Small pneumatic impact wrench

Abstract

The utility model provides a small pneumatic impact wrench, and belongs to pneumatic impact wrenches. According to the technical scheme, the gun comprises a gun body, a locking ring is installed at the output end of the gun body, a positioning shaft sleeve is connected to the position, close to the front side, of the middle of the inner side wall of the locking ring in a threaded mode, a plurality of positioning grooves distributed in a polar axis mode are formed in the position, close to the right side, of the outer side wall of the positioning shaft sleeve, and the output end of the locking ring is connected with an output shaft. According to the utility model, the output end of the gun body drives the locking ring to rotate so as to act on the output shaft, the positioning shaft sleeve and the threaded sleeve to synchronously rotate, and each clamping piece and each buckling groove are firmly locked under the assistance of a plurality of groups of positioning springs, so that the output shaft is prevented from violently shaking in the use process; and a large amount of vibration force is rebounded to the gun body, so that the use stability of a user is improved.

Description

Technical Field

[0001] The utility model relates to the field of pneumatic wrenches, in particular to a small pneumatic wrench. Background Art

[0002] A pneumatic trigger is a type of pneumatic trigger in which the impact hammer (fly hammer) in the impactor can rotate multiple times to impact once. It is used to disassemble and install screws and nuts and is now widely used.

[0003] However, when the existing small-sized pneumatic wrench is in use, the trigger is used as a starter to act on the output end of the gun body, thereby driving the output shaft and the threaded sleeve at the output end of the output shaft to rotate, so as to perform disassembly operations on the bolts and the like that need to be disassembled. However, in the existing equipment, the connection between the output shaft and the gun body is unstable, resulting in a large shaking force of the output shaft during operation, which makes the operator affected by the vibration force and is inconvenient to accurately control the use of the pneumatic wrench. Therefore, a small-sized pneumatic wrench is proposed to solve the above-mentioned problems. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a small air wrench, which is achieved through the following technical solutions: it includes a gun body, a locking ring is installed at the output end of the gun body, a positioning sleeve is threadedly connected to the middle front position of the inner side wall of the locking ring, a plurality of positioning grooves distributed in a polar axis are opened on the right side of the outer wall of the positioning sleeve, an output shaft is connected to the output end of the locking ring, the outer wall of the output shaft is rotatably connected to the middle position of the inner side wall of the locking ring and the positioning sleeve on the right side, a positioning ring is installed on the middle right side of the outer wall of the output shaft and on the inside of the plurality of positioning grooves, a plurality of snap grooves distributed in a polar axis are installed on the outer wall of the positioning ring on the right side, and a plurality of locking mechanisms distributed in a polar axis are installed in the middle of the outer wall of the locking ring.

[0005] Furthermore, the locking ring is driven to rotate through the output end of the gun body, thereby acting on the output shaft, the positioning sleeve, and the threaded sleeve to rotate synchronously. Each clip and each buckle groove are firmly locked with the assistance of several groups of positioning springs, thereby avoiding strong shaking of the output shaft during use and causing a large amount of vibration force to rebound on the gun body, thereby improving the stability of the user when using it.

[0006] Furthermore, a plurality of snap grooves are respectively arranged at outer sides of the corresponding positioning grooves.

[0007] Furthermore, a plurality of groups of positioning springs are used to position and reset the corresponding positioning members, thereby preventing the output shaft from vibrating violently during use and causing a large amount of vibration force to rebound on the gun body, thereby improving the stability of the user during use.

[0008] Furthermore, the clamping piece is used to clamp with the buckle groove and lock the output shaft through the positioning ring.

[0009] Furthermore, each clip member and each clip groove are firmly locked with the assistance of several groups of positioning springs.

[0010] Furthermore, the threaded sleeve may be any type that matches the output shaft, and the threaded opening may be bolts, hexagonal nuts, etc. of different types.

[0011] Furthermore, the hand holds the handle during use.

[0012] Furthermore, by pressing the trigger to the right, the output end of the gun body drives the output shaft to rotate.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model: the locking ring is driven to rotate by the output end of the gun body, thereby acting on the output shaft, the positioning sleeve, and the threaded sleeve to rotate synchronously. Each clamping part and each buckle groove are firmly locked with the assistance of several groups of positioning springs, thereby avoiding strong shaking of the output shaft during use, and rebounding a large amount of vibration force on the gun body, so as to improve the stability of the user when using it.

[0015] 2. In the utility model: the threaded groove on the left side wall of the output shaft is used for threaded connection with various threaded sleeves of matching models, so as to adapt to the disassembly and installation of locking mechanisms such as bolts and hexagonal nuts of different models, thereby improving the practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of a small air trigger of the utility model;

[0017] Figure 2 It is a three-dimensional schematic diagram of the connection between the output shaft and the positioning ring;

[0018] Figure 3 is a three-dimensional schematic diagram of a positioning spring;

[0019] Figure 4 for Figure 1 A magnified schematic diagram of center A.

[0020] Legend:

[0021] 1. Gun body; 2. Handle; 3. Trigger; 4. Positioning groove; 5. Locking ring; 6. Positioning sleeve; 7. Output shaft; 8. Positioning spring; 9. Threaded sleeve; 10. Threaded mouth; 11. Connector; 12. Positioning piece; 13. Mounting block; 14. Positioning ring; 15. Buckle groove; 16. Input end. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-4 The utility model provides an embodiment: a small air wrench, including a gun body 1, a locking ring 5 is installed at the output end of the gun body 1, a positioning sleeve 6 is connected to the thread in the middle of the inner wall of the locking ring 5 near the front side, and a plurality of positioning grooves 4 distributed in polar axes are opened on the right side of the outer wall of the positioning sleeve 6, an output shaft 7 is connected to the output end of the locking ring 5, and the outer wall of the output shaft 7 is rotatably connected to the middle position of the inner wall of the locking ring 5 and the positioning sleeve 6 near the right side, and a positioning ring 14 is installed on the inner side of the plurality of positioning grooves 4 near the middle of the outer wall of the output shaft 7 near the right side. A plurality of snap grooves 15 distributed in a polar axis are installed on the right side of the outer wall of the positioning ring 14, and a plurality of locking mechanisms distributed in a polar axis are installed in the middle of the outer wall of the locking ring 5. The locking ring is driven to rotate through the output end of the gun body 1, thereby acting on the output shaft 7, the positioning sleeve 14, and the threaded sleeve 9 to rotate synchronously. Each snap-fit ​​part 11 and each snap groove 15 are firmly locked with the assistance of several groups of positioning springs 8, thereby avoiding strong shaking of the output shaft 7 during use, and rebounding a large amount of vibration force on the gun body 1, so as to improve the stability of the user when using it.

[0024] A number of locking mechanisms are matched with a number of snap grooves 15 and the positioning grooves 4. A number of snap grooves 15 are respectively arranged at the outer positions of the corresponding positioning grooves 4. A number of locking mechanisms include two mounting blocks 13. Every two mounting blocks 13 are rotatably connected to the positioning piece 12. A positioning spring 8 is installed at the bottom position in the middle of the front side wall and the bottom position in the middle of the rear side wall of each positioning piece 12. The other side of each group of positioning springs 8 is respectively installed at the bottom position in the middle of the front side wall and the bottom position in the middle of the rear side wall of each mounting block 13. The corresponding positioning pieces 12 are positioned and reset through a number of groups of positioning springs 8, thereby avoiding strong shaking of the output shaft 7 during use and rebounding a large amount of vibration force on the gun body 1 to improve the stability of the user when using it.

[0025] A clamping piece 11 is installed at the top middle position of the left side wall of each positioning piece 12. The clamping piece 11 is used to clamp with the clamping groove 15 and lock the output shaft 7 through the positioning ring 14. Several clamping pieces 11 are matched and clamped with several corresponding clamping grooves 15 respectively. Each clamping piece 11 is firmly locked with each clamping groove 15 with the assistance of several groups of positioning springs 8. A threaded sleeve 9 is installed in the middle position of the left side wall of the output shaft 7. A threaded opening 10 is opened in the middle position of the left side wall of the threaded sleeve 9. The threaded sleeve 9 can be any model that matches the output shaft 7, and the threaded opening can be bolts, hexagonal nuts, etc. of different models.

[0026] A handle 2 is installed at the middle position of the bottom of the gun body 1. When in use, the hand holds the handle 2. A trigger 3 is installed at the input end of the handle 2. The output end of the trigger 3 is connected to the input end of the gun body 1. By pressing the trigger 3 to the right, the output end of the gun body 1 drives the output shaft 7 to rotate.

[0027] Working principle: Through the action of several groups of positioning springs 8, the clamping parts 11 installed at the top position in the middle of the left side wall of several positioning parts 12 are respectively penetrated into the corresponding positioning grooves 4, and are respectively clamped with several buckle grooves 15, so as to strengthen the locking requirement of the output shaft 7. When the trigger 3 is pressed to the right, the electric locking ring 5 at the output end of the gun body 1 rotates, thereby acting on the output shaft 7, the positioning sleeve 6, and the threaded sleeve 9 to rotate synchronously. Each clamping part 11 and each buckle groove 15 are firmly locked with the assistance of several groups of positioning springs 8, so as to avoid strong shaking of the output shaft 7 during use, and rebound a large amount of vibration force on the gun body 1, so as to improve the stability of the user when using it, and the threaded groove opened on the left side wall of the output shaft 7 is used for threaded connection of various threaded sleeves 9 of matching models, so as to adapt to the disassembly and installation of locking mechanisms such as bolts and hexagonal nuts of different models, and improve the practicality of the equipment.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A small air wrench, comprising a gun body (1), characterized in that: The output end of the gun body (1) is provided with a locking ring (5), a positioning sleeve (6) is threadedly connected in the middle of the inner wall of the locking ring (5) at the front side, a plurality of positioning grooves (4) distributed in a polar axis are provided in the outer wall of the positioning sleeve (6) at the right side, an output shaft (7) is connected to the output end of the locking ring (5), the outer wall of the output shaft (7) is rotatably connected to the middle of the inner wall of the locking ring (5) and the positioning sleeve (6) at the right side, a positioning ring (14) is installed in the middle of the outer wall of the output shaft (7) at the right side and inside the plurality of positioning grooves (4), a plurality of buckle grooves (15) distributed in a polar axis are installed in the outer wall of the positioning ring (14) at the right side, and a plurality of locking mechanisms distributed in a polar axis are installed in the middle of the outer wall of the locking ring (5).

2. A small air wrench according to claim 1, characterized in that: The plurality of locking mechanisms are matched with the plurality of buckle slots (15) and the positioning slots (4).

3. A small air wrench according to claim 1, characterized in that: The locking mechanisms each include two mounting blocks (13), each of the two mounting blocks (13) being rotatably connected to a positioning member (12), a positioning spring (8) being installed at a middle bottom position of a front side wall and a middle bottom position of a rear side wall of each positioning member (12), and the other side of each group of positioning springs (8) being installed at a middle bottom position of a front side wall and a middle bottom position of a rear side wall of each mounting block (13).

4. A small air wrench according to claim 3, characterized in that: A clamping piece (11) is installed at the top middle position of the left side wall of each positioning piece (12).

5. A small air wrench according to claim 4, characterized in that: The plurality of clamping members (11) are matched with and clamped to a plurality of corresponding clamping grooves (15) respectively.

6. A small air wrench according to claim 5, characterized in that: A threaded sleeve (9) is installed in the middle of the left side wall of the output shaft (7), and a threaded opening (10) is provided in the middle of the left side wall of the threaded sleeve (9).

7. A small air wrench according to claim 1, characterized in that: A handle (2) is installed at the middle position of the bottom of the gun body (1).

8. A small air wrench according to claim 7, characterized in that: A trigger (3) is installed at the input end of the handle (2), and an output end of the trigger (3) is connected to the input end of the gun body (1).

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