Ratchet Hydraulic Tensioner
A hydraulic tensioner, ratchet-type technology, applied in the direction of belt/chain/gear, transmission device, mechanical equipment, etc., can solve the problem of structural damage of movable rod, and achieve the effect of preventing structural damage and reducing extrusion force.
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no. 1 example
[0037] combine Figure 6 to Figure 7As shown, the ratchet hydraulic tensioner of this embodiment includes: a housing 1 , a plunger 2 , a pin 3 , a ratchet 4 , a first spring 5 , a one-way valve 6 , a spring seat 7 , and a second spring 8 .
[0038] The casing 1 is provided with a plunger hole 10 , a pin hole 11 , a ratchet groove 12 communicating with the plunger hole 10 , and a hydraulic oil channel 13 near the bottom of the plunger hole 10 . like Figure 8 As shown, the ratchet groove 12 has a bottom wall 120 and two opposite side walls 124 , and the pin hole 11 penetrates from the side walls 124 to the outer surface S of the housing 1 . In a modified example of the present embodiment, the pin hole 11 may not penetrate the outer surface S of the casing 1 .
[0039] Continue to refer to Figure 6 to Figure 7 As shown, the pin 3 is located in the pin hole 11 , and both axial ends of the pin 3 protrude from the outer surface S of the housing 1 . The ratchet 4 is sleeved on ...
no. 2 example
[0090] The difference between the second embodiment and the first embodiment is that in the second embodiment, as Figure 12As shown, when the plunger 2 is in the locked state, there is a gap between the two ends of the pin hole 11 along the extension direction A and the pin 3; while in the first embodiment, as Figure 9 As shown, when the plunger 2 is in the locked state, the hole wall of the pin hole 11 abuts against the pin 3 along the extending direction A.
[0091] Compared with the technical solution of the first embodiment, the technical solution of the second embodiment has the following advantages: when the plunger 2 is in the locked state, there is no force between the hole wall of the pin hole 11 and the pin 3, so that the column When the plug 2 is subjected to the force exerted by the chain, the force between the ratchet 4 and the pin 3 is reduced, so that even if the hydraulic tensioner is used for a period of time, the pin 3 is not easily deformed.
no. 3 example
[0093] The difference between the third embodiment and the first embodiment is that in the third embodiment, if Figure 13 As shown, when the plunger 2 is in the locked state, there is a gap between the bottom wall 120 of the ratchet groove 12 and the ratchet 4, and the hole wall of the pin hole 11 abuts against the pin 3 along the extending direction A; while in the first embodiment, as Figure 9 As shown, when the plunger 2 is in the locked state, the bottom wall 120 of the ratchet groove 12 abuts against the ratchet 4 along the extension direction A, and the hole wall of the pin hole 11 abuts against the pin 3 along the extension direction A.
[0094] According to the first embodiment, when the tension force of the chain is small and the plunger 2 moves along the extension direction A, firstly, the plunger 2 will push the ratchet 4 to rotate counterclockwise relative to the housing 1, and the ratchet 4 will rotate counterclockwise. During the clockwise rotation, the ratchet...
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