A transmission and a fan

Abstract

The application discloses a transmission device and a fan, and the transmission device comprises a box, a transmission mechanism and a handle. The box is provided with an inner cavity, and the inner wall of the inner cavity is provided with a first sliding groove. The transmission mechanism is arranged in the inner cavity and comprises a first worm, a first worm wheel, a second worm wheel, a first aligning bearing and a second aligning bearing. The first worm wheel is engaged with the first worm, the second worm is arranged on the rotating shaft of the first worm wheel, the second worm wheel is engaged with the second worm, the first aligning bearing is arranged in the first sliding groove, the second aligning bearing is connected to the inner wall of the inner cavity, one end of the rotating shaft is connected to the first aligning bearing, and the other end of the rotating shaft is connected to the second aligning bearing. One end of the handle is fixedly connected to the first aligning bearing, and the handle can push the first aligning bearing to move along the first sliding groove, so that the first worm wheel is separated from or engaged with the first worm. The transmission device provided by the first aspect of the application can drive the head-shaking function of the fan by pushing and pulling the handle, and is convenient to control.

Description

TECHNICAL FIELD

[0001] The present application relates to the fan technical field, especially a kind of transmission and fan. BACKGROUND

[0002] The structure of the existing fan gear box includes pull hand shaft, worm wheel and worm wheel shaft, worm wheel and worm wheel shaft are separated from each other, pull hand shaft is arranged between worm wheel and worm wheel shaft, when motor drives worm wheel to rotate, worm wheel drives pull hand shaft to rotate, so that pull hand shaft drives worm wheel shaft to rotate, in turn, fan is made to swing;When pulling up pull hand shaft, pull hand shaft leaves worm wheel and worm wheel shaft, then worm wheel cannot drive worm wheel shaft to rotate when rotating, so that fan will not swing.But worm wheel keeps rotating can cause the matching position between pull hand shaft and worm wheel to deviate, it is easy to appear the problem that pull hand shaft cannot be pressed down after being pulled up, leading to the problem of fan's swing function.

[0003] A kind of fan gear box is provided in the related art, by connecting pull hand shaft and worm wheel together, after pulling up pull hand shaft, it can make worm wheel leave motor shaft, but pull hand shaft, worm wheel and worm wheel shaft will not separate from each other, so pulling and pressing pull hand shaft will not appear the situation that the connection of worm wheel and worm wheel shaft deviates and leads to pull hand shaft cannot be pressed down, so it can guarantee that the swing function of fan will not appear abnormal.But the above structure needs user to pull up pull hand shaft with great effort, and pull hand shaft is easy to fall due to its own gravity, inconvenient to control. SUMMARY

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a kind of transmission, can drive the swing function of fan by the way of push-pull handle, it is convenient to control.

[0005] In the second aspect, the present application also proposes a fan using the above transmission.

[0006] In a first aspect, the transmission device according to the present application comprises a box, a transmission mechanism and a handle, the box is provided with an inner cavity, the inner wall of the inner cavity is provided with a first sliding groove, a first through hole and a second through hole; the transmission mechanism is arranged in the inner cavity, the transmission mechanism comprises a first worm, a first worm wheel, a second worm wheel, a first aligning bearing and a second aligning bearing, one end of the first worm is arranged in the first through hole and connected with a motor, the first worm wheel is engaged with the first worm, the second worm is arranged on the rotating shaft of the first worm wheel, the second worm wheel is engaged with the second worm, the second worm wheel is provided with a worm wheel shaft, one end of the worm wheel shaft is arranged in the second through hole and connected with a swing mechanism, the first aligning bearing is arranged in the first sliding groove, the second aligning bearing is connected to the inner wall of the inner cavity, one end of the rotating shaft is connected with the first aligning bearing, and the other end of the rotating shaft is connected with the second aligning bearing; the handle is arranged outside the box, one end of the handle is fixedly connected with the first aligning bearing, and the handle can push the first aligning bearing to move along the first sliding groove, so that the first worm wheel is separated from or engaged with the first worm.

[0007] The transmission device according to the above-mentioned embodiments of the present application has at least the following beneficial effects:

[0008] When the first worm and the first worm wheel are engaged, the transmission device of the embodiment of the present application drives the first worm to rotate through the motor, the first worm drives the first worm wheel to rotate, the first worm wheel drives the second worm to rotate, the second worm drives the second worm wheel to rotate, and the second worm wheel drives the worm wheel shaft to rotate, so that the swing mechanism connected with the worm wheel shaft can be started, and then the fan can swing; the two ends of the second worm are respectively connected with the first aligning bearing and the second aligning bearing, the first aligning bearing is connected with the handle, and the second aligning bearing is fixedly connected to the inner wall of the inner cavity; then the handle is pushed to move the first aligning bearing along the first sliding groove, so that the two ends of the second worm can be respectively inclined in opposite directions, and then the first worm wheel can be separated from the first worm, so that the fan cannot swing; when the fan needs to swing, the handle is pulled in the opposite direction to make the first worm wheel engage with the first worm, which is simple to operate and convenient to control.

[0009] According to some embodiments of the present application, the first aligning bearing is provided with a first connecting hole on the side close to the second worm, one end of the second worm is inserted into the first connecting hole, the second worm is gap-fitted with the first connecting hole, the first connecting hole is provided with a first ball bearing in the middle of the bottom wall, the end of the second worm close to the first ball bearing is provided with a first notch corresponding in shape, and the inner wall of the first notch abuts against the first ball bearing.

[0010] According to some embodiments of the present application, the second aligning bearing is provided with a second connecting hole near one side of the second worm, one end of the second worm is inserted into the second connecting hole, the second worm is in clearance fit with the second connecting hole, the second connecting hole is provided with a second ball bearing in the middle of the bottom wall, the second worm is provided with a second notch corresponding in shape near the end close to the second ball bearing, and the inner wall of the second notch abuts against the second ball bearing.

[0011] According to some embodiments of the present application, the inner wall of the inner cavity is provided with a third through hole, the third through hole is arranged opposite to the first sliding groove, and the second aligning bearing is inserted into the third through hole and fixed by a locking member.

[0012] According to some embodiments of the present application, the outer wall of the box is provided with a fourth through hole communicating with the third through hole, the fourth through hole is perpendicular to the third through hole, the locking member is a bolt, the bolt is arranged in the fourth through hole, the end of the bolt abuts against the second aligning bearing, and the bolt is tightened to fix the second aligning bearing.

[0013] According to some embodiments of the present application, the outer wall of the box is provided with a positioning assembly, the handle is connected to the positioning assembly, and when the first worm is engaged with the first worm gear, the handle is fixed in position by the positioning assembly.

[0014] According to some embodiments of the present application, the extension direction of the handle is the same as the length direction of the first sliding groove, the handle is provided with a third notch near one side close to the box, the outer wall of the box is provided with a mounting hole, the positioning assembly comprises a spring and a limiting bead, one end of the spring is fixed to the bottom wall of the mounting hole, the other end of the spring is fixed to the limiting bead, and the spring can push the limiting bead to be clamped into the third notch.

[0015] According to some embodiments of the present application, the third notch has two, and the two third notches are arranged at intervals along the extension direction of the handle.

[0016] According to some embodiments of the present application, the outer wall of the box close to the handle is detachably fixed with a cover plate, the handle is arranged between the cover plate and the box, the cover plate close to the handle is provided with a second sliding groove penetrating through both sides of the cover plate, the second sliding groove is the same as the first sliding groove in direction, and the handle is arranged in the second sliding groove.

[0017] In the second aspect, the present application provides a fan, which comprises a head-shaking mechanism and the transmission device of any one of the first aspect, the transmission device is connected with the head-shaking mechanism, and the transmission device is used for driving the head-shaking mechanism to run or stop.

[0018] The fan according to the above-mentioned embodiments of the present application has at least the following beneficial effects:

[0019] In use, the fan according to the embodiments of the present application drives the swing mechanism to run or stop through the transmission device to realize the swing function of the fan. When the first worm and the first worm wheel are engaged, the first worm is driven to rotate by the motor, the first worm drives the first worm wheel to rotate, the first worm wheel drives the second worm to rotate, the second worm drives the second worm wheel to rotate, and the second worm wheel drives the worm shaft to rotate, so that the swing mechanism connected with the worm shaft can be started, and the fan can swing. The two ends of the second worm are respectively connected with the first and second self-aligning bearings, the first self-aligning bearing is connected with the handle, and the second self-aligning bearing is fixedly connected to the inner wall of the inner cavity. Then, the handle is pushed to move the first self-aligning bearing along the first sliding groove, so that the two ends of the second worm are respectively inclined in opposite directions, and the first worm wheel can be separated from the first worm, so that the fan cannot swing. When the fan needs to swing, the handle is pulled in the opposite direction to make the first worm wheel engage with the first worm, which is simple to operate and easy to control.

[0020] Additional aspects and advantages of the present application will be made apparent by the following description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0022] Figure 1 is a structure schematic diagram of the transmission device of some embodiments of the present application when the handle is pulled;

[0023] Figure 2 is a structure schematic diagram of the transmission device of some embodiments of the present application when the handle is pushed;

[0024] Figure 3 is a schematic diagram of the position distribution of parts of the transmission device of some embodiments of the present application;

[0025] Figure 4 is another schematic diagram of the position distribution of parts of the transmission device of some embodiments of the present application;

[0026] Figure 5 is a first partial structure schematic diagram of the transmission device of some embodiments of the present application;

[0027] Figure 6 is a second partial structure schematic diagram of the transmission device of some embodiments of the present application;

[0028] Figure 7is a third partial structural schematic view of a transmission device of some embodiments of the present application:

[0029] Figure 8 is a fourth partial structural schematic view of a transmission device of some embodiments of the present application.

[0030] In the drawings:

[0031] box 100; inner cavity 110; first chute 120; third through hole 130; fourth through hole 140; mounting hole 150; spring 160; limiting bead 170; cover plate 180;

[0032] first worm 210; first worm wheel 220; second worm 230; first notch 231; second notch 232; second worm wheel 240; worm shaft 250; first angular contact bearing 260; first connecting hole 261; first ball 262; second angular contact bearing 270; second connecting hole 271; second ball 272;

[0033] handle 300; third notch 310. DETAILED DESCRIPTION

[0034] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.

[0035] In the description of the present application, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0036] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of indicated technical features.

[0037] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0038] Referring to Figures 1 to 8 , according to the transmission device proposed by the application, comprising a box body 100, a transmission mechanism and a handle 300, the box body 100 is provided with an inner cavity 110, the inner wall of the inner cavity 110 is provided with a first sliding groove 120, a first through hole and a second through hole; the transmission mechanism is arranged in the inner cavity 110, and the transmission mechanism comprises a first worm 210, a first worm wheel 220, a second worm wheel 240, a first aligning bearing 260 and a second aligning bearing 270, one end of the first worm 210 is arranged in the first through hole and connected with a motor, the first worm wheel 220 is engaged with the first worm 210, the second worm 230 is arranged on the rotating shaft of the first worm wheel 220, the second worm wheel 240 is engaged with the second worm 230, the second worm wheel 240 is provided with a worm shaft 250, one end of the worm shaft 250 is arranged in the second through hole and connected with a swing mechanism, the first aligning bearing 260 is arranged in the first sliding groove 120, the second aligning bearing 270 is connected with the inner wall of the inner cavity 110, one end of the rotating shaft is connected with the first aligning bearing 260, and the other end is connected with the second aligning bearing 270; the handle 300 is arranged outside the box body 100, one end of the handle 300 is fixedly connected with the first aligning bearing 260, and the handle 300 can drive the first aligning bearing 260 to move along the first sliding groove 120, so that the first worm wheel 220 is separated from or engaged with the first worm 210.

[0039] Specifically, when the transmission device of the embodiment of the application is engaged with the first worm 210 and the first worm wheel 220, the motor drives the first worm 210 to rotate, the first worm 210 drives the first worm wheel 220 to rotate, the first worm wheel 220 drives the second worm 230 to rotate, the second worm 230 drives the second worm wheel 240 to rotate, and the second worm wheel 240 drives the worm shaft 250 to rotate, so that the swing mechanism connected with the worm shaft 250 can be started, and then the fan can be swung; the two ends of the second worm 230 are respectively connected with the first aligning bearing 260 and the second aligning bearing 270, the first aligning bearing 260 is connected with the handle 300, and the second aligning bearing 270 is fixedly connected with the inner wall of the inner cavity 110, so that the handle 300 is pushed to drive the first aligning bearing 260 to move along the first sliding groove 120, so that the two ends of the second worm 230 can be tilted in opposite directions, and then the first worm wheel 220 can be separated from the first worm 210, so that the fan cannot be swung, and when the fan needs to be swung, the handle 300 is pulled in the opposite direction to make the first worm wheel 220 engage with the first worm 210, which is simple to operate and convenient to control.

[0040] Referring to Figure 5According to some embodiments of the present application, the first self-aligning bearing 260 is provided with a first connecting hole 261 near one side of the second worm 230, one end of the second worm 230 is inserted into the first connecting hole 261, the second worm 230 is in clearance fit with the first connecting hole 261, the middle of the bottom wall of the first connecting hole 261 is provided with a first ball 262, and the end of the second worm 230 near the first ball 262 is provided with a first notch 231 corresponding in shape, and the inner wall of the first notch 231 abuts against the first ball 262.

[0041] With reference to Figure 6 According to some embodiments of the present application, the second self-aligning bearing 270 is provided with a second connecting hole 271 near one side of the second worm 230, one end of the second worm 230 is inserted into the second connecting hole 271, the second worm 230 is in clearance fit with the second connecting hole 271, the middle of the bottom wall of the second connecting hole 271 is provided with a second ball 272, and the end of the second worm 230 near the second ball 272 is provided with a second notch 232 corresponding in shape, and the inner wall of the second notch 232 abuts against the second ball 272.

[0042] It can be understood that the structures of the first self-aligning bearing 260 and the second self-aligning bearing 270 are similar to those of a universal wheel, one end of the second worm 230 is in fit with the first ball 262 through the first notch 231, so that the end of the second worm 230 can swing in all directions with the first ball 262 as a fulcrum, and the other end of the second worm 230 is in fit with the second ball 272 through the second notch 232, so that the end of the second worm 230 can swing in all directions with the second ball 272 as a fulcrum. When the first self-aligning bearing 260 is moved along the first sliding groove 120 by pushing the handle 300, since the position of the second self-aligning bearing 270 is fixed, the two ends of the second worm 230 are tilted in opposite directions, so that the first worm wheel 220 can be separated from the first worm 210.

[0043] Further, with reference to Figure 1 and Figure 2 In some embodiments, the inner wall of the inner cavity 110 is provided with a third through hole 130, the third through hole 130 is arranged opposite to the first sliding groove 120, the second self-aligning bearing 270 is inserted into the third through hole 130 and fixed by a locking member.

[0044] Further, with reference to Figure 1 and Figure 2 In some embodiments, the outer wall of the box body 100 is provided with a fourth through hole 140 communicating with the third through hole 130, the fourth through hole 140 is perpendicular to the third through hole 130, the locking member is a bolt, the bolt is arranged in the fourth through hole 140, the end of the bolt abuts against the second self-aligning bearing 270, the bolt is tightened to fix the second self-aligning bearing 270, and the bolt is loosened when the second self-aligning bearing 270 needs to be disassembled.

[0045] Further, the fixing mode of the second aligning bearing 270 can also be other fixing structures, which can be determined according to actual conditions, and will not be described here.

[0046] With reference to Figures 1 to 8 , according to some embodiments of the present application, the outer wall of the box body 100 is provided with a positioning assembly, the handle 300 is connected to the positioning assembly, and when the first worm 210 is engaged with the first worm wheel 220, the handle 300 is fixed in position through the positioning assembly.

[0047] Specifically, with reference to Figure 7 and Figure 8 , according to some embodiments of the present application, the extension direction of the handle 300 is the same as the length direction of the first sliding groove 120, the side of the handle 300 close to the box body 100 is provided with a third notch 310, the outer wall of the box body 100 is provided with a mounting hole 150, the positioning assembly includes a spring 160 and a limiting bead 170, one end of the spring 160 is fixedly connected to the bottom wall of the mounting hole 150, the other end of the spring 160 is fixedly connected to the limiting bead 170, and the spring 160 can push the limiting bead 170 to be clamped into the third notch 310.

[0048] It can be understood that the clamping of the limiting bead 170 into the third notch 310 by the spring 160 can prevent the handle 300 from shaking during use, and can ensure the normal operation of the fan head-shaking function. At the same time, through the cooperation of the limiting bead 170 and the third notch 310, the user can quickly and accurately position the engagement position of the first worm 210 and the first worm wheel 220, and the first worm 210 and the first worm wheel 220 will not be damaged due to excessive movement of the handle 300.

[0049] Further, according to some embodiments of the present application, the third notch 310 has two, and the two third notches 310 are arranged at intervals along the extension direction of the handle 300. Specifically, the two third notches 310 can correspond to two positions when the first worm 210 is engaged with and separated from the first worm wheel 220, so as to facilitate the user to quickly and accurately position, and avoid the user to move the handle 300 excessively.

[0050] With reference to Figure 1 and Figure 2 , according to some embodiments of the present application, the outer wall of the side of the box body 100 close to the handle 300 is detachably fixed with a cover plate 180, the handle 300 is arranged between the cover plate 180 and the box body 100, the side of the cover plate 180 close to the handle 300 is provided with a second sliding groove penetrating through both sides of the cover plate 180, the second sliding groove is in the same direction as the first sliding groove 120, and the handle 300 is arranged in the second sliding groove, so as to facilitate the disassembly of the handle 300.

[0051] According to the fan provided by the application, the transmission device is connected with the head-shaking mechanism and is used for driving the head-shaking mechanism to operate or stop. Since the fan adopts all the technical solutions, the fan should have the same beneficial effects, which will not be repeated here. In the embodiments of the application, the connecting member can be a clip or a plate member with other shapes, and the connecting mode can be buckling, screwing, welding or the like, which will not be repeated here.

[0052] The embodiments of the application are described in detail above with reference to the drawings, but the application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the application.

Claims

1. A transmission device, characterized in that, include: The box body has an inner cavity, and the inner wall of the inner cavity has a first sliding groove, a first through hole and a second through hole; A transmission mechanism is disposed in the inner cavity. The transmission mechanism includes a first worm, a first worm wheel, a second worm wheel, a first self-aligning bearing, and a second self-aligning bearing. One end of the first worm is installed in the first through hole and connected to a motor. The first worm wheel meshes with the first worm. A second worm is disposed on the shaft of the first worm wheel. The second worm wheel meshes with the second worm. The second worm wheel is provided with a worm wheel shaft. One end of the worm wheel shaft is installed in the second through hole and connected to a swaying mechanism. The first self-aligning bearing is installed in the first sliding groove. The second self-aligning bearing is connected to the inner wall of the inner cavity. One end of the shaft is connected to the first self-aligning bearing, and the other end is connected to the second self-aligning bearing. A first connecting hole is provided on the side of the first self-aligning bearing near the second worm. One end of the second worm is inserted into the first connecting hole. The second worm and the first connecting hole are clearance-fitted. A first ball is disposed in the middle of the bottom wall of the first connecting hole. A first recess of corresponding shape is disposed on the end of the second worm near the first ball. The inner wall of the first recess abuts against the first ball. A handle is disposed outside the housing. One end of the handle is fixed to the first self-aligning bearing. The handle can push the first self-aligning bearing to move along the first slide groove, so that the first worm gear and the first worm can be separated or engaged. A positioning component is provided on the outer wall of the housing. The handle is connected to the positioning component. When the first worm and the first worm gear are engaged, the handle is fixed in position by the positioning component. The extension direction of the handle is the same as the length direction of the first slide groove. A third recess is provided on the side of the handle near the housing. A mounting hole is provided on the outer wall of the housing. The positioning component includes a spring and a limiting bead. One end of the spring is fixed to the bottom wall of the mounting hole, and the other end of the spring is fixed to the limiting bead. The spring can push the limiting bead into the third recess. There are two third recesses, which are arranged at intervals along the extension direction of the handle.

2. The transmission device according to claim 1, characterized in that, The second self-aligning bearing has a second connecting hole on the side near the second worm. One end of the second worm is inserted into the second connecting hole. The second worm and the second connecting hole are in clearance fit. A second ball is provided in the middle of the bottom wall of the second connecting hole. A second recess with a corresponding shape is provided at the end of the second worm near the second ball. The inner wall of the second recess abuts against the second ball.

3. The transmission device according to claim 2, characterized in that, The inner wall of the cavity is provided with a third through hole, which is arranged opposite to the first sliding groove. The second self-aligning bearing is inserted into the third through hole and fixed by a locking member.

4. The transmission device according to claim 3, characterized in that, The outer wall of the housing is provided with a fourth through hole that connects to the third through hole. The fourth through hole is perpendicular to the third through hole. The locking element is a bolt. The bolt is installed in the fourth through hole. The end of the bolt abuts against the second self-aligning bearing. Tightening the bolt fixes the second self-aligning bearing.

5. The transmission device according to claim 1, characterized in that, A cover plate is detachably fixed to the outer wall of the housing near the handle. The handle is arranged between the cover plate and the housing. A second sliding groove is provided on the side of the cover plate near the handle, which runs through both sides of the cover plate. The second sliding groove is in the same direction as the first sliding groove. The handle passes through the second sliding groove.

6. A fan, characterized in that, It includes a swaying mechanism and a transmission device as described in any one of claims 1 to 5, wherein the transmission device is connected to the swaying mechanism and is used to drive the swaying mechanism to run or stop.

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