Clamp spring fixing structure

Abstract

The utility model provides a snap spring fixing structure which comprises a snap spring, the snap spring is provided with an inner side structure connected with a shaft, the inner side structure is provided with an opening end and can be arranged on the outer side of the shaft through the opening end, the snap spring fixing structure further comprises a component, the component and the snap spring are arranged front and back in the axial direction, and the component is arranged outside the shaft in a sleeved mode. The clamping spring is characterized in that an insertion fixing structure is formed between the end, opposite to the open end, of the clamping spring and the component, the clamping spring is fixed to the shaft through the insertion fixing structure in the radial direction, and axial positioning fit is formed by the inner side structure and the shaft. The clamp spring fixing structure is mainly used for a hinge of communication equipment, such as a flexible screen mobile phone hinge and other products, is suitable for small-size application, good in stability after installation, simple in manufacturing process and low in cost, and does not occupy the space between the end parts of two shafts if being applied to a double-shaft hinge.

Description

Technical Field

[0001] This utility model relates to a snap ring fixing structure, and in particular to a snap ring fixing structure used in the hinge of a mobile electronic terminal. Background Technology

[0002] The retaining rings used in the hinges of mobile electronic devices such as smartphones typically achieve radial and axial fixation by having several protrusions on the inner surface, which engage with the neck of the shaft. However, with the miniaturization of products, the size of the retaining rings has decreased, making this structure unsuitable for manufacturing due to limitations in stamping processes. Even with laser cutting, the contact area between the protrusions and the shaft becomes too small, posing a significant risk of detachment during rotation. While welding to adjacent components is also an option, the small size makes this welding prone to breakage, leading to the retaining ring easily falling off.

[0003] In a dual-axis hinge, the retaining rings on the two axes can also be connected together to improve the anti-detachment performance. However, the connection structure between the two retaining rings occupies the space between the ends of the two axes. In some cases, if the space may be used for other purposes, this retaining ring fixing structure is not suitable. Utility Model Content

[0004] The purpose of this utility model is to provide a retaining spring fixing structure, which is suitable for use in hinges with miniaturization requirements and provides good stability after installation. To this end, this utility model adopts the following technical solution:

[0005] A retaining ring fixing structure includes a retaining ring, the retaining ring having an inner structure connected to a shaft, the inner structure having an open end through which the retaining ring can pass on the outside of the shaft, the retaining ring fixing structure further including a component arranged axially in front of and behind the retaining ring, the component being sleeved on the outside of the shaft, characterized in that the retaining ring forms an insertion fixing structure with the component at the end opposite to the open end, and is radially fixed to the shaft by the insertion fixing structure, and the inner structure and the shaft form an axial positioning fit.

[0006] Based on the above technical solutions, the present invention may also adopt the following further technical solutions, or combine these technical solutions:

[0007] The insertion structure includes a groove disposed on the outer side of the opposite end and an axial protrusion disposed on the component, the axial protrusion being inserted into the groove.

[0008] The component is a cam fitted onto a shaft, and the cam cannot rotate relative to the shaft.

[0009] The component cannot rotate relative to the axis.

[0010] The component and the retaining ring are arranged adjacent to each other.

[0011] The inner structure is a slot.

[0012] The snap ring fixing structure is used in the hinge of mobile electronic terminals.

[0013] The hinge is a dual-axis hinge, with retaining springs fixed on each of the two axes, and the retaining springs on the two axes are separate.

[0014] The components on the two shafts are connected together.

[0015] The snap ring fixing structure of this utility model is mainly used in the hinges of communication equipment, such as the hinges of flexible screen mobile phones. It is suitable for small-size applications, has good stability after installation, and has a simple manufacturing process and low cost. If applied to a dual-axis hinge, it does not occupy the space between the ends of the two axes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the present invention applied to a biaxial hinge.

[0017] Figure 2 This is a structural guarantee diagram of an embodiment of the snap ring fixing structure of this utility model.

[0018] Figure 3 In order to be in Figure 1 The illustrated embodiment is a structural diagram showing the two retaining rings connected together.

[0019] Figure 4 for Figure 1 The illustrated embodiment is a schematic diagram when a multi-protrusion snap ring is used instead.

[0020] Figure 5 This is a schematic diagram of a multi-protrusion snap ring.

[0021] Figure 6 for Figure 1 The illustrated embodiment is a schematic diagram when a snap ring welding structure is used as a substitute. Detailed Implementation

[0022] Referring to the accompanying drawings, the present invention provides a retaining ring fixing structure, including a retaining ring 1. The retaining ring 1 is provided with an inner structure 11 connected to a shaft 100. The inner structure is provided with an open end 12, which can be inserted and installed on the outside of the shaft 100 through the open end 12. Preferably, the inner structure 11 of the present invention can be a retaining groove, which can be locked onto the neck of the shaft.

[0023] The retaining ring fixing structure also includes a component arranged axially in front of and behind the retaining ring. The component is a cam 2 sleeved on the shaft 100. The cam 2 can be engaged with the shaft flat and cannot rotate relative to the shaft.

[0024] The retaining ring 1 forms an insertion and fixing structure with the cam at its end opposite to the open end 12, and is radially fixed to the shaft 100 by the insertion and fixing structure, restricting the radial floating and rotation of the retaining ring. This is far more reliable than welding, and assembly is simpler and more convenient than welding. (Refer to...) Figure 6 In this embodiment, the retaining ring 1b is welded to the cam 2b, with A being the weld point. However, due to the small size of the parts, it is difficult to guarantee the welding quality and have sufficient welding surface. Furthermore, the welding process itself requires additional steps, posing a risk of weld point failure during life testing and the retaining ring 1b potentially floating out and failing. Figure 4 , 5 In the middle, the retaining ring 1a forms axial and radial positioning through multiple protrusions 11a in the inner structure. As mentioned earlier, in the case of small size, the retaining ring is at risk of floating out and failing during the life test process.

[0025] In the axial direction, the present invention forms an axial positioning fit between the inner structure and the shaft 100. For example, the neck of the shaft 100 is a groove, and the inner structure is inserted into the groove from both sides and the opposite ends of the opening end 12.

[0026] The insertion structure includes a groove 13 disposed on the outer side of the opposite end and an axial protrusion 21 disposed on the cam 2, the axial protrusion 21 being inserted into the groove 13. Of course, it can also be arranged in the opposite way. In the aforementioned embodiment, the groove 13 can be formed by stamping, or the axial protrusion can be formed on the retaining ring 1 by stamping, while a groove or hole is formed on the cam 2.

[0027] like Figure 1 As shown, the snap ring fixing structure of this utility model is applied in the hinge of a mobile electronic terminal. The hinge is a dual-axis hinge, with the snap ring fixing structure respectively installed on the two shafts 100. The snap rings 1 on the two shafts 100 are separated, while the components are connected together, that is, the two cams 2 are connected together. At this time, the flat position is not required, and the two cams 2 cannot rotate relative to the shaft 100 because they are connected together.

[0028] like Figure 3 As shown, if the retaining rings 1c on the two shafts 100 are connected together to increase the connection stability, the connection part 11c will occupy the space between the ends of the two shafts, affecting the arrangement of other structures.

[0029] The above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the protection scope of the present utility model.

[0030] It should be noted that the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. The terms "installed," "set," "equipped with," "connected," "linked," and "sleeve" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In the description of this utility model, it should be understood that the terms "one end," "the other end," "outer side," "inner side," "horizontal," "end," "length," "outer end," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are also used only for the sake of brevity in description and do not indicate or imply relative importance.

Claims

1. A clasp fixing structure comprising a clasp provided with an inner side structure connected to a shaft, said inner side structure being provided with an open end through which the outer side of said shaft is accessible, said clasp fixing structure further comprising a member provided axially forward and rearward of said clasp, said member being fitted over said shaft, characterized in that, The clamping spring forms a plug-in fixing structure between the opposite end relative to the opening end and the component, is fixed on the shaft in the radial direction by the plug-in fixing structure, and forms an axial positioning fit with the inner side structure and the shaft.

2. The clasp fixing structure according to claim 1, wherein The plug-in fixing structure comprises a groove arranged outside the opposite end and an axial protrusion arranged on the component, and the axial protrusion is inserted into the groove.

3. The clasp fixing structure according to claim 1, wherein The component is a cam sleeved on the shaft, and the cam cannot rotate relative to the shaft.

4. The clasp fixing structure according to claim 1, wherein The component cannot rotate relative to the shaft.

5. The clasp fixing structure according to claim 1, wherein The component and the clamping spring are arranged adjacently in front and back.

6. The clasp fixing structure according to claim 1, wherein The inner side structure is a clamping groove.

7. The clasp fixing structure according to claim 1, wherein The clamping spring fixing structure is applied in a hinge of a mobile electronic terminal.

8. The clasp fixing structure according to claim 7, wherein The hinge is a double-shaft hinge, the clamping spring fixing structure is arranged on each of the two shafts, and the clamping springs on the two shafts are separated.

9. The clasp fixing structure according to claim 8, wherein The components on the two shafts are connected together.

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