Electric pick with novel head holding, locking and adjusting structure

Abstract

The utility model provides an electric pick with a novel head holding, locking and adjusting structure. The problem that the angle of an existing chisel head is inconvenient to adjust is solved. According to the utility model, the chisel head is inserted into the insertion hole, the steel ball is clamped on the chisel head, the locking piece buckled on the periphery of the through hole is used for pressing the steel ball on the chisel head all the time to complete locking of the chisel head, and during adjustment, the adjusting sleeve is driven to move upwards, and the second spring is used for driving the locking piece to move upwards, so that the locking piece is separated from the through hole; the steel ball moves outwards along the channel and is separated from the chisel head, the chisel head is directly taken down, adjusted to a required angle and inserted again, locking can be completed again by loosening the adjusting sleeve, and adjustment is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of power tools, in particular to a pneumatic pick with a novel head holding, locking and adjusting structure. Background Art

[0002] During the process of grooving with a pneumatic pick, the chisel head is fixed on the pneumatic pick. When the angle of the chisel head needs to be adjusted, the locking device on the pneumatic pick needs to be unscrewed, the chisel head is removed, adjusted to the required angle and reinserted, and then tightened to complete the adjustment and locking. The adjustment is relatively inconvenient. Some pneumatic picks that do not adopt this structure cannot adjust the angle of the chisel head. The plastic front cylinder protective cover can be directly held by hand, enabling precise operation during work. There are areas for improvement in the prior art. Summary of the Invention

[0003] The device of the utility model aims at the above-mentioned existing situation and provides a pneumatic pick with a novel head holding, locking and adjusting structure, which is characterized in that it includes an adjusting sleeve movably sleeved on the outer periphery of a square sleeve. A guiding sleeve extending downward and sleeved on the outer periphery of the end of the square sleeve is fixedly arranged at the front end of the adjusting sleeve. A clamping plate is fixedly arranged at the front end of the square sleeve. A jack for inserting the chisel head is opened at the front end of the square sleeve. A through hole communicating with the outside of the square sleeve is opened on the inner wall of the jack. A steel ball for locking the chisel head is movably arranged in the through hole. A locking member for buckling on the outer periphery of the through hole is movably arranged on the outer periphery of the front end of the square sleeve. A first spring for driving the locking member to move downward is arranged between the clamping plate and the locking member. A second spring for driving the locking member to move upward is arranged between the locking member and the guiding sleeve. A relief groove with a diameter larger than the inner diameter of the locking member is opened at the lower end of the locking member.

[0004] Preferably, a support ring is fixedly arranged in the guiding sleeve, and the second spring is located between the support ring and the locking member.

[0005] Preferably, a locking part is fixedly arranged in the square sleeve. A cylinder extending upward is fixedly arranged in the locking part. The guiding sleeve is movably sleeved on the outer periphery of the cylinder and can move along the length direction of the square sleeve. A plurality of guiding grooves extending in the vertical direction are opened on the outer periphery of the cylinder. A plurality of guiding strips for being clamped in the guiding grooves are opened on the inner wall of the guiding sleeve. The moving distance of the guiding sleeve along the length direction of the square sleeve is greater than the height of the cylinder.

[0006] Preferably, a plurality of first teeth are fixedly arranged at the upper end of the locking part, and a plurality of second teeth for being clamped between adjacent two first teeth are fixedly arranged at the lower end of the guiding sleeve.

[0007] Preferably, the upper end of the adjusting sleeve is fixedly connected with the upper end of the guiding sleeve through a connecting part, and the connecting part is arc-shaped.

[0008] Preferably, a front-tube plastic protective sleeve is provided on the outer periphery of the square sleeve, and the front-tube plastic protective sleeve is fixed on the square sleeve by screws, and the above-mentioned adjustment sleeve abuts against the upper end of the front-tube plastic protective sleeve.

[0009] Compared with the prior art, when the utility model is in use, the chisel head is inserted into the insertion hole, the steel ball is clamped on the chisel head, and the steel ball is always pressed against the chisel head by a locking piece that is buckled on the outer periphery of the through hole to complete the locking of the chisel head. When adjusting, the adjusting sleeve is driven to move upward, and the locking piece is driven upward by the second spring to make the locking piece disengage from the through hole, and the clearance groove is facing the through hole, the steel ball moves outward along the channel and disengages from the chisel head, the chisel head is directly removed and adjusted to the required angle and then reinserted, and the adjusting sleeve is released to complete the locking again, and the adjustment is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model;

[0011] Figure 2 It is a cutaway view of the utility model;

[0012] Figure 3 This is a structural view of the interior of the square set;

[0013] Figure 4 It is a structural view of the adjustment sleeve;

[0014] Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0015] Markings in the figure: 1. Square sleeve; 2. Adjusting sleeve; 3. Guide sleeve; 4. Buckle plate; 5. Socket; 6. Through hole; 7. Steel ball; 8. Locking piece; 9. First spring; 10. Second spring; 11. Give way groove; 12. Support ring; 13. Locking part; 14. Cylinder; 15. Guide groove; 16. Guide strip; 17. First latch tooth; 18. Second latch tooth; 19. Plastic protective cover of front tube; 20. Connecting part. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0017] like Figures 1-5As shown in the figure, a pneumatic pick with a new type of head holding and locking adjustment structure includes an adjustment sleeve 2 movably sleeved on the outer periphery of a square sleeve 1. A guide sleeve 3 extending downward and sleeved on the outer periphery of the end of the square sleeve 1 is fixedly arranged at the front end of the adjustment sleeve 2. The upper end of the adjustment sleeve 2 is fixedly connected to the upper end of the guide sleeve 3 through a connecting part 20, and the connecting part 20 is arc-shaped. A clamping plate 4 is fixedly arranged at the front end of the square sleeve 1. A jack 5 for inserting a chisel head is formed at the front end of the square sleeve 1. A through hole 6 communicating with the outside of the square sleeve 1 is formed on the inner wall of the jack 5. A steel ball 7 for locking the chisel head is movably arranged in the through hole 6. A locking member 8 for buckling on the outer periphery of the through hole 6 is movably arranged on the outer periphery of the front end of the square sleeve 1. A first spring 9 for driving the locking member 8 to move downward is arranged between the clamping plate 4 and the locking member 8. A second spring 10 for driving the locking member 8 to move upward is arranged between the locking member 8 and the guide sleeve 3. A relief groove 11 with a diameter larger than the inner diameter of the locking member 8 is formed at the lower end of the locking member 8. A support ring 12 is fixedly arranged in the guide sleeve 3. The above-mentioned second spring 10 is located between the support ring 12 and the locking member 8. Driven by the first spring 9 and the second spring 10, a locking part 13 buckles on the outer periphery of the through hole 6. During the upward movement of the adjustment sleeve 2, driven by the second spring 10, the first spring 9 is gradually compressed until the locking member 8 abuts against the clamping plate 4. At this time, the relief groove 11 on the locking member 8 is aligned with the through hole 6. A front cylinder plastic protective sleeve 19 is sleeved on the outer periphery of the square sleeve 1. The front cylinder plastic protective sleeve 19 is fixedly arranged on the square sleeve 1 through screws. The above-mentioned adjustment sleeve 2 abuts against the upper end of the front cylinder plastic protective sleeve 19.

[0018] During the use process, the chisel head is inserted into the jack 5, the steel ball 7 is clamped on the chisel head, and the steel ball 7 is always pressed against the chisel head by the locking member 8 buckling on the outer periphery of the through hole 6 to complete the locking of the chisel head. During adjustment, by driving the adjustment sleeve 2 to move upward and driving the locking member 8 to move upward through the second spring 10, the locking member 8 is disengaged from the through hole 6, and the relief groove 11 is aligned with the through hole 6. The steel ball 7 moves outward along the channel and disengages from the chisel head. After directly removing the chisel head, adjusting it to the required angle and then reinserting it, releasing the adjustment sleeve 2 can complete the locking again, and the adjustment is relatively convenient.

[0019] A locking part 13 is fixedly arranged inside the square sleeve 1, and a cylinder 14 extending upward in a circle is fixedly arranged inside the locking part 13. The guiding sleeve 3 is movably arranged on the outer periphery of the cylinder 14 and can move along the length direction of the square sleeve 1. A plurality of guiding grooves 15 extending in the vertical direction are formed on the outer periphery of the cylinder 14, and a plurality of guiding strips 16 for clamping in the guiding grooves 15 are formed on the inner wall of the guiding sleeve 3. The moving distance of the guiding sleeve 3 along the length direction of the square sleeve 1 is greater than the height of the cylinder 14. A plurality of first teeth 17 are fixedly arranged at the upper end of the locking part 13, and a plurality of second teeth 18 for clamping between two adjacent first teeth 17 are fixedly arranged at the lower end of the guiding sleeve 3. During the movement of the adjusting sleeve 2, the guiding strips 16 on the guiding sleeve 3 always move in the guiding grooves 15, and the circumferential locking of the guiding sleeve 3 is completed through the clamped first teeth 17 and second teeth 18.

[0020] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. The obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An electric pick with a new head grip locking adjustment structure, characterized in that: The invention comprises an adjusting sleeve (2) movably sleeved on the outer periphery of a square sleeve (1), a guide sleeve (3) extending downward and sleeved on the outer periphery of the end of the square sleeve (1) being fixedly arranged at the front end of the adjusting sleeve (2), a buckle plate (4) being fixedly arranged at the front end of the square sleeve (1), a plug hole (5) for inserting a chisel head being provided at the front end of the square sleeve (1), a through hole (6) connected to the outside of the square sleeve (1) being provided on the inner wall of the plug hole (5), a steel ball (7) for locking the chisel head being movably arranged in the through hole (6), a locking member (8) for buckling on the outer periphery of the through hole (6) being movably arranged at the outer periphery of the front end of the square sleeve (1), a first spring (9) for driving the locking member (8) to move downward being arranged between the buckle plate (4) and the locking member (8), A second spring (10) for driving the locking member (8) to move upward is provided between the locking member (8) and the guide sleeve (3), and a clearance groove (11) having a diameter greater than the inner diameter of the locking member (8) is provided at the lower end of the locking member (8).

2. The electric pick with a novel head holding locking adjustment structure according to claim 1 is characterized in that: A support ring (12) is fixedly disposed inside the guide sleeve (3), and the second spring (10) is located between the support ring (12) and the locking member (8).

3. The electric pick with a novel head holding locking adjustment structure according to claim 1, characterized in that: A locking portion (13) is fixedly arranged inside the square sleeve (1), and a cylinder (14) extending upward is fixedly arranged inside the locking portion (13). The guide sleeve (3) is movably arranged on the outer periphery of the cylinder (14) and can move along the length direction of the square sleeve (1). The outer periphery of the cylinder (14) is provided with a plurality of guide grooves (15) extending in the vertical direction. The inner wall of the guide sleeve (3) is provided with a plurality of guide strips (16) for clamping in the guide grooves (15). The moving distance of the guide sleeve (3) along the length direction of the square sleeve (1) is greater than the height of the cylinder (14).

4. The electric pick with a novel head grip locking adjustment structure according to claim 3, characterized in that: A plurality of first latching teeth (17) are fixedly provided at the upper end of the locking portion (13), and a plurality of second latching teeth (18) for latching between two adjacent first latching teeth (17) are fixedly provided at the lower end of the guide sleeve (3).

5. The electric pick with a novel head holding locking adjustment structure according to claim 1, characterized in that: The upper end of the adjustment sleeve (2) is fixedly connected to the upper end of the guide sleeve (3) via a connecting portion (20), and the connecting portion (20) is in an arc shape.

6. The electric pick with a novel head holding locking adjustment structure according to claim 1, characterized in that: A front-tube plastic protective sleeve (19) is provided on the outer periphery of the square sleeve (1). The front-tube plastic protective sleeve (19) is fixed on the square sleeve (1) by means of screws, and the adjustment sleeve (2) abuts against the upper end of the front-tube plastic protective sleeve (19).

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