TWM557660U - Hammering device - Google Patents

Abstract

A hammering device comprises a hammer seat, a transmission member, a hammer, and an output shaft. The hammer base includes a bottom wall, a ring wall surrounding an axis, and a buffer inner edge surrounding the inner wall surface of the ring wall, the inner wall of the ring wall having an axial groove, the bottom wall having a connection A jack that leads to the axial groove. The transmission member is rotatably disposed on the hammer base and includes an insertion tube inserted into the bottom wall, and a rotating disk received in the inner edge of the buffer, the rotating disk having a pair of grooves corresponding to the axial grooves . The hammer includes a rotating shaft rotatably inserted into the insertion hole and located in the axial groove, and a hammer block having two impact portions. The output shaft is rotatably inserted into the rotating disk and includes two latching blocks for being latched by the impact portions.

Description

Hammering device

The present invention relates to a device for transmitting impulse to a screwdriver or a nut socket wrench, and more particularly to a hammer device.

As shown in FIG. 1 and FIG. 2 , the hitting device 1 of the prior pneumatic tool is used for locking or unloading the nut and the screw. The striking device 1 includes a hammer seat 11 , a hammer 12 , and a rotating shaft . 13. The hammer base 11 has a hollow base 111 and a drive plate 112 mounted on the bottom end of the hollow base 111 and having a ratchet hole 110 and a shaft hole 100, and the drive plate 112 and the hollow seat 111 are inside. Weekly contact. The hammer 12 is rotatably disposed on the hammer base 11 and has two impact surfaces 121 symmetrically and oppositely disposed, and two impact ends 122 respectively formed on both sides. The rotating shaft 13 rotatably passes through the driving plate 112 and has a shaft 131 penetrating the shaft hole 100, and two left and right symmetrical and oppositely disposed on the shaft 131 and movably engaging the impact The locking portion 132 of the end 122 is connected to the ratchet hole 110 by a pneumatic tool (not shown) and drives the striking device 1 to rotate. The rotating shaft 13 can drive a screw (not shown) to lock tightly. When the locking force of the screw is greater than the rotational force of the rotating shaft 13, the rotating shaft 13 is no longer rotated. At this time, because the pneumatic tool continues to operate, the driving plate 112 is driven to drive the impact of the hammer 12. The end 122 strikes the latching portion 132, and the hammer 12 simultaneously rebounds due to the impact reaction force. Due to the interaction of the reaction force and the impact force, the impacting ends 122 of the hammer 12 continuously strike in turn. The locking portions 132 have the effect of locking the screws tighter.

However, during the impact of the impacting ends 122 of the hammer 12 against the clamping portions 132, vibrations are continuously generated, and the inner peripheral surface of the hollow seat 111 of the hammer block 11 is subjected to the transmission plate. The vibration energy transmitted by 112 causes the damage rate of the hammer seat 11 to be high, which detracts from the service life of the hitting device 1.

Therefore, the object of the present invention is to provide a hammering device which can reduce the damage rate and increase the service life.

Thus, the novel hammering device comprises a hammer seat, a transmission member, a hammer, and an output shaft.

The hammer base includes a bottom wall, a ring wall extending from the bottom wall and surrounding an axis, a buffer inner edge surrounding the inner wall surface of the ring wall and extending to the bottom wall, and a bottom wall and The ring wall cooperates with the hammer chamber, the inner wall of the ring wall has an axial groove parallel to the axis, the bottom wall has a through hole disposed along the axis and penetrating the top and bottom, and a through hole The holes are spaced apart and aligned and communicate with the receptacle of the axial groove.

The transmission member is rotatably disposed on the hammer base along the axis, and includes an insertion tube inserted into the through hole and surrounding a transmission hole extending along the axis, and an outer diameter extending from the insertion tube a rotating disk larger than the diameter of the through hole and accommodated in the inner edge of the buffer, the rotating disk having a pair of recessed grooves that should be axially grooved.

The hammer includes a rotating shaft rotatably inserted into the insertion hole of the hammer base and located in the axial groove, a hammer block extending from the rotating shaft, and a connecting shaft and the hammer block a socket block accommodated in the slot, the hammer block having two impact portions disposed opposite to the axis of the shaft.

The output shaft rotatably penetrates the hammer chamber along the axis and is inserted into the rotating disk of the transmission member, and includes two latching blocks for being jammed by the impact portions.

The utility model has the advantages that the transmission member is covered by forming the buffer inner edge on the inner wall surface of the ring wall, and the transmission member does not directly contact the inner wall surface of the hammer seat, and can be reduced by the transmission member to The vibration amplitude of the hammer seat makes the hammer seat not easily damaged, and therefore has a long service life.

Referring to Figures 3, 4 and 5, an embodiment of the hammering device of the present invention comprises a hammer base 2, a transmission member 3, a hammer 4, an output shaft 5, and an outer cover 6.

Referring to FIG. 4 , FIG. 5 and FIG. 6 , the hammer base 2 includes a ring wall 21 , a bottom wall 22 , a buffer inner edge 23 , and a hammer chamber 200 formed by the bottom wall 22 and the ring wall 21 . The annular wall 21 extends from the bottom wall 22 toward the top end and surrounds an axis L, and has an eccentric inner wall surface 211 having an axial recess extending parallel to the axis L and extending from the top surface to the bottom surface. Slot 212. The bottom wall 22 has a through hole 221 disposed along the axis L and penetrating the top and bottom, and a socket 222 spaced apart from the through hole 221 and extending from the top surface to the bottom surface. The socket 222 is aligned and communicated with the hole 221 The axial groove 212 is preferably integrally formed with the bottom wall 22 and made of stainless steel. The buffer inner edge 23 is disposed around the inner wall surface 211 of the ring wall 21 and extends to the bottom wall 22. In the embodiment, the buffer inner edge 23 has a central portion 231, and two of the central segments 231 are respectively The end portion 231 of the buffer inner edge 23 is opposite to the insertion hole 222. Preferably, the buffer inner edge 23 surrounds at least 60%. The circumference of the inner wall surface 211, that is, the surrounding angle of the buffer inner edge 23 is at least 216 degrees.

The transmission member 3 is rotatably disposed on the hammer base 2 along the axis L, and includes an insertion tube 31 inserted into the through hole 221 and surrounding a transmission hole 311 extending along the axis L, and a plug The rotating tube 32 of the tube 31 extending toward the top end and having a diameter larger than the diameter of the through hole 221 and being accommodated in the buffer inner edge 23 is in the embodiment, the driving hole 311 is replaceable and can achieve the transmission effect. A non-circular hole, preferably a ratchet hole. The rotating disk 32 has a connecting hole 321 disposed along the axis L and communicating with the transmission hole 311, and a fitting groove 322 disposed from the outer peripheral surface toward the connecting hole 321 and corresponding to the axial groove 212. Preferably, the top surface of the rotating disk 32 is aligned with the top surface of the buffer inner edge 23.

Referring to Figures 4, 6, and 8, the hammer 4 is rotatably inserted into the rotating disk 32. The hammer 4 includes a socket 222 rotatably inserted in the hammer base 2 and located in the axial direction. Preferably, the rotating shaft 43 in the recess 212, a hammer block 42 extending from the rotating shaft 43, and a socket block 41 connected to the rotating shaft 43 and the hammer block 42 and received in the recess 322, preferably, The hammer 4 is integrally formed to improve structural strength. The bottom surface of the hammer block 42 contacts the rotating disk 32 of the transmission member 3, and has two striking portions 422 disposed opposite to the rotating shaft 43 and two oppositely disposed with the rotating shaft 43 and used for The impact surface 421 of the inner wall surface 211 of the ring wall 21 is struck. The hammer block 42 is swingable to the left and right sides with the rotating shaft 43 as a swing center, and the impact portions 422 are respectively adjacent to the loop end segments 232 of the buffer inner edge 23 .

The output shaft 5 is rotatably inserted into the hammer chamber 200 along the axis L and inserted into the rotating disk 32 of the transmission member 3, and includes a shaft 51 rotatably penetrating the connecting hole 321, and two a latching block 52 that is symmetrically disposed and oppositely disposed and formed on opposite sides of the shaft 51. The shaft 51 has an insertion section 511 penetrating the connecting hole 321 and a direction opposite to the interposing section. 511 and exposed to the connecting portion 512 of the hammer base 2, and a yaw portion 513 between the insertion portion 511 and the connecting portion 512 and surrounding the whole circumference, the outer diameter of the yoke portion 513 is larger than the insertion The outer diameter of the segment 511 is greater than the outer diameter of the connecting segment 512. The latching blocks 52 are located between the interposing section 511 and the connecting section 512. Preferably, the latching blocks 52 are located between the interposing section 511 and the abutting shoulder section 513. 52 is used to be jammed by the impact portions 422.

The outer cover 6 is used to close the hammer chamber 200 and is inserted into the output shaft 5, and the outer cover 6 is fitted to the top end of the hammer base 2, and includes a shaft L disposed along the axis L for the output shaft 5 to pass through. The sleeve hole 61 is disposed, and a positioning groove 62 is provided from the outer circumferential surface toward the sleeve hole 61 and the rotation shaft 43 of the hammer 4 penetrates. The abutting shoulder portion 513 of the output shaft 5 is received in the sleeve hole 61. .

As shown in FIG. 6, FIG. 7, and FIG. 8, the transmission of the transmission member 3 is obtained when the present embodiment is sleeved on a pneumatic tool (not shown) and locked by a screw (not shown). The hole 311 is connected to the pneumatic tool, and the transmission member 3 is driven by the pneumatic tool and is clamped to one of the latching blocks 52 of the output shaft 5 via one of the impact portions 422 of the hammer 4, thereby driving the output shaft 5 Rotating, by the output shaft 5 continuously rotating and gradually locking the screw until the screw is locked until the locking force is greater than the rotational force of the output shaft 5, the output shaft 5 is no longer rotated, and the blow The hammer 4 will reversely rotate due to the reaction force of the impact portion 422 striking the latch block 52. Since the pneumatic tool continuously transmits energy to the transmission member 3, the transmission member 3 will again drive the hammer 4 and cause the hammer 4 to be driven again. An impact portion 422 hits the latching block 52 again to generate a hammering force greater than the locking force, and the striking portion 422 pivoted about the shaft 51 by the hammering block 42 continuously strikes the latching block. The hammering force of 52 can produce the effect of locking the screw tighter. During the impact, the hammer 4 Such impact surface 421 will be with respect to the inner wall surface of the annular wall 21 is swung back and forth about 211 taps.

Conversely, when the screw is to be loosened, the impact portion 422 of the hammer block 42 is continuously struck against the latching block 52. When the hammering force is greater than the loosening force of the screw, the screw can be gradually loosened. Then, loosen the screw.

Through the above description, the advantages of the present invention can be summarized as follows:

1. The transmission member 3 is covered by forming the buffer inner edge 23 on the inner wall surface 211 of the ring wall 21, so that the transmission member 3 does not directly contact the inner wall surface 211, and the vibration amplitude of the hammer holder 2 can be reduced. Therefore, the hammer seat 2 is not easily damaged, and the present invention has a low damage rate and a long service life as compared with the conventional one.

2. The greater the amplitude of the vibrations at the location where the impact portions 422 strike the latching blocks 52, the present invention utilizes the loop end segments 232 that widen the buffer inner edges 23 to cover the transmission. Item 3, can make the shock absorption effect better.

3. The buffer inner edge 23 of the present invention surrounds at least 60% of the circumference of the inner wall surface 211, which can more effectively reduce the vibration amplitude of the hammer seat 2 and increase the service life of the novel.

4. By surrounding the abutment portion 513 of the shaft 51 all around, the overall rigidity and structural strength of the output shaft 5 can be enhanced.

5. Cooperating with the eccentric arrangement of the inner wall surface 211, and using the buffer inner edge 23, the weight of the hammer base 2 relative to the swing center of the hammer 4 can be increased to increase the swing inertia, and the hammering force can be improved.

In summary, the hammering device of the present invention can reduce the vibration amplitude of the hammer base 2, and therefore, can reduce the damage rate and increase the service life, and can truly achieve the purpose of the present invention.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

2‧‧‧ Hammer
200‧‧‧ Hammering room
21‧‧‧Circle
211‧‧‧ inner wall
212‧‧‧Axial groove
22‧‧‧ bottom wall
221‧‧‧through hole
222‧‧‧ jack
23‧‧‧ Buffer inner edge
231‧‧‧ central section
232‧‧‧ring end segment
3‧‧‧ Transmission parts
31‧‧‧Insert tube
311‧‧‧ drive hole
32‧‧‧ rotating disk
321‧‧‧connection hole
322‧‧‧ slotted
4‧‧‧ hammer
41‧‧‧ Sockets
42‧‧‧ hammering block
421‧‧‧ impact surface
422‧‧‧ Impact Department
43‧‧‧ shaft
5‧‧‧ Output shaft
51‧‧‧ shaft
511‧‧‧ inserted section
512‧‧‧ Connection section
513‧‧‧Abutment
52‧‧‧ card block
6‧‧‧ Cover
61‧‧‧ sockets
62‧‧‧ positioning slot

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is a cross-sectional view of a conventional hitting device; Figure 2 is a view similar to Figure 1, illustrating Figure 3 is a perspective assembled view of an embodiment of the hammering device of the present invention; Figure 4 is an exploded perspective view of the embodiment of the hammering device of the present invention; Figure 4 is an exploded perspective view of the embodiment of the hammering device; An exploded perspective view of the embodiment is viewed from another angle; FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 4, illustrating a state in which a hammer is in an impact on an output shaft; 7 is a view similar to FIG. 6, illustrating the state in which the hammer is swung to the other side; and FIG. 8 is a cross-sectional view taken along line VIII-VIII of FIG.

Claims (9)

A hammering device comprising: a hammer base comprising a bottom wall, a ring wall extending from the bottom wall and surrounding an axis, a buffer inner edge surrounding the inner wall surface of the ring wall and extending to the bottom wall And a hammer chamber formed by the bottom wall and the ring wall, the inner wall of the ring wall having an axial groove parallel to the axis, the bottom wall having a central axis disposed along the axis and penetrating the top and bottom a through hole, and a socket spaced apart from and aligned with the through hole; and a transmission member rotatably disposed along the axis, and including a through hole An insertion tube surrounding a transmission hole extending along the axis, and a rotating disk extending from the insertion tube and having an outer diameter larger than a diameter of the through hole and accommodated in the inner edge of the buffer, the rotating disk has a pair a slot that should be axially grooved; a hammer comprising a shaft rotatably inserted into the socket of the hammer seat and located in the axial groove, a hammer block extending from the shaft, and a hammer a socket block connected to the rotating shaft and the hammer block and accommodated in the slot, the hammer block has two The rotating shaft is an impact portion disposed in a reverse direction; and an output shaft rotatably penetrating the hammer chamber along the axis and inserted into the rotating disk of the transmission member, and includes two for being impacted by the impact The card block of the card. The hammering device of claim 1, wherein the buffer inner edge has a central section, and two annular end sections each extending outwardly from opposite ends of the central section and having a progressively larger width. The hammering device of claim 2, wherein a central portion of the buffer inner edge is disposed opposite the insertion hole. The hammering device of claim 1, wherein the buffer inner edge surrounds at least 60% of the circumference of the inner wall surface. The hammering device of claim 1, wherein the hammer block further has two impact faces disposed oppositely to the axis of rotation and for striking an inner wall surface of the ring wall. The hammering device of claim 5, wherein the rotating disk has a connecting hole disposed along the axis and communicating with the transmission hole, the output shaft further comprising a shaft penetrating the connecting hole, and formed on the shaft The latching blocks on opposite sides of the shaft, the shaft has an insertion section penetrating the connecting hole, and a connecting section opposite to the inserting section, the latching blocks are located at the insertion section Between the segment and the connected segment. The hammering device of claim 6, wherein the output shaft further comprises an abutting shoulder portion between the insertion portion and the connecting portion and surrounding the entire circumference, the outer diameter of the abutting shoulder portion being larger than the insertion portion The outer diameter of the segment is greater than the outer diameter of the connecting segment, and the latching blocks are located between the interposing segment and the abutting shoulder segment. The hammering device of claim 7, further comprising an outer cover for closing the hammering chamber, the outer cover comprising a sleeve hole disposed along the axis, and a sleeve disposed from the outer peripheral surface toward the sleeve hole And a positioning slot for the spindle of the hammer to penetrate, the abutting shoulder of the output shaft is received in the sleeve hole. The hammering device of claim 1, further comprising an outer cover for closing the hammering chamber, the outer cover comprising a sleeve hole disposed along the axis for the output shaft to pass through, and a peripheral portion a positioning groove facing the socket and for the shaft of the hammer to penetrate.