One-way ratchet handle

Abstract

The utility model relates to a one-way ratchet handle, comprising a tool rod and a ratchet head, wherein the ratchet head comprises a pawl seat, a pawl and a ratchet seat, the pawl seat is mounted on the end of the tool rod, a pawl assembly groove for the pawl to move in or out along a direction perpendicular to the central axis of the pawl seat is opened on the outer side wall of the pawl seat, the pawl is mounted in the pawl assembly groove, a reset spring for pushing the pawl to extend out of the pawl assembly groove is arranged in the pawl assembly groove, the ratchet seat is rotatably mounted on a side of the pawl seat away from the tool rod through a first retaining spring, an inner gear ring is arranged on the inner wall of the pawl seat, and the inner gear ring is meshed and connected with the pawl; the one-way ratchet handle of the utility model has a compact structure, a simple processing technology, and is convenient and quick to assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of ratchet handles, in particular to a one-way ratchet handle. Background Art

[0002] The ratchet handle is a hardware tool, usually with tool heads of different shapes or used in conjunction with a series of sockets of different specifications. When working, it can achieve the purpose of single-load bearing and reverse idling for the tool head or socket.

[0003] At present, a conventional ratchet handle usually includes a tool rod and a ratchet head and a pawl arranged on the tool rod. An outer tooth ring is provided on the outer wall of the ratchet head, and the pawl is installed on one side of the ratchet head and meshes with the outer tooth ring. This structure not only requires sufficient space for installing the pawl at the end of the tool rod, but also is not compact enough. It also leads to an irregular shape of the tool rod end, which is difficult to process and causes a large amount of material waste. In addition, an irregularly shaped assembly groove needs to be processed on the inner wall of the tool rod to accommodate the pawl and allow the pawl to move. Not only is it difficult to process, but the pawl installation operation is also cumbersome.

[0004] Therefore, the utility model proposes a one-way ratchet handle to solve the above problem. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a one-way ratchet handle which is convenient for processing and for the installation and operation of the ratchet pawl.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a one-way ratchet handle, the innovation of which is: comprising a tool rod and a ratchet head;

[0007] The ratchet head includes a pawl seat, a pawl and a ratchet seat. The pawl seat is installed at the end of the tool rod. A pawl assembly groove is opened on the outer wall of the pawl seat for the pawl to move in or out along a direction perpendicular to the central axis of the pawl seat. The pawl is installed in the pawl assembly groove. A return spring is provided in the pawl assembly groove for pushing the pawl to extend out of the pawl assembly groove. The ratchet seat is rotatably installed on the side of the pawl seat away from the tool rod through a first retaining spring. An inner gear ring is provided on the inner wall of the pawl seat, and the inner gear ring is meshed with the pawl.

[0008] Furthermore, the pawl seat comprises a transition section, a first clip spring installation section and a pawl installation section which are sequentially connected and have gradually decreasing outer diameters;

[0009] The pawl assembly groove is formed on the outer wall of the pawl mounting section. A pawl axial limiting disk is provided on the side of the pawl mounting section away from the first retaining spring mounting section. The pawl is arranged in the pawl assembly groove. Both sides of the pawl are respectively fitted with the end surface of the pawl axial limiting disk and the end surface of the first retaining spring mounting section.

[0010] The ratchet seat movable sleeve is arranged on the outside of the first retaining spring mounting section, the pawl mounting section and the pawl axial limit disk. The outer wall of the first retaining spring mounting section and the inner wall of the ratchet seat are matched to form a groove for accommodating the first retaining spring. By installing the first retaining spring in the groove, the ratchet seat and the pawl seat are relatively fixed, and the pawl axial limit disk is limited between the first retaining spring mounting section and the ratchet seat.

[0011] Furthermore, a guide rod is provided on the pawl, and a guide groove matching the guide rod is opened on the bottom surface of the pawl assembly groove. The guide rod is movably arranged in the guide groove, and a return spring is sleeved on the outside of the guide rod. One end of the return spring is connected to the pawl, and the other end is connected to the bottom surface of the pawl assembly groove.

[0012] Furthermore, a hexagonal tool head is provided on a side of the ratchet seat away from the pawl seat.

[0013] Furthermore, a square sleeve joint is provided on the side of the ratchet seat away from the pawl seat, a limiting ball is provided on the side wall of the square sleeve joint, a limiting ball assembly groove for accommodating the limiting ball is opened on the side wall of the square sleeve joint, the limiting ball is installed in the limiting ball assembly groove, a limiting ball spring is provided in the limiting ball assembly groove, and the limiting ball partially protrudes out of the outside of the square sleeve joint under the action of the elastic force of the limiting ball spring.

[0014] Furthermore, a first cylindrical portion is provided at one end of the tool rod, and a first connecting groove for the first cylindrical portion to enter is opened on the end surface of the transition section away from the first retaining spring installation section. The first cylindrical portion is arranged in the first connecting groove and is rotatably connected to the transition section by a first bolt.

[0015] Furthermore, a first positioning groove, a second positioning groove and a third positioning groove are sequentially opened on the arc-shaped side wall of the first cylindrical part, a first positioning pin is provided in the transition section, a first pin groove is provided on the bottom surface of the first connecting groove, the first positioning pin is movably arranged in the first pin groove, a first positioning pin spring is provided in the first pin groove, and the first positioning pin is always pressed against the first cylindrical part under the action of the elastic force of the first positioning pin spring.

[0016] Furthermore, the one-way ratchet handle also includes a rotating handle, a second cylindrical portion is provided at the end of the tool rod away from the first cylindrical portion, a second connecting groove is opened on the end surface of the rotating handle for the second cylindrical portion to enter, the second cylindrical portion is arranged in the second connecting groove, and is rotatably connected to the tool rod by a second bolt, a rotating sleeve is provided on the outer movable sleeve of the rotating handle, and the rotating sleeve is rotatably mounted on the rotating handle by a second retaining spring.

[0017] Furthermore, a fourth positioning groove and a fifth positioning groove are formed on the arc-shaped side wall of the second cylindrical portion, a second positioning pin is formed in the rotating handle, a second pin groove is formed on the bottom surface of the second connecting groove, the second positioning pin is movably disposed in the second pin groove, a second positioning pin spring is formed in the second pin groove, and the second positioning pin is always pressed against the second cylindrical portion under the elastic force of the second positioning pin spring;

[0018] When the rotary handle is rotated to make the second positioning pin enter the fourth positioning groove, and the tool rod is rotated to make the first positioning pin enter the first positioning groove or the third positioning groove, the one-way ratchet handle is in an L-shaped long-arm working state;

[0019] When the rotary handle is rotated to make the second positioning pin enter the fourth positioning groove, and the tool rod is rotated to make the first positioning pin enter the second positioning groove, the one-way ratchet handle is in an I-shaped working state;

[0020] When the rotary handle is rotated to make the second positioning pin enter the fifth positioning groove, and the tool rod is rotated to make the first positioning pin enter the first positioning groove, the one-way ratchet handle is in a Z-shaped working state;

[0021] When the rotary handle is rotated to make the second positioning pin enter the fifth positioning groove, and the tool rod is rotated to make the first positioning pin enter the second positioning groove, the one-way ratchet handle is in an L-shaped short lever arm working state;

[0022] When the rotary handle is rotated to make the second positioning pin enter the fifth positioning groove, and the tool rod is rotated to make the first positioning pin enter the third positioning groove, the one-way ratchet handle is in an N-shaped working state.

[0023] The advantages of the utility model are:

[0024] The one-way ratchet handle of the utility model is provided with a pawl seat on one side of the tool rod for installing the pawl, which simplifies the structure of the tool rod and its processing steps. In addition, compared with slotting the inner wall of the tool rod, the pawl assembly groove is provided on the outer wall of the pawl seat, and the processing process is simpler. In addition, since the pawl is arranged inside the ratchet seat and meshes with the inner gear ring, the structure of the one-way ratchet handle is more compact. When installing the one-way ratchet handle, the reset spring and the pawl are placed in the ratchet assembly groove in sequence, and then the retaining spring and the ratchet seat are installed. The assembly is convenient and quick.

[0025] The utility model can not only axially limit the pawl by arranging the axial limiting disk of the pawl, but also reduce the machining accuracy of the inner end face of the ratchet seat and the end faces of the pawl and the pawl installation section, thereby reducing the machining difficulty.

[0026] The utility model provides a guide rod on the ratchet, and the guide rod is arranged in a guide groove, so that the ratchet is guided when the ratchet moves, so that the movement of the ratchet is more stable.

[0027] The utility model provides three positioning grooves on the first cylindrical part and cooperates with the first positioning pin. When the first positioning pin enters the positioning groove at the corresponding position, the one-way ratchet handle can stably maintain the corresponding working state.

[0028] The utility model provides a rotating handle, and a rotating sleeve is rotatably sleeved on the outer side of the rotating handle, so that the user can push the tool rod to rotate more conveniently.

[0029] In the utility model, two positioning grooves are provided on the second cylindrical part, and matched with the three positioning grooves of the first cylindrical part, so that the one-way ratchet handle can be switched among five working states, namely, L-shaped long lever arm, I-shaped, Z-shaped, L-shaped short lever arm, and N-shaped, and the corresponding working states can be maintained unchanged to meet the requirements of different working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] Figure 1 It is an axial cross-sectional view of the ratchet head of the one-way ratchet handle of the utility model.

[0032] Figure 2 It is a radial cross-sectional view of the ratchet head of the utility model at the pawl.

[0033] Figure 3 This is a schematic structural diagram of the one-way ratchet handle of Example 1.

[0034] Figure 4 This is a schematic structural diagram of the one-way ratchet handle of Example 2.

[0035] Figure 5 This is a schematic structural diagram of the one-way ratchet handle of Example 3.

[0036] Figure 6 This is an axial cross-sectional view of the one-way ratchet handle of Example 3. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] like Figure 1-2 The one-way ratchet handle shown comprises a tool rod and a ratchet head, wherein the ratchet head comprises a pawl seat 11 , a pawl 12 and a ratchet seat 13 .

[0040] The pawl seat 13 is installed at the end of the tool rod. The ratchet seat 13 is integrally formed and includes a transition section, a first retaining spring installation section and a pawl installation section which are connected in sequence and have gradually decreasing outer diameters. A first cylindrical portion is provided at one end of the tool rod. A first connecting groove for the first cylindrical portion to enter is provided on the end surface of the transition section away from the first retaining spring installation section. The first cylindrical portion is arranged in the first connecting groove and is rotatably connected to the transition section through a first bolt. A pawl assembly groove 111 is provided on the outer wall of the pawl installation section for the pawl 12 to move in or partially move out in a direction perpendicular to the central axis of the pawl seat 11. The pawl 12 is installed in the pawl assembly groove 111. A return spring 17 for pushing the pawl 12 out of the pawl assembly groove 111 is provided in the pawl assembly groove 111. In order to make the movement of the pawl more stable, a guide rod 16 is provided on the pawl 12, and a guide groove 112 matching the guide rod 16 is provided on the bottom surface of the pawl assembly groove 111. The guide rod 16 is movably arranged in the guide groove 112, and the return spring 17 is sleeved on the outside of the guide rod 16. One end of the return spring 17 is connected to the pawl 12, and the other end is connected to the bottom surface of the pawl assembly groove 111. A pawl axial limiting disk 14 is provided on the side of the pawl mounting section away from the first retaining spring mounting section. The two sides of the pawl 12 are respectively fitted with the end surface of the pawl axial limiting disk 14 and the end surface of the first retaining spring mounting section. The pawl axial limiting disk 14 axially limits the pawl, and at the same time can reduce the machining accuracy of the inner end surface of the ratchet seat 13 and the end surfaces of the pawl 12 and the pawl mounting section, and the pawl axial limiting disk 14 performs size compensation, thereby reducing the machining difficulty.

[0041] The ratchet seat 13 is rotatably installed on the side of the pawl seat 11 away from the tool rod through the first retaining spring 15. The ratchet seat 13 is movably sleeved on the outside of the first retaining spring mounting section, the pawl mounting section and the pawl axial limit disk 14. The outer wall of the first retaining spring mounting section and the inner wall of the ratchet seat are matched to form a groove for accommodating the first retaining spring 15. By installing the first retaining spring 15 in the groove, the ratchet seat 13 and the pawl seat 11 are relatively fixed, and the pawl axial limit disk 14 is limited between the first retaining spring mounting section and the ratchet seat 13. An inner gear ring 121 is provided on the inner wall of the pawl seat 12, and the inner gear ring 121 is meshed and connected with the pawl 12.

[0042] The one-way ratchet handle is provided with a pawl seat on one side of the tool rod for installing the pawl, which simplifies the structure of the tool rod and its processing process. In addition, compared with slotting the inner wall of the tool rod, the pawl assembly groove is opened on the outer wall of the pawl seat, and the processing process is simpler. In addition, since the pawl is arranged inside the ratchet seat and meshes with the inner gear ring, the structure of the one-way ratchet handle is more compact. When installing the one-way ratchet handle, the reset spring and the pawl are placed in the pawl assembly groove in sequence, and the retaining spring and the ratchet seat are installed. The assembly is convenient and quick. Example

[0043] like Figure 3 As shown, the tool rod is an integrally formed round rod structure, and a hexagonal tool head is integrally formed on the side of the ratchet seat 13 away from the pawl seat 11. The one-way ratchet handle of this embodiment is used for installing and removing the hexagonal screws. Example

[0044] like Figure 4 As shown, the tool rod is an integrally formed round rod structure, a square sleeve joint is provided on the side of the ratchet seat 13 away from the pawl seat 11, a limiting ball is provided on the side wall of the square sleeve joint, a limiting ball assembly groove for accommodating the limiting ball is opened on the side wall of the square sleeve joint, the limiting ball is installed in the limiting ball assembly groove, a limiting ball spring is provided in the limiting ball assembly groove, and the limiting ball partially protrudes out of the outside of the square sleeve joint under the elastic force of the limiting ball spring. The one-way ratchet handle of this embodiment is used in conjunction with a series of sleeves of different specifications. Example

[0045] like Figure 5-6 As shown, the one-way ratchet handle also includes a rotating handle 2, a second cylindrical portion is provided at one end of the tool rod away from the first cylindrical portion, a second connecting groove for the second cylindrical portion to enter is provided on the end surface of the rotating handle 2, the second cylindrical portion is arranged in the second connecting groove, and is rotatably connected to the tool rod through a second bolt, a rotating sleeve 3 is provided on the outer movable sleeve of the rotating handle 2, the rotating sleeve 3 is rotatably mounted on the rotating handle 2 through a second retaining spring, a second retaining groove is formed in the inner wall of the rotating sleeve 3 and the outer wall of the rotating handle 2, and the second retaining spring is installed in the second retaining groove, so as to achieve relative fixation between the rotating sleeve 3 and the rotating handle 2. In this embodiment, the tool rod is an integrally formed square rod-shaped structure, and a hexagonal tool head is integrally formed on the side of the ratchet seat 13 away from the pawl seat 11. The one-way ratchet handle of this embodiment is used for installing and removing hexagonal screws, and by providing a rotating handle, the user can more conveniently push the tool rod to rotate, and the grip is more comfortable.

[0046] In this embodiment, the first positioning groove C1, the second positioning groove C2 and the third positioning groove C3 are sequentially opened on the arc-shaped side wall of the first cylindrical portion, a first positioning pin X1 is provided in the transition section, a first pin groove is opened on the bottom surface of the first connecting groove, the first positioning pin X1 is movably arranged in the first pin groove, a first positioning pin spring is arranged in the first pin groove, and the first positioning pin X1 is always pressed against the first cylindrical portion under the elastic force of the first positioning pin spring; the fourth positioning groove C4 and the fifth positioning groove C5 are opened on the arc-shaped side wall of the second cylindrical portion, a second positioning pin X2 is provided in the rotating handle 2, a second pin groove is opened on the bottom surface of the second connecting groove, the second positioning pin X2 is movably arranged in the second pin groove, a second positioning pin spring is arranged in the second pin groove, and the second positioning pin X2 is always pressed against the second cylindrical portion under the elastic force of the second positioning pin spring.

[0047] The one-way ratchet handle of this embodiment has five working states, and the five working states can be switched by rotating the handle and the tool rod to meet different working environment requirements, as detailed below:

[0048] When the rotary handle is rotated to make the second positioning pin X2 enter the fourth positioning groove C4, and the tool rod is rotated to make the first positioning pin X1 enter the first positioning groove C1 or the third positioning groove C3, the one-way ratchet handle is in an L-shaped long-arm working state;

[0049] When the rotary handle is rotated to make the second positioning pin X2 enter the fourth positioning groove C4, and the tool rod is rotated to make the first positioning pin X1 enter the second positioning groove C2, the one-way ratchet handle is in an I-shaped working state;

[0050] When the rotary handle is rotated to make the second positioning pin X2 enter the fifth positioning groove C5, and the tool rod is rotated to make the first positioning pin X1 enter the first positioning groove C1, the one-way ratchet handle is in a Z-shaped working state;

[0051] When the rotary handle is rotated to make the second positioning pin X2 enter the fifth positioning groove C5, and the tool rod is rotated to make the first positioning pin X1 enter the second positioning groove C2, the one-way ratchet handle is in an L-shaped short lever arm working state;

[0052] When the rotary handle is rotated to make the second positioning pin X2 enter the fifth positioning groove C5, and the tool rod is rotated to make the first positioning pin X1 enter the third positioning groove C3, the one-way ratchet handle is in an N-shaped working state.

[0053] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A one-way ratchet handle, characterized in that: Includes tool bar and ratchet head; The ratchet head comprises a pawl seat, a pawl and a ratchet seat, the pawl seat is mounted on the end of the tool rod, a pawl assembly groove is provided on the outer wall of the pawl seat for the pawl to move in or out along a direction perpendicular to the central axis of the pawl seat, the pawl is mounted in the pawl assembly groove, a return spring for pushing the pawl out of the pawl assembly groove is provided in the pawl assembly groove, the ratchet seat is rotatably mounted on the side of the pawl seat away from the tool rod through a first retaining spring, an inner gear ring is provided on the inner wall of the pawl seat, and the inner gear ring is meshed with the pawl; The pawl seat comprises a transition section, a first clip spring installation section and a pawl installation section which are connected in sequence and have gradually decreasing outer diameters; The pawl assembly groove is formed on the outer wall of the pawl mounting section. A pawl axial limiting disk is provided on the side of the pawl mounting section away from the first retaining spring mounting section. The pawl is arranged in the pawl assembly groove. Both sides of the pawl are respectively fitted with the end surface of the pawl axial limiting disk and the end surface of the first retaining spring mounting section. The ratchet seat movable sleeve is arranged on the outside of the first retaining spring mounting section, the pawl mounting section and the pawl axial limit disk. The outer wall of the first retaining spring mounting section and the inner wall of the ratchet seat are matched to form a groove for accommodating the first retaining spring. By installing the first retaining spring in the groove, the ratchet seat and the pawl seat are relatively fixed, and the pawl axial limit disk is limited between the first retaining spring mounting section and the ratchet seat.

2. The one-way ratchet handle according to claim 1, characterized in that: The pawl is provided with a guide rod, and the bottom surface of the pawl assembly groove is provided with a guide groove matching the guide rod. The guide rod is movably arranged in the guide groove, and a return spring is sleeved on the outside of the guide rod. One end of the return spring is connected to the pawl, and the other end is connected to the bottom surface of the pawl assembly groove.

3. The one-way ratchet handle according to claim 2, characterized in that: A hexagonal tool head is arranged on one side of the ratchet seat away from the pawl seat.

4. The one-way ratchet handle according to claim 2, characterized in that: A square sleeve joint is provided on the side of the ratchet seat away from the pawl seat, a limiting ball is provided on the side wall of the square sleeve joint, a limiting ball assembly groove for accommodating the limiting ball is opened on the side wall of the square sleeve joint, the limiting ball is installed in the limiting ball assembly groove, a limiting ball spring is provided in the limiting ball assembly groove, and the limiting ball partially protrudes out of the outside of the square sleeve joint under the elastic force of the limiting ball spring.

5. The one-way ratchet handle according to claim 3 or 4, characterized in that: A first cylindrical portion is provided at one end of the tool rod, and a first connecting groove for the first cylindrical portion to enter is opened on the end surface of the transition section away from the first retaining spring installation section. The first cylindrical portion is arranged in the first connecting groove and is rotatably connected to the transition section through a first bolt.

6. The one-way ratchet handle according to claim 5, characterized in that: The arc-shaped side wall of the first cylindrical part is provided with a first positioning groove, a second positioning groove and a third positioning groove in sequence, a first positioning pin is provided in the transition section, a first pin groove is provided on the bottom surface of the first connecting groove, the first positioning pin is movably arranged in the first pin groove, a first positioning pin spring is provided in the first pin groove, and the first positioning pin is always pressed against the first cylindrical part under the elastic force of the first positioning pin spring.

7. The one-way ratchet handle according to claim 6, characterized in that: The one-way ratchet handle also includes a rotating handle, a second cylindrical portion is provided at one end of the tool rod away from the first cylindrical portion, a second connecting groove is opened on the end surface of the rotating handle for the second cylindrical portion to enter, the second cylindrical portion is arranged in the second connecting groove, and is rotatably connected to the tool rod by a second bolt, a rotating sleeve is movably sleeved on the outer side of the rotating handle, and the rotating sleeve is rotatably mounted on the rotating handle by a second retaining spring.

8. The one-way ratchet handle according to claim 7, characterized in that: A fourth positioning groove and a fifth positioning groove are provided on the arc-shaped side wall of the second cylindrical portion, a second positioning pin is provided in the rotating handle, a second pin groove is provided on the bottom surface of the second connecting groove, the second positioning pin is movably arranged in the second pin groove, a second positioning pin spring is provided in the second pin groove, and the second positioning pin is always pressed against the second cylindrical portion under the elastic force of the second positioning pin spring; When the rotary handle is rotated to make the second positioning pin enter the fourth positioning groove, and the tool rod is rotated to make the first positioning pin enter the first positioning groove or the third positioning groove, the one-way ratchet handle is in an L-shaped long-arm working state; When the rotary handle is rotated to make the second positioning pin enter the fourth positioning groove, and the tool rod is rotated to make the first positioning pin enter the second positioning groove, the one-way ratchet handle is in an I-shaped working state; When the rotary handle is rotated to make the second positioning pin enter the fifth positioning groove, and the tool rod is rotated to make the first positioning pin enter the first positioning groove, the one-way ratchet handle is in a Z-shaped working state; When the rotary handle is rotated to make the second positioning pin enter the fifth positioning groove, and the tool rod is rotated to make the first positioning pin enter the second positioning groove, the one-way ratchet handle is in an L-shaped short lever arm working state; When the rotary handle is rotated to make the second positioning pin enter the fifth positioning groove, and the tool rod is rotated to make the first positioning pin enter the third positioning groove, the one-way ratchet handle is in an N-shaped working state.

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