Quick change mechanism for drill chuck

Abstract

The utility model provides a drill chuck quick-changing mechanism, which relates to the technical field of electric drills and comprises a rear sleeve and a lock disc, and the rear sleeve is rotatably sleeved on the outer side of the lock disc. The rear sleeve is further provided with a tightening structure and a loosening structure, and the tightening structure and the loosening structure are both located on the side of the lock disc. The tightening structure comprises a first pin key, the loosening structure comprises a second pin key, and a first key groove and a second key groove which are matched with the first pin key and the second pin key are formed in the outer circle outline of the lock disc. The drill chuck quick-changing mechanism is reasonable in structure, the drill chuck can be quickly changed and assembled on the electric drill, the drill chuck can be assembled on the electric drill easily, the assembling efficiency is improved, time and labor are saved, the drill chuck is locked on the electric drill through the tightening structure after the drill chuck is assembled on a shaft of the electric drill, and the drill chuck can be quickly replaced and assembled on the electric drill. And the working reliability of the electric drill is ensured while the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of electric drills, and more specifically to a drill chuck quick-change mechanism. Background Art

[0002] The electric drill is the most commonly used electric tool. It is convenient, cheap, and easy to carry, and is well received by workers in the hardware and decoration industries. The electric drill includes an electric drill body and a drill chuck for installing a drill bit. The existing drill chuck is provided with a drill body, a front sleeve, a rear sleeve, a clamping jaw, and a nut. The rear sleeve is arranged at the rear end of the drill body; the nut and the clamping jaw are threadedly connected, and the front sleeve is connected to the nut through a nut sleeve arranged outside the nut. The front sleeve is driven to rotate by manual operation, and the front sleeve drives the nut to rotate so that the clamping jaw moves forward or backward, so that the clamping jaw clamps or loosens the drill bit, and the drill bit is installed, used, or disassembled on the drill chuck. The existing drill chuck is usually fixedly connected to the shaft of the electric drill by means of a threaded connection. The drill body of the drill chuck is provided with an internal thread, which cooperates with the external thread on the shaft of the electric drill. The drill chuck is threadedly connected and fixed to the shaft of the electric drill by twisting it in circles. The threaded connection method makes the assembly of the drill chuck on the shaft of the electric drill time-consuming and labor-intensive, and the assembly efficiency is low. Utility Model Content

[0003] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a drill chuck quick-change mechanism, including a rear sleeve and a locking disk, the rear sleeve can be rotatably placed on the outer side of the locking disk; the rear sleeve is also provided with a tightening structure and a loosening structure, and the tightening structure and the loosening structure are both located on the side of the locking disk; the tightening structure includes a No. 1 pin key, and the loosening structure includes a No. 2 pin key, and the outer circular contour of the locking disk is respectively provided with a No. 1 keyway and a No. 2 keyway that match the No. 1 pin key and the No. 2 pin key.

[0004] Furthermore, the front end of the No. 1 pin key is L-shaped, and the shape of the No. 1 keyway corresponds to the shape of the front end of the No. 1 pin key.

[0005] Furthermore, the tightening structure also includes a No. 1 spring and a No. 1 button, and the No. 1 spring is sleeved on the No. 1 pin key; the rear end of the No. 1 pin key is provided with an external thread section, and the rear end of the No. 1 pin key is threadedly connected to the No. 1 button.

[0006] Furthermore, the front end of the No. 2 pin key is trapezoidal, and the shape of the No. 2 keyway corresponds to the shape of the front end of the No. 2 pin key.

[0007] Furthermore, the release structure also includes a No. 2 spring and a No. 2 button, and the No. 2 spring is sleeved on the No. 2 pin key; the rear end of the No. 2 pin key is provided with an external thread section, and the rear end of the No. 2 pin key is threadedly connected to the No. 2 button.

[0008] Furthermore, there are two tightening structures, and the two tightening structures are centrally symmetrical about the center of the lock disk;

[0009] There is one loosening structure, which is arranged on the rear sleeve and located in the middle position between the two tightening structures.

[0010] Compared with the prior art, the drill chuck quick-change mechanism of the utility model has the following beneficial effects: the drill chuck quick-change mechanism of the utility model has a reasonable structure, can realize the rapid assembly and replacement of the drill chuck on the electric drill, the assembly operation of the drill chuck on the electric drill is easy, the assembly efficiency is improved, time and labor are saved, and after the drill chuck is assembled on the shaft of the electric drill, the drill chuck is locked on the electric drill through the tightening structure, which is convenient to use and ensures the reliability of the electric drill. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 It is a structural schematic diagram of the drill chuck quick-change mechanism of the utility model.

[0013] Figure 2 This is an exploded view of the drill chuck quick-change mechanism.

[0014] Figure 3 Schematic diagram of the loosened state of the drill chuck quick-change mechanism.

[0015] Figure 4 for Figure 3 Right view of .

[0016] Figure 5 for Figure 4 AA section view.

[0017] Figure 6 It is a schematic diagram of the tightening state of the drill chuck quick-change mechanism.

[0018] Figure 7 for Figure 6 Right view of .

[0019] Figure 8 for Figure 7 BB cross-sectional view.

[0020] Fig. 9 This is a schematic diagram of the state of the drill chuck quick-change mechanism at the moment of release.

[0021] Fig.10It is a schematic diagram of the structure of the lock disk.

[0022] Explanation of symbols in the figure:

[0023] 010, back cover; 020, lock plate; 030, pin key No. 1; 040, spring No. 1; 050, button No. 1; 060, pin key No. 2; 070, spring No. 2; 080, button No. 2; 021, keyway No. 1; 022, keyway No. 2. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention 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 invention and are not used to limit the present invention.

[0025] The drill chuck quick-change mechanism provided by the embodiment of the utility model is now described. Figure 1 , Figure 2 As shown, a drill chuck quick-change mechanism is used to realize the quick installation of the drill chuck on the shaft of the electric drill. The drill chuck quick-change mechanism includes a rear sleeve 010, which is fixedly arranged at the rear end of the drill body of the drill chuck. The drill chuck quick-change mechanism also includes a locking disk 020, which is fixedly arranged on the shaft of the electric drill, and the rear sleeve 010 is sleeved on the outer side of the locking disk 020, and the rear sleeve 010 is rotatably located on the outer side of the locking disk 020.

[0026] The rear cover 010 is also provided with a tightening structure and a loosening structure. The tightening structure is used to lock the rear cover 010 and the locking disk 020 to achieve a fixed connection between the rear cover 010 and the locking disk 020; the loosening structure is used to unlock the rear cover 010 and the locking disk 020 in a locked state.

[0027] The tightening structure and the loosening structure are both located on the side of the locking disk 020; there are two tightening structures, which are centrally symmetrical about the center of the locking disk 020; there is one loosening structure, which is arranged on the rear sleeve 010 and is located in the middle position between the two tightening structures.

[0028] The tightening structure includes a No. 1 pin key 030, and the loosening structure includes a No. 2 pin key 060. Fig.10 As shown, the outer circular contour of the lock plate 020 is provided with a No. 1 keyway 021 and a No. 2 keyway 022 which match with the No. 1 pin key 030 and the No. 2 pin key 060 respectively.

[0029] The front end of the No. 1 pin key 030 is L-shaped, and the shape of the No. 1 key slot 021 corresponds to the shape of the front end of the No. 1 pin key 030. The tightening structure also includes a No. 1 spring 040 and a No. 1 button 050. The No. 1 pin key 030 is sleeved with the No. 1 spring 040; the rear end of the No. 1 pin key 030 is provided with an external thread section, and the rear end of the No. 1 pin key 030 is threadedly connected with the No. 1 button 050.

[0030] The front end of the No. 2 pin key 060 is trapezoidal, and the shape of the No. 2 key slot 022 corresponds to the front end shape of the No. 2 pin key 060. The release structure also includes a No. 2 spring 070 and a No. 2 button 080. The No. 2 pin key 060 is sleeved with the No. 2 spring 070; the rear end of the No. 2 pin key 060 is provided with an external thread section, and the rear end of the No. 2 pin key 060 is threadedly connected with the No. 2 button 080.

[0031] The working method of the drill chuck quick-change mechanism of the utility model is as follows: Figure 3-Figure 5 As shown, the lock plate 020 is fixed on the shaft of the electric drill, and the rear sleeve 010 of the drill chuck is placed on the outside of the lock plate 020. The rear sleeve 010 can rotate relative to the lock plate 020. In the initial state, the tightening structure and the loosening structure are both in the open state, and the drill chuck quick-change mechanism of the utility model is in the loose state;

[0032] When the rear cover 010 and the lock plate 020 are to be quickly locked, the two No. 1 buttons 050 are manually pressed inward, and the two No. 1 buttons 050 respectively drive the two No. 1 pin keys 030 corresponding thereto inward, so that the No. 1 pin keys 030 enter the corresponding No. 1 key slots 021, and the rear cover 010 is manually driven to rotate, and the rotation of the rear cover 010 drives the two No. 1 pin keys 030 to move to the tightening position in the No. 1 key slots 021, and the No. 1 pin keys 030 are engaged with the corresponding No. 1 key slots 021 to tighten the lock plate 020. At this time, the No. 1 spring 040 is in a compressed state, as shown in FIG. Figure 6-Figure 8 As shown, the electric drill then drives the drill chuck to perform normal work;

[0033] When the drill chuck is to be quickly replaced, the No. 2 button 080 is manually pressed inward, and the No. 2 button 080 drives the corresponding No. 2 pin key 060 inward, so that the No. 2 pin key 060 enters the corresponding No. 2 key groove 022; in the process of the No. 2 pin key 060 entering the No. 2 key groove 022, the No. 2 pin key 060 and the inner side wall of the No. 2 key groove 022 act to drive the lock plate 020 to rotate in the opposite direction, and at this time, the No. 2 spring 070 is in a compressed state, such as Fig. 9As shown, the lock disk 020 rotates to make the No. 1 pin key 030 leave the tightening position in the No. 1 key groove 021, and the lock between the No. 1 pin key 030 and the No. 1 key groove 021 is released. Then, under the action of the elastic force of the No. 1 spring 040, the No. 1 button 050 pops outward, driving the No. 1 pin key 030 to move outward and exit the No. 1 key groove 021; the No. 2 button 080 is manually released, and under the action of the elastic force of the No. 2 spring 070, the No. 2 button 080 pops outward, driving the No. 2 pin key 060 to move outward and exit the No. 2 key groove 022, thereby achieving loosening. Then, the rear sleeve 010 is manually removed from the lock disk 020, so that the drill chuck can be quickly removed from the shaft of the electric drill, and the drill chuck can be quickly replaced. The above steps are repeated to achieve the assembly of the new drill chuck on the shaft of the electric drill.

[0034] The drill chuck quick-change mechanism of the utility model has a reasonable structure, can realize the rapid replacement and assembly of the drill chuck on the electric drill, the assembly operation of the drill chuck on the electric drill is easy, the assembly efficiency is improved, time and labor are saved, and the drill chuck is locked on the electric drill through the tightening structure after being assembled on the shaft of the electric drill, which is convenient to use and ensures the reliability of the electric drill.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drill chuck quick-change mechanism, comprising a rear sleeve, Features: It also includes a lock disk, and the rear sleeve can be rotatably placed on the outer side of the lock disk; the rear sleeve is also provided with a tightening structure and a loosening structure, and the tightening structure and the loosening structure are both located on the side of the lock disk; the tightening structure includes a No. 1 pin key, and the loosening structure includes a No. 2 pin key, and the outer circular contour of the lock disk is respectively provided with a No. 1 keyway and a No. 2 keyway that match the No. 1 pin key and the No. 2 pin key.

2. The drill chuck quick-change mechanism according to claim 1, Features: The front end of the No. 1 pin key is L-shaped, and the shape of the No. 1 keyway corresponds to the shape of the front end of the No. 1 pin key.

3. The drill chuck quick-change mechanism according to claim 2, Features: The tightening structure also includes a No. 1 spring and a No. 1 button. The No. 1 spring is sleeved on the No. 1 pin key. The rear end of the No. 1 pin key is provided with an external thread section, and the rear end of the No. 1 pin key is threadedly connected to the No. 1 button.

4. The drill chuck quick-change mechanism according to claim 3, Features: The front end of the No. 2 pin key is trapezoidal, and the shape of the No. 2 keyway corresponds to the shape of the front end of the No. 2 pin key.

5. The drill chuck quick-change mechanism according to claim 4, Features: The release structure also includes a No. 2 spring and a No. 2 button. The No. 2 spring is sleeved on the No. 2 pin key. The rear end of the No. 2 pin key is provided with an external thread section, and the rear end of the No. 2 pin key is threadedly connected to the No. 2 button.

6. The drill chuck quick-change mechanism according to claim 5, Features: There are two tightening structures, and the two tightening structures are centrally symmetrical about the center of the locking disk; There is one loosening structure, which is arranged on the rear sleeve and located in the middle position between the two tightening structures.

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