Encoder knob mounting structure and projector

Abstract

The utility model discloses an encoder knob installation structure and a projector, comprising a housing, a support fixedly installed inside the housing, an encoder assembly fixedly installed on the bottom surface of the support, a guide groove arranged on the support, a knob arranged above the support, a rotating column and a screw column fixedly installed on the bottom surface of the knob, and an encoder assembly fixedly installed on the bottom surface of the rotating column. A limiting block is fixedly arranged at the bottom of the surface of the periphery of the rotating column, and a screw is arranged between the screw column and the support. The screw penetrates through the guide groove to be connected with the screw column, the screw column and the support are limited, the screw column is prevented from being separated from the guide range of the guide groove, the limiting block and the support are in an initial clamping state all the time, and therefore the rotating column is prevented from being separated from the support. The knob can be mounted and matched only by guiding in the guide groove and combining the screw with the screw column, so that the assembly cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of encoder knob installation, in particular to an encoder knob installation structure and a projector. Background Art

[0002] At present, most encoder knobs on the market are assembled from the outside. In order to meet the requirements of pull-out force and feel, it is usually necessary to add threads and glue fixation. Specifically, an internal thread is set inside the rotating column of the knob, and an external thread is set on the rotating shaft of the encoder. The two are fixed by threads. In order to prevent the threads from being loosened during rotation, glue needs to be applied again between the threads. The assembly process is complicated, which increases the material and assembly costs. For this reason, we provide an encoder knob installation structure and a projector to solve the above problems. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide an encoder knob installation structure and a projector.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] An encoder knob installation structure comprises a shell, a bracket is fixedly installed inside the shell, an encoder assembly is fixedly installed on the bottom surface of the bracket, a guide groove is opened on the bracket, a knob is arranged above the bracket, a rotating column and a screw column are fixedly installed on the bottom surface of the knob, a limit block which is clamped with the bracket is fixedly arranged at the bottom of the outer circular surface of the rotating column, a screw for limiting the rotation of the knob is arranged between the screw column and the bracket, and the screw passes through the guide groove from the bottom and is connected to the screw column.

[0006] Preferably, the encoder assembly includes a circuit board, an encoder is arranged on the circuit board, the encoder includes a rotating shaft with adjustable gear positions, and the rotating column passes through the bracket and is transmission-connected to the rotating shaft.

[0007] Preferably, a fixing groove fixedly connected to the rotating shaft is provided in the rotating column.

[0008] Preferably, the bracket includes a mounting plate detachably mounted to the housing, a mounting frame is fixedly protruded on the mounting plate, and a center hole for the rotating column to pass through is opened at the center of the upper surface of the mounting frame.

[0009] Preferably, the guide groove is an arc groove with the central hole as the center, and the arc of the arc groove is less than one hundred and eighty degrees.

[0010] Preferably, at least one avoidance groove is provided on the inner wall of the center hole, a limit block adapted to the avoidance groove is fixedly provided on the bottom of the outer circular surface of the rotating column, and a limit rib for limiting abutment is also fixedly provided on the inner wall of the knob; during installation, the limit block rotates through the avoidance groove and abuts against the inner top wall of the mounting frame, and the limit rib abuts against the upper surface of the mounting frame.

[0011] Preferably, the screw includes a limiting portion screwed with the screw column, and a threaded portion is fixedly provided at the other end of the limiting portion, the threaded portion abuts against the inner top wall of the mounting frame at the position of the guide groove, and the diameter of the threaded portion is larger than the groove width of the guide groove.

[0012] The utility model also discloses a projector, comprising any one of the above-mentioned encoder knob installation structures, and a button is also installed on the shell.

[0013] The utility model has the following advantages:

[0014] 1. The utility model connects the screw column with the screw column through the guide groove, so that the screw column and the bracket are limited, preventing the screw column from leaving the guide range of the guide groove so that the limit block and the bracket are always in the initial clamping state, thereby preventing the rotating column from separating from the bracket. Compared with the existing external assembly and glue fixing methods, the present application only needs to guide the guide groove and combine the screw and the screw column to achieve the installation and matching of the knob, thereby reducing the assembly cost.

[0015] 2. The utility model realizes the transmission of the rotational power from the knob to the rotating shaft through the cooperation between the fixing groove inside the rotating column and the rotating shaft, thereby realizing the adjustment.

[0016] 3. The utility model sets a limit block on the outer surface of the rotating column and a limit rib on the inner wall of the knob. When the rotating column drives the limit block to pass through the avoidance groove and rotate, the limit block abuts against the top wall of the center hole and the limit rib abuts against the upper surface of the mounting frame, thereby limiting the position of the knob, preventing the knob from separating from the mounting frame, and achieving installation limitation of the knob. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the overall assembly state of the utility model from the first perspective.

[0018] Figure 2 It is a structural schematic diagram of the overall assembly state of the utility model from a second viewing angle.

[0019] Figure 3 It is a schematic diagram of the explosion state of the utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of the knob of the utility model.

[0021] Figure 5 This is a schematic diagram of the support structure of the utility model.

[0022] Figure 6 It is a bottom view of the knob of the present invention.

[0023] Figure 7 It is a top view schematic diagram of the bracket of the utility model.

[0024] Figure 8 It is a schematic diagram of the clamping state of the mounting frame and the limit block of the utility model.

[0025] Fig. 9 This is a schematic diagram of the screw structure of the utility model.

[0026] Fig.10 This is a schematic diagram of the projector as a whole.

[0027] In the figure, 1. housing; 2. encoder assembly; 21. circuit board; 22. rotating shaft; 3. bracket; 31. mounting plate; 32. mounting frame; 33. center hole; 34. avoidance groove; 4. guide groove; 5. screw; 51. threaded part; 52. limiting part; 6. knob; 7. rotating column; 8. screw column; 9. limiting rib; 10. limiting block; 11. fixing groove; 12. button. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figure 1 — Figure 6 The embodiment shown.

[0031] An encoder knob installation structure includes a shell 1, a bracket 3 is fixedly installed inside the shell 1, an encoder assembly 2 is fixedly installed on the bottom surface of the bracket 3, a guide groove 4 is opened on the bracket 3, a knob 6 is arranged above the bracket 3, a rotating column 7 and a screw column 8 are fixedly installed on the bottom surface of the knob 6, a limit block 10 that is clamped with the bracket 3 is fixedly arranged at the bottom of the outer circular surface of the rotating column 7, a screw 5 for limiting the rotation of the knob 6 is arranged between the screw column 8 and the bracket 3, and the screw 5 passes through the guide groove 4 from the bottom and is connected to the screw column 8.

[0032] See also Figures 1 to 4 As shown, when the knob 6 needs to be installed, first, the rotating column 7 is passed through the bracket 3 to the position of the encoder assembly 2, and the rotating column 7 is connected to the adjustment position of the encoder assembly 2 for transmission. At this time, the screw column 8 is located at the upper surface position of the bracket 3, and the rotating column 7 and the screw column 8 are driven by the knob 6 to rotate a certain angle so that the screw column 8 is located directly above the guide groove 4. At this time, the limit block 10 is clamped with the bracket 3, but the height movement of the rotating column 7 is limited, so that the rotating column 7 cannot be separated from the bracket 3, and the rotation direction of the rotating column 7 is not restricted. That is to say, the rotating column 7 can be rotated in the rotation direction by a certain angle, and then the screw 5 passes through the guide groove 4 and is threadedly connected to the screw column 8. The screw 5 is used to limit the knob 6 and the bracket 3 in the height direction. During the rotation of the screw column 8 within the guide range of the guide groove 4, the limit block 10 is always in a clamping state with the bracket 3 to prevent the knob 6 from being separated from the bracket 3, thereby completing the installation of the knob 6.

[0033] In this embodiment, the transmission connection mode between the rotating column 7 and the encoder assembly 2 can be a snap-on transmission mode or other transmission modes. The specific transmission mode is not limited here and can be selected and designed according to actual conditions.

[0034] In this example, see Figure 2 As shown, the bracket 3 and the housing 1 are installed by snap-fitting. Other connection and installation methods can also be used between the bracket 3 and the housing 1, which can be designed according to needs.

[0035] The encoder assembly 2 includes a circuit board 21 , on which an encoder 23 is disposed. The encoder 23 includes a rotating shaft 22 with adjustable gear positions. The rotating column 7 passes through the bracket 3 and is in transmission connection with the rotating shaft 22 .

[0036] The rotating column 7 is provided with a fixing groove 11 fixedly connected to the rotating shaft 22 .

[0037] See also Figure 3 and Figure 4As shown, the fixed groove 11 in the rotating column 7 is fixedly connected with the rotating shaft 22 to realize transmission. When the knob 6 rotates, it also drives the rotating column 7 to rotate. Under the premise that the fixed groove 11 is engaged with the rotating shaft 22, the rotation of the rotating column 7 will also drive the rotating shaft 22 on the encoder 23 to rotate, thereby realizing gear adjustment.

[0038] The bracket 3 includes a mounting plate 31 detachably mounted on the housing 1 , a mounting frame 32 is fixedly protruded on the mounting plate 31 , and a center hole 33 for the rotating column 7 to pass through is opened at the center of the upper surface of the mounting frame 32 .

[0039] See also Figure 2 and Figure 5 As shown, by avoiding the central hole 33, the fixing groove 11 in the rotating column 7 can be transmission-connected with the rotating shaft 22, thereby driving the rotating shaft 22 to rotate.

[0040] The guide groove 4 is an arc groove with the central hole 33 as the center, and the arc of the arc groove is less than 180 degrees.

[0041] At least one avoidance groove 34 is opened on the inner wall of the center hole 33, and a limit block 10 adapted to the avoidance groove 34 is fixedly arranged at the bottom of the outer circular surface of the rotating column 7, and a limit rib 9 for limiting abutment is also fixedly arranged on the inner wall of the knob 6; during installation, the limit block 10 passes through the avoidance groove 34 and rotates to abut against the inner top wall of the mounting frame 32, and the limit rib 9 abuts against the upper surface of the mounting frame 32.

[0042] See also Figures 3 to 7 As shown, in this embodiment, there are two limit blocks 10 and two avoidance grooves 34, the two avoidance grooves 34 are respectively on both sides of the circumference of the center hole 33, and the two avoidance grooves 34 are symmetrically distributed, and the corresponding two limit blocks 10 are located on both sides of the outer surface of the fixing groove 11, and the two limit blocks 10 are symmetrically distributed, and the center line between the screw column 8 and the rotating column 7 is vertically distributed with the line between the two limit blocks 10, that is, Figure 6 The angle of α is ninety degrees; the connecting line between the two ends of the guide groove 4 and the connecting line between the two avoidance grooves 34 are vertically distributed, that is, Figure 7 and Figure 8 The angle of β is ninety degrees.

[0043] See also Figures 3 to 8As shown, when installing the knob 6, first align the two limit blocks 10 on the outer surface of the rotating column 7 with the two avoidance grooves 34, then move the rotating column 7 downward so that the limit block 10 is located below the inner top surface of the mounting frame 32, at this time, the limit rib 9 abuts against the upper surface of the mounting frame 32, and then rotate the rotating column 7 by the knob 6 to misalign the two limit blocks 10 with the two avoidance grooves 34. At this time, the avoidance grooves 34 and the limit blocks 10 are respectively located on the upper and lower sides of the top wall of the mounting frame 32. For this reason, at this time, as long as the limit blocks 10 and If the avoidance groove 34 is not aligned, the rotating column 7 will not be separated from the mounting bracket 32, thereby realizing the clamping connection between the limit block 10, the avoidance groove 34 and the mounting bracket 32. As the angle of the rotating column 7 rotates, the screw column 8 will be located at the position of the guide groove 4, and then the screw 5 and the screw column 8 are threadedly tightened and fixed. At this time, the limit block 10, the avoidance groove 34 and the mounting bracket 32 ​​are clamped, so that the rotating column 7 and the mounting bracket 32 ​​are fixed and cannot move in the height direction, but can rotate with the center hole 33 as the center of the circle.

[0044] When in use, the rotating column 7 drives the screw column 8 to rotate to the two extreme ends of the guide groove 4 and is blocked by the screw 5, so that the rotating column 7 can no longer rotate, thereby aligning the limit block 10 with the avoidance groove 34. At this time, the limit block 10 and the avoidance groove 34 always remain in a misaligned state, that is, the limit block 10 is clamped with the mounting frame 32, so that the rotating column 7 cannot move in the vertical direction, so that the knob 6 cannot be separated from the mounting frame 32, and the installation state is completed.

[0045] The screw 5 includes a limiting portion 52 screwed with the screw column 8, and a threaded portion 51 is fixedly provided at the other end of the limiting portion 52. The threaded portion 51 abuts against the inner top wall of the mounting frame 32 at the position of the guide groove 4, and the diameter of the threaded portion 51 is larger than the groove width of the guide groove 4.

[0046] See also Figure 5 and Fig. 9 As shown, by making the width of the threaded portion 51 greater than the groove width of the guide groove 4, the limitation between the screw column 8 and the guide groove 4 can be achieved. Even if the limit block 10 is aligned with the avoidance groove 34 or the limit block 10 and the rotating column 7 are broken and separated, the height direction of the screw column 8 can be limited due to the clamping connection between the threaded portion 51 and the guide groove 4, thereby limiting the height direction of the knob 6 to prevent it from being separated from the mounting frame 32, realizing the limiting function, and completing the installation of the knob 6.

[0047] The utility model also includes a projector, including any one of the above encoder knob installation structures, and a button 12 is also installed on the housing 1.

[0048] The working process of the utility model is as follows: first, the limit block 10 is aligned with the avoidance groove 34 so that the rotating column 7 passes through the center hole 33, and then the rotating column 7 is rotated by the knob 6, so that the limit block 10 and the avoidance groove 34 are misaligned and snap-fitted with the mounting bracket 32. When the screw column 8 is rotated to the position of the guide groove 4, the screw 5 passes through the guide groove 4 to connect with the screw column 8. When the knob 6 drives the screw column 8 to rotate, due to the limitation between the screw 5 and the guide groove 4, the screw column 8 cannot rotate beyond the guiding range of the guide groove 4, so that the limit block 10 and the avoidance groove 34 are always in a snap-fitted state with the mounting bracket 32, and the knob 6 can rotate within the guiding range of the guide groove 4 without being separated from the mounting bracket 32.

[0049] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An encoder knob mounting structure, comprising a housing (1), characterized in that: A bracket (3) is fixedly installed inside the housing (1), an encoder assembly (2) is fixedly installed on the bottom surface of the bracket (3), a guide groove (4) is provided on the bracket (3), a knob (6) is arranged above the bracket (3), a rotating column (7) and a screw column (8) are fixedly installed on the bottom surface of the knob (6), a limit block (10) which is clamped with the bracket (3) is fixedly arranged at the bottom of the outer circumferential surface of the rotating column (7), a screw (5) for rotationally limiting the knob (6) is arranged between the screw column (8) and the bracket (3), and the screw (5) passes through the guide groove (4) from the bottom and is connected to the screw column (8).

2. The encoder knob installation structure according to claim 1, characterized in that: The encoder assembly (2) comprises a circuit board (21), an encoder (23) is arranged on the circuit board (21), the encoder (23) comprises a rotating shaft (22) with adjustable gear positions, and the rotating column (7) passes through the bracket (3) and is in transmission connection with the rotating shaft (22).

3. The encoder knob installation structure according to claim 2, characterized in that: The rotating column (7) is provided with a fixing groove (11) fixedly connected to the rotating shaft (22).

4. The encoder knob installation structure according to claim 1, characterized in that: The bracket (3) comprises a mounting plate (31) detachably mounted on the housing (1); a mounting frame (32) is fixedly protruded from the mounting plate (31); a center hole (33) for the rotating column (7) to pass through is provided at the center of the upper surface of the mounting frame (32).

5. The encoder knob installation structure according to claim 4, characterized in that: The guide groove (4) is a circular arc groove with the central hole (33) as the center, and the arc of the circular arc groove is less than one hundred and eighty degrees.

6. The encoder knob installation structure according to claim 4, characterized in that: At least one avoidance groove (34) is provided on the inner wall of the central hole (33), and a limiting rib (9) for limiting abutment is also fixedly provided on the inner wall of the knob (6); during installation, the limiting block (10) passes through the avoidance groove (34) and rotates to abut against the inner top wall of the mounting frame (32), and the limiting rib (9) abuts against the upper surface of the mounting frame (32).

7. The encoder knob installation structure according to claim 4, characterized in that: The screw (5) comprises a limiting portion (52) screwed with the screw column (8), and a threaded portion (51) is fixedly provided at the other end of the limiting portion (52), and the threaded portion (51) abuts against the inner top wall of the mounting frame (32) at the position of the guide groove (4), and the diameter of the threaded portion (51) is greater than the groove width of the guide groove (4).

8. A projector, characterized in that: It comprises the encoder knob installation structure according to any one of claims 1 to 7, wherein a button (12) is also installed on the housing (1).

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