CN216098762U

CN216098762U - Liquid storage structure

Info

Publication number: CN216098762U
Application number: CN202121910944.4U
Authority: CN
Inventors: 何晓兵; 李孟强; 郎进军; 李坚忠
Original assignee: Zhe Jiang Xin Yuan Electric Appliance Manufacture Co ltd
Current assignee: Zhe Jiang Xin Yuan Electric Appliance Manufacture Co ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-03-22
Anticipated expiration: 2031-08-16

Abstract

The utility model discloses a liquid storage structure, which comprises a liquid sealing ring, a needle bearing, a liquid storage cavity sleeve and a cylinder, wherein the liquid sealing ring is arranged on the liquid storage cavity sleeve; a liquid sealing ring is arranged at a position, close to the output of the electric tool, on the outer side of the air cylinder, a needle bearing is arranged at one end, far away from the output of the electric tool, of the liquid sealing ring, a liquid storage cavity sleeve is arranged at one end, far away from the liquid sealing ring, of the needle bearing, and the liquid storage cavity sleeve is communicated with a gas suction and exhaust hole of the air cylinder; the utility model provides a liquid storage structure for a ceiling operation electric tool, which has the advantages of simple and reasonable structure, convenience in installation and use, capability of prolonging the service life of the electric tool and multiple protection.

Description

Liquid storage structure

Technical Field

The utility model relates to the field of electric tools, in particular to a liquid storage structure.

Background

The electric hammer tool is powered by a motor, a piston is driven to do linear reciprocating motion through a swing rod bearing or a crankshaft connecting rod mechanism, air is compressed in a reciprocating mode, gas in a cylinder generates periodic pressure change, the changed air pressure drives a punching hammer, continuous hammering force is transmitted to a drill bit or a tool head through a hammer rod, and meanwhile the cylinder does rotary motion cutting through gear pair transmission, so that the purpose of drilling or crushing operation is achieved. The piston, the impact hammer and the cylinder bear reciprocating and rotating compound motion to generate larger friction and high temperature.

The existing similar electric hammer products in the current market generally have short service life and are not durable, lubricating oil is coated on a relative motion part and an O-shaped ring sealing element in advance basically, dry friction is prevented from being generated in the motion process, the service life of a friction pair is ensured, the crudeness and the particularity of the suspended ceiling operation determine that impact motion mechanisms such as a punch hammer, a hammer rod and the like are vertically downward under the action of gravity, the impact motion mechanisms are opposite to the drilling direction and do reciprocating and rotating combined motion to generate larger friction and high temperature, the pre-coated lubricating oil is influenced by the high temperature and the gravity, no supplementary lubrication circulation exists, an oil film is difficult to form on the surface of the impact motion part, the oil film is usually consumed in a short time, two friction byproducts generate dry friction, the impact motion part is locked by a pull cylinder, the O-shaped ring sealing element is worn and failed too early, and the function of the product is lost early.

Disclosure of Invention

The utility model overcomes the defects of the prior art and provides the liquid storage structure for the electric tool for ceiling operation, which has the advantages of simple and reasonable structure, convenience in installation and use, capability of prolonging the service life of the electric tool and multiple protection.

The technical scheme of the utility model is as follows:

a liquid storage structure comprises a liquid sealing ring, a needle bearing, a liquid storage cavity sleeve and a cylinder; a liquid sealing ring is arranged at a position, close to the output of the electric tool, on the outer side of the air cylinder, a needle bearing is arranged at one end, far away from the output of the electric tool, of the liquid sealing ring, a liquid storage cavity sleeve is arranged at one end, far away from the liquid sealing ring, of the needle bearing, and the liquid storage cavity sleeve is communicated with an air suction and exhaust hole of the air cylinder.

Furthermore, the needle roller bearing further comprises a bearing sleeve, and the bearing sleeve is arranged on the outer side of the needle roller bearing.

Furthermore, the liquid storage cavity sleeve is integrally in a circular column shape, one side of the liquid storage cavity sleeve, which is close to the cylinder, is provided with a circular liquid storage space, and one end, which is far away from the liquid sealing ring, of the liquid storage space is provided with an inclined plane.

Furthermore, one end of the inclined plane is matched with the air suction and exhaust holes of the cylinder.

Furthermore, the liquid sealing ring is integrally in a circular ring column shape, and at least two circular ring-shaped bosses are arranged on the outer side of the liquid sealing ring.

Furthermore, one end of the inner side of the liquid sealing ring, which is far away from the needle bearing, is provided with an inclined plane which is far away from the needle bearing.

Furthermore, an L-shaped accommodating space is arranged at one side of the lower part close to the needle bearing, and an annular boss is arranged at the middle position of the L-shaped accommodating space.

Further, the annular boss is arranged on one side, close to the inclined plane, of the L-shaped accommodating space.

Further, the bearing sleeve completely covers the outside of the needle bearing.

Further, the outer diameter of the bearing sleeve is equal to that of the liquid storage cavity sleeve, and the inner diameter of one end, close to the needle bearing, of the liquid storage cavity sleeve is smaller than that of the needle bearing.

Compared with the prior art, the utility model has the advantages that:

1. the utility model realizes that liquid in the liquid storage cavity sleeve penetrates the lubricating cylinder and other parts near the cylinder, such as a piston and a punching hammer in an electric hammer, inwards along the inclined plane of the liquid storage space through the air suction and exhaust holes of the cylinder under the action of the formed high temperature and gravity in the operation process of the cylinder, so that an oil film is formed as soon as possible, and continuous powerful supplement and guarantee are provided.

2. The bearing sleeve solves the assembly and disassembly problems of the needle bearing. The bearing sleeve overcomes the axial play of the needle bearing and helps to fix the needle bearing. Tiny grit and dust that drop among the furred ceiling operation process are then effectively sealed and are blockked by the liquid seal circle of fixing on the head shell, avoid getting into inside the instrument, cause the damage.

Drawings

FIG. 1 is a schematic overall schematic of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic view of a use environment of the present invention;

FIG. 4 is a cross-sectional view of the liquid seal ring, bearing housing, needle bearing and reservoir housing of the present invention.

The labels in the figure are: the liquid seal device comprises a liquid seal ring 1, a circular boss 11, a circular boss 12, a needle bearing 2, a liquid storage cavity sleeve 3, a liquid storage space 31, a cylinder 4, an air suction and exhaust hole 41 and a bearing sleeve 5.

Detailed Description

The utility model is further described with reference to the following figures and detailed description.

As shown in fig. 1 to 4, a liquid storage structure includes a liquid sealing ring 1, a needle bearing 2, a liquid storage cavity sleeve 3 and a cylinder 4; the position that is close to electric tool output in the cylinder 4 outside sets up liquid sealing ring 1, and the one end that electric tool output was kept away from to liquid sealing ring 1 sets up bearing 2, and bearing 2 keeps away from the one end that liquid sealing ring 1 and sets up stock solution chamber cover 3, and stock solution chamber cover 3 and cylinder 4 inhale exhaust port 41 UNICOM. Therefore, in the operation process of the cylinder 4, under the action of the formed high temperature and gravity, the liquid in the liquid storage cavity sleeve 3 penetrates the lubricating cylinder 4 and other parts near the cylinder 4, such as a piston and a hammer in an electric hammer, inwards along the inclined plane of the liquid storage space 31 through the air suction and exhaust hole 41 of the cylinder 4, so that an oil film is formed as soon as possible, and continuous powerful supplement and guarantee are provided.

Preferably, the needle roller bearing further comprises a bearing sleeve 5, and the bearing sleeve 5 is arranged outside the needle roller bearing 2. The bearing sleeve 5 solves the problem of assembling and disassembling the needle bearing 2. The bearing sleeve 5 overcomes the axial play of the needle bearing 2 and assists in its fixing. In particular, the bearing sleeve 5 completely covers the outside of the needle bearing 2. The outer diameter of the bearing sleeve 5 is equal to the outer diameter of the liquid storage cavity sleeve 3, and the inner diameter of one end, close to the needle roller bearing 2, of the liquid storage cavity sleeve 3 is smaller than the inner diameter of the needle roller bearing 2. The needle bearing 2 can be assembled better.

Preferably, the liquid storage cavity sleeve 3 is in a circular column shape as a whole, a circular liquid storage space 31 is arranged on one side of the liquid storage cavity sleeve close to the cylinder 4, and an inclined plane is arranged at one end, far away from the liquid sealing ring 1, of the liquid storage space 31. One end of the inclined surface is fitted into the air intake and exhaust hole 41 of the cylinder 4. That is, one end of the general slope is located at the middle position of the suction and exhaust hole 41, so that the stored liquid can flow into the cylinder 4 to soak the corresponding parts.

The liquid sealing ring 1 is in a circular column shape as a whole, and at least two circular bosses 11 are arranged on the outer side of the liquid sealing ring 1. Thereby forming a multi-layer external fixation and sealing function. One end of the inner side of the liquid seal ring 1, which is far away from the needle bearing 2, is provided with an inclined surface which is far away from the needle bearing 2. An effective upper sealing effect can be formed. An L-shaped accommodating space is arranged at one side of the lower part close to the needle bearing 2, and an annular boss 12 is arranged at the middle position of the L-shaped accommodating space. The installation is convenient for once, and then improves holistic installation leakproofness. The annular boss 12 is arranged on one side of the L-shaped installation space close to the inclined plane, so that the overall structure is more stable, and the fixing effect is better.

In summary, the hydraulic ring 1 is press-fitted on the head casing of the electric tool, the needle roller bearing 2 is press-fitted into the inner hole of the bearing sleeve 5 and is press-fitted on the head casing, then the liquid storage cavity sleeve 3 is press-fitted into the head casing for fixation, and finally the liquid storage (generally grease) is pre-stored in the liquid storage space 31 of the liquid storage cavity sleeve 3.

In the process of vertically hanging the ceiling upwards by the electric tool, the motor provides power, as shown in the figure, the piston is driven by a swing rod bearing of the electric tool to do linear reciprocating motion in the cylinder 4, air is compressed in a reciprocating mode, so that continuous hammering force is generated among the impact hammer, the hammer rod and the drill bit, high temperature is generated inside the tool, liquid storage (grease) stored in the liquid storage cavity sleeve 3 in the head shell penetrates and lubricates impact motion mechanisms such as the piston and the impact hammer inwards along the inclined plane of the liquid storage space 31 in the liquid storage cavity sleeve 3 through the air suction and exhaust hole 41 of the cylinder 4 under the action of high temperature and gravity, and continuous powerful supplement and guarantee are provided for forming an oil film on the surfaces of the impact motion parts of the piston and the impact hammer as soon as possible. Tiny grit and dust that drop among the furred ceiling operation process are then effectively sealed and are blockked by liquid seal ring 1 of fixing on the head shell, avoid getting into inside the instrument, cause the damage.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the spirit of the present invention, and these modifications and decorations should also be regarded as being within the scope of the present invention.

Claims

1. A liquid storage structure, characterized in that: the device comprises a liquid sealing ring, a needle bearing, a liquid storage cavity sleeve and a cylinder; a liquid sealing ring is arranged at a position, close to the output of the electric tool, on the outer side of the air cylinder, a needle bearing is arranged at one end, far away from the output of the electric tool, of the liquid sealing ring, a liquid storage cavity sleeve is arranged at one end, far away from the liquid sealing ring, of the needle bearing, and the liquid storage cavity sleeve is communicated with an air suction and exhaust hole of the air cylinder.

2. A liquid storage structure as claimed in claim 1, wherein: the needle roller bearing further comprises a bearing sleeve, and the bearing sleeve is arranged on the outer side of the needle roller bearing.

3. A liquid storage structure as claimed in claim 1, wherein: the liquid storage cavity sleeve is integrally in a circular column shape, one side of the liquid storage cavity sleeve, which is close to the air cylinder, is provided with a circular liquid storage space, and one end, which is far away from the liquid sealing ring, of the liquid storage space is provided with an inclined plane.

4. A liquid storage structure according to claim 3, wherein: one end of the inclined plane is matched with the air suction and exhaust holes of the cylinder.

5. A liquid storage structure as claimed in claim 1, wherein: the liquid sealing ring is integrally in a circular ring column shape, and at least two circular ring-shaped bosses are arranged on the outer side of the liquid sealing ring.

6. A liquid storage structure according to claim 5, wherein: and one end of the inner side of the liquid sealing ring, which is far away from the needle bearing, is provided with an inclined plane which is far away from the needle bearing.

7. A liquid storage structure according to claim 6, wherein: an L-shaped accommodating space is arranged at one side of the lower part close to the needle bearing, and an annular boss is arranged at the middle position of the L-shaped accommodating space.

8. A liquid storage structure according to claim 7, wherein: the annular boss is arranged on one side of the L-shaped accommodating space close to the inclined plane.

9. A liquid storage structure as claimed in claim 2, wherein: the bearing sleeve completely covers the outside of the needle bearing.

10. A liquid storage structure as claimed in claim 2, wherein: the outer diameter of the bearing sleeve is equal to that of the liquid storage cavity sleeve, and the inner diameter of one end, close to the needle bearing, of the liquid storage cavity sleeve is smaller than that of the needle bearing.