WO2012151745A1

WO2012151745A1 - Forest hand tool

Info

Publication number: WO2012151745A1
Application number: PCT/CN2011/073912
Authority: WO
Inventors: 王�华
Original assignee: Wang Hua
Priority date: 2011-05-11
Filing date: 2011-05-11
Publication date: 2012-11-15

Abstract

A forest hand tool includes a tool bit (200) and a tool handle (100). A fitting seat (101) is provided on one end of the tool handle and is fitted with the mounting part of the tool bit. The tool bit is provided with a tongue (205), which can be inserted into a groove (105) in the fitting seat of the tool handle and can be fitted with it. The tool bit and tool handle can be locked detachably via a lateral fixing device (300). The tool handle is preferably made of engineering plastics which is recoverable and recycled, shaped by blow-moulding technology, and injected into a hollow straight handle or a hollow bend handle, thereby reducing the weight of the tool handle and saving the plastic resource. The forest hand tool is convenient to operate, and the risk caused by tool-bit-dropping or handle-fracture of traditional tools can be avoided.

Description

Forest hand tools

Technical field

The invention relates to a hand tool, in particular to a forest hand tool. Background technique

At present, the traditional hand tools have the following problems: First, the tool handle adopts a wooden handle, which causes the forest cover area to decrease, the ecological environment continues to be destroyed, and has certain influence on soil erosion, drought, flood and climate; the tool handle adopts a fiberglass handle. Glass fiber is a disposable plastic product, which is non-recyclable and non-recyclable. The underground decomposition time is several decades, causing serious environmental pollution. Second, the traditional hand tool is basically a tool holder and a tool head fixed together, which is inconvenient to disassemble. The use range is narrow; Third, the assembly structure of the traditional hand tools is flawed, and the tool head falling off and the broken handle phenomenon may occur during use, which brings potential safety hazards. Summary of the invention

It is an object of the present invention to provide a forest hand tool. The tool head and the tool handle of the forest hand tool are detachably fixedly coupled together, and the assembly structure thereof can avoid the tool head falling off and the broken handle phenomenon occurring in the use of the tool, thereby eliminating the safety hazard.

In a specific embodiment of the present invention, the forest hand tool comprises a tool head and a tool handle, the tool handle has a mounting seat at one end, a mounting groove is provided on the mounting seat, a birch groove is assembled, and the tool head The fitting part is matched; the tool head is provided with a birch head, and the insertion tool holder assembly is matched with the birch groove of the tool head birch; the tool head and The tool shank is detachably locked by a lateral fastening device.

In a preferred embodiment of the present invention, the forest hand tool further includes a stop button, and the stop button includes at least one pair of bumps and at least one pair of symmetric keys. When installed, the projections cooperate with recesses on the tool shank mount, and the symmetrical keys cooperate with keyways respectively located on the tool head and the tool shank mount, and the stop keys are inserted.

In still another preferred embodiment of the present invention, the forest hand tool further includes a positioning pin, and the positioning hole of the tool head and the tool holder respectively engages with the positioning pin. The lower portion of the locating pin is threaded and mates with the thread provided by the tool head mounting slot.

The forest hand tool of the present invention can also have the above-mentioned stop button, positioning pin and the structure respectively matched thereto.

The tool shank of the present invention is preferably made of a recyclable, recyclable engineering plastic and is produced by a gas blow molding process.

The tool shank of the present invention can be formed as a hollow straight shank or a hollow curved shank.

The tool handle of the forest hand tool of the present invention can meet the needs of changing a variety of tool heads. The fitting portion of the tool head to be mounted is shaped and sized to match the shape and size of the corresponding mounting portion of the tool shank mount to ensure a secure fit when the tool head is in place. The tool head can be selected from a variety of hand tools such as scorpions, axes, boring tools, shovel, and hoes.

The invention has the following advantages: 1. The traditional assembly method is changed, the tool head is inserted into the tool shank assembly, and the lateral fastening device is used, and is preferably detachably fixed to the tool shank by a stop button, a top positioning pin or the like, so that The tool head does not fall off, is easy to disassemble, safe and reliable.

2. The invention preferably has a hollow plastic handle with damping effect, which is operated when the tool is used. Comfortable, effortless and effortless.

DRAWINGS

1 is a schematic exploded view showing the assembly of a forest hand tool according to the present invention;

Figure 2 is an enlarged view of the assembly part of the forest hand tool head and tool handle of Figure 1.

Stereo view (where the tool handle is a cross-sectional view);

3 is a schematic exploded view showing another assembly of a forest hand tool according to the present invention;

Figure 4 is an enlarged view of the assembly part of the forest hand tool head and tool handle of Figure 3.

Stereo view (where the tool handle is a cross-sectional view);

Figure 5 is a cross-sectional view of the assembled new forest hand tool of Figure 3;

6 is a schematic exploded view showing another assembly of a forest hand tool according to the present invention;

Figure 7 is an enlarged view of the assembly part of the forest hand tool head and tool handle of Figure 6.

Stereo view (where the tool handle is a cross-sectional view);

Figure 8 is a cross-sectional view of the assembled forest hand tool of Figure 6;

Figure 9 is a perspective partial cross-sectional view of another assembled forest hand tool of the present invention; Figure 10 is a perspective partial cross-sectional view of the tool handle of the forest hand tool of the present invention;

Figure 11 is a schematic illustration of some of the tool heads that may be employed in the present invention.

detailed description

The invention will be further described below in conjunction with the accompanying drawings. It is to be understood that the particular embodiments of the invention described herein are not to be construed The scope of the invention is defined by the appended claims. 1 is a schematic exploded view showing the assembly of a forest hand tool according to the present invention. As shown in Figure 1, The tool includes: a tool handle 100, a tool head 200, and a lateral fastening bolt 300. The front end of the tool handle 100 is provided with a mounting seat 101. The mounting base 101 is provided with a bolt hole 102, a mounting groove 104 (shown in FIG. 2), and a birch groove 105 (shown in FIG. 2). The tool head 200 is provided with a tool handle. 100 matched bolt holes 202, mounting slots 204, and assembled birch 205.

During installation, the assembled birch 205 of the tool head 200 is inserted into the assembled birch 105 of the tool shank 100, while the other portions of the tool head 200 are mated with the mounting slots 104 of the mounting base 101. When it is installed, the bolt holes 202 on the tool head 200 and the bolt holes 102 on the mounting base 101 are aligned and locked by the fastening bolts 300.

The assembled birch groove 105 may have a circular, elliptical or polygonal cross section, preferably a polygonal shape. This design allows the assembly of the birch 205 to not only enhance the stability of the tool head 200 in the mounting groove 104, but also enhance the bending strength of the tool. Accordingly, the assembled birch head 205 is designed to match the shape of the assembled birch groove 105.

The mounting groove 104 of the mounting base 101 is for accommodating the fitting portion of the tool head 200, and therefore both should be designed in a matching shape. Accordingly, the mounting groove 204 of the tool head 200 is for accommodating the mounting portion of the mounting base 101, so the two should also be designed in a matching shape.

The tool shank 100 is formed into a hollow shape by an air blow molding process using an engineering plastic, as shown in FIG. This design allows the tool handle to be recycled and recyclable, yet lightweight and safe to use.

The other end of the tool shank 100 may also be provided with a hanging hole 108.

Fig. 3 is a schematic exploded view showing the assembly of a forest hand tool according to another embodiment of the present invention. The forest hand tool of Figure 3 differs from the forest hand tool shown in Figures 1 and 2 in that it has a stop button 500 in addition to the structure of Figures 1 and 2. Stop button 500 with a pair The keys 507 are respectively engaged with the symmetric key grooves 207 on both sides of the tool head 200 and the symmetric key grooves 107 (shown in FIG. 4) on both sides of the tool holder mount 101. Preferably, the stop button 500 also has at least one tab 506 that mates with a recess 106 on the tool shank mount 101, which is preferably symmetrically distributed in pairs.

When installed, the tool head 200 is inserted into the tool shank mount 101. When it is installed, the bolt holes 202 on the tool head 200, the bolt holes 102 on the mount 101 are aligned, and are fastened by the fastening bolts 300. The stop key 500 is inserted into the symmetrical keyway along the symmetry key 507 until the stop key 500 enters the tool shank 100 mount 101, and the bump 506 mates with the recess 106.

Figure 5 shows a cross-sectional view of the assembled forest hand tool of Figure 3.

The symmetry key 507 can be designed as a square, a circle, or other polygon as desired. The symmetry key 507 can also be inserted into the mount from different directions as required. After the assembly is completed, the stop button 500 with the symmetrical key 507 not only enhances the drawing strength of the tool, but also the end face can be designed with a pleasing pattern to beautify the tool.

Figures 6 and 7 show the construction of yet another forest hand tool of the present invention. Unlike the forest hand tools shown in Figures 1 and 2, the forest hand tools shown in Figures 6 and 7 also have a top locating pin 400. The top positioning pins 400 are respectively engaged with the top positioning holes 203 of the tool head 200 and the mounting hole positioning holes 103. One end of the top locating pin 400 is preferably threaded 401 and is mated with a thread 20301 located on the tool head mounting slot 204, as shown in FIG.

The top locating pin 400 serves not only as a mounting component for the tool head and tool shank, but also to enhance the pull strength of the tool shank so that the tool shank must not move axially.

The locking bolt 300, the top positioning pin 400, and the stop key 500 may be one or more types according to the size and strength requirements of the tool head to meet the tool use requirements. Figure 9 is a perspective partial cross-sectional view showing still another assembled forest hand tool of the present invention. As can be seen from Fig. 9, the assembled forest hand tool not only uses the locking bolt 300 but also the top positioning pin 400 and the stop key 500. With the components, the tool shank 100, the tool head 200, and the stop key 500 are assembled to each other, and are locked by the lateral locking bolts 300 and the top positioning pins 400. The key in the invention cooperates with the keyway, the positioning hole cooperates with the positioning pin, and the locking bolt cooperates with the bolt hole. The above structure significantly increases the drawing strength of the tool, so that the tool head must not move axially along the tool shank. The structure of the invention makes the tool head and the tool handle not loose when striking, ensuring that the tool head does not fall off during use, and is safe and reliable.

The lateral locking bolts 300 and the top positioning pins 400 may be one or more suitable according to the size and strength requirements of the tool head.

The mounting groove 104 on the mounting base 101 can be designed as a square, a circular or other polygonal shape as required, and cooperates with the assembled tool head 200 mounting groove 204. It is also possible to increase or decrease the number of mounting slots according to the assembly requirements.

Figure 11 is a schematic illustration of some of the tool heads that may be employed in the present invention. As shown in the figure, the replaceable tool heads include hand tools such as scorpions, axes, trowels, shovel, shovel, etc., but are not limited thereto.

Since the tool head and the tool shank of the forest hand tool of the present invention are designed to be compatible with each other and are easy to install, the assembly time can be shortened and the production efficiency can be improved. At the same time, the tool head does not fall off during use, which is safe and reliable.

Based on the description of the preferred embodiments of the present invention, it is to be understood that the invention is not limited by the details of the invention described herein. The obvious change is the same It is possible to achieve the object of the present invention.

Claims

Rights request

A forest hand tool comprising a tool shank and a tool head, the tool shank having a mounting seat at one end, a mounting groove on the mounting seat, and a birch groove for fitting with the fitting portion of the tool head; The tool head is provided with a birch head, and the insertion tool holder assembly is engaged in a birch groove matching the tool head birch; the tool head and the tool shank are detachably locked and fixed by the lateral fastening device.

2. The forest hand tool according to claim 1, wherein the mounting groove on the tool shank mount is square, circular or other polygonal shape.

3. The forest hand tool according to claim 1, wherein the assembled birch head on the tool head has a circular, elliptical or polygonal cross section.

4. The forest hand tool according to claim 1, further comprising a stop button, the stop button comprising at least one pair of bumps and at least one pair of symmetrical keys, the bumps being located at the tool shank mount The upper grooves cooperate to match the keyways respectively located on the tool head and the tool shank mount.

5. A forest hand tool according to claim 4, wherein said symmetrical keys are square, circular or other polygonal.

6. The forest hand tool according to claim 1, further comprising a positioning pin, respectively, a positioning hole that cooperates with the positioning pin on the mounting head of the tool head and the tool handle; The lower part is threaded and mates with the threads on the tool head mounting groove.

7. The forest hand tool of claim 4, further comprising a locating pin, A positioning hole is formed on the mounting head of the tool head and the tool shank respectively; the lower part of the positioning pin is threaded and cooperates with the thread on the tool head mounting groove.

A forest hand tool according to any of the preceding claims, wherein the tool shank is a hollow straight shank or a hollow curved shank.

9. The forest hand tool according to claim 8, wherein the tool handle is a hollow curved handle and is made of an engineering plastic using a gas blow molding process.

10. A forest hand tool according to any of the preceding claims, wherein the tool head is selected from the group consisting of a variety of mites, axes, trowels, shovel, mites.