Hand gun type pneumatic screwdriver clamping anti-loose structure

Abstract

The utility model discloses a kind of hand gun type pneumatic screwdriver clamping anti-loose structures, it is related to hand gun type pneumatic screwdriver technical field, including assembly cylinder, the inner surface bottom of assembly cylinder is rotatably connected with two-way screw rod, the inner surface below of assembly cylinder is fixedly connected with guide rod on the upside of two-way screw rod, the surface left and right sides of guide rod and two-way screw rod are all sleeved with adjusting plate, the upper end of adjusting plate is all fixedly installed with cladding plate, the inner surface of cladding plate is fixedly connected with rubber pad, the surface middle part of cladding plate is all set with through cavity, adjusting plate is threadedly connected with two-way screw rod. Compared with the existing ordinary hand gun type pneumatic screwdriver, the hand gun type pneumatic screwdriver clamping anti-loose structure can firmly and stably assemble the batch head rod and assembly cylinder, and can be reversed two-way screw rod when disassembling, the overall disassembly operation is extremely convenient and fast, can be installed to adapt to a variety of different diameter size batch head rod, and ensure stability.

Description

Technical Field

[0001] This utility model relates to the field of pistol-type pneumatic screwdriver technology, specifically a pistol-type pneumatic screwdriver clamping and anti-loosening structure. Background Technology

[0002] A pistol-type pneumatic screwdriver is an auxiliary tool for automatically tightening bolts. Regardless of the type of screwdriver, a matching bit is required when tightening bolts. The pneumatic screwdriver connects to the corresponding bit at the end via a connector, thereby driving the bit to tighten the bolt.

[0003] Existing pistol-type pneumatic screwdrivers only require the bit to be directly snapped into the mounting piece at the end of the screwdriver when installing the bit. Then, a cap is put on to cover the connection end. This single snap-fit ​​piece will wear down over time due to the friction of continuous snapping and loosening. Excessive wear will result in an excessively large assembly gap, i.e., the bit will loosen. In severe cases, the bit may not be able to be effectively fixed and may even come loose.

[0004] Therefore, in view of this, we have studied and improved the existing structure to address its shortcomings, and proposed a pistol-type pneumatic screwdriver clamping and anti-loosening structure. Utility Model Content

[0005] The purpose of this utility model is to provide a pistol-type pneumatic screwdriver clamping anti-loosening structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pistol-type pneumatic screwdriver clamping and anti-loosening structure, comprising an assembly cylinder, a bidirectional lead screw rotatably connected to the bottom of the inner surface of the assembly cylinder, a guide rod fixedly connected to the lower part of the inner surface of the assembly cylinder above the bidirectional lead screw, adjusting plates sleeved on the left and right sides of the guide rod and the bidirectional lead screw, a covering plate fixedly installed on the upper end of the adjusting plate, a rubber pad fixedly connected to the inner surface of the covering plate, and a through cavity opened in the middle of the surface of the covering plate.

[0007] Preferably, the adjusting plate is threadedly connected to the bidirectional lead screw, and the adjusting plate is slidably connected to the guide rod.

[0008] Preferably, a bit rod is inserted into the middle of the two side covering plates inside the assembly cylinder. The shape of the covering plate is set as an arc plate that matches the circular surface of the bit rod. Limiting mechanisms are provided on both the left and right sides of the surface of the bit rod.

[0009] Preferably, the limiting mechanism includes grooves on both the left and right sides of the bit rod surface, and thrust springs are fixedly installed on the upper and lower sides of the inner surface of the grooves. The same movable plate is fixedly connected to one end of the thrust spring near the opening of the groove.

[0010] Preferably, the bottom end of the movable plate is set as an inclined surface, and the shape and size of the movable plate match the cavity.

[0011] Preferably, the right end of the bidirectional lead screw rotates through the assembly cylinder, and a handwheel is fixedly connected to the right end of the bidirectional lead screw.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, through the arrangement of a bidirectional lead screw, guide rod, adjusting plate, covering plate, and rubber pad, allows the bit rod to be inserted into the assembly cylinder at the middle of the two covering plates when it is inserted. Then, by rotating the bidirectional lead screw, the adjusting plate moves towards the center under the limit of the guide rod and the threaded force. The covering plate moves with the adjusting plate, thereby clamping and fixing the bit rod. During fixing, the rubber pad contacts the bit rod first, increasing the clamping friction, thus enabling a firm and stable assembly of the bit rod and the assembly cylinder. Disassembly is achieved by simply reversing the bidirectional lead screw. The overall disassembly and assembly operation is extremely convenient and quick, and ensures stability.

[0014] 2. This utility model, through the design of a through cavity, a limiting mechanism, a groove, a thrust spring, and a movable plate, allows the covering plate to be adjusted and moved to a state where it wraps around the bit rod but is not yet clamped. At this point, the bit rod is inserted into the center of the covering plate, and the upper end of the covering plate uses its inclined surface to push the movable plate to retract into the groove. Since the covering plate is not fully clamped, it can be rotated after the bit rod is fully inserted. When the movable plate is aligned with the through cavity, the thrust spring uses its own elastic force to push the movable plate to insert and penetrate the through cavity. At this point, the upper end of the movable plate is limited by the side wall of the through cavity and cannot move upward, thus ensuring that the bit rod is stably inserted and installed inside the assembly cylinder, preventing it from falling off. Furthermore, during rotation, the centrifugal force further stretches the thrust spring, causing the movable plate to penetrate the through cavity even deeper until it fits against the inner surface of the assembly cylinder. Even in later use, if the clamping of the covering plate becomes loose, the movable plate still works with the through cavity to effectively connect and install the bit rod without interrupting the rotational transmission, thereby further improving the stability of the installation and effectively preventing loosening of the clamp. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0016] Figure 2 This is a cross-sectional view of the assembly cylinder of this utility model;

[0017] Figure 3 This is a cross-sectional view of the bit handle of this utility model.

[0018] In the diagram: 1. Assembly cylinder; 2. Two-way lead screw; 3. Guide rod; 4. Adjusting plate; 5. Covering plate; 6. Rubber pad; 7. Through cavity; 8. Bit rod; 9. Limiting mechanism; 901. Groove; 902. Thrust spring; 903. Movable plate; 10. Handwheel. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1-3 As shown, a pistol-type pneumatic screwdriver clamping anti-loosening structure includes an assembly cylinder 1. A bidirectional lead screw 2 is rotatably connected to the bottom of the inner surface of the assembly cylinder 1. A guide rod 3 is fixedly connected to the lower part of the inner surface of the assembly cylinder 1 above the bidirectional lead screw 2. Adjusting plates 4 are sleeved on the left and right sides of the surfaces of the guide rod 3 and the bidirectional lead screw 2. A covering plate 5 is fixedly installed on the upper end of the adjusting plate 5. A rubber pad 6 is fixedly connected to the inner surface of the covering plate 5. A through cavity 7 is opened in the middle of the surface of the covering plate 5. The adjusting plate 4 is threadedly connected to the bidirectional lead screw 2, and the adjusting plate 4 is slidably connected to the guide rod 3.

[0021] By adopting the above technical solution, when the bit rod 8 is inserted into the assembly cylinder 1, the bit rod 8 will be inserted in the middle of the two side covering plates 5;

[0022] Rotating the double-acting screw 2 causes the adjusting plate 4 to move towards the center under the limit of the guide rod 3, and the covering plate 5 moves along with the adjusting plate 4, thereby clamping and fixing the bit rod 8.

[0023] Rubber pad 6 makes priority contact with bit bar 8, increasing clamping friction.

[0024] Furthermore, a bit rod 8 is inserted into the middle of the two side covering plates 5 inside the assembly cylinder 1. The shape of the covering plate 5 is set as an arc plate to match the circular surface of the bit rod 8. Limiting mechanisms 9 are provided on both the left and right sides of the surface of the bit rod 8.

[0025] By adopting the above technical solution, the shape of the covering plate 5 is matched when clamping the bit rod 8, so that it can fit and apply pressure more comprehensively.

[0026] Furthermore, the limiting mechanism 9 includes grooves 901 on both the left and right sides of the surface of the bit rod 8. Thrust springs 902 are fixedly installed on the upper and lower sides of the inner surface of the grooves 901. The same movable plate 903 is fixedly connected to one end of the thrust springs 902 near the opening of the grooves 901.

[0027] The bottom end of the movable plate 903 is set as a slope, and the shape and size of the movable plate 903 match the through cavity 7.

[0028] By adopting the above technical solution, when the bit rod 8 is inserted, the upper end of the covering plate 5 will use the inclined surface to push the movable plate 903 to retract into the groove 901. When the bit rod 8 is fully inserted, the bit rod 8 can be rotated. When the position of the movable plate 903 is aligned with the position of the through cavity 7, the thrust spring 902 can push the movable plate 903 to insert and penetrate the through cavity 7. That is, at this time, the upper end of the movable plate 903 is limited by the upper side wall of the through cavity 7, and the bit rod 8 cannot be pulled out.

[0029] During operation, the centrifugal force of rotation will further stretch the thrust spring 902, and the movable plate 903 will penetrate deeper into the cavity 7 until it fits against the inner surface of the assembly cylinder 1. Even in later use, if the clamping of the covering plate 5 becomes loose, the movable plate 903 will still cooperate with the cavity 7 to effectively connect and install, and the rotational transmission will not be interrupted.

[0030] Furthermore, the right end of the bidirectional lead screw 2 rotates through the assembly cylinder 1, and a handwheel 10 is fixedly connected to the right end of the bidirectional lead screw 2.

[0031] By adopting the above technical solution, the double-acting lead screw 2 can be easily rotated manually using the handwheel 10.

[0032] Working principle: When using this pistol-type pneumatic screwdriver with its anti-loosening clamping structure, firstly, rotate the double-acting screw 2, causing the adjusting plate 4 to move towards the center under the limit of the guide rod 3, driven by the threaded force. The covering plate 5 moves along with the adjusting plate 4, adjusting it to a state where it can cover the bit rod 8 but is not fully clamped. Then, insert the bit rod 8 into the center of the covering plate 5. The upper end of the covering plate 5 will use its inclined surface to push the movable plate 903 to retract into the groove 901. Since the covering plate 5 is not fully clamped, it can be rotated after the bit rod 8 is fully inserted until the movable plate 903 is aligned. When the cavity 7 is open, the thrust spring 902 uses its own elastic force to push the movable plate 903 to insert into and pass through the cavity 7. At this time, the upper end of the movable plate 903 is limited by the side wall of the cavity 7 and cannot move upward, which allows the bit rod 8 to be stably inserted and installed inside the assembly cylinder 1. Then, the double-acting screw 2 is rotated again to make the covering plate 5 completely close to the center and stick to the surface of the bit rod 8 for fixed clamping. The installation is carried out through two limiting and fixing methods, which can fully ensure the stability of the bit rod 8 installation and prevent loosening. This is the working principle of the pistol-type pneumatic screwdriver clamping anti-loosening structure.

Claims

1. A pistol-type pneumatic screwdriver clamping anti-loosening structure, comprising an assembly sleeve (1), characterized in that, The bottom of the inner surface of the assembly cylinder (1) is rotatably connected to a two-way lead screw (2). The bottom of the inner surface of the assembly cylinder (1) is fixedly connected to a guide rod (3) above the two-way lead screw (2). Adjusting plates (4) are sleeved on the left and right sides of the surfaces of the guide rod (3) and the two-way lead screw (2). A covering plate (5) is fixedly installed on the upper end of the adjusting plate (4). A rubber pad (6) is fixedly connected to the inner surface of the covering plate (5). A through cavity (7) is opened in the middle of the surface of the covering plate (5).

2. The anti-loosening clamping structure for a pistol-type pneumatic screwdriver according to claim 1, characterized in that, The adjusting plate (4) is threadedly connected to the bidirectional lead screw (2), and the adjusting plate (4) is slidably connected to the guide rod (3).

3. The anti-loosening clamping structure for a pistol-type pneumatic screwdriver according to claim 1, characterized in that, Inside the assembly cylinder (1), a bit rod (8) is inserted into the middle of the two side covering plates (5). The shape of the covering plate (5) is set as an arc plate matching the circular surface of the bit rod (8). Limiting mechanisms (9) are provided on both the left and right sides of the surface of the bit rod (8).

4. The anti-loosening clamping structure for a pistol-type pneumatic screwdriver according to claim 3, characterized in that, The limiting mechanism (9) includes grooves (901) on both the left and right sides of the surface of the bit rod (8). A thrust spring (902) is fixedly installed on the upper and lower sides of the inner surface of the groove (901). The same movable plate (903) is fixedly connected to one end of the thrust spring (902) near the opening of the groove (901).

5. The anti-loosening clamping structure for a pistol-type pneumatic screwdriver according to claim 4, characterized in that, The bottom end of the movable plate (903) is set as an inclined surface, and the shape and size of the movable plate (903) match the through cavity (7).

6. The anti-loosening clamping structure for a pistol-type pneumatic screwdriver according to claim 1, characterized in that, The right end of the bidirectional lead screw (2) rotates through the assembly cylinder (1), and a handwheel (10) is fixedly connected to the right end of the bidirectional lead screw (2).

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