Stepless speed regulation handheld grinder capable of improving physical shape of grinding head

Abstract

The utility model relates to the technical field of handheld grinders, and discloses a stepless speed regulation handheld grinder capable of improving the physical shape of a grinding head, a connecting cylinder is arranged at one end of the lower end face of a shell, a driving shaft is arranged in the connecting cylinder and the shell, the driving shaft comprises a fixed shaft and a movable shaft, the movable shaft is rotatably connected in the connecting cylinder, the fixed shaft is rotatably connected in the shell, and the fixed shaft is connected in the shell. A limiting strip is arranged on the side face of the fixed shaft, the lower end of the movable shaft is exposed out of the connecting cylinder, a grinding head is arranged below the connecting cylinder, the lower end of the connecting cylinder is in threaded connection with a grinding cavity, and the grinding head is located in the grinding cavity; a driving assembly is arranged in the shell, and a first grip is arranged on the portion, exposed out of the upper end face of the shell, of the driving assembly. Wave-shaped first grinding strips are evenly arranged on the lower end face of the grinding head, and second grinding strips are evenly arranged on the side face of the grinding head. The grinder has the advantage that materials can be efficiently and thoroughly ground and crushed.

Description

Technical Field

[0001] The utility model relates to the technical field of handheld grinders, in particular to a handheld grinder with a stepless speed regulation and an improved physical shape of a grinding head. Background Art

[0002] A handheld grinder is a household hand tool used to grind large particles or blocks of seasonings or spices. Compared with larger grinding equipment, a handheld grinder can grind small amounts of seasonings for immediate use in the home kitchen, and is therefore favored by more and more consumers.

[0003] Existing handheld grinders rotate the handle to drive the grinding head to rotate in the grinding chamber to grind the seasoning or spices in the grinding chamber. They have the following disadvantages:

[0004] 1. The grinding head is a simple cylindrical shape. When it rotates in the grinding chamber, it cannot effectively grind the seasonings and spices in the grinding chamber;

[0005] 2. The grinding head can only rotate in the grinding chamber and cannot efficiently grind and crush the seasonings and spices in the grinding chamber. Utility Model Content

[0006] 1. Technical Problems Solved

[0007] The technical problem to be solved by the utility model is that the existing handheld grinders are unable to grind and crush materials efficiently and thoroughly.

[0008] 2. Technical Solution

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions: a handheld grinder with a stepless speed regulation and an improved physical shape of a grinding head, comprising a housing, a grinding chamber and a grinding head.

[0010] A connecting cylinder is provided at one end of the lower end surface of the shell, a driving shaft is provided in the connecting cylinder and the shell, the driving shaft includes a fixed shaft and a movable shaft, the movable shaft is rotatably connected in the connecting cylinder, the fixed shaft is rotatably connected in the shell, the movable shaft is sleeved on the outside of the fixed shaft, a limit bar is provided on the side of the fixed shaft, the movable shaft is slidably connected to the limit bar, the lower end of the movable shaft is exposed to the connecting cylinder, a grinding head is provided below the connecting cylinder, the grinding head is detachably connected to the lower end of the movable shaft, the lower end of the connecting cylinder is threadedly connected to the grinding chamber, and the grinding head is located in the grinding chamber;

[0011] A driving assembly is provided in the housing, and a handle is provided on the portion of the driving assembly exposed from the upper end surface of the housing. Rotating the handle drives the grinding head to rotate and move up and down through the driving assembly.

[0012] The lower end surface of the grinding head is evenly provided with a wave-shaped grinding strip 1, and the side surface of the grinding head is evenly provided with a grinding strip 2.

[0013] Furthermore, the driving assembly includes a connecting shaft and a connecting plate, the upper end surface of the shell is rotatably connected to the connecting shaft, the upper end of the connecting shaft is exposed from the shell and is connected to handle 1, the part of the connecting shaft located in the shell is provided with gear 1, the fixed shaft is provided with gear 2, the gear 2 is engaged with gear 1, the lower end of the connecting shaft is provided with a turntable, a protrusion 1 is provided on one side of the lower end surface of the turntable, a connecting plate is provided under the turntable, the connecting plate is connected to the shell through a guide reset assembly, a protrusion 2 is provided on one side of the upper end surface of the connecting plate, and the movable shaft is rotatably connected to the connecting plate.

[0014] Furthermore, the diameter and number of teeth of gear one are both greater than those of gear two.

[0015] Furthermore, the guide reset assembly includes a guide rod and a spring, the lower end of the guide rod is connected to the lower end surface of the shell, a spring is provided between the connecting plate and the lower end surface of the shell, and the spring is sleeved on the outside of the guide rod.

[0016] Furthermore, a plug-in slot is provided in the center of the upper end surface of the grinding head, a plug-in block is provided at the lower end of the movable shaft, the plug-in block is slidingly connected to the plug-in slot, a connecting bolt is threadedly connected to the side of the plug-in slot, and the connecting bolt is threadedly connected to the plug-in block.

[0017] Furthermore, a second handle is provided on the side of the shell.

[0018] 3. Beneficial Effects

[0019] The advantages of this utility model compared with the prior art are:

[0020] 1. The wavy grinding strips 1 evenly arranged on the lower end surface of the grinding head and the grinding strips 2 on the side of the grinding head enable the grinding head to effectively grind and crush the materials in the grinding chamber when it rotates in the grinding chamber;

[0021] 2. Under the action of the driving assembly, the grinding head rotates in the grinding chamber and reciprocates up and down, thereby efficiently grinding and crushing the material in the grinding chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the present utility model.

[0023] Figure 2 It is a cross-sectional view of the present utility model.

[0024] Figure 3 This is a schematic structural diagram of the drive assembly of the present utility model.

[0025] Figure 4 It is a structural schematic diagram of the grinding head of the utility model.

[0026] Figure markings: 1. Shell, 2. Grinding chamber, 3. Grinding head, 4. Connecting cylinder, 5. Fixed shaft, 6. Movable shaft, 7. Limiting bar, 8. Handle 1, 9. Grinding bar 1, 10. Grinding bar 2, 11. Connecting shaft, 12. Connecting plate, 13. Gear 1, 14. Gear 2, 15. Turntable, 16. Protrusion 1, 17. Protrusion 2, 18. Guide rod, 19. Spring, 20. Handle 2. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] The present invention will now be further described with reference to the accompanying drawings.

[0032] Example 1

[0033] Combined with attachment Figure 1-2 A connecting tube 4 is provided at one end of the lower end surface of the shell 1 , and the lower end of the connecting tube 4 is threadedly connected to the grinding chamber 2 , and the grinding head 3 is located in the grinding chamber 2 .

[0034] When in use, the material to be ground is placed in the grinding chamber 2 , and the grinding chamber 2 is screwed onto the lower end of the connecting cylinder 4 .

[0035] Combined with attachment Figure 1-3 , a driving shaft is provided in the connecting cylinder 4 and the shell 1, and the driving shaft includes a fixed shaft 5 and a movable shaft 6. The movable shaft 6 is rotatably connected in the connecting cylinder 4, and the fixed shaft 5 is rotatably connected in the shell 1. The movable shaft 6 is sleeved on the outside of the fixed shaft 5, and a limit bar 7 is provided on the side of the fixed shaft 5. The movable shaft 6 is slidably connected to the limit bar 7. The driving assembly includes a connecting shaft 11 and a connecting plate 12. The upper end surface of the shell 1 is rotatably connected to the connecting shaft 11, and the upper end of the connecting shaft 11 is exposed from the shell 1 and is connected to the handle 8. A gear 13 is provided on the part of the connecting shaft 11 located in the shell 1, and a gear is provided on the fixed shaft 5. Wheel two 14, the gear two 14 is engaged with gear one 13, the lower end of the connecting shaft 11 is provided with a turntable 15, and a protrusion 16 is provided on one side of the lower end surface of the turntable 15. A connecting plate 12 is provided below the turntable 15, and the connecting plate 12 is connected to the shell 1 through a guide reset assembly. A protrusion two 17 is provided on one side of the upper end surface of the connecting plate 12. The movable shaft 6 is rotatably connected to the connecting plate 12, and the guide reset assembly includes a guide rod 18 and a spring 19. The lower end of the guide rod 18 is connected to the lower end surface of the shell 1, and a spring 19 is provided between the connecting plate 12 and the lower end surface of the shell 1, and the spring 19 is sleeved on the outside of the guide rod 18.

[0036] During use, grip handle 18 is held and rotated, causing grip handle 18 to rotate connecting shaft 11, which in turn drives gear 13, which in turn drives gear 2 14 meshing therewith, which in turn rotates fixed shaft 5 of gear 2 14. Fixed shaft 5, under the action of limit bar 7, drives movable shaft 6 to rotate, which in turn drives grinding head 3 to rotate within grinding chamber 2. During the rotation of connecting shaft 11, connecting shaft 11 drives turntable 15 to rotate, which in turn drives protrusion 1 16 to perform circular motion. When protrusion 16 contacts protrusion 2 17 on connecting plate 12, connecting plate 12 overcomes the tension of spring 19 and moves upward. When protrusion 16 and protrusion 2 17 are no longer in contact, connecting plate 12 moves downward under the tension of spring 19 and the guidance of guide rod 18, driving movable shaft 6 to reciprocate up and down, causing grinding head 3 to move up and down within grinding chamber 2, thereby improving grinding efficiency.

[0037] Combined with attachment Figure 4 The lower end surface of the grinding head 3 is evenly provided with a wave-shaped grinding strip 9, and the side surface of the grinding head 3 is evenly provided with a grinding strip 2 10.

[0038] When the grinding head 3 moves, the wavy grinding strip 1 9 and the wavy grinding strip 2 10 enhance the grinding and crushing effect of the grinding head 3 .

[0039] Example 2

[0040] Combined with attachment Figure 1-4A plug-in slot is provided at the center of the upper end face of the grinding head 3, and a plug-in block is provided at the lower end of the movable shaft 6. The plug-in block is slidably connected to the plug-in slot, and a connecting bolt is threadedly connected to the side of the plug-in slot, and the connecting bolt is threadedly connected to the plug-in block.

[0041] On the basis of the first embodiment, the connecting bolts are unscrewed and the plug-in block is taken out from the plug-in slot, so that the grinding head 3 can be disassembled and replaced, thereby ensuring the grinding effect of the grinding head 3.

[0042] The present invention and its embodiments have been described, but such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the present invention and, without departing from the purpose of the present invention, designs structures and embodiments similar to the technical solution without creatively designing them, they shall fall within the scope of protection of the present invention.

Claims

1. A hand-held grinder with a stepless speed regulation and improved physical shape of a grinding head, comprising a housing (1), a grinding chamber (2) and a grinding head (3), characterized in that: A connecting tube (4) is provided at one end of the lower end surface of the shell (1), and a driving shaft is provided in the connecting tube (4) and the shell (1), and the driving shaft comprises a fixed shaft (5) and a movable shaft (6). The movable shaft (6) is rotatably connected in the connecting tube (4), and the fixed shaft (5) is rotatably connected in the shell (1). The movable shaft (6) is sleeved on the outside of the fixed shaft (5), and a limiting strip (7) is provided on the side of the fixed shaft (5). The movable shaft (6) is slidably connected to the limiting strip (7), and the lower end of the movable shaft (6) is exposed from the connecting tube (4). A grinding head (3) is provided below the connecting tube (4), and the grinding head (3) is detachably connected to the lower end of the movable shaft (6). The lower end of the connecting tube (4) is threadedly connected to a grinding chamber (2), and the grinding head (3) is located in the grinding chamber (2); A driving assembly is provided in the housing (1); a handle (8) is provided on the portion of the driving assembly exposed from the upper end surface of the housing (1); the handle (8) is rotated to drive the grinding head (3) to rotate and move up and down through the driving assembly; The lower end surface of the grinding head (3) is evenly provided with a wave-shaped grinding strip one (9), and the side surface of the grinding head (3) is evenly provided with a grinding strip two (10).

2. The steplessly speed-adjustable hand-held grinder with improved grinding head physical shape according to claim 1, characterized in that: The driving assembly comprises a connecting shaft (11) and a connecting plate (12); the upper end surface of the shell (1) is rotatably connected with the connecting shaft (11); the upper end of the connecting shaft (11) is exposed from the shell (1) and is connected to a handle (8); a gear (13) is provided on the portion of the connecting shaft (11) located on the shell (1); a gear (14) is provided on the fixed shaft (5); the gear (14) is meshed with the gear (13); a rotating disk (15) is provided on the lower end of the connecting shaft (11); a protrusion (16) is provided on one side of the lower end surface of the rotating disk (15); a connecting plate (12) is provided below the rotating disk (15); the connecting plate (12) is connected to the shell (1) through a guide reset assembly; a protrusion (17) is provided on one side of the upper end surface of the connecting plate (12); and the movable shaft (6) is rotatably connected to the connecting plate (12).

3. The hand-held grinder with stepless speed regulation and improved physical shape of the grinding head according to claim 2, characterized in that: The diameter and number of teeth of gear one (13) are greater than those of gear two (14).

4. The hand-held grinder with stepless speed regulation and improved physical shape of the grinding head according to claim 2, characterized in that: The guide reset assembly comprises a guide rod (18) and a spring (19); the lower end of the guide rod (18) is connected to the lower end surface of the housing (1); a spring (19) is provided between the connecting plate (12) and the lower end surface of the housing (1); and the spring (19) is sleeved on the outside of the guide rod (18).

5. The hand-held grinder with stepless speed regulation and improved physical shape of the grinding head according to claim 1, characterized in that: A plug-in slot is provided at the center of the upper end surface of the grinding head (3), a plug-in block is provided at the lower end of the movable shaft (6), the plug-in block is slidably connected to the plug-in slot, a connecting bolt is threadedly connected to the side surface of the plug-in slot, and the connecting bolt is threadedly connected to the plug-in block.

6. The hand-held grinder with stepless speed regulation and improved physical shape of the grinding head according to claim 1, characterized in that: A second handle (20) is provided on the side of the housing (1).

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