CN209621978U - Stretcher for transmission system - Google Patents

Abstract

The utility model discloses a kind of stretcher for transmission system, comprising: pedestal；Being set on pedestal can the swing arm that swings of opposite base；Axis passes through axis connection between swing arm and pedestal；Belt wheel is rotatably mounted in swing arm；Elastic element is used for bias swing arm between pedestal and swing arm；Neck bush is set between axis and swing arm, and stretcher further includes the first supporting element being set on pedestal and the second supporting element being set in swing arm, and elastic element acts against respectively in the axial direction on the first supporting element and the second supporting element.The first supporting element and the second supporting element is respectively set by the both ends in elastic element axial direction in the utility model, prevent elastic element from directly contacting with pedestal made of metal material and swing arm, to which swing arm will not make to generate noise between elastic element and pedestal and swing arm during swing, and abrasion will not be generated to pedestal and swing arm, can effectively extend the service life of stretcher.

Description

Stretcher for transmission system

Technical field

The utility model relates to car transmissions technical fields, the more particularly, to stretcher of transmission system.

Background technique

Stretcher in automobile engine front end face belt drive system is mainly used for tightening belt, to keep belt suitable When tension, realize and dynamical stability and endlessly transmit.

Traditional stretcher generally includes: pedestal；The swing arm that can be swung on the base relative to pedestal is set；Axis, the axis It is mutually fixed with pedestal by interference fit, swing arm is rotated around axis relative to pedestal, and low-friction coefficient is provided between axis and swing arm Neck bush；The belt wheel being set in the swing arm；Elastic element between pedestal and swing arm, and is used for bias swing arm；If The damping piece being placed between the elastic element and the pedestal.In the stretcher course of work, since belt tension is continuous Variation, so that belt wheel and swing arm can constantly be swung, and the both ends of elastic element directly act against metal respectively in the axial direction In pedestal made of material and swing arm, the swing meeting of swing arm so that generate noise between elastic element and pedestal and swing arm, thus It will increase the noise of motor head musculus cutaneus belt transmission system entirety, and abrasion can be generated to pedestal and swing arm, be easy to cause Stretcher is scrapped in advance.

To sum up, it is necessory to provide a kind of new stretcher for transmission system.

Utility model content

The technical problem to be solved by the utility model is to provide the stretchers for transmission system.

In order to solve the above technical problems, the utility model provides:

A kind of stretcher for transmission system, comprising: pedestal；Being set on the pedestal can the pendulum that swings of opposite base Arm；Axis, by the axis connection between the swing arm and the pedestal, the swing arm can opposite base enclose and rotate about the axis thereof； Belt wheel is rotatably mounted in swing arm；Elastic element is used for bias swing arm, the use between pedestal and the swing arm In the stretcher of transmission system further include the first supporting element being set on the pedestal and be set in the swing arm second Supporting element, the elastic element act against respectively in the axial direction on the first supporting element and the second supporting element.

Preferably, the pedestal is equipped with container, and first supporting element is contained in the container.

Preferably, the outer circumference surface of first supporting element is equipped with protrusion, and the protrusion acts against pedestal inner peripheral surface Above and interfere.

Preferably, the pedestal is equipped with the first protruding portion, and first protruding portion is set to the pedestal Intranet circumferential surface On.

Preferably, the outer circumference surface of first supporting element is equipped with the face that abuts against, and first protruding portion, which is equipped with, to be limited Face, the face that abuts against act against in the qualified surface.

Preferably, the second protruding portion is additionally provided on the pedestal, first supporting element is equipped with through-hole, and described second is prominent Portion passes through the through-hole out.

Preferably, second protruding portion is configured to play the first supporting element the asymmetric shape of fool proof.

Preferably, the swing arm is equipped with buckle slot, and second supporting element is equipped with convex block, and the convex block is contained in institute It states in buckle slot.

Preferably, the convex block is equipped with interference part, and the interference part and the swing arm are interfered.

The utility model has the beneficial effects that: stretcher of the described the utility model for transmission system passes through in elasticity The first supporting element and the second supporting element is respectively set in both ends in element axial direction, avoids base made of elastic element and metal material Seat and swing arm directly contact, and being isolated for elastic element and pedestal and swing arm are realized, so that swing arm will not make during swing Generate noise between elastic element and pedestal and swing arm, and abrasion will not be generated to elastic element, pedestal and swing arm, can be with The effective service life for extending stretcher.

Detailed description of the invention

Fig. 1 is explosive view of the utility model for the stretcher of transmission system；

Fig. 2 is sectional view of the utility model shown in Fig. 1 for the stretcher of transmission system；

Fig. 3 is the utility model shown in Fig. 1 for the stretcher pedestal of transmission system and the perspective view of the first supporting element；

Fig. 4 is the utility model shown in Fig. 3 for the stretcher pedestal of transmission system and the explosive view of the first supporting element；

Fig. 5 is the utility model shown in Fig. 1 for the stretcher swing arm of transmission system and the perspective view of the second supporting element；

Fig. 6 is the utility model shown in Fig. 5 for the stretcher swing arm of transmission system and the explosive view of the second supporting element；

Fig. 7 is perspective view of the utility model shown in Fig. 6 for the second supporting element of stretcher of transmission system.

Specific embodiment

Stretcher below with reference to Fig. 1 to Fig. 7 to the utility model for transmission system makes clear and complete explanation.

As shown in Figures 1 to 7, the stretcher for transmission system includes pedestal 1 and swing arm 2, and the swing arm 2 is installed It on the pedestal 1, is connected between the swing arm 2 and the pedestal 1 by axis 6, the axis 6 has central axis, the pendulum Arm 2 can opposite base 1 rotate around the central axis of the axis 6, equipped with low-friction coefficient between the axis 6 and the pedestal 1 Neck bush 5.Belt wheel 3 for driving belt (not shown) is rotatably mounted in swing arm 2.Elastic element 4 be located at pedestal 1 with Between the swing arm 2, elastic element 4 be used for bias swing arm 2, under the collective effect of driving member such as belt so that 2 phase of swing arm Pedestal 1 is rotated.Elastic element 4 can be to be a variety of, such as pressure spring, torsional spring etc., in a preferred implementation of the utility model In mode, elastic element is helical spring.In other embodiments, axis can be with combination there are many swing arms 2 or pedestal 1. As axis can be fixed with alternative one connection, and with another relatively turnable connection；Or axis is respectively swing arm 2 and base A part of seat 1, to form connecting shaft with matching for pedestal 1 by swing arm 2.

As shown in Figures 3 and 4, the pedestal 1 is equipped with container 11, the first protruding portion 12 being set in container 11 And second protruding portion 13.First protruding portion 12 and the second protruding portion 13 can be integrally formed with the pedestal 1.In this implementation In example, first protruding portion 12 is set on 1 inner peripheral surface of pedestal, and first protruding portion 12 is equipped with qualified surface 121, the qualified surface 121 can be plane.Second protruding portion 13 is set at the center of the pedestal 1, and described second The asymmetric shape that pairs of first supporting element 7 plays foolproof function can be set in protruding portion 13, can also be designed to pair of not fool proof Claim shape.One end of the elastic element 4 is clamped between first protruding portion 12 and second protruding portion 13, so as to Fixed function is played to one end of elastic element 4.In other embodiments, first protruding portion 12 and second protruding portion 13 can be set integrally, for fixing one end of elastic element 4.

As shown in Figures 5 and 6, the swing arm 2 is equipped with third protruding portion 21 and several buckle slots 22.The third is prominent Portion 21 can be integrally formed with the swing arm 2, and the buckle slot 22 can be set one, and multiple, the card can also be arranged Catching groove 22 can be round, strip or other shapes.

As shown in Figures 1 to 7, the stretcher for transmission system further includes being set to elastic element 4 axial upper two First supporting element 7 and the second supporting element 8 at end.First supporting element 7 is between the elastic element 4 and the pedestal 1, Second supporting element 8 is between the elastic element 4 and the swing arm 2, to realize elastic element 4 and metal material system The pedestal 1 of work and the isolation of swing arm 2, reduce the generation of noise.

As shown in Figures 1 to 4, first supporting element 7, which is equipped with to be located on outer circumference surface, abuts against face 72, several protrusions 71 and through-hole 73 at its core.First supporting element 7 is contained in the container 11, and described raised 71 act against It on the inner peripheral surface of pedestal 1 and interferes, so that the first supporting element 7 to be fixed in container 11, prevents the first supporting element 7 It is shaken in pedestal 1.The face 72 that abuts against can be plane, when first supporting element 7 is contained in the container 11, institute The second protruding portion 13 is stated across the through-hole 73, the qualified surface 121 of first protruding portion 12 acts against the top of the first supporting element 7 On face 72, first protruding portion 12 can also prevent the first supporting element 7 from rotating in container 11, first supporting element 7 preferably plastic materials are made, and can also be made of other nonmetallic materials, so that elastic element 4 in the axial direction will not be direct It acts against on pedestal 1, realizes that elastic element 4 is isolated with pedestal 1 made of metal material, reduction noise, and can prevent pair Elastic element 4 and pedestal 1 generate abrasion.

As shown in Figures 5 to 7, second supporting element 8 can be arc-shaped, in other embodiments, described second Support member 8 can also be other shapes, and second supporting element 8 is equipped with several convex blocks 81, and the convex block 81 can be with described the Two supporting elements 8 are integrally formed, and the quantity of the convex block 81 is identical as the quantity of the buckle slot 22 and corresponds to each other, the convex block 81 are contained in the buckle slot 22, and the convex block 81 can be used for positioning second supporting element 8, and the convex block 81 is equipped with Interference part 811, the interference part 811 can be integrally formed with the convex block 81, and the convex block 81 is contained in the buckle slot 22 When interior, the interference part 811 is interfered with the swing arm 2, so that the second supporting element 8 to be fixed in swing arm 2, prevents the second support Part 8 shakes in swing arm 2 generates noise, and it can also be other non-gold that second supporting element 8, which is preferably that plastic material is made, Belong to material to be made, so that elastic element 4 realizes elastic element 4 and metal material in the axial direction without acting directly against in swing arm 2 The isolation of manufactured swing arm 2 reduces noise, and can prevent from generating abrasion to elastic element 4 and swing arm 2.

As shown in Figures 1 to 7, the elastic element 4 acts against the first supporting element 7 and the second supporting element respectively in the axial direction On 8, so as to prevent elastic element 4 from acting directly against on pedestal 1 and swing arm 2 made of metal material, elastic element 4 is realized With being isolated for pedestal 1 made of metal material and swing arm 2, to reduce noise, prevent to elastic element 4, pedestal 1 and swing arm 2 Generate abrasion.

Above-mentioned technical proposal is only the explanation to the utility model embodiment, is not limitation of the utility model, and all The equivalent variation that field technical staff creation according to the present utility model is carried out belongs to the protection scope of the utility model.

Claims (9)

1. a kind of stretcher for transmission system, comprising: pedestal；Being set on the pedestal can the pendulum that swings of opposite base Arm；Axis, by the axis connection between the swing arm and the pedestal, the swing arm can opposite base enclose and rotate about the axis thereof； Belt wheel is rotatably mounted in swing arm；Elastic element is used for bias swing arm, feature between pedestal and the swing arm Be: the stretcher for transmission system further includes the first supporting element being set on the pedestal and is set to the pendulum The second supporting element on arm, the elastic element act against respectively in the axial direction on the first supporting element and the second supporting element.

2. the stretcher according to claim 1 for transmission system, it is characterised in that: the pedestal is equipped with receiving Slot, first supporting element are contained in the container.

3. the stretcher according to claim 2 for transmission system, it is characterised in that: the outer circle of first supporting element Circumferential surface is equipped with protrusion, and the protrusion is acted against on pedestal inner peripheral surface and interfered.

4. the stretcher according to claim 3 for transmission system, it is characterised in that: it is prominent that the pedestal is equipped with first Portion out, first protruding portion are set on the pedestal inner peripheral surface.

5. the stretcher according to claim 4 for transmission system, it is characterised in that: the outer circle of first supporting element Circumferential surface is equipped with the face that abuts against, and first protruding portion is equipped with qualified surface, and the face that abuts against acts against in the qualified surface.

6. being used for the stretcher of transmission system according to any one of claim 2 to 5, it is characterised in that: the pedestal On be additionally provided with the second protruding portion, first supporting element is equipped with through-hole, and second protruding portion passes through the through-hole.

7. the stretcher according to claim 6 for transmission system, it is characterised in that: second protruding portion is set Pairs of first supporting element plays the asymmetric shape of fool proof.

8. the stretcher according to claim 1 for transmission system, it is characterised in that: the swing arm is equipped with buckle Slot, second supporting element are equipped with convex block, and the convex block is contained in the buckle slot.

9. the stretcher according to claim 8 for transmission system, it is characterised in that: the convex block is equipped with interference Portion, the interference part and the swing arm are interfered.