TWI683726B - Ratchet wrench construction - Google Patents

Abstract

The invention at least includes: a body for accommodating ratchet teeth and actuating member and a direction button, and a set of direction buttons for rotating at the body, wherein: the body includes a ratchet teeth and actuating member and a The head end for accommodating the direction button, a shaft part connected to the head end, and a recessed groove provided between the head end and the shaft part, and the bottom surface of the recessed groove is Equally curved, and two sides of the recessed groove are respectively connected to the head end portion and the shaft portion to form a front inclined guide surface and a rear inclined guide surface.

Description

Ratchet wrench construction

The invention relates to a ratchet wrench; in particular, to a structure of a ratchet wrench which can effectively prevent the accident of cutting injury caused by turning the toggle switch.

Press and use a ratchet wrench. Please refer to Figures 6 to 7. The main structure includes: a wrench body 90 for accommodating ratchet teeth 91 and actuating member 92 and a direction button 93, and a set of wrenches A directional knob 93 for turning at 90 places, and a cover body 95 that accommodates and seals the ratchet teeth 91 and the stopper 92 and the directional knob 93 at the wrench body 90, wherein: the wrench body 90 is at least made up of a Head end portion 900 for accommodating ratchet teeth 91 and stopper 92 and direction button 93, a shaft portion 902 connected to the head end portion 900, and between the head end portion 900 and the shaft portion 902 A straight recessed groove 901 is formed, and the top plane 9001 of the head end 900 is lower than the highest surface of the shaft portion 902 that is adjacent to the side of the recessed groove 901, and protrudes from the wrench The handle end 931 of the directional button 93 at the top plane 9001 of the main body 90 can be located above the recessed groove 901, so that the handle end 931 of the directional button 93 can be forced to operate above the recessed groove 901 Move back and forth, and achieve the control of switching steering.

As a general practitioner wants to form a suitable fit between the head end of the wrench body and the shaft part When the depth of the recessed groove is not only to consider the structural strength that the wrench body can withstand, but also to consider how to reduce the necessary processing cost of the wrench body (that is, the number of cutting operations must be minimized). A single-size special milling cutter is used to form a straight groove-shaped recessed groove across the two sides of the wrench body at a predetermined depth and a one-time cross-cutting milling penetration method. At this time, the bottom surface of the straight groove shape after processing And the sides are vertical, in other words, the side of the concave groove connected upward to the position of the shaft will form a sharp or small rounded intersection ridge, so that consumers are using the thumb to dial When the direction button moves, although the thumb part will be pressed against the direction button, the upper part of the inside of the thumb will also press on the ridge line of the intersection, and during the dialing process, it will make The thumb is slightly above the inside of the thumb and can slide along the ridge line of the intersection. Under such operation of the pressure movement, the lighter will make the thumb feel uncomfortable and want to break the skin, and the heavy will Accidental bleeding caused by direct cut (injury) or abrasion of the inner surface of the thumb is a major problem.

Therefore, how to develop a ratchet wrench structure that can prevent cuts when the direction button is switched is to be a priority issue for the industry.

The ratchet wrench structure of the present invention includes at least: a body for accommodating ratchet teeth and actuators and directional buttons, a set of directional buttons for rotation at the body, and a set of at the body A cover, wherein: the body includes a head end for accommodating ratchet teeth and actuating member and direction button, and a shaft part connected to the head end, and the head end is connected to the shaft A recessed groove is formed between the parts, so that the other end of the handle portion of the direction button that has been accommodated at the body can be vacated and located above the recessed groove; in addition, the two sides of the bottom surface of the recessed groove are equidistant arcs Curved, and the bottom of the recessed groove The two sides of the surface are respectively connected with the head end and the shaft part to form an inclined front inclined guide surface and a rear inclined guide surface, and the two sides of the bottom surface of the concave groove are respectively inclined to the front inclined guide surface and the rear inclined surface The opening angle formed between the guide surfaces is 100 to 160 degrees (especially 120 to 150 degrees is the best); in this way, the slope of the rear inclined guide surface can increase the above the recessed groove Accommodating space, so that the thumb that has been accommodated in the recessed groove will not be pressed against the intersection ridge formed between the rear inclined guide surface and the shaft portion, thereby reducing the thumb in the sliding movement Refers to the progressive claim that the accidental risk of a cut is occurring.

1‧‧‧Body

10‧‧‧Head end

100‧‧‧top plane

101‧‧‧Bottom plane

102‧‧‧ Placement area

103‧‧‧Ring groove

104‧‧‧ First shaft hole

105‧‧‧Second shaft hole

106‧‧‧Fan-shaped recess

107‧‧‧recessed groove

1070‧‧‧Bottom

1071‧‧‧Front inclined guide

1072‧‧‧Back inclined guide

15‧‧‧Shaft

2‧‧‧Direction button

20‧‧‧Body

21‧‧‧handle

22‧‧‧Locating hole

3‧‧‧ratchet teeth

30‧‧‧Drive

4‧‧‧brake parts

5‧‧‧cover

50‧‧‧ring groove

51‧‧‧Limit hole

6‧‧‧Locking parts

70‧‧‧Top piece

71‧‧‧Spring

A‧‧‧Opening angle

B‧‧‧Opening angle

C‧‧‧ Thumb

Fig. 1 is a schematic diagram of a three-dimensional combination when the present invention is applied.

FIG. 2 is an exploded perspective view of the main body and direction buttons of FIG. 1.

Figure 3 is the combined cross-section and partial enlarged view of Figure 1.

Figure 4 is a sectional view of Figure 3 when the thumb is toggled.

Fig. 5 is a plan view of Fig. 1.

Figure 6 is a schematic diagram of a conventional ratchet wrench combination.

Figure 7 is a sectional view of Figure 6 when the thumb is toggled.

The present invention relates to a ratchet wrench structure, please refer to Figure 1 to Figure 5, which at least includes: a body containing a ratchet tooth 3 and a moving member 4 and a direction button 2 a set of 1, A direction knob 2 for rotating at the body 1 and a set of covers 5 provided at the body 1, wherein: the body 1 includes at least one ratchet tooth 3 (i.e., conventional technology) The head end portion 10 for accommodating the actuator 4 (that is, conventional technology) and the direction button 2 and a shaft portion 15 connected to the head end portion 10, and the upper and lower edges of the head end portion 10 are respectively A top plane 100 and a bottom plane 101 are formed, and a hierarchical placement area 102 is formed at the bottom plane 101 of the head end portion 10, and the inner wall edge of the placement area 102 is formed A ring groove 103, and a first shaft hole 104 and a second shaft hole 105 penetrating the top plane 100 are provided at appropriate positions of the placement area 102, and the second shaft hole that has penetrated the top plane 100 is provided The other end of 105 is directly connected to the fan-shaped recess 106 already at the top plane 100, so that the ring groove 103 embedded in the placement area 102 and the ring groove of the cover 5 can be simultaneously locked by the fastener 6 50 places (or replace the locking member with a perforation of the cover 5 (not shown in the figure) and lock it to the body 1 to replace it, and the above-mentioned locking member is a bolt, etc.), so that the cover 5 can It is tightly sealed at the open end of the head end 10 of the body 1 and allows the ratchet teeth 3, the actuator 4 and the direction button 2 that have been accommodated in the placement area 102 to be sandwiched Between the inner bottom surface of the placement area 102 and the cover 5, so that one end of the ratchet teeth 3 and one end of the direction button 2 can be accommodated in the first shaft hole 104 and the second shaft hole 105, respectively Limit rotation, and enable the driving portion 30 of the ratchet teeth 3 (such as a quadrangular convex joint, etc.) to protrude outside the limit hole 51 of the cover 5 [or at the axial portion of the ratchet teeth 3 A penetrating driving portion 30 (such as a polygonal perforation, etc.) is provided instead, this embodiment is not drawn on the drawing]; and, the fan-shaped recess 106 already located at the head end 10 to the shaft 15 A concave groove 107 is formed, and the concave groove 107 is curved, and the edges of the bottom surface 1070 of the concave groove 107 are curved at equal distances, and the concave groove 1 The two sides of 07 are respectively connected with the head end portion 10 and the shaft portion 15 to form an inclined front inclined guide surface 1071 and a rear inclined guide surface 1072, wherein the bottom surface 1070 of the concave groove 107 and the front inclined guide surface The opening angle A formed between 1071 is 100 to 160 degrees (especially 120 to 150 degrees is the best), and the opening angle B formed between the bottom surface 1070 of the recessed groove 107 and the rear inclined guide surface 1072 is 100 To 160 degrees (especially 120 to 150 degrees is the best), the inclined space of the rear inclined guide surface 1072 can increase the accommodating space above the concave groove 107, which helps to accommodate the The thumb C in the recessed groove 107 will not press the intersection ridge formed by the rear inclined guide surface 1072 and the shaft portion 15 to slide, thereby reducing the accidental risk of the thumb C being cut during sliding In addition, the bottom surface 1070 of the recessed groove 107 will be lower than the bottom surface of the fan-shaped recess 106, and the bottom surface of the fan-shaped recess 106 is lower than the highest surface height of the top plane 100 of the head end 10, and make the top The highest surface height of the plane 100 will be lower than the highest surface of the shaft portion 15 that is adjacent to the recessed groove 107; the direction button 2 at least includes a driving member 4 (which is a conventional technology) ) The barrel portion 20 for movement, a handle portion 21 formed to extend outward from the barrel portion 20, and a positioning hole 22 for accommodating the abutting member 70 and the spring 71, when the direction button 2 sets When set in the second shaft hole 105, the end of the handle portion 21 can move above the recessed groove 107, but the end of the handle portion 21 does not touch the shaft portion 15 (i.e. only adjacent The portion of the handle portion 21 near the barrel portion 20 can touch the bottom surface of the fan-shaped recess 106, and the other end of the handle portion 21 is vacated above the recessed groove 107 to greatly lower Lower the contact area between the bottom surface of the handle portion 21 and the fan-shaped concave portion 106), and so that the highest surface height of the directional button 2 that has protruded out of the second shaft hole 105 will not be higher than the top plane 100 of the head end portion 10 The highest surface is convex, or the highest surface of the shaft portion 15 that is not close to the recessed groove 107 is convex; the cover 5 is provided with a ring groove 50 [or perforated at an appropriate position (Not shown in the figure) to replace], to buckle the ring groove 103 embedded in the placement area 102 and the ring groove 50 of the cover body 5 at the same time by the fastener 6 (or insert the fastener into the After the perforation (not shown) of the cover 5 is locked at the body 1 to be replaced, and the above-mentioned fastener is a bolt, etc., so that the cover 5 can be tightly sealed to the head end of the body 1 The open end of the portion 10, and the ratchet teeth 3, the stopper 4 and the direction button 2 which have been accommodated in the placing area 102 can be clamped on the inner bottom surface of the placing area 102 to the Between the cover bodies 5; In addition, a suitable limiting hole 51 is provided at an appropriate place of the cover body 5 so that the driving part 30 of the ratchet teeth 3 (such as a quadrangular protruding joint, etc.) can protrude from the cover body 5 A penetrating driving portion 30 (such as a polygonal perforation, etc.) is provided on the outer side of the limiting hole 51 of the cover 5 or on the axis of the ratchet tooth 3, so that the penetrating driving portion 30 can communicate with the penetrating shape The limit holes 51 are aligned with each other (not shown in the figure, which is the aspect of another embodiment of this creation); please refer to the fourth to fifth figures, when you want to change the switching direction, you only need to C directly presses on the handle 21 of the direction button 2 at this time, because the edges of the bottom surface 1070 of the concave groove 107 are curved at equal distances, and the two sides of the concave groove 107 are respectively An inclined front inclined guide surface 1071 and a rear inclined guide surface 1072 are formed between the head end portion 10 and the shaft portion 15 to make the depression The opening angle B formed between the bottom surface 1070 of the groove 107 and the rear inclined guide surface 1072 is 100 to 160 degrees, so that the inclined groove 107 can be increased above the concave groove 107 by the inclined arrangement of the rear inclined guide surface 1072 The storage space, which helps the thumb C that has been pressed on the handle 21 of the direction button 2 to be completely accommodated above the recessed groove 107 (as shown in the fourth picture) and will not be pressed against the rear oblique The intersection ridge formed between the guide surface 1072 and the shaft portion 15 can easily turn the direction button 2 to achieve the purpose of switching the steering, thereby greatly reducing the thumb C An accidental risk of injury from the ridgeline of the intersection occurs.

The above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention; therefore, any changes or modifications based on the features and spirit described in the scope of the application of the present invention should include Within the scope of patent application of the present invention.

1‧‧‧Body

10‧‧‧Head end

100‧‧‧top plane

101‧‧‧Bottom plane

102‧‧‧ Placement area

103‧‧‧Ring groove

104‧‧‧ First shaft hole

105‧‧‧Second shaft hole

106‧‧‧Fan-shaped recess

107‧‧‧recessed groove

1070‧‧‧Bottom

1071‧‧‧Front inclined guide

1072‧‧‧Back inclined guide

15‧‧‧Shaft

2‧‧‧Direction button

20‧‧‧Body

21‧‧‧handle

22‧‧‧Locating hole

3‧‧‧ratchet teeth

30‧‧‧Drive

4‧‧‧brake parts

5‧‧‧cover

50‧‧‧ring groove

51‧‧‧Limit hole

6‧‧‧Locking parts

70‧‧‧Top piece

71‧‧‧Spring

A‧‧‧Opening angle

B‧‧‧Opening angle

Claims (5)

A ratchet wrench structure includes at least: a body for accommodating ratchet teeth and actuators and directional buttons, a set of directional buttons for rotation at the body, and a set of cover for the body , Where: the body includes a head end portion for accommodating ratchet teeth and actuating member and direction button, and a shaft portion connected to the head end portion, and between the head end portion and the shaft portion A recessed groove is formed so that the other end of the handle portion of the direction button that has been accommodated at the body can be vacated and located above the recessed groove; the top and bottom edges of the head end are respectively formed with a top plane and a bottom plane, and A hierarchical placement area is formed in the head end, and the placement area is provided with a first axis hole and a second axis hole penetrating the top plane, and the second axis that has penetrated the top plane The other end of the hole is directly connected to the fan-shaped recess that is already at the top plane; and the bottom plane of the recessed groove will be lower than the bottom surface of the fan-shaped recess, and the bottom surface of the fan-shaped recess is higher than the surface of the top plane Low, so that the highest surface height of the top plane will be lower than the highest surface of the shaft portion; in addition, the two sides of the bottom surface of the concave groove are equally curved, and the bottom surface of the concave groove is An inclined rear inclined guide surface is formed between the side and the shaft portion, and an inclined front inclined guide surface is formed between the other side of the bottom surface of the recessed groove and the head end; in addition, the recessed groove The opening angle formed between the bottom surface and the rear inclined guide surface is 100 to 160 degrees, and the opening angle formed between the bottom surface of the recessed groove and the front inclined guide surface is 100 to 160 degrees; The inclined arrangement of the rear inclined guide surface can increase the accommodation space above the concave groove, and help the thumb that has been accommodated in the concave groove not to be pressed between the rear inclined guide surface and the shaft portion The formed intersection slides at the ridgeline, thereby reducing the accidental risk of the thumb being cut by the thumb. The structure of the ratchet wrench as described in item 1 of the patent application, wherein the opening angle is preferably 120 to 150 degrees. The ratchet wrench structure as described in item 2 of the patent application scope, wherein the directional button includes a barrel portion for driving the actuator to move, a handle portion formed to extend outward from the barrel portion, and A positioning hole for accommodating the top piece and the spring is accommodated. When the directional button is nested in the second shaft hole, one end of the handle part can be moved above the recessed groove, but it will not hesitate Touch the shaft. The ratchet wrench structure as described in item 3 of the patent application scope, wherein the cover system is sealed at the open end of the head end of the body, and the ratchet teeth, the stopper and the direction button can be clamped Placed between the inner bottom surface of the placement area and the cover; and the cover is provided with a through-shaped limiting hole for the driving portion of the ratchet teeth to protrude outside the limiting hole, or The penetrating driving part which has been provided on the axial center portion of the ratchet tooth can be aligned with the penetrating limiting hole. The ratchet wrench structure as described in item 4 of the patent application scope, wherein the cover body is provided with a ring groove or a perforation to simultaneously buckle the ring groove embedded in the cover body and the ring of the placement area by a fastener At the groove, or by using a fastener to penetrate into the perforation and then locked at the body, so that the cover can be reliably sealed at the open end of the head end of the body, and the ratchet teeth, the latch The moving member and the direction button can be sandwiched between the inner bottom surface of the placement area and the cover, and one end of the ratchet teeth and one end of the direction button can be accommodated in the first shaft hole and the first Limit rotation in the two-axis hole.

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