Bit assembly structure and electric drill

Abstract

A screwdriver head assembling structure comprises a connecting assembly, the connecting assembly is composed of an inner cylinder, an outer cylinder, a first spring and a pin rod, a first protruding ring is arranged on the periphery, close to the rear section, of the inner cylinder, the outer cylinder is arranged on the front section of the periphery of the inner cylinder in a sleeving mode, a second protruding ring is arranged on the periphery, close to the front section, of the outer cylinder, and the front section of the periphery of the inner cylinder is provided with an opening inclining outwards towards the rear side; the pin rod is arranged in the opening in a sliding mode, the two ends of the pin rod are bent to form limiting structures, the spring is arranged on the periphery of the inner cylinder in a sleeving mode, one end of the first spring abuts against the first protruding ring, and the other end of the first spring corresponds to the second protruding ring and abuts against the limiting structures; the screwdriver head is configured to be capable of being inserted into the inner cylinder, an annular groove is formed in the position, close to the rear section, of the periphery of the screwdriver head, and the annular groove is matched with the pin rod. The scheme is simple, ingenious and stable in structure and suitable for popularization and application.

Description

Technical Field

[0001] The utility model relates to the technical field of electric drills, in particular to a bit assembly structure and an electric drill. Background Art

[0002] The bit of an electric drill is generally detachable, making it easy to replace different bit styles. In the prior art, a sleeve is generally provided at the output end of the electric drill, and the bit is inserted into the sleeve. The prism and prism groove cooperate to prevent the bit from rotating independently, and the magnet inside the sleeve attracts the bit, preventing it from falling out of the sleeve.

[0003] However, using magnets to attract the bit to prevent it from falling off the sleeve still has certain shortcomings. For example, the magnet is easily demagnetized after long-term use or storage. Once demagnetized, the sleeve or even the entire electric drill faces the risk of being scrapped.

[0004] Therefore, in view of the deficiencies in the prior art, it is necessary to design a screwdriver bit assembly structure and an electric drill to solve the above problems. Utility Model Content

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the present invention aims to provide a screwdriver bit assembly structure and an electric drill.

[0006] To achieve the above-mentioned and other related purposes, the present invention provides a technical solution: a screwdriver bit assembly structure, comprising:

[0007] A connecting assembly, the connecting assembly consists of an inner tube, an outer tube, a first spring and a pin rod, the outer circumference of the inner tube is provided with a first convex ring near the rear section, the outer tube is sleeved on the outer circumference front section of the inner tube, the inner circumference of the outer tube is provided with a second convex ring near the front section, the outer circumference front section of the inner tube is provided with an opening inclined outward toward the rear side, the pin rod is slidably arranged in the opening, the two ends of the pin rod are bent to form a limiting structure, the spring is sleeved on the outer circumference of the inner tube, one end of the first spring is against the first convex ring, and the other end of the first spring is correspondingly provided with the second convex ring and against the limiting structure;

[0008] A screwdriver bit is configured to be inserted into the inner cylinder, and an annular groove is provided on the outer periphery of the screwdriver bit near the rear section, and the annular groove is matched with the pin rod;

[0009] A second spring is provided in the inner cylinder, and one end of the second spring is fixedly connected to the cylinder bottom of the inner cylinder.

[0010] The preferred technical solution is: the bit is constructed as a prismatic structure, and the inner cylinder inner ring structure is matched with the bit.

[0011] An electric drill adopts the above-mentioned bit assembly structure to achieve rapid disassembly and assembly with the bit.

[0012] Due to the application of the above technical solution, the utility model has the following beneficial effects:

[0013] The utility model provides a screwdriver bit assembly structure and an electric drill. When assembling the screwdriver bit, a backward force is first applied to the outer cylinder to overcome the elasticity of the first spring, so that the first spring remains in a compressed state. Then the screwdriver bit is inserted into the inner cylinder through the front end of the inner cylinder. During the process of inserting the screwdriver bit into the inner cylinder, the pin rod is lifted up by the screwdriver bit. Then, the outer cylinder is released, and the pin rod is pushed into the annular groove on the outer periphery of the screwdriver bit under the action of the first spring to achieve locking. The screwdriver bit assembly structure is simple and ingenious, has a stable structure, and is suitable for popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the screwdriver bit and connecting components involved in the present utility model.

[0015] Figure 2 This is a cross-sectional view of the screwdriver bit involved in the present invention assembled in the connecting assembly.

[0016] Figure 3 This is a schematic diagram of the electric drill structure involved in the utility model. DETAILED DESCRIPTION

[0017] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0018] See also Figure 1-Figure 3 . It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0019] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0020] Example:

[0021] like Figures 1 to 3 As shown, according to an overall technical concept of the present invention, a screwdriver bit assembly structure is provided, comprising:

[0022] The connecting assembly consists of an inner tube 1, an outer tube 2, a first spring 3 and a pin rod 4. The outer periphery of the inner tube 1 is provided with a first convex ring 11 near the rear section. The outer tube 2 is sleeved on the front section of the outer periphery of the inner tube 1. The inner periphery of the outer tube 2 is provided with a second convex ring 21 near the front section. The front section of the outer periphery of the inner tube 1 is provided with an opening 12 inclined outward toward the rear side. The pin rod 4 is slidably arranged in the opening. The two ends of the pin rod 4 are bent to form a limiting structure. The first spring 3 is sleeved on the outer periphery of the inner tube 1. One end of the first spring 3 is against the first convex ring 11, and the other end of the first spring 3 is correspondingly provided with the second convex ring 21 and against the limiting structure.

[0023] The bit 5 is configured to be inserted into the inner tube 1 , and an annular groove 51 is provided on the outer periphery of the bit 5 near the rear section, and the annular groove 51 is matched with the pin rod 4 .

[0024] like Figures 1 to 2 As shown, in an exemplary embodiment of the present invention, a second spring (not shown) is provided in the inner cylinder 1, and one end of the second spring is fixedly connected to the bottom of the inner cylinder 1, so that the bit 5 can be automatically ejected during the disassembly process, thereby facilitating the disassembly of the bit.

[0025] like Figures 1 to 2 As shown, in an exemplary embodiment of the present invention, the bit 5 is constructed as a prismatic structure, and the inner ring structure of the inner cylinder 1 is matched with the bit 5 to prevent the bit from rotating.

[0026] An electric drill adopts the above-mentioned bit assembly structure to achieve rapid disassembly and assembly with a bit 5.

[0027] Therefore, the utility model has the following advantages:

[0028] The utility model provides a screwdriver bit assembly structure and an electric drill. When assembling the screwdriver bit, a backward force is first applied to the outer cylinder to overcome the elasticity of the first spring, so that the first spring remains in a compressed state. Then the screwdriver bit is inserted into the inner cylinder through the front end of the inner cylinder. During the process of inserting the screwdriver bit into the inner cylinder, the pin rod is lifted up by the screwdriver bit. Then, the outer cylinder is released, and the pin rod is pushed into the annular groove on the outer periphery of the screwdriver bit under the action of the first spring to achieve locking. The screwdriver bit assembly structure is simple and ingenious, has a stable structure, and is suitable for popularization and application.

[0029] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by persons skilled in the art without departing from the spirit and technical concepts disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A screwdriver bit assembly structure, characterized in that: include: A connecting assembly, the connecting assembly consists of an inner tube, an outer tube, a first spring and a pin rod, the outer circumference of the inner tube is provided with a first convex ring near the rear section, the outer tube is sleeved on the outer circumference front section of the inner tube, the inner circumference of the outer tube is provided with a second convex ring near the front section, the outer circumference front section of the inner tube is provided with an opening inclined outward toward the rear side, the pin rod is slidably arranged in the opening, the two ends of the pin rod are bent to form a limiting structure, the spring is sleeved on the outer circumference of the inner tube, one end of the first spring is against the first convex ring, and the other end of the first spring is correspondingly provided with the second convex ring and against the limiting structure; A screwdriver bit is configured to be inserted into the inner cylinder, and an annular groove is provided on the outer periphery of the screwdriver bit near the rear section, and the annular groove is matched with the pin rod; A second spring is provided in the inner cylinder, and one end of the second spring is fixedly connected to the cylinder bottom of the inner cylinder.

2. A screwdriver bit assembly structure according to claim 1, characterized in that: The bit is constructed as a prismatic structure, and the inner cylinder inner ring structure is matched with the bit.

3. An electric drill, characterized in that: The electric drill adopts the bit assembly structure according to any one of claims 1 to 2 to achieve quick disassembly and assembly with the bit.

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