CN2578393Y - Locking mechanism of spring arm - Google Patents
Locking mechanism of spring arm Download PDFInfo
- Publication number
- CN2578393Y CN2578393Y CN 02260451 CN02260451U CN2578393Y CN 2578393 Y CN2578393 Y CN 2578393Y CN 02260451 CN02260451 CN 02260451 CN 02260451 U CN02260451 U CN 02260451U CN 2578393 Y CN2578393 Y CN 2578393Y
- Authority
- CN
- China
- Prior art keywords
- spring arm
- manhole cover
- projection
- well lid
- well ring
- 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.)
- Ceased
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Abstract
The utility model aims to design a locking mechanism of a spring arm. The utility model is mainly used for a manhole cover. An external force (external force such as the force of a foot stepping on the manhole cover) is exerted on the manhole cover after the manhole cover is positioned on a well ring under the action of an elastic spring arm fixedly arranged at the lower part of the manhole cover and convex blocks at one end of the spring arm and a side frame of the well ring, and the convex blocks of the spring and the convex blocks of the well ring are mutually buckled for locking the manhole cover and the well ring. Therefore, the manhole cover and the well ring can be only separated under the action of a cover opener (such as a pry bar, etc.), and the serious accident that the manhole cover is carried away from the well ring by the violent flow of air when a heavy truck passes through at a high speed in daily traffic is prevented. The utility model has the advantages of simple and skillful design, low cost and high reliability.
Description
(1) technical field
The utility model relates to a kind of spring arm retaining mechanism that is used for inspection shaft.
(2) background technology
For a long time, employed inspection shaft lid existed a problem all the time during at home and abroad town road was built, and promptly was seated at the well lid of walling crib, can because violent the flowing of heavy goods vehicle air cross at a high speed the time and with the well lid band from walling crib, cause serious accident.This is because there is not a kind of retaining mechanism that both are fixed between well lid and walling crib, so aforesaid situation can take place.
(3) utility model content
The purpose of this utility model provides a kind of spring arm retaining mechanism, the well lid and the walling crib of inspection shaft can be locked mutually violent the flowing of air in the time of can not crossing because of automobile high-speed and well lid is started.
For reaching above-mentioned purpose, spring arm retaining mechanism of the present utility model is used to lock walling crib and the well lid that is seated on the walling crib, it is characterized in that described well lid below also is installed with at least one spring arm, one end of described spring arm is a projection, and described projection is provided with upper and lower two inclined-planes; Be a projection on the frame of described walling crib, described projection also is provided with upper and lower two inclined-planes; The lower inclined plane of the ramp of described spring arm projection and described walling crib frame projection is bordered to cooperate when well lid closes and two projections can be detained mutually establish.
After adopting such structure, after well lid is seated at walling crib, apply an external force (as the well lid that tramps with one's feet) on well lid, by being installed in the resilient spring arm of well lid below, make the lower inclined plane of projection of spring arm and relative slip of ramp of the projection of walling crib frame, and the ramp of spring arm projection is contacted with the lower inclined plane of the projection of walling crib frame and mutually button establish and well lid and walling crib locked.
For further specifying above-mentioned purpose of the present utility model, design feature and effect, the utility model is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is the longitudinal sectional view according to the utility model spring arm retaining mechanism.
(5) specific embodiment
Be illustrated in figure 1 as the longitudinal sectional view of spring arm retaining mechanism of the present utility model, walling crib 6 is seated on the well lid 4, and the below of well lid 6 is installed with a spring arm 1, and an end of spring arm 1 is a projection 2, and a ramp 7 and lower inclined plane 9 are arranged on the projection 2; Also be provided with a projection 3 on the frame of walling crib 4, also be provided with a ramp 10 and lower inclined plane 8 on the projection 3.The inclined- plane 7,8 of two projections 2,3 is bordered to cooperate and two projections 2,3 can be detained mutually establish.
When the well lid 6 that closes makes it be seated at walling crib 4, the ramp 10 of the projection 3 on the lower inclined plane 9 of the projection 2 of spring arm 1 and walling crib 4 frames contacts, apply an external force (as the well lid 6 that tramps with one's feet) this moment on well lid 6, by being installed in the resilient spring arm 1 of well lid 6 belows, the projection 2 that makes spring arm 1 slides along producing relatively between the ramp 10 of lower inclined plane 9 and walling crib 4 projections 3, make projection 2 final descending and by inclined-plane 7 (8) make projection 2 and projection 3 mutually button establish and well lid 6 and walling crib 4 locked.So only under the effect of the instrument of uncapping (as crow bar etc.), by above-mentioned same principle but opposite process well lid 6 could be separated with walling crib 4.
In addition, also be provided with a rubber strip 5 at the joint of walling crib 4 and well lid 6, this can play a part damping in the process of well lid 6 of closing.
Certainly, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in the scope of the utility model claims variation, the modification of the above embodiment.
Claims (2)
1. a spring arm retaining mechanism is used to lock walling crib and the well lid that is seated on the walling crib, it is characterized in that described well lid below also is installed with at least one spring arm, and an end of described spring arm is a projection, and described projection is provided with upper and lower two inclined-planes; Be a projection on the frame of described walling crib, described projection also is provided with upper and lower two inclined-planes; The lower inclined plane of the projection of the ramp of the projection of described spring arm and described walling crib frame is bordered to cooperate when well lid closes and two projections can be detained mutually establish.
2. spring arm retaining mechanism as claimed in claim 1 is characterized in that described walling crib and well lid joint also are provided with a rubber strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02260451 CN2578393Y (en) | 2002-09-29 | 2002-09-29 | Locking mechanism of spring arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02260451 CN2578393Y (en) | 2002-09-29 | 2002-09-29 | Locking mechanism of spring arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2578393Y true CN2578393Y (en) | 2003-10-08 |
Family
ID=33727505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02260451 Ceased CN2578393Y (en) | 2002-09-29 | 2002-09-29 | Locking mechanism of spring arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2578393Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107675726A (en) * | 2016-08-01 | 2018-02-09 | 先源开 | A kind of synchronous adjustable safety inspection well cover |
-
2002
- 2002-09-29 CN CN 02260451 patent/CN2578393Y/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107675726A (en) * | 2016-08-01 | 2018-02-09 | 先源开 | A kind of synchronous adjustable safety inspection well cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20100331 Decision number of declaring invalidation: 14611 Granted publication date: 20031008 |