First connecting structure, second connecting structure and transmission assembly

Abstract

This application proposes a first connecting structure, a second connecting structure, and a transmission assembly. The first connecting structure includes: a wheel for driving an external transmission assembly; a transmission shaft for insertion into a first transmission hole on the wheel; a connecting rod detachably inserted into a first through hole in the transmission shaft; a first limiting portion disposed at the end of the connecting rod; and a second limiting portion disposed on the outside of the transmission shaft. The outer contour of the second limiting portion is larger than the cross-sectional boundary of the first transmission hole; the outer contour of the first limiting portion extends beyond the cross-sectional boundary of the first through hole, and the outer contour of the first limiting portion has a first extended state extending beyond the end face boundary of the transmission shaft, and a second retracted state retracting within the end face boundary of the transmission shaft. The first limiting portion, in its first extended state, clamps the wheel with the second limiting portion. The technical solution provided by this application can more conveniently achieve the connection and fixation of the transmission shaft and the wheel.

Description

Technical Field

[0001] This application relates to the field of door and window transmission components technology, and in particular to a first connection structure between a transmission shaft and a rotating wheel; a second connection structure between a transmission shaft and a handle; and a transmission component. Background Technology

[0002] The drive housing and handle are essential hardware components for opening and closing doors and windows. A conventional solution involves a base on the handle, directly connected to the handle with screws; the base is connected to the drive housing with two screws, clamping the sash profile for fixation; the handle's rotation is transmitted via a drive shaft to a wheel in the drive housing, thus driving the drive housing. This conventional solution requires numerous parts, is relatively complex to install, and has high material and labor costs.

[0003] In the existing technology “CN202111118338.3-A handle device and its disassembly and assembly method”, the technical solution adopted is to fasten the drive shaft through the rotating wheel to the lower housing. This technical solution requires consideration of the installation of the drive shaft fasteners when installing the drive housing, which leads to a reduction in the efficiency of drive shaft installation.

[0004] Therefore, how to provide a first connection structure between the drive shaft and the wheel that can more conveniently realize the connection and fixation of the drive shaft and the wheel is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] To address the shortcomings of the prior art, the present invention aims to achieve a more convenient connection and fixation between the drive shaft and the rotating wheel. The present invention provides a first connection structure for a drive shaft and a rotating wheel, comprising: a rotating wheel for driving an external transmission component; a drive shaft inserted into a first transmission hole on the rotating wheel; a connecting rod detachably inserted into a first through hole in the drive shaft; a first limiting portion disposed at the end of the connecting rod; and a second limiting portion disposed on the outer side of the drive shaft. The outer contour of the second limiting portion is larger than the cross-sectional boundary of the first transmission hole; the outer contour of the first limiting portion extends beyond the cross-sectional boundary of the first through hole, having a first extended state extending beyond the end face boundary of the drive shaft, and a second retracted state retracting within the end face boundary of the drive shaft. The first limiting portion, in its first extended state, clamps the rotating wheel with the second limiting portion.

[0006] According to a first embodiment of the present invention, a first connection structure between a drive shaft and a rotating wheel is provided:

[0007] A first connection structure between a drive shaft and a rotating wheel includes: a rotating wheel for driving a transmission assembly; a drive shaft for insertion into a first transmission hole on the rotating wheel; a connecting rod detachably inserted into a first through hole in the drive shaft; a first limiting portion disposed at the end of the connecting rod; and a second limiting portion disposed on the outer side of the drive shaft. The outer contour of the second limiting portion is larger than the cross-sectional boundary of the first transmission hole; the outer contour of the first limiting portion extends beyond the cross-sectional boundary of the first through hole, and the outer contour of the first limiting portion has a first extended state extending beyond the end face boundary of the drive shaft, and a second converged state converged within the end face boundary of the drive shaft. The first limiting portion clamps the rotating wheel with the second limiting portion in the first extended state.

[0008] Furthermore, in a more preferred embodiment of the present invention, the first limiting part is a block or plate structure with a polygonal outline; the transmission shaft is a polygonal prism.

[0009] Preferably, the outer contour of the first limiting part is one or more of the following: triangle, star, rhombus, and square.

[0010] Preferably, the outer contour of the first limiting part is square.

[0011] Furthermore, as a more preferred embodiment of the present invention, the transmission shaft is in the shape of a polygonal prism; preferably, the transmission shaft is in the shape of a regular square prism.

[0012] Furthermore, as a more preferred embodiment of the present invention, the outer edge of the end face of the first limiting part facing the drive shaft is provided with a sloped transition structure, and the end face of the first limiting part facing the drive shaft transitions from a plane to a slope from the middle to the outside.

[0013] Furthermore, in a more preferred embodiment of the present invention, the end face of the first limiting portion facing the drive shaft is used to abut against the end face of the rotating wheel.

[0014] Furthermore, as a more preferred embodiment of the present invention, a receiving groove is provided on the side wall of the first transmission hole for receiving the extended portion of the first limiting part in the first extended state.

[0015] Furthermore, as a more preferred embodiment of the present invention, the connecting rod is detachably disposed in the first through hole of the transmission shaft via a retaining ring structure; the retaining ring structure includes: a retaining groove disposed on the connecting rod and located away from the first limiting part at one end; and a retaining ring for engaging in the retaining groove, the retaining ring being used to abut against the end face of the transmission shaft away from the first limiting part.

[0016] Furthermore, in a more preferred embodiment of the present invention, the connecting rod is detachably disposed in the first through hole of the transmission shaft via a pin structure; the pin structure includes: a first pin hole disposed on the connecting rod; a second pin hole disposed on the transmission shaft, the second pin hole being used to communicate with the first pin hole; and a pin shaft for being simultaneously inserted into the first pin hole and the second pin hole.

[0017] Furthermore, as a more preferred embodiment of the present invention, an end drive portion is provided at one end of the connecting rod away from the first limiting portion; the end drive portion has a groove-shaped structure; the end drive portion is used to be embedded and fixedly engaged with the third limiting portion on the external handle.

[0018] Furthermore, as a more preferred embodiment of the present invention, the first connecting structure further includes: a recess provided on the outer wall of the rotating wheel, the recess being arranged in a circular array along the outer wall of the rotating wheel; and a ball assembly provided on one side of the rotating wheel, the ball assembly elastically abutting against the recess.

[0019] Furthermore, as a more preferred embodiment of the present invention, the first connecting structure further includes: an annular track disposed on the outer wall of the rotating wheel for connecting the various recesses.

[0020] Furthermore, as a more preferred embodiment of the present invention, the marble assembly includes: a spring box, a spring, and a marble; the spring and the marble are disposed within the receiving cavity of the spring box; the marble is used to abut against the recess.

[0021] According to a second embodiment of the present invention, a second connection structure between the drive shaft and the handle is provided:

[0022] A second connection structure between a drive shaft and a handle, the second connection structure comprising: the aforementioned first connection structure between the drive shaft and the wheel; a handle, wherein a second drive hole of the handle is sleeved on the end of the drive shaft away from the wheel; a third threaded structure, wherein the third threaded structure is disposed on the handle; and a second bolt structure, wherein the second bolt structure is used to thread-mate with the third threaded structure, and one end of the second bolt structure is used to abut against the outer wall of the drive shaft.

[0023] Furthermore, as a more preferred embodiment of the present invention, the second connection structure further includes: a third limiting part disposed at the bottom of the second transmission hole for embedding the end drive part.

[0024] According to a third embodiment of the present invention, a transmission assembly is provided:

[0025] A transmission assembly, the device comprising: the first connection structure between the aforementioned transmission shaft and the rotating wheel.

[0026] Compared with the prior art, the technical solution provided in this application, after successfully assembling the connecting rod and the drive shaft, inserts one end of the drive shaft containing the first limiting part into the first transmission hole until the second limiting part abuts against one end face of the rotating wheel; simply rotating the connecting rod switches the first limiting part from the second retracted state to the first extended state, with the first limiting part abutting against the other end face of the rotating wheel. This achieves a detachable and fixed connection between the drive shaft and the rotating wheel. The technical solution provided in this application can more conveniently achieve the connection and fixation of the drive shaft and the rotating wheel. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the first connection structure between the drive shaft and the wheel in an embodiment of the present application, with the first limiting part in a second retracted state.

[0028] Figure 2 This is a schematic diagram of the overall structure of the first connection structure between the drive shaft and the wheel in an embodiment of the present application, with the first limiting part in a first extended state.

[0029] Figure 3 The following is a schematic diagram of an embodiment of the present application: In the first embodiment, the first limiting part of the first connecting structure is in a first extended state.

[0030] Figure 4 The following is a schematic diagram of an embodiment of the present application: In the first embodiment, the first limiting part of the first connecting structure is in a second retracted state.

[0031] Figure 5 The following is a schematic diagram of an embodiment of the present application: In the second embodiment, the first limiting part of the first connecting structure is in a first extended state and located in the receiving groove.

[0032] Figure 6 The following is a schematic diagram of an embodiment of the present application: In the second embodiment, the first limiting part of the first connecting structure is in a second retracted state and located in the receiving groove.

[0033] Figure 7 This is a structural schematic diagram of the connecting rod in an embodiment of the present application.

[0034] Figure 8 This is an exploded view of the connecting rod being connected to the drive shaft via a snap ring structure in an embodiment of the present application.

[0035] Figure 9 This is a schematic diagram of the first structure in an embodiment of the present application where the connecting rod is connected to the drive shaft via a pin structure;

[0036] Figure 10This is a schematic diagram of the second structure in an embodiment of the present application where the connecting rod is connected to the drive shaft via a pin structure;

[0037] Figure 11 This is a schematic diagram of the structure of the marble assembly contacting the rotating wheel in an embodiment of the present application;

[0038] Figure 12 An embodiment of the present application: a schematic diagram of the internal structure of the handle in the second connection structure;

[0039] Figure 13 This is an embodiment of the solution in this application; a schematic diagram of the internal structure of the connection between the handle and the drive shaft in the second connection structure;

[0040] Figure 14 This is a schematic diagram of the detachable and fixed connection between the handle and the drive shaft in the second connection structure of the embodiment of the present application.

[0041] Figure 15 This is a schematic diagram of the transmission shaft structure in an embodiment of the present application.

[0042] Figure 16 This is a schematic diagram of the rotary wheel structure in an embodiment of the present application.

[0043] Figure 17 This is a schematic diagram of the first connecting structure being installed on the transmission assembly in an embodiment of the present application.

[0044] Figure label:

[0045] Drive shaft 1; First through hole 101; Rotating wheel 2; First transmission hole 201; Receiving groove 201a; Recess 202; Annular track 203; Connecting rod 3; End drive part 301; First limiting part 401; Inclined transition structure 401a; Second limiting part 402; Snap ring structure 501; Snap groove 501a; Snap ring 501b; First pin hole 502a; Second pin hole 502b; Pin 502c; Ball assembly 601; Spring box 601a; Spring 601b; Ball 601c;

[0046] Third limiting part A202a; handle A1; second transmission hole A202; third thread structure A301; second bolt structure A4. Detailed Implementation

[0047] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0049] It is important to understand that the terms "length," "width," "up," "down," "front," "back," "left," "right," and "vertical" are used interchangeably.

[0050] The orientation or positional relationship indicated by terms such as "horizontal", "top", "bottom", "inner", and "outer" is based on the orientation or positional relationship shown in the accompanying drawings and is only for the purpose of facilitating the description of this application and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0052] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0053] According to a first embodiment of the present invention, a first connection structure between a drive shaft and a rotating wheel is provided:

[0054] A first connection structure between a drive shaft and a rotating wheel, the first connection structure comprising: a rotating wheel 2 for driving a transmission assembly; a drive shaft 1 for being inserted into a first transmission hole 201 on the rotating wheel 2; a connecting rod 3 detachably passing through a first through hole 101 in the drive shaft 1; a first limiting part 401 disposed at the end of the connecting rod 3; and a second limiting part 402 disposed on the outside of the drive shaft 1.

[0055] The outer contour of the second limiting part 402 is larger than the cross-sectional boundary of the first transmission hole 201; the outer contour of the first limiting part 401 extends beyond the cross-sectional boundary of the first through hole 101; the outer contour of the first limiting part 401 has a first extended state extending beyond the end face boundary of the transmission shaft 1; the outer contour of the first limiting part 401 has a second retracted state retracted within the end face boundary of the transmission shaft 1; the first limiting part 401 clamps the rotating wheel 2 with the second limiting part 402 in the first extended state.

[0056] This application provides a technical solution for a first connection structure between a drive shaft and a rotating wheel. In this technical solution, after the connecting rod 3 and the drive shaft 1 are successfully combined, one end of the drive shaft 1, where the first limiting part 401 is located, is inserted into the first transmission hole 201 until the second limiting part 402 abuts against one end face of the rotating wheel 2. Simply rotating the connecting rod 3 switches the first limiting part 401 from a second retracted state to a first extended state, where the first limiting part 401 abuts against the other end face of the rotating wheel 2. This achieves a detachable and fixed connection between the drive shaft and the rotating wheel. The technical solution provided by this application can more conveniently achieve the connection and fixation of the drive shaft and the rotating wheel.

[0057] It should be noted that this solution only requires rotating the connecting rod less than 45 degrees to achieve a quick switch of the first limiting part state, thus truly realizing rapid installation.

[0058] It should be noted that, in the first extended state, the corner of the first limiting part extends out of the end interface boundary of the drive shaft by rotation.

[0059] It should be noted that the outer contour of the second limiting part 402 is larger than the cross-sectional boundary of the first transmission hole 201, that is, the second limiting part cannot pass through the first transmission hole 201; the outer contour of the first limiting part 401 exceeds the cross-sectional boundary of the first through hole 101, that is, the first limiting part 401 cannot pass through the first through hole; the outer contour of the first limiting part 401 has a second contracted state that is contracted within the boundary of the end face of the transmission shaft 1, that is, the first limiting part can pass through the first transmission hole 201 in the second contracted state; the outer contour of the first limiting part 401 has a first extended state that extends beyond the boundary of the end face of the transmission shaft 1, that is, the first limiting part can extend beyond the boundary of the transmission shaft in the first extended state and cannot pass through the first transmission hole 201.

[0060] It should be noted that the method of use is as follows: adjust the first limiting part to the second retracted state; insert the end of the drive shaft with the first limiting part into the first drive hole; when the second limiting part abuts against the rotating wheel, rotate the connecting rod to adjust the first limiting part to the first extended state; at this time, under the combined action of the first limiting part and the second limiting part, the drive shaft and the rotating wheel are detachably connected.

[0061] Specifically, in this embodiment of the invention, the first limiting part 401 is a block or plate-shaped structure with a polygonal outline; the drive shaft 1 has a polygonal prism shape. Preferably, the outline of the first limiting part 401 is one or more of a triangle, star, rhombus, and square; more preferably, the outline of the first limiting part 401 is a square.

[0062] It should be noted that the outer contour of the first limiting part can be implemented in various structural designs depending on the shape of the rotating shaft. In the most preferred embodiment of this application, the outer contour of the first limiting part is square, that is, the first limiting part is a square plate, and the center of the square plate is fixedly connected to the main body of the connecting rod; furthermore, the first limiting part and the connecting rod are designed as an integral structure.

[0063] Specifically, in this embodiment of the invention, the transmission shaft 1 is shaped like a polygonal prism; preferably, the transmission shaft 1 is shaped like a regular square prism.

[0064] It should be noted that the preferred shape of the drive shaft is a polygonal prism. More specifically, the drive shaft can be a regular square prism, which is a common design for drive shafts in the current art.

[0065] In other embodiments of the drive shaft, the drive shaft may also be elliptical in shape or a polygonal prism with curved surfaces.

[0066] Specifically, in this embodiment of the invention, the first limiting part 401 is provided with a slope transition structure 401a on the outer edge of the end face of the transmission shaft 1. The end face of the first limiting part 401 facing the transmission shaft 1 transitions from a plane to a slope from the middle to the outside.

[0067] It should be noted that, relative to the overall thickness of the first limiting part, the thickness of the inclined transition structure gradually decreases. This means that the inclined transition structure is raised relative to the solid edge of the rotating wheel, allowing the first limiting part to ride on the solid edge of the rotating wheel when switching from the second retracted state to the first extended state. This ultimately achieves the technical effect of using the planar portion of the first limiting part to press against the rotating wheel structure. The inclined transition structure design prevents the first limiting part from being stuck by the solid edge of the rotating wheel, thus avoiding the inability to switch states.

[0068] Specifically, in this embodiment of the invention, the end face of the first limiting part 401 facing the transmission shaft 1 is used to abut against the end face of the rotating wheel 2.

[0069] Specifically, in this embodiment of the invention, the side wall of the first transmission hole 201 is provided with a receiving groove 201a for receiving the extended portion of the first limiting part 401 in the first extended state.

[0070] It should be noted that in the first connection embodiment, the first limiting part and the second limiting part achieve a detachable and fixed connection between the drive shaft and the drive wheel by clamping them on the two end faces of the drive wheel. In the second connection embodiment, the first limiting part does not pass through the entire first transmission hole, but a receiving groove 201a is designed in the middle inner wall of the first transmission hole to accommodate the protruding corner of the first limiting part; together with the second limiting part, a detachable and fixed connection between the drive shaft and the drive wheel is also achieved.

[0071] Specifically, in this embodiment of the invention, the connecting rod 3 is detachably disposed in the first through hole 101 of the transmission shaft 1 via a retaining ring structure 501. The retaining ring structure 501 includes: a retaining groove 501a disposed on the connecting rod 3 and located away from the first limiting part 401; and a retaining ring 501b for engaging in the retaining groove 501a, the retaining ring 501b being used to abut against the end face of the transmission shaft 1 away from the first limiting part 401.

[0072] It should be noted that in the first embodiment where the connecting rod and the drive shaft are detachably connected, the retaining ring 501b cooperates with the first limiting part 401 to detachably clamp the connecting rod 3 onto the drive shaft 1, thereby achieving axial fixation between the connecting rod and the drive shaft. The detachable and fixed installation of the connecting rod and the drive shaft is achieved through the cooperation of the retaining ring 501b and the first limiting part 401.

[0073] It should be further explained that the first limiting part cannot pass through the first through hole 101 in either the first extended state or the second retracted state. Therefore, the connecting rod and the drive shaft can remain in their installed state in both the first extended state and the second retracted state. After removing the retaining ring, the connecting rod and the drive shaft can be disassembled.

[0074] It should be noted that the third limiting part A202a cooperates with the handle to limit the relative rotation of the square shaft and the connecting rod.

[0075] Specifically, in this embodiment of the invention, the connecting rod 3 is detachably disposed in the first through hole 101 of the transmission shaft 1 via a pin structure; the pin structure includes: a first pin hole 502a disposed on the connecting rod 3; a second pin hole 502b disposed on the transmission shaft 1, the second pin hole 502b being used to communicate with the first pin hole 502a; and a pin 502c being used to be simultaneously inserted into the first pin hole 502a and the second pin hole 502b.

[0076] It should be noted that in the second embodiment where the connecting rod and the drive shaft are detachably connected, the axial and circumferential fixing of the connecting rod and the drive shaft is achieved directly through the cooperation of the pin and the first pin hole and the second pin hole, further improving the connection effect between the connecting rod and the drive shaft.

[0077] It should be noted that the pin structure directly restricts the relative rotation between the square shaft and the handle, thus improving the limiting effect.

[0078] Specifically, in this embodiment of the invention, an end drive portion 301 is provided at one end of the connecting rod 3 away from the first limiting portion 401; the end drive portion 301 has a groove-shaped structure; the end drive portion 301 is used to be embedded and fixedly engaged with the third limiting portion A202a on the external handle.

[0079] It should be noted that in one embodiment of the end drive unit, the groove structure is a straight groove structure, and the third limiting part is set on the handle. When the handle is driven, the drive shaft rotates with the handle, and the connecting rod rotates with the handle under the embedded cooperation of the third limiting part and the groove structure, thereby realizing the synchronous rotation of the connecting rod and the drive shaft, thus ensuring that the first limiting part is always in the first extended state.

[0080] Specifically, in this embodiment of the invention, the first connecting structure further includes: a recess 202 disposed on the outer wall of the rotating wheel 2, the recess 202 being arranged in a circular array along the outer wall of the rotating wheel 2; and a ball assembly 601 disposed on one side of the rotating wheel 2, the ball assembly 601 elastically abutting against the recess 202.

[0081] It should be noted that when the rotating wheel 2 is in motion, the recesses will generate a tactile vibration and a mechanical friction sound due to the contact with the ball bearing assembly. Setting multiple recesses at a specified angle allows for tactile and auditory feedback during handle rotation, improving the user experience.

[0082] Specifically, in this embodiment of the invention, the first connecting structure further includes an annular track 203 disposed on the outer wall of the rotating wheel 2 for connecting the various recesses 202.

[0083] It should be noted that the circular track constrains the path of the ball on the outer wall of the wheel.

[0084] Specifically, in this embodiment of the invention, the marble assembly 601 includes: a spring box 601a, a spring 601b, and a marble 601c; the spring 601b and the marble 601c are disposed in the receiving cavity of the spring box 601a; the marble 601c is used to abut against the recess 202.

[0085] It should be noted that the ball extends and retracts within the spring box through the action of the spring, and then abuts against the outer wall of the rotating wheel.

[0086] According to a second embodiment of the present invention, a second connection structure between the drive shaft and the handle is provided:

[0087] A second connection structure between a drive shaft and a handle, the second connection structure comprising: the aforementioned first connection structure between the drive shaft and the rotating wheel; a handle A1, wherein a second drive hole A202 of the handle A1 is sleeved on the end of the drive shaft 1 away from the rotating wheel 2; a third threaded structure A301, wherein the third threaded structure A301 is disposed on the handle A1; and a second bolt structure A4, wherein the second bolt structure A4 is used to thread-mate with the third threaded structure A301, and one end of the second bolt structure A4 is used to abut against the outer wall of the drive shaft 1.

[0088] It should be noted that the handle and the drive shaft are detachably fixed by the combination of the second bolt structure and the third threaded structure.

[0089] Specifically, in this embodiment of the invention, the second connection structure further includes a third limiting part A202a disposed at the bottom of the second transmission hole A202 for embedding the end drive part 301.

[0090] It should be noted that, through the third limiting part, the handle drives the connecting rod to rotate synchronously when it rotates.

[0091] According to a third embodiment of the present invention, a transmission assembly is provided:

[0092] A transmission assembly, the device comprising: the first connection structure between the aforementioned transmission shaft and the rotating wheel.

[0093] Example 1

[0094] A first connection structure between a drive shaft and a rotating wheel, the first connection structure comprising: a rotating wheel 2 for driving a transmission assembly; a drive shaft 1 for being inserted into a first transmission hole 201 on the rotating wheel 2; a connecting rod 3 detachably passing through a first through hole 101 in the drive shaft 1, such that the connecting rod 3 can rotate in the first through hole 101 without dislodging; a first limiting part 401 disposed at the end of the connecting rod 3; and a second limiting part 402 disposed on the outside of the drive shaft 1.

[0095] The outer contour of the second limiting part 402 is larger than the cross-sectional boundary of the first transmission hole 201; the outer contour of the first limiting part 401 extends beyond the cross-sectional boundary of the first through hole 101; the outer contour of the first limiting part 401 has a first extended state extending beyond the end face boundary of the transmission shaft 1; the outer contour of the first limiting part 401 has a second retracted state retracted within the end face boundary of the transmission shaft 1; the first limiting part 401 clamps the rotating wheel 2 with the second limiting part 402 in the first extended state.

[0096] Example 2

[0097] A first connection structure between a drive shaft and a rotating wheel, the first connection structure comprising: a rotating wheel 2 for driving a transmission assembly; a drive shaft 1 for insertion into a first transmission hole 201 on the rotating wheel 2; a connecting rod 3 detachably inserted into a first through hole 101 of the drive shaft 1, such that the connecting rod 3 can rotate in the first through hole 101 without dislodging; a first limiting part 401 disposed at the end of the connecting rod 3; and a second limiting part 402 disposed at the end of the drive shaft 2. The outer side of the drive shaft 1; wherein, the outer contour of the second limiting part 402 is larger than the cross-sectional boundary of the first transmission hole 201; the outer contour of the first limiting part 401 extends beyond the cross-sectional boundary of the first through hole 101, the outer contour of the first limiting part 401 has a first extended state extending beyond the end face boundary of the drive shaft 1, and the outer contour of the first limiting part 401 has a second closed state closed within the end face boundary of the drive shaft 1; the first limiting part 401 and the second limiting part 402 clamp the rotating wheel 2 in the first extended state.

[0098] The first limiting part 401 is plate-shaped, and the outer contour of the first limiting part 401 is square.

[0099] The drive shaft 1 is in the shape of a regular square prism.

[0100] Example 3

[0101] A first connection structure between a drive shaft and a rotating wheel, the first connection structure comprising: a rotating wheel 2 for driving a transmission assembly; a drive shaft 1 for insertion into a first transmission hole 201 on the rotating wheel 2; a connecting rod 3 detachably inserted into a first through hole 101 of the drive shaft 1, such that the connecting rod 3 can rotate in the first through hole 101 without dislodging; a first limiting part 401 disposed at the end of the connecting rod 3; and a second limiting part 402 disposed at the end of the drive shaft 2. The outer side of the drive shaft 1; wherein, the outer contour of the second limiting part 402 is larger than the cross-sectional boundary of the first transmission hole 201; the outer contour of the first limiting part 401 extends beyond the cross-sectional boundary of the first through hole 101, the outer contour of the first limiting part 401 has a first extended state extending beyond the end face boundary of the drive shaft 1, and the outer contour of the first limiting part 401 has a second closed state closed within the end face boundary of the drive shaft 1; the first limiting part 401 clamps the rotating wheel 2 with the second limiting part 402 in the first extended state. The outer edge of the end face of the first limiting part 401 facing the drive shaft 1 is provided with a sloped transition structure 401a, and the end face of the first limiting part 401 facing the drive shaft 1 transitions from a plane to a slope from the middle to the outside.

[0102] In a preferred first embodiment, the end face of the first limiting part 401 facing the drive shaft 1 is used to abut against the end face of the rotating wheel 2.

[0103] As a preferred embodiment, in a specific description, in this embodiment of the invention, the side wall of the first transmission hole 201 is provided with a receiving groove 201a for receiving the extended portion of the first limiting part 401 in the first extended state.

[0104] Example 4

[0105] A first connection structure between a drive shaft and a rotating wheel, the first connection structure comprising: a rotating wheel 2 for driving a transmission assembly; a drive shaft 1 for insertion into a first transmission hole 201 on the rotating wheel 2; a connecting rod 3 detachably inserted into a first through hole 101 of the drive shaft 1, such that the connecting rod 3 can rotate in the first through hole 101 without dislodging; a first limiting part 401 disposed at the end of the connecting rod 3; and a second limiting part 402 disposed at the end of the drive shaft 2. The outer side of the drive shaft 1; wherein, the outer contour of the second limiting part 402 is larger than the cross-sectional boundary of the first transmission hole 201; the outer contour of the first limiting part 401 extends beyond the cross-sectional boundary of the first through hole 101, the outer contour of the first limiting part 401 has a first extended state extending beyond the end face boundary of the drive shaft 1, and the outer contour of the first limiting part 401 has a second closed state closed within the end face boundary of the drive shaft 1; the first limiting part 401 clamps the rotating wheel 2 with the second limiting part 402 in the first extended state. The outer edge of the end face of the first limiting part 401 facing the drive shaft 1 is provided with a sloped transition structure 401a, and the end face of the first limiting part 401 facing the drive shaft 1 transitions from a plane to a slope from the middle to the outside.

[0106] In a preferred first embodiment, the connecting rod 3 is detachably disposed in the first through hole 101 of the drive shaft 1 via a retaining ring structure 501. The retaining ring structure 501 includes: a retaining groove 501a disposed on the connecting rod 3 and located away from the first limiting part 401; and a retaining ring 501b for engaging in the retaining groove 501a, the retaining ring 501b being used to abut against the end face of the drive shaft 1 away from the first limiting part 401.

[0107] In another preferred embodiment, the connecting rod 3 is detachably disposed in the first through hole 101 of the drive shaft 1 via a pin structure; the pin structure includes: a first pin hole 502a disposed on the connecting rod 3; a second pin hole 502b disposed on the drive shaft 1, the second pin hole 502b being used to communicate with the first pin hole 502a; and a pin 502c being used to be inserted into both the first pin hole 502a and the second pin hole 502b.

[0108] Example 5

[0109] A first connection structure between a drive shaft and a rotating wheel, the first connection structure comprising: a rotating wheel 2 for driving an external transmission assembly; a drive shaft 1 for insertion into a first transmission hole 201 on the rotating wheel 2; a connecting rod 3 detachably inserted into a first through hole 101 of the drive shaft 1, such that the connecting rod 3 can rotate in the first through hole 101 without dislodging; a first limiting part 401 disposed at the end of the connecting rod 3; and a second limiting part 402 disposed at the end of the connecting rod 3. The outer side of the drive shaft 1; wherein, the outer contour of the second limiting part 402 is larger than the cross-sectional boundary of the first drive hole 201; the outer contour of the first limiting part 401 extends beyond the cross-sectional boundary of the first through hole 101, the outer contour of the first limiting part 401 has a first extended state extending beyond the end face boundary of the drive shaft 1, and the outer contour of the first limiting part 401 has a second closed state closed within the end face boundary of the drive shaft 1; the first limiting part 401 clamps the wheel 2 with the second limiting part 402 in the first extended state. The outer edge of the end face of the first limiting part 401 facing the drive shaft 1 is provided with a sloped transition structure 401a, and the end face of the first limiting part 401 facing the drive shaft 1 transitions from a plane to a slope from the middle to the outside.

[0110] In the preferred first embodiment, an end drive portion 301 is provided on the end of the connecting rod 3 away from the first limiting portion 401; the end drive portion 301 has a groove-shaped structure; the end drive portion 301 is used to be embedded and fixedly engaged with the third limiting portion A202a on the external handle.

[0111] In another preferred embodiment, the first connecting structure further includes: recesses 202 disposed on the outer wall of the rotating wheel 2, the recesses 202 being arranged in a circular array along the outer wall of the rotating wheel 2; and a ball assembly 601 disposed on one side of the rotating wheel 2, the ball assembly 601 elastically abutting against the recesses 202. The first connecting structure further includes: a circular track 203 disposed on the outer wall of the rotating wheel 2 for connecting the various recesses 202.

[0112] In another preferred embodiment, the ball assembly 601 includes: a spring box 601a, a spring 601b, and a ball 601c; the spring 601b and the ball 601c are disposed in the receiving cavity of the spring box 601a; the ball 601c is used to abut against the recess 202.

[0113] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A first connection structure between the drive shaft and the rotating wheel of a door / window handle, characterized in that, The first connection structure includes: A rotating wheel (2) used to drive the transmission assembly; A drive shaft (1) is used to be inserted into a first drive hole (201) on the rotating wheel (2); A connecting rod (3) is detachably inserted into the first through hole (101) of the transmission shaft (1); The first limiting part (401) is disposed at the end of the connecting rod (3); The second limiting part (402) is disposed on the outside of the drive shaft (1); Wherein, the outer contour of the second limiting part (402) is larger than the cross-sectional boundary of the first transmission hole (201); the outer contour of the first limiting part (401) extends beyond the cross-sectional boundary of the first through hole (101); the outer contour of the first limiting part (401) has a first extended state extending beyond the end face boundary of the transmission shaft (1); the outer contour of the first limiting part (401) has a second closed state closing within the end face boundary of the transmission shaft (1). In the first extended state, the first limiting part (401) clamps the wheel (2) with the second limiting part (402).

2. The first connection structure between the drive shaft and the rotating wheel of the door and window handle according to claim 1, characterized in that, The first limiting part (401) is a block or plate structure with a polygonal outline; the transmission shaft (1) has a polygonal prism shape.

3. The first connection structure between the drive shaft and the rotating wheel of the door and window handle according to claim 2, characterized in that, The first limiting part (401) has a square plate-like structure in its outer contour, and the transmission shaft (1) has a regular square prism shape in its outer contour.

4. The first connection structure between the drive shaft and the rotating wheel of the door and window handle according to claim 2, characterized in that, The first limiting part (401) is provided with a slope transition structure (401a) on the outer edge of the end face of the transmission shaft (1), and the end face of the first limiting part (401) facing the transmission shaft (1) transitions from a plane to a slope from the middle to the outside.

5. The first connection structure between the drive shaft and the rotating wheel of the door and window handle according to claim 1, characterized in that, The end face of the first limiting part (401) facing the transmission shaft (1) is used to abut against the end face of the wheel (2); or a receiving groove (201a) is provided on the side wall of the first transmission hole (201) for receiving the portion of the first limiting part (401) that extends out in the first extended state.

6. The first connection structure between the drive shaft and the rotating wheel of the door / window handle according to any one of claims 1-5, characterized in that, The connecting rod (3) is detachably installed in the first through hole (101) of the transmission shaft (1) via a snap ring structure (501); The retaining ring structure (501) includes: a retaining groove (501a) disposed on the connecting rod (3) and located away from the first limiting part (401); A retaining ring (501b) is used to engage with the slot (501a), the retaining ring (501b) being used to abut against the end face of the drive shaft (1) away from the first limiting part (401).

7. The first connection structure between the drive shaft and the rotating wheel of the door / window handle according to any one of claims 1-5, characterized in that, The connecting rod (3) is detachably installed in the first through hole (101) of the transmission shaft (1) via a pin structure; The latch structure includes: The first pin hole (502a) is provided on the connecting rod (3); A second pin hole (502b) is provided on the drive shaft (1), and the second pin hole (502b) is used to communicate with the first pin hole (502a); Pins (502c) are used to be inserted into both the first pin hole (502a) and the second pin hole (502b).

8. The first connection structure between the drive shaft and the wheel of the door / window handle according to any one of claims 1-5, characterized in that, An end drive part (301) is provided at one end of the connecting rod (3) away from the first limiting part (401); the end drive part (301) is a groove-shaped structure; the end drive part (301) is used to be embedded and fixedly engaged with the third limiting part (A202a) on the external handle.

9. The first connection structure between the drive shaft and the wheel of the door / window handle according to any one of claims 1-5, characterized in that, The first connection structure also includes: The recesses (202) provided on the outer wall of the rotating wheel (2) are arranged in a ring array along the outer wall of the rotating wheel (2); A ball assembly (601) is disposed on one side of the rotating wheel (2), and the ball assembly (601) elastically abuts against the recess (202).

10. The first connection structure between the drive shaft and the rotating wheel of the door / window handle according to claim 9, characterized in that, The first connection structure also includes: An annular track (203) is provided on the outer wall of the wheel (2) to connect the various recesses (202).

11. The first connection structure between the drive shaft and the rotating wheel of the door / window handle according to claim 9, characterized in that, The marble assembly (601) includes: a spring box (601a), a spring (601b), and a marble (601c); The spring (601b) and the ball (601c) are disposed within the receiving cavity of the spring box (601a); The marble (601c) is used to abut against the recess (202).

12. A second connection structure between a drive shaft and a door / window handle, characterized in that, The second connection structure includes: The first connection structure between the drive shaft and the wheel of the door and window handle as described in any one of claims 1-11; Handle (A1), the second transmission hole (A202) of the handle (A1) is sleeved on the end of the transmission shaft (1) away from the wheel (2); A third threaded structure (A301) is provided on the handle (A1). The second bolt structure (A4) is used to engage with the third thread structure (A301) threadedly, and one end of the second bolt structure (A4) is used to abut against the outer wall of the transmission shaft (1).

13. The second connection structure between the drive shaft and the door / window handle according to claim 12, characterized in that, The second connection structure also includes: A third limiting part (A202a) is provided at the bottom of the second transmission hole (A202) for embedding the end drive part (301).

14. A transmission assembly for a door or window handle, characterized in that, The component includes: a first connection structure between the drive shaft and the wheel of the door / window handle as described in any one of claims 1-11.

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