CN216519442U

CN216519442U - Belt tensioner and belt drive structure

Info

Publication number: CN216519442U
Application number: CN202122606919.3U
Authority: CN
Inventors: 林新达; 陈仁典
Original assignee: Guangdong Topstrong Living Innovation and Integration Co Ltd
Current assignee: Guangdong Topstrong Living Innovation and Integration Co Ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-05-13
Anticipated expiration: 2031-10-27

Abstract

The utility model provides a belt tensioning device and a belt driving structure, wherein the belt tensioning device comprises a tensioning seat for mounting a driven wheel, an adjusting seat, a connecting rod and an adjusting rod; the adjusting seat is provided with an accommodating cavity, and a abdicating hole and an adjusting hole which are communicated with the accommodating cavity; the connecting rod comprises a screw and a first tooth part connected to one end of the screw, the first tooth part is embedded in the accommodating cavity, and the screw penetrates through the abdicating hole to be in threaded connection with the tensioning seat; the adjusting rod comprises an adjusting end and a second tooth part which are connected with each other, the second tooth part is arranged in the adjusting hole and meshed with the first tooth part, and the adjusting end is used for connecting an external tool to rotate so as to drive the first tooth part to rotate to realize axial movement of the screw rod. Constitute the worm gear structure through connecting rod and regulation pole, make things convenient for the tensioning seat and adjust the relative position between the seat and adjust to adjustable from the relative position relation of driving wheel with the action wheel, realize that the belt elasticity is adjusted, adjust simple structure stable, adjust convenient operation easy to carry out.

Description

Belt tensioner and belt drive structure

Technical Field

The utility model relates to the technical field of belt transmission, in particular to a belt tensioning device and a belt driving structure.

Background

In the automatically-controlled door, adopt the belt drive structure to realize opening and closing of door leaf automatically, wherein, the belt drive structure includes motor, action wheel, follows driving wheel, driving belt (like the synchronous belt) and belt overspeed device tensioner, and the motor setting is in the hanger rail outside, and action wheel and follow driving wheel are all located in the hanger rail and are connected through driving belt, and belt overspeed device tensioner locates in the hanger rail and is used for adjusting driving belt's elasticity. However, when the transmission belt is loosened after long-term use and the tightness of the belt needs to be adjusted through the belt tensioning device, the hanger rail needs to be disassembled to be adjustable, so that the adjustment and maintenance of the belt driving structure are inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a belt tensioning device which is simple in structure and convenient to adjust and a belt driving structure applying the belt tensioning device.

In order to achieve the above purpose, the utility model provides the following technical scheme:

in a first aspect, the present invention provides a belt tensioner for connecting with a driven pulley of a belt driving structure to move the driven pulley closer to or away from a driving pulley, comprising: the tensioning seat, the adjusting seat, the connecting rod and the adjusting rod are used for installing the driven wheel; the adjusting seat is provided with an accommodating cavity, and a abdicating hole and an adjusting hole which are communicated with the accommodating cavity, and the abdicating hole and the adjusting hole are vertical to each other; the connecting rod comprises a screw and a first tooth part connected to one end of the screw, the first tooth part is embedded in the accommodating cavity, and the screw penetrates out of the abdicating hole and is in threaded connection with the tensioning seat; the adjusting rod comprises an adjusting end and a second tooth part which are connected with each other, the second tooth part is arranged in the adjusting hole and meshed with the first tooth part, and the adjusting end is used for connecting an external tool to rotate to drive the first tooth part to rotate so as to realize axial movement of the screw rod.

In one embodiment, the first toothed segment is a crown gear.

In one embodiment, the adjusting rod is provided with a limiting groove between the adjusting end and the second tooth part; the adjusting seat is provided with a limiting hole at a position corresponding to the limiting groove, and the limiting hole is communicated with the adjusting hole; the limiting pin penetrates into the adjusting hole from the limiting hole and is embedded in the limiting groove.

In one embodiment, the limiting groove is provided in a ring shape.

In one embodiment, one end of the limit pin is provided with a spline, and the spline is in interference fit with the adjusting seat.

In one embodiment, the tensioning seat comprises a mounting plate, a regulating plate connected to one end of the mounting plate and two supporting plates connected to two sides of the mounting plate; the mounting plate is provided with a mounting hole for mounting a rotating shaft of the driven wheel in a penetrating way; the adjusting seat is provided with a supporting part, the two supporting plates are abutted to the supporting part, and the screw rod is connected with the adjusting plate.

In one embodiment, the supporting part is inwards concave along the side edge to form a sliding rail, and the two supporting plates clamp the sliding rail and can slide along the sliding rail.

In one embodiment, the bottom end of the adjusting seat is provided with fixing holes at two sides of the adjusting hole for penetrating screws to fix the adjusting seat on an external structure.

In one embodiment, one end of the mounting plate protrudes out of the support plate to form a mounting part, and the mounting hole is formed in the mounting part; the other end of the mounting plate is provided with a fastening hole for penetrating a fastening screw to tightly push the belt tensioning device to the external structure.

As a second aspect, the present invention further relates to a belt driving structure, which includes a motor, a hanger rail, a driving wheel, a driven wheel, a synchronous belt wound around the driving wheel and the driven wheel, and the belt tensioning device, wherein the motor is disposed outside the hanger rail, the driving wheel and the belt tensioning device are both disposed in the hanger rail, the driving wheel is connected to an output shaft of the motor, and the driven wheel is rotatably connected to the tensioning seat.

The technical scheme provided by the utility model has the beneficial effects that:

according to the belt tensioning device, the adjusting rod is rotated from the lower part of the adjusting seat to drive the connecting rod to rotate and axially move, so that the horizontal distance between the tensioning seat and the adjusting seat can be adjusted, the distance between the driven wheel and the driving wheel can be adjusted when the belt tensioning device is applied to a belt driving structure, the tensioning adjustment of a belt is completed, and a worm and gear structure is formed between the connecting rod and the adjusting rod, so that the structure is simple and stable; in the adjusting process, the hanger rail does not need to be detached, the adjustment is simple and easy to operate, and the daily overhaul and maintenance are convenient.

Since the belt driving structure employs the belt tensioner, it necessarily has all the advantageous effects of the belt tensioner.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below.

FIG. 1 is a perspective view of a belt tensioner provided in accordance with one embodiment of the present invention;

FIG. 2 is an exploded view of the belt tensioner of FIG. 1;

FIG. 3 is a cross-sectional view of the belt tensioner of FIG. 1;

fig. 4 is an exploded view of a belt drive structure according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and the embodiments of the present invention are illustrative only and are not intended to limit the scope of the present invention.

It should be understood that the various steps recited in the method embodiments of the present invention may be performed in a different order and/or performed in parallel. Moreover, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the utility model is not limited in this respect.

The term "include" and variations thereof as used herein are open-ended, i.e., "including but not limited to". The term "coupled" may refer to direct coupling or indirect coupling via intermediate members (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Relevant definitions for other terms will be given in the following description.

It should be noted that the terms "first", "second", and the like in the present invention are only used for distinguishing the devices, modules or units, and are not used for limiting the devices, modules or units to be different devices, modules or units, and are not used for limiting the sequence or interdependence relationship of the functions executed by the devices, modules or units.

Referring to fig. 1 to 3, the present invention relates to a belt tensioning device 100, which can be applied to a belt driving structure for adjusting a relative distance between a driving pulley and a driven pulley 500 to tension a belt 300, and is illustrated in an exploded view in fig. 4.

Belt overspeed device tensioner 100 includes tensioning seat 10, adjusts seat 20 and connects the adjusting member 30 that realizes the two interval between tensioning seat and the regulation seat and adjust, the adjusting member includes connecting rod 31 and adjusts pole 32, connecting rod 31 is connected between adjusting seat 20 and tensioning seat 10 and is realized the two apart from adjusting, adjust the meshing between pole 32 and the connecting rod 31 to the accessible rotates the rotation that the pole 32 realized connecting rod 31, and then realizes that connecting rod 31 adjusts the axial displacement of seat 20 and tensioning seat 10 relatively.

Tensioning seat 10 includes mounting panel 11, backup pad 12 and regulating plate 13, backup pad 12 is equipped with two, and it meets with mounting panel 11 perpendicularly in 11 length direction's of mounting panel both sides, regulating plate 13 meets with mounting panel 11 perpendicularly in 11 length direction's of mounting panel one end to regulating plate 13 is located the same face of mounting panel 11 with backup pad 12. The one end that regulating plate 13 was kept away from to mounting panel 11 is from backup pad 12 edge protrusion, forms the installation department, the mounting hole has been seted up on the installation department for the installation is from the pivot of driving wheel 500. The adjusting plate 13 is provided with a threaded hole.

The adjusting seat 20 comprises a seat body which is substantially rectangular and a supporting portion which is perpendicular to the seat body, the upper end of the seat body is provided with an accommodating cavity and a yielding hole 21, the yielding hole 21 is communicated with the accommodating cavity, the seat body is further provided with an adjusting hole, the adjusting hole extends towards the other end along one end face of the length direction of the adjusting seat 20 and is communicated with the accommodating cavity, and preferably, the adjusting hole is perpendicular to the yielding hole 21. The two support plates 12 of the tensioning seat 10 abut against the support portions, thereby avoiding the tensioning seat 10 from shaking during adjustment.

One end of the connecting rod 31 is provided with an external thread matched with the threaded hole of the adjusting plate 13 to form a screw 311, and the other end is provided with a first tooth part, optionally, the first tooth part is a crown gear 312. The screw 311 passes through the abdicating hole 21 and is connected with the threaded hole of the adjusting plate 13 in a threaded manner, and the crown gear 312 is located in the accommodating cavity.

One end of the adjusting rod 32 is provided with a second tooth portion 321, the second tooth portion 321 can be engaged with the crown gear 312, and the other end of the adjusting rod 32 is an adjusting end and can be connected with an external tool to be driven to rotate. The adjusting rod 32 is inserted into the adjusting hole, and the second tooth portion 321 is engaged with the crown gear 312, so that the crown gear 312 is driven to rotate when the adjusting end is driven to rotate.

From this, realize adjusting being connected of seat 20 and tensioning seat 10 through connecting rod 31, drive connecting rod 31 through adjusting pole 32 and rotate and adjust seat 20 and tensioning seat 10 axial displacement relatively, realize tensioning seat 10 and adjust the distance adjustment between the seat 20 to can adjust the position from driving wheel 500 when overspeed device tensioner 100 installs in belt drive structure, and then adjust the action wheel and follow the interval of driving wheel 500, realize the tensioning of belt 300 and adjust. The worm and gear structure is formed between the adjusting rod 32 and the connecting rod 31, the structure is simple and stable, adjustment can be achieved without dismounting the hanger rail 400 when the belt 300 is tensioned and adjusted, adjustment is convenient and easy to implement, and daily overhaul and maintenance are facilitated.

Further, in order to avoid separation of the adjustment lever 32 from the adjustment seat 20, the adjustment lever 32 is fixed axially relative to the adjustment seat 20. Optionally, the adjusting rod 32 is provided with an annular limiting groove 322 between the adjusting end and the second tooth portion 321. The adjusting seat 20 is provided with a limiting hole 23 at a position corresponding to the limiting groove 322, and the limiting hole 23 is communicated with the adjusting hole. The adjusting member 30 further includes a limiting pin 33, and the limiting pin 33 penetrates the adjusting hole from the limiting hole 23 and is embedded in the limiting groove 322. Thereby, the adjustment lever 32 and the adjustment base 20 are fixed relative to each other. The limiting groove 322 is annular, which facilitates the fixing of the limiting pin 33 and the adjusting rod 32.

In one embodiment, one end of the limit pin 33 is provided with a spline, and the spline is in interference fit with the adjusting seat 20 to avoid separation of the limit pin 33 from the adjusting seat 20, so as to ensure relative fixation of the adjusting seat 20 and the adjusting rod 32.

In one embodiment, the support portions are recessed laterally inwardly to form a track, and the two support plates 12 are clamped to and slidable along the track. The supporting plate is guided by the sliding rail, so that the process of adjusting the tightness of the belt is more stable.

In one embodiment, the bottom end of the adjusting base 20 is provided with ear plates at two sides of the adjusting hole, and the ear plates are provided with fixing holes for inserting screws to fix the adjusting base 20 to an external structure (e.g., the hanger rail 400).

In one embodiment, a fastening hole 14 is formed at one end of the mounting plate 11 near the adjustment plate 13 for fastening the belt tensioner 100 to an external structure (e.g., the hanger rail 400) by passing a fastening screw therethrough.

As a second aspect, the present invention further relates to a belt driving structure, which includes a hanger rail 400, a motor 200, a driving wheel, a driven wheel 500, and a belt tensioning device 100, wherein the motor 200 is located outside the hanger rail 400, the driving wheel is connected to an output shaft of the motor 200 and is disposed in the hanger rail 400 together with the driven wheel 500, the belt 300 is connected between the driven wheel 500 and the driving wheel, and the belt tensioning device 100 is embedded in the hanger rail 400 and fixed to the hanger rail 400 through an ear plate. Therefore, when the tightness of the belt 300 needs to be adjusted, the adjusting rod 32 is clamped from the bottom end of the adjusting seat 20 by an adjusting tool, such as a wrench, the adjusting rod 32 is driven to rotate, the horizontal distance between the tensioning seat 10 and the adjusting seat 20 is adjusted, and the adjusting operation is convenient and easy to implement.

The foregoing description is only exemplary of the preferred embodiments of the utility model and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, and other embodiments can be made by combining the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features are replaced with (but not limited to) features having similar functions of the present invention.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

1. A belt tensioner for coupling with a driven wheel of a belt drive structure to cause the driven wheel to approach or be away from a drive wheel, comprising: the tensioning seat, the adjusting seat, the connecting rod and the adjusting rod are used for installing the driven wheel; the adjusting seat is provided with an accommodating cavity, and a abdicating hole and an adjusting hole which are communicated with the accommodating cavity, and the abdicating hole and the adjusting hole are vertical to each other; the connecting rod comprises a screw and a first tooth part connected to one end of the screw, the first tooth part is embedded in the accommodating cavity, and the screw penetrates out of the abdicating hole and is in threaded connection with the tensioning seat; the adjusting rod comprises an adjusting end and a second tooth part which are connected with each other, the second tooth part is arranged in the adjusting hole and meshed with the first tooth part, and the adjusting end is used for connecting an external tool to rotate to drive the first tooth part to rotate so as to realize axial movement of the screw rod.

2. The belt tensioner as in claim 1, wherein the first tooth is a crown gear.

3. The belt tensioner as in claim 1, wherein the adjustment lever has a limit groove between the adjustment end and the second tooth;

the adjusting seat is provided with a limiting hole at a position corresponding to the limiting groove, and the limiting hole is communicated with the adjusting hole;

the limiting pin penetrates into the adjusting hole from the limiting hole and is embedded in the limiting groove.

4. A belt tensioner as claimed in claim 3, wherein the retaining groove is annular.

5. The belt tensioner as in claim 3, wherein the stop pin has a spline on one end, and the spline is in interference fit with the adjustment seat.

6. The belt tensioner of claim 1, wherein the tensioning shoe comprises a mounting plate, an adjustment plate attached to one end of the mounting plate, and two support plates attached to either side of the mounting plate; the mounting plate is provided with a mounting hole for mounting a rotating shaft of the driven wheel in a penetrating way; the adjusting seat is provided with a supporting part, the two supporting plates are abutted to the supporting part, and the screw rod is connected with the adjusting plate.

7. The belt tensioner as in claim 6, wherein the support portion is recessed laterally inwardly toward the center to form a track, and the two support plates clamp the track and slide along the track.

8. The belt tensioner as in claim 6, wherein the bottom end of the adjustment seat is provided with fixing holes at two sides of the adjustment hole for inserting screws to fix the adjustment seat to an external structure.

9. The belt tensioner as in claim 6, wherein one end of the mounting plate protrudes from the support plate to form a mounting portion, and the mounting hole is formed in the mounting portion; the other end of the mounting plate is provided with a fastening hole for penetrating a fastening screw to tightly push the belt tensioning device to the external structure.

10. A belt drive structure, includes motor, hanger rail, action wheel, follows the driving wheel, around locating the action wheel and follow the hold-in range on the driving wheel to and belt tightener, the motor sets up in the outside of hanger rail, the action wheel all locates in the hanger rail with belt tightener, the action wheel is connected in the output shaft of motor, its characterized in that, belt tightener be any one in claims 1 to 9 belt tightener, rotationally connect in the tensioning seat from the driving wheel.