Shell for protecting a watch from fragments

Abstract

The present application relates to a kind of spring ring and the watch protective shell with the spring ring, the spring ring is used to provide the pre-tightening force of watch protective shell sealing dial, the spring ring includes ring body and spring piece assembly, ring body extends along its circumference and is continuous, ring body has first surface and second surface opposite along its axial direction, spring piece assembly is connected with ring body and spring piece assembly is inclined to protrude from at least one of first surface and second surface.Elastic deformation occurs when spring piece assembly is extruded and generates the pre-tightening force along the thickness direction of dial, the pre-tightening force continuously extrudes sealing ring to make sealing ring sealing connection glass plate and dial.Due to the extension direction of sealing ring in the pre-tightening force, the pre-tightening force is better to the abutting effect of sealing ring;Meanwhile, since spring ring is abutted with dial or glass plate by ring body, contact area is larger, spring ring is not easy to slide in the direction perpendicular to the thickness of dial, leading to the dislocation of spring ring and sealing ring and then affecting the sealing effect of sealing ring.

Description

Technical Field

[0001] This invention relates to the field of watch accessories, and in particular to a spring ring and a watch case having the spring ring. Background Technology

[0002] Watches are frequently used electronic devices in daily life. Watch dials are easily damaged by drops and the screen is also prone to scratches, resulting in high repair costs. To address the issues of scratched or damaged watch dials, watch cases were developed to protect them.

[0003] Traditional watch cases typically consist of a housing that fits over the outside of the watch and a glass plate that covers the screen, thus preventing the dial from being scratched or broken. A sealing ring is also installed between the glass plate and the housing to achieve a waterproof effect.

[0004] However, in existing watch cases, the case and glass are typically secured using snap-fit ​​or screw-fix methods, resulting in a weak seal between the glass and the watch face. Poor sealing, or the seal sliding along a direction perpendicular to the watch's thickness, means that small gaps remain between the glass and the dial. Water or moisture can then seep into the dial within the case, causing the screen to fog up or even damaging the dial itself. Summary of the Invention

[0005] The present invention provides a spring ring and a watch case having the spring ring, in order to solve the problem that existing watch cases are not airtight, and moisture can seep in through the tiny gaps between the glass plate and the dial, causing damage to the watch.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A spring ring for providing preload to seal the dial of a watch case, the spring ring including a ring body and a spring assembly, the ring body extending circumferentially and continuously, the ring body having a first surface and a second surface disposed opposite to each other along its axial direction, the spring assembly being connected to the ring body, and the spring assembly obliquely protruding from at least one of the first surface and the second surface.

[0008] In one embodiment, the spring assembly includes a plurality of springs arranged at circumferential intervals along the ring body, the springs protruding obliquely from the first surface or the second surface, and the protruding surfaces of the plurality of springs may be the same or different.

[0009] In one embodiment, the portion of the spring sheet that protrudes obliquely from the first surface or the second surface extends obliquely along the circumference of the ring body.

[0010] In one embodiment, the spring assembly includes multiple spring groups, each spring group including two springs, and in any spring group, the portions of the two springs that protrude obliquely from the ring body extend in opposite directions along the circumference of the ring body.

[0011] In one embodiment, in the same set of springs, the two springs have the same tilt angle to the first surface or the second surface.

[0012] In one embodiment, in the same set of springs, the two springs are composed of elastic materials with the same elastic modulus.

[0013] In one embodiment, the portions of any two adjacent spring pieces that protrude obliquely from the ring body extend in opposite directions along the circumference of the ring body.

[0014] In one embodiment, in any of the spring groups, the distances from the two springs of the spring group to the inner wall of the ring body are equal; and / or, in any of the spring groups, the distances from the two springs of the spring group to the outer wall of the ring body are equal.

[0015] In one embodiment, the ring body includes a first side and a second side arranged opposite to each other, and a third side and a fourth side arranged opposite to each other. The spring assembly includes a first spring group and a second spring group. The two springs of the first spring group are respectively disposed on the first side and the second side, and the two springs of the second spring group are respectively disposed on the third side and the fourth side.

[0016] In one embodiment, all the springs in the spring assembly are tilted and protrude from the first surface.

[0017] In one embodiment, all the springs in the spring assembly are disposed on the inner sidewall of the ring body; or, all the springs in the spring assembly are disposed on the outer sidewall of the ring body.

[0018] In one embodiment, the ring body is circumferentially closed around its axis, and the spring extends circumferentially along the ring body to form a spring ring that is inclined to protrude from the first surface and is circumferentially closed.

[0019] In one embodiment, at least a portion of the portion of the spring that protrudes obliquely from the ring body extends in a spiral shape.

[0020] A watch case for protecting a watch dial, the watch dial having a display surface and a wear surface opposite each other along its thickness direction, the watch case comprising:

[0021] A housing is fitted onto the outer surface of the dial. The housing includes an upper housing and a lower housing. The upper housing is fitted onto the display surface, and the lower housing is fitted onto the wearable surface. The lower housing is connected to the upper housing.

[0022] A glass plate is disposed between the upper shell and the display surface;

[0023] A sealing ring is disposed between the glass plate and the display surface;

[0024] The aforementioned spring ring has two opposite sides along its axial direction abutting against the upper shell and the glass plate, respectively.

[0025] When the housing is fitted onto the outer surface of the dial, the upper housing presses the spring assembly to cause the spring assembly to undergo elastic deformation, and the spring assembly continuously presses the glass plate to cause the sealing ring to seal the glass plate and the dial.

[0026] A watch case for protecting a watch dial, the watch dial having a display surface and a wear surface opposite each other along its thickness direction, the watch case comprising:

[0027] A housing is fitted onto the outer surface of the dial. The housing includes an upper housing and a lower housing. The upper housing is fitted onto the display surface, and the lower housing is fitted onto the wearable surface. The lower housing is connected to the upper housing.

[0028] A glass plate is disposed between the upper shell and the display surface;

[0029] A sealing ring is disposed between the glass plate and the display surface;

[0030] The aforementioned spring ring has two opposite sides along its axial direction abutting against the lower shell and the wear surface, respectively.

[0031] When the housing is fitted onto the outer surface of the dial, the lower housing presses the spring assembly to cause the spring assembly to undergo elastic deformation, and the spring assembly continuously presses the dial to cause the sealing ring to seal the connection between the glass plate and the dial.

[0032] In one embodiment, the sealing ring is fixedly installed on the side of the glass plate facing the dial, so that the sealing ring will not slide relative to the glass plate on the display surface.

[0033] As can be seen from the above technical solutions, the embodiments of the present invention have at least the following advantages and positive effects:

[0034] The spring ring of this invention has a ring body and a spring assembly connected to the ring body. The spring assembly extends in an angled direction relative to the thickness of the dial. When the spring assembly is compressed, it undergoes elastic deformation, generating a preload force along the thickness of the dial. This preload force continuously compresses the sealing ring to seal the connection between the glass plate and the dial. Because the sealing ring is in the direction of the preload force, the preload force provides a better sealing effect. Simultaneously, because the spring ring abuts against the dial or glass plate through the ring body, the contact area is larger, making it less likely for the spring ring to slide in the direction perpendicular to the dial thickness, thus preventing misalignment between the spring ring and the sealing ring and affecting the sealing effect. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0036] Figure 1 This is an exploded view of the watch case and dial in an embodiment of the present invention;

[0037] Figure 2 for Figure 1 The diagram shows the overall structure of the watch case and dial.

[0038] Figure 3 for Figure 1 The diagram shows the structure of the spring ring.

[0039] Figure 4 for Figure 2 The watch case and dial shown are cross-sectional views along section line AA.

[0040] Figure 5 for Figure 4 An enlarged view of region A shown below;

[0041] Figure 6 In another embodiment Figure 1 The diagram shows the structure of the spring ring.

[0042] Figure 7 In order to be in Figure 6 In the illustrated embodiment, Figure 2 The watch case and dial shown are cross-sectional views along section line AA.

[0043] The annotations in the attached figures are explained as follows:

[0044] 1. Watch case; 2. Watch dial;

[0045] 10. Spring ring; 20. Housing; 30. Glass plate; 40. Sealing ring; 50. Display surface; 60. Wearable surface;

[0046] 110. Ring body; 111. First surface; 112. Second surface; 113. First side; 114. Second side; 115. Third side; 116. Fourth side; 120. Spring assembly; 121. Spring; 122. Spring group; 130. Spring ring; 210. Upper shell; 220. Lower shell;

[0047] F, contact force; Fa, preload force; Fb, sliding force; F1, first contact force; F1a, first preload force; F1b, first sliding force; F2, second contact force; F2a, second preload force; F2b, second sliding force. Detailed Implementation

[0048] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations herein are for illustrative purposes only and not intended to limit the present invention.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0051] Reference Figure 1 and Figure 2This invention provides a spring ring 10, which is an important component of the watch protective case 1. The watch protective case 1 is used to protect the dial 2 from scratches or damage, and the spring ring 10 is used to provide the pre-tightening force for sealing the dial 2. Specifically, the watch protective case 1 includes a spring ring 10, a housing 20, a glass plate 30, and a sealing ring 40. The housing 20 is fitted onto the outer surface of the dial 2, and the glass plate 30 is disposed between the housing 20 and the dial 2. The glass plate 30 is made of transparent glass and can protect the dial 2 from scratches without affecting the display function of the dial 2. The sealing ring 40 is disposed between the glass plate 30 and the dial 2, and the spring ring 10 is disposed inside the housing 20. When the watch protective case 1 is fitted onto the outer surface of the dial 2, the spring ring 10 is compressed by the housing 20 and undergoes elastic deformation. The spring ring 10 continuously compresses the sealing ring 40 along the thickness direction of the dial 2 to ensure a sealed connection between the glass plate 30 and the dial 2.

[0052] Reference Figure 3 , Figure 4 and Figure 5 Specifically, the spring ring 10 includes a ring body 110 and a spring assembly 120. The ring body 110 extends circumferentially and is continuous. The ring body 110 has a first surface 111 and a second surface 112 disposed opposite to each other along its axial direction. The spring assembly 120 is connected to the ring body 110 and the spring assembly 120 obliquely protrudes from at least one of the first surface 111 and the second surface 112. Specifically, in this embodiment, the spring assembly 120 obliquely protrudes from the first surface 111. In addition, the spring assembly 120 may also obliquely protrude from the second surface 112, or the spring assembly 120 may obliquely protrude from both the first surface 111 and the second surface 112 simultaneously, that is, part of the structure of the spring assembly 120 obliquely protrudes from the first surface 111 and part of the structure obliquely protrudes from the second surface 112.

[0053] It is understandable that when the watch case 1 is fitted onto the outer surface of the dial 2, the case 20 compresses the spring ring 10 to generate a contact force F on the spring assembly 120 of the spring ring 10. The contact force F can be decomposed into a preload force Fa along the thickness direction of the dial 2 and a sliding force Fb along the direction perpendicular to the thickness of the dial 2. The preload force Fa will continuously compress the sealing ring 40 to seal the connection between the glass plate 30 and the dial 2, so as to prevent moisture from entering the dial 2 from the small gap between the glass plate 30 and the sealing ring 40, which would cause the screen of the dial 2 to fog up or even be damaged. Since the sealing ring 40 is located in the extending direction of the preload Fa, the preload Fa provides a better clamping effect on the sealing ring 40. Simultaneously, because the ring body 110 abuts against the dial 2 or glass plate 30, compared to traditional spring abutment and rubber ring abutment, the spring ring 10 increases the contact area with the glass plate 30. This makes the spring ring 10 less prone to sliding in the direction perpendicular to the thickness of the dial 2, preventing misalignment between the spring ring 10 and the sealing ring 40 and thus affecting the sealing effect of the sealing ring 40. In this embodiment, the spring ring 10 is made of metal. Compared to the traditional use of rubber rings to clamp the sealing ring, the metal spring ring 10 is less prone to corrosion and deformation, extending its service life. It is understood that, without considering extending service life, the spring ring 10 can also be made of other materials.

[0054] The spring assembly 120 includes a plurality of springs 121, which are arranged at intervals along the circumference of the ring body 110. Each spring 121 protrudes obliquely from either a first surface 111 or a second surface 112. The surfaces protruding from the multiple springs 121 may be the same or different. Specifically, in this embodiment, all springs 121 in the spring assembly 120 protrude obliquely from the first surface 111. It is understood that in other embodiments, all springs 121 in the spring assembly 120 may be configured to protrude obliquely from the second surface 112, or some springs 121 in the spring assembly 120 may protrude obliquely from the first surface 111, while other springs may protrude obliquely from the second surface 112. The number of springs 121 is set to a plurality to increase the preload Fa of the spring assembly 120, thereby enhancing the sealing effect of the sealing ring 40. It is understood that in other embodiments, when increasing the preload Fa of the spring assembly 120 is not considered, the number of springs 121 may be set to one.

[0055] In this embodiment, the portion of the spring piece 121 that protrudes obliquely from the coil body 110 is a continuous linear sheet. It is understood that in other embodiments, at least a portion of the portion of the spring piece 121 that protrudes obliquely from the coil body 110 extends in a spiral shape; that is, the spiral portion of the spring piece 121 is equivalent to a spring, with the spring's axis protruding obliquely from the coil body 110. Provided that the distance the spring coil 10 is pressed by the housing 20 along the thickness direction of the dial 2 is equal, compared to a continuous linear sheet, a spiral shape of the spring piece 121 results in a larger deformation and a larger preload Fa. Furthermore, the portion of the spring piece 121 that protrudes obliquely from the coil body 110 can also be wavy, serrated, trapezoidal, etc. This invention does not impose any limitation on the shape of the portion of the spring piece 121 that protrudes obliquely from the coil body 110.

[0056] The portion of the spring piece 121 that protrudes obliquely from the first surface 111 or the second surface 112 extends obliquely along the circumference of the ring body. Specifically, in this embodiment, the spring piece assembly 120 includes a plurality of spring piece groups 122, each spring piece group 122 including two spring pieces 121. In any spring piece group 122, the portions of the two spring pieces 121 that protrude obliquely from the ring body 110 extend in opposite directions along the circumference of the ring body 110. Specifically, the two spring pieces 121 in the same spring piece group 122 extend in opposite directions and are close to each other; furthermore, the two spring pieces 121 in the same spring piece group 122 extend in opposite directions and are far apart from each other. It can be understood that in other embodiments, the spring ring 10 can be configured such that any two adjacent spring pieces 121 protrude obliquely from the ring body 110 in opposite directions along the circumference of the ring body 110.

[0057] Specifically, in any spring clip group 122, the two spring clips 121 of the spring clip group 122 are equidistant from the outer wall of the ring body 110. In this embodiment, the two spring clips 121 are equidistant from the outer wall of the ring body 110. It can be understood that in other embodiments, the two spring clips 121 in any spring clip group 122 may be configured to be equidistant from the inner wall of the ring body 110. Alternatively, the two spring clips 121 in any spring clip group 122 may be disposed between the inner wall and the outer wall of the ring body 110, with both spring clips 121 being equidistant from the inner wall and the outer wall of the ring body 110.

[0058] In this embodiment, all the spring pieces 121 in the spring piece assembly 120 are disposed on the inner sidewall of the ring body 110. It can be understood that in other embodiments, all the spring pieces 121 in the spring piece assembly 120 may be disposed on the outer sidewall of the ring body 110, or some of the spring pieces 121 in the spring piece assembly 120 may be disposed on the inner sidewall of the ring body 110, and other spring pieces 121 may be disposed on the outer sidewall of the ring body 110.

[0059] In the same spring piece group 122, the two spring pieces 121 have the same inclination angle with the first surface 111 or the second surface 112. In this embodiment, the two spring pieces 121 in the spring piece group 122 have the same inclination angle with the first surface 111. It can be understood that in the two spring pieces 121 in the same spring piece group 122, one of the spring pieces 121 is squeezed by the housing 20 to generate a first abutting force F1. The first abutting force F1 can be decomposed into a first preload force F1a along the thickness direction of the dial 2 and a first sliding force F1b along the direction perpendicular to the thickness direction of the dial 2. The first sliding force F1b will drive the spring piece ring 10 to slide along the direction perpendicular to the thickness of the dial 2, causing the spring piece ring 10 to be misaligned with the sealing ring 40 and affecting the sealing effect of the sealing ring 40. Similarly, the other spring piece 121 can generate a second abutting force F2. The second abutting force F2 can be decomposed into a second preload force F2a along the thickness direction of the dial 2 and a second sliding force F2b along the direction perpendicular to the thickness direction of the dial 2. Since the two spring pieces 121 have the same tilt angle with the first surface 111 and extend in opposite directions along the circumference of the ring body 110, the direction of the first sliding force F1b is opposite to that of the second sliding force F2b, that is, the first sliding force F1b and the second sliding force F2b at least partially cancel each other out.

[0060] Furthermore, in the same spring sheet group 122, the two spring sheets 121 in the spring sheet group 122 are composed of elastic materials with the same elastic coefficient, so that when the housing 20 compresses the spring sheet ring 10, the first sliding force F1b and the second sliding force F2b generated by the two spring sheets 121 in the same spring sheet group 122 are equal in magnitude. Since the first sliding force F1b and the second sliding force F2b are equal in magnitude and opposite in direction, the first sliding force F1b and the second sliding force F2b can cancel each other out, so as to avoid the spring sheet ring 10 sliding along the direction perpendicular to the thickness of the dial 2, and prevent the spring sheet ring 10 from sliding relative to the sealing ring 40 and causing misalignment, thereby affecting the sealing effect of the sealing ring 40.

[0061] The ring body 110 includes a first side 113 and a second side 114 arranged opposite to each other, and a third side 115 and a fourth side 116 arranged opposite to each other. The spring piece assembly 120 includes a first spring piece group and a second spring piece group. Two spring pieces 121 in the first spring piece group are respectively disposed on the first side 113 and the second side 114, and two spring pieces 121 in the second spring piece group are respectively disposed on the third side 115 and the fourth side 116. It can be understood that in other embodiments, the ring body 110 may also include a fifth side and a sixth side arranged opposite to each other, and the spring piece assembly 120 may also include a third spring piece group. Two spring pieces 121 in the third spring piece group are respectively disposed on the fifth side and the sixth side. That is, the present invention does not limit the number of sides of the ring body 110 or the number of spring pieces 121, as long as two spring pieces 121 in the same spring piece group 122 are respectively disposed on opposite sides of the ring body 110.

[0062] Reference Figure 6 and Figure 7 In one embodiment, the ring body 110 is circumferentially closed around its axis, and the spring piece 121 extends circumferentially along the ring body 110 to form a spring piece ring 130 that is inclined and protrudes from the first surface 111 and is circumferentially closed. Compared with the spring piece 121, the spring piece ring 130 is a circumferentially closed integral structure, which is not easily twisted or deformed when compressed by the housing 20, thus increasing the service life of the spring piece ring 130. At the same time, the circumferentially closed ring body 110 without gaps also avoids bending deformation at gaps.

[0063] Reference Figure 1 and Figure 2 The present invention also provides a watch protective case 1 for protecting a watch dial 2. The watch dial 2 has a display surface 50 and a wearing surface 60 opposite each other along its thickness direction. The watch protective case 1 includes the aforementioned spring ring 10, a housing 20, a glass plate 30, and a sealing ring 40. The housing 20 is fitted onto the outer surface of the watch dial 2. The glass plate 30 is disposed between the housing 20 and the display surface 50. The sealing ring 40 is disposed between the glass plate 30 and the display surface 50. The spring ring 10 is disposed inside the housing 20.

[0064] The housing 20 includes an upper housing 210 and a lower housing 220. The upper housing 210 is fitted onto the display surface 50, and the lower housing 220 is fitted onto the wear surface 60. The lower housing 220 is connected to the upper housing 210. Specifically, in this embodiment, the two ends of the spring ring 10 along its axial direction abut against the upper housing 210 and the glass plate 30, respectively. When the housing 20 is fitted onto the outer surface of the dial 2, the upper housing 210 compresses the spring ring 10 to cause the spring assembly 120 to undergo elastic deformation. The spring assembly 120 continuously compresses the glass plate 30 to cause the sealing ring 40 to seal the connection between the glass plate 30 and the dial 2. It is understood that in other embodiments, the two ends of the spring ring 10 along the axial direction can be configured to abut against the lower shell 220 and the wearing surface 60 respectively. When the shell 20 is fitted onto the outer surface of the dial 2, the lower shell 220 squeezes the spring ring 10 to cause the spring assembly 120 to undergo elastic deformation. The spring assembly 120 continuously squeezes the dial 2 to seal the sealing ring 40 to the glass plate 30 and the dial 2.

[0065] In one embodiment, the sealing ring 40 is fixedly installed on the side of the glass plate 30 facing the display surface 50 to prevent the sealing ring 40 from sliding relative to the glass plate 30 on the display surface 50. Specifically, the sealing ring 40 can be fixedly installed on the glass plate 30 by bonding, snap-fitting, screw fixing, etc. It is understood that in other embodiments, when preventing the sealing ring 40 from sliding relative to the glass plate 30 on the display surface 50 is not a consideration, the sealing ring 40 may not be fixedly installed on the glass plate 30. It is understood that the material constituting the sealing ring 40 can be rubber, silicone, polytetrafluoroethylene, etc., and the present invention does not limit the material constituting the sealing ring 40.

[0066] Although the invention has been described with reference to several typical embodiments, it should be understood that the terminology used is illustrative and exemplary, and not restrictive. Since the invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A watch case for protecting a watch dial, said dial having a display surface and a wear surface opposite each other along its thickness direction, characterized in that, The watch case includes: A housing is fitted onto the outer surface of the dial. The housing includes an upper housing and a lower housing. The upper housing is fitted onto the display surface, and the lower housing is fitted onto the wearable surface. The lower housing is connected to the upper housing. A glass plate is disposed between the upper shell and the display surface; A sealing ring is disposed between the glass plate and the display surface; A spring ring is used to provide preload force for sealing the dial of a watch case. The spring ring includes a ring body and a spring assembly. The ring body extends circumferentially and is continuous. The ring body has a first surface and a second surface disposed opposite to each other along its axial direction. The spring assembly is connected to the ring body and obliquely protrudes from at least one of the first surface and the second surface. The two axially opposite sides of the spring ring abut against the upper case and the glass plate, respectively. When the housing is fitted onto the outer surface of the dial, the upper housing presses the spring ring to cause the spring assembly to undergo elastic deformation, and the spring assembly continuously presses the glass plate to cause the sealing ring to seal the glass plate and the dial.

2. The watch case according to claim 1, characterized in that, The spring assembly includes multiple springs, which are arranged at intervals along the circumference of the ring body. The springs protrude obliquely from the first surface or the second surface, and the protruding surfaces of the multiple springs may be the same or different.

3. The watch case according to claim 2, characterized in that, The portion of the spring sheet that protrudes obliquely from the first surface or the second surface extends obliquely along the circumference of the ring body.

4. The watch case according to claim 3, characterized in that, The spring assembly includes multiple spring groups, each spring group including two springs. In any spring group, the portions of the two springs that protrude obliquely from the ring body extend in opposite directions along the circumference of the ring body.

5. The watch case according to claim 4, characterized in that, In the same set of springs, the two springs have the same tilt angle to the first surface or the second surface.

6. The watch case according to claim 5, characterized in that, In the same set of springs, the two springs are composed of elastic materials with the same elastic modulus.

7. The watch case according to claim 4, characterized in that, The portions of any two adjacent spring pieces that protrude from the ring body extend in opposite directions along the circumference of the ring body.

8. The watch case according to claim 4, characterized in that, In any of the spring groups, the distances from the two springs of the spring group to the inner wall of the ring body are equal; and / or, in any of the spring groups, the distances from the two springs of the spring group to the outer wall of the ring body are equal.

9. The watch case according to claim 4, characterized in that, The ring body includes a first side and a second side arranged opposite to each other, and a third side and a fourth side arranged opposite to each other. The spring assembly includes a first spring group and a second spring group. The two springs of the first spring group are respectively arranged on the first side and the second side, and the two springs of the second spring group are respectively arranged on the third side and the fourth side.

10. The watch case according to any one of claims 2 to 9, characterized in that, All the springs in the spring assembly are tilted and protrude from the first surface.

11. The watch case according to any one of claims 2 to 9, characterized in that, All the springs in the spring assembly are disposed on the inner sidewall of the ring body; or, all the springs in the spring assembly are disposed on the outer sidewall of the ring body.

12. The watch case according to claim 2, characterized in that, The ring body is circumferentially closed around its axis, and the spring extends circumferentially along the ring body to form a spring ring that is inclined and protrudes from the first surface and is circumferentially closed.

13. The watch case according to claim 2, characterized in that, At least a portion of the portion of the spring that protrudes obliquely from the ring body extends in a spiral shape.

14. The watch case according to claim 1, characterized in that, The sealing ring is fixedly installed on the side of the glass plate facing the display surface so that the sealing ring will not slide relative to the glass plate on the display surface.

15. A watch case for protecting a watch dial, said dial having a display surface and a wear surface opposite each other along its thickness direction, characterized in that, The watch case includes: A housing is fitted onto the outer surface of the dial. The housing includes an upper housing and a lower housing. The upper housing is fitted onto the display surface, and the lower housing is fitted onto the wearable surface. The lower housing is connected to the upper housing. A glass plate is disposed between the upper shell and the display surface; A sealing ring is disposed between the glass plate and the display surface; A spring ring is used to provide preload force for sealing the dial of a watch case. The spring ring includes a ring body and a spring assembly. The ring body extends circumferentially and is continuous. The ring body has a first surface and a second surface disposed opposite to each other along its axial direction. The spring assembly is connected to the ring body and obliquely protrudes from at least one of the first surface and the second surface. The two axially opposite sides of the spring ring abut against the lower case and the wearing surface, respectively. When the housing is fitted onto the outer surface of the dial, the lower housing presses the spring ring to cause the spring assembly to undergo elastic deformation, and the spring assembly continuously presses the dial to cause the sealing ring to seal the connection between the glass plate and the dial.

16. The watch case according to claim 15, characterized in that, The spring assembly includes multiple springs, which are arranged at intervals along the circumference of the ring body. The springs protrude obliquely from the first surface or the second surface, and the protruding surfaces of the multiple springs may be the same or different.

17. The watch case according to claim 16, characterized in that, The portion of the spring sheet that protrudes obliquely from the first surface or the second surface extends obliquely along the circumference of the ring body.

18. The watch case according to claim 17, characterized in that, The spring assembly includes multiple spring groups, each spring group including two springs. In any spring group, the portions of the two springs that protrude obliquely from the ring body extend in opposite directions along the circumference of the ring body.

19. The watch case according to claim 18, characterized in that, In the same set of springs, the two springs have the same tilt angle to the first surface or the second surface.

20. The watch case according to claim 19, characterized in that, In the same set of springs, the two springs are composed of elastic materials with the same elastic modulus.

21. The watch case according to claim 18, characterized in that, The portions of any two adjacent spring pieces that protrude from the ring body extend in opposite directions along the circumference of the ring body.

22. The watch case according to claim 19, characterized in that, In any of the spring groups, the distances from the two springs of the spring group to the inner wall of the ring body are equal; and / or, in any of the spring groups, the distances from the two springs of the spring group to the outer wall of the ring body are equal.

23. The watch case according to claim 18, characterized in that, The ring body includes a first side and a second side arranged opposite to each other, and a third side and a fourth side arranged opposite to each other. The spring assembly includes a first spring group and a second spring group. The two springs of the first spring group are respectively arranged on the first side and the second side, and the two springs of the second spring group are respectively arranged on the third side and the fourth side.

24. The watch case according to any one of claims 16 to 23, characterized in that, All the springs in the spring assembly are tilted and protrude from the first surface.

25. The watch case according to any one of claims 16 to 23, characterized in that, All the springs in the spring assembly are disposed on the inner sidewall of the ring body; or, all the springs in the spring assembly are disposed on the outer sidewall of the ring body.

26. The watch case according to claim 16, characterized in that, The ring body is circumferentially closed around its axis, and the spring extends circumferentially along the ring body to form a spring ring that is inclined and protrudes from the first surface and is circumferentially closed.

27. The watch case according to claim 16, characterized in that, At least a portion of the portion of the spring that protrudes obliquely from the ring body extends in a spiral shape.

28. The watch case according to claim 15, characterized in that, The sealing ring is fixedly installed on the side of the glass plate facing the display surface so that the sealing ring will not slide relative to the glass plate on the display surface.

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