JP4503447B2 - Compressor electromagnetic control valve mounting structure - Google Patents

Description

The present invention relates to an electromagnetic control valve mounting portion structure of a compressor.

Mounting of the electromagnetic control valve of the compressor that prevents the electromagnetic control valve from falling off the housing by using a snap ring that engages the electromagnetic control valve and the housing by inserting the electromagnetic control valve into the recess formed in the housing of the compressor The partial structure is disclosed in Patent Document 1.
In the electromagnetic control valve mounting portion structure of the compressor of Patent Document 1, a circumferential groove is formed in the peripheral wall near the opening end of the recess, and a snap ring is engaged with one end of the electromagnetic control valve and the circumferential groove. The electromagnetic control valve is attached to the housing and the electromagnetic control valve is prevented from falling off the housing.
JP2000-249049

The opening degree of the electromagnetic control valve is controlled by an external signal. Since the external signal is generally a pulse signal, contact and separation between the valve body and the valve seat are repeated at a high frequency, and the electromagnetic control valve vibrates. The vibration is transmitted to the compressor housing via the snap ring, and is transmitted as noise from the housing to the external environment.
The present invention has been made in view of the above problems, and inserts an electromagnetic control valve into a recess formed in a compressor housing, and uses a snap ring that engages the electromagnetic control valve and the housing. An object of the present invention is to provide an electromagnetic control valve mounting portion structure for a compressor that prevents falling off from the compressor, and to prevent the vibration of the electromagnetic control valve from being transmitted to the housing. And

In order to solve the above problems, in the present invention, an electromagnetic control valve is inserted into a recess formed in a compressor housing, and a snap ring that engages the electromagnetic control valve and the housing is used to remove the electromagnetic control valve from the housing. an electromagnetic control valve mounting portion structure of preventing the compressor from dropping off of, and Kakarigogakarigo the electromagnetic control valve snap ring via a vibration absorbing acoustic insulation, vibration absorbing soundproofing material snap ring and the housing recess peripheral wall and an electromagnetic control An annular lump-shaped cross section that contacts the outer edge of one end of the valve, and an annular plate that extends radially inward from the circular lump-shaped cross section and contacts one end of the electromagnetic control valve. Provided is an electromagnetic control valve mounting portion structure for a compressor, wherein the inner peripheral edge portion and the annular plate portion of the portion are exposed to the external environment .
In the electromagnetic control valve mounting portion structure of the compressor according to the present invention, the electromagnetic control valve is engaged with the snap ring via the vibration-absorbing and soundproofing material, so that the vibration of the electromagnetic control valve is suppressed from being transmitted to the housing. As a result, the vibration of the electromagnetic control valve is suppressed from being transmitted as noise to the external environment.
Since the vibration-absorbing and sound-insulating material having the massive cross-sectional shape has a sufficient crushing margin, the vibration-absorbing effect is large.

In a preferred embodiment of the present invention, the vibration and sound insulation material is integrated with the electromagnetic control valve.
By integrating the vibration-absorbing and sound-insulating material with the electromagnetic control valve, the number of parts is reduced, and the labor for assembling the electromagnetic control valve to the housing is reduced.

In a preferred embodiment of the present invention, the cross-sectional shape of the annular mass- shaped cross-section of the vibration-absorbing and sound-proofing material is a circle.
Since the vibration-absorbing and sound-insulating material having a circular cross-sectional shape has a sufficient crushing margin, the vibration-absorbing effect is large.

In a preferred aspect of the present invention, the vibration-absorbing and sound-insulating material closes the opening of the recess.
The vibration-absorbing and soundproofing material closes the opening of the recess, thereby improving the sealing performance of the recess and improving the function of preventing the electromagnetic control valve from falling off, and the vibration of the electromagnetic control valve directly causes noise from the opening of the recess to the external environment. The occurrence of a situation that is transmitted as is suppressed.

In the electromagnetic control valve mounting portion structure of the compressor according to the present invention, the electromagnetic control valve is engaged with the snap ring via the vibration-absorbing and soundproofing material, so that the vibration of the electromagnetic control valve is suppressed from being transmitted to the housing. As a result, the vibration of the electromagnetic control valve is suppressed from being transmitted as noise to the external environment.
Since the vibration-absorbing and sound-insulating material having the massive cross-sectional shape has a sufficient crushing margin, the vibration-absorbing effect is large.

The structure of the electromagnetic control valve mounting portion of the compressor according to the first embodiment of the present invention applied to a variable displacement rocking plate compressor will be described.

As shown in FIG. 1, the variable displacement oscillating plate compressor A includes a main shaft 10, a rotor 11 fixed to the main shaft 10, and a swash plate 12 supported on the main shaft 10 so that the tilt angle can be varied. A rocking plate 13 that engages with the swash plate 12 is provided. A guide bar 14 that engages with the swing plate 13 and prevents the swing plate 13 from rotating is provided. The swash plate 12 is connected to the rotor 11 via a link mechanism that allows the tilt angle of the swash plate 12 to vary, and rotates in synchronization with the rotor 11 and thus the main shaft 10.
A piston 15 is moored to the swing plate 13 via a piston rod pivotally attached to the swing plate 13. The piston 15 is inserted into a cylinder bore 16 a formed in the cylinder block 16.
A plurality of pistons 15 are arranged at intervals in the circumferential direction.

A dish-shaped front housing 18 is disposed in which a crank chamber 17 that accommodates the main shaft 10, the rotor 11, the swash plate 12, the swing plate 13, and the guide rod 14 is formed in cooperation with the cylinder block 16. The main shaft 10 extends outside through the front housing 18. A shaft sealing member 19 for sealing the front housing penetrating portion of the main shaft 10 is disposed.
The main shaft 10 is connected to a vehicle engine (not shown) via an electromagnetic clutch 20 attached to the front housing 18.

A cylinder head 23 that forms a suction chamber 21 and a discharge chamber 22 is disposed. The suction chamber 21 is connected to an evaporator (not shown) of the in-vehicle air conditioner via a suction port (not shown). The discharge chamber 22 is connected to a condenser (not shown) of the in-vehicle air conditioner via a discharge port (not shown).
A valve plate 24 in which a suction hole and a discharge hole communicating with the bore 16a are formed between the cylinder block 16 and the cylinder head 23 is disposed. A discharge valve and a suction valve are mounted on the valve plate 24.
The crank chamber 17 and the suction chamber 21 communicate with each other through an orifice hole 24 a formed in the valve plate 24.

The front housing 18, the cylinder block 16, the valve plate 24, and the cylinder head 23 are integrally fastened by a plurality of bolts.

An electromagnetic control valve B for controlling the discharge capacity of the variable displacement rocking plate compressor A is fitted and fixed in a cylindrical recess 26 formed in the cylinder head 23 adjacent to the discharge chamber 22.
The electromagnetic control valve B includes a mechanical control valve 100 that opens and closes a communication path between the discharge chamber 22 and the crank chamber 17 in accordance with the suction pressure of the variable displacement oscillating plate compressor A, and a machine in accordance with the external environment. A cylindrical main body 120 including an electromagnetic solenoid 110 that controls an operating point of the type control valve 100 and a cylindrical connector portion 130 that is bent at approximately 90 degrees and extends from one end face of the main body 120 are provided. The connector portion 130 is formed with a smaller diameter than the main body 120. A lead wire (not shown) extending from an air conditioning control device (not shown) is connected to the connector unit 130.
In the variable displacement rocking plate compressor A, the rotation of the vehicle engine is transmitted to the main shaft 10 via the electromagnetic clutch 20, the main shaft 10 rotates, and the swash plate 12 rotates. The rotation of the swash plate 12 is converted into a swing and transmitted to the swing plate 13, and the swing of the swing plate 13 is converted into a reciprocating motion and transmitted to the piston 15. The piston 15 reciprocates in the cylinder bore 16a, and the refrigerant gas recirculated from the evaporator of the in-vehicle air conditioner flows into the suction chamber 21 through a suction port (not shown). The suction valve is opened, and the refrigerant gas is sucked into the cylinder bore 16a through the suction hole and compressed in the cylinder bore 16a. The discharge valve is opened, and the refrigerant gas flows into the discharge chamber 22 through the discharge hole, is discharged from the compressor through the discharge port, and flows into the condenser of the in-vehicle air conditioner.
By the electromagnetic control valve B, the tilt angle of the swash plate 12 is variably controlled according to the external environment, the swing angle of the swing plate 13 is variably adjusted, and the discharge capacity of the variable displacement swing plate compressor A is variably controlled. Thus, comfortable air conditioning is realized.

As shown in FIGS. 1 and 2, the electromagnetic control valve B is inserted into the concave portion 26 of the cylinder head 23, the main body 120 is buried in the concave portion 26, and the connector portion 130 projects outward from the opening end of the concave portion 26. .
A mass-shaped cross section made of a viscoelastic material such as rubber, more specifically, an annular vibration-proof and sound-proof material 140 having a substantially circular cross section is in contact with the outer edge of the one end surface of the main body 120 and the peripheral wall of the recess 26. The base portion of the connector part 130 is externally fitted. As shown in FIGS. 2 (a), 3 (a), and (b), the vibration-absorbing and sound-insulating material 140 has an annular plate portion 140a that extends radially inward, and further has a columnar diameter with a substantially U-section. A directional convex portion 140b is provided on the inner peripheral edge of the annular plate portion 140a. The inner peripheral edge of the annular plate portion 140 a abuts on the outer peripheral edge of the base portion of the connector portion 130, and the radial convex portion 140 b is tightly connected to the radial concave portion 130 a having a substantially U cross section formed on the base portion of the connector portion 130 for weight reduction. Is fitted. The vibration-absorbing and sound-insulating material 140 having the annular plate part 140a and the radial-direction convex part 140b covers the gap between the peripheral wall of the concave part 26 and the base part of the connector part 130 of the electromagnetic control valve B, and opens the opening part of the concave part 26. Closed.
A circumferential groove is formed at the opening end of the cylindrical recess 26 formed in the cylinder head 23, and a snap ring 150 is fitted and fixed to the circumferential groove. The vibration-absorbing and sound-insulating material 140 is pressed against the outer edge portion of the one end surface of the main body 120 and is pressed against the snap ring 150. As a result, the snap ring 150 is engaged with the electromagnetic control valve B via the vibration-absorbing and soundproofing material 140, and prevents the electromagnetic control valve B from falling off from the cylinder head 23.

Since the opening degree of the electromagnetic control valve B is controlled by an external signal composed of a pulse signal, the contact and separation between the valve body of the mechanical control valve 100 and the valve seat are repeated at a high frequency, and the electromagnetic control valve B vibrates. In the structure of the electromagnetic control valve mounting portion of the compressor according to the present embodiment, the electromagnetic control valve B engages with the snap ring 150 via the vibration-absorbing and soundproofing material 140, so that the vibration of the electromagnetic control valve B is transferred to the cylinder head 23. The transmission is suppressed, and consequently the vibration of the electromagnetic control valve B is suppressed from being transmitted as noise to the external environment.
The vibration-absorbing and sound-insulating material 140 pressed against the electromagnetic control valve main body 120, the snap ring 150, and the peripheral wall of the recess 26 has a massive cross-sectional shape and a sufficient crushing allowance, and therefore has a large vibration-absorbing effect.
Since the vibration-absorbing and sound-insulating material 140 closes the opening of the recess 26, the sealing performance of the recess 26 is improved, the function of preventing the electromagnetic control valve B from falling off, and the vibration of the electromagnetic control valve B is transmitted through the opening of the recess 26. The occurrence of a situation where noise is directly transmitted to the external environment is suppressed.

The cross-sectional shape of the vibration-absorbing and sound-insulating material 140 is not limited to a substantially circular cross section. A substantially semicircular cross section as shown in FIGS.
The ring-shaped plate portion 140a and the radial convex portion 140b may be removed, and the vibration-absorbing and soundproofing material 140 may be formed only with the massive cross-section portion. In this case, the vibration and soundproofing material 140 is realized as an O-ring. Transmission of vibration of the electromagnetic control valve B to the cylinder head 23 via the snap ring 150 is suppressed.

The present invention is not limited to the swing plate compressor, and can be widely used for electromagnetic control valve mounting portions of various types of compressors.

1 is a cross-sectional view of a variable displacement rocking plate compressor to which an electromagnetic control valve mounting portion structure of a compressor according to an embodiment of the present invention is applied. It is a figure of the electromagnetic control valve attachment part structure of the compressor concerning the 1st example of the present invention. (A) is a partial cross-sectional view of a variable displacement rocking plate compressor, and (b) is a top view of a connector portion of an electromagnetic control valve. 1 is a structural diagram of a vibration-absorbing and sound-insulating material constituting an electromagnetic control valve mounting portion structure of a compressor according to an embodiment of the present invention. (A) is a top view, (b) is a bb arrow line view of (a). (C), (d) is a figure corresponded to (b) of the modification of a vibration absorption soundproofing material.

Explanation of symbols

A Variable displacement rocking plate compressor B Electromagnetic control valve 17 Crank chamber 21 Suction chamber 22 Discharge chamber 26 Recess 100 Mechanical control valve 110 Electromagnetic solenoid 120 Main body 130 Connector portion 130a Radial recess 140 Damping soundproofing material 140a Ring plate portion 140b Radial direction convex part 150 Snap ring

Claims (4)

An electromagnetic control valve mounting portion of the compressor that prevents the electromagnetic control valve from falling off the housing by inserting a solenoid control valve into a recess formed in the compressor housing and using a snap ring that engages the electromagnetic control valve and the housing. a structure, a snap ring is engaged with the electromagnetic control valve through a vibration absorbing acoustic insulation, vibration absorbing soundproofing material and annular massive cross section in contact with the one end outer edge of the snap ring and the housing recess peripheral wall and an electromagnetic control valve An annular plate portion extending radially inward from the annular block section and contacting one end of the electromagnetic control valve, and the inner peripheral edge portion of the annular block section and the annular plate portion are in an external environment. Electromagnetic control valve mounting part structure of a compressor characterized by being exposed . The structure for mounting an electromagnetic control valve for a compressor according to claim 1, wherein the vibration-absorbing and sound-insulating material is integrated with the electromagnetic control valve. The structure of the electromagnetic control valve mounting portion for a compressor according to claim 1 or 2, wherein the cross-sectional shape of the annular mass- shaped cross-section of the vibration-absorbing and sound-insulating material is a circle. The electromagnetic control valve mounting portion structure for a compressor according to any one of claims 1 to 3, wherein the vibration-absorbing and sound-insulating material closes the opening of the concave portion.

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