CN217897538U - Transmission box - Google Patents

Abstract

The invention provides a transmission box which comprises a shell, a driving assembly, a movable member and a trigger mechanism, wherein the movable member is connected with the shell in a sliding manner, the driving assembly is connected with the shell in a rotating manner, the driving assembly is connected with the movable member in a transmission manner, the trigger mechanism is connected with the shell and is connected with the movable member in a transmission manner, the driving assembly is used for driving the movable member to move along the length direction of the shell, so that the trigger mechanism is in a state to be triggered and the movable member is in a locking state relative to the shell, and the locking state of the movable member relative to the shell is released after the trigger mechanism is triggered; the transmission box and the push-pull door and window have the advantages of reasonable structure and convenience in use.

Description

Transmission box

Technical Field

The invention belongs to the technical field of hardware and particularly relates to a transmission box.

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 fixing or positioning of the sliding door 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, 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 chute, the door and window body forms static friction with the rail, and further the door and window forms fixing, namely positioning, in the outer frame or on the rail, for example, the push-pull type hardware of the European standard C notch lift door and window disclosed in the patent application number of 201720561394.7; however, when door and window is closing the in-process, especially heavy push-pull door and window that inertia volume is great relatively is closing the in-process at it, because the lift opportunity of unable accurate control assembly pulley, perhaps, unable accurate control door and window's removal speed to often can make the frame that moves the door and window body form the collision and then take place to kick-back with the frame, promptly, be not convenient for move smooth closing of door and window, and then make push-pull door and window among the prior art produce as above inconvenient problem of use.

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:

a transmission box comprises a shell, a driving assembly, a moving part and a triggering mechanism, wherein the moving part is connected with the shell in a sliding mode, the driving assembly is connected with the shell in a rotating mode, the driving assembly is connected with the moving part in a transmission mode, the triggering mechanism is connected with the shell and connected with the moving part in a transmission mode, the driving assembly is used for driving the moving part to move in the vertical direction of the shell, the moving part drives the triggering mechanism to be in a locking state when the moving part moves upwards relative to the shell, so that the moving part is locked relative to the shell, when the triggering mechanism is triggered under the action of external force, the triggering mechanism releases the locking state of the moving part relative to the shell, and the moving part moves downwards relative to the shell and resets.

As a further improvement of the transmission box, the trigger mechanism includes a trigger block, the movable member is movably connected to the trigger block, and when the driving assembly drives the movable member to move upward to a preset position relative to the housing and the trigger block, the trigger block moves outward relative to the movable member and the housing, extends out of the housing, and supports the movable member;

when the trigger block is triggered by external force, the trigger block translates inwards relative to the movable piece and the shell and retracts into the shell, and when the trigger block retracts to a preset position, the movable piece moves downwards relative to the shell and the trigger block under the action of gravity and resets.

As a further improvement of the transmission box, the transmission box further includes a lock tongue body, the lock tongue body is installed in the housing, the lock tongue body is movably connected with the movable member and the housing, when the movable member is driven by the driving assembly to move upward relative to the housing and the trigger block, the movable member drives the lock tongue body to retract inward into the housing, when the trigger block is triggered by external force to retract to a preset position, the movable member moves downward relative to the housing and the trigger block under the action of gravity, and simultaneously drives the lock tongue body to move outward and extend out of the housing.

As a further improvement on the transmission box, the trigger mechanism further includes 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 contracted into the shell, and the first guide column slides into the second guide groove.

As a further improvement of the transmission box, the longitudinal axis of the first guide groove is parallel to the longitudinal axis of the trigger block, and the longitudinal axis of the second guide groove is parallel to the longitudinal axis of the movable member or the housing.

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.

As a further improvement of the transmission box, the transmission box further comprises a third guide post, a fourth guide groove and a fifth guide groove, wherein the lock tongue body is slidably connected with the movable member and/or the shell, the fourth guide groove is formed in the lock tongue body, the third guide post is fixedly connected with the movable member and is arranged in the fourth guide groove, the fifth guide groove is formed in the shell, the fourth guide post is fixedly connected with the lock tongue body and is arranged in the fifth guide groove, the fifth guide groove is parallel to the first guide groove or the third guide groove, and the fourth guide groove is obliquely arranged relative to the axis of the lock tongue body in the length direction.

As a further improvement of the transmission box, the transmission box further comprises a support gasket, the support gasket is located between the shell and the movable piece, one surface of the support gasket is fixed with the movable piece, the other surface of the support gasket is abutted against the inner wall of the shell, and the support gasket can slide relative to the shell.

As a further improvement of the transmission box, the transmission box further comprises a locking mechanism, the locking mechanism comprises a stop piece, a fifth guide post, a sixth guide groove and a lock cylinder mounting position arranged on the shell, the stop piece is slidably connected with the shell, the sixth guide groove is formed in the shell, the fifth guide post is fixedly connected with the stop piece, the fifth guide post is arranged in the sixth guide groove and can move relative to the sixth guide groove, the movable piece is provided with a limiting groove mutually matched with the stop piece, and the lock cylinder mounting position is used for mounting a lock cylinder for driving the stop piece to move;

when the locking mechanism is in a locking state, the stop piece moves into the limit groove along the sixth guide groove, and when the locking mechanism is in an unlocking state, the stop piece is far away from the limit groove.

Compared with the prior art, the invention has the following beneficial effects: through set up trigger mechanism on the transmission box, further with the transmission box install on the fan body of door and window and at the in-process of closing door and window, the edge of the door and window fan body touches each other and then forms the extrusion to trigger mechanism with the edge of frame, namely, start trigger mechanism, can remove the lifting state to pulley block for the door and window fan body after trigger mechanism starts, and then make the fan body of door and window and frame or say and form the stiction with the track that sets up in the frame, namely, avoided the fan body of door and window to make the fan body kick-back for the edge of frame emergence because of the striking with the frame, and then improved the convenience that transmission box and plug-type door and window used.

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 of 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 may be fabricated on a building (e.g., a wall), and in this case, the track for the fan to move may be 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. Handle, transmission box 01 and loose pulley assembly 02 all install on the fan body, and the handle is connected with transmission box 01 transmission, and transmission box 01 is connected with loose pulley assembly 02 transmission, and the handle passes through the transmission shaft, drives transmission box 01 and moves if square shaft, and transmission box 01 then controls and makes loose pulley assembly 02 be in the lifting state according to the action of handle, and the loose pulley assembly 02 forms the support to the fan body under the lifting state.

Specifically, the pulley assembly 02 in this embodiment is installed at the bottom of the fan body, and the pulley in the pulley assembly 02 in the lifted state extends or protrudes relative to the fan body to support the fan body, and at this time, the pulley assembly converts static friction between the fan body and the outer frame or between the fan body and the track of the outer frame into rolling friction, so that the fan body can flexibly move left and right along the outer frame or the track located in the outer frame, that is, the fan body can freely move along the length direction of the outer frame to realize opening or half-closing of the 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 in the frame or the fan body then can directly fall into on the track in the frame, and then makes fan body and frame form the static friction to 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 kick-backing 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 member 07, the movable member 07 is installed in the housing 05, and the movable member 07 is slidably connected with the housing 05, that is, the movable member 07 is movable relative to the housing 05, the driving assembly 06 is rotatably connected with the housing 05, the driving assembly 06 is in transmission connection with the movable member 07, the driving assembly 06 is used for receiving an external torque force and driving the movable member 07 to move relative to the housing 05, the driving assembly 06 is used for connecting a handle, and the driving assembly 06 can be operated by rotating the handle of the handle; further, the input end of the driving assembly 06 rotates from the first angle position to the second angle position relative to the casing 05, and after the external torque force is removed, that is, after the torque force acting on the handle is removed, the input end of the driving assembly 06 automatically resets from the second angle position to the first angle position relative to the casing 05, the connecting portion 67 is arranged at one end or two ends of the moving member 07, and the connecting portion 67 is used for connecting and driving an external device to move.

Particularly, in door and window, the drive assembly 06 of transmission box is used for connecting the handle, namely, the handle through rotating the handle can drive the drive assembly 06 to do, for example, the handle of handle can drive the drive assembly 06 to rotate 90 degrees when rotating 90 degrees, and then the control to pulley assembly 02 is realized through 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 movable element 07, the triggering mechanism 03 is connected to the housing 05, and the triggering mechanism 03 is drivingly connected to the movable element 07, the driving element is configured to drive the movable element 07 to move in an up-and-down direction of the housing 05, when the driving element drives the movable element 07 to move upward relative to the housing 05, the movable element 07 drives the triggering mechanism 03 to be in a locking state, so that the movable element 07 is locked relative to the housing 05, when the triggering mechanism 03 is triggered by an external force, the triggering mechanism 03 releases the locking state of the movable element 07 relative to the housing 05, and the movable element 07 moves downward relative to the housing 05 and resets. The driving assembly 06 is used for driving the moving element 07 to move along the length direction of the housing 05, so that the triggering mechanism 03 is in a state to be triggered and the moving element 07 is in a locked state relative to the housing 05, and the locking state of the moving element 07 relative to the housing 05 can be released after the triggering mechanism 03 is triggered, so that the moving element 07 is matched with the triggering mechanism 03 and/or the latch bolt assembly 04, and finally the action execution of the transmission box is realized.

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; the movable piece 07 is movably connected with the trigger block 08, and when the driving component 06 drives the movable piece 07 to move upwards to a preset position relative to the shell 05 and the trigger block 08, the trigger block 08 moves outwards and translates relative to the movable piece 07 and the shell 05, extends out of the shell 05, and supports the movable piece 07; when the trigger block 08 is triggered by an external force, the trigger block 08 translates inwards relative to the movable element 07 and the shell 05 and retracts into the shell 05, and when the trigger block 08 retracts to a preset position, the movable element 07 moves downwards relative to the shell 05 and the trigger block 08 under the action of gravity and resets. 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, and the elastic element 09 in this embodiment is a spring.

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. Furthermore, a second guide column 13 is further arranged on the trigger block 08, a third guide groove 14 is further arranged on the housing 05, the second guide column 13 is fixedly connected with the trigger block 08, the second guide column 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 element 07 in the length direction, the sixth guide column 54 is placed in the seventh guide groove 53, the sixth guide column 54 is fixed with the housing 05 through riveting, the seventh guide groove 53 is parallel to the axis of the movable element 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 element 07 can reciprocate in the up-and-down direction relative to the housing 07, or the movable element 07 can reciprocate 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, the transmission is performed by the handle, that is, when the driving assembly 06 is driven to act, 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 not 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 (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 flat angle of 90 degrees, at this time, the first guide post can limit the movement of the moving member, that is, the lifting state of the pulley assembly 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, the lock body is arranged on the outer frame, and the lock body and the bolt assembly 04 are matched with each other to lock the fan body and the outer frame, that is, the lock body and the bolt assembly 04 form a fixed connection, so that a locking state between the fan body and the outer frame is realized. Particularly, in this embodiment, the transmission box still includes spring bolt body 15, spring bolt body 15 is installed in casing 05, spring bolt body 15 and moving part and casing 05 swing joint, when drive assembly 06 drive moving part was for casing 05 and trigger block upward movement, the moving part drove spring bolt body 15 and inwards withdraws in the casing 05, when triggering the block and triggering the withdrawal to preset the position by external force, the moving part moved downwards for casing 05 and trigger block under the action of gravity, drove spring bolt body 15 outwards simultaneously, stretch out outside the casing 05.

Further, the locking bolt assembly 04 further includes a third guide post 16, a fourth guide post 17, a fourth guide groove 18 and a fifth guide groove 19, the locking bolt body 15 is slidably connected with the movable element 07 and/or the housing 05, the fourth guide groove 18 is disposed on the locking bolt body 15, the third guide post 16 is fixedly connected with the movable element 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 with the locking 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 obliquely disposed relative to the axial line of the locking bolt body 15 in the length direction, for example, the fourth guide groove 18 forms an included angle of 40 degrees relative to the axial line of the locking bolt body 15 in the length direction; 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, in this embodiment, the retractable latch body 15 can further eliminate the swing of the sash, specifically, in the process of closing the door and window, especially, heavy doors and windows often swing elastically due to the collision between the sash and the outer frame, and especially, the middle of the longitudinal axis of the sash of the door and window is more obvious, and the transmission box is often installed in the middle of the sash, so that when the sash touches the outer frame, the trigger mechanism 03 releases the lifting state of the pulley assembly 02, and the latch assembly 04 is simultaneously activated, that is, the latch body 15 extends into the outer frame, thereby slowing down or eliminating the swing of the sash due to the collision with the outer 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 box 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 limiting block 24 is fixed to the base 20 and the driving shaft 21 is provided with the second limiting block 25, the rotation angle of the driving shaft 21 relative to the base 20 cannot exceed 360 degrees, and further, because the driven wheel 23 is provided with the third limiting block 26, when the driving shaft 21 rotates, the third limiting block is shifted by the second limiting 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 moved to and kept in 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 force acting on the handle is removed by the hand or when the torque force acting on the handle is smaller than the elastic torque force of the torsion spring 22, the driving shaft 21 is driven to rotate under the elastic torque force 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 abuts 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 the hinged point of the first connecting rod 27 and the driven wheel 23 is offset from the axial line of the driven wheel 23, that is, the eccentric driven wheel 23 and the first connecting rod 27 cooperate to drive the movable member 07 to reciprocate relative to the housing 05.

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, the movable member 07 is provided with a limit slot 34 that is engaged with the stop member 30, and the key cylinder mounting position 33 is used for mounting a key cylinder that drives the stop member 30 to move; when the locking mechanism is in the locked state, the stop member 30 moves along the sixth guide groove 32 into the limit groove 34, and when the locking mechanism is in the unlocked state, the stop member 30 is 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 to 5, in a preferred embodiment, the transmission case 01 further includes an adjusting member connected to one or both ends of the movable member 07, and the adjusting member is used to adjust a transmission distance between the transmission case 01 and the pulley assembly 02. 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.

Particularly, because to the door and window of different specifications, the transmission distance between transmission box and the loose pulley assembly 02 is inconsistent, consequently, accomplish transmission box and loose pulley assembly 02's the back of being connected when the regulating part, often still need come to finely tune the transmission distance between transmission box and the loose pulley assembly 02 through the regulating part to guarantee the reliable accuracy of opening or opening of door and window, like realize that door and window is opening and close the in-process, the precision of the handle pivoted angle of handle (if adjust the handle of handle and be in the horizontality). Further, in another embodiment, the adjusting member includes a first pull rod 35 and a connecting member 37, one end of the first pull rod 35 is provided with a forward-rotation thread, a second end of the first pull rod 35 is provided with a backward-rotation thread, and the connecting member 37 is detachably sleeved on and fixed to the first pull rod 35, that is, only one pull rod is used at this time, and the forward-rotation thread and the backward-rotation thread are respectively disposed at two ends of the pull rod. 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 hexagonal, and/or a plurality of holes 38 are disposed in a circumferential direction of the connecting member 37, and the holes 38 are disposed relative to a radial direction of the connecting member 37. Specifically, the connecting member 37 arranged in a polygonal shape may be capable of driving the first pull rod 35 and the second pull rod 36 to rotate by a wrench, or inserting 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, because the first pull rod 35 and the second pull rod 36 are respectively provided with the forward and reverse threads, when the connecting member 37 drives the first pull rod 35 and the second pull rod 36 to rotate and adjust, the transmission case and the pulley assembly 02 may move synchronously toward each other or away from each other, relative to the axial direction of the first pull rod 35 or the second pull rod 36.

As shown in fig. 6-7, in a preferred embodiment, the pulley assembly 02 includes a driving pulley assembly and a driven pulley assembly 48, wherein the driving pulley assembly 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 link and the third link 43 are parallel, 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, that is, the arrangement of the plurality of rollers 39 can increase a bearing capacity of the pulley assembly. Furthermore, the hinge points on the first bracket 40 and the second bracket 41 with the second link 42 and the third link 43, and the hinge points on the second link 42 and the third link 43 with the first bracket 40 and the second bracket 41 together enclose 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 links 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. Further, a seventh guide post 55 is further arranged on the slider 47, the seventh guide post 55 and the slider 47 are fixed by riveting or bolts, an eighth guide groove 56 matched with the seventh guide post 55 is formed in the third bracket 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 force 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 together form a triangle; 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 of the third link 46 and the driving arm 44 is lowered, the amount of swing of the driving arm 44 can be reduced relative to the case where the driving 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 the 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 can not well support the fan body, for example, the length of the driving pulley block can not stably support the bottom of the fan body of the door 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 provided and are 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, and when the fifth bracket 50 is driven by the driving pulley block to move relative to the fourth bracket 49 (the fourth bracket 49 is fixed on the sash body), at this time, the fourth connecting rod 52 hinged between the fourth bracket 49 and the fifth bracket 50 and disposed obliquely will form a support, so that the second rollers 51 form a support relative to the sash body of the door or window, and further 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, and 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 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 with respect to the length direction of the fifth bracket 50, and the reinforcing rib 64 in this embodiment is formed by stamping, so that the reinforcing rib 64 can further enhance the structural rigidity of the fifth bracket 50, and improve the deformation resistance of the driven pulley set 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 trigger mechanism on the transmission box, further with the transmission box install on the fan body of door and window and at the in-process of closing door and window, the edge of the door and window fan body touches each other and then forms the extrusion to trigger mechanism with the edge of frame, namely, start trigger mechanism, can remove the lifting state to pulley block for the door and window fan body after trigger mechanism starts, and then make the fan body of door and window and frame or say and form the stiction with the track that sets up in the frame, namely, avoided the fan body of door and window to make the fan body kick-back for the edge of frame emergence because of the striking with the frame, and then improved the convenience that transmission box and plug-type door and window used.

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 (9)

1. A kind of drive box, its characteristic is: including casing, drive assembly, moving part and trigger mechanism, 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, trigger mechanism with the casing is connected, just trigger mechanism with the moving part transmission is connected, drive assembly is used for driving the moving part edge the upper and lower direction of casing removes, drive assembly drive the moving part for during the casing upward movement, the moving part drives trigger mechanism is in the lock-out condition, makes the moving part for the casing locking, when trigger mechanism receives external force effect to be triggered, trigger mechanism removes the moving part for the lock-out condition of casing, the moving part for the casing downstream resets.

2. The drive cassette of claim 1, wherein: the trigger mechanism comprises a trigger block, the movable piece is movably connected with the trigger block, and when the driving component drives the movable piece to move upwards to a preset position relative to the shell and the trigger block, the trigger block moves outwards relative to the movable piece and the shell, extends out of the shell and supports the movable piece;

when the trigger block is triggered by external force, the trigger block translates inwards relative to the movable piece and the shell and retracts into the shell, and when the trigger block retracts to a preset position, the movable piece moves downwards relative to the shell and the trigger block under the action of gravity and resets.

3. The drive cassette of claim 2, wherein: the transmission box still includes the spring bolt body, the spring bolt body is installed in the casing, spring bolt body and moving part and casing swing joint, the drive assembly drive the moving part for during casing and the upward movement of trigger block, the moving part drives the spring bolt body inwards retracts in the casing, when trigger block receives external force to trigger the retraction to preset the position, the moving part is relative to casing and trigger block downstream under the action of gravity, drives simultaneously the spring bolt body outwards removes, stretches out outside the casing.

4. The drive cassette of claim 2, wherein: the trigger mechanism further comprises 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 are arranged on the movable piece, an included angle is formed between the first guide groove and the second guide groove, 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.

5. The drive cassette of claim 4, wherein: the axis of the first guide groove is parallel to the axis of the trigger block, and the axis of the second guide groove is parallel to the axis of the movable piece or the shell.

6. The drive cassette of claim 4, wherein: still be provided with the second guide post on the trigger block, still be provided with the third guide way on the casing, the second guide post with trigger block fixed connection, the second guide post is arranged in the third guide way and can for the third guide way slides, just the third guide way is parallel to each other with first guide way.

7. The drive cassette of claim 3, wherein: the spring bolt comprises a spring bolt body and is characterized by further comprising a third guide post, a fourth guide groove and a fifth guide groove, wherein the spring bolt body is in sliding connection with the moving part and/or the shell, the fourth guide groove is formed in the spring bolt body, the third guide post is fixedly connected with the moving part and arranged in the fourth guide groove, the fifth guide groove is formed in the shell, the fourth guide post is fixedly connected with the spring bolt body and arranged in the fifth guide groove, the fifth guide groove is parallel to the first guide groove or the third guide groove, and the fourth guide groove is obliquely arranged relative to the axis of the spring bolt body in the length direction.

8. A gearbox according to any one of claims 1 to 7, wherein: the movable part is characterized by further comprising a supporting gasket, the supporting gasket is located between the shell and the movable part, one surface of the supporting gasket is fixed with the movable part, the other surface of the supporting gasket is abutted to the inner wall of the shell, and the supporting gasket can slide relative to the shell.

9. A gearbox according to any one of claims 1 to 7, wherein: the transmission box further comprises a locking mechanism, the locking mechanism comprises a stop piece, a fifth guide post, a sixth guide groove and a lock cylinder mounting position arranged on the shell, the stop piece is connected with the shell in a sliding mode, the sixth guide groove is formed in the shell, the fifth guide post is fixedly connected with the stop piece, the fifth guide post is arranged in the sixth guide groove and can move relative to the sixth guide groove, a limiting groove matched with the stop piece is formed in the movable piece, and the lock cylinder mounting position is used for mounting a lock cylinder;

when the locking mechanism is in a locking state, the stop piece moves into the limit groove along the sixth guide groove, and when the locking mechanism is in an unlocking state, the stop piece is far away from the limit groove.

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