CN105538206B - It is a kind of for outer-hexagonal bolt, the combination wrench of nut - Google Patents

Abstract

The invention discloses a combination wrench for external hexagonal bolts and nuts, which comprises a handle, one end of the handle is a ring, the two sides of the ring of the handle are planes, and the two sides of the ring of the handle are respectively fixed with screws. The pressure ring and the upper pressure ring, the lower pressure ring and the upper pressure ring seal the toothed sleeve in the ring of the handle. A hexagonal cylinder group is arranged in the toothed sleeve, and a paddle is installed on the toothed sleeve through a pin shaft. Pressing the hexagonal cylinder group, a shift fork is installed on the handle close to the ring shape. The invention is a combination wrench for external hexagonal bolts and nuts, which adopts the combination of multiple hexagonal cylinders to realize the disassembly and assembly of external hexagonal bolts or nuts of various specifications with one wrench. While having the advantages of fixing the wrench, it greatly The number, volume and weight of the wrenches are reduced, and the operation is fast and convenient, and the space occupied by storage is small, so it is easy to carry.

Description

Combination wrench for external hexagonal bolts and nuts

technical field

The invention belongs to the technical field of mechanical manufacturing tools, and in particular relates to a combined wrench for outer hexagonal bolts and nuts.

Background technique

Bolts, as a universal connection, are used in a large amount in machines. In the assembly, disassembly and daily maintenance and repair of the machine, the disassembly and installation of bolts and nuts account for a very large proportion of work. Since the specifications of the bolts and nuts used in a machine are not uniform, it is necessary to be equipped with a certain number of wrenches with various specifications.

Existing wrenches are divided into two categories: movable wrench and fixed wrench, and fixed wrench is divided into fixed bayonet wrench and fixed socket wrench. Adjustable wrench can adapt to many specifications of bolts and nuts, and an adjustable wrench can operate bolts and nuts of various specifications, but because the bayonet of the adjustable wrench is not fixed, it is easy to make the bolts and nuts slip and damage the bolts and nuts. Simultaneously, when operating with an adjustable wrench, it is necessary to open and close the wrench frequently, which is inconvenient to operate. In contrast, the fixed bayonet wrench overcomes the shortcomings of the adjustable wrench, is easy to operate, and has better protection for bolts and nuts. But a fixed bayonet wrench corresponds to one or two specifications of bolts and nuts for disassembly and assembly, and a bayonet wrench has a handle. Therefore, the fixed bayonet wrench has many specifications, a large number, large volume and heavy weight. The fixed socket wrench adapts to the disassembly and assembly of different bolts and nuts by replacing the socket. A fixed socket wrench uses the same handle and multiple specification sockets. Compared with the fixed bayonet wrench, the fixed socket wrench reduces the number of wrenches. The size and weight are very useful. However, the sockets used in the fixed socket wrench are independent of each other, and each socket has high strength requirements, large wall thickness, large material consumption, and high cost. Moreover, each sleeve cannot be stacked and stored, which requires a large storage space and is inconvenient to carry.

Contents of the invention

The purpose of the present invention is to provide a combination wrench for external hexagonal bolts and nuts, which solves the problem that different specifications of external hexagonal bolts and nuts need to use fixed wrenches of different specifications, or the use of adjustable wrenches is easy to cause the wrench to slip relative to the bolts and nuts And the problem of damage.

The technical solution adopted in the present invention is, a combined wrench for external hexagonal bolts and nuts, including a handle, one end of the handle is a ring, the two sides of the ring of the handle are planes, and the two sides of the ring of the handle pass through the The screw is fixed with a lower pressure ring and an upper pressure ring. The lower pressure ring and the upper pressure ring seal the toothed sleeve in the ring of the handle. The paddle is pressed against the hexagonal cylinder group, and a shift fork is installed near the circular ring on the handle.

The present invention is also characterized in that,

The end of the handle away from the circular ring is a stepped cylindrical section, and the end of the cylindrical section is provided with knurling.

The toothed sleeve is an annular structure with planes on both sides, the cross section of the inner wall of the toothed sleeve is a regular hexagon, and the outer wall of the toothed sleeve is provided with rectangular teeth around the entire circumference.

The tooth width of the rectangular teeth on the outer wall of the toothed sleeve is the same as the tooth space width.

The hexagonal cylinder group includes a number of hexagonal cylinders nested in sequence. The cross-sections of the inner and outer walls of the hexagonal cylinder are regular hexagons. The size of the regular hexagon on the outer wall of the largest hexagonal cylinder is the same as that of the regular hexagon on the inner wall of the toothed sleeve. , the size of the regular hexagon on the inner wall of the outer hexagonal tube in the two adjacent hexagonal tubes is the same as the size of the regular hexagon on the outer wall of the inner hexagonal tube, and the size of the regular hexagon on the inner wall of each hexagonal tube corresponds to a standard outer hexagon Bolts and nuts.

Each hexagonal cylinder in the hexagonal cylinder group is provided with a circular hole-shaped cover on the side away from the plectrum.

The beneficial effect of the present invention is that: a combination wrench for external hexagonal bolts and nuts of the present invention adopts the combination of multiple hexagonal tubes to realize the disassembly and assembly of external hexagonal bolts or nuts of various specifications with one wrench. In addition to the advantages of the wrench, the number, volume and weight of the wrench are greatly reduced, and the operation is fast and convenient, and the space occupied by the storage is small, and it is easy to carry. The combined wrench for external hexagonal bolts and nuts has the advantage of protecting the bolts and nuts with a fixed wrench, and at the same time has the advantage that the adjustable wrench can be adapted to disassemble and assemble bolts and nuts of various specifications.

Description of drawings

Fig. 1 is a structural representation of a combination wrench for outer hexagonal bolts and nuts of the present invention;

Fig. 2 is A-A sectional view among Fig. 1;

Fig. 3 is a sectional view of a combined wrench clamping the largest bolt of the present invention;

Fig. 4 is B-B sectional view among Fig. 3;

Fig. 5 is a schematic structural view of a hexagonal cylinder 1 in a combination wrench of the present invention.

In the figure, 1. Toothed sleeve, 2. Hexagonal cylinder group, 2-1. Hexagonal cylinder one, 2-2. Hexagonal cylinder two, 2-3. Hexagonal cylinder three, 2-4. Hexagonal cylinder four, 3. Dial Fork, 4. upper pressure ring, 5. handle, 6. pin shaft, 7. paddle, 8. lower pressure ring.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

A combination wrench for external hexagonal bolts and nuts of the present invention, as shown in Figures 1 and 2, includes a handle 5, one end of the handle 5 is a ring, the other end of the handle 5 is a stepped cylindrical section, and the end of the cylindrical section Knurling is provided, and both sides of the circular ring of the handle 5 are planes, and the two sides of the circular ring of the handle 5 are respectively fixed with a lower pressure ring 8 and an upper pressure ring 4 by screws, and the lower pressure ring 8 and the upper pressure ring 4 connect the teeth Shaped cover 1 is sealed in the ring of handle 5, as shown in Figure 3, Figure 4, toothed cover 1 is the annular structure of two sides plane, and the cross-section of the inner wall of toothed cover 1 is regular hexagon, tooth shape The outer wall of the sleeve 1 is provided with rectangular teeth around the entire circumference. The tooth width of the rectangular teeth on the outer wall of the toothed sleeve 1 is the same as the width of the tooth slot. A paddle 7 is installed, and the paddle 7 can rotate around the pin shaft 6. Turning the paddle 7 can press the hexagonal cylinder group 2, so that the hexagonal cylinder group 2 and the toothed sleeve 1 are integrated, and the handle 5 is installed close to the ring Shift fork 3 is arranged, and the upper end of rotation shift fork 3 can make shift fork 3 lower end forks contact with the rectangular tooth of toothed cover 1 outside or disengage.

The hexagonal tube group 2 includes several hexagonal tubes nested in sequence. The cross-sections of the inner and outer walls of the hexagonal tubes are all regular hexagons. The size is the same, the size of the regular hexagon on the inner wall of the outer hexagonal tube in the two adjacent hexagonal tubes is the same as the size of the regular hexagon on the outer wall of the inner hexagonal tube, and the size of the regular hexagon on the inner wall of each hexagonal tube corresponds to a specification Hex bolts and nuts. Each hexagonal cylinder in the hexagonal cylinder group 2 is provided with a circular hole-shaped cover on the side away from the plectrum 7 . One side of each hexagonal cylinder provided with a circular hole-shaped cover is thinner than the other side of the hexagonal cylinder.

In the present invention, taking four hexagonal cylinders as an example, the hexagonal cylinder group 2 includes hexagonal cylinder one 2-1, hexagonal cylinder two 2-2, hexagonal cylinder three 2-3, hexagonal cylinder four 2-4, and hexagonal cylinder four 2-4, which are nested in sequence. Tube 1 2-1 is embedded in the toothed sleeve 1, as shown in Figure 5, the structure of the hexagonal tube is illustrated by taking the hexagonal tube 2-1 as an example: the cross-sections of the inner and outer walls of the hexagonal tube 2-1 are regular hexagons, One side of the hexagonal tube-2-1 is provided with a circular hole-shaped cover, and the side of the hexagonal tube-2-1 with the circular-hole-shaped cover is thinner than the other side, so that the hexagonal tube-2-1 is convenient to the toothed cover 1 It can be loaded and removed in the center, and the axial limit can also be carried out. In addition, if each hexagonal cylinder is formed by stamping, the draft angle can also be used as the cone angle. Hexagonal cylinder two 2-2, hexagonal cylinder three 2-3, hexagonal cylinder four 2-4 have the same structural form as hexagonal cylinder one 2-1, and the specifications and sizes decrease successively.

According to the actual application situation, the hexagonal barrel group 2 can divide the specifications of the commonly used hexagonal bolts and nuts into multiple sections from large to small, and each section corresponds to a combination wrench for external hexagonal bolts and nuts. In each combined wrench, the number of hexagonal cylinders contained in the hexagonal cylinder group 2 may be the same or different, and the specifications of the corresponding bolts and nuts may also overlap appropriately.

The steps of using a combination wrench for outer hexagonal bolts and nuts of the present invention:

As shown in Figure 1 and Figure 2, put hexagonal cylinder four 2-4 into hexagonal cylinder three 2-3, hexagonal cylinder three 2-3 into hexagonal cylinder two 2-2, hexagonal cylinder two 2-2 into hexagonal cylinder one 2-1, put the hexagonal cylinder 2-1 into the inner wall of the toothed sleeve 1, turn the paddle 7 to block the four parts in the hexagonal cylinder group 2 in turn; turn the shift fork 3 to select between the toothed sleeve 1 and the handle 5 The direction of rotation between them is used to disassemble and assemble the smallest size hexagonal bolts and nuts.

As shown in Fig. 3 and Fig. 4, the four hexagonal cylinders in the hexagonal cylinder group are all taken out from the positive hexagonal tapered hole of the toothed sleeve 1, and the outer hexagonal bolts and nuts of the largest specification can be disassembled.

If the outer hexagonal bolts and nuts to be disassembled are neither the largest nor the smallest specification, but correspond to the hexagonal cylinder three 2-3, then sequentially install the hexagonal cylinder one 2-1, the hexagonal cylinder two 2-2 and the hexagonal Put the cylinder 2-3 into the inner wall of the toothed sleeve 1, turn the paddle 7 to lock the first hexagonal cylinder 2-1, the second hexagonal cylinder 2-2 and the third hexagonal cylinder 2-3, and clamp them in the toothed sleeve 1 , Insert the outer hexagonal bolts and nuts into the hexagonal cylinder three 2-3, and disassemble the outer hexagonal bolts and nuts.

The working principle of the present invention is:

A combination wrench used for external hexagonal bolts and nuts. Through the combination of a series of hexagonal cylinders, the size of the inner hexagonal hole of the socket used to fix the external hexagonal bolts and nuts is adjusted to adapt to different specifications of the external hexagonal sockets. Disassembly and assembly of bolts and nuts. That is, a combination wrench for external hexagonal bolts and nuts of the present invention adopts a layer-by-layer superposition method, so that hexagonal cylinders are added successively to the positive hexagonal tapered hole of the fixed wrench of the largest specification until the smaller size and more can be disassembled. Small size hex bolts and nuts.

The outstanding features of the present invention are: a combination wrench for outer hexagonal bolts and nuts can loosen and tighten outer hexagonal bolts and nuts of various specifications. Defects that are chamfered due to slipping. Compared with the fixed socket wrench, the number of sockets required by the combinable wrench of the present invention is the same, and the cross-sectional size of each socket is small, and the weight is light; moreover, the sockets involved in the present invention can be stacked and stored, and are convenient to carry .

Claims (3)

1. it is a kind of for outer-hexagonal bolt, the combination wrench of nut, it is characterised in that including handle (5), one end of handle (5) It is annulus, the annulus both sides of handle (5) are plane, and the two sides of the annulus of handle (5) are mounted by means of screws with down respectively Be enclosed in tooth profile sleeve (1) in the annulus of handle (5) by pressure ring (8) and upper press ring (4), lower pressure ring (8) and upper press ring (4), tooth profile sleeve (1) hexagonal cylinder group (2) is provided with, plectrum (7) is provided with by bearing pin (6) on tooth profile sleeve (1), plectrum (7) press against hexagonal cylinder Group (2), shift fork (3) is provided with handle (5) near annular shape；

The tooth profile sleeve (1) is the cyclic structure of two side planes, and the cross section of the inwall of tooth profile sleeve (1) is regular hexagon, tooth form Complete cycle rectangular teeth is provided with the outer wall for covering (1)；

Hexagonal cylinder group (2) includes some hexagonal cylinders nested successively, and the cross section of the inside and outside wall of hexagonal cylinder is positive six side Shape, the size of the regular hexagon of the outer wall of the hexagonal cylinder of maximum is identical with the size of the inwall regular hexagon of the tooth profile sleeve (1), Positive six side of outer wall of the hexagonal cylinder of the size of the inwall regular hexagon of outside hexagonal cylinder and inside in adjacent two hexagonals cylinder The size of shape is identical, size correspondence one outer-hexagonal bolt, the nut of specification of the inwall regular hexagon of each hexagonal cylinder；

Each hexagonal cylinder is provided with circle hole shape lid away from the side of the plectrum (7) in hexagonal cylinder group (2).

2. it is according to claim 1 a kind of for outer-hexagonal bolt, the combination wrench of nut, it is characterised in that the hand Handle (5) is ladder circle shell of column away from one end of annulus, and the end of cylindrical section is provided with annular knurl.

3. it is according to claim 1 a kind of for outer-hexagonal bolt, the combination wrench of nut, it is characterised in that the tooth The facewidth of the rectangular teeth of shape set (1) outer wall is identical with space width.