CN201960512U - Screwdriver - Google Patents

Abstract

The utility model discloses a screwdriver, which belongs to a hand tool, and comprises a handle, a wheel-shaped bit frame, a push rod, and a push button assembly. When the first positioning part of the front part extends into a receiving hole of the bit holder, the bit in the receiving hole is pushed to the bit sleeve on the handle until the bit extends out of the bit sleeve. When the push button assembly is located at the rear of the slideway on the handle, the push rod is located at the rear side of the bit holder and brings the corresponding bit back into the corresponding accommodating hole. It has few components and simple structure; when replacing the bit from the bit holder, it is only necessary to turn the bit holder and push the push rod to move back and forth, without separating the bit holder from the handle, which is simple and easy; it can be seen through the seam on the handle Assembled with the bit holder at the installation position, the bit to be used can be accurately turned to correspond to the push rod and further pushed out with the push rod.

Description

screwdriver

technical field

The utility model belongs to hand tools, in particular to a screwdriver, which is provided with a bit frame like a wheel-type magazine for arranging a plurality of different types of bits, and the bit frame can be rotated like rotating a magazine when in use. To choose different forms of batch heads.

Background technique

Most of the existing screwdrivers have a screwdriver extending forward from the handle, and the front end of the screwdriver forms a screwdriver or installs a screwdriver. It is inconvenient to use the screwdriver or the bit to be replaced when different types of bit bits are required to work. No. US6314995A, US 6138537A, and US 7028593B1 patents respectively claim to protect a kind of screwdriver that includes a screwdriver, and they all have a bit holder with a rotary magazine clip for placing a plurality of different types of bits. Rotate the bit holder like turning the clip to change different types of bits. But they have the following disadvantages:

1. complex structure;

2. When changing the bit from the bit holder, the handle needs to be separated from the installation position of the bit holder, which is inconvenient to operate;

3. When screwing the screw, it is necessary to force the push rod forward with the handle to apply torque to the screw, and the push rod is easy to retract;

4. The applied torque is mostly limited by the matching structure of the handle and the installation position of the bit holder. Since the matching structure is usually a plastic part, the torque is limited;

5. The position corresponding to the bit holder and the push rod is blocked, which will block the user's sight, and the bit cannot be replaced accurately;

6. It is inconvenient to replace the bit rack, so it is also inconvenient to replace the bit on the bit rack;

7. Lack of positioning on the bit holder, the ejector rod cannot be accurately aligned with the bit placement hole on the bit holder, so the required bit cannot be smoothly pushed out.

Contents of the invention

The technical task of the utility model is to provide a screwdriver with simple structure and convenient use.

In order to realize the purpose of the utility model, the utility model adopts the following technical solutions:

A screwdriver is characterized in that it comprises:

A bit sleeve is provided at the front end of the handle, a seam extending forward and backward is provided on the handle at a position behind the bit sleeve and a mounting position visible from the seam is provided, and a slideway is provided on the edge of the seam, A first positioning part is arranged on the front part of the slideway;

The wheel-shaped bit holder is rotatably mounted on the installation position relative to the front and rear directions of the handle in its axial direction, and there are axial accommodation holes for accommodating bits distributed thereon, and the accommodation holes can be rotated to Corresponding to the axial direction of the bit sleeve;

a push rod, which is arranged in the handle along the front and rear directions and axially corresponds to the bit sleeve;

a push button assembly, which is assembled with the push rod and slidably fitted on the slideway and can be positioned at the first positioning portion;

When the push button assembly is positioned at the first positioning portion, the push rod extends into a receiving hole of the bit holder to push the bit in the receiving hole toward the bit sleeve When the bit extends out of the bit sleeve, the push rod is located at the rear side of the bit holder when the push button assembly is located at the rear of the slideway.

As an optimal technical means for configuring a bit sleeve at the front end of the handle, a ratchet structure is provided at the front end of the handle, the bit sleeve is arranged on the ratchet structure, and a There is a through hole connecting the bit sleeve and the receiving hole on the bit holder.

Specifically, the ratchet structure includes a pawl seat, a ratchet sleeve and a rotating sleeve:

The pawl seat is fixed on the front end of the handle, and the pawl seat is provided with two reverse swingable pawls and a dial for controlling the positions of the two pawls. The dial There are two shifting blocks respectively corresponding to the two ratchets;

The ratchet sleeve is fitted on the pawl seat for engaging with the pawl;

The rotating sleeve is sleeved on the outside of the pawl seat and connected with the dial;

The bit sleeve is arranged on the ratchet sleeve, and the through hole is opened on the ratchet seat.

Further, the inner wall of the rotating sleeve has three positioning grooves, and the pawl seat is provided with a positioning pin, and the positioning pin is supported by an elastic element and located in one positioning groove. An elastic element is supported between the two ratchets to make the two ratchets open and lean against the ratchet sleeve.

As another preferred technical means of configuring a bit sleeve at the front end of the handle, a structural member is provided at the front end of the handle, and the bit sleeve is arranged on the structural member.

In order to make the slideway wear-resistant and have sufficient strength, the slideway is a metal piece.

As a preferred technical means of the first positioning part, the first positioning part is a notch provided on the slideway. At this time, a preferred technical means to realize the positioning of the push button assembly at the first positioning part is: the tail of the push rod extends out of the base toward the direction of the slideway, and the push button assembly includes a locking piece, a touch button As well as the elastic element, the locking piece is movably arranged on the base along the extending direction of the base and can be snapped into and disengaged from the notch within its range of motion, and the elastic element is placed The elastic force between the locking piece and the base presses the locking piece into the gap, and the contact button is assembled on the base in a forward and backward sliding manner and set on it to force the locking piece to move. touch part. Another preferred technical means for realizing the positioning of the push button assembly at the first positioning part is: the tail of the push rod extends out of the base toward the direction of the slideway, and the push button assembly includes a touch button and an elastic element. The touch button is provided with a locking edge, and the touch button is movably arranged on the base along the extending direction of the base, and the locking edge can be snapped into the touch button within the range of movement of the touch button. The above-mentioned notch and escape from the above-mentioned notch, the said elastic element is placed between the said touch button and the base to elastically press the said locking edge into the said notch. Further, a bearing portion for bearing the push rod is provided inside the handle along the extending direction of the slideway.

In order to realize the positioning of the push button assembly, a second positioning portion for positioning the push button assembly is provided at the rear of the slideway. Specifically, the structure of the second positioning part may be the same as that of the first positioning part; the push rod is located at the rear of the bit holder when the push button assembly is positioned at the second positioning part. side.

In order to realize the rotation of the bit holder on the handle and facilitate installation and removal, the front wall of the installation position and the front end of the bit holder and the rear wall of the installation position and the rear end of the bit holder are respectively A pit and a telescopic shaft head are provided, and the elastic element is supported at the rear end of the telescopic shaft head, and the telescopic shaft head is located in the corresponding pit to realize the installation of the bit holder at the installation position.

In order to realize the positioning of the bit holder on the handle so that the push rod can accurately correspond to the receiving hole on the bit holder, the front wall or/and rear wall of the installation position is separated from the front end or/and rear end of the bit holder. The positioning pin and the positioning groove are set, and the elastic element is supported at the rear end of the positioning pin, and the positioning pin is located in the positioning groove to realize the positioning of the bit holder on the handle.

In order to prevent the bits in the receiving hole from falling off, the inner wall of the receiving hole has an elastic structure.

In order to identify the form of the bit in the receiving hole, the position corresponding to each receiving hole is marked with a bit on the bit holder. Or the bit holder is made transparent.

In order to spare more bit bits, the handle is provided with an accommodation part for storing spare bit racks. Or a spare bit storage rack is provided on the handle.

In order to facilitate holding and exerting a pushing force on the push rod, the handle has a grip portion extending to one side of the push rod.

As a preferred technical means for the front end of the push rod to cooperate with the bit, the front end of the push rod or/and the bit is provided with a combination structure for the combination of the two, and the push rod is on the When the push button assembly is located at the rear of the slideway, it is located at the rear side of the bit holder and relies on the combination structure to bring the corresponding bit back to the corresponding accommodating hole. Specifically, the combination structure can be given to the front end of the push rod or/and the magnetic bit for the two to adsorb, or it can be separately arranged at the front end of the push rod and behind the bit Tenon and tenon at the end.

As an optimal technical means to prevent the bit from interfering with the rotation of the bit holder, the rear end of the receiving hole has a blocking part; or there is a gap between the rear end of the bit holder and the rear wall of the installation position, and the push The front end of the rod corresponds to the gap when the push button assembly is located at the rear of the slideway.

The beneficial effects of the utility model are:

1. Few components and simple structure;

2. When replacing the bit from the bit holder, you only need to turn the bit holder and push the push rod to move back and forth, without separating the bit holder from the handle, which is simple and easy;

3. When the screw is screwed, the ejector rod is positioned on the slideway on the handle through the push button assembly, the ejector rod is not easy to retract, and the applied torque is borne by the bit sleeve, which can withstand a relatively large torque;

4. The bit frame assembled in the installation position can be seen through the seam on the handle, so the bit to be used can be accurately turned to correspond to the push rod and further pushed out with the push rod;

5. The bit frame is assembled in the installation position through the telescopic shaft and the pit, which is convenient for installation and removal;

6. The bit holder can be positioned on the handle through the cooperation of the telescopic positioning pin and the positioning groove to ensure that a certain accommodation hole on the bit holder accurately corresponds to the push rod so that the push rod can smoothly push out the bit in the accommodation hole .

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of a preferred embodiment of the screwdriver of the present invention.

FIG. 1A is a sectional view taken along the M-M direction of FIG. 1, showing the positioning of the rotating sleeve 15d on the pawl seat 15b.

Fig. 2 is a schematic diagram of the ratchet structure and the bit sleeve disposed on the ratchet structure in the structure shown in Fig. 1 .

Fig. 3 is an A-A sectional view of the structure shown in Fig. 2 .

Fig. 4 is a B-B sectional view of the structure shown in Fig. 2 .

FIG. 5 is a schematic diagram of the ratchet sleeve and the bit sleeve disposed on the ratchet sleeve in the structure shown in FIG. 4 .

Fig. 6 is a left side view of Fig. 5 .

Fig. 7 is a schematic diagram of the bit holder in the structure shown in Fig. 1 .

Fig. 8 is a left side view of Fig. 7 .

Fig. 9 is a sectional view taken along line C-C of Fig. 8 .

Fig. 10 is a sectional view taken along line D-D of Fig. 7 .

Fig. 11 is a right side view of Fig. 7 .

Fig. 12 is a schematic diagram of a bit on the bit holder in the structure shown in Fig. 1 .

Fig. 13 is a left side view of Fig. 12 .

Fig. 14 is a sectional view taken along line E-E of Fig. 13 .

Fig. 15 is a sectional view taken along line F-F of Fig. 12 .

Fig. 16 is a schematic view of the pawl seat in the structure shown in Fig. 1 .

Fig. 17 is a left side view of Fig. 16 .

Fig. 18 is a sectional view taken along the line H-H in Fig. 17 .

Fig. 19 is a cross-sectional view taken along line G-G in Fig. 16 .

Fig. 20 is a right side view of Fig. 16 .

Fig. 21 is a schematic diagram of the slideway in the structure shown in Fig. 1 .

Fig. 22 is an assembly diagram of the push rod, the push button assembly and the slideway in the structure shown in Fig. 1 .

Fig. 23 is an enlarged schematic diagram of the assembly structure of the push rod, the push button assembly and the slideway shown in Fig. 22 .

Fig. 24 is a sectional view taken along line K-K in Fig. 23 .

Fig. 25 is an assembly diagram of another push rod, push button assembly and slideway that can replace the assembly structure shown in Fig. 22 .

Fig. 26 is an enlarged schematic diagram of the assembly structure of the push rod, the push button assembly and the slideway shown in Fig. 25 .

Fig. 27 is a sectional view taken along line L-L in Fig. 26 .

Fig. 28 is a schematic view of assembling the pawl seat on the handle with the structure shown in Fig. 1 .

Fig. 29 is a sectional view along J-J direction of Fig. 28 .

Fig. 30 is a schematic diagram of placing a spare bit rack on the handle.

Fig. 31 is a schematic diagram of placing a spare bit on the handle.

Explanation of symbols in the figure:

1-handle, 11-bit sleeve, 12-seam, 13-installation position, 14-slide, 14a-first positioning part, 14b-second positioning part, 15-ratchet structure, 15a-through hole, 15b -Pawl seat, 15c-Ratchet sleeve, 15d-Rotary sleeve, 15e-Pawl, 15f-Dial piece, 15g-Dial block, 15h-Positioning groove, 15i-Positioning pin, 16-Slide, 17-Step, 18 - pit, 19 - positioning marble, 110 - accommodation part, 111 - grip part;

2-Bit frame, 21-Bit head, 22-Accommodating hole, 23-Preventing part, 24-Telescopic shaft head, 25-Positioning slot, 26-Elastic structure, 27-Bit head mark, n-n-Axis of bit frame Towards;

3-push rod, 31, 32-base;

4-push button assembly, 41-lock plate, 42-touch button, 43-touch part, 44-touch button, 45-locking edge;

5- Spare bit rack;

6- Spare bit storage rack.

Detailed ways

The utility model will be further described through specific embodiments below in conjunction with the accompanying drawings of the description.

Fig. 1 has shown the sectional structure of a preferred embodiment of the utility model screwdriver, and this screwdriver comprises:

The handle 1 is provided with a bit sleeve 11 at its front end, and a seam 12 extending forward and backward is provided on the handle 1 at a position behind the bit sleeve 11 and a mounting position 13 visible from the seam 12 is provided, and a slideway is provided on the edge of the seam 12 14. A first positioning part 14a is provided on the front part of the slideway 14;

Rotary wheel-shaped bit holder 2 (see Figure 7-15), its axial direction n-n (that is, its axis direction, see Figure 1, Figure 12, Figure 14-15) relative to the front and rear direction of the handle (the front and rear direction of the handle is defined as the slit 12, slideway 14 and push rod 3 described below are rotatably installed in the installation position 13, on which there are axial accommodation holes 22 that accommodate bits 21, and the accommodation holes 22 can be Turn to correspond to the axial direction of the bit sleeve 11;

Push rod 3 (see Figures 22 and 25), which is placed in the handle 1 along the front and rear directions and axially corresponds to the bit sleeve 11;

The push button assembly 4 (see Figures 23, 24, 26, 27), which is assembled with the push rod 3 and slidably fitted on the slideway 14 and can be positioned on the first positioning part 14a;

When the push button assembly 4 is positioned at the first positioning part 14a, the push rod 3 extends into a receiving hole of the bit holder 2, and pushes the bit in the receiving hole toward the bit sleeve 11 until the bit extends out of the bit cover. The cylinder 11 and the push rod 3 are located at the rear side of the bit holder 2 when the push button assembly 4 is located at the rear on the slideway 14 .

The screwdriver shown in Fig. 1 above has few parts and simple structure, which brings convenience to use.

When using the screwdriver, hold the handle 1 with your hand, and turn the bit holder 2 to turn the accommodating hole containing the required bits to correspond to the push rod 3. At this time, push the push rod 3 through the push button assembly 4 Push forward, the front end of the push rod 3 touches the bit in the corresponding receiving hole and combines with the bit until the push button assembly 4 is positioned at the first positioning part 14a, then the front end of the push rod 3 extends into the corresponding receiving hole to remove the bit. The bit is pushed toward the bit sleeve 11 until the bit protrudes out of the bit sleeve 11 for screwing the screw. Since the cross-section of the bit body is usually a regular hexagon, the cross-section of the inner hole of the bit sleeve 11 should also be a regular hexagon so as to correspond to the bit for torque transmission; since the push button assembly 4 is positioned in the first position part 14a, so the push rod 3 cannot be retracted. At this time, the handle 1 can apply a thrust to the push rod 3 to hold the bit 21 on the screw and then screw the screw.

After use, the push button assembly 4 can be operated to release the positioning from the first positioning part 14a, and then pull the push rod 3 back to the rear of the slideway 14 until the push rod 3 is retracted from the corresponding receiving hole and is located at The rear side of the bit holder 2, so as not to hinder the rotation of the bit holder, and the bit in the bit sleeve 11 can be retracted into the corresponding receiving hole on the bit holder.

When the screwdriver is used, the push rod can be pushed or pulled back by rotating the bit holder and the control push button assembly, and the operation is simple. And because it is equipped with a wheel-type clip-type bit holder like a revolver pistol, and when in use, the bit holder can be rotated like a magazine to select different types of bits, and the bit is pushed like a bullet. Bar is released forward, so the utility model can be called a gun screwdriver.

In use, when the screw is screwed, the ejector rod is positioned on the slideway on the handle through the push button assembly, and the ejector rod is not easy to retract, and the applied torque is borne by the bit sleeve, which can withstand a relatively large torque; through the seam on the handle It can be seen that the bit holder assembled at the installation position, so the bit to be used can be accurately turned to correspond to the push rod and further pushed out with the push rod.

So far, the above-mentioned structure of this embodiment clarifies the utility model concept of the utility model and realizes the technical features of the utility model. However, as a further improvement and supplement to the above-mentioned technical solution, this embodiment also includes the following technical means, so that they can be selected from the technical solution described in the previous paragraph according to the specific effect when implementing the utility model.

First of all, as the preferred technical means of configuring the bit sleeve 11 at the front end of the handle 1 in this preferred embodiment, see Fig. 11 is located on the ratchet structure 15, on the ratchet structure 15, a through hole connecting the bit sleeve 11 and the receiving hole on the bit frame is provided. In order to ensure the strength, the ratchet mechanism 15 can be made of metal material. Therefore, the directional rotation of the bit sleeve 11 and its inner bit can be realized through the ratchet structure 15 (clockwise rotation to apply torque or counterclockwise rotation to apply torque), which provides convenience for use. Specifically, the ratchet structure 15 includes a ratchet seat 15b, a ratchet sleeve 15c and a rotary sleeve 15d: the ratchet seat 15b is fixed to the front end of the handle 1 and is integrated with the handle, and the ratchet seat 15b is provided with two reverse swingable The ratchet 15e and the dial 15f used to control the position of the two ratchets, the dial 15f has two dials 15g respectively corresponding to the two ratchets 15e; the ratchet sleeve 15c is set on the ratchet seat 15b. To engage with the pawl 15e; the rotary sleeve 15d is set on the outside of the pawl seat 15b and connected with the dial 15f; the bit sleeve 11 is arranged on the ratchet sleeve 15b, and the through hole 15a is opened on the pawl seat 15b. By setting the bit sleeve on the ratchet mechanism, the bit 21 is pushed into the bit sleeve 11 by the push rod 2 from the receiving hole of the bit holder through the through hole 15a or from the bit sleeve through the through hole 15a. The through hole pulls back the receiving hole of the bit holder. This ratchet mechanism, when turning the rotating sleeve 15d, can drive the two shifting blocks 15g of the dialing piece 15f to change the position state of the two ratchets 15e, and then change the meshing relationship between the two ratchets and the ratchets in the ratchet sleeve 15c (ie gear shift) to realize the work requirements: as shown in Figure 3, the two pawls 15e are engaged with the inner ratchet teeth of the ratchet sleeve 15c at the same time, so whether the handle is turned clockwise or counterclockwise, the The torque from the handle is transmitted to the bit sleeve 11 through the pawl seat 15b, one of the pawls, and the ratchet sleeve 15c, so that the bit applies force to the screw; When the block 15g rotates an angle clockwise, one of the ratchets (the upper one shown in the figure) is pushed away from the ratchet sleeve 15c, and the other ratchet (the lower one shown in the figure) continues to contact with the ratchet sleeve 15c At this time, turning the handle counterclockwise can transmit the torque from the handle to the bit through the pawl seat 15b, the pawl engaged with the ratchet sleeve, the ratchet sleeve 15c, and the bit sleeve 11, clockwise When the handle is turned in the opposite direction, the pawl meshed with the ratchet sleeve can be driven by the pawl seat to slide over the ratchet teeth of the ratchet sleeve, without giving torque to the batch rod, so that the handle turns; When the two shifting blocks 15g are turned counterclockwise by an angle, one of the pawls (the lower one shown in the figure) is pushed away from the ratchet sleeve, and the other pawl (the upper one shown in the figure) continues to contact with the ratchet sleeve At this time, turning the handle clockwise can transmit the torque from the handle to the bit through the pawl seat 15b, the pawl engaged with the ratchet sleeve, the ratchet sleeve 15c, and the bit sleeve 11, counterclockwise When the handle is turned in the opposite direction, the pawl engaged with the ratchet sleeve can be driven by the pawl seat to slide over the ratchet teeth of the ratchet sleeve, and the handle turns without giving torque to the batch rod. Further, referring to FIG. 1A, the inner wall of the rotating sleeve 15d has three positioning grooves 15h, and the pawl seat 15b is provided with a positioning pin 15i, and the positioning pin 15i is supported by an elastic element and is located in one positioning groove. Therefore, the rotary sleeve 15d can be positioned in the circumferential direction, so no matter the rotary sleeve is rotated to any of the above three working positions, the position is maintained through positioning. An elastic element is supported between the two ratchets 15e to make the two ratchets open and close to the ratchet sleeve. This ensures that the ratchet is engaged with the ratchet sleeve, and supports the two ratchets through an elastic element, with few parts and a compact structure.

Secondly, as another preferred technical means of configuring the bit sleeve 11 at the front end of the handle in this preferred embodiment, a structural member is arranged at the front end of the handle 1, and the bit sleeve is arranged on the structural member. If the pawl seat of the ratchet mechanism is used as a structural part, the bit sleeve can be processed on the pawl seat, or the ratchet sleeve with the bit sleeve of the ratchet mechanism is used as a structural part, and the It is also acceptable for the ratchet to be sleeved on the front end of the handle. The reason why the structural member is arranged at the front end of the handle is to increase the strength of the bit sleeve and facilitate processing and manufacturing. If the strength of the handle itself is sufficient, the bit sleeve can be installed to transmit torque to the bit and there is a suitable processing method. , then a bit sleeve can be directly processed at the front end of the handle as an equivalent technical means.

In this preferred embodiment, in order to make the slideway 14 wear-resistant and have sufficient strength, the slideway 14 (see FIG. 21 ) is a metal part and is assembled on the handle.

As a preferred technical means of the first positioning part in this preferred embodiment, the first positioning part 14a is a notch provided on the slideway 14 (see FIG. 21 ).

When the first positioning part 14a is a notch provided on the slideway, a preferred technical means to realize the positioning of the push button assembly 4 on the first positioning part 14a is: referring to Figures 22-24, the tail of the push rod 3 faces toward the The direction extends out of the base 31, and the push button assembly 4 includes a locking piece 41, a touch button 42 and an elastic element. The locking piece 41 is movably arranged on the base 31 along the direction in which the base 31 extends and can be snapped into and out of the notch within its range of motion. When the elastic element is placed between the locking piece 41 and the base 31, the locking piece 41 is elastically pressed into the notch, and the touch button 42 is slidably assembled on the base 31 forward and backward, and a touch part 43 is arranged on it to force the locking piece to move. As shown in the figure, the touch part is an arc surface with short ends and a high middle (or an inclined surface with short ends and a high middle). With such a structure, when the lock piece 41 is stuck in the gap as shown in the figure to realize the positioning of the push button assembly 4 on the slideway 14, the touch button 42 can be pulled backward by hand, and the lock piece 41 can be pressed by the touch part 43 to overcome the elasticity. The elastic force of the element makes the locking plate 41 escape from the gap to realize the unlocking of the push button assembly 4 on the slideway 14, and then the push button assembly 4 can be pulled back on the slideway 14; when the push button assembly 4 is pulled to the bottom Also mentioned as the notch of the second positioning portion 14b, the locking piece 41 is popped into the notch under the action of the elastic element to realize the positioning of the push button assembly 4 . Conversely, when the push button 42 is pushed forward from the notch as the second positioning portion 14b, the action of the push button assembly 4 is the same as that of pulling the touch button backward from the notch as the first positioning portion, which will not be repeated here.

When the first positioning part 14a is a notch provided on the slide 14, another preferred technical means to realize the positioning of the push button assembly 4 at the first positioning part 14a is: referring to Figures 25-27, the tail of the push rod 3 slides toward the The direction of the track 14 extends out of the base 32, the push button assembly 4 includes a touch button 44 and an elastic element, the touch button 44 is provided with a locking edge 45, the touch button 44 is movably arranged on the base 32 along the extending direction of the base and the locking edge 45 Within the movable range of the touch button, it can be inserted into the notch and come out of the notch. The elastic element is placed between the touch button 44 and the base 32 to elastically press the locking edge 45 into the notch. With such a structure, when the locking edge 45 is stuck in the gap as shown in the figure to realize the positioning of the push button assembly 4 on the slideway 14, first press the touch button 44 downwards to overcome the elastic force of the elastic element to make the locking edge 45 slide from the gap. The positioning of the push button assembly in the gap is released, and then the push button 44 can be pulled backwards to pull the push rod back; when the push button assembly 4 is pulled to the second positioning part 14b which will be described below When the contact button is released, the contact button 44 is bounced up under the action of the elastic element, so that the locking edge 45 snaps into the notch to realize the positioning of the push button assembly. Conversely, when the push button is pushed forward from the notch as the second positioning portion, the action of the push button assembly is the same as that of pulling the touch button backward from the notch as the first positioning portion, and details are not repeated here. Further (especially for the latter technical means of realizing the positioning of the push button assembly at the first positioning part, since the touch button needs to be pressed during operation), a bearing part for carrying the push rod is provided in the handle along the extending direction of the slideway, In order to support the push rod when the touch button is pressed; the reason why the bearing part is arranged along the extension direction of the slideway is that the push rod can move smoothly back and forth along the bearing part; when the bearing part is actually installed, the handle can correspond to the push rod The lower part of the handle 3 is provided with a grooved slideway 16 or steps 17 are provided on both sides of the corresponding extension part 32 of the handle. In this preferred embodiment, the grooved slideway 16 and the steps 17 are provided at the same time.

In order to realize the rear positioning of the push button assembly 4 on the slideway 14 , a second positioning part 14b for positioning the push button assembly is provided at the rear of the slideway 14 . Specifically, the structure of the second positioning part 14b can be the same as that of the first positioning part 14a (see FIG. 25); rear side. In addition, since the push button assembly does not need to bear the thrust in the front and rear directions (such as the thrust required when screwing the screw) when it is positioned at the second positioning part, the structure of the second positioning part can be elastically matched with the push button assembly A structure or a magnetic adsorption structure is used to keep the push button assembly at the second positioning part.

In order to realize the rotation of the bit holder 2 on the handle 1 and to facilitate installation and removal, see Fig. 7-15, Fig. 28, 29, the front wall of the installation position 13, the front end of the bit holder 2 and the rear wall of the installation position 13 The rear end of the bit holder 2 is respectively provided with a pit 18 and a telescopic shaft head 24, and the elastic element is supported at the rear end of the telescopic shaft head 24, and the telescopic shaft head is located in the corresponding pit to realize the installation of the bit holder 2 at the installation position 13 And can rotate. As shown in the figure, the telescopic shaft head 24 is installed on the bit holder 2, and the pit 18 is located on the front wall and the rear wall of the installation position 13. In addition to this situation, the matching telescopic shaft head and the pit can be replaced according to the needs. .

In order to realize the positioning of the bit holder 2 on the handle 1 so that the push rod 3 can accurately correspond to the receiving hole 22 on the bit holder 2, see Fig. 7-15 and Fig. 29, the front wall or/and rear wall of the installation position 13 and The front end or/and the rear end of the bit holder 2 are divided into a positioning pin 19 and a positioning groove 25, and the elastic element is supported at the rear end of the positioning pin 19, and the positioning pin 19 is located in the positioning groove to realize the positioning of the bit frame on the handle. As shown in the figure, the positioning pin 19 is located on the front wall of the installation position 13, and the positioning groove 25 is located on the front edge of the bit holder 2. In addition to this situation, the positioning structure can be arranged on the rear wall of the installation position and the bit The rear end edge of the frame or the rear end are arranged at the same time, and when the structure permits, the positions of the positioning pins and the positioning grooves can also be replaced.

In order to prevent the bit 21 in the receiving hole 22 from falling off, the inner wall of the receiving hole 22 has an elastic structure 26, as shown in the figure, it is a shrapnel made on the inner wall of the receiving hole 22 (see Fig. 8-9, Fig. 14).

In order to facilitate the recognition of the form of the bit in the receiving hole, the position corresponding to each receiving hole on the bit holder 2 has a bit mark 27 (see Fig. 7, Fig. 12); The head holder can recognize the shape of the bit.

In order to spare more bit bits, the handle 1 is provided with a storage portion 110 for storing spare bit racks (see FIGS. 30-31 ), or a bit storage rack 5 is installed on the handle 1 .

In order to facilitate holding and exerting a pushing force on the push rod, the handle 1 has a grip part 111 (see Fig. 1, Fig. 30, Fig. 31) extending to one side of the push rod 3, as shown in the figure, the grip part is arranged so that The whole screwdriver is more like a pistol in shape.

As a preferred technical means for the front end of the push rod to cooperate with the bit, the front end of the push rod 3 or/and the bit 21 are provided with a combination structure for the combination of the two. 14 is located at the rear side of the bit holder 2 and relies on the combination structure to bring the corresponding bit back to the corresponding accommodating hole. In view of this combination structure, when the push rod 3 pushes the bit into the bit sleeve 11, the combination structure can be relied on to prevent the bit from falling off from the bit sleeve 11; the process of pulling back the push rod can also rely on this combination structure Bring the corresponding bit back to the corresponding receiving hole by the push rod. Specifically, the combination structure can be given to the front end of the push rod or/and the magnetic bit for the two to absorb. Generally, since the bit is mostly a standard part and non-magnetic, the front end of the push rod is made magnetic ( For example, a permanent magnet is placed therein) to realize the magnetic combination with the bit; the combination structure can also be a tenon and a mortise which are respectively arranged at the front end of the push rod and the rear end of the bit (such as at the rear end of the bit and the front end of the push rod respectively A combined tenon 40 and tenon groove 144 as described in US6138537 patent is provided).

As an optimal technical means to prevent the bits from interfering with the rotation of the bit frame, the rear end of the accommodation hole has a stopper 23, and when the bit is pulled back to the accommodation hole by any of the above-mentioned combination structures, the bit is then blocked by the stopper at the rear end of the accommodation hole 23 (such as a step) prevents the front end of the push rod 3 from being separated from and stays in the receiving hole, so as to avoid exposure and interfere with the rotation of the bit holder; or keep a gap between the rear end of the bit holder and the rear wall of the installation position, and the push rod The front end corresponds to the gap when the push button assembly is located at the rear of the slideway. This situation is especially suitable for the magnetic combination structure. out of the receiving hole, the bit can be separated from the push rod by rotating the bit holder, and the bit is retained in the receiving hole. Further, in order to prevent the bit from being exposed from the receiving hole, in this case, the The inner wall of 22 is configured with the aforementioned elastic structure 26 at the same time.

Claims (26)

1. screwdriver is characterized in that comprising:

Handle (1), its front end is established screwdriver bit sleeve (11), the seam (12) that extends before and after the position that is positioned at described screwdriver bit sleeve (11) rear on handle (1) is offered and from the visual installation position (13) of described seam (12), establish slideway (14) at the edge of described seam (12), the front portion on described slideway (14) is provided with one first location division (14a);

Runner shape screwdriver bit frame (2), its axial (n-n) fore-and-aft direction of handle relatively is installed in rotation on described installation position (13), be distributed with the axial accommodation hole that accommodates screwdriver bit (21) (22) on it, and described accommodation hole (22) can go to axially corresponding with described screwdriver bit sleeve (11);

Push rod (3), it is placed in the described handle (1) and axial corresponding described screwdriver bit sleeve (11) along fore-and-aft direction;

Push button assembly (4), itself and described push rod (3) assembling also are engaged on the described slideway (14) slidably and can be positioned described first location division (14a);

Described push rod (3) stretches into described screwdriver bit frame (2) when described push button assembly (4) is positioned described first location division (14a) a accommodation hole is pushed the screwdriver bit in this accommodation hole to described screwdriver bit sleeve (11) to this screwdriver bit and is stretched out the screwdriver bit sleeve, and described push rod (3) is positioned at the rear side of described screwdriver bit frame (2) when described push button assembly (4) is positioned at rear portion on the described slideway (14).

2. screwdriver according to claim 1, it is characterized in that: the front end of described handle (1) is provided with ratchet structure (15), described screwdriver bit sleeve (11) is located on the described ratchet structure (15), is offering the through hole (15a) that is communicated with the accommodation hole on described screwdriver bit sleeve (11) and the described screwdriver bit frame (2) on the described ratchet structure (15).

3. screwdriver according to claim 2 is characterized in that: described ratchet structure (15) comprises pawl base (15b), ratchet sleeve (15c) and pivoted housing (15d):

Described pawl base (15b) is fixed in the front end of described handle (1), the dialing part (15f) of establishing two reverse ratchets of swinging (15e) on this pawl base (15b) and being used to control these two detent positions states has two shifting blocks (15g) of described two ratchets of correspondence (15e) respectively on the described dialing part (15f);

Described ratchet sleeve (15c) is enclosed within and is used on the described pawl base (15b) meshing with described ratchet (15e);

Described pivoted housing (15d) is enclosed within the outside of described pawl base (15b) and is connected with described dialing part (15f);

Described screwdriver bit sleeve (11) is located on the described ratchet sleeve (15c), and described through hole (15a) is opened on the described pawl base (15b).

4. screwdriver according to claim 3, it is characterized in that: the inwall of described pivoted housing (15d) has three locating slots (15h), described pawl base (15b) is provided with location pellet shot from a slingshot (15i), and this location pellet shot from a slingshot (15i) is supported by flexible member and is positioned at a described locating slot.

5. screwdriver according to claim 3 is characterized in that: be supported with between described two ratchets (15e) and make these two ratchets open the flexible member that relies on described ratchet sleeve (15c).

6. screwdriver according to claim 1 is characterized in that: the front end of described handle (1) is provided with structural member, and described screwdriver bit sleeve is located on the described structural member.

7. screwdriver according to claim 1 is characterized in that: described slideway (14) is a metalwork.

8. screwdriver according to claim 1 is characterized in that: described first location division (14a) is for being arranged on the breach on the described slideway (14).

9. screwdriver according to claim 8, it is characterized in that: the afterbody of described push rod (3) extends base portion (31) to the direction of described slideway (14), described push button assembly (4) comprises locking plate (41), touching button (42) and flexible member, the direction that described locking plate (41) extends along described base portion (31) is placed in described base portion (31) versatilely and can snaps in described breach and deviate from from described breach in its scope of activities, described flexible member places between described locking plate (41) and the base portion (31) and with elastic force described locking plate (41) is suppressed in described breach, and described touching button (42) is assemblied in the touch part (43) that described base portion (31) is gone up and setting forces described locking plate (41) activity slidingly back and forth thereon.

10. screwdriver according to claim 8, it is characterized in that: the afterbody of described push rod (3) extends base portion (32) to the direction of described slideway (14), described push button assembly (4) comprises touching button (44) and flexible member, locking edge (45) is set on the described touching button (44), the direction that described touching button (44) extends along described base portion (32) is placed in described base portion (32) and described locking edge (45) versatilely and can snaps in described breach and deviate from from described breach in the scope of activities of described touching button (44), and described flexible member places between described touching button (44) and the base portion (32) and with elastic force described locking edge (45) suppressed in described breach.

11., it is characterized in that: the supporting part that is provided with the described push rod of carrying (3) in the described handle (1) along the bearing of trend of described slideway (14) according to claim 9 or 10 described screwdrivers.

12. according to claim 1 or 8 or 9 or 10 or 11 described screwdrivers, it is characterized in that: the rear portion on described slideway (14) is provided with second location division (14b) to described push button assembly (4) location.

13. screwdriver according to claim 12 is characterized in that: the structure of this second location division (14b) is identical with the structure of described first location division (14a); Described push rod (3) is positioned at the rear side of described screwdriver bit frame (2) when described push button assembly (4) is positioned this second location division (14b).

14. screwdriver according to claim 1, it is characterized in that: the rear end of the front end of the antetheca of described installation position (13) and described screwdriver bit frame (2) and the rear wall of described installation position (13) and described screwdriver bit frame (2) is provided with pit (18) and flexible spindle nose (24) respectively, at the rear end of described flexible spindle nose (24) support elastic element, described flexible spindle nose (24) is positioned at corresponding pit and realizes the installation of described screwdriver bit frame (2) in described installation position (13).

15. according to claim 1 or 14 described screwdrivers, it is characterized in that: the antetheca of described installation position (13) is or/and the front end of rear wall and described screwdriver bit frame (2) is located pellet shot from a slingshot (19) and locating slot (25) or/and set up separately the rear end, at the rear end of described location pellet shot from a slingshot (19) support elastic element, described location pellet shot from a slingshot (19) is positioned at described locating slot (25) and realizes the location of described screwdriver bit frame (2) on described handle (1).

16. screwdriver according to claim 1 is characterized in that: the inwall of described accommodation hole (22) has elastic construction (26).

17. screwdriver according to claim 1 is characterized in that: the position that described screwdriver bit frame (2) is gone up corresponding each accommodation hole has screwdriver bit mark (27).

18. according to claim 1 or 17 described screwdrivers, it is characterized in that: described screwdriver bit frame (2) is transparent.

19. screwdriver according to claim 1 is characterized in that: described handle (1) is provided with the accommodation section (110) that is used to deposit standby screwdriver bit frame (5).

20. screwdriver according to claim 1 is characterized in that: described handle (1) is provided with standby screwdriver bit storage rack (6).

21. screwdriver according to claim 1 is characterized in that: described handle (1) has the grip part (111) of extending to a side of described push rod.

22. screwdriver according to claim 1, it is characterized in that: the front end of described push rod (3) is or/and described screwdriver bit is provided with for the two integrated structure that combines, and described push rod (3) is positioned at the rear side of described screwdriver bit frame (2) and relies on described integrated structure that the screwdriver bit of correspondence is taken back corresponding accommodation hole when described push button assembly (4) is positioned at rear portion on the described slideway (14).

23. screwdriver according to claim 22 is characterized in that: described integrated structure is for to give the front end of described push rod (3) or/and the magnetic of the two absorption of confession of described screwdriver bit.

24. screwdriver according to claim 22 is characterized in that: described integrated structure is for being divided into the front end of described push rod (3) and the tenon and the tongue-and-groove of described screwdriver bit rear end.

25. according to each described screwdriver among claim 1, the 22-24, it is characterized in that: the rear end of described accommodation hole (22) has blocking portion (23).

26. according to each described screwdriver among claim 1, the 22-23, it is characterized in that: have the slit between the rear wall of the rear end of described screwdriver bit frame (2) and described installation position (13), the front end of described push rod (3) is corresponding described slit when described push button assembly (4) is positioned at rear portion on the described slideway (14).

Images