TW201542328A - Shock absorbing claw hammer - Google Patents

Abstract

Disclosed is a claw hammer, comprising a head and a handle. The head comprises a knocking part and a claw part extending toward the other side from the knocking part. The handle is connected to the head. The handle comprises a hole and a connecting section engaging the handle and the head, which is opened from the hole along a direction toward the claw part until the edge of the handle to form a gap. The connecting section and the gap are separated by the hole and are not on the same side. Thereby, the claw hammer can pull up a nail hammed into a support face to decrease the damage possibility to the support face and possesses the advantages of reducing the shock, reducing fatigue and controlling the usage quantity of material.

Description

Shock-absorbing claw hammer

The invention relates to a tapping tool. Especially a hammer that has both tapping and nail pulling purposes.

The claw hammer is used to perform a work such as tapping a nail or pulling a nail. Therefore, the claw hammer usually consists of a head and a handle. The head includes a tapping portion and a nail removing portion extending from the tapping portion to the other side. The handle is attached to the head and extends generally a certain length generally perpendicular to the head.

In the tapping operation, the nail is driven into a support surface, such as a table top. One part of the energy generated by the tapping is converted into heat and dissipated, and part of the energy is transmitted to the grip through the head of the claw hammer, causing a user's hand to operate the grip to be shock-wave-like and easily cause fatigue.

During the nail pulling, the claw hammer grasps the nail head of the nail with the nail pulling portion, and pulls the nail upwards with a strong force, which easily damages the structure of the desktop and causes troubles that are not easy to repair.

Therefore, how to reduce the vibration of the hand and reduce the fatigue under the premise of reducing the damage rate has become an urgent problem to be solved in this creation.

In view of this, the inventors have in-depth discussion of the problems of the prior art, and actively pursued solutions based on years of experience in research and development and manufacturing of related industries, and finally succeeded in improving a shock-absorbing claw hammer to improve the conventional invention. problem.

The main purpose of the invention is to adopt a buffer structure and a restriction mechanism, and to reduce the damage rate, the nail hammer can reduce the vibration of the hand, reduce the fatigue, and control the amount of material.

Due to the above object, the claw hammer of the present invention comprises:

At one end, it includes a tapping portion and a nail removing portion extending from the tapping portion to the other side.

A handle that is attached to the head and extends generally perpendicular to the head. The handle includes: a hole formed on the handle; a slit cut from the hole toward the nail pulling portion to the edge of the handle; and a connecting portion connecting the handle and the head, the gap being separated from the slit by the hole Not on the same side. In particular, the handle accurately controls the amount and toughness of the connecting section by the size of the hole.

A restriction mechanism includes two shape-symmetrical accommodating portions and a restriction member. These receptacles are placed in the grip and are located on both sides of the slit, one receptacle being wider than the other receptacle. The limiting member includes a main body and two symmetrical end pieces, each end piece being coupled to the main body and placed in a corresponding receiving portion.

In this way, the connecting section is like a cantilever-like spring, so that the nail pulling part pulls up the nail in a gentle manner, which can form a certain cushioning and/or shock absorbing effect during the nail pulling, and can reduce the desktop receiving more than the hard pulling nail. Loss rate. At the same time, the connecting section counteracts part of the energy of the nail hitting the nail, reducing the vibration of the hand and reducing fatigue. In addition, the restricting member restricts the gap by the main body to avoid excessive opening.

Hereinafter, the objects, structures, and features of the related embodiments will be described in detail based on the drawings, and it is believed that the techniques, means, and effects of the present invention can be obtained from an in-depth and specific understanding.

10‧‧‧Claw hammer

12‧‧‧ head

14‧‧‧Knocking Department

16‧‧‧ nailing department

18‧‧‧ gap

20‧‧‧Handle

22‧‧‧ holes

24‧‧‧ gap

26‧‧‧ Connection section

30‧‧‧Restricted institutions

32‧‧‧ accommodating department

34‧‧‧ wedge block

36‧‧‧Bevel

38‧‧‧ height drop

40‧‧‧Restrictions

42‧‧‧ Subject

44‧‧‧End piece

46‧‧‧ side film

50‧‧‧ spacing

52‧‧‧Maximum distance

60‧‧‧Support surface

62‧‧‧ nails

64‧‧‧nail head

Fig. 1 is an exploded perspective view showing the first embodiment of the claw hammer of the present invention.

Fig. 2 is a plan view showing the combination of the restriction mechanisms of Fig. 1.

Fig. 3 is a cross-sectional view of the restriction mechanism of Fig. 2.

Fig. 4 is a view showing the state of use of the claw for pulling the nail.

Figure 5 is a diagram showing the state of use of the claw hammer for tapping.

Figure 6 is a partial cross-sectional view showing a second embodiment of the claw hammer of the present invention.

Figure 7 is a perspective view of a restraining member of the third embodiment of the claw hammer of the present invention.

Figure 8 is a perspective view of a fourth embodiment of the claw hammer of the present invention.

Referring to Figure 1, the structure of a particular embodiment of the claw 10 is illustrated. This claw hammer 10 includes a head 12, a grip 20 and a restricting mechanism 30. The head 12 is divided into a tap portion 14 and a nail pull portion 16. The nail removing portion 16 extends from the tapping portion 14 to be bifurcated, and has a substantially V-shaped notch 18, which is suitable for the case where the nail is removed.

The handle 20 is coupled to the head 12 and extends generally a certain length generally perpendicular to the head 12. In the present embodiment, the handle 20 and the head 12 are designed to be integrated. In some embodiments, the handle 20 is separate from the head 12 and the two are used in combination.

The handle 20 includes a hole 22, a slot 24 and a connecting section 26. The hole 22 is formed in the middle portion of the grip 20, and the large and small changes of the hole 22 can precisely control the amount and toughness of the connecting portion 26. Cutting by a laser cutting, discharge (EDM) cutting or grinding water jet, the wall surface of the hole 22 is cut toward the edge of the gripping portion 16 toward the nail removing portion 16, and a slit 24 of a certain shape is cut, so that the grip 20 is divided into two parts. Parts are joined together by a connecting section 26. Thus, the connecting section 26 and the slit 24 are separated by the aperture 22 and are not on the same side.

The restriction mechanism 30 includes two receptacles 32 and a restraining member 40. Referring to Fig. 2, the accommodating portions 32 are symmetrical grooves, and the width of the accommodating portion 32 near the nail removing portion 16 is larger than the width of the other accommodating portion 32, so that the grip 20 has two wedge-shaped blocks 34, each of which has a wedge-shaped block 34. Between the receiving portion 32 and the slit 24. In addition, each of the accommodating portions 32 is inclined to a certain depth from the edge of the handle 20 to the hole 22 at an angle, and the bottom of the accommodating portion 32 is adjacent to the slit 24, and the opening of the accommodating portion 32 is far from the slit 24. As such, the distance between the two wedge blocks 34 adjacent the opening of the receptacle 32 is defined as a maximum distance 52.

The restricting member 40 includes a main body 42, two symmetrical end pieces 44, and two side pieces 46. The body 42 is a thin rectangular piece whose length has a direct relationship to the extent to which the slit 24 is opened.

Each end piece 44 is bent inwardly from the short side of the body 42 with an angle therebetween to provide the end piece 44 with the force required for resetting. Thus, the free ends of the two end pieces 44 are spaced apart from one another by a distance 50 that is less than the maximum distance 52 of the two wedge blocks 34. When the end piece 44 is placed in the receiving portion 32, the main body 42 is brought along the bevel of the wedge block 34 to the edge of the handle 20, and even the top end of the wedge block 34 is tightly contacted, so that the restricting member 40 is not easily separated.

It is noted that there is a height drop 38 at the top end of the wedge block 34 and the edge of the handle 20 that is substantially equal to the thickness of the restraining member 40 (or body 42) such that the outer surface of the body 42 remains flush with the edge of the handle 20.

As shown in FIG. 3, each side panel 46 is bent over the corresponding long side of the body 42, which is generally perpendicular to the body 42 and is juxtaposed on the same side of the two wedge blocks 34, preventing the restraining member 40 from sliding away from the handle 20.

Next, the use of the claw 10 will be further described. As shown in Fig. 4, a nail 62 is nailed to a support surface 60, such as a table top. The claw 10 is touched by the head 12 On the face 60, the nail 62 is grasped by the nail removing portion 16 to expose the nail head 64 of the support surface 60. A force is applied to the grip 20 to cause the striking portion 14 to swing a certain extent toward the support surface 60 like a seesaw. Then, the grip 20 returns to the original position in the direction of the nail removing portion 16, so that the striking portion 14 repeats the same swing until the portion of the nail 62 deep into the supporting surface 60 is pulled up by the nail removing portion 16.

During the nail pulling, the connecting section 26 is like a cantilever spring, and has a certain cushioning effect, and the nail 62 is gradually pulled out in a gentle operation manner, which can reduce the damage rate of the supporting surface 60 more than the hardening of the nail 62.

It should be noted that the narrow receiving portion 32 cooperates with the corresponding end piece 44 to transmit the kinetic energy of the handle 20 to the main body 42 of the restricting member 40, and the other end piece 44 is moved in the same direction and slightly in the wide receiving portion 32. Thus, the wall surface of the corresponding wedge block 34 is touched, and the nail removing portion 16 is pulled up to pull up the nail 62. The restriction member 40 at the moment prevents the two wedge members 34 from being excessively separated by the length of the main body 42, and thus limits the extent to which the slit 24 is opened, and can also be moderated by a brief period of time during which the end piece 44 is slightly swung within the wide receiving portion 32. The conflicting force between the nail removing portion 16 and the nail 62, the nail 62 and the supporting surface 60 relatively slows the shock-like fluctuation.

This connecting section 26 is as beneficial to the tapping operation as the restricting member 40. As shown in Fig. 5, the claw 10 hits the nail head 64 with the striking portion 14, and the nail 62 is driven into the support surface 60. The reaction force of the nail 62 is transmitted to the head 12 of the claw 10 through the striking portion 14, so that the two wedge members 34 are brought close to each other to reduce the slit 24, and even the two wedge members 34 are collided with each other. At this moment, the connecting section 26 can reduce the amplitude of the vibration, offset part of the force of each tapping, reduce the vibration of the hand, and reduce fatigue. In addition, the restricting member 40 contacts the wall surface of the wide receiving portion 32 with the end piece 44, and shares the partial force of the collision of the two wedge blocks 34, which is also effective for reducing the hand vibration.

According to the above structure, other embodiments can be derived. As shown in Figure 6, pull out The second embodiment of the hammer is substantially the same as the first embodiment except that each of the side panels 46 is inclined inwardly and arranged outside a bevel 36 formed on the side of the wedge block 34. As such, the side profile of the handle 20 is more flat than in the first embodiment.

As shown in Fig. 7, the third embodiment of the claw hammer is substantially the same as the first embodiment, except that the edge of each side panel 46 is substantially trapezoidal, and the two oblique sides of the side panel 46 and the corresponding end piece 44 adjacent.

As shown in Fig. 8, the fourth embodiment of the claw 10 is substantially the same as the first embodiment, except that the hole 22 is formed in the portion of the handle 20 near the head 12, so that the connecting portion 26 engages the handle 20 with The head 12, the three are enclosed by the aperture 22, and the associated restriction mechanism 30 changes position with the aperture 22.

The above examples are merely illustrative of the invention and are not intended to limit the invention. Various changes, modifications, and applications derived from the above-described embodiments will be apparent to those skilled in the art.

20‧‧‧Handle

22‧‧‧ holes

24‧‧‧ gap

26‧‧‧ Connection section

30‧‧‧Restricted institutions

32‧‧‧ accommodating department

34‧‧‧ wedge block

38‧‧‧ height drop

40‧‧‧Restrictions

42‧‧‧ Subject

44‧‧‧End piece

46‧‧‧ side film

50‧‧‧ spacing

52‧‧‧Maximum distance

Claims (7)

A shock-absorbing claw hammer (10) comprising: a head (12) comprising a tapping portion (14), and a nail removing portion (16) extending from the tapping portion; a grip (20), It is connected to the head (12) and extends substantially perpendicular to the head. The handle comprises: a hole (22) formed on the handle (20); a slit (24) extending from the hole (22) The nail portion (16) is cut toward the edge of the handle (20); a connecting portion (26) that engages the handle (20) and the head (12), and the connecting portion and the slit (24) are separated by the hole (22) and Not on the same side, with cushioning and/or shock absorbing effect; a limiting mechanism (30) comprising: two symmetrical accommodating portions (32) which are placed in the grip (20) and located on both sides of the slit (24), one The receiving portion is wider than the other receiving portion; a limiting member (40) includes a main body (42) and two shape-symmetrical end pieces (44), each end piece being connected to the main body and being disposed in the corresponding receiving portion (32) ), the gap of the slit (24) is limited by the body. The shock-absorbing claw hammer according to claim 1, wherein the handle (20) has two wedge-shaped blocks (34), and each wedge-shaped block is interposed between the receiving portion (32) and the slit (24). There is an angle between the body (42) and the end piece (44) such that a spacing (50) is formed between the free ends of the two end pieces, which is smaller than the maximum distance (52) of the two wedge pieces. The shock-absorbing claw hammer according to claim 2, wherein each of the receiving portions (32) is a groove that is caught in the grip (20), the bottom of the groove is close to the slit (24), and the notch is away from the slit; The maximum distance (52) refers to the distance between the two wedge blocks (34) adjacent to the slot. The shock-absorbing claw hammer according to claim 2, wherein the wedge block (34) and the grip (20) have a height drop (38) which is substantially equal to the thickness of the main body (42). The shock-absorbing claw hammer according to claim 2, wherein the main body (42) is rectangular, the short side has a corresponding end piece (44), and the long side has a side piece (46). The side panels are located on the same side of the two wedge blocks (34). A shock-absorbing claw hammer according to claim 5, wherein each side panel (46) is inclined inwardly and arranged outside a bevel (36) formed on a side of the wedge block (34). The shock-absorbing claw hammer according to claim 1, wherein the hole (22) is formed at or adjacent to the middle portion of the grip (20).