CN206889382U - Improved structure of pressure reducing balance assembly - Google Patents

Abstract

The utility model provides an improved structure of a pressure reducing balance assembly. A body is provided with the first, second and third holes of a three-way, so that the first hole can be connected to the inside of the crankcase, and the second hole is equipped with a one-way valve. , used to release the pressure through the one-way valve when the predetermined positive pressure is reached inside the crankcase. As for the third hole, an air inlet valve is installed, and the air inlet valve is recessed with an air chamber connected to the third hole. The characteristic is that: the outer end edge of the aforementioned air is installed with a threaded sleeve with an internal screw hole, and the internal screw hole is screwed with a hollow air inlet pipe, and the inner end edge of the air inlet pipe is controlled to be airtightly slidably fitted to the air chamber, and another part in the air chamber is The slide is equipped with a piston, and the piston is operated by a spring to close the inner end of the intake pipe, so that when the intake pipe screws along the internal screw hole, the pre-pressure of the spring acting piston to close the intake pipe can be adjusted to achieve the desired value inside the crankcase. When the negative pressure is constant, it can overcome the pre-pressure and open the intake pipe to compensate for the internal pressure of the crankcase.

Description

Improved structure of decompression balance assembly

technical field

The utility model relates to a decompression balance assembly that can be installed outside the crankcase of an engine, especially the decompression balance assembly has an intake valve that can directly compensate the negative pressure inside the crankcase, and has a simpler structure and can release For a check valve with positive pressure inside the crankcase.

Background technique

Press, the background technology is just as shown in the Taiwan No. 104208002 "Decompression Balance Device" patent, please refer to the specification of the patent, which has at least the following disadvantages:

1. The intake valve 40 cannot be directly set to compensate the negative pressure value inside the crankcase. It must be externally connected to the second throttling member 48, 48a (commonly known as a pressure regulating valve) shown in FIG. 3 or FIG. 6 through the fixing member 43. Can be set, in this regard, will greatly increase the length and volume of the previous patent, so that it is difficult to cope with the limited space of the engine room, causing troubles that are not easy to install.

2. The intake valve 40 is located at the position where the fixing member 43 and the second throttling member 48, 48a are assembled, since there is no airtight structure, there is concern about air leakage.

Three, its one-way valve 30 has the shortcoming of complex structure, high cost, and unpleasant pressure relief.

In view of this, through continuous research and testing by the designer of the utility model, the utility model finally came out which can improve the deficiency of the previous patent disclosed above.

Utility model content

The purpose of the utility model is to provide an improved structure of a decompression balance assembly to solve the above-mentioned technical problems existing in the prior art.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

An improved structure of a decompression balance assembly, characterized by at least including:

A body, which has a first hole, a second hole and a third hole of the tee, and the first hole can communicate with the inside of the crankcase;

A one-way valve, which is installed on the body and communicates with the second hole, is used to release the pressure through the one-way valve when the inside of the crankcase reaches a predetermined positive pressure; and

An intake valve, which has a base assembled on the body, the base is provided with an air chamber connected to the third hole, and a screw sleeve with an inner screw hole is installed on the outer edge of the air gas, and the inner screw hole is screwed There is a hollow air intake pipe with external threads, the inner edge of the air intake pipe can be airtightly slid in the air chamber through screw shifting; the air chamber is slidably equipped with a piston, and the piston is actuated by a spring to seal the inner end of the air intake pipe, The screw movement of the air pipe along the inner screw hole can adjust the pre-pressure of the spring action piston to close the air intake pipe.

The improved structure of the decompression balance assembly, wherein: the intake pipe is also screwed with a nut capable of abutting against a screw sleeve for positioning the intake pipe.

In the improved structure of the decompression balance assembly, an anti-leakage ring is embedded in the outer periphery of the inner edge of the intake pipe, which is used for the airtight sliding fit of the inner edge of the intake pipe to the air chamber.

The improved structure of the decompression balance assembly, wherein: the base is also provided with a plurality of manifolds connected to the third hole at the inner end of the air chamber, and a middle hole is arranged at the center of the inner end of the air chamber, and the piston has a sliding air distribution The plug part of the chamber and the rod part of the middle hole are slidingly fitted, and a number of guide grooves are provided on the outer circumference of the plug part. A spring fits on the outer circumference of the rod part. One end of the spring contacts the inner end of the gas chamber, and the other end acts as a plug , so that the plug has a movement tendency to close the inner end of the intake pipe at any time.

The improved structure of the decompression balance assembly, wherein: the third hole of the body has a third threaded portion, and the base of the intake valve has a seventh threaded portion capable of combining the third threaded portion, and the third threaded portion The position ring where the threaded part and the seventh threaded part abut against each other is provided with a fourth washer, and the base is also connected to an eighth threaded part with a larger aperture on the outer edge of the gas chamber, and the eighth threaded part is installed with an inner The threaded sleeve of the screw hole, and a fifth washer is arranged around the position where the eighth threaded portion abuts against the screwed sleeve.

The improved structure of the decompression balance assembly, wherein: the one-way valve is composed of a first housing, a second housing and a shrapnel, wherein the first housing is penetrated with a first flow channel communicating with the first hole , the second shell is assembled with the first shell, and has a second flow channel that communicates with the first flow channel, and the shrapnel is locked to the first shell by bolts to close the first flow channel and further separate the first flow channel and the second flow channel, the shrapnel can also swing with the bolt as the fulcrum of the lever, so as to conduct the first flow channel and the second flow channel.

In the improved structure of the decompression balance assembly, the first shell ring is provided with a second gasket capable of being abutted by the shrapnel.

The improved structure of the decompression balance assembly, wherein: the shrapnel is made of laminated multi-layer composite materials, and the bottom edge of the shrapnel is provided with a through hole for bolts to pass through, so that the bolts can be locked on the first case.

The improved structure of the decompression balance assembly, wherein: the body has a second thread protruding annularly from the outer end of the second hole, and the first housing is provided with a combined second thread on one end edge of the first flow channel. The fourth threaded part of the part, and a second gasket is provided at the position where the first housing abuts the body, and the other end of the first flow channel is bifurcated with several notches, and a shrapnel is installed at the outer end of each notch, And the outer circumference of the first casing is also provided with a fifth threaded portion under the notch; the second casing is provided with a sixth threaded portion capable of combining the fifth threaded portion on an end edge of the second flow channel, in order to make the second flow channel The channel can communicate with the first flow channel.

The utility model provides an improved structure of a decompression balance assembly, which has two advantages:

1. In the utility model, the intake valve is provided with an air chamber connected to the inside of the crankcase. A screw sleeve is installed on the outer edge of the air intake. The screw sleeve is screwed with the intake pipe, and controls the airtight slide at the inner end of the intake pipe. It is equipped with the air chamber, and the air chamber is equipped with a sliding piston, which is actuated by a spring to close the inner end of the intake pipe, so that when the intake pipe moves along the screw sleeve, the pre-set value of the spring acting piston to close the intake pipe can be adjusted. In this way, the problem of excessive length and volume of the externally connected pressure regulating valve in the previous patent disclosed above can be improved, so that the utility model can be easily installed in the engine room, and the problem of air leakage can be improved.

2. The one-way valve of the present utility model is composed of a first housing, a second housing and a shrapnel, wherein the first housing is provided with a first flow channel communicating with the inside of the crankcase, and the second housing is assembled on the first shell, and has a second flow channel communicating with the first flow channel. As for the shrapnel, it is locked to the first casing by bolts to close the outer end of the first flow channel. When the inside of the crankcase reaches a predetermined positive pressure, the shrapnel can be pushed to guide Through the first and second flow channels, the pressure is relieved, so as to improve the disadvantages of the one-way valve in the above-disclosed patent, such as complicated structure, high cost and unpleasant pressure relief.

Description of drawings

Fig. 1 is an exploded schematic diagram of the utility model.

Fig. 2 is a combined appearance schematic diagram of the utility model.

Fig. 3 is a schematic diagram of pressure relief of the one-way valve of the present invention.

Fig. 4 is a schematic cross-sectional view of the intake valve of the present invention before pressure regulation.

Fig. 5 is a schematic cross-sectional view of the intake valve of the present invention after pressure regulation.

FIG. 6 is a schematic diagram of the compensation pressure of the intake valve in FIG. 4 .

FIG. 7 is a schematic diagram of the compensation pressure of the intake valve in FIG. 5 .

Description of reference signs: 10 body; 11 first hole; 111 first threaded part; 12 second hole; 121 second threaded part; 13 third hole; 131 third threaded part; 14 joint; 21 first gasket; 22 The second gasket; 23 the third gasket; 24 the fourth gasket; 25 the fifth gasket; 30 one-way valve; 31 the first housing; 32 second shell; 321 second flow channel; 322 sixth threaded part; 33 shrapnel; 331 through hole; 34 bolt; 40 intake valve; 41 base; 411 seventh threaded part; 412 air chamber; ; 414 middle hole; 415 eighth thread joint; 42 screw sleeve; 421 inner screw hole; 43 intake pipe; 431 external thread; 432 leak-proof ring; 44 nut; 45 piston; 451 plug; 452 rod; 453 Guide groove; 46 springs; X1, X2 open stroke.

detailed description

Please refer to Fig. 1 to Fig. 7, the utility model at least includes:

A body 10, which has a first hole 11, a second hole 12 and a third hole 13 of a tee; the first hole 11 has a first threaded portion 111 for screwing a joint 14 so as to pass through the joint 14 The first hole 11 is communicated with the inside of the crankcase of the engine, and a first gasket 21 is provided at the appropriate position where the joint 14 abuts the main body 10, so as to maintain the airtightness between the main body 10 and the joint 14, so that there will be no leakage Concerns; as for the outer end of the second hole 12, a second threaded portion 121 protrudes annularly, while the third hole 13 has a third threaded portion 131;

A one-way valve 30, which is installed in the second hole 12, is used to release the pressure through the one-way valve 30 when the inside of the crankcase reaches a predetermined positive pressure; the one-way valve 30 is mainly composed of the first housing 31. The second shell 32 and the shrapnel 33 are composed, wherein the first shell 31 has a first flow passage 311 through it, and a fourth threaded part capable of combining the second threaded part 121 is provided on one end edge of the first flow passage 311 312, in order to enable the first flow channel 311 to communicate with the inside of the crankcase, and the second gasket 22 is arranged around the appropriate position where the first casing 31 abuts the body 10, so as to keep the airtight between the body 10 and the first casing 31 As for the other end of the first channel 311, there are three notches 313 forked, and the outer periphery of the first housing 31 is provided with a fifth threaded part 314 below the notches 313; the aforementioned second housing 32 has a penetrating The second flow channel 321, and a sixth threaded portion 322 capable of combining the fifth threaded portion 314 is provided at one end of the second flow channel 321, so that the second flow channel 321 can communicate with the first flow channel 311; as for the elastic piece 33 It is made of multi-layer composite materials, and the bottom edge of the elastic piece 33 is provided with a through hole 331 for the bolt 34 to pass through, so that the bolt 34 can be locked to the first shell 31 for one by one. Corresponding to the outer end of the notch 313 that closes the first flow passage 311, and then separates the first flow passage 311 and the second flow passage 321, but when the inside of the crankcase reaches a predetermined positive pressure, it can push the shrapnel 33 to swing open with the bolt 34 as the fulcrum of the lever. The notch 313 of the first flow passage 311, and then lead to the first flow passage 311 and the second flow passage 321 to release the pressure inside the crankcase, in order to provide recovery and reuse, especially explained here, in order to make the shrapnel 33 effectively closed A notch 313, which is provided with a second gasket 23 on the outer end of the notch 313, which can be abutted by the elastic piece 33; and

An intake valve 40, which has a base 41 assembled on the body 10, the base 41 has a seventh threaded portion 411 capable of combining the third threaded portion 131, and a fourth washer is arranged around the abutting position 24, and the base 41 is further concavely provided with an air chamber 412 at the outer end, and a plurality of manifolds 413 connected to the third hole 13 are provided on the inner end ring of the air chamber 412, and a center is provided at the inner end center of the air chamber 412. hole 414, and an eighth threaded part 415 with a larger diameter is connected to the outer edge of the air chamber 411, and the eighth threaded part 415 is installed with a threaded sleeve 42 with an inner threaded hole 421, and abuts each other The position ring is provided with the fifth washer 25, and the aforementioned internal screw hole 421 is screwed with a hollow intake pipe 43 with external thread 431, so that the inner edge of the intake pipe 43 can be stretched into the air chamber 412 by screwing, and An anti-leakage ring 432 is embedded on the outer periphery of the inner edge of the inlet pipe 43, so that the inner edge of the inlet pipe 43 is airtightly slidably fitted to the air chamber 412, and then an external screw thread 431 of the inlet pipe 43 is provided with a screw that can be abutted against. The nut 44 at the outer end of the screw sleeve 42 is used for positioning the intake pipe 43 so as not to loosen; and the air chamber 412 is provided with a piston 45, which has a plug portion 451 capable of sliding the air distribution chamber 412, and a sliding The rod part 452 of the middle hole 414 is provided, and a plurality of guide grooves 453 are provided on the outer circumference of the plug part 451, and then a spring 46 is fitted on the outer circumference of the rod part 452, so that one end of the spring 46 abuts against the inner end of the air chamber 412, and the other One end actuates the plug portion 451, as shown in Fig. 4 and Fig. 6, so that the plug portion 451 has the potential to close the inner end of the intake pipe 43 at any time, so that the spring 46 has the pre-pressure that acts on the piston 45 to close the intake pipe 43, and the crankshaft When the inside of the box reaches the set negative pressure, the air intake pipe 43 can be opened to overcome the pre-pressure to compensate the internal pressure of the crankcase.

Please cooperate with Fig. 5 and Fig. 7 28, when we loosen the nut 44, then, rotate the intake pipe 43 to rotate, so that the external thread 431 of the intake pipe 43 can move downward along the internal screw hole 421 to a fixed point, It can adjust the pre-pressure that the spring 46 acts on the piston 45 to close the intake pipe 43, so that the pre-pressure becomes smaller, so as to overcome the pre-pressure and open the intake pipe 43 when the crankcase interior reaches the set negative pressure. The pressure system is smaller than that in Figure 4, so its opening stroke X2 will be larger than the opening stroke X1 shown in Figure 6. Therefore, the utility model can directly rotate the nut 44 and the intake pipe 43 to compensate the crankcase. different pressures inside.

Therefore, these configurations described in the utility model have the following characteristics at least:

1. The utility model can directly rotate the nut 44 and the intake pipe 43 of the intake valve 40 to compensate the different pressures inside the crankcase, so as to improve the length and volume of the external pressure regulating valve in the previous patent disclosure. Big problem, the utility model can be easily installed in the engine room, and can improve the problem of air leakage.

2. The shrapnel 33 of the one-way valve 30 of the present utility model is to use the bolt 34 as a lever fulcrum to swing and open and close the first flow passage 311. The above-mentioned structure cooperation is indeed enough to improve the complicated structure of the one-way valve in the previous patent. , high cost and unsatisfactory pressure relief.

To sum up, the utility model can indeed improve many troubles in the previous patents disclosed above. It is indeed a very outstanding and excellent design, and it has not been seen in publications or publicly used, and it meets the application requirements for a new patent. But the above-mentioned person is only a preferred embodiment of the utility model, and its scope of implementation cannot be limited, that is, all equal changes and modifications made according to the patent scope of the utility model should still belong to the utility model. within the scope of the new model.

Claims (9)

1. A kind of 1. structure-improved for depressurizing balance assembly, it is characterized in that comprising at least：

   One body, it has the first hole, the second hole and the 3rd hole of threeway, and first hole can be communicated to inside crankcase；

   One check valve, it is installed on body and the second hole of connection, can be by this during reaching predetermined malleation inside crankcase Check valve and the release of pressure that carries out；And

   One intake valve, it has the pedestal for being mounted on body, and the pedestal is communicated with the air chamber in the 3rd hole, and in air chamber external end edge Being provided with one has the swivel nut of inner bolt hole, and the inner bolt hole, which is screwed with one, has externally threaded hollow air inlet pipe, air inlet pipe the inner Edge can be moved and airtight slide fit in air chamber by spiral shell；Piston is equipped with air chamber, and with spring start piston closing air inlet pipe The inner, spiral shell of the air inlet pipe along inner bolt hole move the precompression that can adjust spring effect piston closing air inlet pipe.
2. 2. the structure-improved of decompression balance assembly as claimed in claim 1, it is characterised in that：The air inlet pipe also spiral shell is provided with an energy The nut of swivel nut is abutted, to position the air inlet pipe.
3. 3. the structure-improved of decompression balance assembly as claimed in claim 1 or 2, it is characterised in that：In the air inlet pipe outside ora terminalis All build-ins have seal ring, with so that the airtight slide fit of ora terminalis in air inlet pipe is in air chamber.
4. 4. the structure-improved of decompression balance assembly as claimed in claim 3, it is characterised in that：The pedestal is also set in air chamber the inner There are the 3rd Kong Qi roads of some connections, a mesopore is provided with air chamber the inner center, and piston has the piston part of energy slide fit air chamber, with And the bar portion of slide fit mesopore, and some approaching channels have been provided in piston part periphery, a spring housing supports together in bar portion periphery, the spring one end Air chamber the inner, other end start piston part are connect, makes the piston part that there is the inner movement tendency of closing air inlet pipe at any time.
5. 5. the structure-improved of decompression balance assembly as claimed in claim 3, it is characterised in that：The hole of body the 3rd has the 3rd Threaded portion, and the pedestal of intake valve has can combine the 7th threaded portion of the 3rd threaded portion, and the 3rd threaded portion and this The position ring that seven threaded portions mutually abut is provided with the 4th packing ring, and pedestal is also connected with larger the 8th in an aperture in air chamber external end edge Screw part, the 8th screw part, which is provided with one, has the swivel nut of inner bolt hole, and is mutually abutted with the swivel nut in the 8th screw part Position ring be provided with the 5th packing ring.
6. 6. the structure-improved of decompression balance assembly as claimed in claim 1, it is characterised in that：The check valve by the first housing, Second housing and shell fragment are formed, wherein, the first housing provides the first flow in the first hole of connection, and second housing is connected to First shell, and with the second flow channel of connection first flow, the shell fragment is locked on the first housing by bolt, to close the One runner, and then separation first flow and second flow channel, the shell fragment can also be swung by balance pivot of bolt, so as to lead Logical first flow and second flow channel.
7. 7. the structure-improved of decompression balance assembly as claimed in claim 6, it is characterised in that：First housing is equipped with and can supplied The second packing ring that shell fragment abuts.
8. 8. the structure-improved of decompression balance assembly as claimed in claims 6 or 7, it is characterised in that：The shell fragment is answered with multilayer Condensation material, which splices, to be formed, and the shell fragment bottom edge is provided with the through hole that tug is worn for bolt, to be locked on the first housing by the bolt.
9. 9. the structure-improved of decompression balance assembly as claimed in claims 6 or 7, it is characterised in that：The body is in outside the second hole End ring shape protrudes the second threaded portion, and the first housing is then provided with the ora terminalis of first flow one can combine the 4th of the second threaded portion Threaded portion, and the position ring for abutting in the first housing body is provided with second packing ring, then bifurcated has for the first flow other end Some breach, and shell fragment is installed in each breach outer end, and the first shell external week is also equipped with the 5th spiral shell below breach Line portion；Second housing is provided with the 6th threaded portion that can combine the 5th threaded portion in the ora terminalis of second flow channel one, to make second flow channel First flow can be connected.