Square hole drill suitable for electric hammer

Abstract

A square hole drill suitable for an electric hammer comprises an electric hammer handle, a shockproof directional sleeve, a contraction guide sliding sleeve, a drill sleeve and a drill core, a directional round pipe arranged on the shockproof directional sleeve is sleeved on a cylindrical pipe on the upper portion of the drill sleeve, a melt nut is arranged on the directional round pipe, a positioning screw hole communicated with the melt nut on the directional round pipe is arranged on the cylindrical pipe, and the drill core is arranged in the positioning screw hole. A bolt is inserted into the melt nut of the directional circular tube and the positioning screw hole; the drill core is arranged in the drill bushing, an internal thread arranged in the electric hammer handle is connected with an external thread arranged on the drill core, and a locking sleeve inserted into the electric hammer is arranged at the upper part of the electric hammer handle; a guide sliding sleeve arranged on the contraction guide sliding sleeve is sleeved with a depth cylinder on the side edge of the electric hammer, meanwhile, a bolt is inserted into an arc-shaped through hole formed in the contraction guide sliding sleeve and a melt nut arranged on the shockproof directional sleeve, and after the position of the arc-shaped through hole is moved, the melt nut on the shockproof directional sleeve is locked through the bolt. The problem of adjustment of different distances between the side edge depth columns of the electric hammers and the drill bushings due to the electric hammers of different sizes can be solved.

Description

Technical Field

[0001] This utility model relates to the field of woodworking machinery technology, and in particular to a square hole drill suitable for use with electric hammers. Background Technology

[0002] Currently, square hole drills used for drilling square holes consist of two parts: a drill core and a drill bushing. During installation, the drill core is placed inside the drill bushing, with the upper round shank of the drill core exposed on the cylindrical tube of the drill bushing. The three-jaw chuck of a bench drill or electric drill is used to lock the upper round shank of the drill core. A special bracket is also required to connect the electric drill and the drill bushing. The lower end of the special bracket is locked to the upper cylindrical tube of the drill bushing, and the upper end of the special bracket is locked to the outside of the bearing of the bench drill or the bearing of the electric drill.

[0003] During operation, the largest circular cutter at the front of the drill core inside the square straight cutting edge of the drill bushing rotates to extract wood. Then, the power is transmitted to the drill bushing of the square hole drill by the user's physical exertion on a specially designed support. This, in turn, drives the square straight cutting edge at the front of the drill bushing to cut and press the wood at the four corners outside the round hole, shaping the edges of the corner pieces into four straight lines to create a square mortise. The larger the square straight cutting edge at the front of the drill bushing, the larger the area of ​​the four outer corners of the round hole, resulting in greater pressure resistance, higher physical labor intensity, and lower work efficiency. Furthermore, the working depth of the drill bushing is not intuitive, lacking markings, making it easy to misjudge the hole depth. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a square hole drill suitable for use with electric hammers, so as to solve the problems in the background art mentioned above.

[0005] The technical problem solved by this utility model is achieved by the following technical solution:

[0006] A square hole drill suitable for electric hammer use, comprising an electric hammer handle, a shockproof directional sleeve, a contraction guide sleeve, a drill sleeve and a drill core, wherein the drill core is placed in the drill sleeve, the shockproof directional sleeve comprises a directional circular tube and a shockproof slot, the shockproof directional sleeve is sleeved on the cylindrical tube at the upper part of the drill sleeve through the directional circular tube, a fusion screw cap is arranged on the directional circular tube, a positioning wire hole is arranged on the cylindrical tube and penetrates the fusion screw cap on the directional circular tube, and a bolt is inserted into the positioning wire hole and the fusion screw cap on the shockproof slot for fastening the shockproof directional sleeve and the cylindrical tube, the shockproof slot is fused with the outside of the directional circular tube, and a fusion screw cap is arranged on the back side of the slot in the shockproof slot; the contraction guide sleeve comprises a guide ring for inserting into the depth column on the side of the electric hammer, a straight plate insertion strip and an arc-shaped through hole, the straight plate insertion strip is inserted into the shockproof slot, the guide ring is fused with the straight plate insertion strip, the straight plate insertion strip is internally provided with an arc-shaped through hole for inserting a bolt, and the bolt is locked in the fusion screw cap on the back side of the slot in the shockproof slot through the arc-shaped through hole; a locking sleeve for connecting the electric hammer is arranged on the upper part of the electric hammer handle, an internal thread is arranged in the electric hammer handle, and an external thread for thread connection with the internal thread is arranged on the upper part of the drill core; a scale is arranged on the lower part of the drill sleeve, and a four-square straight edge is arranged on the drill sleeve, so that incorrect visual positioning can be effectively avoided.

[0007] Further, the upper part of the electric hammer handle is a square handle or a round handle, a small-area internal thread is arranged in the center of the electric hammer handle and connected with the external thread on the upper part of the drill core, the depth of the internal thread is equal to the length of the external thread, a small clearance is arranged between the lower part of the electric hammer handle and the cylindrical tube on the upper part of the drill sleeve, and an entity area is divided from the outer circle of the internal thread in the center of the electric hammer handle, the diameter of the entity area is greater than or equal to the diameter of the cylindrical tube on the upper part of the drill sleeve, and the two separated objects, the drill core and the drill sleeve, are simultaneously worked, the internal thread of the electric hammer handle rotates the drill core to take wood, and the bottom area of the outer circle of the internal thread of the electric hammer handle simultaneously longitudinally punches and cuts a four-side right angle line on the drill sleeve.

[0008] Further, an external thread is arranged on the upper round handle of the drill core, and the drill core is an integrated support rod structure composed of the external thread on the upper round handle, a middle spiral body and a lower round edge; the drill core is placed in the drill sleeve, the length of the external thread is the length of the upper round handle of the drill core exceeding the cylindrical tube on the upper part of the drill sleeve, and a length-reduced external thread is further arranged; the external thread is connected with the internal thread, the electric hammer handle rotates to drive the drill core to take wood, and the friction resistance between the bottom area of the electric hammer handle and the drill sleeve is reduced.

[0009] Further, the shockproof slot is an inner right-angle U-shaped structure, the straight plate insertion strip of the contraction guide sliding sleeve is a four-right-angle cuboid, and the contraction guide sliding sleeve is finely inserted into the shockproof slot of the shockproof directional sleeve to prevent loosening; the guide sliding ring is sleeved into the side edge depth column of the electric hammer, the guide sliding transverse distance of the drill sleeve is adjusted, the arc-shaped through hole is bolted and locked with the fusion nut at the back side of the shockproof slot, the bolt is additionally bolted and locked with the fusion nut to prevent loosening; the directional circular pipe is sleeved on the cylindrical pipe at the upper part of the drill sleeve, the directional circular pipe is also provided with a fusion nut and a lengthened wire channel through hole to strengthen the locking force, and thus the shockproof directional sleeve has multiple reinforced anti-loosening effects in the connection.

[0010] Further, the straight plate insertion strip at the contraction guide sliding sleeve part has an arc-shaped through hole, the straight plate insertion strip is finely inserted into the shockproof slot at the shockproof directional sleeve part, the position of the arc-shaped through hole is bolted and locked with the fusion nut at the back side of the shockproof slot, the guide sliding ring is sleeved into the side edge depth column of the electric hammer, the working guide sliding transverse distance of the drill sleeve is adjusted, the straight plate insertion strip is locked with the fusion nut at the back side of the shockproof slot, and the bolt is additionally bolted and locked with the fusion nut, that is, the contraction guide sliding sleeve and the shockproof directional sleeve are used in combination, can be used for adjusting electric hammers of different sizes, and can generate the same direction distance of the guide sliding ring inner sleeve into the side edge depth column of the electric hammer, longitudinal guide sliding and the drill sleeve in the directional circular pipe and longitudinal cutting pressure.

[0011] Further, the lower part of the drill sleeve is a four-side support body structure, two symmetrical hollows are arranged on two side support bodies to facilitate wood chip discharge, and two symmetrical scales are arranged on the other two side support bodies to visually remind and avoid misjudgment; four straight knife edges are arranged at the bottom of the four-side support body. Beneficial effects

[0012] 1) The utility model effectively solves the problem of the four-side straight knife edge of the drill sleeve of the square hole drill pressed by manpower, and significantly improves the work efficiency;

[0013] 2) The shockproof directional sleeve is connected with other components in the utility model, has multiple reinforced anti-loosening effects in the connection, effectively solves the problem of easy loosening caused by vibration during electric hammer work, and further improves the drilling efficiency;

[0014] 3) The utility model is provided with the shockproof directional sleeve and the contraction guide sliding sleeve, the guide sliding ring of the contraction guide sliding sleeve is inserted into the electric hammer side edge depth column to the working distance of the drill sleeve, and the use problem of electric hammers of different sizes is effectively solved;

[0015] 4) The utility model is easy to assemble, convenient to carry, and not picky about the working site and angle. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the electric hammer handle in the preferred embodiment of the utility model.

[0017] Figure 2The structure diagram of the square handle of the electric hammer handle in the preferred embodiment of the utility model.

[0018] Figure 3 The explosion drawing of the preferred embodiment of the utility model.

[0019] Figure 4 The structure diagram of the round handle in the preferred embodiment of the utility model.

[0020] Figure 5 The structure diagram of the shockproof directional sleeve in the preferred embodiment of the utility model.

[0021] Figure 6 The structure diagram of the contraction guide sliding sleeve in the preferred embodiment of the utility model. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific drawings.

[0023] Referring to Figures 1-6 A square hole drill suitable for electric hammer use, including electric hammer handle 1, shockproof directional sleeve 2, contraction guide sliding sleeve 3, drill sleeve 4 and drill core 5, wherein, the inside of electric hammer handle 1 is provided with internal thread 11, the upper part of drill core 5 is provided with external thread 51, internal thread 11 is connected with external thread 51, and drill core 5 is placed in drill sleeve 4; shockproof directional sleeve 2 includes directional circular tube 21, shockproof slot 22 and fusion body nut 23, shockproof directional sleeve 2 is sleeved on the cylindrical tube on the upper part of drill sleeve 4 through directional circular tube 21, and is provided with the through hole thread way fusion body nut on directional circular tube 21, the cylindrical tube of drill sleeve 4 is provided with positioning thread hole 41, and the through hole thread way fusion body nut of directional circular tube 21 is through with positioning thread hole 41, shockproof directional sleeve 2 is fastened with the cylindrical tube through inserting bolt, shockproof slot 22 is connected with directional circular tube 21, and the inside slot back side of shockproof slot 22 is provided with the through hole thread way fusion body nut 23; contraction guide sliding sleeve 3 includes guide sliding ring 31, straight plate insertion strip 32 and arc-shaped through hole 33, guide sliding ring 31 is connected with straight plate insertion strip 32, straight plate insertion strip 32 is inserted into shockproof slot 22, and arc-shaped through hole 33 is simultaneously provided on straight plate insertion strip 32, the working distance of drill sleeve 4 and guide sliding ring 31 after inserting the depth column body on the side of electric hammer is adjusted, and then arc-shaped through hole 33 is locked with fusion body nut 23 through bolt, additional nut is locked, finally, electric hammer is inserted into the locking sleeve provided on the upper part of electric hammer handle 1, and work can be carried out; the lower part of drill sleeve 4 is provided with scale 42, and the bottom of drill sleeve 4 is provided with four square straight blade edges, through the setting of scale 42, error visual positioning can be effectively avoided.

[0024] In this embodiment, the upper part of the electric hammer handle 1 is a square handle or a round handle, a small area of internal thread 11 is arranged in the center of the electric hammer handle 1 to connect with the external thread 51 on the upper part of the drill core 5, the depth of the internal thread 11 is equal to the length of the external thread 51, a small clearance is arranged between the lower part of the electric hammer handle 1 and the upper cylindrical pipe of the drill sleeve 4, and an entity area is divided from the outer circle of the internal thread 11 in the center of the electric hammer handle, the diameter of the entity area is greater than or equal to the diameter of the cylindrical pipe on the upper part of the drill sleeve 4, the drill core 5 and the drill sleeve 4 are simultaneously worked on the two separated objects, the internal thread 11 of the electric hammer handle 1 rotates the drill core 5 to take wood, and the bottom area of the outer circle of the internal thread of the electric hammer handle 1 simultaneously longitudinally punches and cuts four straight lines of right angles on the drill sleeve 4.

[0025] In this embodiment, the external thread 51 is arranged on the upper round handle of the drill core 5, the drill core 5 is an integrated support rod structure composed of the upper round handle external thread 51, the middle spiral body and the lower round knife edge; the drill core 5 is placed in the drill sleeve 4, when the upper round handle of the drill core 5 exceeds the length of the upper cylindrical pipe of the drill sleeve 4, a length reduction external thread 51 is made, the external thread 51 is connected with the internal thread 11, the electric hammer handle 1 rotates to drive the drill core 5 to take wood, and the friction resistance between the bottom area of the electric hammer handle 1 and the drill sleeve is reduced.

[0026] In this embodiment, the positioning wire hole 41 is arranged on the upper cylindrical pipe of the drill sleeve 4, which plays a role of connecting the shockproof directional sleeve 2 and the contraction guide sleeve 3 to jointly function as longitudinal guide sliding, and plays a role of horizontal positioning of the four straight knife edge planes of the front end of the drill sleeve 4 itself.

[0027] In this embodiment, the shockproof insertion slot 22 in the shockproof directional sleeve 2 is an internal right-angle U-shaped structure, the straight plate insertion strip 32 of the contraction guide sleeve 3 is a four-right-angle cuboid, which is finely inserted into the shockproof insertion slot 22 in the shockproof directional sleeve 2 to prevent loosening; the working distance of the drill sleeve 4 and the electric hammer side depth cylinder and the guide sliding ring 31 is adjusted, then the arc-shaped through hole 33 and the fusion body nut 23 are connected and locked by bolts, and the bolt is additionally locked by a nut to prevent the fusion body nut 23 from loosening; the directional circular pipe 21 is sleeved on the cylindrical pipe on the upper part of the drill sleeve 4, the directional circular pipe 21 is also provided with a fusion body nut to increase the length of the wire channel and strengthen the locking force, corresponding to the positioning wire hole 41 penetrating through the upper cylindrical pipe of the drill sleeve 4, an additional bolt is fastened to strengthen the multi-element secondary anti-loosening and shockproof function of the shockproof directional sleeve 2.

[0028] In the embodiment, the shrinkable guide sleeve 3 is a straight plate inserted strip 32 fused to the outside of the guide ring 31, and the arc-shaped through hole 33 is built in the straight plate inserted strip 32. The middle part is rectangular, and the two ends are semi-arc-shaped for bolts, which are suitable for moving the straight plate inserted strip 32 left and right. The straight plate inserted strip 32 is finely inserted in the shockproof slot 22, and the working distance of the guide ring 31, the electric hammer side edge depth column and the drill sleeve 4 is adjusted. Then the arc-shaped through hole 33 is connected and locked with the fused body nut 23 by bolts. In addition, the nut locking bolt, the fused body nut 23 and the straight plate inserted strip 32 are locked. The effect is that the shrinkable guide sleeve 3 is used in combination with the shockproof directional sleeve 2, which can jointly adjust electric hammers of different sizes, and the longitudinal guide of the guide ring 31 into the electric hammer side edge depth column and the longitudinal cutting pressure of the drill sleeve 4 and the parallel guide distance between the two are generated.

[0029] In the embodiment, the shrinkable guide sleeve 3 is connected with the shockproof directional sleeve 2, and the directional circular tube 21 is connected with the positioning wire hole 41, which generates a fixed plane and a transverse direction, and jointly controls the four straight edge planes of the drill sleeve 4. Finally, the angle of the cylindrical tube positioning wire hole 41 of the drill sleeve 4 is adjusted to obtain the required transverse determination and positioning of the four straight edge planes of the drill sleeve 4.

[0030] In the embodiment, the lower part of the drill sleeve 4 is a four-sided support structure. Two symmetrical support bodies are hollowed out, which is convenient for guiding out wood chips. The other two symmetrical support bodies are provided with a scale 42, which can intuitively remind and avoid misjudgment. The bottom of the four-sided support body is provided with a four straight edge blade.

[0031] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. A square hole drill suitable for use with an electric hammer, comprising an electric hammer handle, a shockproof orientation sleeve, a retractable guide sleeve, a drill sleeve and a drill core, characterized in that, The shockproof directional sleeve is provided with a shockproof slot and a directional circular tube, the directional circular tube is sleeved on the cylindrical tube at the upper part of the drill sleeve, the directional circular tube is provided with a fusion body nut, the cylindrical tube is provided with a positioning wire hole penetrating the fusion body nut of the directional circular tube, and a bolt for fastening the shockproof directional sleeve and the cylindrical tube is inserted into the fusion body nut and the positioning wire hole of the directional circular tube; the drill core is arranged in the drill sleeve, the internal thread arranged in the electric hammer handle is connected with the external thread arranged on the drill core, and the locking sleeve for inserting the electric hammer is arranged at the upper part of the electric hammer handle; the guide sliding ring arranged on the contraction guide sliding sleeve is sleeved on the side depth column of the electric hammer, and the bolt for fastening the shockproof directional sleeve and the contraction guide sliding sleeve is inserted into the fusion body nut of the arc-shaped through hole arranged on the contraction guide sliding sleeve and the shockproof slot.

2. A square hole drill for use with an electric hammer according to claim 1, wherein The small-area internal thread arranged in the center of the electric hammer handle is connected with the external thread at the upper part of the drill core, and the depth of the internal thread is equal to the length of the external thread; and an entity area is separated from the outer circle of the internal thread in the center of the electric hammer handle, and the diameter of the entity area is greater than or equal to the diameter of the cylindrical tube at the upper part of the drill sleeve.

3. A square hole drill for use with an electric hammer according to claim 1, wherein The external thread is arranged on the upper part of the round handle of the drill core, the length of the external thread is equal to the length of the upper part of the drill sleeve, and the length of the external thread is slightly reduced.

4. The square hole drill suitable for electric hammer use according to claim 1, characterized in that, The structure of the shockproof directional sleeve is that the directional circular tube is fused with the shockproof slot, the shockproof slot is an inner right-angle U-shaped, the shockproof slot is provided with a fusion body nut with a through hole wire channel at the back side of the inner slot, and the directional circular tube opposite to the back side of the fusion body nut is also provided with a fusion body nut with a through hole wire channel.

5. A square hole drill for use with an electric hammer according to claim 1, wherein The structure of the contraction guide sliding sleeve is that the guide sliding ring is fused with the straight plate insertion strip outside, the straight plate insertion strip is a cuboid, and the arc-shaped through hole is arranged in the middle of the straight plate insertion strip; the middle of the arc-shaped through hole is a rectangle, and the left and right sides are half arcs with the diameter of the bolt.

6. A square hole drill for use with an electric hammer according to claim 1, wherein The support body at the lower part of the drill sleeve is provided with a scale on opposite sides.

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