TW201817547A - Ratchet wheel assembly with rolling support structure prolongs the service life of spring - Google Patents

Abstract

The invention relates to a ratchet wheel assembly with rolling support structure, which comprises a shell and a sleeve fixing device, the sleeve fixing device penetrates through the shell and comprises a sleeve positioning piece, a rotating piece, and a reversing support piece. The sleeve positioning piece is arranged in the fixed space of the shell. The sleeve positioning piece comprises a rotating part, the rotating piece is rotatably arranged on the rotating part in a penetrating manner. The reversing support piece is arranged on the rotating piece in a penetrating manner and comprises a springing sleeve, a rolling ball, a spring, and an abutting part. The rolling ball is rotatably arranged at one end of the springing sleeve. The spring is arranged at one end different from the end having the rolling ball. The abutting part extends into the end of springing sleeve with the spring, and the abutting part is sleeved onto the spring, so that the service life of spring can be effectively prolonged.

Description

Ratchet assembly with rollable support structure

The present invention relates to a ratchet assembly, and more particularly to a ratchet assembly having a rollable support structure.

The ratchet wrench is provided with a ratchet member inside, which is convenient for the user to tighten or loosen the positioning member such as the nut. The ratchet member of the ratchet wrench has a reversing support member, and the reversing support member is integrated. Formed and formed into a semi-spherical shape at one end, the reversing support member will continue to wear against the ratchet member during use.

In order to avoid the lack of service life caused by wear of the reversing support during use, the applicant has a rotatable ball at the front end of the reversing support member in the Chinese Patent No. I535540. The ratchet member is rotationally slid in the actuating position to achieve the purpose of increasing the service life. However, in the aforementioned patent, one end of the spring directly abuts against the wall surface of the mounting hole of the sleeve positioning member, so that the spring is long. After the time is used, since the spring directly abuts against the wall surface of the mounting hole of the sleeve positioning member, the spring is prone to distortion and deformation, so the existing ratchet assembly having the rollable support structure is indispensable for improvement.

In order to solve the existing ratchet assembly with a rollable support structure, the spring directly abuts against the wall surface of the mounting hole of the sleeve positioning member during use, and the spring is easily deformed, and the main object of the present invention is to provide The invention relates to a ratchet assembly with a rollable support structure. The invention mainly provides an abutting member at one end of the spring and the wall surface of the mounting hole, so that the spring does not directly abut against the wall surface of the mounting hole during the rotating process, and can effectively Extend the life of the spring.

The present invention solves the prior art problem and has a ratchet assembly having a rollable support structure, comprising: a casing having a hollow shape and a fixed space formed therein, the opposite sides of the casing respectively penetrating through an opening, Both of the openings are in communication with the fixed space; a ratchet member correspondingly disposed in the fixed space of the outer casing, and a circumferential surface of the ratchet member is formed with a circumferential ratchet surface; and a sleeve is fixed The sleeve fixing device horizontally penetrates the outer casing and is correspondingly engaged with the ratchet member, and includes a sleeve positioning member, a rotating member, a reversing support member and a pawl block, the sleeve positioning The sleeve is disposed in the fixed space of the outer casing and protrudes from the opening of the outer casing at one end. The sleeve positioning member includes a rotating portion, and a side surface of the rotating portion is concavely disposed with a mounting hole, and the rotating member is rotatably disposed In the rotating portion, the reversing support member is disposed on the rotating member and includes a spring sleeve, a rolling ball, a spring and an abutting member, and the rolling ball is rotatably disposed One end of the spring sleeve is disposed at an end different from the one provided with the rolling ball, the abutting member extends into one end of the spring sleeve provided with a spring, and is sleeved on the spring, the spine The claw block is pivotally disposed on the sleeve positioning member, and the rolling ball is clamped on the inner side of the reversing support member, and one end of the pawl block is correspondingly engaged with the ratchet surface of the ratchet member.

The foregoing ratchet assembly having a rollable support structure, wherein the abutting member includes an abutting sleeve and an abutting ball, one end of the spring projects into and abuts against the abutting sleeve, the abutting circle The bead is rotatably disposed on the abutting sleeve, and the abutting ball is rotatably abutted against the mounting hole of the sleeve positioning member.

The ratchet assembly having a rollable support structure, wherein one end of the abutting sleeve is recessed to form a receiving groove, and one end of the spring projects into and abuts against the receiving groove of the abutting sleeve, the abutting sleeve An end of the cylinder different from the receiving groove is recessed to form a ball-shaped groove, and the abutting ball is rotatably disposed on the abutting groove of the abutting sleeve.

The foregoing ratchet assembly having a rollable support structure, wherein the abutting member is a cylindrical tubular body, and one end of the abutting member is recessed to form a receiving groove, and one end of the spring projects into and abuts against the abutting In the receiving groove of the piece, the abutting member is convexly formed at one end of the receiving groove to form an abutting flange, and the abutting flange abuts against the mounting hole of the sleeve positioning member.

The foregoing ratchet assembly having a rollable support structure, wherein the inner side of the pawl block is formed in a wave shape and has three concave arc-shaped positioning grooves, and the reversing support member is correspondingly engaged with one of the pawl blocks. Positioning slot.

The effect obtained by the technical means of the present invention is improved by: the design of the abutting member of the present invention is such that the abutting ball of the abutting member is rotatably abutted against the mounting hole of the sleeve positioning member, or The abutting member directly abuts against the mounting hole of the sleeve positioning member, so that one end of the spring directly abuts against the mounting hole of the sleeve positioning member, thereby improving the service life of the spring.

In order to understand the technical features and practical effects of the present invention in detail, and in accordance with the present invention, further details are shown in the following preferred embodiments.

A first preferred embodiment of a ratchet assembly having a rollable support structure according to the present invention is shown in FIGS. 1 and 2, the ratchet assembly including a housing 10, a ratchet member 20, and a sleeve securing device 30. among them:

As shown in FIG. 1 , the outer casing 10 has a hollow shape and a fixed space 11 is formed therein. The top of the outer casing 10 is provided with a cover 12 . The front and rear sides of the outer casing 10 respectively have an opening 13 . The openings 13 are all in communication with the fixed space 11.

As shown in FIGS. 1 and 2, the ratchet member 20 is disposed in the fixed space 11 of the outer casing 10, and a circumferential ratchet surface 21 is formed on the inner circumferential surface of the ratchet member 20.

As shown in FIG. 1 to FIG. 3, the sleeve fixing device 30 horizontally penetrates the outer casing 10 and is correspondingly engaged with the ratchet member 20, and includes a sleeve positioning member 31, a rotating member 32, and a reversing direction. The support member 33 and a pawl block 34 are disposed in the fixed space 11 of the outer casing 10. The sleeve positioning member 31 includes a rotating portion 311 and a pivoting rod 312. The rotating portion 311 is a a cylindrical body having a cylindrical shape, a side of the rotating portion 311 is recessed in the center of the outer surface of the rotating portion 311, and an outer circumferential surface of the rotating portion 311 defines a semi-circular receiving groove 314 extending in the axial direction. A receiving port 315 is formed between the receiving slot 314 and the mounting hole 313. The rotating portion 311 is axially convexly disposed with a sleeve positioning portion 316 on a side of the mounting hole 313. The rod 312 is disposed in the receiving groove 314 of the rotating portion 311.

The rotating member 32 is disposed in the mounting hole 313 of the rotating portion 311 and includes a rotating disk 321 and a rotating column 322 rotatably abutting against an end surface of the rotating portion 311. The 322 is integrally connected to one side of the rotating disk 321 . The rotating column 322 is a hollow cylinder. The outer circumferential surface of the rotating column 322 is radially provided with a supporting member receiving hole 323 .

The reversing support member 33 is disposed in the support receiving hole 323 of the rotating member 32, and is passed through the connecting port 315 of the rotating portion 311, and includes a spring sleeve 331 and a rolling ball 332. a spring 333 and an abutting member 334. The elastic sleeve 331 is a cylindrical cylinder. One end of the elastic sleeve 331 is recessed with a spring slot 3311. The spring sleeve 331 is different from the spring. One end of the groove 3311 defines a bead groove 3312. The elastic sleeve 331 is disposed at a support receiving hole 323 of the rotating column 322. The rolling ball 332 can be rotated. The spring ball 333 is disposed in the spring groove 3311 of the spring sleeve 331, and the spring ball 333 is disposed in the spring groove 3311 of the spring sleeve 331. One end of the spring 333 abuts against the spring sleeve 331. The abutting member 334 extends into the spring slot 3311 of the spring sleeve 331 and is sleeved on the spring 333. In the first preferred embodiment, The abutting member 334 includes an abutting sleeve 335 and abutting ball 336. The abutting sleeve 335 is a cylindrical tubular body, and one end of the abutting sleeve 335 is recessed. The receiving groove 3351 is formed such that the other end of the spring 333 protrudes into and abuts against the receiving groove 3351 of the abutting sleeve 335. The abutting sleeve 335 is concavely formed at one end of the receiving groove 3351 to form an offset. By the ball groove 3352, the abutting ball 336 is rotatably disposed on the abutting groove 335 of the abutting sleeve 335, and the abutting ball 336 is in a state of protruding only at one end, so that the abutting The ball 336 is rotatably abutted against the mounting hole 313 of the sleeve positioning member 31.

The pawl block 34 is disposed in the accommodating groove 314, and is pivotally disposed on the pivoting rod 312. 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, and the inner side surface of the pawl block 34 is formed in a wave shape and has three concave arc-shaped positioning grooves 342, and the reversing support member 33 is The rolling ball 332 elastically corresponds to one of the positioning grooves 342 of the pawl block 34. The positioning groove 342 is designed to make the inner side of the pawl block 34 and the rolling ball 332 more stable. system.

As shown in FIG. 4, when the operation of the present invention is used, the reversing support member 33 of the sleeve fixing device 30 abuts against one of the positioning grooves 342 on the inner side of the pawl block 34, so that the pawl block 34 pivotally swings, and The pawl block 34 is correspondingly engaged with the ratchet surface 21 of the ratchet member 20 by one of the tooth flanks 341. The clock surface 341 of the upper end of the ratchet block 34 abuts against the ratchet member 20. The ratchet surface 21, when the sleeve positioning member 31 rotates clockwise, the abutting ball 336 of the abutting member 334 is rotated by the force, the abutting ball 336 and the design of the abutting sleeve 335 Therefore, one end of the spring 333 does not directly contact the mounting hole 313 of the sleeve positioning member 31 during the rotation, and the service life of the spring 333 is raised.

As shown in FIG. 5, 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 abutting member 334 of the present invention is configured such that the abutting ball 336 of the abutting member 334 is rotatably abutted against the mounting hole 313 of the sleeve positioning member 31, so that one end of the spring 333 can be directly reduced. The installation hole 312 of the sleeve positioning member 31 is used to lift the service life of the spring 333.

As shown in FIG. 6, the structural design of the embodiment is substantially the same as that of the first preferred embodiment. The difference between the embodiment is that the abutting member 334A is cylindrical. One end of the abutting member 334A is recessed to form a receiving groove 3341A, such that the other end of the spring 333 projects into and abuts in the receiving groove 3341A of the abutting member 334A, and the abutting member 334A is different from the receiving member 334A. One end of the receiving groove 3341A is formed with an abutting flange 3342A, and the abutting flange 3342A has a semi-spherical shape. The abutting flange 3342A abuts against the mounting hole 313 of the sleeve positioning member 31. The operation process and the function of the second preferred embodiment of the present invention are the same as those of the first preferred embodiment, and are not described again.

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‧‧‧ pivot rod
313‧‧‧Installation holes
314‧‧‧ accommodating slots
315‧‧‧Connecting port
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‧‧‧ rolling beads
333‧‧ ‧ spring
334‧‧‧Attendance
335‧‧‧Abutment sleeve
3351‧‧‧ accommodating slot
3352‧‧‧Attend the ball groove
336‧‧‧Attend the ball
34‧‧‧Pawl block
341‧‧‧ tooth surface
342‧‧‧ positioning slot

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exploded view of a first preferred embodiment of the present invention. Figure 2 is an exploded view of the sleeve fixing device of the first preferred embodiment of the present invention. Figure 3 is an exploded view of the rotary member and the reversing support member of the first preferred embodiment of the present invention. Figure 4 is a view showing the state of use of the clockwise rotation of the first preferred embodiment of the present invention. Fig. 5 is a view showing a state of use of the first preferred embodiment of the present invention in a counterclockwise rotation. Figure 6 is a cross-sectional front view of a second preferred embodiment of the present invention.

Claims (5)

A ratchet assembly having a rollable support structure, comprising: a casing having a hollow shape and a fixed space formed therein, the opposite sides of the casing respectively having an opening, the two openings being connected to the fixed space a ratchet member correspondingly disposed in a fixed space of the outer casing, wherein a circumferential surface of the ratchet member is formed with a circumferential ratchet surface; and a sleeve fixing device, the sleeve fixing device is horizontal The outer casing is disposed and correspondingly engaged with the ratchet member, and includes a sleeve positioning member, a rotating member, a reversing support member and a pawl block, wherein the sleeve positioning member is disposed in the fixing space of the outer casing And one end of the sleeve is extended from the opening of the housing, the sleeve positioning member includes a rotating portion, and a side of the rotating portion is recessed in the center of the rotating portion, and the rotating member is rotatably disposed in the rotating portion. The support member is disposed on the rotating member and includes a spring sleeve, a rolling ball, a spring and an abutting member, the rolling ball is rotatably disposed at one end of the spring sleeve, the spring An abutting member is disposed at an end of the rolling ball, and the abutting member extends into one end of the elastic sleeve and is disposed on the spring, and the pawl block is pivotally disposed on the sleeve positioning member And rolling the ball on the inner side of the reversing support member, and one end of the pawl block is correspondingly engaged with the ratchet surface of the ratchet member. A ratchet assembly having a rollable support structure according to claim 1, wherein the abutting member includes an abutting sleeve and an abutting ball, one end of the spring extending into and abutting the abutting sleeve The abutting ball is rotatably disposed on the abutting sleeve, and the abutting ball is rotatably abutted against the mounting hole of the sleeve positioning member. A ratchet assembly having a rollable support structure according to claim 2, wherein one end of the abutting sleeve is recessed to form a receiving groove, and one end of the spring projects into and abuts against the receiving groove of the abutting sleeve. The abutting sleeve is concavely formed at one end of the receiving groove to form abutting against the ball groove, and the abutting ball is rotatably disposed on the abutting groove of the abutting sleeve. A ratchet assembly having a rollable support structure according to claim 1, wherein the abutting member is a cylindrical tubular body, and one end of the abutting member is recessed to form a receiving groove, and one end of the spring extends into and receives An abutting flange is formed on the receiving groove of the abutting member, and the abutting flange abuts against the mounting hole of the sleeve positioning member. A ratchet assembly having a rollable support structure according to any one of claims 1 to 4, wherein the inner side of the pawl block is undulated and has three concave arc-shaped positioning grooves, the reversing support member Corresponding to one of the positioning grooves of the pawl block.