Energy-saving pneumatic wrench

Abstract

The utility model provides an energy-saving pneumatic wrench, and belongs to the technical field of pneumatic wrenches. The pneumatic wrench solves the problem that in the prior art, air circulation in the pneumatic wrench is blocked, and consequently efficiency is reduced. The energy-saving impact wrench comprises a wrench shell, an air cylinder assembly, an energy-saving assembly and an impact assembly, the two sides of the upper end of the wrench shell are fixedly connected with a front cover body and a rear cover body respectively, the wrench shell forms an upper body and a lower handle structure, and an upper mounting cavity and a lower mounting cavity are formed in the upper body; the air cylinder assembly and the energy-saving assembly are installed in the upper installation cavity and the lower installation cavity respectively, an exhaust channel and an air inlet channel are formed in the lower handle, an interval groove is formed in the bottom of the upper installation cavity, a first air inlet hole is formed in the bottom of the interval groove, and the first air inlet hole communicates with the lower installation cavity. A second air inlet and an exhaust hole are formed in the bottom of the lower mounting cavity, the second air inlet is communicated with the air inlet channel, and the exhaust hole is communicated with the exhaust channel. The utility model has the advantage of good energy-saving effect.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pneumatic wrench technical field relates to a kind of energy-saving pneumatic wrench. BACKGROUND

[0002] Pneumatic wrench, also known as pneumatic impact wrench or pneumatic torque wrench, is a kind of tool driven by compressed air, mainly used for providing high torque output, part of pneumatic wrench on the market internal airflow channel design is not enough optimization, gas leakage hidden trouble or flow resistance is larger, make compressed air not be used fully to drive working parts, additional energy is wasted non-work link.

[0003] The utility model discloses a kind of muffling pneumatic wrenchs, including shell, drive system, speed reducer system and output shaft are arranged in shell, shell further includes a handle part, handle part is provided with switch assembly, exhaust passage and intake passage are arranged in handle part, muffling structure is arranged in exhaust passage, muffling structure includes a cylindrical support framework, support framework is reticulated, muffling cotton layer is sleeved on support framework, muffling cotton layer extends the end face of support framework close to switch assembly, extending portion is closed, the other end of muffling cotton layer is open, the end portion close to the bottom of handle part in support framework interior is provided with block muffling cotton, the bottom of handle part is provided with detachable end cap, exhaust port is set out on end cap with block muffling cotton.

[0004] The utility model provides a kind of muffling pneumatic wrenchs in the increased muffling mechanism, the setting of muffling mechanism makes gas flow in pneumatic wrench interior obstructed, lead to efficiency reduction. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above-mentioned problems existing in prior art, provide a kind of energy-saving pneumatic wrench.

[0006] The utility model discloses a purpose can be realized through the following technical schemes: a kind of energy-saving pneumatic wrench, including wrench shell, cylinder assembly, energy-saving component and strike component, the wrench shell upper end both sides are respectively fixedly connected with front cover body and rear cover body, the wrench shell is formed into upper body and lower handle structure, the upper body is formed with upper installation cavity and lower installation cavity, the cylinder assembly and energy-saving component are respectively installed in upper installation cavity and lower installation cavity interior, the lower handle inner portion is respectively provided with exhaust passage and air inlet passage, the upper installation cavity bottom is formed with interval groove, the interval groove bottom is provided with first air inlet hole, the first air inlet hole is communicated with lower installation cavity, the lower installation cavity bottom is provided with second air inlet hole and exhaust hole, the second air inlet hole is communicated with air inlet passage, the exhaust hole is communicated with exhaust passage, the cylinder assembly includes cylinder shell, cylinder shaft, cylinder front cover and cylinder rear cover, the cylinder shell bottom end is provided with a plurality of cylinder air inlet holes, the energy-saving component includes energy-saving core and energy-saving sleeve, the energy-saving sleeve is sleeved on the outside of energy-saving core, the rear cover body is provided with connecting hole, the energy-saving core is arranged through the connecting hole, the rear cover body outside is provided with gear knob, and the gear knob is connected with energy-saving core.

[0007] In the above-mentioned energy-saving pneumatic wrench, a large hole is formed in the lower side of the energy-saving sleeve, the large hole is communicated with the second air inlet hole, and a plurality of small holes are formed in the two side surfaces and the lower end of the energy-saving sleeve.

[0008] In the above-mentioned energy-saving pneumatic wrench, the strike component is installed in the interior of the front cover body, and the cylinder shaft is connected with the strike component.

[0009] In the above-mentioned energy-saving pneumatic wrench, the cylinder shaft is arranged through the cylinder front cover, the cylinder shell and the cylinder rear cover in sequence, and a gap is left between the cylinder shell and the cylinder shaft, i.e., a gap is left between the cylinder air inlet hole and the cylinder shaft.

[0010] In the above-mentioned energy-saving pneumatic wrench, an exhaust cover is fixedly connected to the lower end of the lower handle, one end of the exhaust cover is communicated with the exhaust passage, and the other end is provided with a through hole, an air inlet connector is fixedly connected in the through hole, an air inlet spring is connected to the upper end of the air inlet connector, an air inlet valve is connected to the upper end of the air inlet spring, and the air inlet valve is connected with the second air inlet hole.

[0011] Compared with the prior art, the energy-saving pneumatic wrench has the following beneficial effects: 1. The upper and lower mounting cavities and the air inlet and exhaust passages of the wrench shell are reasonably arranged, the communication design of the interval groove and the first and second air inlets ensures smooth gas flow, reduces the risk of leakage and reduces energy loss in non-working links; 2. The air cylinder inlet and the air cylinder shaft have a gap, which reduces airflow resistance and allows the gas to flow more smoothly into the air cylinder assembly, optimizes the air inlet path, increases the air inlet amount per unit time, and thus improves the tool working efficiency; 3. The energy-saving core is driven by the gear shifting knob, and the large hole and the small hole of the energy-saving sleeve can accurately adjust the air inlet amount according to the working requirements, avoid excessive consumption of compressed air, realize on-demand air supply, reduce energy waste and improve energy-saving effect. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is the schematic diagram of the explosion structure of the utility model;

[0013] Figure 2 is the schematic diagram of the cross-section structure of the utility model;

[0014] Figure 3 is the schematic diagram of the wrench shell structure;

[0015] Figure 4 is the schematic diagram of the air cylinder assembly structure;

[0016] Figure 5 is the schematic diagram of the energy-saving assembly structure.

[0017] In the figure: 1, wrench shell; 11, upper body; 111, upper mounting cavity; 112, interval groove; 113, first air inlet; 114, lower mounting cavity; 12, lower handle; 121, exhaust passage; 122, air inlet passage; 123, second air inlet; 124, exhaust hole; 13, exhaust cover; 14, air inlet connector; 15, air inlet spring; 16, air inlet valve; 2, air cylinder assembly; 21, air cylinder shell; 22, air cylinder shaft; 23, air cylinder front cover; 24, air cylinder rear cover; 25, air cylinder air inlet; 3, energy-saving assembly; 31, energy-saving core; 32, energy-saving sleeve; 33, large hole; 34, small hole; 4, striking assembly; 5, front cover body; 6, rear cover body; 61, connecting hole; 7, gear shifting knob. DETAILED DESCRIPTION

[0018] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0019] As Figures 1 to 5As shown, the embodiment includes a wrench housing 1, a cylinder assembly 2, an energy-saving assembly 3 and a striking assembly 4, the wrench housing 1 is fixedly connected with a front cover body 5 and a rear cover body 6 on both sides of the upper end, the wrench housing 1 is formed as an upper body 11 and a lower handle 12 structure, the upper body 11 is formed with an upper mounting cavity 111 and a lower mounting cavity 114, the cylinder assembly 2 and the energy-saving assembly 3 are respectively installed in the upper mounting cavity 111 and the lower mounting cavity 114, the lower handle 12 is respectively provided with an exhaust passage 121 and an air inlet passage 122, the bottom of the upper mounting cavity 111 is formed with a spacing groove 112, the bottom of the spacing groove 112 is provided with a first air inlet hole 113, the first air inlet hole 113 is communicated with the lower mounting cavity 114, the spacing groove 112 ensures the smooth flow of gas between the upper mounting cavity 111 and the lower mounting cavity 114, reduces the risk of leakage and reduces energy loss, the bottom of the lower mounting cavity 114 is provided with a second air inlet hole 123 and an exhaust hole 124, the second air inlet hole 123 is communicated with the air inlet passage 122, and the exhaust hole 124 is communicated with the exhaust passage 121, which ensures the smooth path of air inlet and exhaust.

[0020] As shown, Figures 1 to 5 The cylinder assembly 2 includes a cylinder housing 21, a cylinder shaft 22, a cylinder front cover 23 and a cylinder rear cover 24, the bottom end of the cylinder housing 21 is provided with a plurality of cylinder air inlet holes 25, the cylinder shaft 22 is sequentially provided through the cylinder front cover 23, the cylinder housing 21 and the cylinder rear cover 24, and there is a gap between the cylinder housing 21 and the cylinder shaft 22, that is, there is a gap between the cylinder air inlet hole 25 and the cylinder shaft 22, this structure reduces the obstruction of airflow into the cylinder assembly 2, makes the gas more smoothly into the cylinder assembly 2, optimizes the air inlet path, improves the air inlet amount per unit time, and further improves the tool working efficiency.

[0021] As shown, Figures 1 to 5As shown, the energy-saving assembly 3 comprises an energy-saving core 31 and an energy-saving sleeve 32, the energy-saving sleeve 32 is sleeved outside the energy-saving core 31, a connecting hole 61 is arranged in the rear cover body 6, the energy-saving core 31 penetrates through the connecting hole 61, an adjusting knob 7 is arranged outside the rear cover body 6, the adjusting knob 7 is connected with the energy-saving core 31, a large hole 33 is arranged in the lower side of the energy-saving sleeve 32, the large hole 33 is communicated with the second air inlet hole 123, a plurality of small holes 34 are arranged in the two side surfaces and the lower end of the energy-saving sleeve 32, the energy-saving core 31 is driven by the adjusting knob 7, the communication between the large hole 33 and the small hole 34 of the energy-saving sleeve 32 and the second air inlet hole 123 can be accurately adjusted, so that the air inlet amount can be accurately adjusted according to the working requirement, the excessive consumption of compressed air is avoided, the air supply is realized according to the requirement, the energy waste is reduced, and the energy-saving effect is improved.

[0022] Further details, such as Figures 1 to 5 As shown, the striking assembly 4 is installed in the inside of the front cover body 5, the cylinder shaft 22 is connected with the striking assembly 4, so that the cylinder shaft 22 can effectively transmit power to the striking assembly 4, and the striking function of the embodiment is realized.

[0023] Further details, such as Figures 1 to 2 As shown, the lower handle 12 is fixedly connected with an exhaust cover 13 at the lower end, one end of the exhaust cover 13 is communicated with the exhaust passage 121 and the other end is provided with a through hole, the air inlet connector 14 is fixedly connected in the through hole, the air inlet spring 15 is connected with the air inlet connector 14 at the upper end, the air inlet valve 16 is connected with the air inlet spring 15 at the upper end, and the air inlet valve 16 is connected with the second air inlet hole 123, which ensures the smoothness and stability of the air inlet, and ensures the normal work of the exhaust passage 121.

[0024] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, without departing from the spirit of the present application or exceeding the scope defined by the appended claims.

[0025] Although various terms are used herein, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application; any interpretation of them as additional limitations is contrary to the spirit of the present application. Although various terms are used herein, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application; any interpretation of them as additional limitations is contrary to the spirit of the present application.

Claims

1. An energy-saving pneumatic wrench, comprising a wrench housing (1), a cylinder assembly (2), an energy-saving component (3), and a striking component (4), wherein a front cover (5) and a rear cover (6) are fixedly connected to the upper two sides of the wrench housing (1), and the wrench housing (1) is formed as an upper body (11) and a lower handle (12) structure, characterized in that: The upper main body (11) forms an upper mounting cavity (111) and a lower mounting cavity (114). The cylinder assembly (2) and the energy-saving assembly (3) are respectively installed inside the upper mounting cavity (111) and the lower mounting cavity (114). The lower handle (12) is provided with an exhaust channel (121) and an intake channel (122). The bottom of the upper mounting cavity (111) has a partition groove (112). The bottom of the partition groove (112) has a first intake hole (113) connected to the lower mounting cavity (114). The bottom of the lower mounting cavity (114) has a second intake hole (123) and an exhaust hole (124). The second intake hole (123) is connected to the lower mounting cavity (114). The bottom of the lower mounting cavity (114) has a second intake hole (123) and an exhaust hole (124). The intake passage (122) is connected, and the exhaust port (124) is connected to the exhaust passage (121). The cylinder assembly (2) includes a cylinder housing (21), a cylinder shaft (22), a cylinder front cover (23), and a cylinder rear cover (24). The bottom end of the cylinder housing (21) is provided with several cylinder intake ports (25). The energy-saving component (3) includes an energy-saving core (31) and an energy-saving sleeve (32). The energy-saving sleeve (32) is fitted on the outside of the energy-saving core (31). A connecting hole (61) is provided in the rear cover (6). The energy-saving core (31) passes through the connecting hole (61). A gear shift knob (7) is provided on the outside of the rear cover (6). The gear shift knob (7) is connected to the energy-saving core (31).

2. The energy-saving pneumatic wrench according to claim 1, characterized in that: The energy-saving sleeve (32) has a large through hole (33) on its lower side, which is connected to the second air inlet (123). The energy-saving sleeve (32) has several small through holes (34) on its two sides and lower end.

3. The energy-saving pneumatic wrench according to claim 1, characterized in that: The striking assembly (4) is installed inside the front cover (5), and the cylinder shaft (22) is connected to the striking assembly (4).

4. The energy-saving pneumatic wrench according to claim 1, characterized in that: The cylinder shaft (22) passes through the cylinder front cover (23), cylinder housing (21) and cylinder rear cover (24) in sequence. There is a gap between the cylinder housing (21) and the cylinder shaft (22), that is, there is a gap between the cylinder air inlet (25) and the cylinder shaft (22).

5. An energy-saving pneumatic wrench according to claim 1, characterized in that: The lower end of the lower handle (12) is fixedly connected to an exhaust cover (13). One end of the exhaust cover (13) is connected to the exhaust channel (121) and the other end is provided with a through hole. An air inlet connector (14) is fixedly connected in the through hole. An air inlet spring (15) is connected to the upper end of the air inlet connector (14). An air inlet valve (16) is connected to the upper end of the air inlet spring (15). The air inlet valve (16) is connected to the second air inlet (123).

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