Snap spring
By designing a multi-curved retaining spring, the problem of interference between the retaining spring and the plastic cover in the process of making electric beds thinner was solved, achieving stable installation and simplified manufacturing, and adapting to the needs of different electric bed models.
Patent Information
- Application Number
- CN202520111449.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-16
AI Technical Summary
In the current design of electric beds with a focus on thinness, the retaining ring interferes with the plastic cover, making it impossible to install properly or affecting stability and safety. Furthermore, traditional processes cannot directly reduce the size of the retaining ring.
A novel snap ring has been designed, comprising first and second snap-fit portions, utilizing an elastic material and a multi-turn bend structure to provide multi-point limiting force through compression and recovery, adapting to the shape of the pin, avoiding interference with the tailstock and plastic cap, and maintaining stability.
It enables stable installation of the retaining ring on thin electric beds, avoids interference with the plastic cover, simplifies the manufacturing process, adapts to the needs of different electric bed models, and ensures stability and safety.
Smart Images
Figure CN223873603U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the field of electric bed accessories, in particular to the motor fixing accessories of electric beds. BACKGROUND
[0002] As a modern furniture, the design of electric bed not only requires comfort, but also needs to have various functions, such as electrically adjusting the height of the mattress, massage and other functions. In the electric bed, the snap spring is a commonly used mechanical fixing element, which mainly prevents the pin from falling off and ensures the stability and safety of the electric bed. The design and manufacturing process of the snap spring has a wide application in the field of mechanical engineering.
[0003] The existing snap spring design in the electric bed is usually designed for easy installation, and the size of the snap spring is relatively large to ensure that it can firmly fix the pin. This design works well on traditional electric beds, because the structure of the traditional electric bed is relatively thick, and the size of the snap spring will not be a problem. As shown in Figure 10 The main function of the snap spring 89 is to connect the motor 80 and the tail seat 83 by fixing the pin 82, preventing the pin 82 from falling off.
[0004] However, when the overall thickness of the electric bed is reduced, the plastic cover 85 will be close to the tail seat 83, and the larger size of the snap spring 89 will contact the plastic cover 85, causing interference, which will affect the stability and safety of the electric bed. In addition, due to process problems, the snap spring cannot be directly reduced. CONTENT OF THE INVENTION
[0005] The purpose of the present application is to propose an improved snap spring to adapt to the thinning challenge of electric beds, avoid interference with other components, and also consider cost, manufacturing convenience and other aspects.
[0006] To this end, some embodiments of the present application propose a snap spring, which includes a first clamping part formed in one body, a second clamping part arranged at a first angle in a first plane with the first clamping part, the first clamping part includes a first return segment, the second clamping part includes a second return segment, and a compressed size that can pass through the middle hole, the second return segment has a configuration that fits the pin.
[0007] In some embodiments, the first return segment has an initial size greater than the hole diameter of the pin,
[0008] In some embodiments, the first clamping portion comprises a first long rod segment, a second long rod segment, and a first return segment connecting the first long rod segment and the second long rod segment, the first return segment having an initial diameter greater than the hole diameter of the pin, and the first return segment is of a resilient material configured to be compressed to reduce the diameter when the first long rod segment and the second long rod segment are pressed to move towards each other, so as to be able to pass through the middle hole of the pin, and to restore to the initial diameter when the first long rod segment and the second long rod segment are no longer pressed, so that the first return segment exerts a first pressure on the middle hole of the pin in a first direction by the first long rod segment, and the second long rod segment exerts a second pressure on the middle hole of the pin in a second direction opposite to the first direction, respectively, so that at least a portion thereof is clamped in the middle hole.
[0009] In some embodiments, the first return segment is clamped in the middle hole as a whole, or a portion of the connecting segment is clamped in the middle hole as a whole.
[0010] In some embodiments, the overall length of the first clamping portion is determined to be slightly greater than the straight length of the middle hole of the pin, so that after the insertion, at least the first return segment of the first clamping portion protrudes out of the middle hole.
[0011] In some embodiments, the second clamping portion is located in the same first plane as the first clamping portion as a whole, extending from the second long rod segment; the second return segment has a configuration conforming to a first portion of the profile of the outer surface of the pin, so as to provide a third pressure required for the limiting from multiple contact points to the pin, or to provide a third pressure required for the limiting from only one contact point to the pin, so as to cooperate with the first pressure and the second pressure of the first return segment of the first clamping portion to limit the position of the clamping spring relative to the pin.
[0012] In some embodiments, the second clamping portion further comprises a third return segment adjacent to the first return segment relative to the second return segment, the third return segment having a configuration conforming to a second portion of the profile of the outer surface of the pin, so as to provide a fourth pressure required for the limiting from multiple contact points to the pin, or to provide a fourth pressure required for the limiting from only one contact point to the pin, so as to cooperate with the first pressure, the second pressure, and the third pressure of the second return segment of the first clamping portion to limit the position of the clamping spring relative to the pin, the direction of the fourth pressure provided by the third return segment being different from the direction of the third pressure.
[0013] In some embodiments, the second clamping portion further comprises a fourth return bend segment closer to the first clamping portion, the fourth return bend having a third portion conforming to the contour of the outer surface of the pin, thereby providing a fifth pressure required for limiting the position of the pin from multiple contact points, or the fourth return bend segment comprises a straight section and a bending section, the straight section being configured to provide a fifth pressure required for limiting the position of the pin from only one contact point, thereby cooperating with the first pressure of the first clamping portion, the second pressure, the third pressure of the second return bend segment, and the fourth pressure of the third return bend segment to limit the position of the clamp spring relative to the pin, the direction of the fifth pressure provided by the fourth return bend segment being different from the direction of the third pressure and the fourth pressure.
[0014] In some embodiments, the direction of the fourth return bend segment is different from the direction of the third return bend segment.
[0015] In some embodiments, a trailing section is included in the second plane with the first clamping portion, wherein the first plane and the second plane form a first included angle; the trailing section extends from the first long rod segment, and the trailing section comprises a clamping portion at a second included angle with the first long rod segment, the clamping portion being configured to be clamped to the outer contour of the tail seat or inserted into a positioning hole on the tail seat.
[0016] The beneficial effects of the present application include that the newly designed clamp spring structure is changed, so that the overall size is reduced, the maximum size after installation does not exceed the range of the tail seat, thereby increasing the distance from the plastic cover and avoiding the risk of interference with the plastic cover. In addition, the clamp spring structure of the present application is simple and easy to manufacture. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a structure perspective view of a clamp spring according to an embodiment of the present application.
[0018] Figure 2 is a schematic view of the X direction in Figure 1 .
[0019] Figure 3 is a schematic view of the Y direction in Figure 1 .
[0020] Figure 4 is a schematic view of the Z direction in Figure 1 .
[0021] Figure 5 is a schematic view of the application scenario of a clamp spring according to an embodiment of the present application.
[0022] Figure 6 is a perspective view of the cooperation between a clamp spring and a pin according to an embodiment of the present application.
[0023] Figure 7 is the end view of Figure 6 .
[0024] Figure 8 is the lateral schematic view of the snap spring and the pin after being matched according to the embodiment of the application.
[0025] Figure 9 is the schematic view of the BB surface in Figure 8 .
[0026] Figure 10 is the schematic view of the connecting structure of the prior art snap spring. DETAILED DESCRIPTION
[0027] The technical solutions of the present disclosure will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present disclosure.
[0028] In the description of the present disclosure, it should be noted that, if the terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like appear, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure. In addition, if the terms "first", "second", "third" appear, they are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0029] In the description of the present disclosure, it should be noted that, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.
[0030] Figure 1 is the schematic view of the structure of the snap spring according to the embodiment of the application, Figure 2 is the schematic view of the X direction thereof, Figure 3 is the schematic view of the Y direction thereof, Figure 4 is the schematic view of the Z direction thereof.
[0031] As can be seen from the above figure, the clamping spring 1 comprises a first clamping portion 11 formed integrally, and a second clamping portion 12 arranged in a first plane with the first clamping portion 11 at a first clamping angle, the first clamping portion 11 comprising a first return section 112 having an initial size greater than the diameter of the middle hole of the tail seat, and a compressed size capable of passing through the middle hole, and the second clamping portion 12 comprising a second return section 121 having a configuration suitable for the tail seat 2.
[0032] The first clamping portion 11 can comprise a first long rod section 111, a second long rod section 113, and a first return section 112 connecting the first long rod section 111 and the second long rod section 113, the first return section 112 having an initial diameter greater than the diameter of the center hole of the pin 21, and the first return section 112 being configured to be compressed to reduce the diameter when the first long rod section 111 and the second long rod section 113 are pressed to move towards each other, so as to be capable of passing through the middle hole of the pin 21, and to restore to the initial diameter when the first long rod section 111 and the second long rod section 113 are no longer pressed, at which time the first return section 112 exerts a first pressure on the middle hole of the pin 21 by means of the first long rod section 111 in a first direction, and the second long rod section 113 exerts a second pressure on the middle hole of the pin 21 in a second direction opposite to the first direction, so that at least a part of it is clamped in the middle hole. For example, the first return section 112 is clamped in the middle hole as a whole, or a part of the connecting section 112 is clamped in the middle hole as a whole,
[0033] The overall length of the first clamping portion 11 can be designed to be slightly greater than the length of the middle hole of the pin 2, so that after threading, at least the first return section 112 of the first clamping portion 11 protrudes out of the middle hole to enhance the clamping effect.
[0034] As Figure 6 、 Figure 7 、 Figure 8 、 Figure 9As shown, the second clamping portion 12 is integrally formed with the first clamping portion 11 in the same first plane from the second long rod segment 112. The second return segment 121 is resilient so as to be able to open and return to its original shape, thereby providing a resilient return force. The second return segment 121 can be configured to conform to a first portion of the outer surface 22 of the pin 2 so as to provide a third pressure required for the pin 2 from multiple contact points, or can be configured to provide the third pressure required for the pin 2 from only one contact point so as to cooperate with the first pressure and the second pressure of the first return segment 112 of the first clamping portion 11 to limit the position of the clip spring relative to the tail seat. That is, the second return segment 121 contacts the first portion 221 of the outer surface 22 of the pin 2 from at least one contact point so as to provide the limit of the pin 2.
[0035] As shown in FIG. 1, Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown in FIG. 1, in some embodiments, the second clamping portion 12 can further include a third return segment 122 adjacent to the first return segment 112 relative to the second return segment 121. Similar to the second return segment 121, the third return segment 122 can be configured to conform to a second portion 222 of the outer surface 22 of the pin 2 so as to provide a fourth pressure required for the pin 2 from multiple contact points, or can be configured to provide the fourth pressure required for the pin 2 from only one contact point so as to cooperate with the first pressure, the second pressure, and the third pressure of the second return segment 121 of the first clamping portion 11 to limit the position of the clip spring relative to the pin. That is, the third return segment 122 contacts the second portion of the outer surface 22 of the pin 2 from at least one contact point so as to provide the limit of the pin 2. However, the direction of the fourth pressure provided by the third return segment 122 is different from the direction of the third pressure.
[0036] As shown in FIG. 1, Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown in FIG. 1, in some embodiments, the second clamping portion 12 can further include a fourth return segment 123 more adjacent to the first clamping portion 11, similar to the second return segment 121 and the third return segment 122. The fourth return segment 123 can be configured to conform to a third portion 223 of the outer surface 22 of the pin 2 so as to provide a fifth pressure required for the pin 2 from multiple contact points. Or as shown in FIG. 1, Figure 1 , Figure 7As shown, the fourth return bend 123 can include a straight section 1231 and a bending section 1232, wherein the straight section 1231 only provides the fifth pressure required for limiting the position of the pin from one contact point to the pin so as to cooperate with the first pressure of the first clamping section 11, the second pressure, the third pressure of the second return bend 121 and the fourth pressure of the third return bend 122 to limit the position of the clamping spring relative to the pin, and the bending section 1232 provides an operating anchor point for the fourth return bend 123. Overall, the fourth return bend 123 contacts the third portion of the outer surface 22 of the pin 2 from at least one contact point to provide the limiting position relative to the pin 2. However, the direction of the fifth pressure provided by the fourth return bend 123 is different from the direction of the third pressure and the fourth pressure.
[0037] The direction of the fourth return bend 123 can be opposite to the direction of the third return bend 122.
[0038] In some embodiments, a dragging section 13 is further included in the second plane with the first clamping section 11, wherein the first plane and the second plane form a first included angle. The first included angle can be any angle, for example, it can be 90 degrees as shown. The dragging section extends from the first long rod section 111, and the dragging section 13 includes a clamping section 131 at a second included angle with the first long rod section 111, which is configured to be clamped on the outer contour of the tail seat or inserted into the positioning hole on the tail seat. The reason for setting the dragging section can be to achieve force application at two included force application points. Otherwise, if the clamping spring is in one plane and the force is in one plane, it is not easy to apply force, thereby affecting the speed of installation and disassembly. Figure 1
[0039] Figure 5 is a schematic diagram of the adapted state of the clamping spring and the pin 2.
[0040] In this application, the clamping spring as a whole can be made of elastic material, or different sections are made of different materials, only the first return bend, the second return bend, the third return bend and the fourth return bend are made of elastic material, and other parts are made of non-elastic material, or other parts are treated to have no elasticity.
[0041] The clamping spring in this application is optimized in structure to reduce the size, so that it can adapt to the space requirements of thin electric beds and avoid the problem of interference with the product. This structure is also suitable for traditional manufacturing processes, which can realize miniaturization design without reducing quality. After the structure of the clamping spring is determined, the size of different parts can be adjusted to adapt to different application requirements according to different tail seats of electric bed models and specifications or clamping of other positions.
[0042] In the design, finite element analysis and simulation technology can be used to test the mechanical properties and reliability of the optimized design of the spring, to ensure its stability and safety in practical application. Through this virtual test, potential problems can be found and solved in advance, avoiding the waste of time and cost caused by physical testing.
[0043] The above embodiments are only used to illustrate the technical solutions of the present disclosure, but not limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present disclosure.
Claims
1. A circlip, characterized by: The first clamping part (11) includes a first return bend (112), the second clamping part (12) includes a second return bend (121), and the compressed size can pass through the middle hole, and the second return bend (121) has a configuration suitable for the pin (2).
2. The clip spring of claim 1, wherein The first return bend (112) has an initial size greater than the hole diameter of the middle hole of the pin.
3. The clip spring of claim 1, wherein The first clamping part (11) includes a first long rod section (111), a second long rod section (113), and a first return bend (112) connecting the first long rod section (111) and the second long rod section (113), the first return bend (112) has an initial diameter greater than the hole diameter of the pin (2), and the first return bend (112) is made of elastic material, which is configured to be compressed and reduced in diameter when the first long rod section (111) and the second long rod section (113) are pressed and moved towards each other, so as to be able to pass through the middle hole of the pin (2), and to restore to the initial diameter when the first long rod section (111) and the second long rod section (113) are no longer pressed, so that the first return bend (112) exerts a first pressure on the middle hole of the pin by the first long rod section (111) in a first direction, and the second long rod section (113) exerts a second pressure on the middle hole of the pin in a second direction opposite to the first direction, so that at least a part of it is clamped in the middle hole.
4. The clip spring of claim 1, wherein The first return bend (112) is entirely clamped in the middle hole, or a part of the connecting section is entirely clamped in the middle hole.
5. The clip spring of claim 1, wherein The overall length of the first clamping part (11) is determined to be slightly greater than the straight length of the middle hole of the pin (2), so that after threading, at least the first return bend (112) of the first clamping part (11) protrudes out of the middle hole.
6. The clip spring of claim 3, wherein The second clamping part (12) is entirely located in the same first plane as the first clamping part (11) and extends from the second long rod section (113); the second return bend (121) has a first part conforming to the contour of the outer surface (22) of the pin (2), thereby providing a third pressure required for limiting the position of the pin from multiple contact points, or providing a third pressure required for limiting the position of the pin from only one contact point, thereby cooperating with the first pressure and the second pressure of the first return bend (112) of the first clamping part (11) to limit the position of the clamp spring relative to the pin.
7. The clip spring of claim 6, wherein The second clamping portion (12) further comprises a third return bend (122) adjacent to the first return bend (112) relative to the second return bend (121), the third return bend (122) has a configuration conforming to a second part of the contour of the outer surface (22) of the pin (2), so as to provide a fourth pressure required for limiting the position of the pin from multiple contact points, or only from one contact point, thereby cooperating with the first pressure, the second pressure, and the third pressure of the second return bend (121) to limit the position of the clamping spring relative to the pin.
8. The clip spring of claim 7, wherein The second clamping portion (12) further comprises a fourth return bend (123) adjacent to the first clamping portion (11), the fourth return bend (123) has a configuration conforming to a third part of the contour of the outer surface (22) of the pin (2), so as to provide a fifth pressure required for limiting the position of the pin from multiple contact points, or the fourth return bend (123) comprises a straight portion (1231) and a bending portion (1232), the straight portion (1231) is configured to provide a fifth pressure required for limiting the position of the pin from only one contact point, thereby cooperating with the first pressure, the second pressure, the third pressure of the second return bend (121), and the fourth pressure of the third return bend (122) to limit the position of the clamping spring relative to the pin, the direction of the fifth pressure provided by the fourth return bend (123) is different from the directions of the third pressure and the fourth pressure.
9. The clip spring of claim 8, wherein The direction of the fourth return bend is different from the direction of the third return bend.
10. The clip spring of claim 3, wherein The second clamping portion (12) further comprises a third return bend (122) adjacent to the first return bend (112) relative to the second return bend (121), the third return bend (122) has a configuration conforming to a second part of the contour of the outer surface (22) of the pin (2), so as to provide a fourth pressure required for limiting the position of the pin from multiple contact points, or only from one contact point, thereby cooperating with the first pressure, the second pressure, and the third pressure of the second return bend (121) to limit the position of the clamping spring relative to the pin. The second clamping portion (12) further comprises a third return bend (122) adjacent to the first return bend (112) relative to the second return bend (121), the third return bend (122) has a configuration conforming to a second part of the contour of the outer surface (22) of the pin (2), so as to provide a fourth pressure required for limiting the position of the pin from multiple contact points, or only from one contact point, thereby cooperating with the first pressure, the second pressure, and the third pressure of the second return bend (121) to limit the position of the clamping spring relative to the pin.