A screwdriver bit fixing structure for electric screwdrivers

Abstract

This utility model belongs to the field of screwdriver bits, specifically a screwdriver bit fixing structure for an electric screwdriver, including a connecting sleeve; a threaded sleeve is threadedly connected to the bottom of the connecting sleeve, a bit sleeve is slidably connected to the inner side of the threaded sleeve, and a suction nozzle is fixedly connected to the bottom of the bit sleeve; a sealing ring is provided on the inner side of the connecting sleeve, and an adapter shaft is rotatably connected to the inner side of the connecting sleeve via a bushing; by connecting the threaded sleeve and the connecting sleeve, the threaded sleeve drives the bit sleeve and the suction nozzle to be fitted onto the outside of the screwdriver bit, and the bit sleeve and the suction nozzle can limit the position of the screwdriver bit, making the screwdriver bit more stable when tightening the screw; by separating the bit sleeve from the threaded sleeve, the screwdriver bit can be removed and replaced; the front-end reinforced tightening method reduces tightening vibration, while also accommodating quick replacement.

Description

Technical Field

[0001] This utility model relates to the field of screwdriver bits, specifically a screwdriver bit fixing structure for an electric screwdriver. Background Technology

[0002] An electric screwdriver uses electricity to rotate the screwdriver head, thus tightening and loosening screws. The screwdriver head can be manually replaced to allow operation on different types of screws.

[0003] In response to the mass use of screw-adhesive machines in the market, and for some small and micro screws where the screw-in position is too deep, the front bit is prone to shaking and vibrating, which can lead to stripping of the threads and incomplete screw-in, further reducing the product yield.

[0004] Therefore, a screwdriver bit fixing structure for electric screwdrivers is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a screwdriver bit fixing structure for electric screwdrivers.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: An electric screwdriver bit fixing structure of this utility model includes a connecting sleeve; a threaded sleeve is threadedly connected to the bottom of the connecting sleeve, a bit sleeve is slidably connected to the inner side of the threaded sleeve, a suction nozzle is fixedly connected to the bottom of the bit sleeve, a sealing ring is provided on the inner side of the connecting sleeve, an adapter shaft is rotatably connected to the inner side of the connecting sleeve via a bushing, a guide rod is slidably connected inside the adapter shaft, a plastic steel rod is fixedly connected inside the adapter shaft, a bit is slidably connected inside the adapter shaft, the bit is slidably connected to the plastic steel rod, and a first spring sleeve is fixedly connected inside the connecting sleeve. The bottom of the first spring sleeve is fixedly connected to the top of the bit sleeve. A second spring sleeve is fixedly connected to the outside of the adapter shaft. A spring sleeve is fixedly connected to the bottom of the second spring sleeve. A wire shaft clamp is fixedly connected to the surface of the adapter shaft. The wire shaft clamp works in conjunction with the spring sleeve. This step connects the threaded sleeve and the connecting sleeve, so that the threaded sleeve drives the bit sleeve and the suction nozzle to be fitted onto the outside of the bit. The bit sleeve and the suction nozzle can limit the bit, making the bit more stable when tightening the screw. Separating the bit sleeve from the threaded sleeve allows the bit to be removed and replaced. The front-end reinforced tightening method reduces tightening vibration and also ensures quick replacement.

[0007] Preferably, a threaded ring is fixedly connected to the surface of the connecting sleeve above the threaded sleeve, and the surface of the threaded ring is provided with anti-slip texture; this step facilitates the rotation of the connecting sleeve and the threaded sleeve through the threaded ring, and increases the friction when rotating the connecting sleeve.

[0008] Preferably, a ball bearing is rolled on the inner side of the adapter shaft, and the surface of the ball bearing is rolled on the spring sleeve. In this step, when the adapter shaft rotates, it drives the ball bearing to roll on the inner side of the spring sleeve, thereby reducing the friction between the inner side of the spring sleeve and the adapter shaft.

[0009] Preferably, a limiting ring is provided on the inner side of the connecting sleeve, and the inner side of the limiting ring is rotatably connected to the adapter shaft; in this step, the two limiting rings can limit and reinforce the adapter shaft on the inner side of the connecting sleeve.

[0010] Preferably, a sealing gasket is fixedly connected to the inner side of the bit sleeve, and the sealing gasket is slidably connected to the bit; this step can seal the connection between the bit sleeve and the bit through the sealing gasket, preventing air from entering the inside of the bit sleeve and flowing upward.

[0011] Preferably, the inner side of the suction nozzle is slidably connected to the bit, and the bottom of the suction nozzle has several air holes located on the outer side of the bit; in this step, through the several air holes at the bottom of the suction nozzle, gas can be drawn into the bolt below through the suction nozzle, and at the same time, the inner side of the suction nozzle can also limit the rotation of the bottom end of the bit.

[0012] The advantages of this utility model are:

[0013] 1. The electric screwdriver bit fixing structure of this utility model connects a threaded sleeve and a connecting sleeve, so that the threaded sleeve drives the bit sleeve and the suction nozzle to be fitted on the outside of the bit. The bit sleeve and the suction nozzle can limit the bit, making the bit more stable when tightening screws. The bit sleeve can be separated from the threaded sleeve to remove the bit for replacement. The front-end reinforcement locking method reduces tightening vibration and also provides a quick replacement function.

[0014] 2. The electric screwdriver bit fixing structure of this utility model facilitates the separation of the rotating connecting sleeve and the threaded sleeve through the threaded ring, thereby increasing the friction when rotating the connecting sleeve. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional sectional view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the surface structure of the adapter shaft in this utility model;

[0019] Figure 4 This is a schematic diagram of the adapter shaft structure in this utility model;

[0020] Figure 5 This is a side view of the main structure of this utility model.

[0021] Legend: 1. Connecting sleeve; 12. Threaded sleeve; 13. Bit sleeve; 14. Suction nozzle; 15. Sealing ring; 16. Adapter shaft; 17. Guide rod; 18. Plastic steel rod; 19. Bit; 110. First spring sleeve; 111. Second spring sleeve; 112. Spring sleeve; 113. Steel wire shaft clamp; 21. Threaded ring; 31. Ball bearing; 41. Limiting ring; 51. Sealing washer. Detailed Implementation

[0022] 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.

[0023] like Figures 1 to 5As shown, an electric screwdriver bit fixing structure includes a connecting sleeve 1; a threaded sleeve 12 is threadedly connected to the bottom of the connecting sleeve 1, a bit sleeve 13 is slidably connected to the inner side of the threaded sleeve 12, a suction nozzle 14 is fixedly connected to the bottom of the bit sleeve 13, a sealing ring 15 is provided on the inner side of the connecting sleeve 1, an adapter shaft 16 is rotatably connected to the inner side of the connecting sleeve 1 via a bushing, a guide rod 17 is slidably connected inside the adapter shaft 16, a plastic steel rod 18 is fixedly connected inside the adapter shaft 16, a bit 19 is slidably connected inside the adapter shaft 16, the bit 19 is slidably connected to the plastic steel rod 18, a first spring sleeve 110 is fixedly connected inside the connecting sleeve 1, and a second spring sleeve 110 is fixedly connected inside the connecting sleeve 1. The bottom of a spring sleeve 110 is fixedly connected to the top of a bit sleeve 13. A second spring sleeve 111 is fixedly connected to the outer side of the adapter shaft 16. A spring sleeve 112 is fixedly connected to the bottom of the second spring sleeve 111. A wire shaft clamp 113 is fixedly connected to the surface of the adapter shaft 16. The wire shaft clamp 113 works in conjunction with the spring sleeve 112. During operation, the screwdriver connector is connected to the guide rod 17. The guide rod 17 drives the adapter shaft 16 to rotate inside the connecting sleeve 1. The adapter shaft 16 drives the plastic steel rod 18 to rotate. The plastic steel rod 18 then drives the bit 19 to rotate. The bottom end of the bit 19 rotates inside the suction nozzle 14. The suction nozzle 14 then rotates the bit 19. The bottom end is limited. When the suction nozzle 14 is pushed upward, the suction nozzle 14 drives the bit sleeve 13 to move upward, so that the bit sleeve 13 enters the interior of the threaded sleeve 12. At the same time, the bit sleeve 13 pushes the first spring sleeve 110 to retract, and the first spring sleeve 110 can push the bit sleeve 13 to move downward, so that the bit sleeve 13 drives the suction nozzle 14 to move downward and reset. When the bit 19 moves upward, it drives the wire shaft clamp 113 to move, and pushes the spring sleeve 112 to move through the wire shaft clamp 113. The spring sleeve 112 pushes the second spring sleeve 111 to retract. When the second spring sleeve 111 pushes the spring sleeve 112 again, the wire shaft clamp 113 resets. Step 113 then moves the bit 19 down to reset, separating the bit sleeve 13 from the threaded sleeve 12. The bit 19 can then be rotated to separate it from the adapter shaft 16, allowing the bit 19 to be replaced. This step involves connecting the threaded sleeve 12 to the connecting sleeve 1, causing the threaded sleeve 12 to move the bit sleeve 13 and the suction nozzle 14 onto the outside of the bit 19. The bit sleeve 13 and the suction nozzle 14 can limit the bit 19, making the bit 19 more stable when fastening the screw. Separating the bit sleeve 13 from the threaded sleeve 12 allows the bit 19 to be removed and replaced. The front-end reinforced fastening method reduces fastening vibration while also providing a quick replacement function.

[0024] like Figures 1 to 2As shown, a threaded ring 21 located above the threaded sleeve 12 is fixedly connected to the surface of the connecting sleeve 1. The surface of the threaded ring 21 is provided with anti-slip texture. During operation, when it is necessary to separate the threaded sleeve 12 from the connecting sleeve 1, the operator can rotate the connecting sleeve 1 through the threaded ring 21 to separate its inner side from the threaded sleeve 12. This step is facilitated by the threaded ring 21 to rotate the connecting sleeve 1 and separate it from the threaded sleeve 12, thereby increasing the friction when rotating the connecting sleeve 1.

[0025] like Figure 2 and Figure 4 As shown, a ball bearing 31 is rolled on the inner side of the adapter shaft 16, and the surface of the ball bearing 31 is rolled on the spring sleeve 112. When the adapter shaft 16 rotates in this step, it drives the ball bearing 31 to roll on the inner side of the spring sleeve 112, thereby reducing the friction between the inner side of the spring sleeve 112 and the adapter shaft 16.

[0026] like Figure 2 As shown, a limiting ring 41 is provided on the inner side of the connecting sleeve 1, and the inner side of the limiting ring 41 is rotatably connected to the adapter shaft 16; in this step, the two limiting rings 41 can limit and reinforce the adapter shaft 16 on the inner side of the connecting sleeve 1.

[0027] like Figure 2 As shown, a sealing gasket 51 is fixedly connected to the inner side of the bit sleeve 13, and the sealing gasket 51 is slidably connected to the bit 19. This step can seal the connection between the bit sleeve 13 and the bit 19 through the sealing gasket 51 to prevent air from entering the inside of the bit sleeve 13 and flowing upward.

[0028] like Figure 5 As shown, the inner side of the suction nozzle 14 is slidably connected to the bit 19, and the bottom of the suction nozzle 14 has several air holes located on the outside of the bit 19. In this step, through the several air holes at the bottom of the suction nozzle 14, the gas can be drawn onto the bolt below through the suction nozzle 14, and at the same time, the inner side of the suction nozzle 14 can also limit the rotation of the bottom end of the bit 19.

[0029] Working principle: By connecting the screwdriver connector to the guide rod 17, the guide rod 17 drives the adapter shaft 16 to rotate inside the connecting sleeve 1. The adapter shaft 16 drives the plastic steel rod 18 to rotate, which in turn drives the screwdriver bit 19 to rotate. The bottom end of the screwdriver bit 19 rotates inside the suction nozzle 14, which limits the bottom end of the screwdriver bit 19. When the suction nozzle 14 is pushed upward, it drives the screwdriver bit sleeve 13 to move upward, allowing the screwdriver bit sleeve 13 to enter the threaded sleeve 12. Simultaneously, the screwdriver bit sleeve 13 pushes the first spring sleeve 110 to retract, and the first spring sleeve 110 can push the screwdriver bit sleeve 13 downward, causing the screwdriver bit sleeve 13 to drive the suction nozzle 14 downward. When the bit 19 moves upward, it drives the wire shaft clamp 113 to move, which in turn pushes the spring sleeve 112 to move. The spring sleeve 112 then pushes the second spring sleeve 111 to retract. When the second spring sleeve 111 pushes the spring sleeve 112 again, the wire shaft clamp 113 resets. The wire shaft clamp 113 then drives the bit 19 to move downward and reset. After separating the bit sleeve 13 from the threaded sleeve 12, the bit 19 can be rotated to separate it from the adapter shaft 16 for replacement. When it is necessary to separate the threaded sleeve 12 from the connecting sleeve 1, the operator can rotate the connecting sleeve 1 through the threaded ring 21 to separate its inner side from the threaded sleeve 12.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A screwdriver bit fixing structure for an electric screwdriver, comprising a connecting sleeve (1); characterized in that: The bottom of the connecting sleeve (1) is threadedly connected to a threaded sleeve (12), and a bit sleeve (13) is slidably connected to the inner side of the threaded sleeve (12). A suction nozzle (14) is fixedly connected to the bottom of the bit sleeve (13). A sealing ring (15) is provided on the inner side of the connecting sleeve (1). An adapter shaft (16) is rotatably connected to the inner side of the connecting sleeve (1) through a bushing. A guide rod (17) is slidably connected inside the adapter shaft (16). A plastic steel rod (18) is fixedly connected inside the adapter shaft (16). A bit is slidably connected inside the adapter shaft (16). 19), the bit (19) is slidably connected to the plastic steel rod (18), the inside of the connecting sleeve (1) is fixedly connected to the first spring sleeve (110), the bottom of the first spring sleeve (110) is fixedly connected to the top of the bit sleeve (13), the outside of the adapter shaft (16) is fixedly connected to the second spring sleeve (111), the bottom of the second spring sleeve (111) is fixedly connected to the spring sleeve (112), the surface of the adapter shaft (16) is fixedly connected to the wire shaft clip (113), and the wire shaft clip (113) is used in conjunction with the spring sleeve (112).

2. The electric screwdriver bit fixing structure according to claim 1, characterized in that: The surface of the connecting sleeve (1) is fixedly connected to a threaded ring (21) located above the threaded sleeve (12), and the surface of the threaded ring (21) is provided with anti-slip texture.

3. The electric screwdriver bit fixing structure according to claim 2, characterized in that: The inner side of the adapter shaft (16) is rolled with a ball (31), and the surface of the ball (31) is rolled with the spring sleeve (112).

4. The electric screwdriver bit fixing structure according to claim 3, characterized in that: The inner side of the connecting sleeve (1) is provided with a limiting ring (41), and the inner side of the limiting ring (41) is rotatably connected to the adapter shaft (16).

5. The electric screwdriver bit fixing structure according to claim 4, characterized in that: A sealing gasket (51) is fixedly connected to the inner side of the bit sleeve (13), and the sealing gasket (51) is slidably connected to the bit (19).

6. The electric screwdriver bit fixing structure according to claim 5, characterized in that: The inner side of the suction nozzle (14) is slidably connected to the bit (19), and the bottom of the suction nozzle (14) has several air holes located on the outside of the bit (19).

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