DE102016115578B3 - Ratchet wrench with a snap connection structure - Google Patents

Abstract

Ratchet wrench having a latching connection structure structurally having a key body (10) having a key head (11) in which a receiving space (13) is formed, wherein the head side of the receiving space (13) of the key head (11) has a projection (12) is formed, the front side has an opening and on both sides each have a positioning hole (15), and wherein on the bottom side in the receiving space (13) an arcuate oblique groove (14) is formed. A ratchet head (20) is located in the receiving space (13) having on both sides under its tooth portion (21) each have a receiving hole (22) in which a steel ball (24) is arranged, wherein the steel ball (24) is not completely through the Receiving hole (22) roll inwardly and only partially protrude from the receiving hole (22), and wherein above the tooth portion (21) an annular groove (23) is formed, and wherein in the middle of the ratchet head (20) has a polygonal recess (25) is formed, and wherein above the recess (25) has a circular groove (26) is formed. The projection (12) formed on the key head (11) can be covered at the top with a lid body (30), wherein the lid body (30) has a through hole (31) in the center and an opening at the rear, and wherein on the front side on the lid body (30 ) an inwardly curved projection (34) is formed, which has a projecting displacement portion (35) on the underside, wherein the displacement portion (35) when mating against the upper edge of the annular groove (23) ratchet head 20 abuts, and wherein the lid body (30 ) has on both sides at a position corresponding to the positioning hole (15) of the projection (12) each a pin hole (32) in which a pivot (33) is arranged, wherein the pivot pin (33) extends through to the positioning hole (15). Between the circular groove (26) of the ratchet head (20) and the lid body (30) an elastic element (40) is arranged.

Description

The invention relates to a ratchet wrench with a snap-in connection structure, in particular a ratchet wrench, the ratchet head automatically retract inwardly, the ratchet head cooperating with a control lever structure of a top side arranged on the ratchet wrench lid body so that a plugged into the ratchet wrench insert quickly through both sides of the ratchet head attached steel balls locked or disconnected.

Hand tools are currently in widespread use. For example, a socket set with a plurality of sockets and a corresponding drive handle is particularly popular because the socket set is suitable for tightening or loosening screw in various situations. In such a socket wrench set the drive handle is usually provided with a continuous recess in which a locking steel ball is resiliently arranged so that a forcibly inserted socket wrench is pressed against the steel ball, whereby a positioning of the socket in the recess of the drive handle is realized ,

Although the above-mentioned construction enables the positioning of the socket wrench insert, however, it has a drawback that the socket wrench insert is engaged with or disengaged from the recess of the drive handle by a positive manipulation, resulting in not only a troublesome handling but also too can cause wear of the mentioned construction. Therefore, the said construction can be further improved.

The DE 10 2014 106 032 A1 discloses a socket with a locking mechanism. The socket wrench comprises a key body, a drive seat and a locking ring. Here, the drive seat is received in a head of the key body and has a center hole, while in and through the inner wall of an inner wall, a hole and on the outer periphery of an opening are formed. The safety ring mounted around the safety seat is formed with a hook portion and a straight portion.

From the US 2015/0 290 783 A1 and the US 2015/0 258 666 A1 are more sockets known.

Such ratchet / socket wrench still leave something to be desired.

The invention will provide a ratchet wrench, the ratchet head can be moved thanks to a arranged in its key head structure inside when a socket insert is inserted into a receiving space of the ratchet wrench, wherein the inside mounted in the receiving space steel balls are drawn inwards, so that the socket wrench further obstacle-free is introduced into the receiving space until the steel balls are engaged in a locking groove formed on the outside of the socket wrench. Then the ratchet head is returned to its original position, whereby the socket wrench insert can be fastened by latching connection.

In addition, the invention provides a ratchet wrench in which a lid body with a control lever structure is arranged on the top side of the key head. When the socket wrench and the ratchet wrench are latchably connected with each other, the lid body can be pushed rearwardly so that the lid body is lifted upwardly by the control lever structure upward, the lid body is pushed with its displacement portion against an upper edge of an annular groove formed on the top of the ratchet head, to pick up the ratchet head and retract inward so that the steel balls are in a mobile state, allowing for a quick release of the socket wrench insert from the ratchet wrench.

The invention has in particular the features specified in claim 1. Advantageous embodiments of the invention are specified in the subclaims.

In the following the invention and its embodiments will be explained in more detail with reference to the drawing. In the drawing shows:

1 a perspective view of an embodiment of a ratchet wrench according to the invention;

2 an exploded perspective view of the embodiment of a ratchet wrench according to the invention;

3 a perspective view of a lid body according to the invention, which is shown in section;

4 a side view I of the embodiment of a ratchet wrench according to the invention;

5 a section I through the ratchet wrench according to the invention;

6 a section II through the ratchet wrench according to the invention;

7 the procedure I for operating the ratchet wrench according to the invention;

8th the procedure II for operating the ratchet wrench according to the invention;

9 the procedure III for operating the ratchet wrench according to the invention;

10 the procedure IV for operating the ratchet wrench according to the invention;

11 the procedure V for operating the ratchet wrench according to the invention;

12 the procedure VI for operating the ratchet wrench according to the invention;

13 the procedure VII for operating the ratchet wrench according to the invention;

14 a side view II of the embodiment of a ratchet wrench according to the invention; and

15 the procedure VIII for operating the ratchet wrench according to the invention.

How out 1 to 6 can be seen, the ratchet wrench according to the invention comprises a key body 10 , the one key head 11 in which a receiving space 13 is trained. At the head of the recording room 13 of the key head 11 is a lead 12 formed, the front side an opening and on both sides each have a positioning hole 15 having. Bottom side in the recording room 13 is an arcuate oblique groove 14 educated. In the recording room 13 becomes a ratchet head 20 appropriate. The ratchet head 20 has bilateral below its tooth portion 21 one recording hole each 22 in which a steel ball 24 is arranged, with the steel ball 24 not completely through the recording hole 22 roll inwards and instead only partially from the receiving hole 22 stand out. Above the tooth portion is an annular groove 23 educated. In the middle of the ratchet head 20 is a polygonal recess 25 educated. Above the recess 25 is a circular groove 26 educated. Incidentally, the key is on the head 11 trained lead 12 above with a lid body 30 covered, the lid body 30 in the middle a continuous hole 31 and has an opening on the back side. Front side of the lid body 30 is an inwardly arched ledge 34 formed, the underside of a projecting displacement section 35 wherein the displacement section 35 when mating against the upper edge of the annular groove 23 of the ratchet head 20 is applied. In addition, the lid body 30 on both sides of a positioning hole 15 of the projection 12 corresponding place ever a pin hole 32 in which a pivot 33 is arranged, wherein the pivot 33 up to the positioning hole 15 is inserted through. In addition, it becomes an elastic element 40 between the circular groove 26 of the ratchet head 20 and the lid body 30 appropriate.

With reference to the accompanying drawings, 7 to 12 , becomes a socket wrench 50 into the recess 25 plugged in, with the socket wrench 50 on the head side against the steel balls 24 is pressed so that the ratchet head 20 with being moved inside. During the shifting the steel balls become 24 from the arcuate oblique groove 14 brought, causing the steel balls 24 get a clearance to retract, so that the socket wrench 50 continue in the recess 25 can be inserted until an outside of the socket 50 trained locking groove 51 at the same height as the receiving holes 22 of the ratchet head 20 so that the steel balls 24 get a free space to move outwards, thereby realizing that the steel balls 24 in the locking groove 51 of the socket wrench insert 50 engage when the ratchet head 50 through a through the elastic element 40 generated restoring force returns to its original position to the socket 50 to limit and thereby secure.

In 13 to 15 the ratchet wrench according to the invention is shown with a latching connection structure in an assembled state, wherein the socket wrench insert 50 by snapping into the ratchet head 20 the ratchet wrench is attached. In this state, the lid body 30 pressed back side, wherein the lid body 30 on the front by a due to the pin holes 32 and the pivot 33 leveraged action is lifted upwards, so that the displacement section 35 of the lid body 30 against the upper edge of the annular groove 23 is pressed to the ratchet head 20 to draw inwards, causing the steel ball 24 from the arcuate oblique groove 14 is disconnected and is in a mobile state, causing a quick Lostrennen the socket wrench 50 allows.

LIST OF REFERENCE NUMBERS

10

 key body

11

 key head

12

 head Start

13

 accommodation space

14

 arcuate oblique groove

15

 positioning

20

 ratchet head

21

 tooth portion

22

 receiving hole

23

 annular groove

24

 steel ball

25

 recess

26

 circular groove

30

 cover body

31

 through hole

32

 mortise

33

 pivot

34

 inwardly arched ledge

35

 shifting section

40

 elastic element

50

 Socket

51

 locking groove

Claims (4)

Ratchet wrench with a snap connection structure structurally a key body ( 10 ) having a key head ( 11 ) in which a receiving space ( 13 ) is formed, wherein the head side of the receiving space ( 13 ) of the key head ( 11 ) a lead ( 12 ) is formed, the front side an opening and on both sides depending on a positioning hole ( 15 ), and wherein on the bottom side in the receiving space ( 13 ) an arcuate oblique groove ( 14 ), characterized in that - in the receiving space ( 13 ) a ratchet head ( 20 ) located on both sides under its tooth portion ( 21 ) one recording hole each ( 22 ), in which a steel ball ( 24 ), the steel ball ( 24 ) not completely through the recording hole ( 22 ) roll inwards and instead only partially from the receiving hole ( 22 protrude, and wherein above the tooth portion ( 21 ) an annular groove ( 23 ) is formed, and wherein in the middle of the ratchet head ( 20 ) a polygonal recess ( 25 ) is formed, and wherein above the recess ( 25 ) a circular groove ( 26 ) is trained; - that on the key head ( 11 ) trained advantage ( 12 ) above with a lid body ( 30 ) is coverable, wherein the lid body ( 30 ) in the middle a through hole ( 31 ) and an opening on the rear side, and wherein on the front side on the lid body ( 30 ) an inwardly arched projection ( 34 ) is formed, the underside a projecting displacement section ( 35 ), wherein the displacement section ( 35 ) when mating against the upper edge of the annular groove ( 23 ) of the ratchet head 20 is applied, and wherein the lid body ( 30 ) on both sides of a positioning hole ( 15 ) of the projection ( 12 ) corresponding to each pin hole ( 32 ), in which a pivot ( 33 ) is arranged, wherein the pivot ( 33 ) to the positioning hole ( 15 ) passes through; and - that between the circular groove ( 26 ) of the ratchet head ( 20 ) and the lid body ( 30 ) an elastic element ( 40 ) is arranged. Ratchet wrench according to claim 1, characterized in that the socket ( 50 ) when inserted into the recess ( 25 ) on the head side against the steel balls ( 24 ) is depressible, so that the ratchet head ( 20 ) is shifted inwards, wherein the steel balls ( 24 ) during the displacement from the arcuate oblique groove ( 14 ), whereby an inner space for the steel balls ( 24 ), so that the socket ( 50 ) further into the recess ( 25 ) can be introduced. Ratchet wrench according to claim 1 or 2, characterized in that after the steel balls ( 24 ) get into the inner space, the socket ( 50 ) further into the recess ( 25 ), and wherein, when an outside of the socket ( 50 ) formed locking groove ( 51 ) at the same height as the receiving holes ( 22 ) of the ratchet head ( 20 ), the steel balls ( 24 ) an external clearance is available, so that it is realized that the steel balls ( 24 ) in the locking groove ( 51 ) of the socket ( 50 ), when the ratchet head ( 50 ) returns to its original position. Ratchet wrench according to claim 1, 2 or 3, characterized in that when the socket ( 50 ) and the ratchet head ( 20 ) are latched together, the lid body ( 30 ) can be pressed on the back side so that the lid body ( 30 ) at the front by a due to the pin holes ( 32 ) and the pivot ( 33 ) is lifted upwards, wherein the displacement section ( 35 ) of the lid body ( 30 ) against the upper edge of the annular groove ( 23 ) is pressed to the ratchet head ( 20 ) to draw inwards, whereby the steel balls ( 24 ) of the arcuate oblique groove ( 14 ) and are displaceable, which is a quick Lostrennen the socket ( 50 ) from the ratchet head ( 20 ).

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