Hand-tight drill chuck

Abstract

The utility model discloses a hand-tight drill chuck, and belongs to the technical field of drill chucks. The drill comprises a drill body, a nut, a nut sleeve, a clamping jaw and a rotating sleeve, the nut sleeve is connected with the nut in a matched mode, the nut sleeve is arranged between the drill body and the rotating sleeve, an elastic piece is connected to the nut sleeve, a radial driving part is arranged on the peripheral side of the nut sleeve and connected with the inner peripheral side of the rotating sleeve in a matched mode, and the rotating sleeve drives the nut sleeve to rotate. The drill chuck is simple in structure, the rotating sleeve drives the nut sleeve to rotate, the nut sleeve drives the nut to rotate, meanwhile, the nut drives the clamping jaws to move, driving is stable, the radial driving part is arranged on the outer circumferential side of the nut sleeve and connected with the inner circumferential side of the rotating sleeve in a matched mode, the axial structure of the nut sleeve is simplified, the length of the drill chuck is shortened, and the drill chuck is convenient to use. The drill chuck is short and light.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill chucks, and more specifically relates to a hand-tightened drill chuck. Background Art

[0002] Drill chucks are one of the main accessories in the power tool industry and machine tool industry. They are widely used in hand drills, drilling machines, etc. They are used together with electric drills to clamp the working heads of drilling tools. As the application scenarios of drill chucks continue to increase, the pursuit of short and light drill chucks has become a key research direction in the field.

[0003] The existing drill chuck usually has a driving part at the axial front end of the nut sleeve, and the spring piece is arranged on the nut sleeve. The rotational force of the drill chuck outer shell is transmitted through the driving part, so that the existing driving part arrangement increases the axial length of the nut sleeve, thereby increasing the overall length of the drill chuck. Utility Model Content

[0004] The utility model aims at solving the technical problems existing in the prior art and provides a hand-tight drill chuck.

[0005] In order to solve the above technical problems, the utility model includes a drill body, a nut, a nut sleeve, a clamping claw and a rotating sleeve. The nut sleeve is cooperatively connected with the nut, and the nut sleeve is arranged between the drill body and the rotating sleeve. A radial driving part is provided on the outer peripheral side of the nut sleeve, and the radial driving part is adaptively connected with the inner peripheral side of the rotating sleeve. The rotating sleeve drives the nut sleeve to rotate.

[0006] Preferably, the nut sleeve includes a nut connecting part and a drill body connecting part, the outer diameter of the nut connecting part is larger than the outer diameter of the drill body connecting part, the radial driving part is arranged on the outer peripheral side of the drill body connecting part, and the nut sleeve is linked and moves synchronously with the nut through the nut connecting part.

[0007] Preferably, the outer peripheral side of the nut is provided with external teeth, the inner peripheral side of the nut connecting portion is provided with internal teeth, and the outer peripheral side of the nut is meshingly connected with the nut sleeve.

[0008] Preferably, a positioning protrusion is provided on the outer peripheral surface of the nut sleeve, and the positioning protrusion is adaptably connected to the inner peripheral side of the rotating sleeve.

[0009] Preferably, the inner circumference of the rotating sleeve is provided with a radial driving groove adapted to be connected to the radial driving portion and a positioning protrusion matching portion adapted to be connected to the positioning protrusion.

[0010] Preferably, the radial driving groove is arranged above the positioning protrusion mating portion.

[0011] Preferably, a spring piece is connected to the nut sleeve, an axial protrusion is provided at the front end of the nut sleeve, and the spring piece is connected to the axial protrusion.

[0012] Preferably, the radial driving portion is provided with at least one driving protrusion located on the outer peripheral side of the nut sleeve.

[0013] Preferably, the nut sleeve is made of plastic.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model discloses a kind of novel structure is simple, and the rotary sleeve drives the nut sleeve to rotate, and the nut sleeve drives the nut to rotate, and the nut drives the clamping claw to move at the same time, which not only has stable driving, but also simplifies the axial structure of the nut sleeve, shortens the length of the drill chuck, and realizes the drill chuck to be short and light by arranging a radial driving part on the outer peripheral side of the nut sleeve, and the radial driving part is adaptively connected with the inner peripheral side of the rotary sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 It is a schematic diagram of the exploded structure of the drill chuck parts of the utility model;

[0018] Figure 2 The three-dimensional structure of the nut sleeve of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 3 The three-dimensional structure of the nut sleeve of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the drill chuck of the utility model;

[0021] Figure 5 It is a schematic diagram of the top view of the rotating sleeve of the utility model;

[0022] Figure 6 For this utility model Figure 5 Schematic diagram of the cross section of AA;

[0023] Figure 7 For this utility model Figure 6 Schematic cross-section of the middle BB;

[0024] Figure 8 For this utility model Figure 6 Schematic cross-section of CC.

[0025] Explanation of symbols in the figure:

[0026] 1. Drill body; 2. Nut; 3. Nut sleeve; 31. Radial drive portion; 32. Nut connecting portion; 33. Drill body connecting portion; 34. Positioning protrusion; 35. Axial protrusion; 4. Clamping jaw; 5. Rotating sleeve; 51. Radial drive groove; 52. Positioning protrusion matching portion; 53. Shrapnel matching portion; 6. Shrapnel. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] See also Figure 1 The utility model provides a hand-tight drill chuck, comprising a drill body 1, a nut 2, a nut sleeve 3, a clamping jaw 4 and a rotating sleeve 5. The nut sleeve 3 is matched and connected with the nut 2. The nut sleeve 3 is arranged between the drill body 1 and the rotating sleeve 5. A radial driving part 31 is provided on the outer peripheral side of the nut sleeve 3. The radial driving part 31 is adaptively connected with the inner peripheral side of the rotating sleeve 5. The rotating sleeve 5 drives the nut sleeve 3 to rotate.

[0029] The utility model has a simple structure. The rotating sleeve 5 drives the nut sleeve 3 to rotate. The nut sleeve 3 drives the nut 2 to rotate. At the same time, the nut 2 drives the clamping jaw 4 to move. Not only is the driving stable, but also a radial driving part 31 is provided on the outer peripheral side of the nut sleeve 3. The radial driving part 31 is adaptively connected with the inner peripheral side of the rotating sleeve 5, which simplifies the axial structure of the nut sleeve 3, shortens the length of the drill chuck, and realizes the drill chuck to be short and light.

[0030] In this embodiment, Figure 2 As shown, the nut sleeve 3 includes a nut connecting portion 32 located at the upper portion and a drill body connecting portion 33 located at the lower portion. The nut connecting portion 32 and the drill body connecting portion 33 of the nut sleeve 3 are an integrated structure, and the radial driving portion 31 is arranged on the outer peripheral side of the drill body connecting portion 33. The nut sleeve 3 is linked and synchronously moved with the nut 2 through the nut connecting portion 32.

[0031] Specifically, Figure 1 , Figure 2 , Figure 4 As shown, the nut connecting part 32 and the drill body connecting part 33 are both annular structures, and the outer diameter of the nut connecting part 32 is larger than the outer diameter of the drill body connecting part 33. The outer periphery of the nut connecting part 32 is a circular surface structure. The inner peripheral side of the nut connecting part 32 is provided with internal teeth, and the outer peripheral side of the nut 2 is provided with external teeth. The inner teeth and the outer teeth are matched and meshed with each other, so that the nut 2 and the nut sleeve 3 are relatively fixed and synchronously moved. The rotation of the nut sleeve 3 can drive the nut 2 to rotate, and the nut 2 then drives the clamping jaw 4 to move. The transmission of the drill chuck is stable and the assembly is convenient.

[0032] Furthermore, in this embodiment, if Figure 2 , Figure 3 As shown, the radial driving portion 31 is a driving protrusion arranged on the periphery of the drill body connecting portion 33. The driving protrusion is a square protrusion structure. The driving protrusion is arranged to protrude outward along the radial direction of the nut sleeve 3, thereby realizing the adaptive connection between the outer peripheral side of the nut sleeve 3 and the inner peripheral side of the rotating sleeve 5, thereby realizing the transmission of the driving force of the rotary sleeve of the drill chuck.

[0033] Specifically, the radial driving portion 31 includes two driving protrusions, which are relatively arranged on the outer peripheral side of the drill body connecting portion 33. In actual use, the shape and number of the driving protrusions arranged on the radial driving portion 31 can be adjusted according to needs. It is adapted to the inner structure of the rotating sleeve 5, and the matching connection between the nut sleeve 3 and the rotating sleeve 5 can be achieved.

[0034] The driving part arranged on the nut sleeve of the traditional drill chuck is located at the axial front end of the nut sleeve. The present embodiment changes its setting position and structure, arranges a radial driving part 31 on the outer peripheral side of the nut sleeve 3, shortens the axial length of the drill chuck through a circumferential driving method, and realizes a short and light structural design of the drill chuck.

[0035] In this embodiment, a positioning protrusion 34 is provided on the outer peripheral surface of the nut sleeve 3, and the positioning protrusion 34 is arranged on the outer peripheral side of the drill body connecting part 33 of the nut sleeve 3. The positioning protrusion 34 is adaptably connected to the inner peripheral side of the rotating sleeve 5, and in the axial direction of the nut sleeve 3, the positioning protrusion 34 is arranged directly below the radial driving part 31, and the radial extension dimension of the positioning protrusion 34 is smaller than the radial extension dimension of the driving protrusion of the radial driving part 31.

[0036] Specifically, two positioning protrusions 34 are provided on the outer periphery of the nut sleeve 3, and the two positioning protrusions 34 are relatively arranged on the outer peripheral side of the drill body connecting part 33, and cooperate with each other to achieve a matching connection with the inner peripheral side of the rotating sleeve 5, and through the connection between the positioning protrusions 34 and the rotating sleeve 5, the nut sleeve 3 and the rotating sleeve 5 can be locked and fixed, which effectively increases the unlocking torque of the drill chuck and ensures the locking reliability of the drill chuck.

[0037] Furthermore, Figure 5-Figure 8 As shown, the inner circumference of the rotating sleeve 5 is provided with a radial driving groove 51 adapted to be connected with the radial driving portion 31 and a positioning protrusion matching portion 52 adapted to be connected with the positioning protrusion 34 . In the axial direction, the radial driving groove 51 is arranged above the positioning protrusion matching portion 52 .

[0038] In this embodiment, the shape and number of the radial driving groove 51 are adapted to the radial driving portion 31, and the shape and number of the positioning protrusion matching portion 52 are adapted to the positioning protrusion 34. By setting the radial driving portion 31 and the positioning protrusion 34, a stable connection between the nut sleeve 3 and the rotating sleeve 5 is achieved.

[0039] Furthermore, if Figure 2 , Figure 7 As shown, an axial protrusion 35 is provided at the front end of the nut sleeve 3, and a spring piece 6 is connected to the nut sleeve 3. The spring piece 6 is connected to the axial protrusion 35 of the nut sleeve 3, and a protrusion structure is provided on the spring piece 6. The protrusion structure of the spring piece 6 corresponds to the axial protrusion 35 on the nut sleeve 3. The spring piece 6 is connected to the nut sleeve 3 and locked with the drill body 1 at the same time, and the inner circumferential side of the rotating sleeve 5 is provided with a spring piece matching portion 53 matched with the spring piece 6.

[0040] Furthermore, as a preferred embodiment of the present invention, the nut sleeve 3 is made of plastic, which not only facilitates the processing of the nut sleeve 3 but also saves materials and costs.

[0041] The utility model has a simple structure. The rotating sleeve 5 drives the nut sleeve 3 to rotate. The nut sleeve 3 drives the nut 2 to rotate while the nut 2 drives the clamping jaw 4 to move. Not only is the driving stable, but also the radial driving part 31 is arranged on the outer peripheral side of the nut sleeve 3. The radial driving part 31 is adapted to be connected with the inner peripheral side of the rotating sleeve 5, which simplifies the axial structure of the nut sleeve 3, shortens the length of the drill chuck, and realizes the short and light drill chuck; and the outer peripheral surface of the nut sleeve 3 is provided with a positioning protrusion 34. Through the matching connection of the positioning protrusion 34 and the rotating sleeve 5, the nut sleeve 3 and the rotating sleeve 5 can be locked and fixed, which effectively increases the unlocking torque of the drill chuck and ensures the locking reliability of the drill chuck. In addition, the nut sleeve 3 of the utility model is made of plastic material, which is not only convenient for the processing of the nut sleeve, but also saves materials and costs.

[0042] In the description of the present invention, it should be understood that terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A hand-tight drill chuck, comprising a drill body, a nut, a nut sleeve, a clamping jaw and a rotating sleeve, wherein the nut sleeve is connected with the nut, and the nut sleeve is arranged between the drill body and the rotating sleeve, characterized in that: A radial driving portion is provided on the outer circumference of the nut sleeve, and the radial driving portion is adaptably connected to the inner circumference of the rotating sleeve, and the rotating sleeve drives the nut sleeve to rotate.

2. A hand-tight drill chuck according to claim 1, characterized in that: The nut sleeve includes a nut connecting part and a drill body connecting part, the outer diameter of the nut connecting part is larger than the outer diameter of the drill body connecting part, the radial driving part is arranged on the outer peripheral side of the drill body connecting part, and the nut sleeve is linked and synchronously moved with the nut through the nut connecting part.

3. A hand-tight drill chuck according to claim 2, characterized in that: The outer peripheral side of the nut is provided with external teeth, the inner peripheral side of the nut connecting part is provided with internal teeth, and the outer peripheral side of the nut is meshed and connected with the nut sleeve.

4. A hand-tight drill chuck according to claim 1, characterized in that: The outer peripheral surface of the nut sleeve is provided with a positioning protrusion, and the positioning protrusion is adaptively connected with the inner peripheral side of the rotating sleeve.

5. A hand-tight drill chuck according to claim 4, characterized in that: The inner circumference of the rotating sleeve is provided with a radial driving groove adapted to be connected with the radial driving portion and a positioning protrusion matching portion adapted to be connected with the positioning protrusion.

6. A hand-tight drill chuck according to claim 5, characterized in that: The radial driving groove is arranged above the positioning protrusion matching portion.

7. A hand-tight drill chuck according to claim 1, characterized in that: The nut sleeve is connected with a spring piece, the front end of the nut sleeve is provided with an axial protrusion, and the spring piece is connected to the axial protrusion.

8. A hand-tight drill chuck according to any one of claims 1 to 7, characterized in that: The radial driving portion is provided with at least one driving protrusion located on the outer peripheral side of the nut sleeve.

9. A hand-tight drill chuck according to claim 8, characterized in that: The nut sleeve is made of plastic.

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