CN210265656U - Hydraulic shock absorber with good damping effect and hydraulic damping system thereof - Google Patents
Hydraulic shock absorber with good damping effect and hydraulic damping system thereof Download PDFInfo
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- CN210265656U CN210265656U CN201921302250.5U CN201921302250U CN210265656U CN 210265656 U CN210265656 U CN 210265656U CN 201921302250 U CN201921302250 U CN 201921302250U CN 210265656 U CN210265656 U CN 210265656U
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Abstract
The utility model relates to a hydraulic shock absorber that damping effect is good and hydraulic damping system thereof, wherein, this kind of hydraulic damping system includes: the oil through part is sleeved on the piston rod and is fixed in the inner wall of the lower end of the handle pipe; when the handle pipe is pressed downwards, hydraulic oil can be extruded to the spring buffer cavity through the oil passing part; when the handle pipe is lifted up, the hydraulic oil can flow back to the hydraulic storage chamber. In the hydraulic damping system, through the oil through part, when the handle pipe is pressed down, hydraulic oil can be extruded to the spring buffer cavity through the oil through part; when the handle pipe is lifted up, the hydraulic oil can flow back to the hydraulic storage chamber. Not only lubricate the spring in the spring buffer cavity, but also further provide the damping effect and strengthen the damping effect of the damping spring.
Description
Technical Field
The utility model relates to a vehicle spare part especially relates to a hydraulic shock absorber ware that damping effect is good and hydraulic damping system thereof.
Background
The patent number is CN 2015203581976's a straight section of thick bamboo hydraulic rear shock absorber, on this straight section of thick bamboo hydraulic rear shock absorber was applicable to the electric motor car, it included end section of thick bamboo, breeches pipe, locating lever, one-way choke valve and damping spring, wherein, it has hydraulic oil to annotate in the end section of thick bamboo, the one end of breeches pipe sets up one-way choke valve and inserts in the end section of thick bamboo, the locating lever has seted up the oilhole on it for hollow structure, just the one end of locating lever is fixed in on the end section of thick bamboo, the other end is provided with the piston and inserts in the breeches pipe, damping spring includes main spring and extrusion spring, main spring set up in the breeches pipe of piston one side, extrusion spring set up in the breeches pipe of piston opposite side, the breeches pipe with the. Compared with the rear shock absorber with the existing outer spring structure, the straight-tube hydraulic rear shock absorber has the advantages of stable structure, good strength and good shock absorption effect.
Wherein, this kind of straight tube hydraulic pressure rear shock absorber has following shortcoming:
1. the oil way realizes circulation in the positioning pipe, and hydraulic oil is instantly extruded into the positioning pipe in the extrusion process, wherein the hydraulic oil cannot realize good lubrication effect on the main spring extrusion spring;
2. in the process of realizing shock absorption by the fork tube, the bottom end of the fork tube is easy to touch the bottom to cause damage.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: one of the problems in the background art is solved.
The utility model provides a technical scheme that its technical problem adopted is:
a hydraulic damping system comprising: an oil passing portion sleeved on the piston rod, an
The oil through part is fixed in the inner wall of the lower end of the handle pipe; wherein
When the handle pipe is pressed down, hydraulic oil can be extruded to the spring buffer cavity through the oil passing part;
when the handle pipe is lifted up, the hydraulic oil can flow back to the hydraulic storage chamber.
Preferably, the oil passing part comprises a shielding part and an on-off part which are sequentially sleeved on the piston rod from top to bottom;
a plurality of oil passages are formed in the on-off part along the sliding direction of the handle pipe;
the shielding part is covered on the on-off piece to block the oil passage; wherein
When the handle pipe is pressed down, hydraulic oil can pass through the oil passage and flow through the shielding part in a squeezing mode.
Preferably, the on-off part is provided with a first flow channel along the sliding direction of the handle pipe;
a second flow channel communicated with the first flow channel is formed in the shielding part along the sliding direction of the handle pipe;
when the handle pipe is lifted up, hydraulic oil can flow back to the hydraulic storage cavity through the second flow passage and the first flow passage in sequence.
Preferably, a second flow channel communicated with the oil through channel is formed in the shielding part along the sliding direction of the handle pipe;
the piston rod is provided with an oil return hole, an oil filling hole and a return channel communicated with the oil return hole and the oil filling hole; and
the oil through part is positioned on the piston rod between the oil return hole and the oil injection hole; wherein
When the handle pipe is lifted up, hydraulic oil can flow back to the hydraulic storage cavity at the oil filling hole from the oil return hole of the spring buffer cavity.
Preferably, the shielding part comprises a first gasket, a spring piece and a second gasket which are sleeved on the piston rod from top to bottom;
the second flow channel comprises a first channel arranged on the first gasket and a second channel arranged on the second gasket; wherein
When the handle pipe is pressed down, hydraulic oil can sequentially pass through the oil through passage, the second passage and the first passage and reach the spring buffer cavity.
Preferably, the end of the piston rod has a piston head; wherein
When the handle pipe is pressed downwards, hydraulic oil can flow from the spring buffer cavity to the spring placing cavity through the piston head;
when the handle tube is lifted up, hydraulic oil can flow from the spring placing cavity to the spring buffering cavity through the piston head.
Preferably, the piston rod is provided with an oil filling hole, the top end of the piston rod is open, a connecting channel for communicating the oil filling hole with the top end of the piston rod is formed, and the top end of the piston rod is open and located in the spring placing cavity;
the piston head comprises a positioning ring in interference fit with the inner wall of the handle pipe and a sleeve ring sleeved at the end part of the piston rod; and
an annular gap is formed in the outer ring of the lantern ring, and a third channel arranged along the sliding direction of the handle pipe is formed in the bottom end face of the annular gap;
the positioning ring is clamped in the annular gap, the bottom end face of the positioning ring and the inlet end face of the third channel are arranged in a staggered mode, and the height of the positioning ring is smaller than that of the annular gap.
Preferably, the piston head comprises a positioning ring in interference fit with the inner wall of the handle pipe and a sleeve ring sleeved at the end part of the piston rod; and
an annular gap is formed in the outer ring of the lantern ring, a third channel arranged along the sliding direction of the handle pipe is formed in the bottom end face of the annular gap, a fourth channel arranged along the sliding direction of the handle pipe is formed in the top end face of the annular gap, and the fourth channel is communicated with the third channel;
the positioning ring is clamped in the annular gap, the bottom end face of the positioning ring and the inlet end face of the third channel are arranged in a staggered mode, the top end face of the positioning ring and the inlet end face of the fourth channel are arranged in a staggered mode, and the height of the positioning ring is smaller than that of the annular gap.
The utility model has the advantages that:
in the hydraulic damping system, through the oil through part, when the handle pipe is pressed down, hydraulic oil can be extruded to the spring buffer cavity through the oil through part; when the handle pipe is lifted up, the hydraulic oil can flow back to the hydraulic storage chamber. Not only lubricated the spring that is located spring buffer intracavity and spring and places the intracavity, further provided the damping effect moreover, strengthened this damping spring's damping action.
The utility model also provides a hydraulic shock absorber that damping effect is good.
A hydraulic shock absorber with good damping effect comprises a handle tube and an outer sleeve which can be arranged in a relative sliding way, a piston rod fixed at the bottom of an inner cavity of the outer sleeve, a hydraulic damping system as described above arranged on the piston rod,
a buffer part is sleeved on the piston rod at the bottom of the outer sleeve, wherein
When the handle pipe is pressed down, the oil passing part is blocked by the buffer piece so that the hydraulic oil is choked.
The utility model has the advantages that:
the hydraulic shock absorber with good damping effect lubricates a damping spring in a spring buffer cavity and an extrusion spring in a spring placing cavity by adopting a hydraulic damping system, further provides a damping effect and strengthens the damping effect of the shock absorber; through the adoption of the buffer piece, when the handle pipe slides downwards, the bottom collision condition occurs, the oil passing part is blocked by the buffer piece, so that the hydraulic oil is blocked, and the handle pipe is well protected from bottom collision.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of a hydraulic shock absorber with a good damping effect according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of a piston rod according to a first embodiment of the present invention;
fig. 3 is a schematic structural view of a hydraulic shock absorber with good damping effect according to a third embodiment of the present invention;
fig. 4 is a schematic structural view of an oil passing portion according to a first embodiment of the present invention;
fig. 5 is a schematic structural view of a piston head according to a second embodiment of the present invention;
fig. 6 is a schematic structural view of an oil passing portion according to a third embodiment of the present invention;
fig. 7 is a schematic structural view of a piston head according to a fourth embodiment of the present invention;
fig. 8 is a schematic view of a flow passage of hydraulic oil at an oil passing portion when a handle pipe is pressed down according to an embodiment of the present invention;
FIG. 9 is a schematic view of a flow path of hydraulic oil at the piston head when the second handle tube is pressed down according to an embodiment of the present invention;
fig. 10 is a schematic view of a flow passage of hydraulic oil at a piston rod when a handle pipe is pressed down according to an embodiment of the present invention;
fig. 11 is a schematic view of a flow passage of hydraulic oil at a piston rod when the handle pipe is reset according to the first embodiment of the present invention;
fig. 12 is a schematic view of a flow passage of hydraulic oil at an oil passing portion when the three-handle pipe is pressed down according to the embodiment of the present invention;
fig. 13 is a schematic view of a flow path of hydraulic oil at a piston head when a four-handle pipe is pressed down according to an embodiment of the present invention;
fig. 14 is a schematic view of a flow passage of hydraulic oil at an oil passing portion when the three-handle pipe is reset according to the embodiment of the present invention;
fig. 15 is a schematic view of a flow path of hydraulic oil at a piston head when the four-handle tube according to the embodiment of the present invention is reset;
in the figure:
an outer sleeve 1 and a handle tube 2;
the piston rod 3, an oil return hole 301, an oil filling hole 302, a return channel 303, an opening 304 at the top end and a connecting channel 305;
a hydraulic storage cavity 4, a spring buffer cavity 5, a spring placing cavity 6, a damping spring 7 and an extrusion spring 8;
the oil-through part 9, the on-off component 901, the first gasket 902, the spring plate 903, the second gasket 904, the oil-through passage 905, the second passage 906, the first passage 907, the first flow passage 908, the annular groove 909 and the annular opening 910;
a buffer member 10;
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
And (3) setting: the sleeve is fixed, and is a specific form of fixed connection.
A plurality of: several means here greater than or equal to 1.
Example one
As shown in fig. 1, 2 and 4, a hydraulic damping system includes: the oil through part 9 is sleeved on the piston rod 3, and the oil through part 9 is fixed in the inner wall of the lower end of the handle pipe 2; when the handle pipe 2 is pressed down, hydraulic oil can be extruded to the spring buffer cavity 5 through the oil passing part 9; when the handle pipe 2 is lifted up, the hydraulic oil can flow back to the hydraulic storage chamber 4.
The lower end of the inner wall of the handle pipe 2 is provided with a ring cavity which is mainly used for accommodating the oil through part 9, the lower flanging is not turned over during installation, and after the oil through part 9 is placed into the handle pipe 2, the lower flanging is turned over to achieve the effect of clamping and positioning.
In the hydraulic damping system, through the oil through portion 9, when the handle pipe 2 is pressed down, hydraulic oil can be pressed to the spring buffer chamber 5 through the oil through portion 9; when the handle pipe 2 is lifted up, the hydraulic oil can flow back to the hydraulic storage chamber 4. Not only lubricates the spring located in the spring buffer chamber 5 but also further provides a damping effect, enhancing the damping effect of the damping spring.
In this embodiment, the oil passing portion 9 includes a shielding portion and an on-off member 901 sequentially sleeved on the piston rod 3 from top to bottom; a plurality of oil passages 905 are formed in the on-off part 901 along the sliding direction of the handle pipe 2; the shielding portion is covered on the on-off member 901 to seal the oil passage 905. The term "downward" means that the handle tube 2 is pressed downward and upward, and it should be noted that the on-off member 901 may be made of powder metallurgy or plastic. The oil passages 905 are formed in the on-off member 901 from the upper surface to the lower surface thereof, wherein the number of the oil passages 905 is at least one, and the distribution form is not particularly limited.
When the handle pipe 2 is pressed down, hydraulic oil can pass through the oil passage 905 and flow through the shielding portion in a squeezing manner.
Preferably, the shielding part comprises a first gasket 902, a spring piece 903 and a second gasket 904 which are sleeved on the piston rod 3 from top to bottom; the second flow channel comprises a first channel 907 opened on the first gasket 902 and a second channel 906 opened on the second gasket 904; wherein
When the handle pipe 2 is pressed down, the hydraulic oil can pass through the oil passage 905, the second passage 906, and the first passage 907 in this order and reach the spring buffer chamber 5.
In this embodiment, the first spacer 902 is an iron spacer; the second gasket 904 is a thin spring flat gasket, wherein a spring piece 903 is clamped, so that the effect of buffer sealing is achieved, when the handle pipe 2 is pressed down, hydraulic oil can impact the second gasket 904, in the impact process, the spring piece 903 can be pressed tightly, so that the impact force suffered by the second gasket 904 is changed into an inclined plane from the front surface, the second gasket 904 is inclined, and the circulation of the hydraulic oil is achieved.
In order to achieve a good limiting effect, the present embodiment provides a specific structure of the on-off component 901: the on-off member 901 is ring-shaped, an annular opening 910 is opened at the upper end of the inner wall of the on-off member, the second gasket 904 and the spring plate 903 are placed in the annular opening 910, the first gasket 902 completely abuts against the top end surface of the on-off member 901, and the on-off member 901 and the first gasket 902 are clamped in the annular cavity of the handle tube 2.
The working process is as follows:
as shown in fig. 4, 8 and 10, when the handle pipe 2 is pressed down, because the handle pipe 2 and the oil passing portion 9 are relatively stationary and fixed to each other, the handle pipe 2 cooperatively drives the oil passing portion 9 to press down, and during the pressing down process, the hydraulic oil is divided into two branches, one of which is: hydraulic oil will be injected into the spring buffer cavity 5 along the oil filling hole 302, the return channel 303 and the oil return hole 301 on the piston rod 3, wherein the other branch is: hydraulic oil sequentially enters along the oil through passage 905, and synchronously impacts the second gasket 904, and in the impact process, the spring plate 903 is pressed tightly, so that the impact force on the second gasket 904 is changed from the front surface to an inclined surface, the second gasket 904 is inclined, the hydraulic oil is circulated, namely the hydraulic oil is in contact with the damping spring 7 in the spring buffer cavity 5 from the oil through passage 905 to the second passage 906 of the second gasket 904 and finally to the first passage 907 of the first gasket 902, and the lubricating and damping strengthening effects are realized;
as shown in fig. 11, when the handle pipe 2 is reset, a part of hydraulic oil is located in the spring buffer cavity 5, and the reset is required to be realized, and in the process of the reset, because the hydraulic oil impact force on the second gasket 904 has disappeared, the spring piece 903 is reset, so that the second gasket 904 is reset, and the second gasket 904 covers the oil passage 905, so that the circulation of the hydraulic oil cannot be realized; and the part of hydraulic oil passes through the return passage 303 and the oil filling hole 302 in sequence under the action of the oil return hole 301 on the piston rod 3 and flows back to the hydraulic storage cavity 4 again (a small amount of hydraulic oil flows into the spring placing cavity 6), so that the hydraulic oil reciprocates, and the damping spring 7 is lubricated well while the damping effect is achieved.
The second embodiment is performed on the basis of the first embodiment, but the second embodiment can be realized alone or in combination with the first embodiment.
As shown in fig. 1, 2 and 5, in this embodiment, the end of the piston rod 3 has a piston head 11; when the handle pipe 2 is pressed downwards, hydraulic oil can flow from the spring buffering cavity 5 to the spring placing cavity 6 through the piston head 11; when the handle pipe 2 is lifted up, hydraulic oil can flow from the spring placing chamber 6 through the piston head 11 and the oil return hole 301, and when the handle pipe 2 is pressed down for the second time, the hydraulic oil is returned again. The piston head 11 is arranged here, the existing spring buffer cavity 5 is divided into two parts by the piston head 11, the spring buffer cavity 5 for storing the damping spring 7 is arranged at the lower part, and the spring buffer cavity 5 for placing the extrusion spring 8 is formed at the upper part, while the damping spring 7 is lubricated in the first embodiment, and the extrusion spring 8 is lubricated in the second embodiment.
The piston rod 3 is provided with an oil filling hole 302, a top opening 304 and a connecting channel 305 for communicating the oil filling hole 302 with the top opening 304, the top opening 304 refers to that the piston rod 3 is a tubular piston rod 3 with a through top, the top opening 304 is communicated with the oil filling hole 302 and the oil return hole 301 together, the top opening 304 is positioned in the spring placing cavity 6, and the top opening 304 is communicated with the spring placing cavity 6;
the piston head 11 comprises a positioning ring 1101 in interference fit with the inner wall of the handle tube 2 and a collar 1102 sleeved on the end of the piston rod 3; and
an annular gap 1103 is formed in the outer ring of the lantern ring 1102, and a third channel 1104 arranged in the sliding direction of the handle pipe 2 is formed in the bottom end face of the annular gap 1103;
the positioning ring 1101 is clamped in the annular notch 1103, the bottom end surface of the positioning ring 1101 is arranged in a staggered manner with the inlet end surface of the third channel 1104, and the staggered arrangement of the bottom end surface of the positioning ring 1101 and the inlet end surface of the third channel 1104 means that when the handle pipe 2 is pressed down, because the positioning ring 1101 and the inner wall of the handle pipe 2 are in interference fit, the positioning ring 1101 and the inner wall of the handle pipe 2 are relatively fixed, that is, the handle pipe 2 drives the positioning ring 1101 to be pressed down, so that the bottom end surface of the positioning ring 1101 and the bottom end surface of the annular notch 1103 (which is also the inlet end surface of the third channel 1104) are attached, at this time, the inlet of the third channel 1104 is not covered by the bottom end surface of the positioning ring 1101, and can be partially covered, but cannot.
The height of the positioning ring 1101 is smaller than the height of the annular gap 1103, and the technical effect of the features herein is to facilitate the positioning ring 1101 to be displaced relative to the annular gap 1103 in the sliding direction of the handle pipe 2.
The working process is as follows:
as shown in fig. 5, 9 and 10, after the hydraulic oil flows into the spring buffer chamber 5 with the damping spring 7, during the process of further pressing down the handle pipe 2, part of the hydraulic oil flows into the third passage 1104 on the piston head 11 and thus into the annular gap 1103; at this time, because the positioning ring 1101 is in interference fit with the inner wall of the handle tube 2, the positioning ring 1101 is relatively fixed, that is, the handle tube 2 drives the positioning ring 1101 to press downward, so that the bottom end surface of the positioning ring 1101 is attached to the bottom end surface of the annular gap 1103 (which is also the inlet end surface of the third channel 1104), and meanwhile, a gap exists between the top end surface of the positioning ring 1101 and the top end surface of the annular gap 1103 and a gap also exists between the outer wall of the piston head 11 and the inner wall of the handle tube 2, so that the hydraulic oil in the annular gap 1103 can enter the spring placing cavity 6 through the two gaps, thereby achieving the lubricating effect on the compression spring 8.
Synchronously, a flow of hydraulic oil is injected into the spring buffer cavity 5 along the oil filling hole 302, the return passage 303 and the oil return hole 301 on the piston rod 3, and part of the hydraulic oil is directly pushed to the top opening 304 to enter the spring placing cavity 6, so that the lubricating effect of the extrusion spring 8 is realized.
As shown in fig. 11, when the handle pipe 2 is reset, at this time, because the positioning ring 1101 is in interference fit with the inner wall of the handle pipe 2, the positioning ring 1101 and the inner wall of the handle pipe 2 are relatively fixed, that is, the handle pipe 2 drives the positioning ring 1101 to lift up, so that the top end surface of the positioning ring 1101 fits with the top end surface of the annular notch 1103, and thus the gap between the top end surface of the positioning ring 1101 and the top end surface of the annular notch 1103 is sealed, and at this time, in order to realize the reset of the hydraulic oil, the hydraulic oil can be discharged from the oil filler hole 302 only through the top opening. (Note that the connection channel 305 and the return channel 303 are in communication with each other and are the same for the sake of simplicity of the integral structure)
EXAMPLE III
The difference between the third embodiment and the first embodiment is that the piston rod 3 is a solid rod without the return channel 303/connecting channel 305 inside.
As shown in figures 3 and 6 of the drawings,
a first flow channel 908 is formed in the on-off part 901 along the sliding direction of the handle pipe 2; a second flow channel communicated with the first flow channel 908 is arranged on the shielding part along the sliding direction of the handle pipe 2;
the first flow channel 908 is arranged in an inner ring of the oil passage 905, and according to different requirements, the first flow channel 908 may also be arranged in an outer ring of the oil passage 905, so that in the process of pressing down the handle pipe 2, the oil passage 905 and the first flow channel 908 can synchronously realize an oil inlet effect, and in the process of resetting the handle pipe 2, the oil passage 905 is completely covered and shielded and cannot realize circulation, so that the circulation is realized by means of the communication between the second flow channel and the first flow channel 908.
When the handle pipe 2 is lifted up, the hydraulic oil can flow back to the hydraulic storage chamber 4 through the second flow passage, the first flow passage 908 in this order.
The shielding part comprises a first gasket 902, a spring piece 903 and a second gasket 904 which are sleeved on the piston rod 3 from top to bottom; the second flow channel comprises a first channel 907 opened on the first gasket 902 and a second channel 906 opened on the second gasket 904; wherein
When the handle pipe 2 is pressed down, the hydraulic oil can pass through the oil passage 905, the second passage 906, and the first passage 907 in this order and reach the spring buffer chamber 5.
In the embodiment, it has been pointed out that, when the handle pipe 2 is reset, the hydraulic oil needs to be reset, and at this time, a part of the hydraulic oil is located in the spring buffer cavity 5, and the reset needs to be realized, and in the process of the reset, because the hydraulic oil impact force on the second gasket 904 has disappeared, the spring plate 903 is reset, so that the second gasket 904 is reset, and the second gasket 904 covers the oil passage 905, so that the circulation of the hydraulic oil cannot be realized;
in order to solve the technical problem, the hollow piston rod 3 is adopted to realize the circulation in the third embodiment, and the first flow channel 908 is formed on the switching piece 901 along the sliding direction of the handle pipe 2.
The on-off member 901 is also annular, and an annular groove 909 is formed at an upper end of the inner ring, a first flow channel 908 is formed at a bottom end surface of the annular groove 909, and the second flow channel is communicated with the annular groove 909.
Since the through oil passage 905 is formed in the top end surface of the open/close member 901, the hydraulic oil can be discharged through the second flow passage in a state where the second flow passage is communicated with the ring groove 909 even if the through oil passage 905 is covered.
The working process is as follows:
as shown in fig. 3, 6 and 11, when the handle pipe 2 is pressed down, because the handle pipe 2 and the oil passing portion 9 are relatively stationary and fixed to each other, the handle pipe 2 cooperatively drives the oil passing portion 9 to press down, and during the pressing down, the hydraulic oil is divided into two branches, one of which is: hydraulic oil is injected into the spring buffer chamber 5 from the first flow passage 908 and the second flow passage, wherein the other branch is: hydraulic oil sequentially enters along the oil through passage 905, and synchronously impacts the second gasket 904, and in the impact process, the spring plate 903 is pressed tightly, so that the impact force on the second gasket 904 is changed from the front surface to an inclined surface, the second gasket 904 is inclined, the hydraulic oil is circulated, namely the hydraulic oil is in contact with the damping spring 7 in the spring buffer cavity 5 from the oil through passage 905 to the second passage 906 of the second gasket 904 and finally to the first passage 907 of the first gasket 902, and the lubricating and damping strengthening effects are realized;
as shown in fig. 14, when the handle pipe 2 is reset, hydraulic oil needs to be reset, and at this time, a part of hydraulic oil is located in the spring buffer cavity 5, and reset needs to be realized, and in the process of reset, because hydraulic oil impact force on the second gasket 904 disappears, the spring plate 903 is reset, so that the second gasket 904 is reset, and the second gasket 904 covers the oil passage 905, so that circulation of hydraulic oil cannot be realized; and the hydraulic oil is returned to the hydraulic storage chamber 4 through the first passage 907, the second passage 906, and the first flow passage 908. With this reciprocation, the damping spring 7 is lubricated well while damping the vibration.
Example four
The fourth example is based on the third example.
As shown in figures 3 and 7 of the drawings,
the piston head 11 comprises a positioning ring 1101 in interference fit with the inner wall of the handle tube 2 and a collar 1102 sleeved on the end of the piston rod 3; and
an annular gap 1103 is formed in the outer ring of the lantern ring 1102, a third channel 1104 arranged in the sliding direction of the handle pipe 2 is formed in the bottom end face of the annular gap 1103, a fourth channel 1105 arranged in the sliding direction of the handle pipe 2 is formed in the top end face of the annular gap 1103, and the fourth channel 1105 is communicated with the third channel 1104;
the positioning ring 1101 is clamped in the collar 1102, the bottom end face of the positioning ring 1101 is arranged in a staggered manner with the inlet end face of the third channel 1104, the top end face of the positioning ring 1101 is arranged in a staggered manner with the inlet end face of the fourth channel 1105, and the height of the positioning ring 1101 is smaller than that of the collar 1102.
The working process is as follows:
as shown in fig. 3, 7 and 13, after the hydraulic oil flows into the spring buffer chamber 5 with the damping spring 7, during the process of further pressing down the handle pipe 2, part of the hydraulic oil flows into the third passage 1104 on the piston head 11 and thus into the annular gap 1103; at this time, because the positioning ring 1101 is in interference fit with the inner wall of the handle tube 2, the positioning ring 1101 is relatively fixed, that is, the handle tube 2 drives the positioning ring 1101 to press downward, so that the bottom end surface of the positioning ring 1101 is attached to the bottom end surface of the annular gap 1103 (which is also the inlet end surface of the third channel 1104), and meanwhile, a gap exists between the top end surface of the positioning ring 1101 and the top end surface of the annular gap 1103 and a gap also exists between the outer wall of the piston head 11 and the inner wall of the handle tube 2, so that the hydraulic oil in the annular gap 1103 can enter the spring placing cavity 6 through the two gaps, thereby achieving the lubricating effect on the compression spring 8.
Simultaneously, a flow of hydraulic oil is directly injected into the spring placing cavity 6 along the third passage 1104 and the fourth passage 1105, so that the lubricating effect of the extrusion spring 8 is realized.
As shown in fig. 15, when the handle tube 2 is reset, at this time, because the positioning ring 1101 is in interference fit with the inner wall of the handle tube 2, the positioning ring 1101 and the inner wall of the handle tube 2 are relatively fixed, that is, the handle tube 2 drives the positioning ring 1101 to lift up, so that the top end surface of the positioning ring 1101 is attached to the top end surface of the annular notch 1103, thereby closing a gap between the top end surface of the positioning ring 1101 and the top end surface of the annular notch 1103, at this time, in order to reset hydraulic oil, hydraulic oil flows back to the spring buffer cavity 5 along the fourth channel 1105 and the third channel 1104, and when the handle tube 2 is pressed down for the second time, most of the hydraulic oil flows back to the spring buffer cavity.
In the fifth embodiment, the first step is,
example five was performed based on the above examples.
As shown in figures 1, 2 and 3
A hydraulic shock absorber with good damping effect comprises a handle tube 2 and an outer sleeve 1 which can be arranged in a relative sliding way, a piston rod 3 fixed at the bottom of an inner cavity of the outer sleeve 1, a hydraulic damping system as in any one of the first to the fourth embodiments is arranged on the piston rod 3,
a buffer 10 is sleeved on the piston rod 3 at the bottom of the outer sleeve 1. Wherein
When the handle pipe 2 is pressed down, the oil passage 9 is blocked by the damper 10 so that the hydraulic oil is choked. Wherein, lead to and have a plurality of logical oil ducts 9 on the oil portion 9, when handle pipe 2 pushes down to the contact with the top end face of bolster 10, lead to the mutual laminating of the entry terminal surface of oil duct 9 and the top end face of bolster 10, hydraulic oil can't pour into in leading to oil duct 9 this moment to guaranteed that handle pipe 2 can not continue to push down, realized fine avoiding handle pipe 2 to push down and hit the possibility at the bottom. This bolster 10 is the rubber spare, through the adoption of rubber spare, when handle pipe 2 pushes down, if push down too violently, can cause the striking to outer sleeve pipe 1, for better protection handle pipe 2, consequently set up this bolster 10 at the root of piston rod 3 for protect handle pipe 2, play the effect at the bottom of the anticollision. The hydraulic damping system is matched with the buffering piece 10 made of rubber, so that the shock absorber achieves a good light weight effect.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. A hydraulic damping system, comprising: an oil passing portion sleeved on the piston rod, an
The oil through part is fixed in the inner wall of the lower end of the handle pipe; wherein
When the handle pipe is pressed down, hydraulic oil can be extruded to the spring buffer cavity through the oil passing part;
when the handle pipe is lifted up, the hydraulic oil can flow back to the hydraulic storage chamber.
2. The hydraulic damping system of claim 1,
the oil passing part comprises a shielding part and a switching part which are sequentially sleeved on the piston rod from top to bottom;
a plurality of oil passages are formed in the on-off part along the sliding direction of the handle pipe;
the shielding part is covered on the on-off piece to block the oil passage; wherein
When the handle pipe is pressed down, hydraulic oil can pass through the oil passage and flow through the shielding part in a squeezing mode.
3. The hydraulic damping system of claim 2,
a first flow channel is formed in the on-off piece along the sliding direction of the handle pipe;
a second flow channel communicated with the first flow channel is formed in the shielding part along the sliding direction of the handle pipe;
when the handle pipe is lifted up, hydraulic oil can flow back to the hydraulic storage cavity through the second flow passage and the first flow passage in sequence.
4. The hydraulic damping system of claim 2,
a second flow channel communicated with the oil through passage is formed in the shielding part along the sliding direction of the handle pipe;
the piston rod is provided with an oil return hole, an oil filling hole and a return channel communicated with the oil return hole and the oil filling hole; and
the oil through part is positioned on the piston rod between the oil return hole and the oil injection hole; wherein
When the handle pipe is lifted up, hydraulic oil can flow back to the hydraulic storage cavity at the oil filling hole from the oil return hole of the spring buffer cavity.
5. The hydraulic damping system of claim 3 or 4,
the shielding part comprises a first gasket, a spring piece and a second gasket which are sleeved on the piston rod from top to bottom;
the second flow channel comprises a first channel arranged on the first gasket and a second channel arranged on the second gasket; wherein
When the handle pipe is pressed down, hydraulic oil can sequentially pass through the oil through passage, the second passage and the first passage and reach the spring buffer cavity.
6. The hydraulic damping system of claim 1,
the end of the piston rod is provided with a piston head; wherein
When the handle pipe is pressed downwards, hydraulic oil can flow from the spring buffer cavity to the spring placing cavity through the piston head;
when the handle tube is lifted up, hydraulic oil can flow from the spring placing cavity to the spring buffering cavity through the piston head.
7. The hydraulic damping system of claim 6,
the piston rod is provided with an oil filling hole, the top end of the piston rod is open, a connecting channel for communicating the oil filling hole with the top end of the piston rod is formed, and the top end of the piston rod is open and located in the spring placing cavity;
the piston head comprises a positioning ring in interference fit with the inner wall of the handle pipe and a sleeve ring sleeved at the end part of the piston rod; and
an annular gap is formed in the outer ring of the lantern ring, and a third channel arranged along the sliding direction of the handle pipe is formed in the bottom end face of the annular gap;
the positioning ring is clamped in the annular gap, the bottom end face of the positioning ring and the inlet end face of the third channel are arranged in a staggered mode, and the height of the positioning ring is smaller than that of the annular gap.
8. The hydraulic damping system of claim 6,
the piston head comprises a positioning ring in interference fit with the inner wall of the handle pipe and a sleeve ring sleeved at the end part of the piston rod; and
an annular gap is formed in the outer ring of the lantern ring, a third channel arranged along the sliding direction of the handle pipe is formed in the bottom end face of the annular gap, a fourth channel arranged along the sliding direction of the handle pipe is formed in the top end face of the annular gap, and the fourth channel is communicated with the third channel;
the positioning ring is clamped in the annular gap, the bottom end face of the positioning ring and the inlet end face of the third channel are arranged in a staggered mode, the top end face of the positioning ring and the inlet end face of the fourth channel are arranged in a staggered mode, and the height of the positioning ring is smaller than that of the annular gap.
9. The utility model provides a effectual hydraulic shock absorber of damping, includes handle pipe and the outer tube that can the relative slip set up, fixes the piston rod in the inner chamber bottom of outer tube, its characterized in that: the piston rod is provided with a hydraulic damping system according to any one of claims 1 to 8,
a buffer part is sleeved on the piston rod at the bottom of the outer sleeve, wherein
When the handle pipe is pressed down, the oil passing part is blocked by the buffer piece so that the hydraulic oil is choked.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921302250.5U CN210265656U (en) | 2019-08-12 | 2019-08-12 | Hydraulic shock absorber with good damping effect and hydraulic damping system thereof |
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| CN201921302250.5U CN210265656U (en) | 2019-08-12 | 2019-08-12 | Hydraulic shock absorber with good damping effect and hydraulic damping system thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319145A (en) * | 2019-08-12 | 2019-10-11 | 常州市一上电动车辆配件有限公司 | A kind of good hydraulic damper of damping and its hydraulic damping system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319145A (en) * | 2019-08-12 | 2019-10-11 | 常州市一上电动车辆配件有限公司 | A kind of good hydraulic damper of damping and its hydraulic damping system |
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