CN217317281U

CN217317281U - Manual internal corner polisher

Info

Publication number: CN217317281U
Application number: CN202220441798.3U
Authority: CN
Inventors: 陈伟; 陈佳佳; 徐秀姿
Original assignee: Individual
Current assignee: Zhejiang Nengzhe Technology Co ltd
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-08-30
Anticipated expiration: 2032-03-02

Abstract

The utility model discloses a manual reentrant corner sander, aim at overcoming the poor problem of effect of polishing among the prior art, it includes mount pad and elastic component, the mount pad includes first plane portion, be used for installing the grinding apparatus on the first plane portion, the mount pad is two, two mount pads can take place relative rotation, if when two mount pads take place relative rotation, contained angle between the first plane portion of two mount pads changes, the elastic component is used for forcing the contained angle between the first plane of two mount pads to keep on initial angle, be formed with the thickness reduction hole on the elastic component.

Description

Manual internal corner polisher

Technical Field

The utility model belongs to a polishing tool, in particular to a manual internal corner polisher.

Background

The grinding tool is an apparatus capable of grinding the surface of an object to make the surface of the object smooth. In construction work, it is generally used to polish wall putty. The traditional grinding tool comprises a handle and a grinding head, and when the grinding tool is used, the grinding head rubs back and forth on the surface of an object, so that the effect of grinding the surface of the object is achieved.

The Chinese patent of the prior application number '201510675380.3' discloses a wall internal corner grinding tool, which comprises a grinding block main body, a grinding block main body and a grinding block main body, wherein the grinding block main body comprises two side surfaces, and the intersection of the two side surfaces is a grinding edge angle; be equipped with the layer of polishing on the side of polishing block main part, be equipped with the polishing strip that sets up along polishing block main part length direction on the edges and corners of polishing, be equipped with the sawtooth of polishing on the polishing strip, in the use, can ensure that reentrant corner putty is polished smoothly, especially polish the strip and enable the reentrant corner straight line obvious, guarantee that the reentrant corner is pleasing to the eye, improve the efficiency of construction.

However, the prior art is not perfect, the included angle between the two side surfaces is not adjustable, and if the existing polishing tool polishes at the position where the included angle between the two side surfaces is inconsistent with the internal corner of the wall body, the problems of insufficient contact and uneven polishing exist.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art and the problems of the prior art, the utility model provides a manual internal corner sander.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a manual internal corner sander, comprising:

the grinding tool comprises two mounting seats and a grinding tool body, wherein the two mounting seats are used for mounting a grinding tool, and if the two mounting seats rotate relatively, an included angle between the first plane parts of the two mounting seats is changed;

and the elastic piece is used for forcing the included angle between the first planes of the two mounting seats to be kept at the initial angle, and the thickness reducing hole is formed in the elastic piece.

Preferably, the initial angle is 91 ° to 100 °.

Preferably, a triangular region is formed between the two mounting seats, and the elastic member is disposed in the triangular region.

Preferably, the thickness reducing holes are at least two, and the elastic member is further provided with elastic supporting arms which are arranged between the adjacent thickness reducing holes.

Preferably, the cross section of the thickness reducing hole is circular or elliptical.

Preferably, the device further comprises a support frame, the elastic element is fixedly arranged on the support frame, and at least one mounting seat is fixedly arranged on the elastic element.

Preferably, the mounting seat comprises a second flat surface portion, the elastic member comprises a third flat surface portion, and the second flat surface portion is attached to the third flat surface portion.

Preferably, the support frame is provided with a handle.

Preferably, the handle is arranged on the support frame through a joint bearing.

Preferably, the handle is adjustable in length and comprises a rod member and a tube member, the rod member being slidably disposed within the tube member, the rod member being extendable out of the tube member or retractable within the tube member if the rod member slides within the tube member.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

(1) the utility model discloses in, the contained angle between two first plane portions can change, and the contained angle between two grinding apparatus also can change for two grinding apparatus can be laminated respectively on the wall of reentrant corner both sides, have the better effect of polishing on the wall body of different reentrant corner angles, consequently this manual reentrant corner sander has application scope extensively, polish effectual advantage.

(2) The utility model discloses in, the elastic component plays the effect that resets to two mount pads to in next use, in addition, when polishing the reentrant corner, the elastic component still forces the grinding apparatus to keep laminating on the wall, has further improved the effect of polishing.

(3) The design that reduces thick hole has reduced the wall thickness of elastic component for the elastic component is rich in elasticity more, helps the user can easily overcome the elasticity of elastic component and laminate the first plane portion of two mount pads respectively on the wall of reentrant corner both sides, reduces thick hole moreover and has still realized the lightweight design of elastic component, has reduced the use of material as far as possible on the basis of guaranteeing structural strength, has reduced the material cost of elastic component.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of the detachable handle of the present invention;

FIG. 3 is a schematic perspective view of the present invention with the grinding tool installed and the handle removed;

fig. 4 is a schematic sectional structure of the present invention;

fig. 5 is one of the explosion structure diagrams of the present invention;

fig. 6 is a second schematic diagram of the explosion structure of the present invention;

in the figure: 1-mounting seat, 2-elastic part, 3-support frame, 4-joint bearing, 5-handle, 6-grinding tool, 7-bolt, 8-nut, 11-first plane part, 12-second plane part, 21-thickness reducing hole, 22-third plane part, 23-elastic support arm, 31-partition plate, 32-base, 33-ribbed plate, 311-edge, 51-rod part and 52-pipe part.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 6, a manual internal corner sander includes a mounting base 1 and an elastic member 2.

The mounting base 1 comprises a first plane 11, and the first plane 11 is used for mounting the grinding tool 6. The first plane 11 refers to a plane portion of the mounting base 1 for mounting the grinding tool 6. The grinding tool 6 refers to a tool for grinding, lapping and polishing. For example, the abrasive article 6 may be sandpaper. The grinding tool 6 can be mounted on the first plane 11 by means of gluing, riveting, clamping, etc. In this embodiment, any one of the mounting bases 1 has only one first plane 11.

The mounting bases 1 are two, the two mounting bases 1 can rotate relatively, and if the two mounting bases 1 rotate relatively, the included angle between the first plane parts 11 of the two mounting bases 1 is changed.

The two installation bases 1 can rotate relatively, which means that any installation base 1 can rotate relative to the other installation base 1. The change of the included angle between the first plane parts 11 of the two mounting seats 1 means that the included angle between the two first plane parts 11 can be increased or decreased. In the in-service use, if the contained angle between two first plane portions 11 under the exogenic action can grow or when diminishing, contained angle between two grinding apparatus 6 also grow or diminish for two grinding apparatus 6 can laminate respectively on the wall of reentrant corner both sides, have better effect of polishing on the wall body that is applicable to different reentrant corner angles, consequently this manual reentrant corner sander has application scope extensively, the effectual advantage of polishing.

The elastic member 2 is used for forcing the included angle between the first plane parts 11 of the two mounting seats 1 to be maintained at the initial angle, and the thickness reducing hole 21 is formed on the elastic member 2.

Wherein, the elastic member 2 refers to a member made of an elastic material. The resilient material may be plastic, rubber, etc. The initial angle refers to the angle between the first plane parts 11 of the two mounting bases 1 after no external force or the external force is removed. In actual use, when the contained angle between the first plane portion 11 of two mount pads 1 changes, then elastic deformation takes place for elastic component 2, removes the exogenic action back this moment, and elastic component 2 tends to resume original shape and release elastic potential energy, and elastic component 2 drives the contained angle between the first plane portion 11 of two mount pads 1 and resumes to initial angle, and elastic component 2 plays the effect that resets to two mount pads 1 to in use next time. In addition, when the internal corner is polished, the elastic piece 2 also forces the grinding tool 6 to be attached to the wall surface, so that the polishing effect is further improved.

The elastic member 2 is formed with a reduced thickness hole 21.

Wherein, the thickness reducing hole 21 can be formed on the elastic member 2 by using an integral molding or drilling process. The thickness reducing holes 21 may be through holes or blind holes or slots, etc. The design that reduces thick hole 21 has reduced the wall thickness of elastic component 2, make elastic component 2 be rich in elasticity more, help the user to overcome elastic component 2's elasticity and laminate the first plane portion 11 of two mount pads 1 respectively on the wall of reentrant corner both sides easily, reduce thick hole 21 moreover and still realized elastic component 2's lightweight design, the use of material has been reduced as far as on the basis of guaranteeing structural strength, the material cost of elastic component 2 has been reduced.

The initial angle is 91-100 degrees.

In the construction standard of the wall body, the standard included angle between the wall surfaces at two sides of the internal corner of the wall body is 90 degrees. However, under the influence of the process, material expansion and flatness of the wall, the actual angle between the wall surfaces on both sides of the internal corner of the wall is not equal to 90 degrees. When using this manual reentrant corner sander to polish the reentrant corner, two mount pads 1 take place relative rotation and just can laminate on the wall of reentrant corner both sides, and elastic component 2 takes place elastic deformation and forces grinding apparatus 6 to hug closely and polish on corresponding the wall, has consequently further improved the effect of polishing. In the present embodiment, the initial angle is preferably 95 °.

A triangular area is formed between the two mounting seats 1, and the elastic piece 2 is arranged in the triangular area.

The triangular region refers to a region formed by the intersection of two mounting seats 1 (or the extending direction thereof) and located between the two mounting seats 1, and the overall structure of the region is triangular or approximately triangular. The elastic part 2 is arranged in the triangular area, and the compactness of the structure is improved. In addition, in practical use, the grinding tool 6 is positioned on the outer sides of the two mounting seats 1, and the elastic part 2 is positioned on the inner sides of the two mounting seats 1, so that the grinding tool and the elastic part are separated from each other and do not interfere with each other, and the working reliability is guaranteed.

The whole structure of the mounting seat 1 is plate-shaped, and the first plane part 11 is arranged on the side surface of the mounting seat 1, so that the structure is further simplified.

The number of the thickness reducing holes 21 is at least two, the elastic piece 2 is further provided with elastic supporting arms 23, and the elastic supporting arms 23 are arranged between the adjacent thickness reducing holes 21.

Wherein the elastic support arm 23 refers to a thin-walled portion on the elastic member 2. The resilient support arms 23 give the resilient member 2 structural strength and resilience. When the elastic member 2 is elastically deformed, the elastic support arms 23 are extended or shortened. The elastic supporting arms 23 are arranged between the adjacent thickness reducing holes 21, that is, the thickness reducing holes 21 are arranged on both sides of the elastic supporting arms 23, and the thickness reducing holes 21 play a role in reducing the thickness of the elastic supporting arms 23.

In the present embodiment, two or more thickness-reducing holes 21 are uniformly arranged on the elastic member 2, and the thickness of the elastic support arm 23 between adjacent thickness-reducing holes 21 is uniform, thereby ensuring that the elasticity of the elastic member 2 is substantially uniform at each position.

The cross section of the thickness reducing hole 21 is circular or oval. The length direction of the thickness reducing hole 21 and the relative rotation direction of the two mounting bases 1 are perpendicular to each other.

Wherein, the cross section is circular or oval-shaped to reduce thick hole 21 and has the advantage of avoiding stress concentration, takes place fracture scheduling problem around reducing thick hole 21 when avoiding elastic component 2 to take place deformation.

Still include support frame 3, elastic component 2 is fixed to be set up on support frame 3, has at least one mount pad 1 to fix the setting on elastic component 2.

The support frame 3 refers to a structural member for supporting and connecting other components. The fact that at least one mounting seat 1 is fixedly arranged on the elastic element 2 means that the following two conditions exist: 1. one mounting seat 1 is fixedly arranged on the support frame 3, and the other mounting seat 1 is fixedly arranged on the elastic piece 2; 2. both the mounting seats 1 are fixedly arranged on the elastic piece 2. One mounting base 1 can rotate relative to the other mounting base 1 through the elastic deformation of the elastic piece 2, and the structure is further simplified.

The mounting base 1 comprises a second flat part 12, the elastic part 2 comprises a third flat part 22, and the second flat part 12 is attached to the third flat part 22.

Wherein the second flat portion 12 refers to a flat portion on the mount 1. The third plane part 22 refers to another plane part on the elastic member 2. The second plane part 12 is attached to the third plane part 22, so that the elastic part 2 is fully contacted with the mounting base 1, and the transmission effect is improved.

The support frame 3 comprises a partition plate 31, and the two mounting seats 1 are respectively arranged on two sides of the partition plate 31.

Wherein, baffle 31 is used for keeping apart two mount pads 1, when avoiding two mount pads 1 relative rotations, takes place the problem of mutual interference.

The partition 31 is formed with an edge 311, the edge 311 is disposed at a position intersecting the extending direction of the two first plane portions 11, and the edge 311 is used for supporting the grinding tool 6.

In practical use, the edge 311 is supported on the grinding tool 6, and an edge angle is formed on the grinding tool 6, so that the grinding tool 6 is attached to an internal corner of a wall body, and the grinding effect is further improved.

The supporting frame 3 further comprises a base 32, and the base 32 and the mounting seat 1 are respectively arranged on two sides of the elastic element 2.

In actual use, the user may press the base 32 to press the grinder 6 against the internal corner, and the elastic member 2 between the mounting seat 1 and the base 32 may be elastically deformed.

Specifically, the base 32 has a plate-like overall structure. The partition 31 is detachably provided on the base 32. The detachable connection between the partition 31 and the base 32 may be a bolt 7 and a nut 8. The mount 1, the elastic member 2, and the partition plate 31 may be integrally formed together. The elastic member is a sacrificial member because it is susceptible to cracking or even breaking during recycling. If the service life of the elastic member is over, the partition plate 31 can be removed from the base 32, and then a new mounting seat 1, the elastic member 2 and the partition plate 31 are replaced.

Support frame 3 still includes floor 33, and floor 33 is used for improving support frame 3's structural strength, has seted up the constant head tank on the elastic component 2, and floor 33 sets up in the constant head tank to floor 33 plays the effect of location to elastic component 2. In the present embodiment, specifically, the rib 33 is also in a plate shape, the rib 33 and the partition 31 are integrally formed, and the rib 33 is provided on both sides of the partition 31.

Be provided with handle 5 on the support frame 3, handle 5 is used for supplying people's gripping, and this manual reentrant corner sander of the handheld use of person of facilitating the use.

The handle 5 is arranged on the support frame 3 through the joint bearing 4, the handle 5 is fixedly arranged on the joint bearing 4, and the joint bearing 4 is hinged on the support frame 3. The handle 5 can rotate in any direction of the support frame 3 through the joint bearing 4, and further a user can use the manual internal corner sander conveniently.

The handle 5 is adjustable in length, and the handle 5 includes a rod 51 and a tube 52, wherein the rod 51 is slidably disposed in the tube 52, and if the rod 51 slides in the tube 52, the rod 51 can extend out of the tube 52 or retract in the tube 52.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A manual reentrant corner sander, comprising:

the mounting bases (1) comprise first plane portions (11), the first plane portions (11) are used for mounting grinding tools (6), the number of the mounting bases (1) is two, the two mounting bases (1) can rotate relatively, and if the two mounting bases (1) rotate relatively, an included angle between the first plane portions (11) of the two mounting bases (1) changes;

and the elastic piece (2) is used for forcing the included angle between the first planes of the two mounting seats (1) to be kept at the initial angle, and the thickness reducing hole (21) is formed in the elastic piece (2).

2. A manual reentrant sander according to claim 1, wherein said initial angle is 91 ° to 100 °.

3. A hand operated reentrant sander according to claim 1 or 2, wherein a triangular region is formed between the two mounting bases (1) and the resilient member (2) is disposed in the triangular region.

4. A hand operated reentrant corner sander according to claim 1, wherein the thickness reducing holes (21) are at least two, and the resilient member (2) further comprises resilient support arms (23), the resilient support arms (23) being disposed between adjacent thickness reducing holes (21).

5. A hand operated reentrant sander according to claim 1, wherein the reduced thickness bore (21) is circular or oval in cross-section.

6. A hand operated reentrant corner sander according to claim 1 further comprising a support frame (3), the resilient member (2) being fixedly attached to the support frame (3), the at least one mounting seat (1) being fixedly attached to the resilient member (2).

7. A hand operated reentrant sander according to claim 6, wherein the mounting block (1) comprises a second planar portion (12) and the resilient member (2) comprises a third planar portion (22), the second planar portion (12) resting on the third planar portion (22).

8. A manual reentrant sander according to claim 6 or 7, wherein the support frame (3) is provided with a handle (5).

9. A manual reentrant sander according to claim 8, wherein the handle (5) is mounted to the support frame (3) via a joint bearing (4).

10. A manual reentrant grinder as claimed in claim 8, wherein said handle (5) is adjustable in length, the handle (5) comprising a rod (51) and a tube (52), the rod (51) being slidably disposed within the tube (52), the rod (51) being extendable outside the tube (52) or retractable within the tube (52) if the rod (51) slides within the tube (52).