TWM517080U - Power tool beating set - Google Patents

Description

Power tool hammering group

This creative department is related to the hammering group, especially for a power tool hammering group.

Most of the conventional rotary impact tools use a pneumatic motor to drive the hammer to rotate. The hammering group has a mechanism for generating impact and impact forces, such as hammering blocks and impact frames, and thus can be outputted from the front end of the hammering group. The rotational power of the impact effect, such as those described in the patents of TWM379496, TWM399005, etc., is such a tool.

In such a conventional tool, the hammering group is inserted into the two sides of the hammering block with two pins, so that the hammering block can only swing around the pin while limiting the swinging range of the hammering block, Control the action of the hammer block and obtain the effect of using the hammer block to hit the mandrel to generate impact force. However, when the hammering group rotates the hammer block while hitting the mandrel, great rotation and turbulence of inertia are generated, and the hammer block will gravity hit the inner wall of the hammering chamber, which will cause great vibration of the overall tool. Therefore, the rotation is not stable, is not conducive to precise operation, and is not conducive to long-term operation, and will reduce the impact torque of the pneumatic tool, the transmission efficiency and the service life of the hammering group.

Therefore, it is necessary to provide a novel and progressive power tool hammering set to solve the above problems.

The main purpose of this creation is to provide a power tool hammering group, which can greatly reduce the imbalance caused by impact and turbulence, thereby achieving excellent dynamic balance, stable rotation, convenient operation and long-time operation. And other effects.

In order to achieve the above object, the present invention provides a power tool hammering set, comprising: a body defining an axial direction and a radial direction, a radial span opening and forming a saddle portion on opposite sides of the span along the axial direction A plurality of connecting ends for connecting to a power source of a power tool and a through hole communicating with the power source are respectively disposed on the two saddle portions along the axial direction; a mandrel axially penetrating the through hole through the through hole And rotatably assembled to the body; a hammering block slidably coupled to the body in a laterally movable manner and slidably circumferentially disposed on the cross-slot and swingably spanned on the mandrel; When the body is rotated by the power source, the hammer block is interlocked with the body and intermittently drives the spindle.

1‧‧‧Power tool hammering group

10‧‧‧ Ontology

11‧‧‧Axial

12‧‧‧ Radial

13‧‧‧cross-slot

131‧‧‧ bottom

132‧‧‧ curved surface

133‧‧‧Sliding face

134‧‧‧ yaw

14‧‧‧ saddle

141‧‧ ‧ chute

15‧‧‧Groups

16‧‧‧through holes

17‧‧‧First outer curved surface

20‧‧‧ mandrel

21‧‧‧Beat block

30‧‧‧ hammering block

31‧‧‧ 容孔

32‧‧‧Second outer curved surface

33‧‧‧Body section

34‧‧‧End arc

35‧‧‧impact block

40‧‧‧ Pins

41‧‧‧ Department of Sales

50‧‧‧shell

60‧‧‧Sliding mechanism

61‧‧‧ Groove

62‧‧‧Rolling parts

1 is a perspective view of a preferred embodiment of the present invention.

2 is an exploded view of a preferred embodiment of the present invention.

Figure 3 is a cross-sectional view of a preferred embodiment of the present invention.

4 to 7 are schematic views of the operation of a preferred embodiment of the present invention.

The structural features of the present invention and the intended effects thereof will be described below by way of a preferred embodiment, but are not intended to limit the scope of the present invention.

Referring to FIGS. 1 through 4, a preferred embodiment of the present invention is shown. The power tool hammer set 1 of the present invention includes a body 10, a mandrel 20 and a hammer block 30.

The body 10 defines an axial direction 11 and a radial direction 12, and the body 10 defines a spanning groove 13 in the radial direction and a second saddle portion 14 along the axial direction 11 on opposite sides of the spanning groove 13 along the axial direction 11 The two saddle portions 14 are respectively provided with a connecting end 15 (for example, a keyway) for connecting with a power source of a power tool (such as a pneumatic or electric tool) and a through hole 16 communicating with the cross recess 13. The mandrel 20 extends axially through the through hole 16 into the sump 13 and is rotatably assembled to the body 10. The hammer block 30 is slidably coupled to the body 10 in a laterally movable manner. The hammer block 30 is accommodated in the span 13 and swingably spans the mandrel 20. Wherein, when the body 10 is driven to rotate by the power source, the hammer block 30 is interlocked with the body 10 and intermittently drives the spindle 20 . The power tool hammering group 1 can be accommodated in one of the power tools 50. It can be understood that the power tool hammering group can also include a complex array of hammering blocks.

In detail, one end of each of the saddle portions 14 defines a sliding slot 141 in a direction transverse to the axial direction 11. The two sliding slots 141 are axially oppositely disposed, and the hammer block 30 is provided with an insertion opposite to the two sides. In the pin portion 41 of the sliding groove 141, the hammer block 30 can be laterally moved along the sliding groove 141 by the two pin portions 41 and can swing circumferentially around the two pin portions 41. The two chutes can limit the traverse distance of the hammer block 30. In this embodiment, the hammer block 30 is provided with a receiving hole 31 on each of the two sides, and each of the pin portions 41 is inserted into a receiving hole 31. Specifically, the two receiving holes 31 are axially connected. A pin hole penetrating the hammer block 30 is formed, and the two pin ends 41 are disposed at two ends of the pin member 40 and pass through the pin holes. The pin portion may be integrally formed on the hammer block, the spring-pinning mechanism or the like; each of the saddle portions may have a through groove at the end that communicates with the chute, and is coupled to the hammer block. The pin portion can be directly inserted into the sliding slot through the through slot, and the pin portion is limited by the housing of the power tool blocking the through slot. Of course, the chute and the receiving hole are also interchangeably provided to the hammer block and the body.

The span 13 has a bottom portion 131. The bottom portion 131 includes a curved surface 132 having the axial direction 11 as an axis, and a sliding surface 133 (which may be a flat surface or a curved surface) on opposite sides of the curved surface 132. An abutting shoulder 134 is defined between the curved surface 132 and each of the sliding surfaces 133. Each of the abutting shoulders 134 can circumferentially interfere with the hammering block 30. The hammer block 30 is provided with two sliding mechanisms 60 opposite to the two sliding surfaces 133. Each of the sliding mechanisms 60 slides against the sliding surface 133 and can be circumferentially facing the abutting shoulder 134. put one's oar in. Further, the sliding mechanism 60 includes a recess 61 recessed in the hammer block 30 and facing the sliding surface 133, and a rolling element 62 received in the recess 61, the recess 61 and The rolling elements 62 are respectively, for example, an axial long groove and a roller, the two rollers can greatly reduce the friction force, and the hammer block 30 can be restricted by the two rollers colliding with the two abutting shoulders 134. The amplitude of the swing prevents the hammer block 30 from being damaged by the impact on the mandrel 20.

Preferably, the body 10 has a first outer curved surface 17 facing away from the span 13 , and the hammer block 30 has a second outer curved surface 32 facing away from the span 13 , the first and second The outer curved faces 17, 32 are located on the same circumscribed circle. In detail, the first outer curved surface 17 is a poor arc surface, and the second outer curved surface 32 is a superior arc surface. Viewed from the axial direction 11, the saddle portion 14 tapers from the first outer curved surface 17 toward the sliding groove 141. The body 10 has a substantially water droplet shape, and the hammer block 30 has a C shape, and the structure can be increased. The torque of the hammer block 30 can increase the dynamic balance of the power tool hammering group 1 when rotating. Specifically, the hammer block 30 has a plurality of arc segments 33 connected to the body 10 and end arc segments 34 connected to the ends of the arc segments 33. The two end arc segments 34 are located on the spindle 20 On the opposite sides, viewed from the radial direction 12, the end arc segment 34 is narrower than the body arc segment 33. The mandrel 20 is radially convexly provided with a hammer block 21, and each of the end arc segments 34 is provided with a hammer block 35 protruding toward the spindle 20, and the hammer block 21 is located on a swing path of each of the impact blocks 35. The mandrel 20 can be intermittently rotated to output power by intermittently impacting the impact block 35 of the hammer block 30. Wherein the end arc segment 34 is narrower than the The body arc segment 33 can compensate for the weight of the impact block 35 that is convex toward the mandrel 20, thereby improving the dynamic balance of the power tool hammering group 1 when it is rotated.

Referring to FIG. 5 to FIG. 7 again, when the actual operation is performed, the power source rotates the body 10 and interlocks the hammer block 30, and the hammer block 30 is rotated to impact one of the mandrels 20 with the impact block 35. After the impacting block 21 is impacted, the mandrel 20 is rotated by an angle and the hammer block 30 is laterally moved along the two sliding slots 141. The striking block 21 is away from the impact block 35 and continues to rotate. The impact block 35 can continuously impact the striking block 21 again, whereby the mandrel 20 is intermittently rotated to output power. Wherein, the two sliding slots 141 allow the hammer block 30 to move laterally when impacted and do not directly hit the body 10, thereby greatly reducing the imbalance caused by impact and turbulence, thereby achieving excellent Dynamic balance, smooth rotation, conducive to precise operation, long-term operation and other effects.

In addition, the power tool hammering set has a simple structure and is easy to assemble/disassemble. Moreover, preferably, the structure of the hammer block is matched with the structure of the hammer block to further improve the dynamic balance of the power tool hammering group when rotating.

In summary, the overall structural design, practicality and efficiency of this creation are indeed in full compliance with the needs of industrial development, and the disclosed structural creation is also an unprecedented innovative structure, so it has a "novelty" should Undoubtedly, this creation can be more effective than the conventional structure. Therefore, it is also "progressive". It fully complies with the requirements of the application requirements for new patents in the Chinese Patent Law. It is a patent application in accordance with the law, and please The bureau will review it early and give it affirmation.

1‧‧‧Power tool hammering group

11‧‧‧Axial

50‧‧‧shell

Claims (12)

A power tool hammering set includes: a body defining an axial direction and a radial direction, a radial span opening and forming two saddle portions along the axial direction on opposite sides of the span groove, along the axial direction The saddle is respectively provided with a connecting end for connecting with a power source of a power tool and a through hole communicating with the cross slot; a spindle axially passing through the through hole and rotatably connected to the saddle The body; a hammering block that is laterally movable and slidably coupled to the body, is disposed in the span and swingably spans the mandrel; wherein when the body is powered by the power source When driven to rotate, the hammer block is interlocked with the body and intermittently drives the spindle. The power tool hammering group of claim 1, wherein each of the saddles has a sliding slot laterally, the two sliding slots are axially oppositely disposed, and the hammering blocks are respectively disposed on one of the two sides of the sliding slot. In the pin portion, the hammer block can be laterally moved along the chute by the two pin portions and can swing around the two pin portions. The power tool hammering group according to claim 2, wherein the hammer block is provided with a receiving hole on each of the two sides, and each of the pin portions is inserted into the receiving hole. The power tool hammering group according to claim 3, wherein the two receiving holes are axially connected to form a pin hole penetrating the hammer block, and the two ends of a pin member are provided with the two pin portions and are worn Pin hole. The power tool hammering set according to claim 1, wherein the span has a bottom, the bottom portion includes a curved surface having the axial direction as an axis, and a sliding surface on the opposite sides of the curved surface, An abutting shoulder is protruded between the curved surface and each of the sliding abutting surfaces, and each of the abutting shoulders can circumferentially interfere with the hammering block. The power tool hammering group of claim 5, wherein the hammer block is provided with two sliding mechanisms relative to the two sliding surfaces, each of the sliding mechanisms sliding against a sliding surface and being The yaw shoulder interferes circumferentially. The power tool hammering set of claim 6, wherein the sliding mechanism comprises a recess recessed in the hammer block and a roller member received in the recess. The power tool hammering set according to claim 1, wherein the body has a first outer curved surface facing away from the span, the hammer block having a second outer curved surface facing away from the span, the first The first and second outer arc surfaces are located on the same circumscribed circle. The power tool hammering group according to claim 8, wherein the first outer curved surface is a poor arc surface, and the second outer curved surface is a superior arc surface. The power tool hammering set according to any one of claims 1 to 9, wherein the body is substantially water-dropped by the axial view, and the hammer block is substantially C-shaped. The power tool hammering set according to any one of claims 1 to 9, wherein the hammering block has a plurality of arc segments connected to the body and an end arc segment connected to the two ends of the arc segment. The two end arc segments are located on opposite sides of the mandrel, and by the radial view, the end arc segments are narrower than the body arc segments. The power tool hammering set according to claim 11, wherein the mandrel is radially convexly provided with a hammer block, and each of the end arc segments is provided with a impact block protruding toward the mandrel, and the hammer block is located at each of the impact blocks. One of the blocks swings on the path.