JP3093667U - Ratchet spanner - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a ratchet pitch. The drive mainly includes a grip, has a drive unit at the other end of the grip, installs a ratchet in the drive unit, forms an installation groove outside the drive unit, and connects a control block to the installation groove. Installed, the control block controls the ratchet of the driving part under the action of the elastic piece, the ratchet has an inner peripheral part and an outer peripheral part, and the inner peripheral part fits and drives a workpiece such as a nut. A fitting hole is formed, an outer peripheral portion is provided with a ratchet, and an angle formed between tooth ridges of the ratchet and a center point of the ratchet is 2 to 4 degrees, and the control block is a control pitch opposed to the ratchet. The angle between the control pitches is larger than the ratchet pitch, and the pitch is lower than the ratchet pitch.

Description

[Detailed description of the invention]     [0001]   [Technical field to which the invention belongs]   The present invention relates to the structure of a ratchet wrench, which is located between the peaks of the ratchet pit. The angle of 2 to 4 degrees from the center point of the ratchet. The control block has a control pitch corresponding to the ratchet pitch. The pitch-to-pitch face angle is larger than the angle between the ratchet pitches and Is lower than the height between the ratchet pitches and thus the largest mating surface Pertains to a ratchet spanner that reaches the product.   [0002]   [Prior art]   As shown in FIG. 1, a known ratchet spanner mainly includes a spanner body and a ratchet spanner. , A control block 21, and a control block component 22, An installation room 11 is provided at the end of the spanner body 10, and a control tank 12 is formed on a side surface of the installation room 11. The control tank 12 and the installation room 11 are in communication with each other. 0 and a control block 21 is set in the control tank 12 so that the control block 21 is engaged with the control block 21 and the control is performed. A control block part 22 is installed in the tank 12 and the fixed ring 13 is used to The ratchet 20 is fixed in the installation room 11 of the main body 10.   As shown in FIGS. 3 and 4, the control block 21 is arranged to face the ratchet 20. The control pitch 211 is mixed with the ratchet pitch 201 of the ratchet 20 and meshed. If the teeth of the ratchet pitch of the ratchet 20 that move in tandem are too few, both There is a gap between them, which reduces the torque of the spanner and makes it easier for teeth to spill. If the number of ratchet pitches of the ratchet 20 is too large, the tooth portion becomes thicker. Insufficient engaging force causes slipping easily and the load cannot be applied. Pana torque decreases.     [0003]   [Problems to be solved by the invention] In order to solve the above-mentioned disadvantages of the known structure, the present invention minimizes the torque of the ratchet spanner. It is an object to provide a ratchet spanner having a structure for increasing the size.     [0004]   [Means for Solving the Problems]   In order to solve the above problems, the present invention provides the following ratchet spanner. main The torque increases due to the mixing ratio of the ratchet and the control block. Improve the function of Chet Spanner.     [0005]   [Embodiment of the invention]   As shown in FIGS. 5 and 6, the grip 30 and the drive unit 3 provided at the end of the grip 30 1 has a ratchet 40,   An installation groove 32 is formed at the end of the drive unit 31, and a control block 50 is installed in the installation groove 32. Then, the control block 50 controls the ratchet of the drive unit 31 under the action of the elastic piece 34. And     The ratchet 40 has an inner peripheral portion 41 and an outer peripheral portion 42, and the inner peripheral portion 41 has a nut. To form a nut fitting hole 411 for fitting and driving   The outer peripheral portion 42 has a ratchet pitch 43, and the ratchet pitch 43 The interval between the tooth ridges is an angle a formed from the center point of the ratchet 40, and the angle is 2 Between 4 and 4 degrees is optimal,   The control block 50 is opposed to the ratchet 40 and has a control pitch 51, The angle b of the teeth of the control pitch 51 is larger than the angle c of the teeth of the ratchet pitch 43. And the pitch d is lower than the pitch D of the ratchet 43, The pitch 43 and the control pitch 51 of the control block 50 reach the maximum meshing area. At the same time, the design has the largest number of pitches.     [0006]   [Effect of the invention] As described above, the control block 50 and the control pitch 51 have a structure in which they are meshed with each other. Designing a specific angle by achieving a strong torque with a large engagement area The maximum number of ratchet and control block engagement pitches is achieved The ratchet pitch at an angle of Improve the structural function of the spanner.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded external view of a known ratchet spanner. FIG. 2 is a structural diagram of a known ratchet spanner. FIG. 3 is a local view of a known ratchet pitch embodiment. FIG. 4 is a local view of a known ratchet pitch embodiment. FIG. 5 is a structural sectional view of the present invention. FIG. 6 is a local sectional view of the structure of the present invention. FIG. 7 is a diagram illustrating a ratchet / pitch engagement state according to the present invention. [Description of Signs] 10 Spanner main body 20 Installation groove 12 Control tank 13 Fixing matter 20 Ratchet 201 Ratchet pitch 21 Control block 22 Control block component 30 Grip 31 Drive unit 32 Installation groove 34 Elastic piece 40 Ratchet 41 Inner peripheral part 411 Nut fitting Hole 42 Outer peripheral part 43 Ratchet pitch 50 Control block 51 Control pitch

Claims (1)

[Claim 1] A utility model mainly includes a grip, a drive unit is provided at an end of the grip, a ratchet is installed on the drive unit, and an installation groove opening outside the drive unit is formed. A control block is provided in the installation groove, and the control block controls the ratchet of the drive unit under the action of the elastic piece. The ratchet has an inner peripheral portion and an outer peripheral portion, the inner peripheral portion forms a nut fitting hole for fitting and driving a workpiece such as a nut, and a ratchet pitch is provided in the outer peripheral portion. The angle formed by the pitch tooth peak interval and the ratchet center point is 2 degrees to 4 degrees, and the control block is provided with a control pitch relative to the ratchet, and the angle between the control pitches is a ratchet.
A ratchet spanner wherein the pitch is slightly greater than the angle between the pitches, and the height of the pitch is not as high as the height of the ratchet pitch.