Lifting type wooden door sound insulation strip

Abstract

The utility model relates to a lifting type wooden door sound insulation strip which comprises a door body, a mounting groove is formed in the lower end of the door body and used for containing an outer shell, a sound insulation strip is arranged at the lower end of the outer shell through a mounting plate, and a plurality of driving pieces are arranged in the outer shell side by side from front to back. The upper end of each driving piece is fixedly connected with a front-back axial driving shaft rotationally connected with the outer shell, the lower end of each driving piece is provided with a sliding groove, the distances between the two ends of each sliding groove and the central axis of the corresponding driving shaft are different, a follow-up rod is inserted into each sliding groove, and the lower end of each follow-up rod is fixedly connected with the mounting plate through a connecting piece. According to the device, the gap between the lower end of the door body and the ground is blocked through the sound insulation strip, and therefore the sound insulation effect is achieved; the follow-up rod can fully reduce the thrust in the horizontal direction in the moving process of the follow-up rod in an arc-shaped and long-track movement mode in the sliding groove, so that the abrasion is reduced, and the overall service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sound insulation strips, in particular to a lifting type sound insulation strip for wooden doors. Background Art

[0002] With the development of the atomized society, modern people pay more and more attention to their privacy. When they are alone indoors, they desire to obtain independent space without being disturbed by the outside world. However, in order to ensure the smooth opening and closing and avoid travel conflicts, the existing indoor wooden door structure must have a certain gap with the ground. The existence of the gap will inevitably lead to a decrease in the sound insulation performance of the existing indoor wooden door.

[0003] Therefore, it is currently necessary to add sound insulation strips under the indoor wooden doors to block the gap under the indoor wooden doors. Among them, there is a lifting sound insulation strip that is embedded inside the door body and blocks the gap under the wooden door only when the wooden door is closed. This can perfectly avoid travel conflicts and achieve sound insulation effects.

[0004] Existing lifting sound insulation strips generally include a mounting strip with an elastic pad fixedly connected to the lower end, a plurality of driven blocks with a semicircular structure fixedly connected to the upper end of the mounting strip, a sliding rod is arranged above the mounting platform, and a driving block is arranged on the lower end surface of the sliding rod for the driven block. By sliding the sliding rod, the contact position of the driving block and the driven block is changed, thereby realizing the up and down movement of the mounting strip and the elastic pad. When the elastic pad contacts the ground, a sound insulation effect is formed.

[0005] However, in actual use, since the slide bar is squeezed and slides by the door frame during the door closing process, its movement stroke is inevitably short. This means that when it drives the driving block to use the driven block to change the up and down position of the mounting bar, the reaction force it is subjected to is inevitably large, that is, the user needs to exert a greater thrust to close the door. Moreover, the sliding connection between the driving block and the driven block will inevitably produce greater friction losses during long-term use, which makes the overall device unable to have a long service life.

[0006] Therefore, we believe that a lifting type wooden door sound insulation strip which saves effort and reduces friction loss is needed. Utility Model Content

[0007] In view of the shortcomings of the prior art, the utility model proposes a lifting type wooden door sound insulation strip, which has the advantages of saving effort, reducing friction loss and extending service life, and solves the shortcomings of the prior art device that the friction loss is large, the user has more effort to close the door and the service life is short.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A lifting type wooden door sound insulation strip comprises a door body, a mounting groove is provided at the lower end of the door body, and an outer shell is embedded in the mounting groove;

[0010] A plurality of driving members are arranged in parallel from left to right in the outer shell, and a driving shaft in a front-to-rear axial direction is fixedly connected to the upper end of each driving member, and the driving shaft is rotatably connected to the outer shell;

[0011] A slide groove is provided at the lower end of each driving member, and the distances between the two ends of the slide groove and the central axis of the corresponding driving shaft are unequal, and the inner wall of the slide groove has a smooth transition;

[0012] A follower rod is inserted into each of the slide grooves, and a U-shaped connecting piece is fixedly connected to the lower end of the follower rod, and a mounting plate is fixedly connected to the lower ends of the multiple connecting pieces, and a sound insulation strip made of elastic material is fixedly connected to the lower end of the mounting plate;

[0013] A plurality of limit plates are arranged in parallel from left to right in the outer shell, each limit rod is penetrated with a limit hole in the upper and lower axial directions, and a limit rod is inserted into each limit hole, and the lower end of the limit rod is fixedly connected to the mounting plate;

[0014] The two axial ends of each driving shaft are coaxially fixedly connected with a driven gear, and the upper ends of the two driving gears corresponding to the single driving shaft are jointly connected with a rack;

[0015] A plurality of slide rails are arranged in parallel from left to right in the outer shell, a slide rod is commonly inserted into the interior of the plurality of slide rails, and the upper ends of the plurality of racks are commonly fixedly connected to the slide rod.

[0016] Preferably, a fixing piece with an inverted U-shaped longitudinal section is fixedly connected to the upper end of each rack, and a tension spring is fixedly connected to the left end surface of the fixing piece, and the tension spring is sleeved on the outside of the slide rod;

[0017] Each of the fixing members is correspondingly provided with a slide rail, and the other axial end of each tension spring is fixedly connected to the corresponding slide rail.

[0018] Preferably, when the tension spring is not affected by external force, the left side of the slide rod protrudes out of the mounting groove, and the follower rod is located at one end of the slide groove close to the central axis of the drive shaft.

[0019] Preferably, when the tension spring is not affected by external force, the height of the lower end surface of the sound insulation strip is greater than the height of the lower end surface of the door panel.

[0020] Preferably, when the tension spring is immersed in the installation groove, the height of the lower end surface of the sound insulation strip is less than the height of the lower end surface of the door panel, and the follower rod is located at the end of the slide groove away from the central axis of the drive shaft.

[0021] Preferably, a bearing I is sleeved on one side of each follower rod, and the bearing I is embedded in the slide groove and is rotatably connected to the driving member.

[0022] Preferably, each of the two axial ends of the driving shaft is respectively sleeved with a bearing II, a fixing groove is opened inside the outer shell for the bearing II, and the bearing II is embedded in the fixing groove and fixedly connected to the outer shell.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The utility model cooperates with the rack and the driven gear so that the movement process of the sliding rod is linked to the movement process of the sound insulation strip. That is, when the sliding rod is squeezed to the right by the door frame, the sound insulation strip can move downward synchronously to block the gap between the door body and the ground to achieve sound insulation. This can further adapt to the actual use scenario and ensure the sound insulation effect after closing the door body without causing inconvenience in daily use.

[0025] The utility model realizes the purpose of changing the relative height of the follower rod, that is, the sound insulation strip, by constraining the two ends of the slide groove and the central axis of the drive shaft. This fully reduces the horizontal force exerted on the follower rod during the up and down movement through the movement mode of arc and longer action trajectory, thereby effectively reducing friction and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the position relationship between the outer shell and the sound insulation strip of the utility model;

[0028] Figure 3 This is a schematic diagram of the internal structure of the outer shell of the utility model;

[0029] Figure 4 This is a schematic diagram of the cooperation between the follower rod and the slide groove of the utility model;

[0030] Figure 5 It is a schematic diagram of the meshing relationship between the driven gear and the rack of the utility model.

[0031] In the figure: 1. door body; 2. outer shell; 3. sound insulation strip; 4. slide rod; 5. limit plate; 6. mounting plate; 7. fixing part; 8. tension spring; 9. fixing groove; 10. slide rail; 11. driven gear; 12. bearing II; 13. drive shaft; 14. driving part; 15. slide groove; 16. bearing I; 17. follower rod; 18. connecting part. DETAILED DESCRIPTION

[0032] 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.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0034] Please refer to Figure 1-5 A lifting type wooden door sound insulation strip 3 comprises a door body 1. The door body 1 is a wooden structure, which comprises a middle frame located in the center and playing a main supporting role. The front and rear sides of the middle frame are respectively fixedly connected with wooden veneers to improve the overall aesthetics.

[0035] An installation groove is opened at the lower end of the door body 1. In practice, the installation groove can be prefabricated or processed on site. Among them, on-site processing is mainly for modifying existing wooden door products. The operator can use a slotting machine or other cutting equipment on site to complete the processing and coordination of the installation groove.

[0036] An outer shell 2 is embedded in the installation groove. The outer shell 2 is the external main structure of the device, which mainly protects the internal components and is connected to the door body 1.

[0037] It should be noted that, in order to ensure the convenience of assembly and processing, the outer shell 2 of the device is constrained to be a two-section structure, and the outer shell 2 is assembled by assembling.

[0038] Specifically, the device is provided with a sound insulation strip 3 made of elastic material at the lower end of the outer shell 2. By changing the positional relationship between the sound insulation strip 3 and the door body 1, when necessary, the sound insulation strip 3 can be located under the door body 1 to block the gap between the door body 1 and the ground, thereby achieving a sound insulation effect.

[0039] Specifically, in order to adjust the position of the sound insulation strip 3, the device is provided with a plurality of limit plates 5 arranged in parallel from front to back inside the outer shell 2, each limit plate 5 is penetrated with an upper and lower axial limit hole, and a limit rod is inserted into the limit hole. By fixing the limit rod to the sound insulation strip 3 through the mounting plate 6, the movement trajectory of the sound insulation strip 3 can be constrained to ensure that the sound insulation strip 3 can only make an upper and lower linear motion.

[0040] At the same time, the device is also rotatably connected to multiple driving members 14 inside the outer shell 2 through multiple driving shafts 13 arranged in parallel on the left and right. By opening a slide groove 15 on the driving member 14, the two ends of the slide groove 15 are constrained to be unequal to the central axis of the driving shaft 13, and the inner wall of the slide groove 15 has a smooth transition. By rotating the driving member 14, the form of the follower rod 17 inserted in the slide groove 15 can be changed, and the distance between the central axis of the follower rod 17 and the central axis of the driving shaft 13 can be changed.

[0041] At this time, the lower end of the constraint follower rod 17 is fixedly connected to the mounting plate 6 through a connecting piece 18 with a U-shaped longitudinal section. Combined with the constraint of the movement trajectory of the mounting plate 6 by the limit rod, the purpose of changing the upper and lower positions of the mounting plate 6 can be achieved during the rotation of the follower.

[0042] It should be noted that compared with the traditional method of converting the direction of pressure by an inclined surface, the present device can reduce the horizontal force between the follower rod 17 and the driving member 14 under limited stroke by rotating the driving member 14 and cooperating with the sliding connection, thereby reducing friction and extending the service life.

[0043] Furthermore, the device also has a bearing Ⅰ16 sleeved on the outside of each follower rod 17, and the constraint bearing Ⅰ16 is embedded in the slide groove 15 and rotatably connected to the driving member 14. The bearing Ⅰ16 can be used to further reduce relative movement, thereby further reducing friction and extending service life.

[0044] Specifically, the device is provided with a fixing groove 9 for the drive shaft 13 inside the outer shell 2 , and two axial ends of the drive shaft 13 are inserted into the fixing groove 9 to achieve a rotational connection between the drive shaft 13 and the outer shell 2 .

[0045] Furthermore, the device also embeds a bearing II 12 in each fixing groove 9, constraining the outer wall of the bearing II 12 to be fixedly connected to the outer shell 2, and the inner wall of the outer shell 2 to be fixedly connected to the corresponding drive shaft 13, so that the bearing II 12 can be used to reduce the friction resistance encountered by the drive shaft 13 during rotation.

[0046] Specifically, in order to make the door closing action correspond to the upper and lower positions of the sound insulation strip 3, it is ensured that during the door closing process, the sound insulation strip 3 can automatically move downward to achieve the purpose of sound insulation.

[0047] The device has multiple slide rails 10 arranged in parallel from front to back on the inner wall of the outer shell 2. The slide rails 10 are fixedly connected to the inner part of the outer shell 2, and a slide rod 4 is commonly inserted into the multiple slide rails 10, thereby realizing a sliding connection between the slide rod 4 and the outer shell 2, so that the slide rod 4 can make left and right linear motion relative to the outer shell 2.

[0048] At this time, it is defined that the left rear end of the door body 1 is hinged to the corresponding left door frame (not shown in the figure). Then, during the normal door opening process, a large gap will be generated between the left end face of the door body 1 and the left door frame. At this time, if the slide bar 4 protrudes out of the mounting groove, the slide bar 4 can be synchronously pressed to slide to the right relative to the door body 1 during the process of closing the door, that is, reducing the gap between the left end face of the door body 1 and the left door frame.

[0049] Therefore, by coaxially fixing the driven gear 11 on the driving shaft 13, transmitting and connecting the rack at the upper end of the driven gear 11, and constraining the rack to be fixedly connected to the slide bar 4, the device can drive the rack during the sliding process of the slide bar 4 relative to the outer shell 2, thereby driving the driven gear 11 and the driving shaft 13 to rotate, thereby achieving the purpose of rotating the driving member 14 around the central axis of the driving shaft 13.

[0050] Specifically, in the device, a driven gear 11 is coaxially fixedly connected to the two axial ends of each driving shaft 13, and a rack is commonly connected to the upper ends of the two driven gears 11 corresponding to each driving shaft 13. This can avoid unilateral force on the driving shaft 13, increase product stability, and thus extend product service life.

[0051] Specifically, the device has a plurality of fixing members 7 with an inverted U-shaped longitudinal section arranged side by side from left to right on the slide bar 4. The fixing members 7 are constrained to be fixedly connected to the slide bar 4 so that the slide bar 4 and the fixing members 7 have the same movement trend.

[0052] At this time, the synchronous restraint fixing member 7 is fixedly connected to the rack, so the purpose of driving the rack to move left and right can be achieved through the sliding rod 4.

[0053] At the same time, combined with the structural characteristics of the fixing member 7 and the slide rail 10, the device is also provided with a left and right axial tension spring 8 between the corresponding slide rail 10 and the fixing member 7, and the two axial ends of the tension spring 8 are respectively fixedly connected to the slide rail 10 and the fixing member 7, and the tension spring 8 is sleeved on the outside of the slide rod 4. In this way, the tension spring 8 can be used to make the slide rod 4 have the effect of automatic reset.

[0054] It should be noted that, in practice, in order to adapt to the actual use process, this device needs to be constrained in normal conditions, that is, when the tension spring 8 is not affected by external forces, the left side of the slide bar 4 must protrude out of the installation groove, so that the slide bar 4 can automatically slide to the right during the door closing process, and can automatically move to the left for reset under the action of the tension spring 8 during the door opening process.

[0055] Therefore, the device also needs to be constrained. When the slide rod 4 moves to the right, that is, when the slide rod 4 is immersed in the installation groove, the follower rod 17 must be located on the side of the slide groove 15 away from the drive shaft 13. This allows the distance between the sound insulation strip 3 and the outer shell 2 to be maintained at the maximum, so that the sound insulation strip 3 can protrude from the installation groove to achieve a sound insulation effect.

[0056] At the same time, this device also needs to be constrained. After the slide rod 4 is reset under the action of the tension spring 8, the follower rod 17 should be located at one end of the slide groove 15 close to the central axis of the drive shaft 13. At this time, the distance between the sound insulation strip 3 and the outer shell 2 is the smallest, ensuring that the movement mode of the sound insulation strip 3 is correctly associated with the slide rod 4.

[0057] Furthermore, the present device constrains that when the tension spring 8 is not affected by external force, the height of the lower end surface of the sound insulation strip 3 is greater than the height of the lower end surface of the door panel, that is, the sliding rod 4 is reset, and the sound insulation strip 3 is at the top of its movement trajectory. When the user opens the door body 1 normally, the sound insulation strip 3 does not protrude from the installation groove, which can effectively prevent the sound insulation strip 3 from affecting the user's normal opening and closing of the door.

[0058] In actual use, the utility model:

[0059] First, it is defined that during normal use, the door body 1 is in an open state. At this time, the tension spring 8 is not affected by external forces, and the sound insulation strip 3 is completely immersed in the installation groove;

[0060] Afterwards, when the user closes the door body 1, as the distance between the left end face of the door body 1 and the left door frame is reduced, the slide bar 4 is squeezed and moves to the right synchronously. At this time, the rack follows the slide bar 4 to move to the right, and the distance between the follower rod 17 and the drive shaft 13 increases continuously as the drive member 14 rotates. When the door body 1 is completely closed, the sound insulation strip 3 completely protrudes out of the installation groove;

[0061] Finally, the user opens the door body 1 again. As the distance between the left end face of the door body 1 and the left door frame increases, the tension spring 8 drives the slide bar 4 to reset. At this time, the rack follows the slide bar 4 to move to the left, and the distance between the follower rod 17 and the drive shaft 13 decreases continuously as the drive member 14 rotates. When the door body 1 is fully opened, the sound insulation strip 3 is completely immersed in the installation groove.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting type wooden door sound insulation strip, characterized by: It comprises a door body (1), wherein a mounting groove is provided at the lower end of the door body (1), and an outer shell (2) is embedded in the mounting groove; A plurality of driving members (14) are arranged in parallel from left to right in the outer shell (2), and a front-to-rear axial driving shaft (13) is fixedly connected to the upper end of each driving member (14), and the driving shaft (13) is rotatably connected to the outer shell (2); A slide groove (15) is provided at the lower end of each driving member (14), and the distances between the two ends of the slide groove (15) and the central axis of the corresponding driving shaft (13) are unequal, and the inner wall of the slide groove (15) has a smooth transition; A follower rod (17) is inserted into each of the slide grooves (15), and a U-shaped connecting piece (18) is fixedly connected to the lower end of the follower rod (17), and a mounting plate (6) is fixedly connected to the lower ends of the plurality of connecting pieces (18), and a sound insulation strip (3) made of elastic material is fixedly connected to the lower end of the mounting plate (6); A plurality of limit plates (5) are arranged in parallel from left to right in the outer shell (2), each limit rod is provided with a limit hole in the upper and lower axial directions, and a limit rod is inserted into each limit hole, and the lower end of the limit rod is fixedly connected to the mounting plate (6); The two axial ends of each driving shaft (13) are coaxially fixedly connected to a driven gear (11), and the upper ends of the two driven gears (11) corresponding to the single driving shaft (13) are commonly connected to a rack through transmission; A plurality of slide rails (10) are arranged in parallel from left to right in the outer shell (2); a slide rod (4) is commonly inserted into the interior of the plurality of slide rails (10); and the upper ends of the plurality of racks are commonly fixedly connected to the slide rod (4).

2. A lifting type wooden door sound insulation strip according to claim 1, characterized in that: A fixing member (7) having an inverted U-shaped longitudinal section is fixedly connected to the upper end of each rack, a tension spring (8) is fixedly connected to the left end face of the fixing member (7), and the tension spring (8) is sleeved on the outside of the slide rod (4); Each of the fixing members (7) is correspondingly provided with a slide rail (10), and the other axial end of each tension spring (8) is fixedly connected to the corresponding slide rail (10).

3. A lifting type wooden door sound insulation strip according to claim 2, characterized in that: When the tension spring (8) is not affected by external force, the left side of the slide bar (4) protrudes out of the mounting groove, and the follower rod (17) is located at one end of the slide groove (15) close to the central axis of the drive shaft (13).

4. The lifting type wooden door sound insulation strip according to claim 3, characterized in that: When the tension spring (8) is not affected by external force, the height of the lower end surface of the sound insulation strip (3) is greater than the height of the lower end surface of the door panel.

5. The lifting type wooden door sound insulation strip according to claim 4, characterized in that: When the tension spring (8) is immersed in the installation groove, the height of the lower end surface of the sound insulation strip (3) is less than the height of the lower end surface of the door panel, and the follower rod (17) is located at the end of the slide groove (15) away from the central axis of the drive shaft (13).

6. The lifting type wooden door sound insulation strip according to claim 1, characterized in that: A bearing I (16) is sleeved on one side of each follower rod (17), and the bearing I (16) is embedded in the slide groove (15) and is rotatably connected to the driving member (14).

7. The lifting type wooden door sound insulation strip according to claim 1, characterized in that: Each of the two axial ends of the driving shaft (13) is respectively sleeved with a bearing II (12); a fixing groove (9) is provided inside the outer shell (2) for the bearing II (12); the bearing II (12) is embedded in the fixing groove (9) and fixedly connected to the outer shell (2).

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