Improved triangular rule

Abstract

The invention discloses an improved triangular rule which comprises a rule body, a backing plate is rotationally arranged on any side of the rule body, and a locking device used for fixing the backing plate at a target angle is arranged on the rule body or the backing plate; a sliding groove is formed in the ruler body, a sliding block is arranged in the sliding groove in a sliding mode, and a penetrating hole used for installing a drawing pen is formed in the sliding block. The sliding block can be in pressing fit with the sliding groove at any position in the sliding groove. Through the rotatable backer plate, the ruler body can be used as a normal set square, when the backer needs to be used, the angle between the backer plate and the ruler body is changed by rotating the backer plate so as to be matched with the edge needing to abut against, and the multifunctional ruler can be suitable for table top edges with different angles.

Description

Technical Field

[0001] The present application relates to the technical field of surveying and mapping tools, and in particular to an improved set square. Background Art

[0002] The triangle ruler is the most basic and commonly used drawing tool in mathematical drawing, engineering drawing, art design and other fields. It is mainly used to draw straight lines and specific angles.

[0003] To meet diverse drawing needs, such as the need to draw parallel lines, the present applicant has proposed a multifunctional ruler with publication number CN218430676U. This ruler features an auxiliary marking assembly that can be fixed at any position within the scale range to draw parallel lines. However, the locking member of this auxiliary marking assembly acts directly on the ruler body. This locking member can easily cause wear to the outer surface of the ruler body over long periods of fixed position, affecting both the aesthetics and the scale. Furthermore, this application also features a fixed support plate. For example, when drawing parallel or perpendicular lines, the ruler needs to be able to maintain a stable fit against the edge of the drawing board or tabletop. However, this specialized structure makes it inconvenient to use when drawing on a conventional flat surface and cannot adapt to edges at different angles.

[0004] The above content is only used to assist in understanding the technical solution of this application, and does not mean that the above content is the closest prior art to this application. Summary of the Invention

[0005] Based on this, the present application provides an improved triangle ruler to solve one of the above technical problems.

[0006] The technical solution adopted by the present application to solve its technical problem is an improved triangle ruler, comprising: a ruler body, a backrest plate is rotatably provided on any side of the ruler body, and a locking device is provided on the ruler body or the backrest plate for fixing the backrest plate at a target angle; a sliding groove is provided on the ruler body, a slider is slidably provided in the sliding groove, and a through-hole for installing a drawing pen is provided on the slider; the slider can be pressed and fitted with the sliding groove at any position in the sliding groove.

[0007] In some embodiments, the locking method of the locking device is tension-fit locking, and the locking structure includes a friction part and an abutment part. The friction part is arranged on the ruler body, and the abutment part is arranged inside the backrest plate. The abutment part generates friction resistance with the friction part by elastically tightening or threaded tightening.

[0008] In some embodiments, the locking method of the locking device is screw-tightening locking, and the locking device includes a first threaded rod, a first threaded hole that passes through the backing plate and is opened on the backing plate, and the first threaded rod is threadedly matched with the first threaded hole. By rotating the threaded rod, one end of the threaded rod can be pressed against or detached from the ruler body.

[0009] In some embodiments, the slider includes an upper connecting block and a lower connecting block, the upper connecting block and the lower connecting block are fixedly connected, the side wall of the slide groove that cooperates with the slider is a slope, and the upper connecting block or the lower connecting block is provided with a clamping part that cooperates with the slope, and the clamping part and the slope guide are tightened or loosened by moving the slider longitudinally.

[0010] In some embodiments, the slider includes an upper connecting block, a lower connecting block, and a driving block, and the driving block can drive the upper connecting block and the lower connecting block to press or separate against each other.

[0011] In some embodiments, the upper connecting block and the lower connecting block are respectively provided with a first flange and a second flange, and upper flange grooves and lower flange grooves that cooperate with the first flange and the second flange are provided on both sides of the slide groove. The upper connecting block and the lower connecting block can respectively press the upper flange groove and the lower flange groove to fix the position of the slider.

[0012] In some embodiments, the driving block includes a knob and a second threaded rod connected to each other, a second threaded hole is provided on the knob for threaded connection with the second threaded rod, one end of the second threaded rod is a limiting end, the knob and the limiting end are respectively abutted against the upper connecting block and the lower connecting block, and the knob is tightened or loosened by rotating.

[0013] In some embodiments, a first groove and a second groove are respectively formed on the upper connecting block and the lower connecting block, the knob is arranged on the first groove, and the limiting end is arranged in the second groove.

[0014] In some embodiments, square limiting grooves are provided in the first groove and the second groove, and square protrusions are provided on the second threaded rod to cooperate with the square limiting grooves.

[0015] In some embodiments, one side of the ruler body on which the backing plate is provided is semicircular.

[0016] The beneficial effects of the present application are: through the rotatable backing plate, the ruler body can be used as a normal triangle, and when the backing is needed, the backing plate can be rotated to change the angle between the backing plate and the ruler body to match the edge that needs to be rested, and it can be applied to desktop edges of different angles; in order to ensure the stability of drawing parallel lines, the present application provides two locking methods, one is to lock by inclined guide pressing without using a driving block, and the stress is concentrated on the side wall of the slide groove, which will not affect the outer surface of the ruler body; the other is that the driving block is pressed in the slide groove by the upper connecting block and the lower connecting block, and the driving block and the ruler body can only be locked by the upper connecting block and the lower connecting block, thereby increasing the force area and ensuring that the wear caused by locking is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the first three-dimensional structure of the slider of this application.

[0019] Figure 2 It is the main view and partial cross-sectional schematic diagram of this application.

[0020] Figure 3 It is a cross-sectional schematic diagram of the first embodiment of the slider of the present application.

[0021] Figure 4 This is a structural diagram of the second embodiment of the slider of the present application.

[0022] Figure 5 It is a cross-sectional schematic diagram of the second embodiment of the slider of the present application.

[0023] Figure 6 It is a schematic diagram of the exploded structure of the slider of this application.

[0024] Explanation of the accompanying reference numerals: 1. ruler body; 11. slide groove; 111. inclined surface; 112. upper flange groove; 113. lower flange groove; 12. friction part; 2. backing plate; 21. locking device; 211. abutment part; 212. first threaded rod; 213. first threaded hole; 22. round hole; 3. slider; 31. upper connecting block; 311. first flange; 312. first groove; 3121. square limiting groove; 32. lower connecting block; 321. second flange; 322. connecting step; 323. second groove; 33. pressing part; 34. through hole; 35. driving block; 351. knob; 3511. second threaded hole; 352. second threaded rod; 3521. limiting end; 3522. square protrusion. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection of this application.

[0026] In the examples of this application, please refer to Figure 1-6 As shown, the present application provides an improved triangle ruler, which mainly includes: a ruler body 1, a backing plate 2 is rotatably provided on any side of the ruler body 1, and a locking device 21 is provided on the ruler body 1 or the backing plate 2 for fixing the backing plate 2 at a target angle; a slide groove 11 is provided on the ruler body 1, a slider 3 is slidably provided in the slide groove 11, and a through hole 34 is provided on the slider 3 for installing a drawing pen; the slider 3 can be pressed and fitted with the slide groove 11 at any position in the slide groove 11.

[0027] The rotatable backing plate 2 allows the ruler body 1 to be used as a normal triangle. When a backing plate is needed, the backing plate 2 is rotated to change the angle between the backing plate 2 and the ruler body 1 to match the edge that needs to be rested on, and the locking structure is used to lock it to ensure stability during use.

[0028] Some preferred / improved embodiments based on the above embodiments will be described below. Any one of the following embodiments may be selected, or multiple embodiments may be selected and combined.

[0029] As an embodiment, the locking method of the locking device 21 is a tension-fit locking method. The locking structure includes a friction part 12 and an abutment part 211. The friction part 12 is arranged on the ruler body 1, and the abutment part 211 is arranged inside the backrest plate 2. The abutment part 211 generates friction resistance with the friction part 12 by elastic abutment or threaded tightening. The abutment part 211 applies pressure by using a threaded rod or a spring pin to contact the friction part 12, and utilizes friction resistance to limit the rotation of the backrest plate 2. If the friction part 12 has a circular outer contour, the backrest plate 2 can stay at any position within the movable range.

[0030] As an embodiment, the locking method of the locking device 21 is a tension-fit locking method. The locking structure includes a friction part 12 and an abutment part 211. The friction part 12 is arranged on the ruler body 1, and the abutment part 211 is arranged inside the backrest plate 2. The abutment part 211 generates friction resistance with the friction part 12 by elastic abutment or threaded tightening. The abutment part 211 applies pressure by using a threaded rod or a spring pin to contact the friction part 12, and utilizes friction resistance to limit the rotation of the backrest plate 2. If the friction part 12 has a circular outer contour, the backrest plate 2 can stay at any position within the movable range.

[0031] As an illustration, the spring pin can be a common spring positioning pin on the market. Although its elastic driving method has less friction resistance with the friction part 12, it does not require manual adjustment like a threaded rod, so it can also be used as a method.

[0032] At the same time, the locking method of the tension fit is not limited to the elastic tightening or thread tightening method, and the tension fit can also be achieved by using a locking structure such as a cam.

[0033] Specifically, the locking method of the locking device 21 is a screw-tightening locking method. The locking device 21 includes a first threaded rod 212, and a first threaded hole 213 that penetrates the backing plate 2 and is opened on the backing plate 2. The first threaded rod 212 is threadedly matched with the first threaded hole 213. By rotating the first threaded rod 212, one end of the first threaded rod 212 can be pressed against or separated from the ruler body 1. At the same time, the contact between the first threaded rod 212 and the ruler body 1 itself enables the angle of the backing plate 2 to be stably locked in a vertical state, and it is difficult to move without unlocking. Compared with the tension-fitting locking method, the screw-tightening locking method is more stable, but the rotation angle cannot be arbitrarily selected.

[0034] Preferably, the first threaded rod 212 needs to cooperate with the driving and tightening method, and the driving end of the first threaded rod 212 is shaped to facilitate manual tool driving, and its shape is any one of a slot, a cross slot, an internal hexagonal hole, and an external hexagonal head.

[0035] At the same time, the driving end of the first threaded rod 212 can be exposed on the backing plate 2 for manual driving, or can be hidden inside the backing plate 2 so that lines can also be drawn on this side of the backing plate 2.

[0036] Preferably, in order to facilitate drawing a circle, a plurality of circular holes 22 arranged from large to small are provided on the backing plate 2 .

[0037] As shown in the drawings, in order to prevent the backing plate 2 from interfering with the ruler body 1 during rotation, one side of the ruler body 1 where the backing plate 2 is provided is semicircular.

[0038] As a first embodiment of the slider 3, please refer to Figure 1 and 3 As shown, the present application provides an improved triangle ruler with a positioning slider 3, which mainly includes: the slider 3 includes an upper connecting block 31 and a lower connecting block 32, the upper connecting block 31 and the lower connecting block 32 are fixedly connected, the side wall of the slide groove 11 that cooperates with the slider 3 is a slope 111, and the upper connecting block 31 or the lower connecting block 32 is provided with a clamping portion 33 that cooperates with the slope 111, and the clamping portion 33 and the slope 111 are guided to be tightened or loosened by moving the slider 3 longitudinally.

[0039] Reference Figure 3As shown, the upper connecting block 31 and the lower connecting block 32 are fixedly connected by plugging, and the connecting block whose connecting portion is located on the outside has an inclination, which can cooperate with the inclined surface 111 of the side wall of the slider 3. When the slider 3 needs to be moved, the user lifts the slider 3 upward to disengage the pressing portion 33 from the inclined surface 111. At this time, the slider 3 can move freely. When the slider 3 needs to be fixed, the user presses the slider 3 downward, and the slider 3 moves longitudinally, forcing the pressing portion 33 to be tightly guided and pressed against the inclined surface 111 of the slide groove 11, so that it cannot move.

[0040] Specifically, in order to improve the stability and smoothness of the sliding of the slider 3 in the slide groove 11 and prevent it from shaking or falling off, the upper connecting block 31 and the lower connecting block 32 are respectively provided with a first flange 311 and a second flange 321, and the two sides of the slide groove 11 are provided with an upper flange groove 112 and a lower flange groove 113 that cooperate with the first flange 311 and the second flange 321.

[0041] Specifically, the depth of the lower flange groove 113 is greater than the depth of the upper flange groove 112 . The deeper lower flange groove 113 can provide space for the second flange 321 to move up and down.

[0042] Reference Figure 3 As shown, a connecting step 322 is provided on the lower connecting block 32, and the upper connecting block 31 abuts against the connecting step 322. The connecting step 322 can bear part of the force from the upper connecting block 31 when it is pressed downward, making the structure more stable.

[0043] Preferably, the upper connecting block 31 and the lower connecting block 32 are fixedly connected by any one of bonding, snapping, and screwing. For example, adhesive is applied to the contact surfaces of the two connecting blocks for bonding; or a hook and slot structure is designed for snapping.

[0044] As a second embodiment of the slider 3, please refer to Figure 4-6 As shown, the slider 3 includes an upper connecting block 31 , a lower connecting block 32 , and a driving block 35 . The driving block 35 can drive the upper connecting block 31 and the lower connecting block 32 to press or separate each other.

[0045] Different from the two connecting blocks of the first embodiment of the slider 3, the two connecting blocks of the second embodiment can be separated and pressed together. The pressing of the two connecting blocks is limited by the driving block 35. When the two connecting blocks are pressed, the slider 3 cannot move.

[0046] Reference Figure 6As shown, in order to improve the stability and smoothness of the sliding of the slider 3 in the slide groove 11 and prevent it from shaking or falling off, the upper connecting block 31 and the lower connecting block 32 are respectively provided with a first flange 311 and a second flange 321, and the two sides of the slide groove 11 are provided with an upper flange groove 112 and a lower flange groove 113 that cooperate with the first flange 311 and the second flange 321.

[0047] Specifically, the driving block 35 includes a knob 351 and a second threaded rod 352 that are connected to each other. The knob 351 is provided with a second threaded hole 3511 to cooperate with the second threaded rod 352. One end of the second threaded rod 352 is a limiting end 3521. The knob 351 and the limiting end 3521 are respectively abutted against the upper connecting block 31 and the lower connecting block 32. The knob 351 is tightened or loosened by rotating the upper connecting block 31 and the lower connecting block 32. In this way, when the knob 351 is rotated, the distance between the limiting end 3521 of the second threaded rod 352 and the knob 351 is reduced, so that the two connecting blocks are pressed tightly.

[0048] Preferably, in order to accommodate the limit end 3521 so that the limit end 3521 does not interfere with the flatness of the ruler body 1, a first groove 312 and a second groove 323 are respectively formed on the upper connecting block 31 and the lower connecting block 32, the knob 351 is arranged on the first groove 312, and the limit end 3521 is arranged in the second groove 323.

[0049] Preferably, in order to prevent the second threaded rod 352 from rotating synchronously when the knob 351 rotates, a square limiting groove 3121 is opened in the first groove 312 and the second groove 323, and a square protrusion 3522 is provided on the second threaded rod 352 to cooperate with the square limiting groove 3121.

[0050] Thus far, various embodiments of the present application have been described in detail. To avoid obscuring the concept of the present application, some details known in the art have not been described. Based on the above description, those skilled in the art will fully understand how to implement the technical solutions disclosed herein. Thus far, various embodiments of the present application have been described in detail. To avoid obscuring the concept of the present application, some details known in the art have not been described. Based on the above description, those skilled in the art will fully understand how to implement the technical solutions disclosed herein.

[0051] Finally, it should be noted that the above is only a preferred embodiment of the present application, and the aforementioned embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not drive the essence of the corresponding technical solutions away from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. An improved set square, characterized in that: include: A ruler body, wherein a backing plate is provided on any side of the ruler body for rotation, and a locking device is provided on the ruler body or the backing plate for fixing the backing plate at a target angle; The ruler body is provided with a slide groove, a slider is slidably arranged in the slide groove, and the slider is provided with a through hole for installing a drawing pen; The sliding block can be press-fitted with the sliding groove at any position in the sliding groove.

2. The improved set square according to claim 1, characterized in that: The locking method of the locking device is tension-fit locking. The locking structure includes a friction part and an abutment part. The friction part is arranged on the ruler body, and the abutment part is arranged inside the backing plate. The abutment part generates friction resistance with the friction part by elastically tightening or threaded tightening.

3. The improved set square according to claim 1, characterized in that: The locking method of the locking device is screw-tightening locking. The locking device includes a first threaded rod and a first threaded hole that penetrates the backing plate and is provided on the backing plate. The first threaded rod is threadedly engaged with the first threaded hole. By rotating the threaded rod, one end of the threaded rod can be pressed against or detached from the ruler body.

4. The improved set square according to claim 1, characterized in that: The slider includes an upper connecting block and a lower connecting block, which are fixedly connected to each other. The side wall of the slide groove that cooperates with the slider is an inclined surface. The upper connecting block or the lower connecting block is provided with a clamping part that cooperates with the inclined surface. The clamping part and the inclined surface guide are tightened or loosened by moving the slider longitudinally.

5. The improved set square according to claim 1, characterized in that: The sliding block includes an upper connecting block, a lower connecting block, and a driving block. The driving block can drive the upper connecting block and the lower connecting block to be pressed against or separated from each other.

6. The improved set square according to claim 5, characterized in that: The upper connecting block and the lower connecting block are respectively provided with a first flange and a second flange, and upper flange grooves and lower flange grooves that cooperate with the first flange and the second flange are provided on both sides of the slide groove. The upper connecting block and the lower connecting block can respectively press the upper flange groove and the lower flange groove to fix the position of the slider.

7. The improved set square according to claim 5, characterized in that: The driving block includes a knob and a second threaded rod connected to each other. A second threaded hole is provided on the knob to be threadedly connected to the second threaded rod. One end of the second threaded rod is a limiting end. The knob and the limiting end are respectively abutted against the upper connecting block and the lower connecting block. The knob is tightened or loosened by rotating the knob.

8. The improved set square according to claim 7, characterized in that: The upper connecting block and the lower connecting block are respectively provided with a first groove and a second groove, the knob is arranged on the first groove, and the limiting end is arranged in the second groove.

9. The improved set square according to claim 8, characterized in that: Square limiting grooves are provided in the first groove and the second groove, and square protrusions are provided on the second threaded rod to cooperate with the square limiting grooves.

10. The improved set square according to claim 1, characterized in that: The side of the ruler body where the backing plate is provided is semicircular.

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