TWI551407B - Bit holder with the function of quick release - Google Patents

Description

Push-on quick release screwdriver

The invention relates to a screwdriver head device; in particular to an innovative structural type revealer of a screwdriver head device which adopts a push-action type to achieve a quick release function.

According to the present invention, the invention mainly aims at exploring and improving the structure of a screwdriver head device (hereinafter referred to as a quick release type screwdriver device) having a quick release function.

The conventional quick-release screwdriver head device has a quick release function, which is usually a movable outer sleeve that is assembled by the outer periphery of the end of the screwdriver head, and is coupled with the movable outer sleeve and the screwdriver. The positioning of the beads between the rods is achieved; however, it is found that the conventional quick-release screwdriver head device still has some problems in practical application experience, for example: the movable type of the conventional quick-release screwdriver head device The outer sleeve is usually released when it is pushed backwards. However, this type of structure is found to be prone to malfunction during actual use, which is caused by the user operating the quick release screwdriver. It is often necessary to extend the driver's head into the narrow space. In this process, because the movable outer sleeve is located at the outermost periphery of the structure of the quick-release screwdriver, it is easy to collide with an object in the working space, thereby accidentally touching and moving. The outer sleeve retreats, causing mistakes and problems in the unintentional release of the screwdriver.

In addition, another problem with the conventional quick-release screwdriver head device is that the outer diameter of the movable outer sleeve is still too large and it is difficult to further reduce the size, and this problem usually originates from its movable type. The outer sleeve must provide a structural type of positioning the bead body and the actuating space, and the problem that the outer diameter of the movable outer sleeve is too large may cause disadvantages to narrow space work and collision, etc. in use. The problem is also a technical issue that needs to be considered again.

Therefore, in view of the problems existing in the above-mentioned conventional quick-release screwdriver device technology, how to develop an innovative structure that can be more ideal and practical, and the relevant industry should further consider the goal and direction of breakthrough.

In view of this, the inventor has been engaged in the manufacturing development and design experience of related products for many years. After detailed design and careful evaluation, the inventor has finally obtained the practical invention.

The main object of the present invention is to provide a forward-pushing quick-release screwdriver head device, and to solve the technical problem of how to develop a new type of quick-release screwdriver head device structure with more ideal practicability. breakthrough.

The technical feature of the present invention is mainly to solve the problem that the push-pull quick-drive screwdriver head device comprises: a shaft body having an elongated extension rod shape and an insertion groove and a group acceptance at the front and the rear ends. The insertion section has an insertion opening for inserting the sub-head into the insertion groove; at least one elongated guide groove is formed in a radial through-type manner at at least one side wall of the insertion groove, and the elongated guide a front end edge and a rear end edge of the trough; at least one positioning bead body is accommodated in the elongated guiding groove to be in a movable state, and the inner side of the positioning bead can protrude into the insertion bit insertion slot; The elastic returning member is disposed between the positioning bead body and the rear end edge of the elongated guiding groove, and elastically pushes the positioning bead body toward the front end edge of the long guiding groove in a normal state; a front push release type sleeve The tubular-shaped sleeve is longitudinally displaceable on the outer circumference of one end of the insertion slot, and the forward displacement state of the forward-release sleeve is preset as a release mode, and the backward displacement state is preset as a compression mode; Two elastic returning members are arranged between the front push release sleeve and the shaft, and are pushed forward by a normal elastic The sleeve is displaced backwards and is in the pressing mode; a cone-shaped orthopedic annular surface is disposed on the inner wall of the front push release sleeve and corresponding to the outer side of the positioning bead body, and the tapered oblique control ring surface includes When the front and rear release sleeves are in the pressing mode, the tapered end portions press the positioning beads inwardly to force the positioning of the screwdriver head, and the current push release type When the sleeve is in the release mode, the positioning bead system is in a state of releasing the screwdriver head corresponding to the tapered end; an elastic pushing seat is disposed in the insertion slot provided in the shaft, and can be released when the screwdriver is released The elastic ejector is elastically ejected; and the inner side of the positioning bead is pressed against the facing portion of the bit; and when the tapered end of the tapered orthopedic ring is positioned, the positioning of the bead is inwardly resisted to the most In the tight state, a gap must be maintained between the positioning bead and the front end edge of the elongated guiding groove; and the outer diameter of the elastic pushing seat is larger than the outer diameter formed by the facing portion of the bit.

The main effect and advantage of the present invention is that it can provide a push-pull quick-release screwdriver head device, which can achieve many advantages and practical applications such as preventing malfunction and reducing the outer diameter size, reducing the probability of collision, and facilitating narrow space work. Progressive.

Referring to Figures 1 through 5, there is shown a preferred embodiment of the present invention, which is for illustrative purposes only, and is not limited by this structure in the patent application; The front push-type quick-release screwdriver device A includes a shaft 10 having an elongated extension body shape, and the front and rear ends of the shaft 10 are provided with an insertion groove 11 and a set of receiving regions. Section 12, wherein the insertion slot 11 has an insertion opening 13 for inserting the sub-head 20 into the insertion slot 11; at least one elongated guide groove 30 is formed in the radial through-type of the shaft 10 At least one side wall of the slot 11 is inserted, and the long guide slot 30 has a front end edge 31 and a rear end edge 32. At least one positioning bead body 40 is received in the elongated guide slot 30. The inner side of the positioning bead body 40 can protrude into the insertion groove 11; a first elastic returning member 50 (which can be a coil spring) is disposed on the positioning bead body 40 and the elongated guiding groove 30. Between the rear end edges 32, the positioning bead body 40 is elastically pushed in the direction of the front end edge 31 of the elongated guiding groove 30 in a normal state; a front push release sleeve 60 is in a cylindrical shape set. The shaft 10 is provided with one end of the insertion groove 11 and has a front-rear displacement type, and the forward displacement state of the forward-release sleeve 60 is preset to a release mode (as shown in FIGS. 6 and 7). The rearward displacement state is preset to a pressing mode (as shown in FIGS. 3 and 4); a second elastic returning member 70 (which may be a coil spring) is disposed in the front push release sleeve 60 and Between the shafts 10, the forward-release sleeve 60 is displaced in a pressing mode by a normal elastic bias; a cone-shaped orthographic annulus 80 is disposed on the inner wall of the front push-release sleeve 60. And corresponding to the outer side of the positioning bead body 40, the conical oblique control ring surface 80 includes a tapered end 81 and a tapered end 82 disposed in front and rear, and the forward push release sleeve 60 is in the tight mode The tapered end 81 is configured to urge the positioning bead 40 inwardly to force the positioning of the bit 20, and when the current release sleeve 60 is in the release mode, the positioning bead 40 corresponds to the tapered end 82. In a state in which the driver's head 20 is released; an elastic urging seat 90 is disposed in the insertion slot 11 of the shaft 10 and is pushed forward by an elastic body 91. When the 20 is in the released state (as shown in FIG. 5), the elastic urging seat 90 can be elastically ejected; and, as shown in FIG. 5, the inner side of the positioning bead body 40 is pressed against the screwdriver head. The facing portion 21 of the 20 (not the corner portion); wherein, when the tapered end 81 of the tapered beveled annular surface 80 urges the positioning bead 40 inwardly to the tightest state, the positioning bead 40 There must be a gap W between the front end edge 31 of the elongated guide groove 30 (only shown in Fig. 4); and as shown in Fig. 8, the outer diameter of the elastic pusher 90 (as indicated by H1) The outer diameter (as indicated by H2) formed by the facing portion 21 of the bit head 20.

Wherein, the purpose of the gap W is based on the fact that there are some tolerances in the manufacture of the components of the front push-off quick-release screwdriver device A, so it is difficult to ensure that the positioning bead 40 is displaced to the long guide. When the front end edge 31 of the moving groove 30 is engaged with the tapered end 81 to urge the positioning bead 40 to the tightest state; accordingly, in order to prevent the positioning bead 40 from abutting against the elongated guiding groove 30 At the time of the front end edge 31, the problem that the tapered end 81 is not tightened occurs, so the aforementioned gap W must be left in order to cope with it.

As shown in FIG. 5, the front end of the shaft 10 can be provided with a convex ring 14, and the front wall of the front push release sleeve 60 is provided with a limiting shoulder 61 for the second elastic returning member. The 70 series is disposed between the convex ring 14 and the limiting shoulder 61.

As shown in FIG. 5, the inner side ends of the elongated guide groove 30 are further provided with a reduced diameter retaining edge 33 to form a limit action on the inner side movement of the positioning bead body 40.

As shown in the first and second figures, the group receiving section 12 provided at the rear end of the shaft 10 can be a hexagonal rod type.

With the above-described structural composition technical features, the actual use case of the push-pull screwdriver head device A of the present invention is first shown in Figs. 3 and 4, when we insert the driver bit 20 from the insertion port 13 into the shaft 10 In the insertion groove 11 (as indicated by the arrow L1), at this time, since the front push release sleeve 60 is pressed by the second elastic return member 70 in the pressing mode, the front push release sleeve 60 is inserted. The conical end 81 of the tapered beveled annulus 80 of the wall will urge the positioning bead 40 inwardly, thereby forming the positioning bead 40 to inwardly press the screwdriver head 20 (such as the arrow L2 in Fig. 4) The positioning state shown); then, as shown in Fig. 6, when we want to release the screwdriver head 20, the front push release sleeve 60 is pushed forward (as indicated by the arrow L3), which is originally cone The positioning bead 40 urged by the tapered end 81 of the inclined positional annulus 80 is converted into a state corresponding to the tapered end 82 (as indicated by an arrow L4), so the positioning bead 40 and the bit 20 are positioned. A relaxed state is reached between them to achieve the purpose of releasing the screwdriver head 20.

In addition, as shown in FIG. 9, the elongated guide groove 30 and the positioning bead body 40 can also be arranged in three equal intervals, which is also a specific embodiment.

As shown in FIG. 10, the elastic ejector 90 is further provided with an axially elongated groove 92 having a first end 921 and a second end. The end portion 922; the side of the insertion groove 11 of the shaft 10 is provided with a convex member 15 (which may be a steel ball), and the convex member 15 is inwardly protruded in the axially elongated groove 92; Thereby, the elastic urging seat 90 can obtain the directional non-rotation state by the cooperation of the axially elongated groove 92 and the protruding member 15, and the axial sliding of the elastic urging seat 90 can be The protruding member 15 is restrained by the difference between the first end 921 or the second end 922 of the axially elongated groove 92. The outer wall of the elastic ejector 90 is designed by the embodiment. Set it to a straight and straight state.

Advantages of the Invention: The "push-and-push-off screwdriver head device" disclosed in the present invention mainly uses the innovative unique structural patterns and technical features to make the present invention in comparison with the conventional structure proposed in [Prior Art] Since the front push release sleeve disclosed in the present invention is set to the release mode in the forward displacement state, during the use, when the forward push release sleeve collides forward to the surrounding object, no displacement occurs. The action causes the problem of the wrong release of the screwdriver head; on the other hand, the elongated guide groove is disposed on the shaft for positioning the bead body, and the positioning bead system resists the technical features of the position of the screwdriver head, etc. Therefore, the outer diameter of the front push release sleeve can be reduced (note: because the sleeve can omit the required thickness for positioning the bead body, and if the bead body is pressed against the corner of the screwdriver head, then The required installation space is large, thereby reducing the cross-sectional area of the quick-release screwdriver head device and relatively reducing the probability of collision during use; as described above, the "pre-push-off quick-release screwdriver head device" of the present invention is disclosed. Application It can reach to prevent malfunction and reduce the diameter size, reduce the chances of a collision happens and narrow space more conducive to work and many other advantages and practical advance.

In addition, the outer diameter of the elastic urging seat 90 (as indicated by H1) is greater than the technical feature of the outer diameter formed by the facing portion 21 of the screwdriver head 20 (as indicated by H2), and the action is mainly when Before placing the screwdriver head 20, the inner side of the positioning bead body 40 first abuts against the periphery of the elastic pushing base 90 (see Fig. 8), and when the screwdriver head 20 is assembled into the insertion slot 11, the elastic top is placed. When the pusher 90 is pushed inwardly, since the outer diameter of the starter head 20 facing the portion 21 is smaller than the outer diameter of the elastic pusher 90, when the splitter head 20 is moved to correspond to the positioning bead 40, the positioning of the bead 40 may be due to the foregoing. The outer diameter drop is automatically retracted. At this time, the front push release sleeve 60 is displaced relative to the rear side, so that the tapered end 81 of the tapered oblique seat ring surface 80 is displaced rearward to the position of the resisting positioning bead 40. (Please refer to FIG. 3), automatically shifting the front push release sleeve 60 to the pressing mode, thereby achieving one-handed positioning of the screwdriver head 20 into the insertion slot 11 to achieve positioning, without having to dial the same The push-release sleeve 60 is used to make it more convenient and easy to use.

The above embodiments are intended to be illustrative of the present invention, and are not to be construed as limiting the scope of the invention. The principle is changed and modified to achieve the equivalent purpose, and such changes and modifications shall be included in the scope defined by the scope of application of the patent as described later.

A‧‧‧Pre-push quick-release screwdriver head device 10‧‧‧ shaft 11‧‧‧ Insert slot 12‧‧‧Acceptance section 13‧‧‧Inlet 14‧‧‧Convex ring 15.‧‧ Bulge member 20‧‧‧Starter head 21‧‧‧ Facing part 30‧‧‧Long guide groove 31‧‧‧Front edge 32‧‧‧ Rear edge 33‧‧‧Reducing flange 40‧‧‧ Positioning Beads 50‧‧‧First elastic return piece 60‧‧‧Pre-release release sleeve 61‧‧‧Restricted shoulder 70‧‧‧Second elastic return piece 80‧‧‧Cone oblique control ring surface 81 ‧‧‧Cone end 82‧‧‧ Cone flare 90‧‧‧Elastic push-up seat 91‧‧‧ Elastomers 92‧‧‧Axial elongate groove 921‧‧‧First end 922‧‧‧ Second end W‧‧‧ gap

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exploded perspective view of a preferred embodiment of the structure of the present invention. Fig. 2 is a combined perspective view of a preferred embodiment of the structure of the present invention (note: only the driver head is decomposed). Figure 3 is an axial cross-sectional view of a preferred embodiment of the structure of the present invention. Fig. 4 is an enlarged view of B1 of Fig. 3. Figure 5 is a radial cross-sectional view of a preferred embodiment of the structure of the present invention. Fig. 6 is a schematic view showing the release state of the release sleeve before the present invention. Fig. 7 is an enlarged view of B2 of Fig. 6. Figure 8 is a cross-sectional enlarged view of a partial structure of the present invention. Fig. 9 is a view showing another embodiment of the elongated guide groove and positioning bead arrangement type of the present invention. Fig. 10 is a view showing an embodiment in which the elastic ejector of the present invention is provided with an axially elongated groove, and the shaft is inserted and provided with a convex member.

A‧‧‧Pre-push quick release screwdriver

10‧‧‧ shaft

11‧‧‧ Insert slot

12‧‧‧Acceptance section

13‧‧‧Inlet

14‧‧ ‧ convex ring

20‧‧‧ screwdriver head

30‧‧‧Long guide groove

31‧‧‧ front edge

32‧‧‧The back edge

40‧‧‧ positioning beads

50‧‧‧First elastic reset

60‧‧‧Pre-release release sleeve

61‧‧‧Limited shoulder

70‧‧‧Second elastic reset

80‧‧‧Cone oblique orthopedic torus

90‧‧‧Flexible pusher

91‧‧‧ Elastomers

Claims (5)

The utility model relates to a push-on quick-release screwdriver head device, comprising: a shaft body having an elongated extension rod body shape, wherein the front and rear ends of the shaft body are respectively provided with an insertion groove and a set of receiving sections, wherein the insertion body The slot has an insertion opening for inserting the sub-head into the insertion slot; the at least one elongated guide slot is formed in a radial through-type manner on at least one side wall of the insertion slot of the shaft, and the elongated shape The guiding groove has a front end edge and a rear end edge; at least one positioning bead body is accommodated in the elongated guiding groove to be in a limitable movable state, and the inner side of the positioning bead body can protrude into the bit insertion head a first elastic returning member is disposed between the positioning bead body and the rear end edge of the elongated guiding groove, and elastically pushes the positioning bead body toward the front end edge of the elongated guiding groove in a normal state; The front push release sleeve has a cylindrical shape set on the shaft body, and one end of the insertion groove has a forward and backward displacement type, and the forward displacement state of the front push release sleeve is preset to a release mode, a backward displacement state is preset to a pressing mode; a second elastic reset member is set in a front push release mode Between the sleeve and the shaft body, the normal push-type elastic push-pull pushes the forward push-release sleeve to be rearwardly displaced and is in a pressing mode; a cone-shaped oblique control loop surface is disposed on the inner wall of the front push-release sleeve and is Positioning the outer side of the bead body correspondingly, the conical oblique control ring surface includes a tapered end and a tapered end end arranged in front and rear, and when the forward push release sleeve is in the pressing mode, the tapered end is Positioning the bead body inwardly to force the positioning of the screwdriver head, and when the current release sleeve is in the release mode, the positioning bead system corresponds to the conical expansion end to release the screwdriver head; an elastic ejector seat, The set is disposed in the insertion slot of the shaft and is pushed forward by an elastic body. When the screwdriver head is released, the elastic pusher can be elastically ejected; and wherein the positioning of the bead body The side system is pressed against the facing portion of the screwdriver head; wherein, when the tapered end of the tapered orthopedic annular surface biases the positioning bead body to the tightest state, the positioning bead body and the elongated shape guide A gap must be maintained between the front end edges of the groove; wherein, the outer diameter of the elastic thrust seat is greater than The outer diameter of the portion facing the head is formed. According to the first aspect of the patent application, the front end of the shaft is provided with a convex ring, and the front end of the front wall of the front push release sleeve is provided with a limiting shoulder, so that The second elastic returning member is disposed between the convex ring and the limiting shoulder. According to the second aspect of the patent application, the quick-release screwdriver device is provided, wherein the inner end of the elongated guide groove is further provided with a reduced diameter retaining edge to limit the inner movement of the positioning bead. Bit role. According to the third aspect of the patent application, the quick release screwdriver device is provided, wherein the group receiving section at the rear end of the shaft is a hexagonal rod type. According to the fourth aspect of the patent application, the quick-release screwdriver head device is further provided with an axially elongated groove on one side of the elastic thrusting seat, the axially elongated groove having a first end And a second end; the side of the insertion groove of the shaft is provided with a convex member, and the protruding member protrudes inwardly in the axially elongated groove.