Silent shaft

Abstract

The mute shaft comprises an upper cover, a pressing handle and a base, the upper cover is arranged on the base in a covering mode, the upper cover and the base form a containing space, the pressing handle comprises a pressing handle body, a limiting rod, a first buffering structure and a second buffering structure which are integrally connected, and the first buffering structure and the second buffering structure are symmetrically distributed on the two sides of the pressing handle body. The limiting rod is located below the pressing handle body, the first buffering structure, the second buffering structure and the limiting rod are all located in the containing space, the limiting rod is inserted into the base, and the pressing handle moves up and down along the upper cover. According to the utility model, the first buffer structure and the second buffer structure which are unique in structure are arranged, the mute coil and the buffer clamping piece are used for buffering the vertical moving force of the pressing handle, sound generated by collision between the pressing handle and the upper cover and the base is eliminated, the first buffer structure and the second buffer structure are prevented from being staggered in the vertical moving process of the pressing handle, and the service life of the pressing handle is prolonged. The use stability of the mute shaft is improved, and the mute effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of silent keyboards, in particular to a silent shaft. Background Art

[0002] In existing keyboard switches, when the button is pressed to the bottom position or returns to the top position, a sound will be made due to the collision between the button and the base or the button and the upper cover, which affects the user experience. Application number: 202123190072.1, named a utility model patent for a silent shaft structure with a tactile feel, discloses a silent shaft structure with a tactile feel, including a key base installed on a PCB board, a switch shaft and an elastic reset member for resetting the switch shaft provided in the key base, a tactile elastic member installed in the key base, a tactile protrusion for triggering the tactile feel provided on the side wall of the switch shaft, and a silent pad installed at the bottom of the switch shaft. However, in this technical solution, the silent pad takes up a large space, and the assembly with the switch shaft is not stable enough. During use, it is easy for the silent pad to become loose or misplaced, thereby affecting the silent effect of the key. Utility Model Content

[0003] The purpose of the utility model is to provide a silent shaft.

[0004] According to one aspect of the utility model, a silent shaft is provided, including an upper cover, a handle and a base. The upper cover is arranged on the base and forms a accommodating space with the base. The handle includes an integrally connected handle body, a limiting rod, a first buffer structure and a second buffer structure. The first buffer structure and the second buffer structure are symmetrically distributed on both sides of the handle body. The limiting rod is located below the handle body. The first buffer structure, the second buffer structure and the limiting rod are all located in the accommodating space. The limiting rod is inserted into the base, and the handle moves up and down along the upper cover.

[0005] In some embodiments, the first buffer structure and the second buffer structure have the same structure, and the first buffer structure includes a buffer clamp and a silent ring, and the silent ring is sleeved on the buffer clamp.

[0006] In some embodiments, the buffer clip is provided with a clamping portion and a connecting portion that are integrally connected, one end of the connecting portion is fixedly connected to the handle body, and the clamping portion is provided with an upper clamping block and a lower clamping block, the top of the upper clamping block is higher than the top of the connecting portion, and the bottom of the lower clamping block is lower than the bottom of the connecting portion.

[0007] In some embodiments, the silent ring is arranged on the connecting part, the width of the silent ring is the same as the distance between the upper clamping block and the handle body, one side of the silent ring is against the handle body, and the other side is against the upper clamping block and the lower clamping block.

[0008] In some embodiments, the first buffer structure further includes a left bump and a right bump, and the left bump and the right bump are symmetrically distributed on both sides of the buffer clamp.

[0009] In some embodiments, the distance between the left protrusion and the buffer clamp is the same as the distance between the right protrusion and the buffer clamp, and is the same as the thickness of the silent ring.

[0010] In some embodiments, the silent ring is sleeved on the buffer clamp, and the left and right sides of the silent ring are respectively in contact with the left protrusion and the right protrusion.

[0011] In some embodiments, the present invention also includes a spring, and the base is provided with a receiving groove, a fixed column and a hollow hole. The hollow hole is located in the fixed column, and its position corresponds to the position of the limiting rod. The limiting rod is inserted into the hollow hole, and the receiving groove surrounds the outside of the fixed column. The spring is sleeved on the outside of the fixed column, its bottom end is located in the receiving groove, and its top end is in contact with the handle body.

[0012] In some embodiments, the upper cover is provided with two card slots, which are symmetrical on the left and right, and their positions correspond one-to-one to the first buffer structure and the second buffer structure. The first buffer structure and the second buffer structure are correspondingly mounted in the two card slots, and the tops of the two card slots are provided with sealing covers.

[0013] The beneficial effects of the present invention are as follows: the present invention arranges a first buffer structure and a second buffer structure with unique structures, utilizes the special structures of the silent ring, the buffer clip, the left protrusion and the right protrusion to buffer the force of the handle moving up and down, eliminates the sound generated by the collision of the handle with the upper cover and the base, avoids the first buffer structure and the second buffer structure from being misaligned during the up and down movement of the handle, improves the use stability of the silent shaft, and further improves the silent effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an exploded view of a silent shaft of the utility model.

[0015] Figure 2 The utility model is a structural schematic diagram of a push handle of a silent shaft.

[0016] Figure 3 The utility model is a top view of a handle of a silent shaft.

[0017] Figure 4 This is a structural schematic diagram of a first buffer structure of a silent shaft of the present utility model.

[0018] Figure 5 This is a bottom view of the upper cover of a silent shaft according to the present invention.

[0019] Figure 6 This is a structural schematic diagram of a base of a silent shaft of the present utility model. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the embodiments.

[0021] refer to Figures 1 to 6 The utility model provides a silent shaft, comprising an upper cover 1, a handle 2, a base 3 and a spring 4. The upper cover 1 is arranged on the base 3 and forms a receiving space with the base 3.

[0022] The push handle 2 includes an integrally connected push handle body 21, a limiting rod 22, a first buffer structure 23 and a second buffer structure 24. The limiting rod 22 is located below the push handle body 21. The first buffer structure 23, the second buffer structure 24 and the limiting rod 22 are all located in the accommodating space. The first buffer structure 23 and the second buffer structure 24 are symmetrically distributed on both sides of the push handle body 21. The first buffer structure 23 and the second buffer structure 24 have the same structure. The first buffer structure 23 includes a buffer clamp 231, a silent ring 232, a left protrusion 233 and a right protrusion 234. The buffer clamp 231 is provided with an integrally connected clamping portion 235 and a connecting portion 236. One end of the connecting portion 236 is fixedly connected to the push handle body 21. The clamping portion 235 is provided with an upper clamping block 237 and a lower clamping block 238. The top of the upper clamping block 237 is higher than the top of the connecting portion 236, and the bottom of the lower clamping block 238 is lower than the bottom of the connecting portion 236. The left protrusion 233 and the right protrusion 234 are symmetrically distributed on both sides of the buffer clamp 231. The width of the silent ring 232 is the same as the distance between the upper clamp 237 and the handle body 21. The distance between the left protrusion 233 and the buffer clamp 231 is the same as the distance between the right protrusion 234 and the buffer clamp 231, and is the same as the thickness of the silent ring 232. The silent ring 232 is sleeved on the connecting portion 236, with its rear end abutting against the handle body 21, its front end abutting against the upper clamp 237 and the lower clamp 238, and its left and right sides abutting against the left protrusion 233 and the right protrusion 234 respectively. The left protrusion 233 and the right protrusion 234 play the role of clamping and fixing the silent ring 232. The top of the silent ring 232 is higher than the top of the upper block 237, the left protrusion 233, and the right protrusion 234, and its bottom is lower than the bottom of the lower block 238, the left protrusion 233, and the right protrusion 234. The silent ring 232 is elastic and can be a rubber ring or a silicone ring.

[0023] The base 3 is provided with a receiving slot 31, a fixing post 32, and a hollow hole 33. The hollow hole 33 is located within the fixing post 32, and its position corresponds to the position of the limiting rod 22. The limiting rod 22 is inserted into the hollow hole 33. The receiving slot 31 surrounds the outside of the fixing post 32. The spring 4 is sleeved around the outside of the fixing post 32, with its bottom end located within the receiving slot 31 and its top end abutting against the handle body 21.

[0024] The upper cover 1 is provided with two symmetrical slots 11, and their positions correspond one-to-one with the first buffer structure 23 and the second buffer structure 24. The first buffer structure 23 and the second buffer structure 24 are correspondingly mounted in the two slots 11, and the tops of the two slots 11 are provided with covers.

[0025] When this embodiment is in use, the handle 2 moves downward, the silent ring 232 moves downward along the slot 11 with the handle 2, and the bottom of the silent ring 232 touches the bottom of the base 1, preventing the upper block 237 from hitting the bottom of the base 1, thereby achieving a silent effect; the spring 4 rebounds and drives the handle 2 to move upward, and the silent ring 232 moves upward along the slot 11 with the handle 2, and the top of the silent ring 232 touches the cover of the upper cover 1, thereby preventing the lower block 238 from hitting the upper cover 1, thereby achieving a silent effect.

[0026] The above are only some embodiments of the present invention. For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A silent shaft, characterized in that: It includes an upper cover, a handle and a base. The upper cover is arranged on the base and forms a storage space with the base. The handle includes an integrally connected handle body, a limiting rod, a first buffer structure and a second buffer structure. The first buffer structure and the second buffer structure are symmetrically distributed on both sides of the handle body. The limiting rod is located below the handle body. The first buffer structure, the second buffer structure and the limiting rod are all located in the storage space. The limiting rod is inserted into the base, and the handle moves up and down along the upper cover.

2. A silent shaft according to claim 1, characterized in that: The first buffer structure has the same structure as the second buffer structure. The first buffer structure includes a buffer clamp and a silent ring. The silent ring is sleeved on the buffer clamp.

3. The silent shaft according to claim 2, characterized in that: The buffer clamp is provided with a clamping portion and a connecting portion that are integrally connected, one end of the connecting portion is fixedly connected to the handle body, the clamping portion is provided with an upper clamping block and a lower clamping block, the top of the upper clamping block is higher than the top of the connecting portion, and the bottom of the lower clamping block is lower than the bottom of the connecting portion.

4. The silent shaft according to claim 3, characterized in that: The silent ring is sleeved on the connecting portion, the width of the silent ring is the same as the distance between the upper clamping block and the handle body, one side of the silent ring is against the handle body, and the other side is against the upper clamping block and the lower clamping block.

5. The silent shaft according to claim 2, characterized in that: The first buffer structure further includes a left bump and a right bump, and the left bump and the right bump are symmetrically distributed on both sides of the buffer clamp.

6. The silent shaft according to claim 5, characterized in that: The distance between the left protrusion and the buffer clamp is the same as the distance between the right protrusion and the buffer clamp, and is the same as the thickness of the silent ring.

7. The silent shaft according to claim 6, characterized in that: The silent ring is sleeved on the buffer clamp, and the left and right sides of the silent ring are respectively in contact with the left convex block and the right convex block.

8. The silent shaft according to claim 1, characterized in that: It also includes a spring. The base is provided with a receiving groove, a fixing column and a hollow hole. The hollow hole is located in the fixing column, and its position corresponds to the position of the limiting rod. The limiting rod is inserted into the hollow hole. The receiving groove surrounds the outside of the fixing column. The spring is sleeved on the outside of the fixing column, its bottom end is located in the receiving groove, and its top end abuts against the handle body.

9. The silent shaft according to claim 1, characterized in that: The upper cover is provided with two card slots, which are symmetrical on the left and right. Their positions correspond one-to-one to the first buffer structure and the second buffer structure. The first buffer structure and the second buffer structure are correspondingly mounted in the two card slots, and the top ends of the two card slots are provided with sealing covers.

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