Electronic endoscope hand wheel

Abstract

The invention discloses a hand wheel of an electronic endoscope. The hand wheel comprises a rotating main body (1) and a locking knob (2) which are fixedly connected, a hand wheel end cover (3) is arranged in a gap between the rotating main body (1) and the locking knob (2); and a friction plate (4) is arranged between the hand wheel end cover (3) and the rotating main body (1) or / and the locking knob (2). The production efficiency can be improved, the assembly precision can be improved, the production difficulty can be reduced, the product consistency can be improved, the waterproof performance of products can be improved, friction damage can be reduced, and noise can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a hand wheel for an electronic endoscope. Background Art

[0002] In the prior art, the handwheel of the electronic endoscope includes a rotating body and a locking knob. After the rotating body and the locking knob are screwed together, the gap between the rotating body and the locking knob fits the handwheel end cover. If the gap between the middle gap and the handwheel end cover is too small, it will be inconvenient for parts processing and manufacturing and it will easily cause friction between the rotating body, the handwheel end cover and the locking knob parts, bringing a high risk of damaging the parts; if the gap between the middle gap is too large, it will cause the gap between the parts to be too large, and the rotating body and the O-ring will have a high risk of axial shaking. Once the O-ring shakes, it will not be able to play a waterproof role. In addition, because the gap between the parts is too large, it will also cause the parts to move up and down axially, resulting in poor operating feel and other effects. Summary of the invention

[0003] In view of the above-mentioned defects of the prior art, the present invention discloses an electronic endoscope handwheel with low parts friction and good waterproofness.

[0004] To achieve the above-mentioned purpose of the invention, the present invention provides an electronic endoscope handwheel, comprising a rotating body and a locking knob fixedly connected; a handwheel end cover is arranged in the gap between the rotating body and the locking knob; a friction plate is arranged between the handwheel end cover and the rotating body and / or the locking knob.

[0005] Preferably, a radial flange extending radially is provided on a side of the rotating body away from the locking knob; a first friction plate mounting groove is provided on the flange; and the friction plate is arranged in the first friction plate mounting groove.

[0006] Preferably, a first axial flange is provided on the radial flange; the first axial flange and the circumferential surface of the rotating body form the first friction plate mounting groove.

[0007] Preferably, the end face of the handwheel end cover close to the locking knob is provided with an axially extending second axial flange; the axial flange and the circumferential surface of the rotating body form a second friction plate mounting groove; the friction plate is arranged in the second friction plate mounting groove.

[0008] Preferably, a protrusion is provided on the friction plate; the flat end surface of the friction plate arranged between the handwheel end cover and the rotating body is fitted with the rotating body, and the protrusion is fitted with the handwheel end cover; the flat end surface of the friction plate arranged between the handwheel end cover and the locking knob is fitted with the handwheel end cover, and the protrusion is fitted with the locking knob.

[0009] Preferably, an O-ring is provided between the rotating body and the handwheel end cover.

[0010] The beneficial effects of the present invention are as follows: the present invention can improve production efficiency, improve assembly accuracy, reduce production difficulty, improve product consistency, and can improve the waterproof performance of the product, reduce friction damage and reduce noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a specific implementation mode of the present invention.

[0012] Figure 2 yes Figure 1 Schematic diagram of the partially enlarged structure in the middle. DETAILED DESCRIPTION

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific manner, and therefore cannot be understood as limiting the present invention. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0014] like Figure 1 and Figure 2 As shown, an electronic endoscope handwheel includes a rotating body 1 and a locking knob 2 fixedly connected by screws, a handwheel end cover 3 is provided in the gap between the rotating body 1 and the locking knob 2, and an O-ring 5 is provided between the rotating body 1 and the handwheel end cover 3.

[0015] In this embodiment, a friction plate 4 is provided between the handwheel end cover 3 and the rotating body 1 and the locking knob 2. In other specific embodiments, a friction plate 4 is provided between the handwheel end cover 3 and one of the rotating body 1 and the locking knob 2 to distinguish the prior art, but the technical effect is slightly worse than that of this embodiment.

[0016] Specifically, the connection method between the friction plate 4 and the rotating body 1 or the hand wheel end cover 3 can be but is not limited to: a. glue connection; b. injection molding; c. clamping connection; d. free state placement, etc.

[0017] A radial flange 1a extending radially is provided on the side of the rotating body 1 away from the locking knob 2, a first axial flange 1c is provided on the radial flange 1a, and the first axial flange 1c and the circumferential surface of the rotating body 1 form a first friction plate installation groove 1b. A friction plate 4 is provided in the first friction plate installation groove 1b.

[0018] The end face of the handwheel end cover 3 close to the locking knob 2 is provided with an axially extending second axial flange 2a, and the axial flange 2a and the circumferential surface of the rotating body 1 form a second friction plate mounting groove 2b, and a friction plate 4 is arranged in the second friction plate mounting groove 2b.

[0019] A protrusion 4a is provided on the friction plate 4, and the flat end surface 4b of the friction plate arranged between the handwheel end cover 3 and the rotating body 1 is in contact with the rotating body 1, and the protrusion is in contact with the handwheel end cover 3; the flat end surface 4b of the friction plate arranged between the handwheel end cover 3 and the locking knob 2 is in contact with the handwheel end cover 3, and the protrusion is in contact with the locking knob 3.

[0020] The shape of the friction plate can be determined according to the concave shape of the rotating body and the handwheel end cover. In this embodiment, the friction plate is in the shape of a sheet as a whole. In this embodiment, in order to reduce the friction surface, a protrusion 4a is provided on the plane of the sheet to reduce the contact area. The main function of the friction plate is to reduce friction, so the material of the contact surface and the parts is very important. The material of the friction plate can be selected from materials with a small friction coefficient, such as POM plastic and Teflon plastic. If a metal material is selected, the surface roughness of the parts can be made above the mirror surface to achieve the purpose of reducing friction.

[0021] In this embodiment, due to the setting of the friction plate, the handwheel end cover 3 is prevented from directly rubbing against the rotating body 1 and the locking knob 2 when the electronic endoscope handwheel is working, thereby reducing the risk of component damage and preventing axial shaking between the rotating body 1 and the O-ring 5, thereby improving the waterproof performance. In addition, due to such a structural design, the gap between the rotating body 1 and the locking knob 2 can be reserved more accurately, thereby making the axial dimensions of each component more accurate, thereby improving assembly accuracy, improving production efficiency, and improving product consistency.

[0022] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. An electronic endoscope hand wheel, comprising a rotating body (1) and a locking knob (2) which are fixedly connected; a hand wheel end cover (3) is provided in the gap between the rotating body (1) and the locking knob (2); wherein: A friction plate (4) is provided between the hand wheel end cover (3) and the rotating body (1) and / or the locking knob (2).

2. The electronic endoscope hand wheel according to claim 1, characterized in that: A radially extending radial flange (1a) is provided on the side of the rotating body (1) away from the locking knob (2); a first friction plate mounting groove (1b) is provided on the flange (1a); and the friction plate (4) is arranged in the first friction plate mounting groove (1b).

3. The electronic endoscope hand wheel as claimed in claim 2, characterized in that: The radial flange (1a) is provided with a first axial flange (1c); the first axial flange (1c) and the circumferential surface of the rotating body (1) form the first friction plate mounting groove (1b).

4. The electronic endoscope hand wheel according to claim 1, characterized in that: The end surface of the handwheel end cover (3) close to the locking knob (2) is provided with an axially extending second axial flange (2a); the axial flange (2a) and the circumferential surface of the rotating body (1) form a second friction plate mounting groove (2b); the friction plate (4) is arranged in the second friction plate mounting groove (2b).

5. The electronic endoscope handwheel according to any one of claims 1 to 4, characterized in that: The friction plate (4) is provided with a protrusion (4a); the flat end surface (4b) of the friction plate arranged between the handwheel end cover (3) and the rotating body (1) is in contact with the rotating body (1), and the protrusion is in contact with the handwheel end cover (3); the flat end surface (4b) of the friction plate arranged between the handwheel end cover (3) and the locking knob (2) is in contact with the handwheel end cover (3), and the protrusion is in contact with the locking knob (3).

6. The electronic endoscope hand wheel according to any one of claims 1 to 4, characterized in that: An O-ring is provided between the rotating body (1) and the hand wheel end cover (3).

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