TWI391209B - Can quickly replace the wrench of the drive head - Google Patents

Description

Quickly replace the wrench of the drive head

The invention relates to the field of hand tools, in particular to a wrench capable of quickly replacing a drive head.

According to our experience of many years of use, the wrenches commonly used in the market, in addition to adjustable wrenches, pipe wrenches, etc., can be adjusted to the size of the jaws, and the other socket wrenches must be replaced by a replacement sleeve to accommodate various types of wrenches. The specifications of the nut are unlocked. Other wrenches, such as composite wrenches and ratchet wrenches, have only a single size and can only rotate the corresponding single-size object. Therefore, in the general toolbox, multiple specifications and styles must be placed at the same time. Wrench to solve the needs of use in different situations.

However, the conventional traditional composite wrenches and ratchet wrenches are mostly in a single size. The drive components of the wrench cannot be quickly replaced, so that the tool box must be placed with multiple wrenches, which not only brings the weight of the toolbox to the use. It is inconvenient to carry, and it takes a lot of money to purchase a wrench; although a socket wrench capable of replacing a plurality of sleeves can solve the above problem, if the screw is used because the upper and lower spaces are narrow and cannot be set from top to bottom, The socket wrench can not be used; in addition, the adjustable wrench can adjust the distance between the movable cymbal and the fixed cymbal according to the size of the screw. Although it can solve the problem of adding the wrench, if it is used for small size screw, and When the space is narrow, the width of the adjustable wrench is wide, and it is difficult to enter the use.

In the conventional wrench, there is a wrench for replacing the function of the driving head. For example, as shown in the Patent No. M284486 of the Republic of China, in this case, a latching member is provided on the bolting portion extending at one end of the driving head, and a socket is provided on the sleeve portion of the wrench body, so that the bolt portion is inserted into the socket hole of the wrench body, and the latch member is protruded from the positioning hole to form a snap joint. Although the wrench has the function of quickly replacing the driving head, the angle of the driving head cannot be adjusted, and the wrench body must have a set of connecting holes, so that the whole volume becomes large, which is disadvantageous for narrow space use, and the manufacturing cost is also due to the socket hole. In addition, as in the patent application No. I271275, which was previously filed by the creator, the left and right arms of one end of the grip are respectively provided with a coupling member for the dimple of the driving head. The fixing is fixed, although the driver head is quickly replaced, and the function of adjusting the angle of the driving head is provided. However, after the first installation, the user cannot know from the appearance whether the two are actually aligned, and the pulling operation is required. To ensure Still room for improvement.

In view of this, after continuous experimentation, the creator has specially provided a quick-change driver head wrench which can solve the above problems and is more innovative, as explained in detail below.

To this end, the present invention is to develop and improve a conventional wrench, and mainly has a concave pivoting portion at one end of the handle, the concave pivoting portion extending the left and right arms to form a concave shape, and on the side of the arms, A constant hole is formed through the joint member, and the inner wall of the two arms is provided with a hole for inserting a top member, and a drive head is provided. The drive head is provided with a convex pivot portion at the convex shape. One end side of the pivoting portion is provided with an open-shaped notch, and a plurality of teeth are arranged along the convex arc surface The part can be used for the top piece to abut the top, and the hole below the arc surface is provided with a hole for the card to be placed. With such a structure, the following features are obtained:

1. The invention directly engages the notch of the driving head on the joint of the handle, and the assembly is simple, and it is easy to know the authenticity of the fastening from the appearance, and it is not necessary to use the structure as the conventional one, and it is necessary to try to find the two arms. The joint member can be combined, and the engaging member can be engaged and fixed by the card engaging member, so that the driving head has a quick dismounting function, and the driving head and the grip are surely fixed, which is the main purpose of the invention.

2. The secondary object of the present invention is to regard the joint member as a rotating shaft center, and the driving head is centered on the rotating shaft, so that the driving head can swing up and down at different angles, and the top jaw block is engaged with the convex portion. The circular arc tooth portion of the pivot portion can be used for bending and fixing the driving head at different angles.

The invention relates to a wrench capable of quickly replacing a driving head. For the technical means and functions of the present invention for achieving the above objects and features, please refer to the first and second figures first: first and second figures The wrench 1 is mainly composed of a driving head 10, a handle 20 and a coupling member 30. The grip 20 has a concave-shaped concave pivoting portion 21 at one end, and the left and right arms of the concave pivoting portion 21 22 is substantially parallel, and is disposed in the consistent hole 221 of the two arms for receiving the coupling member 30, and a first hole 23 is disposed in the middle inner wall between the arms 22 for a top The top member 40 is received, the top member 40 includes a spring 41 and a top block 42; The driving head 10 is provided with a driving member 11 at one end and a convex-shaped convex pivoting portion 12 at the other end. The convex pivoting portion 12 can be inserted between the two arms of the concave pivoting portion 21, and A U-shaped open-shaped notch 121 is formed on the side of the convex pivoting portion 12, and the notch 121 is for receiving and engaging the coupling member 30, and a circle is formed at the end surface of the convex pivoting portion 12. The arc surface is provided with a plurality of tooth portions 122 along the arc surface, and a slightly lower position at the end surface, a second hole 123 is communicated with the notch 121, and a card holder 50 is accommodated. The resisting member 50 includes a steel ball 51, a spring 52 and a plug post 53. In addition, in order to prevent the latching member 50 from falling out of the second hole 123 of the inner edge of the notch 121, as shown in FIG. When the second hole 123 is to communicate with the end surface of the notch 121, an abutting portion 124 may be added.

When the wrench 1 is assembled, the steel ball 51, the spring 52 and the plug 53 of the latching member 50 are first placed into the second hole 123, and then the spring 41 and the top block 42 of the top member 40 are sequentially placed into the second hole 123. a hole 23 is provided and riveted to prevent the top element 40 from jumping off, and the coupling member 30 is inserted and fixed in the through hole 221 of the two arms 22, and finally the convex pivot portion 12 is inserted into the concave pivot. In the joint portion 21, the joint member 30 is simultaneously inserted into the notch 121. At this time, the steel ball 51 is pushed by the joint member 30 to be compressed toward the side of the plug post 53 of the second hole 123, and the joint member 30 abuts against the gap. At the bottom of the 121, the steel ball 51 is no longer pushed by the coupling member 30, and the elastic force of the spring 52 pushes against the second hole 123 to abut the top of the notch, so that the steel ball 51 is stuck against the coupling member 30 and is fixed. The top end block 42 disposed in the first hole 23 is pushed by the spring 41 so that the tip end of the top block 42 abuts against the tooth portion 122 of the convex pivot portion 12, and is combined as shown in the third figure. Wrench. Thus, the coupling member 30 becomes a rotation axis center, and the driving head 10 is centered on the rotation axis, so that the driving head 10 can swing up and down, as shown in the fourth figure, thereby exhibiting an angular bending; In the first 10, the user only needs to apply the force of the handle 20 to the opening of the notch 121, and the driving head 10 is biased in the opposite direction, so that the coupling member 30 is not affected by the top of the steel ball 51, so that the driving head 10 is held by the hand. The handle 20 is disengaged. In this case, as shown in the fifth figure, the driving member 11 of different styles, such as the open end, the closed end, the ratchet end, etc., can be replaced, so that it can be quickly fastened with the handle 20.

Most of the structures shown in the following second to sixth embodiments are the same as those of the wrench 1. In order to avoid redundancy, the following embodiments only describe the differences of the first embodiment.

Referring to the second embodiment shown in FIG. 6, the difference between the embodiment is that the second hole 123 is formed in the inner edge of the notch 121, and a third hole A1 is disposed on the opposite side (corresponding to FIG. Compared with the first A-picture, the abutting portion 124 originally disposed in the second hole 123 is modified to be opened in the third hole A1 (as shown in FIG. 7A), since the third hole A1 has only a single opening. There is no need to provide the plug 53. As shown in the seventh figure, the spring 52 and the steel ball 51 are simply inserted into the third hole A1 in sequence, and riveted to prevent the steel ball 51 from jumping off.

Referring to the third embodiment shown in FIG. 8 , in the difference of the embodiment, an inner groove B1 is first disposed at the inner edge of the middle position of the notch 121 for receiving an elastic snap member B2. The fastener B2 is in the shape of an arc curved in the middle, and the two ends are bent at a specific angle, and the notch 121 is changed in accordance with the shape of the elastic snap member B2; however, as shown in the ninth figure, in order to prevent the elastic buckle The member B2 is easily dropped by the notch 121, so that a fixing block B3 extends inwardly on both sides of the position of the notch 121, and the two ends of the elastic snap member B2 abut against the notch 121, as shown in the tenth figure; Referring to the eighth figure, a ring groove B4 is disposed at an appropriate position on the coupling member 30. When the coupling member 30 is forcibly inserted into the notch 121, as shown in the eleventh and twelfth drawings, the ring groove B4 forces the elastic card. When the fastening member 30 is forcibly inserted into the bottom of the notch 121, the two bending points of the elastic fastening member B2 are restored to the original shape, and the coupling member 30 is caught, thereby utilizing The two bending points fix the coupling member 30, and can replace the card abutting member and the second hole, and the assembled wrench Referring to a thirteenth shown in FIG.

Referring to the fourth embodiment shown in FIG. 14 , in the difference of the embodiment, the position of the notch 121 is firstly changed to the two arms 22 , and the side of the convex pivoting portion is provided with a consistent hole C1. The coupling member 30 is inserted into the hole, and a fourth hole C2 is disposed at a position slightly below the left and right arms 22 of the concave pivoting portion 21. The fourth hole C2 can communicate with the notch 121, and the other side of the fourth hole C2 is notched 121. A fifth hole C3 is disposed, and the spring 52 and the steel ball 51 accommodated in the fifth hole C3 are similar to the third hole A1 of FIG. A. The fifth hole C3 is adjacent to one end of the notch 121. There is a stop 124 (not shown) In order to prevent the steel ball 51 from jumping off; secondly, the coupling member 30 of the driving head 10 is provided with an embossing C4 at an appropriate position on both sides of the convex portion of the driving head convex portion 12, and the wrench thus formed can be referred to From fifteen to seventeenth, the drive head 10 can also be replaced as shown in Fig. 18.

Referring to the fifth embodiment shown in the nineteenth and twentieth embodiments, the difference between the embodiment and the fourth embodiment is that the notch 121 is inclined at an angle, because the handle and the driving head are respectively held by the two hands. When the wrist is not flexed, the two hands naturally form an oblique angle, so that the driving head 10 and the handle 20 are more easily disassembled, and the range in which the steel ball 51 is exposed against the coupling member 30 is increased, and the driving head 10 can be surely Fastened to the handle 20 (this fifth embodiment can also be used in other embodiments).

Referring to the sixth embodiment shown in FIG. 21, in the difference of the embodiment, a switch member E is added, and the switch member E is formed by changing the original steel ball 51 to a snap pin E1. One end of the pin E1 is provided with a slot E11, and a shallow groove E2 is disposed on the rear surface of the left and right arms 22 of the concave pivoting portion 21 for a cover piece E3 to be placed, and a range is provided in the shallow groove E2. a lower deep groove E4, the bottom of the deep groove E4 is in communication with the fifth hole C3 and the first hole 23, and the notch provided by the cover piece E3 is for a button E5 to penetrate, and the button extends below the guide a piece E51, a middle portion of the bottom of the guide piece E51 is provided with a notch for the top piece 40 to pass through, and the two sides of the guide piece E51 are placed in the card slot E11; the handle 20 of the structure is applied to the driving head 10 When installing, please refer to the twenty-second and twenty-third figures, pushing the button E5 of the switch member E backward, indirectly causing the guide piece E51 to drive the engaging pin E1 backward, when the driving head 10 is loaded into the handle 20 At this time, releasing the button E5 causes the spring 52 to push the engaging pin E1 forward against the coupling member 30, and when replacing the other driving head 10, it is only necessary to push the button E5 backward again. The head 10 is detached from the drive replacement.

In summary, the present invention can achieve the following features: 1. The present invention directly buckles the notch to the joint member. Since the gap has only a single entrance and exit, the finite position effect, and the snap action of the card abutment portion under the notch, the operation It is extremely simple, and has the advantages of low cost and easy manufacture. It not only enables the drive head to have a quick change function, but also ensures that the handle and the drive member are properly engaged. It is not necessary to have a structure as in the conventional structure. The holes are made to make the entire volume larger, which is not conducive to narrow space use.

2. The invention regards the joint member as the rotation axis of the drive head, and the rotation shaft is centered, so that the drive head can swing up and down at different angles, and the top block of the top piece is engaged with the circle. The tooth part of the shape can be bent and fixed at different angles and then applied.

1‧‧‧ wrench

10‧‧‧Drive head

11‧‧‧ Drives

12‧‧‧ convex pivot joint

121‧‧‧ gap

122‧‧‧ teeth

123‧‧‧Second hole

124‧‧‧Resistance Department

20‧‧‧Handle

21‧‧‧ concave pivot joint

22‧‧‧Two arms

221‧‧‧through holes

23‧‧‧First hole

30‧‧‧Connected parts

40‧‧‧Top conditions

41‧‧‧ Spring

42‧‧‧Top block

50‧‧‧ card offset

51‧‧‧ steel balls

52‧‧‧ Spring

53‧‧‧塞柱

A1‧‧‧ third hole

B1‧‧‧ inner slot

B2‧‧‧Flexible fasteners

B3‧‧‧Fixed block

B4‧‧‧ Ring groove

C1‧‧‧through hole

C2‧‧‧ fourth hole

C3‧‧‧ fifth hole

C4‧‧‧ embossing

E‧‧‧Switch parts

E1‧‧‧ card sales

E11‧‧‧ card slot

E2‧‧‧ shallow groove

E3‧‧‧ coverslip

E4‧‧‧ deep trough

E5‧‧‧ button

E51‧‧‧ Guide

The first figure is an exploded view of the first embodiment of the present invention.

The first A is a partially enlarged view of the driving head of the first embodiment of the present invention.

The second drawing is a cross-sectional view of a first embodiment of the present invention.

The second A is a partially enlarged view of the first hole of the first embodiment of the present invention.

The third drawing is an external view of the first embodiment of the present invention.

The fourth drawing is another sectional view of the first embodiment of the present invention, showing the rotation of the drive head.

Fig. 5 is a perspective view showing another driving head of the first embodiment of the present invention.

Figure 6 is an exploded view of a second embodiment of the present invention.

Figure 6A is a partially enlarged view of the drive head of the second embodiment of the present invention.

Figure 7 is a cross-sectional view showing a second embodiment of the present invention.

Figure 7A is a partially enlarged view of a third hole in the second embodiment of the present invention.

The eighth figure is an exploded view of a third embodiment of the present invention.

Figure 9 is a cross-sectional view showing a third embodiment of the present invention without a fixing block.

Figure 11 is a cross-sectional view showing a fixing block of a third embodiment of the present invention.

Figure 11 is a cross-sectional view showing the joint member of the third embodiment of the present invention placed in a notch.

Fig. 12 is a cross-sectional view showing the joint member of the third embodiment of the present invention placed in a notch.

Figure 13 is an external view of a third embodiment of the present invention.

Figure 14 is an exploded view of a fourth embodiment of the present invention.

The fifteenth diagram is an external view of a fourth embodiment of the present invention.

Figure 16 is a cross-sectional view showing a fourth embodiment of the present invention.

Figure 17 is another cross-sectional view showing a fourth embodiment of the present invention.

Fig. 18 is a perspective view showing the mounting of another driving head in the fourth embodiment of the present invention.

Figure 19 is a cross-sectional view showing a fifth embodiment of the present invention.

Fig. 20 is a sectional view showing the combination of the fifth embodiment of the present invention.

The twenty-first drawing is an exploded view of a sixth embodiment of the present invention.

Fig. 22 is a sectional view showing the locking of the driving head contact engaging pin of the sixth embodiment of the present invention.

Twenty-third is a sectional view showing the driving head of the sixth embodiment of the present invention, which is disengaged from the engaging pin.

1‧‧‧First wrench

10‧‧‧Drive head

11‧‧‧ Drives

12‧‧‧ convex pivot joint

121‧‧‧ gap

122‧‧‧ teeth

123‧‧‧Second hole

20‧‧‧Handle

21‧‧‧ concave pivot joint

22‧‧‧Two arms

221‧‧‧through holes

23‧‧‧First hole

30‧‧‧Connected parts

40‧‧‧Top conditions

41‧‧‧ Spring

42‧‧‧Top block

50‧‧‧ card offset

51‧‧‧ steel balls

52‧‧‧ Spring

53‧‧‧塞柱

Claims (8)

A wrench capable of quickly replacing a driving head, comprising: a handle, wherein one end has a concave type pivoting portion, and the pivoting portion of the handle has two substantially parallel arms, and the two arms are Forming a space; a driving head, the driving head has a driving member and a convex type pivoting portion, the pivoting portion of the driving head is inserted between the two arm portions; the pivoting portion of the handle is One of the pivoting portions of the driving head is provided with an open-shaped notch, and the other is provided with a constant hole; a coupling member is received in the through hole, wherein the notch is fastened to the coupling member; An inner groove is formed in the inner edge of the notch, and an elastic snap member is received in the inner groove. The elastic snap member catches the joint when the notch is fastened to the joint. According to the first aspect of the invention, the wrench of the driving head can be quickly replaced, wherein at least one ring groove is formed on the surface of the coupling member, and the elastic fastening member catches the coupling member when the notch is fastened to the coupling member. Ring groove. The wrench of the drive head can be quickly replaced according to the first or second aspect of the patent application, wherein the inner groove is provided with a fixing block for the elastic snap member to abut on both sides of the notch. The utility model relates to a wrench capable of quickly replacing a driving head, which mainly comprises: a handle, wherein one end has a concave type pivoting portion, and the pivoting portion of the handle has two substantially parallel arm portions, wherein the two arm portions Forming a space; a driving head, the driving head has a driving member and a convex type pivoting portion, The pivoting portion of the driving head is inserted between the two arm portions; one of the pivoting portion of the handle and the pivoting portion of the driving head is provided with an open gap, and the other is provided with a consistent hole; a coupling member is received in the through hole, wherein the notch is fastened to the coupling member; wherein the notch is provided with a hole, the hole is connected with the notch; a spring is inserted into the hole; a steel ball is placed Into the hole, the steel ball is pushed against the spring and abuts against the gap; wherein the steel ball catches the joint when the notch is fastened to the joint. The wrench of the driving head can be quickly replaced, wherein the end of the hole communicating with the notch is provided with an abutting portion that abuts against the steel ball to prevent the steel ball from falling toward the notch. Out and a portion of the steel ball can protrude toward the gap. The utility model relates to a wrench capable of quickly replacing a driving head, which mainly comprises: a handle, wherein one end has a concave type pivoting portion, and the pivoting portion of the handle has two substantially parallel arm portions, wherein the two arm portions Forming a space; a driving head, the driving head has a driving member and a convex type pivoting portion, the pivoting portion of the driving head is inserted between the two arm portions; the pivoting portion of the handle is provided The opening of the driving head is provided with a constant hole; a coupling member is received in the through hole, wherein the notch is fastened to the coupling member; a hole is formed in the notch, the hole is connected to the notch; a snap pin is inserted into the hole; wherein the engaging pin is provided with a card slot, and a shallow groove is formed on the surface of the pivoting portion of the handle Providing a small deep groove in the shallow groove, the bottom of the deep groove is in communication with the hole, a cover sheet is placed in the shallow groove, and the cover piece is provided with a notch, and a button is inserted into the notch. A guide piece is disposed under the button, and the guide piece is inserted into the card slot. When the button is pushed forward and backward, the guide piece drives the engaging pin to move back and forth. When the engaging pin moves forward, the engaging member is caught. The wrench of the drive head can be quickly replaced, wherein the end of the hole communicating with the notch is provided with an abutting portion that abuts against the engaging pin to prevent the engaging pin. The gap is dropped and a portion of the engaging pin can be projected toward the notch. The wrench for quickly replacing the driver head according to claim 6 or 7, further comprising a spring, the spring being inserted into the hole, the snap pin being pushed by the spring to abut the vicinity of the notch The card pin is engaged with the coupling member when the notch is fastened to the coupling member.