CN212340581U - Internal expanding type plugging tool - Google Patents
Internal expanding type plugging tool Download PDFInfo
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- CN212340581U CN212340581U CN202022749081.9U CN202022749081U CN212340581U CN 212340581 U CN212340581 U CN 212340581U CN 202022749081 U CN202022749081 U CN 202022749081U CN 212340581 U CN212340581 U CN 212340581U
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Abstract
The utility model provides an internal expanding type plugging tool, which is used for plugging an oil filling port of an automobile oil tank and testing air tightness in an inflatable manner, wherein a plugging rubber ring is sleeved on a rubber ring supporting part of a rubber ring pressing rod, the front end face of the plugging rubber ring is attached to an annular retaining shoulder part which supports the rubber ring pressing rod, and the retaining shoulder part of the rubber ring at the tail part is attached to the hole wall end face of a large-diameter hole section of a cylinder cover; the rubber ring supporting part can slide in the large-diameter hole section; the piston connecting part penetrates through the small-diameter hole section and is connected with the small-diameter hole section in a sliding and sealing mode, and the head of the piston connecting part is embedded into a piston through hole of the piston and is fixedly connected with the piston through hole in a sealing mode; the axle center through hole of the rubber ring pressure lever, the piston through hole of the piston and the small diameter section of the cylinder body are communicated with each other with the same axle center. The utility model is simple and convenient to operate, and can be inserted into the oil tank filler by the hand of an operator, and then the filler can be plugged into the automobile oil tank filler by shifting the switching valve; the on-off is controlled by adopting a mechanical valve, so that the hidden danger that a button leaks electricity to generate sparks and lead a fuel tank is avoided; the interference of the tool and the automobile side metal plate of part of automobile types can be effectively avoided.
Description
Technical Field
The utility model belongs to the technical field of the test is aerifyd in the shutoff of car fuel supply system, a interior expanding shutoff frock that is used for shutoff car oil tank oil filler hole and inflatable test gas tightness is related to.
Background
At present, there are various technologies for detecting the tightness of a sealed container, and the tightness detection technology is an intuitive and commonly used detection technology. The method has the advantages of convenient automation, short detection time, stability, reliability, no pollution and the like, and the detected workpiece can keep a dry state. The air tightness detector is required for air tightness detection, is specially applied to equipment for detecting the tightness of cavity mechanical products, and can be used in production of automobile engines, gearboxes, axles, water tanks, oil tanks and the like with sealing requirements on accommodating cavities. The tightness detection of the water tank and the oil tank is important for the safety of the automobile, and the air tightness detection can be adopted for testing the automobile. The problem that how to seal the fuel tank opening is necessary to be solved.
The Chinese patent publication No. CN211651989U discloses a hand-held tool for sealing the annular surface and testing the air tightness by inflation, which can seal and test the oil filling port of the automobile oil tank, but because the oil filling port of the automobile oil tank is arranged on the side surface of the automobile, the tool structure of the patent may interfere with the side body metal plates of some automobile types when sealing the oil filling port. In order to solve the problem of interference with a metal plate of an automobile body, a plugging tool with a novel structure is urgently needed to be designed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an interior expanding shutoff frock that is used for shutoff car oil tank oil filler hole and inflatable detection, it uses with airtight leak detector cooperation, and applicable carries out the detection achievement of oil tank seal on the automotive production line, reaches to carry out the purpose of shutoff and test its seal to car oil tank oil filler hole, the interference problem of frock and the sheet metal component of car itself when having solved part motorcycle type car oil tank oil filler hole shutoff test basically.
The utility model adopts the technical proposal that:
interior expanding shutoff frock for shutoff car oil tank oil filler hole and inflatable test gas tightness, it includes:
the cylinder body is provided with a stepped blind hole consisting of a large-diameter section and a small-diameter section which are coaxial; the small diameter section is connected with an inflation gas source;
the piston disc of the piston is arranged in the large-diameter section of the stepped blind hole in a sealing and sliding manner; a guide column is convexly arranged at the center of the piston disc, extends into the small-diameter section and is in sealing sliding connection with the small-diameter section; a piston through hole which penetrates through the piston disc and the guide post is also formed in the axis of the piston;
the rubber ring pressing rod sequentially comprises an annular retaining shoulder part, a rubber ring supporting part and a piston connecting part along the axial lead, and an axial center through hole is formed in the axial center of the rubber ring pressing rod;
the tail part of the plugging rubber ring is provided with a rubber ring shoulder;
the cylinder cover is fixedly connected with the cylinder body in a sealing way, and is provided with a stepped through hole consisting of a large-diameter hole section and a small-diameter hole section; the cylinder cover is also provided with a driving gas through hole, one end orifice of the driving gas through hole is arranged on the periphery of the orifice wall of the large-diameter orifice section and is connected with a driving gas source, and the other end of the driving gas through hole is arranged on the end surface of the cylinder cover, which is correspondingly abutted and limited with the piston disc;
the plugging rubber ring is sleeved on the rubber ring supporting part of the rubber ring pressing rod, the front end face of the plugging rubber ring is attached to the annular retaining shoulder part of the rubber ring pressing rod, and the rubber ring retaining shoulder at the tail part is attached to the hole wall end face of the large-diameter hole section of the cylinder cover; the rubber ring supporting part can slide in the large-diameter hole section; the piston connecting part penetrates through the small-diameter hole section and is connected with the small-diameter hole section in a sliding and sealing mode, and the head of the piston connecting part is embedded into a piston through hole of the piston and is fixedly connected with the piston through hole in a sealing mode; the axle center through hole of the rubber ring pressure lever, the piston through hole of the piston and the small diameter section of the cylinder body are communicated with each other with the same axle center.
An exhaust through hole communicated with the outside atmosphere outside the cylinder body is communicated with the bottom of the hole of the large-diameter section.
The cylinder body is provided with a mounting through hole communicated with the small-diameter section on one side part of the small-diameter section, the mounting through hole is connected with an inflation connector, and the inflation connector is connected with an inflation air source through an inflation pipeline and an electromagnetic valve.
The electromagnetic valve is a two-position three-way electromagnetic valve.
The rubber ring pressure lever is a revolving body.
The pore wall of the large-diameter pore section of the cylinder cover is provided with an exhaust hole communicated with the outside atmosphere.
The cylinder cover and the piston disc are correspondingly attached to the end face of the limit and are also provided with an annular groove communicated with the opening of the driving gas through hole.
The driving gas through hole is arranged on the orifice on the periphery of the hole wall of the large-diameter hole section and is connected with a rotary joint through threads, the rotary joint is connected with a micro joint through threads, the micro joint is connected with a gas outlet of a two-inlet and one-outlet switching valve through a rear-section driving pipeline, one inlet of the switching valve is communicated with the external atmosphere, and the other inlet of the switching valve is connected with a driving gas source through a front-section driving pipeline.
The switching valve adopts a mechanical valve.
The handle mainly comprises an upper handle cover and a lower handle cover, and the whole length direction of the handle is perpendicular to the hole center line of the stepped blind hole of the cylinder body.
The utility model is simple and convenient to operate, and can be inserted into the oil tank filler by the hand of an operator, and then the filler can be plugged into the automobile oil tank filler by shifting the switching valve; the device can be suitable for the detection environment with part of residual gasoline in the oil tank, and the mechanical valve is used for controlling on-off to replace a button to control the electromagnetic valve for controlling the plugging and sealing, so that the hidden danger that the button leaks electricity to generate sparks and lead the fuel tank is avoided; the interference of the tool and the automobile side metal plate of part of automobile types can be effectively avoided.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
FIG. 1 is a schematic diagram of a state that original patent tooling interferes with the side face of an automobile body during plugging;
fig. 2 is a schematic view of the state of the tool and the side surface of the automobile body when the tool is plugged;
fig. 3 is a schematic perspective view of the tool of the present invention;
FIG. 4 is a schematic side view of the tool of the present invention;
FIG. 5 is a structural section view of the tool of the present invention;
FIG. 6 is a schematic view of the tool in a normal state;
FIG. 7 is a schematic view of the tool in a plugging state;
FIG. 8 is a perspective view of the rubber ring pressing rod;
FIG. 9 is a schematic perspective view of a sealing rubber ring;
FIG. 10 is a perspective view of the cylinder head;
FIG. 11 is a schematic perspective view of the piston;
fig. 12 is a perspective view of the cylinder.
The main reference numbers in the figures: 1-a rubber ring compression bar, 2-a sealing rubber ring, 3-a cylinder cover, 4-screws, 5-O-shaped rings, 6-O-shaped rings, 7-pistons, 8-O-shaped rings, 9-O-shaped rings, 10-O-shaped rings, 11-a cylinder body, 12-a handle lower cover, 13-a miniature joint, 14-a switching valve and 15-a miniature joint, 16-handle upper cover, 17-connecting block, 18-sheathed tube joint, 19-inflation joint, 20-micro joint, 21-adapter, 22-oil tank oil filling port, 23-air chamber, 24-rear section driving pipeline, 25-inflation pipeline, 26-front section driving pipeline, 27-inflation air source, 28-electromagnetic valve, 29-driving air source and 30-automobile body side surface.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 4 and 5, the core components of the internal expanding type plugging tool of the present invention include a rubber ring pressure bar 1, a plugging rubber ring 2, a cylinder cover 3, a cylinder body 11, a piston 7, a handle, and a switching valve 14;
the cylinder cover 3 and the cylinder body 11 are fixedly connected through a screw 4, and the two are sealed through an O-shaped ring 5; the cylinder head 3 is opened to a connection flange portion 303 shown in fig. 10 through a hole for passing a screw 4 fixed to the cylinder block 11.
Referring to fig. 12, the cylinder 11 is provided with a stepped blind hole formed by a large diameter section 111 and a small diameter section 112 which are coaxial, and an exhaust through hole 1111 communicated with the external atmosphere outside the cylinder is penetrated through the bottom of the large diameter section 111;
referring to fig. 11, the piston disc 71 of the piston 7 is slidably disposed in the large diameter section 111 of the stepped blind hole, and a receiving groove 711 is formed on a periphery of the piston disc 71 for receiving the O-ring 6 to ensure sealing between the piston disc 71 and the large diameter section 111; the piston disc 71 is also convexly provided with a guide post 72 towards the center of the disc surface of the small-diameter section 112, the guide post 72 extends into the small-diameter section 112, the guide post 72 is connected with the small-diameter section 112 in a sealing and sliding manner through an O-shaped ring 9, and the exhaust through hole 1111 prevents a cavity between the piston disc and the hole bottom of the large-diameter section from forming pressure difference with the outside atmosphere to block the movement of the piston; a piston through hole 70 which penetrates through the piston disc 71 and the guide post 72 is also formed in the axis of the piston 7, and the piston through hole 70 is communicated with the small diameter section; the cylinder 11 is provided with a mounting through hole 113 communicating with the small diameter section at one side of the small diameter section 112, the mounting through hole 113 is in threaded connection with an inflation connector 19, the inflation connector 19 is connected with an inflation air source 27 through an inflation pipeline 25 and an electromagnetic valve 28, and the electromagnetic valve 28 in this embodiment is a two-position three-way electromagnetic valve.
As shown in fig. 8, the rubber ring pressing rod 1 is a rotary body, and includes an annular shoulder portion 101, a rubber ring supporting portion 102 and a piston connecting portion 103 along an axial line, and an axial center through hole 104 is further formed at an axial center of the rubber ring pressing rod 1;
as shown in fig. 9, the plugging rubber ring 2 is provided with a rubber ring shoulder 201 at the tail thereof;
as shown in fig. 10, a stepped through hole composed of a large-diameter hole section 301 and a small-diameter hole section 302 is formed in the center of the cylinder head 3, the diameter of the large-diameter hole section 301 is matched with the rubber ring support portion 102 of the rubber ring compression bar 1, and the diameter of the small-diameter hole section 302 is matched with the piston connecting portion 103; the hole wall of the large-diameter hole section 301 is provided with an exhaust hole 3011 communicated with the outside atmosphere, the cylinder cover 3 is also provided with a driving gas through hole 304, an orifice at one end of the driving gas through hole 304 is arranged on the periphery of the hole wall of the large-diameter hole section 301 and is connected with a rotary joint 21 through a thread, the rotary joint 21 is connected with a micro joint 20 through a thread, the micro joint 20 is connected with a gas outlet of a switching valve 14 through a rear-section driving pipeline, the switching valve 14 adopts a mechanical valve with two inlets and one outlet, one inlet is communicated with the outside atmosphere, and the other inlet is connected with a driving gas source through a front-section driving; the other end of the driving gas through hole 304 is arranged on the end surface of the cylinder cover 3 which is correspondingly abutted and limited with the piston disc; preferably, in order to improve the air intake efficiency when driving the piston, as shown in fig. 7, an annular groove 305 communicating with the opening of the driving air through hole 304 is further formed on the end surface of the cylinder head 3, which is opposite to the piston disc and abuts against the limit.
The plugging rubber ring 2 is sleeved on the rubber ring supporting part 102 of the rubber ring pressing rod 1, the front end face of the plugging rubber ring 2 is attached to the annular blocking shoulder part 101 of the rubber ring pressing rod 1, and the rubber ring blocking shoulder 201 at the tail part is attached to the hole wall end face of the large-diameter hole section 301 of the cylinder cover 3; the rubber ring supporting part 102 can slide in the large-diameter hole section 301; the piston connecting part 103 penetrates through the small-diameter hole section 302 and is in sliding sealing connection with the small-diameter hole section through the O-shaped ring 8, the head of the piston connecting part 103 is embedded into the piston through hole 70 of the piston 7 and is fixedly connected with the piston through hole through threads, and the piston connecting part 103 and the piston through hole are in sealing connection through the O-shaped ring 10; therefore, the axle center through hole 104 of the rubber ring pressure bar 1, the piston through hole 70 of the piston 7 and the small diameter section 112 of the cylinder 11 form coaxial communication and jointly form a component of the inflation channel.
The handle mainly comprises handle upper cover 16 and handle lower cover 12, and diverter valve 14 is installed on the handle upper cover, and the whole length direction of handle is mutually perpendicular with the hole central line of cylinder body ladder blind hole to can avoid the interference of frock itself and the car side panel beating of part motorcycle type.
The tail end of the handle is fixedly connected with a sheath pipe joint 18 through a connecting block 17, an inflation pipeline 25 and a front-section driving pipeline 26 penetrate through the sheath pipe joint 18 to enter the handle, the inflation joint 19 is arranged in the handle for protection, and the lower cover 12 of the handle is also provided with a through hole for penetrating a rear-section driving pipeline 24; of course, the overall shape of the handle may be designed to enclose and protect the rear drive line 24, the micro connector 20, and the adapter 21.
The action principle and the process are as follows: the principle of the tool is that the plugging rubber ring is extruded to deform so as to generate a plugging effect. The tool is communicated with and cuts off the driving air source 29 by the switching valve 14, so that the aim of controlling the plugging state of the oil filling port 22 of the oil tank is fulfilled. The inflation gas source 27 is connected with the inlet end of a two-position three-way electromagnetic valve 28, the outlet end of the electromagnetic valve 28 is connected with the inflation connector 19, and the electromagnetic valve 28 controls the on-off of the inflation gas source.
In a normal state, as shown in fig. 6, when the switching valve 14 is in the reset position, the connection with the driving air source 29 is blocked by the switching valve 14, the switching valve 14 is communicated with the outside atmosphere, and the blocking rubber ring 2 is in the extended state and cannot block the oil tank filling opening 22.
As shown in figure 7 under the plugging state, a button of the switching valve 14 is shifted to a starting position, a driving air source 29 enters the air cavity 23 between the piston 7 and the cylinder cover 3 through the front section driving pipeline 26, the micro joint 15, the switching valve 14, the micro joint 13, the rear section driving pipeline 24, the micro joint 20 and the adapter 21, the piston 7 is pushed to move backwards due to the sealing action of the O-shaped rings 6 and 8, the piston 7 is fixedly connected with the rubber ring pressure rod 1, the rubber ring pressure rod 1 can be pulled to move backwards together, so that the plugging rubber ring 2 is extruded to deform, and the inner wall of the tested sample is extruded and attached to achieve the plugging effect. After plugging is completed, the electromagnetic valve 28 can be started, and the inflation gas source 27 can inflate the interior of the automobile oil tank through the inflation pipeline 25, the inflation connector 19, the cylinder body 11, the piston 7, the rubber ring pressure bar 1 and the oil tank oil filling port 22 to detect the airtightness of the automobile oil tank. After the detection is finished, the switching valve 14 is shifted to the reset position, the gas in the gas cavity 23 is discharged through the switching valve 14, and the plugging rubber ring 2 restores the original shape through the self deformation restoring force.
This frock is easy and simple to handle, inserts the oil tank oil filler hole with it by the handheld operator, then stirs the diverter valve and can realize the shutoff to car oil tank oil filler hole. The specific plugging principle of the tool is that the oil tank filler opening 22 is sealed and plugged by adopting the compression deformation expansion of the plugging rubber ring 2, and the damage to the surface of the oil tank filler opening 22 such as collision, scratch and the like is avoided because the plugging rubber ring 2 is made of rubber. After the oil tank filling port 22 is sealed, the inside of the oil tank can be inflated through the inflation connector 19, and the internal pressure change of a detected object can be detected through the air tightness leak detector to judge whether the tightness is good or not.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Interior expanding shutoff frock for shutoff car oil tank oil filler hole and inflatable test gas tightness, its characterized in that includes:
the cylinder body (11) is provided with a stepped blind hole which is composed of a large-diameter section (111) and a small-diameter section (112) which are coaxial; the small-diameter section (112) is connected with an inflation gas source (27);
the piston disc (71) of the piston is hermetically and slidably arranged in the large-diameter section (111) of the stepped blind hole; a guide post (72) is also convexly arranged at the center of the piston disc, extends into the small-diameter section (112) and is in sealing sliding connection with the small-diameter section; a piston through hole (70) which penetrates through the piston disc and the guide post is also formed in the axis of the piston (7);
the rubber ring pressing rod (1) sequentially comprises an annular retaining shoulder part (101), a rubber ring supporting part (102) and a piston connecting part (103) along the axial lead, and an axial center through hole (104) is formed in the axial center of the rubber ring pressing rod (1);
the tail part of the plugging rubber ring (2) is provided with a rubber ring shoulder (201);
the cylinder cover (3) is fixedly connected with the cylinder body in a sealing way, and is provided with a step-shaped through hole consisting of a large-diameter hole section (301) and a small-diameter hole section (302); the cylinder cover (3) is also provided with a driving gas through hole (304), one end orifice of the driving gas through hole (304) is arranged on the periphery of the hole wall of the large-diameter hole section (301) and is connected with a driving gas source, and the other end of the driving gas through hole is arranged on the end surface of the cylinder cover (3) which is correspondingly abutted to and limited by the piston disc;
the plugging rubber ring (2) is sleeved on a rubber ring supporting part (102) of the rubber ring pressing rod (1), the front end face of the plugging rubber ring is attached to an annular retaining shoulder part (101) of the rubber ring pressing rod, and a rubber ring retaining shoulder (201) at the tail part is attached to the hole wall end face of a large-diameter hole section (301) of the cylinder cover (3); the rubber ring supporting part (102) can slide in the large-diameter hole section (301); the piston connecting part (103) penetrates through the small-diameter hole section (302) and is connected with the small-diameter hole section in a sliding and sealing mode, and the head of the piston connecting part (103) is embedded into a piston through hole (70) of the piston (7) and is fixedly connected with the piston through hole in a sealing mode; the axle center through hole (104) of the rubber ring pressure lever (1), the piston through hole (70) of the piston (7) and the small-diameter section (112) of the cylinder body (11) are communicated with each other through the axle center.
2. The internal expanding type plugging tool according to claim 1, wherein an exhaust through hole (1111) communicated with the external atmosphere outside the cylinder body penetrates through the hole bottom of the large-diameter section (111).
3. The internal expanding type plugging tool according to claim 1, wherein a mounting through hole (113) communicated with the small diameter section is formed in one side portion of the small diameter section (112) of the cylinder body (11), the mounting through hole (113) is connected with an inflation connector (19), and the inflation connector (19) is connected with an inflation air source (27) through an inflation pipeline (25) and an electromagnetic valve (28).
4. The internal expanding plugging tool according to claim 3, wherein the solenoid valve (28) is a two-position three-way solenoid valve.
5. The internal expanding type plugging tool according to claim 1, wherein the rubber ring pressing rod (1) is a rotary body.
6. The internal expanding type plugging tool according to claim 1, wherein a vent hole (3011) communicated with the outside atmosphere is formed in the hole wall of the large-diameter hole section (301) of the cylinder cover.
7. The internal expanding type plugging tool according to claim 1, wherein an annular groove (305) communicated with an opening of the driving gas through hole (304) is further formed in the end face of the cylinder cover (3) corresponding to the abutting limit of the piston disc.
8. The internal expansion type plugging tool according to claim 1, wherein a driving gas through hole (304) is formed in a hole opening on the periphery of the hole wall of the large-diameter hole section (301) and is connected with a rotary joint (21) through threads, the rotary joint is connected with a micro joint (20) through threads, the micro joint (20) is connected with a gas outlet of a two-in one-out switching valve (14) through a rear section driving pipeline, one inlet of the switching valve (14) is communicated with the outside atmosphere, and the other inlet of the switching valve is connected with a driving gas source through a front section driving pipeline (26).
9. The internal expanding plugging tool of claim 8, wherein the switching valve is a mechanical valve.
10. The internal expanding type plugging tool according to claim 1, further comprising a handle, wherein the handle comprises an upper handle cover and a lower handle cover, and the overall length direction of the handle is perpendicular to the hole center line of the stepped blind hole of the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022749081.9U CN212340581U (en) | 2020-11-25 | 2020-11-25 | Internal expanding type plugging tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022749081.9U CN212340581U (en) | 2020-11-25 | 2020-11-25 | Internal expanding type plugging tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212340581U true CN212340581U (en) | 2021-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022749081.9U Active CN212340581U (en) | 2020-11-25 | 2020-11-25 | Internal expanding type plugging tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212340581U (en) |
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2020
- 2020-11-25 CN CN202022749081.9U patent/CN212340581U/en active Active
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