CN87204514U

CN87204514U - Plug-in type bow drill and accessory tools

Info

Publication number: CN87204514U
Application number: CN 87204514
Authority: CN
Inventors: 覃长发; 谢永安
Original assignee: CILI COUNTY HARDWARE AND ELECTRICAL APPLIANCES FACTORY OF HUNAN PROVINCE
Current assignee: CILI COUNTY HARDWARE AND ELECTRICAL APPLIANCES FACTORY OF HUNAN PROVINCE
Priority date: 1987-08-13
Filing date: 1987-08-13
Publication date: 1988-07-13

Abstract

The utility model discloses a plug-in type bow drill and accessory tools, which is a matched carpenter's tool formed by the combination of a host machine and fittings. The clamping head of the host machine of the plug-in type bow drill and accessory tools is composed of a clamping jacket, a closing ring, a main pipe, a taper jacket, an across pin and a spring; the spare parts comprise a drill head and a screw driver which are respectively provided with a locating slot on a cylinder handle. Compared with the existing bow drill, the plug-in type bow drill and accessory tools has the advantages that the teardown time is shortened when operating, the coaxiality of the drill head and the drill handle is improved, the manufacturing technique is simple, and the cost is low; the plug-in type bow drill and accessory tools is an essential hand-actuated tool for carpenters and the household.

Description

Plug-in type bow drill and accessory tools

The utility model relates to a kind of wood working tool and supporting drill bit, screwdriver.

In technique known, the ratchet bit brace that the carpenter uses is all as clip type, and the clip type ratchet bit brace is by holder handle (1), rocking handle (2), and commutator (3), shelf (4) and chuck constitute.Its chuck is made up of collet body, chuck, jaw, spring leaf.Drill bit leans on the location, a rectangular pyramid hole in the middle of the positioning body and plays the transmission torsional interaction of duty, and drill bit screws chuck after inserting.Make four jaws of chuck inner face clamp drill bit, can not skid off.

The clip type ratchet bit brace is because its chuck part is many, thereby whole collet segment volume is big, and it is many to consume material, and processing technology is numerous and diverse, the cost height.At present, the drill bit of selling the clip type ratchet bit brace that uses with reality on the market all is that shank is the flat-die forging body of a rectangular pyramid, because drill bit is by the location, pyramid hole of positioning body and does to transmit moment of torsion that bit sub and drill bit are difficult to be positioned at simultaneously on the same axis during use in use.Act on simultaneously owing to multiple factor in the operating process, thus the coaxiality deviation increase, influence result of use, need place chuck repeatedly during loading and unloading.Make the operator waste time and energy.

Easy to loading and unloading when the purpose of this utility model is to provide a kind of operation, the chuck part is few, and processing is simple, and cost drilling tool of doing to hole low, that coaxiality error is little when using and loading and unloading screw are used revolves tool.

In order to finish above-mentioned task, the utility model has adopted following scheme in design: transmit moment of torsion and cylindrical hole cooperation, positioning and guiding with half of cylinder bolt 1..2. embed automatically with pin and make the drill bit auto lock in the drillstock groove.3. reversing arrangement is the breach location commutation of cylinder bolt.4. the joint cross section is a circular cross-section.5. adapted drill bit and screwdriver handle are cylinder.And shank is provided with locating slot, and the end is the cutting semicylinder.

The utility model adopts after the above-mentioned design, compares with the clip type ratchet bit brace, has easy to loading and unloadingly, and the chuck part is few.Volume is little, processing technology is simple, cost is low.The coaxial accuracy height is easy to loading and unloading during use, and has boring, screws the dual-use function that unclamps screw.

Fig. 1 is the completed assembled figure of this utility model.

Fig. 2 is the matching used drillstock front view of this utility model.

Fig. 3 is the tapered sleeve front view of this utility model.

Fig. 4 is the chuck front view of this utility model.

Fig. 5 is the collar front view of this utility model.

Fig. 6 is person in charge's front view of this utility model.

Fig. 7 is the axle front view of this utility model.

Embodiment of the present utility model is:

Process tapered sleeve ∥ ∥ (9) with metal material respectively by Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, chuck (6), collar (7), the person in charge (8), axle (12) also are equipped with (10) one of cylinder lateral pins, (11) one of cylindrical springs, other is equipped with drill bit or screwdriver that a cover shank has annular, linear locating slot as shown in Figure 2 on the cylindrical handle.

Component structural of the present utility model has following feature: chuck (6) is a hollow circular cylinder, one inscribed cylinder dignity is arranged in the body, this inscribed cylinder dignity diameter is greater than the interior diameter of chuck (6), and height is less than the length of chuck (6), and the vertical section of chuck (6) as shown in Figure 4.Being responsible for ∥ (8) is a hollow metal pipe, and its vertical section is a stairstepping, has one to run through circular hole on the tube wall.The central axis of circular hole and the person in charge's central axis have an angle.Axle (12) is a cylinder, and its end is a step, and the circular hole of two lateral direction penetratings is arranged on the cylinder.With the drill bit that the utility model is used, on the cylindrical shank of the vertical cutter of spiral shell locating slot is arranged all, the end is the cutting semicylinder, the shape of locating slot is circular or linearity.

Assemble sequence of the present utility model is such, will be responsible for (8) and be enclosed within on the axle (12).It is fixing with the straight pin series connection with the corresponding circular hole of axle (12) step one end to be responsible for (8), is being responsible for the outside cover upper spring (11) and the collar (7) of (8) again, and first shock mount (11) refills collar (7), puts on lateral pin (10) again.Lateral pin (10) is through to be responsible on the wall and to be responsible for axis at an angle in the skewed slot of angle, refills chuck (6) and tapered sleeve (9).Put after the chuck (6), axle (12), spring (11), collar (7) are all covered fully by chuck (6), but can slide.Tapered sleeve (9) will be responsible for (8) mouthful flange then and rivet tightly on chuck (6).At last the circular hole of axle (12) afterbody is connected the location with circular hole on the commutator (3) with straight pin.To have the drill bit of locating slot or screwdriver with the supporting shank of plug-in type ratchet bit brace again loads onto positioning instant and can use.

Method of operating of the present utility model is such: when inserting drillstock, down hold chuck (6) with left hand earlier, the right hand inserts drillstock, unclamp left hand, chuck (6) then rotates drillstock if can not reset, along with " click " one, indicate that drillstock puts in place, chuck this moment (6) resets fully and illustrates that drillstock is stuck, show and can use, during taking-up only with the left hand chuck (6) of leaving behind, with the right hand up gently one group can take out drillstock, unclamp left hand, chuck (6) resets very soon.

The utility model convenient and flexible operation, time saving and energy saving, efficient height, drill bit and drillstock axiality height are well received wood working tools.

Claims

1, a kind of portable manual instrument, feature of the present utility model is that the person in charge [8] of chuck [5] is enclosed within on the axle [12], straight pin series connection and the fixing corresponding aperture of being responsible on [8] and the axle [12], spring [11] and collar [7] are enclosed within the outside of the person in charge [8], lateral pin [10] string on being responsible for [8] wall be responsible in the axis skewed slot at an angle, chuck [6] covers axle [12], spring [11], collar [7] back also slidably, tapered sleeve [9] is contained on the chuck [6], be responsible for [8] flange suitable for reading and rivet tightly, the circular hole of axle [12] afterbody is connected the matching used screwdriver of same chuck [5] with the circular hole of commutator [3] with straight pin, the drill bit afterbody has the locating slot of annular or straight line

2, by the described hand-operated tools of claim 1, it is characterized in that chuck (6) is a hollow circular cylinder, an inscribed cylinder dignity is arranged, this inscribed cylinder dignity diameter is greater than the interior diameter of chuck (6), and height is less than the length of chuck (6).

3, by the described hand-operated tools of claim 1, it is characterized in that being responsible for (8) is a stepped hollow tube of cylinder, a through hole is arranged on the tube wall, the central axis of circular hole and the person in charge's central axis have an angle.

4, by the described hand-operated tools of claim 1, it is characterized in that axle (12) is a cylinder, its end is a step, and the circular hole of two lateral direction penetratings is arranged on the cylinder.