Multifunctional compasses

Abstract

The utility model relates to multifunctional compasses which comprise a compasses connecting seat, a first compasses supporting leg and a second compasses supporting leg, wherein the first compasses supporting leg and the second compasses supporting leg are rotationally connected with the compasses connecting seat. The vernier caliper assembly comprises a vernier scale, the vernier scale is movably arranged on the first compass supporting leg in a sleeving mode, at least one first measuring clamping jaw is arranged at the end, close to the compass connecting base, of the first compass supporting leg, and at least one second measuring clamping jaw is arranged at the end, close to the compass connecting base, of the vernier scale. The number of the second measuring clamping jaws is the same as that of the first measuring clamping jaws, the second measuring clamping jaws are matched with the first measuring clamping jaws in a one-to-one correspondence mode, first length scale marks are arranged on the first compass supporting leg, and vernier scale marks matched with the first length scale marks are arranged on the vernier scale. The multifunctional compasses not only realize the functions of compasses, but also can realize the functions of the vernier caliper and the magnifying glass, so that the multifunctional compasses have multiple functions, and are convenient to store and carry about for use.

Description

TECHNICAL FIELD

[0001] The utility model relates to compass technology field especially is to point to a kind of multifunctional compass. BACKGROUND

[0002] Compass is often needed in our learning, teaching and some work Tools, but the compass in the prior art has single function, can only realize the function of drawing circle or arc, it is difficult to meet the use demand of user, especially for engineers, they often need to measure, observation, record, draw, repair and other work, therefore often need to carry pen, compass, protractor, vernier caliper, magnifying glass, screwdriver, needle-shaped tool and other observation, drawing and hand tools, sometimes in the dark environment also need to carry illuminating lamp, since the observation tool, drawing tool, hand tool, illuminating lamp and so on are independent tools and all have larger volume, so many kinds of tools are inconvenient to store and carry.

[0003] Therefore, it is necessary to provide a technical solution to solve the above problems. CONTENT OF UTILITY MODEL

[0004] The utility model aims at providing a kind of multifunctional compass, can solve the technical problem that engineer needs to prepare multiple independent tools with larger volume in prior art, so as to cause the technical problem of inconvenient storage and inconvenient carrying.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A kind of multifunctional compass, including compass connecting seat, and the first compass leg and the second compass leg of rotation connection with the compass connecting seat;It further includes vernier caliper assembly, the vernier caliper assembly includes vernier scale, the vernier scale is movably sleeved on the first compass leg, at least one first measurement claw is arranged on the one end of the first compass leg close to the compass connecting seat, at least one second measurement claw is arranged on the one end of the vernier scale close to the compass connecting seat, the number of the second measurement claw is same with the number of the first measurement claw, and the second measurement claw and the first measurement claw one-to-one corresponding cooperation, first length scale line is arranged on the first compass leg, vernier scale line is arranged on the vernier scale and cooperates with the first length scale line.

[0007] Further, two first measuring clamps are arranged on one end of the first compass leg close to the compass connecting base, the two first measuring clamps are a first outer measuring clamp and a first inner measuring clamp respectively, two second measuring clamps are arranged on one end of the vernier close to the compass connecting base, the two second measuring clamps are a second outer measuring clamp and a second inner measuring clamp respectively, the first outer measuring clamp and the second outer measuring clamp are matched, and the first inner measuring clamp and the second inner measuring clamp are matched; fastening screws and driving blocks are arranged on both sides of the vernier respectively.

[0008] Further, a positioning needle assembly is arranged on one end of the first compass leg away from the compass connecting base, the positioning needle assembly comprises a positioning needle and a mounting seat, the positioning needle is arranged on the mounting seat, and a mounting groove is arranged on one end of the first compass leg away from the compass connecting base, and the mounting seat is detachably inserted into the mounting groove.

[0009] Further, a measuring needle is connected to one end of the vernier away from the compass connecting base, a fixing ring is arranged on one side of the mounting seat, and one end of the measuring needle away from the vernier is movably arranged in the fixing ring.

[0010] Further, one side of the first compass leg opposite to the second compass leg is arranged as a first plane, one side of the second compass leg opposite to the first compass leg is arranged as a second plane, and the first plane and the second plane can be mutually attached; a second length scale is arranged on the first plane, and a third length scale is arranged on the second plane.

[0011] Further, a receiving hole is arranged on one side of the second compass leg opposite to the first compass leg, the positioning needle is arranged at an angle between the first compass leg and the positioning needle, and one end of the positioning needle away from the compass connecting base is arranged towards the second compass leg, and the positioning needle can be inserted into the receiving hole.

[0012] Further, one side edge of the first compass leg is a first straight edge, and the other side edge is a wavy edge.

[0013] Further, the multifunctional compass further comprises a magnifying glass assembly, and the magnifying glass assembly is connected to any one of the compass connecting base, the first compass leg, the second compass leg or the vernier caliper assembly.

[0014] Further, the magnifying glass assembly comprises a plug-in sleeve and a magnifying glass rotationally connected to the plug-in sleeve, and the plug-in sleeve is detachably sleeved on the first measuring clamp and / or the second measuring clamp.

[0015] Further, the illumination module is arranged on the side of the plug-in sleeve away from the magnifying glass, and comprises a mounting cylinder connected with the plug-in sleeve, a battery arranged in the mounting cylinder, and an illuminating lamp arranged on one end of the mounting cylinder and connected with the battery.

[0016] Further, the multifunctional compass further comprises an angle protractor, one surface of the angle protractor is provided with an angle scale, and the angle protractor is detachably connected with at least one of the compass connecting seat, the first compass leg or the second compass leg.

[0017] Further, one side edge of the angle protractor is a first arc-shaped edge, the other side edge of the angle protractor is composed of a second arc-shaped edge and a second straight edge connected with each other, a fourth length scale is arranged on the surface of the angle protractor provided with the angle scale and located close to the second straight edge, and the other surface of the angle protractor is provided with a radius scale and a radius length contrast value corresponding to the radius scale.

[0018] Further, the multifunctional compass further comprises a threaded fastener and a nut, the threaded fastener passes through the compass connecting seat, the first compass leg and the second compass leg and is threadedly connected with the nut.

[0019] Further, the multifunctional compass further comprises a pen holder and a rubber, the pen holder is arranged at one end of the first compass leg close to the compass connecting seat, the top of the compass connecting seat is provided with a containing groove, and the rubber is arranged in the containing groove.

[0020] Further, the second compass leg comprises a connecting pen sleeve and a double-head pen tool detachably plugged with the connecting pen sleeve, one end of the connecting pen sleeve away from the double-head pen tool is rotationally connected with the compass connecting seat, one end of the double-head pen tool is a pen or a tool piece, the other end of the double-head pen tool is also a pen or a tool piece, and the tool piece is any one of a pencil core-shaped tool, a screwdriver, a cutting knife, a needle-shaped tool or a lamp assembly.

[0021] Further, the double-head pen tool further comprises an intermediate hollow pen barrel and pen heads detachably connected at two ends of the intermediate hollow pen barrel, a pressing assembly is arranged in the middle of the intermediate hollow pen barrel, a through hole matched with the pressing assembly is formed in the side wall of the intermediate hollow pen barrel, a first spring and any one of a pressing automatic pencil inner core, a pressing pencil core, the screwdriver, the cutting knife, the needle-shaped tool or the lamp assembly are arranged between one of the pen heads and the pressing assembly, and a second spring and any one of a pressing automatic pencil inner core, a pressing pencil core, the screwdriver, the cutting knife, the needle-shaped tool or the lamp assembly are arranged between the other of the pen heads and the pressing assembly.

[0022] Further, the inner core of the automatic propelling pencil comprises a hollow barrel, one end of the hollow barrel is provided with an inner core tube, a storage cavity is arranged between the inner wall of the hollow barrel and the outer wall of the inner core tube, the storage cavity is used for storing a plurality of pencil cores and / or a plurality of pencil core-shaped tools; the end of the hollow barrel close to the inner core tube is provided with an elastic clamping assembly, a through core channel is arranged through the inner core tube and the elastic clamping assembly, the pencil core or the pencil core-shaped tool can be inserted in the through core channel, and the elastic clamping assembly can be switched between the state of clamping the pencil core or the pencil core-shaped tool and the state of releasing the pencil core or the pencil core-shaped tool; the end of the hollow barrel away from the inner core tube is detachably provided with a tail plug.

[0023] Further, the pencil core-shaped tool comprises a pencil core-shaped part and an action part arranged at one end of the pencil core-shaped part, and the pencil core-shaped part can be inserted in the through core channel; the action part is a blade part or a sharp needle part.

[0024] The beneficial effects of the utility model are as follows:

[0025] (1) The multifunctional compass in the embodiment can not only realize the function of a compass, but also can realize the function of a vernier caliper by ingeniously arranging the vernier on the first compass leg, arranging a first measuring claw at one end of the first compass leg, arranging a second measuring claw at one end of the vernier, arranging a first length scale line on the first compass leg, and arranging a vernier scale line on the vernier, so that the multifunctional compass can realize the function of a vernier caliper, is multipurpose, and is convenient to store and carry.

[0026] (2) The magnifying glass assembly is arranged, so that the user can conveniently observe and magnify, and the function of the multifunctional compass is further expanded.

[0027] (3) The second compass leg of the multifunctional compass is arranged as a connecting pen sleeve and a double-head pen tool, and the two ends of the double-head pen tool can be a pen or a tool, so that the function of a double-head pen, a pen and a tool, and a double-head tool can be realized, and the user can select the type of the pen and the type of the tool according to the requirement, so that different functions can be realized.

[0028] (4) The pencil core-shaped tool is arranged, and the pencil core-shaped tool is used in cooperation with the inner core of the automatic propelling pencil, so that the functions of a knife and a sharp needle can be realized, the double-head pen tool or the multifunctional compass can be used as a holding part of the manual tool in the use process, and the function of the multifunctional compass is further expanded.

[0029] (5) the first leg of the compass can be used as a ruler and a wave ruler, and the second leg of the compass can be used as a ruler, further expanding the function of the multifunctional compass;

[0030] (6) an angle gauge is further arranged, and the angle gauge is cleverly arranged in structure, so that the multifunctional compass can measure an angle and draw a circle or a circular arc of a specific radius quickly, and the function of the multifunctional compass is further expanded. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 Fig. 1 is a structural schematic view of a multifunctional compass of the utility model (a first leg of the compass and a second leg of the compass are in a combined state), wherein (a) is a structural schematic view of the multifunctional compass when a vernier caliper assembly is stored, (b) is a structural schematic view of the multifunctional compass when the vernier caliper assembly is used, and (c) is another angle structural schematic view of the multifunctional compass when the vernier caliper assembly is used.

[0032] Figure 2 Fig. 2 is a structural schematic view of the multifunctional compass of the utility model (the first leg of the compass and the second leg of the compass are in an open state), wherein (a) is a structural schematic view of the multifunctional compass when an angle gauge is used (a vernier and a magnifying glass assembly have been removed), (b) is another angle structural schematic view of the multifunctional compass when the angle gauge is used (the vernier and the magnifying glass assembly have been removed), and (c) is a structural schematic view of the multifunctional compass when the angle gauge is stored.

[0033] Figure 3 Fig. 3 is a partial structural schematic view of the multifunctional compass of the utility model, wherein (a) is a partial structural schematic view of the multifunctional compass when a positioning needle assembly is in a reverse insertion state, and (b) is another angle schematic view of the partial structure of the multifunctional compass when the positioning needle assembly is in the reverse insertion state.

[0034] Figure 4 Fig. 4 is an exploded structural schematic view of the multifunctional compass of the utility model.

[0035] Figure 5 Fig. 5 is a structural schematic view of an angle gauge of the utility model, wherein (a) is a structural schematic view of one surface of the angle gauge, and (b) is a structural schematic view of another surface of the angle gauge.

[0036] Figure 6 Fig. 6 is a structural schematic view of a magnifying glass assembly of the utility model, wherein (a) is a structural schematic view of the magnifying glass assembly when a magnifying glass is stored, (b) is another angle structural schematic view of the magnifying glass assembly when the magnifying glass is stored, and (c) is a structural schematic view of the magnifying glass assembly when the magnifying glass is opened.

[0037] Figure 7 Fig. 7 is a structural schematic view of a double-head pen tool of the utility model.

[0038] Figure 8 The structure schematic view of the pencil core-shaped tool of the utility model.

[0039] Figure 9 The structure schematic view of the pencil core-shaped tool of the utility model.

[0040] Figure 10 The structure schematic view of the pressing assembly of the utility model.

[0041] Figure 11 The structure schematic view of the double-head pen tool of the utility model, wherein (a) is the structure schematic view of the double-head pen tool when the pressing convex block is matched with the first control step, (b) is the enlarged structure schematic view of A in (a), (c) is the structure schematic view of the double-head pen tool when the pressing convex block is matched with the third control step, and (d) is the structure schematic view of the double-head pen tool when the pressing convex block is located between the first control step and the second control step.

[0042] Figure 12 The structure schematic view of the double-head pen tool of the utility model, wherein (a) is the structure schematic view of the double-head pen tool when the pressing convex block is matched with the first control step, (b) is the enlarged structure schematic view of A in (a), (c) is the structure schematic view of the double-head pen tool when the pressing convex block is matched with the third control step, and (d) is the structure schematic view of the double-head pen tool when the pressing convex block is located between the first control step and the second control step.

[0043] Figure 13 The structure schematic view of the double-head pen tool of the utility model, wherein (a) is the structure schematic view of the double-head pen tool when the pressing convex block is matched with the first control step, (b) is the enlarged structure schematic view of A in (a), (c) is the structure schematic view of the double-head pen tool when the pressing convex block is matched with the third control step, and (d) is the structure schematic view of the double-head pen tool when the pressing convex block is located between the first control step and the second control step.

[0044] Figure 14 The structure schematic view of the double-head pen tool of the utility model, wherein (a) is the structure schematic view of the double-head pen tool when the pressing convex block is matched with the first control step, (b) is the enlarged structure schematic view of A in (a), (c) is the structure schematic view of the double-head pen tool when the pressing convex block is matched with the third control step, and (d) is the structure schematic view of the double-head pen tool when the pressing convex block is located between the first control step and the second control step.

[0045] Explanation of reference signs:

[0046] 10 - compass connecting seat; 101 - containing groove; 11 - first compass leg; 111 - first plane; 112 - first linear edge; 113 - wavy edge; 114 - first length scale; 115 - mounting groove; 117 - second length scale; 12 - second compass leg; 121 - second plane; 123 - third length scale; 13 - positioning needle assembly; 131 - positioning needle; 132 - mounting seat; 133 - fixing ring; 14 - connecting pen sleeve; 141 - first fixing hole; 15 - pen clip; 16 - rubber; 2 - automatic pencil inner core; 21 - hollow core barrel; 211 - core passing channel; 212 - storage cavity; 22 - inner core tube; 23 - clamping jaw piece; 24 - third spring; 25 - retaining ring; 26 - positioning sleeve; 261 - limiting piece; 262 - positioning step; 263 - detent ring; 27 - core sleeve; 28 - tail plug; 3 - double-headed pen tool; 30 - storage hole; 31 - intermediate hollow pen barrel; 311 - second fixing hole; 32 - pen head; 321 - clamping groove; 33 - pressing assembly; 331 - movable cylinder; 332 - pressing lug; 333 - partition plate; 341 - pressing lead; 342 - screwdriver; 3441 - battery; 3442 - conductive spring; 3443 - zero line; 3444 - lamp bead; 3445 - metal sheet; 351 - first control step; 352 - second control step; 353 - third control step; 354 - fourth control step; 36 - first spring; 37 - second spring; 38 - through hole; 4 - pencil core-shaped tool; 41 - pencil core-shaped part; 42 - acting part; 421 - blade part; 422 - sharp needle part; 5 - protractor; 51 - first arc-shaped edge; 52 - second arc-shaped edge; 53 - second linear edge; 54 - angle scale; 55 - fourth length scale; 56 - radius scale; 57 - radius length reference value; 58 - first fixing column; 59 - second fixing column; 71 - threaded fastener; 711 - mounting hole; 72 - nut; 8 - vernier caliper assembly, 81 - vernier scale; 82 - fastening screw; 83 - first outer measuring jaw; 84 - first inner measuring jaw; 85 - second outer measuring jaw; 86 - second inner measuring jaw; 87 - measuring needle; 88 - vernier scale; 89 - driving block; 9 - magnifying glass assembly; 91 - plug-in sleeve; 92 - magnifying glass; 93 - mounting cylinder; 94 - illuminating lamp; 95 - control switch. DETAILED DESCRIPTION

[0047] For the convenience of those skilled in the art, the present application will be further described below in conjunction with the embodiments and drawings, and the content mentioned in the embodiments is not a limitation of the present application.

[0048] As Figures 1 to 14As shown, a multifunctional compass includes a compass connecting seat 10, and a first compass leg 11 and a second compass leg 12 rotationally connected with the compass connecting seat 10; further includes a vernier caliper assembly 8, the vernier caliper assembly 8 includes a vernier scale 81, the vernier scale 81 movably sleeved on the first compass leg 11, the first compass leg 11 is provided with at least one first measuring claw at one end close to the compass connecting seat 10, the vernier scale 81 is provided with at least one second measuring claw at one end close to the compass connecting seat 10, the number of the second measuring claw is the same as that of the first measuring claw, and the second measuring claw corresponds to the first measuring claw one by one. The first compass leg 11 is provided with a first length scale line 114, and the vernier scale 81 is provided with a vernier scale line 88 matched with the first length scale line 114. Of course, in other embodiments, the vernier scale 81 and the first measuring claw can also be provided on the second compass leg, which will not be described here. Specifically, the first length scale line 114 is arranged on the side surface of the first compass leg 11 away from the second compass leg 12, and the middle part of the vernier scale 81 is provided with a through hole to facilitate the user to read the measurement value of the first length scale line 114.

[0049] The multifunctional compass in the embodiment not only realizes the function of the compass, but also realizes the function of the vernier caliper by movably sleeving the vernier scale 81 on the first compass leg 11, providing the first measuring claw at one end of the first compass leg 11, providing the second measuring claw at one end of the vernier scale 81, providing the first length scale line 114 on the first compass leg 11, and providing the vernier scale line 88 on the vernier scale 81. The user can realize the functions of the compass and the vernier caliper by carrying the multifunctional compass in the embodiment, which is convenient to store and carry.

[0050] Further, as shown in Figure 1 、 3 -4, the first compass leg 11 is provided with two first measuring claws at one end close to the compass connecting seat 10, the two first measuring claws are respectively a first outer measuring claw 83 and a first inner measuring claw 84, the vernier scale 81 is provided with two second measuring claws at one end close to the compass connecting seat 10, the two second measuring claws are respectively a second outer measuring claw 85 and a second inner measuring claw 86, the first outer measuring claw 83 and the second outer measuring claw 85 cooperate, and the first inner measuring claw 84 and the second inner measuring claw 86 cooperate; the vernier scale 81 is provided with a fastening screw 82 and a driving block 89 on both sides. In the embodiment, two first measuring claws and two second measuring claws are provided to facilitate the measurement of the external and internal dimensions of the object.

[0051] Further, as shown in Figure 1 , 3 -4, the first compass leg 11 is provided with a positioning needle assembly 13 at one end away from the compass connecting base 10, the positioning needle assembly 13 comprises a positioning needle 131 and a mounting seat 132, the positioning needle 131 is arranged on the mounting seat 132, and the first compass leg 11 is provided with a mounting groove 115 at one end away from the compass connecting base 10, and the mounting seat 132 is detachably inserted into the mounting groove 115.

[0052] Further, as shown in Figure 1 , 3 -4, the vernier 81 is connected with a measuring needle 87 at one end away from the compass connecting base 10, one side of the mounting seat 132 is provided with a fixing ring 133, and one end of the measuring needle 87 away from the vernier 81 is movably arranged in the fixing ring 133.

[0053] In this embodiment, the measuring needle 87 is arranged, so that the vernier caliper assembly 8 can also measure the depth of the object; and the fixing ring 133 is arranged in the positioning needle assembly 13, one end of the measuring needle 87 away from the vernier 81 is movably arranged in the fixing ring 133, the measuring needle 87 is limited by the fixing ring 133, so as to prevent the measuring needle 87 from deviating during measurement, and ensure the accuracy of measurement; in addition, since the measuring needle 87 needs to be inserted into the hole of the object when measuring the depth, when the size of the hole is small, the positioning needle 131 may hinder the measuring needle 87 from entering the hole, since the mounting seat 132 is detachably inserted into the mounting groove 115, at this time, as shown in Figure 3 , the positioning needle assembly 13 can be detached and reversely inserted into the mounting groove 115, in this way, the measuring needle 87 can still be arranged in the fixing ring 133 to ensure the moving direction, and the positioning needle 131 does not hinder the measuring needle 87 from extending into the hole.

[0054] Further, the side of the first compass leg 11 opposite to the second compass leg 12 is provided with a first plane 111, and the side of the second compass leg 12 opposite to the first compass leg 11 is provided with a second plane 121, and the first plane 111 and the second plane 121 can be attached to each other; the first plane 111 is provided with a second length scale line 117, and the second plane 121 is provided with a third length scale line 123. Specifically, the side of the first compass leg 11 opposite to the first plane 111 is a circular arc surface, and the side of the second compass leg 12 opposite to the second plane 121 is also a circular arc surface, so that when the first plane 111 and the second plane 121 are attached to each other, the first compass leg 11 and the second compass leg 12 combine to form a cylinder, facilitating the use of the entire multifunctional compass as a pen. In this embodiment, by providing length scale lines on the first plane 111 and the second plane 121, the first compass leg 11 and the second compass leg 12 can be used as a ruler, further expanding the function of the multifunctional compass.

[0055] Further, the side of the second compass leg 12 opposite to the first compass leg 11 is provided with a receiving hole 30, the positioning needle 131 is arranged at an angle between the first compass leg 11 and the positioning needle 131, and the end of the positioning needle 131 away from the compass connecting base 10 is arranged towards the second compass leg 12, and the positioning needle 131 can be inserted into the receiving hole 30. On this basis, the positioning needle 131 is inserted into the receiving hole 30, preventing the first compass leg 11 and the second compass leg 12 from separating during use as a pen and preventing the positioning needle 131 from injuring the user, ensuring safety of use.

[0056] Further, as shown in Figure 3 , one side of the first compass leg 11 is a first straight side 112, and the other side is a wavy side 113. In this embodiment, by providing the first straight side 112 and the wavy side 113 in the first compass leg 11, the first compass leg 11 can be used as a ruler and a wavy ruler, further expanding the function of the multifunctional compass.

[0057] Further, as shown in Figures 1-2 , 4, 6, the multifunctional compass further comprises a magnifying glass assembly 9, and the magnifying glass assembly 9 is connected with any one of the compass connecting base 10, the first compass leg 11, the second compass leg 12 or the vernier caliper assembly 8. Specifically, the magnifying glass assembly 9 is detachably connected with the vernier caliper assembly 8, and when the magnifying glass assembly 9 is needed to be used, it can be detached from the vernier caliper assembly 8 for use. In this embodiment, by providing the magnifying glass assembly 9, the function of the multifunctional compass is further expanded, facilitating the user to observe the object in a magnified manner.

[0058] Further, as shown in Figure 6 , the magnifying glass assembly 9 comprises a plug-in sleeve 91 and a magnifying glass 92 rotatably connected with the plug-in sleeve 91, and the plug-in sleeve 91 is detachably sleeved on the first measuring jaw and / or the second measuring jaw. Specifically, the plug-in sleeve 91 is detachably sleeved on the first outer measuring jaw 83 and the second outer measuring jaw 85, so that the multifunctional compass is more compact in storage, and the plug-in sleeve 91 of the magnifying glass assembly 9 is sleeved on the first outer measuring jaw 83 and the second outer measuring jaw 85, so as to prevent the vernier caliper 81 from sliding on the first compass leg 11 during carrying, and reduce the probability of damage of the vernier caliper assembly 8.

[0059] Further, as shown in Figure 6 , the side of the plug-in sleeve 91 away from the magnifying glass 92 is provided with an illuminating module, the illuminating module comprises a mounting cylinder 93 connected with the plug-in sleeve 91, the mounting cylinder 93 contains a battery, one end of the mounting cylinder 93 is provided with an illuminating lamp 94 connected with the battery, and the mounting cylinder 93 is provided with a control switch 95. In the embodiment, the illuminating lamp 94 is arranged, so that the magnifying glass 92 can be used for magnifying observation in insufficient light.

[0060] Further, as shown in Figure 2 , 4 , the multifunctional compass further comprises a protractor 5, one surface of the protractor 5 is provided with an angle scale line 54, and the protractor 5 is detachably connected with at least one of the compass connecting seat 10, the first compass leg 11 or the second compass leg 12. In the embodiment, the protractor is arranged, so that the functions of angle measurement and angle drawing can be realized, and the functions of the multifunctional compass are further expanded.

[0061] Further, as shown in Figure 5 , one side edge of the protractor 5 is a first circular arc edge 51, the other side edge of the protractor 5 is composed of a second circular arc edge 52 and a second straight line edge 53 connected with each other, the surface of the protractor 5 provided with the angle scale line 54 is provided with a fourth length scale line 55 at a position close to the second straight line edge 53, and the other surface of the protractor 5 is provided with a radius scale line 56 and a radius length contrast value 57 corresponding to the radius scale line 56. In the embodiment, the second straight line edge 53 and the fourth length scale line 55 are arranged, so that the protractor can also be used as a ruler; and the radius scale line 56 and the radius length contrast value 57 are arranged, so that the user can quickly draw a circle or a circular arc with a specific radius by using the protractor and the compass.

[0062] Further, as shown in Figures 1-4 , the multifunctional compass further comprises a threaded fastener 71 and a nut 72, the threaded fastener 71 passes through the compass connecting seat 10, the first compass leg 11 and the second compass leg 12 and is threadedly connected with the nut 72. In this embodiment, by adjusting the threaded fastener 71 and the nut 72, the tightness between the first compass leg 11 and the second compass leg 12 is adjusted.

[0063] In actual use, when the angle needs to be measured, the protractor is removed and the angle is measured by using the angle scale 54; and since the protractor 5 is further provided with a radius scale 56 and radius length reference values 57, as shown in (b) of Figure 5 , the radius scale 56 has A, B, C, D, E, F, etc., and the radius length reference values 57 indicate the radius values corresponding to each radius scale 56, so that a circle or an arc with a specific radius can be quickly drawn without the aid of an additional ruler. In specific operation, the protractor is connected with the second compass leg 12, as shown in (b) of Figure 2 , according to the size of the required radius, for example, when a circle or an arc with a radius of 50 mm needs to be drawn, according to the radius length reference values 57, it can be known that the first compass leg 11 should be aligned with the "J" line in the radius scale 56, after the alignment, the threaded fastener 71 and the nut 72 are adjusted to lock the first compass leg 11 and the second compass leg 12, at this time, the circle drawing operation is performed, and a circle or an arc with a radius of 50 mm can be drawn, so that the circle or arc drawing operation is simple and fast. Of course, when the radius of the required circle or arc is not in the radius length reference values 57, the circle or arc can be drawn according to the conventional circle drawing method. When the protractor 5 is not needed to be used, the protractor 5 needs to be stored, at this time, the protractor 5 is connected with the second compass leg 12 in the vertical direction, as shown in (c) of Figure 1 , so that the overall volume of the multifunctional compass is small, and the multifunctional compass is convenient to store and carry.

[0064] Further, as shown in Figure 2 , 5 , at least two first fixing columns 58 are arranged on one surface of the protractor 5, at least two second fixing columns 59 are arranged on another surface of the protractor 5, the second compass leg 12 is provided with a first fixing hole 141 matched with the first fixing column 58 and a second fixing hole 311 matched with the second fixing column 59. In this embodiment, by matching the fixing column and the fixing hole, the detachable connection of the protractor 5 and the multifunctional compass is realized. When a circle or an arc with a specific radius needs to be drawn, the second fixing column 59 is connected with the second fixing hole 311, as shown in (b) of Figure 2(b) shown in the figure; preferably, a third plane 312 is arranged on the second compass leg 12 at a position corresponding to the second fixed hole 311, so that when the second fixed column 59 is connected with the second fixed hole 311, the protractor 5 can be attached to the third plane 312, ensuring that the protractor 5 is installed stably; when the protractor 5 needs to be stored, the first fixed column 58 is connected with the first fixed hole 141 on the second compass leg 12, and the protractor 5 can be folded into the first compass leg 11, as shown in Figure 2 (c) shown in the figure.

[0065] Further, as shown in Figures 1-4 , the multifunctional compass further comprises a pen holder 15 and a rubber 16, the pen holder 15 is arranged on the first compass leg 11 close to one end of the compass connecting seat 10, and the top of the compass connecting seat 10 is provided with a containing groove 101, and the rubber 16 is arranged in the containing groove 101. In this embodiment, by arranging the pen holder 15, the multifunctional compass can hold the clothes or notebook of the user, which is convenient for carrying; by arranging the rubber 16, it is convenient to erase the pencil handwriting.

[0066] Further, as shown in Figure 2 , 4 , 7, the second compass leg 12 comprises a connecting pen sleeve 14 and a double-headed pen tool 3 which is detachably inserted with the connecting pen sleeve 14, one end of the connecting pen sleeve 14 away from the double-headed pen tool 3 is rotationally connected with the compass connecting seat 10, one end of the double-headed pen tool 3 is a pen or a tool piece, and the other end is also a pen or a tool piece, and the tool piece is any one of a pencil core-shaped tool 4, a screwdriver 342, a cutting knife, a needle-shaped tool or a lamp assembly.

[0067] In this embodiment, by arranging the second compass leg 12 of the multifunctional compass as the connecting pen sleeve 14 and the double-headed pen tool 3, and the two ends of the double-headed pen tool 3 can be pens or tool pieces, the functions of double-headed pen, one pen and one tool, and double-headed tool can also be realized, and the user can specifically select the type of pen and the type of tool piece according to the needs, so as to meet different use requirements. In this embodiment, by arranging the double-headed pen tool in the compass, the pen and / or tool are ingeniously combined in the compass, which not only expands the function of the compass, but also is convenient for storage and carrying.

[0068] Further, as shown in Figure 7 , 11As shown in Fig. 14, the double-head pen tool 3 further comprises a middle hollow pen barrel 31, and pen heads 32 detachably connected at both ends of the middle hollow pen barrel 31, the middle part of the middle hollow pen barrel 31 is provided with a pressing assembly 33, and the side wall of the middle hollow pen barrel 31 is provided with a through hole 38 matched with the pressing assembly 33, any one of the pressing automatic pencil inner core 2, the pressing lead core 341, the screwdriver 342, the cutting knife, the needle-shaped tool or the lamp assembly is installed between one of the pen heads 32 and the pressing assembly 33 and the first spring 36, and any one of the pressing automatic pencil inner core 2, the pressing lead core 341, the screwdriver 342, the cutting knife, the needle-shaped tool or the lamp assembly is installed between the other pen head 32 and the pressing assembly 33 and the second spring 37. Specifically, the pen head 32 and the middle hollow pen barrel 31 are detachably connected in a clamping manner; of course, in other embodiments, the pen head 32 and the middle hollow pen barrel 31 can also be connected in other detachable connection modes, such as threaded connection. Preferably, a plurality of clamping grooves 321 are arranged on the outer peripheral wall of the pen head 32, and a plurality of clamping protrusions matched with the clamping grooves are arranged on the inner side wall of the connecting pen sleeve 14, and the pen head 32 is inserted into the connecting pen sleeve 14 to realize the detachable insertion of the double-head pen tool 3 and the connecting pen sleeve 14.

[0069] In this embodiment, the pen head 32 is detachably arranged at both ends of the middle hollow pen barrel 31, so that the user can replace the pen or tool at both ends of the double-head pen tool 3 according to the actual use demand. And the pressing assembly 33 cooperates with the first spring 36 and the second spring 37 to control the use state of the pen or tool at both ends of the double-head pen tool 3, that is, the pressing assembly 33 plays a switching role; when the pressing assembly 33 moves to compress the first spring 36 and the second spring 37 is not compressed, the pen or tool at one end of the double-head pen tool 3 protrudes outside the corresponding pen head 32 or is in an activated state, while the pen or tool at the other end is retracted into the corresponding pen head 32 or is in a closed state; when the pressing assembly 33 moves to compress the second spring 37 and the first spring 36 is not compressed, the pen or tool at one end of the double-head pen tool 3 is retracted into the corresponding pen head 32 or is in a closed state, while the pen or tool at the other end protrudes outside the corresponding pen head 32 or is in an activated state; when the first spring 36 is not compressed and the second spring 37 is not compressed, the pen or tool at both ends of the double-head pen tool 3 is retracted into the corresponding pen head 32 or is in a closed state.

[0070] Further, the pen is any one of a pencil, a mechanical pencil, a fountain pen, a ballpoint pen, an oil-based pen, a water-based pen, or a neutral pen; the pressing refill 341 is any one of a pressing fountain pen refill, a pressing ballpoint pen refill, a pressing oil-based pen refill, a pressing water-based pen refill, or a pressing neutral pen refill. Of course, in other embodiments, other types of pen or pressing refill 341 can be selected according to actual needs, which are not listed one by one here.

[0071] Further, as shown in Figure 8 the pressing automatic pencil inner core 2 includes a hollow barrel 21, one end inside the hollow barrel 21 is provided with an inner core tube 22, a storage cavity 212 is arranged between the inner wall of the hollow barrel 21 and the outer wall of the inner core tube 22, the storage cavity 212 is annular, and the storage cavity 212 is used to store a plurality of pencil leads and / or a plurality of pencil lead-shaped tools 4. Again, because the length of the inner core tube 22 is less than the length of the hollow barrel 21, the end of the hollow barrel 21 away from the pen tip has a larger space for accommodating the pencil lead-shaped tool 4; the end of the hollow barrel 21 close to the inner core tube 22 is provided with an elastic clamping assembly, the inner core tube 22 and the elastic clamping assembly are provided with a core passing channel 211 therethrough, the pencil lead or pencil lead-shaped tool 4 can be inserted in the core passing channel 211, and the elastic clamping assembly can be switched between a state of clamping the pencil lead or pencil lead-shaped tool 4 and a state of releasing the pencil lead or pencil lead-shaped tool 4; the end of the hollow barrel 21 away from the inner core tube 22 is detachably provided with a tail plug 28. Preferably, as shown in Figure 9 the pencil lead-shaped tool 4 includes a pencil lead-shaped part 41 and an action part 42 provided at one end of the pencil lead-shaped part 41, and the pencil lead-shaped part 41 can be inserted in the core passing channel 211; the action part 42 is a blade part 421 or a sharp needle part 422; wherein the blade part 421 can be provided with a blade at its top, a blade at its side, or a blade at other parts. Of course, in some other embodiments, the action part 42 can also be other forms of hand tools, such as a screwdriver, a wrench, etc., which are not listed one by one here.

[0072] In the embodiment, the pencil core-shaped tool 4 is arranged and used in cooperation with the pressing automatic pencil inner core 2 to realize the functions of the cutting knife and the sharp needle, and the double-head pen tool 3 or the whole multifunctional compass can be used as the holding part of the manual tool in the use process, thereby further expanding the function of the multifunctional compass. The inner core tube 22 is arranged in the pressing automatic pencil inner core 2 to form the storage cavity 212 separated from the core passing channel 211 in the pressing automatic pencil inner core 2, and the pencil core and the pencil core-shaped tool 4 can be inserted into the storage cavity 212, so that a plurality of pencil core-shaped tools 4 can be stored in the hollow core barrel 21, thereby facilitating the storage of the plurality of pencil core-shaped tools 4, preventing loss, and facilitating the user to carry and use. On this basis, in order to ensure that the first spring 36 or the second spring 37 can be compressed under the pressing force, the outer diameter of the hollow core barrel 21 is greater than the outer diameter of the elastic clamping assembly, so that the hollow core barrel 21 generates extrusion force on the first spring 36 under the action of the pressing force, thereby driving the first spring 36 to be compressed, so that the pressing automatic pencil inner core 2 can be smoothly protruded from the corresponding pen head 32 for use.

[0073] In actual use, when the function of a certain manual tool is needed, such as the function of the cutting knife, the pencil core-shaped tool 4 with the function of the cutting knife is inserted into the pressing automatic pencil inner core 2 to form the cutting knife, wherein the double-head pen tool 3 or the whole multifunctional compass is used as the holding part, and the user holds the double-head pen tool 3 or the whole multifunctional compass to operate, thereby realizing the function of the cutting knife. When the function of other manual tools is needed, the pencil core-shaped tool 4 with the corresponding function is inserted into the pressing automatic pencil inner core 2 to form the manual tool with the corresponding function. When the function of the manual tool is not needed, the pencil core-shaped tool 4 can be taken out of the pressing automatic pencil inner core 2, and the pencil core of the automatic pencil in the prior art is inserted into the pressing automatic pencil inner core 2 to realize the function of the pencil.

[0074] Further, as Figure 8As shown, the elastic clamping assembly comprises a clamping jaw 23, a third spring 24, a binding ring 25, a positioning sleeve 26 and a core sleeve 27. The clamping jaw 23 is arranged at one end of the hollow core barrel 21 close to the inner core tube 22. The binding ring 25 is movably arranged outside the clamping jaw 23. The clamping jaw 23 at the end away from the hollow core barrel 21 and the binding ring 25 are movably arranged inside the positioning sleeve 26. The positioning sleeve 26 is provided with a limiting piece 261 at one end close to the hollow core barrel 21. The positioning sleeve 26 is provided with the core sleeve 27 at one end away from the hollow core barrel 21. The positioning sleeve 26 is provided with a positioning step 262 at the middle position inside. The third spring 24 is movably arranged outside the clamping jaw 23 between the positioning sleeve 26 and the hollow core barrel 21. The positioning sleeve 26 is further provided with a clamping ring 263. The inner hole diameter of the clamping ring 263 is slightly smaller than the diameter of the pencil core and the diameter of the pencil core-shaped part 41 respectively.

[0075] In the embodiment, the specific structure of the elastic clamping assembly in the inner core 2 of the automatic pencil is specifically limited. Under the action of external force, the hollow core barrel 21 drives the clamping jaw 23 and the binding ring 25 to move forward (toward the direction close to the pencil tip). The third spring 24 is compressed. When the binding ring moves to the position of the positioning step 262, the binding ring 25 cannot continue to move forward with the hollow core barrel 21 and the clamping jaw 23 due to the blockage of the positioning step 262. The clamping jaw 23 is separated from the binding ring 25. Since the matching surface between the clamping jaw 23 and the binding ring 25 is a tapered surface, the multiple clamping jaws in the clamping jaw 23 separate from each other when the clamping jaw 23 separates from the binding ring 25. At this time, the pencil core or the pencil core-shaped tool 4 is in a state of being released. When the external force is removed, the third spring 24 returns, thereby driving the hollow core barrel 21 and the clamping jaw 23 to move backward (toward the direction away from the pencil tip). When the clamping jaw 23 retreats into the binding ring 25, the binding ring 25 is driven to move backward. When the binding ring 25 moves to the position of the limiting piece 261, the binding ring 25 stops moving, thereby limiting the clamping jaw 23 and the hollow core barrel 21 from continuing to retreat. Under the constraint of the binding ring 25, the multiple clamping jaws in the clamping jaw 23 approach each other. At this time, the pencil core or the pencil core-shaped tool 4 is in a state of being clamped. And by arranging the clamping ring 263, when the pencil core-shaped tool 4 is in a state of being used without being pressed by the clamping jaw 23 in the inner core 2 of the automatic pencil, the pencil core-shaped tool 4 will not fall downward due to gravity without external force, which is convenient for use.

[0076] Further, as shown in FIG. 4, the clamping jaw 23 is provided with a plurality of clamping jaws 231. The clamping jaw 231 is provided with a tapered surface 232. The tapered surface 232 is matched with the tapered surface of the binding ring 25. The tapered surface 232 is matched with the tapered surface of the clamping jaw 23. Figure 9As shown, the central axis of the action part 42 is arranged at an angle with the central axis of the pencil core part 41, and / or the cross-sectional area of the action part 42 is larger than the cross-sectional area of the pencil core part 41. Specifically, the central axis of the blade part 421 is arranged at an angle with the central axis of the pencil core part 41, because in actual use, the pencil core tool 4 with the blade part 421 has two use states, one of which is that the pencil core part 41 is pressed and clamped and fixed by the clamping jaw 23 in the automatic pencil inner core 2, at this time, the pencil core tool 4 with the blade part 421 is combined with the double-head pen tool 3 to form a hand knife, which is convenient for the user to cut the objects such as paper that are easy to cut. The other use state is that the pencil core part 41 is inserted into the clamping jaw 23 of the automatic pencil inner core 2, but the clamping jaw 23 is in an open state, that is, the clamping jaw 23 releases the pencil core part 41, and under the action of external force, the pencil core tool 4 can rotate 360° relative to the clamping jaw 23. At this time, when the user's hand holds the double-head pen tool 3 with the pencil core tool 4 that is not clamped and fixed and moves on the surface of the object to be cut (such as paper), the user can easily control the cutting direction of the blade part 421 by controlling the force direction of the hand, so as to form any required cutting curve on the surface of the object to be cut. Because the central axis of the blade part 421 is arranged at an angle with the central axis of the pencil core part 41, although the pencil core part 41 is not clamped and fixed, the blade part 421 will not retract into the automatic pencil inner core 2 under the action of external force. Of course, according to the specific operation of different types of pencil core tools 4 in actual use, in other embodiments, the central axis of the action part 42 can also be arranged coincidentally with the central axis of the pencil core part 41, such as Figure 9 As shown, the central axis of the sharp needle part 422 is arranged coincidentally with the central axis of the pencil core part 41. In addition, in this embodiment, by arranging the cross-sectional area of the action part 42 to be larger than the cross-sectional area of the pencil core part 41, on the one hand, when the pencil core tool 4 is in a use state that is not clamped and fixed by the clamping jaw 23 in the automatic pencil inner core 2, the action part 42 is prevented from retracting into the automatic pencil inner core under the action of external force; on the other hand, the strength of the action part 42 can be increased, and the service life can be prolonged.

[0077] Further, as shown in FIG. 6, Figure 10 , 11As shown in FIG. 14, the pressing assembly 33 comprises a movable cylinder 331, and a pressing protrusion 332 arranged on the outer wall of the movable cylinder 331, the inside of the movable cylinder 331 is provided with a partition plate 333, the pressing protrusion 332 passes through the through hole 38 and extends to the outside of the intermediate hollow pen barrel 31, the hole wall of the through hole 38 is provided with a plurality of control steps matched with the pressing protrusion 332. In this embodiment, the two ends of the movable cylinder 331 are respectively inserted with any one of the pressing automatic pencil inner core 2, the pressing lead 341, the screwdriver, the cutting knife, the needle tool or the lamp assembly, when pressing the pressing assembly 33 to one end of the double-head pen tool 3, the partition plate 333 exerts force on the pen or tool of the corresponding end to realize the switching of the two ends of the double-head pen tool; and by arranging a plurality of control steps matched with the pressing protrusion 332, the double-head pen tool 3 can be kept in the switched state. The pressing assembly 33 can reciprocate along the axial direction of the intermediate hollow pen barrel 31 and reciprocate rotate along the circumferential direction of the intermediate hollow pen barrel 31 under the action of external force.

[0078] Further, as shown in FIG. 14, the pressing assembly 33 comprises a movable cylinder 331, and a pressing protrusion 332 arranged on the outer wall of the movable cylinder 331, the inside of the movable cylinder 331 is provided with a partition plate 333, the pressing protrusion 332 passes through the through hole 38 and extends to the outside of the intermediate hollow pen barrel 31, the hole wall of the through hole 38 is provided with a plurality of control steps matched with the pressing protrusion 332. In this embodiment, the two ends of the movable cylinder 331 are respectively inserted with any one of the pressing automatic pencil inner core 2, the pressing lead 341, the screwdriver, the cutting knife, the needle tool or the lamp assembly, when pressing the pressing assembly 33 to one end of the double-head pen tool 3, the partition plate 333 exerts force on the pen or tool of the corresponding end to realize the switching of the two ends of the double-head pen tool; and by arranging a plurality of control steps matched with the pressing protrusion 332, the double-head pen tool 3 can be kept in the switched state. The pressing assembly 33 can reciprocate along the axial direction of the intermediate hollow pen barrel 31 and reciprocate rotate along the circumferential direction of the intermediate hollow pen barrel 31 under the action of external force. Figures 11-14As shown, the control steps include a first control step 351, a second control step 352, and a third control step 353, in particular, the first control step 351, the second control step 352, and the third control step 353 are staggered in the axial direction of the intermediate hollow pen barrel 31 and in the circumferential direction of the intermediate hollow pen barrel 31; in this embodiment, the double-head pen tool 3 is installed with the first spring 36 and the press automatic pencil inner core 2 at one end, and is installed with the second spring 37 and any one of the press pencil core 341, the screwdriver 342, the cutting knife, the needle-shaped tool, or the lamp assembly at the other end, and the cooperation between the press assembly 33 and the plurality of control steps is specifically described; when the press block 332 cooperates with the first control step 351, at this time the second spring 37 is compressed and the first spring 36 is not compressed, the press automatic pencil inner core 2 is retracted to the inside of the corresponding pen head 32 and the press pencil core 341, the screwdriver 342, the cutting knife, the needle-shaped tool, or the lamp assembly at the other end protrudes to the first position outside the corresponding pen head 32 or is in the starting state; when the press block 332 cooperates with the second control step 352, at this time the first spring 36 is compressed and the second spring 37 is not compressed, the press automatic pencil inner core 2 protrudes to the outside of the corresponding pen head 32 and the press pencil core 341, the screwdriver 342, the cutting knife, the needle-shaped tool, or the lamp assembly at the other end is retracted to the inside of the corresponding pen head 32 or is in the closed state, at this time, pressing the press assembly 33 along the vertical direction downward can apply force to the third spring 24 in the press automatic pencil inner core 20, that is, the function of pressing the press automatic pencil inner core 20 is realized; when the press block 332 cooperates with the third control step 353, at this time the third spring 24 is compressed on the basis of the compression of the first spring 36, and the second spring 37 is not compressed, on the basis of the press automatic pencil inner core 2 protruding to the outside of the corresponding pen head 32, the elastic clamping assembly is in a loose state, and the pencil core-shaped tool 4 inserted into the press automatic pencil inner core 2 can rotate 360° under the action of an external force, at this time, when the user's hand holds the double-head pen tool 3 so that the pencil core-shaped tool 4 that is not clamped passes over the surface of the cut object (such as paper folding), the user can easily control the cutting direction of the cutting edge part 421 by controlling the force direction of the hand, so as to facilitate forming any required cutting curve on the surface of the cut object; when the press block 332 is located between the first control step 351 and the second control step 352, at this time the first spring 36 is not compressed and the second spring 37 is also not compressed, the press automatic pencil inner core 2 is retracted to the inside of the corresponding pen head 32 and the press pencil core 341, the screwdriver 342, the cutting knife, the needle-shaped tool, or the lamp assembly at the other end is also retracted to the inside of the corresponding pen head 32 or is in the closed state.

[0079] Specifically, as shown in Figure 13 the lamp assembly can be a lighting lamp assembly or a laser lamp assembly, and can also be other types of lamp assemblies. The lamp assembly comprises, from the outside to the inside, a lamp bead 3444, a battery 3441, a conductive spring 3442, and a metal sheet 3445. The lamp bead 3444 is a lighting lamp bead or a laser lamp bead. The lamp bead 3444 is fixed at the end of the corresponding pen head 32 away from the middle hollow pen barrel 31. The light-emitting end of the lamp bead 3444 is arranged towards the outside of the double-head pen tool 3. The wiring end of the lamp bead 3444 is arranged towards the inside of the middle hollow pen barrel 31 and is connected with a zero line 3443 and a second spring 37. The second spring 37 is actually a live wire. The end of the zero line 3443 away from the lamp bead 3444 extends to the inside of the middle hollow pen barrel 31 and is connected with the metal sheet 3445. The end of the second spring 37 away from the lamp bead 3444 is arranged in a suspended manner. The metal sheet 3445 is fixedly connected with the pressing assembly 33. One end of the conductive spring 3442 is fixedly and conductively connected with the metal sheet 3445. The battery 3441 is inserted into the inside of the pressing assembly 33 and one end thereof is in contact with the conductive spring 3442. The battery 3441 is tightly fitted with the pressing assembly 33. After the battery 3441 is inserted into the inside of the pressing assembly 33, a certain force is needed to pull it out, so as to prevent the battery 3441 from shaking during use and to prevent the battery 3441 from being separated from the conductive spring 3442. When the pressing assembly 33 drives the battery 3441 to move towards the lamp bead 3444, the end of the battery 3441 will be in contact with the suspended end of the second spring 37 and compress the second spring 37. The battery 3441 is conductive with the lamp bead 3444. The lamp bead 3444 is started to realize the function of the lighting lamp or the laser lamp. When the pressing assembly 33 drives the battery 3441 to move away from the lamp bead 3444, the end of the battery 3441 will be separated from the suspended end of the second spring 37. The battery 3441 is not conductive with the lamp bead 3444. The lamp bead 3444 is turned off.

[0080] Further, as shown in Figure 14 the control steps further comprise a fourth control step 354. In this embodiment, the double-head pen tool 3 is provided with the first spring 36 and the pressing automatic pencil inner core 2 at one end, and is provided with the second spring 37 and any one of the screwdriver 342, the cutting knife, or the needle-shaped tool at the other end. The cooperation between the pressing assembly 33 and the fourth control step 354 is specifically described. When the pressing protrusion 332 cooperates with the fourth control step 354, the pressing automatic pencil inner core 2 is retracted to the inside of the corresponding pen head 32 and the screwdriver 342, the cutting knife, or the needle-shaped tool protrudes to the second position outside the corresponding pen head 32. The distance between the second position and the first control step 351 is greater than the distance between the first position and the first control step 351.

[0081] Specifically, as shown in Figure 14 the end of the double-head pen tool 3 is provided with a pressing automatic pencil inner core 2, and the other end is provided with a screwdriver 342. Since the distance from the first position to the end of the corresponding pen head 32 is about 3 mm (referring to the distance from the pen tip end of the pressing pencil core 341 to the end of the corresponding pen head 32 when the pressing pencil core 341 protrudes to the outside of the corresponding pen head 32), the protruding distance to the first position is not enough for the screwdriver 342, the cutting knife or the needle-shaped tool to be used. Therefore, the fourth control step 354 is arranged in the embodiment. When the pressing block 332 cooperates with the fourth control step 354, the second spring 37 is further compressed, so that the screwdriver 342, the cutting knife or the needle-shaped tool protrudes outward to the second position, so as to facilitate the use of the screwdriver 342, the cutting knife or the needle-shaped tool.

[0082] Further, as shown in Figures 1-2 , 4, 7, the receiving hole 30 is specifically two and is arranged at the two ends of the side opposite to the first compass leg 11 of the double-head pen tool 3. On this basis, in order to facilitate the positioning needle 131 to be inserted into the receiving hole 30, three clamping grooves 321 are arranged on the outer peripheral wall of the pen head 32, and three clamping protrusions cooperating with the clamping grooves are arranged on the inner side wall of the connecting pen sleeve 14. When the multifunctional compass needs to be converted from the compass state to the pen state, the double-head pen tool 3 is first pulled out of the connecting pen sleeve 14, then a small part of one pen head 32 of the double-head pen tool 3 is inserted into the connecting pen sleeve 14, and the first compass leg 11 and the second compass leg 12 are rotated to make the first plane 111 and the second plane 121 abut each other, then the double-head pen tool 3 is continuously pushed towards the connecting pen sleeve 14, the positioning needle 131 is inserted into the receiving hole 30, and the double-head pen tool 3 is continuously pushed until it cannot be pushed. At this time, one or two clamping grooves 321 of the corresponding pen head 32 inserted into the connecting pen sleeve 14 cooperate with the clamping protrusions, that is, a part of the corresponding pen head 32 is located outside the connecting pen sleeve 14, and the pen state can be converted. When the multifunctional compass needs to be converted from the pen state to the compass state, the double-head pen tool 3 is first pulled out of the connecting pen sleeve 14, at this time the positioning needle 131 is pulled out of the receiving hole 30, the first compass leg 11 and the second compass leg 12 are rotated to make the first plane 111 and the second plane 121 separate from each other, one pen head 32 of the double-head pen tool 3 is completely inserted into the connecting pen sleeve 14, and the three clamping grooves 321 in the corresponding pen head 32 inserted into the connecting pen sleeve 14 all cooperate with the three clamping protrusions, so that the compass state can be converted.

[0083] The above-described embodiments only express some implementation manners of the present application, which are described in more detail and in more specifically, but cannot be understood as the limitation of the patent scope of the present application. It should be noted that, for the ordinary skilled in the art, without departing from the concept of the present application, some modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A multifunctional compass, comprising a compass connecting seat (10), and a first compass leg (11) and a second compass leg (12) rotatably connected to the compass connecting seat (10); characterized in that: It also includes a vernier caliper assembly (8), which includes a vernier scale (81). The vernier scale (81) is movably mounted on the first compass leg (11). The first compass leg (11) is provided with at least one first measuring jaw at one end near the compass connecting seat (10). The vernier scale (81) is provided with at least one second measuring jaw at one end near the compass connecting seat (10). The number of second measuring jaws is the same as the number of first measuring jaws, and the second measuring jaws correspond to and cooperate with the first measuring jaws one by one. The first compass leg (11) is provided with a first length scale line (114), and the vernier scale (81) is provided with a vernier scale line (88) that cooperates with the first length scale line (114).

2. A multifunctional compass according to claim 1, characterized in that: Two first measuring jaws are provided at the end of the first compass support leg (11) near the compass connecting seat (10). The two first measuring jaws are a first outer measuring jaw (83) and a first inner measuring jaw (84). Two second measuring jaws are provided at the end of the vernier scale (81) near the compass connecting seat (10). The two second measuring jaws are a second outer measuring jaw (85) and a second inner measuring jaw (86). The first outer measuring jaw (83) and the second outer measuring jaw (85) cooperate with each other, and the first inner measuring jaw (84) and the second inner measuring jaw (86) cooperate with each other. Fastening screws (82) and driving blocks (89) are respectively provided on both sides of the vernier scale (81).

3. A multifunctional compass according to claim 1, characterized in that: A positioning pin assembly (13) is provided at the end of the first compass support leg (11) away from the compass connecting seat (10). The positioning pin assembly (13) includes a positioning pin (131) and a mounting seat (132). The positioning pin (131) is disposed on the mounting seat (132). A mounting groove (115) is provided at the end of the first compass support leg (11) away from the compass connecting seat (10). The mounting seat (132) is detachably inserted into the mounting groove (115).

4. A multifunctional compass according to claim 3, characterized in that: The vernier scale (81) is connected to a measuring needle (87) at one end away from the compass connector (10). A fixing ring (133) is provided on one side of the mounting base (132), and the measuring needle (87) at one end away from the vernier scale (81) is movably inserted into the fixing ring (133).

5. A multifunctional compass according to claim 3, characterized in that: The side of the first compass leg (11) opposite to the second compass leg (12) is set as a first plane (111), and the side of the second compass leg (12) opposite to the first compass leg (11) is set as a second plane (121). The first plane (111) and the second plane (121) can fit together. A second length scale line (117) is provided on the first plane (111), and a third length scale line (123) is provided on the second plane (121).

6. A multifunctional compass according to claim 5, characterized in that: The second compass leg (12) is provided with a storage hole (30) on the side opposite to the first compass leg (11). The positioning pin (131) is set at an angle to the first compass leg (11), and the end of the positioning pin (131) away from the compass connector (10) is set towards the second compass leg (12). The positioning pin (131) can be inserted into the storage hole (30).

7. A multifunctional compass according to claim 5, characterized in that: One side of the first compass leg (11) is a straight edge (112), and the other side is a wavy edge (113).

8. A multifunctional compass according to claim 1, characterized in that: The multifunctional compass also includes a magnifying glass assembly (9), which is connected to any one of the compass connector (10), the first compass leg (11), the second compass leg (12), or the vernier caliper assembly (8).

9. A multifunctional compass according to claim 8, characterized in that: The magnifying glass assembly (9) includes a plug sleeve (91) and a magnifying glass (92) rotatably connected to the plug sleeve (91). The plug sleeve (91) is detachably fitted onto the first measuring jaw and / or the second measuring jaw.

10. A multifunctional compass according to claim 9, characterized in that: An illumination module is provided on the side of the plug sleeve (91) away from the magnifying glass (92). The illumination module includes a mounting cylinder (93) connected to the plug sleeve (91), a battery is installed in the mounting cylinder (93), an illumination lamp (94) connected to the battery is provided at one end of the mounting cylinder (93), and a control switch (95) is provided on the mounting cylinder (93).

11. A multifunctional compass according to claim 1, characterized in that: The multifunctional compass also includes a protractor (5), one surface of which is provided with angle scale lines (54); the protractor (5) can be detachably connected to at least one of the compass connector (10), the first compass leg (11) or the second compass leg (12).

12. A multifunctional compass according to claim 11, characterized in that: One side of the protractor (5) is a first arc-shaped side (51), and the other side of the protractor (5) is composed of a second arc-shaped side (52) and a second straight side (53) connected to each other. On the surface of the protractor (5) where the angle scale line (54) is provided, a fourth length scale line (55) is provided near the second straight side (53). On the other surface of the protractor (5), a radius scale line (56) and a radius length comparison value (57) corresponding to the radius scale line (56) are provided.

13. A multifunctional compass according to claim 12, characterized in that: The multi-functional compass also includes a threaded fastener (71) and a nut (72), the threaded fastener (71) passing through the compass connector (10), the first compass leg (11) and the second compass leg (12) and being threadedly connected to the nut (72).

14. A multifunctional compass according to claim 1, characterized in that: The multifunctional compass also includes a pen clip (15) and an eraser (16). The pen clip (15) is located at one end of the first compass leg (11) near the compass connecting seat (10). The top of the compass connecting seat (10) is provided with a receiving groove (101), and the eraser (16) is located in the receiving groove (101).

15. A multifunctional compass according to any one of claims 1-14, characterized in that: The second compass leg (12) includes a connecting pen sleeve (14) and a double-ended pen tool (3) detachably connected to the connecting pen sleeve (14). The end of the connecting pen sleeve (14) away from the double-ended pen tool (3) is rotatably connected to the compass connecting seat (10). One end of the double-ended pen tool (3) is a pen or tool, and the other end is also a pen or tool. The tool is any one of a pencil lead-shaped tool (4), a screwdriver (342), a cutting knife, a needle-shaped tool, or a lamp assembly.

16. A multifunctional compass according to claim 15, characterized in that: The double-ended pen tool (3) further includes a hollow pen barrel (31) and pen tips (32) detachably connected to both ends of the hollow pen barrel (31). A pressing component (33) is provided in the middle of the hollow pen barrel (31), and a through hole (38) is provided on the side wall of the hollow pen barrel (31) to cooperate with the pressing component (33). A first spring (36) is installed between one of the pen tips (32) and the pressing component (33) to press the mechanical pencil lead (2), the pencil lead (341), the screwdriver, the cutting knife, the needle tool, or the lamp assembly. A second spring (37) is installed between the other pen tip (32) and the pressing component (33) to press the mechanical pencil lead (2), the pencil lead (341), the screwdriver, the cutting knife, the needle tool, or the lamp assembly.

17. A multifunctional compass according to claim 16, characterized in that: The pressable mechanical pencil lead (2) includes a hollow lead cylinder (21), with an inner lead tube (22) provided at one end inside the hollow lead cylinder (21). A storage cavity (212) is provided between the inner wall of the hollow lead cylinder (21) and the outer wall of the inner lead tube (22). The storage cavity (212) is used to store a number of pencil leads and / or a number of pencil lead-shaped tools (4). An elastic clamping assembly is provided at one end of the hollow lead cylinder (21) near the inner lead tube (22). A lead passage (211) is provided through the inner core tube (22) and the elastic clamping assembly. The pencil lead or pencil lead-shaped tool (4) can be inserted into the lead passage (211). The elastic clamping assembly can switch between a state of clamping the pencil lead or pencil lead-shaped tool (4) and a state of releasing the pencil lead or pencil lead-shaped tool (4). A tail plug (28) is detachably provided at the end of the hollow core tube (21) away from the inner core tube (22).

18. A multifunctional compass according to claim 17, characterized in that: The pencil lead-shaped tool (4) includes a pencil lead-shaped part (41) and an action part (42) disposed at one end of the pencil lead-shaped part (41). The pencil lead-shaped part (41) can be inserted into the lead channel (211). The action part (42) is a blade part (421) or a needle part (422).

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