TWI729772B - Ratchet driven screwdriver with bits storage - Google Patents

Abstract

A ratchet drive screwdriver with bits storage has a body. A ratchet driving device is disposed in the steering wheel housing. The ratchet driving device has a ratchet, a lever, a ratchet housing, a ratchet spring, two L-shaped ratchets, a steel ball and a compression spring. A bits storage is disposed in the hollow handle, and the bits storage has a spring seat, two torsion springs, a storage tube, an axis column, and a bits box. When replacing the bits, pull the back cover to drive the storage tube. Currently, the pressure of the torsion spring will extend to the tapered end of the axis column to release the vertical force, and the back cover is pulled apart. The torsion spring extends to the other end of the axis column, and the vertical force will make the bits box pushed to the open state and locked. With turning the back cover, an appropriate bit can be selected.

Description

Ratchet drive screwdriver with screwdriver head box

The invention relates to a screwdriver, in particular to a ratchet-driven screwdriver with a driver head box.

The general ratchet-driven screwdriver does not use an integrated ratchet housing and ratchet group design. Therefore, it cannot provide a large screwdriver torque when rotating, reversing, or locking. If the screwdriver box is added to store different types and sizes of screwdriver heads, the mechanism of the ratchet drive screwdriver will be more complicated.

Therefore, the ratchet-driven screwdriver with modular design and easy disassembly design can facilitate assembly and replacement of modules for maintenance, and can also reduce the risk of assembly.

The object of the present invention is to provide a ratchet drive screwdriver with a driver head box. Selectively enable clockwise or counterclockwise ratchet operation, or lock the ratchet.

In order to achieve the above-mentioned object, the present invention provides a ratchet-driven screwdriver with a screwdriver head box, which has a screwdriver body, a ratchet drive device and a bit holder. The screwdriver body has a center rod, a steering wheel shell, a hollow handle and a back cover. The ratchet drive device is arranged in the steering wheel housing. The ratchet drive device has a ratchet, a shift lever, a ratchet housing, a pawl spring, two L-shaped pawls, a steel ball and a compression spring. The screwdriver head storage device is arranged in the hollow handle, and the screwdriver head storage device has a spring seat, two torsion springs, a storage tube, a shaft column, and a head box. When the screwdriver bit is to be replaced, pull the back cover to drive the storage tube. At this time, the pressure of the torsion spring will extend along the tapered end of the shaft column to release the vertical force. The back cover is pulled open and the twisting The spring runs along the other end of the shaft column, and the vertical force will push the screwdriver box to the open state and lock it, so that the back cover can be turned and the appropriate screwdriver head can be selected.

Compared with the conventional ratchet-driven screwdriver with a driver head box, the present invention has the following advantages: 1. The present invention uses modular design, which can be assembled into semi-finished modules first, and then related modules can be placed in accordance with shipment requirements. Each module of the present invention has a replaceable module for maintenance. 2. The invention uses an easy-to-disassemble design, easy assembly can reduce the risk of assembly press-fitting, and the design of the ratchet drive device can effectively increase the torque by 15-20%.

The ratchet-driven screwdriver with the driver head box of the present invention can selectively enable clockwise or counterclockwise ratchet operation, or lock the ratchet.

Figure 1 is a perspective exploded view of the ratchet drive screwdriver with a driver box of the present invention, and Figure 2 is a perspective view of the ratchet drive screwdriver with a driver box of the present invention, as shown in Figures 1 and 2 As shown, a ratchet-driven screwdriver 100 with a bit box has a screwdriver body 110, a ratchet drive device 120, and a bit holder 130.

The screwdriver body 110 has a first screwdriver head 40, a center rod 2, a steering wheel shell 3, a hollow handle 20 and a rear cover 19. Both ends of the first screwdriver 40 have a word and a cross screwdriver respectively.

The ratchet drive device 120 is arranged in the steering wheel housing 3. The ratchet drive device 120 has a bushing 4, a ratchet 5, a shift lever 6, a ratchet housing 7, a pawl spring 8, and two L-shaped pawls 9 and 10, a steel ball 11 and a compression spring 12.

The screwdriver head storage 130 is arranged in the hollow handle 20. The screwdriver head storage 130 has a spring seat 16, two torsion springs 14 and 15, a storage tube 17, an axial column 13, a subhead box 18, a The second screwdriver head 42, a third screwdriver head 43, and a fourth screwdriver head 44. Two ends of the second screwdriver head 42, the third screwdriver head 43, and the fourth screwdriver head 44 respectively have a word and a cross screwdriver head. The above-mentioned second screwdriver head 42, the third screwdriver head 43, and the fourth screwdriver head 44 are just examples. The shape of the screwdriver head can be triangular, hexagonal, star-shaped and other shapes. There is no limit to the number of spare screwdrivers. The form of the spare screwdriver head is not limited to the shape of both ends, most of which are single heads, depending on the design of the screwdriver box and the screwdriver head of the center rod device.

When the steering wheel housing 3 is rotated in a clockwise or counterclockwise direction, the positioning groove 32 of the steering wheel housing 3 will drive the shift lever 6, and the shift lever 6 will also drive the L-shaped pawl 9 to overcome the ratchet The elastic force of the pawl spring 8 pushes one side of the L-shaped pawl 9 away from the ratchet 5, so that the bidirectional locking of the ratchet 5 can be released, so that the ratchet 5 rotates clockwise or counterclockwise.

When the steering wheel housing 3 is not rotated, the ratchet wheel 5 is locked. Since the ratchet wheel housing 7 is an integrated design, it can provide a larger torque of the screwdriver. The screwdriver of the present invention adopts the design of an integrated ratchet wheel housing and a ratchet wheel group, which can provide a larger torque of the screwdriver when rotating forward, backward or locked. In addition, the steering wheel housing 3 is positioned by the positioning groove 32 of the steering wheel housing 3 in cooperation with the steel ball 11 and the compression spring 12.

When the screwdriver bit is to be replaced, the rear cover 19 is pulled to drive the storage tube 17. At this time, the pressure of the torsion springs 14 and 15 will extend along the tapered end 34 of the shaft 13 to release the vertical force. The rear cover 19 Pulling apart, the torsion springs 14 and 15 extend along the other end 36 of the shaft 13 and the vertical force causes the screwdriver box 18 to be pushed to the open state and locked, so that the back cover 19 can be rotated to select an appropriate screwdriver.

When the screwdriver head box 18 is inside the hollow handle 20, the two torsion springs 14 and 15 of the spring seat 16 are twisted. One end of the two torsion springs 14 and 15 is restricted to the groove 38 of the storage tube 17 and exerts pressure on the shaft center. The tapered end 34 of the column 13 prevents the screwdriver box 18 from being detached, and the back cover 19 can still be rotated in use.

Fig. 3 is a perspective view of the combination of the bit holder of the ratchet-driven screwdriver with the bit box of the present invention when the bit holder is closed. As shown in FIG. 3, the bit holder 130 is housed in the hollow handle 20.

Figures 4A-4D are longitudinal cross-sectional views of a ratchet-driven screwdriver with a driver head box according to the present invention. Figure 4A is the longitudinal cross-sectional position of A-A, D-D, and G-G of the ratchet drive screwdriver with the driver head box of the present invention. Figure 4B is the A-A cross-sectional view of the ratchet drive screwdriver with the driver head box of the present invention. Figure 4C is a D-D cross-sectional view of the ratchet drive screwdriver with the driver head box of the present invention. Figure 4D is a G-G cross-sectional view of the ratchet drive screwdriver with the driver head box of the present invention.

Figures 5A-5H are transverse cross-sectional views of the ratchet drive screwdriver with the driver head box of the present invention. Figure 5A is the transverse cross-sectional position of BB, CC, EE, and FF of the ratchet drive screwdriver with a driver head box according to the present invention. BB is the cross-sectional position of the L-shaped pawl 9, CC is the cross-sectional position of the steel ball 11, and EE It is the cross-sectional position of the shift lever 6. Figure 5B is a cross-sectional view of BB when the ratchet wheel of the ratchet-driven screwdriver with a driver head box is locked, and Figure 5B is the cross-sectional position of the L-shaped pawl 9 when the steering wheel housing 3 is not rotating but the ratchet wheel 5 is locked . Figure 5C is a B-B cross-sectional view of the ratchet drive screwdriver with a driver head box according to the present invention, and Figure 5C is the cross-sectional position of the L-shaped pawl 9 when the steering wheel housing 3 rotates. Figure 5D is a C-C cross-sectional view of the ratchet-driven screwdriver with a head box of the present invention when the ratchet wheel is locked. Figure 5D is the cross-sectional position of the steel ball 11 when the steering wheel housing 3 is not rotating and the ratchet wheel 5 is locked. Figure 5E is a C-C cross-sectional view of the ratchet drive screwdriver with a driver head box of the present invention, and Figure 5E is the cross-sectional position of the steel ball 11 when the steering wheel housing 3 is rotated. Figure 5F is an E-E cross-sectional view of the ratchet-driven screwdriver with a bit box of the present invention when the ratchet wheel is locked. Figure 5F is the cross-sectional position of the shift lever 6 when the steering wheel housing 3 does not rotate and the ratchet wheel 5 is locked. Figure 5G is an E-E cross-sectional view of the ratchet drive screwdriver with the driver head box of the present invention, and Figure 5G is the cross-sectional position of the shift lever 6 when the steering wheel housing 3 is rotated. Fig. 5H is an F-F cross-sectional view of the ratchet drive screwdriver with a driver head box according to the present invention, and Fig. 5H is the cross-sectional position of the torsion springs 14 and 15.

Use a gap repository to store multiple screwdrivers. The screwdriver head box is enclosed inside the hollow handle of the screwdriver. When the back cover of the handle is pulled, the screwdriver head box is drawn out along the screwdriver shaft. The screwdriver head is stored in the storage and located on the circumference of the storage tube reciprocating relative to the screwdriver. When the screwdriver box is completely removed, the screwdriver heads can be easily viewed, and they can be removed or replaced separately from the screwdriver box with a simple radial force.

100: Ratchet drive screwdriver with driver head box 110: Screwdriver body 120: Ratchet drive 130: Screwdriver head storage 40: First screwdriver head 2: Center pole 3: steering wheel housing 4: bushing 20: Hollow handle 19: back cover 5: Ratchet 6: lever 7: Ratchet shell 8: detent spring 9, 10: L-shaped pawl 11: steel ball 12: Compression spring 16: spring seat 14, 15: torsion spring 17: Storage tube 13: Axial column 18: Screwdriver head box 42: second screwdriver head 43: The third screwdriver head 44: The fourth screwdriver head 32: positioning groove 34: tapered end 36: The other end of the shaft 38: Groove

Figure 1 is an exploded perspective view of a ratchet-driven screwdriver with a driver head box according to the present invention. Figure 2 is a perspective view of the ratchet-driven screwdriver with a driver head box according to the present invention. Fig. 3 is a perspective view of the combination of the bit holder of the ratchet-driven screwdriver with the bit box of the present invention when the bit holder is closed. Figures 4A-4D are longitudinal cross-sectional views of a ratchet-driven screwdriver with a driver head box according to the present invention. Figures 5A-5H are transverse cross-sectional views of the ratchet drive screwdriver with the driver head box of the present invention.

100: Ratchet drive screwdriver with driver head box

110: Screwdriver body

120: Ratchet drive

130: Screwdriver head storage

40: First screwdriver head

2: Center pole

3: steering wheel housing

4: bushing

20: Hollow handle

19: back cover

5: Ratchet

6: lever

7: Ratchet shell

8: detent spring

9, 10: L-shaped pawl

11: steel ball

12: Compression spring

16: spring seat

14, 15: torsion spring

17: Storage tube

13: Axial column

18: Screwdriver head box

42: second screwdriver head

43: The third screwdriver head

44: The fourth screwdriver head

32: positioning groove

34: tapered end

36: The other end of the shaft

38: Groove

Claims (3)

A ratchet-driven screwdriver with a screwdriver head box, comprising: a screwdriver body with a first screwdriver head, a center rod, a steering wheel shell, a hollow handle and a back cover; a ratchet drive device arranged in the Inside the steering wheel housing, the ratchet drive device has a ratchet, a shift lever, a ratchet housing, a pawl spring, two L-shaped pawls, a steel ball and a compression spring; In the hollow handle, the driver bit storage has a spring seat, two torsion springs, a storage tube, a shaft column, a sub-head box and a second bit; wherein, when the first bit is to be replaced with the When the second screwdriver bit, pull the back cover to drive the storage tube. At this time, the pressure of the two torsion springs will extend along the tapered end of the shaft, releasing the vertical force, the back cover is pulled apart, and the two torsion springs Along the other end of the shaft, the vertical force will push the screwdriver box to the open state and lock it, so that the back cover can be rotated to select the second screwdriver. The ratchet-driven screwdriver with a driver head box according to claim 1, wherein when the steering wheel housing is rotated in a clockwise or counterclockwise direction, the positioning groove of the steering wheel housing will drive the shift lever, the The shift lever also drives the two L-shaped pawls to overcome the elastic force of the pawl spring, and pull one side of the two L-shaped pawls away from the ratchet, so that the two-way locking of the ratchet can be released, making the ratchet clockwise or Turn counterclockwise. The ratchet-driven screwdriver with a driver box according to claim 1, wherein when the driver box is inside the hollow handle, the two torsion springs of the spring seat are twisted, and one end of the two torsion springs is limited to The groove of the storage tube applies pressure to the tapered end of the shaft column, so that the screwdriver box cannot be detached, and the back cover can still be rotated in use.

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