An expandable tray rack locking device

Abstract

This utility model discloses an expandable disc holder locking device for a disc opening machine, belonging to the technical field of disc opening machines. It includes an expandable component and a pull rivet component. The expandable component includes a sleeve rod with three sets of evenly distributed positioning blocks at its bottom and three sets of evenly distributed slit openings at its bottom. The pull rivet component includes a rod body with a threaded structure at its bottom and a hand-tightening part at its top, with three sets of evenly distributed extension blocks on the hand-tightening part. This expandable disc holder locking device, through the expandable component and the matching pull, allows the user to manually tighten the pull rivet, causing the locking teeth to expand outward from the slit openings, thus securing the disc holder. Simultaneously, it maintains the rotation axis of the disc holder coincides with the geometric axis of the pull rivet. This not only accommodates disc holders with various processing precision but also avoids swaying and shaking caused by machining errors in the disc holder mounting holes.

Description

Technical Field

[0001] This utility model specifically relates to an expandable tray frame locking device for a tray opening machine, belonging to the field of tray opening machine technology. Background Technology

[0002] Reel-to-reel tape recorders, as the original master tape source for music, were the most important recording equipment before the advent of digital recording technology. After the use of new digital audio tapes, recording equipment fully entered the computer age, and reel-to-reel tape recorders based on analog audio tapes gradually faded from the recording history stage at the beginning of this century.

[0003] Today, computer recording and editing have completely taken over the mainstream, but professional institutions such as record companies, recording studios, radio stations, television stations and film companies that have an extreme pursuit of analog sound sources still insist on using reel-to-reel recorders for analog recording due to dissatisfaction with digital recording formats.

[0004] The existing device has the advantages of simple structure and convenient use. However, when the machining accuracy of the mounting holes for the reel is insufficient, the retaining ring's downward pressure on the reel is not precise enough, and the rotation axis of the reel does not coincide with the axis of the retaining ring. This causes the reel to eccentrically wobble during rotation, resulting in shaking during tape feeding and affecting the playback quality of the reel. Secondly, when the machining accuracy of the mounting holes for the reel is low and the dimensional error is large, the retaining teeth and retaining ring can easily block the reel, preventing it from being installed in the intended position. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by providing an expandable tray frame locking device for opening trays, thereby enhancing the stability of the tray frame. The device includes an expandable component and a pull-pin assembly. The expandable component includes a sleeve rod with three sets of evenly distributed positioning blocks at its bottom and three sets of evenly distributed slot openings at its bottom. The pull-pin assembly includes a rod body with a threaded structure at its bottom and a hand-tightening part at its top, with three sets of evenly distributed extension blocks on the hand-tightening part.

[0006] Furthermore, the sleeve rod has a cavity in the middle, and the pull pin assembly passes through the cavity.

[0007] Furthermore, the extension block is located above the sleeve rod, and the length of the rivet assembly is greater than the length of the expandable assembly.

[0008] Furthermore, the cavity is provided with an extended inclined surface corresponding to that on the rod.

[0009] Furthermore, the positioning blocks and the slit openings are arranged in a cyclical pattern, and the distance between the positioning blocks and the adjacent slit openings on both sides is the same.

[0010] Furthermore, the top of the slit opening is higher than the top of the positioning block.

[0011] Furthermore, the top of the positioning block is inclined and the side closer to the sleeve rod is at a height farther away from the side of the sleeve rod.

[0012] Beneficial effects

[0013] This invention utilizes an expandable component and a matching pull mechanism. By manually tightening the pull stud, the locking teeth expand outward from the gap opening, thus securing the disc frame. Simultaneously, it ensures that the rotation axis of the disc frame coincides with the geometric axis of the pull stud. This not only accommodates open discs with disc frames of various processing precisions but also avoids swaying and shaking caused by machining errors in the disc frame mounting holes. Attached Figure Description

[0014] Figure 1 This is a side view of the expandable component of this utility model;

[0015] Figure 2 This is a top view of the expandable component of this utility model;

[0016] Figure 3 This is a side sectional view of the expandable component of this utility model;

[0017] Figure 4 This is a side view of the rivet assembly of this utility model;

[0018] Figure 5 This is a top view of the rivet assembly of this utility model.

[0019] In the diagram: 1. Expandable component; 101. Sleeve rod; 102. Positioning block; 103. Gap opening; 2. Pulley assembly; 201. Rod body; 202. Threaded structure; 203. Hand tightening part; 204. Extension block; 3. Cavity. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5As shown, an expandable tray opening machine tray frame locking device includes an expandable component 1 and a pull rivet component 2. The expandable component 1 includes a sleeve rod 101, with three sets of evenly distributed positioning blocks 102 at the bottom of the sleeve rod 101 and three sets of evenly distributed slot openings 103 at the bottom of the sleeve rod 101. The pull rivet component 2 includes a rod body 201, with a threaded structure 202 at the bottom of the rod body 201 and a hand tightening part 203 at the top of the rod body 201. The hand tightening part 203 has three sets of evenly distributed extension blocks 204, ensuring that the tray frame can pass through the top of the rod body 201 and be installed in a predetermined position. Manually tightening the pull rivet causes the locking teeth to expand outward from the slot openings 103, thereby securing the tray frame.

[0022] As a technical optimization of this utility model, the sleeve rod 101 has a cavity 3 in the middle, the pull rivet assembly 2 passes through the cavity 3, the extension block 204 is located above the sleeve rod 101, the length of the pull rivet assembly 2 is greater than the length of the expandable assembly 1, the cavity 3 has an expansion inclined surface corresponding to the rod body 201, the positioning block 102 and the slit opening 103 are arranged in a cyclic manner, the distance between the positioning block 102 and the adjacent slit opening 103 on both sides is the same, the top of the slit opening 103 is higher than the top of the positioning block 102, the top of the positioning block 102 is inclined and the side closer to the sleeve rod 101 is far away from the side of the sleeve rod 101, keeping the rotation axis of the disc frame coincide with the geometric axis of the pull rivet.

[0023] Working principle: The user places the disc holder on the sleeve rod 101 and installs it in the predetermined position, so that the positioning groove on the disc corresponds to the position of the positioning block 102. Then, the user holds the extension block 204 and rotates it to drive the rod 201 to move downward in the cavity 3 through the threaded structure 202. At this time, the rod 201 will push the locking teeth pre-installed in the slit opening 103 to slide outward through the slit opening 103, thereby fixing the disc holder.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An expandable tray frame locking device for a tray opening machine, characterized in that: The assembly includes an expandable component (1) and a rivet assembly (2). The expandable component (1) includes a sleeve (101), the bottom of which is provided with three sets of evenly distributed positioning blocks (102) and three sets of evenly distributed slot openings (103). The rivet assembly (2) includes a rod (201), the bottom of which is provided with a threaded structure (202) and the top of which is provided with a tightening part (203). The tightening part (203) is provided with three sets of evenly distributed extension blocks (204).

2. An expandable tray rack locking device as claimed in claim 1, wherein: The sleeve rod (101) has a cavity (3) in the middle, and the pull pin assembly (2) passes through the cavity (3).

3. An expandable tray locking device as claimed in claim 2, wherein: The extension block (204) is located above the sleeve rod (101), and the length of the rivet assembly (2) is greater than the length of the expandable assembly (1).

4. An expandable pallet locking device as claimed in claim 3, wherein: The cavity (3) is provided with an extended inclined surface corresponding to that on the rod (201).

5. An expandable pallet locking device as claimed in claim 4, wherein: The positioning block (102) and the slit opening (103) are arranged in a cyclical pattern, and the distance between the positioning block (102) and the adjacent slit opening (103) on both sides is the same.

6. An expandable pallet locking device as claimed in claim 5, wherein: The top of the slit opening (103) is higher than the top of the positioning block (102).

7. An expandable pallet locking device as claimed in claim 6, wherein: The top of the positioning block (102) is inclined and the side closer to the sleeve (101) is far away from the side of the sleeve (101).

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