TWI571861B - Drum fastener - Google Patents

Description

Drum frame positioning device

The present invention relates to positioning devices, and more particularly to a drum frame positioning device.

The conventional drum frame positioning device is provided with a threaded hole on the rod portion, the rod portion is fixed to the drum body, and a screw is passed through the drum frame and screwed to the threaded hole to position the drum frame on the drum body. However, such a screw locking method, if the fixing hole of the drum frame does not correspond to the position of the threaded hole, may cause difficulty in screw mounting, and may easily damage the thread in the threaded hole, thereby causing inconvenience in assembly in the future.

Therefore, the former has invented a drum frame positioning device as shown in TWM322594. The drum frame positioning device has a body, a screwing member and a screw. The opposite ends of the body are provided with a locking portion, and the two locking portions are arranged. a rod portion is provided, each of the locking portions has a coupling hole, the screwing member has an internal thread, and the screwing member can be restricted to the coupling hole of the locking portion by the rod portion, and the screw can pass through the drum frame After that, the internal thread is screwed with the screwing member, so that the screwing member can shorten the length of the thread, and is less restricted when the screw is locked, so that the assembly is more convenient.

However, when the screw is assembled, the screwing member, the locking portion and the rod portion are required to cooperate with each other to position the screwing member between the locking portion and the rod portion, and assembly is still very inconvenient.

Therefore, it is necessary to provide a novel and progressive drum frame positioning device. To solve the above problems.

The main object of the present invention is to provide a drum frame positioning device which can be assembled into a joint hole of a lock portion by using a screw thread on the outer side of the screw portion, and can be positioned without interfacing with the rod portion compared with the prior art. To reduce the difficulty of assembly. Moreover, for example, the screwing portion can be locked from the outer side of the body to the coupling hole, so that when the screwing portion is replaced, it is completely unnecessary to remove the body from the drum body, which is very convenient.

In order to achieve the above object, the present invention provides a drum frame positioning device for fixing at least one drum frame to a drum. The drum frame positioning device includes: a body for being disposed on a circumferential surface of the drum body, at least one coupling hole is formed, and an inner wall of each of the coupling holes forms a first internal thread; at least one screwing portion, each of the screws The joint has a first external thread and a second internal thread which are screwed to each of the first internal threads; at least one fixing portion, each of the fixing portions has an abutting joint and a second external thread, and each of the fixing portions is provided The abutting joint abuts against one side of the drum frame and the second external thread is screwed with a second internal thread of the screwing portion on the other side of the drum frame.

1, 1a, 1b‧‧‧Drum frame positioning device

10, 10a‧‧‧ ontology

11, 11a‧‧‧Locking Department

12, 12a‧‧‧ combination hole

121‧‧‧First internal thread

122, 122a, 122b‧‧‧ inner shoulder

20, 20a‧‧‧ screwing department

21, 21a‧‧‧ first external thread

22, 22a‧‧‧ second internal thread

210a‧‧‧First set

220a, 220b‧‧‧ second set

30, 30a‧‧‧ fixed department

123, 123a, 123b‧‧‧ cushions

124a‧‧‧容槽

13, 13a‧‧‧ body

130, 130a‧‧‧ perforation

31‧‧‧Abutment

32‧‧‧Second external thread

51‧‧‧Body

52‧‧‧ drum box

Figure 1 is a perspective view of a first embodiment of the present invention.

Figure 2 is an exploded view of the first embodiment of the present invention.

Figure 3 is a cross-sectional view showing a first embodiment of the present invention.

Figure 4 is a cross-sectional view showing a second embodiment of the present invention.

Figure 5 is a partial cross-sectional view showing a second embodiment of the present invention.

Figure 5a is a partial cross-sectional view showing a third embodiment of the present invention.

Figure 6 is a cross-sectional view showing a fourth embodiment of the present invention.

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the invention as claimed.

Referring to Figures 1 through 3, there is shown a preferred embodiment of the present invention. The drum frame positioning device 1 of the present invention is configured to secure at least one drum frame 52 to a drum body 51. The drum frame positioning device 1 includes a body 10 , at least one screwing portion 20 , and at least one fixing portion 30 .

The body 10 is disposed on the circumferential surface of the drum body 51, and the body 10 defines at least one coupling hole 12, and the inner wall of each of the coupling holes 12 defines a first internal thread 121. In the present embodiment, the body 51 is a drum of a snare drum (of course, for example, a drum of other drums such as a bass drum).

Each of the screwing portions 20 has a first external thread 21 and a second internal thread 22 which are screwed to each of the first internal threads 121 . In the embodiment, each of the screwing portions 20 is a single member integrally formed, and the second internal thread 22 is disposed on an inner wall surface of the screwing portion 20 . The screwing portion 20 is screwed inwardly from the end edge of the body 10 to the coupling hole 12, and when the screwing portion 20 is replaced, the screwing portion 20 only needs to be screwed out from the outside to be replaced. It is more convenient to replace the screw portion 20 without disassembling the body 10.

In order to prevent the fixing member 30 and the body 10 from being loosened due to vibration when the drum is struck, an inner shoulder portion 122 and a pad member 123 are further disposed in the coupling hole 12, and the pad member 123 is axially abutted. The fixing portion 30 is inserted between the screwing portion 20 and the inner shoulder portion 122, and the fixing portion 30 is inserted into the pad member 123. Thus, the pad member 123 can reduce the vibration, thereby preventing the fixing portion 30 from being combined. The hole 12 is loose. Moreover, the screwing portion 20 and the inner shoulder portion 122 axially abut against the pad member 123, The pad member 123 can be positioned within the coupling hole 12.

Each of the fixing portions 30 has an abutting joint 31 and a second outer thread 32. The fixing portion 30 is configured to pass through the drum frame 52, and the abutting joint 31 abuts on one side of the drum frame 52 and the second outer portion. The thread 32 is screwed to the second internal thread 22 of the screwing portion 20 on the other side of the drum frame 52, so that the drum frame 52 can be fixed to the drum body 51. In other embodiments, a cushion member may be additionally interposed between the abutting joint and the drum frame, so that the shock absorbing and anti-loose effect is better. It should be noted that the screwing portion can also be replaced with a screwing portion having a second internal thread of different diameter and length according to different requirements to conform to the second external thread of various diameters and lengths.

In the actual assembly, the screwing portion 20 is first screwed from the outside to the coupling hole 12, and the fixing portion 30 is passed through the drum frame 52 and screwed to the screwing portion 20 until the abutting joint 31 is reached. Assembly is completed up to the drum frame 52, and the above assembly process can be performed without removing the body 10 from the drum body 51, which is very convenient.

Referring to the drum frame positioning device 1a of another embodiment shown in FIGS. 4 to 5, the screwing portion is not limited to a single member, and the screwing portion of the wheel frame positioning device 1a is compared with the embodiment of FIGS. 20a includes a first sleeve 210a and a second sleeve 220a, and the first sleeve 210a has the first external thread 21a, and the second sleeve 220a has a second internal thread 22a, the second sleeve 220a The position is limited between the coupling hole 12a and the first sleeve 210a. Further, the second sleeve 220a is axially abutted between the coupling hole 12a and the first sleeve 210a, so that the second sleeve 220a can not be detached from the coupling hole 12a. Out.

An inner shoulder portion 122a and a pad member 123a may be disposed in the coupling hole 12a of the embodiment. The pad member 123a axially abuts between the second sleeve body 220a and the inner shoulder portion 122a. The fixing portion 30a Inserted in the pad member 123a (of course, the pad member 123b of FIG. 5a can be radially abutted against Between the fixing portion and the second sleeve 220b, and axially abutting the second sleeve 220b and the inner shoulder portion 122b, the shock absorption and the anti-loose effect can be obtained, and the cushion member can be 123a limit.

In order to fix the second sleeve 220a when the fixing portion 30a is screwed, each of the coupling holes 12a is further provided with a receiving groove 124a corresponding to the second sleeve 220a. The second sleeve 220a is not In the case of a circular sleeve, the second sleeve 220a is non-rotatably engaged with the wall surface of the receiving groove 124a. Further, the first sleeve body 210a is screwed inwardly from the end edge of the body 10a to the coupling hole 12a, thereby limiting the second sleeve body 220a.

The drum frame positioning device 1 (1a) of all the embodiments shown in FIGS. 1 to 5 and FIG. 5a includes two screwing portions 20 (20a) and two fixing portions 30 (30a), and the two drum frames are provided. The body 10 (10a) further includes two locking portions 11 (11a) and a body portion 13 (13a) disposed between the two locking portions 11 (11a). Each of the locking portions 11 (11a) defines a coupling hole 12 (12a). The body 10 (10a) is disposed between the two drum frames 52 and faces the two coupling holes 12 (12a) respectively. Each of the locking portions 11 (11a) of the drum frame 52 is fixed to the drum body 51. Each of the fixing portions 30 (30a) is disposed on a drum frame 52 and a screwing portion 20 (20a).

In this embodiment, the two locking portions 11 (11a) and the body portion 13 (13a) are integrally formed as a single member, so that each of the screwing portions 30 (30a) can only be from each of the bodies 10 (10a). The two end edges are locked into the interior of each of the bodies 10 (10a), which can reduce the inconvenience of assembly (of course, the locking portion and the body of the drum frame positioning device 1b shown in FIG. 6 are detachable). . In addition, the body 10 (10a) is made of zinc-aluminum alloy, which is beneficial to the surface treatment process, so that its appearance is brighter and its material is also favorable for processing.

Further, the body portion 13 (13a) further includes a through hole 130 (130a), and each of the coupling holes 12 (12a) extends through the locking portion 11 (11a) and is connected to the through hole 130 (130a). The pad member 123 (123a, 123b) is partially provided on the body portion 13 (13a) and partially disposed on the locking portion 11 (11a). In other embodiments, the body is not limited to being provided with two pad members, and only one pad member is disposed in the middle of the body, and the fixing portions are respectively inserted at the two ends of the pad member, which also has the effects of shock absorption and anti-looseness.

In summary, the drum frame positioning device of the present invention can be assembled into the locking portion by using the screw on the outer side of the screwing portion, thereby locking the locking portion into the coupling hole, thereby reducing the difficulty in assembly; and for example, The screwing portion is locked from the outer side of the body to the coupling hole, so that when the screwing portion is replaced, it is completely unnecessary to remove the body from the drum body for replacement, which is very convenient.

In summary, the overall structural design, practicability and efficiency of the present invention are indeed fully in line with the needs of industrial development, and the disclosed structural invention is also an unprecedented innovative structure, so it has "novelty" should Undoubtedly, the invention can be more effective than the conventional structure, and therefore has "progressiveness", which fully complies with the requirements of the application requirements of the invention patents of the Chinese Patent Law, and is filed according to law, and please The bureau will review it early and give it affirmation.

1‧‧‧Drum frame positioning device

10‧‧‧ Ontology

11‧‧‧Locking

12‧‧‧Combination hole

121‧‧‧First internal thread

123‧‧‧Cushion

13‧‧‧ Body

20‧‧‧ screwing department

21‧‧‧First external thread

22‧‧‧Second internal thread

30‧‧‧ Fixed Department

31‧‧‧Abutment

32‧‧‧Second external thread

51‧‧‧Body

52‧‧‧ drum box

Claims (10)

A drum frame positioning device for fixing at least one drum frame to a drum body, comprising: a body for being disposed on a circumferential surface of the drum body, at least one coupling hole is formed, and an inner wall of each of the coupling holes is formed a first internal thread; at least one screwing portion, each of the screwing portions has a first external thread and a second internal thread which are screwed on each of the first internal threads; at least one fixing portion, each of the fixing portions has a An abutting joint and a second external thread, each of the fixing portions is configured to pass through the drum frame, the abutting joint abuts against one side of the drum frame, and the second external thread and the screwing on the other side of the drum frame The second internal thread of the part is screwed. The drum frame positioning device according to claim 1, wherein each of the screwing portions is a single member integrally formed, and the second internal thread is disposed on an inner wall surface of the screwing portion. The rim frame positioning device of claim 2, wherein the coupling hole is further provided with an inner shoulder portion and a pad member, the pad member axially abuts between the screw portion and the inner shoulder portion, the fixing portion The pad is inserted into the pad, and the screwing portion is screwed inwardly from the end edge of the body to the coupling hole. The rim frame positioning device of claim 1, wherein the screwing portion comprises a first sleeve body and a second sleeve body, the first sleeve body has the first external thread, and the second sleeve body has the first The second sleeve is disposed between the coupling hole and the first sleeve. The rim frame positioning device of claim 4, wherein the coupling hole is further provided with an inner shoulder portion and a pad member, the pad member axially abuts between the second sleeve body and the inner shoulder portion, The fixing portion is inserted into the cushion member. The rim frame positioning device of claim 5, wherein each of the coupling holes is further provided with a receiving groove corresponding to the second sleeve body, and the second sleeve system is a non-circular sleeve body, and the second sleeve is Incompetent The first sleeve system is screwed into the coupling hole from the end edge of the body to the wall surface of the receiving groove. The rim frame positioning device of claim 4, wherein the coupling hole is further provided with an inner shoulder portion and a pad member, the second sleeve body axially abuts the inner shoulder portion, and the fixing portion is inserted into the pad And the pad is radially abutted between the fixing portion and the second sleeve. The drum frame positioning device according to any one of claims 1 to 7, wherein the drum frame positioning device comprises two screwing portions and two fixing portions, and two drum frames are oppositely fixed to the drum. The body further includes two locking portions and a body portion disposed between the two locking portions, each of the locking portions defines a coupling hole, the body is disposed between the two drum frames and the body is The two fastening holes are respectively fixed to the drum body, and each of the fixing portions is disposed on a drum frame and a screwing portion. The drum frame positioning device according to claim 8, wherein the two locking portions and the body are integrally formed as a single member, and the system is made of zinc-aluminum alloy. The drum frame positioning device of claim 8, wherein the body further comprises a through hole, each of the coupling holes penetrating through the locking portion and communicating with the through hole.