TWI597132B - Elastic parts structure and forming method of two-way switch of ratchet wrench - Google Patents

Description

Elastic member structure and forming method for two-way switching of ratchet wrench

The invention relates to an elastic member, in particular to an elastic member structure and a molding method applied to two-way switching of a ratchet wrench.

According to a conventional ratchet wrench structure, as shown in FIG. 13, the wrench 30 is assembled with a rotating member 40 at one end, and the rotating member 40 can be rotated at the end of the wrench 30, thereby pulling the nut Or the bolt is locked and unscrewed, and a toothed ring 41 is disposed on the outer edge of the rotating member 40, and a ratchet member 50 is coupled to the corresponding tooth on the side of the ring gear 41, and the ratchet member 50 can move on the wrench 30. The inner first chamber 31 and the other half of the ratchet member 50 are formed with a curved surface 51 at the other end surface of the toothed rotating member 40. The second 30 is connected to the first groove 31. The second slot chamber 32 is provided with a control block 60, and the control block 60 defines a jack 61, and a spring 62 is mounted on the jack 61, and a sleeve 63 is sleeved on the top end of the spring 62 to make the sleeve 63 is pushed by the spring 62 against the curved surface 51 of the ratchet member 50, and the control block 60 controls the abutment 63 to select the ratchet member 50 to be disposed on different sides of the first groove chamber 31, so that a single sheet can be produced. Pull the effect to the drive.

It is not difficult to find out that there are some shortcomings in the above-mentioned conventional structure. The main reasons are as follows: (1) The spring 62 and the abutment 63 are interposed between the ratchet member 50 and the control block 60, and the One end of the abutting sleeve 63 is pushed by the spring 62, and the other end of the abutting sleeve 63 is slid against the curved surface 51 of the ratchet member 50. When the ratchet member 50 is pulled by the wrench 30, vibration is generated or switched at the control block 60. At the same time, one end of the abutting sleeve 63 slides on the curved surface 51 of the ratchet member 50, and the other end will be laterally rubbed on the insertion hole 61 of the control block 60, so that the abutting sleeve 63 and the spring 62 are easily ejected or generated by the insertion hole 61. Deformation, and will form resistance to reduce its operational stability, and there is a clear problem of insufficient structural strength.

(2) The assembling step of the wrench 30 is to first install the control block 60 at the second slot chamber 32, and firstly perform the fastening and fixing of the control block 60, and the restriction control block 60 can only perform the rotation operation, and further The end of the first groove chamber 31 places the spring 62 into the insertion hole 61, and the abutment 63 is sleeved on the top end of the spring 62. Since the opening of the first groove chamber 31 faces the rotating member 40, the action of the mounting spring 62 will be difficult. Moreover, the volume of the spring 62 and the abutting sleeve 63 is small, which is easy to be dropped or lost during the assembly process, and the assembly difficulty is further improved, so that it is difficult to assemble and the lack of excessive components.

In view of this, the inventors have been engaged in the manufacturing development and design experience of related products for many years, and after detailed design and careful evaluation of the above objectives, the present invention has finally become practical.

The technical problem to be solved by the present invention is to provide an elastic member structure and a molding method for bidirectionally switching a ratchet wrench in view of the above-mentioned shortcomings existing in the prior art.

An elastic member structure and a molding method for bidirectionally switching a ratchet wrench, comprising a stamped and formed T-shaped metal plate body, the metal plate body having a longitudinal plate portion and a transverse plate portion, the longitudinal plate portion being connected to the transverse plate portion The portion is formed into a bent portion, and the horizontal plate portion is recessed to form a dodging portion with respect to both sides of the bent portion. When forming, the longitudinal plate portion and the transverse plate portion are first bent perpendicularly to each other, and then The longitudinal plate portion is bent back and forth to form a continuous S-shape to form a elastic piece, and the end of the elastic piece is formed into a planar abutting portion, and finally the two sides of the horizontal wide plate are respectively bent toward the longitudinal plate portion. The front end is formed into a U-shaped head end, and the two sides are opposite to each other and are opposite to the longitudinal plate portion The side is formed to form a second limiting side plate, and the above-mentioned forming step is used to form an elastic member, especially an elastic member applied to the two-way switching of the ratchet wrench.

Compared with the effects of the prior art: (1) The elastic member is integrally formed with a T-shaped metal plate body and has a spring piece and a U-shaped head end, wherein the elastic piece is in a continuous S shape, which greatly improves the elastic effect, and The U-shaped head end is directly formed on one end of the elastic piece, which not only can greatly reduce the structural processing time, saves materials and costs, but also allows the elastic member to be fast and convenient when mounted on the ratchet wrench. The installation and positioning of the ground has the structural composition efficiency, which in turn contributes to the improvement of economic benefits.

(2) The U-shaped head end is wrapped on one side of the elastic piece, and the U-shaped head end is bent and formed by the transverse plate portion. When the elastic member and the ratchet wrench are installed, the U-shaped can be greatly improved. The contact area between the head end and the tooth making surface forms the surface and surface covering effect, so that the elastic member can surely push the top tooth to increase the tooth displacement or the stability and accuracy of the meshing ratchet.

(3) The U-shaped head end extends the finite side plate on both sides and depends on both sides of the elastic piece to increase the reinforcing effect of the side of the elastic piece, and when the elastic piece is disposed in the groove of the cutting control, the two limit position The side plate is also accommodated in the groove at the same time, so that when the elastic member is switched with the cutting control, the side plate of the side edge can be pushed against the cutting control by the second side plate, and the synchronous displacement effect is achieved, and the elastic piece is avoided. It is deformed by extrusion to improve the service life of the elastic member.

〔this invention〕

1‧‧‧Metal plate

101‧‧‧ longitudinal board

102‧‧‧ Horizontal board

10‧‧‧Flexible parts

11‧‧‧Shrap

111‧‧‧Abutment

12‧‧‧U-shaped head

13‧‧‧Limited side panels

20‧‧‧ Ratchet Wrench

21‧‧‧Working Department

211‧‧‧Circular pocket

212‧‧‧ ring groove

213‧‧‧C-ring

214‧‧‧Arc chamber

215‧‧‧With slot

216‧‧‧ openings

22‧‧‧ handle

23‧‧‧ Ratchet

24‧‧‧ teeth

241‧‧‧ arc recess

242‧‧‧stop wall

25‧‧‧ Cut control

251‧‧‧ Axis column

252‧‧‧Limited Board

253‧‧‧ Groove

254‧‧‧ dial

[study]

30‧‧‧ wrench

31‧‧‧First chamber

32‧‧‧Second trough room

40‧‧‧Rotating parts

41‧‧‧ tooth ring

50‧‧‧ ratchet parts

51‧‧‧ curved surface

60‧‧‧Control block

61‧‧‧ jack

62‧‧‧ Spring

63‧‧‧

Fig. 1 is a schematic view showing a T-shaped metal plate body of the present invention.

Fig. 2 is a continuous schematic view (1) of the bending process of the T-shaped metal plate body of the present invention.

Fig. 3 is a continuous schematic view of the bending process of the T-shaped metal plate body of the present invention (2).

Fig. 4 is a continuous schematic view (3) of the bending process of the T-shaped metal plate body of the present invention.

Fig. 5 is a schematic view showing the bending of the T-shaped metal plate body of the present invention to form an elastic member.

Figure 6 is an exploded view of the elastic member of the present invention assembled to a ratchet wrench.

Figure 7 is a bottom view of the assembly of the present invention.

Figure 8 is a cross-sectional view showing the assembly of the present invention.

Fig. 9 is a schematic view showing the application of the elastic member of the present invention to other sizes of teeth.

Fig. 10 is a sectional view showing the combination of the elastic member of the present invention applied to other sizes.

Fig. 11 is a schematic view showing the clockwise rotation locking in the actual use of the present invention.

Fig. 12 is a schematic view showing the counterclockwise rotation loosening in actual use of the present invention.

Figure 13: A schematic diagram of the prior art.

In order to enable your review committee to have a better understanding and understanding of the purpose, features and effects of the present invention, please refer to the following [simplified description of the drawings] as follows: First, please refer to Figures 1 to 5, An elastic member structure and a molding method for a two-way switching of a ratchet wrench, comprising a stamped and formed T-shaped metal plate body 1 having a longitudinal plate portion 101 and a transverse plate portion 102, which are formed when first formed The longitudinal plate portion 101 and the transverse plate portion 102 are bent perpendicularly to each other, and then the longitudinal plate portion 101 is bent back and forth to form a continuous S-shape to form a resilient piece 11 and the end of the elastic piece is formed into a planar abutting portion. 111. Finally, the two sides of the lateral wide plate 102 are respectively bent toward the longitudinal plate portion 101, so that the front end forms a U-shaped head end 12, and the two sides are opposite to each other and abut against the two sides of the longitudinal plate portion 101 to form two. Limiting the side plate 13 , and the length of the two limiting side plates 13 extends at least to the middle of the elastic piece 11 , and the bending height of the elastic piece 11 is limited by the height of the limiting side plate 13 , and is formed by the above forming step An elastic member 10.

The state of the actual assembly of the structure is continued. Referring to FIG. 5, in conjunction with the sixth, seventh, and eighth embodiments, the elastic member 10 is applied to a two-way switching ratchet wrench 20 having a working portion 21 and a handle. The portion 22 of the tool portion 21 has a circular groove 211 for mounting a ratchet 23, and a ring groove 212 is formed on the inner edge of the opening of the circular groove 211, and a C-ring 213 is used. The ratchet wheel 23 is limited to the cavity 211. An arc-shaped cavity 214 is communicated with the bottom side of the cavity 211 to cooperate with a tooth 24, and one end of the tooth 24 is meshed with the ratchet 23, and the other end is formed. The arcuate recess 241, the through slot 215 is formed by the bottom side of the arc-shaped chamber 241, and the through slot 215 is formed on the side of the working portion 21 to form an opening 216, thereby installing all the controls 25 The cutting control 25 has a shaft column 251 embedded in the through groove 215, and a limiting plate portion 252 is formed outside the opening 216 end, and a side of the axial column 251 facing the arc-shaped chamber 214 is concave. a slot 253 is disposed on the opposite side of the recess 253 of the limiting plate portion 252, and the ratchet structure is formed by the above structure. The elastic member 10 is disposed in the recess 253 of the cutting control 25 by the abutting portion 111 of the elastic piece 11, and the cutting control 25 is inserted into the through slot 215 by the opening 216 as the pivot post 251, and When the elastic member 10 is unstressed, the U-shaped head end 12 protrudes out of the groove 253 and extends to the arc-shaped chamber 241. The tooth 24 is mounted in the arc-shaped chamber 241 and is arc-shaped. The recessed portion 241 abuts against the U-shaped head end 12 of the elastic member 10. The ratchet 23 is received in the receiving slot 211, and the ratchet 23 is restricted in the receiving slot 211 through a C-ring 213. To complete a two-way ratchet structure.

Moreover, when the elastic member 10 is applied to the thicker tooth 24, as shown in FIGS. 9 and 10, the concave arc portion 241 of the tooth 24 forms a stopper wall 242 on one side. The U-shaped head end 12 of the elastic member 10 abuts against the concave arc portion 241, and is further restricted by the blocking wall 242 to improve the stability of the elastic member 10 and the toothing 24 to ensure the elastic member 10 and the toothing 24 Applicability, adding the practicality of the elastic member 10.

When the structure is used, please refer to FIG. 11 again, the ratchet wrench 20 is cut through the cutting control 25 in the left-right direction, and the interlocking elastic member 10 is pressed against the ratchet 24 to engage the ratchet 23 to make the ratchet 23 and the system. The teeth 24 form a single-direction rotary snap-fit. When the ratchet wrench 20 is rotated in the other direction, the idler is relaxed. Please refer to the figure as shown in the figure, which is to cut the control 25 to the right to form a clockwise offset. In the state, when the ratchet wrench 20 is used for clockwise rotation, the tooth 24 is slanted against the ratchet wheel 23 and abuts against a side wall of the arc-shaped chamber 241, thereby turning the nut or bolt to achieve the locking effect, and further the ratchet wrench When the counterclock is rotated, the tooth 24 is pushed by the ratchet 23 and elastically contracted through the elastic member 10 to achieve the idling effect, that is, the unidirectional overrun operation achieves the function of locking the nut or the bolt; Referring to FIG. 12, the cutting control 25 is cut to the left to form a state of reverse clocking. When the ratchet wrench 20 is rotated counterclockwise, the tooth 24 is placed against the ratchet 23 and abuts against the arc. The other side wall of the chamber 241 is thereby rotated by a nut or bolt The loosening effect, when the ratchet wrench 20 is further rotated clockwise, the toothing 24 is pushed by the ratchet 23 and elastically contracted through the elastic member 10 to achieve the idling effect, that is, the one-way upward operation reaches the locking screw nut or The effect of bolts.

According to the structure of the above specific embodiment, the following benefits can be obtained: (1) The elastic member 10 is integrally formed with a T-shaped metal plate body 1 and has a resilient piece 11 and a U-shaped head end 12, wherein the elastic piece 11 is formed. The utility model has a continuous S shape, which greatly improves the elastic effect, and the U-shaped head end 12 is directly formed on one end of the elastic piece 11, which not only can greatly reduce the structural processing time, saves materials and costs, and on the other hand, the elastic member is required. When the ratchet wrench 20 is installed, the elastic member 10 can be quickly and conveniently installed and positioned, and has the structural composition efficiency, thereby contributing to the economic benefit.

(2) The U-shaped head end 12 is wrapped on one side of the elastic piece 11, and the U-shaped head end 12 is bent and formed by the transverse plate portion 102 to greatly increase the contact between the U-shaped head end 12 and the tooth 24 The area is formed by the surface and surface coating effect, so that the elastic member 20 can surely push the tooth 24 and increase the displacement of the tooth 24 Or the stability and accuracy of the meshing ratchet 23.

(3) The U-shaped head end 12 further extends the limited side panel 13 and the two sides of the elastic piece 11 to increase the reinforcing effect of the side of the elastic piece 11, and when the elastic member 10 is matched with the groove 253 of the cutting control 25 The second limiting side plate 13 is simultaneously received in the recess 253, so that when the elastic member 10 is switched with the cutting control 25, the side limiting plate 13 can be abutted by the cutting control 25 Pushing, the effect of the synchronous displacement is indeed achieved, and at the same time, the elastic piece 11 is prevented from being deformed by deformation, and the service life of the elastic member 10 is improved.

In summary, the present invention has indeed achieved a breakthrough structural design, and has improved invention content, and at the same time, can achieve industrial utilization and progress, and the present invention is not found in any publication, but also novel, when In accordance with the provisions of the relevant laws and regulations of the Patent Law, the application for invention patents is filed according to law, and the examination authority of the bureau is required to grant legal patent rights.

The above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto; that is, the equivalent variations and modifications made by the scope of the present invention should still belong to the present invention. Within the scope of the patent.

10‧‧‧Flexible parts

11‧‧‧Shrap

111‧‧‧Abutment

12‧‧‧U-shaped head

13‧‧‧Limited side panels

20‧‧‧ Ratchet Wrench

21‧‧‧Working Department

211‧‧‧Circular pocket

212‧‧‧ ring groove

213‧‧‧C-ring

214‧‧‧Arc chamber

215‧‧‧With slot

216‧‧‧ openings

22‧‧‧ handle

23‧‧‧ Ratchet

24‧‧‧ teeth

241‧‧‧ arc recess

25‧‧‧ Cut control

251‧‧‧ Axis column

252‧‧‧Limited Board

253‧‧‧ Groove

254‧‧‧ dial

Claims (4)

An elastic member structure for bidirectionally switching a ratchet wrench includes an elastic member which is formed by bending a T-shaped metal plate body and has a continuous S-shaped elastic piece, and the end of the elastic piece forms a planar abutment And a front end of the U-shaped head end is integrally formed with a U-shaped head end, the two sides of the U-shaped head end are attached to the sides of the elastic piece and have two symmetrical lateral side plates, and the length of the two limiting side plates extends at least to the middle of the elastic piece . An elastic member forming method for bidirectionally switching a ratchet wrench, comprising a T-shaped metal plate body having a longitudinal plate portion and a transverse plate portion, firstly bending the longitudinal plate portion and the transverse plate portion perpendicularly to each other, and then longitudinally The plate portion is bent back and forth to form a continuous S-shape to form a spring piece, and finally the two sides of the horizontal wide plate are respectively bent toward the longitudinal plate portion, so that the front end forms a U-shaped head end, and the two sides are opposite to each other. After the longitudinal plate portion is bent, the middle portion is formed to form a second limiting side plate, thereby completing an elastic member. According to the elastic member structure of the ratchet wrench hand-switching according to the first aspect of the patent application, the bending height of the elastic piece is limited by the height of the limiting side plate. According to the elastic member forming method of the two-way switching of the ratchet wrench according to the second aspect of the patent application, the bending height of the elastic piece is limited by the height of the limiting side plate.