Manual quick chuck with self-locking function

Abstract

The utility model discloses a manual quick chuck with a self-locking function, and relates to the technical field of chucks. A hexagonal shaft hole is formed in the front end of the mandrel, two long sliding grooves are formed in the outer side wall of the mandrel and communicated with the hexagonal shaft hole, the mandrel is sleeved with the spring, the two steel balls are arranged in the two long sliding grooves respectively, the C-shaped gasket is arranged on the rear sides of the two steel balls, and the rear side wall of the C-shaped gasket makes contact with the front side of the spring. The outer sleeve is sleeved on the outer side of the core shaft; the clamp spring is clamped in the clamp spring groove; according to the self-locking screwdriver, a screwdriver bit or a 1 / 4 hexagonal tool can be mounted and dismounted, meanwhile, self-locking can be achieved, and time can be saved; the steel balls are clamped in a 9.5 groove and a thirteenth groove to a seventeenth groove of a bit or a 1 / 4 hexagonal tool, so that the self-locking of the tool can be realized; by pressing the outer sleeve, the screwdriver head or the 1 / 4 hexagonal tool can be quickly pulled out, the tool can be quickly disassembled conveniently, and meanwhile the screwdriver can be used as a manual screwdriver.

Description

Technical Field

[0001] The utility model belongs to the technical field of chucks, and particularly relates to a manual quick chuck with a self-locking function. Background Technique

[0002] At present, the existing electric hand drills generally consist of a drill bit, a speed-changing device, a control device and a motor. Due to unreasonable design, the existing fixed heads for electric hand drills are not easy to tighten when fixing the drill bit to the fixed bit or 1 / 4 hexagon tools. During use, looseness is likely to occur, reducing stability, and disassembly is also inconvenient, wasting time. Summary of the Invention

[0003] To solve the problems mentioned in the above background technique; the purpose of the utility model is to provide a manual quick chuck with a self-locking function, which is convenient for realizing the self-locking and disassembly of tools and saves time.

[0004] A manual quick chuck with a self-locking function of the utility model includes an outer sleeve, a mandrel, a snap ring, a C-shaped gasket, a spring and steel balls; a hexagonal shaft hole is opened at the front end of the mandrel, and two long-shaped sliding grooves are opened on the outer side wall of the mandrel. The long-shaped sliding grooves are communicated with the hexagonal shaft hole. The spring is sleeved on the outer side of the mandrel. Two steel balls are respectively arranged in the two long-shaped sliding grooves. A C-shaped gasket is arranged at the rear sides of the two steel balls. The rear side wall of the C-shaped gasket is in contact with the front side of the spring. The outer sleeve is sleeved on the outer side of the mandrel. A snap ring groove is opened at the front side of the mandrel, and the snap ring is clamped in the snap ring groove.

[0005] Preferably, a pushing piece is arranged in the middle of the C-shaped gasket, and the pushing piece is arranged in the long-shaped sliding groove.

[0006] Preferably, a sliding hole is opened at the rear side of the inner hole of the outer sleeve, and an inner groove is arranged at the front side of the inner hole of the outer sleeve.

[0007] Preferably, an anti-slip sleeve is arranged on the outer side wall of the outer sleeve.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: the installation of the bit or 1 / 4 hexagon tools is realized through the mutual cooperation of the outer sleeve, the mandrel, the snap ring, the C-shaped gasket, the spring and the steel balls. At the same time, self-locking can be realized, which is convenient for quick installation and disassembly and can save time. The specific advantages are as follows:

[0009] 1. The steel balls are used to realize clamping in the 9.5 grooves and the grooves from 13 to 17 of the bit or 1 / 4 hexagon tools, and the self-locking of the tools can be realized.

[0010] 2. By pressing the outer sleeve, the bit or 1 / 4 hexagon tools can be quickly pulled out, which is convenient for realizing the quick disassembly of the tools.

[0011] 3. The outer sleeve has the same shape as the screwdriver handle and can achieve anti-slip, and can be used as a manual screwdriver. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] For ease of explanation, the present utility model will be described in detail by the following specific embodiments and the accompanying drawings.

[0013] Figure 1 is an exploded view of the present utility model;

[0014] Figure 2 is a schematic structural diagram of the present utility model;

[0015] Figure 3 is Figure 2 a cross-sectional view of;

[0016] Figure 4 is a schematic structural diagram of the bit mounting structure in the present utility model;

[0017] Figure 5 is a schematic structural diagram of the bit self-locking in the present utility model;

[0018] Figure 6 is a schematic structural diagram of the bit disassembly in the present utility model.

[0019] In the figures: 1 - outer sleeve; 2 - mandrel; 3 - circlip; 4 - C-shaped gasket; 5 - spring; 6 - steel ball; 7 - bit;

[0020] 11 - sliding hole; 12 - inner groove;

[0021] 21 - elongated sliding groove; 22 - circlip groove;

[0022] 41 - pushing piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and do not limit the scope of the present utility model. The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limiting conditions under which the present utility model can be implemented. Therefore, they do not have technical substance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the efficacy that the present utility model can produce and the purpose that can be achieved, should still fall within the scope covered by the technical content disclosed by the present utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessarily confusing the concept of the present utility model.

[0024] Here, it should also be noted that in order to avoid obscuring the present utility model due to unnecessary details, only the structures and / or processing steps closely related to the solution according to the present utility model are shown in the drawings, while other details less relevant to the present utility model are omitted.

[0025] As Figures 1 to 6 shown, the following technical solution is adopted in this specific embodiment: It includes an outer sleeve 1, a mandrel 2, a circlip 3, a C-shaped gasket 4, a spring 5, and steel balls 6; a hexagonal shaft hole is provided at the front end of the mandrel 2, and the hexagonal shaft hole can realize the installation of a bit or a 1 / 4 hexagonal tool. Two elongated sliding grooves 21 are provided on the outer side wall of the mandrel 2, and the elongated sliding grooves 21 communicate with the hexagonal shaft hole. The spring 5 is sleeved on the outer side of the mandrel 2. Two steel balls 6 are respectively arranged in the two elongated sliding grooves 21, and the steel balls 6 can realize locking with the 9.5 grooves and the grooves from 13 to 17 of the bit or the 1 / 4 hexagonal tool. A C-shaped gasket 4 is arranged at the rear side of the two steel balls 6, and the rear side wall of the C-shaped gasket 4 is in contact with the front side of the spring 5. The outer sleeve 1 is sleeved on the outer side of the mandrel 2. A circlip groove 22 is provided at the front side of the mandrel 2, and the circlip 3 is clamped in the circlip groove 22, and the circlip 3 can realize the fixation of the outer sleeve 1; a push piece 41 is arranged in the middle of the C-shaped gasket 4, and the push piece 41 is arranged in the elongated sliding groove 21, and the push piece 41 can slide in the elongated sliding groove 21, and at the same time, the push piece 41 can realize pushing the steel ball 6; a sliding hole 11 is provided at the rear side of the inner hole of the outer sleeve 1, and an inner groove 12 is provided at the front side of the inner hole of the outer sleeve 1; an anti-slip sleeve is arranged on the outer side wall of the outer sleeve 1, and the anti-slip sleeve can improve the anti-slip property, so that it is not easy to slide when used as a manual screwdriver.

[0026] The working principle of this specific embodiment is as follows: The assembly method is to first assemble the spring 5 onto the mandrel 2, then assemble the two C-shaped gaskets 4 onto the mandrel 2 respectively, then put the two steel balls 6 into the two slot holes on the mandrel 2, then assemble the outer sleeve 1 onto the mandrel 2, and finally assemble the circlip 3 onto the mandrel 2. The assembly is completed as Figure 2 shown. Its function is: As Figure 4 shown, when the user inserts the bit 7 or the 1 / 4 hexagonal tool into the hexagonal shaft hole of the mandrel 2, the bit 7 will contact the steel ball 6 and push the steel ball 6 to move in the elongated sliding groove 21 of the mandrel 2. At the same time, the two C-shaped gaskets 4 will also be pushed by the steel ball 6 against the spring 5, and the spring 5 is in a compressed state. When the steel ball 6 is pushed to the sliding hole 11 at the rear end of the outer sleeve 1; as Figure 5 shown, when the bit 7 is inserted into the hexagonal shaft hole of the mandrel 2, the directional force of the spring 5 will push the C-shaped gasket 4, and at the same time, push the two steel balls 6 to slide into the 9.5 grooves of the bit 7 and complete the cooperation with the inner hole of the outer sleeve 1 to form self-locking; as Figure 6As shown, when replacing the bit, press the outer sleeve 1 to push the C-shaped elastic piece 4 to compress the spring 5. When the inner groove 12 of the outer sleeve 1 is aligned with the steel ball 6, when the bit 7 is pulled out, the bit 7 will drive the steel ball 6 to retract into the inner groove 12, and then the steel ball 6 completes the release action, and the bit 7 is taken out from the mandrel 2; This self-locking chuck can be used for bits with 9.5 grooves and bits with 13 to 17 grooves or 1 / 4 hexagon tools at the same time.

[0027] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model.

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

Claims

1. A manual quick chuck with a self-locking function, characterized in that: It includes an outer sleeve (1), a mandrel (2), a circlip (3), a C-shaped gasket (4), a spring (5), and steel balls (6); a hexagonal shaft hole is provided at the front end of the mandrel (2), and two long sliding grooves (21) are provided on the outer side wall of the mandrel (2), the long sliding grooves (21) communicate with the hexagonal shaft hole, the spring (5) is sleeved on the outer side of the mandrel (2), two steel balls (6) are respectively arranged in the two long sliding grooves (21), a C-shaped gasket (4) is arranged at the rear side of the two steel balls (6), the rear side wall of the C-shaped gasket (4) is in contact with the front side of the spring (5), the outer sleeve (1) is sleeved on the outer side of the mandrel (2), a circlip groove (22) is provided at the front side of the mandrel (2), and the circlip (3) is snap-fitted in the circlip groove (22).

2. The manual quick chuck with a self-locking function according to claim 1, characterized in that: A push piece (41) is arranged in the middle of the C-shaped gasket (4), and the push piece (41) is arranged in the long sliding groove (21).

3. The manual quick chuck with a self-locking function according to claim 1, characterized in that: A sliding hole (11) is provided at the rear side of the inner hole of the outer sleeve (1), and an inner groove (12) is provided at the front side of the inner hole of the outer sleeve (1).

4. The manual quick chuck with a self-locking function according to claim 3, wherein: An anti-slip sleeve is arranged on the outer side wall of the outer sleeve (1).

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