CN203463541U - Nitrogen spring without guide seat - Google Patents
Nitrogen spring without guide seat Download PDFInfo
- Publication number
- CN203463541U CN203463541U CN201320569786.XU CN201320569786U CN203463541U CN 203463541 U CN203463541 U CN 203463541U CN 201320569786 U CN201320569786 U CN 201320569786U CN 203463541 U CN203463541 U CN 203463541U
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- CN
- China
- Prior art keywords
- cylinder
- slide bar
- piston rod
- cylinder body
- base
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- Expired - Lifetime
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Abstract
A nitrogen spring without a guide seat comprises a vertically through cylinder and a piston rod penetrating into the cylinder from the lower end of the cylinder, wherein the cylinder comprises an upper cylinder cavity and a lower cylinder cavity, and the diameter of the lower cylinder cavity is larger than that of the upper cylinder cavity; the piston rod comprises an upper slide bar and a lower slide bar, the diameter of the lower slide bar is larger than that of the upper slide bar, the upper slide bar is in sliding fit with the cupper cylinder cavity, and the lower slide bar slides in the lower cylinder cavity; and the lower end of the cylinder is fixedly connected with a base, and an inflation valve is arranged on the base. According to the nitrogen spring, the piston rod penetrates into the cylinder from the lower end of the cylinder, the upper end of the lower slide bar of the piston rod is abutted against the lower end of the upper cylinder cavity in the cylinder, and the base is fixedly connected to the lower end of the cylinder, so that nitrogen can be inflated through the inflation valve on the base, the inflation valve is not required to be built in the side wall of the cylinder directly, the piston rod is not required to be placed into the cylinder from the upper end of the cylinder, the guide seat is not required to be placed between the piston rod and the cylinder for reinforce and fixation, therefore, the size of the cylinder cannot be increased, and the nitrogen spring can be used in a mold environment with narrow space.
Description
Technical field
The utility model relates to a kind of nitrogen spring, relates in particular to a kind of nitrogen spring that does not contain guide holder.
Background technique
Traditional nitrogen spring is all embedding structure; gas charging valve is directly built on cylinder side wall, and piston rod is inserted from cylinder body upper end, for guaranteeing the stability of piston rod; just need between piston rod and cylinder body, implant guide holder, guide holder is as the fixing device to piston rod.But, due to the existence of guide holder, cause the volume of cylinder body to increase, cannot meet the very tight mold environment of spatial requirement.
Model utility content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of not containing the nitrogen spring of guide holder, and it can be for the mold environment of narrow space.
The utility model is to realize like this, a kind of nitrogen spring that does not contain guide holder, the cylinder body and one that comprises a up/down perforation penetrates the piston rod in described cylinder body from described cylinder body lower end, described cylinder body comprises a upper cylinder half chamber and cylinder chamber once, the diameter in described lower cylinder chamber is greater than the diameter in described upper cylinder half chamber, described piston rod comprises a upper slide bar and a lower slide bar, the diameter of described lower slide bar is greater than the diameter of described upper slide bar, described upper slide bar and described upper cylinder half chamber are slidably matched, described lower slide bar slides in described lower cylinder chamber, described cylinder body lower end is fixedly connected with a base, described base is provided with a gas charging valve.
Further, the cooperation place between described cylinder body and base is provided with a seal ring.
Further, on described base, offer a plurality of installation screws.
Further, the upper cylinder half chamber of described cylinder body and the cooperation place between the upper slide bar of described piston rod are provided with a dust ring, one first guide ring, a back-up ring, a primary seal circle and one second guide ring from top to bottom successively.
Piston rod of the present utility model penetrates from cylinder body lower end, the lower slide bar upper end of piston rod and lower end, the upper cylinder half chamber butt in cylinder body, again base is fixedly connected on to cylinder body lower end, just can be by the gas charging valve inflated with nitrogen on base, gas charging valve directly need not be built on the sidewall of cylinder body, piston rod also need not be inserted from cylinder body upper end, need between piston rod and cylinder body, not implant guide holder strengthens fixing, therefore, can not increase the volume of cylinder body, thereby can make nitrogen spring of the present utility model for the mold environment of narrow space.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical solution of the utility model, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of schematic diagram that does not contain the nitrogen spring of guide holder that the utility model embodiment provides;
A kind of cylinder body of nitrogen spring and schematic diagram of base that does not contain guide holder that Fig. 2 the utility model embodiment provides;
A kind of piston rod schematic diagram that does not contain the nitrogen spring of guide holder that Fig. 3 the utility model embodiment provides.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is clearly and completely described.
As shown in FIG. 1 to 3, a kind of nitrogen spring that does not contain guide holder that the utility model embodiment provides, the cylinder body 1 and one that comprises a up/down perforation penetrates the piston rod 2 in cylinder body 1 from cylinder body 1 lower end, cylinder body 1 comprises a upper cylinder half chamber 11 and cylinder chamber 12 once, the diameter in lower cylinder chamber 12 is greater than the diameter in upper cylinder half chamber 11, piston rod 2 comprises a upper slide bar 21 and a lower slide bar 22, the diameter of lower slide bar 22 is greater than the diameter of upper slide bar 21, upper slide bar 21 is slidably matched with upper cylinder half chamber 11, lower slide bar 22 is in the 12 interior slips of lower cylinder chamber, cylinder body 1 lower end is fixedly connected with a base 3, base 3 is provided with a gas charging valve 31.
Working principle of the present utility model is: first, piston rod 2 is penetrated from cylinder body 1 lower end, and then, piston rod 2 upwards slides into certain position in cylinder body 1, lower slide bar 22 upper ends of piston rod 2 and the upper cylinder half chamber 11 lower end butts in cylinder body 1, piston rod 2 stops to front slide; Then, again base 3 is fixedly connected on to cylinder body 1 lower end, at this moment, a space is formed on lower slide bar 22 bottoms of base 3 and piston rod 2, space inflated with nitrogen by from the gas charging valve 31 on base 3 to the lower slide bar 22 bottoms formation of base 3 and piston rod 2, when the nitrogen filling reaches certain highpressure, nitrogen forms the bottom that a kind of powerful thrust making progress imposes on piston rod 2, makes tightly butt of the upper end of lower slide bar 22 of piston rod 2 and 11 lower ends, upper cylinder half chamber in cylinder body 1.When piston rod 2 is subject to extraneous pressure, ambient pressure can be by the nitrogen compression in cylinder body 1; When piston rod 2 is not reduced by ambient pressure or ambient pressure, the high pressure nitrogen in cylinder body 1 expands, and makes piston rod 2 obtain certain elastic force making progress.
Compared with prior art, piston rod 2 of the present utility model penetrates from cylinder body 1 lower end, lower slide bar 22 upper ends of piston rod 2 and the upper cylinder half chamber 11 lower end butts in cylinder body 1, again base 3 is fixedly connected on to cylinder body 1 lower end, just can be by gas charging valve 31 inflated with nitrogen on base 3, gas charging valve 3 directly need not be built on the sidewall of cylinder body 1, piston rod 2 also need not be inserted from cylinder body 1 upper end, need between piston rod 2 and cylinder body 1, not implant guide holder (illustrating) strengthens fixing, therefore, nitrogen spring of the present utility model can not increase the volume of cylinder body 1, thereby can make nitrogen spring for the mold environment of narrow space.
Further, the cooperation place between described cylinder body 1 bottom and base 3 is provided with a seal ring 32, and seal ring 32 is sealed and matched between cylinder body 1 bottom and base 3 for making.
Further, offer a plurality of installation screws 34 on described base 3, installation screw 34 is for being installed to miscellaneous part base 3.
Further, the cooperation place between the upper cylinder half chamber 11 of described cylinder body 1 and the upper slide bar 21 of piston rod 2 is provided with a dust ring 13, one first guide ring 14, a back-up ring 15, a primary seal circle 16 and one second guide ring 17 from top to bottom successively.Wherein, dust ring 13 enters in cylinder body 1 for preventing extraneous dust, the first guide ring 14 and the second guide ring 17 are lubricated and lead for the upper slide bar 21 to piston rod 2, back-up ring 15 can fixedly positioning primary seal circle 16, and primary seal circle 16 is sealed and matched between the upper cylinder half chamber 11 of cylinder body 1 and the upper slide bar 21 of piston rod 2 for making.
Further, described piston rod 2 upper ends offer an assembling screw 23, and assembling screw 23 is for being installed to miscellaneous part in piston rod 2.
The above is preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection domain of the present utility model.
Claims (4)
1. one kind containing the nitrogen spring of guide holder, it is characterized in that, the cylinder body and one that comprises a up/down perforation penetrates the piston rod in described cylinder body from described cylinder body lower end, described cylinder body comprises a upper cylinder half chamber and cylinder chamber once, the diameter in described lower cylinder chamber is greater than the diameter in described upper cylinder half chamber, described piston rod comprises a upper slide bar and a lower slide bar, the diameter of described lower slide bar is greater than the diameter of described upper slide bar, described upper slide bar and described upper cylinder half chamber are slidably matched, described lower slide bar slides in described lower cylinder chamber, described cylinder body lower end is fixedly connected with a base, described base is provided with a gas charging valve.
2. a kind of nitrogen spring that does not contain guide holder according to claim 1, is characterized in that, the cooperation place between described cylinder body and base is provided with a seal ring.
3. a kind of nitrogen spring that does not contain guide holder according to claim 1, is characterized in that, offers a plurality of installation screws on described base.
4. according to claim 1 a kind of not containing the nitrogen spring of guide holder, it is characterized in that, the upper cylinder half chamber of described cylinder body and the cooperation place between the upper slide bar of described piston rod are provided with a dust ring, one first guide ring, a back-up ring, a primary seal circle and one second guide ring from top to bottom successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320569786.XU CN203463541U (en) | 2013-09-12 | 2013-09-12 | Nitrogen spring without guide seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320569786.XU CN203463541U (en) | 2013-09-12 | 2013-09-12 | Nitrogen spring without guide seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463541U true CN203463541U (en) | 2014-03-05 |
Family
ID=50175908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320569786.XU Expired - Lifetime CN203463541U (en) | 2013-09-12 | 2013-09-12 | Nitrogen spring without guide seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105309A (en) * | 2016-11-24 | 2018-06-01 | 江苏耐玛鑫精密机械有限公司 | A kind of nitrogen gas spring of separate type piston cylinder housing convenient for manufacture |
-
2013
- 2013-09-12 CN CN201320569786.XU patent/CN203463541U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105309A (en) * | 2016-11-24 | 2018-06-01 | 江苏耐玛鑫精密机械有限公司 | A kind of nitrogen gas spring of separate type piston cylinder housing convenient for manufacture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140305 |
|
| CX01 | Expiry of patent term |