Knob type horn cover convenient to replace

Abstract

The utility model relates to the technical field of earphones, in particular to a knob type horn cover convenient to replace, which comprises an earmuff, and an earmuff is fixed on the front end face of the earmuff. Two symmetrical clamping holes are formed in the inner wall of an opening in the front end face of each earmuff. A gear ring is fixed to the outer wall of the rotary knob, racks are installed at the positions, located on the two sides of the gear ring, in the cover body, through holes are formed in one ends of the racks, connecting plates are fixed to the other ends of the racks, and clamping heads are installed on the two end faces, deviating from each other, of the two connecting plates; the spring exerts elastic acting force on the rack, the rack drives the connecting plate to abut against the inner wall of the cover body, and the clamping head is stably connected with the clamping hole in a clamped mode. When the horn cover is replaced, the rotary knob is rotated to enable the gear ring to rotate, the racks on the two sides can move relatively, the clamping heads can be separated from the clamping holes, and then limitation on the cover body can be removed conveniently so that the cover body can be detached. According to the design, the horn cover is convenient to disassemble and assemble, and the replacement convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of earphones, in particular to a knob-type speaker cover which is easy to replace. Background Art

[0002] Headphones are headphones that are worn on the head instead of inserted into the ear canal, which is different from in-ear earplugs. Its main components include headband (head beam), ear shell (earmuffs), driver, wire and ear pads. The speaker cover is one of the components of the driver housing. It is a protective or decorative part on the outside of the driver housing to prevent dust, dirt or other objects from entering the interior of the speaker, thereby protecting it from damage.

[0003] During the use of headphones, the speaker cover is easily broken or damaged due to external forces such as bumps, which will cause the components inside the driver to be exposed. Therefore, it is necessary to replace the speaker cover in time; however, when installing the existing speaker cover, the speaker cover and the driver housing are mostly fixed by bolts. Although this installation method is secure, when replacing a broken speaker cover, multiple bolts have to be removed in sequence, which makes the replacement operation of the speaker cover inconvenient. In view of this, we propose a knob-type speaker cover that is easy to replace. Utility Model Content

[0004] In order to solve the above-mentioned problem, the utility model provides a knob-type speaker cover which is easy to replace.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] The knob-type speaker cover which is easy to replace comprises an earmuff, the front end surface of the earmuff is fixed with an earmuff, the front end surface of the earmuff is in an open shape, and the inner wall of the opening of the front end surface of the earmuff is provided with two symmetrical clamping holes;

[0007] A detachable speaker cover is installed at the opening of the front end surface of the earmuff; the speaker cover includes a hollow cover body, a knob is rotatably installed at the center of the cover body, the knob passes through the cover body, a gear ring is fixed to the outer wall of the knob, racks are installed on both sides of the gear ring inside the cover body, through holes are opened at one end of the racks, connecting plates are fixed at the other end of the racks, and clamps are installed on the two opposite end surfaces of the two connecting plates, the clamps pass through the cover body and are engaged with the corresponding clamping holes; horizontal plates are also fixed at the upper and lower sides of the cover body, guide rods are installed on the two opposite end surfaces of the two horizontal plates, the guide rods are slidably connected to the corresponding through holes, and springs for tightening the racks are sleeved on the guide rods.

[0008] Furthermore, a groove is formed on the front end surface of the knob, and a cross bar is fixed in the groove.

[0009] Furthermore, the overall shape of the connecting plate is arc-shaped, and the connecting plate is fixedly connected to the rack by bolts.

[0010] Furthermore, the two racks are centrally symmetrical, and the racks are made of galvanized steel.

[0011] Furthermore, the size of the inner cavity of the cover body is adapted to the size of the rack, and the front and rear outer walls of the rack are respectively fitted with the inner cavity of the cover body.

[0012] Furthermore, a limiting ring is fixed in the opening of the front end surface of the earmuff, and the rear end surface of the cover body is pressed against the limiting ring.

[0013] Furthermore, the inner wall of the opening of the front end surface of the earmuff is provided with two positioning grooves, and the outer wall of the cover body is fixed with two positioning blocks, and the positioning blocks are plugged and matched with the positioning grooves.

[0014] Furthermore, a decorative sheet is installed on the front end surface of the speaker cover, and the speaker cover is tightly bonded to the decorative sheet.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] By setting up the speaker cover: under the elastic action of the spring, an elastic force is applied to the rack, the rack drives the connecting plate to press against the inner wall of the cover body, and the clamping head is stably clamped with the clamping hole; when replacing the speaker cover, the knob is turned to rotate the gear ring, so that the racks on both sides can move relative to each other, and the clamping head can be separated from the clamping hole, thereby facilitating the removal of the restriction on the cover body to disassemble the cover body; this design facilitates the disassembly and assembly of the speaker cover and improves the convenience of replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall explosion structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the earmuff in the utility model;

[0020] Figure 4 This is a schematic cross-sectional view of the structure of the speaker cover in the utility model;

[0021] Figure 5 It is a partial structural schematic diagram of the speaker cover in the utility model.

[0022] In the figure:

[0023] 1. Earmuffs;

[0024] 2. earmuffs; 20. positioning slots; 21. clamping holes; 22. limiting rings;

[0025] 3. Speaker cover; 30. Cover body; 301. Positioning block; 31. Knob; 311. Groove; 312. Cross bar; 32. Gear ring; 33. Rack; 331. Through hole; 34. Connecting plate; 35. Clamp; 36. Cross plate; 37. Guide rod; 38. Spring; 39. Decorative sheet. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] This embodiment provides a technical solution:

[0028] See also Figure 1-Figure 5 As shown, a knob-type speaker cover that is easy to replace includes an earmuff 1, an earmuff 2 is fixed to the front end surface of the earmuff 1, the front end surface of the earmuff 2 is open, and two symmetrical clamping holes 21 are provided on the inner wall of the opening of the front end surface of the earmuff 2; a detachable speaker cover 3 is installed at the opening of the front end surface of the earmuff 2; the speaker cover 3 includes a hollow cover body 30, a knob 31 is rotatably installed at the center of the cover body 30, the knob 31 penetrates the cover body 30, a toothed ring 32 is fixed to the outer wall of the knob 31, and racks 33 are installed on both sides of the toothed ring 32 inside the cover body 30 A through hole 331 is provided at one end of the rack 33, and a connecting plate 34 is fixed at the other end of the rack 33. The two end surfaces of the two connecting plates 34 that are away from each other are installed with a clamping head 35, which passes through the cover body 30 and is engaged with the corresponding clamping hole 21; a horizontal plate 36 is also fixed at the upper and lower sides of the cover body 30, and the two opposite end surfaces of the two horizontal plates 36 are installed with a guide rod 37, which is slidably connected with the corresponding through hole 331, and a spring 38 for pressing against the rack 33 is sleeved on the guide rod 37.

[0029] In this embodiment, a groove 311 is formed on the front end surface of the knob 31, and a cross bar 312 is fixed in the groove 311. This design facilitates the rotation of the knob 31 through the cross bar 312, thereby improving the convenience of operation.

[0030] In this embodiment, the overall shape of the connecting plate 34 is arc-shaped, and the connecting plate 34 is fixedly connected to the rack 33 by bolts. The bolt fixing method ensures the reliability of the connection between the connecting plate 34 and the rack 33, and the arc-shaped design facilitates the connection between the connecting plate 34 and the inner wall of the cover 30.

[0031] In this embodiment, the two racks 33 are centrally symmetrical, and the racks 33 are made of galvanized steel. The galvanized steel racks 33 have the advantage of corrosion resistance, which ensures the service life of the racks 33.

[0032] In this embodiment, the inner cavity size of the cover 30 is adapted to the size of the rack 33, and the front and rear outer walls of the rack 33 are respectively fitted with the inner cavity of the cover 30. This design facilitates the smooth lifting and lowering of the rack 33 in the inner cavity of the cover 30, ensuring the smooth and stable operation of the rack 33.

[0033] In this embodiment, a limiting ring 22 is fixed in the front opening of the earmuff 2, and the rear end of the cover 30 is pressed against the limiting ring 22. The setting of the limiting ring 22 limits the earmuff 2 and ensures the installation reliability of the cover 30.

[0034] In this embodiment, two positioning grooves 20 are further provided on the inner wall of the front opening of the earmuff 2, and two positioning blocks 301 are fixed on the outer wall of the cover body 30, and the positioning blocks 301 are plugged into and matched with the positioning grooves 20. The arrangement of the positioning blocks 301 and the positioning grooves 20 increases the convenience of installing the cover body 30 into the front opening of the earmuff 2.

[0035] In this embodiment, a decorative sheet 39 is installed on the front end surface of the speaker cover 3, and the speaker cover 3 is tightly bonded to the decorative sheet 39. The decorative sheet 39 plays a decorative role and improves the aesthetics of the speaker cover 3.

[0036] It should be added that the decorative sheet 39 in this embodiment mainly plays a decorative role, and the decorative sheet 39 can have a variety of colors or patterns to improve the aesthetics of the speaker cover 3.

[0037] During specific use, the user first pinches the cross bar 312 and rotates it. The cross bar 312 drives the knob 31 to rotate, and the knob 31 drives the gear ring 32 to rotate. Because the gear ring 32 is meshed with the rack 33, the racks 33 on both sides move relative to each other synchronously, and the spring 38 is compressed by the rack 33. The rack 33 simultaneously drives the upper and lower connecting plates 34 to move relative to each other synchronously. The connecting plates 34 simultaneously drive the clamping head 35 to move, and the clamping head 35 disengages from the clamping hole 21. Then the user pulls the cover body 30 outward, the cover body 30 disengages from the earmuff 2, and the cover body 30 is removed.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A knob-type speaker cover that is easy to replace, comprising an earmuff (1), characterized in that: An earmuff (2) is fixed to the front end surface of the earmuff (1); the front end surface of the earmuff (2) is in an open shape; and two symmetrical clamping holes (21) are provided on the inner wall of the opening of the front end surface of the earmuff (2); A detachable speaker cover (3) is installed at the opening of the front end surface of the earmuff (2); the speaker cover (3) comprises a hollow cover body (30), a knob (31) is rotatably installed at the center of the cover body (30), the knob (31) passes through the cover body (30), a toothed ring (32) is fixed to the outer wall of the knob (31), racks (33) are installed at both sides of the toothed ring (32) inside the cover body (30), a through hole (331) is opened at one end of the rack (33), and a connecting plate is fixed at the other end of the rack (33). (34), two end surfaces of the two connecting plates (34) that are separated from each other are both equipped with clamping heads (35), the clamping heads (35) pass through the cover body (30) and are clamped and matched with the corresponding clamping holes (21); a transverse plate (36) is also fixed at the upper and lower sides of the cover body (30), and two end surfaces of the two transverse plates (36) that are opposite to each other are both equipped with guide rods (37), the guide rods (37) are slidably connected with the corresponding through holes (331), and the guide rods (37) are sleeved with springs (38) for pressing against the rack (33).

2. The easily replaceable knob-type speaker cover according to claim 1, characterized in that: The front end surface of the knob (31) is provided with a groove (311), and a crossbar (312) is fixed in the groove (311).

3. The easily replaceable knob-type speaker cover according to claim 1, characterized in that: The overall shape of the connecting plate (34) is arc-shaped, and the connecting plate (34) is fixedly connected to the rack (33) by bolts.

4. The easily replaceable knob-type speaker cover according to claim 1, characterized in that: The two racks (33) are centrally symmetrical, and the racks (33) are made of galvanized steel.

5. The easily replaceable knob-type speaker cover according to claim 1, characterized in that: The size of the inner cavity of the cover body (30) is matched with the size of the rack (33), and the front and rear outer walls of the rack (33) are respectively fitted with the inner cavity of the cover body (30).

6. The easily replaceable knob-type speaker cover according to claim 1, characterized in that: A limiting ring (22) is also fixed in the opening of the front end face of the earmuff (2), and the rear end face of the cover body (30) is pressed against the limiting ring (22).

7. The easily replaceable knob-type speaker cover according to claim 1, characterized in that: The inner wall of the front end opening of the earmuff (2) is also provided with two positioning grooves (20), and the outer wall of the cover body (30) is fixed with two positioning blocks (301), and the positioning blocks (301) are plugged into and matched with the positioning grooves (20).

8. The easily replaceable knob-type speaker cover according to claim 1, characterized in that: A decorative sheet (39) is installed on the front end surface of the speaker cover (3), and the speaker cover (3) and the decorative sheet (39) are tightly bonded.

Images