Simple self-locking mini quick chuck

Abstract

The utility model discloses a simple self-locking mini quick chuck, and relates to the technical field of tools. A clamping spring groove is formed in the outer side wall of the core shaft, the clamping spring is installed in the clamping spring groove, an inclined V-shaped groove is formed in the outer side wall of the core shaft, a hexagonal inserting groove is formed in the axis position of the core shaft, the V-shaped groove is communicated with the hexagonal inserting groove, the core shaft is sleeved with the spring, the front end of the spring is provided with a transverse end body, and the transverse end body is arranged in the V-shaped groove. The spring is sleeved with the outer sleeve, the mandrel is sleeved with the inner sleeve, and the inner sleeve is in interference fit with an inner hole in the tail of the outer sleeve; according to the screwdriver, quick clamping type installation and quick disassembly of the screwdriver head are achieved, meanwhile, the size is small, carrying is convenient, the screwdriver head is clamped through the transverse end body of the spring, the phenomenon that the screwdriver head is not prone to falling off is not prone to occurring, and the installation stability of the screwdriver head can be improved; the outer sleeve drives the transverse end body of the spring to be separated from the groove of the screwdriver head, so that the screwdriver head can be quickly disassembled.

Description

Technical Field

[0001] The utility model belongs to the technical field of tools, and particularly relates to a simple self-locking mini quick chuck. Background Art

[0002] The bit is also called a screwdriver head, a screwdriver head, and the bit can be used with manual or power tools. Power tools are large and inconvenient to carry, while hand tools are small and easy to carry. However, existing hand tools need to be used with other tools when carrying, which makes it inconvenient to carry. At the same time, after the bit is installed, the bit is easy to fall off, resulting in poor stability after the bit is installed. Summary of the Invention

[0003] In order to solve the problems mentioned in the above background technology, the purpose of the utility model is to provide a simple self-locking mini quick chuck, which is not easy to fall off after the bit is installed, thereby improving the stability of the bit after installation.

[0004] The utility model discloses a simple self-locking mini quick chuck, which comprises a core shaft, an inner sleeve, a spring, an outer sleeve and a retaining spring; a retaining spring groove is provided on the outer side wall of the core shaft, the retaining spring is installed in the retaining spring groove, an inclined V-shaped groove is provided on the outer side wall of the core shaft, a hexagonal plug-in groove is provided at the axial center position of the core shaft, the V-shaped groove is connected to the hexagonal plug-in groove, the spring is sleeved on the outer side of the core shaft, a transverse end body is provided at the front end of the spring, the transverse end body is arranged in the V-shaped groove, the outer sleeve is sleeved on the outer side of the spring, the inner sleeve is sleeved on the outer side of the core shaft, and the inner sleeve is interference fit with the inner hole of the tail end of the outer sleeve.

[0005] Preferably, a mounting hole extending vertically through the core shaft is provided at the rear end thereof, and the key ring is mounted in the mounting hole.

[0006] Preferably, a mounting groove is provided on the outer side wall of the outer sleeve, and an O-ring is installed in the mounting groove.

[0007] Compared with the existing technology, the present invention has the following advantages: the drill bit can be quickly installed and removed by the cooperation of the core shaft, inner sleeve, spring, outer sleeve and retaining spring, and the tool is small in size and easy to carry.

[0008] 1. The horizontal end of the spring is used to clamp the bit, so that the bit is not easy to fall off, and the stability of the bit installation can be improved.

[0009] Second, the outer sleeve drives the transverse end of the spring to disengage from the V-shaped groove, making it easier for the transverse end to disengage from the groove of the bit, so that the bit can be quickly disassembled.

[0010] 3. It is portable for easy carrying and uses a key chain to prevent it from falling off when carrying, thus improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] For ease of explanation, the present invention is described in detail with reference to the following specific embodiments and accompanying drawings.

[0012] Figure 1 This is an exploded schematic diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the utility model with a spring installed on the core shaft;

[0014] Figure 3 It is a structural diagram of the utility model;

[0015] Figure 4 for Figure 3 sectional view of ;

[0016] Figure 5 This is a schematic diagram of the structure of the screwdriver bit when it is installed in the utility model;

[0017] Figure 6 It is a schematic diagram of the structure of the clamping of the screwdriver bit in the present invention.

[0018] In the figure: 1- mandrel; 2- inner sleeve; 3- spring; 4- outer sleeve; 5- retaining spring; 6- key ring; 7- O-ring; 8- bit;

[0019] 1-1-circlip groove; 1-2-V-shaped groove; 1-3-mounting hole; 1-4-hexagonal socket;

[0020] 3-1- transverse end body;

[0021] 4-1-Mounting slot. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is described below through the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. They are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0023] It should also be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0024] like Figures 1 to 4 As shown, this specific embodiment adopts the following technical scheme: it includes a core shaft 1, an inner sleeve 2, a spring 3, an outer sleeve 4, and a retaining spring 5; a retaining spring groove 1-1 is provided on the outer wall of the core shaft 1, and the retaining spring 5 is installed in the retaining spring groove 1-1. The retaining spring 5 can realize the limit of the spring 3, and an inclined V-shaped groove 1-2 is provided on the outer wall of the core shaft 1. A hexagonal plug groove 1-4 is provided at the axial position of the core shaft 1. The hexagonal plug groove 1-4 can realize the installation of the batch head 8. The V-shaped groove 1-2 is connected to the hexagonal plug groove 1-4. The spring 3 is sleeved on the outer side of the core shaft 1, and the front end of the spring 3 is provided with a transverse end body 3-1. The transverse end body 3-1 is provided It is placed in the V-shaped groove 1-2, and the horizontal end body 3-1 can be engaged with the groove of the bit 8 to facilitate the locking of the bit 8. The outer sleeve 4 is sleeved on the outside of the spring 3, and the inner sleeve 2 is sleeved on the outside of the core shaft 1, and the inner sleeve 2 and the inner hole at the tail of the outer sleeve 4 are interference fit, and the inner sleeve 2 can realize the limitation of the outer sleeve 4; the rear end of the core shaft 1 is provided with a mounting hole 1-3 that passes through from top to bottom, and the key ring 6 is installed in the mounting hole 1-3, and the key ring 6 can be conveniently carried; the outer wall of the outer sleeve 4 is provided with a mounting groove 4-1, and an O-ring 7 is installed in the mounting groove 4-1. The O-ring 7 can improve the aesthetics and can achieve anti-slip of the outer sleeve 4.

[0025] In this embodiment, when the bit 8 is installed, the bit 8 is inserted into the hexagonal socket 1-4 of the core shaft 1. At this time, the bit 8 pushes the transverse end 3-1 of the spring 3, and the transverse end 3-1 moves upward along the slope of the V-shaped groove 1-2 of the core shaft 1 (as shown in FIG. Figure 5 As shown in the figure), when the groove of the bit 8 is inserted into the V-groove 1-2 of the core shaft 1, the transverse end 3-1 of the spring 3 will slide down along the slope of the V-groove 1-2 of the core shaft 1 and fall into the groove of the bit 8. At this time, the groove of the bit 8 will be clamped by the transverse end 3-1, and when the key ring 7 is pulled with one hand and the bit 8 is pulled with the other hand, the bit 8 cannot be pulled out and is in a stuck state (as shown in the figure). Figure 6 shown).

[0026] When removing the bit 8 in this specific embodiment, the outer sleeve 4 is slid backward, and the outer sleeve 4 will drive the spring to move backward. At this time, the transverse end body 3-1 of the spring 3 will follow and move backward. The transverse end body 3-1 will move upward along the slope of the V-shaped groove 1-2 of the core shaft 1, and the transverse end body 3-1 will be out of the groove of the bit 8. At this time, the bit 8 can be pulled out.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

[0028] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A simple self-locking mini quick chuck, characterized by: The invention comprises a core shaft (1), an inner sleeve (2), a spring (3), an outer sleeve (4), and a retaining spring (5); a retaining spring groove (1-1) is provided on the outer wall of the core shaft (1), and the retaining spring (5) is installed in the retaining spring groove (1-1); an inclined V-shaped groove (1-2) is provided on the outer wall of the core shaft (1); a hexagonal plug groove (1-4) is provided at the axis position of the core shaft (1); the V-shaped groove (1-2) is connected to the hexagonal plug groove (1-4); the spring (3) is sleeved on the outer side of the core shaft (1); a transverse end body (3-1) is provided at the front end of the spring (3); the transverse end body (3-1) is arranged in the V-shaped groove (1-2); the outer sleeve (4) is sleeved on the outer side of the spring (3); the inner sleeve (2) is sleeved on the outer side of the core shaft (1), and the inner sleeve (2) and the inner hole of the tail of the outer sleeve (4) are interference fit.

2. The simple self-locking mini quick chuck according to claim 1, characterized in that: A mounting hole (1-3) extending vertically is provided at the rear end of the core shaft (1), and the key ring (6) is mounted in the mounting hole (1-3).

3. The simple self-locking mini quick chuck according to claim 1, characterized in that: An installation groove (4-1) is provided on the outer side wall of the outer sleeve (4), and an O-ring (7) is installed in the installation groove (4-1).

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