Locking anti-loose drill chuck

Abstract

The utility model provides a locking anti-loosening drill chuck, and relates to the technical field of drill chucks. The locking anti-loose drill chuck comprises a drill body, a clamping jaw, a nut, a nut sleeve, a front sleeve and a rear sleeve, the clamping jaw is arranged in an inclined hole in the drill body, the nut is in threaded connection with the clamping jaw, the nut sleeve is arranged on the outer side of the nut, and the front sleeve is arranged on the outer side of the nut sleeve; the rear sleeve is arranged on the rear portion of the drill body, and a fixing device is arranged on the inner side of the rear sleeve and arranged on the drill body in a sleeving mode. An elastic piece is arranged between the rear end of the fixing device and the rear sleeve; the locking anti-loose drill chuck is provided with the movable fixing device, the upper key pin is separated from the empty groove of the front sleeve by pulling the fixing device backwards, the front sleeve is manually driven to rotate for unlocking, after a drill bit is replaced, the front sleeve is manually driven to rotate to enable the drill chuck to clamp the drill bit, the fixing device is manually loosened, and locking is achieved. When the drill chuck is locked, the fixing device moves forwards under the action of the elastic force of the elastic piece, the upper key pin is matched with the empty groove, the drill chuck is locked, and the purpose of locking and loosening prevention is achieved.

Description

Technical Field

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

[0002] The existing drill chuck is provided with a drill body, a clamping jaw, and a nut, and the nut and the clamping jaw are threadedly connected; the drill chuck is provided with a front sleeve, and the front sleeve is connected to the nut through a nut sleeve sleeved on the outside of 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. During the drilling and impact operation of the drill chuck, due to the large vibration of the electric drill, the nut is easily loosened due to the vibration, resulting in the clamping jaw being unable to clamp the drill bit, and the drill bit falls from the drill chuck, which seriously affects the normal use of the electric drill and has poor safety. Utility Model Content

[0003] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a locking and anti-loosening drill chuck, including a drill body, a clamping jaw, a nut, a nut sleeve, a front sleeve, and a rear sleeve, the clamping jaw is arranged in an inclined hole on the drill body, the nut is threadedly connected with the clamping jaw, the nut sleeve is arranged on the outside of the nut, and the front sleeve is arranged on the outside of the nut sleeve; the rear sleeve is arranged at the rear part of the drill body, a fixing device is arranged on the inner side of the rear sleeve, and the fixing device is sleeved on the drill body; an elastic member is arranged between the rear end of the fixing device and the rear sleeve.

[0004] Furthermore, an upper key pin is arranged on the top surface of the fixing device, and a No. 1 accommodating hole is arranged on the bottom surface of the fixing device; an inner key pin is arranged on the inner ring side wall of the bottom of the fixing device.

[0005] Furthermore, the lower end of the front sleeve is provided with a hollow groove matching with the upper key pin.

[0006] Furthermore, a through groove matching with the inner key pin is arranged on the lower outer side wall of the drill body.

[0007] Furthermore, the bottom surface of the rear cover is provided with a No. 2 accommodating hole corresponding to the No. 1 accommodating hole; the No. 1 accommodating hole and the No. 2 accommodating hole cooperate to form an elastic member accommodating area, and the elastic member is placed in the elastic member accommodating area.

[0008] Compared with the prior art, the locking and anti-loosening drill chuck of the utility model has the following beneficial effects: the utility model provides a locking and anti-loosening drill chuck with reasonable structure, easy assembly, stable performance, reliable operation and convenient use, which can realize the locking and anti-loosening function of the drill chuck, and the locking and anti-loosening drill chuck is provided with a movable fixing device, which can be pulled backward to unlock the drill chuck and manually loosen the fixing device to lock the drill chuck, so as to achieve the purpose of locking and anti-loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] 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.

[0010] Figure 1 The utility model is a structural schematic diagram of a locking and anti-loosening drill chuck.

[0011] Figure 2 A top view of the locking drill chuck.

[0012] Figure 3 for Figure 2 AA section view.

[0013] Figure 4 A schematic diagram of the structure of the fixing device.

[0014] Figure 5 A schematic diagram of the structure of the fixing device.

[0015] Figure 6 This is a schematic diagram of the structure of the front set.

[0016] Figure 7 Schematic diagram of the structure of the drill body.

[0017] Figure 8 This is a bottom view of the drill body.

[0018] Fig. 9 This is an exploded view of the locking anti-loosening drill chuck.

[0019] Fig.10 It is a schematic diagram of the structure of the elastic member.

[0020] Fig.11 It is a schematic diagram of the structure of the rear set.

[0021] Explanation of symbols in the figure:

[0022] 010, drill body; 020, rear sleeve; 030, nut; 040, clamping claw; 050, nut sleeve; 060, steel washer; 070, bearing; 080, retaining spring; 090, front sleeve; 0100, spring piece; 0110, fixing device; 0120, elastic member; 011, through slot; 091, empty slot; 0111, upper key pin; 0112, inner key pin; 0113, No. 1 receiving hole; 021, No. 2 receiving hole. DETAILED DESCRIPTION

[0023] 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.

[0024] The locking anti-loosening drill chuck provided by the embodiment of the utility model is now described. Figure 1-Figure 3 As shown, a locking anti-loosening drill chuck includes a drill body 010, a clamping jaw 040, a nut 030, a nut sleeve 050, a front sleeve 090, and a rear sleeve 020. There are three clamping jaws 040, and the three clamping jaws are respectively arranged in three equally divided inclined holes of the drill body 010. The nut 030 is threadedly connected with the clamping jaw 040, the nut sleeve 050 is arranged on the outside of the nut 030, and the front sleeve 090 is arranged on the outside of the nut sleeve 050. The rear sleeve 020 is arranged at the rear of the drill body 010, and a fixing device 0110 is arranged on the inner side of the rear sleeve 020. The fixing device 0110 is sleeved on the drill body 010, and an elastic member 0120 is arranged between the rear end of the fixing device 0110 and the rear sleeve 020. Preferably, the elastic member 0120 can be a spring, and the number of the elastic members 0120 is three. The three elastic members are arranged between the fixing device 0110 and the rear sleeve 020 at equal intervals with the center of the fixing device 0110 as the center.

[0025] like Figure 4 , Figure 5 As shown, an upper key pin 0111 is provided on the top surface of the fixing device 0110, and a No. 1 receiving hole 0113 is provided on the bottom surface of the fixing device 0110, and the No. 1 receiving hole 0113 is used to accommodate the elastic member 0120; an inner key pin 0112 is provided on the inner ring side wall of the bottom of the fixing device 0110.

[0026] like Figure 6 As shown, the lower end of the front sleeve 090 is provided with an empty slot 091 that matches the upper key pin 0111. When the upper key pin 0111 of the fixing device 0110 is inserted into the empty slot 091 of the front sleeve 090, the rotation of the front sleeve 090 is restricted, and the front sleeve 090 is locked, so that the drill chuck is locked and prevented from loosening.

[0027] like Figure 7 , Figure 8 As shown, a through slot 011 cooperating with the inner key pin 0112 is provided on the lower outer side wall of the drill body 010 . The inner key pin 0112 cooperates with the through slot 011 to play a guiding role when the fixing device 0110 moves forward and backward along the drill body 010 .

[0028] like Fig.10 , Fig.11As shown, the bottom surface of the rear sleeve 020 is provided with a No. 2 accommodating hole 021 corresponding to the No. 1 accommodating hole 0113; the No. 1 accommodating hole 0113 and the No. 2 accommodating hole 021 cooperate to form an elastic member accommodating area, and the elastic member 0120 is placed in the elastic member accommodating area. The setting of the elastic member 0120 allows the drill chuck to be unlocked when the fixing device 0110 moves backward to compress the elastic member 0120; the fixing device 0110 is manually released, and the fixing device 0110 is driven to move forward under the elastic force of the elastic member 0120 to achieve the locking of the drill chuck.

[0029] The working method of the locking and anti-loosening drill chuck of the utility model is as follows: when the drill chuck is in the locking and anti-loosening state, the upper key pin 0111 of the fixing device 0110 is clamped in the empty slot 091 of the front sleeve 090, and the fixing device 0110 and the front sleeve 090 are pressed against each other by the elastic member 0120, so that the front sleeve 090 will not rotate due to vibration during the operation of the electric drill through the cooperation of the upper key pin 0111 and the empty slot 091, thereby ensuring the reliability of the threaded connection between the nut 030 and the clamping jaw 040, ensuring that the clamping jaw 040 can clamp the drill bit, ensuring the normal operation of the electric drill, and improving the safety of the use of the electric drill; when the drill chuck is to be unlocked, the fixing device 0110 is manually pulled backwards, and the inner key pin 0112 cooperates with the through slot 011 to guide the fixing device 0110 to move backwards along the drill body 010, thereby fixing the drill bit. After the fixing device 0110 moves backward, the upper key pin 0111 of the fixing device 0110 disengages from the empty slot 091 of the front sleeve 090, releasing the lock of the front sleeve 090, and then the front sleeve 090 is manually driven to rotate, thereby driving the nut 030 to rotate to realize the backward movement of the clamping jaw 040, and the clamping jaw 040 releases the drill bit. At this time, the drill bit can be replaced. After replacing the drill bit, the front sleeve 090 is manually rotated in the opposite direction, thereby driving the nut 030 to rotate in the opposite direction to realize the forward movement of the clamping jaw 040, and the clamping jaw 040 clamps the drill bit. Then the fixing device 0110 is manually released, and under the elastic force of the elastic member 0120, the fixing device 0110 moves forward along the drill body 010, and the upper key pin 0111 of the fixing device 0110 is inserted into the empty slot 091 of the front sleeve 090, and the drill chuck is locked to achieve the purpose of locking and preventing loosening.

[0030] The utility model provides a locking and anti-loosening drill chuck which has a reasonable structure, is easy to assemble, has stable performance, is reliable in operation and is easy to use. The locking and anti-loosening function of the drill chuck can be realized. The locking and anti-loosening function of the drill chuck is provided with a movable fixing device 0110. By pulling the fixing device 0110 backward, an upper key pin 0111 is disengaged from an empty slot 091 of a front sleeve 090. At this time, the front sleeve 090 can be manually driven to rotate for unlocking. After replacing the drill bit, the front sleeve 090 is manually driven to rotate so that the drill chuck clamps the drill bit. The fixing device 0110 is manually released. Under the action of the elastic force of the elastic member 0120, the fixing device 0110 moves forward so that its upper key pin 0111 cooperates with the empty slot 091 of the front sleeve 090, thereby locking the drill chuck and achieving the purpose of locking and anti-loosening.

[0031] 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 locking anti-loosening drill chuck, comprising a drill body, a clamping jaw, a nut, a nut sleeve, a front sleeve, and a rear sleeve, wherein the clamping jaw is arranged in an inclined hole on the drill body, the nut is threadedly connected to the clamping jaw, the nut sleeve is arranged on the outside of the nut, the front sleeve is arranged on the outside of the nut sleeve; the rear sleeve is arranged at the rear of the drill body, Features: A fixing device is arranged on the inner side of the rear sleeve, and the fixing device is sleeved on the drill body; an elastic member is arranged between the rear end of the fixing device and the rear sleeve.

2. The locking anti-loosening drill chuck according to claim 1, Features: An upper key pin is arranged on the top surface of the fixing device, and a No. 1 accommodating hole is arranged on the bottom surface of the fixing device; an inner key pin is arranged on the inner ring side wall of the bottom of the fixing device.

3. The locking anti-loosening drill chuck according to claim 2, Features: The lower end of the front sleeve is provided with a hollow groove matched with the upper key pin.

4. The locking anti-loosening drill chuck according to claim 3, Features: A through groove matched with the inner key pin is arranged on the lower outer side wall of the drill body.

5. The locking anti-loosening drill chuck according to claim 4, Features: The bottom surface of the rear cover is provided with a No. 2 accommodating hole corresponding to the No. 1 accommodating hole; the No. 1 accommodating hole and the No. 2 accommodating hole cooperate to form an elastic member accommodating area, and the elastic member is placed in the elastic member accommodating area.

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