Key switch structure

Abstract

The utility model relates to the technical field of push switches, and discloses a button switch structure comprising a guide sleeve provided with a through hole, the hole wall of the guide sleeve is circumferentially provided with a plurality of guide grooves at intervals, and the length direction of the guide grooves extends along the axial direction; the push rod is mounted in the through hole, and the push rod is provided with a first convex part in sliding fit with the guide groove; the rotating seat is mounted in the through hole, and the rotating seat is provided with a second convex part which is in sliding fit with the guide groove; when the second convex part is located in the guide groove, the push rod is in axial pushing fit with the rotating seat; when the second convex part is separated from the guide groove, the push rod is in circumferential sliding fit with the rotating seat; the elastic piece is arranged on one side, far away from the pressing part, of the rotating seat; the base is matched with the elastic piece in a stopping manner; and the conductive piece is installed in the through hole and provided with a contact, a conductor is arranged on the rotating seat, and the conductor and the contact are in contactable conductive fit. Only the adaptability of the rotating seat and the conductive part is improved, so that a conduction circuit can be directly formed among the internal components.

Description

Technical Field

[0001] The utility model relates to the technical field of push switches, in particular to a key switch structure. Background Art

[0002] At present, the push-to-turn spring structure is widely used in products such as ballpoint pens. By pressing the key cap, the ejection state and retraction state of the pen core can be flexibly switched. Due to the complex internal design of the push-to-turn spring structure, it is difficult to directly use it as a key switch in electronic products.

[0003] For example, a Chinese utility model patent with authorization announcement number CN210489457U and authorization announcement date 2020.05.08 discloses a high-power push button switch, including a micro switch and a base, a mounting hole is provided on the base of the base, at least two guide grooves and internal teeth between the guide grooves are evenly distributed in the mounting hole, and a locking groove is provided on the top of each inner tooth, and a hook seat at one end of the press plate is clamped on the two clamping seats, and the pressing portion of the press plate corresponds to the push rod on the micro switch; guide protrusions evenly distributed on the upper part of the outer periphery of the button are arranged in the corresponding guide grooves of the mounting hole and can move axially; at least two guide convex strips are evenly distributed on the upper part of the outer periphery of the rotating shaft, and the guide shaft of the rotating shaft is installed in the guide hole in the button and can move and rotate axially relative to the button, the spring passes through the press plate and respectively presses on the micro switch and the rotating shaft, the bottom of the guide convex strip on the rotating shaft is arranged on the locking groove of the inner teeth, and the rotating shaft extends so that the pressing portion of the press plate pushes the push rod of the switch.

[0004] However, the existing high-power push button switch uses a press-and-turn spring structure to drive the moving contact to contact the static contact to form a circuit conduction. The entire push button switch is large in size, and the internal components of the press-and-turn spring structure cannot directly form a conduction circuit, making it difficult to use as a push button switch in electronic products such as styluses. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the internal components of the existing press-rotate spring structure cannot directly form a conductive circuit, and it is difficult to be used as a key switch in electronic products such as a stylus pen.

[0006] In order to solve the above technical problems, the utility model provides a key switch structure, including:

[0007] A guide sleeve, wherein the guide sleeve has a through hole, the through hole has axial and circumferential directions, a plurality of guide grooves are arranged at intervals in the circumferential direction of the hole wall of the guide sleeve, and the length direction of the guide grooves extends along the axial direction;

[0008] A push rod, the push rod is installed in the through hole, the push rod has a first convex portion that is slidably matched with the guide groove, and a pressing portion is provided at one end of the push rod away from the guide sleeve;

[0009] A rotating seat, the rotating seat is installed in the through hole, the rotating seat has a second convex portion slidingly matched with the guide groove; when the second convex portion is located in the guide groove, the push rod is axially pushed and matched with the rotating seat; when the second convex portion is separated from the guide groove, the push rod is circumferentially slidably matched with the rotating seat;

[0010] An elastic member, the elastic member is arranged on a side of the rotating seat away from the pressing portion, and the elastic force direction of the elastic member is opposite to the pushing direction;

[0011] A base, the base is fixedly mounted on the guide sleeve, and the base is engaged with the elastic member in a blocking manner;

[0012] A conductive member is installed in the through hole, and the conductive member has a contact corresponding to the rotating seat. The rotating seat is provided with a conductor, and the conductor and the contact can be in contact and conductive cooperation.

[0013] Furthermore, the conductor is fixedly installed on the side of the rotating seat facing away from the push rod, and the conductor has a plurality of metal sheets circumferentially spaced around the rotating seat. The conductor is installed at the position of the rotating seat facing away from the push rod to ensure that the axial movement and circumferential rotation requirements of the rotating seat are not affected.

[0014] Furthermore, the metal sheet and the second protrusion are arranged correspondingly along the axial direction.

[0015] Furthermore, the rotating seat has a boss on one side facing away from the push rod, and the plurality of metal sheets are respectively clamped and fixed on the circumferential surface of the boss, thereby ensuring that when the rotating seat rotates to the locking position, a reliable contact electrical connection is formed between the metal sheet and the conductive member.

[0016] Furthermore, the hole wall of the guide sleeve is provided with a plurality of slots at intervals in the circumferential direction, the slots are engaged with the second protrusions, and the slots and the guide slots are alternately arranged in the circumferential direction, so that the second protrusions can be switched between the guide slots and the slots by circumferential rotation. The engagement between the slots and the second protrusions can effectively limit the locking position of the rotating seat, thereby ensuring accurate and reliable conductive contact between the conductor and the conductive member.

[0017] Furthermore, two conductive members are provided, and the two conductive members are arranged axially corresponding to the clamping slot. When the second protrusion is in the clamping slot, it is ensured that the conductive member and the metal sheet of the rotating seat are accurately contacted to form a conducting circuit.

[0018] Furthermore, the push rod is provided with a first tooth portion on one side corresponding to the rotating seat, and the rotating seat is provided with a second tooth portion on the corresponding side, and the first tooth portion and the second tooth portion are matched in axial pushing and circumferential sliding. When the second convex portion is separated from the guide groove, the elastic force of the elastic member and the matching relationship between the first tooth portion and the second tooth portion cause relative displacement between the two tooth surfaces, thereby achieving the purpose of relative rotation of the two tooth portions in the circumferential direction, and allowing the rotating seat to flexibly switch between the guide groove and the locking position.

[0019] Furthermore, the hole wall of the guide sleeve is protrudingly provided with a guide block, and the guide block has a plurality of guide slopes on one side corresponding to the rotating seat, and the plurality of guide slopes are circumferentially spaced around the hole wall of the guide sleeve, and the guide slopes are slidably matched with the second tooth portion. When the second protrusion is separated from the guide groove, the guide slopes guide the second tooth portion, ensuring that the second protrusion smoothly enters the adjacent slot.

[0020] Furthermore, the conductive member is provided with a bent portion corresponding to the rotating seat, and the bent portion of the conductive member constitutes the contact. The contact adopts the design of the bent portion to ensure that the conductive contact is more stable.

[0021] Furthermore, the pressing part is a key cap, the key cap is mounted on the push rod, and the key cap and the guide sleeve are in clearance fit, thereby improving the comfort of the pressing operation.

[0022] Compared with the prior art, the key switch structure of the utility model has the following beneficial effects: the key switch structure adopts the design form of a guide sleeve, a push rod, a rotating seat, an elastic member, a base and a conductive member, the guide sleeve has a through hole, the hole wall of the guide sleeve is provided with a plurality of guide grooves spaced along the circumferential direction, and the length direction of the guide grooves is arranged along the axial extension, the push rod and the rotating seat are respectively installed in the through hole, the push rod has a first convex portion, the rotating seat has a second convex portion, and the first convex portion and the second convex portion are respectively slidably matched with the guide groove. When in use, applying a pressing force to the pressing portion of the push rod can drive the push rod and the rotating seat to slide and displace along the length direction of the guide groove, and can push the second convex portion of the rotating seat to a position out of the guide groove.

[0023] Since the elastic member is arranged on the side of the rotating seat away from the pressing part, the base is fixed on the guide sleeve, and the base cooperates with the elastic member to stop, the elastic member generates an elastic force opposite to the pushing direction on the rotating seat, and the elastic force can be converted into a driving force for the rotating seat to rotate in the circumferential direction, so that when the second protrusion of the rotating seat is pushed to a position away from the guide groove, the rotating seat can be driven to move in the circumferential direction relative to the push rod. In other words, through the cooperation relationship between the push rod and the rotating seat, and the elastic reset effect of the elastic member, the purpose of converting the axial pushing motion into the circumferential rotation motion is achieved.

[0024] In addition, the conductive member is installed in the through hole, and the conductive member has a contact corresponding to the rotating seat, and the rotating seat is provided with a conductor. The working process of the key switch structure is as follows: when the rotating seat is in the guide groove, the conductor of the rotating seat and the contact of the conductive member are offset, and the key switch is in the disconnected state; when the rotating seat moves axially to a critical position about to be separated from the guide groove, the conductor of the rotating seat is still offset from the contact of the conductive member and maintains the disconnected state; when the second protrusion is separated from the guide groove and rotates circumferentially to the locking position, the conductor of the rotating seat and the contact of the conductive member form a conductive contact, and the key switch is in the conducting state.

[0025] On the basis of the original push-to-rotate spring structure, only the adaptability of the rotating seat and the conductive part is improved, so that a conductive circuit can be directly formed between the internal components, avoiding the increase in the volume of the entire key switch and ensuring that it can be used as a key switch in electronic products such as styluses. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic diagram of the key switch structure in the embodiment of the utility model;

[0027] Figure 2 It is a cross-sectional schematic diagram of a guide sleeve of a key switch structure in an embodiment of the utility model;

[0028] Figure 3 This is a schematic diagram of the internal assembly of the key switch structure in the embodiment of the utility model;

[0029] Figure 4 It is a three-dimensional schematic diagram of the rotating base of the key switch structure in the embodiment of the utility model;

[0030] Figure 5 It is an isometric schematic diagram of the rotating base of the key switch structure in the embodiment of the utility model;

[0031] Figure 6 It is a cross-sectional schematic diagram of the key switch structure (when the second protrusion is located in the guide groove) in the embodiment of the utility model;

[0032] Figure 7 It is a cross-sectional schematic diagram of the key switch structure in the embodiment of the utility model (when the second protrusion is out of the guide groove);

[0033] Figure 8 It is a cross-sectional schematic diagram of the key switch structure (when the second protrusion enters the card slot) in the embodiment of the utility model;

[0034] In the figure: 1-guide sleeve, 10-through hole, 11-guide groove, 12-card slot, 13-guide block, 14-guide slope, 2-push rod, 20-pressing part, 21-first protrusion, 22-first tooth, 3-rotating seat, 30-conductor, 300-metal sheet, 31-second protrusion, 32-second tooth, 33-boss, 4-elastic member, 5-base, 6-conductive member, 60-contact, Z-axial direction, φ-circumferential direction. DETAILED DESCRIPTION

[0035] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like used in the present invention to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] like Figures 1 to 8As shown, a push switch structure of an embodiment of the utility model includes a guide sleeve 1, a push rod 2, a rotating seat 3, an elastic member 4, a base 5 and a conductive member 6. The guide sleeve 1 has a through hole 10, and the through hole 10 has an axial direction Z and a circumferential direction φ. The hole wall of the guide sleeve 1 is circumferentially provided with a plurality of guide grooves 11, and the length direction of the guide grooves 11 extends along the axial direction Z; the push rod 2 is installed in the through hole 10, and the push rod 2 has a first convex portion 21 that slides with the guide groove 11, and a pressing portion 20 is provided at one end of the push rod 2 away from the guide sleeve 1.

[0040] The rotating seat 3 is installed in the through hole 10, and the rotating seat 3 has a second protrusion 31 that slides with the guide groove 11; when the second protrusion 31 is located in the guide groove 11, the push rod 2 and the rotating seat 3 are pushed and matched along the axial direction Z; when the second protrusion 31 is separated from the guide groove 11, the push rod 2 and the rotating seat 3 are slidably matched along the circumferential direction φ; the elastic member 4 is provided on the side of the rotating seat 3 away from the pressing portion 20, and the elastic force direction of the elastic member 4 is opposite to the pushing direction; the base 5 is fixedly installed on the guide sleeve 1, and the base 5 and the elastic member 4 are stopped and matched; the conductive member 6 is installed in the through hole 10, and the conductive member 6 has a contact 60 corresponding to the rotating seat 3, and a conductor 30 is provided on the rotating seat 3, and the conductor 30 and the contact 60 can be in contact and conductively matched.

[0041] The key switch structure adopts the design form of a guide sleeve 1, a push rod 2, a rotating seat 3, an elastic member 4, a base 5 and a conductive member 6. The guide sleeve 1 has a through hole 10. The hole wall of the guide sleeve 1 is provided with a plurality of guide grooves 11 at intervals along the circumferential direction φ, and the length direction of the guide grooves 11 is arranged along the axial direction Z. The push rod 2 and the rotating seat 3 are respectively installed in the through hole 10. The push rod 2 has a first convex portion 21, and the rotating seat 3 has a second convex portion 31. The first convex portion 21 and the second convex portion 31 are respectively slidably matched with the guide groove 11. When in use, applying a pressing force to the pressing portion 20 of the push rod 2 can drive the push rod 2 and the rotating seat 3 to slide along the length direction of the guide groove 11 (i.e., the axial direction Z), and can push the second convex portion 31 of the rotating seat 3 to a position that is out of the guide groove 11.

[0042] Since the elastic member 4 is arranged on the side of the rotating seat 3 away from the pressing portion 20, the base 5 is fixed on the guide sleeve 1, and the base 5 cooperates with the elastic member 4 to stop, and the elastic member 4 is used to generate an elastic force opposite to the pushing direction on the rotating seat 3, and the elastic force can be converted into a driving force for the rotating seat 3 to rotate along the circumferential direction φ, and when the second convex portion 31 of the rotating seat 3 is pushed to a position away from the guide groove 11, the rotating seat 3 can be driven to move along the circumferential direction φ relative to the push rod 2. In other words, through the matching relationship between the push rod 2 and the rotating seat 3, and the elastic reset effect of the elastic member 4, the purpose of converting the pushing motion along the axial direction Z into the rotating motion along the circumferential direction φ is achieved.

[0043] In addition, the conductive member 6 is installed in the through hole 10, and the conductive member 6 has a contact 60 corresponding to the rotating seat 3, and the rotating seat 3 is provided with a conductor 30. The working process of the key switch structure is: when the rotating seat 3 is in the guide groove 11, as shown in FIG. Figure 6 As shown, the conductor 30 of the rotating seat 3 and the contact 60 of the conductive member 6 are staggered, and the key switch is in the off state; when the rotating seat 3 moves along the axial direction Z to a critical position about to leave the guide groove 11, as shown in FIG. Figure 7 As shown, the conductor 30 of the rotating seat 3 is still staggered with the contact 60 of the conductive member 6, and the disconnected state is maintained; when the second protrusion 31 is separated from the guide groove 11 and rotates along the circumferential direction φ to the locking position, as shown Figure 8 As shown, the conductor 30 of the rotating seat 3 forms a conductive contact with the contact 60 of the conductive member 6, and the key switch is in a conducting state at this time.

[0044] On the basis of the original push-to-rotate spring structure, only the adaptability of the rotating seat 3 and the conductive member 6 is improved, so that a conductive circuit can be directly formed between the internal components, avoiding an increase in the volume of the entire key switch and ensuring that it can be used as a key switch in electronic products such as a stylus pen.

[0045] In this embodiment, the conductor 30 is fixedly mounted on the side of the rotating seat 3 facing away from the push rod 2. Figure 4 , Figure 5 As shown, the conductor 30 has a plurality of metal sheets 300 distributed at intervals around the rotating seat 3 in the circumferential direction. The conductor 30 is installed at a position of the rotating seat 3 facing away from the push rod 2, ensuring that the requirements of the axial Z movement and circumferential φ rotation of the rotating seat 3 are not affected. The metal sheet 300 and the second convex portion 31 are arranged correspondingly along the axial Z, and the rotating seat 3 has a boss 33 on one side facing away from the push rod 2. The plurality of metal sheets 300 are respectively clamped and fixed on the circumferential surface of the boss 33, ensuring that when the rotating seat 3 rotates to the locked position, a reliable contact electrical connection is formed between the metal sheet 300 and the conductive member 6.

[0046] As a further preferred solution, the hole wall of the guide sleeve 1 is provided with a plurality of slots 12 at intervals in the circumferential direction, and the slots 12 are engaged with the second protrusion 31, and the slots 12 and the guide groove 11 are alternately arranged in the circumferential direction, so that the second protrusion 31 can rotate circumferentially and switch between the guide groove 11 and the slots 12. The engagement of the slots 12 and the second protrusion 31 can effectively limit the locking position of the rotating seat 3, ensuring that the conductor 30 and the conductive member 6 are in accurate and reliable conductive contact. There are two conductive members 6, and the conductive members 6 and the slots 12 are arranged correspondingly along the axial direction Z. When the second protrusion 31 is in the slots 12, it is ensured that the conductive member 6 is in accurate contact with the metal sheet 300 of the rotating seat 3 to form a conductive circuit.

[0047] The push rod 2 is provided with a first tooth portion 22 on one side corresponding to the rotating seat 3, and the rotating seat 3 is provided with a second tooth portion 32 on the corresponding side. Figure 3 As shown, the first tooth portion 22 and the second tooth portion 32 are pushed together in the axial direction Z and slidably together in the circumferential direction φ. When the second protrusion 31 is separated from the guide groove 11, the elastic force of the elastic member 4 and the matching relationship between the first tooth portion 22 and the second tooth portion 32 cause a relative displacement between the two tooth surfaces, thereby achieving the purpose of relative rotation of the two tooth portions along the circumferential direction φ, so that the rotating seat 3 can be flexibly switched between the guide groove 11 and the locking position.

[0048] Among them, the hole wall of the guide sleeve 1 is protruded with a guide block 13, and the side of the guide block 13 corresponding to the rotating seat 3 has a plurality of guide slopes 14, and the plurality of guide slopes 14 are distributed around the hole wall of the guide sleeve 1 in an interval manner, and the guide slopes 14 are slidably matched with the second tooth portion 32. Since the side of the guide block 13 corresponding to the rotating seat 3 has the guide slope 14, when the second protrusion 31 is separated from the guide groove 11, the guide slope 14 has a guiding effect on the second tooth portion 32, ensuring that the second protrusion 31 smoothly enters the adjacent slot 12.

[0049] In addition, the conductive member 6 is provided with a bent portion corresponding to the rotating seat 3, and the bent portion of the conductive member 6 constitutes a contact 60. The contact 60 adopts a bent portion design to ensure a more stable conductive contact. The pressing portion 20 is a key cap, which is mounted on the push rod 2. The key cap and the guide sleeve 1 are clearance-matched, which improves the comfort of the pressing operation.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A key switch structure, characterized in that: include: A guide sleeve (1), the guide sleeve (1) having a through hole (10), the through hole (10) having an axial direction (Z) and a circumferential direction (φ), a plurality of guide grooves (11) being arranged at intervals in the circumferential direction of the hole wall of the guide sleeve (1), the length direction of the guide grooves (11) extending along the axial direction (Z); A push rod (2), the push rod (2) being installed in the through hole (10), the push rod (2) having a first protrusion (21) slidably matched with the guide groove (11), and a pressing portion (20) being provided at one end of the push rod (2) away from the guide sleeve (1); A rotating seat (3), the rotating seat (3) being installed in the through hole (10), the rotating seat (3) having a second protrusion (31) that is slidably matched with the guide groove (11); when the second protrusion (31) is located in the guide groove (11), the push rod (2) and the rotating seat (3) are axially (Z) pushed and matched; when the second protrusion (31) is separated from the guide groove (11), the push rod (2) and the rotating seat (3) are circumferentially (φ) slidably matched; An elastic member (4), the elastic member (4) being arranged on a side of the rotating seat (3) away from the pressing portion (20), and the elastic force direction of the elastic member (4) being opposite to the pushing direction; A base (5), the base (5) is fixedly mounted on the guide sleeve (1), and the base (5) is in blocking cooperation with the elastic member (4); A conductive member (6), the conductive member (6) being installed in the through hole (10), the conductive member (6) having a contact (60) corresponding to the rotating seat (3), the rotating seat (3) being provided with a conductor (30), the conductor (30) and the contact (60) being contactable and electrically conductive.

2. The key switch structure according to claim 1, characterized in that: The conductor (30) is fixedly mounted on a side of the rotating seat (3) facing away from the push rod (2), and the conductor (30) comprises a plurality of metal sheets (300) distributed at circumferential intervals around the rotating seat (3).

3. The key switch structure according to claim 2, characterized in that: The metal sheet (300) and the second protrusion (31) are arranged correspondingly along the axial direction.

4. The key switch structure according to claim 3, characterized in that: The rotating seat (3) has a boss (33) on one side facing away from the push rod (2), and a plurality of metal sheets (300) are respectively clamped and fixed on the circumferential surface of the boss (33).

5. The key switch structure according to claim 1, characterized in that: The hole wall of the guide sleeve (1) is provided with a plurality of slots (12) at intervals in the circumferential direction, the slots (12) are engaged with the second protrusion (31), and the slots (12) and the guide groove (11) are alternately arranged in the circumferential direction so that the second protrusion (31) can rotate circumferentially to switch between the guide groove (11) and the slot (12).

6. The key switch structure according to claim 5, characterized in that: Two conductive members (6) are provided, and the two conductive members (6) are arranged corresponding to the clamping slot (12) along the axial direction (Z).

7. The key switch structure according to claim 1, characterized in that: The push rod (2) is provided with a first tooth portion (22) on a side corresponding to the rotating seat (3), and the rotating seat (3) is provided with a second tooth portion (32) on a corresponding side, and the first tooth portion (22) and the second tooth portion (32) are axially pushed and circumferentially slidably matched.

8. The key switch structure according to claim 7, characterized in that: A guide block (13) is protruding from the hole wall of the guide sleeve (1), and a side of the guide block (13) corresponding to the rotating seat (3) has a plurality of guide inclined surfaces (14), and the plurality of guide inclined surfaces (14) are circumferentially spaced around the hole wall of the guide sleeve (1), and the guide inclined surfaces (14) are slidably matched with the second tooth portion (32).

9. The key switch structure according to claim 1, characterized in that: The conductive member (6) is provided with a bent portion corresponding to the rotating seat (3), and the bent portion of the conductive member (6) constitutes the contact (60).

10. The key switch structure according to claim 1, characterized in that: The pressing portion (20) is a key cap, which is mounted on the push rod (2) and has a clearance fit with the guide sleeve (1).

Images