Wrist-worn devices and their buttons

Abstract

The present invention discloses a wrist-worn device and a key, wherein the key comprises an electronic key and a key shaft, wherein the key shaft comprises a needle for triggering the electronic key and a sleeve slidably connected to the needle, and the key shaft is connected to a constraint structure; the constraint structure is used to constrain the relative position of the needle and the sleeve before the key shaft moves to a preset limit trigger position along a trigger direction; after the key shaft moves to the preset limit trigger position, there is a sliding space between the sleeve and the needle, and the sleeve can overcome the constraint of the constraint structure and slide relative to the needle when subjected to a pressing force, and the needle and the electronic key are relatively stationary. If there is an overpressure movement, the overpressure movement amount can be offset by the relative sliding between the needle and the sleeve, thereby performing overpressure protection on the electronic key, without strictly limiting the size relationship between the limit pressing amount and the preset maximum trigger movement amount of the needle as in the prior art, and the processing accuracy and assembly accuracy of each component can also be reduced accordingly.

Description

Technical Field

[0001] The present invention relates to the technical field of wrist-worn devices, and in particular to a key. In addition, the present invention also relates to a wrist-worn device comprising the key. Background Art

[0002] The key includes a key shaft 01 and an electronic key 05. Pressing the key shaft 01 moves along the triggering direction to trigger the electronic key 05. Figure 1 As shown, after the key axis 01 moves along the trigger direction from the initial position by the preset maximum trigger movement amount A1 of the key axis, it moves to the preset extreme trigger position. At this time, the electronic key 05 does not have the space to continue to move along the original direction, which is equivalent to a rigid part. If the electronic key 05 continues to deform along the trigger direction, it may cause the electronic key 05 to be damaged due to excessive deformation, and therefore the electronic key 05 needs to be protected from overvoltage.

[0003] In the prior art, the typical technical solution for preventing overpressure is to strictly ensure that the limit pressing amount C1 of the keycap 06 is less than the preset maximum trigger movement amount A1 of the key shaft. Among them, the key shaft 01 is fixed to the keycap 06, and the keycap 06 moves from the initial position to the limit pressing amount C1 and then contacts the key shell 03, so as to ensure that when the keycap 06 contacts the key shell 03, there is a safety margin between the electronic key 05 and the key shaft 01, and the key shaft 01 will not move to the preset limit trigger position.

[0004] However, this overpressure protection method has very high requirements on the assembly accuracy of the key. Each component in the key needs to be set with tolerance and assembly tolerance according to the safety margin, which makes processing and assembly difficult and imposes great restrictions on production. In addition, it is difficult to ensure overpressure protection performance by only setting the size relationship between components to prevent overpressure.

[0005] Therefore, how to reduce the difficulty of key processing while ensuring the overvoltage protection performance of the key is a technical problem that technical personnel in this field currently need to solve. Summary of the invention

[0006] In view of this, an object of the present invention is to provide a key having good overvoltage protection performance and relatively low processing difficulty. Another object of the present invention is to provide a wrist-worn device including the above-mentioned key, whose key has good overvoltage protection performance and relatively low processing difficulty.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A key, comprising an electronic key and a key shaft, wherein the key shaft comprises a needle for triggering the electronic key and a sleeve slidably connected to the needle, and the key shaft is connected with a restraining structure;

[0009] The constraint structure is used to constrain the relative position of the needle and the sleeve before the key shaft moves along the trigger direction to a preset limit trigger position;

[0010] After the button shaft moves to the preset limit trigger position, a sliding space is provided between the sleeve and the needle, and the sleeve can overcome the constraint of the constraint structure and slide relative to the needle when subjected to pressing force, and the needle and the electronic button are relatively stationary.

[0011] Preferably, the restraining structure comprises a first elastic member disposed between the needle and the sleeve, the reset force of the first elastic member causes the needle and the sleeve to tend to move away from each other, and the first elastic member is in a compressed state in an initial state.

[0012] Preferably, the constraint structure includes a first sleeve, the sleeve is inserted into the first sleeve, the sleeve and the first sleeve have an interference fit and can slide relative to each other; before the button shaft moves along the trigger direction to a preset extreme trigger position, the first sleeve abuts against the needle to make the needle move synchronously with the sleeve.

[0013] Preferably, the device further comprises a second elastic member disposed between the needle and the sleeve, wherein the restoring force of the second elastic member causes the needle and the sleeve to tend to move away from each other.

[0014] Preferably, the second elastic member is in a compressed state in an initial state.

[0015] Preferably, it also includes an elastic cantilever, which is connected between the first sleeve and the key shell, and the restoring force of the cantilever makes the first sleeve have a tendency to move away from the electronic key.

[0016] Preferably, the first sleeve is elastic, and one end of the sleeve away from the electronic key is fixedly connected to a keycap, and the keycap abuts against one end of the first sleeve away from the electronic key.

[0017] Preferably, after the key shaft moves to the preset limit trigger position, the key cap retracts into the key shell.

[0018] Preferably, the needle is provided with a needle clamping block, the sleeve is provided with a sleeve clamping block, and the sleeve clamping block is clamped between the first sleeve body and the needle clamping block.

[0019] A wrist-worn device comprises a button, wherein the button is any one of the buttons described above.

[0020] In the key provided by the present invention, the key shaft is configured to include a needle and a sleeve that are slidably connected, and a constraint structure is provided. When the trigger operation is performed, the key shaft is subjected to a pressing force and moves toward the electronic key along the trigger direction. When the key shaft has not moved to the preset limit trigger position, the positional relationship between the needle and the sleeve in the key shaft is constrained by the constraint structure to ensure that the key shaft can trigger the electronic key. If the key shaft continues to be subjected to a pressing force after moving to the preset limit trigger position, the sleeve will overcome the constraint of the constraint structure and slide relative to the needle along the trigger direction, and the needle remains stationary relative to the electronic key, thereby converting all the overpressure motion into the relative motion of the needle and the sleeve of the key shaft itself.

[0021] The key can ensure that the key shaft has a normal trigger function and can trigger the electronic key. If there is overpressure movement during the triggering process, the overpressure movement can be offset by the relative sliding between the needle and the sleeve, thereby protecting the electronic key from overpressure. The overpressure protection performance is good, and there is no need to strictly limit the size relationship between the limit pressing amount and the preset maximum trigger movement of the needle as in the prior art. The processing accuracy and assembly accuracy of each component can also be reduced accordingly, reducing the processing difficulty.

[0022] The wrist-worn device including the above-mentioned buttons provided by the present invention has good overvoltage protection performance of the buttons and is less difficult to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 It is a cross-sectional view of a typical key in the prior art;

[0025] Figure 2 A cross-sectional view of a first key provided by the present invention;

[0026] Figure 3 An exploded diagram of a second key provided by the present invention;

[0027] Figure 4 A structural diagram of the electronic key portion of the second key provided by the present invention;

[0028] Figure 5 A cross-sectional view of a portion of the structure of the second key provided by the present invention in an initial state;

[0029] Figure 6A cross-sectional view of the second key provided by the present invention in an initial state;

[0030] Figure 7 A cross-sectional view of the second type of button provided by the present invention after the needle moves to a preset limit trigger position and the second elastic member is compressed;

[0031] Figure 8 A cross-sectional view of the third key provided by the present invention in an initial state;

[0032] Fig. 9 This is a cross-sectional view of the third type of button provided by the present invention after the needle moves to a preset limit trigger position and the second elastic member is compressed.

[0033] Figure 1 middle:

[0034] 01-key axis, 03-key shell, 05-electronic key, 06-key cap, A1-key axis preset maximum trigger movement, C1-limit pressing amount;

[0035] Figures 2 to 9 middle:

[0036] 1-button axis, 101-sleeve, 102-needle, 103-second elastic member, 104-needle block, 105-sleeve block, 106-first elastic member, 2-sliding sleeve, 201-first sleeve body, 202-second sleeve body, 203-cantilever, 3-button shell, 301-mounting hole, 4-balancing sleeve, 401-balancing wall, 402-limiting groove, 403-limiting wall, 5-electronic button, 501-trigger surface, 502-electronic button body, 503-electronic button bracket, 6-keycap, 7-PCB board, A-needle preset maximum trigger movement, B-sliding space, C-limit pressing amount, D-keycap preset maximum retraction amount, E-needle preset minimum trigger movement. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The core of the present invention is to provide a key with good overvoltage protection performance and relatively low processing difficulty. Another core of the present invention is to provide a wrist-worn device including the above-mentioned key, whose key has good overvoltage protection performance and relatively low processing difficulty.

[0039] It should be noted that, for the convenience of description, the end surface of each component in the direction of the straight line where the trigger direction is located is the end surface, and the end surface in the direction perpendicular to the straight line where the trigger direction is located is the side surface, which is only used for description purposes and cannot be understood as a limitation of the present application. Figure 5 For example, the needle 102 in Figure 5 In the figure, the trigger direction is to the left, and the straight line direction where the trigger direction is located is the left-right direction. For the needle 102, the left surface and the right surface are both end surfaces, and the surface between the two end surfaces is the side surface.

[0040] In a specific embodiment of the key provided by the present invention, please refer to Figures 3 to 7 , comprising a button shell 3, a sleeve 2 and a button shaft 1, wherein the button shaft 1 is used to trigger the electronic button 5. The sleeve 2 is inserted into the mounting hole 301 of the button shell 3, and the button shaft 1 is inserted into the sleeve 2. The sleeve 2 and the button shell 3 are integrally formed, and the sleeve 2 and the button shaft 1 are interference fit. Specifically, the button may be a side button set on a wrist-worn device or a button on other devices.

[0041] It should be noted that the sliding sleeve 2 and the button shell 3 are an integrated structure formed by an integrated molding process, but in order to illustrate the specific structures of the sliding sleeve 2 and the button shell 3, the two are illustrated separately in the accompanying drawings.

[0042] In this key, the interference fit between the sleeve 2 and the key shaft 1 and the integral molding of the sleeve 2 and the key shell 3 are adopted to achieve the waterproofness of the key. There is no need to set up other components as in the prior art. It can effectively simplify the structure of the key while achieving waterproofness, which is conducive to reducing costs.

[0043] Based on the above embodiment, the sleeve 2 and the button shell 3 can be an integrated plastic part formed by a double-shot injection molding process. The button shell 3 is a hard plastic part formed by a single shot injection molding, and the sleeve 2 is a soft plastic part formed by a double shot injection molding. The hardness of the sleeve 2 is less than that of the button shell 3.

[0044] In this embodiment, the sliding sleeve 2 and the key shell 3 are processed into an integrated structure by a double-shot injection molding process. During the processing, the key shell 3 is processed by the first shot injection molding, and the sliding sleeve 2 is processed by the second shot injection molding, so that reliable waterproofing between the key shell 3 and the sliding sleeve 2 can be achieved. At the same time, the sliding sleeve 2 and the key shell 3 formed by this processing method have different hardnesses, so that the key shell 3 set on the outer layer has a strong protective effect, and the impact damage between the sliding sleeve 2 set on the inner layer and the key shaft 1 is small.

[0045] In a specific embodiment, in order to achieve 5ATM waterproof, the sliding sleeve 2 and the button shell 3 are integrally formed by a double-shot injection molding process. The sliding sleeve 2 is a soft rubber layer, and the button shell 3 is a hard rubber layer. The inner side of the sliding sleeve 2 is interference fit with the button shaft 1. The interference length along the trigger direction is 1.5mm, and the interference area between the sliding sleeve 2 and the button shaft 1 is 5mm. 2 , interference amount 0.1mm.

[0046] Of course, in other embodiments, the sliding sleeve 2 and the button may also be configured to have the same hardness, or other configurations may be performed.

[0047] Based on any of the above embodiments, please refer to Figure 3 and Figure 5 The mounting hole 301 on the button shell 3 is preferably set as a stepped hole, and the end of the mounting hole 301 close to the electronic button 5 is a small-diameter hole, and the outer side surface of the sliding sleeve 2 is a stepped surface corresponding to the mounting hole 301.

[0048] In the mounting hole 301, by setting a stepped structure, the junction between the key shell 3 and the sliding sleeve 2 can be a stepped surface, which can increase the resistance to liquid entry.

[0049] Based on any of the above embodiments, please refer to Figure 7 The key may further include a balancing wall 401 disposed between the electronic key 5 and the key shaft 1. In a direction perpendicular to the triggering direction, the area of ​​the balancing wall 401 is larger than the area of ​​the triggering surface 501 of the electronic key 5, and the key shaft 1 triggers the electronic key 5 through the balancing wall 401.

[0050] In this embodiment, a balancing wall 401 is provided between the electronic key 5 and the key shaft 1. In the direction perpendicular to the trigger direction, the area of ​​the balancing wall 401 is larger than the area of ​​the trigger surface 501 of the electronic key 5, which is equivalent to expanding the effective area of ​​the trigger surface 501 of the electronic key 5. The key shaft 1 triggers the electronic key 5 through the balancing wall 401. This arrangement is roughly equivalent to converting point-to-point contact into point-to-surface contact, which can reduce the requirements for assembly accuracy such as coaxiality between the electronic key 5 and the key shaft 1. Even if there is a certain deviation between the center lines of the trigger surface 501 of the electronic key 5 and the key shaft 1 parallel to the trigger direction, it can ensure that the key shaft 1 can trigger the electronic key 5, and the stability of key pressing can be improved, and the feel of key pressing can be optimized.

[0051] Based on the above examples, please refer to Figure 3 The balancing wall 401 can be specifically arranged on the balancing sleeve 4 , and the balancing sleeve 4 is fixedly arranged outside the electronic button 5 .

[0052] Preferably, the balancing sleeve 4 can be a plastic part with certain elasticity to reduce the impact damage between the balancing sleeve 4 and the electronic key 5. Under the pressure of the key shaft 1, the balancing wall 401 can trigger the electronic key 5 after a certain force deformation.

[0053] In this embodiment, by providing the balancing sleeve 4 , the electronic key 5 can be effectively protected, and both the electronic key 5 and the balancing sleeve 4 can be effectively positioned.

[0054] On the basis of the above embodiment, the electronic key 5 may specifically include an electronic key body 502 and an L-shaped electronic key bracket 503, the key shaft 1 is used to trigger the electronic key body 502, and the trigger surface 501 of the electronic key 5 is arranged on the electronic key body 502. Among them, the electronic key body 502 is arranged on the convex surface of the electronic key bracket 503, the concave surface of the electronic key bracket 503 is buckled on the PCB board 7, and the balance sleeve 4 is snap-connected with the electronic key bracket 503.

[0055] Specifically, the key can be a DOME key, and accordingly, the electronic key body 502 is a DOME position. The electronic key 5 can be soldered to the PCB board 7 by SMT process.

[0056] Specifically, please refer to Figure 3 and Figure 4 The electronic button bracket 503 may include a first plate and a second plate having a certain angle with the first plate to form an L-shaped structure. The electronic button 5 may be arranged in the L-shaped limiting groove 402 in the balancing sleeve 4, and the limiting wall 403 of the balancing sleeve 4 may be clamped at the free ends of the first plate and the second plate.

[0057] In this embodiment, the electronic key bracket 503 is set to an L-shaped structure, which can facilitate the fixed connection between the electronic key 5 and the PCB board 7. At the same time, the balancing sleeve 4 is directly clamped on the electronic key bracket 503, which is convenient for installation.

[0058] In a specific embodiment of the key provided by the present invention, the key shaft 1 can be a split structure, which can specifically include a needle 102 and a sleeve 101, see Figure 5 The needle 102 is used to trigger the electronic button 5 , and the sleeve 101 is slidably connected to the needle 102 .

[0059] The key shaft 1 is connected with a constraint structure, which is used to constrain the relative position of the needle 102 and the sleeve 101 before the key shaft 1 moves to a preset limit trigger position along the trigger direction, that is, the constraint structure keeps the needle 102 and the sleeve 101 relatively still and moving synchronously.

[0060] It should be noted that before the pressing operation or after the key reset movement, the key is in the initial state. Figure 3 For example, it illustrates the initial state of a key. After the needle 102 moves to the left by a preset maximum trigger movement A from the initial state position, the key axis 1 reaches the preset limit trigger position, and the electronic key 5 is deformed to the maximum allowable degree. At this time, if the key axis 1 continues to be subjected to the pressing force and performs over-pressure movement, and the key axis 1 transmits all the over-pressure movement to the electronic key 5, the electronic key 5 may be damaged due to excessive deformation.

[0061] It should be noted that, in the present application, it is not limited that the electronic key 5 can only be triggered when the key axis 1 moves to a preset limit trigger position when moving along the trigger direction. Figure 2 For example, it illustrates the initial state of a key, and the trigger direction is to the left. In a specific embodiment, when the needle 102 moves to the left by a preset minimum trigger movement amount E from the position of the initial state, it contacts the electronic key 5; the needle 102 moves to the left by a distance E from the position of the initial state and then moves a preset trigger distance, such as (AE) / 10 or (AE) / 8, that is, it moves to the preset trigger point, and the electronic key 5 is triggered; after the needle 102 moves to the left by a preset maximum trigger movement amount A from the position of the initial state, the key shaft 1 reaches the preset limit trigger position, and the electronic key 5 is deformed to the maximum allowable extent. Of course, the key shaft 1 can also trigger the electronic key 5 only when it moves to the preset limit trigger position along the trigger direction.

[0062] After the button shaft 1 moves to the preset extreme trigger position, there is a sliding space between the sleeve 101 and the needle 102. The sleeve 101 can overcome the constraint of the constraint structure and slide relative to the needle 102 when subjected to pressing force, and the needle 102 and the electronic button 5 are relatively stationary.

[0063] Please refer to Figure 2 After the needle 102 and the sleeve 101 move synchronously from the initial position to the preset limit trigger position by a distance A, even if the sleeve 101 continues to be pressed, there is a sliding space B between the needle 102 and the sleeve 101, and the needle 102 can remain stationary while the sleeve 101 slides relative to the needle 102, thereby protecting the electronic button 5 from overvoltage. The overvoltage movement will not be transmitted to the electronic button 5 but will be completely offset by the relative sliding between the needle 102 and the sleeve 101.

[0064] Preferably, the sleeve 101 is fixedly connected to the keycap 6. When the keycap 6 moves along the trigger direction to the limit pressing amount C, the keycap 6 and the key shell 3 are pressed against each other to limit the position. At this time, there is still a sliding space between the sleeve 101 and the needle 102. Accordingly, C < (A + B) to ensure that the sliding space between the sleeve 101 and the needle 102 for overpressure protection can meet the overpressure requirement. There is no strict size relationship between A and C. If A is less than C, when the keycap 6 moves to the left by A, the needle 102 moves to the preset limit trigger position. At this time, there is a sliding space B between the needle 102 and the sliding sleeve 2. Even if the keycap 6 drives the key shaft 1 to continue to move to the left until the keycap 6 and the key shell 3 are pressed against each other, there is still a relative sliding space between the needle 102 and the sliding sleeve 2.

[0065] For the embodiment with the balancing wall 401, see Figure 5 , compared to Figure 2 The embodiment shown, Figure 5 In the illustrated embodiment, a balancing wall 401 is provided between the trigger surface 501 of the electronic button 5 and the needle 102. At this time, the preset maximum trigger movement amount of the needle 102 and the preset minimum trigger movement amount of the needle 102 are not only related to the position of the electronic button 5, but also related to physical indicators such as elasticity, hardness and the like of the balancing wall 401.

[0066] When the trigger operation is performed, the key shaft 1 is subjected to the pressing force and moves toward the electronic key 5 along the trigger direction. Before the key shaft 1 moves to the preset limit trigger position, the positional relationship between the needle 102 and the sleeve 101 in the key shaft 1 is constrained by the constraint structure to ensure that the key shaft 1 can trigger the electronic key 5. If the key shaft 1 continues to be subjected to the pressing force after moving to the preset limit trigger position, the sleeve 101 will overcome the constraint of the constraint structure and slide relative to the needle 102 along the trigger direction, and the needle 102 remains stationary relative to the electronic key 5, thereby converting all the overpressure motion into the relative motion between the needle 102 and the sleeve 101 of the key shaft 1 itself.

[0067] In the key, the key shaft 1 is configured to include a needle 102 and a sleeve 101 that are slidably connected, and a constraint structure is provided, which can ensure that the key shaft 1 has a normal trigger function and can trigger the electronic key 5. If there is an overpressure movement during the triggering process, the overpressure movement can be offset by the relative sliding between the needle 102 and the sleeve 101, thereby protecting the electronic key 5 from overpressure. The overpressure protection performance is good, and there is no need to strictly limit the size relationship between the limit pressing amount and the preset maximum triggering movement of the needle 102 as in the prior art. The processing accuracy and assembly accuracy of each component can also be reduced accordingly, reducing the processing difficulty.

[0068] Based on the above examples, please refer to Figure 8 and Fig. 9The constraint structure may specifically include a first elastic member 106, which is disposed between the needle 102 and the sleeve 101, and the needle 102 and the sleeve 101 in the key shaft are respectively in contact with two ends of the first elastic member 106. The restoring force of the first elastic member 106 makes the needle 102 and the sleeve 101 tend to move away from each other, and the first elastic member 106 is in a compressed state in the initial state.

[0069] The first elastic member 106 is in a compressed state in the initial state, which can be achieved by a first limiting structure between the needle 102 and the sleeve 101, and the first limiting structure is used to prevent the needle 102 and the sleeve 101 from being separated under the action of the first elastic member 106. Optionally, the first limiting structure can be a clamping structure. In the initial state, the relative distance between the needle 102 and the sleeve 101 is the largest under the pressure of the first elastic member 106, and due to the limiting effect of the first limiting structure, the needle 102 and the sleeve 101 will not be separated.

[0070] The first elastic member 106 should be selected according to the physical indicators such as strength and stiffness of the electronic key 5 to ensure that after the key shaft 1 can trigger the electronic key 5 and moves to the preset limit trigger position, the needle 102 remains stationary while the deformation degree of the first elastic member 106 increases. Optionally, the first elastic member 106 can be a compression spring, a spring sheet or other elastic structure. For the embodiment in which the elastic balancing wall 401 is provided, the compressive deformation force of the balancing wall 401 is greater than the deformation force of the first elastic member 106 to ensure that the key shaft 1 can trigger the electronic key 5.

[0071] The restraining structure may be only the first elastic member 106 , or may be a structure in which the first elastic member 106 cooperates with other structures.

[0072] Please refer to Figure 8 When the trigger operation is performed, the sleeve 101 is subjected to pressing force, and the needle 102 and the sleeve 101 move synchronously under the constraint of the pressure of the first elastic member 106. During this process, the key shaft 1 is equivalent to a rigid rod, which can ensure that the needle 102 can trigger the electronic key 5.

[0073] Please refer to Fig. 9 After the key shaft 1 moves to the preset extreme trigger position, if the sleeve 101 is subjected to pressing force, the sleeve 101 will overcome the resistance of the first elastic member 106 and slide relative to the needle 102 along the trigger direction, so that the overpressure movement is completely converted into relative sliding between the needle 102 and the sleeve 101, and the needle 102 and the electronic key 5 remain relatively still.

[0074] In this embodiment, the first elastic member 106 realizes the restraining function, which facilitates the assembly operation of the key and helps save costs. In addition, when the user presses the key shaft 1, if the key shaft 1 performs an overpressure movement, the deformation degree of the first elastic member 106 increases, and the resistance to the finger gradually increases, which can provide a certain reminder to the user in terms of touch, reminding the user to stop the pressing operation.

[0075] In another specific embodiment, please refer to Figures 3 to 7 The constraint structure may include a first sleeve 201, and the sleeve 101 is plugged into the first sleeve 201. The sleeve 101 and the first sleeve 201 are interference fit and can move relative to each other, wherein, due to the interference fit between the sleeve 101 and the first sleeve 201, there is friction between the first sleeve 201 and the sleeve 101, and according to the relationship between the pressure on the sleeve 101 and the friction, the sleeve 101 and the first sleeve 201 are in a synchronous motion state or a relative sliding state. Before the key shaft 1 moves to the preset extreme trigger position along the trigger direction, the first sleeve 201 abuts against the needle 102, so that the needle 102 and the sleeve 101 move synchronously.

[0076] Among them, the interference fit between the first sleeve 201 and the sleeve 101, the material of the first sleeve 201, etc. need to be selected and designed accordingly according to the physical indicators such as strength and stiffness of the electronic key 5, so as to ensure that after the key shaft 1 can trigger the electronic key 5 and the key shaft 1 moves to the preset extreme trigger position, the needle 102 remains stationary while the sleeve 101 and the first sleeve 201 slide relatively.

[0077] Please refer to Figure 5 When performing the trigger operation, the first sleeve 201 is interference fit with the sleeve 101 and abuts against the needle 102. The first sleeve 201 can constrain the needle 102 to move synchronously with the sleeve 101. The sleeve 101 drives the needle 102 and the first sleeve 201 to move synchronously toward the electronic button 5. During this process, the button shaft 1 is equivalent to a rigid part, which can ensure that the needle 102 can trigger the electronic button 5.

[0078] Please refer to Figure 6 After the key shaft 1 moves to the preset extreme trigger position, if the sleeve 101 is subjected to pressing force, the sleeve 101 will overcome the friction constraint of the first sleeve 201 and slide relative to the first sleeve 201 and the needle 102, so that the overpressure movement is completely converted into relative sliding between the needle 102 and the sleeve 101, and the needle 102 and the electronic key 5 remain relatively still.

[0079] In this embodiment, the setting of the restraining structure is realized by the first sleeve body 201 , so that reliable restraint between the needle 102 and the sleeve 101 can be ensured.

[0080] Furthermore, a second elastic member 103 may be disposed between the needle 102 and the sleeve 101 , and the restoring force of the second elastic member 103 causes the needle 102 and the sleeve 101 to tend to move away from each other.

[0081] In this embodiment, if relative movement occurs between the needle 102 and the sleeve 101, the second elastic member 103 can realize automatic resetting between the needle 102 and the sleeve 101, which is convenient for operation.

[0082] Furthermore, the second elastic member 103 may be in a compressed state in the initial state, wherein the needle 102 and the sleeve 101 in the key shaft 1 abut against two ends of the second elastic member 103 respectively.

[0083] The second elastic member 103 being in a compressed state in the initial state can be specifically realized by a second limiting structure between the needle 102 and the sleeve 101, and the second limiting structure is used to prevent the needle 102 and the sleeve 101 from being separated under the action of the second elastic member 103. Optionally, the second limiting structure can be a clamping structure. In the initial state, the relative distance between the needle 102 and the sleeve 101 is the largest under the pressure of the second elastic member 103, and due to the limiting effect of the second limiting structure, the needle 102 and the sleeve 101 will not be separated.

[0084] In this embodiment, the second elastic member 103 is also a restraining structure. Since the second elastic member 103 always exerts pressure on the needle 102 and the sleeve 101, when the trigger operation is performed, the second elastic member 103 can cooperate with the first sleeve 201 to restrain the relative position of the needle 102 and the sleeve 101, so as to ensure reliable synchronous movement between the needle 102 and the sleeve 101. In addition, when the user presses the key shaft 1, if the key shaft 1 is over-pressurized, the deformation degree of the second elastic member 103 increases, and the resistance to the finger gradually increases, which can provide a certain prompting effect to the user in terms of touch, reminding the user to stop the pressing operation.

[0085] Based on any of the above embodiments, please refer to Figure 5 The key may further include an elastic cantilever 203 , which is connected between the first housing 201 and the key shell 3 . The restoring force of the cantilever 203 causes the first housing 201 to tend to move away from the electronic key 5 .

[0086] When performing a trigger operation, as the first cover 201 moves along the trigger direction, the deformation degree of the cantilever 203 gradually increases and the resistance to the pressing operation becomes greater and greater, which can prevent over-pressure movement to a certain extent; in addition, after the pressing force on the key shaft 1 is released, the reset movement of the cantilever 203 can drive the first cover 201 away from the electronic key 5 for reset, so as to realize automatic reset of the first cover 201, and at the same time drive the key shaft 1 to perform reset movement.

[0087] In this embodiment, compared with pulling out the button shaft 1 in the direction opposite to the trigger direction or other manual resetting methods, the setting of the elastic cantilever 203 can realize the automatic resetting of the first sleeve 201, which is more convenient and comfortable to use.

[0088] Based on the above embodiment, the first sleeve 201 may be elastic, and one end of the sleeve 101 away from the electronic key 5 is fixedly connected to the keycap 6 , and the keycap 6 abuts against one end of the first sleeve 201 away from the electronic key 5 .

[0089] Preferably, in the embodiment in which the sliding sleeve 2 is provided, the sliding sleeve 2 may include a first sleeve 201, a cantilever 203 and a second sleeve 202, the second sleeve 202 being fixed to the key housing 3 and provided on the outside of the first sleeve 201, and the cantilever 203 being fixedly connected between the first sleeve 201 and the second sleeve 202. Preferably, the cantilever 203 is an annular structure concentric with the first sleeve 201 and the second sleeve 202 to ensure sealing and waterproofing. Preferably, the thickness of the cantilever 203 may be less than the thickness of the first sleeve 201 and the second sleeve 202 to facilitate deformation.

[0090] Among them, preferably, the keycap 6 is abutted against the end of the first cover 201 away from the electronic key 5, and the two can fit together without a gap, thereby cooperating with the interference fit between the first cover 201 and the key shaft 1 to ensure the waterproof effect between the first cover 201 and the key shaft 1.

[0091] In this embodiment, after the key shaft 1 moves to the preset extreme trigger position, the keycap 6 continues to be pressed, the sleeve 101 slides relative to the needle 102 and the first sleeve 201, and the compression deformation of the first sleeve 201 gradually increases; after the pressing force on the keycap 6 is released, the reset movement of the cantilever 203 drives the first sleeve 201 to perform a reset movement. At the same time, the reset movement of the first sleeve 201 and the fixed connection between the sleeve 101 and the keycap 6 cause the sleeve 101 to reset relative to the first sleeve 201, and the reset movement of the second elastic member 103 causes the needle 102 and the sleeve 101 to reset relative to each other, thereby realizing the automatic reset of the sleeve 101, the keycap 6 and the first sleeve 201.

[0092] On the basis of the above embodiment, after the key shaft 1 moves to the preset limit trigger position, the key cap 6 can be retracted into the key housing 3 .

[0093] Specifically, Figure 2 For example, by selecting a suitable limit pressing amount C and the length of the sliding space B, the exposed length D of the key cap 6 in the initial state is not greater than the limit pressing amount C, thereby ensuring that the key cap 6 is completely retracted into the key shell 3.

[0094] In this embodiment, the keycap 6 can be fully retracted into the key shell 3, that is, when the keycap 6 is fully retracted into the key shell 3, it is within the overpressure protection range. It can achieve drop protection while providing overpressure protection, thereby preventing the keycap 6 from being damaged due to excessive pressing pressure from the ground when it falls, which is beneficial to extending the service life of the key.

[0095] On the basis of the above embodiment, a needle clamping block 104 may be provided on the needle 102 , a sleeve clamping block 105 may be provided on the sleeve 101 , and the sleeve clamping block 105 is sandwiched between the first sleeve body 201 and the needle clamping block 104 .

[0096] In this embodiment, the needle clamping block 104 and the sleeve clamping block 105 can be arranged to limit the position between the needle 102 and the sleeve 101 to prevent the needle 102 and the sleeve 101 from being separated under the pressure of the second elastic member 103 .

[0097] At the same time, after the pressing force on the keycap 6 is released, the sleeve 101 moves relative to the needle 102 until the sleeve block 105 and the needle block 104 abut against each other, and the sleeve 101 drives the needle 102 to reset synchronously, so that the needle 102 can be accurately and reliably reset. At the same time, the key shaft 1 has a simple structure and is easy to process.

[0098] In addition to the above-mentioned buttons, the present invention also provides a wrist-worn device, including buttons, which can be specifically the buttons provided in any of the above embodiments, and the beneficial effects can be referred to the above embodiments accordingly. Among them, the wrist-worn device can be a smart watch or a smart bracelet. Please refer to the prior art for the structure of other parts of the wrist-worn device, which will not be repeated in this article.

[0099] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0100] The wrist-worn device and its buttons provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A key, characterized in that: The electronic key (5) and a key shaft (1) are included, wherein the key shaft (1) comprises a needle (102) for triggering the electronic key (5) and a sleeve (101) slidably connected to the needle (102), and the key shaft (1) is connected to a restraining structure; The constraint structure is used to constrain the relative position of the needle (102) and the sleeve (101) before the key shaft (1) moves along the trigger direction to a preset limit trigger position; After the key shaft (1) moves to the preset limit trigger position, a sliding space is provided between the sleeve (101) and the needle (102), and the sleeve (101) can overcome the constraint of the constraint structure and slide relative to the needle (102) when subjected to a pressing force, and the needle (102) and the electronic key (5) are relatively stationary; The constraint structure comprises a first sleeve (201), the sleeve (101) is inserted into the first sleeve (201), the sleeve (101) and the first sleeve (201) are interference fit and can slide relative to each other; before the key shaft (1) moves along the trigger direction to a preset extreme trigger position, the first sleeve (201) abuts against the needle (102) so that the needle (102) and the sleeve (101) move synchronously.

2. The key according to claim 1, characterized in that: It also includes a second elastic member (103) disposed between the needle (102) and the sleeve (101), wherein the restoring force of the second elastic member (103) causes the needle (102) and the sleeve (101) to tend to move away from each other.

3. The key according to claim 2, characterized in that: The second elastic member (103) is in a compressed state in an initial state.

4. The key according to claim 3, characterized in that: It also comprises an elastic cantilever (203), the cantilever (203) being connected between the first sleeve (201) and the key shell (3), and the restoring force of the cantilever (203) causes the first sleeve (201) to have a tendency to move away from the electronic key (5).

5. The key according to claim 4, characterized in that: The first sleeve (201) is elastic, and one end of the sleeve (101) away from the electronic key (5) is fixedly connected to the key cap (6), and the key cap (6) abuts against one end of the first sleeve (201) away from the electronic key (5).

6. The key according to claim 5, characterized in that: After the key shaft (1) moves to the preset limit trigger position, the key cap (6) retracts into the key housing (3).

7. The key according to claim 5, characterized in that: The needle (102) is provided with a needle clamping block (104), the sleeve (101) is provided with a sleeve clamping block (105), and the sleeve clamping block (105) is clamped between the first sleeve body (201) and the needle clamping block (104).

8. A wrist-worn device, comprising a button, characterized in that: The key is the key described in any one of claims 1 to 7.

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