Handheld grinding machine

Abstract

The utility model relates to a handheld polisher, which is characterized in that a polishing head and a connecting seat are respectively arranged at two ends of a polishing handle main body, and the handheld polisher further comprises a locking piece, a first handle, a second handle and a third handle, the locking piece is provided with a rotating part and a rod body part located at the lower end of the rotating part, and any one of the first handle, the second handle and the third handle is detachably connected with the polishing head; each of the first handle, the second handle and the third handle comprises a blocking part, a holding part and an inserting part, each inserting part is provided with a first magnetic part and a first through hole, and each first through hole is an internal threaded hole; the polishing head is provided with an insertion groove which is provided with a second magnetic piece. The polishing head is provided with a second through hole allowing the rod body part to penetrate in a matched mode, and the second through hole communicates with the insertion groove. Handles of different sizes can be replaced at any time so as to adapt to users with palms of different sizes, the flexibility in the using process is improved, assembly is convenient and firm, and the stability and reliability of connection between the corresponding handle and the polishing head are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of handheld grinders, in particular to a handheld grinder. Background Art

[0002] A grinding wheel grinder rotates the grinding wheel at high speed, thereby grinding the grinding wheel and the contacted object. This is the working process of the grinding wheel grinder. Grinding wheel grinders are divided into handheld and fixed types. The handheld type is smaller in size and convenient to carry, and can be used in some scenarios with less workload.

[0003] The handheld grinding wheel grinder consists of a handle, a grip on the side of the handle and a grinding wheel under the end of the handle. When working, the person holds the handle with one hand and the grip on the side of the handle with the other hand, so that the grinding wheel is facing downward, thereby allowing the grinding wheel to complete the grinding.

[0004] The grip and handle of existing grinding wheel grinders are integrally connected and cannot be replaced. Furthermore, to ensure a comfortable grip and less fatigue for different user groups (i.e., people of different ages and genders) during grinding, the grips must be tailored to the hand sizes of different users. This results in the need to equip several different models of grinders, which takes up space and increases costs.

[0005] Therefore, in the present utility model patent application, the applicant has carefully studied a handheld grinder to solve the above problems. Utility Model Content

[0006] The present invention aims to overcome the shortcomings of the above-mentioned prior art and its main purpose is to provide a handheld grinder, which can replace handles of different sizes at any time to adapt to users with different hand sizes, improve flexibility during use, and is also easy and firm to assemble, ensuring the stability and reliability of the connection between the corresponding handle and the grinding head.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0008] A handheld grinder comprises a grinding handle body, a grinding head is provided at one end of the grinding handle body, a connection seat for connecting to a power supply is provided at the other end of the grinding handle body, and a grinding disc is provided at the lower end of the grinding head;

[0009] Also included are a locking piece and a first handle, a second handle, and a third handle of different sizes;

[0010] The locking element comprises a rotating portion and a rod portion located at the lower end of the rotating portion, wherein the lower end of the rod portion comprises an external thread portion;

[0011] Any one of the first handle, the second handle, and the third handle is detachably connected to the grinding head; the first handle, the second handle, and the third handle each include a blocking portion, and a handshake portion and an insertion portion respectively located on both sides of the blocking portion. A first magnetic member is provided on the end face of the insertion portion facing the grinding head. The insertion portion is provided with a first through hole penetrating through its upper and lower end faces, and the first through hole is an internal thread hole for fitting an external thread portion.

[0012] An insertion groove for fitting the insertion portion is provided on the side surface of the grinding head, and a second magnetic member for fitting the first magnetic member is provided on the inner side wall of the insertion groove.

[0013] A second through hole for fitting the rod body portion to pass through is provided on the upper end face of the grinding head, and the second through hole communicates with the insertion groove.

[0014] When any one of the first handle, the second handle, and the third handle is connected to the grinding head, the insertion portion is fitted into the insertion groove, the first magnetic member is fitted with the second magnetic member, and the rod body portion of the locking member enters the insertion groove from the second through hole and is connected to the insertion portion, and the external thread portion of the rod body portion is fitted into the internal thread hole.

[0015] As a preferred solution, a driving unit for driving the grinding disc to rotate is provided inside the grinding head, a processor is provided inside the main body of the grinding handle, and a fingerprint scanner is provided on the upper end face of the main body of the grinding handle. The processor is respectively connected to the driving unit and the fingerprint scanner to control the driving unit to drive the grinding disc to act after correctly identifying the fingerprint.

[0016] As a preferred solution, finger recesses for gripping and anti-slip are formed on the lower end face of the connecting seat, and the three finger recesses are provided to match the curvature of the finger surface.

[0017] As a preferred solution, two anti-slip convex portions are symmetrically provided on the outer periphery of the handshake portion.

[0018] As a preferred solution, a cavity is provided at one end of the handshake portion away from the blocking portion.

[0019] Compared with the prior art, the present utility model has obvious advantages and beneficial effects. Specifically, mainly, the grinding head is detachably connected by multiple handles, and different-sized handles can be replaced at any time to adapt to users with different-sized palms, improving the flexibility during use. In particular, through the cooperation of the first magnetic member, the second magnetic member, and the locking member, the assembly is convenient and firm, ensuring the stability and reliability of the connection between the corresponding handle and the grinding head;

[0020] Secondly, corresponding operation data can be retrieved at any time through fingerprint recognition, which is convenient for better use of the grinding machine, and there is no need to re-set the corresponding use parameters every time the user is changed.

[0021] To more clearly elaborate on the structural features and functions of the present invention, the following will provide a detailed description thereof in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0022] Figure 1 is a schematic perspective view of an embodiment of the present utility model;

[0023] Figure 2 is a schematic enlarged sectional view of a part of an embodiment of the present utility model (mainly showing the first magnetic member and the second magnetic member);

[0024] Figure 3 is a control structure block diagram of an embodiment of the present utility model.

[0025] Explanation of the Reference Numerals in the Drawings:

[0026] 11. Grinding handle main body 111. Fingerprint scanner

[0027] 112. Processor 113. Fingerprint processing module

[0028] 12. Grinding head 121. Driving unit

[0029] 122. Insertion groove 123. Second magnetic member

[0030] 124. Second through hole

[0031] 13. Grinding disc

[0032] 14. Connecting seat 141. Finger recess

[0033] 201. First handle 202. Second handle

[0034] 203. Third handle

[0035] 21. Blocking portion 22. Handshaking portion

[0036] 221. Two anti-slip protrusions 222. Inner cavity

[0037] 23. Insertion portion

[0038] 231. First magnetic member 232. First through hole

[0039] 30. Locking member 31. Rotating portion

[0040] 32. Rod body portion 321. External thread portion. Detailed Embodiment

[0041] The following further describes the present utility model in conjunction with the accompanying drawings and specific embodiments.

[0042] As Figures 1 to 3As shown in the figure, a handheld grinding machine includes a grinding handle main body 11, a locking member 30, and first, second, and third handles 201, 202, and 203 with different sizes.

[0043] The locking member 30 has a rotating portion 31 and a rod portion 32 located at the lower end of the rotating portion 31. The lower end of the rod portion 32 has an external thread portion 321.

[0044] Any one of the first handle 201, the second handle 202, and the third handle 203 is detachably connected to the following grinding head 12. The first handle 201, the second handle 202, and the third handle 203 all include a blocking portion 21, and a handgrip portion 22 and an insertion portion 23 located on both sides of the blocking portion 21 respectively.

[0045] In this embodiment, two anti-slip convex portions 221 are symmetrically arranged on the outer periphery of the handgrip portion 22, and an inner cavity 222 is provided at one end of the handgrip portion 22 away from the blocking portion 21.

[0046] The end face of the insertion portion 23 facing the grinding head 12 is provided with a first magnetic member 231. The insertion portion 23 is provided with a first through hole 232 penetrating through its upper and lower end faces. The first through hole 232 is an internal thread hole for adapting to the external thread portion 321.

[0047] A processor 112 is provided inside the grinding handle main body 11. A grinding head 12 is provided at one end of the grinding handle main body 11, and a grinding disc 13 is provided at the lower end of the grinding head 12.

[0048] A driving unit 121 for driving the grinding disc 13 to rotate is provided inside the grinding head 12. A fingerprint scanner 111 is provided on the upper end face of the grinding handle main body 11. The processor 112 is respectively connected to the driving unit 121 and the fingerprint scanner 111 to control the driving unit 121 to drive the grinding disc 13 to act after correctly identifying the fingerprint.

[0049] In this embodiment, the processor 112 has a fingerprint processing module 113, and the fingerprint processing module 113 is electrically connected to the fingerprint scanner 111. When the user needs to use the handheld grinding machine, first power on, and then place the finger on the fingerprint scanner 111. After the fingerprint scanner 111 receives the information, it transmits it to the processor 112. After receiving the information, the processor 112 calls the preset processing information stored in it, and can directly call it without having to change different handles or users each time and re-set the processing parameters.

[0050] An insertion groove 122 for adapting to the insertion portion 23 is provided on the side of the grinding head 12, and a second magnetic member 123 for adapting to the first magnetic member 231 is provided on the inner side wall of the insertion groove 122.

[0051] The upper end surface of the grinding head 12 is provided with a second through hole 124 for fitting the rod body portion 32 to pass through, and the second through hole 124 communicates with the insertion groove 122;

[0052] The other end of the grinding handle main body 11 is provided with a connection seat 14 for connecting a power source. In this embodiment, a finger recess 141 for gripping and anti-slip is formed on the lower end surface of the connection seat 14, and the three finger recesses 141 are set to conform to the curvature of the finger surface.

[0053] When any one of the first handle 201, the second handle 202 and the third handle 203 is connected to the grinding head 12, the insertion portion 23 is adapted to be inserted into the insertion groove 122, the first magnetic member 231 is adapted to the second magnetic member 123, and the rod body portion 32 of the locking member 30 enters the insertion groove 122 from the second through hole 124 and is connected to the insertion portion 23, and the external thread portion 321 of the rod body portion 32 is adapted to the internal thread hole.

[0054] The design key point of the present utility model is that it mainly detachably connects the grinding head through multiple handles, and different-sized handles can be replaced at any time to adapt to users with different-sized palms, improving the flexibility during use. In particular, through the cooperation of the first magnetic member, the second magnetic member and the locking member, the assembly is convenient and firm, ensuring the stability and reliability of the connection between the corresponding handle and the grinding head;

[0055] Secondly, the corresponding operation data can be retrieved at any time through fingerprint recognition, which is convenient for better use of the grinding machine, and there is no need to reset the corresponding use parameters every time the user is changed.

[0056] The above is only a preferred embodiment of the present utility model, and does not impose any limitation on the technical scope of the present utility model. Therefore, any minor modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A handheld grinding machine, comprising a grinding handle body, one end of the grinding handle body is provided with a grinding head, the other end of the grinding handle body is provided with a connection seat for connecting a power supply, and a grinding disc is arranged at the lower end of the grinding head, characterized in that: It further comprises a locking member and first, second and third handles with different sizes; The locking member has a rotating part and a rod part located at the lower end of the rotating part, and an external thread part is arranged at the lower end of the rod part; Any one of the first, second and third handles is detachably connected to the grinding head; the first, second and third handles all include a blocking part, a handshake part and an insertion part respectively located on both sides of the blocking part. A first magnetic member is arranged on the end face of the insertion part facing the grinding head. The insertion part is provided with a first through hole penetrating through its upper and lower end faces, and the first through hole is an internal thread hole for adapting to the external thread part; An insertion groove for adapting to the insertion part is arranged on the side surface of the grinding head, and a second magnetic member for adapting to the first magnetic member is arranged on the inner side wall of the insertion groove; A second through hole for adapting to the rod part to pass through is opened on the upper end face of the grinding head, and the second through hole communicates with the insertion groove; When any one of the first, second and third handles is connected to the grinding head, the insertion part is adapted to be inside the insertion groove, the first magnetic member is adapted to the second magnetic member, the rod part of the locking member enters the insertion groove from the second through hole and is connected to the insertion part, and the external thread part of the rod part is adapted to be inside the internal thread hole.

2. The hand-held grinding machine according to claim 1, wherein: A driving unit for driving the grinding disc to rotate is arranged inside the grinding head, a processor is arranged inside the grinding handle body, a fingerprint scanner is arranged on the upper end face of the grinding handle body, and the processor is respectively connected to the driving unit and the fingerprint scanner to control the driving unit to drive the grinding disc to act after correctly identifying the fingerprint.

3. The hand-held grinding machine according to claim 1, characterized in that: Finger concave positions for gripping and anti-slip are formed on the lower end face of the connection seat, and the three finger concave positions are set to match the radian of the finger surface.

4. The hand-held grinding machine according to claim 1, characterized in that: Two anti-slip convex parts are symmetrically arranged on the outer periphery of the handshake part.

5. The hand-held grinding machine according to claim 1, characterized in that: An inner cavity is opened at one end of the handshake part far away from the blocking part.

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