CN201931426U

CN201931426U - Device for mounting O-shaped rings

Info

Publication number: CN201931426U
Application number: CN201020685319XU
Authority: CN
Inventors: 叶庆敏
Original assignee: NINGBO JOYSON AUTOMOTIVE COMPONENTS CO Ltd
Current assignee: Ningbo Junsheng Qunying Automobile System Co Ltd
Priority date: 2010-12-29
Filing date: 2010-12-29
Publication date: 2011-08-17
Anticipated expiration: 2020-12-29

Abstract

The utility model discloses a device for mounting O-shaped rings, which comprises a cylinder with an axial middle through hole. A sunk plate is arranged at the front end of the through hole, a push bar is movably inserted into the through hole, an expanded portion matched with the sunk plate is arranged at the front end of the push bar, and the distance from the sunk plate to the front end face of the cylinder is slightly larger than sum of the thickness of the expanded portion and the thickness of an O-shaped ring to be mounted. When the device is used as compared with the prior art, the O-shaped ring does not contact with the inner wall of a tube to be mounted during the whole process of the insertion of the cylinder into the tube, and thereby no scratch of the O-shaped ring is guaranteed, no deformation of the O-shaped ring is achieved and sealing performance of assembled products is more stable. Further, when a telescopic tube is deformed slightly and local friction is increased, the O-shaped ring cannot be affected and proper mounting of the O-shaped ring can be guaranteed since the O-shaped ring does not contact with the inner wall of the tube to be mounted during mounting. Additionally, the device is used for mounting in a modular mode, thereby having the advantages of convenience in tooling maintenance.

Description

A kind of device that is used to install O type circle

Technical field

The utility model relates to the pipe fitting machining technology, relates in particular to a kind of device that is used to install O type circle.

Background technology

At present, the headlight for vehicles nozzle just extensively is used to high-grade headlight for vehicles jet cleaning system.Two sealing O type circles are arranged in the headlight for vehicles nozzle telescoping tube, be used for the headlight shower nozzle at telescoping tube and two ends and the sealing of piston component junction, the assembling of O type circle is not in place can to produce drainage, causes whole headlight nozzle defective.Because headlight for vehicles nozzle telescoping tube is very long, the position of O type circle assembling is very dark, and two ends all need to install O type circle.

Mainly contain two kinds of assembly methods at present, first kind is with cylindric instrument with the level, and O shape snare is entered the step position of small column, inserts O type circle and assembles.This assembly method is because all there are extrusion friction in telescoping tube and cylindric instrument and O type circle; cause when instrument is pulled out; O type circle is taken out of through regular meeting thereupon; perhaps O type circle twists in telescoping tube and does sealing well; need the manual feel rotation assembling that utilizes; and detect owing to lack the anti-neglected loading of frock, the defective work that O type circle just enters next process occurs not adorning through regular meeting.

Another kind is with the fixing O type circle of telescopic slide block with the level, when O type pipe is seated, because Slipper touches the product face, spring is compressed, in the slide block indentation instrument, make O type circle slip into small stair, make O type circle only be subjected to telescoping tube inwall frictional force, do not taken out of or twist by instrument, product can be seated.Its shortcoming is: when telescoping tube inwall step is very little, the radius of step interstitial hole is during greater than the slide block radius, and just retaining is less than slide block for the product face, and elastic mechanism is just lack scope for their abilities.When in the frock that is applied to detect neglected loading, when a small amount of distortion appears in telescoping tube, when instrument inserts from the telescoping tube two ends, because product two stomidium disalignments, O type circle can appear and telescoping tube inwall local friction power is bigger, even it is slotting not in place instrument to occur, the situation that the assembling of O shape circle is not in place and twist occurs, and can occur the low problem of production efficiency again if two ends are separately adorned.

Summary of the invention

The utility model is at deficiency of the prior art, provide a kind of simple and reasonable, the device of O type circle is installed in easy to use being used to, and uses the utility model to carry out in the installation process of O type circle product not being had scratch, O type circle is not yielding, and the product hermeticity that assembling is come out can be more stable.

In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:

A kind of device that is used to install O type circle, comprise a cylinder, have axially extending bore in the middle of the cylinder, the front end of this through hole has heavy stand, activity is plugged with a push rod in the through hole, the front end of push rod has the expansion section of matching with heavy stand, and heavy stand to the distance of cylinder front end end face is a bit larger tham the thickness sum of the thickness and the O type circle to be installed of expansion section.When using the utility model, O type circle can not come in contact with the inwall of body to be installed in the whole process of cylinder in inserting body to be installed, therefore, O type circle is not had scratch, and O type circle can not be out of shape, and the product hermeticity that assembling is come out can be more stable; And, because O type circle can not come in contact with the inwall of body to be installed in the assembling process,, local friction's power occurs and increase when a small amount of distortion appears in telescoping tube, can not have influence on O type circle yet, can guarantee that O type circle is seated; In addition, assembling mode of the present utility model all is to carry out with modularity, therefore also has frock advantage easy to maintenance.

In order to obtain better technique effect, further technical measures also comprise:

Also be shaped on the confined planes that matches with the end face of the body of O type circle to be installed on the above-mentioned cylinder.When cylinder moves to assigned address, confined planes promptly with the end face of the body of O type circle to be installed apical grafting mutually, stop cylinder to continue to move, guarantee that O type circle is seated.

Further improve, the rear end of above-mentioned push rod is equipped with the stroke that is used for push rod and carries out spacing block.

Further improve, above-mentioned block is equipped with snap switch on the end face of cylinder.This programme makes and the utlity model has the function that neglected loading detects, just utilize block O type circle have or two kinds of different conditions not having under range difference can detect neglected loading, if be unkitted O type circle, this face is with regard to touch switch, the frock warning; If adorned the stroke shape that stroke that O type circle that instrument moves has just reduced by an O shape circle thickness, this face does not touch snap switch, product is qualified.

Compared with prior art, the beneficial effects of the utility model are:

1) whole assembling process does not have scratch to O type circle, and O type circle can not be out of shape, and the product hermeticity that assembling is come out can be more stable;

2) owing to O type circle in the assembling process can not come in contact with the inwall of body to be installed, when a small amount of distortion appears in telescoping tube, local friction's power occurs and increase, can not have influence on O type circle yet, can guarantee that O type circle is seated;

3) assembling mode of the present utility model all is to carry out with modularity, therefore also has frock advantage easy to maintenance;

4) the utility model is applicable to various heteromorphism rubber rings, for product design require relatively low;

5) in the application facet of automation assembling, use easier.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the generalized section of Fig. 1;

Fig. 3 is the utility model work schematic diagram;

Fig. 4 is the generalized section of Fig. 3.

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:

Present embodiment is applied to headlight for vehicles nozzle telescoping tube O type circle is installed.A kind of device that is used to install O type circle, comprise a cylinder 1, have axially extending bore 2 in the middle of the cylinder 1, the front end of this through hole 2 has heavy stand 3, activity is plugged with a push rod 4 in the through hole 2, and the front end of push rod 4 has the expansion section 4a that matches with heavy stand 3, and the rear end is equipped with the stroke that is used for push rod 4 and carries out spacing block 5, block 5 is equipped with snap switch 6 on the end face of cylinder 1, heavy stand 3 to the distance of cylinder 1 front end end face is a bit larger tham the thickness sum of thickness and the O type circle 8 to be installed of expansion section 4a.

Also be shaped on the confined planes 1a that matches with the end face of headlight nozzle telescoping tube 7 on the above-mentioned cylinder 1.

Front end described in the utility model is meant that push rod 4 inserts the direction at an end place of cylinder 1.

Operation principle of the present utility model is as follows: at first O type circle is pressed in the counterbore, then cylinder is inserted into the inner chamber of the body of O type circle to be installed, when also having the thickness of an O type circle between cylinder end face and the telescoping tube inwall step, promote push rod and make O type circle enter into rigging position then, extract cylinder and push rod at last out.Whole process is simple and convenient, and is swift to operate.

Claims

1. device that is used to install O type circle, it is characterized in that: comprise a cylinder (1), have axially extending bore (2) in the middle of the described cylinder (1), the front end of this through hole (2) has heavy stand (3), the interior activity of described through hole (2) is plugged with a push rod (4), the front end of described push rod (4) has the expansion section (4a) of matching with described heavy stand (3), the thickness sum that described heavy stand (3) is a bit larger tham the thickness and the O type circle to be installed of described expansion section (4a) to the distance of described cylinder (1) front end end face.

2. a kind of device that is used to install O type circle according to claim 1 is characterized in that: also be shaped on the confined planes (1a) that matches with the end face of the body of O type circle to be installed on the described cylinder (1).

3. a kind of device that is used to install O type circle according to claim 2 is characterized in that: the rear end of described push rod (4) is equipped with the stroke that is used for described push rod (4) and carries out spacing block (5).

4. according to the described a kind of device that is used to install O type circle of arbitrary claim in the claim 1 to 3, it is characterized in that: described block (5) is equipped with snap switch (6) on the end face of described cylinder (1).