determined according to requirements. The positioning piece can be fixedly connected with the base, and can be released from being fixedly connected with the base, such as being separated from the base or being movably connected with the base, and when the positioning piece is fixedly connected with the base, the positioning piece is contacted with the transmission piece, so that the relative position of the transmission piece and the base can be limited. When the locating piece is not fixedly connected with the base, the locating piece can move relative to the base until the locating piece is separated from the transmission piece, and the transmission piece can slide relative to the base. Therefore, when the rod-shaped connecting piece cannot be connected with the transmission piece in the transmission structure due to the size error, the position of the transmission piece can be changed under the second state, so that the rod-shaped connecting piece can adapt to the position of the rod-shaped connecting piece, connection transmission of the rod-shaped connecting piece and the transmission piece can still be realized under the condition that the size error exists in the rod-shaped connecting piece, the handle and the hinge structure of the window can be mutually matched to realize the inward opening and inward tilting function, other rod-shaped connecting pieces are not required to be manufactured by blanking again, and various costs are effectively reduced.

Drawings

FIG. 1 is a schematic diagram of a transmission structure in one embodiment of the present utility model;

fig. 2 is an exploded view of the transmission structure of the embodiment of fig. 1.

Reference numerals: a base 110; a protrusion 111; a transmission member 120; a second rack 121; an open groove 122; a limiting part 123; a positioning member 130; a first rack 131; a threaded fastener 132; a lifting lever 133; a mounting member 140; and an elastic member 150.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Fig. 1 shows a schematic view of a transmission structure of adjustable length.

Referring to fig. 1, the present application provides a transmission structure, including: the base 110, the transmission member 120 and the positioning member 130, wherein the positioning member 130 has a first state fixedly connected with the base 110 and a second state un-fixedly connected with the base 110; in the first state, the positioning member 130 contacts the driving member 120 to limit the position of the driving member 120 relative to the base 110; in the second state, the positioning member 130 can move relative to the base 110 until separated from the transmission member 120, and the transmission member 120 can slide relative to the base 110.

The above-mentioned transmission structure includes a base 110, a transmission member 120 and a positioning member 130, wherein the base 110 can be mounted on a fan profile and/or a frame profile, and can be fixed or movable according to requirements. The positioning element 130 may be fixedly connected with the base 110, or may be disconnected from the base 110, for example, the positioning element 130 may be separated from the base 110 or may be movably connected with the base 110 through a movable connecting element, and when the positioning element 130 is fixedly connected with the base 110, the positioning element 130 contacts with the transmission element 120, so as to limit the relative position of the transmission element 120 and the base 110. When the positioning member 130 is released from the fixed connection with the base 110, the positioning member 130 can move relative to the base 110 until being separated from the transmission member 120, and the transmission member 120 can slide relative to the base 110. Therefore, when the rod-shaped connecting piece cannot be connected with the transmission piece 120 in the transmission structure due to the size error, the position of the transmission piece 120 can be changed in the second state, so that the rod-shaped connecting piece can adapt to the position of the rod-shaped connecting piece, connection transmission of the rod-shaped connecting piece and the transmission piece can still be realized under the condition that the size error exists in the rod-shaped connecting piece, the handle and the hinge structure of the window can be matched with each other to realize the inward opening and inward tilting function, other rod-shaped connecting pieces are not required to be manufactured by blanking again, and various costs are effectively reduced.

It can be understood that when the positioning member 130 is switched to the second state, after the transmission member 120 after the position adjustment is connected to the rod-shaped connecting member, the positioning member 130 needs to be switched to the first state again, and the positioning member 130 contacts with the transmission member 120 again, so that the transmission member 120 is kept in the current position and is fixedly connected to the base 110, thereby realizing stable connection with the rod-shaped connecting member.

In one embodiment, referring to fig. 1 or 2, the base 110 in fig. 1 has a sliding groove structure, and the transmission member 120 slides reciprocally in the sliding groove relative to the base 110, so as to limit the instability of the whole structure caused by up-and-down vibration due to other external forces when the transmission member 120 slides relative to the base 110. Of course, in other embodiments, a sliding slot may not be provided, and the driving member 120 slides on the surface of the base 110.

Specifically, in some embodiments, in the first state, the positioning member 130 and the base 110 may be fixedly connected by a threaded fastener. In other embodiments, the positioning member 130 may be fixedly connected to the base 110 in a variety of ways, and if the positioning member is not required to be detached again, the positioning member may be directly welded to the base in a length determined by the first time of installation; or fixedly connected through a connecting piece such as a rivet.

In some embodiments, in the second state, the positioning member 130 is in a separated state from the base 110, and there is no connection therebetween. Alternatively, preferably, in some embodiments, the positioning member 130 is movably coupled to the base 110 when in the second state. The positioning piece 130 is prevented from being completely separated from the base 110 due to space influence in the installation process, so that the problem of difficult reinstallation is avoided, and the positioning piece 130 is more beneficial to realizing fixed connection again due to certain limitation on the position of the positioning piece 130 relative to the base 110 during movable connection. The following embodiments will be described based on the use of a flexible connection.

Fig. 2 is an exploded view of the transmission structure.

Referring to fig. 2, in one embodiment, the positioning member 130 is movably connected to the base 110 by a rivet, the fixed connection is achieved by a threaded fastener 132, and releasing the threaded fastener 132 releases the fixed connection of the positioning member 130 to the base 110, but the positioning member 130 is still movably connected to the base 110 by the rivet, rather than completely separated from the base 110.

Likewise, the movable connection modes are various and can be determined according to specific requirements, and are not described herein.

In one embodiment, one of the positioning member 130 and the transmission member 120 is provided with teeth, and the other is provided with tooth grooves; in the first state, teeth are clamped into tooth grooves; in the second state, the teeth are separated from the tooth grooves.

Specifically, the positioning member 130 is provided with teeth, the corresponding position on the driving member 120 is provided with a tooth slot, and if the teeth are clamped into the tooth slot, the tooth slot limits the teeth, so that the relative position of the driving member 120 and the positioning member 130 is limited, and the driving member 120 is limited to the current position. If the teeth are separated from the tooth grooves, the limit of the tooth grooves to the teeth is released, and the transmission member 120 can slide relative to the base 110 to change the position thereof, thereby being connected with the rod-shaped connection member having a dimensional error. Alternatively, in other embodiments, the tooth and socket positions may be interchanged.

In this embodiment, the gear is engaged with or disengaged from the tooth slot to limit or release the limit of the transmission member 120, and in the first state, the limit mode is more reliable, and the transmission member 120 is not easy to disengage from the positioning member 130.

Preferably, in one of the embodiments, the positioning member 130 is provided with a first rack 131, and the transmission member 120 is provided with a second rack 121; in the first state, the first rack 131 is engaged with the second rack 121; in the second state, the first rack 131 is separated from the second rack 121.

Specifically, in the present embodiment, the first rack 131 corresponds to a plurality of teeth arranged in succession, and the second rack 121 corresponds to a plurality of tooth slots arranged in succession, that is, a plurality of sets of teeth are engaged with the tooth slots. Similarly, the first rack 131 corresponds to a plurality of tooth slots arranged in succession, and the second rack 121 corresponds to a plurality of tooth teeth arranged in succession.

As described above, when the positioning member is switched to the second state, after the transmission member after the position adjustment is connected to the rod-shaped connecting member, the positioning member needs to be switched to the first state again to keep the transmission member at the current position, so as to achieve stable connection with the rod-shaped connecting member. In this embodiment, after the first state is switched to again, the position of the transmission member can be more stably limited by the cooperation of the plurality of groups of teeth and tooth grooves, so that the stability of the whole transmission structure is ensured.

Referring to fig. 1 and 2, the positioning member 130 is provided with teeth, the transmission member 120 is provided with tooth grooves, and the number and the interval of the teeth can be determined according to different requirements. Through the cooperation of tooth and tooth's socket, when being in the first state, i.e. locating part 130 and base 110 fixed connection, locating part 130 and driving medium 120 realize fixed connection, and indirectly, driving medium 120 and base 110 realize fixed connection, and when being in the second state, i.e. locating part 130 and base 110 swing joint, the tooth deviate from the tooth's socket, and driving medium 120 can slide to the required position along base 110 length direction is reciprocal, then the locating part 130 is fixed again.

Also, in another embodiment, the positioning member 130 may be provided with tooth slots, and the transmission member 120 may be provided with teeth. According to different demands, for example, continuous small-distance adjustment is needed, the fault tolerance rate is increased, the transmission piece 120 and the base 110 can be provided with racks, referring to fig. 2, the positioning piece 130 is provided with a first rack 131, the transmission piece 120 is provided with a second rack 121, teeth and tooth grooves are connected stably, the tooth distance is smaller, the length of the transmission structure is convenient to adjust, the continuity of the adjustment distance is increased due to the arrangement of the racks, the smaller the tooth distance between the teeth on the racks is, the more convenient the adjustment is, the connection is arranged at intervals corresponding to the teeth, and the stability of the rack connection coordination is better.

In one embodiment, the transmission member 120 is provided with an open slot 122, two areas of the slot wall of the open slot 122 located at opposite sides are respectively provided with a second rack 121, and two side walls of the positioning member 130 located at opposite sides are respectively provided with a first rack 131. In the first state, the positioning member 130 is located in the open slot 122; in the second state, the positioning member 130 is disengaged from the open slot 122.

Referring to fig. 2, specifically, the transmission member 120 is provided with an open slot 122, the positioning member 130 is fixedly connected with the base 110 and is located in the open slot 122, the slot walls on two sides in the open slot 122 are respectively provided with a second rack 121, two sides of the positioning member 130, which are in contact with the transmission member 120, are provided with first racks 131, and compared with single-side contact stress, the double-side contact stress is more balanced in the static state, and meanwhile, the transmission structure is more stable in the moving state.

In one embodiment, the device further includes an elastic member 150, where the elastic member 150 limits the movable range of the positioning member 130 when movably connected to the base 110 through a resilience force.

Referring to fig. 1 and 2, in one embodiment, in addition to the components of the above embodiment, the elastic member 150 is further included, and when in the first state, i.e., when the positioning member 130 is fixedly connected to the base 110, the elastic member 150 is in a normal state, and is neither stretched nor compressed. Preferably, the elastic member 150 may also be in a stretched state or a compressed state, so that the elastic member 150 may make the positioning member 130 have a tendency to be tightly attached to the base 110 by a resilient force, so as to make the first state more stable. When the positioning member 130 is required to be in the second state, i.e. the positioning member 130 is separated from the base 110, the elastic member 150 is gradually compressed, and generates a pulling force on the positioning member 130, and when the pulling force is maximum, the positioning member 130 is farthest from the base 110, and when the position of the transmission member 120 is determined to be fixed, the elastic member 150 only needs to release the positioning member 130, so that the positioning member 130 can be pulled back to the surface of the base 110. The elastic member 150 can automatically reset the positioning member without manually contacting the positioning member with the base 110 again, and the operation is more convenient.

In the embodiment of fig. 2, the elastic member 150 is a spring, and in other embodiments, other elastic members 150 may be selected, and the elastic member 150 may be stretched when the positioning member 130 is separated from the base 110.

In addition, in other embodiments, the positioning member 130 further includes a lifting rod 133, referring to fig. 1 or 2, the lifting rod 133 is located on the positioning member 130, the lifting rod 133 may be integrally installed with the positioning member 130, or may be fixedly connected by welding or the like, and the lifting rod 133 may be convenient for a user to separate the positioning member 130 from the base 110.

In one embodiment, the device further includes a mounting member 140 connected to the positioning member 130, wherein one end of the elastic member 150 abuts against the base 110, and the other end abuts against the mounting member 140; in the second state, the positioning member 130 is configured to overcome the elasticity of the elastic member 150 by an external force to move relative to the base 110; after the external force applied to the positioning member 130 is removed, the elastic member 150 is used to drive the positioning member 130 to return by its own resilience.

Referring to fig. 2, specifically, the mounting member 140 and the movably connected connecting member are a member, in the embodiment of fig. 2, a rivet is formed, the elastic member 150 is sleeved on the rivet portion of the rivet, one end of the elastic member abuts against the base 110, the other end abuts against the head of the rivet, and the base 110 is located between the rivet head and the positioning member 130. When the positioning member 130 is far away from the base 110, the positioning member 130 drives the rivet head to move towards the base 110, so that the distance between the rivet head and the base 110 is shortened, the elastic member 150 is compressed, when the positioning member 130 is loosened, the elastic force of the elastic member 150 drives the rivet to move towards the direction away from the base for resetting, the distance between the base 110 and the rivet head is increased again, the positioning member 130 connected with the rivet moves synchronously until the rivet is attached to the surface of the base 110 again, and then the positioning member and the base are fixedly connected again through the threaded fastener.

Also, in other embodiments, such as when the window is longer and the base 110 is longer, there may be more than one mounting member 140 and more than one elastic member 150 to balance the overall stress

In one embodiment, two protrusions 111 are provided in the base 110, and in the first state, the positioning member 130 is located between the two protrusions 111.

Referring to fig. 1, it can be seen that two protrusions 111 are provided in the sliding groove of the base 110, and the positioning member 130 is located between the two protrusions 111 when fixedly connected to the base 110, and also limits the position of the transmission member 120. The two protrusions 111 are arranged to limit the position of the positioning piece 130 along the length direction of the base 110, so that the positioning piece 130 can slightly displace along the length direction of the base 110 due to the fact that the connecting piece which is fixedly connected is loosened, and then the displacement of the transmission piece 120 is driven, the precision of the whole transmission structure is reduced, noise is brought, and accordingly the inward opening effect of the window is affected.

In other embodiments, the base 110 may also be provided with two protrusions 111 inwardly, which is affected by space, such as when the base 110 is provided with an inner cavity in which the transmission member 120 slides; or the base 110 may be internally grooved, and the positioning members 130 are placed therein, and two sides contacting with the transmission member 120 are placed outside the grooves, so that the method is different and will not be repeated.

In one embodiment, the transmission member 120 is provided with a limiting portion 123, and in the second state, the limiting portion 123 can abut against the opposite base 110 to limit the maximum distance that the transmission member 120 moves relative to the base 110.

Referring to fig. 1, it can be seen that, at this time, the limiting portion 123 is already attached to the base 110, which means that the driving member 120 cannot move in the direction toward the base 110, and the limiting portion 123 can prevent the driving member 120 from being excessively displaced, resulting in unstable driving structure.

Similarly, if the transmission member 120 needs to move away from the base 110, a limiting portion 123 may be disposed outside the opening groove 122 to prevent the transmission member 120 from being completely separated from the base 110, and correspondingly, a specific member of the blocking limiting portion 123 needs to be disposed on the base 110.

In one embodiment, the transmission member 120 may be an integrally formed member, or may be a plurality of separately manufactured members fixedly connected, and the transmission member 120 is divided into a plurality of member combinations, which can effectively reduce manufacturing cost.

The present utility model also provides a window comprising a sash profile and a frame profile, and the window employs the length-adjustable transmission structure of any of the above embodiments, and the base 110 is mounted on the sash profile and/or the frame profile to satisfy various functions of the window. Meanwhile, the base 110 may be fixedly connected with a window to serve as a transmission terminal, or may be slidably connected with the window to serve as a transmission medium.

Similarly, although the utility model is used for a plurality of structures on the inwardly opened and inwardly inverted window, the utility model is not limited to the window structure, and the transmission structure with adjustable length provided by the utility model is essentially a transmission piece, so that the transmission structure can be applied to any building component needing transmission according to specific situations and requirements.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A transmission structure, comprising:

a base;

a transmission member;

the positioning piece is provided with a first state fixedly connected with the base and a second state un-fixedly connected with the base;

in the first state, the positioning piece is in contact with the transmission piece so as to limit the position of the transmission piece relative to the base; in the second state, the positioning member is movable relative to the base until separated from the transmission member, and the transmission member is slidable relative to the base.

2. The transmission structure of claim 1, wherein in the second state, the positioning member is movably connected to the base.

3. A transmission structure according to claim 1, wherein one of the positioning member and the transmission member is provided with teeth, and the other is provided with tooth grooves;

in the first state, the teeth are clamped into the tooth grooves; in the second state, the teeth are separated from the tooth grooves.

4. A transmission structure according to claim 3, wherein the positioning member is provided with a first rack and the transmission member is provided with a second rack;

5. The transmission structure according to claim 4, wherein the transmission member is provided with an open slot, two areas of the slot wall of the open slot, which are located at opposite sides, are provided with the second racks, and two side walls of the positioning member, which are located at opposite sides, are provided with the first racks;

6. The transmission structure according to claim 2, further comprising an elastic member that restricts a movable range of the positioning member when movably connected to the base by a return force.

7. The transmission structure according to claim 6, further comprising a mounting member connected to the positioning member, wherein one end of the elastic member abuts against the base, and the other end abuts against the mounting member;

in the second state, the positioning piece is configured to overcome the elastic force of the elastic piece by external force so as to move relative to the base; after the external force applied to the positioning piece disappears, the elastic piece is used for driving the positioning piece to reset through self resilience force.

8. A transmission structure according to claim 1, wherein two protrusions are provided in the base, and wherein in the first state the positioning member is located between the two protrusions.

9. A transmission structure according to claim 1, wherein the transmission member is provided with a limiting portion, and in the second state, the limiting portion is capable of abutting against the base to limit a maximum distance of movement of the transmission member relative to the base.

10. A window comprising the transmission structure of any one of claims 1 to 9.