Flexible swinging compasses

Abstract

The utility model relates to the technical field of compasses, and provides a pair of flexible swinging compasses, which solves the problem that chalk is broken or touched due to design defects of the conventional compasses, and comprises a pin and a lead foot which are rotatably connected at the top, a needle head is arranged at the bottom of the pin, a flexible lead head is arranged at the bottom of the lead foot, and the flexible lead head comprises a swinging block and an elastic piece, the top of the swing block is rotationally connected with the lead foot, one end of the elastic piece is connected with the side wall of the swing block, and the other end of the elastic piece extends upwards and is connected with the side wall of the lead foot; the flexible lead head is arranged at the bottom of the lead foot of the compasses and is different from a rigid lead head of traditional compasses, and the problem that when the compasses are swung by a hand to draw a circle, chalk breakage is caused by too large pressure or chalk breakage is caused by too small pressure does not exist.

Description

Technical Field

[0001] This utility model relates to the field of compass technology, specifically to a flexible oscillating compass. Background Technology

[0002] Chinese Patent Publication No. CN219505742U discloses a compass that is easy to use in teaching. The compass includes a first leg for holding a steel needle, a second leg for holding chalk, and a central component that connects the first leg and the second leg to open and close freely. The steel needle is provided with an anti-slip sleeve, which is made of elastic material and is detachably connected to the steel needle. The second leg includes a mounting sleeve, a clamping part, a pushing part, and a tail rod sleeve.

[0003] When this utility model is used, the second leg containing chalk is rotated around the first leg containing a steel needle to draw a circle. However, since the second leg is a rigid structure, the pressure on the compass is not always consistent when the hand swings the compass to draw a circle. There may be a phenomenon where the chalk breaks due to excessive pressure or the chalk breaks due to insufficient pressure. This phenomenon exists in existing compasses. Utility Model Content

[0004] Therefore, in order to address the above problems, this utility model provides a flexible swing compass, which solves the problem of chalk breakage or disconnection caused by design defects in existing compasses.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A flexible oscillating compass includes a pin and a lead foot that are rotatably connected at the top. The pin has a needle at the bottom and the lead foot has a flexible lead head at the bottom. The flexible lead head includes an oscillating block and an elastic element. The top of the oscillating block is rotatably connected to the lead foot. One end of the elastic element is connected to the side wall of the oscillating block, and the other end of the elastic element extends upward and is connected to the side wall of the lead foot.

[0007] Furthermore, the lead foot includes a support rod and a fixing block, with the fixing block detachably connected to the bottom end of the support rod.

[0008] Furthermore, the sidewalls of the fixed block and the swing block are provided with insertion blocks, each insertion block is provided with an insertion hole, and the two ends of the elastic element are provided in each insertion hole.

[0009] Furthermore, the support rod has a mounting hole at its bottom, and the fixing block has a mounting block at its top, with the mounting block positioned inside the mounting hole.

[0010] Furthermore, the sidewall of the mounting hole is provided with at least one mounting slot, and the outer sidewall of the mounting hole is provided with a mounting assembly for adjusting the width of the mounting slot.

[0011] Furthermore, the mounting block is provided with a mounting strip that mates with the mounting seam.

[0012] Furthermore, the elastic element is rod-shaped.

[0013] Furthermore, the elastic element is sheet-like.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model features a flexible lead head at the bottom of the compass's lead foot, which differs from the rigid lead head of a traditional compass. This design prevents the chalk from breaking due to excessive pressure or breaking due to insufficient pressure when the compass is used to draw a circle.

[0016] 2. By setting a fixed block and cooperating with a flexible lead head, this utility model enables the flexible lead head proposed in this application to be compatible with compasses with detachable lead heads on the market. Users can directly purchase the combination of the fixed block and the flexible lead head to replace the rigid lead head that was originally matched with the compass. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the flexible lead head structure according to an embodiment of the present invention;

[0019] Figure 3 This is an exploded view of the flexible lead head structure according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the installation component structure in an embodiment of the present utility model.

[0021] Explanation of icon numbers

[0022] Needle 1; Needle tip 11;

[0023] 2. Lead foot; 21. Support rod; 22. Fixing block; 23. Mounting hole; 24. Mounting block; 25. Mounting seam; 26. Mounting strip;

[0024] Flexible lead head 3; swing block 31; elastic element 32;

[0025] Insertion block 4; Insertion hole 41;

[0026] Mounting component 5; mounting knob 51; mounting rod 52. Detailed Implementation

[0027] The following will describe the implementation of this utility model in detail with reference to specific embodiments, so that the process of how this utility model uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0028] Example

[0029] like Figures 1 to 4 As shown, a flexible oscillating compass includes a needle 1 and a lead foot 2 rotatably connected at the top. The needle 1 has a needle head 11 at its bottom, and the lead foot 2 has a flexible lead head 3 at its bottom. The flexible lead head 3 includes an oscillating block 31 and an elastic element 32. The top of the oscillating block 31 is rotatably connected to the lead foot 2. One end of the elastic element 32 is connected to the side wall of the oscillating block 31, and the other end of the elastic element 32 extends upward and is connected to the side wall of the lead foot 2.

[0030] In this embodiment, the lead foot 2 includes a support rod 21 and a fixing block 22. The bottom end of the support rod 21 is detachably connected to the fixing block 22, and the bottom of the fixing block 22 is rotatably connected to the flexible lead head 3.

[0031] In other preferred embodiments, the lead foot 2 may also consist only of a support rod 21, which is directly rotatably connected to the flexible lead head 3, thereby reducing the number of components in the compass.

[0032] The fixed block 22 and the swing block 31 are provided with insertion blocks 4 on their side walls. Each insertion block 4 is provided with an insertion hole 41. The two ends of the elastic element 32 are provided in each insertion hole 41. Each insertion block 4 is integrally formed with the fixed block 22 and the swing block 31. The design of providing insertion holes 41 on the insertion blocks 4 to connect the elastic element 32 can stabilize the connection between the elastic element 32 and the fixed block 22 and the swing block 31.

[0033] In this embodiment, the support rod 21 has a mounting hole 23 at its bottom, and the fixing block 22 has a mounting block 24 at its top. The mounting block 24 is located inside the mounting hole 23. The side wall of the mounting hole 23 has two mounting seams 25. The mounting block 22 has a mounting strip 26 that mates with the mounting seams 25. The outer side wall of the mounting hole 23 has a mounting assembly 5 for adjusting the width of the mounting seams 25. The mounting assembly 5 includes a mounting knob 51 and a mounting rod 52. One end of the mounting rod 52 is connected to the mounting knob 51, and the other end of the mounting rod 52 passes through the mounting hole 23 and is rotatably connected to the side wall of the mounting hole 23. The mounting knob 51 and the mounting rod 52 are threaded together. By rotating the mounting knob 51, the width of the mounting seams 25 can be adjusted, thereby controlling the mounting seams 25 to clamp the mounting strip 26, thus connecting the support rod 21 to the fixing block 22.

[0034] In other preferred embodiments, the connection can be achieved by directly embedding the top of the fixing block 22 into the mounting hole 23 without the need for the mounting block 24.

[0035] In this embodiment, the elastic element 32 is rod-shaped.

[0036] In other preferred embodiments, the elastic element 32 may also be sheet-shaped. Rod-shaped elastic elements have better flexibility, while sheet-shaped elastic elements have lower flexibility than rod-shaped ones. The choice can be made according to the actual product.

[0037] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A flexible oscillating compass, comprising a pin and a lead foot rotatably connected at the top, wherein the pin has a needle tip at the bottom, characterized in that: The bottom of the lead foot is provided with a flexible lead head, which includes a swing block and an elastic element. The top of the swing block is rotatably connected to the lead foot. One end of the elastic element is connected to the side wall of the swing block, and the other end of the elastic element extends upward and is connected to the side wall of the lead foot.

2. The flexible oscillating compass according to claim 1, characterized in that: The lead foot includes a support rod and a fixing block. The bottom end of the support rod is detachably connected to the fixing block, and the top end of the elastic element is connected to the side wall of the fixing block.

3. The flexible oscillating compass according to claim 2, characterized in that: The fixed block and the swing block are provided with insertion blocks on their side walls, and each insertion block is provided with an insertion hole. The two ends of the elastic element are located in each insertion hole.

4. The flexible oscillating compass according to claim 2, characterized in that: The support rod has a mounting hole at its bottom, and the fixing block has a mounting block at its top, with the mounting block located inside the mounting hole.

5. The flexible oscillating compass according to claim 4, characterized in that: The mounting hole sidewall is provided with at least one mounting slot, and the mounting hole outer sidewall is provided with a mounting assembly for adjusting the width of the mounting slot.

6. The flexible oscillating compass according to claim 5, characterized in that: The mounting block is provided with a mounting strip that mates with the mounting seam.

7. The flexible oscillating compass according to claim 1, characterized in that: The elastic element is rod-shaped.

8. The flexible oscillating compass according to claim 1, characterized in that: The elastic element is sheet-like.

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