Construction site construction drawing change marking tool

Abstract

The utility model relates to a construction site construction drawing change marking tool, which comprises a pen mouth, a lower pen sleeve, a pen shell and a control structure, and is provided with a round sleeve, when a refill needs to be replaced, a worker rotates a rotating handle, threads on the inner side surface of the rotating handle are meshed with threads on the outer side surface of a screw rod, and the screw rod is driven to penetrate through the rotating handle to move; power is provided for front-back displacement of the elastic blocks, the elastic blocks can do synchronous displacement through the pulling effect generated by the linkage frame and telescopic connection of the telescopic rods, the diameter of a circle formed on the inner side of the elastic blocks can be large or small, and therefore the installation force on a refill is loosened or reduced, and a worker can directly insert or detach the refill from a tool conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of drawing change marking, in particular to a construction drawing change marking tool at a construction site. Background Art

[0002] Construction drawing design is a stage of engineering design. It is a drawing that shows the overall layout of the project, the external shape of buildings and structures, internal layout, structural structure, internal and external decoration, material methods, equipment, construction and other requirements. Construction drawings are characterized by complete drawings, accurate expression and specific requirements. They are the basis for engineering construction, preparation of construction drawing budgets and construction organization design. They are also important technical documents for technical management. Construction drawings change during construction, and marking tools are needed in the drawing plan to indicate the reasons for changes, initial records, changes to design drawings, changes to the project cost plan, etc.

[0003] When optimizing existing construction site construction drawing change marking tools, most of the focus is on improving the functionality of the marking tools. For example, Chinese utility model patent application number CN03801708.3 discloses "A marking pen". In this device, one or more fluid holding chambers can be retracted or detachably installed in the shell to change the length of the continuous ridge, or change the color applied by one or more pen tips, and multiple fluid holding pen tips extend from one end of an elongated shell, a narrower ridge is formed along the width of each pen tip, and together with the ridges of other pen tips, a continuous ridge is defined from which fluid can be transferred to a surface, and an impermeable device is used to prevent or stop the transfer of fluid from one pen tip to an adjacent pen tip.

[0004] Although the above-mentioned construction site construction drawing change marking tool has certain advantages in improving the functionality of the marking tool, it still has certain disadvantages: after the marking tool has been used for a period of time, its refill will be out of ink and need to be replaced frequently. When replacing the refill of a conventional marking tool, a person needs to disassemble the entire pen case, disassemble the internal parts, and then remove the refill to replace it, and then assemble it again. The operation is cumbersome and easily causes loss or damage of parts. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In order to solve the above technical problems, the utility model provides a construction drawing change marking tool at a construction site.

[0007] (II) Technical solution

[0008] Based on this, the utility model provides the following technical solutions: a construction site construction drawing change marking tool, comprising a pen mouth, a lower pen sleeve, a pen shell and a control structure, wherein the pen mouth and the lower pen sleeve are an integrated structure and are located at the front end position thereof, the pen shell flange is connected to the rear of the lower pen sleeve, the control structure passes through the interior of the lower pen sleeve and the pen shell, and the rear end of the control structure is movably engaged with the rear end of the pen shell; the control structure comprises a pen core, a spring, a round sleeve, a first clamping body, a protruding block, a second clamping body, a sliding groove and a pressing handle, the spring is wound around the outside of the pen core and movably cooperates, one end of the spring is embedded and connected in the round sleeve and movably cooperates, the pen core is connected to the front end of the first clamping body by passing through the round sleeve, the first clamping body is movably engaged with the second clamping body through the protruding block, the sliding groove and the second clamping body are an integrated structure, the protruding block is slidably engaged with the inner side of the sliding groove, and the pressing handle is embedded and connected to the rear end of the second clamping body;

[0009] Preferably, the circular sleeve comprises a connecting sleeve, a rotating handle, a cavity, a guide groove, a through-hole and a convenient disassembly and assembly structure, the rotating handle penetrates into the interior of the connecting sleeve and is rotated and engaged, the cavity is located on the inner side of the connecting sleeve, the guide groove and the connecting sleeve are an integrated structure and are located at both side ends thereof, the through-hole is located on the inner side of the convenient disassembly and assembly structure, the convenient disassembly and assembly structure moves inside the cavity, and both sides of the convenient disassembly and assembly structure are pressed into the guide groove and are movably engaged;

[0010] Preferably, the convenient disassembly and assembly structure includes a screw rod, an outer fixed ring, a telescopic rod, an elastic block, a linkage frame and a guide block, the screw rod passes through the outer fixed ring, the rear end of the telescopic rod is embedded and fixedly connected to the inner end of the outer fixed ring, the elastic block is fixedly connected to the front end of the telescopic rod and movably cooperates, the two side ends of the linkage frame are respectively hinged to the outer end of the elastic block, and the guide block is embedded and connected at the two end positions on the outer side of the outer fixed ring.

[0011] Preferably, the pen tip includes a blocking block, a spring steel, a connecting rod, a fixed block, a core opening and a ring opening, the two side ends of the spring steel are respectively connected to the inner side of the connecting rod and movably cooperate with each other, the lower end of the connecting rod is connected to the side end of the blocking block, the upper end of the connecting rod is hinged to the fixed block, the fixed block is embedded and connected to the inner side of the inner ring frame, the ring opening and the blocking block have a gap and movably cooperate with each other, and the core opening is located on the inner side of the ring opening.

[0012] Preferably, the pen core passes through the pen mouth and passes through the inner side of the lower pen sleeve, the pressing handle passes through the end of the pen shell, the outer side of the protruding block is embedded and connected to the inner wall surface of the pen shell, and the round sleeve is embedded and installed at the inner rear position of the lower pen sleeve. The pen core moves with the displacement and rotation of the first locking body. The first locking body is displaced by being pushed by the sliding groove, and its own structure cooperates with the protruding block to realize rotation, and produces a locking position with the second locking body at different positions.

[0013] Preferably, the outer wall surface of the connecting sleeve is connected to the inner wall surface of the lower pen sleeve, the rotating handle passes through the upper end of the lower pen sleeve, the through-opening passes through the pen core, the convenient disassembly and assembly structure is movably engaged on the outside of the pen core, the guide groove provides a guide for the displacement of the convenient disassembly and assembly structure, and the inner wall surface of the rotating handle is a threaded surface structure, which is convenient for meshing with the convenient disassembly and assembly structure.

[0014] Preferably, the screw rod passes through the interior of the turning handle and meshes with it, the outer side of the outer fixed ring is gap-fitted with the inner side of the connecting sleeve, the guide block is pressed into the guide groove and slidably engaged, one side of the outer fixed ring is connected to one end of the spring and movably fits, the inner side of the tension block fits with the outer side of the pen core, the telescopic rod is telescopic, the tension block is in an arc-shaped trapezoid, the telescopic rod and the tension block are a group for coordinated movement, eight groups are provided, and they perform synchronous displacement movement, the linkage frame has eight groups, and each of them is hinged, and the angle can be changed to assist the tension block in performing synchronous movement.

[0015] Preferably, the inner ring frame is fixed at the front end position inside the lower pen sleeve, the core through-hole penetrates the pen core, the blocking block is movably fitted on the outside of the pen core, the spring steel is arc-shaped and elastic, and the blocking block is a block of elastic plastic material with good elasticity and softness. With the cooperation of the spring steel and the connecting rod, it can protrude outward from the ring mouth and stick to the outside of the pen core, producing a blocking effect at the front end of the pen mouth, thereby preventing foreign particles at the construction site from entering the interior of the marking tool.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a construction site construction drawing change marking tool, which has the following beneficial effects:

[0018] 1. A construction site construction drawing change marking tool, when the pen core moves forward and backward through the core opening, its outer peripheral surface contacts and presses against the front end surface of the blocking block. The blocking block is driven by the swinging of the connecting rod and the elastic cooperation of the spring steel according to the different forces when in contact with the pen core, so as to assist in driving its position change and avoid hindering the displacement of the pen core. The elastic property of the blocking block can protrude outward from the inner side surface of the ring opening, and can also effectively form a blocking effect at the pen opening, so as to prevent foreign matter from entering the interior of the marking tool through the opening of the pen after the pen core is stored in the lower pen sleeve.

[0019] 2. This construction site construction drawing change marking tool is equipped with a circular sleeve. When the refill needs to be replaced, the staff rotates the handle, and the thread on the inner side thereof meshes with the thread on the outer side of the screw, driving the screw to move through the handle, providing power for the front and rear displacement of the tension block. The tension blocks can be synchronously displaced through the pulling effect generated by the linkage frame and the telescopic connection of the telescopic rod, so that the circular diameter formed on the inner side can be increased or decreased, thereby loosening or tightening the installation force on the refill, making it convenient for the staff to directly insert or remove the refill from the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the control structure of the utility model;

[0022] Figure 3 This is a structural schematic diagram of the circular sleeve of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the convenient disassembly and assembly structure of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the pen mouth of the utility model.

[0025] In the figure: pen mouth-1, lower pen sleeve-2, pen shell-3, control structure-4, pen core-41, spring-42, round sleeve-43, first locking body-44, protruding block-45, second locking body-46, slide groove-47, pressing handle-48, connecting sleeve-431, rotating handle-432, cavity-433, guide groove-434, through-hole-435, convenient disassembly structure-436, screw-361, outer fixing ring-362, telescopic rod-363, elastic block-364, linkage frame-365, guide block-366, blocking block-11, spring steel-12, connecting rod-13, fixing block-14, core through-hole-15, ring mouth-16, inner ring frame-17. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-2 A construction site construction drawing change marking tool comprises a pen mouth 1, a lower pen sleeve 2, a pen shell 3 and a control structure 4. The pen mouth 1 and the lower pen sleeve 2 are an integrated structure and are located at the front end thereof. The pen shell 3 is flange-connected to the rear of the lower pen sleeve 2. The control structure 4 passes through the interior of the lower pen sleeve 2 and the pen shell 3. The rear end of the control structure 4 is movably engaged with the rear end of the pen shell 3. The control structure 4 comprises a pen core 41, a spring 42, a round sleeve 43, a first clamping body 44, a protruding block 45, a second clamping body 46, a slide groove 47 and a pressing handle 48. The spring 42 is wound around the outer side of the pen core 41 and is movably engaged. One end of the spring 42 is embedded and connected in the round sleeve 43 and is movably engaged. The pen core 41 is connected to the front end of the first clamping body 44 by passing through the round sleeve 43. The first clamping body 44 is movably engaged with the front end of the pen shell 3. The positioning body 44 is movably matched with the second positioning body 46 through the protruding block 45, the slide groove 47 and the second positioning body 46 are an integrated structure, the protruding block 45 is slidably engaged with the inner side of the slide groove 47, the pressing handle 48 is embedded and connected to the rear end of the second positioning body 46, the pen core 41 passes through the pen mouth 1 and passes through the inner side of the lower pen sleeve 2, the pressing handle 48 passes through the end of the pen shell 3, the outer side of the protruding block 45 is embedded and connected to the inner wall surface of the pen shell 3, the round sleeve 43 is embedded and installed at the rear position of the lower pen sleeve 2, the pen core 41 moves with the displacement and rotation of the first positioning body 44, the first positioning body 44 is displaced by being pushed by the slide groove 47, and its own structure cooperates with the protruding block 45 to realize rotation, and produces different positions of the positioning with the second positioning body 46;

[0028] See also Figure 3-4, a construction site construction drawing change marking tool, the round sleeve 43 includes a connecting sleeve 431, a rotating handle 432, a cavity 433, a guide groove 434, a through-hole 435 and a convenient disassembly structure 436, the rotating handle 432 penetrates into the interior of the connecting sleeve 431 and rotates to engage, the cavity 433 is located on the inner side of the connecting sleeve 431, the guide groove 434 and the connecting sleeve 431 are an integrated structure and are located at both side ends thereof, the through-hole 435 is located on the inner side of the convenient disassembly structure 436, the convenient disassembly structure 436 moves on the inner side of the cavity 433, and the convenient disassembly structure The two sides of the structure 436 are embedded and pressed into the guide groove 434 and movably engaged; the convenient disassembly and assembly structure 436 includes a screw rod 361, an outer fixed ring 362, a telescopic rod 363, a tension block 364, a linkage frame 365 and a guide block 366, the screw rod 361 passes through the outer fixed ring 362, the rear end of the telescopic rod 363 is embedded and connected with the inner end of the outer fixed ring 362, the tension block 364 is fixedly connected to the front end of the telescopic rod 363 and movably cooperates, the two side ends of the linkage frame 365 are respectively hinged to the outer end of the tension block 364, and the guide block 366 is embedded and connected to the outer fixed ring 362. At the two ends of the outer side, the outer wall surface of the connecting sleeve 431 is connected to the inner wall surface of the lower pen sleeve 2, the rotating handle 432 passes through the upper end of the lower pen sleeve 2, the through hole 435 passes through the pen core 41, the convenient disassembly structure 436 is movably matched on the outer side of the pen core 41, and the guide groove 434 provides a guide for the displacement of the convenient disassembly structure 436. The inner wall surface of the rotating handle 432 is a threaded surface structure, which is convenient for meshing with the convenient disassembly structure 436. The screw 361 passes through the interior of the rotating handle 432 and meshes with it. The outer clearance of the outer fixed ring 362 is matched with the connecting sleeve 431. On the inner side of the socket 431, the guide block 366 is embedded in the guide groove 434 and slidably engaged. One side of the outer fixed ring 362 is connected to one end of the spring 42 and movably cooperates. The inner side of the elastic block 364 fits the outer side of the refill 41. The telescopic rod 363 is retractable, and the elastic block 364 is in an arc-shaped trapezoid. The telescopic rod 363 and the elastic block 364 are a group for coordinated activities, and eight groups are provided, and they perform synchronous displacement activities. The linkage frame 365 has eight groups, and they are hinged between each other, and the angle can be changed to assist the elastic block 364 to perform synchronous activities.

[0029] See also Figure 5A construction site construction drawing change marking tool, the pen tip 1 includes a blocking block 11, a spring steel 12, a connecting rod 13, a fixing block 14, a core through-hole 15 and a ring mouth 16, the two side ends of the spring steel 12 are respectively connected to the inner side of the connecting rod 13 and movably matched, the lower end of the connecting rod 13 is connected to the side end of the blocking block 11, the upper end of the connecting rod 13 is hinged to the fixing block 14, the fixing block 14 is embedded and connected to the inner side of the inner ring frame 17, the ring mouth 16 is movably matched with the blocking block 11, and the core through-hole 15 is located at the ring mouth 16 On the inner side, the inner ring frame 17 is fixed at the front end position inside the lower pen sleeve 2, the core through-hole 15 penetrates the pen core 41, the blocking block 11 is movably fitted on the outside of the pen core 41, the spring steel 12 is arc-shaped and elastic, the blocking block 11 is a block of elastic plastic material, and has good elasticity and softness. With the cooperation of the spring steel 12 and the connecting rod 13, the ring mouth 16 can protrude outward and be attached to the outside of the pen core 41, producing a blocking effect at the front end of the pen mouth 1, thereby preventing foreign particles at the construction site from entering the interior of the marking tool.

[0030] In summary, at the construction site, when personnel need to make changes to the construction drawings and use the marking tool, the personnel hold the pen housing 3 and press the pressing handle 48 to drive the second locking body 46 to move forward along the protruding block 45, and push the first locking body 44 forward, thereby pushing the pen core 41 to the outside of the pen mouth 1. After the rear end of the first locking body 44 is separated from the locking position with the protruding block 45, the first locking body 44 rotates so that the locking position on its own structure no longer matches the front end of the protruding block 45, but is locked with the front end structure of the second locking body 46. The second locking body 46 is the first locking body The body 44 provides positioning after the forward displacement, so that the front end of the pen core 41 is pushed to the outside of the pen mouth 1 and fixed. The staff can use the front end of the pen core 41 to mark the change of the drawing. When the pen core 41 needs to be retracted, the pressing handle 48 is pressed again, so that the second locking body 46 pushes the first locking body 44 forward again. After the first locking body 44 rotates, it turns to the slot on the first locking body 44 that matches the protruding block 45, so that the first locking body 44 and the protruding block 45 are locked and matched again. The first locking body 44 loses the thrust of the second locking body 46 and moves backward along the protruding block 45, driving the pen core. The pen core 41 is retracted into the interior of the lower pen sleeve 2. When the pen core 41 moves forward and backward through the core opening 15, its outer peripheral surface contacts and presses against the front end surface of the blocking block 11. The blocking block 11 is driven by the swinging of the connecting rod 13 and the elasticity of the spring steel 12 according to the different forces when it contacts the pen core 41, so as to assist in driving its position change, thereby avoiding hindering the displacement of the pen core 41. In addition, the elasticity of the blocking block 11 can protrude outward from the inner side of the ring opening 16, and can also effectively form a blocking effect at the pen opening 1, thereby preventing foreign matter from entering the marking tool through the opening at the pen opening 1 after the pen core 41 is received in the lower pen sleeve 2. Inside, a circular sleeve 43 is provided. When the refill 41 needs to be replaced, the operator rotates the handle 432, and the thread on the inner side thereof meshes with the thread on the outer side of the screw 361, driving the screw 361 to move through the handle 432, providing power for the front and rear displacement of the tension block 364. The tension blocks 364 can be synchronously displaced by the pulling effect generated by the linkage frame 365 and the telescopic connection of the telescopic rod 363, so that the circular diameter formed on the inner side can be increased or decreased, thereby loosening or tightening the installation force on the refill 41, making it convenient for the operator to directly insert or remove the refill 41 from the tool.

[0031] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0032] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction drawing change marking tool at a construction site, characterized by: The invention comprises a pen mouth (1), a lower pen sleeve (2), a pen shell (3) and a control structure (4); the pen mouth (1) and the lower pen sleeve (2) are an integrated structure and are located at the front end thereof; the pen shell (3) is flange-connected to the rear of the lower pen sleeve (2); the control structure (4) passes through the interior of the lower pen sleeve (2) and the pen shell (3); and the rear end of the control structure (4) is movably engaged with the rear end of the pen shell (3); The control structure (4) comprises a pen core (41), a spring (42), a round sleeve (43), a first locking body (44), a protruding block (45), a second locking body (46), a sliding groove (47) and a pressing handle (48); the spring (42) is wound around the outer side of the pen core (41) and is movably engaged; one end of the spring (42) is embedded and connected in the round sleeve (43) and is movably engaged; the pen core (41) is connected to the front end of the first locking body (44) by passing through the round sleeve (43); the first locking body (44) is movably engaged with the second locking body (46) through the protruding block (45); the sliding groove (47) and the second locking body (46) are an integrated structure; the protruding block (45) is slidably engaged with the inner side of the sliding groove (47); and the pressing handle (48) is embedded and connected to the rear end of the second locking body (46); The circular sleeve (43) comprises a connecting sleeve (431), a rotating handle (432), a cavity (433), a guide groove (434), a through-hole (435) and a convenient disassembly and assembly structure (436); the rotating handle (432) penetrates into the interior of the connecting sleeve (431) and is rotatably engaged; the cavity (433) is located on the inner side of the connecting sleeve (431); the guide groove (434) and the connecting sleeve (431) are an integrated structure and are located at both side ends thereof; the through-hole (435) is located on the inner side of the convenient disassembly and assembly structure (436); the convenient disassembly and assembly structure (436) is movable on the inner side of the cavity (433); and both sides of the convenient disassembly and assembly structure (436) are pressed into the guide groove (434) and are movably engaged; The convenient disassembly and assembly structure (436) comprises a screw rod (361), an outer fixing ring (362), a telescopic rod (363), an elastic block (364), a linkage frame (365) and a guide block (366); the screw rod (361) passes through the outer fixing ring (362); the rear end of the telescopic rod (363) is embedded and fixedly connected to the inner end of the outer fixing ring (362); the elastic block (364) is fixedly connected to the front end of the telescopic rod (363) and movably cooperates; the two side ends of the linkage frame (365) are respectively hinged to the outer end of the elastic block (364); and the guide block (366) is embedded and fixedly connected to the outer two end positions of the outer fixing ring (362).

2. A construction site construction drawing change marking tool according to claim 1, characterized in that: The pen mouth (1) comprises a blocking block (11), a spring steel (12), a connecting rod (13), a fixing block (14), a core opening (15) and a ring opening (16). The two side ends of the spring steel (12) are respectively connected to the inner side of the connecting rod (13) and are movably matched. The lower end of the connecting rod (13) is connected to the side end of the blocking block (11). The upper end of the connecting rod (13) is hinged to the fixing block (14). The fixing block (14) is embedded and connected to the inner side of the inner ring frame (17). The ring opening (16) and the blocking block (11) are movably matched with each other in a clearance. The core opening (15) is located on the inner side of the ring opening (16).

3. A construction site construction drawing change marking tool according to claim 1, characterized in that: The pen core (41) passes through the pen opening (1) and penetrates into the inner side of the lower pen sleeve (2); the pressing handle (48) passes through the end of the pen shell (3); the outer side of the protruding block (45) is embedded and connected to the inner wall surface of the pen shell (3); and the round sleeve (43) is embedded and installed at a rear position inside the lower pen sleeve (2).

4. A construction site construction drawing change marking tool according to claim 1, characterized in that: The outer wall surface of the connecting sleeve (431) is connected to the inner wall surface of the lower pen sleeve (2), the rotating handle (432) passes through the upper end of the lower pen sleeve (2), the through opening (435) passes through the pen core (41), and the convenient disassembly and assembly structure (436) is movably matched on the outer side of the pen core (41).

5. A construction site construction drawing change marking tool according to claim 1, characterized in that: The screw rod (361) penetrates into the interior of the rotating handle (432) and meshes with it. The outer side of the outer fixing ring (362) is loosely fitted into the inner side of the connecting sleeve (431). The guide block (366) is pressed into the guide groove (434) and slidably engaged. One side of the outer fixing ring (362) is connected to one end of the spring (42) and movably fits therewith. The inner side of the elastic block (364) is fitted with the outer side of the pen core (41).

6. A construction site construction drawing change marking tool according to claim 2, characterized in that: The inner ring frame (17) is fixedly located at the front end of the lower pen sleeve (2), the core opening (15) penetrates the pen core (41), and the blocking block (11) is movably fitted on the outside of the pen core (41).

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