Bearing dustproof protection device of electric tool

Abstract

The utility model relates to the technical field of electric tools, and discloses a dustproof protection device for a bearing of an electric tool, which comprises a main body assembly, a clamping seat, a protection sleeve arranged at the top of the clamping seat, and a clamping groove formed in the inner wall of the clamping seat; and the clamping assembly is arranged on the inner wall of the protective sleeve and comprises a clamping piece, the clamping piece comprises a moving strip, an extrusion block is arranged at one end of the moving strip, clamping blocks are arranged at the two ends of the extrusion block, the clamping blocks move in the clamping grooves, and a clamping strip is arranged on one side of the moving strip. The utility model has the beneficial effects that when the bearing needs to be overhauled or the protective sleeve needs to be replaced, the protective sleeve can be easily taken down only by loosening the buckle, and the situation that the protective sleeve installed in an interference fit manner needs to use a special dismounting tool and the dismounting process is difficult is avoided, so that the maintenance difficulty and time cost are greatly reduced, and the working efficiency is improved. And in addition, large external force does not need to be applied through professional tools such as a press machine like interference fit, operation is easy, and complex equipment is not needed.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and in particular to a dust protection device for bearings of power tools. Background Technology

[0002] A bearing is a mechanical part used to support rotating shafts or other moving components. A bearing housing is usually installed on the outside of the bearing. Once dust, sand, and other impurities enter the bearing, they will accelerate the wear of the rolling elements and raceways, reducing the bearing's precision and service life. A bearing protective sleeve can effectively prevent dust, sand, and other impurities from entering the bearing, ensuring its normal operation. When installing the housing and protective sleeve, a press or other special tools are usually used to install the protective sleeve into the mounting hole of the bearing housing using an interference fit. This method ensures a tight fit between the protective sleeve and the bearing housing, preventing loosening or displacement of the protective sleeve during equipment operation. Disassembling an interference-fit protective sleeve is relatively difficult and requires specialized disassembly tools. Due to the tight fit between the protective sleeve and the bearing housing, disassembly may damage the protective sleeve, bearing housing, and the bearing itself, affecting their precision and service life. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] In view of the problems existing in the above and / or existing dust protection devices for bearings of power tools, this utility model is proposed.

[0005] Therefore, the problem that this utility model aims to solve is that the bearing base and the protective sleeve cannot be quickly disassembled.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a dust protection device for the bearing of an electric tool, comprising a main body component, including a card holder, wherein a protective sleeve is provided on the top of the card holder, and a card slot is provided on the inner wall of the card holder;

[0007] The engaging assembly is disposed on the inner wall of the protective sleeve and includes an engaging member. The engaging member includes a moving strip, one end of which is provided with a pressing block. Both ends of the pressing block are provided with engaging blocks. The engaging blocks move within the slot. One side of the moving strip is provided with an engaging strip, and a frame is sleeved on the outside of the engaging strip. The other end of the frame is fixed to the top of the protective sleeve.

[0008] As a preferred embodiment of the bearing dust protection device for the power tool described in this utility model, the engaging assembly includes a connector, and the connector includes a pressing post disposed on the top of the moving bar.

[0009] As a preferred embodiment of the bearing dust protection device for the power tool described in this utility model, a fixing frame is sleeved on the outer side of the extrusion column, and two inclined grooves are opened on the inner wall of the fixing frame, and the locking block slides on the inner wall of the inclined groove.

[0010] As a preferred embodiment of the bearing dust protection device for the power tool described in this utility model, wherein: an extrusion plate is provided at the top of the extrusion column, and a support frame is sleeved on the outside of the extrusion plate.

[0011] As a preferred embodiment of the bearing dust protection device for the power tool described in this utility model, a first spring is sleeved on the outer side of the extrusion column, one end of the first spring is fixed to one end of the extrusion disc, and the other end is fixed to the inner wall of the support frame.

[0012] As a preferred embodiment of the bearing dust protection device for the power tool described in this utility model, the engaging assembly further includes a limiting member, which includes a rotating column disposed at one end of the engaging strip.

[0013] As a preferred embodiment of the bearing dust protection device for the power tool described in this utility model, a positioning column is sleeved on the outer side of the rotating column, and the positioning column is fixed to one end of the extrusion plate.

[0014] As a preferred embodiment of the bearing dust protection device for the power tool described in this utility model, a support plate is sleeved on the outer side of the rotating column, and a torsion spring is also sleeved on the outer side of the rotating column. One end of the torsion spring is fixed to one end of the support frame, and the other end is fixed to one end of the support plate.

[0015] As a preferred embodiment of the bearing dust protection device for the power tool described in this utility model, a pressing column is further provided on one side of the support plate. The pressing column is located on the inner wall of the protective sleeve, and a second spring is provided at the bottom of the pressing column. The other end of the second spring is fixed to the inner wall of the card seat.

[0016] As a preferred embodiment of the bearing dust protection device for the power tool described in this utility model, the surface of the pressing column is provided with a slide bar, and the inner wall of the card seat is provided with a slide groove corresponding to the slide bar.

[0017] The advantages of this utility model are as follows: when the bearing needs to be repaired or the protective sleeve replaced, the protective sleeve can be easily removed simply by loosening the buckle. Unlike the protective sleeve installed with an interference fit, which requires special disassembly tools and is difficult to disassemble, this greatly reduces the difficulty and time cost of maintenance. Moreover, it does not require the use of professional tools such as presses to apply large external force as with interference fits. The operation is simple and does not require the use of complex equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 This is an overall structural diagram of the dust protection device for the bearings of power tools.

[0020] Figure 2 This is a structural diagram of the second spring in a dust protection device for the bearings of power tools.

[0021] Figure 3 This is a structural diagram of the extrusion disc for a dust protection device for the bearings of power tools.

[0022] Figure 4 This is a structural diagram of the locking block for a dust protection device on the bearings of power tools.

[0023] Figure 5 This is a structural diagram of the frame for a dust protection device for the bearings of power tools. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0027] Example 1

[0028] Reference Figures 1-5 This is the first embodiment of the present utility model. This embodiment provides a bearing dust protection device for power tools. The bearing dust protection device for power tools includes a main body component 100 and a locking component 200. The two work together to allow for quick disassembly of the bearing base and the protective cover.

[0029] Specifically, the main component 100 includes a card holder 101, a protective cover 102 on the top of the card holder 101, and a card slot 101-1 on the inner wall of the card holder 101.

[0030] The bearing holder 101 is used to fix and support the bearing, so that the bearing can be accurately installed in the corresponding position of the power tool. The protective sleeve 102 prevents dust and debris from entering the bearing, avoids bearing wear and seizing, and extends its service life. At the same time, it can also prevent the grease in the bearing from leaking and maintain good lubrication. During installation, the bearing is placed in the bearing holder 101 and then the protective sleeve 102 is placed on the bearing holder 101 to protect the bearing.

[0031] Specifically, the engaging component 200 is disposed on the inner wall of the protective sleeve 102 and includes an engaging member 201. The engaging member 201 includes a moving strip 201a. One end of the moving strip 201a is provided with a pressing block 201b. Both ends of the pressing block 201b are provided with engaging blocks 201c. The engaging blocks 201c move within the slot 101-1. One side of the moving strip 201a is provided with an engaging strip 201d. A frame 201e is sleeved on the outside of the engaging strip 201d. The other end of the frame 201e is fixed to the top of the protective sleeve 102.

[0032] The inner wall of the card frame 201e is set as a slope, which allows the locking strip 201d to lock into the card frame 201e through the guide of the slope when it returns to its original position.

[0033] When it is necessary to fix the card holder 101 and the protective sleeve 102, the locking strip 201d is moved to separate it from the card frame 201e. Then, by moving the locking strip 201d, the moving strip 201a is moved. The movement of the moving strip 201a causes the pressing block 201b to move. The movement of the moving strip 201a causes the pressing block 201b to separate from the locking block 201c. Then, the locking strip 201d is released. The locking strip 201d returns to its original position, causing the moving strip 201a to return to its original position. The movement of the moving strip 201a causes the pressing block 201b to press the locking block 201c, causing the locking block 201c to move. The movement of the locking block 201c allows it to engage with the card slot 101-1. Through the engagement of the two, the card holder 101 and the protective sleeve 102 can be fixed.

[0034] When it is necessary to fix the card holder 101 to the protective sleeve 102, the locking strip 201d is moved to separate it from the card frame 201e. Then, the locking strip 201d is moved again, causing the moving strip 201a to move. The movement of the moving strip 201a causes the pressing block 201b to move and separate from the locking block 201c. At this point, the locking block 201c will adhere to the moving strip 201a. Then, by... Insert the card holder 101 into the inner wall of the protective sleeve 102, then release the locking strip 201d. The locking strip 201d returns to its original position, causing the moving strip 201a to return to its original position. The moving strip 201a moves, causing the pressing block 201b to press the locking block 201c, causing the locking block 201c to move. The movement of the locking block 201c can engage with the card slot 101-1. The engagement of the two can fix the card holder 101 and the protective sleeve 102.

[0035] Example 2

[0036] Reference Figures 1-5 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0037] Specifically, the engaging assembly 200 includes a connector 202, which includes a compression post 202a disposed on the top of the moving bar 201a.

[0038] By moving the extrusion column 202a, the moving bar 201a can be moved.

[0039] Specifically, a fixing frame 202b is fitted on the outer side of the extrusion column 202a, and two inclined grooves 202b-1 are opened on the inner wall of the fixing frame 202b. The locking block 201c slides on the inner wall of the inclined groove 202b-1.

[0040] The fixed frame 202b supports the extrusion column 202a. The extrusion column 202a moves, which in turn moves the moving strip 201a. The moving strip 201a moves the extrusion block 201b, causing it to separate from the locking block 201c. The locking block 201c then slides along the inner wall of the inclined groove 202b-1, at which point it engages with the moving strip 201a. This will not affect the fixing frame 202b. Then, the fixing frame 202b is placed into the inner wall of the card seat 101 and the protective sleeve 102. The movement of the extrusion column 202a is released. The movement of the moving bar 201a drives the extrusion block 201b to extrude the locking block 201c, so that the locking block 201c moves in the inclined groove 202b-1. Through the movement of the locking block 201c, it can engage with the card groove 101-1. Through the engagement of the two, the card seat 101 and the protective sleeve 102 can be fixed.

[0041] Specifically, an extrusion plate 202c is provided on the top of the extrusion column 202a, and a support frame 202d is sleeved on the outside of the extrusion plate 202c.

[0042] The bottom of the support frame 202d is provided with a fixed frame 202b, which is used to support the extrusion plate 202c. By moving the extrusion plate 202c, the extrusion column 202a is moved.

[0043] Specifically, a first spring 202e is sleeved on the outside of the extrusion column 202a. One end of the first spring 202e is fixed to one end of the extrusion disc 202c, and the other end is fixed to the inner wall of the support frame 202d.

[0044] By moving the extrusion disc 202c, the extrusion disc 202c compresses the first spring 202e. The movement of the extrusion disc 202c can drive the extrusion column 202a to move. When the extrusion column 202a needs to return to its original position, the extrusion of the extrusion disc 202c is released. At this time, the force of the rebound of the first spring 202e can make it return to its original position.

[0045] Specifically, the engaging assembly 200 also includes a limiting member 203, which includes a rotating post 203a disposed at one end of the engaging strip 201d.

[0046] By rotating the rotating column 203a, the rotating column 203a drives the locking strip 201d to rotate.

[0047] When it is necessary to fix the card holder 101 to the protective sleeve 102, the rotating column 203a is rotated. The rotation of the rotating column 203a causes the engaging strip 201d to separate from the card frame 201e. Then, by moving the rotating column 203a, the pressing plate 202c can be moved. The moving pressing plate 202c compresses the first spring 202e. The movement of the pressing plate 202c can then drive the pressing column 202a to move. The movement of the pressing column 202a can then drive the moving strip 201a to move. The movement of the moving strip 201a can then drive the pressing block 201b to move, and the movement of the moving strip 201a can then drive the pressing block 201b to move and engage. When block 201c separates, the locking block 201c moves and slides on the inner wall of the inclined groove 202b-1. At this time, the locking block 201c will fit with the moving strip 201a, and the locking block 201c will not affect the fixed frame 202b. Then, the fixed frame 202b is placed into the inner wall of the card seat 101 and the protective sleeve 102. The movement of the extrusion column 202a is released, and the moving strip 201a moves to drive the extrusion block 201b to extrude the locking block 201c, so that the locking block 201c moves in the inclined groove 202b-1. Through the movement of the locking block 201c, it can engage with the card slot 101-1. Through the engagement of the two, the card seat 101 and the protective sleeve 102 can be fixed.

[0048] When the extrusion column 202a needs to return to its original position, the extrusion of the extrusion disc 202c is released, and the force of the rebound of the first spring 202e allows it to return to its original position.

[0049] Example 3

[0050] Reference Figures 4-5 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0051] Specifically, a positioning post 203b is sleeved on the outer side of the rotating post 203a, and the positioning post 203b is fixed to one end of the extrusion plate 202c.

[0052] The positioning column 203b is used to support the rotating column 203a. The rotating column 203a and the positioning column 203b are rotatably connected. By moving the rotating column 203a, it can rotate on the inner wall of the positioning column 203b. Then, by pressing the rotating column 203a, the rotating column 203a can press the positioning column 203b. The movement of the positioning column 203b drives the pressing disc 202c to move.

[0053] Specifically, a support plate 203c is sleeved on the outside of the rotating column 203a, and a torsion spring 203d is also sleeved on the outside of the rotating column 203a. One end of the torsion spring 203d is fixed to one end of the support frame 202d, and the other end is fixed to one end of the support plate 203c.

[0054] By rotating the rotating column 203a, the rotating column 203a drives the support plate 203c to rotate. The rotation of the support plate 203c applies pressure to the torsion spring 203d. The rotation of the rotating column 203a can cause the locking strip 201d to separate from the locking frame 201e. When it is necessary to return the locking strip 201d to its original position, the rotating column 203a is released. At this time, the rebound force of the torsion spring 203d can cause the locking strip 201d to re-engage with the locking frame 201e.

[0055] Specifically, a pressing post 203e is provided on one side of the support plate 203c. The pressing post 203e is located on the inner wall of the protective sleeve 102. A second spring 203f is provided at the bottom of the pressing post 203e. The other end of the second spring 203f is fixed to the inner wall of the card seat 101.

[0056] By fixing the card holder 101 to the protective sleeve 102, the protective sleeve 102 is placed on the card holder 101. The movement of the protective sleeve 102 causes the pressing column 203e to move, and the movement of the pressing column 203e applies pressure to the second spring 203f.

[0057] Specifically, a slide bar 203g is provided on the surface of the pressing column 203e, and a groove 101-2 corresponding to the slide bar 203g is provided on the inner wall of the card holder 101.

[0058] The pressing column 203e moves, causing the slide bar 203g to move within the inner wall of the slide groove 101-2. The pressing column 203e provides stable support for the card holder 101 and the protective sleeve 102.

[0059] In use, when it is necessary to fix the card holder 101 and the protective sleeve 102, first place the protective sleeve 102 on the card holder 101, and then rotate the rotating column 203a. The rotation of the rotating column 203a drives the support plate 203c to rotate, and the rotation of the support plate 203c applies pressure to the torsion spring 203d. The rotation of the rotating column 203a can drive the locking strip 201d to separate from the card frame 201e. Then, the rotating column 203a is pressed, and the rotating column 203a moves. The positioning post 203b is pressed, and the movement of the positioning post 203b drives the pressing disc 202c to move. The movement of the pressing disc 202c presses the first spring 202e. The movement of the pressing disc 202c drives the pressing post 202a to move, and the movement of the pressing post 202a drives the moving bar 201a to move. The movement of the moving bar 201a drives the pressing block 201b to move, and the movement of the moving bar 201a causes the pressing block 201b to move and separate from the locking block 201c. When the locking block 201c moves, it slides along the inner wall of the inclined groove 202b-1. At this time, the locking block 201c will be in contact with the moving strip 201a. Then, the fixing frame 202b is placed into the inner wall of the card holder 101 and the protective sleeve 102. By releasing the pressure of the rotating column 203a, the rotating column 203a returns to its original position, which will cause the moving strip 201a to return to its original position. The movement of the moving strip 201a drives the pressing block 201b to press the locking block 201c, so that the locking block 201c is in the inclined groove 202b-1. The movement of the locking block 201c allows it to engage with the slot 101-1. At this time, the rebound force of the torsion spring 203d will drive the rotating column 203a back to its original position. The return of the rotating column 203a will cause the locking strip 201d to re-engage with the frame 201e. The movement of the protective sleeve 102 will drive the pressing column 203e to move. The movement of the pressing column 203e will apply pressure to the second spring 203f, thereby completing the fixation of the card holder 101 and the protective sleeve 102.

[0060] When it is necessary to separate the two, the limiting of the locking strip 201d is released, and then the rotating column 203a is moved to separate the locking block 201c from the slot 101-1, and the fixing frame 202b is taken out. Then, by the force of the second spring 203f, the protective sleeve 102 can be ejected and separated from the card seat 101.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A dust protection device for bearings of power tools, characterized in that: include, The main component (100) includes a card holder (101), the top of which is provided with a protective sleeve (102), and the inner wall of the card holder (101) is provided with a card slot (101-1). The engaging assembly (200) is disposed on the inner wall of the protective sleeve (102) and includes an engaging component (201). The engaging component (201) includes a moving strip (201a). One end of the moving strip (201a) is provided with a pressing block (201b). Both ends of the pressing block (201b) are provided with engaging blocks (201c). The engaging blocks (201c) move within the slot (101-1). One side of the moving strip (201a) is provided with an engaging strip (201d). The outer side of the engaging strip (201d) is provided with a frame (201e). The other end of the frame (201e) is fixed to the top of the protective sleeve (102).

2. The bearing dust protection device for power tools as described in claim 1, characterized in that: The engaging assembly (200) includes a connector (202) which includes a compression post (202a) disposed on the top of the moving bar (201a).

3. The bearing dust protection device for power tools as described in claim 2, characterized in that: A fixing frame (202b) is fitted on the outside of the extrusion column (202a). Two inclined grooves (202b-1) are opened on the inner wall of the fixing frame (202b). The locking block (201c) slides on the inner wall of the inclined groove (202b-1).

4. The bearing dust protection device for power tools as described in claim 3, characterized in that: The top of the extrusion column (202a) is provided with an extrusion disc (202c), and a support frame (202d) is sleeved on the outside of the extrusion disc (202c).

5. The bearing dust protection device for power tools as described in claim 4, characterized in that: A first spring (202e) is sleeved on the outside of the extrusion column (202a). One end of the first spring (202e) is fixed to one end of the extrusion disc (202c), and the other end is fixed to the inner wall of the support frame (202d).

6. The bearing dust protection device for power tools as described in claim 5, characterized in that: The engaging assembly (200) further includes a limiting member (203), which includes a rotating post (203a) disposed at one end of the engaging strip (201d).

7. The bearing dust protection device for power tools as described in claim 6, characterized in that: A positioning post (203b) is sleeved on the outside of the rotating post (203a), and the positioning post (203b) is fixed to one end of the extrusion plate (202c).

8. The bearing dust protection device for power tools as described in claim 7, characterized in that: A support plate (203c) is sleeved on the outside of the rotating column (203a), and a torsion spring (203d) is also sleeved on the outside of the rotating column (203a). One end of the torsion spring (203d) is fixed to one end of the support frame (202d), and the other end is fixed to one end of the support plate (203c).

9. The bearing dust protection device for power tools as described in claim 8, characterized in that: A pressing post (203e) is also provided on one side of the support plate (203c). The pressing post (203e) is located on the inner wall of the protective sleeve (102). A second spring (203f) is provided at the bottom of the pressing post (203e). The other end of the second spring (203f) is fixed to the inner wall of the card seat (101).

10. The bearing dust protection device for power tools as described in claim 9, characterized in that: The surface of the pressing column (203e) is provided with a slide bar (203g), and the inner wall of the card holder (101) is provided with a slide groove (101-2) corresponding to the slide bar (203g).

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