CN209511035U - A kind of stretcher - Google Patents
A kind of stretcher Download PDFInfo
- Publication number
- CN209511035U CN209511035U CN201822270353.XU CN201822270353U CN209511035U CN 209511035 U CN209511035 U CN 209511035U CN 201822270353 U CN201822270353 U CN 201822270353U CN 209511035 U CN209511035 U CN 209511035U
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- CN
- China
- Prior art keywords
- axis
- bolt
- swing arm
- pedestal
- cone tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
Abstract
The utility model discloses a kind of stretcher, comprising: pedestal；Being set on pedestal can the swing arm that swings of opposite base；Axis, by axis connection between swing arm and pedestal, swing arm can opposite base enclose and be pivoted, axis is equipped with through-hole；Belt wheel is rotatably mounted in swing arm；Elastic element, between pedestal and swing arm；Neck bush is set between the axis and swing arm；Bolt, bolt pass through the through-hole of axis, and axis is equipped with the cone tank positioned at through-hole one end, and bolt is equipped with tapered portion, and tapered portion is contained in cone tank and the tapered surface of tapered portion acts against on the tapered surface of cone tank.The utility model is by being arranged cone tank on axis and tapered portion being arranged on bolt, so as to increase the area that bolt is pressed against on axis, reduce pressure, component can be generated radially simultaneously, reduce axis in the axial direction by the size of power, so as to improve the stress condition of axis and bolt, guarantee the stability of its connection.
Description
Technical field
The utility model relates to car transmissions technical field more particularly to a kind of stretchers.
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 can be rotated around axis relative to pedestal, and low friction system is provided between axis and swing arm
Several 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；
The damping piece being set between the elastic element and the swing arm.As shown in Figure 1, it is existing stretcher, the stretcher
In axis include through-hole 81 and the groove 82 for being set to 81 one end of through-hole, the bottom surface of the groove 82 is plane, and bolt (is not schemed
Show) pass through the through-hole 81 when, bolt flange acts against on the bottom surface of groove 82, since bolt flange is contacted with 82 bottom surface of groove
Area it is small so that the pressure that bolt flange acts against on 82 bottom surface of groove is big, and the bottom surface of groove 82 with it is axially vertical so that
Bolt flange is pressed against the power on axis 8 and all concentrates in the axial direction, and the power for causing bolt to be applied on axis 8 is larger, leads to bolt
And axis 8 is easily damaged, and influences the stability of its structure.
To sum up, it is necessory to provide a kind of new stretcher.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of stretchers.
In order to solve the above technical problems, the utility model provides: a kind of stretcher, comprising: pedestal；It is set to the base
On seat can opposite base swing swing arm；Axis, by the axis connection between the swing arm and the pedestal, the swing arm can phase
Pedestal is rotated around the axis, the axis is equipped with through-hole；Belt wheel is rotatably mounted in swing arm；Elastic element is located at
Between pedestal and the swing arm, it to be used for bias swing arm；Neck bush is set between the axis and swing arm；Bolt, the bolt are worn
The through-hole of the axis is crossed, the axis is equipped with the cone tank positioned at described through-hole one end, and the bolt is equipped with tapered portion, described
Tapered portion is contained in the cone tank and the tapered surface of the tapered portion acts against on the tapered surface of the cone tank.
Preferably, the container positioned at one end is additionally provided on the axis, the cone tank is located at the container and leads to
Between hole, the container is communicated with the cone tank.
Preferably, flange portion is additionally provided on the bolt, the tapered portion is described between the bolt and flange portion
Flange portion is contained in the container.
Preferably, the bolt and the flange portion and tapered portion are integrally formed.
Preferably, the elastic element is helical spring.
The utility model has the beneficial effects that: cone tank is arranged on axis and in bolt for the utility model stretcher
Upper setting tapered portion, is acted against on the tapered surface of cone tank by the tapered surface of tapered portion, is increased bolt and is pressed against the face on axis
Product, and then can reduce pressure between the two, while component can be generated radially, reduce axis in the axial direction by power
Size guarantees the stability of its connection so as to improve the stress condition of axis and bolt.
Detailed description of the invention
Fig. 1 is that existing stretcher removes the sectional view after bolt；
Fig. 2 is that the utility model stretcher removes the sectional view after bolt；
Fig. 3 is the sectional view of the utility model stretcher shown in Fig. 2.
Specific embodiment
Clear and complete explanation is made to the utility model stretcher below with reference to Fig. 2 and Fig. 3.
As shown in Figures 2 and 3, the stretcher includes pedestal 1 and swing arm 2, and the swing arm 2 is installed on the pedestal 1,
It is connected between the swing arm 2 and the pedestal 1 by axis 6, the axis 6 has central axis, and the swing arm 2 can opposite base 1
Central axis around the axis 6 rotates, and the neck bush 5 of low-friction coefficient is equipped between the axis 6 and the pedestal 1.For passing
The belt wheel 3 of dynamic belt (not shown) is rotatably mounted in swing arm 2.Elastic element 4 between pedestal 1 and 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 swing arm 2 relative to pedestal 1 rotate.
Elastic element 4 can be to be a variety of, such as pressure spring, torsional spring etc., in a preferred embodiment of the utility model, elastic element
For helical spring.
As shown in Figures 2 and 3, the axis 6 is equipped with through-hole 63, the cone tank 62 positioned at described 63 one end of through-hole and receiving
Slot 61.The container 61 is rounded, and the cone tank 62 is tapered, and the container 61, cone tank 62 and through-hole 63 communicate.
As shown in Figures 2 and 3, the stretcher further includes a bolt 7, and the bolt 7 is equipped with tapered portion 72 and flange
Portion 71, the tapered portion 72 is between the bolt 7 and the flange portion 71, the bolt 7 and the tapered portion 72 and method
Blue portion 71 is integrally formed, and the tapered portion 72 is tapered.The bolt 7 passes through the through-hole 63, and the flange portion 71 is contained in
In the container 61, the tapered portion 72 is contained in the cone tank 62, and the tapered surface of the tapered portion 72 acts against
On the tapered surface of the cone tank 62, so as to increase the area that tapered portion 72 is contacted with the cone tank 62, reduce its pressure
By force, big to reduce the axial force that bolt 7 is pressed against on axis 6 and since the setting of taper can generate component radially
It is small, improve the stress of axis 6, keep its stress more balanced, prevents axis 6 and bolt 7 from damaging, guarantee the stability of its structure.
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 (5)
1. a kind of stretcher, comprising: pedestal；Being set on the pedestal can the swing arm that swings of opposite base；Axis, the swing arm with
By the axis connection between the pedestal, the swing arm can opposite base rotated around the axis, the axis is equipped with through-hole；
Belt wheel is rotatably mounted in swing arm；Elastic element is used for bias swing arm between pedestal and the swing arm；Bushing
Set, is set between the axis and swing arm；Bolt, the bolt pass through the through-hole of the axis, it is characterised in that: set on the axis
There is the cone tank positioned at described through-hole one end, the bolt is equipped with tapered portion, and the tapered portion is contained in the cone tank
And the tapered surface of the tapered portion acts against on the tapered surface of the cone tank.
2. stretcher according to claim 1, it is characterised in that: the container positioned at one end is additionally provided on the axis,
Between the container and through-hole, the container communicates the cone tank with the cone tank.
3. stretcher according to claim 2, it is characterised in that: be additionally provided with flange portion, the tapered portion on the bolt
Between the bolt and flange portion, the flange portion is contained in the container.
4. stretcher according to claim 3, it is characterised in that: the bolt and the flange portion and tapered portion one at
Type.
5. stretcher according to claim 4, it is characterised in that: the elastic element is helical spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822270353.XU CN209511035U (en) | 2018-12-22 | 2018-12-22 | A kind of stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822270353.XU CN209511035U (en) | 2018-12-22 | 2018-12-22 | A kind of stretcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209511035U true CN209511035U (en) | 2019-10-18 |
Family
ID=68198976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822270353.XU Active CN209511035U (en) | 2018-12-22 | 2018-12-22 | A kind of stretcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209511035U (en) |
-
2018
- 2018-12-22 CN CN201822270353.XU patent/CN209511035U/en active Active
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant |