TWI743439B - Ratchet wrench - Google Patents

Abstract

A ratchet wrench is provided, including a main body and a cover assembly. The cover assembly includes a lid member and a positioning member. The positioning member is buckled the lid member and is inserted into a groove of the main body to position on the main body. A surface of the lid member is flush with a surface of the main body.

Description

Ratchet wrench

The present invention is related to a ratchet wrench.

Conventional ratchet wrenches, such as TWI628051 and TWI623388, have a basic structure that includes a body, a ratchet piece, a cover, and a toggle unit. The ratchet piece is rotatably housed in the head of the body and passes through the toggle unit. Can control the rotation of the ratchet. Wherein, the cover is used to cover and stop the ratchet, so that it is confined in the receiving groove of the head of the main body.

However, in the ratchet wrench mentioned above, the cover is usually only set on the head of the main body through the screw thread, so that the head needs to reserve additional material for the screw holes, which results in the heavy weight of the head of the main body. Squeezed into the space of the slot for accommodating the ratchet, only a small size ratchet can be placed, which makes the structure of the ratchet insufficient; and after many times of disassembly and assembly of the screw, the thread structure is very easy to be damaged and chipped, which will lead to The cover cannot reliably confine the ratchet member in the cavity of the body. Through the above analysis, it can be clearly understood that the aforementioned ratchet wrench has shortcomings that need to be improved urgently.

Therefore, it is necessary to provide a novel and progressive ratchet wrench to solve the above-mentioned problems.

The main purpose of the present invention is to provide a ratchet wrench. The positioning member can be inserted into the groove of the main body after being fastened to the cover, and then the positioning member is inserted into the groove of the receiving groove to locate the cover, so that the cover is reliable. The ground cover is equipped with a limit ratchet head, which is very fast and convenient in assembly.

In order to achieve the above objective, the present invention provides a ratchet wrench, which includes a body, a dial button, a ratchet head, a switching component, and a cover-and-close component. The body includes a working head and a handle. The working head is surrounded by a first accommodating groove and a second accommodating groove. The two opposite sides of the working head are defined as an operation. Surface and a working surface, the first accommodating groove penetrates the operation surface, the second accommodating groove penetrates the working surface; the toggle button includes a driving portion and a toggle portion connected to each other, and the driving portion is rotatable Ground is inserted into the first accommodating groove, the dialing part is swingable relative to the operating surface with the driving part as an axis; the ratchet head is rotatably accommodated in the second accommodating groove, and the ratchet head includes A ring tooth portion; the switching assembly includes a tooth block and a switching element, the tooth block is movably accommodated in the second accommodating groove, and a tooth row of the tooth block is used to correspond to the ring tooth portion of the ratchet head Engaged, the two ends of the switching member are respectively connected to the tooth block and the driving part, and then the toggle is in a linkage relationship with the switching assembly; the cover-and-close assembly includes a cover and a positioning member, and the cover includes a base, A supporting part and a plurality of spaced limiting parts, the base body is provided with a through hole and includes a first face and a second face at intervals, and the supporting part protrudes along the radial direction of the through hole On the outer periphery of the first face of the base, the plurality of limiting parts protrude from the outer periphery of the second face of the base along the radial direction of the through hole, and the positioning member is sandwiched between the support part and the A plurality of limiting portions are buckled to the base body between them, and the positioning member is embedded in a groove portion of the second accommodating groove, so that the cover member is positioned on the working head to cover the second accommodating groove, Wherein, the first face of the cover is flush with the working surface; wherein, a plurality of through holes are formed through the supporting part, and the number of the plurality of through holes is equal to the number of the plurality of limit parts, and the through holes In the axial direction of the hole, the positions of the plurality of through holes and the positions of the plurality of limit parts are arranged to face each other, and the part of the positioning member is exposed in the plurality of through holes, the A plurality of through holes can allow foreign objects to extend into and press against the positioning member to drive the positioning member to deform.

1: working head

11: The first holding tank

12: The second holding tank

121: ditch

13: Operation surface

14: working surface

2: Grip

3: dial button

31: Drive

311: Docking Space

32: Toggle part

4: Ratchet head

41: Ring tooth

42: Drive head

5: Switch components

51: tooth block

511: tooth row

512: Dial slot

513: Beam

52: Switching pieces

521: first resting foot

522: second resting foot

53: Elastic

6: Cover and close components

7: cover

71: matrix

72: Through hole

73: The first face

74: second face

75: Support

751: Through Hole

76: Limit

77: Virtual baseline

8: positioning parts

Fig. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is another view of Fig. 1.

Figure 3 is a top view of Figure 2;

Fig. 4 is a partially cut-away perspective view of Fig. 1.

Fig. 5 is a side sectional view of Fig. 1;

Fig. 6 is a partial enlarged view of Fig. 5.

Fig. 7 is an exploded view of Fig. 1;

Fig. 8 is a partial side sectional view of the main body of Fig. 7;

Fig. 9 is a perspective view of a cover-and-close assembly according to an embodiment of the present invention.

Fig. 10 is another view of Fig. 9.

Fig. 11 is a top view of the cover of Fig. 9;

Fig. 12 is an exploded perspective view of a switching element and a tooth block according to an embodiment of the present invention.

Figures 13 and 14 are schematic diagrams of the operation of the switching components.

The following examples are only used to illustrate the possible implementation aspects of the present invention, but they are not intended to limit the scope of protection of the present invention, and are described first.

Please refer to Figures 1 to 14, which show a preferred embodiment of the present invention, the ratchet wheel of the present invention The wrench includes a body, a dial button 3, a ratchet head 4, a switch assembly 5, and a cover-and-close assembly 6.

The main body includes a working head 1 and a handle 2. The working head 1 is surrounded by a first receiving groove 11 and a second receiving groove 12, which define the working head 1 relative to each other. The two side surfaces are respectively an operating surface 13 and a working surface 14, the first accommodating groove 11 penetrates the operating surface 13, and the second accommodating groove 12 penetrates the working surface 14. The toggle button 3 includes a driving portion 31 and a toggle portion 32 connected to each other. The driving portion 31 is rotatably inserted into the first accommodating groove 11, and the toggle portion 32 takes the driving portion 31 as an axis. It can swing relative to the operating surface 13.

The ratchet head 4 is rotatably accommodated in the second accommodating groove 12, the ratchet head 4 includes a ring tooth portion 41, the switching assembly 5 includes a tooth block 51 and a switching member 52, the tooth block 51 is movable The ground is accommodated in the second accommodating groove 12, a tooth row 511 of the tooth block 51 is used to mesh with the ring tooth portion 41 of the ratchet head 4, and the two ends of the switching member 52 are respectively connected to the tooth block 51 and The driving portion 31 and the toggle button 3 and the switching assembly 5 are in a linkage relationship.

Therefore, in actual operation, the user can drive the driving part 31 to rotate by dialing the dial part 32, and the driving part 31 will drive the switching member 52 to move simultaneously and force the tooth block 51 to move when the driving part 31 rotates. , And then control the single rotation direction of the ratchet head 4.

The cover-and-close assembly 6 includes a cover 7 and a positioning member 8. The cover 7 includes a base 71, a supporting portion 75 and a plurality of limiting portions 76 arranged at intervals. The base 71 is provided with a through hole 72 and includes a first face 73 and a second face 74 spaced apart from each other. The ratchet head 4 further includes a driving head 42 (such as a D head), and the driving head 42 protrudes The through hole 72 is provided for connecting and driving an object. The support portion 75 protrudes from the outer periphery of the first surface portion 73 of the base 71 along the radial direction of the through hole 72, and the plurality of limiting portions 76 extend along the through hole 72. The radial direction of the hole 72 protrudes from the outer periphery of the second surface 74 of the base 71. The positioning member 8 is sandwiched between the supporting portion 75 and the plurality of limiting portions 76 and buckled to the base 71, and the positioning member 8 is embedded in the second container. A groove 121 of the groove 12 is used to position the cover 7 on the working head 1 to cover the second accommodating groove 12 to prevent foreign matter from entering the second accommodating groove 12 and to ensure that it is located in the second accommodating groove 12 The components inside the second accommodating groove 12 operate smoothly.

It is understandable that through the above method, the cover 7 is assembled without any screws, which can effectively reduce the amount of internal material of the working head 1 and achieve the purpose of reducing the weight of the working head 1. At the same time, the second accommodating groove 12 can also have a larger space for accommodating the ratchet head 4 of a larger size or a more special specification, so that the ratchet head 4 has a stronger structure and wider practicability. In addition, by using the positioning member 8 to be embedded in the groove 121 to achieve positioning, the processor can easily control the position of the groove 121 in the second accommodating groove 12 during processing, and at the same time cooperate with the known cover 7 The thickness dimension can precisely control the first face 73 of the cover 7 to be flush with the working surface 14, so that the entire cover 7 and the working surface 14 can have a uniform horizontal profile, thereby allowing the overall working head 1 Have better assembly quality.

It is worth mentioning that the structure of the plurality of limit parts 76 arranged at intervals not only has the advantage of saving processing materials, but also can easily and quickly construct an outer ring space together with the support part 75 to accommodate the limit positions. The positioning piece 8. In addition, the structure of the spacing arrangement is quite beneficial to the subsequent processing process. For example, but not limited to: when the cover 7 is produced by a mold to form a rough embryo, the spacing of the plurality of limiting portions 76 and the spacing space can ensure smooth demolding, and In the subsequent processing and refining process (such as polishing, deburring), the spacing space can be used for processing tools (such as cutter head) to smoothly extend into the outer ring space through the spacing space at a more appropriate angle position for operation.

Furthermore, a plurality of through holes 751 are formed through the supporting portion 75, and the number of the plurality of through holes 751 is equal to the number of the plurality of limiting portions 76, and in the axial direction of the through hole 72, the The positions of the plurality of through holes 751 and the positions of the plurality of limit parts 76 are arranged to face each other. Through this structural arrangement, the cover 7 can be demolded more smoothly, and part of the positioning member 8 is exposed in the plurality of through holes 751 , The plural pass The hole 751 allows foreign objects to extend into and press against the positioning member 8 to drive the positioning member 8 to deform. In this embodiment, the shape contour of the plurality of limiting portions 76 is complementary to the shape contour of the plurality of through holes 751.

Next, the structure of the cover 7 will be described in more detail, in which, viewed along the axis of the through hole 72, the center of a through hole 751 and the axis of the through hole 72 are connected to each other to form a virtual The reference line 77, and the other two through holes 751 are symmetrically arranged with the virtual reference line 77 as the center line. In this embodiment, the number of the plurality of through holes 751 is three, and the connecting line of the three through holes 751 is approximately an isosceles triangle; more specifically, the center of the first through hole 751 and the second through hole 751 The three included angles formed by the connection between the edge of the hole, the edge of the third through hole 751 and the axis of the through hole 72 are 120 degrees.

When assembling, the first surface portion 73 faces away from the second accommodating groove 12 and is in the same plane as the working surface 14, and the opening direction of the plurality of through holes 751 is away from the second accommodating groove 12 to enable the positioning Part of the member 8 is exposed, and the second face 74 faces the second accommodating groove 12 to stop and limit the ratchet head 4. In this embodiment, the positioning member 8 is a C buckle, and its elastic feature helps to keep it embedded in the groove 121 normally, and it is only necessary to use the pliers body to extend into the two through holes 751 to close the groove 121 when it is to be disassembled. The two ends of the exposed C buckle are enough, which is quite convenient and fast.

Preferably, the switching assembly 5 further includes an elastic member 53. One end of the elastic member 53 is positioned at the driving portion 31, and the other end of the elastic member 53 is positioned at the switching member 52. The elastic member 53 drives the switching member 52 in a normal state. The ground has a tendency to move toward the tooth block 51; in other words, the elastic member 53 can make the switching member 52 normally abut against the tooth block 51, so as to have a better linkage response.

More specifically, the tooth block 51 is provided with the tooth row 511 on one side facing the ratchet head 4, and the tooth block 51 is provided with a shift groove 512 on the side facing away from the ratchet head 4, and the switching member 52 is extended into The shifting groove 512 drives the tooth block 51 to move. Wherein, the switching member 52 includes two first abutting feet 521 and two second abutting feet 522, the two first abutting feet 521 are arranged on one side of the switching member 52 at intervals, and the two second abutting feet 522 feet The two first abutting legs 521 are inserted into the driving portion 31, and the two second abutting legs 522 are inserted into the dial groove 512; wherein, the elastic member 53 is located at the other side of the switching member 52. Between the two first abutting feet 521. In this embodiment, the driving portion 31 is surrounded by an insertion space 311, the opening of the insertion space 311 faces the second accommodating groove 12, the portion of the two first abutting legs 521 and the elastic member 53 Some of them are collectively accommodated in the insertion space 311.

In more detail, when viewed perpendicular to the switching element 52, the overall switching element 52 has an "H" shape. The thickness of the first abutting leg 521 is greater than the thickness of the second abutting leg 522. When the driving part 31 rotates, it has a larger contact area with the two first abutting legs 521. Wherein, the purpose of designing the thickness dimension of each second abutting foot 522 to be small is to reduce the contact area with the tooth block 51, reduce the frictional force when the switching member 52 intends to initially swing relative to the tooth block 51, and then The smoothness and responsiveness of the swing of the switching element 52 are improved, so that the user has a better feel during operation. In addition, the separation distance between the two second abutting feet 522 is also greater than the separation distance between the two first abutment feet 521, so as to reliably abut against the upper and lower ends of the dial groove 512, thereby stably pushing against the The tooth block 51 moves. In this embodiment, a cross beam 513 is provided in the shifting groove 512, and the two second abutting legs 522 extend into the shifting groove 512 and straddle the cross beam 513. The cross beam 513 can further limit the two The second abutting foot 522 prevents it from moving up and down relative to the tooth block 51 and detaching from the tooth block 51.

In summary, the cover of the ratchet wrench of the present invention can be quickly assembled and positioned on the working head through the positioning member to cover the second accommodating groove, thereby preventing foreign objects from entering and interfering with the rotation of the ratchet head. Moreover, when it is easy to process and assemble, the cover can be flush with the working surface, and there is a complete and unified plane, which greatly improves the overall assembly quality. In addition, the H-shaped switching element can have a faster swing response and improve the overall operating feel.

1: working head

3: dial button

31: Drive

311: Docking Space

32: Toggle part

4: Ratchet head

511: tooth row

52: Switching pieces

53: Elastic

7: cover

8: positioning parts

Claims (9)

A ratchet wrench includes: a body, including a working head and a handle part, the working head is surrounded by a first accommodating groove and a second accommodating groove that define the working head The two opposite sides are respectively an operating surface and a working surface. The first accommodating groove penetrates the operating surface, and the second accommodating groove penetrates the working surface; a dial button includes a driving part and a dial connected to each other. The driving part is rotatably inserted into the first accommodating groove, and the dialing part is swingable relative to the operating surface with the driving part as an axis; a ratchet head is rotatably accommodated in the second accommodating groove The accommodating groove includes a ring tooth portion; a switching assembly includes a tooth block and a switching member, the tooth block is movably accommodated in the second accommodating groove, and a tooth row of the tooth block is used to interact with the tooth block. The ring teeth of the ratchet head mesh with each other, and the two ends of the switching element are respectively connected to the tooth block and the driving part, and then the toggle and the switching element are in a linkage relationship; a cover-and-close element includes a cover and a positioning element , The cover includes a base, a support portion and a plurality of spaced-apart limiting portions, the base is penetrated with a through hole and includes a first face and a second face that are opposed to each other, and the support is along the The radial direction of the through hole protrudes beyond the outer periphery of the first face of the base, and the plurality of limiting parts protrudes from the outer periphery of the second face of the base along the radial direction of the through hole, and the positioning member It is clamped between the support portion and the plurality of limiting portions to be fastened to the base body, and the positioning member is embedded in a groove portion of the second accommodating groove, so that the cover member is positioned on the working head to cover the set In the second accommodating groove, the first face of the cover is flush with the working surface; wherein, a plurality of through holes are formed on the supporting part, and the number of the plurality of through holes is equal to the plurality of limit parts In the axial direction of the through hole, the positions of the plurality of through holes and the positions of the plurality of limit parts are arranged to face each other, the part of the positioning member is exposed in the plurality of through holes, and the plurality of through holes are available for The foreign object extends into and presses against the positioning member to drive the positioning member to deform. The ratchet wrench according to claim 1, wherein when viewed along the axis of the through hole, the center of the through hole and the axis of the through hole are connected to each other to form a virtual reference line, and the other two through holes are It is symmetrically arranged with the virtual reference line as the center line. The ratchet wrench according to claim 1, wherein the first face part faces away from the second accommodating groove and is in the same plane as the working surface, and the opening direction of the plurality of through holes is away from the second accommodating groove so that A part of the positioning member is exposed, and the second face faces the second accommodating groove to stop and limit the ratchet head. The ratchet wrench according to claim 1, wherein the switching assembly further includes an elastic member, one end of the elastic member is positioned at the driving portion, the other end of the elastic member is positioned at the switching member, and the elastic member drives the switching member Normally there is a tendency to move towards the tooth block. The ratchet wrench according to claim 4, wherein the tooth block is provided with the tooth row on a side facing the ratchet head, and the tooth block is provided with a shift groove on a side facing the ratchet head; the switching member includes a second One abutment foot and two second abutment feet, the two first abutment feet are spaced apart on one side of the switching element, the two second abutment feet are spaced apart on the other side of the switching element, the two The first abutting foot is inserted into the driving part, and the two second abutting feet are inserted into the dial groove; wherein, the elastic member is located between the two first abutting feet. The ratchet wrench according to claim 5, wherein a beam is provided in the shift groove, and the two second abutting feet extend into the shift groove and straddle the beam. The ratchet wrench according to claim 5, wherein the driving portion surrounds an insertion space, the opening of the insertion space faces the second accommodating groove, the portion of the two first abutting legs and the portion of the elastic member They are housed together in the plug-in space. The ratchet wrench according to any one of claims 1 to 7, wherein the ratchet head further includes a driving head, and the driving head protrudes from the through hole for connecting and driving an object. The ratchet wrench according to claim 7, wherein when viewed along the axis of the through hole, the The center of the through hole and the axis of the through hole are connected to each other to form a virtual reference line, and the other two through holes are symmetrically arranged with the virtual reference line as the center line; the first face is facing away from the second The accommodating groove is on the same plane as the working surface, the opening direction of the plurality of through holes is away from the second accommodating groove to expose a part of the positioning member, and the second surface faces the second accommodating groove to block Limit the ratchet head; a beam is provided in the shift groove, the two second abutting feet extend into the shift groove and straddle the beam; the ratchet head further includes a driving head, the driving head protruding from the through Holes for connecting to drive an object; the number of the plurality of through holes is three; the line of the three through holes is approximately an isosceles triangle; the center of the first through hole, the edge of the second through hole, and the third The three included angles formed by the connection between the edge of the through hole and the axis of the through hole are 120 degrees; the positioning member is a C buckle; the shape and contour of the plurality of limit parts are complementary to the shape and contour of the plurality of through holes; From the perspective of perpendicular to the switching element, the switching element is in the shape of "H", the thickness of the first abutting foot is greater than that of the second abutting foot; the distance between the two second abutting feet is Greater than the distance between the two first abutting feet.

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