CN220849308U - Buffer rod - Google Patents
Buffer rod Download PDFInfo
- Publication number
- CN220849308U CN220849308U CN202322601832.6U CN202322601832U CN220849308U CN 220849308 U CN220849308 U CN 220849308U CN 202322601832 U CN202322601832 U CN 202322601832U CN 220849308 U CN220849308 U CN 220849308U
- Authority
- CN
- China
- Prior art keywords
- piston
- elastic sheet
- buffer rod
- rod
- connecting column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001746 injection moulding Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 3
- 230000003139 buffering effect Effects 0.000 description 4
- 229930040373 Paraformaldehyde Natural products 0.000 description 3
- 229920006324 polyoxymethylene Polymers 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polyoxymethylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses a buffer rod capable of automatically adjusting oil passing quantity along with the change of impact speed of a piston rod through an oil hole. The technical scheme includes that the cylinder body, the piston rod arranged in the cylinder body and the piston arranged at the front end of the piston rod are arranged, the front end of the piston is provided with the elastic sheet through a connecting column formed by integral injection molding, the elastic sheet can axially move on the connecting column, the front end face of the piston is provided with a groove, and symmetrical through holes are arranged at two ends of the groove.
Description
Technical Field
The present utility model relates to a buffer rod.
Background
The small buffer rod can be used for buffering the sliding door and structurally comprises a cylinder body, a piston arranged in the cylinder body and a piston rod connected with the piston, damping oil (silicone oil) is filled in the cylinder body, at least one oil passing hole is formed in the piston, and two ends of the cylinder body are sealed. The working principle is as follows: under the action of external force, the piston rod moves into the cylinder body, and damping oil quickly passes through the narrow oil passing hole, so that larger resistance is generated. The disadvantages are: the oil passing hole can not adjust the oil passing amount (namely, the buffer force can not be automatically adjusted) along with the change of the impact speed of the piston rod, so that the buffer of different loads can not be self-adapted, the application range is small, and the buffer is easy to damage.
Disclosure of utility model
The utility model aims to solve the technical problem of providing a buffer rod capable of automatically adjusting oil passing amount along with the change of the impact speed of a piston rod through an oil passing hole.
In order to solve the technical problems, the technical scheme comprises a cylinder body, a piston rod arranged in the cylinder body and a piston arranged at the front end of the piston rod, and is characterized in that: the front end of the piston is provided with an elastic sheet through a connecting column formed by integral injection molding, the elastic sheet can axially move on the connecting column, the front end face of the piston is provided with a groove, and symmetrical through holes are formed at two ends of the groove.
The buffer rod is characterized in that: the connecting column comprises an installation part and a riveting part, wherein the elastic sheet is arranged on the installation part and is riveted and fixed through the riveting part.
The buffer rod is characterized in that: the elastic sheet is 0.4mm-0.6mm in thickness and 0.5mm-0.7mm in distance on the movement of the connecting column.
The buffer rod is characterized in that: the piston and the spring plate are both made of POM materials.
The buffer rod is characterized in that: the rear end face of the piston is provided with two symmetrical material stealing grooves.
The buffer rod is characterized in that: the other end of the piston rod is provided with a sealing body and an end cover which are in sealing fit with the cylinder body, and a reset spring is arranged between the sealing body and the end cover.
The buffer rod is characterized in that: the elastic sheet is round, and the outer diameter is smaller than the outer diameter of the piston.
The buffer rod is characterized in that: and two sides of the groove are in smooth transition through the arc-shaped concave surfaces.
The buffer rod of the present utility model has the advantages: the elastic sheet capable of axially moving is arranged at the front end of the piston, when the piston rod is impacted forward at a higher speed, the elastic sheet is closer to the through hole (namely the oil passing hole), so that the oil passing amount of the through hole is reduced, the buffering force can be improved, and the buffering of different loads is adapted; when the piston rod is pulled out, the elastic sheet is far away from the through hole, and the oil passing amount of the through hole is the largest at the moment, so that the piston rod can be pulled out easily.
The utility model will be described in further detail with reference to the drawings and the detailed description.
Drawings
FIG. 1 is a cross-sectional view of a buffer rod of the present utility model;
FIG. 2 is a schematic view of the piston of the present utility model;
FIG. 3 is an exploded view of the piston of the present utility model;
Fig. 4 is a schematic view of the back structure of the piston of the present utility model.
Detailed Description
As shown in fig. 1 to 4, the buffer rod of the present utility model includes a cylinder 1, a piston rod 2 provided in the cylinder 1, and a piston 3 provided at the front end of the piston rod 2. The front end of the piston 3 is provided with an elastic sheet 5 through a connecting column 4 formed by integral injection molding, the elastic sheet 5 can axially move on the connecting column 4, the front end face of the piston 3 is provided with a groove 6, and the piston 3 is provided with symmetrical through holes 7 corresponding to the two ends of the groove 6. The piston 3 is in pressure connection with the front end of the piston rod 2, and is clamped with the clamping groove 16 at the front end of the piston rod 2 through the flange 15 in the mounting hole at the rear end of the piston 3, so that firm connection is realized.
Preferably, the connecting post 4 includes a mounting portion 8 and a caulking portion 9, and the elastic piece 5 is sleeved on the mounting portion 8 and can move axially, and is fixed by caulking through the caulking portion 9. Specifically, the riveting portion 9 is fixed to the elastic sheet 5 by hot-melt riveting. By adopting the connecting mode, the connecting device has the advantages of firm structure, good stability and easy processing.
Preferably, the piston 3 and the elastic sheet 5 are made of POM (polyoxymethylene) material, and the thickness of the elastic sheet is 0.4mm-0.6mm, and ideally 0.5mm, so that the elastic sheet 5 has proper elasticity, and can throttle and reset the through hole better. The distance of the elastic piece 5 on the connecting column 4 is 0.5mm-0.7mm, the ideal distance is 0.6mm, namely, when the piston rod is pulled out, the ideal distance of the elastic piece away from the through hole is 0.6mm, so that the through hole can be ensured to have enough opening, and the elastic piece can be quickly reset when the plug rod is pressed forwards.
Preferably, the rear end surface of the piston 3 is provided with two symmetrical material stealing slots 14, so-called "material stealing" is commonly known in the industry, i.e. a part of material is dug out from the rear end surface of the piston 3 to form a groove, and the groove is similar or identical to the through hole 7 in size and shape and is uniformly arranged on the rear end surface of the piston 3. After the injection molding of the piston 3 is completed, the internal stress is more balanced, and the deformation caused by unbalanced internal stress in the cooling process is prevented.
Preferably, the other end of the piston rod 2 is provided with a sealing body 10 and an end cover 11 which are in sealing fit with the cylinder body 1, and a return spring 12 is arranged between the sealing body 10 and the end cover 11 and is used for sealing the rear end of the cylinder body 1 and buffering the piston rod 2 after being pulled out in place.
Preferably, the elastic piece 5 is circular, and the outer diameter is slightly smaller than the outer diameter of the piston 3. With the above structure, the movement, the resetting and the deformation of the elastic sheet 5 can be easier.
Preferably, the two sides of the groove 6 are smoothly transited through the arc concave 13, so that the elastic sheet 5 can be better attached to the arc concave 13 after being deformed.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (8)
1. The utility model provides a buffer rod, includes cylinder body (1), establishes be equipped with piston rod (2) and establish in cylinder body (1) piston (3) of piston rod (2) front end, its characterized in that: the front end of the piston (3) is provided with an elastic sheet (5) through a connecting column (4) formed by integral injection molding, the elastic sheet (5) can axially move on the connecting column (4), the front end face of the piston (3) is provided with a groove (6), and symmetrical through holes (7) are formed in two ends of the groove (6) correspondingly.
2. The buffer rod of claim 1, wherein: the connecting column (4) comprises an installation part (8) and a riveting part (9), and the elastic sheet (5) is arranged on the installation part (8) and is riveted and fixed through the riveting part (9).
3. The buffer rod of claim 1, wherein: the elastic sheet (5) is 0.4mm-0.6mm in thickness and 0.5mm-0.7mm in distance on the movement of the connecting column (4).
4. The buffer rod of claim 1, wherein: the piston (3) and the spring plate (5) are both made of POM materials.
5. The buffer rod of claim 1, wherein: the rear end face of the piston (3) is provided with two symmetrical stealing tanks (14).
6. The buffer rod of claim 1, wherein: the other end of the piston rod (2) is provided with a sealing body (10) and an end cover (11) which are in sealing fit with the cylinder body (1), and a return spring (12) is arranged between the sealing body (10) and the end cover (11).
7. The buffer rod of claim 1, wherein: the elastic sheet (5) is round, and the outer diameter of the elastic sheet is smaller than that of the piston (3).
8. The buffer rod of claim 1, wherein: the two sides of the groove (6) are in smooth transition through an arc-shaped concave surface (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322601832.6U CN220849308U (en) | 2023-09-25 | 2023-09-25 | Buffer rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322601832.6U CN220849308U (en) | 2023-09-25 | 2023-09-25 | Buffer rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220849308U true CN220849308U (en) | 2024-04-26 |
Family
ID=90788366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322601832.6U Active CN220849308U (en) | 2023-09-25 | 2023-09-25 | Buffer rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220849308U (en) |
-
2023
- 2023-09-25 CN CN202322601832.6U patent/CN220849308U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |