TWI535540B - Rolling support structure having a ratchet assembly - Google Patents

Description

Ratchet assembly with rollable support structure

The present invention relates to a positioning member for a hand tool, and more particularly to a ratchet assembly having a rollable support structure.

A typical ratchet wrench can be connected to the sleeve at one end and the other end can be held by one hand. Since the ratchet wrench has a ratchet member inside, it can be conveniently used by the user to rotate the nut or the screw without special conversion of the force. In the counterclockwise direction, as shown in FIG. 5, the ratchet member inside the conventional ratchet wrench includes a reversing support member 60 which is integrally formed and formed into a semi-spherical shape at the front end, and is disposed inside the rotary member for converting the ratchet Because the front end of the reversing support member 60 abuts against the ratchet member for a long time, under the constant switching operation, the front end of the reversing support member 60 is easily worn and ground, which makes the switching operation difficult. And the card effect is not good, it is necessary to improve.

In order to solve the problem that the front end of the reversing support member in the existing ratchet wrench is easy to wear, the main object of the present invention is to provide a ratchet assembly having a rollable support structure, which is provided with a rotatable ball at the front end of the reversing support member. It can rotate and slide with the position of the ratchet member to achieve the purpose of increasing the service life.

The technical means used in the present invention is to provide a ratchet assembly having a rollable support structure, comprising: a casing which is hollow and defines a fixed space inside, and a communication is provided on opposite sides of the casing. An opening of the fixed space; a ratchet member correspondingly disposed in the fixed space and having a ratchet surface; a sleeve fixing device horizontally piercing the outer casing and correspondingly being engaged with the ratchet member, and comprising a sleeve positioning member, a rotating member, a reversing support member and a pawl block, the sleeve The positioning member is disposed in the fixing space of the outer casing, and protrudes from one of the openings of the outer casing at one end, the rotating member is rotatably correspondingly disposed on the sleeve positioning member, and has a convex rotation. a support member receiving hole is disposed in the radial direction of the rotating column, and the reversing support member is corresponding to the supporting member receiving hole of the rotating member, and includes a spring sleeve, a spring and a ball The spring is disposed at one end of the elastic sleeve, and the ball is rotatably disposed on the elastic sleeve different from the end provided with the spring, and the pawl block is pivotally disposed on the sleeve positioning member And one side is engaged with the ball of the reversing support member, and one end of the detent block is correspondingly engaged with the ratchet surface of the ratchet member.

The ratchet assembly having a rollable reversing support member, wherein the elastic sleeve forms a bead groove at one end of the ball, and the ball is rotatably disposed in the bead groove.

The foregoing ratchet assembly having a rollable reversing support member, wherein the sleeve positioning member has a column-shaped rotating portion, and one end of the rotating portion is provided with a mounting hole, and the rotating member includes a connection In the rotating disk of the rotating column, the rotating column is a hollow cylinder, and the rotating disk is rotatably abutted against the rotating portion, and the rotating column is extended to the mounting hole.

The ratchet assembly having a rollable reversing support member, wherein the sleeve positioning member defines a longitudinally extending receiving groove on the outer side of the rotating portion, and a through hole is formed in the outer side of the rotating portion. The pivoting rod is disposed in the receiving groove correspondingly and pivotably disposed on the pivoting rod.

The improvement of the effect obtainable by the present invention is that the front end of the reversing support member is provided with a rotatable ball. When the rotary member is switched, the ball of the reversing support member can rotate in the direction of displacement of the detent block without Continuously contact the pawl block at a single point to achieve the purpose of dispersing the friction point and increasing the service life of the reversing support.

10‧‧‧ Shell

11‧‧‧Fixed space

12‧‧ ‧ cover

13‧‧‧ openings

20‧‧‧ ratchet parts

21‧‧‧ ratchet

30‧‧‧Sleeve fixing device

31‧‧‧Sleeve locating parts

311‧‧‧Rotating Department

312‧‧‧Installation holes

313‧‧‧ accommodating slots

314‧‧‧Connecting port

315‧‧‧ pivot rod

316‧‧‧Sleeve positioning unit

32‧‧‧Rotating parts

321‧‧‧ rotating disk

322‧‧‧Spinning column

323‧‧‧Supporting hole

33‧‧‧Reversing support

331‧‧‧Bounce sleeve

3311‧‧‧Spring slot

3312‧‧‧容珠槽

332‧‧‧ Spring

333‧‧‧Beads

34‧‧‧Pawl block

341‧‧‧ tooth surface

60‧‧‧Reversing support

1 is an exploded view of a preferred embodiment of the present invention.

Figure 2 is a partially exploded view of the sleeve securing device of the preferred embodiment of the present invention.

Figure 3 is a view showing a state of use of clockwise rotation in accordance with a preferred embodiment of the present invention.

Figure 4 is a view showing the state of use of the counterclockwise rotation of the preferred embodiment of the present invention.

Fig. 5 is an external view of a conventional reversing support member.

In order to understand the technical features and practical functions of the present invention in detail, and in accordance with the contents of the specification, the following is further illustrated in the following preferred embodiments.

The present invention is a ratchet assembly having a rollable support structure. Referring to the preferred embodiment of FIGS. 1-3, a housing 10, a ratchet member 20 and a sleeve securing device 30 are included.

As shown in FIG. 1 and FIG. 2, the outer casing 10 is hollow and has a fixed space 11 formed therein. A cover 12 is disposed on the top of the outer casing 10, and is respectively disposed on the front and rear sides of the outer casing 10. An opening 13 that communicates with the fixed space 11.

As shown in FIG. 1 and FIG. 2, the ratchet member 20 is correspondingly disposed in the fixed space 11 and has a circumferentially shaped ratchet surface 21.

As shown in FIG. 2 and FIG. 3, the sleeve fixing device 30 is horizontally inserted through the outer casing 10 and correspondingly engaged with the ratchet member 20, and includes a sleeve positioning member 31, a rotating member 32, and a change. The support member 33 and a pawl block 34; wherein the sleeve positioning member 31 is disposed in the fixing space 11 of the outer casing 10, and protrudes from one of the openings 13 at one end, the sleeve positioning member 31 is A rotating portion 311 having a columnar shape is formed in the center of the rotating portion 311. The mounting hole 312 is a blind hole, and a longitudinal opening is formed on the outer side of the rotating portion 311. a semi-circular receiving groove 313, the receiving groove 313 and the mounting hole 312 form a connecting port 314, and the rotating portion 311 is provided with the device A pivoting rod 315 is formed through the receiving groove 313. The rotating portion 311 protrudes from a side of the mounting hole 312 to form a sleeve positioning portion 316.

The rotating member 32 includes a rotating disk 321 and a rotating column 322 integrally connected to the central side of the rotating disk 321 . The rotating column 322 is a hollow cylinder and is radially continuous on the outer side of the rotating column 322 . A support member accommodating hole 323 is defined. The rotary member 32 extends from one end of the rotating column 322 to the mounting hole 312 of the sleeve positioning member 31, and the rotating plate 321 is rotatably abutted against the rotation. The end face of the portion 311.

The reversing support member 33 is correspondingly disposed on the support receiving hole 323 of the rotating member 32, and is pierced by the connecting port 314 of the sleeve positioning member 31, and includes a spring sleeve 331 and a spring 332. And a ball 333, the elastic sleeve 331 is a cylindrical cylinder, and has a spring groove 3311 recessed at one end of the elastic sleeve 331, and the spring groove is provided in the elastic sleeve 331 The opposite end of the 3311 is formed with a bead groove 3312. The elastic sleeve 331 is disposed at the support receiving hole 323 of the rotating column 322 at one end of the spring groove 3311, and is correspondingly received by the spring 332. In the spring slot 3311, the springs 332 are respectively abutted against the mounting holes 312 of the sleeve positioning member 31 and the spring sleeve 331. The ball 333 is rotatably disposed on the spring. The bead groove 331 of the sleeve 331 can be placed only in the bead groove 3312, or the ball 333 can be rotatably clamped in the bead groove 3312, only slightly at one end. The state of the bulge.

The pawl block 34 is disposed in the accommodating groove 313, and is pivotally disposed on the pivoting rod 315. The pawl block 34 is an elongated block and is formed at the upper and lower ends respectively. A tooth surface 341 corresponding to the ratchet surface 21 of the ratchet member 20, the reversing support member 33 is elastically correspondingly engaged with one side of the pawl block 34.

The preferred embodiment of the present invention is shown in FIG. 3. In the normal use state, the reversing support member 33 of the sleeve fixing device 30 will abut against the side of the pawl block 34 to make the pawl The block 34 pivotally swings, and the pawl block 34 is correspondingly engaged with one of the tooth flanks 341 on the ratchet surface of the ratchet member 20. 21, taking clockwise rotation as an example, the tooth surface 341 of the upper end of the pawl block 34 abuts against the ratchet surface 21 of the ratchet member 20, and when the sleeve positioning member 31 rotates in the clockwise direction, it can be generated. The force of the clamping, at the same time, when the pawl block 34 is in contact with the ball 333 of the reversing support member 33, since the ball 333 will follow the force, the force point and the friction surface will continuously change. Thereby, it is possible to reduce the possibility of the ball 333 being worn on the same contact surface and to increase the service life of the reversing support 33.

As shown in FIG. 4, the reversing support member 33 is rotated through the rotary member 32 to be adjacent to the lower side of the pawl block 34, so that the tooth surface 341 of the lower end of the pawl block 34 abuts against the spine of the ratchet member 20. The tooth surface 21 can fix the sleeve positioning member 31 to rotate in the counterclockwise direction to generate a clamping force.

The reversing support member 33 of the sleeve fixing device 30 of the present invention is designed to pass through the rotatable ball 333, and can continuously change the contact position with the pawl block 34, thereby reducing the wear of a single specific position, thereby increasing the service life. For the purpose, at the same time, when the ball 333 of the reversing support member 33 is worn out, it is only necessary to replace the ball 333 separately, and it is not necessary to replace the entire sleeve fixing device 30, which has excellent practicability.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art can use the present invention without departing from the technical features of the present invention. Equivalent embodiments of the invention, which are subject to the subject matter of the present invention, are still within the scope of the technical features of the present invention.

10‧‧‧ Shell

11‧‧‧Fixed space

12‧‧ ‧ cover

13‧‧‧ openings

20‧‧‧ ratchet parts

21‧‧‧ ratchet

30‧‧‧Sleeve fixing device

Claims (6)

A ratchet assembly having a rollable reversing support member, comprising: a casing having a hollow shape and forming a fixed space therein, and opening on each of opposite sides of the casing an opening communicating with the fixing space; a ratchet Correspondingly disposed in the fixed space and having a ratchet surface; a sleeve fixing device horizontally piercing the outer casing and correspondingly being engaged with the ratchet member, and comprising a sleeve positioning member, a rotating member, a reversing support member and a pawl block, the sleeve positioning member is disposed in the fixing space of the outer casing, and protrudes from one of the openings of the outer casing at one end, the rotating member is rotatably corresponding to The locating member is disposed on the sleeve and has a protruding column, and a supporting member receiving hole is disposed in the radial direction of the rotating column. The rotating supporting member is correspondingly disposed on the supporting member of the rotating member. The device is provided with a spring sleeve, a spring and a ball, and the spring is disposed at one end of the spring sleeve, and the ball is rotatably disposed on the elastic sleeve. One end of the spring, the pawl block is pivoted on the The cartridge positioning member, and to one side of the clamping ball to the change of the support member, and one end of the pawl block corresponds to the clamping surface of the ratchet tooth of the ratchet member. The ratchet assembly of claim 1, wherein the elastic sleeve forms a bead groove at one end of the ball, and the ball is rotatably disposed in the bead groove. Inside. A ratchet assembly having a rollable reversing support as claimed in claim 2, wherein the ball is placed in the bead groove. A ratchet assembly having a rollable reversing support as claimed in claim 2, wherein the ball is rotatably fitted in the bead groove and is in a convex state. A ratchet assembly having a rollable reversing support member according to any one of claims 1 to 4, wherein the sleeve positioning member has a column-shaped rotating portion, and one end of the rotating portion is provided at one end. Providing a hole, the rotating member includes a rotating disk connected to the rotating column, the rotating column is a hollow cylinder, the rotating disk is rotatably abutted against the rotating portion, and the rotating column is extended to the mounting hole. A ratchet assembly having a rollable reversing support member according to claim 5, wherein the sleeve positioning member defines a longitudinally extending receiving groove on an outer side of the rotating portion, and a through hole is formed on the outer side of the rotating portion. The pawl block is disposed in the accommodating groove and is pivotally disposed on the pivoting rod.