CN217897547U - Transmission box and push-pull door and window - Google Patents

Abstract

The invention provides a transmission box and a push-pull door window, which comprise a shell, a driving assembly and a moving member, wherein the moving member is connected with the shell in a sliding manner, the driving assembly is rotationally connected with the shell, the driving assembly is connected with the moving member in a transmission manner, the driving assembly is used for driving the moving member to move relative to the shell, one end or two ends of the moving member are provided with a connecting part, the connecting part is provided with an adjusting piece, and the adjusting piece is used for connecting external equipment and adjusting the distance between the transmission box and the external equipment; the handle is in transmission connection with the transmission box, and the transmission box is in transmission connection with the pulley assembly; the transmission box and the push-pull door and window have the advantages of reasonable structure and convenient use.

Description

Transmission box and push-pull door and window

Technical Field

The invention belongs to the technical field of hardware, and particularly relates to a transmission box and a push-pull door window.

Background

Doors or windows are basic components of modern buildings, and are distinguished according to the opening modes of doors and windows, and the doors and windows are mainly divided into casement doors and windows and push-pull doors and windows. The sliding door and window mainly comprises door and window leaves and a track, namely, the door and window leaves reciprocate along the track to realize the opening or closing of the door and window; meanwhile, due to the flexibility of opening, the sliding door and window can be separated from the space and can not occupy extra space when being opened, so that the sliding door and window is a door and window type which is relatively more frequently used, for example, the sliding door and window is used between a balcony and a living room to form separation and is also used between a kitchen and a restaurant. However, the push-pull type door and window in the prior art has certain inconvenience when in use; particularly, in order to facilitate the sliding door to be fixed or positioned on the rail at any time according to needs in the using process, for example, a young child in a house is prevented from randomly getting in and out of a balcony under the condition of ensuring basic ventilation and air permeability, and therefore, the pull-up type hardware is available on the market, the main working principle is that the pulley block on the door and window can lift up and down relative to the door and window body, namely, after the pulley block retracts relative to the rail or the sliding chute, the door and window body and the rail form static friction, and then the door and window form fixation, namely positioning, in an outer frame or on the rail, for example, the push-pull type hardware of the European standard C notch disclosed in the patent application number 201720561394.7. However, the push-pull type door and window in the prior art has certain inconvenience in the production or assembly process; particularly, the lifting push-pull type doors and windows, especially the lifting push-pull type windows, can be flexibly made into specifications with different sizes according to different use requirements, namely, for doors and windows with different sizes, the length of a transmission rod connected between a transmission box and a pulley assembly is often cut into fixed length and assembled, and due to the cutting precision, the stacking of comprehensive factors such as the overall precision of door and window assembly and the like, the consistency of the control state of the transmission box on the pulley assembly (such as lifting height) or the door and window produced by batch assembly cannot meet corresponding requirements, namely, the transmission distance between the transmission box and the pulley assembly cannot be or is not easy to be finely adjusted, and further, the inconvenience of the doors and windows in the production or assembly process is caused.

Disclosure of Invention

In view of this, the present invention aims to provide a push-pull door/window with reasonable structure and convenient use.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a transmission box, includes casing, drive assembly and moving part, the moving part with casing sliding connection, drive assembly with the casing rotates to be connected, drive assembly with the moving part transmission is connected, drive assembly is used for the drive the moving part for the casing removes, the one end or both ends department of moving part are provided with connecting portion, be provided with the regulating part on the connecting portion, the regulating part is used for connecting external equipment, the length of regulating part is adjustable, in order to adjust distance between transmission box and the external equipment.

As a further improvement of the transmission box, the adjusting part comprises a first pull rod, a second pull rod and a connecting part, a positive thread is arranged on the first pull rod, a negative thread is arranged on the second pull rod, one end of the first pull rod and one end of the second pull rod are both in threaded connection with the connecting part, the other end of the first pull rod and the other end of the second pull rod are respectively connected with the connecting part and external equipment, and when the connecting part is rotated, the distance between the first pull rod and the second pull rod is increased or decreased.

As a further improvement of the transmission box, the transmission box further comprises a first fixed seat and a second fixed seat, wherein a positive rotation thread is arranged on the first fixed seat, a negative rotation thread is arranged on the second fixed seat, the first fixed seat is screwed with the first pull rod, the second fixed seat is screwed with the second pull rod, the first fixed seat is fixedly connected with the moving part, and the second fixed seat is connected with external equipment.

As a further improvement of the transmission box, the adjusting piece comprises a first pull rod and a connecting piece, a first end of the first pull rod is provided with a forward-rotation thread, a second end of the first pull rod is provided with a reverse-rotation thread, and the connecting piece is sleeved and fixed on the first pull rod.

As a further improvement of the transmission box, the transmission box further comprises a first fixing seat and a second fixing seat, wherein a forward-rotation thread is arranged on the first fixing seat, a reverse-rotation thread is arranged on the second fixing seat, the first fixing seat is screwed with the first end of the first pull rod, the second fixing seat is screwed with the second end of the first pull rod, the first fixing seat is fixedly connected with the movable member, and the second fixing seat is connected with external equipment.

As a further improvement of the transmission box, the connecting piece is coaxial with the first pull rod or the second pull rod, the connecting piece is polygonal, and/or a plurality of hole sites are arranged in the circumferential direction of the connecting piece, and the hole sites are arranged in the radial direction of the connecting piece.

As a further improvement of the transmission box, the transmission box further comprises a trigger mechanism, the trigger mechanism is connected with the shell and is in transmission connection with the movable piece, the trigger mechanism enables the movable piece to be in a locked state relative to the shell under a state to be triggered, and the locked state of the movable piece relative to the shell is released after the trigger mechanism is triggered.

As a further improvement on the transmission box, the trigger mechanism includes a trigger block, an elastic member, a first guide post, and a first guide groove and a second guide groove which are arranged on the movable member, the first guide groove and the second guide groove form an included angle, the first guide groove is communicated with one end of the second guide groove, the trigger block is slidably connected with the movable member and/or the housing, the first guide post is fixedly connected with the trigger block, the first guide post is arranged in the first guide groove or the second guide groove and can slide along the first guide groove or the second guide groove, one end of the elastic member abuts against the housing, and the other end of the elastic member abuts against the trigger block;

when the trigger mechanism is in a state to be triggered, the elastic piece pushes the trigger block out of the shell, and the first guide column slides into the first guide groove;

when the trigger mechanism is in a non-trigger state, the trigger block is retracted into the shell, and the first guide column slides into the second guide groove.

As a further improvement of the transmission box, a second guide post is further arranged on the trigger block, a third guide groove is further arranged on the shell, the second guide post is fixedly connected with the trigger block, the second guide post is arranged in the third guide groove and can slide relative to the third guide groove, and the third guide groove is parallel to the first guide groove.

The utility model provides a push-pull type door and window, its includes handle, loose pulley assembly and as above transmission box, the handle with transmission box connects, transmission box with loose pulley assembly transmission is connected, the handle is used for the drive transmission box moves, transmission box basis is according to the action control of handle loose pulley assembly lifting or dropping, the regulating part is connected loose pulley assembly, the moving part passes through the regulating part with loose pulley assembly transmission, the regulating part is adjustable distance between transmission box and the loose pulley assembly.

Compared with the prior art, the invention has the following beneficial effects: through set up the regulating part on the transmission box, namely, realize finely tuning the transmission distance between transmission box and the loose pulley assembly through the regulating part in plug-type door and window, and then make the transmission box to loose pulley assembly's control accuracy or to door and window's control accuracy can reach corresponding demand, further, remedied because the length precision of transfer line and the door and window assemble the stack of comprehensive factors such as the whole precision and make the transmission box to loose pulley assembly's control (like the lifting height) or the door and window control state's of batch assembly production uniformity can not reach this technical problem that corresponding will, thereby the convenience of plug-type use of transmission box or door and window has been improved.

Drawings

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.

FIG. 1 is a schematic view of the overall structure of the transmission case of the present invention;

FIG. 2 is a schematic structural view of the transmission box in a state to be triggered according to the present invention;

FIG. 3 is a partially exploded view of the transmission case of the present invention;

FIG. 4 is a schematic cross-sectional view of the transmission case of the present invention;

FIG. 5 is a schematic structural view of another embodiment of the transmission case of the present invention;

FIG. 6 is a schematic view of the overall structure of the driving pulley block according to the present invention;

FIG. 7 is an exploded view of the drive pulley block of the present invention;

FIG. 8 is a schematic view of the overall structure of the driven pulley block of the present invention;

fig. 9 is an exploded view of the driven pulley block of the present invention.

Detailed Description

The technical solutions of the present invention are further described in detail in the following with reference to the accompanying drawings and specific embodiments, but the embodiments are not intended to limit the present invention, and in the present embodiments, it is understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only used for convenience of description of the present invention, and do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed and operated in specific orientations, and thus should not be construed as limiting the present invention.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like as used herein are for illustrative purposes only.

As shown in fig. 1 to 9, the present embodiment provides a push-pull window, which includes an outer frame (not shown), a sash body (not shown), a handle (not shown), a transmission case 01 and a pulley assembly 02; the outer frame forms a fan body frame, and a track for the fan body to move is arranged in the frame, namely, the fan body is arranged in the outer frame; of course, the outer frame may not be used directly, that is, the outer frame is manufactured on a building (such as a wall), and at this time, the track for the fan body to move is directly laid in the outer frame of the building; the handle is a handle arranged on the door or the window and controls the opening or the closing of the door or the window through the handle. The handle, transmission box 01 and loose pulley assembly 02 all install on the fan body, the handle is connected with transmission box 01 transmission, transmission box 01 is connected with loose pulley assembly 02 transmission, the handle passes through the transmission shaft, drive transmission box 01 and move if the square shaft, transmission box 01 then controls and makes loose pulley assembly 02 be in the lifting state according to the action of handle, and sliding pulley assembly 02 forms the support to the fan body under the lifting state, specifically, loose pulley assembly 02 in this embodiment installs the bottom at the fan body, the pulley in lifting state sliding pulley assembly 02 stretches out or outstanding for the fan body this moment and then forms the support to the fan body, namely, loose pulley assembly will be the fan body with the frame or the fan body with the orbital conversion stiction between the frame track of frame into rolling friction, and then make the fan body can be along the frame or be located the orbital flexible left and right sides removal in the frame, namely, make the fan body can freely move along the length direction of frame in order to realize opening or half-closing of door and window. Further, the transmission box 01 is further provided with a trigger mechanism 03, one end of the trigger mechanism 03 is in transmission connection with the transmission box 01, the other end of the trigger mechanism 03 extends out of the transmission box 01, when the side edge of the door window in the longitudinal direction of the sash body is abutted or touched with the side edge of the outer frame (closed state), the trigger mechanism 03 can be extruded and triggered, and at the moment, the trigger mechanism 03 relieves the lifting state of the pulley assembly 02; at this moment, under the effect of gravity, the fan body then can directly fall into the frame or the fan body then can directly fall into the track in the frame, perhaps make loose pulley assembly be in and fall or shrink the state, and then make the fan body and frame form the stiction, thereby make the fan body can not the nimble removal for the frame, promptly, avoided the fan body of door and window to make the fan body take place the problem of resilience for the edge of frame because of the striking with the frame, and then be convenient for the smooth closure of fan body. Further, when the door and window sash stops at any position in the outer frame or on the track, the triggering mechanism 03 can be triggered manually, that is, the triggering mechanism 03 is pressed and started by hands, so that the triggering mechanism 03 releases the lifting state of the pulley assembly 02 relative to the sash, for example, the door moving sash can be in a smaller opening degree as required, so as to meet the requirements of indoor and outdoor ventilation or air exchange, and prevent the household young children from easily moving the door sash to enter and exit the balcony.

As shown in fig. 1 to 5, in a preferred embodiment, the transmission box 01 includes a housing 05, a driving assembly 06 and a movable element 07, the movable element 07 is installed in the housing 05, and the movable element 07 is slidably connected to the housing 05, that is, the movable element 07 is movable relative to the housing 05, the driving assembly 06 is rotatably connected to the housing 05, the driving assembly 06 is drivingly connected to the movable element 07, the driving assembly 06 is configured to receive an external torque and drive the movable element 07 to move relative to the housing 05, the driving assembly 06 is configured to connect to a handle, and the handle of the handle is rotated to enable the driving assembly 06 to operate, further, an input end of the driving assembly 06 is rotated from a first angular position to a second angular position relative to the housing 05, and after the external torque is removed, that is, the input end of the driving assembly 06 automatically resets from the second angular position to the first angular position relative to the housing 05, a connecting portion 67 is provided at one end or both ends of the movable element 07, and the connecting portion 67 is configured to connect to and drive an external device to operate. Particularly, in a door window, a driving assembly of the transmission box is used for being connected with a handle, namely, the driving assembly 06 can be driven to do by rotating the handle of the handle, for example, the driving assembly 06 can be driven to rotate 90 degrees when the handle of the handle rotates 90 degrees, and then the pulley assembly 02 is controlled by the transmission box; further, owing to set up the drive assembly 06 that can reset by oneself on transmission box 01 to can make and accomplish the door and window operation back and remove the handle of turning round by oneself behind the moment of torsion power of effect on the handle and reset, and then avoided in the push-and-pull door because the handle of transmission box unblock back under the action of gravity, promptly, loose pulley assembly 02 is turning round fast receiving the action of gravity of the door and window fan body and the handle of backdrive handle, and then probably hit and injure the human body.

As shown in fig. 1 to 5, in a preferred embodiment, the transmission case 01 includes a housing 05, a driving element 06, a movable element 07, and a triggering mechanism 03, wherein the movable element 07 is slidably connected to the housing 05, the driving element 06 is rotatably connected to the housing 05, the driving element 06 is drivingly connected to the movable element 07, and the driving element 06 is configured to drive the movable element 07 to move along a length direction of the housing 05, so that the triggering mechanism 03 is in a to-be-triggered state and the movable element 07 is in a locked state with respect to the housing 05, and after the triggering mechanism 03 is triggered, the locked state of the movable element 07 with respect to the housing 05 can be released, so that the movable element 07 cooperates with the triggering mechanism 03 and/or the latch assembly 04 to finally implement the operation of the transmission case. Further, the triggering mechanism 03 comprises a triggering block 08, an elastic member 09, a first guiding column 10, and a first guiding groove 11 and a second guiding groove 12 which are arranged on the movable member 07; in this embodiment, an included angle of 90 degrees is formed between the first guide groove 11 and the second guide groove 12, and one end of the first guide groove 11 is communicated with one end of the second guide groove 12, that is, the first guide groove 11 and the second guide groove 12 together form an L-shaped guide groove, the trigger block 08 is slidably connected with the movable element 07 and/or the housing 05, the first guide post 10 and the trigger block 08 form a fixed connection by riveting, welding or interference fit, the first guide post 10 is disposed in the first guide groove 11 or the second guide groove 12 and can slide along the first guide groove 11 and/or the second guide groove 12, one end of the elastic element 09 abuts against the housing 05, and the other end abuts against the trigger block 08, where the elastic element 09 is a spring in this embodiment. Further, when the transmission box 01 is in the first state (corresponding to the pulley assembly 02, the transmission box makes the pulley assembly in the lifted state), the elastic member 09 pushes or ejects the trigger block 08 out of the housing 05 under the elastic force, and the first guide post 10 slides into the first guide groove 11; when the transmission case 01 is in the second state (relative to the pulley assembly 02, the transmission case releases the lifting state of the pulley assembly 02), the trigger block 08 retracts into the housing 05 and compresses the elastic member 09, and the first guide post 10 slides into the second guide groove 12. Further, a second guide post 13 is further arranged on the trigger block 08, a third guide groove 14 is further arranged on the housing 05, the second guide post 13 is fixedly connected with the trigger block 08, the second guide post 13 is arranged in the third guide groove 14 and can slide relative to the third guide groove 14, and the third guide groove 14 is parallel to the first guide groove 11, so that the trigger block 08 can reciprocate relative to the radial direction of the axis of the length direction of the housing. Further, the longitudinal axis of the first guide groove 11 is parallel to the longitudinal axis of the trigger block 08, and the longitudinal axis of the second guide groove 12 is parallel to the longitudinal axis of the movable element 07 or the housing 05. The seventh guide groove 53 and the sixth guide column 54 which is matched with the seventh guide groove 53 are further respectively arranged at two ends of the movable member 07 in the length direction, the sixth guide column 54 is arranged in the seventh guide groove 53, the sixth guide column 54 is fixed to the housing 05 through riveting, the seventh guide groove 53 is parallel to the axis of the movable member 07 in the length direction, that is, when the transmission box is longitudinally arranged, the sixth guide column 54 is matched with the seventh guide groove 53, so that the movable member 07 reciprocates up and down relative to the housing 07, or the movable member 07 reciprocates relative to the axis of the housing 07 in the length direction. Further, when the door and window is in the initial state, the transmission box is longitudinally arranged, and at this time, transmission is performed through the handle, that is, when the driving assembly 06 is driven to move, the driving assembly 06 drives the moving member 07 to slide (slide upward) along the axis of the length direction of the housing, at this time, the second guide groove 12 slides relative to the first guide post 10 until the first guide post 10 corresponds to the first guide groove 11, at this time, because the axis of the first guide groove 11 is parallel to the third guide groove 14 and is no longer constrained by the second guide groove 12, the trigger block 08 is pushed out from the housing 05 under the elastic force of the elastic member 09 (the first state), and at the same time, because the axis of the first guide groove 11 and the movement axis of the 07 form a 90-degree flat angle, at this time, the first guide post can limit the movement of the moving member, that is, the lifting pulley state of the moving member 02 relative to the fan body is maintained. Similarly, when the sash body of the door or window is closed, the sash body touches the outer frame and presses the trigger block 08, or the trigger block 08 is directly pressed by the hand, the trigger block 08 overcomes the elastic acting force of the elastic piece 09 and retracts towards the shell 05, and can drive the first guide column 10 to move along the first guide groove 11 until the first guide column 10 corresponds to the second guide groove 12; at this time, the pulley assembly 02 generates a downward pulling force on the movable member 07 due to the gravity action from the fan body, so that after the first guide post 10 corresponds to the second guide groove 12, the movable member 07 moves downward relative to the housing 05 under the pulling force, and the lifting state of the pulley assembly 02 relative to the fan body is released, so that the fan body directly falls on the outer frame or the fan directly falls on the rail and forms static friction with the rail, that is, the fan body cannot move flexibly relative to the outer frame.

As shown in fig. 1-4, in a preferred embodiment, the transmission case 01 is further provided with a latch bolt assembly 04, when the side edge of the fan body touches the side edge of the outer frame, the trigger mechanism 03 and the latch bolt assembly 04 are activated, the trigger mechanism 03 releases the lifting state of the pulley assembly 02, and the latch bolt assembly 04 extends out of the fan body or the transmission case 01 and is connected with the outer frame; when the transmission box 01 controls the pulley assembly 02 to be in a lifting state according to the action of the handle, the bolt assembly 04 is retracted into the transmission box 01; further, when the sash body of the door and window is in a closed state relative to the outer frame and needs to be locked with the outer frame, the locking between the sash body and the outer frame is realized by the lock tongue at the moment; or, set up the lock body on the frame, the lock body mutually supports with spring bolt subassembly 04 and realizes the locking between the fan body and the frame, promptly, the lock body forms fixed connection with spring bolt subassembly 04, and then realizes the locking state between fan body and the frame. Specifically, in this embodiment, the latch bolt assembly 04 includes a latch bolt body 15, a third guide post 16, a fourth guide post 17, a fourth guide groove 18 and a fifth guide groove 19, the latch bolt body 15 is slidably connected to the movable member 07 and/or the housing 05, the fourth guide groove 18 is disposed on the latch bolt body 15, the third guide post 16 is fixedly connected to the movable member 07 and is disposed in the fourth guide groove 18, the fifth guide groove 19 is disposed on the housing 05, the fourth guide post 17 is fixedly connected to the latch bolt body 15 and is disposed in the fifth guide groove 19, the fifth guide groove 19 is parallel to the first guide groove 11 or the third guide groove 14, the fourth guide groove 18 is disposed obliquely with respect to the longitudinal axis of the latch bolt body 15, for example, the fourth guide groove 18 forms an included angle of 40 degrees with respect to the longitudinal axis of the latch bolt body 15; further, when the moving member 07 moves up and down, the third guiding post 16 is driven to move up and down, and the moving track of the guiding post 16 forms an included angle of, for example, 40 degrees with the axis of the fourth guiding groove 18, and meanwhile, due to the fourth guiding post 17 and the fifth guiding groove 19 cooperating therewith, the moving member 07 moves up and down, so that the bolt body 15 is forced to extend or retract relative to the housing 05. In this embodiment, when the latch bolt body 15 is in a retracted state relative to the housing 05 (the transmission box is in a locked state, that is, the transmission box controls and maintains the pulley assembly in a raised state relative to the door and window sash), the trigger block 08 of the trigger mechanism is in an extended state relative to the housing 05; alternatively, when the latch body 15 is in an extended state relative to the housing 05 (when the transmission case controls the pulley assembly in an unlocked state), the trigger block 08 is in a retracted state relative to the housing 05. Further, telescopic spring bolt body 15 can further eliminate the swing of the fan body in this embodiment, particularly, at the closed in-process of door and window, especially heavy door and window, often can produce the elastic oscillation because of the collision of fan body and frame, especially more obvious in the middle part of the longitudinal axis of the fan body of door and window, and the transmission box often also installs in the middle part of the fan body, consequently, when the fan body touches with the frame through trigger mechanism 03 relieve the lifting state to loose bolt assembly 02 start spring bolt assembly 04 simultaneously, namely, make spring bolt body 15 stretch into in the frame, and then slow down or eliminate the swing that the fan body produced because of striking with the frame. Furthermore, a groove is formed in the bolt body 15 in this embodiment, and a lock body matched with the bolt assembly 04 is further arranged on the outer frame, that is, the lock body is clamped with the groove in the bolt body 15, so that the fan body and the outer frame are locked.

As shown in fig. 2-5, in a preferred embodiment, the driving assembly 06 includes a base 20, a driving shaft 21, a torsion spring 22 and a driven pulley 23, the driving shaft 21 penetrates the housing 05 and can rotate relative to the housing 05, the base 20, the driven pulley 23 and the torsion spring 22 are all sleeved on the driving shaft 21, the driving shaft 21 and the driven pulley 23 can both rotate relative to the base 20, and the base 20 and the housing 05 are fixed by riveting or bolts. Further, a first limit block 24 is fixed on the base 20, a second limit block 25 is fixed on the driving shaft 21, a third limit block 26 is fixed on the driven wheel 23, the first limit block 24, the second limit block 25 and the third limit block 26 are arranged in the radial direction relative to the driving shaft 21, one end of the torsion spring 22 is connected with the base 20, and the other end is connected with the driving shaft 21; when the transmission box 01 is in the first state, the first limit block 24 is located between the second limit block 25 and the third limit block 26; when the transmission case 01 is in the first state, the second stopper 25 is located between the first stopper 24 and the third stopper 26. Through the mutual matching of the base 20, the driving shaft 21, the torsion spring 22, the driven wheel 23, the first limiting block fixed on the base 20, the second limiting block 25 on the driving shaft 21 and the third limiting block 26 on the driven wheel 23, the handle connected with the transmission box can be automatically reset after rotating by a corresponding angle; specifically, because the first limit block 24 is fixed to the base 20 and the driving shaft 21 is provided with the second limit block 25, the rotation angle of the driving shaft 21 relative to the base 20 does not exceed 360 degrees, and further, because the driven wheel 23 is provided with the third limit block 26, when the driving shaft 21 rotates, the third limit block is shifted by the second limit block 25 and the driven wheel 23 is driven to rotate relative to the base 20; further, after the driven part 23 rotates to a certain angle, the transmission cassette can be in and keep a first state (driving and enabling the pulley assembly 02 to be in a lifting state relative to the fan body), at the moment, after the torque acting on the handle is removed by the hand or when the torque acting on the handle is smaller than the elastic torque of the torsion spring 22, the driving shaft 21 is driven to rotate under the elastic torque of the torsion spring 22, namely, the handle of the handle connected with the driving shaft 21 is driven to rotate and return, namely, the second limiting block 25 on the driving shaft 21 is abutted against the first limiting block 24 on the base 20, and then the automatic return of the handle is formed; through setting up the drive assembly 06 that can make the automatic playback of handle, can avoid the fan body when relieving the lifting state, the fan body drives handle fast circle round and hit the human body and probably cause the injury under the effect of gravity.

As shown in fig. 5, in an embodiment, the driving assembly 06 further includes a first connecting rod 27, a first end of the first connecting rod 27 is hinged to the movable member 07, a second end of the first connecting rod 27 is hinged to the driven wheel 23, and a hinge point of the first connecting rod 27 and the driven wheel 23 is offset from an axial line of the driven wheel 23, that is, the movable member 07 is driven to reciprocate relative to the housing 05 by the cooperation of the eccentric driven wheel 23 and the first connecting rod 27.

In another embodiment, as shown in fig. 3, the driving assembly 06 further includes a rack 28, the rack 28 is fixed to the movable member 07 by riveting or bolting, the driven wheel 23 is a gear or a sector gear, and the driven wheel 23 is engaged with the rack 28, that is, the movable member 07 is driven to reciprocate relative to the housing 05 by the cooperation of the gear 23 and the rack 28. Further, still be provided with shaft hole 29 on the drive shaft 21, shaft hole 29 runs through drive shaft 21, and shaft hole 29 is polygon or internal spline, and shaft hole 29 in this embodiment is square shaft hole, carries out the transmission through the square shaft between the handle of handle and the transmission box promptly.

As shown in fig. 2 to 4, in a preferred embodiment, the transmission case 01 further includes a locking mechanism, the locking mechanism includes a stop member 30, a fifth guide column 31, a sixth guide slot 32, and a key cylinder mounting position 33 disposed on the housing 05, the stop member 30 is slidably connected to the housing 05, the sixth guide slot 32 is opened on the housing 05, the fifth guide column 31 is fixedly connected to the stop member 30, the fifth guide column 31 is disposed in the sixth guide slot 32 and can move relative to the sixth guide slot 32, a limit slot 34 is disposed on the movable member 07 and is matched with the stop member 30, and the key cylinder mounting position 33 is used for mounting a key cylinder for driving the stop member 30 to move; when the locking mechanism is in the locked state, the stop member 30 is carried along the sixth guide groove 32 in the limit groove 34, and when the locking mechanism is in the unlocked state, the stop member 30 is located away from the limit groove 34. Specifically, when the locking mechanism is in the locked state, the transmission case cannot be operated, for example, the transmission case cannot be operated and the pulley assembly 02 is in the lifted state, and for example, when the locking mechanism is in the locked state, the lifted state of the pulley assembly 02 is maintained.

As shown in fig. 4-5, in a preferred embodiment, the transmission case 01 includes a housing 05, a driving component 06, and a movable component 07, the movable component 07 is slidably connected to the housing 05, the driving component 06 is rotatably connected to the housing 05, the driving component 06 is drivingly connected to the movable component 07, the driving component 06 is configured to drive the movable component 07 to move or slide relative to the housing 05, a connecting portion 67 is disposed at one end or both ends of the movable component 07, and an adjusting component is disposed on the connecting portion 67, that is, the movable component 07 is drivingly connected to the pulley component through the adjusting component, so as to adjust a distance between the transmission case and the pulley component through the adjusting component. Further, the adjusting member includes a first pull rod 35, a second pull rod 36, and a connecting member 37, wherein one end of each of the first pull rod 35 and the second pull rod 36 is fixedly connected to the connecting member 37, in this embodiment, one end of each of the first pull rod 35 and the second pull rod 36 is connected to the connecting member 37 through a thread, or the connecting member 37 is respectively sleeved on the end of each of the first pull rod 35 and the second pull rod 36, and meanwhile, a jackscrew is also disposed on the connecting member 37, that is, after the first pull rod 35 and the second pull rod 36 are connected to the connecting member 37, the first pull rod 35 and the second pull rod 36 are both fixedly connected to the connecting member 37 through the jackscrew; the other end of the first pull rod 35 is screwed with the movable element 07 through threads, the other end of the second pull rod 36 is screwed with the sliding assembly 02 through threads, and further, the first pull rod 35 is provided with a forward-rotation thread, and the second pull rod 36 is provided with a reverse-rotation thread.

In another embodiment, one end of each of the first and second tie bars 35 and 36 is threadedly coupled to a coupling member, and the other end of each of the first and second tie bars 35 and 36 is coupled to a coupling member and an external device, such as a gear box and a pulley assembly, respectively, and when the coupling member 37 is rotated, the distance between the ends of the first and second tie bars 35 and 36 with respect to the central symmetry line of the coupling member 37 is increased or decreased.

Furthermore, due to factors such as different specifications of doors and windows, precision and the like, the transmission distance or transmission precision between the transmission box 01 and the pulley assembly 02 in the sash body of the doors and windows often cannot meet the use requirement; therefore, after the adjusting part is connected with the transmission box and the pulley assembly 02, the transmission distance between the transmission box and the pulley assembly 02 is often required to be finely adjusted through the adjusting part, so that the reliable opening or opening precision of the door and window is ensured, and the precision of the rotating angle of the handle (such as the handle of the handle is adjusted to be in a horizontal state) is realized in the opening and closing process of the door and window. Through set up the regulating part on the transmission box, promptly, realize finely tuning the transmission distance between transmission box and the loose pulley assembly through the regulating part in plug-type door and window, and then make the transmission box can reach corresponding demand to loose pulley assembly's control accuracy or to door and window's control accuracy.

Further, in another embodiment, the adjusting member includes a first pull rod 35 and a connecting member 37, wherein a forward thread is disposed at one end of the first pull rod 35, a backward thread is disposed at a second end of the first pull rod 35, and the connecting member 37 is detachably sleeved and fixed on the first pull rod 35, that is, only one pull rod is used, and the forward and backward threads are disposed at two ends of the pull rod, respectively. Further, the connecting member 37 is coaxial with the first pull rod 35 or the second pull rod 36, the connecting member 37 is polygonal, such as quadrilateral, hexagonal, and/or a plurality of holes 38 are provided in a circumferential direction of the connecting member 37, and the holes 38 are provided in a radial direction of the connecting member 37.

As shown in fig. 1 to 5, in a preferred embodiment, the adjusting member further includes a first fixing seat 68 and a second fixing seat (not shown), wherein the first fixing seat 68 is provided with a forward-rotation thread, the second fixing seat is provided with a reverse-rotation thread, the first fixing seat 68 is screwed with the first pull rod 35, the second fixing seat is screwed with the second pull rod 36, wherein the first fixing seat 68 is fixed with the moving member 07 by a bolt or by riveting, and the second fixing seat is fixedly connected with an external device such as a driving pulley block. Or, when the two ends of the first pull rod 35 are respectively provided with the first forward-rotation thread and the second backward-rotation thread, the first fixing seat 68 and the second fixing seat are respectively connected to the two ends of the first pull rod 35. Specifically, the connecting member 37 arranged in a polygonal shape may drive the first pull rod 35 and the second pull rod 36 to rotate by a wrench, or insert a rod into the hole 38 of the connecting member 37 to drive the first pull rod 35 and the second pull rod 36 to rotate, and meanwhile, since the first pull rod 35 and the second pull rod 36 are respectively provided with the positive and negative threads, when the connecting member 37 drives the first pull rod 35 and the second pull rod 36 to rotate and adjust, relative to the axial direction of the first pull rod 35 or the second pull rod 36, the first fixing seat 68 and the second fixing seat connected thereto may be driven to synchronously move in opposite directions or synchronously move away from each other, that is, the transmission box and the pulley assembly 02 may synchronously move in opposite directions or synchronously away from each other, thereby achieving fine adjustment of the transmission distance between the transmission box and the pulley assembly, especially between the driving pulley blocks in the push-pull type window.

As shown in fig. 6-7, in a preferred embodiment, the pulley assembly 02 includes a driving pulley block and a driven pulley block 48, wherein the driving pulley block includes a first roller 39, a first bracket 40, a second bracket 41, a second link 42 and a third link 43, the second link 42 and the third link 43 are spaced apart, first ends of the second link 42 and the third link 43 are respectively connected with the second bracket 41 through a pin, second ends of the second link 42 and the third link 43 are respectively connected with the first bracket 40 through a pin, the second links are parallel to the third link 43, the first roller 39 is connected with the first bracket 40, wherein the first roller 39 may be one more, such as 2, 3 or more, and is arranged along a length direction of the first bracket 40, i.e., the plurality of rollers 39 are provided to improve a bearing capacity of the pulley assembly. Furthermore, the hinge points of the second connecting rod 42 and the third connecting rod 43 on the first bracket 40 and the second bracket 41, and the hinge points of the second connecting rod 42 and the third connecting rod 43 on the first bracket 40 and the second bracket 41 together form a parallelogram, so that the first roller 39 connected to the first bracket 40 can be adjusted up and down relative to the fan body of the door leaf according to the motion characteristics of the quadrilateral mechanism (the relative rods are always parallel, and the angular displacement, the angular velocity and the angular acceleration of the two connecting rods are always equal); further, the sliding friction generated by the existence of the guide groove in the prior art is eliminated, namely, the rotating friction is generated only at the hinge point in the part of the pulley assembly, so that the resistance of the pulley assembly in action is reduced, and the rotating torque of the handle when the push-pull door window is opened is further reduced. Further, the third link 43 is further provided with a driving arm 44, a first end of the driving arm 44 is integrally formed with the third link 43, a second end of the driving arm 44 extends away from the third link 43, and the driving arm 44 is located at one end of the second bracket 41, and the driving arm 44 is used for driving the second bracket 41 and the first bracket 40 to move relatively with respect to a radial direction of the length axis of the first bracket 40 and the second bracket 41. Further, the length of the driving arm 44 is greater than that of the third connecting rod 43, so that a labor-saving lever is formed, and the driving moment of the pulley assembly 02 caused by the transmission box is reduced. The driving arm 44 is configured to drive the first bracket 40 to move relative to the second bracket 41, so that the first roller 39 is in a first state or a second state (in a retracted state or a lifted state relative to the sash of the door or window), and an included angle between the first bracket 40 and the second link 42 when the first roller 39 is in the first state is smaller than an included angle between the first bracket 40 and the second link 42 when the first roller 39 is in the first state. Specifically, the second link 42 and the third link 43 are respectively connected to the first bracket 40 and the second bracket 41 to form a parallelogram, and synchronous movement of two opposite sides can be realized according to the nature of the parallelogram, and further, the arm of force of the driving arm 44 can be used as a labor-saving lever, so that a relatively small moment can be output from the transmission box to enable the driving pulley to be in a lifting state, and further, the lengths of the driving arm 44 and the third link 43 are maintained in a proper proportion by calculation, for example, the swing height of the driving arm is 13MM, and the first bracket 40 drives the first roller 39 to move by a distance of 5MM relative to the second bracket 41.

As shown in fig. 7, in a preferred embodiment, the device further includes a third bracket 45, a third pull rod 46 and a slide block 47, the third bracket 45 forms a 90-degree angle with the second bracket 41 and is fixed, the slide block 47 is slidably connected with the third bracket 45, one end of the third pull rod 46 is connected with the slide block 47, the other end of the third pull rod is connected with the second end of the driving force arm 44, and the slide block 47 is used for connecting the first pull rod 35 or the second pull rod 36. Specifically, the third support, the third pull rod 46 and the matching with the sliding block 47 can facilitate the installation of the driving pulley block in the fan body, and the 90-degree angle formed by the third support 45 and the second support 41 can facilitate the accurate positioning of the driving pulley block at the corner of the fan body, or ensure the free swinging amount of the tail end of the driving arm 44. Furthermore, a seventh guide post 55 is further arranged on the sliding block 47, the seventh guide post 55 and the sliding block 47 are fixed by riveting or bolts, an eighth guide groove 56 matched with the seventh guide post 55 is formed in the third support 45, and the seventh guide post 55 is arranged in the eighth guide groove 56; specifically, the engagement of the seventh guide post 55 and the eighth guide groove 56 guides the movement direction of the slider 47 relative to the third bracket 45, that is, moves the slider 47 relative to the axial direction of the third bracket 45.

As shown in fig. 6-7, in the preferred embodiment, the hinge point of the third pull rod 46 and the driving arm 44, and the hinge point of the second link 42 or the third link 43 and the first bracket 40 and the second bracket 41 form a triangle together; when the first roller 39 is in the first state (the retracted state), the hinge point of the second link 42 or the third link 43 with the first bracket 40, and the hinge point of the third link 43 with the driving arm 44 are lower than the hinge point of the second link 42 or the third link 43 with the second bracket 41; specifically, when the hinge point between the third pull rod 46 and the driving force arm 44 is lowered, the amount of swing of the driving force arm 44 can be reduced compared to the case where the driving force arm 44 and the second link 42 or the third link 43 form a straight line, so that the structure of the pulley assembly can be relatively more compact.

As shown in fig. 6-7, in the preferred embodiment, the first bracket 40 and the second bracket 41 are both bent into a U shape, and a first accommodating cavity 57 and a second accommodating cavity 58 are respectively arranged in the first bracket 40 and the second bracket 41; the first roller is disposed in the first receiving cavity 57 of the first bracket 40, and the first bracket 40 is disposed in the second receiving cavity 58 of the second bracket 41. Further, a first receiving groove 60 is further formed at one side of the first bracket 40 in the width direction, when the first roller 39 is in the first state (the contracted state), a hinge point of the second bracket 41 and the second link 42 or the third link 43 is disposed in the first receiving groove 60, and when the first roller 39 is in the second state (the lifted state), the hinge point of the second bracket 41 and the second link 42 or the third link 43 is separated from the first receiving groove 60. Specifically, the first bracket 40 and the second bracket 41 are nested together, so that the overall structure of the pulley assembly is relatively more compact, and the overall structural strength of the pulley assembly is relatively higher. Further, the support device further comprises a support gasket 59, one surface of the support gasket 59 is fixed on the first bracket 40 and/or the sliding block 47 in a clamping manner, the other surface of the support gasket 59 is abutted against the inner wall of the second bracket 41 and/or the third bracket 45 respectively, and the support gasket 59 can slide relative to the inner wall of the second bracket 41 and/or the third bracket 45; further, a supporting gasket 59 is also arranged between the housing 05 and the movable member 07, one surface of the supporting gasket 59 is fixedly clamped with the movable member 07, the other surface of the supporting gasket 59 abuts against the inner wall of the housing 05, and the supporting gasket 59 can slide relative to the housing 05. The supporting pad 59 in this embodiment may be made of teflon, and specifically, the supporting pad 59 serves to reduce friction between the first bracket 40 and the second bracket 41 and between the third bracket 45 and the slider 47, i.e., to reduce friction force increased by surface contact between the first bracket 40 and the second bracket 41; as another example, the support pad 59 may reduce frictional resistance as the moveable member 07 moves relative to the housing 05.

As shown in fig. 8-9, in a preferred embodiment, the pulley assembly 02 further includes a driven pulley block 48, the driven pulley block 48 is fixed with the fan body through a bolt, the driving pulley block and the driven pulley block 48 are arranged at intervals, and the driving pulley block is in transmission connection with the driven pulley block 48; when the driving pulley block cannot well support the fan body, and if the length of the driving pulley block cannot stably support the bottom of the fan body of the door and window, one or more driven pulley blocks 48 can be used to be matched with the driving pulley block to form effective support for the fan body; further, when the transmission box 01 controls the driving pulley block to be in a lifting state according to the action of the handle, the driven pulley block 48 is linked with the driving pulley block and is in the lifting state.

As shown in fig. 8-9, in a preferred embodiment, the driven pulley block 48 comprises a fourth bracket 49, a fifth bracket 50, a second roller 51 and a fourth link 52, one end of the fourth link 52 is hinged to the fourth bracket 49, the other end of the fourth link 52 is hinged to the fifth bracket 50, and the second roller 51 is connected to the fifth bracket 50; the fifth bracket 50 is configured to receive an external force and drive the second roller 51 to move relative to the fourth bracket 49, so that the second roller 51 is in a first state (a retracted state) or a second state (a lifted state), and an included angle between the fourth bracket 49 and the fourth link 52 when the second roller 51 is in the first state is smaller than an included angle between the fourth bracket 49 and the fourth link 52 when the second roller 51 is in the second state. Further, in an embodiment, two second rollers 51 are disposed and spaced apart from each other in a length direction of the fifth bracket 50, only one fourth connecting rod 52 is used, the fourth connecting rod 52 is located between the second rollers 51, when the fifth bracket 50 moves relative to the fourth bracket 49 (the fourth bracket 49 is fixed on the sash body) under the driving of the driving pulley block, at this time, the fourth connecting rod 52 hinged between the fourth bracket 49 and the fifth bracket 50 and disposed obliquely forms a support so that the second rollers 51 form a support relative to the sash body of the door or window, and the sash body of the door or window can move flexibly. Of course, the number of the second rollers 51 may be more than 3, 4, 5 according to the requirement, so that the driven pulley 48 can bear the weight load of the heavy door and window sash, and when the number of the second rollers 51 is more than 3, the connection points of the second rollers 51 and the fifth bracket 50 are located on the same straight line, and the straight line is parallel to the length axis of the fifth bracket 50.

Further, in another embodiment, two fourth connecting rods 52 are provided, and in this case, in order to reduce the biasing moment applied to the driven pulley block 48, the second roller 51 is located between the two fourth connecting rods 52; further, when the hinge point of the fourth bracket 49 and the fourth link 52, the hinge point of the fifth bracket 50 and the fourth link 52 together form a parallelogram, so that the second roller 51 can be adjusted to be lifted and lowered relative to the sash of the door or window according to the motion characteristics of the quadrilateral mechanism (the relative rods are always kept parallel and the angular displacement, angular velocity and angular acceleration of the two links are always equal), that is, the parallel motion of the fifth bracket 50 relative to the fourth bracket 49; of course, if more than 2 second rollers 51 are provided, two fourth links 52 may be disposed between the two second rollers 51, or the second rollers 51 and the fourth links 52 may be disposed alternately. Specifically, when the driven pulley block 48 is in the lifted state, the driving pulley block drives the fifth bracket 50 to shift relative to the fourth bracket 49, the fourth link 52 connecting the fifth bracket 50 and the fourth bracket 49 rotates relative to the fifth bracket 50 and the fourth bracket 49, respectively, and the telescopic state, i.e., the lifted state or the contracted state, of the second roller 51 relative to the fourth bracket 49 is realized through the size of the deflection angle of the axis of the fourth link 52. Further, the driving pulley block and the driven pulley block 48 are fixed at the bottom of the fan body, the driving pulley block and the driven pulley block 48 are arranged at intervals, when the transmission box 01 controls the driving pulley block to be in a lifting state according to the action of the handle, the driven pulley block 48 is linked with the driving pulley block and is in the lifting state, namely the driving pulley block and the driven pulley block 48 realize synchronous action under the driving of the transmission box.

As shown in fig. 8-9, in the preferred embodiment, the fourth bracket 49 and the fifth bracket 50 are both U-shaped, wherein a third accommodating cavity 61 is formed in the fourth bracket 49, a fourth accommodating cavity 62 is formed in the fifth bracket 50, the second roller 51 is located in the fourth accommodating cavity 62, and the fifth bracket 50 is located in the third accommodating cavity 61. Nesting the fifth bracket 50 in the fourth bracket 49 can make the structure of the driven pulley relatively more compact on one hand, and can also make the overall structural strength of the driven pulley 48 relatively higher on the other hand. Further, a second receiving groove 63 is further formed in one side of the fifth bracket 50 in the width direction, when the second roller 51 is in the first state, a hinge point of the fourth connecting rod and the fourth bracket is disposed in the second receiving groove 63, and when the second roller 51 is in the second state, a hinge point of the fourth connecting rod 52 and the fourth bracket 49 is separated from the second receiving groove 63 or at least partially disposed outside the second receiving groove. The provision of the second receiving groove 63 makes it possible to make the volume of the set of driven pulleys 48 in the contracted state relatively more compact.

As shown in fig. 8-9, in a preferred embodiment, a supporting pad 59 is further disposed between the fourth bracket 49 and the fifth bracket 50, one surface of the supporting pad 59 is fixed to the fifth bracket 50 by clamping, and the other surface of the supporting pad 59 is abutted against the fourth bracket 49 and can slide relative to the fourth bracket 49. The support pad 59 in this embodiment may be teflon, and in particular, the support pad 59 between the fourth bracket 49 and the fifth bracket 50 may reduce friction when the fifth bracket 50 moves relative to the fourth bracket 49.

As shown in fig. 8-9, in a preferred embodiment, a reinforcing rib 64 is further disposed on the fifth bracket 50 relative to the length direction of the fifth bracket 50, the reinforcing rib 64 in this embodiment is formed by stamping, and the reinforcing rib 64 can further enhance the structural rigidity of the fifth bracket 50 and improve the deformation resistance of the driven pulley block under stress. Further, first plugs 65 are further arranged at two ends of the fourth support 49, the first plugs are placed in the third accommodating cavity 61, and the first plugs 65 and the fourth support 49 are fixed through riveting or bolts. A second plug 66 is further disposed at one end or two ends of the fifth support 50, the second plug 66 is disposed in the fourth accommodating cavity 62, and the second plug 66 and the fifth support 50 are fixed by bolts or riveting. The first plug 65 and the second plug 66 can further improve the structural rigidity of the driven pulley block.

Compared with the prior art, the invention has the following beneficial effects: through set up the regulating part on the transmission box, namely, realize finely tuning the transmission distance between transmission box and the loose pulley assembly through the regulating part in plug-type door and window, and then make the transmission box to loose pulley assembly's control accuracy or to door and window's control accuracy can reach corresponding demand, further, remedied because the length precision of transfer line and the door and window assemble the stack of comprehensive factors such as the whole precision and make the transmission box to loose pulley assembly's control (like the lifting height) or the door and window control state's of batch assembly production uniformity can not reach this technical problem that corresponding will, thereby the convenience of plug-type use of transmission box or door and window has been improved.

In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, reference to the description of the terms "preferred embodiment," "yet another embodiment," "other embodiments," or "specific examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. A kind of drive box, its characteristic is: including casing, drive assembly and moving part, the moving part with casing sliding connection, drive assembly with the casing rotates to be connected, drive assembly with the moving part transmission is connected, drive assembly is used for the drive the moving part for the casing removes, the one end or both ends department of moving part are provided with connecting portion, be provided with the regulating part on the connecting portion, the regulating part is used for connecting external equipment, the length of regulating part is adjustable, in order to adjust distance between transmission box and the external equipment.

2. The drive cassette of claim 1, wherein: the adjusting part comprises a first pull rod, a second pull rod and a connecting piece, a positive thread is arranged on the first pull rod, a negative thread is arranged on the second pull rod, one end of the first pull rod and one end of the second pull rod are connected with the connecting piece in a threaded mode, the other end of the first pull rod and the other end of the second pull rod are connected with the connecting portion and external equipment respectively, and the first pull rod and the second pull rod rotate when the connecting piece is connected, the distance between the first pull rod and the second pull rod is increased or decreased.

3. The drive cassette of claim 2, wherein: the movable part is characterized by further comprising a first fixing seat and a second fixing seat, wherein a forward thread is arranged on the first fixing seat, a backward thread is arranged on the second fixing seat, the first fixing seat is screwed with the first pull rod, the second fixing seat is screwed with the second pull rod, the first fixing seat is fixedly connected with the movable part, and the second fixing seat is connected with external equipment.

4. The drive cassette of claim 1, wherein: the adjusting part comprises a first pull rod and a connecting part, a first end of the first pull rod is provided with a forward-rotation thread, a second end of the first pull rod is provided with a reverse-rotation thread, and the connecting part is sleeved and fixed on the first pull rod.

5. The drive cassette of claim 4, wherein: still including first fixing base and second fixing base, be provided with the positive screw thread on the first fixing base, be provided with the derotation screw thread on the second fixing base, first fixing base is closed mutually with the first end of first pull rod mutually, the second fixing base with the second end of first pull rod is closed mutually, first fixing base with moving part fixed connection, the second fixing base links to each other with external equipment.

6. A drive cassette according to claim 3, wherein: the connecting piece with first pull rod or second pull rod are coaxial, the connecting piece is the polygon, and/or, be provided with a plurality of hole sites on the circumferential direction of connecting piece, the hole site for the radial direction setting of connecting piece.

7. A gearbox according to any one of claims 1 to 6, wherein: the movable piece locking device comprises a shell, and is characterized by further comprising a triggering mechanism, wherein the triggering mechanism is connected with the shell and is in transmission connection with the movable piece, the triggering mechanism enables the movable piece to be in a locking state relative to the shell under a state of waiting to be triggered, and the locking state of the movable piece relative to the shell is released after the triggering mechanism is triggered.

8. The drive cassette of claim 7, wherein: the trigger mechanism comprises a trigger block, an elastic piece, a first guide post, a first guide groove and a second guide groove, wherein the first guide groove and the second guide groove form an included angle, the first guide groove is communicated with one end of the second guide groove, the trigger block is in sliding connection with the movable piece and/or the shell, the first guide post is fixedly connected with the trigger block, the first guide post is arranged in the first guide groove or the second guide groove and can slide along the first guide groove or the second guide groove, one end of the elastic piece is abutted against the shell, and the other end of the elastic piece is abutted against the trigger block;

when the trigger mechanism is in a state to be triggered, the elastic piece pushes the trigger block out of the shell, and the first guide column slides into the first guide groove;

when the trigger mechanism is in a non-trigger state, the trigger block is contracted into the shell, and the first guide column slides into the second guide groove.

9. The drive cassette of claim 8, wherein: the trigger block is further provided with a second guide post, the shell is further provided with a third guide groove, the second guide post is fixedly connected with the trigger block, the second guide post is arranged in the third guide groove and can slide relative to the third guide groove, and the third guide groove is parallel to the first guide groove.

10. A push-pull door and window is characterized in that: the transmission box comprises a pulley assembly and the transmission box according to any one of claims 1 to 9, wherein the transmission box is used for being connected with a handle, the handle is used for driving the transmission box to move, the transmission box is in transmission connection with the pulley assembly, the transmission box controls the pulley assembly to lift or fall according to the movement of the handle, the adjusting piece is connected with the pulley assembly, the movable piece is in transmission with the pulley assembly through the adjusting piece, and the adjusting piece can adjust the distance between the transmission box and the pulley assembly.

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