CN2920567Y - Convertible Power Tools - Google Patents

Abstract

The utility model relates to an electric tool with changeable appearance, which comprises a shell, a driving device and an electric component; the casing includes a main casing and a secondary casing, the main casing is used for containing a driving device, the secondary casing is used for connecting a battery, and the secondary casing can be fixedly arranged on the main casing in at least two orientations.

Description

Convertible Power Tools

technical field

The present invention relates to electric tools, in particular to an electric tool with a changeable shape.

Background technique

Existing electric tools powered by batteries, such as electric nail guns, electric screwdrivers or hand-held electric drills, etc., as shown in Figure 16, the electric drill E, its main structure includes a housing 6, a drive in the housing 6 device 8 and a battery assembly 9 combined on the housing 6 and electrically connected to the driving device 8, the battery assembly 8 is used to provide power to the driving device 8, so that the driving device 8 can drive a tool to move, Such as driving a drill bit to rotate.

Electric tools are often used in various working spaces, but their fixed shape cannot be suitable for various spaces. As shown in Figure 17, the electric drill E is different from the environment in which the electric drill E is located because of its battery assembly 8 Produce interference, and affect the work of this electric drill E to carry out.

In order to solve this problem, the currently adopted method is to change the combination structure between the battery and the housing, so that the battery can be combined with the housing in two directions with a difference of 180 degrees, so that the electric tool has two directions that can be changed according to requirements. The shape, as shown in Figure 18 and Figure 19, is in response to the needs of the working space.

This method leads to an increase in the number of times the user combines and disassembles the battery and the housing; due to the complex structure of the battery and the housing, disassembling and combining the housing and the battery too many times will cause the joint structure between them to be easily damaged. If the combination of the two is poor or cannot be combined, it is easy to cause poor electrical connection between the battery and the driving device arranged in the casing.

In addition, the power tools shown in Figures 18 and 19 can only be transformed into two shapes, and cannot be used in various working spaces.

Utility model content

In view of this, the main purpose of the present invention is to provide a power tool with changeable shape, the shape of which can be changed in many ways.

A secondary object of the present invention is to provide a power tool with a variable shape, the combination state between the battery and the casing, and the electrical connection between the battery and the driving device are good.

In order to achieve the purpose of the invention disclosed above, the technology adopted in the present invention is to divide the housing of the electric tool into a main housing and a primary housing, the main housing is used to accommodate a driving device, and the secondary housing is used for A battery can be connected, and the secondary housing can be fixed on the main housing in at least two orientations. Through this, the shape of the electric tool can be changed in at least two ways to meet the requirements of different working spaces.

The technical point of the present invention is that: the housing of the electric tool disclosed in the present invention is composed of a main housing and a secondary housing that can be combined with the main housing in at least two different orientations. By changing the overall shape of the electric tool, the electric tool is suitable for a variety of different working spaces, and this design can avoid the power supply failure caused by the frequent disassembly and assembly of the battery pack in the prior art Or the disadvantage of poor combination of battery components.

Description of drawings

Hereinafter, preferred embodiments of the present invention are cited, and are described in detail in conjunction with the following illustrations; in the following illustrations:

Fig. 1 is a partial structure exploded view of the first embodiment of the present invention;

Fig. 2 is a structural diagram of some components of the embodiment shown in Fig. 1;

Fig. 3 is a side view partial sectional view of the embodiment shown in Fig. 1;

Fig. 4 is a sectional view along line 4-4 of Fig. 3;

Figures 5 to 7 are side views of the embodiment shown in Figure 1 in different forms;

Fig. 8 is an exploded view of some components of the second embodiment of the present invention.

Fig. 9 is a partial cross-sectional side view of the embodiment shown in Fig. 8;

Fig. 10 is a sectional view along line 10-10 of Fig. 9;

Figures 11 to 12 are side views of the embodiment shown in Figure 8 in different forms;

Fig. 13 is a partial structural exploded view of the third embodiment of the present invention;

Figures 14 to 15 are schematic diagrams of the operation of the embodiment shown in Figure 13;

Fig. 16 is a schematic structural view of an existing electric tool;

Fig. 17 is a schematic view of the use of the existing electric tool shown in Fig. 16;

18 to 19 are schematic diagrams showing two different usage states of another conventional electric tool.

[Description of main component symbols]

first embodiment

Power tool A Housing 1

Driving device 2 Battery pack 3

Main shell 10 Body 11

Handpiece 12 Combining groove 121

Positioning hole 122 Concave and convex parts 123, 124

Notch 125

First lug 13 Perforation 131

Second lug 14 Nut 141

Bolt 15

Sub-housing 20 Body 21

Combination structure 211 Combination part 22

Locating neck 221 Stop ring 222

Concave and convex parts 223, 224

Motor 30 Transmission gear set 31

Tool Chuck 32 Switch 33

Power cord 34 The first lead terminal 35

Battery case 40 Combined structure 401

Battery 41 Second lead terminal 42

second embodiment

Power tool B

Shell 4

Main housing 50 Body 51

Handheld part 52 Combining convex part 521

Thread 522 Accommodating chamber 523

Opening 524 The first bidirectional connection terminal 525

Secondary shell 60 Shell body 61

Body 611 Combination column 612

Neck 613 Second bidirectional connection terminal 614

Combining screw ring 62 Combining groove 621

Perforation 622 Thread 623

third embodiment

power tools C.

Shell 7

Main housing 70 Body 71

The handle part 72 is combined with the convex ring 721

Accommodating slot 722 Perforation 723

Locating latch 724 Projection 725

Spring 726 Opening 727

Sub-housing 80 Body 81

Joint structure 811 Joint part 82

Combining groove 821 Block post 822

Locating groove 823 Perforation 83

Detailed ways

Please refer to Fig. 1-Fig. 4, the electric tool A of the first embodiment of the present invention mainly includes a casing 1, a driving device 2 and a battery assembly 3; wherein:

The housing 1 includes a main housing 10 and a primary housing 20 .

The main casing 10 is formed by butting two half casings, and has a body 11, a handle 12 roughly connected to the body 11 at an angle of 90 degrees, a first lug 13 and a second lug 14, and a bolt 15. The inside of the handle 12 has a coupling groove 121 close to the free end of the handle 12, and a positioning hole 122 is opened on the free end surface of the handle 12 to communicate with the inside of the handle 12 and the outside, and the positioning hole A plurality of concave and convex parts 123 and 124 are formed on the wall of the hole 122 in a staggered arrangement. The first and second lugs 13, 14 extend from the outer wall surface of the handle 12 in parallel to the free end, wherein the first lug 13 has a through hole 131, and the second lug 14 has a A nut 141 is then planted. The bolt 15 passes through the through hole 131 of the first lug 13 and is combined with the nut 141 in the second lug 14 . In addition, the handle portion 12 further has a notch 125 located between the two lugs 13 , 14 .

The secondary housing 20 has a body portion 21 and a joint portion 22 . The bottom of the body 2 has a joint structure 211; the joint 22 has a positioning neck 221 extending upward from the top of the body 21, and a stop ring 222 connected to the top of the positioning neck 221, and the positioning neck A plurality of concave and convex parts 223 and 224 are formed on the neck wall of the positioning hole 122 to cooperate with the concave and convex parts 123 and 124 in a staggered arrangement. The secondary housing 20 is combined on the main housing 10, its stop ring 222 is located in the coupling groove 121 of the main housing 10, and its positioning neck 221 is located in the positioning hole 122; when the bolt 15 is tightened When the head of the bolt 15 presses the first lug 13 against the second lug 14 and causes the positioning hole 122 to shrink, the positioning neck 221 is pressed by the wall of the positioning hole 122, so that the positioning hole 122 interacts with the concave and convex parts 123, 124, 223, 224 of the positioning neck 221 to form the positioning of the main housing 10 and the secondary housing 20; when the bolt 15 is loosened, the first convex The ear 13 returns to its original position due to the elasticity, the positioning hole 122 returns to its original size and loosens from the positioning neck 221, and the secondary housing 20 is ready for rotation.

The driving device 2 mainly includes a motor 30, a transmission gear set 31, a tool chuck 32, a switch 33 and a set of power cords 34, wherein the motor 30 and the transmission gear set 31 are arranged on the main casing 10 in the body 11, and the output end of the motor 30 is connected to the input end of the transmission gear set 31; The output end of the transmission tooth group 31; the switch 33 is located on the handle 12; one end of the power cord 34 is connected to the motor 30 through the switch 33, and the other end penetrates the inside of the secondary housing 20 and is connected to a The first conducting terminal 35 is assembled at the joint structure 211 of the secondary housing 20 .

The battery assembly 3 includes a battery case 40 and a plurality of batteries 41 fixedly arranged inside the battery case 40 and connected in series. 20 combined with the combination structure 211, so that the battery assembly 3 can be combined with the sub-housing 20; electrode, and is used to combine 35 with the first lead terminal on the sub-housing 20 when the battery assembly 3 is combined on the sub-housing 20, so that the power of the batteries 41 can be supplied to the sub-housing 20 through the switch 22 Motor 30.

By combining the battery assembly 3 with the sub-housing 20 through the structure of the above-mentioned electric tool A, the first and second conductive terminals 35, 42 are combined, as shown in FIG. 5 , the battery of the battery assembly 3 41 can supply power to the driving device 2 . When the user needs to change the shape of the electric tool A according to different working spaces, he can loosen the bolt 15 and rotate the battery assembly 3 and the secondary housing 20, so that the secondary housing 20 and the battery assembly 3 are formed Rotate relative to the main housing 10 to change the shape of the electric tool A, as shown in Figures 6 and 7; then tighten the bolt 15 to reposition the secondary housing 20 and the main housing 10 Just fix it. In this way, the electric tool A can be used in many different working spaces.

Please refer to Figures 8 to 10, the electric tool B of the second embodiment of the present invention, it includes a housing 4, a driving device and a battery assembly the same as the above-mentioned embodiment, and the housing 4 is the same as the above-mentioned embodiment It includes a main casing 50 and a primary casing 60; wherein, the driving device and the battery assembly are the same as those described in the above embodiments, and will not be repeated here.

The main housing 50 has a body portion 51 and a handle portion 52 in the same manner as the above-mentioned embodiment, the free end of the handle portion 52 has a coupling convex portion 521, and the peripheral wall of the coupling convex portion 521 has a screw thread 522; An accommodating chamber 523 with an elliptical section is formed in the portion 52 , and the accommodating chamber has an elliptical opening 524 formed on an end surface of the coupling protrusion 521 . In addition, the driving device has a first bidirectional connection terminal 525 disposed in the accommodating chamber.

The secondary housing 60 has a housing body 61 and a coupling screw ring 62 . The shell body 61 has a body portion 611, an elliptical cross-section coupling post 612, and a neck 613 respectively connecting the coupling post 612 and the body portion 611 and having a circular cross-section; in addition, the top surface of the coupling post 612 There is a second bidirectional connection terminal 614 capable of being conductively combined with the first bidirectional connection terminal 525 . The central portion of the coupling spiral ring 62 has a coupling groove 621, a perforation 622 that runs through the bottom of the coupling groove 621, and a thread 623 is provided on the groove wall of the coupling groove 621; on the neck 613 of the secondary housing 60 .

Through the structure of the above-mentioned primary and secondary housings 50, 60, the secondary housing 60 can insert its coupling column 612 into the accommodating chamber 523 from the opening 524 of the main housing 50, so that the first and second bidirectional guides The connecting terminals 525, 614 are in a conductive connection, and then the thread 623 of the connecting screw ring 62 is combined with the thread 522 of the connecting convex part 521, so that the main and secondary housings 50, 60 are tightly combined, as shown in Figure 11 Show.

When the user needs to change the shape of the electric tool B, he only needs to unscrew the coupling screw ring 62 to leave the coupling protrusion 521, and pull the coupling post 612 out of the accommodating chamber 523, and then the secondary housing 60 and the battery assembly horizontally rotated 180 degrees, insert the coupling column 612 into the accommodation chamber 523 to combine the first and second bidirectional conductive terminals 525, 614, and screw the coupling screw ring 62 and the Combined with the convex portion 521, the program of changing the shape of the electric tool is completed, as shown in FIG. 12 . In this way, the electric tool B of this embodiment can be transformed into two shapes.

Please refer to FIG. 13-FIG. 15 , these diagrams are partial structural decomposition and operation diagrams of the electric tool C according to the third embodiment of the present invention. The electric tool C includes a casing 7, a driving device and a battery assembly similarly to the above embodiment, and the casing 7 includes a main casing 70 and a primary casing 80 similarly to the above embodiment; wherein, the The driving device and the battery assembly are the same as those described in the above embodiments, and will not be repeated here.

The main housing 70 has a body portion 71 and a handle portion 72 same as the above embodiment. The inner wall of the handle 72 is close to the free end of the handle 72 with two coupling protruding rings 721 arranged in parallel at predetermined intervals, and an accommodating groove 722 is further formed on the inner wall of the handle 72, the accommodating groove 722 A perforation 723 is provided at the bottom of the groove to pass through the inside and outside of the handle 72; a positioning latch 724 and a spring 726 are also provided. Slide back and forth along the accommodating groove 722; and, the positioning latch 724 has a protrusion 725 passing through the through hole 723; the spring 726 is arranged between the positioning latch 724 and the accommodating groove 722, to withstand The positioning latch 724 maintains the positioning latch 724 at a fixed position. In addition, an opening 727 is further defined on the free end surface of the handle portion 72 to communicate with the inside of the handle portion 72 and the outside.

The secondary housing 80 has a body portion 81 and a joint portion 82 . The bottom of the body 81 has a joint structure 811; the joint 82 is a cylinder extending upward from the top of the body 81, and two joint grooves are recessed on the surrounding wall to match the joint convex ring 721 of the handle 72 821, a blocking post 822 is protruded on its top surface, and four positioning grooves 823 are recessed at equal distances along the periphery. In addition, the secondary housing 80 has a through hole 83 passing through the top surface of the joint portion 80 and the bottom surface of the body portion 81 .

The coupling groove 821 of the sub-housing 80 is combined with the coupling protruding ring 721 of the main housing 70, so that the sub-housing 80 is combined on the main housing 70, and the sub-housing 80 can be relatively The main housing rotates 90°, and the stop post 822 is used to interfere with the groove wall of the accommodating groove 722 of the secondary housing during the rotation, so as to limit the rotation range of the secondary housing 80 from exceeding 360 degrees reciprocatingly.

The bottom end of the positioning latch 724 is kept against the top surface of the joint portion 82 because the top of the positioning latch 724 is pushed by the spring 726. During the rotation of the secondary housing by 80 degrees, when When any one of the four locating grooves 823 moved below the bottom of the locating bolt 724, the bottom of the locating column bolt 724 would snap into the locating groove 823 because its top was pushed against by the spring 726, and Locking the sub-housing 80 prevents it from rotating continuously to achieve the positioning effect between the main casing 70 and the sub-housing 80 ; as shown in FIG. 14 . When desiring to release the positioning effect between the main housing 70 and the secondary housing 80, only the projection 725 of the positioning latch 724 needs to be moved by hand, so that the positioning latch 724 moves upward along the receiving groove 722, so that The bottom of the positioning latch 724 leaves the positioning groove 823 where it is located, and the secondary housing 80 can continue to rotate; as shown in FIG. 15 . Through this, the electric tool can be changed into four shapes.

Claims (8)

1. An electric tool with a changeable shape, which includes a housing, a driving device and a battery assembly; it is characterized in that: The housing includes a main housing and a primary housing, and the secondary housing is fixed on the main housing in at least two states of different orientations; The driving device is arranged in the main housing and is used to drive a tool; The battery assembly is detachably combined with the secondary housing and electrically connected with the driving device for supplying power to the driving device. 2. The shape-changable power tool as claimed in claim 1, wherein the main housing has a body, a handle connected to the body at an angle of 90 degrees, a first lug and a second lug, and a bolt; the inside of the handle part is provided with a coupling groove close to the free end of the handle part, and a positioning hole is opened on the free end surface of the handle part to communicate with the inside of the handle part and the outside world, And the hole wall of the positioning hole is formed with a plurality of staggered concave and convex parts; the first and second lugs extend in parallel from the outer wall surface of the handle part near the free end, wherein the first The lug has a perforation, and a nut is planted in the second lug; the bolt passes through the hole of the first lug and is combined with the nut in the second lug; in addition, the handle There is a notch located between the two lugs on the top. The secondary housing has a body and a joint. The joint has a positioning neck extending upward from the top of the body and a stopper connected to the top of the positioning neck. The stop ring, and the neck wall of the positioning neck is matched with the concave and convex parts of the positioning hole to form a plurality of staggered concave and convex parts; the secondary housing is combined with the main housing, and its stop ring is located on the and the positioning neck is located in the positioning hole. 3. The power tool with a changeable shape as claimed in claim 2, wherein the bottom of the body has a combined structure; the battery assembly includes a battery case, and is fixedly arranged on the battery case Internal and interconnected batteries, the top of the battery case has a bonding structure. 4. The electric tool with a changeable shape as claimed in claim 3, wherein the driving device includes a first conducting terminal, which is arranged at the joint structure of the secondary housing; the battery assembly includes a The second conducting terminal is connected to the electrode of the battery, and is used for combining with the first conducting terminal on the sub-housing when the battery assembly is combined on the sub-housing. 5. The electric tool with a changeable shape as claimed in claim 4, wherein the driving device further comprises a motor, a transmission gear set, a tool chuck, a switch and a set of power cords, wherein the The motor and the transmission gear set are arranged in the body of the main housing, and the output end of the motor is connected to the input end of the transmission gear set; the tool chuck is passed through the main housing from the body The front end of the transmission gear set is connected to the output end of the transmission gear set; the switch is set on the handle; one end of the set of power lines is connected to the motor through the switch, and the other end penetrates into the interior of the secondary housing and is connected to the second a lead terminal. 6. The power tool with a changeable shape as claimed in claim 1, wherein the main housing has a body and a handle, the free end of the handle has a coupling protrusion, and the coupling protrusion There is a screw thread on the peripheral wall; an accommodating chamber with an elliptical cross-section is formed in the handle part, and the accommodating chamber has an elliptical opening formed on the end surface of the combined convex part; the secondary housing has a shell body and A combination spiral ring; the shell body has a body, a combination column with an elliptical section, and a neck that respectively connects the combination column and the body and has a circular section; the central part of the combination spiral ring has a combination groove 1. A perforation that runs through the bottom of the combination groove, and the groove wall of the combination groove has a screw thread; moreover, the combination spiral ring is sleeved on the neck of the secondary housing through the through hole. 7. The shape-changeable power tool according to claim 6, wherein the driving device has a first bidirectional connection terminal disposed in the accommodating chamber, and the top surface of the coupling column has a The first bidirectional connection terminal is a second bidirectional connection terminal that is conductively combined. 8. The power tool with a changeable shape as claimed in claim 1, wherein the main housing has a body and a handle, and the inner wall of the handle is close to the free end of the handle. Combining protruding rings arranged in parallel at predetermined intervals, and an accommodating groove is formed on the inner wall of the handle, and a perforation is opened at the bottom of the accommodating groove to penetrate the inside and outside of the handle; a positioning latch and a spring are also provided , the positioning latch is placed in the accommodating groove, and reciprocally slides along the accommodating groove in the accommodating groove; in addition, the positioning latch has a protrusion passing through the through hole; the spring is arranged in the positioning Between the latch and the accommodating groove, it is used to resist the positioning latch, so that the positioning latch can be maintained at a fixed position; in addition, an opening is opened on the free end surface of the handle part to communicate with the inside of the handle part and the outside world. ; The sub-housing has a joint portion, and two joint grooves are recessed on the peripheral wall to cooperate with the joint convex ring of the handle portion, and a blocking post is protruded on the top surface, and four positioning pins are recessed equidistantly along the peripheral edge. Groove; the coupling groove of the secondary housing is combined with the coupling protruding ring of the main housing, so that the secondary housing is combined with the main housing.

Images