Mechanical design drawing device convenient to adjust

Abstract

The mechanical design drawing device convenient to adjust comprises a drawing panel and a supporting frame used for supporting the drawing panel, the supporting frame comprises an outer sleeve and an inner sleeve in sliding fit with the outer sleeve, the drawing panel is located on the upper side of the inner sleeve, a containing cavity is formed in the outer sleeve, and the inner sleeve is located in the containing cavity. A limiting structure used for limiting the inner sleeve is arranged in the containing cavity, a through groove communicated with the containing cavity is formed in the outer side wall of the outer sleeve in the circumferential direction of the outer sleeve, a pedal is arranged on the lower side of the outer sleeve, and one end of the pedal penetrates through the through groove to be located in the containing cavity and fixedly connected with the limiting structure. The pedal can vertically swing with the through groove as a fulcrum, in the initial state, the limiting structure limits the inner sleeve, and limiting of the limiting structure on the inner sleeve can be eliminated by treading the pedal. According to the mechanical design drawing device convenient to adjust, a user can adjust the height of the drawing panel and determine whether the adjusted height is appropriate or not at the same time, so that the adjusting frequency is reduced, and time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of drawing devices, and particularly relates to a mechanical design drawing device which is convenient to adjust. Background Art

[0002] Mechanical drawing is a discipline that accurately represents the structural shape, size, working principle and technical requirements of a machine with drawings. Drawings are composed of graphics, symbols, texts, numbers, etc., and are technical documents expressing design intentions, manufacturing requirements and exchanging experiences, and are often called the language of the engineering field. Although the rise of 3D drawing software has brought a more rapid and convenient drawing method for people, in many fields such as industrial applications and teaching, manual drawing of mechanical drawings still has a wide range of application scenarios, which requires the use of drawing devices. And mechanical drawing often needs to use various drawings with different sizes, and in order to facilitate the storage of the drawings, they are often curled and carried, which leads to the frequent use of a fixing structure to fix the drawings on the desktop for convenient drawing on the drawings.

[0003] When adjusting the height of the existing drawing device, the user needs to leave the seat to adjust it, and cannot adjust it to the height suitable for drawing while sitting on the chair at one time, and needs to adjust it multiple times, wasting time. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a mechanical design drawing device which is convenient to adjust in view of the above defects, so that the user can adjust the height of the drawing panel and determine whether the adjusted height is appropriate at the same time, thereby reducing the number of adjustments and saving time.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a mechanical design drawing device which is convenient to adjust, comprising a drawing panel and a support frame for supporting the drawing panel. The support frame comprises an outer sleeve and an inner sleeve which is slidably matched with the outer sleeve. The drawing panel is located above the inner sleeve. A receiving cavity is formed in the outer sleeve. A limiting structure for limiting the inner sleeve is arranged in the receiving cavity. A through groove communicated with the receiving cavity is formed in the outer sleeve. A pedal is arranged on the lower side of the outer sleeve. One end of the pedal passes through the through groove and is located in the receiving cavity and is fixedly connected with the limiting structure. The pedal can swing vertically with the through groove as a fulcrum. In the initial state, the limiting structure limits the inner sleeve, and the limit of the limiting structure on the inner sleeve can be cancelled by stepping on the pedal.

[0006] Compared with the prior art, the beneficial effects of this solution are as follows: The support rod includes an outer sleeve and an inner sleeve. The drawing panel is arranged on the upper side of the inner sleeve. In the initial state, the inner sleeve is fixed to the outer sleeve through a limiting structure. When the user needs to adjust the height of the drawing panel according to their own needs, step on the pedal with the foot, so that the pedal swings downward with the through groove as the fulcrum. The downward swing of the pedal drives the movement of the limiting structure, thereby canceling the limitation of the inner sleeve by the limiting structure. While stepping on the pedal, hold both sides of the drawing panel with the hand and drive it to move up and down. After adjusting the drawing panel to a height suitable for oneself, release the pedal, and the pedal swings upward to the initial position. At this time, the limiting structure restricts the inner sleeve again. This device can determine whether the adjusted height is appropriate while the user adjusts the height of the drawing panel, reduce the number of adjustments, and save time.

[0007] As a preferred embodiment of the present utility model, through holes communicating with the accommodation cavity are formed in the inner side wall of the outer sleeve along its circumferential direction. Connecting grooves are formed in the inner sleeve along its circumferential direction. A plurality of the connecting grooves are arranged at intervals along its axial direction. The limiting structure includes a limiting block slidably matched with the through hole. The side of the limiting block away from the inner sleeve is inclined. A first tension spring is connected between the limiting block and the side wall of the accommodation cavity. A connecting rod is fixedly connected to the pedal along the vertical direction. A second tension spring is connected between the lower end of the connecting rod and the bottom wall inside the outer sleeve. A pushing block is arranged at the upper end of the connecting rod. In the initial state, the limiting block is clamped with the connecting groove, and the pushing block is in inclined surface fit with the limiting block. By stepping on the pedal downward, the pushing block is driven to move upward, so that the first tension spring drives the limiting block to withdraw from the connecting groove. Release the pedal, and the pushing block is driven by the second tension spring to be in inclined surface fit with the limiting block again and drive it to snap into the connecting groove.

[0008] The beneficial effects of this solution: In the initial state, both ends of the limiting block are respectively located in the accommodation cavity and the connecting groove, restricting the inner sleeve. When the user adjusts the height of the drawing panel, step on the pedal with the foot, so that the pedal swings downward. Since one end of the pedal extending into the accommodation cavity is fixedly connected with a connecting rod, and a second tension spring is connected between the lower end of the connecting rod and the bottom wall inside the outer sleeve, and a pushing block in inclined surface fit with the limiting block is arranged at the upper end of the connecting rod. Therefore, when the pedal swings downward, the connecting rod and the pushing block move upward against the tension of the second tension spring until the pushing block is no longer in inclined surface fit with the limiting block. At this time, the pushing block no longer limits the limiting block, and the limiting block withdraws from the connecting groove under the drive of the first tension spring. At this time, the limiting block no longer restricts the inner sleeve, and the position of the inner sleeve in the outer sleeve can be adjusted, thereby adjusting the height of the drawing panel. After adjustment, release the pedal, and the pedal swings upward to the initial position. The connecting rod and the pushing block move downward under the drive of the second tension spring. The pushing block drives the limiting block to move in the through hole towards the direction close to the inner sleeve and snap into the connecting groove at another position, restricting the inner sleeve. The structure is reasonable and easy to operate, and can reduce the adjustment time.

[0009] As a preferred embodiment of the present utility model, a through hole for accommodating the first tension spring to pass through is provided on the connecting rod.

[0010] Beneficial effects of this solution: When the first tension spring passes through the through hole and the pedal is stepped on to drive the connecting rod and the push block to move upward, causing the limiting block to withdraw from the connecting groove under the drive of the first tension spring, the first tension spring will not hinder the movement of the connecting rod.

[0011] As a preferred embodiment of the present utility model, a sliding groove is axially formed on the inner side wall of the outer sleeve, and a sliding block for slidingly cooperating with the sliding groove is axially provided on the inner sleeve.

[0012] Beneficial effects of this solution: The sliding block provided on the inner sleeve slidingly cooperates with the sliding groove provided on the outer sleeve, which can play a limiting role in the horizontal direction for the inner sleeve when adjusting the height, avoiding the inner sleeve from rotating within the outer sleeve, thereby preventing the situation where the connecting groove on the inner sleeve cannot be aligned with the limiting block, which affects the adjustment efficiency.

[0013] As a preferred embodiment of the present utility model, a plurality of marks are axially provided on the inner sleeve, and the marks are respectively located between adjacent two connecting grooves.

[0014] Beneficial effects of this solution: By setting marks to determine the position of the connecting groove on the moved inner sleeve, making it correspond to the position of the limiting block, it is convenient to snap the limiting block into the connecting groove to limit the inner sleeve.

[0015] It can ensure that the connecting groove on the moved inner sleeve can correspond to the position of the limiting block, so as to snap the limiting block into

[0016] As a preferred embodiment of the present utility model, a plurality of support rods are symmetrically and obliquely arranged on the outer circumferential surface of the inner sleeve, and one end of each support rod away from the inner sleeve is fixedly connected to the lower side of the drawing panel.

[0017] Beneficial effects of this solution: Since the user will place the arm on the drawing panel when drawing, thus applying a downward force to the drawing panel, the plurality of support rods obliquely arranged on the outer circumferential surface of the inner sleeve can play a further supporting role for the drawing panel, enabling it to bear a greater force. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of an embodiment of a mechanical design drawing device for the present utility model that is convenient for adjustment.

[0019] Figure 2 is Figure 1 a schematic diagram of the structure of the inner sleeve in

[0020] Figure 3 is Figure 1Schematic diagram of the structure of the outer and inner sleeves.

[0021] Figure 4 It is a cross-sectional view of the outer sleeve.

[0022] Figure 5 It is a schematic diagram of the structure of another angle of the present utility model.

[0023] Figure 6 It is Figure 5 The partial enlarged view at position A in Specific implementation manner

[0024] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be understood that the described preferred embodiments are only used to explain the present utility model and do not limit the protection scope of the present utility model.

[0025] The terms "first", "second", etc. in the specification, claims, and embodiments of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence.

[0026] The present utility model will be further described in detail below through preferred specific implementation manners:

[0027] The reference numerals in the accompanying drawings of the specification include: drawing panel 1, outer sleeve 2, through groove 201, through hole 202, sliding groove 203, inner sleeve 3, connection groove 301, mark 302, slider 303, accommodating cavity 4, pedal 5, limit block 6, first tension spring 7, connecting rod 8, through hole 801, second tension spring 9, support rod 10, swing rod 11, push block 12.

[0028] As shown in the Figure 1 accompanying drawings: The adjustable mechanical design drawing device of this embodiment includes a drawing panel 1 and a support frame for supporting the drawing panel 1. The support frame includes an outer sleeve 2 and an inner sleeve 3 that is slidably matched with the outer sleeve 2. The drawing panel 1 is located above the inner sleeve 3.

[0029] As shown in the Figure 2 accompanying drawings: The inner sleeve 3 is provided with connection grooves 301 along its circumferential direction. A plurality of connection grooves 301 are arranged at intervals along its axial direction. In this embodiment, seven connection grooves 301 are preferably provided. The inner sleeve 3 is provided with a plurality of marks 302 along its axial direction. The marks 302 are respectively located between adjacent connection grooves 301. The inner sleeve 3 is also provided with a slider 303 along its axial direction. A plurality of support rods 10 are symmetrically and obliquely arranged on the outer circumferential surface of the inner sleeve 3. In this embodiment, two support rods 10 are preferably provided. One end of each support rod 10 away from the inner sleeve 3 is fixedly connected to the lower side of the drawing panel 1.

[0030] As shown in the Figure 3 and the Figure 4As shown: A receiving cavity 4 is formed in the outer sleeve 2. A through groove 201 communicating with the receiving cavity 4 is formed in the outer side wall of the outer sleeve 2 along its circumferential direction. A through hole 202 communicating with the receiving cavity 4 is formed in the inner side wall of the outer sleeve 2 along its circumferential direction. A sliding groove 203 for slidably cooperating with the slider 303 is formed in the inner side wall of the outer sleeve 2 along its axial direction.

[0031] As shown in the attached Figure 5 and the attached Figure 6 As shown: A limiting structure for limiting the inner sleeve 3 is provided in the receiving cavity 4. The limiting structure includes a limiting block 6 slidably cooperating with the through hole 202. One side of the limiting block 6 away from the inner sleeve 3 is inclined. A first tension spring 7 is connected between the limiting block 6 and the side wall of the receiving cavity 4.

[0032] A pedal 5 is provided below the outer sleeve 2. One end of the pedal 5 is connected with a swing rod 11. The swing rod 11 passes through the through groove 201 and is located in the receiving cavity 4. The swing rod 11 can swing vertically with the through groove 201 as a fulcrum. One end of the swing rod 11 located in the receiving cavity 4 is fixedly connected with a connecting rod 8 along the vertical direction. A through hole 801 for accommodating the first tension spring 7 to pass through is provided on the connecting rod 8. A second tension spring 9 is connected between the lower end of the connecting rod 8 and the bottom wall inside the outer sleeve 2. The elastic coefficient of the second tension spring 9 is greater than that of the first tension spring 7. A push block 12 is provided at the upper end of the connecting rod 8.

[0033] In the initial state, the limiting block 6 is clamped with the connecting groove 301. The push block 12 is in inclined surface cooperation with the limiting block 6. By stepping on the pedal 5 downward, the push block 12 is driven to move upward, so that the first tension spring 7 drives the limiting block 6 to withdraw from the connecting groove 301. When the pedal 5 is released, the push block 12 is driven by the second tension spring 9 to be in inclined surface cooperation with the limiting block 6 again and drive it to be clamped into the connecting groove 301.

[0034] In this specific embodiment, the receiving cavity 4, the through groove 201, the through hole 202, the pedal 5, the connecting rod 8 and the limiting structure are symmetrically arranged in two groups along the radial direction of the outer sleeve 2. The connecting groove 301 is arranged in two groups along the radial direction of the inner sleeve 3.

[0035] The preferred embodiments of the present application have been elaborated in detail above in combination with the accompanying drawings. The typical well-known structures and well-known common sense technologies in the preferred embodiments are not described in detail here. Those of ordinary skill in the art can, under the inspiration given by this embodiment, improve and implement the technical solution of the present invention in combination with their own abilities. Some typical well-known structures, well-known methods or well-known common sense technologies should not become an obstacle for those of ordinary skill in the art to implement the present application.

[0036] The scope of protection claimed in this application shall be subject to the content of its claims, and the content recorded in the utility model content, specific implementation manners and the drawings of the description is used to interpret the claims.

[0037] Within the scope of the technical concept of this application, several modifications can also be made to the specific implementation manners of this application, and these modified specific implementation manners should also be regarded as within the scope of protection of this application.

Claims

1. A mechanical design drawing device that is easy to adjust, comprising a drawing panel and a support frame for supporting the drawing panel, characterized in that: The support frame includes an outer sleeve and an inner sleeve that slides with the outer sleeve, the drawing panel is located on the upper side of the inner sleeve, the outer sleeve is provided with a accommodating cavity, a limiting structure for limiting the inner sleeve is provided in the accommodating cavity, a through groove that is connected to the accommodating cavity is provided on the outer wall of the outer sleeve along its circumference, a pedal is provided on the lower side of the outer sleeve, one end of the pedal passes through the through groove and is located in the accommodating cavity and is fixedly connected to the limiting structure, the pedal can be vertically swung with the through groove as a fulcrum, in the initial state, the limiting structure limits the inner sleeve, and the limitation of the inner sleeve by the limiting structure can be cancelled by stepping on the pedal.

2. The mechanical design drawing device that is easy to adjust according to claim 1 is characterized in that: The cam is provided with a plurality of connecting grooves along its circumference and a plurality of connecting grooves are arranged at intervals along its axial direction. The limiting structure includes a limiting block that slidably cooperates with the through hole, and the limiting block is inclined away from the inner sleeve. The side wall of the limiting block is connected with the side wall of the accommodating cavity by a first tension spring. A connecting rod is fixedly connected to the pedal in a vertical direction, and a second tension spring is connected between the lower end of the connecting rod and the bottom wall of the outer sleeve. In an initial state, the limiting block is clamped in the connecting groove, and the pushing block cooperates with the inclined surface of the limiting block. By stepping on the pedal downward, the pushing block is driven to move upward, so that the first tension spring drives the limiting block to withdraw from the connecting groove. When the pedal is released, the pushing block cooperates with the inclined surface of the limiting block again under the drive of the second tension spring and drives it to clamp into the connecting groove.

3. The mechanical design drawing device that is easy to adjust according to claim 2 is characterized in that: The connecting rod is provided with a through hole for accommodating the first tension spring to pass through.

4. The mechanical design drawing device according to claim 1, characterized in that: A sliding groove is provided on the inner side wall of the outer sleeve along its axial direction, and a sliding block for slidingly cooperating with the sliding groove is provided on the inner sleeve along its axial direction.

5. The mechanical design drawing device that is easy to adjust according to claim 4 is characterized in that: The inner sleeve is provided with a plurality of marks along its axial direction, and the marks are respectively located between two adjacent connecting grooves.

6. The mechanical design drawing device according to claim 4, characterized in that: A plurality of support rods are symmetrically and obliquely arranged on the outer circumferential surface of the inner sleeve, and one end of each support rod away from the inner sleeve is fixedly connected to the lower side of the drawing panel.

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