CN209887488U

CN209887488U - Open spanner

Info

Publication number: CN209887488U
Application number: CN201922043448.2U
Authority: CN
Inventors: 张黎; 刘丹; 徐春升; 刘长英; 董义兵; 于海生
Original assignee: Liaoning Zhuanglong UAV Technology Co Ltd
Current assignee: Liaoning Dazhuang UAV Technology Co.,Ltd.
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-01-03
Anticipated expiration: 2029-11-25

Abstract

The utility model belongs to the technical field of mechanical tool technique and specifically relates to an open end wrench is related to. The open spanner comprises a first driving device, a power output component, a transmission assembly and a spanner part; the first driving device transmits power to the wrench part through the power output component and the transmission assembly so as to drive the wrench part to rotate. The power output component comprises a first bevel gear and a second bevel gear which are in meshed connection, and the first bevel gear is connected with an output shaft of the first driving device; the transmission assembly comprises a transmission belt, a first transmission gear and a first rack meshed with the first transmission gear; the second bevel gear is connected with the first transmission gear through the conveyor belt, the first rack is arranged on the wrench part, and the first rack is an arc rack. The application discloses open end wrench can realize treating to twist soon to revolve to twist fast of piece.

Description

Open spanner

Technical Field

The utility model belongs to the technical field of mechanical tool technique and specifically relates to an open end wrench is related to.

Background

The open-end wrench can turn a bolt, a screw or a nut, but the turning action generally needs to be done manually, but the manual turning process is laborious and inefficient. In addition, for bolts, screws or nuts with larger dimensions, a larger wrench may be required for screwing.

SUMMERY OF THE UTILITY MODEL

The application aims to provide an open end wrench, so that the screwing efficiency of the open end wrench is improved, the screwing force is saved, and bolts, screws or nuts with large size specifications can be screwed.

The application provides an open end wrench, which comprises a first driving device, a power output component, a transmission assembly and a wrench part;

the input end of the power output component is connected with the output shaft of the first driving device, and the output end of the power output component is connected with the wrench part through the transmission assembly so as to drive the wrench part to rotate;

the power output component comprises a first bevel gear and a second bevel gear which are in meshed connection, and the first bevel gear is connected with an output shaft of the first driving device.

The transmission assembly comprises a transmission belt, a first transmission gear and a first rack meshed with the first transmission gear;

the second bevel gear is connected with the first transmission gear through the conveyor belt, the first rack is arranged on the wrench part, and the first rack is an arc rack.

In any of the above technical solutions, preferably, the first rack is slidably disposed on the wrench portion; an arc-shaped slideway with a preset track is arranged on the wrench part, and the first rack can slide along the arc-shaped slideway; and a fastener is arranged on the arc-shaped slideway and used for fastening the first rack on the arc-shaped slideway.

In any of the above technical solutions, preferably, first control switches are respectively disposed on two sides of the wrench part, and the first control switches are electrically connected with the first driving device;

when the spanner part is located at an initial position, a preset distance is arranged between the first control switch and the spanner part;

when the spanner portion rotates to a first preset position or a second preset position, the spanner portion can trigger the corresponding first control switch to control the first driving device to start and stop or reversely rotate.

In any one of the above technical solutions, preferably, a fixed end and a movable end are formed on the wrench portion, and an opening is formed between the fixed end and the movable end; the movable end is arranged on the wrench part in a sliding mode, a second rack is formed on the movable end, a second transmission gear meshed with the second rack and a second driving device are arranged on the wrench part, and the second driving device is used for driving the second transmission gear to rotate so as to drive the movable end to move towards or away from the fixed end.

In any of the above technical solutions, preferably, the open-end wrench further includes a bracket and a support rod, the second bevel gear and the first transmission gear are respectively rotatably connected to the bracket, and the first transmission gear is located on one side of the wrench portion; the wrench part is provided with a through hole, the supporting rod penetrates through the through hole, one end of the supporting rod is connected with the bracket, and the other end of the supporting rod is connected with a limiting part; a limiting space is formed between the first transmission gear and the limiting part, and the wrench part is positioned in the limiting space; and the bracket is provided with extending parts corresponding to two sides of the wrench part respectively, and the extending parts are used for mounting the first control switch.

In any one of the above technical solutions, preferably, the open-end wrench further includes a housing, the first driving device and the power output member are both located in the housing, and the wrench portion protrudes from the housing.

In any one of the above technical solutions, preferably, a second control switch is disposed on the housing, and the second control switch is electrically connected to the first driving device and is configured to control start and stop of the first driving device.

In any of the above technical solutions, preferably, a power supply is further disposed in the housing, and the power supply is electrically connected to the first driving device and the second driving device, respectively.

In any of the above technical solutions, preferably, the first driving device is a motor, the second driving device is a micro motor, and the second transmission gear and the micro motor are respectively disposed on two sides of the wrench portion.

Compared with the prior art, the beneficial effects of the utility model are that:

the opening wrench provided by the application is connected through the matching of the first driving device, the power output component, the transmission assembly and the wrench part, and can provide rotating power for the wrench part, so that quick rotating of the to-be-rotated part is realized, and the rotating efficiency is improved while the force is saved. And through the transmission connection effect of the transmission assembly, the distance between the spanner part and the driving device can be changed, so that the requirements of the spanner part on arrangement at different positions can be met, and especially the screwing of bolts, screws or nuts with larger size and specification can be realized.

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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of an open-end wrench according to an embodiment of the present disclosure;

FIG. 2 is a partial cross-sectional view of the open end wrench of an embodiment of the present application;

FIG. 3 is a schematic view of the internal transmission of an open-end wrench according to an embodiment of the present application;

FIG. 4 is a schematic structural view of a wrench portion of an open-end wrench according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural view of a wrench portion of an open-end wrench according to an embodiment of the present application from a second perspective;

FIG. 6 is a schematic view of a portion of an open-end wrench according to an embodiment of the present application;

FIG. 7 is a sectional view of another part of the open end wrench according to the embodiment of the present application;

fig. 8 is a sectional view of another part of the open-end wrench according to the embodiment of the present application.

Reference numerals:

1-a first driving device, 2-a first bevel gear, 3-a second bevel gear, 4-a transmission component, 41-a transmission belt, 42-a first transmission gear, 43-a first rack, 5-a spanner part, 6-a movable end, 7-a second transmission gear, 8-a second rack, 9-a second driving device, 10-a first control switch, 11-a support, 111-a support rod, 112-a limiting part and 12-a shell.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.

The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Open-end wrenches in accordance with some embodiments of the present invention are described below with reference to fig. 1-8.

Referring to fig. 1 to 3, an embodiment of the present application provides an open-end wrench, which includes a first driving device 1, a power output member, a transmission assembly 4 and a wrench portion 5, wherein the first driving device 1 is a power source, an output shaft of the first driving device 1 is connected to an input end of the power output member, an output end of the power output member is connected to the wrench portion 5 through the transmission assembly 4, on one hand, the power output member transmits the power of the first driving device 1 to the wrench portion 5 through the power output member and the transmission assembly 4, and on the other hand, the power output member can change a power output direction of the first driving device 1, so as to drive the wrench portion 5 to rotate. The spanner portion 5 is used for contacting with the element to be screwed so as to realize the screwing of the element to be screwed.

Preferably, the first drive means 1 is an electric motor, the output shaft of which extends in the first direction.

Preferably, referring to fig. 2 and 3, the power output member comprises a first bevel gear 2 and a second bevel gear 3 which are in meshed connection, the first bevel gear 2 is connected with the output shaft of the first driving device 1, and thus the first bevel gear 2 has a rotation axis along the first direction; the second bevel gear 3 is arranged at an angle to the first bevel gear 2, whereby the second bevel gear 3 has an axis in the second direction. The driving direction of the power source can be changed by arranging the power output component, so that the rotating direction of the wrench part 5 can be changed to adapt to screwing requirements of different angles.

Referring to fig. 2 and 3, the transmission assembly 4 is connected between the output shaft of the second bevel gear 3 and the rotating shaft of the wrench portion 5, so that when the second bevel gear 3 rotates, the wrench portion 5 can be driven to rotate by the transmission assembly 4, the wrench portion 5 also has an axis along the second direction, and the wrench portion 5 has a first rotating plane. After the wrench part 5 clamps the to-be-screwed piece, the wrench part 5 is driven to rotate by the first driving device 1, so that the to-be-screwed piece is screwed. Through the transmission connection effect of the transmission assembly 4, the distance between the wrench part 5 and the first driving device 1 can be changed, so that the requirements of the wrench part 5 on different positions are met. Especially when screwing a bolt, a screw or a nut with a large size, the driving device may obstruct the rotation of the wrench part 5 due to the large space required for screwing, and the position of the wrench part 5 is extended by the transmission connection of the transmission assembly 4, and at the same time, the power of the output shaft of the second bevel gear 3 is effectively transmitted to the wrench part 5, and the screwing of the bolt, the screw or the nut with a large size can be realized.

Specifically, referring to fig. 6 and 7, the transmission assembly 4 includes a transmission belt 41, a first transmission gear 42, and a first rack 43 engaged with the first transmission gear 42; the second bevel gear 3 and the first transmission gear 42 are connected through the transmission belt 41 to drive the first transmission gear 42 to rotate through the transmission belt 41, the first rack 43 is fixedly arranged on the wrench portion 5, and the first rack 43 is an arc rack, so that the rotation of the first transmission gear 42 can drive the first rack 43 to rotate, and further the wrench portion 5 is driven to rotate around the arc axis of the first rack 43, so that the screwing of the to-be-screwed piece is realized. Preferably, the center of rotation of the first rack 43 (i.e., the circular arc axis center of the first rack 43) is located approximately at the middle of the opening formed by the wrench portion 5 and the movable end 6 (the formation of the opening will be described in detail in the following embodiments), so that the center of rotation of the wrench portion 5 can be located substantially at the axis position of the member to be screwed, such as a bolt.

Furthermore, it is preferable that the position of the first rack 43 on the surface of the wrench portion 5 is adjustable, specifically, an arc-shaped slide way (not shown in the figure) with a predetermined track is arranged on the wrench portion 5, the first rack 43 can slide along the arc-shaped slide way, and a fastening member is provided to position the first rack 43 on the arc-shaped slide way. Therefore, the position of the first rack 43 is adjusted, so that the rotation center of the first rack 43 can be positioned at the axis of the member to be screwed, such as a bolt, when bolts of different specifications are screwed.

The arc of the predetermined trajectory is matched with the arc of the first rack 43, and the length of the predetermined trajectory may be set according to the range of adjustment of the first rack 43 as needed, which is not particularly limited herein.

Therefore, the open-end wrench can realize quick screwing of the to-be-screwed piece through the matching of the driving device, the power output component, the transmission assembly 4 and the wrench part 5, and improves screwing efficiency while saving labor.

In addition, as shown in fig. 4 and 5, since the wrench portion 5 needs to be reset after the to-be-screwed member is screwed, in order to detect the position where the wrench portion 5 is rotated, so as to reset the wrench portion 5, in the present application, the first control switches 10 are respectively disposed at two sides of the wrench portion 5, and when the wrench portion 5 is located at the initial position, the first control switches 10 at two sides are both located at a predetermined distance from the wrench portion 5, so that when the wrench portion 5 is rotated to the first predetermined position at one side or the second predetermined position at the other side, the wrench portion 5 can trigger the first control switch 10 at the corresponding position, and the first control switch 10 can control the first driving device 1 to reversely operate, so as to reverse (i.e., reset) the wrench portion 5. For example, when the first driving device 1 drives the wrench portion 5 to rotate from the initial position to the first predetermined position, the side portion of the wrench portion 5 triggers the corresponding first control switch 10, and the first control switch 10 controls the first driving device 1 to operate reversely, so that the wrench portion 5 rotates from the first predetermined position to the initial position again. It should be noted that, in the process of rotating the wrench portion 5, the wrench portion 5 may also rotate from the first predetermined position to the second predetermined position, when the wrench portion 5 reaches the second predetermined position, the corresponding first control switch 10 is triggered, the first control switch 10 controls the wrench portion 5 to rotate, and the above process is repeated until the second control switch (the position of which will be described in detail below) controls the first driving device 1 to stop working.

Referring to fig. 3 to 5, in the wrench portion 5, a fixed end and a movable end 6 are formed thereon, and an opening for holding a member to be screwed is formed between the fixed end and the movable end 6. The movable end 6 can move towards the direction close to or far away from the fixed end, so that the size of the opening is changed, and clamping or loosening of parts to be screwed with different sizes is realized. The position of the movable end 6 of the wrench part 5 is shifted by the cooperation of a second transmission gear 7 arranged on the wrench part 5 and a second rack 8 arranged on the movable end 6. Specifically, the movable end 6 is slidably disposed on the wrench portion 5, a slider is disposed on one side of the movable end 6 connected to the wrench portion 5, a slide is disposed on the corresponding wrench portion 5, an extending direction of the slide is a direction in which the movable end 6 moves towards the fixed end, and the slider can slide in the slide, so that the movable end 6 can move. The wrench part 5 is also provided with a second driving device 9 and a second transmission gear 7, and the movable end 6 is correspondingly provided with a second rack 8 engaged with the second transmission gear 7. Preferably, the second driving device 9 is a micro motor, the second driving device 9 and the second transmission gear 7 are respectively disposed at two sides of the wrench portion 5, and an output shaft of the second driving device 9 is connected to the second transmission gear 7 for driving the second transmission gear 7 to rotate, and the rotation of the second transmission gear 7 can drive the movable end 6 to move, so as to change the size of the opening, that is, to change the distance between the fixed end and the movable end 6.

In addition, the second driving device 9 is also electrically connected with the first control switch 10, and while the wrench portion 5 touches the first control switch 10 and reverses, the second driving device 9 and the movable end 6 simultaneously reverse to move, that is, when the wrench portion 5 clamps the to-be-screwed member and screws for a certain angle to touch the first control switch 10, the opening of the wrench portion 5 increases, and the to-be-screwed member is loosened to perform the next screwing.

Preferably, the first driving device 1 and the second driving device 9 always work simultaneously, and are reversed and shut down simultaneously, so that when the wrench part 5 moves to one side, the second driving device 9 drives the movable end 6 to move inwards to clamp the piece to be screwed; when the wrench part 5 moves towards the other side, the second driving device 9 drives the movable end 6 to move outwards to loosen the piece to be screwed. That is, the first driving device 1 and the second driving device 9 can be synchronously controlled by one control switch.

In addition, referring to fig. 1 to 3 and 6 to 8, the open-end wrench of the present application further includes a housing 12, a bracket 11 and a supporting rod 111, the bracket 11 is connected to the housing 12, and part or all of the bracket 11 can extend out of the housing 12, that is, the bracket 11 and the housing 12 are connected in two ways, one is that part of the bracket 11 is located in the housing 12 and is connected to an inner wall of the housing 12, so that part of the bracket 11 can extend out of the housing 12 to support the power output member and the first transmission gear 42; the other is that the bracket 11 is connected to the edge of the housing 12 so that the entirety of the bracket 11 can protrude out of the housing 12 to support the power output member and the first transmission gear 42. The housing 12 is used to protect the first drive device 1 and the power output member, and the bracket 11 is used to support the power output member and the first transmission gear 42. Specifically, the first driving device 1 and the power output member are both located in the housing 12, the first transmission gear 42 and the wrench portion 5 are extended out of the housing 12, and the wrench portion 5 is used for contacting with an element to be screwed. The output shaft of the second bevel gear 3 and the rotating shaft of the first transmission gear 42 are respectively and rotatably connected to the bracket 11. A support rod 111 is arranged on one side of the support 11, which faces the wrench part 5, a through hole is arranged on the wrench part 5, the support rod 111 penetrates through the through hole, one end of the support rod 111 is connected with the support 11, and the other end is connected with a limiting part 112; the first transmission gear 42 is positioned at one side of the wrench part 5 and is positioned at the same side with the first rack 43; the limiting portion 112 is located at the other side of the wrench portion 5, a limiting space is formed between the first transmission gear 42 and the limiting portion 112, the wrench portion 5 is located in the limiting space to prevent the wrench portion 5 from axially deflecting in the rotating process, preferably, one side of the wrench portion 5 can be attached to the first transmission gear 42 or form a small gap, and the other side of the wrench portion 5 is attached to the limiting portion 112 or form a small gap.

In addition, referring to fig. 7 and 8, in order to ensure the normal rotation of the wrench portion 5, a gap is formed between the portion of the support rod 111 located in the through hole of the wrench portion 5 and the through hole, and the size of the limiting portion 112 is larger than the aperture of the through hole, so as to ensure the limiting effect of the limiting portion 112 on the wrench portion 5.

In addition, as shown in fig. 5 and 8, the bracket 11 is provided with extension portions corresponding to both sides of the wrench portion 5, respectively, and the first control switch 10 is mounted on the corresponding extension portions.

In addition, a second control switch is disposed on the housing 12, and the second control switch is electrically connected to the first driving device 1 and is used for controlling the start and stop of the first driving device 1.

Furthermore, a third control switch is preferably disposed on the housing 12, and the third control switch is electrically connected to the second driving device 9 and is used for controlling the on/off of the second driving device 9.

Preferably, a power supply is further disposed in the housing 12, and the power supply is electrically connected to the first driving device 1 and the second driving device 9 respectively, and is used for supplying power to the first driving device 1 and the second driving device 9.

Preferably, as shown in fig. 1, the housing 12 includes a holding portion and an accommodating portion, the holding portion and the accommodating portion are connected at an angle, the holding portion is adapted to a hand of a person, so that the person can hold the housing conveniently, and the power source can be disposed in the holding portion. The first driving device 1 and the power output member may be disposed in a housing portion, and a length extending direction of the housing portion is a first direction.

Firstly, holding the holding part of the shell 12 by hand, enabling the opening of the wrench part 5 to correspond to the piece to be screwed, enabling the wrench part 5 to be at an initial position, and adjusting the size of the opening through a third control switch to clamp the piece to be screwed; after clamping, the first driving device 1 is controlled to be started through the second control switch to realize the rotation of the to-be-screwed piece, in the rotation process, when the wrench part 5 rotates to the first preset position, the first control switch 10 is triggered, the wrench part 5 rotates, and the size of the opening is adjusted through the third control switch while the wrench part 5 rotates, so that the wrench part 5 loosens the to-be-screwed piece; when the wrench part 5 returns to the initial position or the second preset position, the third control switch adjusts the size of the opening again, so that the wrench part 5 clamps the to-be-screwed piece again to finish the screwing once again. And repeating the process until the member to be screwed finishes the screwing or unscrewing process.

Another use method of the open-end wrench of the present application is described below with reference to specific structures, first, the holding portion of the housing 12 is held by hand, so that the opening of the wrench portion 5 corresponds to the to-be-screwed member, the wrench portion 5 is located at an initial position, the first driving device 1 is controlled to start through the second control switch, the second driving device 9 starts at the same time, the movable end 6 starts and clamps the to-be-screwed member while the wrench portion 5 rotates to one side, and thereby the to-be-screwed member is screwed; when the wrench part 5 rotates to a first preset position, the first control switch 10 is triggered, the wrench part 5 rotates, the first driving device 1 starts and rotates reversely when rotating, meanwhile, the second driving device 9 rotates reversely, so that the opening of the wrench part 5 is enlarged, a piece to be screwed is loosened, and the clamping direction and the position of the wrench part 5 on the piece to be screwed can be adjusted; when the wrench part 5 rotates to the second preset position, another first control switch 10 is triggered, at this time, the first driving device 1 is reversely driven again, the second driving device 9 is reversely driven simultaneously, the movable end 6 clamps the to-be-screwed piece again while the wrench part 5 rotates reversely, so that the to-be-screwed piece is screwed until the wrench part 5 rotates to the first preset position, the first control switch 10 is triggered, and the to-be-screwed piece rotates reversely again. And repeating the process to screw the piece to be screwed in place, and controlling the first driving device 1 to stop through the second control switch when the piece to be screwed in place is screwed in place, and simultaneously controlling the second driving device 9 to stop.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. An open end wrench is characterized by comprising a first driving device, a power output component, a transmission assembly and a wrench part;

the power output component comprises a first bevel gear and a second bevel gear which are in meshed connection, and the first bevel gear is connected with an output shaft of the first driving device;

2. The open-ended wrench of claim 1, wherein said first rack is slidably disposed on said wrench portion; an arc-shaped slideway with a preset track is arranged on the wrench part, and the first rack can slide along the arc-shaped slideway; and a fastener is arranged on the arc-shaped slideway and used for fastening the first rack on the arc-shaped slideway.

3. The open spanner according to claim 1, wherein a first control switch is respectively disposed on both sides of the spanner portion, and the first control switch is electrically connected to the first driving device;

4. The open-ended wrench according to claim 3, wherein said wrench portion has a fixed end and a movable end formed thereon, said fixed end and said movable end defining an opening therebetween; the movable end is arranged on the wrench part in a sliding mode, a second rack is formed on the movable end, a second transmission gear meshed with the second rack and a second driving device are arranged on the wrench part, and the second driving device is used for driving the second transmission gear to rotate so as to drive the movable end to move towards or away from the fixed end.

5. The open spanner according to claim 4, further comprising a bracket and a support rod, wherein the second bevel gear and the first drive gear are respectively rotatably connected to the bracket, and the first drive gear is located at one side of the spanner portion; the wrench part is provided with a through hole, the supporting rod penetrates through the through hole, one end of the supporting rod is connected with the bracket, and the other end of the supporting rod is connected with a limiting part; a limiting space is formed between the first transmission gear and the limiting part, and the wrench part is positioned in the limiting space; and the bracket is provided with extending parts corresponding to two sides of the wrench part respectively, and the extending parts are used for mounting the first control switch.

6. The open-ended wrench according to claim 5, further comprising a housing, said first drive means and said power take-off member each being located within said housing, said wrench portion projecting from said housing.

7. The open spanner according to claim 6, wherein a second control switch is disposed on the housing, and the second control switch is electrically connected to the first driving device for controlling the start and stop of the first driving device.

8. The open-ended wrench according to claim 7, wherein a power source is further disposed in said housing, said power source being electrically connected to said first driving means and said second driving means, respectively.

9. The open spanner according to claim 8, wherein said first driving means is a motor, said second driving means is a micro motor, and said second transmission gear and said micro motor are respectively disposed at both sides of said spanner portion.