WO2021031610A1

WO2021031610A1 - Tensioning regulator and synchronous belt transmission device

Info

Publication number: WO2021031610A1
Application number: PCT/CN2020/087899
Authority: WO
Inventors: 张海俊
Original assignee: 南京协辰电子科技有限公司
Priority date: 2019-08-16
Filing date: 2020-04-29
Publication date: 2021-02-25
Also published as: CN210830346U

Abstract

A tensioning regulator and a synchronous belt transmission device. The tensioning regulator comprises a mounting regulation assembly, comprising a mounting regulation body; a tensioning regulation assembly, comprising a tensioning connection member (31), a tensioning action member (32) and an elastic member (33), the tensioning connection member (31) being sleeved on the tensioning action member (32), the elastic member (33) being provided in the tensioning connection member (31) and abutting against and acting on the tensioning action member (32), the mounting regulation body being movably connected to the tensioning connection member (31); and an anti-retraction assembly. Since there is a deviation in the mounting position for mounting the tensioning regulator during the production and manufacturing process, by providing the mounting regulation body, the length of the tensioning regulator can be adjusted, so as to adapt to the deviation; by providing the tensioning regulation assembly, the elastic member (33) can automatically extend to provide an elastic force so as to ensure that a tensioning wheel (123) provides a proper tensioning force to a synchronous belt (122); and by providing the anti-retraction assembly, the tensioning regulation assembly is prevented from retracting in a direction away from the anti-retraction assembly, thereby ensuring that a proper tensioning force can be provided.

Description

A tension regulator and a synchronous belt transmission device

Technical field

The utility model relates to the technical field of belt transmission, in particular to a tension regulator and a synchronous belt transmission device.

Background technique

In the field of mechanical transmission technology, belt transmission is widely used in shaft spacing and power transmission between multiple shafts due to its simple structure, stable transmission, cushioning and vibration absorption, etc., and the synchronous belt transmission is due to its combination with pulleys during transmission. There is no relative sliding between them, and it has the advantages of constant transmission ratio, accurate transmission and high transmission efficiency. It is more widely used in mechanical transmission.

Because the timing belt is under the action of pre-tightening force, after a period of operation, it will be deformed or worn and loosened, which will reduce the initial tension; in order to ensure the normal operation of the belt or chain transmission, a tensioner is usually used to remove it. Tension, and need to adjust its tension frequently.

The prior art discloses a tensioner, which includes a spring. Under the action of the spring, the abutting end of the tensioner can be driven to adaptively abut against the timing belt to automatically adjust the tension of the timing belt. However, due to the deviation of the installation position of the tensioner in the manufacturing process of the above-mentioned tensioner, it is easy to cause the installation of the tensioner to fail.

Utility model content

Therefore, the technical problem to be solved by the present utility model is to overcome the defect that the prior art requires a higher installation position for installing the tensioner, thereby providing a tension adjuster.

A tension regulator includes:

Installation adjustment assembly, which includes installation adjustment body;

The tension adjusting assembly includes a tension connecting piece, a tensioning member and an elastic piece, the tension connecting piece is sleeved on the tensioning piece, the elastic piece is arranged in the tensioning connecting piece and Abut against the tensioning member, wherein the installation adjustment body is movably connected to the tensioning connecting member;

A shrink-proof assembly, which includes a ratchet assembly, the ratchet assembly includes a first ratchet and a second ratchet arranged in mesh with each other, the first ratchet is provided on the rotating mounting member, the second ratchet is provided On the tensioning member, the rotating mounting member is rotatably connected to the tensioning connecting member.

Further, the anti-shrink assembly further includes a force applying member, the force applying member is fixed on the tension connecting member, and abuts against the rotating mounting member to make the first ratchet meshingly connected于The second ratchet.

Further, a waist hole is provided on the installation adjusting body, and the waist hole and the tension connecting member are connected by a fastener.

Further, the installation adjustment assembly further includes a guide groove and a guide protrusion, the guide protrusion is located in the guide groove, wherein the guide groove is provided in both the installation adjustment body and the tension connector On the one hand, the guide protrusion is provided on the other of the installation adjusting body and the tension connecting member.

Further, the installation adjustment assembly further includes an auxiliary locking member, the auxiliary locking member is fixed on the tension connecting member and assists in locking the installation adjustment along the movement direction of the tensioning member Ontology.

Further, the tension adjustment assembly further includes a tension connection cover, the tension connection cover is arranged at the end of the tension connection member close to the installation adjustment body, the tension connection cover, the tension connection cover A accommodating space for accommodating the elastic member is formed between the tight connection member and the tension member.

Further, the tension connection cover is provided with a first positioning member, an end of the tensioning member is provided with a second positioning member, and two ends of the elastic member are respectively sleeved on the first positioning member And the second positioning member, and respectively abut against the tension connecting cover and the tension member.

Further, the anti-shrink assembly further includes a rotating mounting cover, which is fixed on the tension connecting member to restrict the rotating mounting member from moving in a direction away from the tensioning member.

A synchronous belt transmission device includes:

Base frame

Set on the base frame:

A pulley transmission assembly, which includes a pulley, a timing belt, and a tension pulley, the pulley is fixed on the base frame, the timing belt is sleeved on the pulley, and the tension pulley abuts On the synchronous belt;

The tension adjuster as mentioned above;

A rotating pendulum includes a first mounting end arm and a second mounting end arm arranged at an angle, the tensioning member is arranged on the first mounting end arm, and the tensioning wheel is arranged on the second mounting On the end arm.

Further, the force arm from the installation location of the tensioning member on the first mounting end arm to the rotation center of the rotating pendulum is greater than the rotation center of the tensioning wheel to the rotation center of the rotating pendulum Force arm.

The technical scheme of the utility model has the following advantages:

1. A tension adjuster provided by the present utility model includes: an installation adjustment assembly, which includes an installation adjustment body; a tension adjustment assembly, which includes a tension connection piece, a tension action piece and an elastic piece, the tension The connecting member is sleeved on the tensioning member, the elastic member is provided in the tensioning connecting member and abutting on the tensioning member, wherein the installation adjusting body is movably connected to the tensioning member Connector; shrink-proof assembly, which includes a ratchet assembly, the ratchet assembly includes a first ratchet and a second ratchet arranged in mesh with each other, the first ratchet is provided on the rotating mounting member, the second The ratchet is provided on the tensioning member, wherein the rotating mounting member is rotatably connected to the tensioning connecting member. A tension regulator of this structure, due to the deviation in the installation position of the tension regulator during the manufacturing process, by providing the installation adjustment body, the length of the tension regulator can be adjusted to adapt to this deviation; Equipped with a tension adjustment component, the elastic member can automatically extend to provide elasticity to ensure that the tensioning wheel provides suitable tension to the timing belt to ensure the normal operation of the timing belt; the shrink-proof component is provided to avoid the tension adjustment component Retract in the direction away from the shrink-proof component to ensure that it can provide proper tension.

2. A tension adjuster provided by the present invention, the shrink-proof assembly further includes a force applying member, the force applying member is fixed on the tension connecting member, and abutting on the rotating installation To make the first ratchet tooth meshingly connected to the second ratchet tooth. A tension adjuster of this structure is provided with a force applying member, which applies force to the tensioning member to ensure that the first ratchet tooth is engaged with the second ratchet tooth.

3. A tension adjuster provided by the present invention, the installation adjustment assembly further includes a guide groove and a guide protrusion, the guide protrusion is located in the guide groove, wherein the guide groove is provided in the installation The adjusting body and the tension connecting piece are on one of them, and the guide protrusions are provided on the other of the mounting adjusting body and the tension connecting piece. A tension adjuster of this structure is provided with guide grooves and guide protrusions, which is convenient for positioning and installing the adjusting body on the tension connecting piece.

4. A tension adjuster provided by the present invention, the installation adjustment assembly further includes an auxiliary locking member, the auxiliary locking member is fixed on the tension connecting member, and along the tension The movement direction of the piece assists in locking the installation adjusting body. A tension adjuster of this structure is provided with an auxiliary locking member, and the auxiliary locking position is installed and the adjusting body is installed on the tension connecting member.

5. The utility model provides a tension adjuster, the tension adjustment assembly further includes a tension connection cover, the tension connection cover is provided at the end of the tension connection near the installation adjustment body A accommodating space for accommodating the elastic member is formed between the tension connection cover, the tension connection member and the tension action member. A tension adjuster of this structure is provided with a tension connection cover, and by taking out the tension connection cover, the elastic member can be placed in the accommodating space, which is convenient to install and adjust the state of the elastic member in the accommodating space.

6. A tension adjuster provided by the present utility model, the tension connecting cover is provided with a first positioning member, the end of the tensioning member is provided with a second positioning member, two of the elastic member The ends are respectively sleeved on the first positioning member and the second positioning member, and respectively abut against the tension connecting cover and the tensioning member. A tension adjuster of this structure is provided with a first positioning member and a second positioning member to facilitate positioning and installation of the elastic member.

7. A synchronous belt transmission device provided by the present utility model includes: a base frame; a pulley transmission assembly arranged on the base frame, which includes a pulley, a timing belt and a tensioning wheel, the pulley is fixed Set on the base frame, the timing belt is sleeved on the pulley, the tensioning wheel abuts on the timing belt; the tension adjuster as described above; the rotating pendulum includes an angular setting The first mounting end arm and the second mounting end arm are provided on the first mounting end arm, and the tensioning wheel is provided on the second mounting end arm. Since a synchronous belt transmission device of this structure includes the above-mentioned tension adjuster, it naturally has all the advantages brought about by including the above-mentioned tension adjuster.

8. A timing belt transmission device provided by the present utility model, wherein the arm of the tension member from the installation position of the first mounting end arm to the rotation center of the rotating pendulum is larger than that of the tension wheel A force arm from the center of rotation to the center of rotation of the rotating pendulum. A kind of synchronous belt transmission device of this structure, through the above arrangement, the tension adjuster can provide a smaller force so that the tension wheel can provide a larger tension force to the synchronous belt, which is very labor-saving.

Description of the drawings

In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the specific embodiments or the description of the prior art. Obviously, in the following description The drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative work, other drawings can be obtained from these drawings.

Figure 1 is a schematic structural diagram of a synchronous belt transmission device provided in an embodiment of the utility model;

Fig. 2 is a schematic structural diagram of the tension adjuster shown in Fig. 1;

Figure 3 is a front view of the tension adjuster shown in Figure 2;

Figure 4 is an exploded schematic diagram of the tension regulator shown in Figure 2 (the picture has been rotated 90° to the right);

FIG. 5 is a partial enlarged view showing the force applying member, the tension connecting member, the rotating mounting member and the rotating mounting cover shown in FIG. 4;

Fig. 6 is a partial enlarged view of the tension adjuster shown in Fig. 2 without showing the tension connector;

Fig. 7 is a schematic structural diagram of the tension connection shown in Fig. 4;

Figure 8 is a schematic structural diagram of the tensioning member shown in Figure 4;

Description of reference signs:

11- base frame, 121- pulley, 122- timing belt, 123- tensioning wheel, 13- rotating pendulum, 131- first mounting end arm, 132- second mounting end arm;

211-U-shaped installation adjustment piece, 2111-waist hole, 212-installation adjustment pivot piece, 22-mounting seat, 23-guide protrusion, 24-auxiliary locking piece;

31-tension connecting piece, 311-second installation groove, 312-installation opening groove, 32-tensioning member, 321-second positioning piece, 322-pivot hole, 323-bearing, 324-first installation groove , 33-elastic member, 34-tension connecting cover, 341-first positioning member;

41-rotational mounting member, 411-first ratchet, 42-ratchet rack, 421-second ratchet, 43-force member, 44-rotational mounting cover;

5-Pivot mounting shaft.

detailed description

The technical solution of the present utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship of other indications is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation and The azimuth structure and operation of, therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or an option. Detachable connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present utility model can be understood under specific circumstances.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Example

This embodiment provides a synchronous belt transmission device as shown in FIG. 1, which includes a base frame 11, a pulley transmission assembly, a tension adjuster as shown in FIGS. 2 to 8 and a rotating pendulum 13. Among them, the pulley transmission assembly, the tension adjuster and the rotating pendulum 13 are all arranged on the base frame 11. Specifically, the pulley transmission assembly includes a pulley 121, a timing belt 122, and a tension pulley 123. The pulley 121 is fixed on the base frame 11, the timing belt 122 is sleeved on the pulley 121, and the tension pulley 123 abuts against Timing belt 122; rotating pendulum 13, which includes angled first mounting end arm 131 and second mounting end arm 132, the tension adjuster is provided on the first mounting end arm 131, and the tension wheel 123 is provided on the second Install on the end arm 132. As shown in Figure 1, the length of the first mounting end arm 131 is much greater than the length of the second mounting end arm 132, so that the tensioning member 32 is mounted on the first mounting end arm 131 to the center of rotation of the rotating pendulum 13 The force arm of is larger than the force arm from the rotation center of the tension wheel 123 to the rotation center of the rotating rocker 13. Through the above arrangement, the tension adjuster can provide a small force to enable the tension wheel 123 to provide a large tension force to the timing belt 122, which is very labor-saving.

As shown in Figures 2 to 4, a tension adjuster in this embodiment includes a mounting adjustment component, a tension adjustment component and an anti-shrink component. The installation adjustment component is movably connected to the tension adjustment component to adjust the length of the full adjuster, and the anti-shrink component is connected to the tension adjustment component to prevent the tension adjustment component from retracting away from the anti-shrink component.

As shown in FIGS. 2 and 4, the installation adjustment assembly includes an installation adjustment body, a mounting seat 22, a guide groove, a guide protrusion 23 and an auxiliary locking member 24. The installation adjustment body includes a U-shaped installation adjustment piece 211 and an installation adjustment pivot piece 212. The U-shaped installation adjustment piece 211 is provided with a waist hole 2111, which is connected to the waist hole 2111 and the tension adjustment assembly by a fastener; the mounting seat 22 pivots Is connected to the installation adjustment pivot member 212, and the installation seat 22 is fixed on the base frame 11, wherein the installation adjustment pivot member 212 is fixed on the U-shaped installation adjustment member 211; the guide protrusion 23 is located in the guide groove, wherein the guide The groove is provided on one of the installation adjustment body and the tension connecting member 31, and the guide protrusion 23 is provided on the other of the installation adjustment body and the tension connection member 31. Specifically, in this embodiment, the guide groove is provided on On the installation adjustment body, the guide protrusion 23 is arranged on the tension adjustment assembly. By providing the guide groove and the guide protrusion 23, it is convenient to locate and install the adjusting body on the tension connector 31. The auxiliary locking member 24 is fixed on the installation protrusion of the tension connecting member 31 and abuts against the installation adjustment body along the movement direction of the tension adjustment assembly to assist in locking the installation adjustment body. By providing the auxiliary locking member 24, the adjusting body is installed and installed on the tension connecting member 31 in an auxiliary locking position.

As shown in FIG. 4, the tension adjustment assembly includes a tension connection piece 31, a tension action piece 32, an elastic piece 33, and a tension connection cover 34. The tension connection piece 31 is sleeved on the tension action piece 32, and the elastic piece 33 It is arranged in the tension connecting member 31 and abuts against the tension member 32. Specifically, the elastic member 33 may be a spring or others. As shown in FIGS. 2 and 3, the U-shaped installation adjusting member 211 is sleeved on the tension connecting member 31, and the waist hole 2111 and the tension connecting member 31 are connected by a fastener.

The tension connection cover 34 in this embodiment is arranged in the installation hole of the tension connection piece 31 near the end of the installation adjustment body. Specifically, the two can be connected by a thread. The tension connection cover 34 and the tension connection piece 31 An accommodating space for accommodating the elastic member 33 is formed between the tension member 32 and the tension member 32. The tension connection cover 34 is provided with a first positioning member 341 as shown in FIG. 7, and the end of the tensioning member 32 close to the tension connection member 31 is provided with a second positioning member 321 as shown in FIG. The two ends of the two are respectively sleeved on the first positioning member 341 and the second positioning member 321, and respectively abut against the tension connecting member 31 and the tension member 32. As an alternative embodiment, the tension connecting cover 34 may not be provided, that is, the end of the adjusting body is not provided with a mounting hole, and one end of the elastic member 33 abuts against the end of the tension connecting member 31 The inner wall surface. As shown in Figures 1 and 2, the end of the tensioning member 32 away from the tensioning connecting member 31 is provided with a pivot hole 322. The pivot hole 322 is pivotally connected to the swing member 13, wherein the pivot hole 322 can be provided There are bearings 323.

By providing the tension connection cover 34 and by taking out the tension connection cover 34, the elastic member 33 can be placed in the accommodating space, which facilitates installation and adjustment of the state of the elastic member 33 in the accommodating space. By providing the first positioning member 341 and the second positioning member 321, the elastic member 33 is easily positioned and installed.

In this embodiment, the shrink-proof assembly includes a ratchet assembly, a force applying member 43 and a rotating mounting cover 44. The ratchet assembly includes a first ratchet tooth 411 and a second ratchet tooth 421 that are arranged in mesh with each other. The first ratchet tooth 411 is arranged at On the rotating mounting member 41, the ratchet rack 42 is provided with a plurality of second ratchet teeth 421, and the ratchet rack 42 can be fixed to the tensioning member 32 by fasteners or bonding methods.内槽324。 Slot 324. The rotating mounting member 41 is rotatably connected to the tension connecting member 31.

4 and 5, the rotating mounting member 41 is located in the mounting opening groove 312 at the end of the tension connecting member 31, and the pivotal mounting shaft 5 penetrates through the rotating mounting member 41 to overlap the tension connecting member 31 In the second installation groove 311. The rotating mounting cover 44 is fixed on the tension connecting piece 31, and is covered on the rotating mounting piece 41 to restrict the rotating mounting piece 41 from moving in a direction away from the tensioning member 32, wherein the rotating mounting piece 41 is correspondingly arranged to accommodate The third installation groove of the pivotal installation shaft 5 is connected. As shown in FIGS. 5 and 6, the urging member 43 is fixed on the tension connecting member 31 and abuts against the rotating mounting member 41 so that the first ratchet tooth 411 is engaged with the second ratchet tooth 421. Specifically, the force applying member 43 may be a spring sheet. By providing the force applying member 43, the force applying member 43 applies force to the tension member 32 to ensure that the first ratchet tooth 411 is engaged with the second ratchet tooth 421.

When the timing belt 122 has been running for a period of time, and the tensioning force provided by the tensioning wheel 123 to the timing belt 122 is less than the tensioning force required by the timing belt 122, the end of the elastic member 33 close to the tension member 32 will approach The direction of the tensioning member 32 extends to act on the tensioning member 32, the tensioning member 32 drives the rotating pendulum 13 to rotate, and the tensioning wheel 123 moves toward the direction close to the timing belt 122 to provide greater tension for the synchronization The belt 122 ensures that the timing belt 122 obtains the required tension to run smoothly. During the operation of the timing belt 122, especially when the timing belt 122 starts and stops instantaneously, the shrink-proof assembly prevents the elastic member 33 from retracting.

The tension adjuster of the utility model has a deviation in the installation position of the tension adjuster during the manufacturing process, and the length of the tension adjuster can be adjusted by the installation adjustment body to adapt to this deviation; By providing a tension adjustment assembly, the elastic member 33 can be automatically extended to provide elastic force to ensure that the tensioning wheel 123 provides a proper tension force to the timing belt 122, ensuring the normal operation of the timing belt 122; Avoid retracting the tension adjustment component away from the anti-shrink component to ensure that a proper tension can be provided.

Obviously, the above-mentioned embodiments are merely examples for clear description, and are not intended to limit the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is unnecessary and impossible to list all implementation methods here. The obvious changes or modifications derived from this are still within the protection scope of the invention.

Claims

A tension regulator, characterized in that it comprises:

Installation adjustment assembly, which includes installation adjustment body;

The tension adjusting assembly includes a tension connecting piece, a tensioning member and an elastic piece, the tension connecting piece is sleeved on the tensioning piece, the elastic piece is arranged in the tensioning connecting piece and Abut against the tensioning member, wherein the installation adjustment body is movably connected to the tensioning connecting member;

A shrink-proof assembly, which includes a ratchet assembly, the ratchet assembly includes a first ratchet and a second ratchet arranged in mesh with each other, the first ratchet is provided on the rotating mounting member, the second ratchet is provided On the tensioning member, the rotating mounting member is rotatably connected to the tensioning connecting member.
The tension adjuster according to claim 1, wherein the anti-shrink component further comprises a force applying member, the force applying member is fixed on the tension connecting member and abuts against The rotating mounting member makes the first ratchet tooth meshingly connected to the second ratchet tooth.
The tension adjuster according to claim 2, wherein a waist hole is provided on the installation adjusting body, and the waist hole and the tension connecting piece are connected by a fastener.
The tension adjuster according to claim 3, wherein the installation adjustment assembly further comprises a guide groove and a guide protrusion, the guide protrusion is located in the guide groove, wherein the guide groove is provided On one of the installation adjustment body and the tension connection piece, the guide protrusion is provided on the other of the installation adjustment body and the tension connection piece.
The tension adjuster according to claim 4, wherein the installation adjustment assembly further comprises an auxiliary locking member, and the auxiliary locking member is fixed on the tension connecting member and extends along the The movement direction of the tensioning member assists in locking the installation adjustment body.
The tension adjuster according to any one of claims 1 to 5, wherein the tension adjustment assembly further comprises a tension connection cover, and the tension connection cover is provided on the tension connection The member is close to the end of the installation adjustment body, and a containing space for accommodating the elastic member is formed between the tension connection cover, the tension connection member and the tension member.
The tension adjuster according to claim 6, wherein a first positioning member is provided in the tension connection cover, and a second positioning member is provided at an end of the tensioning member, and Two ends of the elastic member are respectively sleeved on the first positioning member and the second positioning member, and respectively abut against the tension connecting cover and the tension member.
The tension adjuster according to claim 7, wherein the shrink-proof assembly further comprises a rotating mounting cover, which is fixed on the tension connecting member to limit the orientation of the rotating mounting member Move away from the tensioning member.
A synchronous belt transmission device is characterized by comprising:

Base frame

Set on the base frame:

A pulley transmission assembly, which includes a pulley, a timing belt, and a tension pulley, the pulley is fixed on the base frame, the timing belt is sleeved on the pulley, and the tension pulley abuts On the synchronous belt;

The tension adjuster according to any one of claims 1 to 8;

A rotating pendulum includes a first mounting end arm and a second mounting end arm arranged at an angle, the tensioning member is arranged on the first mounting end arm, and the tensioning wheel is arranged on the second mounting On the end arm.
The timing belt transmission device according to claim 9, wherein the moment arm from the installation position of the tensioning member on the first mounting end arm to the rotation center of the rotating pendulum is larger than that of the A force arm from the rotation center of the tension wheel to the rotation center of the rotating pendulum.