A torsion spring assembly and a cup lid assembly comprising the same

Abstract

A torsion spring assembly includes: a torsion spring outer sleeve, hollow to form a cavity, the torsion spring outer sleeve including a torsion spring inner sleeve and a torsion spring outer sleeve that fit together, the torsion spring inner sleeve having an inner sleeve fixing arm, and the torsion spring outer sleeve having an outer sleeve fixing arm; a torsion spring, confined within the cavity of the torsion spring outer sleeve, the two ends of the torsion spring being respectively confined within the inner sleeve fixing arm and the outer sleeve fixing arm; when the torsion spring outer sleeve rotates relative to the torsion spring inner sleeve, it causes the two ends of the torsion spring to twist, thereby generating torque. A cup lid assembly includes a cup lid body and a top cover, the cup lid body and the top cover being connected by flipping each other via the torsion spring assembly described above. This utility model forms a circular hollow in the middle of the cross-section of the torsion spring outer sleeve, so that the torsion spring is assembled inside and can be well hidden, suitable for children or adults to use, less likely to scratch hands, effectively avoids injury to fingers or mouth, increases aesthetics, and reduces the prickly and cold feeling.

Description

Technical Field

[0001] This utility model relates to the field of maternal and infant products technology, and in particular to a torsion spring assembly and a cup lid assembly including the torsion spring assembly. Background Technology

[0002] In existing products, such as cup lids and other parts that need to be opened and closed, the opening and closing are generally achieved by torsion springs. Most existing torsion spring structures are a single spring with one end exposed on the outside, or sometimes just covered by an outer accessory.

[0003] Because most existing technologies use a spring-loaded cover with a locking mechanism for fixation, a standalone torsion spring is not only aesthetically unappealing, but its exposed end can also scratch fingers during cleaning, and assembly is relatively cumbersome. Another type of torsion spring locking structure uses a pivot pin at one end of the torsion spring, with a rib on the outside of the pivot pin that engages with the cover's locking mechanism. This method is also cumbersome to assemble, the rib is not robust enough, and it poses a safety hazard during use. Therefore, consumers have low trust in this technology, resulting in a poor user experience.

[0004] To solve the above problems, the existing technology, such as the technical solution disclosed in Chinese Patent CN202345460U, is as follows: a spring return assembly includes a spring seat, which is hollow to form an internal cavity. The front end of the internal cavity is opened to form a port, and the inner side of the rear end has a first slot; a spring cover is disposed at the port of the aforementioned spring seat to form an encapsulation body, and the inner side has a second slot; and a torsion spring is assembled in the aforementioned internal cavity and its first end is engaged in the aforementioned first slot, and its second end is engaged in the aforementioned second slot.

[0005] Although the aforementioned existing technology encapsulates the torsion spring within a package consisting of a spring seat and a spring cover, thus preventing the torsion spring from being exposed and making it less prone to dust and impurities from accumulating, resulting in a better overall appearance, it cannot be applied to everyday products such as water cups. Furthermore, due to the different fixing methods at both ends of the torsion spring, insufficient torque can easily occur. Utility Model Content

[0006] To overcome the shortcomings of existing technologies, this utility model provides a torsion spring assembly that can be assembled onto a cup lid, and features high safety, good aesthetics, and a low defect rate, as well as a cup lid assembly including the torsion spring assembly. To solve the above-mentioned technical problems, this utility model provides the following technical solution: A torsion spring assembly, comprising: The torsion spring outer sleeve is hollow to form a cavity. The torsion spring outer sleeve includes an inner torsion spring sleeve and an outer torsion spring sleeve that fit together. The inner torsion spring sleeve is provided with an inner sleeve fixing arm, and the outer torsion spring sleeve is provided with an outer sleeve fixing arm. A torsion spring is confined within the cavity of the torsion spring outer sleeve, with its two ends respectively confined within the inner sleeve fixing arm and the outer sleeve fixing arm. When the outer torsion spring sleeve rotates relative to the inner torsion spring sleeve, it causes the two ends of the torsion spring to twist, thereby generating torque.

[0007] Based on the above technical solution, the present invention may also adopt the following further technical solutions: The outer sleeve fixing arm has a first groove, the inner sleeve fixing arm has a second groove, one end of the torsion spring is limited to the first groove, and the other end of the torsion spring is limited to the second groove.

[0008] The width of the outer sleeve fixing arm is different from the width of the inner sleeve fixing arm, and the outer sleeve fixing arm and the inner sleeve fixing arm are respectively located at both ends of the torsion spring outer sleeve.

[0009] The outer sleeve fixing arm is oriented in an alternating manner with the inner sleeve fixing arm, so that the cross-section of the torsion spring outer sleeve has a Z-shaped structure.

[0010] The inner torsion spring kit has an inner groove and an inner retaining rib, and the outer torsion spring kit has an outer groove and an outer retaining rib. The inner torsion spring kit is fitted onto the outer torsion spring kit to form an inner groove and an outer retaining rib that engage with each other, and an inner retaining rib and an outer groove that engage with each other.

[0011] The inner sleeve of the torsion spring has a first pivot hole, and the outer sleeve of the torsion spring has a second pivot hole. When the inner sleeve of the torsion spring is fitted onto the outer sleeve of the torsion spring, the first pivot hole and the second pivot hole are connected to each other to form a pivot hole that passes through both ends of the outer sleeve of the torsion spring.

[0012] The torsion spring outer sleeve has a first long groove and a second long groove. The outer end of the first long groove passes through the outer end face of the torsion spring outer sleeve, and the inner end of the first long groove is connected to the first groove. The second long groove only has its outer end connected to the outer end face of the torsion spring outer sleeve.

[0013] Furthermore, this utility model also provides the following technical solutions: A cup lid assembly includes a cup lid body and a top cover. The cup lid body and the top cover are connected to each other by a torsion spring assembly as described above. The inner torsion spring is fixed to the cup lid body, and the outer torsion spring is fixed to the top cover. When the top cover is opened relative to the cup lid body, it drives the two ends of the torsion spring to rotate to generate torque.

[0014] The cup lid body is provided with a main component slot for fixing the inner torsion spring assembly, and the upper cover is provided with an upper cover slot for fixing the outer torsion spring assembly. A rotating shaft is inserted into the torsion spring assembly and connects the cup lid body and the upper cover to each other.

[0015] Compared with the prior art, the beneficial effects that this utility model can achieve are: This invention features a circular hollow center in the cross-section of the torsion spring outer sleeve, allowing the torsion spring to be assembled internally and effectively concealed. This design is suitable for children and adults, reducing the risk of scratching hands and preventing injury to fingers or mouth. Furthermore, both the inner and outer torsion spring sleeves have pivot holes for the pin to pass through. Assembly is simple: first, assemble the torsion spring with the inner and outer sleeves, then attach the torsion spring assembly as a separate accessory to the main body's pivot hole and the spring cover's pivot groove. This prevents the spring from being exposed when the spring cover is removed, avoiding the risk of sharp ends causing injury. It also prevents increased defective products due to improper spring assembly, avoids the risk of difficult assembly, and ensures the spring is concealed after assembly, enhancing aesthetics and reducing the harsh, cold feeling. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the torsion spring assembly and the cup lid assembly including the torsion spring assembly according to the present invention.

[0017] Figure 2 This is a cross-sectional view of a torsion spring assembly and a cup lid assembly including the torsion spring assembly according to the present invention.

[0018] Figure 3 This is a schematic diagram of the torsion spring assembly and the inner sleeve of the cup lid assembly including the torsion spring according to the present invention.

[0019] Figure 4 This is a schematic diagram of the torsion spring assembly and the outer sleeve of the cup lid assembly including the torsion spring according to the present invention.

[0020] Figure 5 This is a schematic diagram of an embodiment of the present invention: a torsion spring assembly and a cup lid assembly including the torsion spring assembly. Figure 1 .

[0021] Figure 6 This is a schematic diagram of an embodiment of the present invention: a torsion spring assembly and a cup lid assembly including the torsion spring assembly. Figure 2 .

[0022] Among them, torsion spring 1, torsion spring inner sleeve 2, inner sleeve fixing arm 21, second groove 22, inner slot 23, inner rib 24, first pivot hole 25, torsion spring outer sleeve 3, outer sleeve fixing arm 31, first groove 32, outer slot 33, outer rib 34, second pivot hole 35, first long groove 36, second long groove 37, cavity 4, cup lid body 5, body part slot 51, upper cover 6, upper cover slot 61, pivot 7. Detailed Implementation

[0023] The present invention provides a torsion spring assembly and a cup lid assembly including the torsion spring assembly in conjunction with the accompanying drawings.

[0024] like Figure 1 As shown, a torsion spring assembly includes a torsion spring outer sleeve and a torsion spring 1, wherein the torsion spring outer sleeve includes a torsion spring inner sleeve 2 and a torsion spring outer sleeve 3 that fit together.

[0025] Specifically, the outer sleeve of the torsion spring is hollow to form a cavity 4, and the torsion spring 1 is confined within the cavity 4 of the outer sleeve.

[0026] Furthermore, the inner torsion spring assembly 2 is provided with an inner sleeve fixing arm 21, and the outer torsion spring assembly 3 is provided with an outer sleeve fixing arm 31. The two ends of the torsion spring 1 are respectively limited within the inner sleeve fixing arm 21 and the outer sleeve fixing arm 31, so that when the outer torsion spring assembly 3 rotates relative to the inner torsion spring assembly 2, it drives the two ends of the torsion spring 1 to twist to form torque.

[0027] Furthermore, the outer sleeve fixing arm 31 has a first groove 32, the inner sleeve fixing arm 21 has a second groove 22, one end of the torsion spring 1 is limited in the first groove 32, and the other end of the torsion spring 1 is limited in the second groove 22.

[0028] Furthermore, the width of the outer fixing arm 31 is different from the width of the inner fixing arm 21 to avoid assembly errors, and the outer fixing arm 31 and the inner fixing arm 21 are respectively located at both ends of the torsion spring outer sleeve.

[0029] Furthermore, such as Figure 2 As shown, the orientation of the outer sleeve fixing arm 31 is staggered with that of the inner sleeve fixing arm 21, so that the cross-section of the torsion spring outer sleeve is a Z-shaped structure.

[0030] Furthermore, such as Figure 3-4 As shown, the inner torsion spring assembly 2 is provided with an inner groove 23 and an inner rib 24, and the outer torsion spring assembly 3 is provided with an outer groove 33 and an outer rib 34. The inner torsion spring assembly 2 is fitted onto the outer torsion spring assembly 3. At this time, the inner groove 23 and the outer rib 34 cooperate to engage with each other, and the inner rib 24 and the outer groove 33 cooperate to engage with each other.

[0031] Furthermore, the inner torsion spring sleeve 2 has a first pivot hole 25, and the outer torsion spring sleeve 3 has a second pivot hole 35. When the inner torsion spring sleeve 2 is fitted onto the outer torsion spring sleeve 3, the first pivot hole 25 and the second pivot hole 35 are interconnected to form a pivot hole that passes through both ends of the outer torsion spring sleeve.

[0032] Furthermore, the outer sleeve 3 of the torsion spring is provided with a first long groove 36 and a second long groove 37. The outer end of the first long groove 36 passes through the outer end face of the outer sleeve 3 of the torsion spring, while the inner end of the first long groove 36 is connected to the first groove 32. The second long groove 37 is only connected to the outer end face of the outer sleeve 3 of the torsion spring.

[0033] Example 1, as Figure 5-6As shown, a cup lid assembly includes a cup lid body 5 and an upper cover 6, which are connected to each other by a torsion spring assembly as described above.

[0034] Specifically, the inner torsion spring assemblies 2 are fixed to the cup lid body 5, and the outer torsion spring assemblies 3 are fixed to the upper cover 6. When the upper cover 6 is opened relative to the cup lid body 5, it drives the two ends of the torsion spring 1 to rotate to generate torque.

[0035] Furthermore, the cup lid body 5 is provided with a main body slot 51 for fixing the inner torsion spring assembly 2, and the upper cover 6 is provided with an upper cover slot 61 for fixing the outer torsion spring assembly 3. A rotating shaft 7 is inserted into the torsion spring assembly and connects the cup lid body 5 and the upper cover 6 to each other. During assembly, it is only necessary to assemble the inner sleeve of the torsion spring assembly inside the main body rotating shaft and snap the fixing arm of the outer sleeve into the rotating shaft slot of the spring cover.

[0036] Combining the Z-shaped cross-section of the torsion spring jacket, the two ends of the jacket serve as fixing arms to secure the two ends of the torsion spring 1, effectively concealing it. This design is suitable for consumers of different ages, including young children and adults, and effectively prevents injuries from the sharp edges of the torsion spring 1. When the user washes the lid, the torsion spring 1 is hidden inside and not easily touched. When the user removes the lid, the sharp part of the torsion spring assembly is concealed within the whole, reducing the risk of injury and ensuring user safety. Furthermore, this structure reduces assembly difficulty; the torsion spring assembly is a single unit that can be easily reassembled after washing. This utility model has been illustrated and described with reference to preferred embodiments; however, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A torsion spring assembly, characterized by include: The torsion spring outer sleeve is hollow to form a cavity. The torsion spring outer sleeve includes an inner torsion spring sleeve and an outer torsion spring sleeve that fit together. The inner torsion spring sleeve is provided with an inner sleeve fixing arm, and the outer torsion spring sleeve is provided with an outer sleeve fixing arm. A torsion spring is confined within the cavity of the torsion spring outer sleeve, with its two ends respectively confined within the inner sleeve fixing arm and the outer sleeve fixing arm. When the outer torsion spring sleeve rotates relative to the inner torsion spring sleeve, it causes the two ends of the torsion spring to twist, thereby generating torque.

2. A torsion spring assembly according to claim 1, characterized in that... The outer sleeve fixing arm has a first groove, the inner sleeve fixing arm has a second groove, one end of the torsion spring is limited to the first groove, and the other end of the torsion spring is limited to the second groove.

3. A torsion spring assembly according to claim 2, characterized in that... The width of the outer sleeve fixing arm is different from the width of the inner sleeve fixing arm, and the outer sleeve fixing arm and the inner sleeve fixing arm are respectively located at both ends of the torsion spring outer sleeve.

4. A torsion spring assembly according to claim 3, characterized in that... The outer sleeve fixing arm is oriented in an alternating manner with the inner sleeve fixing arm, so that the cross-section of the torsion spring outer sleeve has a Z-shaped structure.

5. A torsion spring assembly according to claim 1, characterized in that... The inner torsion spring kit has an inner groove and an inner retaining rib, and the outer torsion spring kit has an outer groove and an outer retaining rib. The inner torsion spring kit is fitted onto the outer torsion spring kit to form an inner groove and an outer retaining rib that engage with each other, and an inner retaining rib and an outer groove that engage with each other.

6. A torsion spring assembly according to claim 5, characterized in that... The inner sleeve of the torsion spring has a first pivot hole, and the outer sleeve of the torsion spring has a second pivot hole. When the inner sleeve of the torsion spring is fitted onto the outer sleeve of the torsion spring, the first pivot hole and the second pivot hole are connected to each other to form a pivot hole that passes through both ends of the outer sleeve of the torsion spring.

7. A torsion spring assembly according to claim 5, characterized in that... The torsion spring outer sleeve has a first long groove and a second long groove. The outer end of the first long groove passes through the outer end face of the torsion spring outer sleeve, and the inner end of the first long groove is connected to the first groove. The second long groove only has its outer end connected to the outer end face of the torsion spring outer sleeve.

8. A cup lid assembly, comprising a cup lid body and a top cover, characterized in that... The cup lid body and the top cover are connected to each other by a torsion spring assembly as described in any one of claims 1-7. The inner torsion spring is fixed to the cup lid body, and the outer torsion spring is fixed to the top cover. When the top cover is flipped open relative to the cup lid body, it drives the two ends of the torsion spring to rotate to generate torque.

9. A cup lid assembly according to claim 8, characterized in that... The cup lid body is provided with a main component slot for fixing the inner torsion spring assembly, and the upper cover is provided with an upper cover slot for fixing the outer torsion spring assembly. A rotating shaft is inserted into the torsion spring assembly and connects the cup lid body and the upper cover to each other.

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