TWI436862B - Ratchet wrench structure - Google Patents

Description

Ratchet wrench structure

The utility model relates to a ratchet wrench structure, which is in detail to reduce the force exerted by the brake block in the wrench when the wrench is actuated, and to reduce the cost of replacing the inner element or the integral wrench.

According to the hand tools used in construction, repair, disassembly or assembly, the universality is one of the most used hand tools with ratchet wrenches. The components commonly used with ratchet wrenches are mainly screws and screws. It is extremely convenient and easy to use in disassembling and assembling the screw lock. However, there are many types of ratchet wrenches on the market. However, the conventional ratchet wrench has a head end at one end and a ratchet wheel at the head end. The mechanism, the ratchet mechanism is provided with a driving portion for a sleeve or a screw combination, so that the user can apply a reciprocating force by holding the ratchet wrench, and the ratchet mechanism can unidirectionally rotate the driving portion for quick relaxation or locking. The function of the bolt.

However, although the prior art can effectively assist the user to operate and achieve disassembly, assembly, etc., in the internal structure, the brake block in the conventional ratchet wrench is generally designed so as not to cause the ratchet ring to operate. The rotation is not smooth, or the situation of turning and the force is generated. In the design of the brake block that meshes with the ring gear internally, the gear ring can be meshed without being stuck by the wrench body, so the brake block is disposed on the brake block. The main technique is not touched by the trigger body. However, there is a problem in that the toothed ring of the brake block and the ratchet ring In the combined part, the brake ring engaging ring gear in the use state only uses the teeth of one end part to engage the toothed ring. When the screw is disassembled or assembled, there is a gap between the brake block and the trigger body, so the brake is applied. One end of the block meshing ring must bear all the forces. Therefore, under the accumulated use for a long time, it is easy to accelerate the damage of the tooth ring of the brake block and the ratchet ring, and the components must be replaced or the entire set of ratchet wrenches must be replaced. The conventional technology still needs to be improved to conform to the general public.

For another description of the ratchet wrench of another type, please refer to the Republic of China Patent Publication No. I333880 "Improvement of the structure of the two-way ratchet wrench", which relates to a structural improvement of the two-way ratchet wrench, which comprises: a body having a receiving hole, a first receiving groove, a buckle ring, and a first abutting edge; a receiving groove is disposed on one side of the receiving hole, a control groove and a bead groove are disposed in the near receiving groove; and a ratchet wheel is provided with a fitting portion, the ratchet The outer peripheral edge is provided with an annularly arranged bite tooth, and the ratchet wheel is pivotally disposed in the receiving hole; a toothing side is provided with a locking tooth that can mesh with the biting tooth, and the toothing is provided with an arc shape on the other side. a concave curved surface, the left and right sides of the concave curved surface are flanges, and the tooth system is accommodated in the accommodating groove; the control structure comprises: the control element is provided with a hole, and the two sides of the hole are provided a top surface, the top surface is abutted against the flange, the control element is pivotally disposed in the control slot; the front cap and the elastic element are received in the bore, the front cap is attached to the concave arc The cap and the elastic system are accommodated in the bead groove, and the cap is pressed against the concave edge of the control element due to the elastic force of the elastic body on.

The above-mentioned "two-way ratchet wrench structure improvement" is the same as the prior art, and is convenient for the user to operate. However, the "two-way ratchet wrench structure improvement" is also the same as the conventional technique in the absence of the same, and the single-side card-shaped tooth is used. When the ratchet is bitten, the force exerted by the tooth is large. Under long-term use, it is easy to cause the tooth of the tooth and the ratchet to be damaged or worn, further causing the ratchet to be unable to rotate or to be positioned in a single direction, resulting in unnecessary consumption. The overhead replaces the component or the entire set of replacements. Therefore, the "two-way ratchet wrench structure improvement" needs to be improved to suit the public.

In view of the above, the inventors of the present invention have improved the aforementioned "two-way ratchet wrench structure improvement" and the prior art, that the brake block inside the ratchet wrench cannot be effectively stabilized to mesh with the ring gear of the ratchet ring, thereby causing wear of the ring gear and the brake block. Grinding or damage, further need to spend extra cost to replace components or replace the entire set of ratchet wrenches and other missing, therefore, use a lot of time to invest in research related knowledge and methods, and compare the advantages and disadvantages, and carry out research and development of related products, After many experiments and tests, it has finally invented a "ratchet wrench structure" which is to improve the "two-way ratchet wrench structure improvement" and the conventional technology, so that the brake block can firmly engage the ring gear of the ratchet ring to disperse the brake block. The force applied and the rapid wear of the teeth of the ring gear and the brake block.

The main purpose of the invention is to make the wrench abut against the wall of the receiving groove when the wrench is actuated, so as to disperse the force exerted by the brake block, which can be changed. In terms of good knowledge, the brake block is subjected to a large amount of force, and the brake block relies solely on the ring gear of the single-end meshing ratchet ring. When used for a long time, it is easy to cause the brake block and the tooth ring to wear faster. The occurrence of inaccurate or dislocated teeth occurs, which further leads to the loss of unnecessary expenses and cost replacement components.

In order to achieve the purpose and effect of the foregoing creation, the present invention relates to a ratchet wrench structure, which comprises a trigger body, a driving component, a cover member and a steering assembly, wherein: the trigger body end is provided with a through-head end The perforation is further disposed on the inner wall of the perforation, and a receiving groove is recessed toward the end of the trigger body, and one side of the groove wall on both sides of the receiving groove is outwardly opened to form a through opening, and the bottom of the receiving groove is facing the end of the trigger body The recessed groove is provided with an assembly groove for the control member, and the bottom of the assembly groove is provided with a concave positioning groove; the drive assembly comprises a ratchet ring and a brake block, the ratchet ring is installed in the perforation, and the spine The outer peripheral side ring of the ring is provided with a ring tooth portion, and the brake block is disposed in the receiving groove, and each side of the brake block has a bonding surface that abuts against the wall of the receiving groove, and the braking block corresponds to the ratchet ring. The utility model is provided with two engaging teeth which are in mesh with the ring tooth portion and adjacent to each other; the cover member covers the through hole of the perforation and the receiving groove, and the sealing member is provided with an assembly opening of the sheathed ring corresponding to the position of the ratchet ring; The steering assembly includes a dial member, a first elastic member and a second The elastic member is pivotally disposed in the assembly groove, and the corresponding positioning groove of the dialing member is provided with two adjacent notches, and the first elastic member is disposed in the positioning groove and elastically engages one of the notches of the dialing member, and The second elastic member is disposed at the opposite end of the dial member provided with the notch and is biased against the brake block; accordingly, when the ratchet ring mounted on the trigger body is locked or disassembled corresponding to the screw, the ring tooth portion The cycle is engaged with the braking block to engage the rear teeth, and the brake block is attached to the wall of the receiving groove to disperse the force generated when the ratchet ring is actuated.

The ratchet wrench structure of the present invention further includes the following technical features:

1. The brake block is provided with a dial corresponding to the second elastic member, and the second elastic member controls the switching of the brake block by switching of the dial member.

2. One end of the second elastic member is provided with a groove, and one end of the second elastic member is elastically abutted against the bottom of the groove groove, and the other end is abutted against the groove of the brake block by the groove The setting is to prevent the second elastic member from coming off.

3. The first elastic member and the second elastic member each have an elastic portion and a positioning portion. One end of the elastic portion of the first elastic member elastically abuts against the bottom of the positioning groove, and the other end elastically abuts the positioning portion of the first elastic member. The positioning portion of the first elastic member is biased by the spring portion to be engaged with one of the two recesses, and one end of the spring portion of the second elastic member is elastic against the bottom of the groove groove, and the other end is elastically biased against the second elastic member. Positioning portion, and the positioning portion of the second elastic member is biased against the brake by the spring portion Inside the dial of the block.

4. The groove wall of the receiving groove is arc-shaped, and the two sides of the brake block abutting against the groove wall are arc-shaped.

5. A positioning ring groove is recessed in the periphery of the assembly opening of the cover member.

6. The perforated hole wall of the trigger body is further provided with a limit ring groove corresponding to the positioning ring groove, and a clip ring is additionally clamped on the positioning ring groove, and the outer peripheral side of the clip ring is embedded in the limit ring groove.

Therefore, the present invention can be said to be a rather practical and progressive creation, which is quite worthy of promotion by the industry, and is publicized to the public to make its society more progressive.

In order to achieve the above-mentioned brake block inside the stabilizer wrench, and to disperse the force exerted by the brake block, and to improve the conventional force due to the mechanical engagement of the ratchet ring by the brake pad alone, it is easy to cause under long-term use. The wear between the brake block and the ratchet ring is accelerated, which further leads to an inaccurate bite between the brake block and the ratchet ring, or a loss in the case of tooth removal. The present invention relates to a "ratchet wrench structure", and its function and characteristics are described below with reference to a related embodiment.

Referring to the first to third figures, the present invention is a ratchet wrench knot. The structure includes a trigger body 1, a driving assembly 2, a cover member 3 and a steering assembly 4, wherein the front end of the trigger body 1 is provided with a through hole 11 penetrating through the head end, and is located in the through hole 11 The wall is recessed with a receiving groove 12 at the end of the trigger body 1, and one side of the groove wall on both sides of the receiving groove 12 is opened outward to form a through opening 121, and the bottom of the receiving groove 12 is recessed toward the end of the trigger body 1. The assembly slot 13 is provided for the control assembly 4, and the bottom of the assembly slot 13 is provided with a concave positioning slot 14; the drive assembly 2 includes a ratchet ring 21 and a brake block 22, and the ratchet ring 21 is mounted The inner peripheral side ring of the ratchet ring 21 is provided with a ring tooth portion 210, and the brake block 22 is disposed in the receiving groove 12, and each side of the brake block 22 has a groove wall corresponding to the receiving groove 12. The abutting surface 220 is abutted against the abutting surface 220, and the braking block 22 is provided with a second engaging tooth 221 which is engaged with the ring toothing portion 210 and adjacent to the ring gear 21; the cover member 3 is a cover hole 11 and a receiving groove 12 a port 121, and the cover member 3 is provided with an assembly opening 31 for inserting the sleeve ring 21 corresponding to the position of the ratchet ring 21; the steering assembly 4 includes a dial member 41, a first elastic member 42 and a first The two elastic members 43 are disposed in the positioning groove 13 , and the positioning member 14 is disposed in the positioning groove 14 . The first elastic member 42 is disposed in the positioning groove 14 and is elastically biased. One of the notches 410 of the dial member 41, and the second elastic member 43 is disposed at the opposite end of the dial member 41 provided with the recess 410 And the braking block 22 is slid to the brake block 22; accordingly, when the ratchet ring 21 mounted on the trigger body 1 is engaged with the screw to be locked or disassembled, the ring gear portion 210 will be engaged with the brake block 22 to engage in the rear teeth. The brake block 22 abuts against the groove wall of the receiving groove 12 to disperse the force generated when the ratchet ring 21 is actuated, and prevents the meshing of the ring tooth portion 210 and the brake block 22 from being inaccurate or dislocated to cause damage. The present invention is a main embodiment of the present invention, but it should be understood that the first to third figures of the present invention have the necessary technical features for implementing the first item of the patent application scope of the present invention. The technical features described in the remaining scope of the patent application are for the detailed description or additional technical features of the first item of the patent application scope, and are not intended to limit the scope of the scope of claim 1 of the patent application. Item 1 does not necessarily have to include the technical features described in the remaining scope of the related patent application).

Please refer to the fourth to fifth figures, and use the second figure as an aid to explain the operation of the control. When the user uses the trigger 1 to lock the screw, the ratchet ring 21 of the wrench 1 is first set and stuck. The screw is further actuated to further swing the end of the trigger body 1 to swing back and forth, and the brake block 22 in the trigger body 1 is caused by the action of the trigger body 1 to engage the engaging teeth 221 at one end of the brake block 22 and the ring tooth portion 210 of the ratchet ring 21 The cycle action of the meshing after meshing is performed to achieve the function of locking the screw; on the contrary, when the screw is to be removed in the reverse direction, the dialing member 41 is switched first. The engaging teeth 221 of the original engaging ring tooth portion 210 of the brake pad 22 are disengaged from the meshing state, and the other end engaging teeth 221 are engaged with the ring tooth portion 210, and the engaging faces 220 on both sides of the braking block 22 are along the switching of the dialing member 41. Since the groove wall of the receiving groove 12 is displaced, the function of removing the screw is further achieved by the brake block 22 switching and changing the portion that meshes with the ring tooth portion 210.

According to the above operation description, the advantages of the present invention are now listed below:

1. According to the main technical features of the present invention, the abutting faces 220 on both sides of the brake block 22 abut against the groove walls of the receiving groove 12 to disperse and reduce the force applied by the braking block 22 when the ratchet ring 21 is actuated. The ring teeth 210 and the engaging teeth 221 of the brake block 22 can smoothly engage the rear teeth to circulate, to stabilize and strengthen the engagement between the brake block 22 and the ring gear 210, and reduce the brake block 22 and the ring gear 210. Wear between.

2. According to the above-mentioned advantages, and in comparison with the prior art, the ring tooth portion 210 of the ratchet ring 21 of the present invention and the engaging teeth 221 of the brake block 22 are disposed, and are abutted by the abutting surface 220 of the brake pad 22. The nano-tank 12-slot wall is used to stabilize the stability of the present invention during operation to avoid the use of single-sided meshing to reduce the life of the component, and the present invention further reduces the cost and man-hour of replacing components, or avoids the entire set of replacements. And the cost of generating extra overhead.

Referring to the second, fourth and fifth figures, in order to be effective in the arrangement of the bonding surface 220 on both sides of the brake pad 22 and the receiving groove 12 In order to achieve the advantages described above, the groove wall of the receiving groove 12 of the present invention has an arc-shaped concave shape, and the bonding surface 220 on both sides of the braking block 22 is curved and convex with respect to the groove wall of the receiving groove 12, by receiving The groove 12 and the contact surface 220 of the brake block 22 are disposed so that the brake block 22 can swing along the groove wall of the receiving groove 12, so that the brake block 22 can be smoothly oscillated when the brake block 22 is actuated, and the ring tooth portion 210 is surely engaged. (In the present invention, the groove wall of the receiving groove 12 is arc-shaped and the bonding surface 220 on both sides of the brake block 22 is arc-shaped, which is an optimum embodiment, but is not intended to limit other executable forms).

The following describes in detail the functions and settings of each component:

1. Referring to the second, fourth, and fifth figures, in order to make the dial 41 move smoothly, the swing of the brake block 22 can be smoothly driven, and one end of the brake block 22 corresponding to the second elastic member 43 is provided. The dial 222, the second elastic member 43 controls the switching of the brake block 22 by the switching of the dial 41, and stabilizes the engagement of the engaging teeth 221 of the brake block 22 with the ring tooth portion 210.

2. Referring to the second to fifth figures, one end of the second elastic member 43 is provided with a recess 411, and one end of the second elastic member 43 is elastically engaged with the groove 411. The other end is in contact with the dial 222 of the brake block 22 to control the swing of the brake block 22, and the stable dial 41 is switched and drives the swing of the brake block 22, and the second elastic member 43 is switched by the dial 41. After the action.

3. According to the main technical features of the present invention and the description of the above two items, the structure of the first elastic member 42 and the second elastic member 43 will be further described in detail. Please refer to the second to fifth figures, the first elastic member. 42 and the second elastic member 43 each have an elastic portion 421, 431 and a positioning portion 422, 432. One end of the elastic portion 421 of the first elastic member 42 is elastically abutted against the bottom of the positioning groove 14, and the other end is elastically first. The positioning portion 422 of the elastic member 42 is biased by the spring portion 421 to be engaged with one of the two recesses 410, and the elastic portion 431 of the second elastic member 43 is elastically biased at one end. The groove 411 is grooved at the bottom, and the other end is elastically abutted against the positioning portion 432 of the second elastic member 43. The positioning portion 432 of the second elastic member 43 is biased against the dial 222 of the brake block 22 by the elastic portion 431. The positioning of the first elastic member 42 and the second elastic member 43 is used to stably control and fix the positioning of the dial 41 and the brake block 22 after switching.

4. As shown in the second figure, a positioning ring groove 32 is recessed in the periphery of the assembly opening 31 of the cover member 3, and the hole 11 of the trigger body 1 has a limit ring groove corresponding to the positioning ring groove 32. 110, further, a clip ring 33 is clamped to the positioning ring groove 32, and the outer peripheral side of the clip ring 33 is embedded in the limit ring groove 110 to fix and prevent the detachment of the clip ring 33 by the clip The attachment of the buckle 33 prevents the cover member 3 from falling off, and further prevents the drive assembly 2 in the trigger body 1 from falling off and being damaged.

The above is only a preferred embodiment for explaining the present invention, and is not intended to be The drawings are to be construed as limiting the invention in any way that any modification or alteration of the invention in the spirit of the inventions All should still be included within the scope of the intended protection of the invention.

In summary, the "ratchet wrench structure" of the present invention is practically and cost-effectively and fully meets the needs of industrial development, and the disclosed structural creation is also an unprecedented innovative structure, so it has "newness" Sexuality should be undoubtedly considered, and the invention can be more effective than the conventional structure, and therefore has "progressiveness", which fully complies with the requirements of the application requirements of the invention patents of the Chinese Patent Law, and is a patent application according to law. Please check with the bureau for an early review and give it affirmation.

1‧‧‧ wrench

11‧‧‧Perforation

110‧‧‧Limited ring groove

12‧‧‧ receiving tank

13‧‧‧Assemble slot

14‧‧‧ positioning slot

2‧‧‧Drive components

21‧‧‧Spine ring

210‧‧‧ Ring tooth

22‧‧‧ brake pads

220‧‧‧Fitting surface

221‧‧‧Bite teeth

222‧‧ ‧ dial

3‧‧‧Cover parts

31‧‧‧Assembly

32‧‧‧Positioning ring groove

33‧‧‧ clip ring

4‧‧‧ Controlled components

41‧‧‧Transfer

410‧‧‧ notch

411‧‧‧ Groove

42‧‧‧First elastic parts

421‧‧‧Flexible Department

422‧‧‧ Positioning Department

43‧‧‧Second elastic parts

431‧‧‧Flexible Department

432‧‧‧ Positioning Department

The first figure is a perspective view of the present invention.

The second drawing is an exploded perspective view of the components of the present invention.

The third drawing is a schematic cross-sectional view of a line AA of the first drawing of the present invention.

The fourth figure is a schematic cross-sectional view of the line BB of the first figure of the present invention.

The fifth figure is a schematic cross-sectional view of the dialing member of the present invention after switching.

1‧‧‧ wrench

21‧‧‧Spine ring

41‧‧‧Transfer

Claims (7)

A ratchet wrench structure includes a trigger body, a driving component, a cover member and a steering assembly, wherein: the trigger body end is provided with a through hole through the head end, and the inner wall of the through hole faces the trigger body A receiving groove is formed in the end recess, and one side of the groove wall on both sides of the receiving groove is outwardly opened to form a through hole, and the bottom of the receiving groove is recessed toward the end of the trigger body to be assembled for the steering piece assembly. a groove, the bottom of the assembly groove is provided with a concave positioning groove; the driving assembly comprises a ratchet ring and a brake block, the ratchet ring is installed in the through hole, and the outer peripheral side ring of the ratchet ring is provided with a ring tooth portion, and The brake block is disposed in the receiving groove, and each side of the brake block has a bonding surface that abuts against the wall of the receiving groove, and the corresponding block of the braking block is in mesh with the ring tooth portion and adjacent to each other. The second cover teeth; the cover member covers the through hole of the perforation and the receiving groove, and the cover member is provided with an assembly opening for the ratchet ring corresponding to the position of the ratchet ring; the steering assembly comprises a dialing member, a first An elastic member and a second elastic member, the dial member is pivotally disposed in the assembly slot, and the dial member pair The positioning groove is provided with two adjacent notches, the first elastic member is disposed in the positioning groove and elastically engages one of the notches of the dialing member, and the second elastic member is disposed on the opposite side of the dialing member provided with the notch The end is springed against the brake block; accordingly, when the ratchet ring mounted on the trigger body is engaged with the screw to be locked or disassembled, the ring tooth portion will be engaged with the brake block to engage with the rear teeth, and the brake block is borrowed. The wall is placed against the groove of the groove to disperse the force generated by the ratchet ring when it is actuated. The ratchet wrench structure according to claim 1, wherein the brake block is provided with a dial corresponding to the second elastic member, and the second elastic member controls switching of the brake block by switching of the dial member. According to the ratchet wrench structure described in claim 2, wherein The adjusting member set is provided with a groove at one end of the second elastic member, and one end of the second elastic member is elastically abutted against the bottom of the groove groove, and the other end is abutted against the groove of the brake block to control the brake block. swing. The ratchet wrench structure of claim 3, wherein the first elastic member and the second elastic member each have an elastic portion and a positioning portion, and one end of the elastic portion of the first elastic member elastically abuts against the positioning groove The bottom end of the groove is elastically biased against the positioning portion of the first elastic member, and the positioning portion of the first elastic member is snapped against the spring portion to be engaged with one of the two recesses, and the spring portion of the second elastic member is at one end. The bottom of the groove is bent against the bottom of the groove, and the other end of the second elastic member is biased against the positioning portion of the second elastic member, and the positioning portion of the second elastic member is biased against the spring portion of the brake block. The ratchet wrench structure according to claim 1, wherein the groove wall of the receiving groove is arc-shaped, and the two sides of the brake block abutting against the groove wall are arc-shaped. The ratchet wrench structure according to claim 1, wherein a periphery of the assembly opening of the cover member is recessed with a positioning ring groove. The ratchet wrench structure according to the sixth aspect of the invention, wherein the perforated hole wall of the trigger body is further provided with a limit ring groove corresponding to the positioning ring groove, and another clip ring is clamped to the positioning ring groove, and the The outer peripheral side of the clip ring is embedded in the limit ring groove.