CN2738954Y - Shock Absorbing Structure of Pneumatic Tools - Google Patents

Abstract

A shock absorbing structure for a pneumatic tool can be used to absorb shock for an impact unit of the pneumatic tool. The shock absorbing device includes a main body having a mounting portion, a first bearing hole and a receiving hole sequentially opened in the mounting portion, and a first fixed portion arranged at the bottom side of the first bearing hole; a control displacement cylinder for mounting the impact unit, the control displacement cylinder having a cylinder body that can be sealably and movably inserted into the receiving hole of the main body; a first shock absorbing member having a telescopic body for buffering between the main body and the control displacement cylinder, the telescopic body being tubular and having a plurality of telescopic parts that can be axially deformed so that the telescopic body can be compressed or stretched.

Description

Shock Absorbing Structure of Pneumatic Tools

technical field

The utility model relates to pneumatic tools, in particular to a shock absorbing structure used in pneumatic tools.

Background technique

Existing pneumatic tools, especially pneumatic reciprocating tools, have large vibrations generated by the action of the impact unit, but do not have a good shock absorption effect, which is likely to cause work injuries such as hand injuries to users.

Therefore, there are various vibration-reducing designs and products on the market. However, the structure is nothing more than the use of components such as coil springs. The effect of damping is not ideal. Such components are very easy to damage and need to be replaced frequently.

Utility model content

In view of the above-mentioned deficiency, the creator has painstakingly researched and obtained the shock-absorbing structure of the utility model pneumatic tool.

The main purpose of the present utility model is to provide a shock absorbing structure of a pneumatic tool, the shock absorbing parts of which can be stretched so as to have a better shock absorbing effect.

The second purpose of the utility model is to provide a shock-absorbing structure of a pneumatic tool, which has a simple structure, good strength, convenient manufacture and low cost.

In order to achieve the purpose of the previous disclosure, the utility model provides a shock absorbing structure of a pneumatic tool, which can be used for shock absorbing of an impact unit of the pneumatic tool. The shock absorbing device includes a body with a mounting part, a first A bearing hole and an accommodating hole are sequentially opened on the installation part, and a first solid part is arranged on the bottom side of the first bearing hole; a control-shifting cylinder is used for installing the impact unit, and the control-moving cylinder has a The cylinder body can be sealed and movably inserted in the accommodation hole of the body; a first shock absorber has a telescopic body for buffering between the body and the shifting cylinder, the telescopic body is generally tube-shaped and formed The stretchable parts can be axially deformed, so that the stretchable body can be compressed or stretched.

Description of drawings

Fig. 1 is a side view combined sectional view of a preferred embodiment of the utility model;

Fig. 2 is a side view sectional view of the control transfer cylinder of a preferred embodiment of the utility model;

Fig. 3 to Fig. 5 are structural diagrams of the deformation holes of the shock absorber in a preferred embodiment of the present invention, which are triangular, arc and rhombus respectively;

Fig. 6 is a structural diagram of filling another buffer material in the deformation hole;

Fig. 7 is a structural diagram in which the telescopic body of the shock absorber is a buffer;

Fig. 8 is a side view sectional view of a preferred embodiment of the utility model, showing the state of arranging obliquely;

Fig. 9 is a side view sectional view of the control transfer cylinder of a preferred embodiment of the present invention, showing the state of spiral arrangement;

Fig. 10 is a side view sectional view of the control cylinder of a preferred embodiment of the utility model, showing that one expansion body is a circumferentially curved radially curved stretching part, and the other stretchable body is a plurality of radially curved receiving parts arranged in a circle. The state of the telescoping part;

Fig. 11 is a sectional view along the 11-11 secant line direction in Fig. 10;

Fig. 12 is a side view sectional view of the control-moving cylinder of a preferred embodiment of the utility model, showing that the expansion body is a state in which a plurality of axially curved stretchable parts are arranged in a circle;

Fig. 13 is a sectional view along the line 13-13 in Fig. 12 .

Detailed ways

In order to make a better understanding of the features and the achieved effects of the present utility model, the following preferred embodiments are given and illustrated as follows:

Please refer to Fig. 1 and Fig. 2, the damping structure of the pneumatic tool provided by a preferred embodiment of the utility model is to connect an impact unit 8; the damping device includes:

A body 10 has a mounting portion 11, a grip portion 12 is connected to the mounting portion 11, a first receiving hole 13, a receiving hole 14 and a second receiving hole 15 are sequentially opened in the mounting portion 11. A sealing ring groove 141 and an air groove 142 are arranged at a predetermined position of the accommodating hole 14, and a first solid part 16 (a screw hole in this embodiment) is arranged at one end of the first receiving hole 13, A second solid part 17 and a solid cover part 18 (the two are the same screw hole in this embodiment) are located at the opening of the second bearing hole 15, and an air passage 19 is passed from the bottom of the grip part 12 to the Air groove 142.

Wherein, the sealing ring groove 141 of the main body 10 is provided with a sealing ring 71 to provide an airtight effect.

A control cylinder 20 has a cylinder body 21 that can be movably inserted into the housing hole 14 of the body 10, the outer periphery of the cylinder body 21 is sealed by the sealing ring 71, an air chamber 22 is opened on the cylinder body 21 and It communicates with a screw hole 23 for screwing the impact unit 8 , and a plurality of air holes 24 lead from the air chamber 22 to the air channel 142 of the body 10 .

A first shock absorber 30 has a telescopic body 31 forming a middle hole 32, a first connecting portion 33 is integrally connected to the barrel body 21 of the shifting cylinder 20, and a second connecting portion 34 is connected to the telescopic body The other end of 31 is screwed to the first solid part 16 of the body 10; wherein, the telescopic body 31 is in the shape of a helical coil.

A second shock-absorbing member 40 has a telescopic body 41 forming a middle hole 42, a first joint 43 is integrally connected to the cylinder body 21 of the shifting cylinder 20, and a second joint 44 is connected to the telescopic body The other end of 41 is screwed to the first solid part 16 of the body 10; wherein, the telescopic body 41 is in the shape of a round tube, and it is arranged radially at intervals from the circumference to provide a number of deformation holes 45 in the shape of elongated holes. The portion 46 is formed between the adjacent deformation holes 45 and is formed with a plurality of stretchable portions 47 .

In this embodiment, the above-mentioned control cylinder 20, the first shock absorber 30 and the second shock absorber 40 are integrally molded by plastic injection, which can make it convenient and fast to manufacture; especially the materials with better elasticity, oil resistance and impact resistance Preferably, materials such as MC nylon MC NYLON, etc., other materials with good elasticity and strength such as rubber, foam, and Uril glue are also acceptable; they can be integrally formed by injection, or fused after separate injections , screw or riveting combination.

The operation and actuation situation of this embodiment are described as follows:

As shown in FIG. 2, each stretchable body 31, 41 of the first shock absorber 30 and the second shock absorber 40 can provide compression and tension deformation, especially the expansion and contraction of the second shock absorber 40 The portion 47 can provide better compression and tension deformation for good shock absorption.

In the above embodiment, the first shock absorber and the second shock absorber may have the same structure, that is, the first shock absorber also has the same elements as the deformation hole, the connecting portion, and the stretchable portion.

In addition to the above-mentioned embodiments, the control shifting cylinder, the first shock absorber and a second shock absorber of the present utility model can be further changed as follows:

As shown in Figure 3, the deformation holes 45A are triangularly spaced and arranged in forward and reverse directions; or, as shown in Figure 4, the deformation holes 45B of the shock absorber are arc-shaped holes; and, as shown in Figure 5, Its deformation hole 45C is a rhombus hole; in addition, its deformation hole can also be round hole, oval hole, V-shaped, S-shaped, trapezoidal etc.; The purpose of the utility model is deformation telescopic shock absorption.

As shown in Figure 6, it is the structure in which another cushioning material 61 is added to the deformation hole of the control-moving cylinder; With axial slots.

Furthermore, the arrangement of the deformation holes, in addition to the above-mentioned radial straight arrangement; as shown in Figure 8, it can be arranged radially obliquely, and its deformation holes 45D form an included angle; or, as As shown in FIG. 9, the deformation holes 45E are arranged in a spiral direction.

The shock absorber of the present utility model can also have the following structure, and its telescopic body is further improved and implemented, wherein:

In addition, as shown in FIG. 10 and FIG. 11 , the telescopic body 31A of the first shock absorber is a stretchable part 37 with a continuously curved radial cross-section around the entire circumference, which can also provide elastic deformation of compression or tension. However, the stretchable body 41B is in a state where a plurality of stretchable portions 47B having a continuously curved axial cross-section are arranged circumferentially, and a plurality of escape holes 48A are formed.

Furthermore, as shown in Fig. 12 and Fig. 13, the telescopic body 41C is a plurality of axially curved telescopic parts 47C arranged in a circumference, and a plurality of escape holes 48B are also formed, which can also achieve the function of telescopic shock absorption.

Illustrate by above embodiment, can summarize the characteristics of the present utility model as follows:

1. The shock-absorbing structure of the utility model pneumatic tool, the shock-absorbing parts can provide compression and tensile deformation, which can have a better shock-absorbing effect.

2. The damping structure of the pneumatic tool of the utility model has the advantages of simple structure, good overall strength, convenient manufacture and low cost.

Claims (10)

1. A shock-absorbing structure of a pneumatic tool, which can be used for shock absorption of an impact unit of the pneumatic tool, and is characterized in that the shock-absorbing device includes: A body with a mounting portion, a first receiving hole and an accommodating hole sequentially opened on the mounting portion, and a first fixing portion disposed on the bottom side of the first receiving hole; A control-moving cylinder is used for installing the impact unit, and the control-moving cylinder has a cylinder body that can be sealed and movably inserted into the accommodating hole of the body; A first shock absorber, which has a telescopic body for buffering between the main body and the shifting cylinder. stretch. 2. The shock-absorbing structure of the air tool according to claim 1, wherein the first shock-absorbing member is formed by injection molding of plastic. 3. The shock absorbing structure of the pneumatic tool according to claim 1, wherein the control cylinder is integrated with the first shock absorbing member. 4 . The damping structure of the pneumatic tool according to claim 1 , wherein the material of the first damping member is one of the group consisting of plastic, rubber, foam and urethane. 5 . The shock absorbing structure of the air tool according to claim 1 , wherein the telescopic body of the first shock absorbing member is formed by arranging deformation holes. 6 . 6 . The damping structure of the pneumatic tool according to claim 5 , wherein the outer peripheral arrangement of the deformation holes is one of the group consisting of radial direction, oblique direction, helical direction and axial direction. 7 . 7. According to the shock absorbing structure of the pneumatic tool according to claim 5, it is characterized in that: the deformation hole of the shock absorbing member is a long hole, a triangle, a trapezoid, a rhombus, a circle, an ellipse, an S shape and an arc. One of the groups formed. 8 . The shock absorbing structure of the pneumatic tool according to claim 5 , wherein the deformation hole of the shock absorbing element is filled with a buffer material. 9. The shock absorbing structure of an air tool according to claim 1, wherein the radial section of the telescopic body is continuously curved. 10. The shock absorbing structure of an air tool according to claim 1, which has a second shock absorber connected to the other end of the control cylinder opposite to the first shock absorber.

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