CN209793639U

CN209793639U - Hammer drill locking structure

Info

Publication number: CN209793639U
Application number: CN201920565068.2U
Authority: CN
Inventors: 宋作为; 张春; 任涵
Original assignee: WUXI HARIKEN ELECTRIC TOOLS CO Ltd
Current assignee: WUXI HARIKEN ELECTRIC TOOLS CO Ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2019-12-17
Anticipated expiration: 2029-04-23

Abstract

The utility model relates to a hammer drill locking structure, including drive shaft and hammer drill axle, set up the chuck in the drive shaft, the complex still the cover is established the driving gear that has the cassette in the drive shaft, the epaxial driven gear meshing of driving gear and hammer drill, cassette one side is connected and is removed the support, removes and still connects the locking pinion plate on the support, and the locking pinion plate can fix a position driven gear with driven gear meshing, remove leg joint drive arrangement, hammer drill locking structure inhales the location driven gear through the locking pinion plate card, prevents that the hammer drill from rotating at the cutter under the single hammer function.

Description

Hammer drill locking structure

Technical Field

The utility model relates to a hammer drill especially relates to a hammer drill locking structure.

Background

The hammer drill can drive a cutter to rotate and can drive the cutter to swing and hammer, the hammer drill can carry out hammer drill, operations such as single hammer and single drill are carried out, when the single hammer function is carried out, the clamping seat and the driving gear are driven through the moving frame, the clamping seat is separated from the chuck of the driving shaft, therefore, the driving gear cannot be driven to rotate by the rotation of the driving shaft, the driven gear and the hammer drill shaft cannot be driven to rotate, the cutter cannot rotate, in the practical operation, because friction exists between the clamping seat, the driving gear and the driving shaft, when the driving shaft rotates, the clamping seat and the driving gear can still be driven to slowly rotate, and the cutter can still rotate under the single hammer function.

SUMMERY OF THE UTILITY MODEL

The applicant has made research and improvement aiming at the above disadvantages and provides a hammer drill stopping structure.

The utility model discloses the technical scheme who adopts as follows:

The utility model provides a hammer drill locking structure, includes drive shaft and hammer drill axle, set up the chuck in the drive shaft, the cooperation still overlap in the drive shaft and establish the driving gear that has the cassette, the epaxial driven gear meshing of driving gear and hammer drill, cassette one side connection moving bracket still connects the locking pinion rack on the moving bracket, and the locking pinion rack can fix a position driven gear with driven gear meshing, moving bracket connection drive arrangement.

As a further improvement of the above technical solution:

The movable support is a C-shaped support, one end of the C-shaped support is inserted into an outer clamping groove of the clamping seat, the C-shaped support is connected with a first guide rod, the stopping toothed plate is sleeved on the first guide rod, and the first guide rod is sleeved with a buffer spring at a position between the stopping toothed plate and the C-shaped support.

The C-shaped support penetrates through the second guide rod, a driving knob is arranged on one side of the C-shaped support, a return spring is arranged on the other side of the movable support, and the return spring is also sleeved on the second guide rod.

The utility model has the advantages as follows: the hammer drill locking structure is clamped by the locking tooth plate to position the driven gear, so that the hammer drill is prevented from rotating under the single hammer function, the locking tooth plate is provided with the buffer spring, the locking tooth plate is prevented from being in hard collision with the driven gear, and the effect of protecting the locking tooth plate and the driven gear is achieved.

Drawings

fig. 1 is a front view of a locking structure of a hammer drill according to the present invention.

Fig. 2 is a schematic structural view of the C-shaped bracket of the stop structure of the hammer drill according to the present invention.

Fig. 3 is a top view of the C-shaped bracket of the stop structure of the hammer drill according to the present invention.

In the figure: 1. a drive shaft; 11. a chuck; 2. a hammer drill shaft; 3. a driving gear; 31. a card holder; 311. an outer clamping groove; 4. a driven gear; 5. a stop toothed plate; 6. a second guide bar; 7. a C-shaped bracket; 71. a first guide bar; 72. a buffer spring; 8. a drive knob; 81. a return spring.

Detailed Description

The following describes a specific embodiment of the present embodiment with reference to the drawings.

As shown in fig. 1 to 3, the hammer drill locking structure of the present embodiment includes a driving shaft 1 and a hammer drill shaft 2, a chuck 11 is disposed on the driving shaft 1, a driving gear 3 having a clamping seat 31 is further sleeved on the driving shaft 1, the driving gear 3 is engaged with a driven gear 4 on the hammer drill shaft 2, an outer clamping groove 311 is disposed on an outer side of the clamping seat 31, the clamping seat 31 is clamped to a C-shaped support 7 through the outer clamping groove 311, the C-shaped support 7 penetrates through a second guide rod 6, a driving knob 8 is disposed on one side of the C-shaped support 7, a return spring 81 is disposed on the other side of the moving support, the return spring 81 is also sleeved on the second guide rod 6, the C-shaped support 7 is further connected with a first guide rod 71, the locking toothed plate 5 is sleeved on the first guide rod 71, a buffer spring 72 is sleeved on a position of the first guide rod 71 between the locking toothed plate 5 and the C-shaped support 7, and the locking toothed plate 5 can be.

When the hammer drill stopping structure of the embodiment is used, when a single hammer operation is performed, the C-shaped support 7 can be driven to move by the driving knob 8, the C-shaped support 7 can drive the clamping seat 31 and the driving gear 3 to move, so that the clamping seat 31 is separated from the chuck 11 of the driving shaft 1, meanwhile, the C-shaped support 7 drives the stopping toothed plate 5 thereon to move, if the teeth of the stopping toothed plate 5 and the tooth grooves of the driven gear 4 are positioned on a straight line, the stopping toothed plate 5 is directly meshed with the driven gear 4, the driven gear 4 is positioned by the stopping toothed plate 5, the hammer drill shaft 2 is prevented from rotating, if the teeth of the stopping toothed plate 5 and the tooth grooves of the driven gear 4 are not on a straight line, the stopping toothed plate 5 firstly abuts against one side of the driven gear 4, due to the friction force existing between the driving shaft 1 and the clamping seat 31 and the driving gear 3, the driving shaft 1 can drive the clamping seat 31 and the driving gear 3 to slightly rotate, and the driving gear, because the buffer spring 72 is arranged on one side of the stop toothed plate 5, when the driven gear 4 rotates to the position of the tooth groove and the teeth of the stop toothed plate 5 on a straight line, the stop toothed plate 5 can be inserted into the driven gear 4 under the action of the buffer spring 72, the driven gear 4 can be positioned through the stop toothed plate 5, and the hammer drill shaft 2 is prevented from rotating.

the above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made without departing from the basic structure of the invention.

Claims

1. A hammer drill stopping structure is characterized in that: including drive shaft (1) and hammer drill axle (2), set up chuck (11), the complex still the cover is established driving gear (3) that have cassette (31) on drive shaft (1), driven gear (4) meshing on driving gear (3) and the hammer drill axle (2), cassette (31) one side connection removal support moves movable support, moves and still connects on the support and stops pinion rack (5), and stop pinion rack (5) can be with driven gear (4) meshing location driven gear (4), move movable support connection drive arrangement.

2. The hammer drill stopping structure according to claim 1, wherein: the movable support is a C-shaped support (7), one end of the C-shaped support (7) is inserted into an outer clamping groove (311) of the clamping seat (31), the C-shaped support (7) is connected with a first guide rod (71), the stopping toothed plate (5) is sleeved on the first guide rod (71), and the first guide rod (71) is positioned between the stopping toothed plate (5) and the C-shaped support (7) and sleeved with a buffer spring (72).

3. The hammer drill stopping structure according to claim 2, wherein: the C-shaped support (7) penetrates through the second guide rod (6), a driving knob (8) is arranged on one side of the C-shaped support (7), a return spring (81) is arranged on the other side of the movable support, and the return spring (81) is also sleeved on the second guide rod (6).