TW201434593A - Changing-over ratchet wrench - Google Patents

Abstract

A changing-over ratchet wrench comprises a wrench main body, a control member, a ratchet member and a rotary member. The wrench main body is formed with a ratchet portion which has an action opening and a circular hole with a ratchet slot communicating in between. The control member is extended with a stem body from an end of a circular disc while the other end is formed with a block body. The top of the block body is formed with a U-shaped seat for mounting a spring, and a position limiting is recessed between the circular disc and the U-shaped seat. The control member is disposed in the circular hole, and the U-shaped seat of the control member faces the ratchet slot. One end of the ratchet member is formed with arc teeth while the other end is disposed with a position limiting portion which is protruded with a circular post. The ratchet member is disposed in the ratchet slot, and the position limiting portion is accommodated in the position limiting notch with the circular post resisting against the spring. The rotary member is assembled at the action opening of the wrench main body and meshed with the arc teeth of the ratchet member. With the foregoing structures, it has the efficacies of stable operation and increased structural strength.

Description

Reversing ratchet wrench

The invention relates to a ratchet wrench structure, in particular to a reversing ratchet wrench with increased structural strength, simplified structure and stable operation efficiency.

According to a conventional ratchet wrench structure, as shown in FIG. 9, the wrench (50) is assembled with a rotating member (60) at one end, and the rotating member (60) can be performed at the end of the wrench (50). Rotating, thereby pulling the nut or bolt to lock and unscrew, and the outer edge of the rotating member (60) is provided with a ring gear (61), and the tooth ring (61) has a corresponding tooth on one side. a ratchet member (70), the ratchet member (70) being movable to the first groove chamber (51) inside the wrench (50), and the ratchet member (70) being formed on the other end surface of the toothed rotating member (60) There is a curved surface (71), and the wrench (50) communicates with the second trough chamber (52) at the first trough chamber (51), and the second trough chamber (52) is provided with a control block (80). The control block (80) defines a jack (81), and a spring (82) is mounted on the jack (81), and a sleeve (83) is sleeved on the top end of the spring (82) to make the sleeve (83) being pushed by the spring (82) against the arc surface (71) of the ratchet member (70), and the control sleeve (80) controls the abutment (83) to select the ratchet member (70) to be placed on the The different sides of the first tank chamber (51) can produce a pulling effect with a one-way drive.

Looking at the above-mentioned conventional structure is not difficult to find that there are still some shortcomings. The main reasons are as follows:

(1) A spring (82) and a sleeve (83) are interposed between the ratchet member (70) and the control block (80), and one end of the abutting sleeve (83) is pushed by the spring (82), and The other end of the sleeve (83) slides against the curved surface (71) of the ratchet member (70), and the ratchet member (70) is shaken by the wrench (50) to generate vibration or switch to the control block (80). At the same time, one end of the abutting sleeve (83) slides on the arc surface (71) of the ratchet member (70), and the other end will be laterally rubbed on the insertion hole (81) of the control block (80) to make the abutment sleeve (83) The spring (82) is easily ejected or deformed by the insertion hole (81), and resistance is formed to lower its operational stability, and there is a clear problem of insufficient structural strength.

(2) The assembly step of the wrench (50) is to first install the control block (80) at the second tank chamber (52), and firstly perform the fastening and fixing of the control block (80), and limit the control block (80). Only the rotation operation can be performed, and the spring (82) is further placed into the insertion hole (81) by the first groove chamber (51) end, and the abutment sleeve (83) is sleeved on the top end of the spring (82). The opening of one of the slots (51) faces the rotating member (60), and the movement of the mounting spring (82) is not easy, and the volume of the spring (82) and the abutting sleeve (83) is small, which is easy to occur in the assembly process. In the case of falling or losing, it will further increase the difficulty of assembly, making it difficult to assemble and the lack of components.

(3) The spring (82) and the abutting sleeve (83) are interposed between the ratchet member (70) and the control block (80), and one end of the abutting sleeve (83) is pushed by the spring (82). The other end of the sleeve (83) is slidably pressed against the arc surface (71) of the ratchet member (70). When the ratchet member (70) is actuated, the abutment sleeve (83) can push the spring (82) to expand and contract. Therefore, the movable space of the ratchet member (70) will be maintained between the ratchet member (70) and the control block (80), so that the abutting sleeve (83) and the spring (82) protrude excessively beyond the insertion hole (81). It will reduce the positioning effect of the sleeve (83) and the spring (82).

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 a reversing ratchet wrench for the above-mentioned shortcomings existing in the prior art.

A ratchet portion has a ratchet portion formed at one end thereof, the ratchet portion defines an actuating opening and a circular hole, and an arcuate ratchet groove is communicated between the actuating port and the circular hole, and the ratchet portion defines a fixing groove at the inner edge of the actuating opening, The control member has a handle extending from one disc portion to one end, and the other end of the disc portion is formed with a body, a U-shaped seat is formed at the top end of the block body, and a spring is mounted on the U-shaped seat. A limiting notch is defined between the portion and the U-shaped seat, and the control member is mounted on the round hole of the wrench body to form an exposed shape, and the U-shaped seat and the limiting notch of the control member face the ratchet groove In addition, the control member has a positioning hole in the same direction at the opening of the U-shaped seat, and the spring is received through the positioning hole, thereby forming a spring positioning effect, and a ratchet member is formed with a curved tooth at one end and convex at the other end. a limiting portion is arranged, and the limiting portion protrudes with a cylinder, and the limiting portion of the ratchet member and the cylindrical system can be fixed by an integral molding manner or an insertion manner, the ratchet The component is mounted in the ratchet groove of the wrench body, so that the curved tooth of the ratchet member faces the actuating port, and the limiting portion is received in the limiting notch of the control member, and the cylinder is pressed against the spring of the control member. Wherein, the U-shaped seat forms an arc surface on both outer edges of the spring, and the ratchet member forms an arc-shaped space adjacent to the cylinder, and the arcing surface cooperates with the arc surface to form the dodging effect of the ratchet member and the U-shaped seat. a rotating member is assembled at the operating opening of the wrench body, the outer edge of the rotating member is recessed with a ring groove, and a C-shaped fastener is fitted into the ring groove, and is elastically coupled to the actuating port by the C-shaped fastener. The fixing groove and the outer edge of the rotating member are formed with a ring gear, and the ring gear is engaged with the curved teeth of the ratchet member.

A first main object of the present invention is that the ratchet member is fixed with a cylinder at the limiting portion, and is pressed by the cylinder against one end of the spring, thereby forming a linkage between the ratchet member and the control member, and the two sides of the spring are The U-shaped part is completely blocked, so that when the control member performs the switching operation, the spring does not have a deformation or pop-out failure condition due to the lateral thrust, thereby having the functions of stable operation and increased structural strength, thereby improving durability. Sex.

A second main object of the present invention is that the control member is directly inserted with a spring at the positioning hole, and is disposed on the two sides of the spring by the U-shaped portion, that is, the block end of the control member can be directly placed into the wrench body. The round hole is inserted into the ratchet groove at the end of the actuating port, and the limiting portion of the ratchet member is inserted into the limiting notch of the control member, and the cylinder is pressed against the other end of the spring, which can be easily completed. The assembly step of the wrench body has the practical effect of simplifying the structure and quick combination.

A third main object of the present invention is that the U-shaped seat is formed with a curved surface on both outer edges of the spring, and the ratchet member forms an arc-shaped space adjacent to the cylinder, and the arc-shaped space is formed by the curved space to form the ratchet member. The dodging effect of the U-shaped seat can shorten the distance between the ratchet member and the control member, so that the U-shaped portion can be disposed on both sides of the cylinder to improve the positioning effect of the ratchet member.

Other objects, advantages and novel features of the invention will be apparent from the description and appended claims.

[this creation]

(10)‧‧‧Wrench body

(11)‧‧‧ratchet

(12) ‧‧‧ actuation

(121) ‧ ‧ fixed slot

(13) ‧‧‧ round holes

(14)‧‧‧ ratchet slots

(20)‧‧‧Controls

(21)‧‧‧Disc

(22) ‧‧‧ handle body

(23)‧‧‧ Block

(24)‧‧‧U-shaped seat

(241)‧‧‧Positioning holes

(242)‧‧‧Arc face

(25) ‧ ‧ spring

(26) ‧ ‧ Limit gap

(30)‧‧‧ ratchet parts

(31)‧‧‧Arc teeth

(32) ‧‧‧Limited

(321)‧‧‧Arc space

(33)‧‧‧Cylinder

(40)‧‧‧Rotating parts

(41) ‧‧‧ Ring groove

(42)‧‧‧C-shaped fasteners

(43) ‧‧‧ tooth ring

[study]

(50)‧‧‧ wrench

(51) ‧‧‧First chamber

(52) ‧‧‧Second trough room

(60)‧‧‧Rotating parts

(61)‧‧‧ tooth ring

(70)‧‧‧ ratchet parts

(71)‧‧‧Arc face

(80)‧‧‧Control block

(81)‧‧‧ jack

(82) ‧ ‧ spring

(83) ‧‧‧

Figure 1 is a perspective view of the present invention.

Figure 2 is a perspective exploded view of the present invention.

Figure 3 is a schematic view showing the connection of the ratchet member and the control member of the present invention.

Figure 4 is a cross-sectional view of the present invention.

Fig. 5 is a schematic view (1) of the operation of the control member of the present invention in a clockwise yaw state.

Fig. 6 is a schematic view showing the operation of the control member of the present invention in a clockwise state (2).

Fig. 7 is a schematic view showing the operation of the control member of the present invention in a counterclockwise state (1).

Fig. 8 is a schematic view showing the operation of the control member of the present invention in a counterclockwise state (2).

Figure 9 is a cross-sectional view of a conventional ratchet wrench.

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 [detailed description of the drawings] as follows: First, please refer to Figure 1, Figure 2 and Section 3. As shown in the figure, a reversing ratchet wrench includes: a wrench body (10), a control member (20), a ratchet member (30) and a rotating member (40), a wrench body (10) A ratchet portion (11) is formed at one end, the ratchet portion (11) defines an operating opening (12) and a circular hole (13), and an arc-shaped ratchet groove is communicated between the operating opening (12) and the circular hole (13). 14), the ratchet portion (11) defines a fixing groove (121) at an inner edge of the actuating opening (12), and a control member (20) extends from a disc portion (21) to a distal end with a handle body (22). And the other end of the disc portion (21) is formed with a body (23), a U-shaped seat (24) is formed at the top end of the block body (23), and a spring (25) is mounted at the U-shaped seat (24). a limiting notch (26) is recessed between the disc portion (21) and the U-shaped seat (24), and the control member (20) is mounted on the circular hole (13) of the wrench body (10). And the handle body (22) is exposed, and the U-shaped seat (24) and the limit of the control member (20) The mouth (26) faces the ratchet groove (14), and the control member (20) defines a positioning hole (241) in the same direction at the opening of the U-shaped seat (24), and accommodates the spring (25) through the positioning hole (241). One end, thereby forming a positioning effect of the spring (25), a ratchet member (30) is formed with a curved tooth (31) at one end, and a limiting portion (32) is protruded at the other end, and the limiting portion (32) a cylindrical portion (33) is protruded, and the limiting portion (32) and the cylindrical portion (33) of the ratchet member (30) can be fixed by integral molding or insertion, and the ratchet member (30) is mounted In the ratchet groove (14) of the wrench body (10), the curved teeth (31) of the ratchet member (30) are oriented toward the actuation port (12), and the limiting portion (32) is received in the control member (20) a limit notch (26), and the cylinder (33) is pressed against the spring (25) of the control member (20), wherein the U-shaped seat (24) is formed on both outer edges of the spring (25) a curved surface (242), the ratchet member (30) is formed with an arcuate space (321) adjacent to the cylinder (33), and the arcuate surface (242) is formed by the curved space (321) to form the ratchet member (30) and The dodging effect of the U-shaped seat (24), a rotating member (40) is assembled at the actuating opening (12) of the wrench body (10), the rotating member (40) The outer edge is recessed with a ring groove (41), and a C-shaped fastener (42) is fitted to the ring groove (41), and the C-shaped fastener is (42) elastically coupled to the fixing groove (121) of the actuating opening (12), thereby forming a combination of the wrench body (10) and the rotating member (40), and the outer edge of the rotating member (40) is formed with a ring gear ( 43), the toothed ring (43) is engaged with the curved teeth (31) of the ratchet member (30).

The combination of the structures is further viewed from the second figure to the fifth figure. The control member (20) is provided with a spring (25) at the positioning hole (241) of the U-shaped portion (24) to make the spring (25) slightly protruding from the U-shaped portion (24), placing the end of the block (23) of the control member (20) into the circular hole (13) of the wrench body (10), so that the handle of the control member (20) (22) disposed outside the wrench body (10), and the U-shaped portion (24), the spring (25) and the limit notch (26) are all facing the ratchet groove (14), and then the ratchet member (30) is provided by the wrench body (10) The position of the actuator (12) is inserted into the ratchet groove (14), and the limiting portion (32) of the ratchet member (30) is disposed at the limit notch (26) of the control member (20), and The cylinder (33) is pressed against one end of the spring (25), so that the spring (25) is sandwiched between the cylinder (33) and the positioning hole (241), and the two sides of the spring (25) are more simultaneously subjected to the U-shaped portion ( 24) The limit position, at this time, the control member (20) is blocked by the limiting portion (32) of the ratchet member (30), so that the control member (20) cannot be taken out from the circular hole (13), and finally the rotating member (40) assembled at the actuating port (12) of the wrench body (10), and elastically assembled by the C-shaped fastener (42) to the ring groove (41) of the rotating member (40) and the actuating port (12) Slot (1 21), thereby forming a combination of the wrench body (10) and the rotating member (40), and engaging the curved teeth (31) of the ratchet member (30) by the ring gear (43) of the rotating member (40), thereby An assembly fit of the wrench body (10) and the ratchet member (30) is formed.

For the actual use, please refer to Figures 5 and 6 in conjunction with Figures 2 and 3. The control member (20) is diagonally opposed by the spring (25) at the U-shaped portion (24). The cylinder (33) of the ratchet member (30) biases the ratchet member (30) to one side of the ratchet groove (14) and is engaged with the rotating member by the curved teeth (31) of the ratchet member (30). The toothed ring (43), in this state, the two ends of the spring (25) are respectively sandwiched by the positioning hole (241) and the cylinder (33), and the two sides of the spring (25) are completely blocked The U-shaped portion (24) is provided, so that when the control member (20) performs the switching operation, the spring (25) does not have a deformation or pop-out failure condition due to the lateral thrust, thereby having the effect of stable operation when controlling When the piece (20) is switched from the handle body (22) to the clockwise direction, rotating the wrench body (10) clockwise can generate a reaction force of the rotating member (40), and the ring gear (43) of the rotating member (40) is Pushing the curved teeth (31) of the ratchet member (30) counterclockwise, pressing the ratchet member (30) against one side of the ratchet groove (14), thereby turning the nut or bolt to create a locking effect, and then When the wrench body (10) is further rotated counterclockwise, the rotating member (40) is reversed. Force the ring (43) of the rotating member (40) to push the curved teeth (31) of the ratchet member (30) clockwise, using the elastic The elasticity of the spring (25) and the hollowing of the ratchet groove (14) on the other side cause the ratchet member (30) to be displaced obliquely toward the end of the control member (20) and to move the cylinder (33) of the ratchet member (30) In the U-shaped portion (24), the separation of the rotating member (40) and the ratchet member (30) is formed, and the ratchet member (30) is again pushed and pulled by the spring (25) to vibrate back and forth, thereby reaching the wrench body (10). The effect of the idling operation is that it has the function of one-way locking nut or bolt. Conversely, when the control member (20) is switched from the handle body (22) to the counterclockwise direction, please refer to the figures 7 and 8 again. Turning the wrench body (10) counterclockwise can cause the rotating member (40) to generate a reaction force, so that the ring gear (43) of the rotating member (40) pushes the curved teeth of the ratchet member (30) clockwise. (31), similarly, the ratchet member (30) is pressed against one side of the ratchet groove (14), thereby forming a loosening effect of the nut or the bolt, and when the wrench body (10) is rotated clockwise, the rotating member The ring gear (43) of (40) pushes the curved teeth (31) of the ratchet member (30) counterclockwise, and the ratchet member is made by the elasticity of the spring (25) and the ratchet groove (14) on the other side. (30) It is inclined to the end of the control member (20), that is, Achieve the effect of one-way loosening nuts or bolts.

With the structure of the above specific embodiment, the following benefits can be obtained: (1) The ratchet member (30) is fixed with a cylinder (33) at the limiting portion (32), and is pressed against the spring by the cylinder (33) ( 25) one end, thereby forming a ratchet member (30) and the control member (20), and the two sides of the spring (25) are completely blocked with a U-shaped portion (24), so that the control member (20) When the switching operation is performed, the spring (25) does not have a deformation or pop-out failure condition due to the lateral thrust, thereby having the effects of stable operation and increased structural strength, thereby improving durability; (2) the control member (20) A spring (25) is directly inserted into the positioning hole (241), and the U-shaped portion (24) is disposed on both sides of the spring (25), that is, the block of the control member (20) can be directly directly The body (23) end is inserted into the round hole (13) of the wrench body (10), and the ratchet member (30) is placed into the ratchet groove (14) at the end of the actuation port (12), limited by the ratchet member (30) The positioning portion (32) is inserted into the limiting notch (26) of the control member (20), and the cylindrical portion (33) is pressed against the other end of the spring (25), so that the assembly step of the wrench body (10) can be easily completed. , with a simplified structure and a quick combination of practical effects; The U-shaped seat (24) is formed with a curved surface (242) on both outer edges of the spring (25), and the ratchet member (30) forms an arcuate space (321) adjacent to the cylinder (33). The curved space (321) cooperates with the curved surface (242) to form the dodging effect of the ratchet member (30) and the U-shaped seat (24), that is, the distance between the ratchet member (30) and the control member (20) can be shortened, so that U The shape portion (24) can be disposed on both sides of the cylinder (33) to improve the positioning effect of the ratchet member (30).

In summary, the present invention has indeed achieved a breakthrough structural design, and has improved invention content, while at the same time achieving industrial utilization and progress, and the present invention is not found in Any publication is also novel. When it complies with the relevant provisions of the Patent Law, it submits an application for a patent for invention according to law, and invites the examination committee of the bureau to grant a legal patent right.

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)‧‧‧Wrench body

(11)‧‧‧ratchet

(12) ‧‧‧ actuation

(121) ‧ ‧ fixed slot

(13) ‧‧‧ round holes

(14)‧‧‧ ratchet slots

(20)‧‧‧Controls

(21)‧‧‧Disc

(22) ‧‧‧ handle body

(23)‧‧‧ Block

(24)‧‧‧U-shaped seat

(241)‧‧‧Positioning holes

(25) ‧ ‧ spring

(30)‧‧‧ ratchet parts

(31)‧‧‧Arc teeth

(32) ‧‧‧Limited

(40)‧‧‧Rotating parts

(41) ‧‧‧ Ring groove

(42)‧‧‧C-shaped fasteners

(43) ‧‧‧ tooth ring

Claims (6)

A reversing ratchet wrench includes a wrench body, a ratchet portion is formed at one end thereof, and an operating opening and a circular hole are defined in the ratchet portion, and an arcuate ratchet groove is communicated between the operating opening and the circular hole. a control member, the control member has a handle extending from one disc portion to one end, and the other end of the disc portion is formed with a body, and a U-shaped seat is formed at the top end of the block body, and is at the U-shaped seat A spring is arranged, and a limiting notch is recessed between the disc portion and the U-shaped seat. The control member is mounted on the round hole of the wrench body to form an exposed shape of the handle body, and the U of the control member is The shape seat and the limit notch face the ratchet groove; a ratchet member, the ratchet member has a curved tooth formed at one end thereof, and a limiting portion is protruded at the other end, and the limiting portion protrudes with a cylinder, and the ratchet member Mounted in the ratchet groove of the wrench body, the curved tooth of the ratchet member faces the actuating port, and the limiting portion is received in the limiting notch of the control member, and is pressed by the cylinder against the spring of the control member; Rotating member, the rotating member is assembled on the wrench body At the mouth, a toothed ring is formed on the outer edge of the rotating member, and the toothed ring is engaged with the curved teeth of the ratchet member. The reversing ratchet wrench according to the first aspect of the invention, wherein the ratchet portion has a fixing groove at an inner edge of the actuating opening, and a ring groove is recessed in an outer edge of the rotating member, and a ring groove is fitted in the ring groove. The C-shaped fastener is elastically coupled to the fixing groove of the actuating opening by the C-shaped fastener, thereby forming a combination of the wrench body and the rotating member. The reversing ratchet wrench according to the first aspect of the invention, wherein the control member has a positioning hole in the same direction at the opening of the U-shaped seat, and the spring end is received through the positioning hole, thereby forming a spring positioning effect. The reversing ratchet wrench according to the first aspect of the invention, wherein the limiting portion of the ratchet member is fixed integrally with the cylindrical system. The reversing ratchet wrench according to the first aspect of the invention, wherein the limiting portion of the ratchet member and the cylindrical portion are fixed by insertion. The reversing ratchet wrench according to claim 1, wherein the U-shaped seat forms a curved surface on both outer edges of the spring, and the ratchet member forms an arc-shaped space adjacent to the cylinder by the arc. The shaped space cooperates with the curved surface to form the dodging effect of the ratchet member and the U-shaped seat.