CN108214339A

CN108214339A - A kind of open and close type hand-held device and its Handheld Division angle regulation method

Info

Publication number: CN108214339A
Application number: CN201611155461.1A
Authority: CN
Inventors: 王暋
Original assignee: Hangzhou Great Star Industrial Co Ltd
Current assignee: Hangzhou Great Star Industrial Co Ltd
Priority date: 2016-12-14
Filing date: 2016-12-14
Publication date: 2018-06-29

Abstract

The present invention relates to a kind of open and close type hand-held device and its Handheld Division angle regulation method, the open and close type hand-held device includes the first component and second component；The first component includes the first clamping part and the first Handheld Division；The second component includes the second clamping part and the second Handheld Division；First clamping part, second clamping part are turnably flexibly connected by the first axis pin；First clamping part opening and closing opposite with second clamping part, plane residing for opening and closing path are opening and closing plane；First Handheld Division is turnably connected to first clamping part；Plane residing for the rotation path of first Handheld Division and the opening and closing plane are same or parallel；First Handheld Division is equipped with locking device with the first clamping part junction, for locking or unlocking first Handheld Division and first clamping part.

Description

Opening-closing type handheld device and handheld part angle adjusting method thereof

Technical Field

The invention relates to the technical field of handheld tools, in particular to an opening-closing type handheld device and a handheld part angle adjusting method thereof.

Background

The present disclosure relates to an open-close type hand-held device, including a clamping tool and a shearing tool, among others. In a conventional foldable handheld device, the handheld portion and the clamping portion are generally integrally formed, such as nipper pliers, scissors, and the like, in the foldable device, the opening angles of the two handheld portions and the opening angles of the two clamping portions are consistent, and according to a lever principle, in order to achieve the purpose of saving labor, the length of the handheld portion is generally set to be more than 3 times of the length of the clamping portion.

Under some special application conditions, for example, when the size of the clamped object is larger, the opening angles of the clamping part and the hand-held parts are also larger, the distance between the tail ends of the two hand-held parts after the clamping part and the hand-held parts are opened is also larger, and due to the limited opening area of the hand of the user, in this case, the user cannot exert force on the tail ends of the two hand-held parts with one hand, and cannot smoothly complete the operation; the force can only be exerted in the middle of the two hand-held parts, and the moment is short, so that the user can exert more labor in use and is inconvenient to operate and use.

On the other hand, for a large number of users of the foldable handheld tool, the sizes of the hands are different, and the habits of exerting force are also different. If the relative angle of the hand-held portion and the clamping portion of the hand-held tool cannot be adjusted in the opening and closing direction, the user cannot operate and use the hand-held tool at the most familiar and convenient force-exerting angle in most cases.

Therefore, those skilled in the art have devoted to develop an opening and closing type hand tool, in which the hand-held part can rotate relatively to the clamping part in the opening and closing direction of the clamping part and lock the position, so that a user can adjust the relative angle between the hand-held part and the clamping part of the hand tool and lock the hand-held part according to the size of the hand and the habit of applying force, so that the user can operate and use the opening and closing type hand tool at the most familiar and convenient force-applying angle.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide an opening and closing type handheld device, so as to solve the technical problems of inconvenient operation and use of the opening and closing type handheld device in special application conditions.

In order to solve the above technical problem, the present invention provides an opening and closing type hand-held device, which comprises a first component and a second component; the first component comprises a first clamping part and a first handheld part; the second component comprises a second clamping part and a second holding part; the first clamping part and the second clamping part are movably connected in a rotating way through a first pin shaft; the first clamping part and the second clamping part are oppositely opened and closed, and the plane where the opening and closing path is located is an opening and closing plane; the first handheld part is rotatably connected to the first clamping part; the plane of the rotation path of the first handheld part is the same as or parallel to the opening and closing plane; and a locking device is arranged at the joint of the first handheld part and the first clamping part and used for locking or unlocking the first handheld part and the first clamping part.

Further, in order to solve the above technical problem, the present invention provides another foldable handheld device, including a first component and a second component; the first component comprises a first clamping part and a first handheld part; the second component comprises a second clamping part and a second holding part; the first clamping part and the second clamping part are movably connected in a rotating way through a first pin shaft; the first clamping part and the second clamping part are oppositely opened and closed, and the plane where the opening and closing path is located is an opening and closing plane; the first handheld part is rotatably connected to the first clamping part; the plane of the rotation path of the first handheld part is the same as or parallel to the opening and closing plane; and a locking device is arranged at the joint of the first handheld part and the first clamping part and used for locking or unlocking the first handheld part and the first clamping part. The second holding part is rotatably connected to the second clamping part; the plane of the rotation path of the second handheld part is the same as or parallel to the opening and closing plane; and a locking device is arranged at the joint of the second handheld part and the second clamping part and used for locking or unlocking the second handheld part and the second clamping part.

Further, in various embodiments, the locking device includes an extension, a protrusion, a second pin; the extension part is arranged at the bottom end of the first clamping part or the second clamping part; the protruding part is arranged at the top end of the first handheld part or the second handheld part and is inserted into the extending part; a second pin shaft penetrates through the extension part and the protruding part; wherein the protrusion is movably connected to the extension portion by the second pin.

Further, in various embodiments, the extension includes a first mounting plate, a second mounting plate, an assembly groove; the second mounting plate is arranged opposite to the first mounting plate; the assembling groove is arranged between the first mounting plate and the second mounting plate; for inserting the projection; the second mounting plate corresponds to the first mounting plate in shape and size.

Further, in various embodiments, the first mounting plate includes a first mounting hole; the second mounting plate comprises a second mounting hole which is opposite to the first mounting hole; the protrusion includes a third mounting hole; when the protruding part is inserted into the assembling groove, the second pin shaft sequentially penetrates through the first mounting hole, the third mounting hole and the second mounting hole.

Further, in various embodiments, the locking device further includes a first pressing plate, an annular saw tooth, a spline block, a first spring, and a nut. The first pressing plate is arranged at the top of the second shaft pin; the annular saw teeth are arranged on the inner side walls of the first mounting hole, the third mounting hole and the second mounting hole; the spline block is sleeved outside the second shaft pin; more than two first clamping strips are uniformly distributed on the outer side wall of the spline block, and the first clamping strips are parallel to the second shaft pin; the first spring is sleeved outside the second shaft pin, the top end of the first spring is connected to the bottom of the first pressing plate, and the bottom end of the first spring is sleeved on the top of the spline block; the nut is threaded onto the second axle pin lower end.

Further, in different embodiments, each first clamping strip sequentially comprises a first notch, a first rack, a second notch and a second rack from top to bottom; when the button is pressed downwards, the first rack is meshed with the annular saw teeth in the third mounting hole, and the locking device is in an unlocked state; when the button is released, the first rack is meshed with the annular saw teeth in the first mounting hole and the third mounting hole, the second rack is meshed with the annular saw teeth in the second mounting hole, and the locking device is in a locking state.

Further, in various embodiments, the length of the first rack is less than the depth of the third mounting hole; the length of the second rack is less than the maximum compression distance of the first spring; the length of the second gap is larger than the depth of the third mounting hole.

Further, in various embodiments, the locking device further includes a button groove and a nut groove, the button groove is disposed on the top of the first mounting plate and above the first mounting hole for placing the first pressing plate; the nut groove is formed in the bottom of the second mounting plate and located below the second mounting hole, and is used for placing the nut.

Further, in various embodiments, the locking device further comprises an angle indicator and a positioning indicator. The angle mark is arranged at the top of the first mounting plate and is positioned around the button groove; the angle mark is used for marking the rotation angle of the first handheld part relative to the first clamping part; or the second clamping part is used for marking the rotating angle of the second handheld part relative to the second clamping part. The positioning mark is arranged at the top of the first handheld part or the second handheld part and is close to one end of the protruding part; the positioning mark points to any angle on the angle mark.

Further, in different embodiments, the locking device further comprises a semicircular gear, a limiting block, a sliding buckle and a second spring, wherein the semicircular gear is formed at the tail end of the first mounting plate and/or the second mounting plate; the limiting block protrudes out of the upper surface of the first handheld part and is close to the protruding part; the limiting block is provided with a U-shaped groove, the opening direction of the U-shaped groove faces towards the semicircular gear, and the bottom of the U-shaped groove is provided with a spring installation groove; the sliding buckle is arranged in the U-shaped groove; the sliding buckle comprises a buckle body, a buckle shifting knob, a second clamping strip and a second spring mounting column, wherein the shape of the buckle body corresponds to the shape of the bottom of the U-shaped groove and is perpendicular to the protruding part; the buckle shifting knob is arranged above the buckle body and protrudes out of the upper surface of the first handheld part. The second clamping strip protrudes out of the side wall of the buckle body and faces one side of the semicircular gear; the second clamping strip is perpendicular to the protruding part, and the length of the second clamping strip corresponds to that of the buckle body; the second spring mounting column is arranged on the side wall of the buckle body and faces one side of the spring mounting groove; the second spring mounting column is parallel to the protruding part, and the second spring mounting column and the spring mounting groove are positioned on the same straight line; the second spring is sleeved on the second spring mounting column; one end of the second spring is tangent to the buckle obtaining body, and the other end of the second spring is located in the spring mounting groove.

Further, in various embodiments, when the buckle toggle button is toggled down, the second clamping strip is disengaged from the semi-circular gears of the first mounting plate and the second mounting plate; the locking device is in an unlocking state; when the buckle toggle button is released, the second clamping strip is clamped to the semicircular gears of the first mounting plate and the second mounting plate; the locking device is in a locked state.

Further, in various embodiments, the height of the second clip strip protruding from the clip body is less than the maximum compression distance of the second spring.

Further, in various embodiments, the locking device includes a circular gear, two mounting bases, a press catch, a third pin, and a third spring. The circular gear protrudes out of the upper surface of the first mounting plate; the circular gear is fixed to the first mounting plate, or is provided integrally with the first mounting plate. The two oppositely arranged mounting bases protrude out of the upper surface of the first handheld part and are close to the protruding part; two installation bases are respectively provided with a base pin hole, and the two base pin holes are positioned on the same straight line. The pressing buckle is arranged between the two mounting bases and comprises a second pressing plate, a clamping part and a third clamping strip, one end, close to the protruding part, of the second pressing plate is provided with a pressing plate pin hole which is positioned on the same straight line with the two base pin holes; the other end of the spring fixing plate is provided with a third spring mounting column which protrudes out of and is vertical to the lower surface of the second pressing plate; the clamping portion is arranged at one end, close to the protruding portion, of the second pressing plate, and an included angle of 120-160 degrees is formed between the clamping portion and the second pressing plate; the third clamping strip is arranged at the top of the clamping part, protrudes downwards and is opposite to the circular gear. The third pin shaft penetrates through the pin shaft holes of the pressing plate and the two base pin shaft holes simultaneously; the third spring is sleeved outside the third spring mounting column, one end of the third spring is tangent to the lower surface of the pressing buckle body, and the other end of the third spring is tangent to the upper surface of the first handheld portion.

Further, in various embodiments, when the second pressing plate is pressed downward, the third chuck bar is disengaged from the circular gear, and the locking device is in an unlocked state; when the second pressing plate is released, the third clamping bar is clamped to the circular gear, and the locking device is in a locking state.

Further, in various embodiments, the locking device includes a first sliding pin, a first fixed pin, and a second fixed pin. The first sliding pin shaft is arranged at the joint of the upper part of the first handheld part and the bottom end of the first clamping part; the first fixed pin shaft is arranged at the joint of the top end of the first handheld part and the top end of the second handheld part; the second fixed pin shaft is arranged at the joint of the upper part of the second handheld part and the bottom end of the second clamping part; wherein the first sliding pin is slidably mounted to the first clamping portion.

Further, in various embodiments, the locking device includes a first sliding pin, a first fixed pin, and a second sliding pin. The first sliding pin shaft is arranged at the joint of the upper part of the first handheld part and the bottom end of the first clamping part; the first fixed pin shaft is arranged at the joint of the top end of the first handheld part and the top end of the second handheld part; the second sliding pin shaft is arranged at the joint of the upper part of the second handheld part and the bottom end of the second clamping part; wherein the first sliding pin is slidably mounted to the first clamping portion; the second sliding pin shaft is slidably mounted to the second clamping portion.

Further, in different embodiments, the locking device further includes two or more positioning holes and at least one sliding opening, the two or more positioning holes being communicated with each other and disposed at the bottom end of the first clamping portion or the second clamping portion; the first sliding pin shaft or the second sliding pin shaft can be slidably mounted in the positioning hole; each sliding opening is arranged at the communication position between two adjacent positioning holes.

Further, in different embodiments, the first sliding pin and/or the second sliding pin sequentially include a third pressing plate, a thin shaft portion, a thick shaft portion, and a pin base, which are connected to each other; the third pressing plate and the pin shaft base protrude out of the first handheld part and/or the second handheld part; the diameter of the thin shaft part corresponds to the width of the sliding opening; the diameter of the thick shaft part corresponds to the diameter of the positioning hole.

Further, in different embodiments, the locking device further includes one or two linking plates, one end of each linking plate is connected to the first fixed pin, and the other end of each linking plate is connected to the pin base of the first sliding pin and/or the second sliding pin.

Further, in various embodiments, when the third pressing plate is pressed downward, the thick shaft portion is disengaged from one positioning hole; the locking device is in an unlocking state; the thin shaft part passes through a sliding opening and slides to the next positioning hole; when the third pressing plate is released, the thick shaft enters the next positioning hole, and the locking device is in a locking state.

Further, in various embodiments, the foldable handheld device further comprises an elastic support having an inverted V-shaped cross section. The elastic supporting piece comprises a first bracket, a second bracket and an arc corner, and one end of the first bracket penetrates through and is fixed to the first handheld part and the first clamping part; one end of the second bracket penetrates through and is fixed to the second holding part and the second clamping part, and the other end of the second bracket is connected to the first bracket; the arc corner is located at the joint of the first support and the second support, and the inner side face of the arc corner is tangent to the outer surface of the first fixed pin shaft.

Further, in various embodiments, the first or second hand-held portion comprises a handle; or, the handle comprises a handle and a protective sleeve, wherein the protective sleeve is sleeved outside the handle.

Further, in various embodiments, the open-close type hand-held device includes, but is not limited to, a clamping tool and a shearing tool; the gripping tool includes, but is not limited to, pliers; the cutting tool includes, but is not limited to, scissors.

Another objective of the present invention is to provide an angle adjusting method for a handheld portion of an opening/closing type handheld device, which effectively solves the technical problems of inconvenient operation and use of the opening/closing type handheld device under special application conditions in the prior art.

In order to solve the above technical problem, the present invention provides an angle adjusting method for a hand-held portion of an opening and closing type hand-held device, comprising the steps of: unlocking the first hand-held part; rotating the first hand-held portion relative to the first clamping portion; locking the first handle; the plane of the rotation path of the first handheld part is the same as or parallel to the opening and closing plane.

In order to solve the above technical problem, the present invention further provides an angle adjusting method for a hand-held portion of an opening and closing type hand-held device, comprising the steps of: unlocking the first hand-held part; rotating the first hand-held portion relative to the first clamping portion; locking the first handle; unlocking the second hand-held part; rotating the second gripping portion relative to the second gripping portion; locking the second hand-held part; the plane of the rotation path of the first handheld part is the same as or parallel to the opening and closing plane; the plane of the rotation path of the second handheld part is the same as or parallel to the opening and closing plane.

The invention has the advantages that the invention provides the opening-closing type hand-held device and the hand-held part angle adjusting method thereof, and a user can automatically adjust the relative angle between the hand-held part and the clamping part of the hand-held tool in the opening-closing direction according to the size of the hand and the force exerting habit of the user and lock the hand-held tool, so that the user can operate and use the hand-held tool at the most familiar and convenient force exerting angle.

Under some special application conditions, for example, when the size of the clamped object is larger, the opening angle of the clamping part is larger, but the opening angle of the handheld part can be adjusted to a proper position, so that the distance between the two tail ends of the opened handheld part can be relatively smaller, a user can apply force at the tail ends of the two handheld parts by one hand, the operation can be smoothly completed, and the clamping device is more labor-saving compared with a common opening and closing device.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

Drawings

Fig. 1 is a schematic overall structure diagram of an opening and closing type handheld device in embodiment 1 of the present invention;

fig. 2 is a schematic overall structure diagram of another foldable handheld device in embodiment 1 of the present invention;

fig. 3 is an exploded schematic view of an open-close type handheld device in embodiment 1 of the present invention;

fig. 4 is a schematic structural view of the upper portions of the extension portion and the protrusion portion in embodiment 1 of the present invention;

fig. 5 is a schematic structural view of the lower portions of the extension portion and the protruding portion in embodiment 1 of the present invention;

fig. 6 is a schematic view of the overall structure of the spline block in embodiment 1 of the present invention;

FIG. 7 is a schematic cross-sectional view showing a locking device in a locked state according to embodiment 1 of the present invention;

fig. 8 is a schematic sectional view showing a locking device in an unlocked state according to embodiment 1 of the present invention;

fig. 9 is a schematic shape diagram of the foldable handheld device according to embodiment 1 of the present invention after the angle of the handheld portion is adjusted;

fig. 10 is a schematic overall structure diagram of an opening and closing type handheld device according to embodiment 2 of the present invention;

fig. 11 is an exploded schematic view of an opening/closing type handheld device according to embodiment 2 of the present invention;

FIG. 12 is an exploded perspective view of a lock device according to embodiment 2 of the present invention;

fig. 13 is a schematic structural view of a locking device in a locked state according to embodiment 2 of the present invention;

FIG. 14 is a schematic structural diagram of a limiting block in embodiment 2 of the present invention;

fig. 15 is a schematic overall structure diagram of an opening and closing type handheld device according to embodiment 3 of the present invention;

fig. 16 is an exploded view of an open-close type handheld device according to embodiment 3 of the present invention;

FIG. 17 is an exploded perspective view of a lock device according to embodiment 3 of the present invention;

fig. 18 is a schematic overall structure diagram of an opening and closing type handheld device according to embodiment 4 of the present invention;

fig. 19 is an exploded view of an open-close type handheld device according to embodiment 4 of the present invention;

fig. 20 is a schematic structural view of an opening/closing type handheld device in embodiment 4 of the present invention;

fig. 21 is a flowchart of a method for adjusting an angle of a hand-held portion of an opening/closing type hand-held device according to embodiment 5 of the present invention;

fig. 22 is a flowchart of another method for adjusting the angle of the hand-held portion of the foldable hand-held device in embodiment 5 of the present invention.

The components in the figure are labeled as follows:

1 a first part, 2 a second part, 3 a first pin shaft, 4 a locking device;

11 a first holding part, 12 a first clamping part, 21 a second holding part and 22 a second clamping part;

31 an extension, 32 a projection, 33 a second pin;

101 a first pressing plate, 102 annular sawteeth, 103 a spline block, 104 a first spring, 105 a nut, 106 a button groove, 107 a nut groove, 108 an angle mark, 109 a positioning mark, 110 a handle and 111 a protective sleeve;

201 a semicircular gear, 202 a limit block, 203 a sliding buckle, 204 a second spring, 205 a U-shaped groove and 206 a spring mounting groove;

301 a circular gear, 302 a mounting base, 303 a pressing buckle, 304 a third pin shaft and 305 a third spring;

311 a first mounting plate, 312 a second mounting plate, 313 an assembly groove, 314 a first mounting hole, 315 a second mounting hole, 321 a third mounting hole;

401, an elastic supporting piece, 402, a first sliding pin shaft, 403, a first fixed pin shaft, 404, a second fixed pin shaft, 405, a positioning hole, 406, a sliding port, 407, a linkage plate and 408, wherein the elastic supporting piece, the first sliding pin shaft, the first fixed pin shaft, the second fixed pin shaft, the positioning hole, the 406, the linkage plate and the;

1031 a first clamping strip, 1032 a first notch, 1033 a first rack, 1034 a second notch, 1035 a second rack;

2031, 2032, 2033, 2034 and a second spring installation column;

3021, a base pin shaft hole, 3031, a second pressing plate, 3032 clamping parts, 3033, a third clamping strip, 3034, a pressing plate pin shaft hole, and 3035, a third spring mounting column;

4011 first shelf, 4012 second shelf, 4013 arc corner;

4021A third pressing plate, 4022 thin shaft part, 4023 thick shaft part, 4024 pin shaft base.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, which are included to demonstrate that the invention can be practiced and to provide those skilled in the art with a complete description of the invention that will make the technical content more clear and understandable. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.

In the drawings, elements having the same structure are denoted by the same reference numerals, and elements having similar structure or function are denoted by the same reference numerals throughout. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.

Directional phrases used in connection with the present invention, such as, for example, upper, lower, front, rear, left, right, inner, outer, side, top, bottom, end, etc., are used in the drawings only to describe and illustrate the present invention and are not intended to limit the scope of the present invention.

When certain components are described as being "on" another component, the components can be directly on the other component; there may also be an intermediate member disposed on the intermediate member and the intermediate member disposed on the other member. When an element is referred to as being "mounted to" or "connected to" another element, they may be directly "mounted to" or "connected to" the other element or indirectly "mounted to" or "connected to" the other element through an intermediate element.

Example 1

As shown in fig. 1 to 2, embodiment 1 provides an open-close type hand-held device including a first member 1 and a second member 2.

The first component 1 comprises a first handheld part 11 and a first clamping part 12; the first handheld part 11 is positioned at the bottom of the first component 1; the first clamping part 12 is positioned on the top of the first component 1; the second member 2 includes a second holding portion 21 and a second clamping portion 22; the second holding part 21 is positioned at the bottom of the second component 2; the second clamping portion 22 is located on top of the second part 2. The first clamping part 12 and the second clamping part 22 are rotatably and movably connected through a first pin shaft 3; the first clamping part 12 and the second clamping part 22 are oppositely opened and closed, and the plane of the opening and closing path is an opening and closing plane; the second clamping part 22 is arranged opposite to the top end and/or the bottom end of the first clamping part 12; the second hand-held portion 21 is provided opposite to the first hand-held portion 11.

One technical feature of the present embodiment is that, as shown in fig. 2, the first holding portion 11 is rotatably connected to the first clamping portion 12; the plane of the rotation path of the first handheld portion 11 is the same as or parallel to the opening and closing plane. The connection between the first holding portion 11 and the first clamping portion 12 is provided with a locking device 4 for locking or unlocking the first holding portion 11 and the first clamping portion 12.

Another technical feature of this embodiment is that the second holding portion 21 is rotatably connected to the second holding portion 22; the plane of the rotation path of the second holding part 21 is the same as or parallel to the opening and closing plane. A locking device 4 is arranged at the joint of the second holding part 21 and the second clamping part 22 and used for locking or unlocking the second holding part 21 and the second clamping part 22.

As shown in fig. 1, the present embodiment may have both of the above two technical features, or may have only one of the two technical features.

In the present embodiment, the locking device 4 is originally in the locked state and can be used normally. When the angle of the first handheld portion 11 or the second handheld portion 21 needs to be adjusted, the locking device 4 needs to be unlocked first, then the first handheld portion 11 or the second handheld portion 21 is rotated to a required angle relative to the first clamping portion 12 or the second clamping portion 22, and then the locking device 4 is locked, so that the first handheld portion 11 and the first clamping portion 12 are kept relatively fixed, or the second handheld portion 21 and the second clamping portion 22 are kept relatively fixed, so as to be used continuously. Before the normal use of this embodiment, can adjust the angle between handheld portion and the clamping part. However, during the use process, the two clamping parts are opened and clamped to the object to be clamped, the hand-held part and the clamping parts are kept in a locking state, and the two clamping parts are fixed relatively.

As shown in fig. 3-5, the locking device 4 includes an extension 31, a protrusion 32, and a second pin 33.

The extension portion 31 is arranged at the bottom end of the first clamping portion 12, the cross section of the extension portion 31 is approximately U-shaped, the extension portion 31 comprises a first mounting plate 311, a second mounting plate 312 and an assembling groove 313, the second mounting plate 312 is arranged opposite to the first mounting plate 311, and the assembling groove 313 is arranged between the first mounting plate 311 and the second mounting plate 312; the assembly groove 313 is for inserting the protrusion 32; the second mounting plate 312 corresponds to the first mounting plate 311 in shape and size.

The protrusion 32 is disposed at the top end of the first holding portion 11 and inserted into the extension 31, specifically, into the assembling groove 313; the second pin 33 passes through the extension 31 and the protrusion 32; the protrusion 32 is movably connected to the extension 31 by a second pin 33, so that the first holding portion 11 can rotate relative to the first clamping portion 12.

The first mounting plate 311 includes a first mounting hole 314, and the second mounting plate 312 includes a second mounting hole 315. The second mounting hole 315 is disposed opposite to the first mounting hole 314, and corresponds to the first mounting hole 314 in shape and size. The protrusion 32 includes a third mounting hole 321 corresponding to the shape and size of the first and second mounting holes 314 and 315. When the protrusion 32 is inserted into the assembly groove 313, the second pin 33 passes through the first mounting hole 314, the third mounting hole 321, and the second mounting hole 315 in sequence.

In the present invention, the extension portion 31 and the protrusion portion 32 of the locking device 4 rotate relatively via the second pin 33 to drive the relative rotation of the handle portion and the clamping portion.

As shown in fig. 6 to 8, the locking device 4 further includes a first pressing plate 101, an annular serration 102, a spline block 103, a first spring 104, and a nut 105.

The first pressing plate 101 is disposed on the top of the second shaft pin 33, the second shaft pin 33 is perpendicular to the first pressing plate 1011, and the outer sidewall of the lower end of the second shaft pin 33 is provided with an external thread for mounting the nut 105.

As shown in fig. 4 and 5, the annular saw teeth 102 are respectively disposed on inner sidewalls of the first mounting hole 314, the third mounting hole 321, and the second mounting hole 315.

As shown in fig. 6-8, the spline block 103 is cylindrical, and has a cylindrical cavity therein, which is sleeved outside the sliding rod 1012; more than two first clamping strips 1031 are uniformly distributed on the outer side wall of the spline block 103, the first clamping strips 1031 are parallel to the sliding rod 1012, and the cylindrical body of the spline block 103 and the plurality of first clamping strips 1031 together form a gear device which is meshed with the annular saw teeth 102. Each first locking strip 1031 includes, in order from top to bottom, a first notch 1032, a first rack 1033, a second notch 1034, and a second rack 1035. The length of the first rack 1033 is smaller than the depth of the third mounting hole 321; the length of the second rack 1035 is less than the maximum compression distance of the first spring 104; the length of the second notch 1034 is greater than the depth of the third mounting hole 321. The length of these components is set to ensure that when the spline block 103 is in the original position, the first holding portion 11 and the first clamping portion 12 are kept relatively fixed (the locking device 4 is in the locking state); when the spline block 103 slides down, the first holding portion 11 and the first clamping portion 12 are relatively separated (the locking device 4 is in an unlocked state), so that the first holding portion 11 and the first clamping portion 12 can rotate relatively.

The first spring 104 is sleeved outside the second pin 33, the top end of the first spring 104 is connected to the bottom of the first pressing plate 101, and the bottom end thereof is sleeved on the top of the spline block 103. When the first pressing plate 101 is pressed downward, the spline block 103 slides downward; when the first pressing plate 101 is released, the spline block 103 can be restored and slide upward to the original position by the first spring 104.

The nut 105 is sleeved at the lower end of the second pin shaft 33, an inner thread is arranged on the inner side wall of the nut 105, the nut 105 corresponds to the outer thread of the second pin shaft 33, and the nut 105 is in threaded connection with the lower end of the second pin shaft 33, so that the first pressing plate 101, the spline block 103 and the first spring 104 are combined into a whole and cannot be separated from each other.

As shown in fig. 7, in the normal state, the first spring 104 is in a relaxed state; the plurality of first racks 1033 of the spline block 103 are engaged with the annular saw teeth 102 in the first and third mounting holes 314 and 321; a plurality of second racks 1035 are engaged with the annular saw teeth 102 in the second mounting holes 321; the extension 31 and the protrusion 32 are fixed relative to each other, the lock device 4 is kept in a locked state, and the first grip 11 and the first grip 12 are kept fixed relative to each other.

As shown in fig. 8, when the button 101 is pressed downward, the first spring 104 is in a compressed state; the first rack 1033 is engaged with only the annular saw tooth in the third mounting hole 321, and completely disengaged from the annular saw tooth in the first mounting hole 314 and the second mounting hole 315, and the locking device 4 is unlocked and adjusted to an unlocked state, so that the extension portion 31 and the protrusion portion 32 can rotate relative to each other about the second pin axis, and the first grip portion 11 can rotate relative to the first holding portion 12.

When the first pressing plate 101 is released after the rotation is completed, as shown in fig. 7, the first spring 104 is in a relaxed state; the first rack 1033 is meshed with the annular saw teeth in the first mounting hole 314 and the third mounting hole 321; the second rack 1035 engages with the annular serration in the second mounting hole 321; the extension portion 31 and the protrusion portion 32 are fixed relatively, the lock device 4 is in a locked state, and the first grip portion 11 and the first clamping portion 12 are fixed relatively.

As shown in fig. 4 and 5, the locking device 4 further includes a button groove 106 and a nut groove 107, and the button groove 106 is disposed on the top of the first mounting plate 311 and above the first mounting hole 314 for placing the first pressing plate 1011. The nut groove 107 is disposed at the bottom of the second mounting plate 312 and below the second mounting hole 315 for placing the nut 105.

As shown in fig. 4, in embodiment 1, the locking device 4 further includes an angle indicator 108 and a positioning indicator 109. The angle mark 108 is arranged at the top of the first mounting plate 311 and is positioned around the button slot 106; the angle indicator 109 is used to indicate the rotation angle of the first hand-held portion 11 relative to the first clamping portion 12. The positioning mark 109 is arranged at the top of the first handheld part 11 and close to one end of the protruding part 32; the positioning mark 109 points to any angle value on the angle mark 108. The angle indicator 108 is used in conjunction with the positioning indicator 109 to allow the user to know and adjust the deflection angle of the handpiece in real time.

The open-close type hand-held device comprises but is not limited to a clamping tool and a shearing tool; the gripping tool includes, but is not limited to, pliers; the cutting tool includes, but is not limited to, scissors.

As shown in fig. 1 and 2, embodiment 1 provides an opening and closing type handheld device, specifically, a pair of nipper pliers, wherein the first clamping portion 12 and the second clamping portion 22 are pliers heads, the first handheld portion 11 and the second handheld portion 21 include a handle 110, and may further include a protective sleeve 111, which is sleeved outside the handle 110. One handle is fixedly connected with the forceps head, the joint of the other handle and the forceps head can rotate, the rotation direction of the handle is consistent with the opening and closing direction of the forceps head, and the plane of the rotation path of the handle 110 is the same as or parallel to the opening and closing plane of the forceps head.

The technical effect of embodiment 1 is that embodiment 1 includes two hand-held portions, one or both of which may be rotated relative to the gripping portion. In some special cases, such as the case where the space is too small or the holding portion is too wide, the user can adjust the angle of one or both of the hand-held portions to adjust the distance between the two hand-held portions and the operation angle, so that the operation and use can be more convenient. As shown in fig. 10, in comparison to the solution in which the angles of the two hand-held portions can be adjusted, the solution in which the angle of the two hand-held portions can be adjusted has a wider range of adjustable angles, and the solution in which the angle of the two hand-held portions can be adjusted has a wider range of adjustable distances between the two hand-held portions.

Example 2

As shown in fig. 10-14, embodiment 2 provides another foldable handheld device, and in particular, a pair of long flat nose pliers, including most technical solutions in embodiment 1, in which the locking device 4 includes an extension 31, a protrusion 32, and a second pin 33, and the structural functions and principles thereof are the same as those of the embodiment, and are not described herein again. In addition, compared with the embodiment 1, the opening-closing type handheld device described in the embodiment 2 has the technical features that: the locking device 4 further comprises a semicircular gear 201, a limiting block 202, a sliding buckle 203 and a second spring 204.

As shown in fig. 13 and 14, the semicircular gear 201 is formed at the end of the first mounting plate 311 and/or the second mounting plate 312. Generally, as long as the semicircular gear 201 is provided at the end of one mounting plate, the slide fastener 203 can be fastened to the semicircular gear 201 to perform a position locking function. If the tail end of the other mounting plate is also provided with the semicircular gear 201, the semicircular gear cannot be directly combined with the sliding buckle 203 to play a role in locking, but the assembly and the replacement of parts can be more convenient.

If both handgrips are pivotably connected to the grip portion, neither the handgrips nor the grip portions are designed in one piece, but are assembled to each other. If only one mounting plate end is provided with the semicircular gear 201, the two handholds can only be fixedly mounted on a specific clamping part, the shapes of the left handholds and the right handholds are not consistent, and the left handholds and the right handholds cannot be replaced. For the convenience of production and assembly, and also for the convenience of maintenance and replacement of parts, a semicircular gear 201 may be disposed at the end of each of the first mounting plate 311 and the second mounting plate 312.

The stopper 202 protrudes from the upper surface of the first hand-held portion 11 or the second hand-held portion 21 and is close to the protrusion 32, and specifically, the stopper 202 protrudes from the upper surface of the handle. The limiting block 202 is provided with a U-shaped groove 205, the opening direction of the U-shaped groove 205 faces the semicircular gear 201, and the bottom of the U-shaped groove 205 is provided with a spring mounting groove 206 for mounting the second spring 2034.

The sliding buckle 203 is disposed in the U-shaped groove 205, and the sliding buckle 203 includes a buckle body 2031, a buckle toggle 2032, a second clamping strip 2033, and a second spring mounting post 2034. The shape of the buckle body 2031 corresponds to the shape of the bottom of the U-shaped groove 205, and is perpendicular to the protrusion 32, and the buckle button 2032 is disposed above the buckle body 2031 and protrudes from the upper surface of the first handle 11. The second clamping strip 2033 protrudes out of the sidewall of the buckle body 2031 and faces one side of the semicircular gear 201, the second clamping strip 2033 is perpendicular to the protrusion 32, and the length of the second clamping strip 2033 corresponds to the length of the buckle body 2031 and can be used for being clamped to the semicircular gear 201. The height of the second clip strip 2033 protruding out of the clip body 2031 is less than the maximum compression distance of the second spring 2034, when the clip button 2032 is turned down, the second spring 2034 is compressed, the second clip strip 2033 can be completely retracted into the U-shaped groove 205, so that the extension 31 and the protrusion 32 can rotate, and the hand-held portion and the support portion are driven to rotate relatively. The second spring mounting post 2034 is disposed on the sidewall of the latch body 2031 and faces one side of the spring mounting slot 206. The second spring mounting post 2034 is parallel to the protrusion 32 and the second spring mounting post 2034 is collinear with the spring mounting slot 206 and is used to mount the second spring 204.

The second spring 204 is sleeved on the second spring mounting post 2034; one end of the second spring 204 is tangent to the clip body 2031, the other end is located in the spring installation groove 206, the sliding clip 203 can slide back and forth in the U-shaped groove 205, and the second spring 204 can assist the sliding clip 203 in resetting.

In operation, in the normal state, the second spring 204 is in a relaxed state; the second locking bar 2033 is locked to the half-round gear 201, the locking device 4 maintains the locked state, and the holding part 11/21 can maintain a relative fixation with the clamping part 12/22.

When the buckle toggle 2032 is toggled down, the second spring 204 is in a compressed state; the second locking strip 2033 retracts into the U-shaped groove 205, disengages from the semicircular gear 201, the locking device 4 is unlocked and adjusted to the unlocked state, and the handheld portion 11/21 can rotate relative to the clamping portion 12/22, that is, the first handheld portion 11 rotates relative to the first clamping portion 12; alternatively, the second grip 21 may be rotated relative to the second grip 22.

After the rotation is finished, the buckle toggle 2032 is released, and the second spring 204 is in a relaxed state again; the second locking bar 2033 is engaged with the semicircular gears 201 of the first and second mounting plates 311, 312, the locking device 4 is restored and maintains the locked state, and the hand-held portion 11/21 can be kept relatively fixed with respect to the clamping portion 12/22.

The technical effect of embodiment 2 is that embodiment 2 includes two hand-held portions, one or both of which may be rotated relative to the grip portion. In some special cases, such as the case where the space is too small or the holding portion is too wide, the user can adjust the angle of one or both of the hand-held portions to adjust the distance between the two hand-held portions and the operation angle, so that the operation and use can be more convenient. In contrast, the two hand-held portions can be adjusted in angle, and compared with the single hand-held portion, the range of the adjustable angle is larger, and the adjustable distance between the two hand-held portions is larger. Compared with the embodiment 1, the component structure in the embodiment 2 is simpler, the processing cost is relatively lower, the use is convenient, and the application is wider.

Example 3

As shown in fig. 15-17, embodiment 3 provides another foldable handheld device, and in particular, a pair of long flat nose pliers, including most technical solutions in embodiment 1, in which the locking device 4 includes an extension 31, a protrusion 32, and a second pin 33, and the structural functions and principles thereof are the same as those of the embodiment, and are not described herein again. In addition, compared with the embodiment 1, the opening-closing type handheld device described in the embodiment 3 has the technical features that: the locking device 4 comprises a circular gear 301, two oppositely arranged mounting bases 302, a pressing buckle 303, a third pin 304 and a third spring 305.

The circular gear 301 protrudes from the upper surface of the first mounting plate 311; the circular gear 301 is fixed to the first mounting plate 311, or is provided integrally with the first mounting plate 311.

Two oppositely arranged mounting bases 302 protrude from the upper surface of the first handheld part 11 and/or the second handheld part 21 and are close to the protruding part 32; the two mounting bases 302 are respectively provided with a base pin hole 3021, and the two base pin holes 3021 are located on the same straight line.

The pressing buckle 303 is disposed between the two mounting bases 302, and the pressing buckle 303 includes a second pressing plate 3031, a clamping portion 3032, and a third clamping strip 3033. One end of the second pressing plate 3031 close to the protruding part 32 is provided with a pressing plate pin shaft hole 3034 which is positioned on the same straight line with the two base pin shaft holes 3021; the other end of the spring mounting post 3035 is provided with a third spring mounting post which protrudes out and is vertical to the lower surface of the second pressing plate 3031. The clamping portion 3032 is arranged at one end, close to the protruding portion 32, of the second pressing plate 3031, and an included angle of 120-160 degrees is formed between the clamping portion 3032 and the second pressing plate 3031; the third strip 3033 is disposed on the top of the clamping portion 3032, and the third strip 3033 protrudes downward and faces the circular gear 301.

The third pin 304 passes through both the press plate pin hole 3034 and the two base pin holes 3021.

The third spring 305 is sleeved outside the third spring mounting post 3035, one end of the third spring 305 is tangent to the lower surface of the second pressing plate 3031, and the other end of the third spring 305 is tangent to the upper surfaces of the handheld portions 11 and 21.

In operation, in the normal state, the third spring 305 is in a relaxed state; the third clip 3033 is clipped to the circular gear 301, the locking device 4 maintains the locked state, and the holding portion 11/21 can maintain relative fixation with the clamping portion 12/22.

When the second pressing plate 3031 is pressed downward, the third spring 305 is in a compressed state; the third strip 3033 is lifted upwards to be separated from the circular gear 301, the locking device 4 is unlocked and adjusted to be in an unlocked state, and the handheld part 11/21 can rotate relative to the clamping part 12/22, namely the first handheld part 11 rotates relative to the first clamping part 12; alternatively, the second grip 21 may be rotated relative to the second grip 22.

After the rotation is finished, the second pressing plate 3031 is released, and the third spring 305 is in a relaxed state again; the third strip 3033 snaps to the circular gear 301, the locking device 4 restores and maintains the locked state, and the hand-held portion 11/21 may remain relatively fixed with respect to the clamping portion 12/22.

The technical effect of example 3 is that example 3 includes two hand-held portions, one or both of which may be rotated relative to the gripping portion. In some special cases, such as the case where the space is too small or the holding portion is too wide, the user can adjust the angle of one or both of the hand-held portions to adjust the distance between the two hand-held portions and the operation angle, so that the operation and use can be more convenient. In contrast, the two hand-held portions can be adjusted in angle, and compared with the single hand-held portion, the range of the adjustable angle is larger, and the adjustable distance between the two hand-held portions is larger. Compared with the embodiment 1, the part structure in the embodiment 3 is simpler, the processing cost is relatively lower, the use is convenient, and the application is wider.

Example 4

As shown in fig. 18 to 19, embodiment 4 provides another foldable handheld device, specifically, a pair of scissors, which includes some technical solutions in embodiment 1, and compared with embodiment 1, the technical features of the foldable handheld device are as follows: the locking device 4 does not comprise an extension 31, a projection 32, a second pin 33, but an elastic support 401, the cross section of which is in the form of an inverted V. The open-close type hand-held device comprises but is not limited to a clamping tool and a shearing tool; the cutting tool includes, but is not limited to, scissors.

As shown in fig. 19, in one embodiment, the locking device 4 further comprises a first sliding pin 402, a first fixed pin 403, and a second fixed pin 404.

The first sliding pin shaft 402 is arranged at the joint of the upper part of the first handheld part 11 and the bottom end of the first clamping part 12; the first fixed pin shaft 403 is arranged at the joint of the top end of the first handheld part 11 and the top end of the second handheld part 21; the first slide pin 402 is slidably mounted to the first clamping portion 12. The second fixing pin 404 is disposed at the connection position of the upper portion of the second holding portion 21 and the bottom end of the second clamping portion 22.

The resilient support 401 includes a first shelf 4011, a second shelf 4012, and radiused corners 4013. One end of the first support 4011 penetrates and is fixed to the first holding portion 11 and the first clamping portion 12, and the other end thereof is connected to the second support 4012. One end of the second support 4012 penetrates and is fixed to the second grip portion 21 and the second grip portion 22, and the other end thereof is connected to the first support 4011. The arc corner 4013 is located at the joint of the first support 4011 and the second support 4012, and the inner side surface of the arc corner 4013 is tangent to the outer surface of the first fixed pin 403. The resilient support 401 may assist in the separation of the two jaws to facilitate their opening. In order to keep the two clamping portions closed, a ferrule 408 may be provided at the bottom of the hand-held portion for fixing the relative position of the two hand-held portions when the open-close type hand-held device is in the closed state.

When the two clamping parts are kept in a relatively static state (the scissors are in a closed state), the fixed pin shaft is arranged at the joint of the handheld part and the clamping parts, so that the handheld part and the clamping parts cannot rotate relatively, and once the handheld part and the clamping parts rotate, the two clamping parts are inevitably separated from each other (the scissors are in an open state). When the two clamping parts keep a relative static state, a sliding pin shaft is arranged at the joint of the handheld part and the clamping parts, so that the handheld part and the clamping parts can rotate relatively within a certain angle.

In another embodiment, the locking device 4 comprises a first sliding pin 402, a first fixed pin 403, and a second sliding pin (not shown) which is identical in structure to the first sliding pin 402. The first sliding pin shaft 402 is arranged at the joint of the upper part of the first handheld part 11 and the bottom end of the first clamping part 12; the first fixed pin shaft 403 is arranged at the joint of the top end of the first handheld part 11 and the top end of the second handheld part 21; the second sliding pin shaft is arranged at the joint of the upper part of the second handheld part 21 and the bottom end of the second clamping part 22. A first sliding pin 403 is slidably mounted to the first clamping portion 12; the second sliding pin is slidably mounted to the second clamping portion 22. When the two clamping parts keep a relative static state, the connecting parts of the two groups of handheld parts and the clamping parts are respectively provided with a sliding pin shaft, so that the two groups of handheld parts and the clamping parts can rotate relatively within a certain angle, and the adjusting range is larger compared with the previous embodiment.

As shown in fig. 20, the first slide pin 402 or the second slide pin (not shown) includes a third pressing plate 4021, a thin shaft portion 4022, a thick shaft portion 4023, and a pin base 4024 connected to each other in this order; the third pressing plate 4021 and the pin base 4024 protrude from the first hand-held portion 11 or the second hand-held portion 21. As shown in fig. 19, the locking device 4 further includes two or more positioning holes 405 and at least one sliding port 406 communicating with each other. More than two positioning holes 405 communicated with each other are arranged at the bottom end of the first clamping part 12 and/or the second clamping part 22; the first sliding pin 402 and/or the second sliding pin 404 can be slidably mounted in the positioning hole 405; each sliding opening 406 is provided at a communication position between two adjacent positioning holes. The locking device 4 further comprises one or two linkage plates 407, one end of which is connected to the first fixed pin 403, and the other end of which is connected to the pin base 4024 of the first sliding pin 402 and/or the second sliding pin 404.

In a normal state, the thick shaft portion 4023 is located in one positioning hole 405, the locking device 4 is in a locked state, and since the diameter of the thick shaft portion 4023 corresponds to the diameter of the positioning hole 405, the thick shaft portion 4023 can fix the hand-held portions 11 and 21 and the clamping portions 12 and 22 relative to each other, and the locking device 4 is in a locked state. When the third pressing plate 4021 is pressed downward, the linking plate 407 deforms, and the thick shaft 4023 is separated from one positioning hole 405; the lock device 4 is unlocked and adjusted to an unlocked state. Since the diameter of the thin shaft portion 4022 corresponds to the width of the sliding opening 406, the thin shaft portion 4022 passes through one sliding opening 406 between two positioning openings 405, and slides to the next positioning opening 405, when the third pressing plate 4021 is released, the linking plate 407 returns to deform, the thick shaft portion 4023 enters and snaps into the next positioning opening 405, and the locking device 4 is in the locking state again.

The technical effect of embodiment 4 is that embodiment 4 comprises two hand-held parts, and when the two clamping parts are kept in a relative static state, one or two hand-held parts can rotate relative to the clamping parts, so that the angle of one or two handles of the scissors can be adjusted. In some special occasions, such as the situation that the space is too small or the clamping part is too large, the user can adjust the angle of one or two handheld parts to adjust the distance between the two handheld parts and the operation angle, so that the hand shape and the use habit of the user can be adapted, and the operation and the use can be more convenient. In contrast, the two hand-held portions can be adjusted in angle, and compared with the single hand-held portion, the range of the adjustable angle is larger, and the adjustable distance between the two hand-held portions is larger.

Example 5

As shown in fig. 21, embodiment 5 provides another method for adjusting an angle of a handheld portion of an open-close type handheld device, where the open-close type handheld device is any one of embodiments 1 to 4, and specifically includes the following steps:

step S101) unlocking the first handheld part; the locking device of the first handheld portion of the foldable handheld device of any one of embodiments 1 to 4 is opened to change the locked state to the unlocked state.

Step S102) rotating the first hand-held portion within an adjustable range with respect to the first clamping portion; the plane of the rotation path of the first handheld part is the same as or parallel to the opening and closing plane. The step can adjust the angle and the distance between the two handheld parts so as to adapt to the limitation of the operation space and the operation habit of the user. The adjustable range is an angle range which is rotated by 0-90 degrees leftwards or rightwards in the embodiments 1-3, and is limited by a plurality of positioning holes in the embodiment 4, and the specific range is determined by the number of the positioning holes.

Step S103) locking the first hand-held portion; the locking device of the first handheld portion in the foldable handheld device according to any one of embodiments 1 to 4 is re-adjusted to the locked state.

Before the opening-closing type handheld device is used, the angle adjusting method of the handheld part is utilized to carry out angle adjustment processing on the handheld part on one side of the opening-closing type handheld device, so that the angle between the handheld part on one side and the clamping part is changed, the distance between the two handheld parts is changed, tool using habits of users can be met, the operation of the users can be more labor-saving, and the opening-closing type handheld device can be better suitable for different working conditions.

As shown in fig. 22, embodiment 5 further provides another method for adjusting an angle of a handheld portion of an open-close type handheld device, where the open-close type handheld device is any one of embodiments 1 to 4, and specifically includes the following steps:

step S201) unlocking the first hand-held portion; the locking device of the first handheld portion of the foldable handheld device of any one of embodiments 1 to 4 is opened to change the locked state to the unlocked state.

Step S202) rotating the first hand-held portion within an adjustable range with respect to the first clamping portion; the plane of the rotation path of the first handheld part is the same as or parallel to the opening and closing plane. The step can adjust the angle and the distance between the two handheld parts so as to adapt to the limitation of the operation space and the operation habit of the user. The adjustable range is an angle range which is rotated by 0-90 degrees leftwards or rightwards in the embodiments 1-3, and is limited by a plurality of positioning holes in the embodiment 4, and the specific range is determined by the number of the positioning holes.

Step S203) locking the first hand-held portion; the locking device of the first handheld portion in the foldable handheld device according to any one of embodiments 1 to 4 is re-adjusted to the locked state.

Step S204) unlocking the second handheld part; the locking device of the second handheld portion in the foldable handheld device of any one of embodiments 1 to 4 is opened to change the locked state to the unlocked state.

Step S205) rotating the second hand-held portion within an adjustable range with respect to the second gripping portion; the plane of the rotation path of the second handheld part is the same as or parallel to the opening and closing plane. The step can adjust the angle and the distance between the two handheld parts so as to adapt to the limitation of the operation space and the operation habit of the user. The adjustable range is an angle range which is rotated by 0-90 degrees leftwards or rightwards in the embodiments 1-3, and is limited by a plurality of positioning holes in the embodiment 4, and the specific range is determined by the number of the positioning holes.

Step S206) locking the second handheld part; the locking device of the second handheld portion in the foldable handheld device according to any one of embodiments 1 to 4 is re-adjusted to the locked state.

Before the opening-closing type handheld device is used, the angle adjusting method of the handheld parts is used for carrying out angle adjustment processing on the handheld parts on the two sides of the opening-closing type handheld device, so that the angle between the handheld parts on the two sides and the clamping part is changed, the distance between the two handheld parts is changed, the use habit of a user can be met, the operation of the user can be more labor-saving, and the opening-closing type handheld device can be better suitable for different working conditions.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. An open-close type hand-held device comprises a first part and a second part;

the first component comprises a first clamping part and a first handheld part;

the second component comprises a second clamping part and a second holding part;

the first clamping part and the second clamping part are movably connected in a rotating way through a first pin shaft;

the first clamping part and the second clamping part are oppositely opened and closed, and the plane where the opening and closing path is located is an opening and closing plane; it is characterized in that the preparation method is characterized in that,

the first handheld part is rotatably connected to the first clamping part;

the plane of the rotation path of the first handheld part is the same as or parallel to the opening and closing plane;

and a locking device is arranged at the joint of the first handheld part and the first clamping part and used for locking or unlocking the first handheld part and the first clamping part.

2. The device of claim 1,

the second holding part is rotatably connected to the second clamping part;

the plane of the rotation path of the second handheld part is the same as or parallel to the opening and closing plane;

and a locking device is arranged at the joint of the second handheld part and the second clamping part and used for locking or unlocking the second handheld part and the second clamping part.

3. An open-close hand-held device according to claim 1 or 2, wherein the locking means comprises

The extension part is arranged at the bottom end of the first clamping part or the second clamping part;

the protrusion part is arranged at the top end of the first handheld part or the second handheld part and is inserted into the extension part;

the second pin shaft penetrates through the extension part and the protruding part;

wherein the protrusion is movably connected to the extension portion by the second pin.

4. The expandable hand-held device of claim 3 wherein the extension comprises

A first mounting plate;

a second mounting plate disposed opposite the first mounting plate;

and the assembling groove is arranged between the first mounting plate and the second mounting plate and is used for inserting the protruding part.

5. The device of claim 4,

the first mounting plate comprises a first mounting hole;

the second mounting plate comprises a second mounting hole which is opposite to the first mounting hole;

the protrusion includes a third mounting hole;

when the protruding part is inserted into the assembling groove, the second pin shaft sequentially penetrates through the first mounting hole, the third mounting hole and the second mounting hole.

6. The device of claim 5, wherein the locking device further comprises

The first pressing plate is arranged at the top of the second shaft pin;

the annular saw teeth are arranged on the inner side walls of the first mounting hole, the third mounting hole and the second mounting hole;

the spline block is sleeved outside the second shaft pin; more than two first clamping strips are uniformly distributed on the outer side wall of the spline block, and the first clamping strips are parallel to the second shaft pin;

the first spring is sleeved outside the second shaft pin, the top end of the first spring is connected to the bottom of the first pressing plate, and the bottom end of the first spring is sleeved on the top of the spline block;

a nut threadedly connected to the second shaft pin lower end.

7. The device of claim 6,

each first clamping strip sequentially comprises a first notch, a first rack, a second notch and a second rack from the top to the bottom;

when the button is pressed downwards, the first rack is meshed with the annular saw teeth in the third mounting hole, and the locking device is in an unlocked state;

when the button is released, the first rack is meshed with the annular saw teeth in the first mounting hole and the third mounting hole, the second rack is meshed with the annular saw teeth in the second mounting hole, and the locking device is in a locking state.

8. The device of claim 7,

the length of the first rack is smaller than the depth of the third mounting hole;

the length of the second rack is less than the maximum compression distance of the first spring;

the length of the second gap is larger than the depth of the third mounting hole.

9. The device of claim 6, wherein the locking device further comprises

The button groove is arranged at the top of the first mounting plate, is positioned above the first mounting hole and is used for placing the first pressing plate;

and the nut groove is arranged at the bottom of the second mounting plate, is positioned below the second mounting hole and is used for placing the nut.

10. The device of claim 9, wherein the locking device further comprises

The angle mark is arranged at the top of the first mounting plate and is positioned around the button groove;

the first clamping part is used for clamping the first handheld part; or,

the second clamping part is used for clamping the second hand-held part;

the positioning mark is arranged at the top of the first handheld part or the second handheld part and is close to one end of the protruding part; the positioning mark points to any angle on the angle mark.

11. The device of claim 5, wherein the locking device further comprises

The semicircular gear is formed at the tail end of the first mounting plate and/or the second mounting plate;

a limiting block which is protruded out of the upper surface of the first handheld part and is close to the protruding part; the limiting block is provided with a U-shaped groove, the opening direction of the U-shaped groove faces towards the semicircular gear, and the bottom of the U-shaped groove is provided with a spring installation groove;

the sliding buckle is arranged in the U-shaped groove; the sliding buckle comprises

The shape of the buckle body corresponds to that of the bottom of the U-shaped groove and is perpendicular to the protruding part;

the buckle shifting knob is arranged above the buckle body and protrudes out of the upper surface of the first handheld part;

the second clamping strip protrudes out of the side wall of the buckle body and faces one side of the semicircular gear; the second clamping strip is perpendicular to the protruding part, and the length of the second clamping strip corresponds to that of the buckle body;

the second spring mounting column is arranged on the side wall of the buckle body and faces one side of the spring mounting groove; the second spring mounting column is parallel to the protruding part, and the second spring mounting column and the spring mounting groove are positioned on the same straight line;

the second spring is sleeved on the second spring mounting column; one end of the second spring is tangent to the buckle obtaining body, and the other end of the second spring is located in the spring mounting groove.

12. The device of claim 11,

when the buckle toggle button is toggled downwards, the second clamping strip is separated from the semicircular gears of the first mounting plate and the second mounting plate; the locking device is in an unlocking state;

when the buckle toggle button is released, the second clamping strip is clamped to the semicircular gears of the first mounting plate and the second mounting plate; the locking device is in a locked state.

13. The device of claim 12,

the height of the second clamping strip protruding out of the clamping buckle body is smaller than the maximum compression distance of the second spring.

14. The device of claim 5, wherein the locking device comprises

The circular gear protrudes out of the upper surface of the first mounting plate; the circular gear is fixed to the first mounting plate or is integrally arranged with the first mounting plate;

the two oppositely arranged mounting bases protrude out of the upper surface of the first handheld part and are close to the protruding part; the two mounting bases are respectively provided with a base pin hole, and the two base pin holes are positioned on the same straight line;

a press buckle arranged between the two mounting bases, the press buckle comprises

One end of the second pressing plate, which is close to the protruding part, is provided with a pressing plate pin shaft hole which is positioned on the same straight line with the two base pin shaft holes; the other end of the spring fixing plate is provided with a third spring mounting column which protrudes out of and is vertical to the lower surface of the second pressing plate;

the clamping portion is arranged at one end, close to the protruding portion, of the second pressing plate, and an included angle of 120-160 degrees is formed between the clamping portion and the second pressing plate; and

the third clamping strip is arranged at the top of the clamping part, protrudes downwards and is opposite to the circular gear;

the third pin shaft simultaneously penetrates through the pin shaft holes of the pressing plate and the two base pin shaft holes; and

the third spring is sleeved outside the third spring mounting column, one end of the third spring is tangent to the lower surface of the pressing buckle body, and the other end of the third spring is tangent to the upper surface of the first handheld portion.

15. The device of claim 14,

when the second pressing plate is pressed downwards, the third clamping strip is separated from the circular gear, and the locking device is in an unlocked state;

when the second pressing plate is released, the third clamping bar is clamped to the circular gear, and the locking device is in a locking state.

16. The device of claim 1,

the locking device comprises

The first sliding pin shaft is arranged at the joint of the upper part of the first handheld part and the bottom end of the first clamping part;

the first fixed pin shaft is arranged at the joint of the top end of the first handheld part and the top end of the second handheld part;

the second fixed pin shaft is arranged at the joint of the upper part of the second handheld part and the bottom end of the second clamping part;

wherein the first sliding pin is slidably mounted to the first clamping portion.

17. The device of claim 2,

the locking device comprises

the second sliding pin shaft is arranged at the joint of the upper part of the second handheld part and the bottom end of the second clamping part;

wherein the first sliding pin is slidably mounted to the first clamping portion;

the second sliding pin shaft is slidably mounted to the second clamping portion.

18. The device of claim 16 or 17,

the locking device further comprises

More than two positioning holes which are communicated with each other are arranged at the bottom end of the first clamping part and/or the second clamping part; the first sliding pin shaft and/or the second sliding pin shaft can be slidably mounted in the positioning hole;

and each sliding port is arranged at the communication position between two adjacent positioning holes.

19. The device of claim 16 or 17,

the first sliding pin shaft or the second sliding pin shaft sequentially comprises a third pressing plate, a thin shaft part, a thick shaft part and a pin shaft base which are connected with each other;

the third pressing plate and the pin shaft base protrude out of the first handheld part or the second handheld part;

the diameter of the thin shaft part corresponds to the width of the sliding opening;

the diameter of the thick shaft part corresponds to the diameter of the positioning hole.

20. The device of claim 19,

the locking device further comprises

One end of each linkage plate is connected to the first fixed pin shaft, and the other end of each linkage plate is connected to the pin shaft base of the first sliding pin shaft and/or the second sliding pin shaft.

21. The device of claim 20,

when the third pressing plate is pressed downwards, the thick shaft part is separated from one positioning hole; the locking device is in an unlocking state; the thin shaft part passes through a sliding opening and slides to the next positioning hole;

when the third pressing plate is released, the thick shaft enters the next positioning hole, and the locking device is in a locking state.

22. The expandable hand-held device of any one of claims 16 to 21 further comprising

An elastic support member having an inverted V-shaped cross section; comprises that

A first bracket, one end of which penetrates through and is fixed to the first holding part and the first clamping part;

a second holder having one end penetrating and fixed to the second holding part and the second grip part and the other end connected to the first holder;

and the arc corner is positioned at the joint of the first support and the second support, and the inner side surface of the arc corner is tangent to the outer surface of the first fixed pin shaft.

23. The device of claim 1 or 2,

the first or second hand-held portion comprises a handle; or, the handle comprises a handle and a protective sleeve, wherein the protective sleeve is sleeved outside the handle.

24. The device of claim 1 or 2,

the open-close type hand-held device comprises but is not limited to a clamping tool and a shearing tool;

the gripping tool includes, but is not limited to, pliers;

the cutting tool includes, but is not limited to, scissors.

25. A method for adjusting the angle of a hand-held portion of an open-close type hand-held device according to claim 1, comprising the steps of:

unlocking the first hand-held part;

rotating the first hand-held portion relative to the first clamping portion;

locking the first handle;

the plane of the rotation path of the first handheld part is the same as or parallel to the opening and closing plane.

26. A method for adjusting the angle of a hand-held portion of an open/close type hand-held device according to claim 2, comprising the steps of:

unlocking the first hand-held part;

rotating the first hand-held portion relative to the first clamping portion;

locking the first handle;

unlocking the second hand-held part;

rotating the second gripping portion relative to the second gripping portion;

locking the second hand-held part;

the plane of the rotation path of the second handheld part is the same as or parallel to the opening and closing plane.