CN214081150U

CN214081150U - Clamping wrench

Info

Publication number: CN214081150U
Application number: CN202022624911.5U
Authority: CN
Inventors: 苏庆华
Original assignee: Chongqing Shangxian Electromechanical Co ltd
Current assignee: Chongqing Shangxian Electromechanical Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-08-31
Anticipated expiration: 2030-11-13

Abstract

The utility model discloses a clamping spanner, including the spanner body, the spanner body include clamping part and integrated into one piece in the handheld portion at clamping part both ends, the inside centre gripping space that is used for holding by twisting the article that is formed with of clamping part, two seted up one on the clamping part between the handheld portion and extended to opening in the centre gripping space, the open-ended size changes along with the distance between two handheld portions. The utility model provides a clamping spanner, through with handheld portion integrated into one piece at the both ends of clamping part, and be formed with the centre gripping space that is used for holding the article of being twisted in the clamping part inside, the size of this centre gripping space can change through the change of opening size, can suitably adjust through handheld portion, thereby make its adaptable matching multiple specification and dimension's article of being twisted, and the periphery that clamping space basically and article of being twisted completely contact, the many interlocks of contact surface are firm, difficult skidding; and the structure is small and exquisite, can adopt laser cutting one shot forming, low cost.

Description

Clamping wrench

Technical Field

The utility model relates to a hand tool technical field, especially a centre gripping spanner.

Background

The wrench is a common mounting and dismounting tool, and is a manual tool for screwing bolts, screws, nuts and other screw threads to tightly hold open or trepanning fasteners of the bolts or nuts by utilizing the lever principle. The wrench is typically made of structural steel of carbon or alloy material. The bolt or nut can be screwed by applying external force to the handle part along the rotation direction of the thread when in use.

The technical problem that the existing wrenches are slipped when the wrenches are used for screwing the nut and the valve and other objects due to the fact that the two plate lips of the wrench are used for clamping the cylindrical screw metal parts such as the valve or the nut and the like and then are screwed, and the plate lips only engage two side faces of the nut, the valve and other objects, so that the nut, the valve and other objects are not firmly engaged. For the wrench with the clamping piece as the sleeve hole, the size of the sleeve hole is fixed, the specification is clearly differentiated, and therefore the wrench is not convenient to be suitable for the objects such as nuts, valves and the like with inconsistent sizes and specifications on the production site.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the present invention is to provide a novel clamping wrench to solve the problem that the contact surface between the wrench and the object to be twisted is not large, so that the wrench is not firmly engaged and easily skidded, and the application range is small.

In order to achieve the above purpose, the technical scheme of the utility model is that:

the utility model provides a centre gripping spanner, includes the spanner body, the spanner body include clamping part and integrated into one piece in the handheld portion at clamping part both ends, the inside centre gripping space that is used for holding the twisted article that is formed with of clamping part, two seted up one on the clamping part between the handheld portion and extended to opening in the centre gripping space, open-ended size changes along with the distance change between two handheld portions.

Preferably, the cross section of the clamping space is substantially circular, and a limiting member for limiting the rotation of the object to be screwed relative to the clamping space is further arranged on the inner side wall of the clamping space.

Preferably, the limiting member is a plurality of tooth-shaped protrusions uniformly arranged along the inner side wall of the clamping space, and each tooth-shaped protrusion faces the center of the clamping space.

Preferably, the tooth-shaped protrusion comprises a first protrusion surface and a second protrusion surface, and an included angle between the first protrusion surface and the second protrusion surface is an acute angle.

Preferably, the outer peripheral contour of the clamping portion has an arc-shaped cross section.

Preferably, the outer side of the hand-held part is in an arc wave structure.

The utility model has the advantages that: the utility model provides a clamping spanner, through with handheld portion integrated into one piece at the both ends of clamping part, and be formed with the centre gripping space that is used for holding the article of being twisted in the clamping part inside, the size of this centre gripping space can change through the change of opening size, can suitably adjust through handheld portion, thereby make its adaptable matching multiple specification and dimension's article of being twisted, and the periphery that clamping space basically and article of being twisted completely contact, the many interlocks of contact surface are firm, difficult skidding; and the structure is small and exquisite, can adopt laser cutting one shot forming, low cost.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic structural diagram of embodiment 2 of the present invention;

FIG. 4 is a schematic structural view of a first connecting member according to embodiment 2;

fig. 5 is a schematic structural view of a second connector according to embodiment 2.

Description of reference numerals:

10. a wrench body; 11. a clamping portion; 12. a hand-held portion; 13. a clamping space; 14. a tooth-shaped bulge; 141. a first convex surface; 142. a second convex surface; 15. a connecting member; 151. a first connecting member; 152. a second connecting member; 153. connecting holes; 154. a protrusion; 155. a third connecting member; 156. a fourth connecting member; 157. a card slot; 158. a hook is clamped; 16. and (4) opening.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

Example 1:

referring to fig. 1 and 2, the clamping wrench is characterized by comprising a wrench body 10, wherein the wrench body 10 comprises a clamping portion 11 and handheld portions 12 integrally formed at two ends of the clamping portion, a clamping space 13 for accommodating a screwed object is formed inside the clamping portion 11, an opening 16 extending into the clamping space 13 is formed in the clamping portion 11 between the two handheld portions 11, and the size of the opening 16 changes along with the change of the distance between the two handheld portions 12.

In the embodiment, the hand-held parts 12 are integrally formed at two ends of the clamping part 11, the clamping space 13 for accommodating the object to be screwed is formed in the clamping part 11, the size of the clamping space 13 can be changed through the size change of the opening 16, namely, the hand-held part 12 can be properly adjusted, so that the clamping device can adapt to the objects to be screwed matched with various specifications and sizes, the clamping space basically and completely contacts with the periphery of the objects to be screwed, the contact surface is multi-meshed and firm, and the clamping device is not easy to slip; and the structure is small and exquisite, can adopt laser cutting one shot forming, low cost is favorable to the large-scale production.

Specifically, during the use, operating personnel holds handheld portion 12 and controls the distance between its two handheld portions 12 and can adjust the size of opening 16, and then the size of control regulation centre gripping space 13 makes it just cup joint on being twisted the article, and then conveniently will be twisted the article hard and tighten or unscrew.

In this embodiment, the cross section of the clamping space 13 is substantially circular, and a limiting member for limiting the rotation of the object to be screwed relative to the clamping space 13 is further disposed on the inner side wall of the clamping space 13; the limiting members are a plurality of tooth-shaped protrusions 14 uniformly arranged along the inner side wall of the clamping space 13, and each tooth-shaped protrusion 14 faces the center of the clamping space 13. Specifically, set up a plurality of dentations protruding 14 and can make this centre gripping spanner more be applicable to the columniform by twisting the article that is made of materials such as copper and/or aluminium that hardness is soft on the right side, its atress is even, and the claw is tight strong, can play the effect of better chucking, further improves the antiskid of spanner, anticreep performance. Of course, in some other embodiments, the position-limiting member may have other structures, such as a rectangular protrusion, so as to be convenient for the case where a rectangular groove is formed on the outer surface of the object to be twisted. In some embodiments, the clamping space may also be provided in a polygonal structure to accommodate the object to be screwed, which has a polygonal outer contour, and is not limited herein.

In this embodiment, the tooth-shaped protrusion 14 includes a first protrusion surface 141 and a second protrusion surface 142, and an included angle between the first protrusion surface 141 and the second protrusion surface 142 is an acute angle, so that the clamping force of the tooth-shaped protrusion 14 can be further improved.

In this embodiment, the cross section of the outer peripheral profile of the clamping portion 11 is arc-shaped, so that the manufacturing and molding are convenient, and the arc transition is not easy to deform.

In this embodiment, the outer side of the handheld portion 12 is in an arc-shaped wave structure, so that the operation force of an operator can be facilitated.

The clamping wrench provided by the embodiment is particularly suitable for screwing and loosening cylindrical screw metal pieces, particularly copper pieces and aluminum pieces with soft hardness, such as copper nozzles below cutting heads of laser machines.

Example 2

In the case that some objects to be screwed are large in size, the clamping wrench can be designed to be generally large, and during operation, because the distance between the two handheld portions 12 is long, and it is inconvenient to operate the objects, this embodiment has a connecting member 15 hinged between the two handheld portions 12, as shown in fig. 3 and 4, which shows a schematic structural view of the first connecting member, the connecting member 15 includes a first connecting member 151 hinged on one of the handheld portions 12 and a second connecting member 152 hinged on the other handheld portion 12, the first connecting member 151 is uniformly provided with a plurality of connecting holes 153, the second connecting member 152 is provided with at least one protrusion 154 capable of being clamped into the connecting holes 153, when in use, the protrusion 154 is clamped into the connecting holes 153, so as to achieve positioning and fixing, thereby facilitating screwing or unscrewing of objects to be screwed which are large in size, without holding the two hand-held portions 12 all the time with force, certain operation difficulty is reduced.

With reference to fig. 5, a schematic structural diagram of a second connecting member is shown, which includes a third connecting member 155 hinged to one of the handheld portions 12 and a fourth connecting member 156 hinged to the other handheld portion 12, the third connecting member 155 is uniformly provided with a plurality of clamping grooves 157, the fourth connecting member 156 is hinged to a hook 158 capable of being clamped into the clamping grooves 157, when in use, the hook 158 is clamped into the corresponding clamping groove 157 to be fixed in a limited manner according to the size of the required clamping space, the same effect can be achieved, and the operation is more convenient.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The clamping wrench is characterized by comprising a wrench body (10), wherein the wrench body (10) comprises a clamping part (11) and handheld parts (12) which are integrally formed at two ends of the clamping part, a clamping space (13) for accommodating a twisted object is formed inside the clamping part (11), an opening (16) extending into the clamping space (13) is formed in the clamping part (11) between the two handheld parts (12), and the size of the opening (16) changes along with the change of the distance between the two handheld parts (12); the outer side of the handheld part (12) is of an arc-shaped wave structure; a connecting piece (15) is hinged between the two hand-held parts (12).

2. The clamping wrench as claimed in claim 1, wherein the clamping space (13) is substantially circular in cross-section, and a limiting member for limiting the rotation of the object to be screwed with respect to the clamping space (13) is further provided on the inner side wall of the clamping space (13).

3. The clamping wrench as claimed in claim 2, wherein the retaining means is a plurality of teeth (14) arranged uniformly along the inner side wall of the clamping space (13), each tooth (14) facing the center of the clamping space (13).

4. Clamping wrench according to claim 3, characterized in that the tooth-like projection (14) comprises a first projection surface (141) and a second projection surface (142), the angle between the first projection surface (141) and the second projection surface (142) being acute.

5. Clamping wrench according to claim 1, characterised in that the outer peripheral profile of the clamping part (11) is circular-arc shaped in cross-section.