CN105150092B - Suitable for the base plate of sander - Google Patents

Abstract

The invention discloses a bottom plate suitable for a sanding machine, comprising: a main body, an accessory and a lock button, the accessory is arranged at the front edge of the main body through insertion, and the lock button and the main body form a rotational connection; the main body is at least provided with: The slot structure for inserting, the rotating shaft structure for the lock button and the main body to form a rotational connection, the accessories are at least provided with: a mortise structure and a limit structure that cooperate with the slot structure to realize insertion; the lock button is at least provided with: can be locked in the lock When the knob is rotated to the first position, it acts on the limiting structure to lock the accessory on the front edge of the main body, and when the lock knob is rotated to the second position, the accessory can be separated from the locking structure of the main body. The advantage of the present invention is that it is convenient and quick to install and disassemble the accessories by simply operating the lock button without using other tools; time-consuming problem.

Description

Base plates for sanders

technical field

The invention relates to a bottom plate, in particular to a bottom plate suitable for a sander.

Background technique

For some sander base plates, attachments of different shapes can be installed, such as fingers, diamonds, triangles, etc., for different sanding conditions. This provides convenience for users to expand functions.

However, the existing accessories and the bottom plate are usually connected by screws, and additional tools are required for disassembly and installation, which is inconvenient to operate, time-consuming and labor-intensive, and reduces the user experience of extended functions.

Contents of the invention

In order to solve the deficiencies of the prior art, the object of the present invention is to provide a base plate of a sander that can install and disassemble accessories conveniently and quickly with simple actions without using tools.

In order to achieve the above object, the present invention adopts the following technical solutions:

A bottom plate suitable for sanding machines, comprising: a main body and accessories, the accessories are arranged at the front edge of the main body through insertion, and the bottom plate suitable for sanding machines also includes: a lock button, which forms a rotational connection with the main body; the main body At least be provided with: a slot structure for the insertion of accessories, a shaft structure for forming a rotational connection between the lock button and the main body, and the accessories shall be at least provided with: a ferrule structure and a limit structure that cooperate with the slot structure to realize insertion; the lock button has at least It is provided with: when the lock button is rotated to the first position, it can act on the limiting structure to lock the accessory at the front edge of the main body, and when the lock button is rotated to the second position, the accessory can be separated from the locking structure of the main body.

Further, a notch groove is provided at the edge of the bottom surface of the main body, and the slot structure is arranged in the notch groove, and the main body is provided with a receiving groove capable of accommodating part of the lock button on its top surface, and a front end of the receiving groove is provided with a The lock hole for the lock structure to pass through. The bottom end of the lock hole is located in the notch groove. The rotating shaft structure is formed on the groove wall of the receiving groove. , the locking structure protrudes from the bottom of the keyhole.

Further, the socket structure includes at least two insertion guide rails arranged symmetrically and parallel in the notch groove; the ferrule structure at least includes: installation ferrules respectively matched with the insertion guide rails.

Further, the insertion guide rail has at least a part of an "L" shape in a section perpendicular to the accessory insertion direction; The opposite part of the "L" shape set.

Further, the locking structure includes a lock block provided on the lock button that can pass through the lock hole, the lock block has at least one locking plane, and the locking plane is parallel to the rotation axis of the lock button; When the lock button is in the first position, the block forms a matching limiting plane, and the limiting plane is perpendicular to the insertion direction of the accessory.

Further, the installation ferrule includes: a left ferrule body and a right ferrule body, their rear ends are connected as a whole, and their front ends form an inner stopper connecting them, and the inner stopper forms a limiting plane.

Further, the accessory also includes: a separate outer stopper set on the front side of the inner stopper; the lock block has two parallel locking planes, and the limit structure is provided with two limit planes corresponding to them respectively, and the inner stopper The block and the outer stopper are respectively provided with limiting planes on their opposite sides.

Further, a limiting groove is provided on the limiting plane of the outer block, and the locking block is provided with a limiting protrusion that cooperates with the limiting groove when the lock button is in the first position.

Further, the bottom plate suitable for a sander further includes a biasing element for biasing the lock button to keep it in the first position.

Further, the accessory also includes: buckles arranged symmetrically, and the main body is provided with a slot for matching with the buckles.

The advantage of the present invention is that it is convenient and fast to install and disassemble the accessories by simply operating the lock button without using other tools; time-consuming problem.

Description of drawings

Fig. 1 is a schematic view of the structure of a preferred embodiment of the base plate of the present invention applicable to a sander in an accessory insertion state;

Fig. 2 is a schematic structural view of the embodiment shown in Fig. 1 when the accessory is pulled out;

Fig. 3 is a schematic diagram of the explosion mechanism of the main body, the lock button and the biasing element in the embodiment shown in Fig. 1;

Fig. 4 is a schematic structural view of the gap groove in the embodiment of Fig. 1;

Fig. 5 is a schematic cross-sectional structural view of the main body in the embodiment shown in Fig. 1;

Fig. 6 is a schematic cross-sectional structure diagram of another angle of the main body in the embodiment shown in Fig. 1;

Fig. 7 is a schematic diagram of the three-dimensional structure of the accessory in the embodiment shown in Fig. 1;

Fig. 8 is a three-dimensional structural schematic view of another angle of the accessory in the embodiment shown in Fig. 1;

Fig. 9 is a structural schematic diagram of another scheme in which the lock button and the main body form a rotational connection in the present invention.

detailed description

The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

Referring to FIGS. 1 to 8 , the bottom plate 100 suitable for a sander of the present invention includes: a main body 10 , an accessory 20 , and a lock button 30 .

Wherein, the main body 10 is used to constitute the main component of the bottom plate 100, which is responsible for installing or fixing most of the sandpaper (not marked in the figure) used for sanding.

The attachment 20 is detachably installed at the front edge of the main body 10, and the attachment 20 can be installed in a horizontal inserting manner. Sanding effect. Different attachments 20 can hold or hold different shapes of sandpaper. It should be noted here that the horizontal direction referred to here refers to the sandpaper plane 101 parallel to the main body 10 .

The lock button 30 can lock or unlock the accessory 20 so that it can be integrated with the main body 10 or separated from the main body 10 . The function of the lock button 30 is realized by its own movement, and the user can realize the quick release or installation of the accessory 20 by operating it. Specifically, the lock button 30 forms a rotational connection with the main body 10 , and the rotational axis of the rotational connection is perpendicular to the insertion direction A of the accessory 20 .

In order to realize the insertion and locking of the accessory 20, the main body 10 is at least provided with: a slot structure (not marked in the figure) for the horizontal insertion of the accessory 20, and a rotating shaft structure (not marked in the figure) for the lock button 30 to form a rotational connection with the main body 10. logo), the attachment 20 is at least provided with: a ferrule structure (not marked in the figure) and a limit structure (not marked in the figure) that cooperate with the slot structure to realize insertion; the lock button 30 is at least provided with: the lock button 30 can When the lock button 30 is rotated to the second position, the accessory 20 can be disengaged from the locking structure of the main body 10 (not marked). The first position is when the lock button 30 is rotated to the position where the locking structure can cooperate with the limit structure and lock the accessory 20. When the lock button 30 rotates to a certain critical angle, the locking structure is in a critical state. Once the angle is turned, The locking structure will no longer interfere with the limit structure, that is, it cannot affect the degree of freedom of the accessory 20 in the insertion direction A, and the second position can be considered to be in (when the accessory 20 is pulled out so that the lock button 30 can continue to rotate, so It is believed that this position can also be unlocked) or any position of the lock button 30 after turning the critical angle. The determination of the second position depends on the critical angle, and the critical angle depends on the locking structure and the limit structure size, configuration Factors such as relationship and relationship can be designed and implemented by those skilled in the art according to the specific application environment without creative work.

As a specific preferred solution, the edge of the bottom surface of the main body 10 is provided with a notch groove 11, the slot structure is arranged in the notch groove 11, and the main body 10 is provided with a receiving groove 12 capable of accommodating part of the lock button 30 on its top surface, A lock hole 13 for the locking structure to pass is provided at the front end of the receiving groove 12. The bottom end of the lock hole 13 is located in the notch groove 11, and the rotating shaft structure is formed on the groove wall of the receiving groove 12, and the lock button 30 rotates through the rotating shaft structure. The locking structure is arranged at the receiving groove 12 , and when the locking button 30 is rotated to the first position, the locking structure protrudes from the bottom of the locking hole 13 .

Specifically, the rotating shaft structure is the shaft groove 14 arranged on the groove wall of the receiving groove 12. In order to realize the rotation connection, the two sides of the lock button 30 are provided with a cooperating shaft post (not marked in the figure), and the shaft post is embedded in the When in the shaft groove 14 , the lock button 30 forms a rotational connection with the main body 10 . Certainly, other solutions such as the main body 10 forming the shaft column and the lock button 30 forming the shaft groove 14 to form a rotational connection may also be adopted.

The setting of the notch groove 11 is to enable the attachment 20 to be plugged and connected in the main body 10 in an embedded manner, so that the sandpaper surface (not shown in the figure) of the attachment 20 and the sandpaper plane 101 of the main body 10 can form a The overall sanding plane, according to different objects that need to be sanded, the attachment 20 can be designed in different shapes according to requirements, for example, the sandpaper surface of the attachment 20 can also be a curved surface.

The function of the accommodating groove 12 is to accommodate part of the lock button 30 so that it forms a rotational connection with the main body 10. The function of the lock hole 13 is to enable the locking structure to protrude to a position in contact with the accessory 20. As a specific preferred solution, the locking structure includes A lock block 31 is formed by a part of the lock button 30 .

As a preferred solution, the bottom plate 100 further includes a biasing element (not marked in the figure) for biasing the lock button 30 to keep it at the first position. More specifically, the biasing element is a helical spring 40 , which and the lock block 31 are respectively located on two sides of the rotation axis of the lock button 30 .

As a preferred solution, the socket structure includes at least two inserting guide rails 15 arranged symmetrically and parallel in the notch groove 11 ;

The insertion guide rail 15 is two independent guide ribs integrally processed by the main body 10. In order to realize the limitation of two dimensions perpendicular to the insertion direction A of the accessory 20 to form a one-way sliding groove structure, the insertion guide rail 15 must be at least It has a part in the shape of "L" in the section perpendicular to the insertion direction A of the accessory 20 . In order to cooperate with the inserting guide rail 15 , the mounting ferrule 23 has at least a part of an “L” shape opposite to the inserting guide rail 15 in the section perpendicular to the inserting direction A of the accessory 20 . In this way, when they cooperate to realize insertion, except for the insertion direction A (that is, the direction perpendicular to the "L"-shaped section), the other two dimensions are limited due to contact.

As far as the essence of this design is concerned, when the insertion structure and the ferrule structure are mated, they should form contact limits at least in the other two directions perpendicular to the insertion direction A of the accessory 20 .

When the main body 10 and the accessory 20 are integrated, the locking accessory 20 can slide in the insertion direction A, so the locking block 31 has at least one locking plane 311 , and the locking plane 311 is parallel to the rotation axis of the locking button 30 ; The limiting structure includes at least one limiting plane 241 that can cooperate with the locking block 31 when the locking button 30 is in the first position, and the limiting plane 241 is perpendicular to the insertion direction A of the accessory 20 . In this way, the locking plane 311 can always turn to make it perpendicular to the insertion direction A of the accessory 20 when it rotates around the rotating shaft of the locking button 30. At this time, it cooperates with the limiting plane 241 (that is, when the accessory 20 is in the first position) ) can realize that the accessory 20 cannot be pulled out along the insertion direction A.

Furthermore, in order to prevent the accessory 20 from being pulled out along the insertion direction A in the locked state, it is also desired to prevent it from being further inserted so as to ensure the installation position. The other side achieves a contact fit. As a specific solution, the accessory 20 also includes: an inner stopper 24, an outer stopper 25 separately arranged on the front side of the inner stopper 24; the lock block 31 has two parallel locking planes 311, 312, and the limit structure is set There are two limiting planes 241 , 251 corresponding to them respectively. The inner stopper 24 and the outer stopper 25 are respectively provided with limiting planes 241 , 251 on their opposite sides. Of course, the arrangement of the inner stopper 24 and the outer stopper 25 should not hinder the insertion and extraction of the accessory 20, and they should be formed with corresponding avoidance structures (not marked in the figure).

As a preferred solution, the mounting ferrule 23 includes: a left ferrule body 231 and a right ferrule body 232, their rear ends are connected as a whole, and their front ends are formed with an inner stopper 24 connecting them, and the inner stopper 24 forms a limited Bitplane 241. The left ferrule body 231 and the right ferrule body 232 are separated from each other except the front end and the rear end, and the shape in the section perpendicular to the insertion direction A of the accessory 20 is an "L" shape opposite to the insertion guide rail 15 .

Preferably, a limiting groove 251a is provided at the limiting plane 251 of the outer block 25, and the lock block 31 is provided with a limiting protrusion 312a that cooperates with the limiting groove 251a when the lock button 30 is in the first position. . In this way, the lock button 30 can be locked better.

In addition, as a preferred solution, the accessory 20 further includes: buckles 22 arranged symmetrically, and the main body 10 is provided with a slot 16 matched with the buckles 22 . This enhances the connection strength between the main body 10 and the attachment 20 .

It should be noted that the rotating shaft forming the rotational connection between the lock button 30 and the main body 10 is not limited to the solutions in the embodiments shown in Figures 1 to 8, as shown in Figure 9, in this embodiment, the accessories 20' and The main body 10' can be inserted along the insertion direction A through a structure similar to that shown in Figures 1 to 8, and the lock button 30' forms a rotational connection with the main body 10', although its rotation axis B' is still perpendicular to the insertion direction. Direction A', but it is not parallel to the board surface of the main body 10' but perpendicular to the board surface of the main body 10' as shown in Fig. 1 to Fig. 'Accommodating groove 12' for accommodating lock button 30' and lock hole 13' for inserting lock block 31' between inner stopper 24' and outer stopper 25' of accessory 20' are formed. The lock block 31' can be unlocked and locked when the lock button 30' rotates with the rotating shaft B'.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the above-mentioned embodiments do not limit the present invention in any form, and all technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims (10)

1. A base plate suitable for a sanding machine, comprising: a main body and an accessory, the annex being arranged at the front edge of the main body through plug-in, characterized in that, the base plate suitable for a sanding machine also includes: A lock button, the lock button and the main body form a rotational connection; the main body is at least provided with: a slot structure for the attachment of the accessory, and a rotating shaft structure for the lock button and the main body to form a rotational connection. The above-mentioned accessories are at least provided with: a ferrule structure and a limit structure that cooperate with the slot structure to realize insertion; the lock button is at least provided with: it can act on the limit when the lock button is rotated to the first position The position structure locks the accessory at the front edge of the main body and enables the accessory to disengage from the locking structure of the main body when the locking knob is rotated to the second position. 2. The bottom plate suitable for sanding machines according to claim 1, wherein a notch groove is provided at the edge of the bottom surface of the main body, the slot structure is arranged in the notch groove, and the main body is Its top surface is provided with a receiving groove capable of accommodating part of the locking button, and a locking hole is provided at the front end of the receiving groove for the locking structure to pass through, and the bottom end of the locking hole is located in the notch groove. The rotating shaft structure is formed at the groove wall of the accommodating groove, and the lock button is arranged at the accommodating groove through the rotation of the rotating shaft structure. When the locking button is rotated to the first position, the locking structure extends out the bottom of the keyhole. 3. The bottom plate suitable for sanding machines according to claim 2, characterized in that, the slot structure at least includes two symmetrical and parallel insertion guide rails arranged in the notch groove; the ferrule structure It at least includes: mounting ferrules respectively matched with the insertion guide rails. 4. The bottom plate suitable for sanding machines according to claim 3, wherein the insertion guide rail has at least a part in the shape of an "L" in a section perpendicular to the insertion direction of the accessory; The mounting ferrule has at least a part of an "L" shape opposite to the insertion guide rail in a cross section perpendicular to the insertion direction of the accessory. 5. The bottom plate suitable for sanding machines according to claim 2, wherein the locking structure includes a locking block provided on the locking button that can pass through the locking hole, and the locking block has at least one A locking plane, the locking plane is parallel to the rotation axis of the lock button; the limiting structure includes at least one limiting plane that can cooperate with the locking block when the locking button is in the first position, the The limiting plane is perpendicular to the insertion direction of the accessory. 6. The bottom plate suitable for sanding machines according to claim 5, characterized in that, the slot structure at least includes two symmetrical and parallel insertion guide rails arranged in the notch groove; the ferrule structure It at least includes: an installation ferrule that can be respectively matched with the insertion guide rail; the installation ferrule includes: a left ferrule body and a right ferrule body, their rear ends are connected as a whole, and their front ends are formed to connect them The inner stopper is formed with the limiting plane. 7. The bottom plate suitable for sanding machines according to claim 6, wherein the attachment further comprises: an outer stopper separately arranged on the front side of the inner stopper; the locking block has two Parallel to the locking planes, the position-limiting structure is provided with two position-limiting planes corresponding to them, and the inner block and the outer block are respectively provided with the position-limiting planes on their opposite sides. 8. The bottom plate suitable for sanding machines according to claim 7, characterized in that, a limiting groove is provided at the limiting plane of the outer stopper, and a limiting groove is provided on the locking block. When the button is in the first position, the limiting protrusion is matched with the limiting groove. 9. The bottom plate suitable for a sanding machine according to any one of claims 1 to 8, characterized in that, the bottom plate suitable for a sanding machine further comprises a biasing lock button to keep it in the first position. position of the biasing element. 10. The bottom plate suitable for sanding machines according to any one of claims 1 to 8, characterized in that, the accessory also includes: symmetrically arranged buckles, and the main body is provided with card slot.