WO2018090632A1

WO2018090632A1 - Quick change screwdriver with tail ratchet

Info

Publication number: WO2018090632A1
Application number: PCT/CN2017/090509
Authority: WO
Inventors: 孙时雨
Original assignee: 上海齐绘机电科技有限公司
Priority date: 2016-11-16
Filing date: 2017-06-28
Publication date: 2018-05-24
Also published as: CN206287072U

Abstract

Provided is a quick change screwdriver with a tail ratchet, the screwdriver comprising a bit bushing (2) internally provided with a plurality of bits (1), a handle (3), and a push rod (4) and a ratchet (5) provided in the handle, wherein the bit bushing (2) is internally provided with positioning grooves at multiple positions, and the bits (1) are correspondingly provided in the positioning grooves; the handle (3) is fitted over an end of the bit bushing (2), and the handle (3) is movably locked along the end of the bit bushing (2); the ratchet (5) is a three-position ratchet, and is provided at an inner tail end of the handle (3), and the ratchet (5) is used for locking the handle (3) or forming, between the ratchet and the handle (3), a unidirectional motion to the left or to the right; and an end of the push rod (4) is fixed on the ratchet (5), and the push rod (4) moves forward with the movement of the handle (3) and selects a bit, and pushes the selected bit (1) out or pulls the selected bit (1) backwards to withdraw same. The screwdriver can replace the screwdriver bit (1) by means of pushing and pulling the handle (3) and rotating the handle (3), and by means of the tail three-position ratchet (5), a quick change structure and a ratchet structure are combined. The product has a simple structure, and can be applied to various scenarios.

Description

Quick change screwdriver with tail ratchet

Technical field

The utility model belongs to the technical field of screwdrivers, in particular to a quick change screwdriver with a tail ratchet.

Background technique

A screwdriver is a tool used to twist a screw to force it in place. It is easy to carry and easy to operate, and has a wide range of applications in our daily lives.

Our common screwdrivers generally only have a single function. In some cases, because of the different types of screws, single-function screwdrivers can not meet such requirements, thus limiting the application of screwdrivers; there are also some combination on the market. Screwdriver, generally fix the screwdriver to the special mounting bracket, and the mounting bracket and the handle are all integrated. In use, it is easy to lose the screwdriver. At the same time, when replacing the screwdriver, it needs to be disassembled frequently, which is very troublesome. .

Therefore, it is a focus of the designer to design a screwdriver that can increase the size of the screwdriver and quickly replace it.

Utility model content

The purpose of the utility model is to overcome the deficiencies or defects of the prior art, and to provide a quick-change screwdriver with a tail ratchet, which can achieve the purpose of replacing the screwdriver bit by pushing and pulling the handle and rotating the handle.

In order to achieve the above object, the utility model adopts the following technical solutions:

a quick-change screwdriver with a tail ratchet, comprising a batch head sleeve with a plurality of batch heads therein, a handle, a push rod and a ratchet wheel disposed in the handle, and a plurality of positioning slots in the batch head sleeve The batch head is correspondingly disposed in the positioning slot; the glove is disposed at an end of the batch head sleeve, and the handle is movably locked along an end of the batch head sleeve; the ratchet is a three-position ratchet, Provided at an inner tail end of the handle, the ratchet is used to lock the handle or form a leftward or rightward one-way movement between the handle; the end of the push rod is fixed on the ratchet The pusher moves forward as the handle moves and selects, pushes the selected bit or pulls back to retrieve the selected bit.

The ratchet includes: a driving frame, a convex fixing hole is arranged in the middle of the upper surface thereof, and a lower surface of the driving frame is a push rod connection; a pawl frame having a through hole therebetween, the through hole passing through the fixing hole to fix the pawl frame on an upper surface of the driving frame; the side of the pawl frame is provided Two corresponding tapered holes; the upper surface of the pawl frame is provided with three first positioning holes; two pawls are respectively fixed in the tapered holes by a spring connection, and the pawls are The spring is in contact with the tooth groove of the ring gear at a corresponding position in the handle; the selector button has two bosses on the lower surface thereof, and a second positioning hole is provided on one of the bosses The selector button is fixed to the driving frame and the pawl frame by a screw and the fixing hole. The second positioning hole is provided with a spring and a steel ball, and the spring and the steel ball form a positioning mechanism. When the direction selector button is in the starting position, the positioning mechanism is located in one of the first positioning holes, the boss does not contact the pawl, and the direction selector button drives the driving frame and the Fixing the handle; when the selector button is rotated, the positioning mechanism moves into one of the tapered holes, and The boss at the corresponding push pawl at, away from the cogging of the ring gear on the handle, form a unidirectional movement.

The batch head cover comprises a plurality of head frames, a top rod and a rotating body, wherein: the batch head frame has a fixing hole at a front end thereof for a selected batch head to be ejected, and the inner side wall of the batch head frame A plurality of positioning slots are evenly disposed, and an intermediate passage of the multi-position positioning slot is aligned with a position of the push rod, and a tail slot is disposed on a distal side of the header frame, and the tail slot is used for external pulling Positioning the handle when the handle is; the ram is a strong magnetic steel bar, the top end of the ram is magnetically connected to the bit, the end of the ram is magnetically connected to the push rod; a first through hole is provided for the push rod and the top rod to pass through; a middle portion of the rotating body is hollow, and a side surface of the rotating body is provided with a sloped slide; a sliding frame is disposed in the rotating body, a slider is connected to the slider through a tension spring, a stopper is fixed to the rotating body; a second perforation is disposed on the slider, and the second perforation coincides with a center of the first perforation, The push rod and the top rod are movable within the second perforation; when the handle is pulled outward, the push rod is disengaged a second through hole, the slider moves to the side along the slide of the slide frame and the rotating body under the action of the tension spring, and when the slider moves to the side, the top rod will The bit is snapped into the stop and the bit is in a replaceable position.

The lower end of the rotating body is provided with a rotating positioning hole, and the rotating positioning hole is provided with a spring-connected positioning member, and the combination of the rotating positioning hole and the positioning member can automatically find the positioning groove in the batch head sleeve. Then find the batch.

A retaining ring is disposed between the batch head cover and the handle to prevent the handle from being dislocated when the handle is pulled outward.

The batch head cover comprises a plurality of head frames and an option, the front end of the batch head frame is provided with a fixing hole for a selected batch head to be ejected, and the plurality of positioning grooves are evenly arranged in the batch head frame. The intermediate passage of the multi-position positioning groove and the position of the push rod Consistently, a tail slot is provided on the end side of the header frame; the option is fixed in the batch head sleeve by a fixing bolt, and the option comprises a torsion spring and a swing piece, the swing piece One end of the swinging piece is fixed on the torsion spring, the other end of the pendulum piece is disposed in the intermediate passage, and the other end of the pendulum piece is movable in the intermediate passage under the action of a torsion spring to push and The bit of the push rod is connected.

The push rod is a strong magnetic steel rod.

The batch head cover comprises a batch of headstocks and a plurality of head clamps, the front end of the batch head frame is provided with a fixing hole for a selected batch head to be topped out, and the end of the batch head frame is provided with a tail end a slot is defined in the side wall of the batch head frame; the bit holder is disposed in the selection hole through a rotating shaft, and the bit is clamped in the selection hole to be rotatable, the batch head a plurality of positioning slots are disposed in the clip, the batch heads are correspondingly disposed in the positioning slots, and when the batch head clips are rotated into position, the selected batch heads on the batch head clips are located with the push rods And the position where the fixing holes are consistent.

Because the above technical solution is adopted, the utility model has the following advantages and positive effects compared with the prior art: the present application can replace the screwdriver batch head by pushing and pulling the handle and rotating the handle, and passing the third-stage ratchet through the tail. The combination of quick change and ratchet construction, the structure of the product is simple and convenient, and can be used in a variety of occasions.

DRAWINGS

The object, specific structural features and advantages of the invention will be further understood from the description of the appended claims. In the figure:

Figure 1 is an exploded view of the quick-change screwdriver of the first embodiment of the present invention with a tail ratchet;

Figure 2 is a diagram showing the initial state of the application state of the first embodiment of the present invention;

Figure 3 is a schematic view of a replacement bit of the first embodiment of the present invention;

Figure 4 is a schematic view of the pull-out handle of the first embodiment of the present invention;

Figure 5 is a cross-sectional view of the bit holder of the first embodiment of the present invention;

Figure 6 is a schematic view showing the structure of a rotating main body according to a first embodiment of the present invention;

Figure 7 is a schematic structural view of a ratchet according to a first embodiment of the present invention;

Figure 8 is a schematic structural view of a direction selector button according to a first embodiment of the present invention;

Figure 9 is a schematic view of the application state of the second embodiment of the present invention;

Figure 10 is a second schematic view of the application state of the second embodiment of the present invention;

Figure 11 is a schematic structural view of a third embodiment of the present invention;

Figure 12 is a first schematic view of the application state of the third embodiment of the present invention;

Figure 13 is a second schematic view of the application state of the third embodiment of the present invention.

detailed description

First embodiment:

Referring to Fig. 1, Fig. 1 is an exploded view of the quick change screwdriver of the first embodiment of the present invention with a tail ratchet.

As shown in FIG. 1, the quick-change screwdriver with the tail ratchet of the first embodiment includes a batch head sleeve 2 with a plurality of batch heads 1 therein, a handle 3, a push rod 4 disposed in the handle 3, and Ratchet 5. The batch head cover 2 is provided with a 6-position positioning groove, and the batch head 1 is correspondingly disposed in the positioning groove. The handle 3 is sleeved at the end of the batch head cover 2, and the handle 3 is displaceably locked along the end of the batch head cover 2, that is, the handle 3 can be pushed forward along the batch head cover and fixed to the handle 3 The front end; the handle 3 can also be pulled back and fixed to the rear end of the handle 3. The ratchet 5 is a three-position ratchet, i.e. the ratchet 5 can be used to lock the handle 3 or form a left- or right-direction one-way movement with the handle 3. A ratchet 5 is provided at the inner end of the handle 3. The end of the push rod 4 is fixed to the ratchet 5, and the push rod 4 moves forward along with the movement of the handle 3 and selects, pushes out a selected bit or pulls back to retrieve the selected The header. The screwdriver with the tail ratchet combines the quick change and ratchet structure, and has a simple structure, which can realize various ways of selecting the batch head.

The ratchet 5 includes a drive frame 51, a pawl frame 52, two pawls 53, a selector button 54 and the like. See the structural diagram of the ratchet shown in Figure 7 for details.

A convex fixing hole is provided in the middle of the upper surface of the driving frame 51, and a lower surface of the driving frame 51 is connected to the push rod 4. The role of the drive frame is to drive the movement of the push rod.

A perforation is provided in the middle of the pawl frame 52, and the perforation passes through the fixing hole to fix the pawl frame to the upper surface of the drive frame. The side of the pawl frame 52 is provided with two corresponding tapered holes 521 and 522. Upper surface of the pawl holder 52 Three first positioning holes 523 are provided.

The two pawls 53 are respectively fixed and fixed in the tapered hole by a spring 55, and the pawl 53 is pressed against the tooth of the ring gear of the corresponding position in the handle 3 under the action of the spring 55. Inside the slot.

As shown in FIG. 8, the selector button 54 is provided with two

bosses

541 and 542 on the lower surface thereof, and one of the bosses 541 is provided with a second positioning hole 5411. The selector button 54 is fixed to the drive frame 51 and the pawl holder 52 by a screw 56 in combination with the fixing hole. A spring 57 and a steel ball 58 are disposed in the second positioning hole 5411, and the spring spring 57 and the steel ball 58 form a positioning mechanism.

When the direction selector button 54 is in the initial position, the positioning mechanism is located in one of the first positioning holes 523, the

bosses

541, 542 do not contact the pawl, and the direction selector button 54 The drive frame 51 is fixed to the handle 3; when the direction selector button 54 rotates, the positioning mechanism moves into one of the tapered holes, and the corresponding boss pushes the corresponding pawl It is detached from the tooth groove of the ring gear on the handle to form a one-way motion. One-way motion can be done to the left or to the right.

The batch head cover 2 includes a plurality of head frames 21, a top rod 22, and a rotating body 23. among them:

As shown in FIG. 5, the front end of the headstock 21 is provided with a fixing hole 211 for a selected batch head to be ejected, and a 6-position positioning slot 212 is evenly disposed on the inner side wall of the header frame 21. The intermediate passage of the gear positioning groove coincides with the position of the push rod 4, that is, the push rod can pass through the intermediate passage. A tail groove 213 is provided on the end side of the head frame 21, and the tail groove 213 is used to position the handle when the handle is pulled out.

The jack 22 is a strong magnetic steel bar, the top end of which is magnetically connected to the bit, and the end of the jack 22 is magnetically connected to the push rod 4.

The rotating body 23 is as shown in FIG. A first through hole is provided in the middle of the rotating body 23 for the push rod 4 and the top rod 22 to pass therethrough. The rotating main body 23 is hollow at the center, and a side inclined rail 232 is disposed on the side wall. A slide frame 24 is disposed in the rotating body 23, and a slider 25 is connected to the slide frame 24 by a tension spring, and a stopper 26 is fixed to the rotating body. The slider 25 is provided with a second perforation, and the second perforation coincides with the center of the first perforation, and the push rod and the plunger can move within the second perforation. When the handle is pulled outward, the push rod 4 is disengaged from the second through hole, and the slider 25 moves to the side along the slide rail of the slide frame and the rotating body under the action of the tension spring. When moving to the side, The jack pulls the bit and the stop 26 in a replaceable position, as shown in FIG.

As shown in FIG. 6, the lower end of the rotating body 23 is provided with a rotating positioning hole 231. The rotating positioning hole 231 is provided with a positioning member 233 connected by a spring 232. The combination of the rotating positioning hole and the positioning member can automatically find a positioning groove in the batch head sleeve, and then find the batch head.

A retaining ring 6 is disposed between the batch head cover 2 and the handle to prevent the handle from being dislocated when the handle is pulled outward.

The application status of this application is as follows:

2 is a schematic view of the initial state of the application state of the first embodiment of the present invention. In the initial state of the product: the jack 22 holds the batch head 1 and the push rod 4 tightly together. Since the selected batch head 1 protrudes the batch head sleeve, it is placed in the fixing hole of the batch head frame, and is applied to the handle, and the batch head cover 2 is driven by the action of the tail ratchet to make it into a screwdriver.

Replace the screwdriver:

As shown in FIG. 3, the handle is pulled apart, and the push rod is retracted. Due to the magnetic action of the jack 22, the selected batch 1 moves backward with the jack 22; when the push rod 4 is separated from the slider When the second perforation is applied, the slider 25 moves to the side with the slide rails 232 on the slide frame 24 and the rotating main body 23 by the tension spring. After the side edges, due to the magnetic action of the ejector pins 22, The bit 1 is sucked together with the jack 22 and a stopper fixed to the rotating body. At the same time, the bit is in a replaceable position.

When the handle 3 is pulled to the outermost end, as shown in FIG. 4, the handle is fixed in the tail groove. A retaining ring 6 is disposed between the batch head cover 2 and the handle 3 to prevent the handle from being dislocated when the handle is pulled outward.

Turn the handle and replace the bit. When the handle 3 is pulled to the outermost end, the head frame 21 and the rotating body 23 have been freed from the constraint of the 6-position positioning groove, and the head frame 21 and the handle 3 can be freely rotated. As shown in FIG. 6, the lower end of the rotating body 23 is provided with a rotating positioning hole 231. a spring-connected positioning member is disposed in the rotating positioning hole 231, and the combination of the rotating positioning hole and the positioning member can automatically find a positioning slot in the batch head sleeve, and then find the batch head, and replace the corresponding batch head.

Restore the handle and exit the batch. Push the handle 3 to the batch head. The push rod 4 then runs in the same direction, while pushing the slider to slide in the middle under the action of the slide; when the push rod 4 and the top rod 22 are coincident, the push rod will push the top rod 22 and the bit 1 Move forward together until the bit exposes the fixing hole on the header. a tail slot on the header and a closure on the handle, The entire tool is in a state of being used.

Second embodiment:

The second embodiment differs from the first embodiment in the difference in the batch headgear. This is shown in conjunction with Figures 9 and 10. The batch head cover 7 includes a plurality of headstocks 71 and an option 72.

The front end of the header frame 71 is provided with a fixing hole 711 for a selected batch head to be ejected, and the plurality of positioning grooves 712 are evenly arranged in the batch head frame 71. The intermediate passage of the multi-position positioning groove 712 is aligned with the position of the push rod 4, and a tail groove is formed on the end side of the head frame 71.

The option 72 is secured within the batch of head covers by a mounting bolt 73. The option 72 includes a torsion spring 721 and a pendulum piece 722, one end of which is fixed to the torsion spring 721. The other end of the swinging piece 722 is disposed in the intermediate passage, and the other end of the swinging piece 722 is movable in the intermediate passage under the action of the torsion spring 721 to push the bit connected to the push rod. The push rod 4 is a strong magnetic steel rod, so that the push rod and the bit that are attracted by the magnetic force can be pushed by the pendulum. The pendulum piece 722 pushes and removes the bit, and completes the bit that is connected to the lifter.

Third embodiment:

The third embodiment differs from the first embodiment in the difference in the batch headgear. This is shown in conjunction with Figures 11-13.

The batch headgear 8 includes a plurality of headstocks 81 and a plurality of head clamps 82. The front end of the header 81 is provided with a fixing hole 811 for a selected batch to be ejected. A tail slot is disposed on a side edge of the end frame 81, and a selection hole is defined in a sidewall of the header frame 81. The bit holder 82 is disposed in the selection hole through a rotating shaft 821. The bit holder 82 is rotatable in the selection hole, and the bit holder is provided with a multi-position positioning groove. Correspondingly disposed in the positioning groove, and when the bit holder is rotated into position, the selected bit on the bit holder is located at a position coincident with the push rod and the fixing hole.

In summary, the purpose of the present application is to integrate the function of the ratchet and the quick change of the bit, simplifying the structure of the screwdriver and being suitable for various occasions.

The above embodiments are all examples of the present application and do not limit the scope of the application. The scope of the claims to be protected by this application is defined by the claims.

Claims

The quick-change screwdriver with a tail ratchet includes a batch head sleeve with a plurality of batch heads therein, a handle, a push rod and a ratchet disposed in the handle, and is characterized by:

a plurality of positioning slots are disposed in the batch head sleeve, and the batch heads are correspondingly disposed in the positioning slots;

The glove is disposed at an end of the batch head sleeve, and the handle is movably locked along an end of the batch head sleeve;

The ratchet is a three-position ratchet disposed at an inner tail end of the handle, the ratchet for locking the handle or forming a one-way movement to the left or right with the handle;

The end of the push rod is fixed to the ratchet, the push rod moves forward as the handle moves and selects, pushes the selected bit or pulls back to retrieve the selected bit.
The quick-change screwdriver with a tail ratchet according to claim 1, wherein the ratchet comprises:

a driving frame, wherein a convex fixing hole is disposed in an upper portion of the upper surface thereof, and a lower surface of the driving frame is connected to the push rod;

a pawl frame having a through hole therebetween, the through hole passing through the fixing hole to fix the pawl frame on an upper surface of the driving frame; the side of the pawl frame is provided with two corresponding cones a hole; the upper surface of the pawl frame is provided with three first positioning holes;

Two claws respectively fixed in the tapered hole by a spring connection, and the pawl is pressed by the spring against the tooth groove of the ring gear at a corresponding position in the handle;

The selector button has two bosses on the lower surface thereof, and one of the bosses is provided with a second positioning hole, and the direction selector button is coupled with the fixing hole through a screw to the driving frame and the pawl The frame is fixed, and the second positioning hole is provided with a spring and a steel ball. The spring and the steel ball form a positioning mechanism. When the direction selector button is in the initial position, the positioning mechanism is located in one of the first positioning holes. The boss does not contact the pawl, the selector button fixes the drive frame to the handle; when the selector button rotates, the positioning mechanism moves to one of the tapers The bosses in the holes and corresponding positions push the corresponding pawls out of the tooth grooves of the ring gear on the handle to form a one-way motion.
The quick-change screwdriver with a tail ratchet according to claim 1, wherein the batch head cover comprises a plurality of headstocks, a jack and a rotating body, wherein:

The head frame has a fixing hole at a front end thereof for a selected batch head to be ejected, and the inner side wall of the batch head frame is evenly distributed a plurality of positioning slots are provided, wherein the intermediate passage of the multi-position positioning groove is aligned with the position of the push rod, and the end side of the batch head frame is provided with a tail groove, and the tail groove is used for pulling the handle Positioning the handle;

The jack, which is a strong magnetic steel bar, the top end of the jack is magnetically connected to the bit, and the end of the jack is magnetically connected to the push rod;

The rotating body is provided with a first perforation for the push rod and the jack to pass through; the central portion of the rotating body is hollow, and the side wall is provided with a sloped slide; the rotating body is provided a slide frame, wherein the slide frame is connected to a slider by a tension spring, and a stopper is fixed on the rotating body; the slider is provided with a second perforation, and the second perforation is The centers of the first perforations coincide, and the push rod and the top rod are movable within the second perforations;

When the handle is pulled outward, the push rod is disengaged from the second through hole, and the slider moves to the side along the slide rail of the slide frame and the rotating body under the action of the tension spring, when moving to The ram pulls the bit and the stop when the side is in a replaceable position.
The quick-change screwdriver with a tail ratchet according to claim 3, wherein the lower end of the rotating body is provided with a rotating positioning hole, and the rotating positioning hole is provided with a spring-connected positioning member, the rotation The combination of the positioning hole and the positioning member can automatically find the positioning groove in the batch head sleeve, and then find the batch head.
The quick-change screwdriver with a tail ratchet according to claim 1, wherein a retaining ring is disposed between the batch head cover and the handle to prevent the handle when the handle is pulled outward Dislocation.
The quick-change screwdriver with a tail ratchet according to claim 1, wherein the batch head cover comprises a batch of headstocks and an option, and the front end of the batch head frame is provided with a selected batch head a plurality of positioning slots are evenly disposed in the plurality of positioning slots, wherein the intermediate passage of the multi-position positioning slot is consistent with the position of the push rod, and the end side of the batch head frame is provided with a a tail slot; the option is fixed in the batch head sleeve by a fixing bolt, the option includes a torsion spring and a swing piece, one end of the swing piece is fixed on the torsion spring, and the swing piece is The other end is disposed in the intermediate passage, and the other end of the swinging piece is movable in the intermediate passage under the action of the torsion spring to push the bit connected to the push rod.
The quick-change screwdriver with a tail ratchet according to claim 6, wherein the push rod is a strong magnetic steel rod.
The quick-change screwdriver with a tail ratchet according to claim 1, wherein the batch head cover comprises a batch of headstocks and a plurality of head clamps, and a front end of the batch head frame is provided for a selected batch a fixing hole in which the head is pushed out, the head frame a tail slot is disposed on a side of the end, and a selection hole is defined in a sidewall of the head frame; the bit holder is disposed in the selection hole through a rotating shaft, and the bit is clamped in the selection hole Rotatable, the batch head clip is provided with a plurality of positioning slots, the batch heads are correspondingly disposed in the positioning slots, and when the batch head clips are rotated into position, the selected batches on the batch head clips The head is located at a position coinciding with the push rod and the fixing hole.