Internal and external combined hexagonal wrench

Abstract

The invention discloses an inside and outside combined type hexagon wrench, and relates to the technical field of hexagon wrenches, the inside and outside combined type hexagon wrench comprises a fixed sleeve, N hexagon heads which are mutually nested from outside to inside and N adjusting knobs which are respectively used for adjusting the N hexagon heads to stretch out and draw back, every two adjacent hexagon heads are in sliding connection, and the number of the N adjusting knobs is the same as that of the N hexagon heads; the sizes of the inner walls and the outer walls of the N hexagon heads from outside to inside correspond to the sizes of inner hexagon wrenches and outer hexagon wrenches of different models from large to small respectively, the right end of the fixing sleeve is provided with a groove used for containing the N hexagon heads which are in a mutually-nested state, and the inner wall of the groove is attached to the outer wall of the hexagon head located on the outermost side and is in sliding connection with the outer wall of the hexagon head located on the outermost side. According to the device, under the condition that wrenches of corresponding models do not need to be found according to the models of the inner fixing piece and the outer fixing piece, threaded connection between the inner hexagonal fixing piece and the outer hexagonal fixing piece of different types and models and the connecting piece of different types and models can be relieved or fixed in a threaded mode only through one wrench assembly.

Description

Technical Field

[0001] This invention patent relates to the technical field of hexagon wrenches, specifically an internal and external combined hexagon wrench. Background Art

[0002] Existing hexagon wrenches are divided into two major categories: internal angle wrenches and external hexagon wrenches. Among them, both external hexagon wrenches and internal hexagon wrenches have different models. When in specific use, for the threaded connections between different types and models of internal and external hexagon fasteners and connectors, different models of wrenches need to be found for screwing, unscrewing or re-screwing. The present invention designs a combined hexagon wrench, which is applicable to both internal hexagons and external hexagons, and integrates wrenches of different models for internal and external hexagon fasteners, so as to achieve the purpose of one wrench being applicable to multiple models of internal and external hexagon fasteners.

[0003] Content of the Invention Patent

[0004] The purpose of this invention patent is to provide an internal and external combined hexagon wrench to solve the problems raised in the above background art.

[0005] To solve the above technical problems, this invention patent provides the following technical solution: an internal and external combined hexagon wrench, including a fixed sleeve, N hexagon heads nested with each other from outside to inside, and N adjusting knobs respectively used to adjust the expansion and contraction of the N hexagon heads. The adjacent two hexagon heads are slidably connected. The number of the N adjusting knobs is the same as the number of the N hexagon heads. The inner and outer wall dimensions of the N hexagon heads from outside to inside respectively correspond to the dimensions of different models of internal and external hexagon wrenches from large to small. A groove for accommodating the N hexagon heads in a nested state is provided at the right end of the fixed sleeve. The inner wall of the groove fits and is slidably connected with the outer wall of the outermost hexagon head, and is communicated with the inner wall of the fixed sleeve.

[0006] Further, a cylinder is integrally provided on the left side of the hexagon head. The N cylinders are nested with each other from outside to inside, and the adjacent two cylinders are slidably connected. The lengths of the N cylinders from outside to inside decrease in sequence. A plurality of accommodation grooves communicated with the inner wall of the fixed sleeve are equidistantly provided on the outer wall of the fixed sleeve. The number of the accommodation grooves is less than that of the adjusting knobs. The Nth adjusting knob is rotatably provided at the left end of the fixed sleeve. The 1st to the N - 1th adjusting knobs are respectively provided in the N accommodation grooves. The inner walls of the 1st to the Nth adjusting knobs are respectively threadedly connected with the outer walls of the 1st to the Nth cylinders.

[0007] Further, an accommodation cavity is formed on the inner wall of the fixed sleeve between two adjacent accommodation grooves. The inner diameters of the N accommodation cavities from left to right increase in sequence, and the inner walls are respectively in fit and sliding connection with the outer walls of the Nth to the first cylinders. The inner diameter of the fixed sleeve between the left side of the groove and the first accommodation groove is equal to the inner diameter of the first accommodation cavity.

[0008] Further, the integrally provided cylinder and hexagonal head form a hexagonal head assembly. A chute for sliding and contracting the adjacent hexagonal heads inside the same component hexagonal head is provided on the inner wall at the right end of the cylinder. The inner wall of the chute is in communication with the inner wall of the same component hexagonal head, and the cross-sectional shape and size correspond to each other.

[0009] Further, the Nth hexagonal head and the Nth cylinder are both solid.

[0010] Further, a circular groove with an inner wall communicating with the inner wall of the first accommodation cavity is provided at the left end of the fixed sleeve. The inner diameter of the circular groove is larger than the inner diameter of the first accommodation cavity. A rotating shaft portion integrally provided with the first adjusting knob is in fit and rotational connection inside the circular groove. An annular groove is provided in the middle of the inner wall of the circular groove. A positioning portion integrally provided with the outer wall of the rotating shaft is in fit and rotational connection inside the annular groove. The inner wall of the rotating shaft portion is in threaded connection with the outer wall of the Nth cylinder.

[0011] Further, it further includes a disassembly and assembly cover plate. The fixed sleeve located on the left side of the Nth accommodation cavity is provided with a section outward with the central axis as the reference. The disassembly and assembly cover plate is fixed to the section by N fixing screws. The inner wall of the circular groove is composed of the inner wall of the fixed sleeve on the left side of the first accommodation cavity and the inner wall of the disassembly and assembly cover plate.

[0012] Further, the length of the inner wall of the groove > the length of the hexagonal head.

[0013] The beneficial effects achieved by this invention patent are as follows: By providing N hexagonal heads nested with each other from outside to inside and N adjusting knobs respectively used to adjust the expansion and contraction of the N hexagonal heads, and at the same time, by setting the sizes of the inner and outer walls of the N hexagonal heads from inside to outside to be the sizes of different models of inner and outer hexagonal wrenches corresponding to different models from small to large, it is realized that without the need to find the corresponding model wrench according to the models of the inner and outer fixing parts, only one wrench assembly can be used to release or screw the threaded connections between different types and models of inner and outer hexagonal fixing parts and connecting parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the internal and external combined hexagonal wrench in the embodiment;

[0015] Figure 2 It is an exploded schematic structural diagram of the internal and external combined hexagonal wrench in the embodiment;

[0016] Figure 3 is the front cross-sectional view of the internal and external combined hexagonal wrench in the embodiment;

[0017] Figure 4 is the structural schematic diagram of the fixed sleeve in the embodiment;

[0018] Figure 5 is the structural schematic diagram of the disassembly and assembly cover plate in the embodiment;

[0019] Figure 6 is the front cross-sectional view of the fixed sleeve in the embodiment;

[0020] Figure 7 is the structural schematic diagram in the embodiment where the inner wall length of the external hexagonal groove > the length of the hexagonal head;

[0021] Figure 8 is the front cross-sectional view of the chute in the embodiment. Detailed implementation manner

[0022] The following further describes the present invention patent with reference to the accompanying drawings.

[0023] As Figures 1-3 shown, the present invention patent discloses an internal and external combined hexagonal wrench, including: a fixed sleeve 1, N hexagonal heads 2 nested with each other from outside to inside, and N adjusting knobs 3 respectively used to adjust the telescoping of the N hexagonal heads 2. Adjacent two hexagonal heads 2 are slidably connected. The number of the N adjusting knobs 3 is the same as the number of the N hexagonal heads 2. The inner and outer wall dimensions of the N hexagonal heads 2 from outside to inside respectively correspond to the dimensions of different models of internal and external hexagonal wrenches from large to small. A groove 11 for accommodating the N hexagonal heads 2 in a nested state is provided at the right end of the fixed sleeve 1. The inner wall of the groove 11 is in fit and slidable connection with the outer wall of the outermost hexagonal head 2 and is communicated with the inner wall of the fixed sleeve 1.

[0024] Further, as Figures 1-3 shown, a cylinder 21 is integrally provided on the left side of the hexagonal head 2. The N cylinders 21 are nested with each other from outside to inside, and adjacent two cylinders 21 are slidably connected. The lengths of the N cylinders 21 decrease in sequence from inside to outside. The serial numbers of the N hexagonal heads 2 from outside to inside, the N cylinders 21 from outside to inside, and the N adjusting knobs 3 from right to left are all No. 1 to No. N. A plurality of accommodation grooves 12 communicated with the inner wall of the fixed sleeve 1 are equidistantly provided on the outer wall of the fixed sleeve 1. The number of the accommodation grooves 12 is < 1 compared with the number of the adjusting knobs 3. The Nth adjusting knob 3 is rotatably provided at the left end of the fixed sleeve 1. The 1st to the N - 1th adjusting knobs 3 are respectively provided in the N accommodation grooves 12. The inner walls of the 1st to the Nth adjusting knobs 3 are respectively in threaded connection with the outer walls of the 1st to the Nth cylinders 21.

[0025] Based on the above structure, as Figure 3 shown, the initial state is that the right ends of the N hexagonal heads 2 are horizontally perpendicular to the right end of the fixed sleeve 1;

[0026] As Figures 1-3 shown, when it is necessary to release or tighten the threaded connection between the internal or external hexagonal fastener and the connecting member, by rotating a corresponding adjusting knob 3 in the forward direction, the adjusting knob 3 drives the cylinder 21 threadedly connected to the adjusting knob 3 through the thread to push the right end of the hexagonal head 2 integrally connected to the cylinder 21 out of the groove 11 and engage with the inner wall of the internal hexagonal or the outer wall of the external hexagonal. Then, by rotating the internal and external combined hexagonal wrench to drive the internal or external hexagonal fastener to rotate, the effect of releasing or tightening the threaded connection between the internal or external hexagonal fastener and the connecting member is achieved;

[0027] During the process of the hexagonal head 2 extending out, the groove 11 limits the hexagonal head 2 to prevent the hexagonal head 2 from rotating together with the adjusting knob 3;

[0028] After the right end of the hexagonal head 2 extends out, it is necessary to keep the left end of the hexagonal head 2 still in the groove 11;

[0029] For example: when it is necessary to release or tighten the threaded connection between the largest-sized internal or external hexagonal fastener and the connecting member, by rotating the first adjusting knob 3 in the forward direction, the first adjusting knob 3 drives the first cylinder 21 through the thread to drive the first hexagonal head 2 to extend out and engage with the inner wall of the internal hexagonal fastener or the outer wall of the external hexagonal fastener. Then, by rotating the internal and external combined hexagonal wrench to drive the internal or external hexagonal fastener to rotate, the effect of releasing or tightening the threaded connection between the internal or external hexagonal fastener and the connecting member is achieved;

[0030] Preferably, in order to ensure the force-bearing strength of the hexagonal head when connecting with the internal or external hexagonal fastener, when the hexagonal head 2 is connected to the internal or external hexagonal fastener, the N hexagonal heads 2 on the outer side or inner side of the extended hexagonal head 2 all extend out, and the right ends of the N extended hexagonal heads are horizontally perpendicular;

[0031] For example: when it is also necessary to use the fifth hexagonal head to connect with the external hexagonal fastener, the first to fifth hexagonal heads 2 from the outside to the inside are controlled to extend out in sequence through the first to fifth adjusting knobs 3. When the fifth hexagonal head 2 rotates the external hexagonal fastener, the force received by the fifth hexagonal head 2 is transmitted to the fourth to first hexagonal heads 2 in sequence through the nested connection relationship;

[0032] Similarly, when it is also necessary to use the fifth hexagon head to connect with the internal hexagon fastener, the Nth to fifth adjusting knobs 3 are sequentially used to control the Nth to fifth hexagon heads 2 to extend. When the fifth hexagon head 2 rotates the internal hexagon fastener, the force received by the fifth hexagon head 2 is sequentially transmitted to the sixth to Nth hexagon heads 2 through the nested connection relationship;

[0033] The force received by the fifth hexagon head 2 is generated by the screw fixation relationship between the internal or external hexagon fastener and the connecting piece.

[0034] Furthermore, as Figures 2-4 shown in FIGS. 5 and 6, in order to prevent the cylinder from shaking due to the gap between the inner wall of the fixed sleeve 1, the inner wall of the fixed sleeve 1 between two adjacent accommodating grooves 12 forms an accommodating cavity 13. The inner diameters of the N accommodating cavities 13 from left to right increase sequentially, and the inner walls are respectively in contact with and slidably connected to the outer walls of the (N - 1)th to first cylinders 21;

[0035] The serial numbers of the N accommodating cavities 13 from right to left are the first to the Nth;

[0036] When the cylinder 21 moves, the outer wall of the cylinder 21 slides along the inner wall of the corresponding accommodating cavity 13;

[0037] For example: when the first cylinder 21 slides, the outer wall of the first cylinder 21 located on the left side of the first adjusting knob 3 slides along the inner wall of the first accommodating cavity 13;

[0038] Furthermore, as Figure 3 shown in FIG. 7, in order to increase the adhesion between the outer wall of the first cylinder and the inner wall of the fixed sleeve, the inner diameter of the fixed sleeve 1 between the left side of the groove 11 and the first accommodating groove 12 is equal to the inner diameter of the first accommodating cavity 13. When the first cylinder 21 located on the right side of the first adjusting knob 3 moves, the outer wall of the first cylinder 21 slides along the inner wall of the fixed sleeve 1 between the left side of the groove 11 and the first accommodating groove 12.

[0039] Furthermore, as Figures 2-6 shown in FIG. 8, in order to prevent the Nth adjusting knob and the Nth cylinder from falling off due to the release or screw fixation of the threaded connection, a circular groove 14 is provided at the left end of the fixed sleeve 1, and the inner wall of the circular groove 14 is communicated with the inner wall of the first accommodating cavity 13. The inner diameter of the circular groove 14 is larger than the inner diameter of the first accommodating cavity 13. A rotating shaft portion 31 integrally provided with the Nth adjusting knob 3 is fitted and rotatably connected in the circular groove 14. An annular groove 15 is provided in the middle of the inner wall of the circular groove 14. A positioning portion 32 integrally provided with the outer wall of the rotating shaft 31 is fitted and rotatably connected in the annular groove 15. The annular groove 15 is used to limit the positioning portion 32. The inner wall of the rotating shaft portion 31 is threadedly connected to the outer wall of the Nth cylinder 21.

[0040] Furthermore, as Figures 1-5As shown in FIGS. 6 and 7, in order to facilitate the replacement of the Nth adjustment knob and avoid the inability to disassemble due to the thread connection between the Nth adjustment knob and the Nth cylinder being stripped, there is also a disassembly and assembly cover plate 4. The fixed sleeve 1 on the left side of the Nth accommodating cavity 13 is provided with a section 16 outward with the central axis as the reference. The disassembly and assembly cover plate 4 is fixed to the section 16 by N fixing screws. The inner wall of the circular groove 14 is composed of the inner wall of the fixed sleeve 1 on the left side of the Nth accommodating cavity 13 and the inner wall of the disassembly and assembly cover plate 4;

[0041] By removing the fixation between the disassembly and assembly cover plate 4 and the section 16 by the N fixing screws, the exposed area of the first adjustment knob 3 is increased, thereby facilitating the replacement of the Nth adjustment knob 3 with tools.

[0042] Furthermore, as Figure 3 and 8 shown, the integrally provided cylinder 21 and hexagon head 2 form a hexagon head assembly. The inner wall of the right end of the cylinder 21 is provided with a chute 22 for the adjacent hexagon heads 2 inside the same-component hexagon head 2 to slide and contract. The inner wall of the chute 22 is connected to the inner wall of the same-component hexagon head 2, and the cross-sectional shape and size correspond to each other;

[0043] When it is necessary to release or tighten the threaded connection between the internal hexagon fastener and the connecting piece, by contracting the N hexagon heads 2 inside the hexagon head 2 corresponding to the external hexagon fixing size, and keeping the right ends of the contracted N hexagon heads 2 horizontally perpendicular, so that the hexagon head 2 can be inserted into the external hexagon fastener without protruding;

[0044] When the hexagon head 2 contracts, the outer wall of the hexagon head 2 slides along the inner wall of the adjacent external chute 22;

[0045] For example: when the 5th hexagon head 2 needs to be used, by sequentially rotating the Nth to 6th adjustment knobs in the reverse direction, the Nth to 6th hexagon heads 2 are sequentially contracted;

[0046] Preferably, as Figure 8 shown, the initial state of the internal and external combined hexagon wrench is: the left end of the (N (where N refers to any one except the 1st)+1)th hexagon head 2 from the outside to the inside fits with the left end of the inner wall of the Nth chute 22, and the left end of the 1st hexagon head 2 fits with the left end of the inner wall of the groove 11;

[0047] When it is necessary to release or tighten the threaded connection between the external hexagon fastener and the connecting piece, directly insert the external hexagon fastener into the corresponding model hexagon head 2 and rotate the internal and external combined hexagon wrench;

[0048] For example: the smallest model external hexagon fastener is inserted into the Nth hexagon head 2;

[0049] When it is necessary to release or tighten the threaded connection between the hexagon socket fastener and the connecting piece, the adjusting knob 3 is rotated to drive the cylinder 21 to push the hexagon head 2 of the corresponding model out of the left end of the groove 11, and then the hexagon head 2 is inserted into the hexagon socket fastener and rotated.

[0050] Further, as Figure 1 and 3 shown, in order to increase the overall strength between N hexagon head assemblies, the Nth hexagon head 2 and the Nth cylinder 21 are both solid. The N hexagon head assemblies form a hexagon head mechanism. When the hexagon head mechanism is bent under force, the solid Nth hexagon head 2 and the Nth cylinder 21 provide support for the hexagon head mechanism from the inside; since the Nth hexagon head 2 is set to be solid, the Nth hexagon head 2 is used to insert into the smallest model of the hexagon socket fastener, and the (N - 1)th hexagon head 2 is used to insert into the smallest model of the external hexagon fastener.

[0051] Further, as Figure 3 and 7 shown, in order to enable the groove to have the function of releasing or tightening the connection between the external hexagon fastener and the connecting piece, the inner wall length of the external hexagon groove 11 > the length of the hexagon head 2;

[0052] As Figure 7 shown, the hexagon head mechanism is completely received into the groove 11, and a connection port is formed between the inner wall of the groove 11 and the right end of the hexagon head mechanism. The connection port is used for inserting the external hexagon fastener, and the size of the inner wall of the connection port is equal to the size of the inner wall of the largest model of the internal hexagon wrench.

[0053] The above is only a preferred specific embodiment of the present invention patent, but the protection scope of the present invention patent is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention patent, according to the technical solution of the present invention patent and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention patent.

Claims

1. Internal and external combined hexagon wrench, characterized in that: It includes a fixed sleeve (1), N hexagon heads (2) nested with each other from outside to inside, and N adjusting knobs (3) respectively used to adjust the telescoping of the N hexagon heads (2). The adjacent two hexagon heads (2) are slidably connected. The number of the N adjusting knobs (3) is the same as that of the N hexagon heads (2). The inner and outer wall dimensions of the N hexagon heads (2) from outside to inside respectively correspond to the dimensions of different models of inner and outer hexagon wrenches from large to small. A groove (11) for accommodating the N hexagon heads (2) in a nested state is provided at the right end of the fixed sleeve (1). The inner wall of the groove (11) fits and is slidably connected with the outer wall of the outermost hexagon head (2) and is communicated with the inner wall of the fixed sleeve (1).

2. The internal and external combined hexagonal wrench according to claim 1, characterized in that: A cylinder (21) is integrally provided on the left side of the hexagon head (2). The N cylinders (21) are nested with each other from outside to inside, and the adjacent two cylinders (21) are slidably connected. The lengths of the N cylinders (21) from outside to inside decrease in sequence. N accommodating grooves (12) communicated with the inner wall of the fixed sleeve (1) are equidistantly arranged on the outer wall of the fixed sleeve (1). The number of the accommodating grooves (12) is less than 1 compared with the number of the adjusting knobs (3). The Nth adjusting knob (3) is rotatably arranged at the left end of the fixed sleeve (1). The 1st to the N - 1th adjusting knobs (3) are respectively arranged in the N accommodating grooves (12). The inner walls of the 1st to the Nth adjusting knobs (3) are respectively threadedly connected with the outer walls of the 1st to the Nth cylinders (21).

3. The internal and external combined hexagonal wrench according to claim 2, wherein: A accommodating cavity (13) is formed on the inner wall of the fixed sleeve (1) between the adjacent two accommodating grooves (12). The inner diameters of the N accommodating cavities (13) from left to right increase in sequence, and the inner walls are respectively in fit and slidable connection with the outer walls of the (N - 1)th to the 1st cylinders (21). The inner diameter of the fixed sleeve (1) between the left side of the groove (11) and the 1st accommodating groove (12) is equal to the inner diameter of the 1st accommodating cavity (13).

4. The internal and external combined hexagonal wrench according to claim 2, characterized in that: The integrally provided cylinder (21) and the hexagon head (2) form a hexagon head assembly. A chute (22) for allowing the adjacent hexagon head (2) inside the same - component hexagon head (2) to slide and contract is provided on the inner wall of the right end of the cylinder (21). The inner wall of the chute (22) is communicated with the inner wall of the same - component hexagon head (2), and the cross - sectional shape and size correspond to each other.

5. The internal and external combined hexagonal wrench according to any one of claims 2-4, characterized in that: Both the Nth hexagon head (2) and the Nth cylinder (21) are solid.

6. The internal and external combined hexagon wrench according to any one of claims 2-4, characterized in that: A circular groove (14) with an inner wall communicated with the inner wall of the first accommodating cavity (13) is provided at the left end of the fixed sleeve (1). The inner diameter of the circular groove (14) is larger than that of the first accommodating cavity (13). A rotating shaft part (31) integrally provided with the first adjusting knob (3) is in fit and rotatably connected in the circular groove (14). An annular groove (15) is provided in the middle of the inner wall of the circular groove (14). A positioning part (32) integrally provided with the outer wall of the rotating shaft (31) is in fit and rotatably connected in the annular groove (15). The inner wall of the rotating shaft part (31) is threadedly connected with the outer wall of the Nth cylinder (21).

7. The internal and external combined hexagonal wrench according to claim 6, wherein: It further includes a dismountable cover plate (4). The fixed sleeve (1) located on the left side of the Nth accommodating cavity (13) is provided with a cross-section (16) outward with the central axis as the reference. The dismountable cover plate (4) is fixed to the cross-section (16) by N fixing screws. The inner wall of the circular groove (14) is composed of the inner wall of the fixed sleeve (1) located on the left side of the first accommodating cavity (13) and the inner wall of the dismountable cover plate (4).

8. The internal and external combined hexagon wrench according to claim 7, wherein: The length of the inner wall of the groove (11) > the length of the hexagonal head (2).

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