Air cylinder structure capable of improving power and facilitating exhaust

Abstract

The utility model discloses an air cylinder structure capable of improving power and facilitating exhaust, which comprises a cylinder body, a piston cavity is arranged in the cylinder body, and a connecting hole is arranged at one end of the cylinder body. An annular air groove is formed in the piston cavity, an exhaust groove is formed in one end of the outer side of the cylinder body, and an exhaust hole communicated with the piston cavity is formed in the exhaust groove. The annular air groove is formed in the piston cavity of the air cylinder sleeve, the air storage capacity in the air cylinder sleeve can be improved through the annular air groove, and therefore the pushing air pressure is improved, and the working efficiency of the hammer drill impacting piston mechanism is improved. The arranged exhaust groove is matched with the annular air groove, the exhaust effect can be guaranteed, air storage and pushing air pressure are improved, meanwhile, exhaust during reciprocating motion of the impact piston mechanism can be well guaranteed, and therefore components of the impact piston mechanism are high in working efficiency, and the service life of the components of the impact piston mechanism is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder sleeves, in particular to a cylinder structure which can improve power and facilitate exhaust. Background Art

[0002] Hammer drill is an impact tool we commonly use. An impact piston mechanism is provided inside the hammer drill. The impact piston mechanism is connected to the driving motor through transmission. The driving motor drives the impact piston mechanism to reciprocate through the crankshaft eccentric pin assembly.

[0003] The reciprocating motion of the impact piston mechanism is actually the relative motion between the cylinder and the piston, and the work is performed by generating air pressure thrust through the relative motion between the cylinder and the piston. Therefore, a structure is generally set on the cylinder to ensure normal operation. The piston cavity in the existing cylinder is a cylindrical straight cylinder. When in use, the amount of driving gas stored in the piston cavity is insufficient, resulting in a small driving air pressure, which makes the efficiency of the hammer drill impact piston mechanism low. Moreover, the exhaust structure on the existing cylinder sleeve is a simple exhaust hole. This kind of structural method has a poor exhaust effect. When the hammer drill moves relatively at a high frequency, it cannot guarantee a good exhaust effect, which reduces the life of the impact piston mechanism components. Therefore, technical improvements are needed to address the defects of the existing structure. Summary of the invention

[0004] The purpose of the utility model is to solve the problems raised in the above background technology and to provide a cylinder structure which can improve power and facilitate exhaust.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a cylinder structure that improves power and facilitates exhaust, including a cylinder body, a piston cavity is provided in the cylinder body, and a connecting hole is provided at one end of the cylinder body; an annular air groove is provided in the piston cavity, an exhaust groove is provided at one end of the outer side of the cylinder body, and an exhaust hole communicated with the piston cavity is provided in the exhaust groove.

[0006] In the above-mentioned cylinder structure for improving power and facilitating exhaust, the exhaust hole is located correspondingly between the annular air groove and the piston chamber opening.

[0007] In the above-mentioned cylinder structure for improving power and facilitating exhaust, the distance L1 between the annular gas groove and the bottom of the piston chamber is smaller than the distance L2 between the annular gas groove and the opening of the piston chamber.

[0008] In the above-mentioned cylinder structure for improving power and facilitating exhaust, the annular gas groove includes a groove bottom and groove slopes symmetrically arranged on both sides of the groove bottom.

[0009] In the above-mentioned cylinder structure for improving power and facilitating exhaust, arc chamfers are respectively provided at the connection between the groove bottom and the groove slopes on both sides, and at the connection between the groove slopes and the piston chamber.

[0010] In the above-mentioned cylinder structure for improving power and facilitating exhaust, a connecting end is provided at the end of the cylinder body, and a transition connecting inclined surface is provided at the connection between the connecting end and the cylinder body.

[0011] In the above-mentioned cylinder structure for improving power and facilitating exhaust, one end of the exhaust groove passes through the end of the cylinder body, and the other end is provided with an exhaust arc slope.

[0012] In the above-mentioned cylinder structure for improving power and facilitating exhaust, the angle α between the exhaust arc slope and the side surface of the cylinder body is less than 45 degrees.

[0013] In the above-mentioned cylinder structure for improving power and facilitating exhaust, an outward expansion port is provided at the end of the exhaust hole communicating with the piston chamber.

[0014] The utility model has the following beneficial effects:

[0015] The utility model provides an annular air groove in the piston cavity of the cylinder sleeve, the annular air groove can increase the air storage capacity in the cylinder sleeve, thereby increasing the pushing air pressure, and further improving the working efficiency of the hammer drill impact piston mechanism; the arranged exhaust groove cooperates with the annular air groove and can ensure the exhaust effect, while increasing the air storage and pushing air pressure, it can also well ensure the exhaust of the impact piston mechanism when it performs reciprocating motion, thereby making the impact piston mechanism components have high working efficiency and increased service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a planar structural diagram of the utility model;

[0017] Figure 2 yes Figure 1 The cross-sectional structure diagram in the AA direction;

[0018] Figure 3 yes Figure 2 Enlarged view of part A in . DETAILED DESCRIPTION

[0019] The utility model is further described in conjunction with the accompanying drawings.

[0020] See also Figures 1 to 3 The utility model provides a cylinder structure for improving power and facilitating exhaust, including a cylinder body 1, a piston chamber 2 is arranged in the cylinder body 1, and a connecting hole 3 is arranged at one end of the cylinder body 1; a connecting end 10 is arranged at the end of the cylinder body 1, and a transition connecting slope 11 is arranged at the connection between the connecting end 10 and the cylinder body 1; the cylinder body 1 is connected to the impact piston mechanism through the connecting hole 3, and the transition connecting slope 11 arranged between the connecting end 10 and the cylinder body 1 can improve and strengthen the connection strength between the two.

[0021] An annular air groove 4 is provided in the piston chamber 2, an exhaust groove 5 is provided at one end of the outer side of the cylinder body 1, and an exhaust hole 6 communicated with the piston chamber 2 is provided in the exhaust groove 5, which can improve the air storage and driving air pressure while ensuring the exhaust of the impact piston mechanism when it performs reciprocating motion.

[0022] In order to better increase the driving air pressure and ensure the exhaust effect, the exhaust hole 6 is located between the annular air groove 4 and the opening of the piston chamber 2, and the distance L1 between the annular air groove 4 and the bottom of the piston chamber 2 is smaller than the distance L2 between the annular air groove 4 and the opening of the piston chamber 2.

[0023] Specifically, the annular gas groove 4 includes a groove bottom 7 and groove slopes 8 symmetrically arranged on both sides of the groove bottom 7, so as to further increase the gas storage capacity of the annular gas groove.

[0024] In order to further improve the efficiency of the relative movement between the cylinder body and the piston, arc chamfers 9 are respectively provided at the connection between the groove bottom 7 and the groove slopes 8 on both sides, and at the connection between the groove slopes 8 and the piston chamber 2.

[0025] Furthermore, in order to better ensure the exhaust effect, one end of the exhaust groove 5 passes through the end of the cylinder body 1, and the other end is provided with an exhaust arc slope 12. The angle α between the exhaust arc slope 12 and the side of the cylinder body 1 is less than 45 degrees, and the end of the exhaust hole 6 communicating with the piston chamber 2 is provided with an outward expansion port 13.

[0026] The above is a detailed introduction to a cylinder structure for improving power and facilitating exhaust provided by an embodiment of the utility model. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the technical solution disclosed by the utility model; at the same time, for general technicians in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation of the utility model.

Claims

1. A cylinder structure for improving power and facilitating exhaust, comprising a cylinder body (1), a piston chamber (2) being provided in the cylinder body (1), and a connecting hole (3) being provided at one end of the cylinder body (1); the characteristics are: An annular air groove (4) is provided in the piston chamber (2), an exhaust groove (5) is provided at one end of the outer side of the cylinder body (1), and an exhaust hole (6) communicating with the piston chamber (2) is provided in the exhaust groove (5).

2. A cylinder structure for improving power and facilitating exhaust according to claim 1, characterized in that: The exhaust hole (6) is located correspondingly between the annular air groove (4) and the opening of the piston chamber (2).

3. A cylinder structure for improving power and facilitating exhaust according to claim 1, characterized in that: The distance L1 between the annular air groove (4) and the bottom of the piston chamber (2) is smaller than the distance L2 between the annular air groove (4) and the opening of the piston chamber (2).

4. A cylinder structure for improving power and facilitating exhaust according to any one of claims 1 to 3, characterized in that: The annular air groove (4) comprises a groove bottom (7) and groove slopes (8) symmetrically arranged on both sides of the groove bottom (7).

5. A cylinder structure for improving power and facilitating exhaust according to claim 4, characterized in that: Arc chamfers (9) are provided at the connection points between the groove bottom (7) and the groove slopes (8) on both sides, and at the connection points between the groove slopes (8) and the piston chamber (2).

6. A cylinder structure for improving power and facilitating exhaust according to claim 1, characterized in that: The end of the cylinder body (1) is provided with a connecting end (10), and the connection between the connecting end (10) and the cylinder body (1) is provided with a transition connecting inclined surface (11).

7. A cylinder structure for improving power and facilitating exhaust according to claim 1, characterized in that: One end of the exhaust groove (5) passes through the end of the cylinder body (1), and the other end is provided with an exhaust arc-shaped inclined surface (12).

8. A cylinder structure for improving power and facilitating exhaust according to claim 7, characterized in that: The included angle α between the exhaust arc inclined surface (12) and the side surface of the cylinder body (1) is less than 45 degrees.

9. The cylinder structure for improving power and facilitating exhaust according to claim 1, characterized in that: An outward expansion port (13) is provided at the end of the exhaust hole (6) communicating with the piston chamber (2).

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