阅读说明：本技术 一种减速电机的离合结构 (Clutch structure of speed reduction motor ) 是由 吴晨伟 王海志 夏武林 于 2021-09-22 设计创作，主要内容包括：本发明提供一种减速电机的离合结构,包括有主动齿、被动齿、轴套、多个滚轴及贯穿所述主动齿和被动齿轴线的轴芯,所述主动齿端面设有凸起的多边形的驱动台,所述被动齿端面设有内凹的圆形的凹陷,该轴套周向设有多个用于容纳滚轴的圆柱形的容腔,每个容腔在所述轴套的圆周外侧均开有槽口,所述轴套套在所述驱动台外侧,被动齿转动时,每个滚轴均对被动齿内壁无挤压,所述被动齿相对于主动齿转动,主动齿转动时,所述滚轴朝向槽口方向挤压并挤压被动齿内壁,使得所述主动齿与所述被动齿之间卡接同步转动。本发明的驱动台驱动滚轴远离其直边的中间时,滚轴在驱动台上的位置距离驱动台轴心的距离逐渐变大,从而实现离合功能的切换。(The invention provides a clutch structure of a speed reduction motor, which comprises a driving tooth, a driven tooth, a shaft sleeve, a plurality of rollers and a shaft core penetrating through the axes of the driving tooth and the driven tooth, wherein a raised polygonal driving platform is arranged on the end surface of the driving tooth, an inwards concave circular recess is arranged on the end surface of the driven tooth, a plurality of cylindrical containing cavities for containing the rollers are circumferentially arranged on the shaft sleeve, a notch is formed in the outer side of the circumference of the shaft sleeve for each containing cavity, the shaft sleeve is sleeved on the outer side of the driving platform, when the driven tooth rotates, each roller does not extrude the inner wall of the driven tooth, the driven tooth rotates relative to the driving tooth, and when the driving tooth rotates, the rollers extrude and extrude the inner wall of the driven tooth towards the direction of the notches, so that the driving tooth and the driven tooth are clamped and synchronously rotated. When the driving roller of the driving platform is far away from the middle of the straight edge, the distance between the position of the roller on the driving platform and the axis of the driving platform is gradually increased, so that the switching of the clutch function is realized.)

1. The utility model provides a gear motor's separation and reunion structure, is including driving tooth, passive tooth, axle sleeve, a plurality of roller bearing and run through the axle core of driving tooth and passive tooth axis, its characterized in that: the end face of the driving tooth is provided with a raised polygonal driving table, the end face of the driven tooth is provided with an inwards concave circular recess, the recess is internally provided with a freely rotatable shaft sleeve, a plurality of rollers and a driving table, the shaft sleeve is circumferentially provided with a plurality of cylindrical containing cavities for containing the rollers, each containing cavity is provided with a notch at the position outside the circumference of the shaft sleeve, the shaft sleeve is sleeved outside the driving table, when each roller is close to the middle of a straight edge of the driving table, the driven tooth can rotate relative to the driving tooth, and no extrusion exists between the rollers and the inner wall of the recess; when the driving tooth rotates, the driving table synchronously drives the roller to face the direction of the notch, and each roller partially extends out of the notch and extrudes the inner wall of the driven tooth, so that the driving tooth and the driven tooth are synchronously connected in a clamping mode.

2. The clutch structure of the reduction motor according to claim 1, wherein: one end of the cavity is open, and the other end is closed.

3. The clutch structure of the reduction motor according to claim 1, wherein: the corners of the driving platform are all subjected to arc treatment, so that the outer dimension of the driving platform is not interfered with the inner wall of the shaft sleeve.

4. The clutch structure of the reduction motor according to claim 1, wherein: the driving platform is a regular polygon.

5. The clutch structure of the reduction motor according to claim 1, wherein: the driving table and the driving tooth are integrated.

Technical Field

The invention relates to the technical field of speed reducing motors, in particular to a clutch structure of a speed reducing motor.

Background

With the continuous improvement of living standard, the requirements of people on highly automated windows are gradually improved, the automatic opening of the window sashes needs to be realized, and the manual opening can also be adopted, so that the clutch can not be opened, and the automatic operation and the manual operation are not interfered with each other. And adopt automatic opening can use gear motor, especially be applied to the gear motor in intelligent door and window or intelligent lock field, current separation and reunion structure is comparatively complicated usually, leads to the overall structure of lock complicated, influences the control of product cost, volume and the further promotion of defective rate.

Such as patent publication numbers: CN212775255U, which provides a magnetic attraction type clutch and structure thereof, wherein the ball is restricted by the moving guide slot and the magnetic attraction component arranged on the first toggle convex part, and the second toggle convex part can toggle the ball to move and clamp in the restricted concave position or the magnetic attraction component provides magnetic attraction force to retract the ball into the moving guide slot; the ball is clamped in the limited concave position or retracts to move the guide groove to have a specific moving track, and compared with the traditional clutch, the electric control adjustment of the driver is facilitated; however, this structure is too complicated to reduce the cost. There are also patent publication numbers: CN211549165U provides a clutch structure of a speed reduction motor, which improves the clutch member of the clutch structure, adopts an elastic manner to connect the clutch member with an input gear, and realizes clutch switching between automatic operation mode and manual operation mode by a simple and ingenious structure. Although the structure is simple, the clutch piece is connected with the input gear in an elastic force mode, the problem of setting the elastic force is involved, if the elastic force is too small, the window sash is used for a long time, the friction force of the window sash is increased, the originally set elastic force is possibly insufficient, the input gear and the clutch piece can be separated, and the window sash cannot be opened electrically.

Therefore, how to design a clutch with simple structure and reliable use is a product urgently needed by the market at present.

Disclosure of Invention

In order to solve the problems, the invention provides a clutch structure of a speed reducing motor, when a driving roller of a driving platform is far away from the middle of a straight edge of the driving roller, the distance between the position of the roller on the driving platform and the axis of the driving platform is gradually increased, each roller is forced to partially extend out of a notch and extrude the inner wall of a driven tooth, the extrusion force is large enough, and the driving tooth and the driven tooth are clamped and synchronously rotated, so that the switching of the clutch function is realized.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a clutch structure of a speed reduction motor comprises a driving tooth, a driven tooth, a shaft sleeve, a plurality of rolling shafts and a shaft core penetrating through the axes of the driving tooth and the driven tooth, wherein a raised polygonal driving platform is arranged on the end face of the driving tooth, an inwards concave circular recess is arranged on the end face of the driven tooth, the shaft sleeve, the plurality of rolling shafts and the driving platform which can rotate freely are accommodated in the recess, a plurality of cylindrical accommodating cavities for accommodating the rolling shafts are circumferentially arranged on the shaft sleeve, notches are formed in the positions, located on the outer side of the circumference, of each accommodating cavity, of the shaft sleeve is sleeved on the outer side of the driving platform, when each rolling shaft is close to the middle of a straight edge of the driving platform, the driven tooth can rotate relative to the driving tooth, and no extrusion exists between each rolling shaft and the inner wall of the recess; when the driving tooth rotates, the driving table synchronously drives the roller to face the direction of the notch, and each roller partially extends out of the notch and extrudes the inner wall of the driven tooth, so that the driving tooth and the driven tooth are synchronously connected in a clamping mode.

Preferably, one end of the cavity is open, and the other end is closed.

Preferably, the corners of the driving platform are all processed by circular arc treatment, so that the outer dimension of the driving platform and the inner wall of the shaft sleeve do not interfere with each other.

Preferably, the driving table is a regular polygon.

Preferably, the driving table and the driving tooth are integrated.

The invention has the beneficial effects that:

the roller is arranged in the middle of the straight edge of the driving table, and when the driven gear rotates, the roller does not extrude the inner wall of the driven gear, so that the driven gear can rotate relative to the driving gear; when the initiative tooth rotates, the centre of its straight flange is kept away from to drive platform drive roller bearing, and the position of roller bearing on the drive platform is from the distance grow gradually of drive platform axle center, consequently drive platform synchronous drive the roller bearing orientation the extrusion of notch direction, every the roller bearing part stretches out the notch extrudees driven tooth inner wall, and its extrusion force is enough big and makes the initiative tooth with joint synchronous rotation between the driven tooth to this realizes clutch function's switching, thereby realizes electric door and window manual operation and electric operation's switching.

Drawings

Fig. 1 is a perspective view of a clutch structure of a reduction motor of embodiment 1;

fig. 2 is an exploded view of a clutch structure of the reduction motor of embodiment 1;

fig. 3 is an exploded view from another perspective of the clutch structure of the reduction motor of embodiment 1;

fig. 4 is a front view of a clutch structure of the reduction motor of embodiment 1;

FIG. 5 is a cross-sectional view taken along plane A-A of FIG. 4;

fig. 6 is a perspective view of the sleeve 6 in embodiment 1;

fig. 7 is a plan view of the driving tooth 1 in embodiment 1;

fig. 8 is an exploded view of a clutch structure of the reduction motor of embodiment 2;

fig. 9 is an exploded view from another perspective of the clutch structure of the reduction motor of embodiment 2.

Fig. 10 is a plan view of the driving tooth 1 in embodiment 2;

Detailed Description

The technical solution of the present invention is described below with reference to the accompanying drawings and examples.

Example 1: referring to fig. 1 to 7, the clutch structure of a speed reduction motor according to this embodiment includes a driving tooth 1, a driven tooth 2 and a shaft core 3 penetrating through axes of the driving tooth 1 and the driven tooth 2, wherein a convex regular hexagonal driving table 4 is disposed on an end surface of the driving tooth 1 facing the driven tooth 2, an inward concave circular recess 5 is disposed on an end surface of the driven tooth 2 facing the driving tooth 1, a shaft sleeve 6 is freely rotatably disposed in the recess 5, the shaft sleeve 6 is circumferentially provided with a plurality of cylindrical cavities 8 for accommodating rollers 7, one end of each cavity 8 is open, and the other end is closed, so that the shaft sleeve 6 is integral, the rollers 7 can be inserted from an open end of the cavity 8, the rollers 7 can freely roll in the cavities 8, each cavity 8 is provided with a notch 9 at an outer side of a circumference of the shaft sleeve 6, when the rollers 7 are pressed toward the notches 9, the roller 7 can partially extend out of the notch 9 and press the inner wall of the driven tooth 2. The bearing shaft 6 is characterized in that a roller 7 is installed in a containing cavity 8 of the shaft sleeve 6, the shaft sleeve 6 is sleeved on the outer side of the driving table 4, the roller 7 is close to the middle of a straight edge of the driving table 4, the shaft sleeve 6 is arranged in the recess 5 in a matched mode, and the shaft core 3 penetrates through the driving teeth 1 and the driven teeth 2. When the roller 7 is close to the middle part of the straight edge of the driving platform 4, the sum of the radius of the inscribed circle of the driving platform 4 and the diameter of the roller 7 is less than the radius of the recess 5, so that the roller 7 does not extrude the inner wall of the driven gear 2; when the roller 7 is far away from the middle part of the straight edge of the driving platform 4, the distance between the position of the roller 7 on the driving platform 4 and the axle center of the driving platform 4 is gradually increased, and the sum of the diameters of the roller 7 is larger than the radius of the recess 5, so that when the roller 7 is far away from the middle part of the straight edge of the driving platform 4, the roller 7 presses the inner wall of the driven tooth 2. In summary, when the driven gear 2 rotates, each roller 7 is close to the middle of the straight edge of the driving table 4 and has no extrusion on the inner wall of the driven gear 2, and the driven gear 2 can rotate relative to the driving gear 1. When the driving tooth 1 rotates, the driving table 4 synchronously drives the rolling shaft 7 to move towards the notch 9 for extruding, every the rolling shaft 7 partially extends out of the notch 9 and extrudes the inner wall of the driven tooth 2, the rolling shaft 7 is clamped on the driving table 4 on the one hand, and the inner wall of the driven tooth 2 is extruded on the other hand, so that the rolling shaft 7 and the driven tooth 2 are clamped, and further the driving tooth 1 and the driven tooth 2 are synchronously clamped and rotated.

Specifically, the corners of the driving table 4 are all processed by arc processing, so that the outer dimension of the driving table 4 and the inner wall of the shaft sleeve 6 do not interfere with each other, and the shaft sleeve 6 can be ensured to be sleeved outside the driving table 4.

Specifically, the driving table 4 and the driving tooth 1 are integrated, so that the processing cost can be saved, and the driving table 4 and the driving tooth 1 do not need to be fixed.

When the driven gear 2 of the embodiment rotates, the roller 7 is arranged in the middle of the straight edge of the driving table 4 and is close to the position of the inscribed circle of the regular polygon, and at the moment, the roller 7 does not extrude the inner wall of the driven gear 2, so that the driven gear 2 can rotate relative to the driving gear 1; when drive tooth 1 rotates, the centre of its straight flange is kept away from to drive platform 4 drive roller 7, and the distance of roller 7 position on drive platform 4 apart from drive platform 4 axle center is grow gradually, consequently drive platform 4 synchronous drive roller 7 orientation the extrusion of notch 9 direction, every roller 7 part stretches out notch 9 and extrusion driven tooth 2 inner wall, its extrusion force is enough big and make drive tooth 1 with joint synchronous rotation between the driven tooth 2 to realize the switching of electric door and window manual operation and electric operation.

What needs to be particularly explained here is: after the driving gear 1 drives the driven gear 2 to rotate, when the driven gear 2 needs to rotate freely relative to the driving gear 1, the driving gear 1 needs to be rotated reversely, so that the roller 7 is separated from a blocked state and returns to the middle of the straight edge of the driving table 4.

Example 2: referring again to fig. 8 to 10, the present embodiment is different from embodiment 1 in that: the drive table 4 is shaped as a regular triangle, the corresponding bushing 6 having three receptacles 8.

In addition, the shape of the drive stage 4 may be square, regular pentagon, or regular octagon.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.