CN201428771Y - Automobile shock absorber connecting rod subassembly - Google Patents
Automobile shock absorber connecting rod subassembly Download PDFInfo
- Publication number
- CN201428771Y CN201428771Y CN2009203033482U CN200920303348U CN201428771Y CN 201428771 Y CN201428771 Y CN 201428771Y CN 2009203033482 U CN2009203033482 U CN 2009203033482U CN 200920303348 U CN200920303348 U CN 200920303348U CN 201428771 Y CN201428771 Y CN 201428771Y
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- China
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- connecting rod
- fixed cover
- annular groove
- shock absorber
- fixing sleeve
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Abstract
The utility model discloses an automobile shock absorber connecting rod subassembly, which comprises a connecting rod (1) and a fixing sleeve (2), wherein the fixing sleeve (2) is fixedly sleeved on the connecting rod (1), and one end of the fixing sleeve (2) is provided with a flange (2a). The automobile shock absorber connecting rod subassembly is characterized in that a ring-shaped channel is arranged on the connecting rod (1), the fixing sleeve (2) and the ring-shaped channel are embedded and fixed through pressing and riveting, and one end of the fixing sleeve (2) faraway from the flange(2a) is contacted with the lateral wall of the ring-shaped channel. The automobile shock absorber connecting rod subassembly has high tensile strength, and can satisfy the design requirements of loaded car products, the size of the length of the fixing sleeve is small, the stroke of a shock absorber can be reliably guaranteed under the condition that the inner cavity of the cylinder of the shock absorber is smaller, and the automobile shock absorber connecting rod subassembly has little materials for the fixing sleeve, wide material selection range, relatively low requirements on equipment andfrocks which are processed through pressing and riveting, and greatly lowers production cost.
Description
Technical field
The utility model relates to vehicle shock absorber, relates in particular to a kind of vehicle shock absorber connecting rod sub-assembly.
Background technique
At present, vibration damper the most frequently used on the automobile mostly is double adjustable shock absorber greatly, the working procedure that is such vibration damper is divided into compression and upholds two strokes, and attenuation vibration rapidly can wait to improve ride of vehicle when the rough road surface of vehicle encounters.Therefore, in vibration damper design, the compression and the design of upholding two dimensional parameters are just seemed particularly important, and the overall dimensions that the stretch measure of vibration damper is a connecting rod pulls out from fuel tank is normally by the determining positions of fixed cover on the connecting rod, the fixing connecting rod sub-assembly of forming of fixed cover and connecting rod, one end of fixed cover is provided with flange, cushion pad also is housed on connecting rod, and cushion pad is positioned at flange one side of fixed cover.Vibration damper is when upholding the recovery stroke; connecting rod is up, begins to bear pressure behind the guide holder of upper end in the cushion pad contact fuel tank on the connecting rod, and pressure is delivered on the fixed cover by cushion pad; limiting rod continues up, thereby the piston sub-assembly of protection connecting rod lower end is not damaged.
When automobile has relatively poor road surface in the process of moving, vibration damper meets or exceeds maximum stretched dimension through regular meeting, and the fixed cover on connecting rod will be subjected to very big pulling force like this, just the intensity of fixed cover is had higher requirement.At present, the fixed cover that most of vibration damper adopted is a stamping part, fixed cover is fixed on the connecting rod by the mode of spot welding, the connecting rod sub-assembly of this welding type, must meet the following conditions when designs fix cover and connecting rod size: 1, the material of fixed cover and connecting rod must be selected the material of welding performance and better mechanical property for use, to guarantee the welding performance of fixed cover; 2, for guaranteeing that fixed cover can be welded on the connecting rod, the length dimension of the little shaft part of fixed cover must be greater than the welding electrode size; 3, the material thickness of fixed cover can not be too thick, otherwise can cause the welding heat deficiency; The material thickness of fixed cover can not be too thin, otherwise can cause heat too big and with the fixed cover burn through; 4, when carrying out spot welding, must protect rod surface, to prevent that spatter from ablating and the scuffing rod surface; 5, for guaranteeing weldability, the material of fixed cover often adopts low carbon steel, and its tensile strength is relatively poor, and the distortion of stressed back is bigger; Spot welding frock when 6, welding is a chromium zirconium copper product, and cost is very high.Because due to above-mentioned the 2nd condition, the little shaft part length of fixed cover often is 10～13mm, its total length reaches 12～15mm after adding upper flange, guaranteeing under the welding performance prerequisite at the same time, the little shaft part thickness of fixed cover is about 1.5mm, at the fixed cover and the lever point postwelding that satisfy under this length and the thickness condition, its tensile strength is about 25000N.Most connecting rod sub-assemblys that all adopt this welding manner because this kind vibration damper axial dimension is long, have enough spaces to hold the fixed cover of this longer dimension on the vibration damper of the front and back of independent suspension.But since in recent years, along with the continuous development of loaded vehicle operator cabin vibration damper, we find that the connecting rod sub-assembly of the type welding manner can not reach the designing requirement of product.At first, because the operator cabin vibration damper is less, the holding space in the cylinder barrel is little; Secondly, heavy goods vehicles is much bigger than car to the requirement of intensity, and adopts the tensile strength of welding type connecting rod sub-assembly can not surpass 30000N, can not satisfy the usage requirement of loaded vehicle product.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of vehicle shock absorber connecting rod sub-assembly, it not only tensile strength height, fixed cover not yielding, come off, and the length dimension of fixed cover is little, can guarantee the vibration damper stroke reliably under the less condition of vibration damper inner cavity of cylinder.
The technical solution of the utility model is as follows: a kind of vehicle shock absorber connecting rod sub-assembly, comprise connecting rod and fixed cover, described fixed cover is solidly set on the described connecting rod, this fixed cover one end is provided with flange, described connecting rod is provided with annular groove, described fixed cover is by pressing and described annular groove tabling is fixed, and described fixed cover is inconsistent away from the sidewall of end of described flange and described annular groove.
Described annular groove on the described connecting rod is the taper annular groove, the small end of described taper annular groove and this annular groove sidewall formation shaft shoulder that joins, and the external cylindrical surface of its big end and described connecting rod joins.
Arc transition between the small end of described taper annular groove and the described annular groove sidewall.
The angle of the cone element of described taper annular groove and connecting rod axis is 10 °～15 °.
Described fixed cover is that machine adds part, and its part was the little shaft part of taper after this fixed cover and described connecting rod pressed, and another part is a flange.
Described fixed cover length overall is 4～7mm.
Fixed cover of the present utility model and connecting rod employing press-fit the riveted mode and fix, by annular groove is set on connecting rod, with the oil hydraulic press and the little shaft part extrusion-deformation of frock that presses with fixed cover, the part inner hole wall of fixed cover is pressed to be entrenched in the annular groove of connecting rod, thereby make both fastening, when the flange of fixed cover is stressed, because the other end of fixed cover can be against on the sidewall of annular groove, strengthened the tensile strength of connecting rod sub-assembly greatly, tensile strength after its riveted joint can satisfy the designing requirement of loaded vehicle product fully more than 45000N; Annular groove can also play the role of positioning to fixed cover on the connecting rod, has guaranteed the tram of fixed cover on connecting rod reliably, has avoided in prior welding mode, causes fixed cover off normal on connecting rod to cause the problem of waste product because of welding tooling misplaces or is out of shape.
Because without welding manner, do not need to design the length dimension of fixed cover greater than the welding electrode size, just fixed cover can be shortened design on length dimension, the minimum overall length of fixed cover can contract to 4mm, thereby reliably guarantee the stroke of product, also save the material of using of fixed cover simultaneously, reduced manufacture cost; The mode of pressing is processed, and the spark in the time of can not producing welding splashes, and the connecting rod chrome-plated surface can not produce quality problems such as ablation and scuffing, has reduced the work for inspection amount of rod surface quality, has eliminated the hidden danger of quality of product, favourable improving the quality of products; The formula that presses connects, and only needs to adopt the general oil hydraulic press and the frock that presses of carbon steel material to realize, does not need the welding tooling of dedicated points welding machine and chromium zirconium copper, produces the cost that drops into and reduces greatly.In addition, if fixed cover machining is made, can require to determine the material trademark and the part thickness of fixed cover according to tensile strength, so that the tensile strength of connecting rod sub-assembly is better, and the material of fixed cover had only specific elongation and mechanical property requirement, thereby comparatively loose aspect the fixed cover selection, thereby can reduce cost of material.
The beneficial effects of the utility model are:
1, the fixed cover length dimension is little, under the less condition of vibration damper inner cavity of cylinder, can guarantee the vibration damper stroke reliably, has also saved the material of using of fixed cover simultaneously, reduces manufacture cost;
2, the tensile strength of connecting rod sub-assembly strengthens greatly, can satisfy the designing requirement of loaded vehicle product fully
3, annular groove can also play the role of positioning to fixed cover on the connecting rod, has guaranteed the tram of fixed cover on connecting rod reliably;
4, reduced the work for inspection amount of rod surface quality, the rod surface quality is improved, and has eliminated the hidden danger of quality of product;
5, can determine the material trademark and the part thickness of fixed cover according to the requirement of tensile strength, and the material of fixed cover is had only specific elongation and mechanical property requirement, the fixed cover selection range is wide, thereby can reduce cost of material;
6, equipment and frock require lowly, the cost that produce to drop into also reduces greatly.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is the partial enlarged drawing of connecting rod among Fig. 1;
Work schematic representation when Fig. 4 presses for the utility model;
Fig. 5 is the partial enlarged drawing of Fig. 4.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 1 to Figure 3, the utility model is a kind of vehicle shock absorber connecting rod sub-assembly, is made up of connecting rod 1 and fixed cover 2.Wherein, connecting rod 1 is provided with annular groove, this annular groove is a taper annular groove 11, the small end of taper annular groove 11 and this annular groove sidewall 11a formation shaft shoulder that joins, between the small end of taper annular groove 11 and annular groove sidewall 11a, arc transition is arranged, the big end of taper annular groove 11 and the external cylindrical surface of connecting rod 1 join, and the angle of the cone element of taper annular groove 11 and connecting rod 1 axis is 13 °.The annular groove of taper is convenient to fixed cover 2 and is pressed in the groove, and fixed cover 2 is that single load bearing is so only an annular groove sidewall need be set gets final product load; Arc transition between the small end of taper annular groove 11 and the annular groove sidewall 11a can prevent that stress is concentrated, also reduces difficulty of processing simultaneously.Fixed cover 2 is that the machine of 35 steel adds part, and machine adds the wall thickness that part can increase part, so that the tensile strength of connecting rod sub-assembly is better, by taper annular groove 11 tablings on press back fixed cover 2 and the connecting rod 1, thereby is solidly set on the connecting rod 1.Its part was the little shaft part 2b of taper after this fixed cover 2 pressed with connecting rod 1, and another part is flange 2a, and the length overall of fixed cover 2 is 5.5mm, the long 2.5mm of little shaft part 2b, wall thickness 2mm.Fixed cover 2 is inconsistent away from the annular groove sidewall 11a of the end of flange 2a and connecting rod 1 upper conical annular groove 11, when the flange 2a of fixed cover 2 is stressed, the other end of fixed cover 2 and annular groove sidewall 11a offset, strengthened the bearing capacity of fixed cover 2 greatly, the tensile strength of connecting rod sub-assembly is improved, and the tensile strength after its riveted joint is more than 45000N.
As shown in Figure 4 and Figure 5, when the connecting rod sub-assembly presses, it is contained in the frock 3 that presses, the frock that presses 3 is made up of pressure head 31, locating column 32, fixed plate 33, back tightening nut 34, blind nut 35 and spacer 36.Wherein, pressure head 31 and locating column 32 are hollow shaft, both coaxial lines are installed, pressure head 31 is installed on the drift of oil hydraulic press (also can be other press machine), one step is arranged on the cylindrical of locating column 32, be installed with fixed plate 33 at this step place, fixed plate 33 is by the stationary table of bolt and oil hydraulic press, the worktable below of oil hydraulic press is stretched in the middle and lower part of locating column 32, outside thread and suit back tightening nut 34 and blind nut 35 are successively arranged in the bottom of locating column 32, and blind nut 35 is with the lower end closed of locating column 32.In the endoporus of locating column 32 bottom spacer 36 is housed, connecting rod 1 is contained in the hole of locating column 32, the end that connecting rod 1 is used to install piston up, its lower end is placed on the spacer 36.From Fig. 4, can see, the endoporus lower end of pressure head 31 is the horn mouth 31a of circular cone, the angle of its cone element and interior axially bored line is 45 °～70 °, the end face of locating column 32 reclines mutually with the flange 2a end of fixed cover 2, the little shaft part 2b of fixed cover 2 and taper annular groove 11 small ends on the connecting rod 1 are upwards, when pressure head 31 presses down, the horn mouth 31a of pressure head 31 is with the little shaft part 2b extrusion-deformation of fixed cover 2, the inner hole wall of fixed cover 2 middle and upper parts is pressed in the taper annular groove 11 that is entrenched in connecting rod 1, thereby make both fastening.Spacer 36 is according to the different model of product, be furnished with a plurality of, it is used to adjust the distance that the annular groove sidewall 11a of connecting rod 1 taper annular groove 11 stretches out locating column 32 end faces, this distance will adapt with the length overall of fixed cover 2, fixed cover 2 could be pressed in the taper annular groove 11, the end face of little shaft part 2b of fixed cover 2 and the annular groove sidewall 11a of connecting rod 1 upper conical annular groove 11 are offseted.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. vehicle shock absorber connecting rod sub-assembly, comprise connecting rod (1) and fixed cover (2), described fixed cover (2) is solidly set on the described connecting rod (1), these fixed cover (2) one ends are provided with flange (2a), it is characterized in that: described connecting rod (1) is provided with annular groove, described fixed cover (2) is by pressing and described annular groove tabling is fixed, and described fixed cover (2) is inconsistent away from the sidewall of end of described flange (2a) and described annular groove.
2. a kind of vehicle shock absorber connecting rod sub-assembly according to claim 1, it is characterized in that: the described annular groove on the described connecting rod (1) is taper annular groove (11), the small end of described taper annular groove (11) and this annular groove sidewall (11a) the formation shaft shoulder that joins, the external cylindrical surface of its big end and described connecting rod (1) joins.
3. a kind of vehicle shock absorber connecting rod sub-assembly according to claim 2 is characterized in that: arc transition between the small end of described taper annular groove (11) and the described annular groove sidewall (11a).
4. according to claim 2 or 3 described a kind of vehicle shock absorber connecting rod sub-assemblys, it is characterized in that: the angle of the cone element of described taper annular groove (11) and connecting rod (1) axis is 10 °～15 °.
5. a kind of vehicle shock absorber connecting rod sub-assembly according to claim 1, it is characterized in that: described fixed cover (2) adds part for machine, its part was that the little shaft part (2b) of taper, another part are flange (2a) after this fixed cover (2) pressed with described connecting rod (1).
6. a kind of vehicle shock absorber connecting rod sub-assembly according to claim 5 is characterized in that: described fixed cover (2) length overall is 4～7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203033482U CN201428771Y (en) | 2009-05-20 | 2009-05-20 | Automobile shock absorber connecting rod subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203033482U CN201428771Y (en) | 2009-05-20 | 2009-05-20 | Automobile shock absorber connecting rod subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201428771Y true CN201428771Y (en) | 2010-03-24 |
Family
ID=42032508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203033482U Expired - Fee Related CN201428771Y (en) | 2009-05-20 | 2009-05-20 | Automobile shock absorber connecting rod subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201428771Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630966A (en) * | 2017-11-03 | 2018-01-26 | 河南天减振器科技有限公司 | The attachment means of shock absorber support ring and connecting rod |
| CN113602408A (en) * | 2021-09-15 | 2021-11-05 | 常州开发减震器有限公司 | Front fork tube for shock absorber and manufacturing method thereof |
-
2009
- 2009-05-20 CN CN2009203033482U patent/CN201428771Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630966A (en) * | 2017-11-03 | 2018-01-26 | 河南天减振器科技有限公司 | The attachment means of shock absorber support ring and connecting rod |
| CN113602408A (en) * | 2021-09-15 | 2021-11-05 | 常州开发减震器有限公司 | Front fork tube for shock absorber and manufacturing method thereof |
| CN113602408B (en) * | 2021-09-15 | 2022-11-01 | 常州开发减震器有限公司 | Front fork tube for shock absorber and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100324 Termination date: 20120520 |