Electric hand drill auxiliary device for controlling depth of counter bore

Abstract

The utility model discloses an electric hand drill auxiliary device used for controlling the depth of a counter bore, and relates to the technical field of electric hand drills, the electric hand drill auxiliary device comprises an inner ring and an outer cylinder sleeved outside the inner ring, the inner ring comprises a limiting part and at least two sliding grooves, the limiting part is located on the inner wall of the inner ring and is fixed with the inner ring into a whole, and the sliding grooves are formed in the outer cylinder. The limiting part abuts against a rod body of a drill rod, the sliding groove is located in the side, away from the limiting part, of the inner ring, and the sliding groove penetrates through the inner side and the outer side of the inner ring. The outer barrel comprises locking assemblies, each sliding groove corresponds to one locking assembly, each locking assembly comprises a threaded hole and a locking screw matched with the threaded hole, and the locking screws penetrate through the threaded holes and the corresponding sliding grooves and abut against the rod body of the drill rod. The counter bore depth can be conveniently adjusted, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of hand electric drills, in particular to a hand electric drill auxiliary device for controlling the depth of a countersink. Background Art

[0002] When fixing the door product panel, workers need to use a hand drill to drill and sink, and then fix it with countersunk screws. However, using a hand drill to drill countersunk holes currently has the following disadvantages:

[0003] 1. It is easy to punch through the panel when drilling countersunk holes, and after installing the screws, it cannot fix the panel;

[0004] 2. Drilling countersinks to a specified depth requires high standards for workers and requires certain operating experience.

[0005] The countersink limit devices currently available on the market are usually large in size and take up space, making it impossible for a hand drill to drill a countersink in a small area; at the same time, they are difficult to fix on a drill rod with a spiral line. Utility Model Content

[0006] The utility model aims to provide a hand-held electric drill auxiliary device for controlling the depth of a countersink, so as to solve the problems existing in the background technology.

[0007] The purpose of this utility model is achieved through the following technical solutions:

[0008] A hand-held electric drill auxiliary device for controlling the depth of a countersink hole, which is sleeved on a drill rod of a hand-held electric drill, and comprises an inner ring and an outer cylinder sleeved outside the inner ring, wherein the inner ring comprises a limit portion and at least two sliding grooves, wherein the limit portion is located on the inner wall of the inner ring and is fixed to the inner ring as a whole, wherein the limit portion abuts against the rod body of the drill rod, wherein the sliding groove is located on a side of the inner ring away from the limit portion, and wherein the sliding groove passes through both the inner and outer sides of the inner ring;

[0009] The outer cylinder includes a locking assembly, each of the sliding grooves corresponds to a locking assembly, the locking assembly includes a threaded hole and a locking screw matched with the threaded hole, the locking screw passes through the threaded hole and the corresponding sliding groove and abuts against the rod body of the drill rod.

[0010] Furthermore, the limiting portion is a V-shaped structure, and the space formed by the limiting portion and the inner ring of the inner ring is used for inserting the drill rod.

[0011] Furthermore, the plurality of sliding grooves are in the same horizontal plane or are not in the same horizontal plane.

[0012] Furthermore, the cross-section of the outer cylinder is an H-shaped structure, and the outer cylinder includes a bottom plate and a cylinder body, the bottom plate is located on one side inside the cylinder body, a through hole for the drill rod to pass through is provided in the middle of the bottom plate, and the bottom plate divides the outer cylinder into an upper chamber and a lower chamber, the depth of the upper chamber is greater than the depth of the lower chamber, the inner ring is located in the upper chamber, and the locking assembly is also located on the outer wall of the upper chamber.

[0013] Furthermore, the limiting portion is provided with two symmetrically arranged connecting bolts, and the base plate is provided with connecting grooves at positions corresponding to the connecting bolts, and the connecting grooves are located outside the through holes of the base plate. The two connecting grooves are symmetrically arranged, and the groove widths of the connecting grooves are adapted to the screw diameters of the connecting bolts. The connecting bolts pass through the limiting portion and the base plate and extend into the lower chamber, and the lower chamber is provided with nuts that match the connecting bolts.

[0014] The beneficial effects of the utility model are:

[0015] 1) Conveniently adjust the countersink depth, simple structure, easy to operate, and can adapt to drill rods of different rod diameters.

[0016] 2) The debris drilled out by the drill rod can be limited by the space formed by the lower chamber, preventing the debris from flying around and playing a certain collection role. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a cross-sectional view of a hand-held electric drill auxiliary device for controlling the depth of a countersink installed on a drill rod according to the utility model;

[0018] Figure 2 This is a working schematic diagram of a hand-held electric drill auxiliary device for controlling the depth of a countersink hole installed on a drill rod according to the utility model;

[0019] Figure 3 It is a schematic diagram of the inner ring in the utility model;

[0020] Figure 4 It is a top view of the outer cylinder in the utility model;

[0021] Figure 5 It is a side view of the outer cylinder in the utility model;

[0022] In the figure, 1-drill rod, 101-outer wall, 102-inner groove, 2-inner ring, 201-limiting part, 202-sliding groove, 203-connecting bolt, 3-outer cylinder, 301-locking screw, 302-threaded hole, 303-bottom plate, 304-upper chamber, 305-lower chamber, 306-connecting groove. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0025] like Figure 1-Figure 5 As shown, a hand-held electric drill auxiliary device for controlling the depth of a countersink is sleeved on a drill rod 1 of a hand-held electric drill, and comprises an inner ring 2 and an outer cylinder 3 sleeved outside the inner ring 2, wherein the inner ring 2 comprises a limiting portion 201 and at least two sliding grooves 202, wherein the limiting portion 201 is located on the inner wall of the inner ring 2 and is fixed to the inner ring 2 as a whole, wherein the limiting portion 201 abuts against the shaft of the drill rod 1, wherein the sliding groove 202 is located on a side of the inner ring 2 away from the limiting portion 201, and wherein the sliding groove 202 passes through the inner and outer sides of the inner ring 2;

[0026] The outer cylinder 3 includes a locking assembly, each sliding groove 202 corresponds to a locking assembly, and the locking assembly includes a threaded hole 302 and a locking screw 301 matching the threaded hole 302. The locking screw 301 passes through the threaded hole 302 and the corresponding sliding groove 202 and abuts against the shaft of the drill rod 1.

[0027] Through the above technical solution, the inner ring 2 and the outer cylinder 3 are sleeved on the drill rod 1, the position of the outer cylinder 3 on the drill rod 1 is adjusted, and the drill rod 1 is placed in the limit part 201 and is close to the limit part 201. The limit part 201 is used to ensure that the end face of the inner ring 2 is perpendicular to the center line of the drill rod 1, and the locking screw 301 is turned to lock the limit part 201 and the drill rod 1. At this time, the auxiliary device is locked with the drill rod 1 of the hand drill. The distance from the end of the drill rod 1 to the bottom of the outer cylinder 3 is the depth of the countersink that needs to be drilled. Start the hand drill. When the bottom surface of the outer cylinder 3 contacts the door panel, it means that the countersink reaches the specified depth, and it also ensures that the axis of the countersink is perpendicular to the panel.

[0028] Furthermore, the limiting portion 201 is a V-shaped structure, and the space formed by the limiting portion 201 and the inner ring of the inner ring 2 is used for inserting the drill rod 1.

[0029] Through the above technical solution, the limiting part 201 is a V-shaped structure, which facilitates the close positioning of the drill rod 1 and the limiting part 201. Since the drill rod 1 is a spiral structure, such as Figure 1As shown, the drill rod 1 includes an outer wall 101 and an inner groove 102. The inner groove 102 on one side is aligned with the center of the limiting portion 201. The outer walls 101 on both sides of the inner groove 102 abut against the limiting portion 201, which can adapt to drill rods 1 with different rod diameters.

[0030] Furthermore, the plurality of sliding grooves 202 are located in the same horizontal plane or are not located in the same horizontal plane.

[0031] Through the above technical solution, the inner ring 2 can rotate in the outer tube 3, and the position of the limit part 201 abutting against the inner groove 102 can be adjusted by rotating the inner ring 2. Since the locking screw 301 is locked through the threaded hole 302 on the outer tube 3 and extends into the inner ring 2, the sliding groove 202 can be used to avoid interference between the inner ring 2 and the locking screw 301 during the rotation of the inner ring 2. The groove width of the sliding groove 202 is adapted to the screw diameter of the locking screw 301.

[0032] Meanwhile, in another embodiment, the locking screw 301 is initially positioned, and the outer wall 101 is ensured to be in contact with the end of the locking screw 301 by rotating the inner ring 2, so as to prevent the locking screw 301 from extending into the inner groove 102 and affecting the locking. At the same time, the locking effect can be improved by using multiple locking screws 301, and multiple sliding grooves 202 correspond to the locking screws 301, so as to facilitate the rotation of the inner ring 2. When individual locking screws 301 cannot be in contact with the outer wall 101 of the drill rod 1, the locking screw 301 can be temporarily removed and locked by another locking screw 301, so as to ensure that at least two locking screws 301 can be in contact with the outer wall 101.

[0033] At the same time, the locking screws 301 may not be on the same horizontal plane as the inner ring 2, that is, the corresponding sliding grooves 202 are not on the same horizontal plane. The locking screws 301 are arranged in a staggered manner to adapt to the spiral structure of the drill rod 1, so as to improve the locking effect on the outer wall 101.

[0034] Furthermore, the cross-section of the outer cylinder 3 is an H-shaped structure, and the outer cylinder 3 includes a bottom plate 303 and a cylinder body. The bottom plate 303 is located on one side of the cylinder body. A through hole for the drill rod 1 to pass through is provided in the middle of the bottom plate 303. The bottom plate 303 divides the outer cylinder 3 into an upper chamber 304 and a lower chamber 305. The depth of the upper chamber 304 is greater than the depth of the lower chamber 305. The inner ring is located in the upper chamber 304, and the locking assembly is also located on the outer wall 101 of the upper chamber 304.

[0035] Furthermore, the limiting portion 201 is provided with two symmetrically arranged connecting bolts 203, and the base plate 303 is provided with a connecting groove 306 at a position corresponding to the connecting bolt 203, and the connecting groove 306 is located outside the through hole of the base plate 303, and the two connecting grooves 306 are symmetrically arranged, and the groove width of the connecting groove 306 is adapted to the screw diameter of the connecting bolt 203, and the connecting bolt 203 passes through the limiting portion and the base plate 303 and extends into the lower chamber 305, and the lower chamber 305 is provided with a nut matching the connecting bolt 203.

[0036] Through the above technical solution, the outer cylinder 3 is divided into an upper chamber 304 for placing the inner ring 2 and a lower chamber 305 for locking the connecting bolt 203 by the bottom plate 303. When the inner ring 2 is adjusted, the connecting bolt 203 is inserted into the limiting portion 201, and the nut of the connecting bolt 203 is left outside the limiting portion 201. One end of the connecting bolt 203 passes through the limiting portion 201 and the bottom plate 303 and extends into the lower chamber 305. The connecting bolt 203 will not extend out of the lower chamber 305. The connecting bolt 203 is locked by the nut, and then the inner ring 2 and the outer cylinder 3 are fixed together, which is convenient for the inner ring 2 and the outer cylinder 3 to rotate together during the subsequent rotation of the drill pipe 1. The connection groove 306 is provided to facilitate the interference of the connecting bolt 203 with the bottom plate after the inner ring 2 rotates.

[0037] At the same time, the debris drilled out by the drill rod 1 can be limited by the space formed by the lower chamber 305, so as to prevent the debris from flying around and play a certain collection role.

[0038] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be protected by the claims attached to the utility model.

Claims

1. A hand-held electric drill auxiliary device for controlling the depth of a countersink, which is sleeved on a drill rod (1) of a hand-held electric drill. Features: The drill bit (2) comprises an inner ring (2) and an outer cylinder (3) sleeved outside the inner ring (2), the inner ring (2) comprising a limiting portion (201) and at least two sliding grooves (202), the limiting portion (201) being located on the inner wall of the inner ring (2) and being fixed to the inner ring (2) as a whole, the limiting portion (201) being in contact with the rod body of the drill rod (1), the sliding groove (202) being located on a side of the inner ring (2) away from the limiting portion (201), and the sliding groove (202) passing through the inner and outer sides of the inner ring (2); The outer cylinder (3) comprises a locking assembly, each of the sliding grooves (202) corresponds to one of the locking assemblies, the locking assembly comprising a threaded hole (302) and a locking screw (301) matched with the threaded hole (302), the locking screw (301) passing through the threaded hole (302) and the corresponding sliding groove (202) and abutting against the shaft of the drill rod (1).

2. The hand-operated electric drill auxiliary device for controlling the countersink depth according to claim 1, Features: The limiting portion (201) is a V-shaped structure, and the space formed by the limiting portion (201) and the inner ring of the inner ring (2) is used for inserting the drill rod (1).

3. The hand-operated electric drill auxiliary device for controlling the countersink depth according to claim 1, Features: The plurality of sliding grooves (202) are located in the same horizontal plane or are not located in the same horizontal plane.

4. The hand-operated electric drill auxiliary device for controlling the countersink depth according to claim 1, Features: The cross section of the outer cylinder (3) is an H-shaped structure. The outer cylinder (3) comprises a bottom plate (303) and a cylinder body. The bottom plate (303) is located at one side of the cylinder body. A through hole for the drill rod (1) to pass through is provided in the middle of the bottom plate (303). The bottom plate (303) divides the outer cylinder (3) into an upper chamber (304) and a lower chamber (305). The depth of the upper chamber (304) is greater than the depth of the lower chamber (305). The inner ring (2) is located in the upper chamber (304). The locking assembly is also located on the outer wall (101) of the upper chamber (304).

5. The hand-operated electric drill auxiliary device for controlling the countersink depth according to claim 4, Features: The limiting portion (201) is provided with two symmetrically arranged connecting bolts (203); the bottom plate (303) is provided with connecting grooves (306) at positions corresponding to the connecting bolts (203); the connecting grooves (306) are located outside the through holes of the bottom plate (303); the two connecting grooves (306) are symmetrically arranged; the groove widths of the connecting grooves (306) are matched with the screw diameters of the connecting bolts (203); the connecting bolts (203) pass through the limiting portion (201) and the bottom plate (303) and extend into the lower chamber (305); the lower chamber (305) is provided with nuts matched with the connecting bolts (203).

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