TW201819117A - Bidirectionally-switched elastic element structure of ratchet wrench and molding method of the same comprising an elastic element which can be rapidly and conveniently mounted and located - Google Patents

Abstract

This invention provides a bidirectionally-switched elastic element structure of a ratchet wrench, which comprises an elastic element; the elastic element is a continuous S-shaped elastic sheet formed by bending a T-shaped metal plate body; a planar abutting part is formed at the tail end of the elastic sheet, and a U-shaped head end is integrally formed at the front end of the elastic sheet; and two sides of the U-shaped head end are abutted against two sides of the elastic sheet and are provided with two symmetric limiting side plates extending to the middle section of the elastic sheet at least, and therefore, not only is the process time of the elastic element structure greatly shortened, but also the material consumption and cost are reduced, on the other hand, when being to be mounted on the ratchet wrench, the elastic element can be rapidly and conveniently mounted and located, meanwhile, the structural assembling efficiency can be increased, and furthermore, the economic benefit can be favorably increased.

Description

   Elastic member structure and forming method for ratchet wrench bidirectional switching   

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

According to a conventional ratchet wrench structure, please see from 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 wrench 30 end, thereby pulling the nut Or bolts are used for locking and unscrewing operations, and a ring gear 41 is provided on the outer edge of the rotating member 40, and one side of the ring gear 41 correspondingly engages a ratchet member 50, and the ratchet member 50 can move on the wrench 30 The first slot chamber 31 inside, and the ratchet member 50 is formed with an arc surface 51 on the other end surface of the toothed rotation member 40, and the wrench 30 communicates with the second slot chamber 32 at the first slot chamber 31. The second tank 32 is provided with a control block 60, and the control block 60 is provided with a jack 61, and a spring 62 is installed at the jack 61, and an abutment 63 is sleeved on the top of the spring 62 to make the abutment. 63 is pushed by the spring 62 and abuts against the arc surface 51 of the ratchet member 50. The control block 60 controls the sleeve 63 to select the ratchet member 50 to be set on different sides of the first slot chamber 31. Pull the effect toward the drive.

Looking at the above-mentioned conventional structure, it is not difficult to notice that there are still some shortcomings. The main reasons are as follows: (1) The spring 62 and the abutment 63 are sandwiched between the ratchet member 50 and the control block 60, and the One end of the abutment sleeve 63 is pushed by the spring 62, and the other end of the abutment sleeve 63 is slid against the arc surface 51 of the ratchet member 50. When the ratchet member 50 is pulled on the wrench 30 to generate vibration or switch on the control block 60 At this time, one end of the sleeve 63 slides on the arc surface 51 of the ratchet member 50, and the other end rubs laterally on the socket 61 of the control block 60, so that the sleeve 63 and the spring 62 are easily ejected or generated from the socket 61. Deformation, which will form resistance and reduce its operational stability, and obviously has the problem of insufficient structural strength.

(2) The assembling steps of the wrench 30 are to first install the control block 60 in the second tank chamber 32, and then perform the fastening and fixing of the control block 60 to restrict the control block 60 to only rotate operation, and then further The spring 62 is inserted into the insertion hole 61 at the end of the first slot chamber 31, and the abutment sleeve 63 is sleeved on the top of the spring 62. Since the opening of the first slot chamber 31 faces the direction of the rotating member 40, it is not easy to install the spring 62 Moreover, the volumes of the spring 62 and the abutment sleeve 63 are relatively small, which is easy to be dropped or lost during the assembly process, and it will further increase the difficulty of assembly, making it difficult to assemble and the lack of too many components.

In view of this, the present inventors have engaged in the manufacturing, development and design of related products for many years. After careful design and careful evaluation of the above-mentioned goals, they finally have a practical invention.

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

An elastic piece structure and forming method for two-way switching of a ratchet wrench, comprising a stamped T-shaped metal plate body, the metal plate body having a longitudinal plate portion and a transverse plate portion, the longitudinal plate portion being in contact with the transverse plate portion The system is retracted to form a bent portion, and the lateral plate portion is recessed on both sides with respect to the bent portion to form a dodging portion. When molding, firstly, the longitudinal plate portion and the transverse plate portion are bent perpendicular to each other, and then The longitudinal plate portion is folded back and forth to form a continuous S shape to form an elastic piece, and the ends of the elastic piece form a flat abutment portion. 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 and lean to the two sides of the longitudinal plate portion to form two limit side plates. Through the above molding steps, an elastic member is formed, especially a ratchet wrench. Two-way switching elastic parts.

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

(2) The U-shaped head end is covered on one side of the elastic piece, and the U-shaped head end is formed by bending a transverse plate portion. When the elastic member is installed with a ratchet wrench, the U-shape can be greatly improved. The contact area between the head and the teeth makes the surface-to-surface contact effect, so that the elastic member can indeed push the teeth, increase the displacement of the teeth or the stability and accuracy of the ratchet.

(3) The two sides of the U-shaped head end further extend the limited side plate and lean on both sides of the elastic sheet to increase the reinforcing effect of the elastic sheet side, and when the elastic member cooperates with the groove of the cutting control, the two limit positions 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 can be pushed by the cutting control with the two sides of the limit position, and the effect of synchronous displacement is indeed achieved, while avoiding shrapnel. Deformed by compression to improve the service life of the elastic member.

〔this invention〕

1‧‧‧ metal plate body

101‧‧‧Vertical plate section

102‧‧‧Horizontal plate section

10‧‧‧ Elastic

11‧‧‧ shrapnel

111‧‧‧Abutting Department

12‧‧‧U-shaped head end

13‧‧‧ limit side plate

20‧‧‧ Ratchet wrench

21‧‧‧Work Department

211‧‧‧round container

212‧‧‧Ring groove

213‧‧‧C ring

214‧‧‧Arc-shaped room

215‧‧‧through slot

216‧‧‧ opening

22‧‧‧ handle

23‧‧‧ Ratchet

24‧‧‧ Tooth

241‧‧‧arc recess

242‧‧‧stop wall

25‧‧‧ Cut Control

251‧‧‧mandrel

252‧‧‧Limiting Board Department

253‧‧‧Groove

254‧‧‧Dial button

[Learning]

30‧‧‧ wrench

31‧‧‧The first tank

32‧‧‧Second tank

40‧‧‧rotating parts

41‧‧‧Gear ring

50‧‧‧ Ratchet

51‧‧‧arc surface

60‧‧‧Control Block

61‧‧‧jack

62‧‧‧Spring

63‧‧‧arrive

Figure 1: This is a schematic view of the T-shaped metal plate body of the present invention.

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

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

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

FIG. 5 is a schematic diagram of an elastic member formed by bending a T-shaped metal plate body according to the present invention.

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

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

FIG. 8 is a sectional view of the assembly of the present invention.

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

FIG. 10 is a cross-sectional view of the elastic member of the present invention applied to other sizes.

FIG. 11 is a schematic diagram of clockwise rotation and locking when the invention is actually used.

FIG. 12 is a schematic diagram of loosening by counterclockwise rotation during actual use of the present invention.

Figure 13: It is a conventional schematic diagram.

In order for your reviewers to have a better understanding and understanding of the purpose, features and effects of the present invention, the following are detailed below with the help of [Simplified Description of the Drawings]: First, please refer to Figures 1 to 5, An elastic piece structure and forming method for ratchet wrench bidirectional switching, which includes a stamped T-shaped metal plate body 1 having a longitudinal plate portion 101 and a transverse plate portion 102. The vertical plate portion 101 and the horizontal plate portion 102 are bent perpendicular to each other, and then the vertical plate portion 101 is folded back and forth to form a continuous S-shape to form an elastic piece 11 and the ends of the elastic piece form a flat abutting portion. 111. Finally, the two sides of the horizontal wide plate 102 are respectively bent in the direction of the longitudinal plate portion 101, so that the front end forms a U-shaped head end 12, and the two sides are opposite and lean to the sides of the longitudinal plate portion 101 to form two The limiting side plates 13 and the length of the two limiting side plates 13 extend at least to the middle of the elastic piece 11, and the bending height of the elastic pieces 11 is limited by the height of the limiting side plate 13. Through the above molding steps, the structure An elastic member 10.

The state of the actual assembly of the structure is shown in FIG. 5 and shown in FIGS. 6, 7 and 8. The elastic member 10 is applied to a two-way switching ratchet wrench 20. The ratchet wrench 20 has a working portion 21 and a handle. Part 22, the tool part 21 has a penetrating circular receiving groove 211 for mounting a ratchet wheel 23, and a ring groove 212 is provided on the inner edge of the opening of one side of the circular receiving groove 211. The ratchet wheel 23 is confined in the receiving groove 211. An arc-shaped receiving chamber 214 is connected through the bottom side of the receiving groove 211 to cooperate with a tooth 24. One end of the tooth 24 is meshed with the ratchet 23, and the other end forms a The arc recessed portion 241 is a through slot 215 formed by the bottom side of the arc-shaped receiving chamber 241 penetrating downward, and the through slot 215 is formed through an opening 216 to the side of the working portion 21 to install all controls 25 The cutting control 25 has an axis post 251 embedded in the through slot 215, and a limit plate portion 252 is formed outside the end of the opening 216, and one side of the axis post 251 faces a curved accommodation chamber 214 and is provided with a recess. The groove 253 is provided with a knob 254 on the opposite extension side of the limiting plate portion 252 from the groove 253. With the above structure, the ratchet structure During the installation, the elastic member 10 is placed in the groove 253 of the cutting control member 25 with the abutting portion 111 of the elastic sheet 11, and then the cutting control member 25 is inserted into the insertion slot 215 through the opening 216 by the shaft post 251, and When the elastic member 10 is not stressed, its U-shaped head end 12 projects out of the groove 253 and extends to the arc-shaped accommodation chamber 241. The teeth 24 are installed in the arc-shaped accommodation chamber 241 and arc-shaped. The recessed portion 241 abuts the U-shaped head end 12 of the elastic member 10, and the ratchet 23 is housed in the receiving groove 211, and the ratchet 23 is restricted in the receiving groove 211 through a C-ring 213. With the above structure, 俾To complete a two-way ratchet structure.

In addition, when the elastic member 10 is applied to a thick tooth-making tooth 24, please refer to FIGS. 9 and 10 again. The concave arc portion 241 of the tooth-making tooth 24 forms a stop wall 242 on one side, so that the The U-shaped head end 12 of the elastic member 10 abuts against the concave arc portion 241 and is restricted by the stop wall 242 to improve the stability of the cooperation between the elastic member 10 and the tooth-making 24 to ensure the elastic member 10 and the tooth-making 24 The applicability increases the practicality of the elastic member 10.

When the structure is used, please refer to FIG. 11 again. The ratchet wrench 20 is controlled by the cutting control 25 in the left-right direction, and the elastic member 10 is abutted against the engaging teeth 24 and the ratchet 23 to engage the limit position, so that the ratchet 23 and the ratchet 23 The tooth 24 forms a one-way rotation and bite fixation. When the ratchet wrench 20 is rotated in the other direction, it loosens to form an idling. Please also refer to the figure at the same time. It is to control the control 25 to the right to form a clockwise resistance. In the state, when the ratchet wrench 20 is rotated clockwise for use, the teeth 24 俾 abut against the ratchet 23 and abut a side wall of the arc-shaped accommodation chamber 241, thereby turning the nut or bolt to achieve a locking effect, and further the ratchet wrench 20 When rotating counterclockwise, the teeth 24 will be pushed by the ratchet wheel 23, and achieve the idling effect by elastically retracting the elastic member 10, that is, it has the effect of one-way overturn operation to lock the nut or bolt; otherwise, please Referring to FIG. 12, it is a state where the control 25 is cut to the left to form a counterclockwise resisting state. When the ratchet wrench 20 is rotated counterclockwise for use, the teeth 24 abut against the ratchet 23 and abut against the arc. The other side of the chamber 241 by which the nut or bolt is turned Loosening effect, when the ratchet wrench 20 is further rotated clockwise, the tooth-making tooth 24 will be pushed by the ratchet 23 and elastically retracted by the elastic member 10 to achieve the idling effect, that is, it has a one-way overturn operation to lock the loosening nut or The effect of bolts.

By virtue of the structure of the above specific embodiment, the following benefits can be obtained: (1) The elastic member 10 is formed by bending a T-shaped metal plate body 1 and integrally formed with an elastic piece 11 and a U-shaped head end 12, wherein the elastic piece 11 It is a continuous S-shape, which greatly improves the elastic effect. The U-shaped head end 12 is directly formed on one end of the elastic piece 11, which can not only greatly reduce the structural process time, save materials and costs, but also want to use the elastic piece. When the 10 is installed on the ratchet wrench 20, the elastic member 10 can be quickly and conveniently installed and positioned, and has both the structural composition efficiency and the economic benefit.

(2) The U-shaped head end 12 is coated 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, which greatly improves the contact between the U-shaped head end 12 and the teeth 24. The area also forms a surface-to-surface overlay effect, so that the elastic member 20 can indeed push the teeth 24, increase the displacement of the teeth 24, or the stability and accuracy of the ratchet 23.

(3) The two sides of the U-shaped head end 12 further extend the limiting side plate 13 and lean against the two sides of the elastic sheet 11 to increase the reinforcing effect of the elastic sheet 11 side, and when the elastic member 10 cooperates with the groove 253 of the cutting control 25 At this time, the two limiting side plates 13 are simultaneously accommodated in the grooves 253, so that when the elastic member 10 is rotated with the cutting control 25, the two limiting side plates 13 can be abutted by the cutting control 25. Pushing does achieve the effect of synchronous displacement, and at the same time avoids the elastic sheet 11 from being deformed by being squeezed, which improves the service life of the elastic member 10.

To sum up, the present invention has indeed achieved a breakthrough structural design, with improved content of the invention, and at the same time, it can achieve industrial applicability and progress, and the present invention is not seen in any publications, and it is also novel. In accordance with the relevant provisions of the Patent Law, I filed an application for an invention patent in accordance with the law.

The above is only one of the preferred embodiments of the present invention. When it cannot be used to limit the scope of the present invention; that is, all equal changes and modifications made in accordance with the scope of the patent application for the present invention should still belong to the present invention. Within the scope of the patent.

Claims (3)

    An elastic piece structure for two-way switching of a ratchet wrench includes an elastic piece. The elastic piece is formed by bending a T-shaped metal plate body and has a continuous S-shaped elastic piece. The ends of the elastic piece form a flat abutment. The front end is integrally formed with a U-shaped head end. The two sides of the U-shaped head end are connected to the two sides of the elastic sheet and are provided with two symmetrical limiting side plates. The length of the two limiting side plates extends at least to the middle of the elastic piece. .         A method for forming an elastic piece of a ratchet wrench with bidirectional switching, comprising a T-shaped metal plate body having a longitudinal plate portion and a transverse plate portion. First, the longitudinal plate portion and the transverse plate portion are bent to be perpendicular to each other, and then the longitudinal direction is changed. The plate is folded back and forth to form a continuous S-shape to form an elastic sheet. Finally, the two sides of the transverse wide plate are respectively bent in the direction of the longitudinal plate, so that the front end forms a U-shaped head, and the two sides are opposite to each other. An elastic member is completed at the middle section after the longitudinal plate portion is bent to form two limiting side plates.         According to the elastic member forming method of the ratchet wrench in two-way switching described in the scope of the patent application, the bending height of the elastic piece is limited to the height of the limiting side plate.