DE202020104301U1 - A holding device for a screwdriver with a seat for the screwdriver bit - Google Patents

Abstract

A holding device for a screwdriver with a receiving seat for the screwdriver bit, comprising:
a main part (1) having inside a receiving chamber (11); two ends of the main part (1) are formed as a fixed end (12) and an open end (13), respectively;
a fixing unit (2) fixed in the receiving chamber (11); the fastening unit (2) consists essentially of a shaft (21), a plug (22), an elastic member (23) and a fastening element (24); one end of the shaft (21) has a plug hole (212); the plug (22) is secured in the plug hole (212); the elastic member (23) is made of a metal material and is formed with at least one elastic piece (231); the elastic member (23) has a perforation (232); the fastener (24) is inserted through the perforation (232) and attached to the plug (22) to secure the elastic member (23) to the plug (22);
a receiving seat (3) movably received in the receiving chamber (11); the receiving seat (3) has a through hole (31) inside; the receiving seat (3) is attached to a periphery of the fastening unit (2); the receiving seat (3) has at least one clamping groove (32); the receiving seat (3) is attached to a cap (34); an engaging part (35) is provided circumferentially on an inner edge of the receiving seat (3); the elastic piece (231) is elastically engaged with the engaging part (35) to secure the cap (34) for closing the receiving chamber (11) at the open end (13).

Description

The present invention relates to a holding device, in particular a holding device for a screwdriver with a receiving seat for the screwdriver bit, in which fatigue or damage to the elastic piece can be prevented in order to extend the service life.

1. 1. Der Zylinder weist einen Aufnahmeraum auf, dessen Position der inneren Endfläche der Kammer entspricht. Eine Feder ist zwischen dem Aufnahmeraum und der inneren Endfläche der Kammer befestigt, um den Zylinder an den Deckel zu drücken und an diesem zu positionieren.
2. 2. Der Deckel weist mehrere beabstandete Vertiefungen auf, die um den Zylinder gebildet sind. Der Zylinder weist übereinstimmende Vorsprünge auf, deren Position den Vertiefungen des Deckels entsprechen. Beim Drehen des Zylinders in der Kammer sind die Vertiefungen und Vorsprünge für die Knotenpositionierung maßgebend.

Various screwdrivers with a retractable screwdriver bit are available on the market. For example, an improved screwdriver is described in Taiwanese Utility Model Publication No. M267031. This improved screwdriver includes a handle one end of which is formed with a cylindrical chamber. The outside of the handle has a hole connected to this chamber. The opening of the chamber is closed with a cap. The cap has a guide hole in an eccentric position relative to the chamber. A circular cylinder is provided in the chamber. One end of the cylinder is pivotally attached to the inner end surface of the chamber while the other end of the cylinder is pivotally attached to the lid. The outer circumference of the cylinder has several spaced apart receiving grooves all around. These grooves are connected to the guide hole of the cap in order to insert or remove the screwdriver bits from the grooves. The improved screwdriver has two features as described below.

1. 1. The cylinder has a receiving space, the position of which corresponds to the inner end surface of the chamber. A spring is attached between the receiving space and the inner end surface of the chamber to press and position the cylinder against the lid.
2. 2. The lid has a plurality of spaced apart recesses formed around the cylinder. The cylinder has corresponding projections, the position of which corresponds to the depressions in the cover. When the cylinder is turned in the chamber, the indentations and protrusions are decisive for the node positioning.

With these two special arrangements of the structure, the cylinder has the advantage of precise positioning with the screwdriver bits being easily inserted into and removed from the chamber.

The handle mentioned in the utility model mentioned above has three buckle notches which are evenly spaced around the outer circumference of the opening of the chamber. The lid has three protruding buckle bars in line with the buckle notches of the handle. The three buckle bars are strapped to the three buckle notches and secured to close the chamber. Since the three buckle bars of the lid are integrally formed from a plastic material, the elasticity of the plastic material can easily deteriorate or this material can be easily damaged after long-term use due to embrittlement. As a result, the chamber cannot be closed. Under certain circumstances, the entire screwdriver can no longer be used. The inventor of the present invention has therefore devoted himself to solving these problems based on his many years of practical experience.

In view of the above-described drawbacks, the main object of the present invention is to provide a screwdriver holding device having a screwdriver bit socket, comprising a main part, a fastening unit and a socket.

The main part has a receiving chamber inside. Two ends of the main part are formed as a fixed end and an open end, respectively. The fastening unit is fastened in the receiving chamber. The fastening unit consists of a shaft, a plug, an elastic member and a fastening element. One end of the shaft has a plug hole. The plug is fastened in the plug hole. The elastic member is made of a metal material and is formed with at least one elastic piece. The elastic member has a perforation. The fastener is inserted through the perforation and attached to the plug to secure the elastic member to the plug. The receiving seat is movably arranged in the receiving chamber. The receiving seat has a through hole inside. The receiving seat is attached to a periphery of the fastening unit. The receiving seat has at least one clamping groove. A cap is attached to the receiving seat. An engaging part is immediately provided on the inner edge of the receiving seat. The elastic piece is elastically engaged with the engaging part to secure the cap for closing the receiving chamber at the open end.

An engagement block is preferably arranged in the fixed end. Two ends of the engagement block have an insertion hole and a threaded side, respectively. Another end of the shaft is formed with a threaded portion. The threaded portion is fastened with a thread on the threaded side.

Preferably, one side of the plug opposite the plug hole has a recessed one cruciform part on. The elastic member has a matching cross shape. The elastic member engages the recessed part which must be restricted so that the elastic member is not rotated relative to the plug.

A screw is preferably used as the fastening element. The recessed part has a screw hole. The fastener is inserted through the perforation and screwed into the screw hole.

The stopper preferably has a groove. If pressure is exerted on the plug by the shaft, an additional contraction and deformation inwards is generated with the groove.

Preferably the screw hole is connected to the groove. The fastening element is screwed into the screw hole in order to exert an outward force on the plug and thus to fix the plug firmly to the shaft.

The groove preferably has a cross shape.

Preferably, the at least one elastic piece of the elastic member consists of four elastic pieces that protrude outward.

A limiting ring is preferably placed on one end of the receiving seat. The limiting ring is received in the receiving chamber. A flange is formed on an inner edge of the end on which the limiting ring of the receiving seat is placed. The flange has an inner diameter that is smaller than an outer diameter of the plug. When the receiving seat is pulled out, the flange is blocked with the plug so that the receiving seat cannot be completely separated from the receiving chamber.

Preferably, an annular protruding block is formed on the periphery of another end of the receiving seat. An annular groove is formed on an inner edge of the cap. The annular protruding block is engaged with the annular groove so that the receiving seat is movably attached to the cap.

1. 1. Da das elastische Glied mit den vier elastischen Stücken aus einem Metallmaterial besteht, kann dieses über eine lange Zeitdauer verwendet werden, wobei dieses für Ermüdungen und Beschädigungen deutlich weniger anfällig ist, so dass dessen Nutzungsdauer verlängert ist.
2. 2. Da der Stopfen und das elastische Glied voneinander getrennt werden können, kann das elastische Glied, dessen elastische Stücke verformt oder beschädigt wurden, leicht ausgewechselt werden, um dessen Nutzungsdauer zu verlängern.

According to the technical solutions described above, the following effects can be achieved:

1. 1. Since the elastic member with the four elastic pieces is made of a metal material, it can be used over a long period of time, which is much less susceptible to fatigue and damage, so that its useful life is extended.
2. 2. Since the plug and the elastic member can be separated from each other, the elastic member whose elastic pieces have been deformed or damaged can be easily replaced to extend its useful life.

• 1 zeigt eine Explosionsansicht nach einem Ausführungsbeispiel der vorliegenden Erfindung;
• 2 zeigt eine perspektivische Ansicht nach einem Ausführungsbeispiel der vorliegenden Erfindung;
• 3 zeigt eine Querschnittansicht dem Schnitt III-III in der 2 entlang;
• 4 zeigt eine schematische Ansicht nach einem Ausführungsbeispiel der vorliegenden Erfindung bei der Verwendung;
• 5 zeigt eine vergrößerte Ansicht des Kreises V in der 3;
• 6 zeigt eine schematische Ansicht nach einem Ausführungsbeispiel der vorliegenden Erfindung zum Darstellen, dass der Aufnahmesitz aus dem Hauptteil herausgezogen ist; und
• 7 zeigt eine Querschnittansicht dem Schnitt VII-VII in der 6 entlang.

The invention is described in detail below on the basis of preferred exemplary embodiments with reference to the drawing. In the drawing shows:

• 1 Figure 12 shows an exploded view according to an embodiment of the present invention;
• 2 Figure 12 shows a perspective view according to an embodiment of the present invention;
• 3 shows a cross-sectional view of the section III-III in FIG 2 along;
• 4th Figure 3 shows a schematic view of an embodiment of the present invention in use;
• 5 FIG. 13 shows an enlarged view of the circle V in FIG 3 ;
• 6th Fig. 13 is a schematic view according to an embodiment of the present invention for showing that the receiving seat is drawn out from the main part; and
• 7th shows a cross-sectional view of the section VII-VII in FIG 6th along.

The 1 , 2 and 3 show that a holding device of a screwdriver with a receiving seat for the screwdriver bit according to an embodiment of the present invention has a main part ( 1 ), a fastening unit ( 2 ) and an admission seat ( 3 ) includes.

The main part ( 1 ) has a receiving chamber ( 11 ) on. Two ends of the main part ( 1 ) are as a fixed end ( 12 ) or open end ( 13 ) educated. The end of the festival ( 12 ) and the open end ( 13 ) are with the receiving chamber ( 11 ) connected. An engagement block ( 14th ) is in the fixed end ( 12 ) intended. Two ends of the engagement block ( 14th ) have an insertion hole ( 141 ) or one thread side ( 142 ) on. The insertion hole ( 141 ) corresponds to the fixed end ( 12 ).

The fastening unit ( 2 ) is in the receiving chamber ( 11 ) attached. The fastening unit ( 2 ) consists essentially of a shaft ( 21st ), a plug ( 22nd ), an elastic member ( 23 ) and a fastening element ( 24 ). Two ends of the Wave ( 21st ) are with a threaded section ( 211 ) or have a plug hole ( 212 ) on. The threaded section ( 211 ) is via a thread on the thread side ( 142 ) of the engagement block ( 14th ) attached. The stopper ( 22nd ) has a cross-shaped groove ( 221 ) on. When applying pressure from the shaft ( 21st ) on the stopper ( 22nd ) is connected to the groove ( 221 ) creates an additional contraction and deformation inwards (towards the center point) in order to make the stopper ( 22nd ) in the plug hole ( 212 ) to be able to attach. One side of the plug ( 22nd ) the plug hole ( 212 ) opposite is with a cruciform recessed part ( 222 ) educated. The recessed part ( 222 ) has a screw hole ( 223 ) on. The screw hole ( 223 ) is with the groove ( 221 ) connected. The elastic member ( 23 ) consists essentially of a metal material and has a cross shape. The elastic member ( 23 ) has four outward protruding pieces ( 231 ) educated. The elastic member ( 23 ) has a perforation ( 232 ) on. The fastener ( 24 ) is through the perforation ( 232 ) and inserted into the screw hole ( 223 ) screwed in. As a fastening element ( 24 ) a screw is used. When screwing in the fastener ( 24 ) into the screw hole ( 223 ) to apply an outward force to the stopper ( 22nd ), the plug ( 22nd ) firmly on the shaft ( 21st ) fixed to the elastic member ( 23 ) to the plug ( 22nd ) to fix. The elastic member ( 23 ) is with the recessed part ( 222 ) engages, which must be restricted so that the elastic member ( 23 ) relative to the plug ( 22nd ) is not rotated.

The admission seat ( 3 ) is movable in the receiving chamber ( 11 ) arranged. The admission seat ( 3 ) has a through hole inside ( 31 ) on. The admission seat ( 3 ) is on the periphery of the fastening unit ( 2 ) appropriate. The periphery of the receiving seat ( 3 ) has several clamping grooves ( 32 ) to clamp and hold several screwdriver bits in it. On one end of the admission seat ( 3 ) is a limiting ring ( 33 ) put on. The limiting ring ( 33 ) is in the receiving chamber ( 11 ) recorded. The other end of the receiving seat ( 3 ) is movable with a cap ( 34 ) engaged. On the inside edge of the receiving seat ( 3 ) is an engaging part ( 35 ) intended. The four elastic pieces ( 231 ) are elastic with the engagement part ( 35 ) engaged to the cap ( 34 ) to close the receiving chamber ( 11 ) to the open end ( 13 ) to fix. A ring-shaped protruding block ( 36 ) is on the periphery of the other end of the receiving seat ( 3 ) appropriate. An annular groove ( 341 ) is on an inner edge of the cap ( 34 ) put on. The annular protruding block ( 36 ) is with the ring groove ( 341 ) engaged to the receiving seat ( 3 ) movable to the cap ( 34 ) to fix. The inside edge of the end on which the limiting ring ( 33 ) of the admission seat ( 3 ) is attached is fitted with a flange ( 37 ) educated. The inside diameter of the flange ( 37 ) is smaller than the outside diameter of the plug ( 22nd ). When pulling out the receiving seat ( 3 ) the flange ( 37 ) with the stopper ( 22nd ) blocked so that the receiving seat ( 3 ) not completely removed from the receiving chamber ( 11 ) can be separated (see 7th ).

The 1 and the 4th show that when using a screwdriver bit socket ( A. ) over the feast end ( 12 ) of the main part ( 1 ) into the insertion hole ( 141 ) of the engagement block ( 14th ) is inserted and secured in it. The main part ( 1 ) can be used to tighten or loosen a screw with the screwdriver bit ( A. ) are recorded. The other screwdriver bits ( A. ) in different sizes can be stored in the receiving chamber ( 11 ) be kept. First, the cap ( 34 ) at the open end ( 13 ) of the main part ( 1 ) pulled out to the engagement part ( 35 ) the inside edge of the receiving seat ( 3 ) of the four elastic pieces ( 231 ) so that it can be removed from the four elastic pieces ( 231 ) is no longer bent elastically. The admission seat ( 3 ) and the cap ( 34 ) are pulled out with the flange ( 37 ) of the limiting ring ( 33 ) with the stopper ( 22nd ) is blocked so that the receiving seat ( 3 ) not completely removed from the receiving chamber ( 11 ) can be separated (see 6th and 7th ), after which the other screwdriver bits ( A. ) one after the other in the clamping grooves ( 32 ) are pinched and held. The admission seat ( 3 ) is then placed in the receiving chamber ( 11 ) of the main part ( 1 ) pushed, whereby the limiting ring ( 33 ) at one end of the receiving seat ( 3 ) into the receiving chamber ( 11 ) is inserted and secured in it while the cap ( 34 ) accordingly with the open end ( 13 ) of the main part ( 1 ) is engaged. With the four elastic pieces ( 231 ) of the elastic member ( 23 ) on the inside edge of the receiving seat ( 3 ) each elastic with the engagement part ( 35 ) are engaged, the cap ( 34 ) to the open end ( 13 ) secured (see 5 ) to the receiving chamber ( 11 ) close. Since the elastic member ( 23 ) with the four elastic pieces ( 231 ) consists of a metal material, it can be used long-term, as this is significantly less prone to fatigue and damage and thus its useful life is extended.

The 1 shows that to replace the four elastic pieces ( 231 ) of the elastic member ( 23 ), if they are deformed or damaged, only the fastening element ( 24 ) on the plug ( 22nd ) must be unscrewed because the plug ( 22nd ) and the elastic member ( 23 ) can be separated from each other so that the elastic member ( 23 ) from the stopper ( 22nd ) to be separated. Then the fastening element ( 24 ) a new elastic member ( 23 ) to the plug ( 22nd ) screwed to the elastic member ( 23 ) easy and practical to replace and thus extend its useful life.

While certain embodiments of the present invention have been described in detail for purposes of illustration, various modifications and improvements can be made without departing from the spirit and scope of the present invention.

List of reference symbols

1

Bulk

11

Receiving chamber

12

Fixed end

13

Open end

14th

Engagement block

141

Insertion hole

142

Threaded side

2

Fastening unit

21st

wave

211

Threaded section

212

Plug hole

22nd

Plug

221

Cross-shaped groove

222

Cross-shaped recessed part

223

Screw hole

23

Elastic link

231

Elastic piece

232

Perforation

24

Fastener

3

Admission seat

31

Through hole

32

Clamping groove

33

Limiting ring

34

cap

341

Ring groove

35

Engagement part

36

Annular protruding block

37

flange

A.

Screwdriver bit

Claims (10)

A holding device for a screwdriver with a receiving seat for the screwdriver bit, comprising: a main part (1) having inside a receiving chamber (11); two ends of the main part (1) are formed as a fixed end (12) and an open end (13), respectively; a fixing unit (2) fixed in the receiving chamber (11); the fastening unit (2) consists essentially of a shaft (21), a plug (22), an elastic member (23) and a fastening element (24); one end of the shaft (21) has a plug hole (212); the plug (22) is secured in the plug hole (212); the elastic member (23) is made of a metal material and is formed with at least one elastic piece (231); the elastic member (23) has a perforation (232); the fastener (24) is inserted through the perforation (232) and attached to the plug (22) to secure the elastic member (23) to the plug (22); a receiving seat (3) movably received in the receiving chamber (11); the receiving seat (3) has a through hole (31) inside; the receiving seat (3) is attached to a periphery of the fastening unit (2); the receiving seat (3) has at least one clamping groove (32); the receiving seat (3) is attached to a cap (34); an engaging part (35) is provided circumferentially on an inner edge of the receiving seat (3); the elastic piece (231) is elastically engaged with the engaging part (35) to secure the cap (34) for closing the receiving chamber (11) at the open end (13). The holding device of a screwdriver with a seat for the screwdriver bit according to Claim 1 wherein an engagement block (14) is provided in the fixed end (12); two ends of the engaging block (14) have an insertion hole (141) and a threaded side (142), respectively; another end of the shaft (21) is formed with a threaded section (211), the threaded section (211) being fastened to the threaded side (142) via a thread. The holding device of a screwdriver with a seat for the screwdriver bit according to Claim 1 or 2 wherein one side of the plug (22) opposite to the plug hole (212) is formed with a cruciform recessed portion (222); the elastic member (23) has a corresponding cross shape, and the elastic member (23) is engaged with the recessed part (222) to be restricted so that the elastic member (23) is not rotated relative to the plug (22) . The holding device of a screwdriver with a seat for the Screwdriver bit after Claim 3 , wherein a screw is used as the fastening element (24); the recessed part has a screw hole (223); the fastening element (24) is inserted through the perforation (232) and screwed into the screw hole (223). The holding device of a screwdriver with a seat for the screwdriver bit according to Claim 3 or 4th wherein the plug (22) has a groove; when a pressure is exerted by the shaft (21) on the plug (22) with the groove (221) an additional contraction and deformation inwards (towards the center) is produced. The holding device of a screwdriver with a seat for the screwdriver bit according to one of the Claims 3 to 5 wherein the screw hole (223) is connected to the groove; the fastening element (24) is screwed into the screw hole (223) in order to exert an outward force on the plug (22) and thus to fix the plug (22) firmly to the shaft (21). The holding device of a screwdriver with a seat for the screwdriver bit according to one of the Claims 3 to 6th , wherein the groove has a cross shape. The holding device of a screwdriver with a seat for the screwdriver bit according to one of the Claims 1 to 7th wherein the at least one elastic piece (231) of the elastic member (23) is formed with four outwardly protruding elastic pieces (231). The holding device of a screwdriver with a seat for the screwdriver bit according to one of the Claims 1 to 8th wherein a limiting ring (33) is placed on one end of the receiving seat (3); the limiting ring (33) is received in the receiving chamber (11); an inner edge of the end on which the limiting ring (33) of the receiving seat (3) is fitted is formed with a flange (37); the flange (37) has an inner diameter that is smaller than an outer diameter of the plug (22); When pulling out the receiving seat (3) the flange (37) is blocked with the plug (22) so that the receiving seat (3) cannot be completely separated from the receiving chamber (11). The holding device of a screwdriver with a seat for the screwdriver bit according to one of the Claims 1 to 9 wherein an annular protruding block (36) is provided on a periphery of another end of the receiving seat (3); an annular groove (341) is formed on an inner edge of the cap (34); the annular protruding block (36) is engaged with the annular groove (341) to movably fix the receiving seat (3) to the cap (34).

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