CN218543028U - Buckling sealing positioning device of single-cylinder shock absorber - Google Patents
Buckling sealing positioning device of single-cylinder shock absorber Download PDFInfo
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- CN218543028U CN218543028U CN202222414381.0U CN202222414381U CN218543028U CN 218543028 U CN218543028 U CN 218543028U CN 202222414381 U CN202222414381 U CN 202222414381U CN 218543028 U CN218543028 U CN 218543028U
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- shock absorber
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- sleeve
- tube shock
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Abstract
The utility model discloses a withhold of single-tube shock absorber and seal positioner, first position sleeve, second position sleeve, hole setting element including coaxial coupling, the hole setting element is connected in the second position sleeve, first position sleeve is connected outside the second position sleeve, first position sleeve with second position sleeve tip forms and to carry out spacing constant head tank to the tip of single-tube shock absorber, the tip of second position sleeve forms butt portion. The utility model has the advantages that: can realize accurate withholding for seal more reliably, improve product quality, reduce the rejection rate, and the terminal surface of first position sleeve hugs closely withholds the mould, has improved the rigidity when withholding the mould atress, makes the working cylinder extrusion deformation more even.
Description
Technical Field
The utility model belongs to the technical field of the automobile parts technique and specifically relates to a withhold and seal positioner of single-tube shock absorber.
Background
The shock absorber is divided into a single tube form and a double tube form according to different structures. The single cylinder is widely applied to the suspension of a high-end luxury passenger car due to the characteristics of simple structure, light weight, large inflation pressure, stable work and high comfort. The single-cylinder shock absorber is divided into an upper chamber and a lower chamber by an internal fluctuation piston, the upper chamber is filled with shock absorber oil, and the lower chamber is filled with high-pressure nitrogen to work in a reciprocating mode in cooperation with a piston valve of the upper chamber.
The monotube shock absorber has simple structure and outstanding working advantages, but has high requirements on precision of parts and assembly process. The structure of the sealing part of the single-tube shock absorber (see figure 1-1). After the oil seal guide assembly is buckled with the working cylinder, the inner hole and the outer diameter of the oil seal guide assembly are ensured to be coaxial with the piston rod and the working cylinder respectively, and the coaxiality is less than or equal to 0.05; otherwise, the single-cylinder shock absorber has increased abnormal friction due to eccentric wear, and the smoothness of the shock absorber is deteriorated, thereby affecting the driving comfort.
In a traditional sealing buckling mode (see fig. 1-2 and fig. 1-3), due to the existence of an installation gap, an oil seal guide assembly 3 and a working cylinder 5 are buckled and pressed relatively freely on a buckling and pressing die on equipment, the consistency of axial distances of riveting points cannot be guaranteed, and the distribution deviation is 0.8-1, so that the friction force of the shock absorber is increased, and the superior performance of the single-cylinder shock absorber is seriously restricted.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in: how to solve present single-cylinder shock absorber and withhold the mode relatively more freely, can't guarantee the axial distance of each riveting point, increase shock absorber frictional force's problem.
The utility model discloses a following technical means realizes solving above-mentioned technical problem:
the utility model provides a withhold of single-tube shock absorber and seal positioner, includes coaxial coupling's first position sleeve, second position sleeve, hole setting element, the hole setting element is connected in the second position sleeve, first position sleeve is connected outside the second position sleeve, first position sleeve with second position sleeve tip forms and to carry out spacing constant head tank to the tip of single-tube shock absorber, the tip of second position sleeve forms butt portion.
The utility model discloses when withholding, be located the tip of single-tube shock absorber, the working cylinder of single-tube shock absorber stretches into in the constant head tank, and the constant head tank carries out tip and outer wall location to the working cylinder of single-tube shock absorber, and butt portion carries out the butt to the terminal surface of the oil blanket direction assembly of single-tube shock absorber, guarantees that the riveting point on the working cylinder aligns with the recess position on the oil blanket direction assembly all the time, can realize accurate withholding; after the inner hole positioning piece is connected with the piston rod, the inner hole positioning piece is coaxial with the oil seal guide assembly, and the first positioning sleeve and the second positioning sleeve are fixed together, so that the coaxiality of the first positioning sleeve and the oil seal guide assembly is ensured, and besides the outer diameter of the oil seal guide assembly is ensured to be coaxial with the working cylinder, the first positioning sleeve also plays a role in ensuring the coaxiality of the oil seal guide assembly 1 and the working cylinder; through the utility model discloses guaranteed the axiality of working cylinder, oil blanket direction assembly and piston rod around the single section of thick bamboo shock absorber withhold and guaranteed every product and every on the single product withhold the position unanimous, make to seal more reliable, improve product quality, reduce the rejection rate, and the terminal surface of first position sleeve hugs closely withholds the mould, has improved the rigidity when withholding the mould atress for the working cylinder extrusion deformation is more even.
Preferably, the inner hole positioning piece is a sliding bearing.
When the single-cylinder shock absorber is buckled, a piston rod of the single-cylinder shock absorber is connected with the sliding bearing, the sliding bearing not only protects the surface of the piston rod, but also enables the second positioning sleeve and the oil seal guide assembly to keep coaxial in the buckling and sealing process.
Preferably, the inner wall of the first locating sleeve is provided with an internal thread, the outer wall of the second locating sleeve is provided with an external thread, and the first locating sleeve is connected with the second locating sleeve through a thread.
Preferably, the end of the first positioning sleeve, which is close to the buckling mould during buckling, is a conical surface.
The conical surface can ensure that the bottom of the buckling and pressing mold is not interfered, so that the buckling and pressing mold can be smoothly pressed down.
Preferably, the second positioning sleeve extends radially inwards to form a first step on the outer wall of one end, close to the buckling mould, of the second positioning sleeve during buckling, and the step surface of the first step and the inner wall of the first positioning sleeve form a positioning groove.
Preferably, the outer diameter of the positioning groove is the same as that of the working cylinder of the single-cylinder shock absorber, when the positioning groove is buckled, the working cylinder of the single-cylinder shock absorber is connected with the positioning groove, and the end face of the positioning groove is abutted to the end face of the working cylinder of the single-cylinder shock absorber.
Preferably, the inner bore of the second positioning sleeve extends outwards to form a second step, when the second positioning sleeve is buckled, a step surface of the second step and the end surface of the second positioning sleeve form an abutting part, and the abutting part abuts against the end surface of the oil seal guide assembly of the mono-tube shock absorber.
Preferably, the inner hole positioning piece is connected with the inner hole of the second positioning sleeve in an interference fit manner.
The utility model has the advantages of:
(1) The utility model discloses when withholding, be located the tip of single-tube shock absorber, the working cylinder of single-tube shock absorber stretches into in the constant head tank, and the constant head tank carries out tip and outer wall location to the working cylinder of single-tube shock absorber, and butt portion carries out the butt to the terminal surface of the oil blanket direction assembly of single-tube shock absorber, guarantees that the riveting point on the working cylinder aligns with the recess position on the oil blanket direction assembly all the time, can realize accurate withholding; after the inner hole positioning piece is connected with the piston rod, the inner hole positioning piece is coaxial with the oil seal guide assembly, and the first positioning sleeve and the second positioning sleeve are fixed together, so that the coaxiality of the first positioning sleeve and the oil seal guide assembly is ensured, and besides the outer diameter of the oil seal guide assembly is ensured to be coaxial with the working cylinder, the first positioning sleeve also plays a role in ensuring the coaxiality of the oil seal guide assembly 1 and the working cylinder; through the utility model, the coaxiality of the working cylinder, the oil seal guide assembly and the piston rod before and after buckling of the single-cylinder shock absorber is ensured, the consistent position of each buckling point on each product and a single product is ensured, the sealing is more reliable, the product quality is improved, the rejection rate is reduced, the end surface of the first positioning sleeve is tightly attached to the buckling mold, the rigidity of the buckling mold during stress is improved, and the extrusion deformation of the working cylinder is more uniform;
(2) When the single-cylinder shock absorber is buckled, a piston rod of the single-cylinder shock absorber is connected with the sliding bearing, the sliding bearing not only protects the surface of the piston rod, but also enables the second positioning sleeve and the oil seal guide assembly to keep coaxial in the buckling and sealing process;
(3) The first positioning sleeve is a conical surface at one end close to the buckling mould during buckling, and the conical surface can ensure that the first positioning sleeve does not interfere with the bottom of the buckling mould, so that the buckling mould is smoothly pressed down;
(4) The utility model discloses a scheme reduces the processing degree of difficulty, realizes the product and fixes a position fast, improves production efficiency.
Drawings
FIG. 1-1 is a cross-sectional view of a monotube shock absorber;
FIG. 1-2 is a schematic view of a single tube damper in a buckled position;
FIGS. 1-3 are schematic views of a prior art monotube shock absorber during buckling;
FIG. 2 is a sectional view of a crimping and sealing positioning device of the single-tube shock absorber according to the embodiment of the present invention;
FIG. 3 is a sectional view of the buckling and sealing positioning device of the single-tube shock absorber according to the embodiment of the present invention;
reference numbers in the figures:
1. a mono-tube shock absorber; 11. a piston rod; 12. a support plate; 13. an oil seal guide assembly; 14. an O-shaped sealing ring; 15. a working cylinder;
2. a first positioning sleeve; 3. a second positioning sleeve; 4. an inner hole positioning piece;
5. a top rod; 6. buckling and pressing the die; 7. a set screw; 8. buckling and pressing equipment;
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are clearly and completely described below in combination with the technical solution of the embodiments of the present invention, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 2 and 3, a buckling sealing positioning device of a single-tube shock absorber comprises a first positioning sleeve 2, a second positioning sleeve 3 and an inner hole positioning piece 4 which are coaxially connected, wherein the inner hole positioning piece 4 is connected in the second positioning sleeve 3, the first positioning sleeve 2 is connected outside the second positioning sleeve 3, the first positioning sleeve 2 and the end part of the second positioning sleeve 3 form a positioning groove which can limit the end part of the single-tube shock absorber 1, and the end part of the second positioning sleeve 3 forms a butting part.
Specifically, as shown in fig. 1-1 and 1-2, the single-tube shock absorber 1 includes a piston rod 11, a support plate 12, an oil seal guide assembly 13, an O-ring seal 14, and a working cylinder 15, where the working cylinder 15 is located at the outermost ring and is connected with the oil seal guide assembly 13 through eight buckling points uniformly distributed on the circumference. As shown in fig. 1-3, the top end of the crimping die 6 is fixed on a crimping device 8 through a fixing screw 7, and the crimping device 8 improves the crimping power.
In this embodiment, the first positioning sleeve 2 and the second positioning sleeve 3 are both cylindrical structures, as shown in fig. 2, an inner thread is provided on an inner wall of a bottom end of the first positioning sleeve 2, an outer thread is provided on an outer wall of a middle portion of the second positioning sleeve 3, and the first positioning sleeve 2 is connected to the second positioning sleeve 3 through a thread. And the bottom end of the first positioning sleeve 2 is abutted against the bottom of the threaded section of the second positioning sleeve 3, after the first positioning sleeve 2 is connected with the second positioning sleeve 3, the top of the first positioning sleeve 2 is higher than the second positioning sleeve 3, and the specific higher value is adapted to the height of the single-tube shock absorber 1, as shown in fig. 3, when the rightmost end of the second positioning sleeve 3 is abutted against the end surface of the oil seal guide assembly 13, the rightmost end of the first positioning sleeve 2 is close to a buckling point, so that the first positioning sleeve 2 is required to be ensured not to interfere with the work of the buckling and pressing mold 6, and certain rigid support can be provided for the buckling and pressing mold 6.
As shown in fig. 3, the end of the first positioning sleeve 2 close to the buckling mold 6 is a conical surface when buckling, the conical surface can ensure that the first positioning sleeve 2 does not interfere with the bottom of the buckling mold 6, so that the buckling mold 6 can be smoothly pressed down, the positioning function can be realized, and when the buckling mold 6 performs eight circumferential buckling, the pressing positions are consistent, and the consistency of the buckling depth is ensured.
As shown in fig. 2 and 3, the outer wall of one end of the second positioning sleeve 3, which is close to the crimping mold 6 during crimping, extends radially inward to form a first step, and a positioning groove Q is formed between the step surface of the first step and the inner wall of the first positioning sleeve 2; the positioning groove Q is an annular groove; in this embodiment, the positioning groove Q is formed by combining an L-shaped step surface of the first positioning sleeve 2 and an inner wall of the second positioning sleeve 3, and may also be formed by combining an outer wall of the first positioning sleeve 2 and an L-shaped step surface formed on the second positioning sleeve 3.
The outer diameter of the positioning groove Q is the same as the outer diameter of the working cylinder 15 of the mono-tube shock absorber 1, the outer diameter of the positioning groove Q is the inner diameter of the first positioning sleeve 2, as shown in fig. 3, when the locating groove Q is buckled, the working cylinder 15 of the mono-tube shock absorber 1 extends into the positioning groove Q and is positioned by the positioning groove Q, and the left end face of the positioning groove Q is abutted to the right end face of the working cylinder 15 of the mono-tube shock absorber 1. The width of the positioning groove Q is the same as the thickness of the cylinder 15.
As shown in fig. 2, an inner hole at the top end of the second positioning sleeve 3 extends radially outward to form a second step, and as shown in fig. 3, when the second positioning sleeve is fastened, a step surface of the second step and an end surface of the second positioning sleeve 3 form an abutting portion, and the abutting portion abuts against an end surface of the oil seal guide assembly 13 of the mono-tube shock absorber 1.
In the using process of the embodiment:
as shown in fig. 3, during crimping, the crimping seal positioning device is located at the left end of the single-tube shock absorber 1 and is abutted by the ejector rod 5, the piston rod 11 extends into the inner hole positioning piece 4 to realize positioning, the working cylinder 15 of the single-tube shock absorber 1 extends into the positioning groove Q, the positioning groove Q positions the end and the outer wall of the working cylinder 15 of the single-tube shock absorber 1, the abutting part abuts against the end face of the oil seal guide assembly 13 of the single-tube shock absorber 1, and it is ensured that the riveting point on the working cylinder 15 is always aligned with the groove position on the oil seal guide assembly 13, and accurate crimping can be realized; when the end face of the working cylinder 15 is tightly attached to the end face of the second positioning sleeve 3, the oil seal guide assembly 13 cannot continue to be pushed in the axial direction, and the buckling position is staggered; the length of the end face of the first positioning sleeve 2 relative to the end face of the working cylinder 15 is fixed, and the buckling position can be quickly and accurately determined.
After the inner hole positioning piece 4 is connected with the piston rod 11, the inner hole positioning piece 4 is coaxial with the oil seal guide assembly 13, and the first positioning sleeve 2 and the second positioning sleeve 3 are fixed together, so that the coaxiality of the first positioning sleeve 2 and the oil seal guide assembly 13 is ensured; through the first positioning sleeve 2, the second positioning sleeve 3 and the inner hole positioning piece 4 in the embodiment, the coaxiality of the working cylinder 15, the oil seal guide assembly 13 and the piston rod 11 before and after buckling of the single-cylinder shock absorber 1 is guaranteed, the position consistency of each buckling point on each product and each single product is guaranteed, the product quality is improved, the rejection rate is reduced, the customer satisfaction degree is improved, the end face of the first positioning sleeve 2 is tightly attached to the buckling mold 6, the rigidity of the buckling mold 6 under stress is improved, and the extrusion deformation of the working cylinder 15 is more uniform.
In this embodiment, the buckling position of the buckling mold 6 and the press-fitting depth of the oil seal guide assembly 13 are guaranteed to use the end face of the working cylinder 15 as a reference, and under the action of the buckling mold 6, the riveting deformation point on the working cylinder 15 is well pressed into the groove preset on the oil seal guide assembly 13, so that the components in the single-tube shock absorber 1 are guaranteed: the coaxiality of the oil seal guide assembly 13, the piston rod 11 and the working cylinder 15 ensures that the sealing is more reliable.
The second embodiment:
in this embodiment, the inner hole positioning element 4 is a sliding bearing. The sliding bearing is connected with the inner hole of the second positioning sleeve 3 in an interference fit manner.
When the single-tube shock absorber 1 is buckled, the piston rod 11 is connected with the sliding bearing, and the sliding bearing not only protects the surface of the piston rod 11, but also enables the second positioning sleeve 3 and the oil seal guide assembly 13 to keep coaxial in the buckling and sealing process.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
1. The utility model provides a withhold of single-tube shock absorber and seal positioner, its characterized in that, includes coaxial coupling's first position sleeve, second position sleeve, hole setting element, the hole setting element is connected in the second position sleeve, first position sleeve is connected outside the second position sleeve, first position sleeve with second position sleeve tip forms and to carry out spacing constant head tank to the tip of single-tube shock absorber, the tip of second position sleeve forms butt portion.
2. The swage seal positioning device of the mono-tube shock absorber according to claim 1, wherein the inner hole positioning member is a sliding bearing.
3. The buckling and sealing positioning device of the mono-tube shock absorber as claimed in claim 1, wherein the inner wall of the first positioning sleeve is provided with an internal thread, the outer wall of the second positioning sleeve is provided with an external thread, and the first positioning sleeve is connected with the second positioning sleeve through a thread.
4. The buckling and sealing positioning device of the mono-tube shock absorber as claimed in claim 1, wherein the end of the first positioning sleeve close to the buckling mold during buckling is a conical surface.
5. The buckling-sealing positioning device of the mono-tube shock absorber as claimed in claim 1, wherein the second positioning sleeve extends radially inward to form a first step on the outer wall of the end close to the buckling mold during buckling, and the step surface of the first step and the inner wall of the first positioning sleeve form a positioning groove.
6. The buckling and sealing positioning device for the mono-tube shock absorber as claimed in claim 1, wherein the outer diameter of the positioning groove is the same as the outer diameter of the working cylinder of the mono-tube shock absorber, when buckling, the working cylinder of the mono-tube shock absorber is connected with the positioning groove, and the end surface of the positioning groove abuts against the end surface of the working cylinder of the mono-tube shock absorber.
7. The buckling-sealing positioning device of the mono-tube shock absorber as claimed in claim 1, wherein the inner bore of the second positioning sleeve extends radially outwards to form a second step, and when buckled, the step surface of the second step forms an abutting part with the end surface of the second positioning sleeve, and the abutting part abuts with the end surface of the oil-sealing guide assembly of the mono-tube shock absorber.
8. The buckling and sealing positioning device of the mono-tube shock absorber as claimed in claim 1, wherein the inner hole positioning member is connected with the inner hole of the second positioning sleeve in an interference fit manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222414381.0U CN218543028U (en) | 2022-09-09 | 2022-09-09 | Buckling sealing positioning device of single-cylinder shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222414381.0U CN218543028U (en) | 2022-09-09 | 2022-09-09 | Buckling sealing positioning device of single-cylinder shock absorber |
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| Publication Number | Publication Date |
|---|---|
| CN218543028U true CN218543028U (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222414381.0U Active CN218543028U (en) | 2022-09-09 | 2022-09-09 | Buckling sealing positioning device of single-cylinder shock absorber |
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| Country | Link |
|---|---|
| CN (1) | CN218543028U (en) |
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- 2022-09-09 CN CN202222414381.0U patent/CN218543028U/en active Active
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