CN213439349U - Ratchet wrench - Google Patents

Abstract

A ratchet wrench comprising a wrench head and a shank having a first section fixedly connected to the wrench head and a second section rotatably connected to the first section, the second section being rotatable relative to the first section in a plane parallel to a radial plane of the wrench head. The handle part of the ratchet wrench is split into the first section and the second section which are rotationally connected, so that the size of the handle part of the ratchet wrench can be effectively shortened, and the corresponding bolt, screw or ratchet wheel type part can be installed or detached when the operation space is limited; and simultaneously, use the utility model discloses a device converts the power of push-and-pull around the second section into and makes first section pivoted power, can install or dismantle relevant part fast conveniently more.

Description

Ratchet wrench

Technical Field

The utility model belongs to the technical field of the equipment maintenance maintains, concretely relates to ratchet spanner.

Background

In the field of industrial equipment, connecting structures such as ratchets, bolts, screws and the like are widely applied, and in order to ensure the normal operation of mechanical equipment, the connecting structures also need to be periodically repaired and maintained, and related connecting structures need to be replaced when necessary. In practice, however, the requirements of the running space and precision of the equipment are limited, the connecting structures such as the ratchet wheels or the bolts and the screws on some structures have interference in the axial direction, and the operable space is particularly small; the space for the spanner to swing in the radial direction is also extremely small, and the connecting structure can not be disassembled under the condition that the relevant accessory device is not disassembled, so that great difficulty is brought to equipment maintenance. In the prior art, the screw is disassembled by connecting the sleeve, the universal joint and the connecting rod with the ratchet handle through direction change for several times. However, in current designs, when axial space is limited, a sleeve cannot be used; normal ratchet wrench oscillation is limited when radial space is limited.

Therefore, it is necessary to develop a new ratchet wrench, which can be adapted to the detachment of the connecting structure such as ratchet or bolt and screw in such a limited space.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a ratchet wrench, it can adapt to less dismantlement space, and convenient and fast dismantles connection structure such as ratchet or bolt and screw. The utility model aims at realizing through the following technical scheme:

a ratchet wrench comprising a wrench head and a shank having a first section fixedly connected to the wrench head and a second section rotatably connected to the first section, the second section being rotatable relative to the first section in a plane parallel to a radial plane of the wrench head. Adopt the utility model discloses a when parts such as ratchet spanner dismantles bolt, screw or ratchet, place the relevant position waiting to dismantle the part in embedding the wrench end into operating space, after rotating specific angle with the second section of stalk portion relative first section, promote the second section with the help of external force along its axial direction motion to drive first section and fix the wrench end rotation on first section, realize treating revolving of dismantling the part and twist, thereby accomplish the installation and the dismantlement of relevant spare part.

Furthermore, the second end of the first section, which is far away from the wrench head, is provided with a C-shaped clamping groove with a notch running through the width direction, and the first end of the second section is rotatably connected in the C-shaped clamping groove. The structure of the C-shaped clamping groove is adopted, so that the first end of the second section is embedded in the groove, the second section can be effectively restrained from jumping in the direction perpendicular to the rotation plane of the second section, and the stability and reliability of the spanner in the process of installing and detaching related devices are ensured.

Further, C shape draw-in groove includes the groove bottom plate and fixes two curb plates of groove bottom plate both sides, the second terminal surface fixed connection of groove bottom plate and first section, the width dimension of groove bottom plate on perpendicular to stalk portion second section rotation plane is less than the thickness dimension of stalk portion first section in this side, and the junction of C shape draw-in groove and first section forms the boss promptly, adopts such design, has increased the inslot space of C shape draw-in groove for the C shape groove can hold the second section of thick size, thereby ensures that the second section has sufficient intensity and bears pulling force and thrust effect.

Furthermore, the first end of the second section is rotatably connected with the side plate of the C-shaped clamping groove through a fixed pin shaft.

Furthermore, the fixed pin shaft sequentially penetrates through the first side plate, the second section and the second side plate of the C-shaped clamping groove along the thickness direction.

Further, the second section can rotate at least in the range of 0 to 90 degrees relative to the first section, preferably in the range of-90 to 90 degrees, and more preferably in the range of-120 to 120 degrees.

Optionally, the first section and the second section may also be connected without using a C-shaped clamping groove, and the first end of the second section is directly overlapped above the second end of the first section, and the first end of the second section and the second end of the first section are rotatably connected through a rivet penetrating through the thickness of the first section. By adopting the connection mode, the rotation angle of the second section relative to the first section is increased, and the applicability is stronger compared with a C-shaped clamping groove design structure.

Furthermore, the first section and the second section adopt strip-shaped plate structures, and the design of the strip-shaped plate structures can reduce the overall thickness of the handle to the maximum extent, so that the device can adapt to narrower operation space; adopt strip plate-type structure simultaneously, mean that the width and the length direction size of stalk portion are greater than the thickness dimension, under the same thickness condition promptly, strip plate-type structure has the width dimension bigger than cylindric structure for the second section can bear bigger thrust and pulling force, thereby can be adapted to the installation and the dismantlement of the stronger part of fastening nature.

Further, a handle is arranged at a second end, far away from the first section, of the second section.

Further, the handle and the second section form a T-shaped assembly, the handle can be fixed on the second end of the second section through a countersunk head screw or the like, the side of the handle facing the first end of the second section of the handle part has an arc structure, and the design of the arc structure is designed to meet the ergonomic design.

The beneficial effects of the utility model reside in that:

(1) the handle part is split into the first section and the second section which are connected in a rotating mode, so that the size of the handle part of the ratchet wrench can be effectively shortened, and the corresponding bolt, screw or ratchet wheel type component can be mounted or dismounted when the operation space is limited;

(2) use the utility model discloses a device converts the power of push-and-pull around the second section into and makes first section pivoted power, can install more fast conveniently and dismantle relevant part.

Drawings

Fig. 1 is a schematic structural view of a ratchet wrench according to embodiment 1 of the present invention;

FIG. 2 is a schematic top view of the ratchet wrench of FIG. 1;

fig. 3 is a schematic structural view of a ratchet wrench according to embodiment 2 of the present invention;

fig. 4 is a schematic top view of the ratchet wrench of fig. 3.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

It should be noted that in the following description, the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Example 1:

the present embodiment provides a ratchet wrench, as shown in fig. 1 and 2, comprising a wrench head 100 and a shank 200, said shank 200 having a first section 201 fixedly connected to the wrench head 100 and a second section 202 rotationally connected thereto, said second section 202 being rotatable relative to the first section in a plane parallel to a radial plane of the wrench head.

In the illustrated embodiment, the second section 202 is connected with the first section 201 in a snap-in type rotation manner, as shown in the figure, the first section 201 is provided with a C-shaped slot 203 with a notch penetrating through the width direction at the second end far away from the wrench head, and the first end of the second section 202 is connected in the C-shaped slot 202 in a rotation manner. As shown in the figure, the C-shaped slot 202 is composed of a slot bottom plate and two side plates fixed on two sides of the slot bottom plate, the slot bottom plate is fixedly connected with the second end face of the first section, the width dimension of the slot bottom plate on the rotation plane perpendicular to the second section of the handle part is smaller than the thickness dimension of the first section of the handle part in the direction, that is, a boss structure is formed at the connection position of the C-shaped slot 203 and the first section 201 of the handle part, as shown in fig. 2. With such a design, the second section with a thicker size can be accommodated in the C-shaped clamping groove, so as to ensure that the second section 202 has enough strength to push the wrench head 100 to work.

In the illustrated embodiment, the first end of the second section 202 is rotatably connected to a side plate of the C-shaped slot 203 by a fixing pin 204, and as shown in the figure, the fixing pin 204 sequentially penetrates through the first side plate, the second section and the second side plate of the C-shaped slot 203 along the thickness direction.

In a preferred embodiment, the first and second sections 201, 202 are of a strip-like plate construction, such that the entire handle 200 can accommodate a smaller thickness of operating space.

In a preferred embodiment, a handle 300 is provided at a second end of the second section 202, which is remote from the first section, and as shown, the handle 300 is fixedly connected to the end of the second section 202, such as by a countersunk screw.

In the illustrated embodiment, the handle 300 and the second section 202 form a T-shaped assembly, and the side of the handle 300 facing the first end of the second section of the handle has an arc-shaped structure concave towards the second end of the second section, and the arc-shaped structure is designed to be ergonomic so as to be held by a human hand.

In a preferred embodiment, to ensure the effective operation of the ratchet wrench of the present embodiment, the second segment can rotate at least in a range of 0 to 90 degrees, preferably-90 to 90 degrees, relative to the first segment; more preferably, the rotation is within a range of-120 degrees to 120 degrees.

When the ratchet wrench of the present embodiment is used to disassemble a bolt, a screw, or a ratchet, the wrench head 100 is embedded into the operation space and placed at a corresponding position of a component to be disassembled, the second section 202 of the handle 200 is rotated to a specific angle relative to the first section 201, and then the second section 202 is pushed by external force to move along the axial direction, so as to drive the first section 201 and the wrench head fixed on the first section 201 to rotate, thereby realizing the screwing of the component to be disassembled or assembled, and completing the disassembling or assembling of related components.

Example 2:

the present embodiment provides a ratchet wrench, which has substantially the same action principle as that of embodiment 1, except that the ratchet wrench handle of the present embodiment is not provided with a C-shaped slot, but rather, the first end of the second section 202 ' is overlapped over the second end of the first section 201 ', and the first end of the second section and the second end of the first section are rotatably connected by a rivet 204 ' penetrating through the thickness thereof. It should be noted that, here, the rivet 204' has no essential difference from the fixing pin 204 of embodiment 1, and is provided for realizing the rotational connection between the two components, and the two components can be interchanged.

In the illustrated embodiment, the grip 300 is not provided to the ratchet wrench of the present embodiment, but in a specific practice, the grip 300 of embodiment 1 may be provided to the second end of the second section 202' of the present embodiment for the convenience of operation.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, while the invention has been described in detail with reference to the foregoing preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims; the sizes in the drawings and the embodiments are not related to specific objects, and are not used for limiting the protection scope of the invention, and the sizes of the objects can be selected and changed according to actual needs.

Claims (10)

1. A ratchet wrench comprising a wrench head and a shank having a first section fixedly connected to the wrench head and a second section rotatably connected to the first section, the second section being rotatable relative to the first section in a plane parallel to a radial plane of the wrench head.

2. The ratchet wrench of claim 1, wherein a second end of the first segment remote from the wrench head is provided with a C-shaped slot having a notch extending through the width, and the first end of the second segment is rotatably connected to the C-shaped slot.

3. The ratchet wrench of claim 2, wherein the C-shaped slot comprises a slot bottom plate and two side plates fixed on two sides of the slot bottom plate, the slot bottom plate is fixedly connected with the second end surface of the first section, and the width dimension of the slot bottom plate perpendicular to the rotation plane of the second section of the handle part is smaller than the thickness dimension of the first section of the handle part in the direction.

4. The ratchet wrench of claim 3, wherein the first end of the second segment is rotatably coupled to the side plate of the C-shaped slot by a fixed pin.

5. The ratchet wrench of claim 4, wherein the fixing pin sequentially penetrates through the first side plate, the second section and the second side plate of the C-shaped slot along the thickness direction.

6. The ratchet wrench of claim 1, wherein the first end of the second segment overlaps the second end of the first segment, and the first end of the second segment is rotatably coupled to the second end of the first segment by a rivet extending through a thickness of the second segment.

7. The ratchet wrench as claimed in any one of claims 1 to 6, wherein the first and second sections are of strip plate type construction.

8. The ratchet wrench of any one of claims 1-6, wherein the second segment includes a handle at a second end of the second segment distal from the first segment.

9. The ratchet wrench of claim 8, wherein the handle and the second segment form a T-shaped assembly, the handle having an arcuate configuration on a side of the handle facing the first end of the second segment of the handle.

10. The ratchet wrench of any one of claims 1-6, wherein the second segment is rotatable at least about 0-90 degrees relative to the first segment.

Images