Sealed grinding structure for wall grinding machine

Abstract

The utility model relates to the technical field of wall polishing, in particular to a sealed polishing structure for a wall polisher, which is mounted in a protective cover and comprises a polishing disc, a counterweight smooth part and a support rubber part, a driving component is further mounted in the protective cover and detachably connected with the polishing disc, an annular groove is formed in the upper end of the polishing disc, and the counterweight smooth part is detachably connected with the support rubber part. A limiting flange is arranged on the inner edge of the annular groove in an upward protruding mode, the balance weight smooth piece arranged in an annular mode is embedded in the annular groove, the supporting rubber piece is annular and coaxially sleeved with the limiting flange, the lower end of the supporting rubber piece is attached to the upper end of the balance weight smooth piece, and the upper portion of the supporting rubber piece is connected with the protective cover in an inserted mode. The balance weight smooth piece is installed in the polishing disc, the weight of the polishing disc is increased, the annular supporting rubber piece is arranged, the polishing disc is further provided with an additional closed-loop support, and therefore the polishing disc cannot shake easily, and the polishing effect of a wall face is guaranteed. And due to the arrangement of the supporting rubber part, the sealing performance of the wall face grinding machine is higher during ceiling suction.

Description

TECHNICAL FIELD

[0001] The utility model relates to wall surface polishing technical field, concretely relates to a sealing polishing structure for wall surface polisher. BACKGROUND

[0002] Wall surface polisher is widely used in indoor decoration, is used for polishing and cleaning wall surface, and the wall surface polisher usually includes driving part, casing, polishing piece, and the existing wall surface polisher mostly adopts sandpaper stick disc as polishing piece, and the sandpaper stick disc is usually light in quality, and the driving part is connected with the center part of polishing piece, in addition to other support, so that after the high-speed swing rotation work of driving part for a period of time, the polishing piece can be slightly loose and easily shake, and the contact with wall surface is uneven, which leads to the polishing piece to shake easily when polishing wall surface, and affects the effect of wall surface polishing.

[0003] For example, the wall surface polisher disclosed in the patent with the publication number CN203109737U, and the hand-held wall surface polisher disclosed in the patent with the publication number CN204295449U only have driving part, and the driving part is connected with the polishing disc to drive, and the polishing disc is not provided with counterweight piece and additional support piece. SUMMARY

[0004] The utility model discloses a sealing polishing structure for wall surface polisher, which is installed in the protective cover shell and includes a polishing disc, a counterweight smooth piece and a support rubber piece. The driving assembly is also installed in the protective cover shell and detachably connected with the polishing disc. An annular groove is formed in the upper end of the polishing disc, and a limiting flange is protruded upward from the inner edge of the annular groove. The counterweight smooth piece is annularly arranged and embedded in the annular groove. The support rubber piece is annularly and coaxially arranged with a gap between the limiting flange and the support rubber piece. The lower end of the support rubber piece is attached to the upper end of the counterweight smooth piece, and the upper part of the support rubber piece is inserted into the protective cover shell.

[0005] To solve the above problems, the utility model adopts the following scheme:

[0006] A sealing polishing structure for wall surface polisher, which is installed in the protective cover shell and includes a polishing disc, a counterweight smooth piece and a support rubber piece. The driving assembly is also installed in the protective cover shell and detachably connected with the polishing disc. An annular groove is formed in the upper end of the polishing disc, and a limiting flange is protruded upward from the inner edge of the annular groove. The counterweight smooth piece is annularly arranged and embedded in the annular groove. The support rubber piece is annularly and coaxially arranged with a gap between the limiting flange and the support rubber piece. The lower end of the support rubber piece is attached to the upper end of the counterweight smooth piece, and the upper part of the support rubber piece is inserted into the protective cover shell.

[0007] In the above scheme, the counterweight smooth member is installed in the polishing disc to increase the weight of the polishing disc, and a supporting rubber member is arranged between the upper end of the counterweight smooth member and the protective shell, so that the polishing disc is supported not only by the driving assembly but also by the supporting rubber member, thereby increasing the supporting stress points of the polishing disc and making the support more uniform, so that the polishing disc does not easily shake even after a period of high-speed rotation, ensuring that the polishing disc plane in contact with the wall surface is always flat, thereby ensuring the polishing effect of the wall surface; at the same time, the supporting rubber member makes the cavity formed by the wall surface and the protective shell have stronger sealing performance during wall surface polishing, thereby ensuring the sealing performance of the wall surface polisher when it is suctioned, thereby reducing the possibility of the wall surface polisher falling off when it is suctioned; the upper part of the supporting rubber member is inserted into the annular groove of the protective shell and coaxially and gapingly sleeved on the limiting flange, so that even if the supporting rubber member slightly deviates during the rotation of the driving assembly, the whole supporting rubber member is still limited in the annular groove and can be blocked by the limiting flange, and will not deviate from the polishing disc.

[0008] Preferably, the inner wall of the annular groove is provided with a plurality of protruding parts at equal intervals along the circumferential direction, and the counterweight smooth member is correspondingly provided with a plurality of embedding grooves, and the plurality of embedding grooves are one-to-one correspondingly installed with the plurality of protruding parts.

[0009] The above arrangement makes the counterweight smooth member stable when it is installed in the polishing disc, and can stably drive the counterweight smooth member to rotate together when the polishing disc is driven to rotate, without relative rotation between the two due to low rotation speed or the like, thereby ensuring the weight-increasing effect of the counterweight smooth member on the polishing disc.

[0010] Preferably, the counterweight smooth member is made of iron material, and its upper end surface is smoothed.

[0011] In the above arrangement, iron material is used to satisfy its weight-increasing effect and to be more wear-resistant, and has a small friction coefficient, and is further smoothed to further reduce the friction between the counterweight smooth member and the supporting rubber member and to increase the service life of the supporting rubber member.

[0012] Preferably, the lower end of the supporting rubber member is further provided with a smooth patch to further reduce the friction between the counterweight smooth member and the supporting rubber member.

[0013] Preferably, the area of the upper end surface of the counterweight smooth member is larger than the area of the lower end surface of the supporting rubber member, and the lower end of the supporting rubber member is located at the middle part of the upper end of the counterweight smooth member at the initial installation.

[0014] The above arrangement makes the supporting rubber member be located in the upper end surface of the counterweight smooth member with a high probability even if it slightly deviates, thereby ensuring that the friction between the two is always small.

[0015] As preferred, the support rubber piece has a transverse U-shaped part in the middle part, and a buffer space is formed between the upper part and the lower part of the support rubber piece.

[0016] The transverse U-shaped part of the support rubber piece is easily deformed through the buffer space and quickly restored when the polishing disc produces slight up-and-down vibration, thereby buffering the vibration.

[0017] As preferred, the protective shell is provided with a stable support plate capable of stably supporting the support rubber piece, and the stable support plate is supported on the upper end of the buffer space.

[0018] The above arrangement ensures that the support rubber piece can stably support and connect the polishing disc and the protective shell.

[0019] As preferred, the support rubber piece has a protruding plug-in part protruding upward in the upper part of the support rubber piece, the protruding plug-in part is annular and is inserted into a plug-in groove of the protective shell, the support rubber piece is further provided with an annular limiting groove in the upper part of the support rubber piece, and the protective shell is provided with an annular limiting block embedded in the annular limiting groove.

[0020] The above arrangement further ensures the stable connection between the support rubber piece and the protective shell and the stable support of the support rubber piece on the polishing disc.

[0021] As preferred, the inner and outer walls of the protruding plug-in part are provided with close-fitting grooves in the middle parts, and the close-fitting grooves are tightly fitted with the inner wall of the plug-in groove.

[0022] The above arrangement enables the protruding plug-in part to be tightly contacted with the plug-in groove, and also enables the protruding plug-in part to be conveniently inserted into the plug-in groove, so that the friction between the two is large and the protruding plug-in part is not easy to rotate.

[0023] As preferred, the polishing disc is provided with a mounting cavity, the bottom wall of the mounting cavity is provided with a threaded through hole along the circumferential direction of the bottom wall, and the driving assembly is inserted into the mounting cavity and fixedly connected with the driving assembly through a bolt passing through the threaded through hole.

[0024] As preferred, the driving assembly sequentially comprises a driving motor, an output shaft and a power transmission part according to the power transmission path of the driving assembly, the power transmission part is inserted into the mounting cavity and fixedly connected with the polishing disc through a bolt.

[0025] The above arrangement enables the driving assembly to be detachably connected with and driven by the polishing disc, thereby ensuring the basic wall polishing function of the polishing disc.

[0026] The beneficial effects of the utility model are as follows:

[0027] The utility model discloses a counterweight smooth spare is installed in the polishing disc, has increased the weight of polishing disc, thereby make the polishing disc when rotating not easily shake, still set up annular support rubber spare between the protection shell between the counterweight smooth spare upper end, make the polishing disc in addition to the support of drive assembly, still have the closed -loop support of support rubber spare, make the polishing disc support stress point increase, and support is more even, thereby further make the polishing disc not easily shake, guarantee and the polishing disc plane department of contact of wall surface are always even, thereby guarantee the polishing effect of wall surface.

[0028] The support rubber spare of the utility model still make when wall surface polishing, the cavity leakproofness of wall surface and protection shell formation is stronger, guarantee the leakproofness of wall surface polisher when sucking the ceiling, thereby reduce the possibility of wall surface polisher falling when sucking the ceiling.

[0029] The counterweight smooth spare of the utility model is arranged to be smooth, so as to reduce the friction between the counterweight smooth spare and the support rubber spare, improve the wear resistance of the support rubber spare and prolong the service life. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is part internal structure section view of the utility model for wall surface polisher;

[0031] Figure 2 It is internal structure schematic view of the utility model;

[0032] Figure 3 It is Figure 1 The local enlarged view of I place in;

[0033] Figure 4 It is Figure 2 The local enlarged view of II place in;

[0034] Figure 5 It is disassembly structure schematic view of the utility model.

[0035] Fig. 10, polishing disc 20, counterweight smooth spare 30, support rubber spare 40, drive assembly 50, plug-in slot 11, annular limiting block 12, stable support plate 13, annular groove 21, limiting flange 22, convex part 23, mounting cavity 24, threaded through hole 241, embedded groove 31, transverse U-shaped part 32, buffer space 33, convex plug-in part 41, annular limiting groove 42, close-to-fit thread 411, drive motor 51, output shaft 52, power transmission part 53. DETAILED DESCRIPTION

[0036] The embodiments of the present application will be described in detail with specific examples. Those skilled in the art can easily understand other advantages and functions of the present application from the content disclosed in the specification. The present application can also be implemented or applied in other different specific embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0037] It should be noted that the diagrams provided in the following examples only schematically illustrate the basic concept of the present application, and only the components related to the present application are shown in the diagrams, not the number, shape and size of the components when actually implemented. The shape, number and proportion of each component when actually implemented can be arbitrarily changed, and the layout pattern of the components can also be more complex.

[0038] Example 1:

[0039] Reference Figures 1-5 The present embodiment provides a sealing polishing structure for a wall polishing machine, which is installed in a protective cover 10 and includes a polishing disc 20, a counterweight smooth part 30 and a supporting rubber part 40. A driving assembly 50 is also installed in the protective cover 10 and detachably connected with the polishing disc 20. An annular groove 21 is formed in the upper end of the polishing disc 20, and a limiting flange 22 is protruded upward from the inner edge of the annular groove 21. The counterweight smooth part 30 is annularly arranged and embedded in the annular groove 21. The supporting rubber part 40 is annular and coaxially sleeved on the limiting flange 22. The inner wall of the supporting rubber part 40 is at a certain distance from the outer peripheral wall of the limiting flange 22. The lower end of the supporting rubber part 40 is attached to the upper end of the counterweight smooth part 30, and the upper part of the supporting rubber part 40 is inserted into the protective cover 10.

[0040] Specifically, the insertion structure of the upper part of the supporting rubber part 40 and the protective cover 10 is that the supporting rubber part 40 has a protruding insertion part 41 protruded upward at the upper part thereof, the protruding insertion part 41 is annular and inserted into an insertion groove 11 of the protective cover 10, the insertion groove 11 is also annular, and the supporting rubber part 40 is further provided with an annular limiting groove 42 at the upper part thereof, and an annular limiting block 12 of the protective cover 10 is embedded in the annular limiting groove 42. The mutual insertion of the upper part of the supporting rubber part 40 and the protective cover 10 further ensures the stable connection of the supporting rubber part 40 and the counterweight smooth part 30, thereby ensuring the stable support of the supporting rubber part 40 to the polishing disc 20.

[0041] To ensure that the counterweight smooth part 30 is stably installed in the annular groove 21 and is not easy to rotate relative to the polishing disc 20 when the polishing disc 20 rotates, thereby ensuring the weight-increasing effect of the counterweight smooth part 30 on the polishing disc 20. The inner wall of the annular groove 21 is provided with a plurality of protrusions 23 along the circumferential direction thereof at equal intervals, and the counterweight smooth part 30 is correspondingly provided with a plurality of embedding grooves 31, which are one-to-one corresponding to the plurality of protrusions 23 and are installed. In this embodiment, both the protrusions 23 and the embedding grooves 31 are provided with six.

[0042] To reduce the friction between the counterweight smooth part 30 and the supporting rubber part 40 and increase the service life of the supporting rubber part 40. The upper end surface of the counterweight smooth part 30 is smooth. In this embodiment, the counterweight smooth part 30 is made of iron, which not only meets the requirement of increasing the weight of the polishing disc 20 but also is more wear-resistant and has a smaller friction coefficient. The smooth patch (not shown in the figure) is attached to the lower end of the supporting rubber part 40 to further reduce the friction between the counterweight smooth part and the supporting rubber part. The smooth patch can be made of polytetrafluoroethylene material, and the surface connected to the supporting rubber part 40 is subjected to sodium naphthalene etching or plasma treatment to facilitate adhesion to the supporting rubber part 40. The adhesion is realized through an adhesive. When the sander is in use, lubricating oil can be added between the smooth patch and the counterweight smooth part to further reduce the friction.

[0043] Since the supporting rubber part 40 may have a small probability of slight deviation under the action of centrifugal force or friction, the lower end of the supporting rubber part 40 can be located on the smooth upper end of the counterweight smooth part 30 after the slight deviation. The area of the upper end surface of the counterweight smooth part 30 is larger than that of the lower end surface of the supporting rubber part 40. At the initial installation, the lower end of the supporting rubber part 40 is located in the middle of the upper end of the counterweight smooth part 30.

[0044] During the polishing process, the polishing disc 20 may be subjected to external force in the up-down direction, causing slight vibration. To improve the buffering of the supporting rubber part 40 to the vibration, the supporting rubber part 40 has a transverse U-shaped part 32 in the middle, and a buffering space 33 is formed between the upper part and the lower part of the supporting rubber part 40. Thus, the transverse U-shaped part 32 in the supporting rubber part 40 is easy to deform and quickly recover through the buffering space 33, thereby buffering the vibration.

[0045] Due to the formation of the buffering space 33, the upper part of the supporting rubber part 40 may be easy to deform downward. Therefore, a stable support plate 13 is arranged in the protective shell 10, which abuts against the upper end of the buffering space 33 and is used to support the upper part of the supporting rubber part 40.

[0046] In order to realize the tight fit between the supporting rubber part 40 and the insertion slot 11, the friction between them is increased to stabilize the supporting rubber part 40. The inner and outer walls of the convex insertion part 41 are provided with close-fitting grooves 411 in the middle part, which are tightly fitted with the inner wall of the insertion slot 11 to realize the tight fit. The close-fitting grooves 411 are arranged in the middle part of the convex insertion part 41 to facilitate the insertion of the convex insertion part 41 into the insertion slot 11. Therefore, when the supporting rubber part 40 has a tendency to rotate due to the rotation of the polishing disc 20, the friction can hinder the movement of the supporting rubber part 40, thereby affecting the support of the polishing disc 20.

[0047] In order to realize the connection and driving of the polishing disc 20 by the driving assembly 50, the structure is arranged, but the structure is relatively mature in the prior art, so in this embodiment, it is not described in detail. The polishing disc 20 is provided with a mounting cavity 24, and the bottom wall of the mounting cavity 24 is provided with a threaded hole 241 along the circumferential direction. The driving assembly 50 is inserted into the mounting cavity 24 and connected and fixed with the driving assembly 50 by the threaded hole 241. The driving assembly 50 includes a driving motor 51, an output shaft 52, and a power transmission part 53 according to the power transmission path. The power transmission part 53 is inserted into the mounting cavity 24 and connected and fixed with the polishing disc 20 by a bolt.

[0048] The working principle of the embodiment is as follows:

[0049] The counterweight smooth part 30 is installed in the polishing disc 20, which increases the weight of the polishing disc 20, so that the polishing disc 20 does not easily shake during rotation. The annular supporting rubber part 40 is arranged between the upper end of the counterweight smooth part 30 and the protective shell, so that the polishing disc 20 has additional closed-loop support, and the polishing disc 20 is less likely to shake.

[0050] At the same time, the supporting rubber part 40 makes the cavity formed by the wall surface and the protective shell 10 more airtight, thereby ensuring the airtightness of the wall surface polisher when it is suctioned, and reducing the possibility of falling off when it is suctioned.

[0051] The working process of the embodiment is as follows: the driving assembly 50 drives the polishing disc 20 to rotate, and the polishing disc 20 drives the counterweight smooth part 30 to rotate. Under normal circumstances, the counterweight smooth part 30 rotates relative to the supporting rubber part 40, and the supporting rubber part 40 is in a static state. If the rotating speed is very fast, the counterweight smooth part 30 drives the supporting rubber part 40 to rotate by overcoming the friction, and the friction does not affect the wall surface polishing of the polishing disc 20.

[0052] The above description is only one specific example of the present application, and does not constitute any limitation on the present application. Obviously, for those skilled in the art, after understanding the content and principle of the present application, various modifications and changes in form and details can be made without departing from the principle and structure of the present application, but these modifications and changes based on the idea of the present application are still within the protection scope of the claims of the present application.

Claims

1. A sealed grinding structure for a wall sander, which is installed inside a protective cover (10), and a drive assembly (50) is also installed inside the protective cover (10), characterized in that, The assembly includes a grinding disc (20), a counterweight smoothing component (30), and a supporting rubber component (40). The grinding disc (20) is detachably connected to the drive assembly (50). An annular groove (21) is provided at the upper end of the grinding disc (20). A limiting flange (22) is provided on the inner edge of the annular groove (21). The counterweight smoothing component (30) is arranged in an annular shape and is fitted into the annular groove (21). The supporting rubber component (40) is annular and coaxially spaced within the limiting flange (22). The lower end of the supporting rubber component (40) is attached to the upper end of the counterweight smoothing component (30). The upper part of the supporting rubber component (40) is inserted into the protective cover (10).

2. The sealed sanding structure for a wall sander according to claim 1, characterized in that, The inner wall of the annular groove (21) is provided with multiple protrusions (23) at equal intervals along its circumference, and the counterweight smooth part (30) is provided with multiple fitting grooves (31) respectively. The multiple fitting grooves (31) and the multiple protrusions (23) are installed one by one.

3. The sealed sanding structure for a wall sander according to claim 1, characterized in that, The counterweight smoothing component (30) is made of iron, and its upper surface is smoothed.

4. The sealed sanding structure for a wall sander according to any one of claims 1-3, characterized in that, The upper surface area of ​​the counterweight smoothing component (30) is larger than the lower surface area of ​​the supporting rubber component (40). At the initial stage of installation, the lower end of the supporting rubber component (40) is located in the middle of the upper end of the counterweight smoothing component (30).

5. The sealed sanding structure for a wall sander according to claim 1, characterized in that, The supporting rubber component (40) has a transverse U-shaped portion (32) in the middle, and a buffer space (33) is formed between the upper and lower parts of the supporting rubber component (40).

6. The sealed sanding structure for a wall sander according to claim 5, characterized in that, The protective cover (10) is provided with a stable support plate (13) that can stably support the rubber part (40), and the stable support plate (13) is supported on the upper end of the buffer space (33).

7. The sealed sanding structure for a wall sander according to claim 1, characterized in that, The supporting rubber component (40) has an upwardly protruding insertion part (41) on its upper part. The protruding insertion part (41) is annular and is inserted into the insertion groove (11) of the protective cover (10). The supporting rubber component (40) also has an annular limiting groove (42) on its upper part. The annular limiting block (12) of the protective cover (10) is embedded in the annular limiting groove (42).

8. The sealed sanding structure for a wall sander according to claim 7, characterized in that, The inner and outer walls of the protruding insertion part (41) are both provided with tight-fitting grooves (411), and a tight fit is achieved by the tight-fitting grooves (411) closely fitting the inner wall of the insertion groove (11).

9. The sealed sanding structure for a wall sander according to claim 1, characterized in that, The grinding disc (20) has an installation cavity (24), and the bottom wall of the installation cavity (24) has a threaded through hole (241). The drive assembly (50) is inserted into the installation cavity (24) and is connected to the drive assembly (50) by bolts passing through the threaded through hole (241).

10. The sealed sanding structure for a wall sander according to claim 9, characterized in that, The drive assembly (50) includes, in sequence, a drive motor (51), an output shaft (52), and a power transmission component (53) according to its power transmission path. The power transmission component (53) is inserted into the mounting cavity (24) and fixedly connected to the grinding disc (20) by bolts.

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