CN213758141U

CN213758141U - Angle adjusting device and endoscope

Info

Publication number: CN213758141U
Application number: CN202022148104.0U
Authority: CN
Inventors: 郑大宝; 梁凯涛; 廖家成; 黄营
Original assignee: Zhuhai Seesheen Medical Technology Co ltd
Current assignee: Zhuhai Seesheen Medical Technology Co ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-07-23
Anticipated expiration: 2030-09-25

Abstract

The utility model provides an angle adjusting device and endoscope for solving the problem that the medical instrument exists can not adjust annular ring turned angle in succession, the device includes: the side wall of the hub bracket is provided with a first thread; the angle hub is hinged on the hub bracket; a friction pad abutting the angle hub; the friction force adjusting mechanism is connected with the friction gasket; the annular ring is abutted against the friction force adjusting mechanism and is connected with the first thread and used for adjusting the pressure applied to the friction gasket by the friction force adjusting mechanism; and the fixing component is connected with the hub bracket and the annular ring to ensure that the annular ring and the hub bracket are relatively fixed. The utility model discloses an angle adjusting device is through setting up fixed subassembly, couples together wheel hub support and annular ring, makes the relative wheel hub support of annular ring can fix in arbitrary angular position.

Description

Angle adjusting device and endoscope

Technical Field

The utility model relates to a medical instrument, in particular to an angle adjusting device and an endoscope.

Background

In angle adjusting device, through turned angle wheel hub angle regulation, and adopt friction dynamics adjustment mechanism locking angle wheel hub, can make angle wheel hub can not rotate again, through the distance between regulation friction dynamics adjustment mechanism and the angle wheel hub, can control the size of locking dynamics.

Current angle adjusting device, annular ring and wheel hub support threaded connection adjust the distance between friction dynamics adjustment mechanism and the angle wheel hub through rotating the annular ring to adjust the size of locking dynamics. And be provided with a plurality of locating holes on the annular circle, be provided with the reference column on the upper end cover, the reference column inserts the locating hole and spacing annular circle, makes the annular circle can not rotate again. Because the upper end cover is fixed on the hub bracket, if the rotating angle of the annular ring needs to be adjusted, the annular ring at least needs to be rotated to the next positioning hole from the currently inserted positioning hole when being rotated, the rotating angle of the annular ring can only be discretely adjusted, but the rotating angle of the annular ring cannot be continuously adjusted, and the annular ring is inconvenient for workers to rotate to the most proper position.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an angle adjusting device can adjust annular ring pivoted angle in succession, makes the annular ring can rotate arbitrary angle.

According to the utility model discloses an angle adjusting device of first aspect embodiment includes: the side wall of the hub bracket is provided with a first thread; the angle hub is hinged to the hub bracket; a friction pad abutting the angle hub; the friction force adjusting mechanism is connected with the friction gasket; the annular ring is abutted to the friction force adjusting mechanism, is connected with the first thread and is used for adjusting the pressure applied to the friction gasket by the friction force adjusting mechanism; and the fixing component is connected with the hub bracket and the annular ring, so that the annular ring and the hub bracket are relatively fixed.

According to the utility model discloses angle adjusting device and endoscope has following beneficial effect at least: through setting up fixed subassembly, couple together hub support and annular ring, make annular ring relatively hub support can fix in arbitrary angular position.

According to some embodiments of the utility model, the lateral wall of wheel hub support is provided with first screw thread through-hole, fixed subassembly includes holding screw, holding screw connects first screw thread through-hole and butt are in on the lateral wall of annular ring.

According to some embodiments of the invention, the set screw is a socket head set screw.

According to some embodiments of the utility model, the lateral wall of wheel hub support is provided with annular groove, the lateral wall of annular ring is provided with second screw thread through-hole, fixed subassembly includes first bolt and first nut, first bolt passes second screw thread through-hole and annular groove connects first nut.

According to some embodiments of the utility model, the friction dynamics adjustment mechanism includes displacement subassembly and displacement drive subassembly, the displacement subassembly with the friction pad piece is connected, the displacement drive subassembly with the displacement subassembly is connected, the displacement drive subassembly is used for the drive the displacement subassembly is close to or keeps away from the friction pad piece.

According to the utility model discloses a some embodiments, the displacement subassembly includes rim plate and lower rim plate, go up the rim plate with down the rim plate all with the wheel hub support is articulated, down the rim plate with the friction pad piece is connected, it sets up to go up the rim plate on the rim plate down, go up the rim plate with annular circle is connected, go up the rim plate with be provided with the interval regulating block on the opposite face of rim plate down respectively, the displacement drive subassembly is used for the drive go up the rim plate or the rim plate is rotatory down, makes on the last rim plate the interval regulating block with on the rim plate down the interval regulating block overlaps or staggers, makes the rim plate is close to or keeps away from down the friction pad piece.

According to the utility model discloses a some embodiments, the displacement drive subassembly includes eccentric pivot and eccentric connecting rod, eccentric pivot is skew go up the center of rim plate and connect the wheel hub support, eccentric connecting rod with eccentric pivot fixed connection, eccentric connecting rod with go up rim plate swing joint, eccentric pivot can drive eccentric connecting rod is rotatory, thereby drives it is rotatory to go up the rim plate.

According to some embodiments of the utility model, still include the driving medium, the wheel hub support separates the friction gasket with friction dynamics adjustment mechanism, the driving medium passes the wheel hub support is connected respectively the friction gasket with friction dynamics adjustment mechanism.

According to some embodiments of the utility model, still include the stereoplasm circle, the stereoplasm circle sets up on the friction pad piece, the driving medium passes the wheel hub support is connected respectively the stereoplasm circle with friction dynamics adjustment mechanism.

The endoscope according to the second aspect of the present invention includes the aforementioned angle adjusting device.

According to the utility model discloses endoscope, have following technological effect at least: by adopting the angle adjusting device, the rotating angle of the annular ring can be continuously adjusted, so that the annular ring can rotate at any angle and be fixed.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an exploded view of an angle adjusting device according to an embodiment of the present invention;

fig. 2 is a top view of an angle adjustment device according to an embodiment of the present invention;

FIG. 3 is a sectional view taken along line H-H of the angle adjustment apparatus shown in FIG. 2;

fig. 4 is a schematic view of another embodiment of a fixing assembly according to the present invention;

FIG. 5 is a semi-sectional axial view of the fixing assembly shown in FIG. 4;

fig. 6 is a schematic diagram of a displacement assembly of an angle adjustment apparatus according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a displacement assembly of an angle adjustment apparatus according to an embodiment of the present invention;

fig. 8 is a top view isometric view of an upper wheel disc of an angle adjustment device in accordance with an embodiment of the present invention;

fig. 9 is a bottom perspective view of an upper wheel disc of an angle adjustment apparatus according to an embodiment of the present invention;

fig. 10 is a top isometric view of a lower wheel disc of an angle adjustment device in accordance with an embodiment of the present invention;

fig. 11 is a bottom view of the lower wheel of the angle adjusting device of the embodiment of the present invention;

fig. 12 is a bottom perspective view of the displacement driving assembly of the angle adjusting device according to the embodiment of the present invention.

Reference numerals:

a hub bracket 100, an angle adjusting handle 110, a through hole 120, a first thread through hole 130, and an annular groove 140;

an angle hub 200;

a rubbing pad 300;

the displacement assembly 410, an upper wheel disc 411, a sliding groove 411a, a lower wheel disc 412, a limiting hole 412a and a spacing adjusting block 413;

a displacement driving component 420, an eccentric rotating shaft 421, an eccentric connecting rod 422, a sliding block 423 and an angle locking handle 424;

annular ring 500, second threaded through hole 510;

an upper end cap 600;

a transmission member 700;

a hard ring 800;

fixing assembly 900, set screw 910, first bolt 920, first nut 930.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the positional or orientational descriptions, such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "tip", "inner", "outer", "axial", "radial", "circumferential", etc., are the positional or orientational relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, the side wall means the left side wall and/or the right side wall.

In the description of the present invention, "a plurality" means two or more, "more than", "less than", "more than" and the like are understood as excluding the number, "more than", "below", "within" and the like are understood as including the number. If the description of "first" and "second" is used for the purpose of distinguishing technical features, the description is not intended to indicate or imply relative importance or to implicitly indicate the number of the indicated technical features or to implicitly indicate the precedence of the indicated technical features.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. "abutment" is direct connection. "bolted" and "screwed" are equally interchangeable. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

Referring to fig. 1 to 7, an angle adjusting device according to an embodiment of the present invention includes: a hub bracket 100 having a first thread formed on a sidewall thereof; an angle hub 200 hinged to the hub bracket 100; a friction pad 300 abutting against the angle hub 200; the friction force adjusting mechanism is connected with the friction gasket 300; the annular ring 500 is abutted to the friction force adjusting mechanism, and the annular ring 500 is connected with the first thread and used for adjusting the pressure applied to the friction gasket 300 by the friction force adjusting mechanism; the fixing member 900 connects the hub bracket 100 and the annular ring 500, and fixes the annular ring 500 relative to the hub bracket 100.

The hub bracket 100 has a substantially cylindrical outer contour, a substantially H-shaped axial cross-section, and a central hole with a shaft sleeve structure. The angle hub 200 is substantially disc-shaped and is hinged to the hub bracket 100, and after the angle hub 200 is mounted, it can only rotate but cannot generate axial displacement. It is understood that the angle hub 200 can be connected to a movable tube section of the endoscope insertion tube, the rotation angle of the movable tube section can be adjusted by rotating the angle hub 200, and the rotating shaft can be installed in the central hole and the angle adjustment handle 110 can be externally connected, so that the worker can adjust the rotation angle of the angle hub 200 by the angle adjustment handle 110.

The friction pad 300 is in contact with the upper portion of the angle hub 200, and the friction pad 300 is in a ring shape, and can convert the pressure applied to the friction pad 300 into the frictional resistance against the angle hub 200. It can be understood that the greater the pressure applied to the friction pad 300, the greater the resistance applied to the angle hub 200, and the more difficult the angle hub 200 is to rotate, and when the pressure applied to the friction pad 300 reaches a higher value, the angle hub 200 cannot rotate any more, thereby achieving the effect of locking the angle hub 200. It can also be understood that, when the friction pad 300 is located above the angle hub 200, the friction pad 300 and other components that may be connected to the friction pad 300 provide an initial resistance to the angle hub 200 due to the self-received gravity, so that even if the angle adjustment device is in a loose state, the angle hub 200 will not rotate easily due to the slight force such as touching by the clothes, and meanwhile, the angle hub 200 will not be too sensitive, so as to prevent the worker from slightly touching the angle hub and driving the angle hub 200 to rotate greatly, which is not convenient for the angle adjustment of the movable pipe section.

The friction force adjusting mechanism is arranged above the friction gasket 300 and connected with the friction gasket 300, and can apply pressure to the friction gasket 300, so that the rotation difficulty of the angle hub 200 is controlled, and the angle hub 200 is completely locked or loosened. In some embodiments, the friction force adjusting mechanism is indirectly connected to the friction pad 300, a part is directly abutted to the friction pad 300 below the friction force adjusting mechanism, and the friction force adjusting mechanism increases the pressure of the part on the friction pad 300 by making the part generate a downward small displacement, so as to adjust the resistance of the angle hub 200, and it can be understood that the friction force adjusting mechanism and the friction pad 300 can also be directly connected by way of abutment. The final source of the force for generating the downward displacement of the part is generally the operator, and it can be understood that, although the pressing force of the operator can be directly converted into the displacement of the part through the sliding rail and the sliding block, the displacement of the part is relatively small, so that the difference generated when the locking state and the unlocking state are converted is very small, and the observation by the operator is inconvenient, and therefore, the displacement of the part is generally converted into the change of the rotation angle, so that the degree of the change is enlarged, and the operation by the operator is also convenient. In some embodiments, this part is displaced by providing upper wheel 411, lower wheel 412 and spacing adjustment knobs 413 on their opposing faces, and by rotating upper wheel 411 to overlap or misalign spacing adjustment knobs 413. It will be appreciated that it is also possible to displace this part by providing a thread to convert rotation into axial displacement.

An annular ring 500 is arranged above the friction force adjusting mechanism, an external thread is arranged on the outer side wall of the annular ring 500, a first thread in an internal thread form is arranged on the inner side wall of the hub support 100, and the annular ring 500 is in threaded connection with the hub support 100. Because the annular ring 500 abuts the friction force adjusting mechanism which abuts the friction pad 300, the annular ring 500 can provide an additional pressure to the friction pad 300, and the annular ring 500 is in threaded connection with the hub bracket 100, and the annular ring 500 can be rotated to enable the annular ring 500 to generate axial displacement, so that the distance between the annular ring 500 and the friction pad 300 can be adjusted. When the speculum angle locking device is locked, the friction force adjusting mechanism between the annular ring 500 and the friction gasket 300 can be regarded as a rigid part which is respectively abutted against the annular ring 500 and the friction gasket 300, the annular ring 500 generates axial displacement by rotating the annular ring 500, the distance between the annular ring 500 and the friction gasket 300 is adjusted, and therefore the magnitude of additional pressure applied to the friction gasket 300 by the annular ring 500 is adjusted, and finally the locking force of the angle adjusting device is adjusted. It will be appreciated that the annular ring 500 may also be provided with an internal thread and the hub carrier 100 may also be provided with a corresponding external thread.

When the annular ring 500 rotates to a proper position, after long-term use, the annular ring 500 may rotate by itself by a certain angle, which affects the magnitude of the locking force, and at this time, the position of the annular ring 500 needs to be fixed, so that the annular ring 500 can not rotate by itself. A fixing assembly 900 is provided to connect the hub bracket 100 and the annular ring 500 and to fix the annular ring 500 at any angular position with respect to the hub bracket 100. As shown in fig. 1 and 3, in some embodiments, the fixing assembly 900 includes a set screw 910, the ring 500 can be rotated to any angle, when the ring 500 is rotated to a proper position and needs to be fixed, the ring 500 can be fixed by screwing the set screw 910 into the first threaded through hole 130 and tightening the set screw 910 so that the end of the set screw 910 is pressed against the outer side wall of the ring 500, and the ring 500 can not be rotated any more. As shown in fig. 4 and 5, in some embodiments, the fixing assembly 900 includes a first bolt 920 and a first nut 930, the annular ring 500 and the hub bracket 100 are bolted by the fixing assembly 900, the annular ring 500 is fixed with respect to the hub bracket 100, and the annular groove 140 is provided so that the fixing assembly 900 can rotate to any position with the annular ring 500.

It is also understood that the angle boss 200 may be hinged at any height of the boss bracket 100, for example, at the upper end of the boss bracket 100 or at the middle position of the boss bracket 100 or at the lower end of the boss bracket 100, and the angle boss 200, the friction washer 300, the friction force adjusting mechanism, and the annular ring 500 may be sequentially assembled up or down.

Referring to fig. 1 and 3, in some embodiments of the present invention, the sidewall of the hub bracket 100 is provided with a first threaded through hole 130, and the fixing assembly 900 includes a set screw 910, the set screw 910 being connected to the first threaded through hole 130 and abutting on the sidewall of the annular ring 500.

The fixing member 900 includes a set screw 910, and a first threaded through hole 130 is formed in the side wall of the hub bracket 100, the set screw 910 is screwed into the first threaded through hole 130, and the set screw 910 is further screwed so that the tip of the set screw 910 is pressed against the outer side wall of the annular ring 500 to fix the annular ring 500. When the angular position of the annular ring 500 needs to be determined again, the set screw 910 can be rotated reversely, the annular ring 500 is loosened, the annular ring 500 is rotated randomly, the annular angular position is adjusted, and the set screw 910 is screwed after the annular ring 500 determines a proper position. The annular ring 500 is fixed relative to the hub bracket 100 through the set screws 910, so that the processing is simple and convenient, and the assembly is simple.

Referring to fig. 1 and 3, in some embodiments of the present invention, set screw 910 is a socket set screw 910.

The socket set screw 910 can be completely installed in the hub bracket 100 without being exposed, so that the entire angle adjusting apparatus is compactly assembled.

Referring to fig. 4 and 5, in some embodiments of the present invention, the sidewall of the hub bracket 100 is provided with the annular groove 140, the sidewall of the annular ring 500 is provided with the second threaded through hole 510, the fixing assembly 900 includes the first bolt 920 and the first nut 930, and the first bolt 920 passes through the second threaded through hole 510 and the annular groove 140 is connected to the first nut 930.

The fixing assembly 900 includes a first bolt 920 and a first nut 930, the hub bracket 100 defines the annular groove 140, the sidewall of the annular ring 500 defines a second through hole 510, and the second through hole 510 fixes the first bolt 920 to the annular ring 500. The first bolt 920 passes through the second threaded through hole 510 and the annular groove 140 to connect the first nut 930, the annular ring 500 and the hub bracket 100 are connected by the bolt, and then the first nut 930 is tightened to fix the annular ring 500 relative to the hub bracket 100. When the angular position of the annular ring 500 needs to be determined again, the first nut 930 may be rotated reversely, the annular ring 500 is loosened, the annular ring 500 is rotated arbitrarily, the annular angular position is adjusted, and due to the annular groove 140, the first bolt 920 may also be rotated to an arbitrary position along with the annular ring 500, and the first nut 930 is screwed after the annular ring 500 determines a suitable position.

Referring to fig. 1 to 7, in some embodiments of the present invention, the friction force adjusting mechanism includes a displacement assembly 410 and a displacement driving assembly 420, the displacement assembly 410 is connected to the friction pad 300, the displacement driving assembly 420 is connected to the displacement assembly 410, and the displacement driving assembly 420 is used for driving the displacement assembly 410 to approach or be away from the friction pad 300.

In some embodiments, the friction force adjusting mechanism generates a pressure on the friction pad 300 by displacing the component connected to the friction pad 300 downward, so the friction force adjusting mechanism includes a displacement component 410 and a displacement driving component 420, the displacement component 410 is connected to the friction pad 300, the displacement driving component 420 is connected to the displacement component 410, and the displacement driving component 420 is used for driving the displacement component 410 to approach or move away from the friction pad 300 to control the amount of the pressure applied by the displacement component 410 on the friction pad 300. In some embodiments, the connection of the displacement assembly 410 and the friction pad 300 is an indirect connection, it being understood that the displacement assembly 410 and the friction pad 300 may also be directly connected by way of an abutment. In some embodiments, displacement assembly 410 is displaced by providing upper wheel 411, lower wheel 412, and spacing adjustment knobs 413 on their opposing faces, and displacement drive assembly 420 drives upper wheel 411 to overlap or misalign spacing adjustment knobs 413. It will be appreciated that the displacement assembly 410 may also be displaced by providing threads to translate rotation into axial displacement; it is also understood that the displacement assembly 410 may be configured as a slide-rail slider or other type of assembly.

Referring to fig. 3 to 11, in some embodiments of the present invention, displacement assembly 410 includes upper wheel disc 411 and lower wheel disc 412, upper wheel disc 411 and lower wheel disc 412 are all articulated with hub bracket 100, lower wheel disc 412 is connected with friction pad 300, upper wheel disc 411 is disposed on lower wheel disc 412, upper wheel disc 411 is connected with annular ring 500, be provided with interval regulating block 413 on the opposite face of upper wheel disc 411 and lower wheel disc 412 respectively, displacement drive assembly 420 is used for driving upper wheel disc 411 or lower wheel disc 412 to rotate, make interval regulating block 413 on upper wheel disc 411 and interval regulating block 413 on lower wheel disc 412 overlap or stagger, make lower wheel disc 412 be close to or keep away from friction pad 300.

Go up rim plate 411 and lower rim plate 412 and all articulate with wheel hub support 100, go up rim plate 411 and annular circle 500 butt simultaneously, so rim plate 411 can rotate and receive annular circle 500 spacing, can not produce ascending axial displacement. Lower disc 412 is coupled to friction pad 300 and may apply pressure to friction pad 300 to lock angular hub 200. In some embodiments, the lower disc 412 and the friction pad 300 are indirectly connected, and it is understood that the lower disc 412 and the friction pad 300 may be directly connected by abutting. The opposite faces of the upper wheel disc 411 and the lower wheel disc 412 are respectively provided with a matched spacing adjusting block 413, the spacing adjusting blocks 413 on the upper wheel disc 411 and the lower wheel disc 412 are arranged at intervals, and when the upper wheel disc 411 rotates and the lower wheel disc 412 does not rotate, the spacing adjusting blocks 413 on the upper wheel disc 411 and the spacing adjusting blocks 413 on the lower wheel disc 412 can be overlapped or staggered. As shown in fig. 7, when the interval-adjusting blocks 413 are overlapped, the upper disc 411 and the lower disc 412 are separated from each other by the height distance of the two interval-adjusting blocks 413, and because the upper disc 411 can rotate and is limited by the annular ring 500 and cannot generate upward axial displacement, the lower disc 412 generates downward displacement, thereby applying pressure to the friction pad 300 to lock the angle hub 200; as shown in fig. 6, since the distance adjusting blocks 413 of the upper wheel disc 411 and the lower wheel disc 412 are arranged at intervals, when the distance adjusting blocks 413 are staggered, the distance adjusting blocks 413 of the upper wheel disc 411 and the distance adjusting blocks 413 of the lower wheel disc 412 slide to intervals between each other, so that the upper wheel disc 411 and the lower wheel disc 412 are only separated by a distance of the height of one distance adjusting block 413, and because the upper wheel disc 411 can rotate and is limited by the annular ring 500, an upward axial displacement cannot be generated, the lower wheel disc 412 generates an upward displacement, and thus the pressure applied to the friction pad 300 is reduced, so that the angle wheel hub 200 is released. The overlapping and staggering of pitch adjustment segments 413 is accomplished by rotating upper wheel 411. in some embodiments, pitch adjustment segments 413 are generally trapezoidal in shape, facilitating that pitch adjustment segments 413 may slide on each other's surface during rotation of upper wheel 411, thereby staggering or overlapping.

Referring to fig. 1, 3, 8 and 12, in some embodiments of the present invention, the displacement driving assembly 420 includes an eccentric rotating shaft 421 and an eccentric connecting rod 422, the eccentric rotating shaft 421 deviates from the center of the upper wheel disc 411 and is connected to the hub bracket 100, the eccentric connecting rod 422 is fixedly connected to the eccentric rotating shaft 421, the eccentric connecting rod 422 is movably connected to the upper wheel disc 411, and the eccentric rotating shaft 421 can drive the eccentric connecting rod 422 to rotate, so as to drive the upper wheel disc 411 to rotate.

The eccentric shaft 421 is connected to the hub bracket 100, and is fixed to the hub bracket 100 so as not to rotate relative to the rotatable upper disc 411. In some embodiments, the upper cover 600 is fixed to the hub bracket 100, and the eccentric shaft 421 is actually mounted on the upper cover 600, and the eccentric shaft 421 is indirectly connected to the hub bracket 100. The eccentric shaft 421 is rotatably and detachably coupled to the upper cover 600. The eccentric link 422 is fixedly connected to the eccentric rotating shaft 421, which means that the eccentric link 422 is not hinged to the eccentric rotating shaft 421, and the eccentric link 422 rotates along with the rotation of the eccentric rotating shaft 421, but the eccentric link 422 and the eccentric rotating shaft 421 may be detachably connected, such as a snap connection or a screw connection. The eccentric link 422 is movably connected to the upper wheel 411, which means that one of the eccentric link 422 and the upper wheel 411 is provided with a sliding slot 411a, and the other is provided with a sliding block 423, and the sliding slot 411a is not completely located on a path of the sliding block 423 rotating around the eccentric rotation shaft 421, and the sliding block 423 is located in the sliding slot 411a and can slide along the sliding slot 411 a. Therefore, when the eccentric link 422 is rotated by the rotation of the eccentric shaft 421 and finally the sliding block 423 is rotated, the sliding block 423 slides in the sliding groove 411a, and the sliding groove 411a is not completely located on a path where the sliding block 423 rotates around the eccentric shaft 421, and finally the upper wheel disc 411 is driven to rotate, thereby controlling the switching between the locking state and the releasing state of the angle adjusting device. In some embodiments, a sliding groove 411a is formed on the upper wheel 411, and the sliding groove 411a extends in a radial direction of the upper wheel 411, and a sliding block 423 is provided on the eccentric link 422, and the sliding block 423 is integrally formed with the eccentric link 422. It is understood that the displacement driving assembly 420 may also drive the displacement assembly 410 to rotate in a gear transmission manner as in the patent document shown in CN 111067469A. Compared with the above patent documents, the rotation mode in the embodiment has a simple structure, and the parts are convenient to produce and assemble.

Referring to fig. 1 to 3, in some embodiments of the present invention, the displacement driving assembly 420 further includes an angle locking handle 424, and the angle locking handle 424 is connected to the eccentric rotation shaft 421.

The angle locking handle 424 is arranged, so that the worker can conveniently lock and unlock the angle adjusting device.

Referring to fig. 1 to 3, in some embodiments of the present invention, the present invention further includes an upper end cap 600, the upper end cap 600 is disposed on the hub bracket 100, and the upper end cap 600 is connected to the annular ring 500.

The upper end cap 600 is a part of the endoscope housing, is fixedly connected to the hub bracket 100, and cannot easily rotate and translate and loosen after being installed. And the upper end cover 600 is connected with the annular ring 500, plays certain limiting role to the annular ring 500, makes the annular ring 500 not rotate after adjusting the locking force, and guarantees that the locking force can not change in the use process. It is understood that the upper end cap 600 can also be a base for mounting other components besides the hub bracket 100, for example, the eccentric shaft 421 can be mounted on the hub bracket 100 and also on the upper end cap 600, and in some embodiments, the eccentric shaft 421 is hinged on the upper end cap 600, which facilitates the assembly of the endoscope. The connection form of the upper end cap 600 and the annular ring 500 may be a bolt connection, a snap connection, or the like.

Referring to fig. 1, 3 and 11, in some embodiments of the present invention, the present invention further includes a transmission member 700, the hub bracket 100 separates the friction pad 300 and the friction force adjusting mechanism, and the transmission member 700 penetrates the hub bracket 100 and is connected to the friction pad 300 and the friction force adjusting mechanism, respectively.

Hub support 100 separates friction pad 300 and friction dynamics adjustment mechanism for friction pad 300 and friction dynamics adjustment mechanism are in hub support 100's both sides, compare in the mode of homonymy installation, can reduce product structure height, can utilize product space more rationally, reduce the product volume. Be provided with driving medium 700, and driving medium 700 passes hub support 100 and butts friction pad piece 300 and friction dynamics adjustment mechanism respectively, and the setting of driving medium 700 can transmit friction dynamics adjustment mechanism's displacement to friction pad piece 300 through driving medium 700 on to produce pressure, locking angle wheel hub 200 to friction pad piece 300. It can be understood that the transmission member 700 has a certain limiting effect on the lower wheel disc 412, and since the transmission member 700 is located in the through hole 120 of the hub bracket 100, the transmission member 700 can only generate axial displacement and cannot rotate around the hub bracket 100, and the transmission member 700 is simultaneously inserted into the limiting hole 412a of the lower wheel disc 412, so that the lower wheel disc 412 is limited by the transmission member 700, cannot rotate, and can only generate axial displacement. It can also be appreciated that the transmission member 700 and the hub bracket 100 separate the friction pad 300 and the friction force adjustment mechanism so that the rotation of the friction pad 300 does not adversely affect the friction force adjustment mechanism and drive the friction force adjustment mechanism to rotate.

Referring to fig. 1 and 3, in some embodiments of the present invention, the friction pad further includes a hard ring 800, the hard ring 800 is disposed on the friction pad 300, and the transmission member 700 passes through the hub bracket 100 and is connected to the hard ring 800 and the friction force adjusting mechanism, respectively.

Because the friction pad 300 is generally softer and is easily deformed by local pressure without increasing too much frictional resistance, and the transmission member 700 is a cylinder and has a smaller contact area with the friction pad 300, the hard ring 800 needs to be arranged to disperse the force applied to the friction pad 300, so that the friction pad 300 is uniformly stressed, and the received pressure is better converted into the frictional resistance to the angle hub 200. Set up simultaneously and enclose 800, also play certain limiting displacement to friction pad 300, make friction pad 300 can not the surface of landing angle wheel hub 200 to circle 800 still has certain guard action, prevents the upper surface friction and wear of friction pad 300. The hard ring 800 may be a steel ring, an iron ring, a glass ring, a plastic ring, etc., and compared with the friction pad 300, the hard ring 800 is made of a material with higher hardness and smaller deformation after being stressed.

Referring to fig. 1 to 3, an endoscope according to a second aspect of the present invention includes the aforementioned angle adjustment device.

By adopting the angle adjusting device, the endoscope can continuously adjust the rotating angle of the annular ring 500, so that the annular ring 500 can rotate at any angle and be fixed.

The operation of the angle adjustment device according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 12 as a specific embodiment. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.

The utility model discloses an angle adjusting device mainly has the principle of locking principle and regulation locking dynamics. The locking principle is as follows: the upper wheel disc 411 abuts against the annular ring 500, cannot generate upward axial displacement, and can only drive the upper wheel disc 411 to rotate through the angle locking handle 424, the eccentric rotating shaft 421 and the eccentric connecting rod 422; when the upper wheel disc 411 rotates, the spacing adjusting blocks 413 between the upper wheel disc 411 and the lower wheel disc 412 slide to an overlapped state in a staggered manner, at this time, the spacing between the upper wheel disc 411 and the lower wheel disc 412 is increased to the distance of the heights of the two spacing adjusting blocks 413 from the distance of the height of one spacing adjusting block 413, and the upper wheel disc 411 cannot move upwards, so that only the lower wheel disc 412 can move downwards; the lower wheel disc 412 abuts against the transmission member 700 below, so that the lower wheel disc 412 moves downwards to drive the transmission member 700 to move downwards, and it is additionally stated that the arrangement of the transmission member 700 limits the lower wheel disc 412 to be incapable of rotating; because the transmission member 700 abuts against the lower hard ring 800, the transmission member 700 moves downwards to drive the hard ring 800 to move downwards; the lower part of the hard ring 800 is abutted with the friction gasket 300, the lower part of the friction gasket 300 is abutted with the angle hub 200, and the angle hub 200 cannot generate axial displacement and only can rotate, so that the angle hub 200 cannot move downwards; at this time, the hard ring 800 above the friction pad 300 moves downward, but the angle hub 200 below the friction pad 300 cannot move downward, so the friction pad 300 is subjected to the pressure exerted by the downward movement of the hard ring 800; the pressure on the friction pad 300 is increased, the frictional resistance to the angle hub 200 below the friction pad 300 is also increased, and when the resistance reaches a maximum value, the angle hub 200 cannot rotate, so that the locking effect is achieved. The principle of adjusting the locking force is described on the basis of the locking principle: the space between the annular ring 500 and the angle hub 200 is the space for generating axial displacement of the whole device, while the distance of the height of a spacing adjusting block 413 added for operating the angle locking handle 424 is constant, and when the annular ring 500 generates axial displacement through threads, the distance between the annular ring 500 and the angle hub 200 is changed; when the distance between the annular ring 500 and the angle hub 200 is increased, the locking force is decreased; the locking force becomes greater as the distance between the annular ring 500 and the angular hub 200 becomes smaller. The principle of adjusting the locking force is further described in combination with the practical situation on the basis of the locking principle: in the actual assembly of the angle adjusting device, two situations may occur — the first situation, when the angle adjusting device is loosened, there is a certain gap between the annular ring 500 and the upper wheel disc 411, at this time, the upper wheel disc 411 can move upwards, and cannot move upwards until abutting against the annular ring 500, so that the distance that the hard ring 800 moves downwards when finally locked is the distance that the height of the spacing adjusting block 413 minus the distance that the upper wheel disc 411 can move upwards, because the larger the distance that the hard ring 800 moves downwards, the larger the locking force is, and the distance that the upper wheel disc 411 can move upwards is the gap distance between the annular ring 500 and the upper wheel disc 411, so when the annular ring 500 is rotated and the annular ring 500 moves downwards, the gap distance between the annular ring 500 and the upper wheel disc 411 becomes smaller, the locking force becomes larger, and vice versa; in the second case, when the angle adjusting device is released, the annular ring 500 abuts against the upper wheel disc 411, at this time, the upper wheel disc 411 cannot move upwards, at this time, the assembly between the annular ring 500 and the friction pad 300 can be regarded as a whole rigid member, the annular ring 500 can directly apply an initial pressure to the friction pad 300, the initial pressure increases the locking force, and when the annular ring 500 and the annular ring 500 are rotated and move downwards, the initial pressure becomes larger, so that the locking force at the time of final locking also becomes larger correspondingly, and vice versa.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. An angle adjusting apparatus, comprising:

the side wall of the hub bracket is provided with a first thread;

the angle hub is hinged to the hub bracket;

a friction pad abutting the angle hub;

the friction force adjusting mechanism is connected with the friction gasket;

the annular ring is abutted to the friction force adjusting mechanism, is connected with the first thread and is used for adjusting the pressure applied to the friction gasket by the friction force adjusting mechanism;

and the fixing component is connected with the hub bracket and the annular ring, so that the annular ring and the hub bracket are relatively fixed.

2. The angular adjustment device of claim 1, wherein the sidewall of the hub bracket is provided with a first threaded through hole, and the fixing assembly comprises a set screw connected to the first threaded through hole and abutting against the sidewall of the annular ring.

3. The angle adjustment apparatus of claim 2, wherein the set screw is a socket head set screw.

4. The angle adjustment apparatus of claim 1, wherein a side wall of the hub bracket is provided with an annular groove, a side wall of the annular ring is provided with a second threaded through hole, and the fixing assembly includes a first bolt and a first nut, the first bolt passing through the second threaded through hole and the annular groove to connect the first nut.

5. The angle adjusting device of claim 1, wherein the friction force adjusting mechanism comprises a displacement assembly and a displacement driving assembly, the displacement assembly is connected with the friction pad, the displacement driving assembly is connected with the displacement assembly, and the displacement driving assembly is used for driving the displacement assembly to approach or depart from the friction pad.

6. The angle adjusting device of claim 5, wherein the displacement assembly comprises an upper wheel disc and a lower wheel disc, the upper wheel disc and the lower wheel disc are hinged to the hub bracket, the lower wheel disc is connected to the friction pad, the upper wheel disc is arranged on the lower wheel disc, the upper wheel disc is connected to the annular ring, spacing adjusting blocks are respectively arranged on opposite surfaces of the upper wheel disc and the lower wheel disc, and the displacement driving assembly is used for driving the upper wheel disc or the lower wheel disc to rotate, so that the spacing adjusting blocks on the upper wheel disc and the spacing adjusting blocks on the lower wheel disc are overlapped or staggered, and the lower wheel disc is close to or far away from the friction pad.

7. The angle adjusting device of claim 6, wherein the displacement driving assembly comprises an eccentric rotating shaft and an eccentric connecting rod, the eccentric rotating shaft is deviated from the center of the upper wheel disc and is connected with the hub bracket, the eccentric connecting rod is fixedly connected with the eccentric rotating shaft, the eccentric connecting rod is movably connected with the upper wheel disc, and the eccentric rotating shaft can drive the eccentric connecting rod to rotate so as to drive the upper wheel disc to rotate.

8. The angle adjustment apparatus of claim 1, further comprising a transmission member, wherein the hub bracket separates the friction pad and the friction force adjustment mechanism, and the transmission member passes through the hub bracket to connect the friction pad and the friction force adjustment mechanism, respectively.

9. The angle adjusting device of claim 8, further comprising a hard ring disposed on the friction pad, wherein the transmission member passes through the hub bracket to connect the hard ring and the friction force adjusting mechanism, respectively.

10. An endoscope, characterized in that it comprises an angle adjustment device according to any one of claims 1 to 9.