CN110774237A - Combined tool of bolt and wrench - Google Patents

Abstract

The invention discloses a combination tool of a bolt and a wrench, comprising a bolt with a pyramid-shaped bolt head, a first wrench used in combination with the bolt, the first wrench having a receiving space adapted to the pyramid-shaped bolt head, and the first wrench. When the accommodating space of the wrench is sleeved on the bolt head, it can be used for the installation and removal of the bolt. The size of the bolt head of the present invention does not affect the connection with the first wrench, as long as the truncated shape of the bolt head matches the truncated shape of the accommodating space of the first wrench, and the size of the upper bottom surface of the accommodating space is not larger than the upper surface of the bolt head The size of the bottom surface and the size of the lower bottom surface of the receiving space are not less than the size of the upper bottom surface of the bolt head; the slightly smaller bolt head is stuck inside the bottom end of the wrench, and the slightly larger bolt head is stuck outside the bottom of the wrench, as long as the following conditions are met: The size relationship can ensure that the first wrench can match the bolt head of any size, and realize the universal function of the wrench.

Description

A combination tool of bolt and wrench

technical field

The invention belongs to the field of maintenance tools, in particular to a combined tool of a universal bolt and a wrench.

Background technique

At present, the common wrenches on the market are uneven and various, but they are inconvenient to use and inefficient. If you want to tighten different types of bolts, you must use multiple wrenches of different specifications, which is extremely inconvenient. For this reason, although some people have designed related universal wrenches, such as a universal wrench published in China Patent No. CN208663618U, see Figure 10, which can be tightened through a chain, which is troublesome to operate and easy to loosen, but the scope of application is small and the volume is large. It is not easy to carry, and it is easy to damage the corners of the bolt, which cannot fundamentally solve the problem. For example, a concavely deformed bolt and nut published in China Patent No. CN 2903536Y can only protect the edges and corners of the bolt, but cannot realize the universality between the wrench and the bolt.

SUMMARY OF THE INVENTION

The present invention provides a combined tool of a bolt and a wrench, which can solve the above-mentioned defects in the prior art.

The technical scheme of the present invention is as follows:

A bolt and wrench combination tool, comprising,

a bolt comprising a pyramid-shaped bolt head;

The first wrench, used in combination with the bolt, includes a wrench body, one end of the wrench body is provided with an accommodation space for accommodating the bolt head, and the shape of the accommodation space matches the shape of the prism of the bolt head ;

Wherein, the size of the upper bottom surface of the accommodating space is not larger than the size of the upper bottom surface of the bolt head, and the size of the lower bottom surface of the accommodating space is not smaller than the size of the upper bottom surface of the bolt head. When the accommodating space of the first wrench is sleeved on the bolt head, it can be used for installation and removal of the bolt.

The prism includes an upper bottom surface, a lower bottom surface and a side surface. The accommodating space of the first wrench is a hollowed-out prism, wherein the matching refers to that when the bolt head is a quadrangular prism, the accommodating space is also a quadrangular prism; and the rib of the bolt head is a quadrangular prism. The included angle between each side surface and the lower bottom surface of the table is equal to the included angle between the corresponding side surface and the lower bottom surface of the receiving space.

In the combination tool of the bolt and the wrench disclosed in the invention, the hollowed-out prism at the bottom end of the first wrench just fits closely with the head of the bolt. The size of the bolt head does not affect the cooperation with the first wrench. As long as the angle between each side of the bolt head and the lower bottom is equal to the angle between the corresponding side and the lower bottom of the receiving space, the The accommodation space of the first wrench is closely matched. For a slightly smaller bolt, its bolt head is stuck on the hollowed-out prism of the first wrench near the upper bottom surface, and for a slightly larger bolt, its bolt head is stuck on the hollowed-out prism of the first wrench near the lower bottom surface.

Moreover, since the shape of the hollowed-out ledge of the first wrench matches the shape of the bolt head, compared with the prior art, there will be no loosening during use.

Preferably, the bolt head is one of four-sided, five-sided, six-sided, eight-sided or ten-sided. The larger the number of sides of the prism, the more round it tends to be, and it is easy to slip during use. Therefore, preferably, the bolt head is set as a hexagonal prism, and the shape of the accommodation space of the first wrench is the same as that of the bolt head. shape match.

Preferably, the pyramid shape is set as a regular pyramid shape, and the angle between each side of the regular pyramid and the lower bottom surface is equal. When in use, the bolt head is evenly stressed, more durable, and avoids damage to the bolt head. damage. The included angle between the side surface and the bottom surface of the prism is set to 50-80 degrees.

Preferably, the included angle between the side surface and the bottom surface of the prism is set to 60 degrees.

Further preferably, it also includes a second wrench, the top of the bolt head includes a tightening groove, and the head of the second wrench is adapted to the tightening groove. When the size of the bolt head is small, it is sleeved in the receiving space, so the first wrench cannot fully tighten the bolt; or when the size of the bolt head is large, the contact area between the receiving space of the first wrench and the bolt head is small, and the bolt cannot be fully tightened by the first wrench. Tighten the bolts completely. In this case, after tightening the bolts to a certain extent, use a second wrench. The head of the second wrench is fitted with the fastening groove on the top of the bolt head, and the bolts are further tightened by the second wrench. solid.

Preferably, the second wrench is an Allen wrench, and the fastening groove is adapted to the head of the second wrench.

Further preferably, the first wrench further includes an accommodating groove adapted to the hand bit, which is provided at the top end of the wrench body away from the accommodating space. The hand drill is an electric hand drill. The electric hand drill is used to drive the first wrench to fasten the bolts, which saves manpower and is more convenient.

Further preferably, the first wrench further includes a wrench handle, which is arranged in the circumferential direction of the wrench body, and the bolt is tightened by rotating the handle; the wrench handle includes a screwdriver, which enriches the functions of the wrench and is more practical.

Further preferably, the screwdriver includes one or more of a Phillips screwdriver and a flat-blade screwdriver, and the number of the screwdrivers is set to 2-8, which are evenly arranged in the circumferential direction of the wrench body.

Further preferably, the screwdriver is fixedly or detachably connected to the wrench body. The wrench body is provided with an interface, and the interface between the screwdriver and the wrench body is detachably connected, which can replace different screwdrivers and choose different types of screwdrivers; it supports replacement and is easy to use.

Compared with the prior art, the beneficial effects of the present invention are as follows:

First, in the combination tool of the bolt and the wrench of the present invention, the size of the bolt head does not affect the connection with the first wrench. As long as the truncated shape of the bolt head matches the truncated shape of the accommodating space of the first wrench, it can be combined with the first wrench. A wrench is tightly connected without gaps and is very reliable; and the size of the upper bottom surface of the receiving space is not larger than the size of the upper bottom surface of the bolt head, and the size of the lower bottom surface of the receiving space is not smaller than the size of the upper bottom surface of the bolt head; slightly The smaller bolt head is clamped inside the bottom end of the wrench, and the larger bolt head is clamped outside the bottom of the wrench. As long as this dimensional relationship is satisfied, the first wrench can be guaranteed to match any size of bolt head, realizing the universality of the wrench. effect.

Second, in the combination tool of the bolt and the wrench of the present invention, the prismatic bolt head cooperates with the hollowed prism of the first wrench, which ensures the fit degree during use; compared with the prismatic bolt head of the existing bolt , Under the condition of the same height of the bolt head, the side area of the prismatic bolt head is larger than that of the prismatic bolt head, and the force area is nearly doubled, which greatly reduces the angle of the bolt head. Wear; and due to the pyramid-shaped bolt head, the first wrench and the bolt head are in close contact with the bolt head through the side surface, and there will be no loosening during use.

Third, the top of the first wrench of the present invention has an accommodating groove matched with the hand drill bit, which can be combined with the hand drill to realize automatic installation and removal of bolts; the first wrench is provided with a plurality of screwdrivers, which is convenient to use; the first wrench tightens the bolts After reaching a certain level, a second wrench is used, the head of the second wrench is adapted to the fastening groove on the top of the bolt head, and the bolt is further tightened by the second wrench to achieve a better tightening effect.

Fourth, the combination tool of the bolt and the wrench of the present invention can not only realize the manual installation and removal of the bolt, but also realize the automatic installation and removal of the bolt through a hand drill, which brings great convenience to the project and greatly improves the work efficiency. .

Of course, it is not necessary for any product embodying the present invention to achieve all of the above-described advantages simultaneously.

Description of drawings

Fig. 1 is the structural representation of the first wrench of Embodiment 1 of the present invention;

Fig. 2 is the three-dimensional structure schematic diagram of the bolt of Embodiment 1 of the present invention;

Fig. 3 is the bottom view of the first wrench of Embodiment 1 of the present invention;

4 is a side view of the first wrench of Embodiment 1 of the present invention;

Fig. 5 is the top view of the bolt of Embodiment 1 of the present invention;

Fig. 6 is the side view of the bolt of Embodiment 1 of the present invention;

7 is a schematic structural diagram of a second wrench according to Embodiment 1 of the present invention;

8 is a side view of the second wrench of Embodiment 1 of the present invention;

9 is a bottom view of the second wrench of Embodiment 1 of the present invention;

Fig. 10 is a universal wrench and bolt structural schematic diagram in the background technology;

FIG. 11 is a schematic diagram of a hand drill matched with the first wrench according to the embodiment of the present invention.

Reference numerals: bolt 20, bolt head 21, fastening groove 22, bolt body 23, first wrench 10, wrench body 11, receiving space 12, receiving groove 13, wrench handle 14, upper bottom surface 121 of the receiving space, bolt The upper bottom surface 211 of the head, the lower bottom surface 122 of the receiving space, the second wrench 30 , the second wrench body 31 , the wrench head 32 , the operating handle 33 , the hand drill 41 , and the hand drill 40 .

Detailed ways

The existing polygonal bolt and nut combination has been frequently used, as shown in Figure 10, the force area of the nut and the wrench is small, the force is uneven, and the polygonal edges and corners of the nut are easily worn, which increases the difficulty of disassembly.

The invention provides a combination tool of bolt and wrench. The bolt head is matched with the first wrench, and the truncated bolt head is matched with the hollow trough of the first wrench, so as to ensure the fit during use. Compared with the prismatic bolt head of the existing bolt, under the condition of the same height of the bolt head, the side area of the prismatic bolt head is larger than that of the prismatic bolt head, which is nearly doubled. The force area greatly reduces the wear of edges and corners. In addition, compared with similar products, it will make the operation smoother; it overcomes the shortcomings of the wrench's groove height is too small, the force is difficult to control, and the wrench is easy to slip.

The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention, but not to limit the protection scope of the present invention. Improvements and adjustments made by those skilled in the art according to the present invention in practical applications still belong to the protection scope of the present invention.

Example 1

This embodiment provides a combination tool of a bolt and a wrench, including a bolt 20, the bolt 20 includes a pyramid-shaped bolt head 21 and a bolt body 23; the first wrench 10, used in combination with the bolt 20, includes a wrench The body 11, one end of the wrench body 11 is provided with an accommodation space 12 for accommodating the bolt head 21, and the shape of the accommodation space 12 matches the shape of the prism of the bolt head 21; wherein, the accommodation space The size of the upper bottom surface 121 of the bolt head is not larger than the size of the upper bottom surface 211 of the bolt head, and the size of the lower bottom surface 122 of the receiving space is not smaller than the size of the upper bottom surface 211 of the bolt head. When the accommodating space 12 of the first wrench is sleeved on the bolt head 21 , it can be used for tightening or loosening the bolt 20 .

"Pyramid is a type of polyhedron studied in geometry, which refers to the geometric shape between the section and the base after a pyramid is truncated by a plane parallel to its base. The section is also called the upper base of the pyramid. The original pyramid The bottom surface is called the lower bottom surface, and the remaining surfaces are called the lateral surfaces.”

1 is a schematic three-dimensional structure diagram of the first wrench 10 of the present embodiment, FIG. 2 is a three-dimensional structure schematic diagram of a bolt, FIG. 3 is a bottom view of the first wrench 10, and FIG. 6 is a side view of the bolt.

In this embodiment, the accommodating space 12 of the first wrench 10 is a hollowed-out prism, wherein, matching means that when the bolt head 21 is a quadrangular prism, the accommodating space 12 is also a quadrangular prism; And the angle between each side surface and the lower bottom surface of the prism of the bolt head 21 is equal to the included angle between the corresponding side surface and the lower bottom surface of the receiving space 12 .

In the combination tool of the bolt and the wrench in this embodiment, the hollowed-out prism at the bottom end of the first wrench 10 just fits tightly with the bolt head 21 . The size of the bolt head 21 does not affect the cooperation with the first wrench 10, as long as the angle between each side surface of the bolt head 21 and the lower bottom surface is equal to the angle between the corresponding side surface and the lower bottom surface of the receiving space 12 , it can be closely matched with the receiving space 12 of the first wrench 10 . The slightly smaller bolt 20 has its bolt head 21 stuck on the hollowed-out ridge of the first wrench 10 near the upper bottom surface, and the slightly larger bolt 20 has its bolt head 21 stuck on the hollowed-out ridge of the first wrench 10 close to the upper bottom surface. at the bottom. Moreover, since the shape of the hollowed edge of the first wrench 10 matches the shape of the bolt head 21 , there is no loosening during use compared with the prior art.

Preferably, the bolt head 21 is one of a quadrangular pyramid, a pentagonal pyramid, a hexagonal pyramid, an octagonal pyramid or a ten-sided pyramid. The more the number of sides of the prism, the more round it tends to be, and it is easy to slip during use. Therefore, preferably, the bolt head 21 is set as a hexagonal prism, and the shape of the accommodating space 12 of the first wrench 10 is the same as the The shape of the bolt head 21 is matched.

Preferably, the pyramid shape is set as a regular pyramid shape, and the angle between each side of the regular pyramid and the lower bottom surface is equal. When in use, the bolt head 21 is uniformly stressed and more durable, avoiding damage to the bolt head. 21 damage. The included angle between the side surface and the bottom surface of the prism is set to 50-80 degrees.

Preferably, the included angle between the side surface and the bottom surface of the prism is set to 60 degrees. Preferably, the material of the first wrench 10 is spring steel, which has good toughness. The surface of the first wrench 10 is plated with niobium-tantalum alloy, which has strong corrosion resistance, prevents the intrusion of dust, and prevents rust, aging and deterioration.

Further preferably, it also includes a second wrench 30, see FIGS. 5 and 7-9, the second wrench 30 includes a second wrench body 31, a wrench head 32, and an operating handle 33, and the top of the bolt head 21 includes a tightening The slot 22, the wrench head 32 of the second wrench is adapted to the fastening slot 22. When the size of the bolt head 21 is small, it is sleeved in the accommodating space 12, so the first wrench 10 cannot completely tighten the bolt 20; or when the size of the bolt head 21 is large, the accommodating space 12 of the first wrench 10 and the bolt head 21 In this case, after the first wrench 10 has tightened the bolt 20 to a certain extent, the second wrench 30 is replaced, and the head of the second wrench 30 is connected to the bolt head 21 The tightening groove 22 on the top is adapted, and the bolt 20 is further tightened by the second wrench 30 .

Preferably, the second wrench 30 is an Allen wrench, and the fastening groove 22 is a hexagonal groove adapted to the head of the second wrench 30 , as shown in FIG. 2 . The tightening groove 22 can also be set as a groove adapted to the screwdriver head, and the bolt 20 is further tightened by a screwdriver, and the shape of the tightening groove 22 is not limited to this.

Further preferably, the first wrench 10 further includes an accommodating groove 13 adapted to the hand bit 41 , as shown in FIG. In this embodiment, the hand drill refers to the existing electric hand drill 40. As shown in FIG. 11, the electric hand drill 40 is used to drive the first wrench 10 to fasten the bolts 20, which saves manual operation and is more convenient. The shape of the accommodating groove 13 is not used to limit the protection scope of the present invention, it only needs to ensure that it fits with the shape of the hand drill 41 , which can be set according to the needs of customers, which will be repeated here.

Further preferably, the first wrench 10 further includes a wrench handle 14, as shown in FIG. 3 and FIG. 4, which is arranged in the circumferential direction of the wrench body 11, and the bolt 20 is tightened by rotating the handle; the wrench handle 14 includes a screwdriver, and the screwdriver includes one or more of a Phillips screwdriver and a flat-blade screwdriver, which enriches the functions of the wrench and is more practical.

Further preferably, the number of the screwdrivers is set to 2-8, which are evenly arranged in the circumferential direction of the wrench body 11, and the number of the wrench handles 14 can be set according to actual needs.

Further preferably, the screwdriver is fixedly or detachably connected to the wrench body 11 , wherein the fixed connection can be welding, and the detachable connection can be snap-connected.

In the combination tool of bolt and wrench of this embodiment, when in use, the accommodation space 12 of the first wrench 10 is sleeved on the bolt head 21 , and the first wrench 10 is driven by rotating the handle or through a hand drill, so as to realize the tightening of the bolt 20 effect. When the first wrench 10 tightens the bolt 20 to a certain extent, the second wrench 30 is used to further tighten the bolt 20 . Through the cooperation of the first wrench 10 and the second wrench 30 , the bolt 20 is tightened to a predetermined degree.

The combination tool of the bolt and the wrench of the present invention has a simple structure design. In addition, the design does not produce other harmful chemicals, realizing the concept of low carbon and environmental protection. Compared with other universal wrenches on the market, it fundamentally solves the problem that ordinary universal wrenches will damage the bolts and slip. In a true sense, it can adapt to all types of bolts and there will be no gap between the wrench and the bolt, and will not be loose. Damaged bolts.

The universal bolt wrench combination disclosed by the invention can be suitable for multiple types of bolts, and fundamentally solves the problem that a common wrench needs to use multiple wrenches, and the common universal wrench will damage the bolt and slip. In addition, the present invention adopts spring steel material, which has high toughness and long service life.

The above disclosures are merely preferred embodiments of the present invention. The preferred embodiments do not exhaust all the details, nor do they limit the invention to only the described embodiments. Obviously, many modifications and variations are possible in light of the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention. The present invention is to be limited only by the claims and their full scope and equivalents.

Claims (10)

1. A bolt and wrench combination tool is characterized by comprising,

a bolt including a frustum-shaped bolt head;

the first wrench is combined with the bolt and comprises a wrench body, wherein one end of the wrench body is provided with an accommodating space for accommodating the bolt head, and the shape of the accommodating space is matched with that of the bolt head; wherein,

the size of the upper bottom surface of the accommodating space is not larger than that of the upper bottom surface of the bolt head, and the size of the lower bottom surface of the accommodating space is not smaller than that of the upper bottom surface of the bolt head.

2. The tool of claim 1, wherein the bolt head and the receiving space are one of a quadrangular frustum pyramid, a pentagonal frustum pyramid, a hexagonal frustum pyramid, an octagonal frustum pyramid, or a decagonal frustum pyramid.

3. The tool of claim 1, wherein the angle between each side surface of the bolt head and the lower bottom surface thereof is set to 50-80 degrees.

4. The tool of claim 1, wherein the angle between each side surface of the bolt head and the lower bottom surface thereof is set to 60 degrees.

5. The tool of claim 1, further comprising a second wrench, wherein the top of the bolt head includes a fastening slot, and the head of the second wrench fits into the fastening slot.

6. The tool of claim 1, wherein the second wrench is a socket head wrench.

7. The tool set forth in claim 1, wherein said first wrench further comprises a receiving slot adapted to said bit, said receiving slot being disposed at a top end of said wrench body remote from said receiving space.

8. The tool of claim 1, wherein the first wrench further comprises a wrench handle disposed circumferentially around the wrench body, the wrench handle comprising a screwdriver.

9. The tool of claim 8, wherein the number of the screw drivers is 2-8, and the screw drivers include one or more of a cross screw driver and a straight screw driver.

10. The tool set forth in claim 8 or 9, wherein said screwdriver is fixedly or detachably connected to said wrench body.

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