CN210290621U - Chain tensioner - Google Patents
Chain tensioner Download PDFInfo
- Publication number
- CN210290621U CN210290621U CN201921076090.7U CN201921076090U CN210290621U CN 210290621 U CN210290621 U CN 210290621U CN 201921076090 U CN201921076090 U CN 201921076090U CN 210290621 U CN210290621 U CN 210290621U
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- CN
- China
- Prior art keywords
- cylinder body
- plunger rod
- plunger
- oil inlet
- channel
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a chain rises and tightly rises ware, including the installation base, its characterized in that: the mounting base is provided with a cylinder body, the cylinder body is provided with a plunger channel, a plunger rod capable of moving axially is arranged in the plunger channel in a matching manner, a mounting cavity is arranged in the plunger rod, the mounting cavity penetrates through the lower end of the plunger rod, a compression spring is arranged in the mounting cavity, the upper end of the spring is abutted against the upper wall of the mounting cavity, the lower end of the spring is abutted against the bottom of the plunger channel, the outer peripheral surface of the middle part of the plunger rod is provided with a one-way rack which is arranged axially, the upper part of the corresponding side wall of the cylinder body is provided with a mounting opening, a tooth block is arranged in the; the hydraulic oil inlet channel is arranged at the bottom of the cylinder body, the oil inlet is arranged at the bottom of the plunger channel, the hydraulic oil inlet channel is communicated with the oil inlet, and the check valve is arranged at the oil inlet. The utility model discloses rational in infrastructure, tight stability rises.
Description
Technical Field
The utility model relates to an improvement of a tension device, in particular to an improvement of a chain tension device.
Background
The chain tensioner acts on a timing belt or a timing chain of an engine to guide and tension the timing belt or the timing chain, so that the timing belt or the timing chain is always in an optimal tension state.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome prior art not enough, provide a rational in infrastructure, reliable and stable chain rises and tightly installs.
In order to solve the technical problem, the utility model discloses an adopt following technical scheme to realize: the chain tensioner comprises an installation base and is characterized in that: the mounting base is provided with a cylinder body, the cylinder body is provided with a plunger channel, a plunger rod capable of moving axially is arranged in the plunger channel in a matching manner, a mounting cavity is arranged in the plunger rod, the mounting cavity penetrates through the lower end of the plunger rod, a compression spring is arranged in the mounting cavity, the upper end of the spring is abutted against the upper wall of the mounting cavity, the lower end of the spring is abutted against the bottom of the plunger channel, the outer peripheral surface of the middle part of the plunger rod is provided with a one-way rack which is arranged axially, the upper part of the corresponding side wall of the cylinder body is provided with a mounting opening, a tooth block is arranged in the; the bottom of the cylinder body is provided with a hydraulic oil inlet flow passage, the bottom of the plunger passage is provided with an oil inlet, the hydraulic oil inlet flow passage is communicated with the oil inlet, and the oil inlet is provided with a one-way valve; and an annular groove is formed in the outer peripheral surface of the upper end of the plunger rod, a positioning needle is movably arranged on the corresponding oil cylinder in a penetrating mode, and the positioning needle is in limit fit with the annular groove.
The outer peripheral surface of the middle part of the plunger rod is also provided with an axial movement guide groove, and the upper part of the corresponding cylinder body side wall is provided with a guide pillar stretching into the guide groove.
And the tail end of the positioning needle is provided with a pull ring.
The mounting base and the cylinder body are integrally formed.
The beneficial effects of the utility model are that the chain after the improvement rises and tightly rises ware, rational in infrastructure, reliable and stable adopts oil pressure and mechanical two kinds of modes simultaneously to act on the plunger rod, and the reinforcing rises and tightly the dynamics.
Drawings
The following describes the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a structural sectional view of the present invention.
Detailed Description
The drawings show the structure of the present invention, and the details thereof will be further described with reference to the drawings. The chain tensioner comprises an installation base 1, a cylinder body 2 is integrally formed on the installation base 1, a plunger channel 3 is arranged on the cylinder body 2, a plunger rod 4 capable of moving axially is arranged in the plunger channel 3 in a matching mode, an installation cavity 5 is arranged in the plunger rod 4, the installation cavity 5 penetrates through the lower end of the plunger rod 4, a compression spring 6 is arranged in the installation cavity 5, the upper end of the spring 6 abuts against the upper wall of the installation cavity 5, the lower end of the spring 6 abuts against the bottom of the plunger channel 3, a one-way rack 7 arranged axially is arranged on the outer peripheral surface of the middle part of the plunger rod 4, an installation opening 8 is arranged on the upper portion of the corresponding side wall of the cylinder body 2, a tooth block 9 is arranged in the installation opening 8, the tooth block 9 is meshed with the one-way rack 7, an elastic pressing sheet 10 for pressing the tooth block; the bottom of the cylinder body 2 is provided with a hydraulic oil inlet flow passage 11, the bottom of the plunger channel 3 is provided with an oil inlet 12, the hydraulic oil inlet flow passage 11 is communicated with the oil inlet 12, and the oil inlet 12 is provided with a one-way valve 13, so that the hydraulic oil can enter the plunger channel 3 in a one-way manner; the outer peripheral surface of the upper end of the plunger rod 4 is provided with an annular groove 14, a positioning needle 15 is movably arranged on the corresponding oil cylinder in a penetrating mode, the positioning needle 15 is in limit fit with the annular groove 14, and the tail end of the positioning needle 15 is provided with a pull ring which is convenient for the positioning needle 15 to be pulled out of the oil cylinder and releases the limit of the plunger rod 4.
The outer peripheral surface of the middle part of the plunger rod 4 is also provided with an axial moving guide groove 16, and the upper part of the corresponding side wall of the cylinder body 2 is provided with a guide post 17 extending into the guide groove. For guiding the axial movement of the plunger rod 4 and preventing the plunger rod 4 from rotating within the plunger channel 3.
The utility model discloses the during operation, with the installation of chain tensioner in place, pull out locating pin 15, remove 4 axial displacement's of plunger rod spacing, along with timing belt or timing chain not hard up, hydraulic oil in the engine gets into runner 11 through hydraulic oil, oil inlet 12, check valve 13 gets into in the installation cavity 5 of plunger rod 4, promote the outside axial displacement of plunger rod 4, compression spring 6 also drives the outside axial displacement of plunger rod 4 simultaneously, the plunger rod 4 that moves axially outward, 7 drive tooth pieces 9 of one-way rack on it overcome elasticity preforming 10 and move outward, because of the one-way setting of rack, tooth piece 9 can restrict 7 backword of one-way rack again under the effect of elasticity preforming 10, make plunger rod 4 only can follow 3 interior axial excursions of plunger channel, and unable axial excursions, with this stable effectual tight belt or chain that rises.
In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. Chain tensioner, including the installation base, its characterized in that: the mounting base is provided with a cylinder body, the cylinder body is provided with a plunger channel, a plunger rod capable of moving axially is arranged in the plunger channel in a matching manner, a mounting cavity is arranged in the plunger rod, the mounting cavity penetrates through the lower end of the plunger rod, a compression spring is arranged in the mounting cavity, the upper end of the spring is abutted against the upper wall of the mounting cavity, the lower end of the spring is abutted against the bottom of the plunger channel, the outer peripheral surface of the middle part of the plunger rod is provided with a one-way rack which is arranged axially, the upper part of the corresponding side wall of the cylinder body is provided with a mounting opening, a tooth block is arranged in the; the bottom of the cylinder body is provided with a hydraulic oil inlet flow passage, the bottom of the plunger passage is provided with an oil inlet, the hydraulic oil inlet flow passage is communicated with the oil inlet, and the oil inlet is provided with a one-way valve; and an annular groove is formed in the outer peripheral surface of the upper end of the plunger rod, a positioning needle is movably arranged on the corresponding oil cylinder in a penetrating mode, and the positioning needle is in limit fit with the annular groove.
2. The chain tensioner as claimed in claim 1, wherein: the outer peripheral surface of the middle part of the plunger rod is also provided with an axial movement guide groove, and the upper part of the corresponding cylinder body side wall is provided with a guide pillar stretching into the guide groove.
3. The chain tensioner as claimed in claim 1, wherein: and the tail end of the positioning needle is provided with a pull ring.
4. The chain tensioner as claimed in claim 1, wherein: the mounting base and the cylinder body are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921076090.7U CN210290621U (en) | 2019-07-11 | 2019-07-11 | Chain tensioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921076090.7U CN210290621U (en) | 2019-07-11 | 2019-07-11 | Chain tensioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210290621U true CN210290621U (en) | 2020-04-10 |
Family
ID=70101552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921076090.7U Expired - Fee Related CN210290621U (en) | 2019-07-11 | 2019-07-11 | Chain tensioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210290621U (en) |
-
2019
- 2019-07-11 CN CN201921076090.7U patent/CN210290621U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200410 Termination date: 20210711 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |