TWI650213B - Double positioning bead tool head post - Google Patents

Abstract

A tool holder for a double positioning bead comprises: a base, a sleeve and an elastic member, the sleeve having a cylinder at one end for inserting a tool head, the first side of the cylinder body having a first perforation and a a second perforation, the first and second perforations respectively accommodating a first positioning bead and a second positioning bead; the sleeve is slidably sleeved on the cylindrical body, and the inner wall of the sleeve has a beveled section from the back to the front, and the inclined section The elastic member is sleeved in the cylinder body to provide the elastic force of the sleeve to be displaced backwards; the elastic force of the elastic member causes the inclined surface section to push the first and second positioning beads, and the component force is The first and second positioning beads move toward the cylinder body, so that the tool head can be rotated without rotating, thereby improving the accuracy of the work.

Description

Double positioning bead tool head post

The invention relates to hand tools, and in particular to a tool head post of a double positioning bead.

Taiwan Patent No. I551407 discloses a push-on quick-release screwdriver head device, comprising: a shaft 10 having a front end insertion groove 11 for inserting a screwdriver head; and an elongated guide groove 30 disposed in front of the insertion groove 11. a rear end edge; the positioning bead body 40 is received in the elongated guiding groove 30 to be limited in position, and the inner side of the positioning bead body 40 can protrude into the insertion groove 11; the first elastic returning member 50; The release sleeve 60 has a front-rear displacement on the outer circumference of one end of the insertion groove 11, and the forward displacement state is set to the release mode, and the backward displacement state is set to the pressing mode.

The foregoing prior art mainly provides a fixing effect when the insert head is inserted by the positioning of the bead body against the facing portion of the bit head; however, the structure is fixed only to the bit head by a positioning bead, because the screwdriver head is connected to the power tool. When used, the gap formed between the screwdriver head and the insertion groove causes the screwdriver head to swing to a certain extent during rotation, which causes the screwdriver head to be unable to work accurately, and the length of the screwdriver head is longer. Especially obvious.

The main object of the present invention is to provide a tool holder for a double positioning bead which does not cause a swing when the tool head is rotated, thereby improving the accuracy of the work.

In order to achieve the above object, the present invention provides a dual positioning bead tool head post comprising: a base having a barrel at one end, a cavity formed in the barrel, and formed at a front end of the chamber One opening communicating with the chamber for inserting a tool head into the chamber through the opening, the side wall of the barrel having a first through hole, a second through hole and a ring groove The first through hole and the second through hole respectively receive a first positioning bead and a second positioning bead, and the second through hole and the second through hole respectively receive a first positioning bead and a second positioning bead. a buckle sleeve slidably sleeved on the cylinder body, the inner side wall of the rear end of the sleeve has a convex ring, and the inner side wall of the sleeve has a dead point, and the buckle ring is abutted against the stopping point. Preventing the sleeve from coming off the barrel, and the sleeve has a beveled section from the back to the front, the beveled section is tapered from the back to the front; and an elastic member is fitted to the cylinder and abuts against the convex body a ring and the buckle for providing an elastic force for the sleeve to be displaced rearward; wherein the sleeve is provided by the elastic member The elastic force of the rear displacement causes the inclined surface section to push the first positioning bead and the second positioning bead, and the component force moves the first positioning bead and the second positioning bead to the chamber, and the tool is inserted Under the condition of the head, the tool head can be pressed and clamped to achieve the effect of tightening and fixing.

Therefore, the present invention provides a tool holder for the double positioning bead, so that the tool head does not swing when rotated, thereby improving the accuracy of the work.

10‧‧‧ Double positioning bead tool head post

11‧‧‧Base

13‧‧‧Cylinder

131‧‧ ‧ room

133‧‧‧ openings

15‧‧‧First perforation

151‧‧‧First positioning bead

17‧‧‧Second perforation

171‧‧‧Second positioning bead

19‧‧‧ Ring groove

191‧‧‧ buckle

21‧‧‧Sleeve

23‧‧‧ convex ring

25‧‧‧

26‧‧‧First straight paragraph

27‧‧‧Slope section

28‧‧‧Second straight paragraph

31‧‧‧Flexible parts

100‧‧‧Tool head

H1‧‧‧First Margin Space

H2‧‧‧Second margin space

10'‧‧‧ Double positioning bead tool head post

13’‧‧‧Cylinder

131’‧‧ ‧ room

132'‧‧‧ magnetic parts

10"‧‧‧ Double positioning bead tool head post

13"‧‧‧Cylinder

131”‧‧‧ Rooms

134" ‧ ‧ retaining wall

135”‧‧‧ activity block

136”‧‧‧垣

137"‧‧‧ Spring

151”‧‧‧First positioning bead

171”‧‧‧Second positioning bead

21”‧‧‧Sleeve

27”‧‧‧Slope section

H1”‧‧‧The first margin

H2”‧‧‧Second margin space

100”‧‧‧Tool head

Fig. 1 is a perspective view showing a first embodiment of the present invention.

Fig. 2 is an exploded view of the first embodiment of the present invention.

Figure 3 is a cross-sectional view taken along line 1-3 of Figure 1.

Fig. 4 is a longitudinal schematic view showing the first embodiment of the present invention, showing the case where the first and second positioning beads are located on the same side of the side wall of the cylinder.

Figure 5 is a longitudinal schematic view of the first embodiment of the present invention, showing the first and second positioning beads being located at the junction of the inner walls of the two cylinders.

Fig. 6 is a view showing the state of use of the first embodiment of the present invention, showing the state of the insertion tool head.

Fig. 7 is a view showing the state of use of the first embodiment of the present invention, showing the state in which the tool head is taken out.

Figure 8 is a side cross-sectional view showing a second embodiment of the present invention.

Figure 9 is a side cross-sectional view showing a third embodiment of the present invention.

Fig. 10 is a view showing the state of use of the third embodiment of the present invention, showing the state of the insertion tool head.

Fig. 11 is a view showing the state of use of the third embodiment of the present invention, showing the state in which the tool head is taken out.

In order to explain in detail the technical features of the present invention, the following first embodiment will be described with reference to the following drawings, in which:

As shown in FIG. 1-7, a tool post 10 of a double positioning bead according to an embodiment of the present invention is mainly composed of a base 11, a sleeve 21 and an elastic member 31, wherein:

The base 11 has a cylinder 13 at one end thereof. A cavity 131 is formed in the cylinder 13 and an opening 133 is formed in the front end of the chamber 131 to communicate with the chamber 131 for providing a tool head 100. The first side of the tubular body 13 has a first through hole 15 , a second through hole 17 and a ring groove 19 . The first through hole 15 is located behind the second through hole 17 , and the first hole 15 is inserted into the chamber 131 . The first through hole 15 and the second through hole 17 respectively receive a first positioning bead 151 and a second positioning bead 171, and the second through hole 15 and the second through hole 17 respectively receive a first positioning bead 151 and a second positioning bead 171. A buckle 191 is provided.

In this embodiment, the cylindrical body 13 is integrally formed on the base 11; the side wall of the cylindrical body 13 is connected by six faces, but not limited thereto, the first and second positioning beads 151, The 171 is in the same plane (as shown in FIG. 4); the number of the first through hole 15, the second through hole 17, the first positioning bead 151 and the second positioning bead 171 are plural, and The cross section of the cylinder 13 is equiangularly distributed, and one of the first positioning beads 151 and one of the second positioning beads 171 are located on the same side of the side wall of the cylinder.

In the actual implementation, the cylindrical body 13 can also be formed on the base 11 in a combined manner, so that the cylindrical body 13 is formed on the base 11 and is not limited to the embodiment; A positioning bead 151 and the plurality of second positioning bead 171 may be located at the junction of the inner side walls of the cylinder 13 (as shown in FIG. 5); or the first and second perforations 15, 17 and the first The number of the two positioning beads 151, 171 may also be one. Therefore, the number of the first and second through holes 15, 17 and the first and second positioning beads 151, 171 and the actual implementation type should not only be in this embodiment. Limited.

The sleeve 21 is slidably disposed on the cylindrical body 13. The inner side wall of the rear end of the sleeve 21 has a convex ring 23, and the inner side wall of the sleeve 21 has a stop point 25, and the buckle 191 is abutted against the end. At point 25, the sleeve 21 is prevented from disengaging from the barrel 13, and the sleeve 21 has a beveled section 27 from the front to the front, and the beveled section 27 is tapered from the rear to the front. In the present embodiment, the sleeve has a first straight section 26 and a second straight section 28, but not limited thereto, and the stop point 25 is located in the slope section 27. In the actual implementation, the dead point 25 can also be located in the first straight section 26 or the second straight section 28, so the dead point 25 is not limited to the embodiment.

The elastic member 31 is sleeved on the cylindrical body 13 and abuts against the convex ring 23 and the buckle 191 to provide an elastic force for the sleeve 21 to be displaced rearward.

Wherein, the sleeve 21 is biased by the elastic force of the elastic member 31 to cause the inclined surface section 27 to push the plurality of first positioning beads 151 and the plurality of second positioning beads 171, and the component force makes the plural number first The position bead 151 and the plural second positioning bead 171 are moved to the chamber 131, and the tool head 100 can be pressed and held in a state in which the tool bit 100 is inserted, thereby achieving an effect of tightening and fixing.

The architecture of the first embodiment has been described above, and the operational state of the first embodiment will be described next.

As shown in Fig. 3, the internal state of the present invention is shown when the tool head 100 is not inserted. At this time, the elastic force of the sleeve 21 being displaced rearward by the elastic member 31 causes the inclined surface section 27 to be pushed up. The plurality of first positioning beads 151 and the plurality of second positioning beads 171 have a component force for moving the plurality of first positioning beads 151 and the plurality of second positioning beads 171 to the chamber 131.

As shown in FIG. 6 , when the tool head 100 is inserted, the tool head 100 is inserted into the chamber 131 through the opening 133 , and the plurality of first positioning beads 151 and the plurality of second positioning beads 171 can The tool head 100 is pressed against and clamped to achieve a tightly fixed effect.

As shown in FIG. 7, when the tool head 100 is to be withdrawn, the user operates the sleeve 21 to move forward, thereby forming a first between the sloped section 27 and each of the first positioning beads 151. a second margin space H2 is formed between the margin space H1 and each of the second positioning beads 171, and each of the first margin spaces H1 can accommodate each of the first positioning beads 151, and each of the second margins The space H2 can accommodate each of the second positioning beads 171, thereby releasing the clamping effect of the plurality of first positioning beads 151 and the plurality of second positioning beads 171 on the tool head 100, and the tool head 100 can be taken out.

Therefore, the present invention provides a tool holder for a double positioning bead, wherein the plurality of first positioning beads and the plurality of second positioning beads can press and hold the structure of the tool head, so that the tool head is rotated. At the time, there is no swing, which improves the accuracy of the workmanship.

Next, referring to FIG. 8, the tool head post 10' of the double positioning bead according to the second embodiment of the present invention is mainly similar to the first embodiment disclosed above, except that: The cylinder 13' further has a magnetic member 132' located on the inner bottom surface of the cylindrical body 13' to attract the tool head 100' by its magnetic attraction. Thereby, when the tool head is inserted into the chamber 131', the tool head 100' can be sucked by the magnetic member 132', which has a fixing effect.

The functions of the remaining structures of the second embodiment are the same as those of the first embodiment, and will not be described again.

Referring to FIG. 9-11, a tool post 10" of a double positioning bead according to a third embodiment of the present invention is mainly similar to the first embodiment disclosed above, except that: 9 shows that the cylinder 13" further has a retaining wall 134", a movable block 135" and a spring 137", the retaining wall 134" is disposed on the inner side wall of the cylinder 13" and is located in the chamber 131" The movable block 135" is located in the chamber 131" and can be displaced forward and backward. The movable block 135" has a tenon 136", and the tenon 136" is located inside the retaining wall 134". The inner bottom surface of the cylinder 13" and the movable block 135", the elastic force of the movable block 135" is moved back and forth, so that when the movable block 135" moves forward and the convex 136" abuts against the retaining wall 134 In the third embodiment, when the tool head 100 is not inserted, the movable block 135" pushes the movable block 135" forward by the elastic force of the spring 137" before and after the movement.垣 136" is against the retaining wall 134".

As shown in FIG. 10, when the tool head 100" is inserted, the tool head 100" abuts against the movable block 135" via the opening 133 and overcomes the elastic force of the spring 137", thereby forcing the movable block 135" Moving backwards, the clamping force generated by the plurality of first positioning beads 151" and the plurality of second positioning beads 171" on the tool head 100" achieves an urgently fixed effect.

As shown in FIG. 11, when the tool head 100" is to be withdrawn, the user operates the sleeve 21" to move forward, since the slope portion 27" and each of the first positioning beads 151" are respectively formed. The first margin space H1" and the second positioning bead 171" respectively have the second margin space H2", The first and second margin spaces H1", H2" can respectively accommodate the first positioning bead 151" and each of the second positioning bead 171", thereby releasing the plurality of first positioning bead 151" and the second The positioning effect of the positioning bead 171" on the tool head 100", at this time, the elastic force of the spring 137" pushes the movable block 135" forward, thereby pushing the tool head 100 "outside the chamber 131" Pushing, the user can conveniently take out the tool head 100".

The functions of the remaining structures of the third embodiment are the same as those of the first embodiment, and will not be described again.

Claims (8)

A tool holder for a double positioning bead comprises: a base having a cylinder at one end, a cavity formed in the cylinder body, and an opening communicating with the chamber at the front end of the chamber, The tool body has a first through hole, a second hole and a ring groove, the first hole is located behind the second hole, and the first hole is The second through hole is connected to the chamber, and the first through hole and the second through hole respectively receive a first positioning bead and a second positioning bead, the ring groove is fastened with a buckle; a sleeve is slidable The sleeve is disposed on the inner tube of the sleeve, and the inner side wall of the rear end of the sleeve has a convex ring, and the inner side wall of the sleeve has a dead point, and the buckle is abutted against the stopping point to prevent the sleeve from coming off the barrel, and The inner wall of the sleeve has a beveled section from the back to the front, the beveled section is tapered from the rear to the front; and an elastic member is fitted to the cylinder and abuts against the convex ring and the buckle for providing The elastic force of the sleeve being displaced backward; wherein the sleeve is elastically biased by the elastic member to be displaced rearward Disposing the first positioning bead and the second positioning bead, the component force moving the first positioning bead and the second positioning bead to the chamber, and pressing and clamping under the condition that the tool head is inserted The tool head achieves a tightly fixed effect. According to the tool post of the double positioning bead of claim 1, wherein the cylinder system is integrally formed on the base. The tool post of the double positioning bead according to item 1 of the patent application scope, wherein: the dead point is located in the bevel section. According to the tool post of the double positioning bead according to claim 1, wherein: the inner wall of the cylinder is connected by six faces, and the first positioning bead and the second positioning bead are on the same side. . According to the tool post of the double positioning bead according to claim 1, wherein: the inner wall of the cylinder is connected by six faces, and the first positioning bead and the second positioning bead are located in the cylinder. The junction of the two inner side walls. The tool post of the double positioning bead according to the first aspect of the patent application, wherein the number of the first perforation, the second perforation, the first positioning bead and the second positioning bead are plural, and The cross section of the cylinder is equiangular. According to the tool post of the double positioning bead according to claim 1, wherein the cylinder further has a magnetic member, the magnetic member is located on the bottom surface of the cylinder, and attracts the tool head by magnetic attraction. According to the tool post of the double positioning bead according to claim 1, wherein the cylinder further has a retaining wall, a movable block and a spring, and the retaining wall is disposed on the side wall of the cylinder and located in the chamber. The movable block is located in the chamber and can be displaced forward and backward. The movable block has a tenon, and the tenon is located inside the retaining wall. The spring is abutted against the bottom surface of the cylinder and the movable block, and the movable block is provided. The elastic force of the movement causes the movable block to move forward and be pressed against the retaining wall by the tenon.