TWI224535B - Grinding machine allowing easy replacement of grinding sheet - Google Patents

Abstract

This invention relates to a grinding machine that allows easy replacement of a grinding sheet, including: a body in which a driving device is provided for driving rotation of a rotary shaft, the rotary shaft having a periphery around which a ring of teeth is provided; a support provided on a bottom of the body so as to be driven to rotate, a tray arranged beneath the support, a predetermined number of wedging pieces provided to and sliding along the radial slots in the tray. When the support is rotated, the wedging pieces are caused to displace along the slots. When the wedge pieces approach each other, arcuate teeth formed at inner ends of the wedging pieces engage the ring the teeth formed around the rotary shaft, to prevent the rotary shaft from rotation, so as to allow replacement of the grinding sheet. After the grinding sheet is replaced, the wedging pieces may slide outwards along the slots to disengage from the rotary shaft.

Description

1224535 Five invention descriptions (1) [Technical field to which the invention belongs] The present invention is related to the grinding device in detail, and its rotating shaft of the grinding machine can be fixed without two tools. Regardless of whether it is pneumatic or electric, it is equipped with abrasive discs to grind objects. The light effect at the bottom end of each frame, so when grinding different objects, grinding or throwing the conventional grinder structure, the bottom of the shaft is fixed at the rotor (pneumatic person) or the uncle, ::: set-eccentric shaft. : J (electricity) The center of the top surface of the abrasive sheet is provided with a screw, which accumulates the eyes with the corners, and is driven by the rotating shaft ... b, the bottom of the grinder is juxtaposed; the periphery of the abrasive sheet is provided to provide protection. β cover, which covers the traditional grinder with a flat shape. The wrench must be protected from the cover and the nut must be ground so that the shaft cannot rotate and the wrench cover. However, Γ ", Yu more tightly, due to the blocking of the text to the anti-cricket cover, making ^ ^ ^ ^ ^ ^ ^, therefore, the wrench is not easy to be socketed to: r: f ',,, and method. The position of the nut is not fixed. The second force = the eccentric setting of the rotating shaft system. It is often difficult to connect the nut after multiple operations. If you use it, you must replace the abrasive sheet; It ’s rather inconvenient (such as not finding a tool), it ’s not good—the second one is the inconvenience and limitation. [Inventive Content] x ° The present invention aims to solve the problem of uncovering the defects, and its main purpose is to provide a

1224535 V. Description of the invention (2) Grinding machine, the grinding plate is not [implemented to make and reach the details of the cooperation drawings 1st figure 2nd figure 3rd figure 4th figure 5th figure 6th figure combined three-dimensional bureau seventh Graphics. Eighth figure Ninth figure Tenth figure Eleventh perspective view. The twelfth and thirteenth combination drawings show that the fourteenth grinder must use any method.] The effectiveness of your review committee is explained in detail in the present invention. The first diagram is the first diagram. The first diagram is the first diagram. The sectional view of the present invention is the sixth drawing, which is the same as the first display. The present drawing is the present drawing. The present drawing is the same as the indicating member. The tenth worker in the drawing is provided with a place where the rotating shaft can be fixed. The surname ^ ^, the structure, when the replacement is made, the members can further understand the purpose and characteristics of the present invention. Here are some preferred embodiments of the present invention, and later, the arrangement of the drawings is: Perspective view. Exploded perspective view. A longitudinal section view. Bottom view. A partial cross-sectional view of its partial structure. A top view of a tray, a bracket, and a stopper of a preferred embodiment, showing the stopper in an open position. FIG. 7 shows another operating position of the present invention. In the eight-picture state, the catch is in the closed position. Bottom view in the state shown in Figure 9. An exploded view of some components of another preferred embodiment is shown. The sixth figure shows the three-dimensional open position of some components of this embodiment. Top view of the three pictures. I224535

V. Description of the Invention (3) The fifteenth figure is a bottom view of this embodiment. The sixteenth diagram is the same as the fourteenth diagram, and the seventeenth diagram showing the detent is in the closed position. This embodiment is the eighteenth diagram of the present invention. Please refer to the first and second diagrams first. (1 0) One preferred embodiment. Contains the bottom view of the state of the sixteen figures. Bottom view of the preferred embodiment. The grinding machine provided by the present invention

The two bodies (20) 'have a barrel portion (22), which is at least lower than the bottom end, is 囫 shaped, a circular ring portion (24), which is larger in diameter than the barrel portion (22) and is located at the bottom end of the barrel portion. ; The inner circumference of the ring part has three connecting parts (26), which are connected between the tube part (22) and the ring part (24) at an equal interval, and three equally spaced open spaces are formed between the three connecting parts. Department (28). In addition, a graphic mark (30) (32) is provided on the top surface of one of the connecting portions. A space (3-4), please refer to the second figure, and is arranged in the barrel portion (22) of the body for a driving device (35) to be accommodated, among which. Since the one shown in this embodiment is a pneumatic grinder, the driving device (35) is a cylinder (36) and a rotor (3) provided inside the cylinder.

A rotating shaft (40) is pivoted to the bottom of the driving device (3 5) in an eccentric state, and can be driven by the driving shaft (3 8) of the driving device. The eccentric state of the rotating shaft is a known structure, which generates vibration when it rotates. The bottom end of the rotating shaft (40) is provided with a screw hole (42) inward in the axial direction. Among them, the present invention is provided with a ring of teeth (45) on the peripheral surface of the bottom end of the rotating shaft, as shown in the fourth figure. The turntable (50), as shown in the first and second figures, in this embodiment is composed of three arc-shaped bodies (52) having the same diameter (each being 20 ° arc length). The arc-shaped body (5 2) is placed on the outer periphery of the ring (2 4), covering

1224535, description of the invention The top surface of the connecting part (26).

A bracket (60) has a disc-shaped body (62) and three tripods (6 4) arranged around the body at equal intervals. In addition, the center of the body (j 2) is provided with a through hole (6 5), and the body (6 2) is provided with two inclined guide grooves (6 6) at an equal interval. Each of the guides The groove has an inner end (6 6 1) and an outer end (662) in the radial direction of the body (62). The inner end (661) is close to the center of the body and the outer end (6 6 2 ) Is far away from the body ~. The bracket (60) is installed in the ring portion (24), and the tripods (64) are respectively extended through the three hollow portions (2 8), and each is fixed by a screw (6 9) The pivot holes (521) preset in each arc-shaped body (52) are shown in the fifth figure. Since the three arc bodies (5 2) are respectively fixed to the tripod, the arc systems are kept in the shape of the shape, and will not be separated. When the turntable (50) is turned on the ring portion (24), the bracket (60) can be moved. The tripods (64) and guide grooves (6 6) are in a concentric circle with the center of the body (6 2). The center of the body is concentric with the driving shaft (38) of the driving device (35). A tray (70) has a circular hole (72) in the center, and a second holding groove (74) on the top surface. The three holding groove (74) is arranged along the radial direction of the tray (70). And arranged at equal angles.

A hand piece (80) 'is in the shape of a sheet and is respectively arranged in the three rail grooves (74) to slide along the rail grooves; the inner ends of each of the detents (80) are each provided with a plurality of teeth. The arc opening y te (the part (8 2)), the second arc tooth part (8 2) of the Hai just forms a circular configuration. The tooth of each tooth part (82) and the ring tooth of the rotating shaft (40). The tooth stars of the part (45) have the same pitch. The three guide pillars (84) are respectively fixed to the three latches.

Page 7 1224535 V. Description of the invention (5) After the three latches (80) are installed in the tray (70), the tray is fixed to the small protrusion provided on the inner periphery of the ring portion (24) with three screws (86). (241) (as shown in the second and third figures), by which it is fixed in the ring part, and the tray and the stopper are attached to the bottom surface of the body (62) of the bracket (60) exactly; please refer to the sixth figure. Three guide pillars (84) extend into the three guide grooves (6 6). The tray (60) and the bracket (70) are also arranged concentrically. After these components (60) (70) (80) are installed in the ring portion (24), as shown in the third figure, 'the rotating shaft (4㈧ the ring tooth portion (4 5) at the bottom end is penetrated and extended to the bracket And in the round hole (72) of the tray. A shield (90) is made of hard plastic or rubber and has a hollow shape. It is sleeved on the outer periphery of the ring (2 4) to form a protective effect. The state after installation is shown in the first figure, wherein the turntable (50) has at least one window (55) (this embodiment is concave), and the window (55) corresponds to the installation The connection part (26) of the two graphic signs (30) (32) is in the state of the first figure: the window (55) is located at the position (30), and the sign is a pattern of a wrench. At this time, the turntable (50) is in an open position. In this position, please refer to the seventh figure. Each of the guide posts (84) is located at the outer end (662) of the guide groove (66), and the three stoppers The piece (80) is in an open state. In this state, please refer to the four figures. The shaft (40) is not restricted and can be rotated freely. After starting the grinder, the grinding disk (not shown) is driven by the shaft. Show) Grinding the workpiece. To change the abrasive sheet, the operator rotates the turntable (50) clockwise to the closed position as shown in the figure. At this time, the window (55) is another road marking, not marked (32). The pattern of a wrench over the nut is shown so that

Page 8 1224535 V. Description of the invention (6) The operation will restrict the shaft system. (6.) Simultaneous rotation: When the needle angle is displaced, the stent guide column (⑷: guide; = three guide grooves (... will change the angular position, the 39th figure is 1 所 2) moves to the inner end ⑽D, such as Firstly, along the holding groove, the two edge latches (80) are driven by the guide post, that is, they slide to each other and move to the closed position. The three latches I Qiqiu sin. Make their curved teeth (82 ) The circular motion of the heart is converted to the straight line of the stopper; the circle of movement is wide. Therefore, in this state, please refer to the tenth figure, (82 runs on the tooth of the ring connected to the shaft ⑽ (: 巧 = : The teeth cannot be turned. The operator can rotate the center or screw down from the screw hole, so that is two; the connection hole, it must be specifically noted that when the three latches (80) are closed, ^ f ^ The size of the circle formed by the shaped tooth (82) is related to the rotation shaft (the size of the circle formed by the movement㈣). Therefore, the grinding machine stops m. The rotation shaft stops at any angular position, and can be clamped by the three detents ^ When the grinder is to be started, it is only necessary to turn the turntable (50) counterclockwise to the open position, so that the guide post (84) is shifted to the outside of the guide groove, two pieces, and the seventh figure In the open position, the release of the bite rotation shaft can be performed. In addition, the top surface of the tray can be equally spaced near the outer periphery = right one — the position (76), as shown in the ninth figure. Three recesses (68), each with Suitable to go = 10 are arranged at an equal interval on the outer periphery of the body (62). Each positioning; (76) is located in each recess (68) 'Both sides of each recess (68) abut the positioning portion It can also be used as the stopping point when the turntable and the bracket are angularly displaced. 'V. Description of the Invention (7) From the above example, we can only know that the fixed shaft of the shaft or the release of the shaft makeup shovel. It can produce the evils from the mattress and the mattress to produce replacement tools such as abrasion and cutting tools. It is very convenient in operation and cannot find tools. Many inconveniences and restrictions can be avoided. (ΪΪ0) (32) can be used by the operator to judge that the rotating shaft system is in a state of free rotation and fixed, which conforms to the design of human factors. Freedom The eleventh figure is the display stand of the grinder of the present invention. 2 ) And the stopper (95) .: η "Guiguan embodiment, only the three engine parts (:.) Are displayed; = ν, the three guide grooves) are divided into hands While the second guide post (94) is set on the support bracket and connected to the guide slot. As a result, when the bracket (92) is turned, (95) is displaced along the rail slot. 'It is another preferred embodiment of the grinding machine (⑽) of the present invention, in which: the structure of the body (110), the turntable (112), the support (116), and the f-piece (120) is the same as the first implementation Examples are not described. # Compared with the first embodiment, the main differences between this embodiment and the first embodiment are as follows: Adjacent. Two or three latches Ganzhong 'One of the latches (12〇a) is set with an inner arc-arc Tooth = (125), and the inner end (126) of the other two latches (12〇b) 0202) is not provided with a tooth portion, and the two inner ends (126) can be made into a flat shape and a curved surface , Or concave as shown. When the three detents (1 2 0) are restricted, it is possible to drive the rotation. Similarly, please refer to the fourteenth and fifteenth drawings. When it is in the open position, the rotating shaft (118) is not freely rotated by the abrasive disc. When you want to change the abrasive sheet, turn the bracket (11 4) to the position shown in Figure 16.

= Set :: No. = this „12.) Moved along the rail groove u⑺ to the tooth portion 闭合 of the closed shaft (118) 咬 9: The tooth portion (125) of f: (12〇a) bites the bite. 7 The shaft cannot Rotate to change the grinding close to the one. For example, at this time, the shaft moves to the place where the figure is engaged. After the closing, the narrow meshing is closed. (If the shaft ⑴) 8) the position is not reliable, but The crime is close to the imaginary line of the figure 9 of the other two members (120b) or (120c). It is close to the member (120b) during the closing process of 1 cow (120b). (126) will push the turn: the car; the center (C) is the angle Λ along the arc shown in the figure, the position where it is not, the tooth (125) of the stopper (120a). In other words, When the stopper is closed, regardless of the position of the rotating shaft system, it will be fixed by the bite of the stopper (120a). At the same time, the three stoppers close the inner end (126b) of the stopper (120b) (120C) (126 ) Form a relatively space, restricting the rotating shaft, so that the rotating shaft can not be separated from the condition (12〇 & condition. The eighteenth figure is a bottom view of yet another preferred embodiment of the present invention, the difference lies in: The three detents (13〇) The inner end of the second stopper (13〇a) is provided with an f-shaped tooth (135); and the inner end of the other stopper (13〇b) is not provided with a curved tooth, but is a flat, curved Flat or concave. Similarly, when the latch is closed in this embodiment, the rotating shaft cannot be separated from the coupling relationship with the latch (130). In addition, it should be noted that the present invention enables the bracket Exposing the body directly allows the operator to turn the stand directly.

1224535 Brief description of the drawings The first drawing is a perspective view of a preferred embodiment of the present invention. The second figure is an exploded perspective view of the first figure. The third figure is a longitudinal sectional view of the first figure. The fourth picture is a bottom view of the first picture. The fifth figure is a partial cross-sectional view of the partial structure of the first figure. The sixth figure is a partial perspective sectional view of a combination of a tray, a bracket and a stopper according to a preferred embodiment of the present invention. The seventh diagram is a top view of the sixth diagram, showing the state of the detent in the open position. The eighth figure is similar to the seventh figure and shows another operating position of the present invention. The ninth figure is shown in the state of the eighth figure with the detent in the closed position. The tenth figure shows the bottom view of the invention in the state of the ninth figure. The eleventh figure is an exploded perspective view of some components of another preferred embodiment of the present invention. The twelfth figure is an exploded perspective view of still another preferred embodiment of the present invention. The thirteenth figure is similar to the sixth figure, and is a three-dimensional assembled view of some components of this embodiment, showing the state of the latch in the open position. The fourteenth figure is a top view of the thirteenth figure. The fifteenth figure is a bottom view of this embodiment. The sixteenth figure is similar to the fourteenth figure and shows the state where the detent is in the closed position. The seventeenth figure is a bottom view of the embodiment in the state of the sixteenth figure. The eighteenth figure is a bottom view of still another preferred embodiment of the present invention.

Page 121224535 Simple description of drawings Simple illustration of numbers: Grinding machine (10) 000) Tube (2 2) Connection (2 6) Mark (3 0) (3 2) Rotary shaft (40) (118) Turntable ( 50) (112) Window (5 5) Body (62) Guide groove (66) (96) Outer end (6 6 2) Rail groove (74) (117) Curved tooth (82) (1 25) ( 1 35) Inner end (1 2 6) Arc line (d) Body (20) (110) Round ring part (2 4) Hollow part (2 8) Drive device (3 5) Tooth part (4 5) (1 1 9) Arc body (5 2) bracket (60) (92) (1 1 4) foot stand (64) inside end (6 6 1) tray (70) (116) stopper (80) (95) ( 1 20) (1 30) Guide post (84) (94) Center (c)

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Claims (1)

1224535 Six patent application scopes _____ The fasteners are provided with a slanted guide groove; equal to the number of these fasteners are spaced apart from the body of the bracket and are respectively embedded in the $ ^, as appropriate 4. Grinding machine, groove as described in item 丨. · The inner ends of the upper detents are provided with a curved tooth portion, and the detents are closed to each other ', and these form a circular configuration.口 ^ ， These teeth are exactly the same as in the grinding machine described in Item 丨 of the patent application, the inner end of at least one of the upper fasteners is not provided with curved teeth / 哕 · Every time The inner end of the detent which is not provided with a tooth can be moved. The tooth which closes the rotating shaft is engaged by the detent which is provided with an arc tooth. 6) The grinding machine described in item 5 of the scope of patent application, wherein the inner end of each of the detents of each tooth portion is concave. 7. The grinding machine as described in item 1 of the scope of patent application, wherein: a ring portion is provided at the bottom end of the body; the bracket and the tray are located in the ring portion / inside. In addition, a turntable is provided. At the periphery of the ring portion, g can be rotated. Generally, the bracket is connected to the bracket. When the turntable is rotated, the bracket can be angularly displaced. I 8. The grinding machine as described in item 7 of the scope of patent application, wherein: a predetermined number of air-permeable sections are provided around the circumferential section at appropriate intervals; the turntable and the ^ frame are connected through these air-permeable sections. 9. The grinding machine as described in item 8 of the scope of the patent application, wherein: the top surface of the body of the bracket is provided with a certain number of foot stands at appropriate intervals, and the foot stands are respectively extended through the hollow sections and Connected to the turntable. 〃 10 · The grinding machine as described in item 7 of the scope of patent application, wherein: · The circle is provided with two patterns on the peripheral surface; the turntable has at least one window, which is located at the two patterns; the turntable rotates When in different positions, the window can be exposed Page 15 1224535 Sixth, the scope of patent application Each of these patterns. 11. The grinder according to item 7 of the scope of patent application, wherein the turntable is formed by at least two arc-shaped bodies with a predetermined arc length. 1 2. The grinder according to item 1 of the scope of patent application, wherein: the rotating shaft is connected to the driving device in an eccentric manner; when the detents are closed, the circumference formed by the arc-shaped teeth is A tangent circle is formed with the circumference formed by the eccentric rotation movement of the rotating shaft. 1 3. The grinder according to item 1 of the scope of patent application, wherein: the tray is fixedly mounted on the bottom end of the body; the bracket is located above the tray. 14. The grinder according to item 13 of the scope of patent application, wherein: the tray has a top surface provided with at least one positioning portion; the bracket body is provided with at least one recess, and each of the positioning portions is located at each The recess is in the middle. Page 16