Shaft fixing device

Abstract

The invention provides a shaft fixing device suitable for fixing a polygonal shaft and a roller fixed on the polygonal shaft. The shaft fixing device comprises a support, an elastic fastener and a first bolt. The support comprises a clamping part used for clamping the polygonal shaft, a fixing part and two extension arms connected between the clamping part and the fixing part. The first bolt is inserted into the elastic fastener and the fixing part so as to fix the elastic fastener to the support. The two extension arms are clamped between the two elastic arms of the elastic fastener, the two elastic arms apply clamping force inwards to the two extension arms respectively, and the clamping part is driven by the two elastic arms to contract inwards so as to limit movement of the polygonal shaft. Another shaft fixing device is also provided.

Description

Technical Field

[0001] The invention relates to a fixing device, in particular to a shaft fixing device. Background Art

[0002] The shaft is an important part that fixes the roller to the fixed part of the conveying equipment, and bears all the loads from the items conveyed on the roller. When too much load is applied to the shaft, it may cause the shaft to wear or even break. Therefore, how to fix the shaft while protecting the shaft from overload and thus preventing shaft damage has always been a concern for relevant industry players. Summary of the invention

[0003] The present invention is directed to a shaft fixing device which can prevent the shaft from being damaged.

[0004] According to one embodiment of the present invention, the shaft fixing device is suitable for fixing a polygonal shaft and a roller fixed to the polygonal shaft. The shaft fixing device includes a bracket, an elastic fastener and a first bolt. The bracket includes a clamping portion, two extension arms and a fixing portion. The two extension arms are separated from each other and are respectively connected to two opposite ends of the clamping portion. The two extension arms are respectively located on opposite sides of the fixing portion and are connected to two opposite ends of the fixing portion. The clamping portion has a polygonal hole, and the fixing portion has a first fixing hole, and two slits are provided between the two extension arms and the fixing portion. The two slits are connected to each other and connected to the polygonal hole. The polygonal shaft is inserted into the polygonal hole and clamped by the clamping portion. The elastic fastener is attached to the two extension arms and the fixing portion. The elastic fastener includes a mounting portion and two elastic arms, wherein the mounting portion has a mounting hole corresponding to the first fixing hole, and the two elastic arms are respectively connected to opposite sides of the mounting portion. The two elastic arms contact the two extension arms respectively, wherein the two extension arms are clamped between the two elastic arms, and the two elastic arms apply clamping forces toward the first fixing hole to the two extension arms respectively. The clamping portion is driven inward by the two extension arms to limit the movement of the polygonal shaft. The first bolt is inserted into the mounting hole and the first fixing hole to fix the elastic fastener to the bracket.

[0005] In the shaft fixing device according to an embodiment of the present invention, the polygonal hole is a hexagonal hole, and the polygonal shaft is a hexagonal shaft.

[0006] In the shaft fixing device according to an embodiment of the present invention, the clamping portion has a notch connected to the hexagonal hole and a groove corresponding to the notch, and the hexagonal hole is connected to the two slits through the groove.

[0007] In the shaft fixing device according to an embodiment of the present invention, one corner of the hexagonal shaft is inserted into the notch, and the other corner of the hexagonal shaft is inserted into the groove.

[0008] In the shaft fixing device according to an embodiment of the present invention, one side surface of the hexagonal shaft covers the notch, and the other side surface of the hexagonal shaft covers the groove.

[0009] In the shaft fixing device according to an embodiment of the present invention, the two extension arms are symmetrically disposed on opposite sides of the fixing portion, and the two slits are symmetrically disposed on opposite sides of the fixing portion.

[0010] In the shaft fixing device according to one embodiment of the present invention, the fixing portion further has two second fixing holes. The two second fixing holes are respectively located on opposite sides of the fixing portion connected to the two extension arms. The first fixing hole is located between the polygonal hole and the two second fixing holes, wherein the shaft fixing device further includes two second bolts, and the two second bolts are respectively inserted into the two second fixing holes.

[0011] According to another embodiment of the present invention, the shaft fixing device is suitable for fixing the polygonal shaft and the roller fixed to the polygonal shaft. The shaft fixing device includes a bracket, an elastic fastener and a first bolt. The bracket includes a clamping portion, an extension arm and a fixing portion, wherein the extension arm is connected to the end of the clamping portion, and the fixing portion is connected to the other end of the clamping portion. The clamping portion has a polygonal hole, and the fixing portion has a first fixing hole. The extension arm is separated from the fixing portion, and a slit is provided between the extension arm and the fixing portion. The slit is connected to the polygonal hole. The polygonal shaft is inserted into the polygonal hole and clamped by the clamping portion. The elastic fastener is attached to the extension arm and the fixing portion. The elastic fastener includes a mounting portion and two elastic arms, wherein the mounting portion has a mounting hole corresponding to the first fixing hole, and the two elastic arms are respectively connected to opposite sides of the mounting portion. The two elastic arms contact the extension arm and the fixing portion respectively, wherein the extension arm and the fixing portion are clamped between the two elastic arms, and the two elastic arms apply a clamping force toward the first fixing hole to the extension arm and the fixing portion respectively. The clamping part is driven by the extension arm and the fixing part to shrink inwards to limit the movement of the polygonal shaft. The first bolt is inserted into the mounting hole and the first fixing hole to fix the elastic fastener to the bracket.

[0012] In a shaft fixing device according to another embodiment of the present invention, the clamping portion has a notch connected to the hexagonal hole and a groove opposite to the notch, and the hexagonal hole is connected to the slit through the groove.

[0013] In a shaft fixing device according to another embodiment of the present invention, one end of the extension arm is connected to the clamping portion, and the other end of the extension arm is separated from the fixing portion, and a gap is formed between the other end of the extension arm and the fixing portion.

[0014] In another embodiment of the shaft fixing device according to the present invention, the fixing portion further has two second fixing holes away from the polygonal hole, and the first fixing hole is located between the polygonal hole and the two second fixing holes. The shaft fixing device also includes two second bolts, and the two second bolts are respectively inserted into the two second fixing holes.

[0015] Based on the above, in the shaft fixing device of the present invention, the bracket and the elastic fastener can generate elastic deformation to absorb or buffer the impact force applied to the polygonal shaft, thereby preventing the polygonal shaft from being damaged.

[0016] In order to make the above contents easier to understand, several embodiments are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1A is a schematic diagram of a shaft fixing device according to an embodiment of the present invention;

[0018] Figure 1B yes Figure 1A An exploded schematic diagram of the shaft fixing device;

[0019] Figure 1C yes Figure 1A A front view schematic diagram of an axle fixing device;

[0020] Figure 2 is a front view schematic diagram of a shaft fixing device according to another embodiment of the present invention;

[0021] Figure 3A is a schematic diagram of a shaft fixing device according to another embodiment of the present invention;

[0022] Figure 3B yes Figure 3A An exploded schematic diagram of the shaft fixing device;

[0023] Figure 3C yes Figure 3A A front view schematic diagram of an axle fixing device;

[0024] Figure 4 1 is a front view schematic diagram of a shaft fixing device according to another embodiment of the present invention. DETAILED DESCRIPTION

[0025] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals are used in the drawings and the description to refer to the same or like parts.

[0026] Figure 1A Schematic diagram of a shaft fixing device according to an embodiment of the present invention. Figure 1B yes Figure 1A Exploded view of the shaft fixture. Figure 1C yes Figure 1ASee the front view of the shaft fixture. Figure 1A In this embodiment, the shaft fixing device 100 is suitable for being fixed to the frame of the conveying equipment, wherein the roller 10 of the conveying equipment is suitable for being fixed to the polygonal shaft 120, and the polygonal shaft 120 is suitable for being fixed to the shaft fixing device 100.

[0027] Please refer to Figures 1A to 1C , the shaft fixing device 100 includes a bracket 110, an elastic fastener 130 and a first bolt 140. The bracket 110 is suitable for being fixed to the frame of the conveying device and clamping the polygonal shaft 120. In addition, the elastic fastener 130 is fixed to the bracket 110 by the first bolt 140 and clamps the bracket 110. In detail, the polygonal shaft 120 is clamped by the bracket 110, and the elastic fastener 130 fixed to the bracket 110 applies two clamping forces F inward to the bracket 110 to limit the movement of the polygonal shaft 120, thereby preventing the polygonal shaft 120 from accidentally detaching from the bracket 110, and improving the operational reliability and stability of the roller 10. In addition, the bracket 110 and the elastic fastener 130 can generate elastic deformation to absorb or buffer the impact force applied to the polygonal shaft 120, thereby preventing the polygonal shaft 120 from being damaged.

[0028] In this embodiment, the bracket 110 includes a clamping portion 111, two extension arms 112 and a fixing portion 113, wherein the two extension arms 112 are connected between the clamping portion 111 and the fixing portion 113, and the two extension arms 112 are separated from each other. In detail, the two extension arms 112 are respectively connected to two opposite ends of the clamping portion 111, and are respectively connected to two opposite ends of the fixing portion 113. The two extension arms 112 are respectively located on opposite sides of the fixing portion 113, and two slits 1121 are provided between the two extension arms 112 and the fixing portion 113. In other words, the two opposite ends of each extension arm 112 are respectively connected to the clamping portion 111 and the fixing portion 113, and each extension arm 112 is separated from the fixing portion 113 by a corresponding slit 1121.

[0029] like Figure 1B and Figure 1C As shown, the two extension arms 112 are symmetrically disposed at two opposite sides of the fixing portion 113 , and the two slits 1121 are also symmetrically disposed at two opposite sides of the fixing portion 113 .

[0030] In this embodiment, the clamping portion 111 has a polygonal hole 1111, and the fixing portion 113 has a first fixing hole 1131. The two slits 1121 are connected to each other and to the polygonal hole 1111. In detail, the polygonal shaft 120 is inserted into the polygonal hole 1111 and clamped by the clamping portion 111. For example, the polygonal hole 1111 may be a hexagonal hole, and the polygonal shaft 120 may be a hexagonal shaft. Since the outer contour of the hexagonal shaft matches the inner contour of the hexagonal hole, the hexagonal shaft cannot rotate in the hexagonal hole.

[0031] In some embodiments, the polygonal shaft 120 may also be a triangular shaft, a rectangular shaft, a pentagonal shaft, a heptagonal shaft or an octagonal shaft, etc., and the present invention is not limited thereto. Since the outer contour of the polygonal shaft 120 matches the inner contour of the polygonal hole 1111, the polygonal hole 1111 may be a triangular hole, a rectangular hole, a pentagonal hole, a heptagonal hole or an octagonal hole, etc., and the present invention is not limited thereto.

[0032] like Figures 1A to 1C As shown, the elastic fastener 130 is attached to the two extension arms 112 and the fixing portion 113. The elastic fastener 130 includes a mounting portion 131 and two elastic arms 132, wherein the mounting portion 131 has a mounting hole 1311 corresponding to the first fixing hole 1131, and the two elastic arms 132 are respectively connected to opposite sides of the mounting portion 131. For example, the elastic fastener 130 can be a U-shaped fastener, and the two elastic arms 132 are symmetrically arranged.

[0033] In detail, the two elastic arms 132 contact the two extension arms 112 respectively, wherein the two extension arms 112 are clamped between the two elastic arms 132, and the two elastic arms 132 apply a clamping force F toward the first fixing hole 1131 to the two extension arms 112. Therefore, the clamping portion 111 is driven by the two extension arms 112 to contract inwardly to clamp the polygonal shaft 120, thereby limiting the movement of the polygonal shaft 120.

[0034] In this embodiment, the first bolt 140 is inserted into the mounting hole 1311 and the first fixing hole 1131 to fix the elastic fastener 130 to the bracket 110 or to fix the mounting portion 131 to the fixing portion 113. In detail, the first bolt 140 is screwed into the first fixing hole 1131 of the fixing portion 113. On the other hand, the fixing portion 113 also has two second fixing holes 1132, and the two second fixing holes 1132 are respectively located on opposite sides of the fixing portion 113 connected to the two extension arms 112. The two second fixing holes 1132 are far away from the polygonal hole 1111, wherein the first fixing hole 1131 is located between the polygonal hole 1111 and the two second fixing holes 1132. In addition, the shaft fixing device 100 also includes two second bolts 150, and the two second bolts 150 are respectively inserted into the two second fixing holes 1132 to fix the bracket 110 to the frame of the conveying device. In detail, the two second bolts 150 are screwed into the frame of the conveying device.

[0035] In some embodiments, the elastic fastener 130 may be made of metal, alloy, rubber or plastic. In order to meet the design requirements of long service life, the elastic fastener 130 may be made of metal or alloy with low hardness, and the width and thickness of the elastic fastener 130 may be increased so that the elastic fastener 130 has high toughness. In order to meet the design requirements of maximum protection force, the elastic fastener 130 may be made of metal or alloy with high hardness, and the width and thickness of the elastic fastener 130 may be reduced so that the elastic fastener 130 has low toughness or high brittleness. When the drum 10 and the polygonal shaft 120 are subjected to excessive impact force, the elastic fastener 130 may be broken to remove the clamping force F applied to the bracket 110 or remove the restriction of the bracket 110 to the polygonal shaft 120. Therefore, when the drum 10 and the polygonal shaft 120 are subjected to excessive impact force and the elastic fastener 130 is broken, the polygonal shaft 120 may be detached from the bracket 110 to prevent damage to the drum 10 and the polygonal shaft 120. In order to meet the design requirements of shock absorption, the elastic fastener 130 can be made of metal or alloy and covered by rubber, or made of rubber or plastic.

[0036] like Figure 1B and Figure 1C As shown, the clamping portion 111 has a notch 1112 connected to the polygonal hole 1111 and a groove 1113 relative to the notch 1112, and the polygonal hole 1111 is connected to the two slits 1121 through the groove 1113. In this embodiment, the polygonal hole 1111 can be a hexagonal hole, and the two opposite corners of the inner contour of the hexagonal hole are respectively connected to the notch 1112 and the groove 1113. Correspondingly, the polygonal shaft 120 can be a hexagonal shaft whose outer contour matches the inner contour of the hexagonal hole. In detail, one corner 121 of the polygonal shaft 120 faces or is inserted into the notch 1112, and the other corner 122 faces or is inserted into the groove 1113.

[0037] Figure 2 FIG. 2 is a front view schematic diagram of an axle fixing device according to another embodiment of the present invention. Figure 2 As shown, the shaft fixing device 100A of this embodiment is similar to the shaft fixing device 100 of the previous embodiment, and the main difference between this embodiment and the previous embodiment is that the polygonal hole 1111 of this embodiment can be a hexagonal hole, and the two opposite sides of the inner contour of the hexagonal hole are respectively connected to the notch 1112 and the groove 1113. Correspondingly, the polygonal shaft 120 can be a hexagonal shaft whose outer contour matches the inner contour of the hexagonal hole. In detail, one side surface 123 of the polygonal shaft 120 faces and covers the notch 1112, and the other side surface 124 faces and covers the groove 1113.

[0038] Figure 3A Schematic diagram of a shaft fixing device according to another embodiment of the present invention. Figure 3B yes Figure 3A Exploded view of the shaft fixture. Figure 3C yes Figure 3A See the front view of the shaft fixture. FIG. 3A to FIG. 3C The shaft fixing device 100B of this embodiment is similar to the shaft fixing device 100 of the aforementioned embodiment, and the main difference between this embodiment and the aforementioned embodiment is that the bracket 110b of this embodiment includes a single extension arm 112b.

[0039] In detail, the extension arm 112b is connected to one end of the clamping portion 111b, and the fixing portion 113b is connected to the other end of the clamping portion 111b. The extension arm 112b is separated from the fixing portion 113b, and a slit 1122 connected to the polygonal hole 1111 is provided between the extension arm 112b and the fixing portion 113b. In addition, an elastic fastener 130 is attached to the extension arm 112b and the fixing portion 113b, wherein two elastic arms 132 contact the extension arm 112b and the fixing portion 113b respectively, and the extension arm 112b and the fixing portion 113b are clamped between the two elastic arms 132. In detail, the two elastic arms 132 apply a clamping force F toward the first fixing hole 1131 to the extension arm 112b and the fixing portion 113b respectively. Therefore, the clamping portion 111 b is driven by the extension arm 112 b and the fixing portion 113 b to retract inwardly to clamp the polygonal shaft 120 , thereby limiting the movement of the polygonal shaft 120 .

[0040] like Figure 3B and Figure 3C As shown, one end 112b1 of the extension arm 112b is connected to the clamping portion 111b, and the other end 112b2 is separated from the fixing portion 113b. In addition, a gap 1123 connected to the outside is formed between the end 112b2 of the extension arm 112b and the fixing portion 113b.

[0041] like Figure 3B and Figure 3C As shown, the clamping portion 111b has a notch 1112 connected to the polygonal hole 1111 and a groove 1113 relative to the notch 1112, and the polygonal hole 1111 is connected to the slit 1122 through the groove 1113. In this embodiment, the polygonal hole 1111 can be a hexagonal hole and the two opposite corners of the inner contour of the hexagonal hole are respectively connected to the notch 1112 and the groove 1113. Correspondingly, the polygonal shaft 120 can be a hexagonal shaft whose outer contour matches the inner contour of the hexagonal hole. In detail, one corner 121 of the polygonal shaft 120 faces or is inserted into the notch 1112, and the other corner 122 faces or is inserted into the groove 1113.

[0042] Figure 4 FIG. 2 is a front view schematic diagram of a shaft fixing device according to another embodiment of the present invention. Figure 4 As shown, the shaft fixing device 100C of this embodiment is similar to the shaft fixing device 100B of the previous embodiment, and the main difference between this embodiment and the previous embodiment is that the polygonal hole 1111 of this embodiment can be a hexagonal hole, and the two opposite sides of the inner contour of the hexagonal hole are respectively connected to the notch 1112 and the groove 1113. Correspondingly, the polygonal shaft 120 can be a hexagonal shaft whose outer contour matches the inner contour of the hexagonal hole. In detail, one side surface 123 of the polygonal shaft 120 faces and covers the notch 1112, and the other side surface 124 faces and covers the groove 1113.

[0043] In summary, in the shaft fixing device of the present invention, the polygonal shaft is clamped by the bracket, and the elastic fastener fixed to the bracket applies a clamping force to the bracket to limit the movement of the polygonal shaft, thereby preventing the polygonal shaft from accidentally detaching from the bracket, and improving the operational reliability and stability of the roller fixed to the polygonal shaft. In addition, the bracket and the elastic fastener can produce elastic deformation to absorb or buffer the impact force applied to the polygonal shaft, thereby preventing the polygonal shaft from being damaged.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shaft fixing device, suitable for fixing a polygonal shaft and a roller fixed to the polygonal shaft, characterized in that: include: A bracket, comprising a clamping portion, two extension arms and a fixing portion, wherein the two extension arms are separated from each other and respectively connected to two opposite ends of the clamping portion, the two extension arms are respectively located on opposite sides of the fixing portion and connected to two opposite ends of the fixing portion, the clamping portion has a polygonal hole, and the fixing portion has a first fixing hole, two slits are provided between the two extension arms and the fixing portion, the two slits are connected to each other and to the polygonal hole, and the polygonal shaft is inserted into the polygonal hole and clamped by the clamping portion; an elastic fastener attached to the two extension arms and the fixing portion, the elastic fastener comprising a mounting portion and two elastic arms, wherein the mounting portion has a mounting hole corresponding to the first fixing hole, and the two elastic arms are respectively connected to opposite sides of the mounting portion, the two elastic arms are respectively in contact with the two extension arms, wherein the two extension arms are clamped between the two elastic arms, and the two elastic arms respectively apply a clamping force toward the first fixing hole to the two extension arms, and the clamping portion is driven by the two extension arms to retract inwardly to limit the movement of the polygonal shaft; as well as A first bolt is inserted into the mounting hole and the first fixing hole to fix the elastic fastener to the bracket.

2. The shaft fixing device according to claim 1, characterized in that: The polygonal hole is a hexagonal hole, and the polygonal axis is a hexagonal axis.

3. The shaft fixing device according to claim 2, characterized in that: The clamping portion has a notch connected to the hexagonal hole and a groove relative to the notch, and the hexagonal hole is connected to the two slits through the groove.

4. The shaft fixing device according to claim 3, characterized in that: One corner of the hexagonal shaft is inserted into the notch, and the other corner of the hexagonal shaft is inserted into the groove.

5. The shaft fixing device according to claim 3, characterized in that: One side surface of the hexagonal shaft covers the notch, and the other side surface of the hexagonal shaft covers the groove.

6. The shaft fixing device according to claim 1, characterized in that: The two extension arms are symmetrically arranged on the two opposite sides of the fixing portion, and the two slits are symmetrically arranged on the two opposite sides of the fixing portion.

7. The shaft fixing device according to claim 1, characterized in that: The fixing portion also has two second fixing holes, and the two second fixing holes are respectively located on the opposite sides of the fixing portion connected to the two extension arms, and the first fixing hole is located between the polygonal hole and the two second fixing holes, wherein the shaft fixing device also includes two second bolts, and the two second bolts are respectively inserted into the two second fixing holes.

8. A shaft fixing device, suitable for fixing a polygonal shaft and a roller fixed to the polygonal shaft, characterized in that: include: A bracket, comprising a clamping portion, an extension arm and a fixing portion, wherein the extension arm is connected to one end of the clamping portion, and the fixing portion is connected to the other end of the clamping portion, the clamping portion has a polygonal hole, and the fixing portion has a first fixing hole, the extension arm is separated from the fixing portion, and a slit is provided between the extension arm and the fixing portion, the slit is connected to the polygonal hole, and the polygonal shaft is inserted into the polygonal hole and clamped by the clamping portion; an elastic fastener attached to the extension arm and the fixing portion, the elastic fastener comprising a mounting portion and two elastic arms, wherein the mounting portion has a mounting hole corresponding to the first fixing hole, and the two elastic arms are respectively connected to opposite sides of the mounting portion, the two elastic arms respectively contact the extension arm and the fixing portion, wherein the extension arm and the fixing portion are clamped between the two elastic arms, and the two elastic arms respectively apply a clamping force toward the first fixing hole to the extension arm and the fixing portion, and the clamping portion is driven by the extension arm and the fixing portion to retract inwardly to limit the movement of the polygonal shaft; as well as A first bolt is inserted into the mounting hole and the first fixing hole to fix the elastic fastener to the bracket.

9. The shaft fixing device according to claim 8, characterized in that: The polygonal hole is a hexagonal hole, and the polygonal axis is a hexagonal axis.

10. The shaft fixing device according to claim 9, characterized in that: The clamping portion has a notch connected to the hexagonal hole and a groove relative to the notch, and the hexagonal hole is connected to the slit through the groove.

11. The shaft fixing device according to claim 10, characterized in that: One corner of the hexagonal shaft is inserted into the notch, and the other corner of the hexagonal shaft is inserted into the groove.

12. The shaft fixing device according to claim 10, characterized in that: One side surface of the hexagonal shaft covers the notch, and the other side surface of the hexagonal shaft covers the groove.

13. The shaft fixing device according to claim 8, characterized in that: One end of the extension arm is connected to the clamping portion, and the other end of the extension arm is separated from the fixing portion, and a gap is formed between the other end of the extension arm and the fixing portion.

14. The shaft fixing device according to claim 8, characterized in that: The fixing portion also has two second fixing holes away from the polygonal hole, and the first fixing hole is located between the polygonal hole and the two second fixing holes, wherein the shaft fixing device also includes two second bolts, and the two second bolts are respectively inserted into the two second fixing holes.

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