A level end cap
By employing a secondary injection molding process and selecting appropriate materials, combined with the design of the support and damping components, the problem of aging and loosening of the damping components was solved, achieving stable connection and efficient production, and improving the reliability and measurement accuracy of the spirit level.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUZHOU YUXIN ELECTRONICS
- Filing Date
- 2025-10-20
- Publication Date
- 2026-07-21
AI Technical Summary
The shock-absorbing components of a spirit level are prone to aging during long-term use, which can cause them to loosen and fall off from the support, affecting their performance.
The shock absorber is fixedly connected to the support part by a connecting strip using a two-stage injection molding process. The support part is provided with vertical heat dissipation holes to improve the heat dissipation speed. The materials of the support part and the shock absorber are hard rubber and soft rubber, respectively. The support part has positioning protrusions on both sides that cooperate with the positioning holes of the shock absorber. The side grooves and the snap-fit structure with the strip enhance the connection stability.
It effectively prevents the shock absorbers from loosening and falling off, improves production efficiency and measurement accuracy, and extends the service life of the level.
Smart Images
Figure CN224535093U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of horizontal ruler end cap technology, and in particular to a horizontal ruler end cap. Background Technology
[0002] A spirit level is a common tool in our daily lives. End caps are usually installed at both ends of a spirit level to keep it level. The end caps typically consist of two parts: a support part that inserts into the end of the spirit level for support, and a shock absorber usually fitted onto the support part to reduce vibration and wear on the end of the spirit level. The shock absorber is made of soft rubber, silicone, or soft TPE material. The support part is usually made of metal or hard ABS material. The shock absorber is usually fitted onto the support part. Over time, the shock absorber ages and loosens from the support part, causing it to fall off, making the spirit level inconvenient to use. Summary of the Invention
[0003] The purpose of this application is to provide a level ruler end cap to solve the technical problem of "aging of the shock absorber, loosening of the support, and detachment of the shock absorber".
[0004] The technical solution of the end cap of the horizontal ruler provided in this application is as follows: A horizontal ruler end cap includes a support part and a shock absorber. The shock absorber is installed on the support part by secondary injection molding. The support part is provided with a horizontal cylinder and a plurality of vertical heat dissipation holes. The vertical heat dissipation holes penetrate the horizontal cylinder. The shock absorber is provided with a horizontal sleeve, which is sleeved inside the horizontal cylinder. The shock absorber is provided with a connecting rubber strip, which passes through the vertical heat dissipation holes and connects to the horizontal cylinder.
[0005] Optionally, the support material is a hard rubber material, and the shock absorber material is a soft rubber material.
[0006] Optionally, the support portion is provided with positioning protrusions on both sides, and the shock absorber is provided with positioning holes on both sides, with the positioning protrusions passing through the positioning holes.
[0007] Optionally, a side slot is provided on the side of the support portion, and a side rubber strip is provided on the shock absorber, the side rubber strip passing through the side slot.
[0008] Optionally, the support portion is provided with a plug-in portion for inserting into the level ruler, the plug-in portion is provided with a snap-fit protrusion and a limiting groove, and the snap-fit protrusion and the level ruler form a snap-fit structure.
[0009] Optionally, the insertion part has a cavity structure.
[0010] Optionally, a first limiting support strip is provided around the upper circumference of the support part, and a second limiting support strip is provided on the shock absorber. The first limiting support strip and the second limiting support strip are in contact with each other. The first limiting support strip and the second limiting support strip are used to keep the level ruler and the measuring surface at a certain distance.
[0011] In summary, this application includes at least one of the following beneficial technical effects: 1. During the production process of the level ruler end cap, the support part is first injection molded and cooled. Then, the shock absorber is installed on the support part by injection molding. During the injection molding process, the connecting strip passes through the vertical heat dissipation hole and connects with the horizontal sleeve to form an integrated structure, thereby fixing the shock absorber on the support part. This can effectively prevent the shock absorber from loosening due to aging and falling off. 2. After the support part is injection molded, the vertical heat dissipation holes penetrating the horizontal cylinder can increase the air flow speed, improve the heat dissipation speed, accelerate the cooling and solidification of the support part, and thus improve production efficiency. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the installation structure of the support, shock absorber and spirit level in an embodiment of this application; Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 3 This is a schematic diagram of the support structure according to an embodiment of this application; Figure 4 This is a schematic diagram of the shock absorber structure according to an embodiment of this application; In the figure, 1 is the support part; 11 is the horizontal cylinder; 12 is the vertical heat dissipation hole; 13 is the plug-in part; 14 is the positioning protrusion; 15 is the side slot; 16 is the snap-fit protrusion; 17 is the limiting groove; 18 is the first limiting support strip; 2 is the shock absorber; 21 is the horizontal sleeve; 22 is the connecting rubber strip; 23 is the positioning hole; 24 is the side rubber strip; and 25 is the second limiting support strip. Detailed Implementation
[0013] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 This application will be described in further detail below.
[0014] Reference Figure 1 , Figure 2 A horizontal ruler end cap includes a support part 1 and a shock absorber 2. The shock absorber 2 is installed on the support part 1 by secondary injection molding. The support part 1 is provided with a horizontal cylinder 11 and a plurality of vertical heat dissipation holes 12. The vertical heat dissipation holes 12 penetrate through the horizontal cylinder 11. The shock absorber 2 is provided with a horizontal sleeve 21, which is sleeved inside the horizontal cylinder 11. The shock absorber 2 is provided with a connecting rubber strip 22, which passes through the vertical heat dissipation holes 12 and connects to the horizontal cylinder 11.
[0015] During the production process of the horizontal ruler end cap, the support part 1 is first injection molded and cooled. Then, the shock absorber 2 is installed on the support part 1 by injection molding. During the injection molding process, the connecting strip 22 passes through the vertical heat dissipation hole 12 and connects with the horizontal sleeve 21 to form an integral structure, thereby fixing the shock absorber 2 on the support part 1. This can effectively prevent the shock absorber 2 from loosening due to aging and falling off. After injection molding, the vertical heat dissipation holes 12 penetrate the horizontal cylinder 11, which increases the airflow speed, improves heat dissipation, and accelerates the cooling and solidification of the support part 1, thereby improving production efficiency. The support part 1 is made of hard plastic material (hard plastic ABS has a wide processing temperature range, usually around 200°C - 240°C), and the shock absorber 2 is made of soft plastic material (soft plastic TPE has a processing range of 150°C - 230°C). After the support part 1 cools and solidifies, the shock absorber 2 is wrapped around the support part 1 through secondary injection molding. The connecting strip 22 is formed during the secondary injection molding process and forms an integral structure with the transverse sleeve 21, thereby making the connection more stable.
[0016] Reference Figure 2 , Figure 3 , Figure 4 The support part 1 has positioning protrusions 14 on both sides, and the shock absorber 2 has positioning holes 23 on both sides. The positioning protrusions 14 pass through the positioning holes 23, which increases the stability of the connection between the shock absorber 2 and the support part 1 and further prevents the shock absorber 21 from loosening with the support part 1.
[0017] Reference Figure 2 , Figure 3 , Figure 4 A side slot 15 is provided on the side of the support part 1, and a side rubber strip 24 is provided on the shock absorber 2. The side rubber strip 24 passes through the side slot 15. During the secondary injection molding process, the side rubber strip 24 extends through the side slot 15 into the interior of the support part 1 to form a snap-fit structure, thereby further improving the firmness of the connection between the support part 1 and the shock absorber 2, and further preventing the support part 1 and the shock absorber 2 from falling off due to loosening.
[0018] Reference Figure 2 The support part 1 is provided with a plug part 13 that is inserted into the level. The plug part 13 is provided with a snap-fit protrusion 16 and a limiting groove 17. The snap-fit protrusion 16 and the level form a snap-fit structure. The two ends of the level are sleeve structures. The sleeve is provided with a snap-fit groove that cooperates with the snap-fit protrusion 16. The sleeve is provided with a limiting strip that cooperates with the limiting groove 17. Thus, the support part 1 and the level form a stable snap-fit structure. If the end cap of the level is worn out, the end cap of the level can be replaced to ensure the accuracy of the measurement.
[0019] Reference Figure 2 The cavity structure of the plug part 13 can save materials and at the same time dissipate heat faster, thus improving production efficiency.
[0020] Reference Figure 1 , Figure 2 The support part 1 is provided with a first limiting support strip 18 around its circumference, and the shock absorber 2 is provided with a second limiting support strip 25. The first limiting support strip 18 and the second limiting support strip 25 are in contact with each other. The first limiting support strip 18 and the second limiting support strip 25 are used to keep the level ruler at a certain distance from the measuring surface. By using the first limiting support strip 18 and the second limiting support strip 25, the level ruler can maintain a certain distance from the measured surface during use, which can reduce the wear on the level ruler. By using the principle that two points determine a straight line, the situation where the level ruler cannot be in contact with the measured surface due to small protrusions can be overcome, which can effectively improve the measurement accuracy.
[0021] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.
Claims
1. A horizontal ruler end cap, comprising a support (1) and a shock absorber (2), characterized in that, The shock absorber (2) is installed on the support part (1) by secondary injection molding. The support part (1) is provided with a horizontal cylinder (11) and a plurality of vertical heat dissipation holes (12). The vertical heat dissipation holes (12) penetrate the horizontal cylinder (11). The shock absorber (2) is provided with a horizontal sleeve (21). The horizontal sleeve (21) is fitted inside the horizontal cylinder (11). The shock absorber (2) is provided with a connecting rubber strip (22). The connecting rubber strip (22) passes through the vertical heat dissipation holes (12) and connects to the horizontal cylinder (11).
2. The end cap of a horizontal ruler according to claim 1, characterized in that, The support part (1) is made of hard rubber, and the shock absorber (2) is made of soft rubber.
3. A level ruler end cap according to claim 1, characterized in that, The support (1) has positioning protrusions (14) on both sides, and the shock absorber (2) has positioning holes (23) on both sides, with the positioning protrusions (14) passing through the positioning holes (23).
4. A level ruler end cap according to claim 3, characterized in that, A side slot (15) is provided on the side of the support part (1), and a side rubber strip (24) is provided on the shock absorber (2), which passes through the side slot (15).
5. A level ruler end cap according to claim 3, characterized in that, The support part (1) is provided with a plug part (13) for inserting into the level ruler. The plug part (13) is provided with a snap-fit protrusion (16) and a limiting groove (17). The snap-fit protrusion (16) and the level ruler form a snap-fit structure.
6. A level ruler end cap according to claim 5, characterized in that, The plug-in part (13) has a cavity structure.
7. A level ruler end cap according to claim 3, characterized in that, The support part (1) is provided with a first limiting support strip (18) around its circumference, and the shock absorber (2) is provided with a second limiting support strip (25). The first limiting support strip (18) and the second limiting support strip (25) are in contact with each other. The first limiting support strip (18) and the second limiting support strip (25) are used to keep the level ruler and the measuring surface at a certain distance.