Multi-angle pneumatic elbow screwdriver

Abstract

The utility model discloses a multi-angle pneumatic elbow screwdriver. According to the technical scheme, the pneumatic motor and the reversing valve are arranged in the shell, the air pipe connector is arranged at the tail of the shell, a pressing handle for pressing the reversing valve and a reversing knob for rotating the reversing valve are arranged on the shell, and a rotatable plate shaft is arranged on an output shaft of the pneumatic motor. A beating mechanism is arranged on the plate shaft, the front end of the shell is connected with a right-angle gear seat through a double-end thread sleeve and a locking nut, a positioning hole is formed in the front end of the double-end thread sleeve, and at least two positioning openings are formed in the rear end of the right-angle gear seat. A positioning pin is arranged between the positioning hole and the positioning opening to position the right-angle gear seat on the double-end thread sleeve, a large bevel gear and a small bevel gear which are meshed with each other are arranged in the right-angle gear seat, and the rear end of the small bevel gear is connected with the plate shaft.

Description

Technical Field

[0001] The utility model belongs to the field of pneumatics, and in particular relates to a pneumatic elbow screwdriver. Background Art

[0002] A pneumatic screwdriver is a pneumatic tool that uses compressed air as a power source, and is mainly used to tighten and loosen screws and nuts. The structure includes: a housing, a pneumatic motor and a reversing valve arranged in the housing, and an air pipe joint arranged at the rear of the housing. The housing is provided with a pressure handle for pressing the reversing valve and a reversing knob for rotating the reversing valve. The output shaft of the pneumatic motor is provided with a rotatable plate shaft, and the plate shaft is provided with a hammering mechanism. The head of some screwdrivers outputs at 90 degrees, and the conversion is achieved by setting a right-angle gear seat at the front end of the housing and through two gears in the right-angle gear seat. However, there are still disadvantages: the installation angle between the right-angle gear seat and the housing cannot be adjusted, and the use is not flexible enough. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a multi-angle pneumatic elbow screwdriver.

[0004] To solve the above problems, the technical solution adopted by the utility model includes: a shell, an air motor and a reversing valve arranged in the shell, and an air pipe joint arranged at the tail of the shell, the shell is provided with a pressure handle for pressing the reversing valve and a reversing knob for rotating the reversing valve, the output shaft of the air motor is provided with a rotatable plate shaft, and the plate shaft is provided with a hammering mechanism, characterized in that: the front end of the shell is connected to a right-angle gear seat through a double-headed screw sleeve and a locking nut, the front end of the double-headed screw sleeve is provided with a positioning hole, the rear end of the right-angled gear seat is provided with at least two positioning ports, the right-angled gear seat is positioned on the double-headed screw sleeve by arranging a positioning pin between the positioning hole and the positioning port, a large bevel gear and a small bevel gear that mesh with each other are provided in the right-angled gear seat, and the rear end of the small bevel gear is connected to the plate shaft.

[0005] The multi-angle pneumatic elbow screwdriver is characterized in that the rear end of the right-angle gear seat is inserted into the double-headed screw sleeve, and a clamping ring is provided near the double-headed screw sleeve.

[0006] The multi-angle pneumatic elbow screwdriver is characterized in that: the small umbrella-shaped gear outer shell is provided with a gear sleeve, and the right-angle gear seat is provided with an open retaining ring for positioning the gear sleeve.

[0007] The multi-angle pneumatic elbow screwdriver is characterized in that a screwdriver mounting seat extending out of the right-angle gear seat is integrally formed on the large bevel gear, a screwdriver mounting groove is provided in the center of the screwdriver mounting seat, and a positioning steel ball and an open spring sleeve are provided on the side.

[0008] The multi-angle pneumatic elbow screwdriver is characterized in that the hammering mechanism includes a bracket, an impact block axially connected to the bracket, and a transmission sleeve arranged at the end of the bracket, one end of the transmission sleeve is connected to the output shaft of the pneumatic motor, and the other end is connected to the impact block.

[0009] The multi-angle pneumatic elbow screwdriver is characterized in that a regulating valve is provided in front of the shell corresponding to the air pipe joint, the regulating valve includes a regulating rod and a regulating knob, and the regulating rod is provided with an regulating air hole.

[0010] The multi-angle pneumatic elbow screwdriver is characterized in that a positioning screw for positioning the regulating valve is provided on the housing.

[0011] The multi-angle pneumatic elbow screwdriver is characterized in that a steel ball positioning groove is provided on the open spring sleeve.

[0012] The multi-angle pneumatic elbow screwdriver of the utility model has the following beneficial effects: the right-angle gear seat is connected to the shell body through the double-headed screw sleeve and the locking nut, and a positioning hole is set at the front end of the double-headed screw sleeve, and a plurality of positioning ports are set at the rear end of the right-angled gear seat. The right-angled gear seat is positioned on the double-headed screw sleeve by setting positioning pins between different positioning ports and the positioning holes, so as to realize the adjustable installation angle of the right-angled gear seat (the installation angle relative to the pressure handle), thereby making the product adaptable to different occasions.

[0013] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of the utility model multi-angle pneumatic elbow screwdriver;

[0015] Figure 2 It is an exploded view of the utility model multi-angle pneumatic elbow screwdriver;

[0016] Figure 3 It is a structural schematic diagram of the double-ended screw sleeve of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the right-angle gear seat of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the hammering mechanism of the utility model;

[0019] Figure 6 It is an exploded view of the hammering mechanism of the utility model;

[0020] Figure 7 It is a structural schematic diagram of the regulating valve of the utility model;

[0021] Figure 8 It is a structural schematic diagram of an open spring sleeve of the utility model. DETAILED DESCRIPTION

[0022] like Figures 1 to 8 As shown, the multi-angle pneumatic elbow screwdriver of the utility model comprises a housing 1, an air motor 2 and a reversing valve 3 arranged in the housing 1, and an air pipe joint 4 arranged at the tail of the housing 1. The housing 1 is provided with a pressure handle 5 for pressing the reversing valve 3 and a reversing knob 6 for rotating the reversing valve 3. By reversing the reversing valve 3, the air flow direction is changed to achieve the forward or reverse rotation of the air motor 2, thereby achieving tightening and loosening of the screws. A rotatable plate shaft 33 is provided on the output shaft 26 of the air motor 2. A hammering mechanism 7 is provided on the plate shaft 33. The front end of the housing 1 is connected to a right-angle gear seat 10 through a stud screw sleeve 8 and a locking nut 9, one end of the stud screw sleeve is connected to the housing 1, and the other end is connected to the locking nut 9. The front end of the stud screw sleeve 8 is provided with a positioning hole 11, and the rear end of the right angle gear seat 10 is provided with two or more positioning holes 12. The right angle gear seat 10 is positioned on the stud screw sleeve 8 by arranging a positioning pin 13 between the positioning hole 11 and the positioning hole 12. The right angle gear seat 10 is provided with a large bevel gear 14 and a small bevel gear 15 that mesh with each other, and the rear end of the small bevel gear 15 is connected to the plate shaft 33. The small bevel gear 15 drives the large bevel gear 14 to increase the torque.

[0023] Preferably, the rear end of the right angle gear seat 10 is inserted into the stud screw sleeve 8, and a snap ring 16 is provided near the stud screw sleeve 8. When the locking nut 9 is tightened, the right angle gear seat 10 is positioned by cooperating with the snap ring 16 to improve the stability of the connection of the right angle gear seat 10.

[0024] Preferably, the small bevel gear 15 is covered with a gear sleeve 17, and the right-angle gear seat 10 is provided with an open retaining ring 18 for positioning the gear sleeve 17, so as to improve the wear resistance and smoothness of rotation of the small bevel gear 15.

[0025] Preferably, a screwdriver mounting seat 19 extending out of the right-angle gear seat 10 is integrally formed on the large bevel gear 14, a screwdriver mounting slot 20 is provided at the center of the screwdriver mounting seat 19, and a positioning steel ball 21 and an open spring sleeve 22 are provided on the side of the screwdriver mounting seat 19. When the rear end of the screwdriver is inserted into the screwdriver mounting slot 20, the positioning steel ball 21 is inserted into the groove at the rear end of the screwdriver to fix the screwdriver.

[0026] Preferably, the hammering mechanism 7 comprises a bracket 23, an impact block 24 which can be arranged on the bracket 23 through a connecting shaft 34, and a transmission sleeve 25 arranged at the end of the bracket 23, wherein one end of the transmission sleeve 25 is connected to the output shaft 26 of the pneumatic motor 2, and the other end of the transmission sleeve 25 is connected to the impact block 24. The rotation of the output shaft 26 drives the impact block 24 to rotate through the transmission sleeve 25, and the impact block 24 is rotated to hit the protrusion of the plate shaft 33, thereby increasing the output torque. The hammering mechanism 7 of the above structure has the advantages of simple structure and good stability.

[0027] Preferably, the housing 1 is provided with a regulating valve 27 in front of the air pipe joint 4, and the regulating valve 27 includes a regulating rod 28 and a regulating knob 29, and the regulating rod 28 is provided with a regulating air hole 30. The opening of the regulating air hole 30 is changed by rotating the regulating valve 27 to adjust the air flow size, thereby adjusting the output torque of the screwdriver.

[0028] Preferably, the housing 1 is provided with a positioning screw 31 for positioning the regulating valve 27 to prevent the regulating valve 27 from loosening due to the high-pressure airflow.

[0029] Preferably, a steel ball positioning groove 32 is provided on the open spring sleeve 22 to play a positioning role for the positioning steel ball 21.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. A multi-angle pneumatic elbow screwdriver, comprising a housing (1), an air motor (2) and a reversing valve (3) arranged in the housing (1), and an air pipe joint (4) arranged at the rear of the housing (1), the housing (1) being provided with a pressing handle (5) for pressing the reversing valve (3) and a reversing knob (6) for rotating the reversing valve (3), the output shaft (26) of the air motor (2) being provided with a rotatable plate shaft (33), the plate shaft (33) being provided with a hammering mechanism (7), characterized in that: The front end of the housing (1) is connected to a right-angle gear seat (10) via a stud screw sleeve (8) and a locking nut (9); a positioning hole (11) is provided at the front end of the stud screw sleeve (8); at least two positioning openings (12) are provided at the rear end of the right-angle gear seat (10); a positioning pin (13) is provided between the positioning hole (11) and the positioning opening (12) to position the right-angle gear seat (10) on the stud screw sleeve (8); a large bevel gear (14) and a small bevel gear (15) that mesh with each other are provided in the right-angle gear seat (10); and a rear end of the small bevel gear (15) is connected to the plate shaft (33).

2. The multi-angle pneumatic elbow screwdriver according to claim 1, characterized in that: The rear end of the right-angle gear seat (10) is inserted into the stud screw sleeve (8), and a snap ring (16) is provided near the stud screw sleeve (8).

3. The multi-angle pneumatic elbow screwdriver according to claim 1, characterized in that: The small bevel gear (15) is provided with a gear sleeve (17) on its outer shell, and the right-angle gear seat (10) is provided with an open retaining ring (18) for positioning the gear sleeve (17).

4. The multi-angle pneumatic elbow screwdriver according to claim 1, characterized in that: The large bevel gear (14) is integrally formed with a screwdriver mounting seat (19) extending out of the right-angle gear seat (10); a screwdriver mounting groove (20) is provided at the center of the screwdriver mounting seat (19), and a positioning steel ball (21) and an open spring sleeve (22) are provided on the side.

5. The multi-angle pneumatic elbow screwdriver according to claim 1, characterized in that: The hammering mechanism (7) comprises a bracket (23), an impact block (24) axially connected to the bracket (23), and a transmission sleeve (25) arranged at the end of the bracket (23); one end of the transmission sleeve (25) is connected to the output shaft (26) of the pneumatic motor (2), and the other end is connected to the impact block (24).

6. The multi-angle pneumatic elbow screwdriver according to claim 1, characterized in that: The housing (1) is provided with a regulating valve (27) in front of the air pipe joint (4), the regulating valve (27) comprising a regulating rod (28) and a regulating knob (29), and the regulating rod (28) is provided with a regulating air hole (30).

7. The multi-angle pneumatic elbow screwdriver according to claim 6, characterized in that: The housing (1) is provided with a positioning screw (31) for positioning the regulating valve (27).

8. The multi-angle pneumatic elbow screwdriver according to claim 4, characterized in that: The open spring sleeve (22) is provided with a steel ball positioning groove (32).

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