TWM557177U - Extension bar - Google Patents

Abstract

The utility model comprises: a connecting shaft, comprising a connecting end for connecting to a driving tool; a sliding sleeve, sliding sleeve on the connecting shaft; a cylindrical member sleeved on the connecting shaft, comprising an inner hole, a socket communicating with the inner hole and a slanting hole communicating with the inner hole, the inclined hole being inwardly facing and facing the socket; a latching mechanism comprising an elastic member and a latching member, the resilient member abutting Between the sliding sleeve and the latching member, the elastic member pushes the latching member normally toward the oblique hole, the latching member includes a connecting portion connected by the sliding sleeve, and a receiving hole is received in the inclined hole And the portion of the inner bore of the inner hole can be partially protruded radially.

Description

Arbors

This creation is related to the post, especially with regard to a tool post.

Pressing, generally used for connecting a tool head (such as a screwdriver head), is composed of a rod body, a sleeve and a post, the post is assembled with the rod body, the post is available for one The driving device is assembled, the rod system is connected to a tool head, and the sleeve is slidably disposed on the rod body and slidable in a locking position and a releasing position, wherein the sleeve is offset by a clamping member a card recess that is snapped into the tool head, can be positioned and fixed to the tool head, and the sleeve is slid relative to the rod body to the release position, so that the card member can be retracted into one of the sleeves in the dodge space The locking of the pocket of the tool head is released, so that the tool head can be removed. This is the tool disclosed in TW I241231 and TW I365128.

However, in such a conventional joint, since the sleeve must have both the function of resisting the latching member and allowing the latching member to be evaded, the inner wall of the sleeve must be provided with a relative concave-convex structure, the structure thereof. It is complicated, and the processing in the sleeve is extremely difficult and inaccurate. The locking of the tool head is unstable and easy to be detached, and there is a drawback that needs to be improved.

Therefore, it is necessary to provide a novel and progressive post to solve the above problems.

The main purpose of this creation is to provide a post that can be snapped or released for quick replacement.

In order to achieve the above object, the present invention provides a post comprising: a shaft, comprising a joint for connecting to a driving tool; a sliding sleeve, sliding sleeve on the shaft; a sleeve, sleeved on the The coupling shaft includes an inner hole, a socket connecting the inner hole, and a slanting hole communicating with the inner hole, the inclined hole is inwardly facing and facing the socket; a latching mechanism comprising an elastic member and a latch a member, the elastic member abuts between the sliding sleeve and the latching member, the elastic member normally pushing the latching member toward the oblique hole, the latching member including a connecting portion connected by the sliding sleeve, And a latch portion disposed in the inclined hole and partially protruding radially into the inner hole.

The following is a description of possible implementations of the present invention by way of example only, and is not intended to limit the scope of the creation of the present invention.

Referring to FIGS. 1 through 6, there is shown a preferred embodiment of the present invention. The post 1 of the present invention includes a shaft 10, a sliding sleeve 20, a cylindrical member 30 and a latching mechanism 40.

The shaft 10 includes a terminal 11 for assembly to a drive tool. The sliding sleeve 20 is sleeved on the connecting shaft 10. The cylindrical member 30 is sleeved on the connecting shaft 10, and the cylindrical member 30 includes an inner hole 31, a socket 32 communicating with the inner hole 31, and a slanting hole 33 communicating with the inner hole 31. The inclined hole 33 is inward and It is cut toward the socket 32. The latching mechanism 40 includes an elastic member 41 and a latching member 42. The elastic member 41 abuts between the sliding sleeve 20 and the latching member 42. The elastic member 41 is normally pushed in the direction of the inclined hole 33. The latching member 42 includes a connecting portion 421 that is coupled by the sliding sleeve 20, and a latching portion 422 that is received in the inclined hole 33 and can partially protrude radially into the inner hole 31. . Thereby, the latching mechanism 40 can effectively lock or release a connector 100 (such as a tool head, an extension rod, or the like) to quickly replace the connector 100, and has a compact structure and convenient use. The slanting hole 33 can be opened to the outer peripheral surface of the tubular member 30 to form a V-port (which may not be opened, or may be formed as a slanted long groove on one side of the tubular section). It is combined with a power tool (such as the pneumatic tool of Fig. 7 and the power tool of Fig. 8), an extension rod, a sleeve or the like, and the joint can also be integrally connected with a handle (Fig. 9).

The sliding sleeve 20 further includes an inner flange 21, and the connecting shaft 10 further includes a radial card edge 12 between the connecting end 11 and the elastic member 41 and engageable with the inner flange 21. The radial card edge 12 is, for example, a C-clip, and may be integrally curved from the connecting shaft 10.

The inner surface of the sliding sleeve 20 further includes a sliding slot 22, and the connecting portion 421 is axially movably disposed on the sliding slot 22. An inner ring 23 is disposed in the sliding sleeve 20 between the connecting portion 421 and the tubular member 30. The connecting portion 421 can be engaged with the inner ring 23. In detail, the sliding sleeve 20 is provided with a large diameter hole from a port, and a shoulder portion 24 is formed at the bottom of the large diameter hole. The inner ring 23 is annularly fixed in the large diameter hole and spaced apart from the shoulder portion 24. The chute 22 is defined.

Preferably, the latching mechanism 40 further includes a first backing ring 43 disposed between the elastic member 41 and the inner flange 21, and a first portion disposed between the elastic member 41 and the inner ring 23. The two-rings 44, the elastic member 41 is, for example, a coil spring, and the first gasket 43 and the second gasket 44 are evenly pressed against the two ends of the coil spring to uniformly apply a force. The connecting portion 421 is C-shaped and sleeved on the connecting shaft 10 , and the connecting portion 421 is slidable between the second backing ring 44 and the inner ring 23 . The latching member 42 further includes a body portion 423 connected to the connecting portion 421 and the latching portion 422. The inner ring 23 includes a notch 231, and the notch 231 defines a passage with the sliding sleeve 20, the body Portion 423 extends through the passage. The tubular member 30 is further provided with a class slot 35 communicating between the inclined hole 33 and the passage to guide the movement of the latch member 42. The long slot 35 includes a deep slot 351 that communicates with the inclined hole 33 and a shallow slot 352 that communicates with the passage. The body 423 includes a first section 424, a second section 425, and a first section 424. The first segment 424 of the second segment 425 is received in the shallow groove 352. The second segment 425 is received in the deep groove 351 to limit the movement of the latching member 42 and lift the card. The effect of the part 422 is 。.

Preferably, the post 1 further includes a sleeve 50 disposed outside the sleeve member 30 and covering at least the inclined hole 33 and the latch portion 422 to limit and stabilize the latch portion 422. The post 1 further includes an elastic member 60 that is received in the tubular member 30 and abuts against the connecting shaft 10 and a pushing member 70 that abuts the elastic member 60. The inner surface of the tubular member 30 is further protruded. A radially inner flange 34, the pusher 70 protrudes from a radially outer flange 71 that is engageable with the radially inner flange 34 to limit the proper distance from the connector 100. Preferably, the post 1 further includes a magnetic member 80 disposed on the pusher 70 to magnetically attract the connector 100 to prevent falling off.

In actual operation, when the connector 100 is inserted by the socket 32, the latching portion 422 is firstly retracted, and the sliding slot 22 allows the connecting portion 421 to move back slightly without the need to simultaneously retract the sliding sleeve 20 (saving effort). When the latching hole 101 of the connector 100 is aligned with the inclined hole 33, the elastic member 41 pushes the connecting portion 421 forward to cause the latching portion 422 to normally snap against the latching recess 101, so that the connecting member 100 is automatically locked and does not come out at random (as shown in FIG. 5); when the connector 100 is to be removed, the sliding sleeve 20 is axially moved backward to drive the connecting portion 421 to disengage the latching portion 422 along the inclined hole 33. The card recess 101, the elastic member 60 pushes the pusher 70 forwardly, so that the connector 100 is automatically ejected (as shown in FIG. 6), so that the connector 100 can be replaced by one hand, which is convenient, time-saving and work efficiency. high.

1‧‧‧Pole
10‧‧‧Connected shaft
11‧‧‧Connected
12‧‧‧ Radial card edge
20‧‧‧Sleeve
21‧‧‧ inner flange
22‧‧‧Chute
23‧‧‧ Inner Ring
231‧‧‧ Missing slot
24‧‧‧ shoulder
30‧‧‧Clocks
31‧‧‧ Inside hole
32‧‧‧ socket
33‧‧‧ oblique hole
34‧‧‧radial inner flange
35‧‧‧ class long slot
351‧‧‧ deep trough
352‧‧‧ shallow groove
40‧‧‧Card institutions
41‧‧‧Flexible parts
42‧‧‧Car Parts
421‧‧‧Connecting Department
422‧‧‧Card Department
423‧‧‧ Body
424‧‧‧ first paragraph
425‧‧‧ second paragraph
426‧‧‧ turning section
43‧‧‧First cushion ring
44‧‧‧Second cushion
50‧‧‧ coat
60‧‧‧Flexible parts
70‧‧‧ push
80‧‧‧ Magnetic parts
71‧‧‧radial outer flange
100‧‧‧ 接接件
101‧‧‧ card concave

1 is a perspective view of a preferred embodiment of the present invention. 2 is an exploded view of a preferred embodiment of the present invention. Figure 3 is a cross-sectional view of a preferred embodiment of the present invention. 4 is an internal schematic view of a preferred embodiment of the present invention. 5 to 6 are schematic views of the operation of a preferred embodiment of the present invention. 7 to 9 are schematic views of three implementations of a preferred embodiment of the present invention.

Claims (10)

A post, comprising: a shaft, comprising a joint for connecting to a driving tool; a sliding sleeve, sliding sleeve on the connecting shaft; a cylindrical member, sleeved on the connecting shaft, comprising an inner hole, a socket that communicates with the inner hole and a slanting hole that communicates with the inner hole, the oblique hole is disposed inwardly and toward the socket; a latching mechanism includes an elastic member and a latching member, the elastic member abuts Between the sliding sleeve and the latching member, the elastic member pushes the latching member normally toward the oblique hole, the latching member includes a connecting portion connected by the sliding sleeve, and a receiving hole is received in the inclined hole And the portion of the inner bore of the inner hole can be partially protruded radially. The post according to claim 1, wherein the sliding sleeve further comprises an inner flange, the connecting shaft further comprising a radial direction between the connecting end and the elastic member and engaging with the inner flange Card edge. The post of claim 2, wherein the latching mechanism further comprises a first backing ring disposed between the resilient member and the inner flange. The post according to claim 1, wherein the inner surface of the sliding sleeve further comprises a sliding slot, and the connecting portion is axially movably disposed on the sliding slot. The post according to claim 1, wherein the sliding sleeve is additionally provided with an inner ring between the connecting portion and the cylindrical member, and the connecting portion can be engaged with the inner ring. The post according to claim 5, wherein the inner ring includes a slot, the slot defines a passage with the sliding sleeve, and the latching member further includes a body connected to the connecting portion and the latch portion The body extends through the passage. The post according to claim 6, wherein the tubular member is further provided with a class slot which is connected between the inclined hole and the passage, the step slot includes a deep groove communicating with the inclined hole and a communication The shallow groove of the channel, the body portion includes a first segment, a second segment and a turning segment connecting the first segment and the second segment, the first segment is accommodated in the shallow groove, and the second segment is accommodated In the deep groove. The post of claim 5, wherein the latching mechanism further comprises a second spacer disposed between the resilient member and the inner ring. The post according to any one of claims 1 to 8, further comprising a sleeve disposed outside the tubular member and covering at least the inclined hole and the buckle portion. The post according to any one of claims 1 to 8, further comprising an elastic member received in the tubular member and abutting the connecting shaft and a pushing member abutting the elastic member, the tubular member A radially inner flange is further protruded from the inner surface, and the pushing member protrudes from a radially outer flange which can be engaged with the radially inner flange.