CN210347023U - Sound cavity air tightness testing device of sound equipment - Google Patents
Sound cavity air tightness testing device of sound equipment Download PDFInfo
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- CN210347023U CN210347023U CN201921362457.1U CN201921362457U CN210347023U CN 210347023 U CN210347023 U CN 210347023U CN 201921362457 U CN201921362457 U CN 201921362457U CN 210347023 U CN210347023 U CN 210347023U
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Abstract
The utility model discloses a sound cavity air tightness testing device of a sound box, which comprises a fixed jig, an air pressure source, a pressure sensor, a top sealing mechanism and a side sealing mechanism, wherein the top sealing mechanism is arranged above the fixed jig, the side sealing mechanism is arranged on one side of the fixed jig, the air pressure source is communicated to the top sealing mechanism or the side sealing mechanism, and the pressure sensor is arranged on the top sealing mechanism or the side sealing mechanism; the top sealing mechanism and the side sealing mechanism both comprise sealing plates, mounting plates and springs, and the sealing plates are elastically connected to the mounting plates through the springs. The utility model is used for the sound chamber gas tightness test of stereo set.
Description
Technical Field
The utility model relates to a stereo set production facility technical field, concretely relates to sound chamber gas tightness testing arrangement of stereo set.
Background
The sound box is a device commonly used in life and work, plays the roles of sound amplification and sound optimization, and is a facility frequently configured in public places such as conference rooms and performance places and in families. The sound box comprises a plurality of components such as a loudspeaker, a sound cavity, a rubber shell and the like, wherein the sound cavity is an important sound production structure of the sound box, and the loudspeaker is fixed in the sound cavity. The sound cavity is a semi-closed structure, and except the sound outlet hole and the air leakage hole, other parts are closed structures. The sound chamber generally all adopts the injection molding of plastic material, and to the great large-scale stereo set of volume, the sound chamber volume is also great, is difficult to directly mould plastics into a holistic sound chamber structure, needs splice into the sound chamber through a plurality of parts of moulding plastics. The sound cavity requires that other parts are closed except the sound outlet hole and the air leakage hole, so that the air tightness of the joint of each part of the sound cavity needs to be detected, and the normal use of the sound cavity is ensured. At present, the hole in the sound cavity is directly blocked by manual work for detecting the air tightness of the sound cavity, whether air leakage occurs or not is detected after the air is inflated, special equipment is not used for detecting the air tightness, and the efficiency and the accuracy of detecting the air tightness of the sound cavity are influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem to not enough in the background art, provide the sound chamber gas tightness testing arrangement of stereo set that can solve.
In order to solve the technical problem, the technical scheme of the utility model is that: a sound cavity air tightness testing device of a sound device comprises a fixed jig, an air pressure source, a pressure sensor, a top sealing mechanism and a side sealing mechanism, wherein the top sealing mechanism is arranged above the fixed jig; the top sealing mechanism and the side sealing mechanism both comprise sealing plates, mounting plates and springs, and the sealing plates are elastically connected to the mounting plates through the springs.
Further, the top sealing mechanism and the side sealing mechanism further comprise a guide post and a linear bearing, the linear bearing is fixed on the mounting plate, the guide post is fixed on the sealing plate, and the guide post is connected to the linear bearing.
Furthermore, the number of the guide posts is more than two, and a spring is sleeved on the periphery of each guide post.
Further, the sealing plate comprises a sealing soft pad attached to one side, close to the fixing jig, of the sealing plate.
The side sealing mechanism is driven to move by the first driving assembly, and the top sealing mechanism is driven to move by the second driving assembly.
Furthermore, the fixed jig comprises a base, a fixed baffle and a movable baffle, the fixed baffle and the movable baffle are both L-shaped structures, the fixed baffle is fixedly arranged on the base, the movable baffle is slidably arranged on the base, and the fixed baffle and the movable baffle are arranged in an opposite angle; the flapper is driven by a first drive assembly.
Furthermore, one side of the inner side of the movable baffle is provided with a sealing cushion, and one side of the movable baffle provided with the sealing cushion is used as a sealing plate of the side part sealing mechanism.
Further, the second driving assembly comprises a sliding rod and a telescopic driving cylinder, the mounting plate is arranged on the sliding rod in a sliding mode, and the telescopic driving cylinder drives the mounting plate to slide on the sliding rod.
The utility model discloses the beneficial effect who realizes mainly has following several: the sealing mechanism and the side sealing mechanism of the air tightness testing device both comprise a sealing plate, a mounting plate and a spring, the sealing plate is elastically connected to the mounting plate through the spring, so that when the sound outlet hole and the air leakage hole are sealed through the top sealing mechanism and the side sealing mechanism, the sealing plate can be contacted and closed with the sound outlet hole and the air leakage hole through the sealing plate, the sealing plate is elastically arranged on the mounting plate through the spring, the sealing plate is more tightly connected with the sound outlet hole or the air leakage hole under the action of elasticity, and the sealing effect is better; simultaneously, through the cushioning effect of spring, avoid between closing plate and the sound chamber too big damage the sound chamber of plastic material to play the effect of protection sound chamber.
Drawings
Fig. 1 is a schematic perspective view of an entire sound cavity air tightness testing device of a sound box according to an embodiment of the present invention;
fig. 2 is a schematic front view structure diagram of the whole top sealing mechanism of the sound cavity air tightness testing device of the sound box in the first embodiment of the present invention connected to the second driving assembly;
fig. 3 is a schematic top view of the connection of the lateral sealing mechanism, the fixing jig and the first driving assembly of the sound chamber air-tightness testing device of the sound box according to the first embodiment of the present invention;
fig. 4 is a schematic structural diagram of a sound cavity of a sound box according to an embodiment of the present invention.
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar parts; the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent.
Detailed Description
To facilitate understanding for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and examples.
Example one
Referring to fig. 1 to 4, a sound cavity airtightness testing device for a sound box is used for testing the airtightness of a spliced seam after splicing a sound cavity, so that the normal use of the sound cavity is ensured. The air tightness testing device comprises a fixing jig 1, an air pressure source 2, a pressure sensor 3, a top sealing mechanism 4 and a side sealing mechanism 5. The fixing jig 1 is used for fixing a sound cavity to be tested; the air pressure source 2 is used for inflating or exhausting air inside the sound cavity; the pressure sensor 3 senses the pressure maintaining performance of the sound cavity, so that whether the air tightness of the sound cavity is good or not is judged; the top sealing mechanism 4 and the side sealing mechanism 5 play a role in sealing the sound outlet hole and the air leakage hole of the sound cavity, and are convenient for testing the air tightness of seams between different parts of the sound cavity. The top sealing mechanism 4 is arranged above the fixed jig 1 and used for sealing a sound outlet hole or a gas leakage hole at the upper part of the sound cavity; the side sealing mechanism 5 is arranged on one side of the fixed jig 1 and used for sealing a sound outlet hole or a leakage hole on the side of the sound cavity.
Referring to fig. 1 to 4, the air pressure source 2 includes an air source (not shown) and a connector 21, the air source is communicated to the connector 21 through an air pipe, the connector 21 is installed on the top sealing mechanism 4 or the side sealing mechanism 5, and the connector 21 can communicate the air source with the internal space of the sound cavity during the air tightness test to inflate or evacuate the sound cavity; the air source can adopt a high-pressure air bottle or a vacuum pump, the high-pressure air bottle can be used for inflating the sound cavity, and the vacuum pump can be used for pumping the sound cavity. The pressure sensor 3 is arranged on the top sealing mechanism 4 or the side sealing mechanism 5, is communicated with the inner space of the sound cavity during the air tightness test, and senses the air pressure inside the sound cavity, so that whether the air tightness of the sound cavity is good or not is judged.
Referring to fig. 1 and 2, each of the top sealing mechanism 4 and the side sealing mechanism 5 includes a sealing plate, a mounting plate and a spring, the sealing plate is elastically connected to the mounting plate through the spring, so that when the sound outlet hole and the air leakage hole are sealed by the top sealing mechanism 4 and the side sealing mechanism 5, the sealing plate can be in contact with and closed with the sound outlet hole and the air leakage hole through the sealing plate, the sealing plate is elastically arranged on the mounting plate through the spring, the sealing plate is more tightly connected with the sound outlet hole or the air leakage hole due to the elastic force, and the sealing effect is better; simultaneously, through the cushioning effect of spring, avoid between closing plate and the sound chamber too big damage the sound chamber of plastic material to play the effect of protection sound chamber.
Referring to fig. 1 and 2, the top sealing mechanism 4 includes a first sealing plate 41, a first mounting plate 42, a first spring 43, a first guiding column 44 and a first linear bearing 45, wherein the first guiding column 44 is fixed on the first sealing plate 41 and is inserted into the first mounting plate 42; the first linear bearing 45 is arranged on the first mounting plate 42, and the first guide column 44 is inserted in the first linear bearing 45; the first spring 43 is disposed around the first guide post 44 and between the first sealing plate 41 and the first mounting plate 42. Therefore, the first sealing plate 41 can elastically move up and down on the first mounting plate 42, and is guided by the first guide post 44 during movement, and meanwhile, the first linear bearing 45 is arranged, so that the first sealing plate 41 can move up and down on the first mounting plate 42 more smoothly and has small resistance; the first spring 43, the first guide post 44 and the first linear bearing 45 may be provided in two or more sets, preferably two or more sets, so that the first sealing plate 41 is more stable and better guided when it is lifted and lowered on the first mounting plate 42.
Referring to fig. 1 and 2, the top sealing mechanism 4 is driven to move by a second driving assembly 7, the second driving assembly 7 is of a vertical frame structure and comprises a vertical plate 73, the vertical plate 73 is vertically fixed on the rear side of the fixed jig 1, the second driving assembly 7 further comprises a sliding rod 71 and a telescopic driving cylinder 72, the sliding rod 71 is vertically arranged, the upper end of the sliding rod is fixed on a mounting block arranged on the top of the vertical plate 73, and the lower end of the sliding rod is fixed on the outer side of the bottom of the fixed jig; the first mounting plate 42 is slidably disposed on the sliding rod 71, a linear bearing may be disposed on the first mounting plate 42, and the sliding rod 71 is inserted into the linear bearing, so that the sliding of the first mounting plate 42 on the sliding rod 71 is smoother; the telescopic driving cylinder 72 is fixed on the mounting block arranged at the top of the vertical plate 73, and the movable end of the telescopic driving cylinder 72 is connected with the first mounting plate 42, so that the telescopic driving cylinder 72 can drive the first mounting plate 42 to slide on the sliding rod 71, the first sealing plate 41 is driven to be close to the fixed jig 1 or to be far away from the fixed jig 1, and sealing of a sound hole or a gas leakage hole at the top of the sound cavity is realized.
Referring to fig. 1 and 3, the side sealing mechanism 5 includes a second sealing plate 51, a second mounting plate 52, a second spring 53, a second guiding post 54 and a second linear bearing 55, wherein the second guiding post 54 is fixed on the second sealing plate 51 and is inserted on the second mounting plate 52; the second linear bearing 55 is arranged on the second mounting plate 52, and the second guide column 54 is inserted in the second linear bearing 55; the second spring 53 is sleeved on the periphery of the second guide post 54 and at a position between the second sealing plate 51 and the second mounting plate 52. Therefore, the second sealing plate 51 can elastically and horizontally stretch and move on the second mounting plate 52, and is guided by the second guide post 54 during movement, and meanwhile, the second linear bearing 55 is arranged, so that the second sealing plate 51 can horizontally stretch and move on the second mounting plate 52 more smoothly and has small resistance; the second spring 53, the second guiding post 54 and the second linear bearing 55 may be provided in two or more sets, preferably two or more sets, so that the second sealing plate 51 is more stable and better guided during horizontal telescopic movement on the second mounting plate 52.
Referring to fig. 1 and 3, the side sealing mechanism 5 is driven to move by the first driving assembly 6, the first driving assembly 6 is horizontally arranged at the outer side of the bottom of the fixed jig 1, the first driving assembly 6 comprises a sliding rail 61 and a horizontal telescopic driving cylinder 62, the sliding rail 61 is fixed at the outer side of the bottom of the fixed jig 1, and the bottom of the second mounting plate 52 is provided with a sliding chute and is arranged on the sliding rail 61 in a sliding manner through the sliding chute; horizontal flexible actuating cylinder 62 is fixed in fixed tool 1 bottom outside through a fixed plate, and the expansion end and the second mounting panel 52 fixed connection of horizontal flexible actuating cylinder 62 that drives to horizontal flexible actuating cylinder 62 can drive the horizontal rectilinear movement of second mounting panel 52, and then the second closing plate 51 of being connected with second mounting panel 52 also horizontal migration, is close to or keeps away from with fixed tool one end, realizes going out the sealed of sound hole or gas leakage hole to sound chamber one side.
The upper end of the fixing jig is fixed on a mounting block arranged at the top of the vertical plate 73, and the lower end of the fixing jig is fixed at the outer side of the bottom of the fixing jig; the first mounting plate 42 is slidably disposed on the sliding rod 71, a linear bearing may be disposed on the first mounting plate 42, and the sliding rod 71 is inserted into the linear bearing, so that the sliding of the first mounting plate 42 on the sliding rod 71 is smoother; the telescopic driving cylinder 72 is fixed on the mounting block arranged at the top of the vertical plate 73, and the movable end of the telescopic driving cylinder 72 is connected with the first mounting plate 42, so that the telescopic driving cylinder 72 can drive the first mounting plate 42 to slide on the sliding rod 71, and the first sealing plate 41 is driven to be close to the fixed jig 1 or to be far away from the fixed jig 1.
The first sealing plate 41 and the second sealing plate 51 both comprise a sealing cushion (not shown in the figure), the sealing cushion is attached to one side, close to the fixed jig 1, of the sealing plate, and when the first sealing plate 41 and the second sealing plate 51 seal the sound cavity, the sealing cushion is in direct contact with the sound cavity, so that when the first sealing plate 41 and the second sealing plate 51 seal the sound hole and the air leakage hole, the sealing is more reliable. The sealing soft cushion can adopt an elastic soft silica gel cushion.
Referring to fig. 1 and 3, the fixing jig 1 includes a base 11, a fixed baffle 12 and a movable baffle 13, where the base 11 may be larger, and the first driving assembly 6 and the second driving assembly 7 are convenient to mount. The fixed baffle 12 and the movable baffle 13 are both L-shaped structures, the fixed baffle 12 is fixedly arranged on the base 11, the movable baffle 13 is arranged on the base 11 in a sliding manner, the movable baffle 13 is driven by the first driving assembly 6, and the movable baffle 13 is connected to the second mounting plate by the second guide post and the second spring; the fixed baffle 12 is arranged diagonally to the moveable baffle 13, so that a cuboidal sound cavity can be fixed by two diagonal positions. The movable baffle 13 and the second sealing plate 51 can be arranged separately, preferably together, thereby simplifying the production and assembly of the device; in the embodiment, the movable baffle 13 and the second sealing plate 51 are arranged together, one side of the inner side of the movable baffle 13 with the L-shaped structure is provided with a sealing cushion, and one side of the movable baffle 13 provided with the sealing cushion is used as the second sealing plate 51 of the side sealing mechanism 5; therefore, the movable baffle 13 can play a role in fixing the sound cavity and also play a role in sealing the sound outlet hole or the air leakage hole.
Referring to fig. 1 to 4, the working process of the air tightness testing device of the present embodiment is as follows: after the ultrasonic welding of the part a and the part b in fig. 4 is completed, the sound cavity is pushed onto the fixed baffle 12 from the front side of the base 11; starting the air tightness testing device, driving the movable baffle 13 to move towards the fixed baffle 12 by the first driving assembly 6, fixing the sound cavity on the base by matching with the fixed baffle 12, and sealing the air leakage hole d of the sound cavity by the inner side of the movable baffle 13; meanwhile, the second driving component 7 drives the first sealing plate to press down, and the sound outlet hole c of the sound cavity is sealed; then the air pressure source 2 is used for inflating (or exhausting) the sound cavity to a set air pressure, the air pressure in the sound cavity is detected through the pressure sensor 3 after a certain time (such as 10 s), if the air pressure is consistent with the initial air pressure, the air tightness of the joint between the part a and the part b of the sound cavity is good, otherwise, the air leakage of the joint between the part a and the part b is indicated, and the sound cavity is defective.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. The utility model provides a sound chamber gas tightness testing arrangement of stereo set which characterized in that: the device comprises a fixed jig (1), an air pressure source (2), a pressure sensor (3), a top sealing mechanism (4) and a side sealing mechanism (5), wherein the top sealing mechanism (4) is arranged above the fixed jig (1), the side sealing mechanism (5) is arranged on one side of the fixed jig (1), the air pressure source (2) is communicated to the top sealing mechanism (4) or the side sealing mechanism (5), and the pressure sensor (3) is arranged on the top sealing mechanism (4) or the side sealing mechanism (5); the top sealing mechanism (4) and the side sealing mechanism (5) comprise sealing plates, mounting plates and springs, and the sealing plates are elastically connected to the mounting plates through the springs.
2. The sound chamber airtightness testing apparatus for a sound box according to claim 1, wherein: the top sealing mechanism (4) and the side sealing mechanism (5) further comprise guide columns and linear bearings, the linear bearings are fixed on the mounting plate, the guide columns are fixed on the sealing plate, and the guide columns are connected to the linear bearings.
3. The sound chamber airtightness testing apparatus for a sound box according to claim 2, wherein: the guide posts are more than two, and a spring is sleeved on the periphery of each guide post.
4. The sound chamber airtightness testing apparatus for a sound box according to claim 3, wherein: the sealing plate comprises a sealing soft pad which is attached to one side, close to the fixing jig (1), of the sealing plate.
5. The sound chamber airtightness testing apparatus for a sound box according to any one of claims 1 to 4, wherein: the sealing device is characterized by further comprising a first driving assembly (6) and a second driving assembly (7), the side sealing mechanism (5) is driven to move through the first driving assembly (6), and the top sealing mechanism (4) is driven to move through the second driving assembly (7).
6. The sound chamber airtightness testing apparatus for a sound box according to claim 5, wherein: the fixed jig (1) comprises a base (11), a fixed baffle (12) and a movable baffle (13), wherein the fixed baffle (12) and the movable baffle (13) are both L-shaped structures, the fixed baffle (12) is fixedly arranged on the base (11), the movable baffle (13) is arranged on the base (11) in a sliding manner, and the fixed baffle (12) and the movable baffle (13) are arranged diagonally; the movable baffle (13) is driven by a first driving component (6).
7. The sound chamber airtightness testing apparatus for a sound box according to claim 6, wherein: one side of the inner side of the movable baffle (13) is provided with a sealing soft pad, and one side of the movable baffle (13) provided with the sealing soft pad is used as a sealing plate of the side part sealing mechanism (5).
8. The sound chamber airtightness testing apparatus for a sound box according to claim 5, wherein: the second driving assembly (7) comprises a sliding rod (71) and a telescopic driving air cylinder (72), the mounting plate (42) is arranged on the sliding rod (71) in a sliding mode, and the telescopic driving air cylinder (72) drives the mounting plate (42) to slide on the sliding rod (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921362457.1U CN210347023U (en) | 2019-08-21 | 2019-08-21 | Sound cavity air tightness testing device of sound equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921362457.1U CN210347023U (en) | 2019-08-21 | 2019-08-21 | Sound cavity air tightness testing device of sound equipment |
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| CN210347023U true CN210347023U (en) | 2020-04-17 |
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| CN201921362457.1U Active CN210347023U (en) | 2019-08-21 | 2019-08-21 | Sound cavity air tightness testing device of sound equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113401712A (en) * | 2021-06-30 | 2021-09-17 | 苏州富强科技有限公司 | Pressing type sealing device |
| CN113405744A (en) * | 2021-06-16 | 2021-09-17 | 重庆科技学院 | Automatic detection system for air tightness of box |
| CN113459517A (en) * | 2021-06-30 | 2021-10-01 | 苏州富强科技有限公司 | Sealing film attaching method |
-
2019
- 2019-08-21 CN CN201921362457.1U patent/CN210347023U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405744A (en) * | 2021-06-16 | 2021-09-17 | 重庆科技学院 | Automatic detection system for air tightness of box |
| CN113405744B (en) * | 2021-06-16 | 2023-01-10 | 重庆科技学院 | Automatic detection system for air tightness of box |
| CN113401712A (en) * | 2021-06-30 | 2021-09-17 | 苏州富强科技有限公司 | Pressing type sealing device |
| CN113459517A (en) * | 2021-06-30 | 2021-10-01 | 苏州富强科技有限公司 | Sealing film attaching method |
| CN113401712B (en) * | 2021-06-30 | 2023-03-14 | 苏州富强科技有限公司 | Pressing-down type sealing device |
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