CN1263808A - Ratchet-driven tool - Google Patents

Abstract

A ratchet tool is composed of a main body with the first and the third containers in its head and handle, a change-over switch in the third container, a pushing unit in the change-over switch for engaging it, a locking unit, and a ratchet unit. The invention has simple structure, easy assembly, reliable reversing, high bearing torsion, low manufacturing cost and short flow.

Description

ratcheting tool

The invention relates to a ratchet tool, in particular to a ratchet tool with large torsion force, accurate and rapid reversing, simple structure and easy assembly.

Ratchet tool is a very commonly used hand tool, such as the ratchet wrench we usually use, so this type of tool is required to have a high torque value, and the ratchet part has a high number of teeth, so that the wrench is not easy to be damaged when consumers use it. The size of the torque will be determined by the number of meshing teeth between the clamping part and the ratchet part. For example, the space in the engine room of a car is very small. When using a ratchet wrench, the excessive rotation angle will affect the smoothness of operation. The number of teeth of the moving part, because the number of teeth of the ratchet part is high, the rotation angle of each tooth is small. The earliest ratchet wrench has progressed from 24 teeth to the current 72 teeth, that is, the rotation angle has increased from the earliest 15 degrees of one tooth to one tooth. 5 degrees.

For the above-mentioned requirements for the ratchet wrench, known wrenches, such as U.S. Patent No. 295377 (Appendix 2), disclose a ratchet wrench, which has an upper cover and a lower cover, and the setting of the upper and lower covers will certainly affect the entire ratchet wrench. The appearance is beautiful, and the cost is increased, and the assembly time is increased. The reversing switch has a positioning device for positioning. The positioning device is placed in a diagonal upward manner, but this diagonal upward hole is quite difficult to manufacture and is easy to drill. In addition, The accommodating part unfolds at an oblique angle and must be manufactured by computerized lathe milling. The cost is too high and it is easy to cause a production bottleneck. Although it meets the requirements of combining the ratchet part with the high number of teeth on the top part, it can produce high Torque, but was too slow to produce and too expensive to survive in a competitive market to be practical.

People have also designed a ratchet wrench with high torque and high number of teeth. As shown in Annex 1, the head of the wrench body has four accommodation spaces. The first to third accommodation spaces can be milled by a milling cutter. It is quite easy to mill, and the irregular shape of the fourth storage space must be turned by computer lathe, which is relatively expensive and time-consuming. Moreover, the first to fourth storage spaces are continuously open, causing headaches. The structure of the upper part becomes quite weak, which is unfavorable for the increase of the torque value. In addition, because the ratchet part needs a cover body, in addition to increasing the cost and difficulty of assembly, it is also unfavorable for the integrity of its appearance. Driven by the hook part of the spring, and the hook part is driven by the top of the top part, its driving force will be obviously insufficient, because it is not driven by the side part of the top part, and the force is indirect. There will be non-obvious cases, which is one of its major disadvantages.

The object of the present invention is to provide a ratchet tool, especially such a ratchet tool, which can enhance the torsion bearing capacity of the tool head, and can prevent the teeth from slipping or skipping between the ratchet part and the clamping part. When the situation occurs, the torque of the whole tool is increased. When assembling, it only needs to be combined with a locking piece. The assembly is very fast and convenient. Since no cover is needed, the appearance of the whole tool is neat and beautiful, and the manufacturing time and cost are reduced. .

The purpose of the present invention is achieved in that a kind of ratcheting tool comprises:

A wrench body, one end of the wrench body is provided with a head, and the other end is formed with a handle, wherein a first accommodating part is formed in the head, and a third accommodating part is provided in the handle, and the first and third accommodating parts There is a second accommodating part between the parts;

A reversing switch is placed in the third accommodating part of the wrench body and can be rotated and positioned relative to the handle;

A jacking device is put into the reversing switch to engage, and can be rotated and positioned with the reversing switch;

A clamping part is provided with a tooth on one side, which is placed in the second accommodation part of the wrench body, and the pushing device is combined with the side without the tooth part, and can be driven by the pushing device in the second accommodation part move;

A ratchet part is in the shape of a cylinder, and the outer ring is provided with a tooth part, which is fixed in the first accommodating part of the head, and can rotate relative to the head, wherein the tooth part on it and the tooth part on the locking part In a fit state.

The present invention has the advantages of simple structure, easy assembly and reliable reversing, and has the following advantages:

(1) The ratchet tool of the present invention can provide a ratchet tool with a simple structure and easy assembly. When assembling, the whole ratchet tool can be assembled by using only one locking member without any screws.

(2) The ratchet tool of the present invention effectively solves the difficulty in the manufacture of the general ratchet wrench. Its first to third accommodating parts only need to be milled with a milling cutter without using a computerized lathe. Low, short manufacturing process and short manufacturing hours will bring great benefits to the hand tool industry.

(3) The ratcheting tool of the present invention has a connecting portion between the first accommodation part and the third accommodation part, which can provide a better supporting force for the head, that is, it can improve the torsional force of the whole tool, and overcome The entire ratchet wrench in the prior art suffers from the defect of reduced torsion, but has high torsion. Therefore, it has practical value and is convenient for users to operate.

(4) The ratcheting tool of the present invention is sure and quick to change direction, and utilizes the top control device to directly drive the clamping device to move and change direction, which directly generates a vertical component force and a horizontal component force, and the vertical component force directly makes the clamping device The tooth part of the ratchet part closely fits the tooth part of the ratchet part, and the horizontal component force makes the clip part close to the wall of the second accommodating part. The ratchet will not slip or jump when applying force, that is, it can withstand high torque, and the horizontal force makes the clamping part close to the wall of the second accommodating part. Thickness to withstand the thrust of the ratchet parts, which also helps to increase the torque of the whole wrench, and the fixing device is exchanged to the switch to fix it, which can ensure that the relative position of the clamping device and the clamping part will not have any movement In the case of a bit, there is an additional safety device. This function is quite progressive and practical. It can greatly improve the use level of the adjustable wrench and its associated high added value, and has good economic benefits.

Concrete structures of the present invention are given by the following embodiments and accompanying drawings. in:

Fig. 1 is a three-dimensional exploded view of a first embodiment of a ratcheting tool proposed according to the present invention;

Fig. 2 is an assembled side sectional view of the first embodiment of a ratcheting tool according to the present invention;

Fig. 3 is a first action state diagram of the first embodiment of a ratcheting tool proposed according to the present invention;

Fig. 4 is a second action state diagram of the first embodiment of a ratcheting tool proposed according to the present invention;

Fig. 5 is a third action state diagram of the first embodiment of a ratcheting tool proposed according to the present invention;

Fig. 6 is an assembled perspective view of the first embodiment of a ratcheting tool according to the present invention;

Fig. 7 is a side sectional view of the second embodiment of a ratcheting tool proposed according to the present invention;

Fig. 8 is a state diagram of the third embodiment of a ratcheting tool proposed according to the present invention;

Fig. 9 is a state diagram of the fourth embodiment of a ratcheting tool proposed according to the present invention.

The specific structure proposed by the present invention will be further described below in conjunction with the accompanying drawings and its preferred embodiments.

The structure shown in Fig. 1 and Fig. 2 and Fig. 3 is the first preferred embodiment of a ratcheting tool proposed by the present invention, it has a wrench body 10, one end of the wrench body 10 is a head 11, and The other end is a handle 12, wherein a first accommodation portion 13 is formed on the head 11, the first accommodation portion 13 is a circle, and a concave ring groove 131 is provided at the bottom of its inner edge wall surface, which is connected with the first An arc-shaped second accommodating portion 14 is provided inside the handle portion 12 adjacent to the accommodating portion 13. The second accommodating portion 14 is hidden in the handle portion 12, adjacent to the second accommodating portion 14 and on the handle. 12 is provided with a third accommodating portion 15, one end of the third accommodating portion 15 penetrates the surface of the shank 12 in a cylindrical shape, and overlaps with the second accommodating portion 14 to form a broken hole to communicate with each other, so as to facilitate the top part 61 Direct action, without additional processing to get through the second housing part 14 and the third housing part 15, so the third housing part 15 and the first housing part 13 are adjacent to the first housing part 13 through the connecting part 16 The connecting part 16 makes the handle 12 and the head 11 not all hollowed out and connected, which can increase the structural strength between the head 11 and the handle 12 .

A ratchet part 20 is in the shape of a ring, and its outer wall surface is provided with a tooth part 21, and the two sides of the tooth part 21 are respectively provided with a concave ring groove 23 and a concave part 22, and the inner wall surface of the ratchet part 20 is provided with There is a rotating part 24 in a polygonal shape.

A locking member 30 is a C-shaped elastic body.

A clamping part 40 is in the shape of a half-moon curved arc, and its side wall is provided with a tooth portion 41, and the other side of the tooth portion 41 is provided with a long groove 42, and the two ends of the long groove 42 are respectively provided with first and the second positions 421, 422, and the two ends of the clamping member 40 are respectively provided with first and second end portions 43, 44.

A reversing switch 50 is composed of a trigger part 51 and a driving part 52, wherein the triggering part 51 is in a state where both ends are narrow and the middle part is large, so that the user can pull the reversing switch 50, and the driving part 52 is cylindrical , so that the reversing switch 50 can rotate around it, wherein the middle part of the driving part 52 is provided with a receiving hole 521 .

A top system device 60 is combined by a top piece 61 and an elastic member 62, wherein the elastic member 62 belongs to a tension spring as the most preferred embodiment, one end has a bottom 621, and the other end has a buckle 622, the The top piece 61 is in the shape of a strip, and one end thereof can abut against the bottom 621 of the elastic member 62 .

When assembling, put the reversing switch 50 into the third accommodating portion 15 of the wrench body 10 first, then put the top-pressing device 60 into the accommodating hole 521 of the reversing switch 50 via the second accommodating portion 14, and The elastic member 62 is sleeved on the outside of the top molding 61, one end of the top molding 61 is pressed against the bottom 621 of the elastic member 62, and the buckle 622 of the elastic member 62 is buckled on the outer edge of the accommodating hole 521, this part Please refer to FIG. 3 in particular, and then place the clamping member 40 into the second accommodating portion 14, wherein the end of the clamping member 40 has a tooth portion 41 facing the first accommodating portion 13, and has a long groove 42. The end of the top is facing the second accommodating part 14, so that the top part 61 extends into its long groove 42, the locking part 30 is inserted into the concave ring groove 23 of the ratchet part 20, and then the combination of the two Put it into the first accommodating part 13 of the wrench body 10. At this time, the locking member 30 will snap into the concave ring groove 131 of the first accommodating part 13, and make the ratchet part 20 combine with the head 11 of the wrench body 10. Together, and the ratchet part 20 and the head 11 can rotate relative to each other. Please refer to FIG. 2 in particular for this part, and then refer to FIG. 3. After the assembly is completed, (refer to Fig. 6 for the assembled ratchet tool) Due to the elasticity of the elastic member 62, it will be pressed against the long groove 42 of the ejector 40. It can be clearly seen from the assembly process that the entire assembly process of the present invention is quite fast, and only one locking piece 30 is needed, without any Screw or cover, quite simple.

Please refer to Fig. 3 to Fig. 5. As shown in Fig. 3, the ejecting device 61 is against the second position 422 in the long groove 42 of the clamping part 40. At this time, the clamping part 40 rotates counterclockwise to drive the screw to be loosened. , otherwise clockwise is an idling state, the pushing device 61 pushes the clamping part 40 obliquely, and the pushing device 61 will generate an oblique force, which can be divided into a vertical component force and a horizontal component force, wherein The vertical force component pushes the clamping part 40 against the tooth part 41 on it and the tooth part 21 of the ratchet part 20 and fits closely, and this part can provide high torque.

Pull the reversing switch 50 when reversing, and the driving part 52 drives the top control device 60 to rotate. Please refer to FIG. The jacking force makes the length of the elastic member 62 elongated. When the pulling action rotates to an angle, as shown in FIG. 421 , at this moment, the ratchet member 20 also generates a horizontal force component and a vertical force component, respectively pushing the clamping member 40 to the teeth of the ratchet member 20 and the end of the second accommodating portion 14 .

Please refer to Fig. 7, it is the second preferred embodiment of the present invention, and its main difference with the first preferred embodiment lies in the difference between the ratchet part 20 and the head 11, the central part of its head 11 of a wrench body 10 is set There is a first accommodating part 13, a ratchet part 70 is cylindrical, and its side ring is provided with a tooth part 71, and the two ends of the tooth part 71 are respectively provided with a flange 72 and a rotating part 73, and the rotating part 73 A fixing device 80 is provided on it, and the fixing device 80 is used to lock the sleeve when the rotating part 73 is combined with the sleeve (not shown in the figure), and the flange 72 of the ratcheting part 70 then extends into the first part of the head. In the accommodating portion 13 , the locking member 30 locks and fixes the ratchet member 70 and the recessed ring grooves 131 , 731 of the head 11 , so that the ratchet member 70 can pivot.

Please refer to Fig. 8, it is the third preferred embodiment of the present invention, and its main difference with the first preferred embodiment is the difference of top system device 90, and the top system device 90 of present embodiment also is made of top product 91 and the elastic member 92, wherein the top product 91 is also in the shape of a long strip, and a housing hole 911 is provided inside it, and the housing hole 911 penetrates to the bottom of the top product 91, and the elastic member 92 is inserted into the housing hole 911 internal fixation, the main difference from the first embodiment is that the first embodiment belongs to the top part 61 and is embedded in the elastic member 62, while the third embodiment is that the elastic member 92 is placed inside the top part 91, both The effect achieved is consistent.

Please refer to Fig. 9, which is the fourth preferred embodiment of the present invention. The difference from the third preferred embodiment is only the ratchet part 70, and other components are substantially the same. The ratchet part 70 of the fourth embodiment has A driving part 73 and flange 72, while the ratchet part 20 of the third preferred embodiment is penetrating.

Claims (13)

1. A ratcheting tool, characterized in that: comprising, A wrench body, one end of the wrench body is provided with a head, and the other end is formed with a handle, wherein a first accommodating part is formed in the head, and a third accommodating part is provided in the handle, and the first and third accommodating parts There is a second accommodating part between the parts; A reversing switch is placed in the third accommodating part of the wrench body and can be rotated and positioned relative to the handle; A jacking device is put into the reversing switch to engage, and can be rotated and positioned with the reversing switch; A clamping part is provided with a tooth on one side, which is placed in the second accommodation part of the wrench body, and the pushing device is combined with the side without the tooth part, and can be driven by the pushing device in the second accommodation part move; A ratchet part is in the shape of a cylinder, and the outer ring is provided with a tooth part, which is fixed in the first accommodating part of the head, and can rotate relative to the head, wherein the tooth part on it and the tooth part on the locking part In a fit state. 2. A ratcheting tool according to claim 1, characterized in that: the combination of the ratchet part and the head of the wrench body can be pivoted by a locking part, so that the ratchet part can be moved relative to the head. rotate. 3. A ratchet tool according to claim 2, characterized in that: a recessed ring groove can be provided on the inner wall of the head, and a recessed ring groove is also provided on the bottom edge of the ratchet part. When the ratchet part is placed in the head, the locking part is placed between the two recessed ring grooves, so that the ratchet part can be combined with the head to rotate. 4. A ratcheting tool according to claim 1, characterized in that: the reversing switch is composed of a trigger part and a driving part, wherein the trigger part can be pulled by the hand to drive Rotate around the center. 5. A ratchet tool according to claim 1, characterized in that: the pushing device is composed of an elastic member and a pushing piece. 6. A ratcheting tool according to claim 5, characterized in that: the ejector is in the shape of a strip, and the elastic member is a strip-shaped spring. 7. A ratcheting tool according to claim 4, characterized in that: a housing hole is provided on the wall of the driving part to house the jacking device. 8. A ratcheting tool according to claim 6, characterized in that: one end of the elastic member can be provided with a bottom for receiving one end of the top part, and the other end of the elastic member can be provided with a buckle The part is used to resist the outer wall surface of the accommodating hole of the driving part. 9. A ratcheting tool according to claim 1, characterized in that: a long groove is provided on the other side of the clamping part relative to the teeth, for the clamping part to extend into it to drive the clamping The parts move in the second accommodating part. 10. The ratchet tool according to claim 1, characterized in that: a penetrating rotating part can be formed in the ratchet member. 11. The ratchet tool according to claim 1, wherein the ratchet member can be configured to have a protruding rotating portion at one end. 12 . The ratcheting tool according to claim 1 , wherein a connecting portion is provided on the second accommodating portion between the first and third accommodating portions. 13. The ratcheting tool according to claim 5, characterized in that: a receiving hole can be provided inside the top molding, and the elastic member can be placed in the receiving hole.

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