CN217354669U

CN217354669U - Leather cup pressing plate and valve plate fixing seat

Info

Publication number: CN217354669U
Application number: CN202220102794.2U
Authority: CN
Inventors: 徐骁
Original assignee: Nanjing Yinuoji Medical Technology Co ltd
Current assignee: Nanjing Yinuoji Medical Technology Co ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-09-02
Anticipated expiration: 2032-01-14
Also published as: CN217898122U; CN218760337U

Abstract

The utility model provides a leather cup clamp plate and valve block fixing base, leather cup clamp plate embedding leather cup in and fixed connection leather cup and connecting rod seat, the lateral wall of leather cup clamp plate is round platform shape, and its lateral wall has the fillet with the limit of being connected of diapire. The valve plate fixing seat is positioned above the leather cup pressing plate and is installed in a manner of being tightly attached to the inner wall of the air cylinder; the top surface of valve block fixing base is equipped with glossy valve block installation face, installs the valve block on the valve block installation face, goes up the valve block and hugs closely valve block installation face. The air compressor side cover seals the air compressor outer cover, and a drawing blind hole is formed in the middle of the air compressor outer cover and used for drawing and disassembling the air compressor side cover from the air compressor outer cover; an upper boss and a lower boss are distributed on the side wall of the side cover of the air compressor, and a sealing ring is arranged between the upper boss and the lower boss. The leather cup pressing plate, the valve plate fixing seat and the air compressor side cover share one set of forming die, so that the rubber cup pressing plate, the valve plate fixing seat and the air compressor side cover can be synchronously jacked up by the thimble, the processing efficiency is improved, and the die cost is reduced.

Description

Leather cup pressing plate and valve plate fixing seat

Technical Field

The utility model belongs to the technical field of the air compressor machine, concretely relates to leather cup clamp plate and valve block fixing base.

Background

The air compressor is used for providing air source power, is a device for converting mechanical energy of the motor into gas pressure energy, and is a core device of a pneumatic system. The motor drives the air compressor to make the crankshaft rotate and drive the connecting rod to make the piston reciprocate to change the volume of the cylinder. Because of the change of the pressure in the cylinder, the air enters the cylinder through the air inlet valve, and in the compression stroke, the compressed air enters the air storage tank through the exhaust pipe under the action of the exhaust valve due to the reduction of the volume of the cylinder.

For example, patent publication No. CN2748708 discloses a novel funnel-shaped oil-free lubrication air compressor connecting rod piston, which is composed of a connecting rod assembly and a piston head connected with the connecting rod assembly, and is characterized in that the connecting rod assembly comprises a circular insert ring embedded with a bearing, and the piston head and the circular insert ring are connected together through a conical funnel rod; the top plane of the piston head is provided with a circular flange, the upper part of the piston head is fixed with a pressing leather cup through a fastening screw and a leather cup pressing plate, and the bottom surface of the leather cup pressing plate is matched with the concave surface at the upper part of the piston head. The structure is beneficial to resisting the piston force, so that the fatigue strength of the connecting rod is increased, and the reliability of the compressor is enhanced; meanwhile, the processing is simple, and the installation is convenient.

The patent of publication No. CN204344420U discloses a positioning structure for a valve plate of an air compressor, wherein a boss or an end face with a corresponding size is added on a limiting block of an exhaust valve plate, and a groove or a boss matched with the boss is added on a valve plate, so that the limiting block of the exhaust valve plate and the valve plate are positioned when being installed, and the valve plate is also positioned; the utility model provides high installation effectiveness and installation accuracy, and the screw is slightly not hard up the time, the valve block can not rotate, effectively prevents to shorten because of the air compressor machine life-span that the screw is slightly not hard up to cause.

The leather cup pressing plate of the existing air compressor is usually tightly attached to the leather cup to press the leather cup, the folding degree of the leather cup is fixed, and the air quantity cannot be flexibly controlled. The contact surface of the existing valve plate fixing seat and the valve plate is rough, the service life of the thin valve plate is influenced, and the top surface and the bottom surface of the valve plate fixing seat are of planar structures and can interfere with other parts. The side of current air compressor machine side cap through the bolt fastening in air compressor machine dustcoat, the installation of air compressor machine side cap is dismantled hard and is wasted time to the bolt quality is heavier, has increased the whole quality of air compressor machine, and the setting up of bolt hole leads to screw department easy laying dust moreover, and sealing performance also receives the influence.

The existing leather cup pressing plate, the valve block fixing seat and the side cover of the air compressor are heavy in weight, and the portability of the small air compressor is influenced.

The existing leather cup pressing plate, the valve plate fixing seat and the air compressor side cover are formed by a plurality of dies through respective die-casting, so that the die cost is improved, and the processing efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a leather cup clamp plate, valve block fixing base, air compressor machine side cap and forming die thereof to technical problem more than solving.

The utility model provides a following technical scheme:

a leather cup pressing plate is used for fixing a leather cup in an air compressor, the leather cup pressing plate is embedded into the leather cup and is fixedly connected with the leather cup and a connecting rod seat, the side wall of the leather cup pressing plate is in a truncated cone shape gradually expanding from top to bottom, a connecting edge of the side wall and the bottom wall of the leather cup pressing plate is provided with a round angle, and the connecting edge extrudes the leather cup, so that the bowl wall of the leather cup can move tightly to a cylinder wall after being folded.

Preferably, be equipped with annular boss on the diapire of leather cup clamp plate, be equipped with on the connecting rod seat with the annular seal groove of boss looks adaptation, the boss to extrude in the seal groove the leather cup to guarantee the gas tightness between leather cup clamp plate, leather cup and the connecting rod seat.

Preferably, the middle part of the leather cup pressing plate is provided with an avoiding hole for avoiding a lower valve plate mounting table positioned in the middle part of the connecting rod seat; countersunk head screw holes are respectively formed in the left side and the right side of the avoidance hole on the leather cup pressing plate, and countersunk head screws are mounted in the countersunk head screw holes to fix the leather cup pressing plate, the leather cup and the connecting rod seat.

A valve plate fixing seat is used for fixing a valve plate in an air compressor, is positioned above a leather cup pressing plate and is installed in a manner of being tightly attached to the inner wall of an air cylinder; the valve plate fixing seat is provided with an air hole, the top surface of the valve plate fixing seat is provided with a smooth valve plate mounting surface, an upper valve plate is fixedly mounted on the valve plate mounting surface through a first screw, and the upper valve plate is tightly attached to the valve plate mounting surface in a normal state; the valve block fixing seat is characterized in that a lower valve block mounting platform is arranged in the middle of a connecting rod seat of the air compressor, a lower valve block is mounted on the lower valve block mounting platform, and a sinking step surface for avoiding the lower valve block is arranged on the bottom surface of the valve block fixing seat.

Preferably, a strip-shaped groove is formed in the valve plate mounting surface.

Preferably, the top surface of the valve plate fixing seat is provided with weight reduction grooves on the left side and the right side of the valve plate mounting surface.

Preferably, the bottom surface of the valve plate fixing seat is provided with sinking grooves on the left side and the right side of the step surface, and the sinking grooves are located right above countersunk screws on the leather cup pressing plate.

The air compressor side cover is mounted on the side face of an air compressor outer cover and used for sealing the air compressor outer cover, and a drawing blind hole is formed in the middle of the air compressor side cover and used for drawing and detaching the air compressor side cover from the air compressor outer cover; the side wall of the air compressor side cover is distributed with a plurality of upper bosses and lower bosses protruding outwards, sealing rings are mounted between the upper bosses and the lower bosses, and the air compressor side cover is in interference fit with the air compressor housing through the extrusion sealing rings.

Preferably, the axial projections of the upper boss and the lower boss on the side cover of the air compressor are mutually staggered.

Preferably, a press-fitting body is formed in the middle of the inner side of the air compressor side cover, the drawing blind hole is axially formed in the press-fitting body, and an opening of the drawing blind hole faces the outer side of the air compressor side cover.

The utility model provides a forming die of leather cup clamp plate, valve block fixing base and air compressor machine side cap, includes mould and lower mould, be equipped with the die cavity of mutually supporting on mould and the lower mould, the die cavity include respectively with leather cup clamp plate the valve block fixing base with first die cavity, second die cavity and the third die cavity of air compressor machine side cap profile modeling, each communicate by the metal liquid runner between the die cavity, go up be equipped with on the mould with the inlet of metal liquid runner intercommunication.

Preferably, the molten metal is magnesium alloy; the valve plate mounting surface is ground to form a smooth surface; and a machining allowance is reserved at the position of the valve plate mounting surface on the second cavity and used for compensating the grinding thickness of the valve plate mounting surface.

An air compressor comprises the leather cup pressing plate, a valve block fixing seat and an air compressor side cover.

The utility model has the advantages that:

the utility model discloses a lateral wall of leather cup clamp plate is provided with the frustum of a cone that expands gradually from top to bottom, and the lateral wall of leather cup clamp plate has the fillet with the limit of being connected of diapire, utilizes the lateral wall of this frustum of a cone and connects the limit extrusion leather cup, makes the bowl wall of leather cup draw in the back and can hug closely cylinder wall reciprocating motion. The air volume can be controlled through the round angle of the connecting edge, when the round angle is larger, the larger the furled angle of the leather cup is, the smaller the sliding resistance of the leather cup is, and the smaller the power consumed by the air cylinder is; conversely, the smaller the fillet, the more power the cylinder is consuming to operate.

The fillet on this connection limit can also protect the leather cup of rubber material, prevents that leather cup and leather cup clamp plate friction in-process from being pricked by the leather cup clamp plate of metal material and disconnected.

The boss on the bottom wall of the leather cup pressing plate extrudes the leather cup into the sealing groove on the connecting rod seat so as to ensure the air tightness between the leather cup pressing plate, the leather cup and the connecting rod seat and prevent the leather cup from loosening in the moving process.

The utility model discloses a top surface of valve block fixing base is equipped with glossy valve block installation face, and ultra-thin valve block is fixed in on this valve block installation face by the screw, and hugs closely valve block installation face. The smooth valve plate mounting surface prevents the valve plate which is opened and closed frequently from being abraded, and the service life of the valve plate is prolonged; meanwhile, the sealing performance between the valve plate and the valve plate mounting surface is improved.

The utility model discloses an air compressor machine side cap is installed in the side of air compressor machine dustcoat, and utilizes boss and sealing washer cooperation sealed air compressor machine dustcoat. The middle part of air compressor machine side cap is equipped with draws the blind hole, utilizes to draw the frock and inhales to draw in the blind hole and draw the air compressor machine side cap and draw the dismantlement from the outer cover of air compressor machine. This air compressor machine side cap utilizes and draws the blind hole and replace the mode of twisting the bolt soon commonly used and dismantle the air compressor machine side cap, has alleviateed the air compressor machine weight that the bolt occupy to dustproof sealing nature is better.

The utility model discloses a forming die simultaneous molding leather cup clamp plate, valve block installation face and air compressor machine side cap, these three parts all are the part in foraminiferous/groove, and it is synchronous ejecting with the part to utilize the thimble when the drawing of patterns is more convenient for to the common mode die-casting shaping, reduces the mould cost, improves machining efficiency.

Drawings

The accompanying drawings 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 and not to limit the invention. In the drawings:

FIG. 1 is a schematic top view of a leather cup pressing plate of the present invention;

FIG. 2 is a schematic view of the bottom structure of the leather cup pressing plate of the present invention;

FIG. 3 is a schematic bottom view of the valve plate holder of the present invention;

FIG. 4 is a schematic perspective view of the valve plate fixing seat of the present invention;

fig. 5 is a schematic top view of the air compressor side cover according to the present invention;

fig. 6 is a schematic cross-sectional structural view of the air compressor side cover of the present invention;

FIG. 7 is a schematic view of the mounting of the leather cup pressing plate and the valve plate fixing seat in the cylinder;

fig. 8 is a schematic view of the forming mold of the present invention;

fig. 9 is a schematic view of a lower mold structure of the forming mold of the present invention;

fig. 10 is a schematic view of the thimble installation structure in the lower mold of the present invention.

Labeled as: 1. a leather cup pressing plate; 2. a leather cup; 3. a connecting rod seat; 4. a connecting edge; 5. a boss; 6. a sealing groove; 7, a lower valve plate mounting table; 8. avoiding holes; 9. countersunk head screw holes; 10. a valve plate fixing seat; 11. an upper valve plate; 12. a lower valve plate; 13. a cylinder; 14. air holes; 15. mounting surfaces of the valve plates; 16. a first screw; 17. a second screw; 18. a step surface; a strip-shaped groove; 20. a weight reduction groove; 21. sinking a groove; 22. an air compressor side cover; 23. drawing the blind hole; 24. an upper boss; 25. a lower boss; 26. pressing the body; 27. an upper die; 28. a lower die; 29. a first cavity; 30. a second cavity; 31. a third cavity; 32. a molten metal flow channel; 33. a liquid inlet; 34. and (4) a thimble.

Detailed Description

Example 1

The embodiment provides a leather cup pressing plate for fixing a leather cup 2 in an air compressor, wherein the leather cup pressing plate 1 is embedded into the leather cup 2 and is fixedly connected with the leather cup 2 and a connecting rod seat 3.

The bowl wall of the cup 2 is slightly flared outwards. As shown in fig. 2, the side wall of the leather cup pressing plate 1 is in a truncated cone shape gradually expanding from top to bottom, the side wall of the leather cup pressing plate 1 and the connecting edge 4 of the bottom wall have a round angle, and the connecting edge 4 extrudes the leather cup 2, so that the inner wall of the air cylinder 13 can be tightly attached to move after the wall of the leather cup 2 is folded. The side wall of the leather cup 2 can be controlled to be folded by controlling the size of the round angle of the connecting edge 4, for example, when the round angle is small, the leather cup is less folded when the leather cup 2 is extruded, the friction resistance between the leather cup 2 and the cylinder wall is large, and the power of a storage battery is large.

As shown in fig. 1, an annular boss 5 is arranged on the bottom wall of the leather cup pressing plate 1, an annular sealing groove 6 matched with the boss 5 is arranged on the connecting rod seat 3, the boss 5 extrudes the leather cup 2 into the sealing groove 6, so that the air tightness between the leather cup pressing plate 1, the leather cup 2 and the connecting rod seat 3 is ensured, and meanwhile, the leather cup 2 can be prevented from loosening in the moving process.

As shown in fig. 1 and 7, a lower valve plate mounting table 7 is arranged in the middle of a connecting rod seat 3 of the air compressor, and an avoiding hole 8 is formed in the middle of a leather cup pressing plate 1 and used for avoiding the lower valve plate mounting table 7. Countersunk head screw holes 9 are respectively formed in the left side and the right side of the avoidance hole 8 on the leather cup pressing plate 1, and countersunk head screws are installed in the countersunk head screw holes 9 to fix the leather cup pressing plate, the leather cup and the connecting rod seat.

The leather cup pressing plate 1 is made of magnesium alloy with low density so as to reduce the weight of the air compressor.

Example 2

As shown in fig. 3, 4 and 7, the present embodiment provides a valve plate fixing seat 10 for fixing a valve plate in an air compressor, wherein the valve plate fixing seat 10 is located above the leather cup pressing plate 1 in embodiment 1 and is installed to cling to the inner wall of the air cylinder 13.

The valve plate fixing seat 10 is made of magnesium alloy materials with low density, and weight reduction of the side cover of the air compressor is facilitated. The valve plate fixing seat 10 is provided with an air hole 14, the top surface of the valve plate fixing seat 10 is provided with a smooth valve plate mounting surface 15, the valve plate mounting surface 15 is fixedly provided with the upper valve plate 11 through a first screw 16, the upper valve plate 11 is tightly attached to the valve plate mounting surface 15 in a normal state and blocks the air hole, and when the air pressure acts on the upper valve plate 11, the free end of the upper valve plate 11 is upwards jacked relative to the air hole.

The valve plate mounting surface 15 is ground to be smooth in surface, and the smooth valve plate mounting surface 15 reduces friction between the valve plate and the valve plate mounting surface due to the fact that the upper/lower valve plates are thin in thickness, reduces abrasion to the valve plate and prolongs the service life of the valve plate.

As in embodiment 1, a lower valve plate mounting table 7 is disposed in the middle of the connecting rod base 3 of the air compressor, an air hole 14 is also disposed on the lower valve plate mounting table 7, a lower valve plate 12 is fixedly mounted on the lower valve plate mounting table 7 by a second screw, and a sunken step surface 18 for avoiding the lower valve plate is disposed on the bottom surface of the valve plate fixing base 10. The valve sheet mounting surface 15 is provided with a strip-shaped groove 19.

The top surface of the valve plate fixing seat 10 is provided with weight reduction grooves 20 on the left side and the right side of the valve plate mounting surface 15, and therefore the air compressor is further lightened.

The bottom surface of the valve plate fixing seat 10 is provided with sunk grooves 21 on the left side and the right side of the step surface 18, the sunk grooves 21 are positioned right above the countersunk screws on the leather cup pressing plate 1, the sunk grooves 21 can further avoid interference between the valve plate fixing seat 10 and the countersunk screws on the leather cup pressing plate 1, and a certain weight reduction effect is achieved.

Example 3

As shown in fig. 5 to 6, the present embodiment provides an air compressor side cover 22 mounted on a side surface of an air compressor housing for sealing the air compressor housing.

The air compressor side cover 22 is made of magnesium alloy materials with low density, and weight reduction of the air compressor side cover is facilitated. The middle part of the air compressor side cover 22 is provided with a drawing blind hole 23 for drawing and dismounting the air compressor side cover from the outer cover of the air compressor. The lateral wall of air compressor machine side cap 22 is gone up the distribution and is had a plurality of convex upper bosses 24 and lower boss 25 to the outside, goes up and installs the sealing washer between boss 24 and the lower boss 25, and air compressor machine side cap 22 is through interference fit between extrusion sealing washer and the air compressor machine dustcoat. The axial projections of the upper boss 24 and the lower boss 25 on the side cover 22 of the air compressor are mutually staggered.

Specifically, a press-fitting body 26 is formed in the middle of the inner side of the air compressor side cover 22, a blind drawing hole 23 is axially formed in the press-fitting body 26, and the opening of the blind drawing hole 23 faces the outer side of the air compressor side cover 22. When the air compressor side cover is disassembled, the air compressor side cover 22 is pulled out of the outer cover of the air compressor by utilizing the drawing tool matched with the drawing blind hole, the drawing force of the drawing tool can be vacuum adsorption force, or the drawing tool is screwed on the hole side wall of the drawing blind hole, and the air compressor side cover 22 is screwed down. In the embodiment, the drawing blind holes 23 are matched with the sealing rings to replace the bolt fixing mode for installing the side cover 22 of the air compressor, so that the using amount of bolts can be further reduced, and the weight of the air compressor is reduced; because the bolt mounting hole is cancelled, the sealing performance and the dustproof performance of the air compressor outer cover can be improved.

Example 4

As shown in fig. 8 to 10, the present embodiment provides a forming mold for a leather cup pressing plate 1, a valve sheet fixing seat 10 and an air compressor side cover 22, including an upper mold 27 and a lower mold 28, wherein cavities matched with each other are provided on the upper mold 27 and the lower mold 28, the cavities include a first cavity 29, a second cavity 30 and a third cavity 31, which are respectively communicated with the leather cup pressing plate of embodiment 1, the valve sheet fixing seat of embodiment 2 and the air compressor side cover profile of embodiment 3, and metal liquid flow channels 32 communicate between the cavities, and a liquid inlet 33 communicated with the metal liquid flow channels 32 is provided on the upper mold 27. When the upper die 27 and the lower die 28 are closed, the molten metal is injected into the cavity from the liquid inlet 33, and all parts are synchronously die-cast and molded.

The forming die has the advantages that the leather cup pressing plate 1, the valve plate fixing seat 10 and the air compressor side cover 22 share one die, and because the die is of a structure with holes/grooves, a finished product can be synchronously ejected out and demoulded by one set of ejector pins during demoulding, so that the processing efficiency is improved, and the die cost is reduced.

The molten metal is magnesium alloy. Because the valve plate mounting surface 15 needs to be ground, a machining allowance is reserved at the position of the valve plate mounting surface 15 on the second cavity 30 and used for compensating the grinding thickness of the valve plate mounting surface 15.

Example 5

The embodiment provides an air compressor, which comprises a leather cup pressing plate 1 in embodiment 1, a valve plate fixing seat 10 in embodiment 2 and an air compressor side cover 22 in embodiment 3.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A leather cup pressing plate is used for fixing a leather cup in an air compressor and is characterized in that the leather cup pressing plate is embedded into the leather cup and fixedly connected with the leather cup and a connecting rod seat, the side wall of the leather cup pressing plate is in a truncated cone shape gradually expanding from top to bottom, the connecting edge of the side wall and the bottom wall of the leather cup pressing plate is provided with a round angle, and the connecting edge extrudes the leather cup, so that the bowl wall of the leather cup can be tightly attached to a cylinder wall to move after being folded.

2. The leather cup pressing plate of claim 1, wherein an annular boss is arranged on the bottom wall of the leather cup pressing plate, an annular sealing groove matched with the boss is arranged on the connecting rod seat, and the boss extrudes the leather cup into the sealing groove so as to ensure the air tightness among the leather cup pressing plate, the leather cup and the connecting rod seat.

3. The leather cup pressing plate of claim 1, wherein a avoidance hole is formed in the middle of the leather cup pressing plate and used for avoiding a lower valve plate mounting table located in the middle of the connecting rod seat; countersunk head screw holes are respectively formed in the left side and the right side of the avoidance hole on the leather cup pressing plate, and countersunk head screws are mounted in the countersunk head screw holes to fix the leather cup pressing plate, the leather cup and the connecting rod seat.

4. A valve plate fixing seat is used for fixing a valve plate in an air compressor, and is characterized in that the valve plate fixing seat is positioned above a leather cup pressing plate in any one of claims 1 to 3 and is installed to be attached to the inner wall of an air cylinder; the valve plate fixing seat is provided with an air hole, the top surface of the valve plate fixing seat is provided with a smooth valve plate mounting surface, an upper valve plate is fixedly mounted on the valve plate mounting surface through a first screw, and the upper valve plate is tightly attached to the valve plate mounting surface in a normal state; the air compressor is characterized in that a lower valve block mounting table is arranged in the middle of a connecting rod seat of the air compressor, a lower valve block is mounted on the lower valve block mounting table, and a sunken step surface used for avoiding the lower valve block is arranged on the bottom surface of the valve block fixing seat.

5. The valve plate fixing seat according to claim 4, wherein the valve plate mounting surface is provided with a strip-shaped groove.

6. The valve plate fixing seat according to claim 4, wherein the top surface of the valve plate fixing seat is provided with weight reduction grooves on both left and right sides of the valve plate mounting surface.

7. The valve plate fixing seat according to claim 4, wherein the bottom surface of the valve plate fixing seat is provided with sinking grooves at the left and right sides of the step surface, and the sinking grooves are positioned right above the countersunk head screws on the leather cup pressing plate.