CN107980018B

CN107980018B - Ut socket unit for power wrench

Info

Publication number: CN107980018B
Application number: CN201580080780.8A
Authority: CN
Inventors: A·杜布斯
Original assignee: Atlas Copco Industrial Technique AB
Current assignee: Atlas Copco Industrial Technique AB
Priority date: 2015-06-11
Filing date: 2015-06-11
Publication date: 2019-11-22
Anticipated expiration: 2035-06-11
Also published as: EP3307485B1; EP3307485A1; JP6596154B2; WO2016198115A1; CN107980018A; JP2018520900A

Abstract

A kind of ut socket unit for power wrench, the ut socket unit include tubular sleeve ontology (10；50), the tubular sleeve ontology (10；50) front end (13；53) it is suitable for engaging with nut connector and rear end (11；51) it is suitably connected to the output shaft of power wrench, and stop mechanism (15 is set；55) to by sleeve body (10；50) it is locked to the output shaft of power wrench, wherein stop mechanism (15；55) include can be axially displaced motor-driven casing (19；59), wherein motor-driven casing (19；59) relative to sleeve body (10；50) it is freely rotatable.For the purpose of protection operator, also in sleeve body (10；50) front end (13；53) rotatable protection sleeve pipe (30 is set；70).

Description

Ut socket unit for power wrench

Technical field

The present invention relates to a kind of ut socket (nut socket) unit, the ut socket unit is to be attached to be pulled to power Pincers, and the stop device of the output shaft including ut socket unit to be locked to power wrench.

Background technique

The rear end of well known standard type ut socket has the recess portion of square cross section, and the recess portion is intended to receive power The square end of wrench output shaft.The front end of ut socket has the inside for being adapted to fit with nipple type to be tightened Cross-sectional shape, such as hex shape.Ut socket is additionally provided with stop device and pulls to which ut socket is locked to power The output shaft of pincers.The stop device can be different type but in latched position and can usually release by external motor-driven casing It puts and is moved between position.

The problem related to this ut socket be, motor-driven casing and ut socket synchronous rotary and with regard to operator and Speech may constitute risk of injury.And the front of ut socket outstanding may constitute and potentially be caught cold in front of motor-driven casing Nearly, the case where such as gloves of operator are entangled between ut socket and target.

Summary of the invention

Subject of the present invention is to avoid above-mentioned safety problem by providing a kind of improved ut socket unit, described Ut socket unit includes rotatable ut socket ontology and relative to the rotatable outer sleeve of ut socket ontology Element.

Another theme of the invention is to provide a kind of ut socket unit, and the ut socket unit includes rotatable Ut socket ontology and make ut socket ontology be connected to power wrench output shaft stop device, wherein stop device include External motor-driven casing, the motor-driven casing in outside are freely rotatable problem of avoiding injury relative to ut socket ontology.

Other objects and advantages of the present invention will be presented by following specification and claim.

Detailed description of the invention

Detailed description of the present invention preferred embodiment referring to the attached drawing below.

In the accompanying drawings:

Fig. 1 shows the longitudinal cross-section of the ut socket unit of an embodiment according to the present invention, it is shown that stop Device is in its latched position.

Fig. 2 shows the rear end view of the ut socket unit of Fig. 1.

Fig. 3 shows the front end view of the ut socket unit of Fig. 1.

Fig. 4 shows the partial side view in cross section of the ut socket unit of alternate embodiment according to the present invention.

Fig. 5 shows the rear end view of the ut socket unit of Fig. 4.

Fig. 6 shows the front end view of the ut socket unit of Fig. 4.

Specific embodiment

Ut socket unit shown in Fig. 1-4 includes tubular sleeve ontology 10, the rear end of the tubular sleeve ontology 10 Portion 11 includes square end of the recess portion 12 of square cross section to receive power wrench output shaft.The formation of sleeve body 10 There is front end 13, the front end 13 has hex pockets 14 to the hexagonal head or spiral shell with nipple to be tightened Mother's engagement.

Stop mechanism 15 is arranged in the rear end of sleeve body 10 11 to pull ut socket unit is locked to power The output shaft of pincers.The stop mechanism 15 includes multiple balls 16, and the ball 16 is contained in the side opening mouth 18 of sleeve body 10 And it is intended to cooperate with the output shaft of power wrench that ut socket unit is locked to the output shaft.Motor-driven casing 19 exists The outside of sleeve body 10 can be axially displaced between latched position and releasing position, and ball 16 is protected under the latched position Be held in its interior location to power operated wrench output shaft realization be engaged by locking, under the releasing position ball 16 radially to It is moved freely outside so that ut socket unit is discharged from power wrench output shaft.The rear end of motor-driven casing 19 is provided with internal annular Recess portion is intended to allow ball 16 when motor-driven casing 19 occupies its front position (i.e. releasing position) Shi Suoshu internal annular recess portion Release movement outward.Under the position of motor-driven casing 19 and ball 16, ut socket unit and power operated wrench output shaft are certainly By being disconnected.In order to obtain the improved grasping force on motor-driven casing 19, motor-driven casing 19 is provided with outer tube 21, described outer Casing 21 is preferably made of plastic material and is provided with the decorative pattern for increasing friction in its envelope surfaces.

Multiple springs 22 are set between the support ring 23 on motor-driven casing 19 and sleeve body 10, thus in motor-driven casing Ball lock direction on 19 along motor-driven casing 19 is biased power.Support ring 23 be freely rotatable in sleeve body 10 and It is supported by the locking ring 25 being mounted in the circumferential recess 26 of sleeve body 19 along axial direction.Spring 22 is contained in motor-driven casing In 19 hole 24, it is meant that spring 22 is forced locking relative to motor-driven casing 19 to synchronous rotation.Locking ring 25 Outer diameter is sufficiently small to allow motor-driven casing 19 to pass through on the outside when being moved to front releasing position from rear latched position.

In order to make stop mechanism 15 be moved to its releasing position from its latched position (as shown in Figure 1), it is necessary to forwards Motor-driven casing 19 is pushed upward against the biasing force of spring 22, so that ball 16 be allowed to be displaced outwardly the ring into motor-driven casing 19 Shape recess portion, therefore discharge ut socket unit and power wrench output shaft.

It is freely rotatable by the way that motor-driven casing 19 and its outer tube 21 are disposed relative to sleeve body 19, is connect in screw thread Head protects operators against the case where being for example entangled between ut socket unit and workpiece due to gloves during tightening operation Caused by injury.

The front end 13 of sleeve body 10 can have different length according to the type of nipple to be tightened, especially In the case where the front end of extension 13, it is understood that there may be the risk of injury with motor-driven 19 same type of casing snarls operator Gloves.In order to avoid the risk of injury, the front end 13 of sleeve body 10 is provided with rotatable protection sleeve pipe 30.It should Protection sleeve pipe 30 is axially locked by inner circumferential ridge 31 relative to sleeve body 10, the inner circumferential ridge 31 and sleeve sheet Circumferential recess 32 in body 10 engages.

Protection sleeve pipe 30 is preferably by having the plastic material (such as POM) of opposite low-friction coefficient to be made to help to cover It is readily relatively moved between pipe 19,30 and sleeve body 10, when being mounted in sleeve body 10, protection sleeve pipe 30 is along axial direction Being locked to sleeve body 10 makes internal ridge 31 bite groove 32 via the flexible deformation of casing 30.

In embodiment of the present invention as Figure 4-Figure 6, tubular sleeve ontology 50 has front end 53, the front end Portion 53 is with polygonal recess portion 54 to engage with the nipple with same shape part.The rear end 51 of sleeve body 50 It is provided with square end of the recess portion 52 of square cross section to receive power wrench.It is also set in the rear end of sleeve body 50 Set output shaft of the stop mechanism 55 ut socket unit to be locked to power wrench.The stop mechanism 55 includes removable Locking pin 56, the locking pin 56 are radially extended when being inserted into ut socket unit relative to sleeve body 50.Locking pin 56 Length and roughly same outer diameter the rear end 51 of sleeve body 50, and locking pin 56 extends under its insertion position The opposite aperture 57,58 of two of sleeve body 50.Locking pin 56 be intended to extend through the transverse holes in power wrench output shaft from And ut socket unit is locked to power wrench.Motor-driven casing 59 can be in the outside of sleeve body 50 in rear latched position It is axially displaced between the releasing position of front, motor-driven casing 59 covered under the rear latched position aperture 57,58 to Pin 56 is avoided to fall off.There are two the apertures 60,61 being reversed for the rear end setting of motor-driven casing 59, in attachment nut sleeve list Locking pin can be removed by the aperture 60,61 before member or when removing ut socket unit from power wrench output shaft 52.Aperture 57,58 is uncovered under the releasing position of casing 59 and can remove locking pin 56.It is then possible to from power Wrench output shaft removes ut socket unit.Motor-driven casing 59 is preferably made of plastic material.

For security reasons, motor-driven casing 59 is freely rotatable relative to sleeve body 50, and multiple springs 62 are arranged So that casing 59 is towards its rear latched position bias.Spring 62 is uniformly distributed along the periphery of sleeve and resists support ring 63, the support ring 63 is equally freely rotatable relative to sleeve body 50.Support ring 63 is by being mounted on sleeve body 50 Locking ring 65 in circumferential recess 66 is supported.Motor-driven casing 59 is provided with the hole 64 for accommodating simultaneously 62 rear portion of support spring, So that spring 62 steadily follows motor-driven casing 59 when motor-driven casing 59 is rotated relative to sleeve body 50.

Therefore, in order to protect operator when nipple tightens operation from for example as snarl gloves and caused by damage Wound, motor-driven casing 59 are rotated freely relative to sleeve body 50.However, being still had during nipple tightens operation Security risk relevant to the end 53 of the sleeve body 50 of rotation extended forward.In order to eliminate the risk, in end 53 The upper rotatable protection sleeve pipe 70 of setting.Protection sleeve pipe 70 is by inner circumferential ridge 71 relative to sleeve body 50 along axial direction Locking, the inner circumferential ridge 71 engage the annular recess 72 in sleeve body 50.

The protection sleeve pipe 70 carried on the front end 53 of sleeve body 50 is preferably by having the plastics of opposite low-friction coefficient Material (such as POM) is made to facilitate between casing 59,70 and sleeve body 50 readily to relatively move, and when installation Protection sleeve pipe 70, which is axially locked to sleeve body 50, when in sleeve body 50 makes internal ridge 71 via casing 70 Flexible deformation bites groove 72.

It should be understood that the present invention is not limited to the above embodiments, but can freely change within the scope of the claims.

Claims

1. a kind of ut socket unit for power wrench, the ut socket unit include tubular sleeve ontology (10；50), The sleeve body (10；50) front end (13；53) it is suitable for engaging with nut connector, the sleeve body (10；50) Rear end (11；51) for being connected to the output shaft of power wrench, which is characterized in that for the purpose of protection operator, in institute State sleeve body (10；50) the front end (13；53) protection sleeve pipe (30 that can be rotated freely is set on outside；70),

Wherein, stop mechanism (15 is set；55) to by the sleeve body (10；50) power wrench output shaft, institute are locked to State stop mechanism (15；55) it is included in the sleeve body (10；50) rear end (11；It 51) can be along axial position on outside The motor-driven casing (19 moved；59), the motor-driven casing (19；59) it is arranged so that the stop mechanism (15；55) in locking bit It sets and is moved between releasing position, for the purpose of protection operator, the motor-driven casing (19；59) relative to sleeve body (10；50) it can rotate freely.

2. the ut socket unit according to claim 1 for power wrench, wherein in the motor-driven casing (19； And the sleeve body (10 59)；50) multiple springs (22 are set between；62) to towards machine described in the latched position bias Dynamic casing (19；59).

3. the ut socket unit according to claim 1 or 2 for power wrench, wherein the protection sleeve pipe (30； 70) via internal ridge (31；71) relative to the front end (13 of the sleeve body；53) it axially locks, the inside Ridge (31；71) with the front end (13 of the sleeve body；53) circumferential recess (32 on；72) cooperate.

4. the ut socket unit according to claim 3 for power wrench, wherein the protection sleeve pipe (30；70) It is made of plastic material, and in installation to the front end of the sleeve body (13；53) when can flexible deformation to realizing The internal ridge (31；And the circumferential recess (32 71)；72) lock fit between.