CN217345275U

CN217345275U - Wrench for limited space

Info

Publication number: CN217345275U
Application number: CN202221280049.3U
Authority: CN
Inventors: 孙福江
Original assignee: Weihai Jinde Tools Co ltd
Current assignee: Weihai Jinde Tools Co ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-09-02
Anticipated expiration: 2032-05-26

Abstract

The utility model discloses a spanner for restricted space, including base, interior square shaft, axostylus axostyle and drive assembly, interior square shaft is to wearing through the base down and rotate with the base to be connected, the inside sunken polygon form holding chamber that forms in bottom surface of interior square shaft, the axostylus axostyle level is worn through the base and is connected with the base rotation, when the external drive axostylus axostyle is rotatory, the axostylus axostyle passes through drive assembly and transmits rotary motion to interior square shaft to it is rotatory to drive the article of polygon holding intracavity. The utility model discloses rational in infrastructure, can be in narrow and small space quick assembly disassembly, be favorable to popularizing and applying.

Description

Wrench for limited space

Technical Field

The utility model relates to an instrument technical field for the dismouting specifically is a spanner for restricted space.

Background

When the equipment with a more compact structure is disassembled and assembled, if a bolt or a nut needs to be screwed, the conventional wrench is often limited by a narrow space and cannot be normally rotated, the conventional wrench needs to be screwed a little, time and labor are wasted, the efficiency is low, and the labor intensity of an operator is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a spanner for restricted space, when it had solved dismouting compact structure equipment, used conventional spanner to waste time and energy, inefficiency and operating personnel intensity of labour is big technical problem, had rational in infrastructure, can be in narrow and small space quick assembly disassembly's technological effect. The adopted technical scheme is as follows:

a wrench for a limited space comprises a base, an inner square shaft, a shaft rod and a transmission assembly, wherein the inner square shaft penetrates through the base downwards and is connected with the base in a rotating mode, the bottom surface of the inner square shaft is inwards recessed to form a polygonal containing cavity, the shaft rod horizontally penetrates through the base and is connected with the base in a rotating mode, and when the shaft rod is driven by external force to rotate, the shaft rod transmits rotating motion to the inner square shaft through the transmission assembly so as to drive objects in the polygonal containing cavity to rotate.

On the basis of the technical scheme, the transmission assembly comprises a first bevel gear and a second bevel gear which are meshed with each other, the first bevel gear is coaxially and fixedly connected above the inner square shaft, and the second bevel gear is coaxially and fixedly connected to the tail end of the shaft rod.

On the basis of the technical scheme, the transmission assembly comprises a worm wheel and a worm which are meshed with each other, the worm wheel is coaxially and fixedly connected above the inner square shaft, and the worm is sleeved outside the shaft rod.

On the basis of the technical scheme, a bearing is arranged at the rotary connection position of the inner square shaft and the base.

On the basis of the technical scheme, the inner wall surface of the through hole for the inner square shaft to pass through is provided with an annular flange, and the annular flange can upwards support the inner square shaft.

On the basis of the technical scheme, the depth of the accommodating cavity is smaller than the height of the inner square shaft.

On the basis of the technical scheme, one end of the shaft rod, which is far away from the transmission assembly, is a polygon prism, so that the shaft rod is convenient to clamp.

On the basis of the technical scheme, the device further comprises a jackscrew, the jackscrew is in threaded connection with the base, and the tail end of the jackscrew can be abutted to the outer wall surface of the shaft rod.

On the basis of the technical scheme, the inner square shaft is in clearance fit with the base, and the shaft lever is in clearance fit with the base.

Advantageous effects

The utility model discloses rational in infrastructure, transmit the rotary motion of axostylus axostyle to interior square shaft through drive assembly, so can avoid operating the spanner in the narrow and small space that interior square shaft located, convenient to use, and be favorable to making operating personnel keep good action posture, be favorable to reducing intensity of labour. In addition, the inner square shaft can be detachably connected with the base, so that the inner square shaft can be conveniently replaced, the bolt and nut dismounting device is suitable for dismounting bolts and nuts with different sizes, and the applicability is good.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is to be understood that the drawings in the following description are merely exemplary of the invention and that other embodiments may be derived by those skilled in the art without inventive step from the drawings provided.

FIG. 1: a schematic perspective view of the first embodiment 1;

FIG. 2: a schematic perspective structure diagram ii of embodiment 1;

FIG. 3: the sectional structure of the front view of the embodiment 1 is schematic;

FIG. 4: the three-dimensional structure of the base and the jackscrew in the embodiment 1 is shown schematically;

FIG. 5: embodiment 2 is a schematic sectional structure view of a front view;

Detailed Description

The following description and the drawings sufficiently illustrate specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the embodiments herein includes the full ambit of the claims, as well as all available equivalents of the claims. The terms "first," "second," and the like, herein are used solely to distinguish one element from another element without requiring or implying any actual such relationship or order between such elements. In practice, a first element can also be referred to as a second element, and vice versa. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such structure, apparatus, or device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a structure, device or apparatus that comprises the element. The various embodiments are described in a progressive manner, with each embodiment focusing on differences from the other embodiments, and with like parts being referred to one another.

The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like herein, as used herein, are defined as orientations or positional relationships based on the orientation or positional relationship shown in the drawings, and are used for convenience in describing and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. In the description herein, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, mechanical or electrical connections, and communication between two elements, and may include direct connection and indirect connection through intervening media, where the meaning of the terms is to be understood by those skilled in the art as appropriate.

Herein, the term "plurality" means two or more, unless otherwise specified.

Herein, the character "/" indicates that the preceding and succeeding objects are in an "or" relationship. For example, A/B represents: a or B.

Herein, the term "and/or" is an associative relationship describing objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

Example 1

As shown in fig. 1 to 4, a wrench for a limited space comprises a base 1, an inner square shaft 2, a shaft rod 3 and a transmission assembly 4, wherein the base 1 comprises a through hole, the inner square shaft 2 downwardly penetrates through the through hole and is rotatably connected with the base 1, the inner square shaft 2 is in clearance fit with the base 1, in addition, an annular flange 11 is arranged on the inner wall surface of the through hole, and the outer wall surface of the inner square shaft 2 is matched with the inner wall surface of the through hole, so that the annular flange 11 upwards supports the inner square shaft 2.

The bottom surface of the inner square shaft 2 is inwards sunken to form a hexagonal prism-shaped accommodating cavity 21, the depth of the accommodating cavity 21 is smaller than the height of the inner square shaft 2, namely the hexagonal prism-shaped accommodating cavity 21 is a blind hole and does not penetrate through the inner square shaft 2, and the inner square shaft 2 can be covered outside the bolt cap and can be screwed with the bolt cap. The axostylus axostyle 3 level is worn through base 1 and is rotated with base 1 and be connected, axostylus axostyle 3 and base 1 clearance fit, when external force drive axostylus axostyle 3 is rotatory, axostylus axostyle 3 passes through transmission assembly 4 with rotary motion transmission to interior square shaft 2 to it is rotatory to drive the article in the holding chamber 21. Specifically, the transmission assembly 4 includes a first bevel gear 41 and a second bevel gear 42 which are engaged with each other, the first bevel gear 41 is coaxially fixed above the inner shaft 2, and the second bevel gear 42 is coaxially fixed at the end of the shaft 3.

In addition, the end of the shaft lever 3 far away from the transmission component 4 is a polygon prism, so that the clamping is convenient. Still include jackscrew 5, jackscrew 5 and base 1 spiro union, just 5 terminal ability and the outer wall butt of axostylus axostyle 3 of jackscrew to restriction axostylus axostyle 3 rotates.

Example 2

Example 2 differs from the examples in that: 1) the transmission assembly 4 comprises a worm wheel and a worm which are meshed with each other, the worm wheel is coaxially and fixedly connected above the inner square shaft 2, and the worm is sleeved outside the shaft lever 3. 2) The inner square shaft 2 downwards penetrates through the through hole and is rotatably connected with the through hole, a bearing is arranged at the rotating connection position of the inner square shaft, and an annular flange is not arranged in the through hole. 3) The hexagonal prism-shaped accommodating cavity 21 penetrates through the inner square shaft 2 so as to be conveniently sleeved outside the nut and the stud and screwed with the nut.

The present invention has been described above by way of example, but the present invention is not limited to the above-mentioned embodiments, and any modifications or variations based on the present invention are all within the scope of the present invention as claimed.

Claims

1. The wrench for the limited space is characterized by comprising a base (1), an inner square shaft (2), a shaft lever (3) and a transmission assembly (4), wherein the inner square shaft (2) penetrates through the base (1) downwards and is connected with the base (1) in a rotating mode, the bottom surface of the inner square shaft (2) is recessed inwards to form a polygonal containing cavity (21), the shaft lever (3) penetrates through the base (1) horizontally and is connected with the base (1) in a rotating mode, and when the shaft lever (3) is driven to rotate by external force, the shaft lever (3) transmits the rotating motion to the inner square shaft (2) through the transmission assembly (4) so as to drive objects in the polygonal containing cavity (21) to rotate.

2. The wrench for limited space according to claim 1, wherein the transmission assembly (4) comprises a first bevel gear (41) and a second bevel gear (42) which are engaged with each other, the first bevel gear (41) is coaxially fixed above the inner square shaft (2), and the second bevel gear (42) is coaxially fixed at the end of the shaft rod (3).

3. The wrench for limited space according to claim 1, wherein the transmission assembly (4) comprises a worm wheel and a worm screw which are engaged with each other, the worm wheel is coaxially and fixedly connected above the inner square shaft, and the worm screw is sleeved outside the shaft rod.

4. The wrench for limited space according to claim 1, wherein a bearing is arranged at the rotary connection position of the inner square shaft (2) and the base (1).

5. A wrench as claimed in any one of claims 1 to 3, wherein the base (1) is provided with an annular flange (11) on the inner wall surface of the through hole through which the inner square shaft (2) passes, and the annular flange (11) can upwardly support the inner square shaft (2).

6. A wrench as claimed in claim 4, wherein the depth of the receiving cavity (21) is less than the height of the square shaft (2).

7. A wrench as claimed in claim 5, wherein the end of the shaft (3) remote from the driving assembly (4) is polygonal to facilitate gripping.

8. The wrench for limited space according to claim 7, further comprising a top thread (5), wherein the top thread (5) is screwed with the base (1), and the end of the top thread (5) can abut against the outer wall surface of the shaft rod (3).

9. A wrench as claimed in any one of claims 6 to 8, wherein said inner shaft (2) is in clearance fit with said base (1) and said shaft (3) is in clearance fit with said base (1).