The invention relates to the field of manual tools, and in particular to a manual tool having a retractable tool member.
Manual tools generally have a handle for hold and one or more tool members for specific purposes. It is desirable that the tool member, when not in use, can be retracted so as not to cause any inconvenience or injury to people. In the prior art, the tool member is often retracted in the handle in a retractable or foldable manner. To this end, it is generally required to simultaneously design a push button for deploying the tool member from the handle, a latch for locking the tool member in an operating state or a retracting state, and a guide rail, etc., thereby causing a complex structure, a high failure rate and production cost.
Moreover, it is also intended to provide more than one tool members on one manual tool to meet the needs of use in different situations, and further to hope that all these tool members can be retracted.
Therefore, those skilled in the art are devoted to developing a manual tool with a simpler and more reliable structure having a tool member that can be retracted, and such a manual tool whose tool member comprises more than one tool portions.
In view of the above-mentioned drawbacks of the prior art, the technical problem to be solved by the present invention is to provide a manual tool with a simpler and more reliable structure having a tool member that can be retracted, and such a manual tool whose tool member comprises more than one tool portions.
To achieve the foregoing object, the present invention firstly provides a manual tool having a retractable tool member, which further comprises a handle and a linkage member, wherein the handle comprises a first handle portion and a second handle portion, the first handle portion having a first proximal end and a first distal end, the second handle portion having a second proximal end and a second distal end, the first handle portion being rotatable about a first pivot located at the first proximal end, the second handle portion being rotatable about a second pivot located at the second proximal end, and the first pivot and the second pivot being connected through a connector; the linkage member comprises a first linkage member and a second linkage member, the first linkage member having a first tool end and a first handle end, and the second linkage member having a second tool end and a second handle end; a third pivot and a fourth pivot are provided on the tool member, the first linkage member being rotatably connected with the tool member through the third pivot at the first tool end, and the second linkage member being rotatably connected with the tool member through the fourth pivot at the second tool end; a fifth pivot is provided between the first proximal end and the first distal end of the first handle portion, the first linkage member being rotatably connected with the first handle portion through the fifth pivot at the first handle end, and a sixth pivot is provided between the second proximal end and the second distal end of the second handle portion, the second linkage member being rotatably connected with the second handle portion through the sixth pivot at the second handle end; and the tool member is configured to be retractably movable relative to the handle between an operating state and a retracting state under the driving of the handle and the linkage member.
In a preferred implementation mode of the present invention, when the tool member is in the operating state, the tool member is deployed beyond the first proximal end and second proximal end, and when the tool member is in the retracting state, the tool member is retracted to a position between the first proximal end and the second proximal end and between the first distal end and the second distal end.
In another preferred implementation mode of the present invention, the first handle portion and the second handle portion are provided with a linkage mechanism at the first proximal end and the second proximal end. In a further embodiment, the linkage mechanism includes mutually matched circular-arc concave-convex grooves or splines. In another embodiment, the first handle portion comprises a first component and a second component, and the second handle portion comprises a third component and a fourth component, wherein the first component has a first extension portion that can match with the third component, the fourth component has a second extension portion that can match with the second component, the first component and the third component are pivotally connected to the first pivot at the first extension portion, and the second component and the fourth component are pivotally connected to the second pivot at the second extension portion, so as to constitute the linkage mechanism and the connector.
In another preferred implementation mode of the present invention, axes of the third pivot and the fourth pivot are coincident.
In another preferred implementation mode of the present invention, the fifth pivot is located at the first proximal end adjacent to the first handle portion, and the sixth pivot is located at the second proximal end adjacent to the second handle portion.
In another preferred implementation mode of the present invention, the tool member is configured with a critical point when moving between the operating state and the retracting state, and when the tool member is at the critical point, the third pivot, the fourth pivot, the fifth pivot, and the sixth pivot are laterally aligned on the same straight line.
In another preferred implementation mode of the present invention, the tool member is a pliers head, which comprises a first plier body and a second plier body, wherein the third pivot is located at a tail portion of the first plier body, and the fourth pivot is located at a tail portion of the second plier body.
In another preferred implementation mode of the present invention, an abutment portion is provided at the first tool end of the first linkage member and the second tool end of the second linkage member, a groove is provided at the tail portion of the first plier body and the tail portion of the second plier body, and when the pliers head is in the operating state, the abutment portion and the groove abut against each other.
In another preferred implementation mode of the present invention, the manual tool further comprises a third linkage member that is equivalent to the first linkage member and a fourth linkage member that is equivalent to the second linkage member, wherein the first linkage member is integrated with the third linkage member, and the second linkage member is integrated with the fourth linkage member.
The present invention further provides a manual tool having a retractable tool member, which further comprises a handle and a linkage member, wherein the handle comprises a first handle portion and a second handle portion, the first handle portion having a first proximal end and a first distal end, the second handle portion having a second proximal end and a second distal end, the first handle portion being rotatable about a first pivot located at the first proximal end, the second handle portion being rotatable about a second pivot located at the second proximal end, and the first pivot and the second pivot being connected through a connector; the linkage comprises a first linkage member and a second linkage member, the first linkage member having a first tool end and a first handle end, and the second linkage member having a second tool end and a second handle end; the tool member comprises a first tool head and a second tool head opposite to the first tool head, and a third pivot is provided on the tool member, the first linkage member being rotatably connected with the tool member through the third pivot at the first tool end, and the second linkage member being rotatably connected with the tool member through the third pivot at the second tool end; a fourth pivot is provided between the first proximal end and the first distal end of the first handle portion, the first linkage member being rotatably connected with the first handle portion through the fourth pivot at the first handle end, and a fifth pivot is provided between the second proximal end and the second distal end of the second handle portion, the second linkage member being rotatably connected with the second handle portion through the fifth pivot at the second handle end; and the tool member is configured to be retractably movable relative to the handle among a first operating state, a first retracting state, a second operating state, and a second retracting state under the driving of the handle and the linkage member.
In another preferred implementation mode of the present invention, the first handle portion and the second handle portion are provided with a linkage mechanism at the first proximal end and the second proximal end. In a further embodiment, the linkage mechanism includes a mutually matched circular-arc concave-convex grooves or splines. In another embodiment, the first handle portion comprises a first component and a second component, and the second handle portion comprises a third component and a fourth component, wherein the first component has a first extension portion that can match with the third component, the fourth component has a second extension portion that can match with the second component, the first component and the third component are pivotally connected to the first pivot at the first extension portion, and the second component and the fourth component are pivotally connected to the second pivot at the second extension portion, so as to constitute the linkage mechanism and the connector.
In another preferred implementation mode of the present invention, the fifth pivot is located at the first proximal end adjacent to the first handle portion, and the fifth pivot is located at the second proximal end adjacent to the second handle portion.
In another preferred implementation mode of the present invention, the tool member is configured with a critical point when moving among the first operating state, the second operating state, the first retracting state, and the second retracting state, and when the tool member is at the critical point, the first pivot, the second pivot, the third pivot, the fourth pivot, and the fifth pivot are laterally aligned on the same straight line.
In another preferred implementation mode of the present invention, when the tool member is in the first operating state, the first tool head is deployed beyond the first proximal end and the second proximal end; when the tool member is in the first retracting state, the tool member is retracted to a position between the first proximal end and the second proximal end and between the first distal end and the second distal end, and the first tool head faces the first proximal end and the second proximal end; when the tool member is in the second operating state, the second tool head is deployed beyond the first proximal end and the second proximal end; when the tool member is in the second retracting state, the tool member is retracted to a position between the first proximal end and the second proximal end and between the first distal end and the second distal end, and the second tool head faces the first proximal end and the second proximal end.
In another preferred implementation mode of the present invention, the manual tool further comprises a third linkage member that is equivalent to the first linkage member and a fourth linkage member that is equivalent to the second linkage member, wherein the first linkage member is integrated with the third linkage member, and the second linkage is integrated with the fourth linkage member.
In another preferred implementation mode of the present invention, the first tool head and the second tool head are respectively a first pliers head and a second pliers head formed by alternatively hinging a first plier body and a second plier body at the third pivot.
In another preferred implementation mode of the present invention, the first plier body and the second plier body are provided, at the third pivot, with an elastic member that biases jaws of the first pliers head and the second pliers head in an opening direction.
In another preferred implementation mode of the present invention, the fourth pivot is a first pin and the fifth pivot is a second pin, wherein when the tool member is in the first operating state, the first pin and the second pin abut against both sides of the second pliers head, respectively, so that the jaw of the first pliers head opens and closes under the action of the elastic member and the pin; when the tool member is in the second operating state, the first pin and the second pin abut against both sides of the first pliers head, respectively, so that the jaw of the second pliers heads opens and closes under the action of the elastic member and the pin.
In another preferred implementation mode of the present invention, a groove is provided at positions where the first pliers head or the second pliers head abuts against the first pin and the second pin.
In another preferred implementation mode of the present invention, the handle is provided with an arc-shaped groove at the fourth pivot and the fifth pivot, wherein the fourth pivot and the fifth pivot are movable in the arc-shaped groove.
In another preferred implementation mode of the present invention, the first tool head is a first tool bit and the second tool head is a second tool bit.
In another preferred implementation mode of the present invention, the first tool head is a first screwdriver bit and the second tool head is a second screwdriver bit.
The concepts, specific structures, and technical effects of the present invention will be further described below with reference to the accompanying drawings to fully understand the object, features, and effects of the present invention.
The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments.
The present invention firstly provides a manual tool whose tool member can be retracted and deployed.
When the handle portions 1, 2 open or close, the pliers head 5 retractably moves relative to the handle under the driving of the linkage members 3, 4, so as to be configured in the operating state or the retracting state. When in the operating state, the pliers head 5 is deployed beyond the proximal ends 11, 21 of the handle; when in the retracting state, the pliers head 5 is retracted back into the handle, locating between the proximal ends 11, 21 and the distal ends 21, 22 of the handle.
The retractable pliers is also provided with a linkage mechanism at the proximal ends 11, 21 of the handle. In this embodiment, the linkage mechanism includes mutually matched splines 112, 212 as shown in
As shown in
The handle portions 1, 2, the linkage members 3, 4 and the pliers head 5 substantially constitute a planar link system so that the pliers head 5 can retractably move, through the linkage members 3, 4, with the opening and closing movements of the handle portions 1, 2. The link system has a critical point as shown in
In the present embodiment, the linkage members 3, 4 are located on one side of the pliers head 5. In another embodiment, the linkage members 3, 4 are located on both sides of the pliers head 5, respectively. In another embodiment, the linkage members 3A, 4A are located on one side of the pliers head 5, and the other side is provided with linkage members 3B, 4B that are equivalent to the linkage members 3A, 4A, respectively, as shown in
In addition, in the present embodiment, the pivots 311 and 411 can also be coincident, i.e., they are actually the same pivot.
The present invention further provides such a manual tool that comprises more than one tool portions. See the embodiments shown in
In this embodiment, in order to allow the tool member 5 to move relative to the handle among these four states, the handle portions 1, 2, the linkage members 3, 4 and the pliers head 5 substantially constitute a planar link system, and the system has a critical point as shown in
As shown in
As shown in
As shown in
As shown in
The handle portion can also be configured with other functional parts, just as a common multi-function pliers. Moreover, the functional parts can be used when the head is retracted in the handle, which is simple, quick, convenient and safe in operation.
The specific preferred embodiments of the present invention have been described in detail above. It should be understood that those ordinarily skilled in the art could make various modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained through logic analysis, reasoning, or limited experimentations in combination with the prior art by a person skilled in the art according to the concept of the present invention should fall within the protective scope defined by the claims.
Filing Document | Filing Date | Country | Kind |
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PCT/CN2018/082341 | 4/9/2018 | WO | 00 |