Steering endoscope convenient for accurate tightness adjustment

Abstract

A steering endoscope facilitating accurate tightness adjustment overcomes the technical defects of tightness adjustment of a pull wire of an existing industrial endoscope and comprises a camera, a steering structure, a conveying protection sleeve and an adjustment control mechanism. A steering adjusting wheel set is embedded in the front end of a handle of the adjusting control mechanism; the steering adjusting wheel set comprises a left winding wheel, a right winding wheel and a shifting wheel. Each of the left reel and the right reel comprises a clamping mounting part and a reel part arranged on the side surface of the clamping mounting part; the first pull wire and the second pull wire are respectively wound on the reel parts of the left reel and the right reel in opposite directions; clamping parts are arranged on the left side and the right side of the shifting wheel respectively; the left reel, the right reel and the dial wheel are combined to form a steering adjusting wheel set which is then movably connected with a shell of the adjusting control mechanism, and the dial wheel is exposed out of the shell of the adjusting control mechanism. When the tightness needs to be adjusted, the tightness can be quickly and reliably adjusted by switching the clamping rotation angles of the left winding wheel, the right winding wheel and the shifting wheel, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial endoscopes. Background Art

[0002] Industrial endoscopes are mainly used for the inspection and repair of automobiles, aero-engines, pipelines, and mechanical parts. Without disassembling or damaging the equipment, the camera can be extended into a narrow space through a transmission protection sleeve to achieve non-destructive detection. To achieve camera steering shooting in a narrow space, generally, the steering structure is deflected by controlling two or more traction wires. The traction wire is similar to the brake wire of a bicycle, including a guiding sleeve and a wire body disposed within the guiding sleeve. When the wire body is pulled to move relative to the guiding sleeve, the deflection control of the steering structure is realized. After the steering structure wears and the external force is too large, causing the wire body to become loose, the wire body between the adjustment control mechanism and the steering structure will become slack, making it impossible to flexibly control the camera steering, or causing the camera to be in a deflected state under normal conditions. Currently, the general solution is to add an adjustment sleeve connected by threads to the traction wire guiding sleeve fixing bracket of the adjustment control mechanism, which is equivalent to achieving the effect of lengthening or shortening the traction wire guiding sleeve through the adjustment sleeve, thereby realizing the adjustment of the traction wire tightness. However, the current adjustment method has a relatively small adjustable range and occupies a large adjustment space. Summary of the Utility Model

[0003] In summary, the purpose of the present utility model is to solve the technical deficiencies existing in the adjustment of the traction wire tightness of existing industrial endoscopes, and to propose a steering endoscope that is convenient for precise tightness adjustment.

[0004] To solve the technical deficiencies proposed by the present utility model, the technical solution adopted is as follows:

[0005] A steering endoscope facilitating precise tightening and loosening adjustment, comprising a camera, a steering structure, a transmission protection sleeve, and an adjustment control mechanism; the steering structure is arranged at the front end of the transmission protection sleeve, and the front fixing seat of the steering structure is fixedly connected to the camera; the rear end of the transmission protection sleeve is connected to the adjustment control mechanism; the transmission line of the camera and the first traction line and the second traction line of the steering structure are introduced into the adjustment control mechanism through the transmission protection sleeve; a traction line guide sleeve fixing frame is fixedly installed in the adjustment control mechanism, and the guide sleeves of the first traction line and the second traction line are respectively abutted against the traction line guide sleeve fixing frame; it is characterized in that: a steering adjustment wheel set is embedded and installed at the front end of the handle of the adjustment control mechanism; the steering adjustment wheel set includes a left winding wheel, a right winding wheel, and a dial; both the left winding wheel and the right winding wheel include a clamping installation part and a winding wheel part arranged on the side of the clamping installation part, and the line body ends of the first traction line and the second traction line are respectively connected to the left winding wheel and the right winding wheel, and are respectively wound around the winding wheel parts of the left winding wheel and the right winding wheel in opposite directions; clamping parts that are matched and clamped with the clamping installation parts of the left winding wheel and the right winding wheel are respectively arranged on the left and right sides of the dial; the steering adjustment wheel set composed of the left winding wheel, the right winding wheel, and the dial is movably connected to the housing of the adjustment control mechanism, and the dial is exposed outside the housing of the adjustment control mechanism.

[0006] The technical features further limiting the present invention include:

[0007] A plurality of positioning grooves distributed in a circumferential manner are arranged on the side surface of the dial, and a spring positioning bead assembly corresponding to the positioning grooves is fixedly installed in the housing of the adjustment control mechanism.

[0008] A plurality of positioning grooves distributed in a circumferential manner are arranged on both the left and right side surfaces of the dial, and spring positioning bead assemblies corresponding to the positioning grooves on the left and right side surfaces are fixedly installed in the housing of the adjustment control mechanism.

[0009] The clamping installation part is a gear structure, a regular polygon structure, or an end face clamping transmission structure.

[0010] The steering adjustment wheel set is movably connected to the housing of the adjustment control mechanism through an independent structure support shaft, and the left winding wheel and the right winding wheel are sleeved with the support shaft with a clearance fit; or the steering adjustment wheel set is movably connected to the housing of the adjustment control mechanism through a hollow shaft with an integral structure on both sides of the dial, or the steering adjustment wheel set is movably connected to the housing of the adjustment control mechanism through a segmented support shaft integrally extending from the sides of the left winding wheel and the right winding wheel respectively.

[0011] Fixing blocks are respectively arranged at the line body ends of the first traction line and the second traction line, and fixing block chutes for embedding and fixing the corresponding fixing blocks are respectively arranged on the inner walls of the gear installation parts of the left winding wheel and the right winding wheel.

[0012] The wheel surface of the described dial wheel is provided with an anti-slip rubber sleeve.

[0013] The described support shaft is located inside the front end of the handle of the adjustment control mechanism and is vertically arranged with the handle.

[0014] The described steering structure includes several steering pieces. Each steering piece is connected in series by the wire bodies of the first traction wire and the second traction wire. Between the through holes of the wire bodies of the first traction wire and the second traction wire where each steering piece is located, there is a support protrusion, and on the back of the support protrusion, there is a positioning groove with a depth lower than that of the support protrusion.

[0015] A spring is sleeved at the rear end of the described transmission protection sleeve.

[0016] The beneficial effects of the present utility model are as follows: By separately and independently rotating the left wire winding wheel and the right wire winding wheel, after the wire bodies in the first traction wire and the second traction wire are tensioned, they are respectively inserted and clamped and fixed on the dial wheel. When tightness adjustment is required, it can be quickly and reliably achieved by switching the clamping and rotating angles of the left wire winding wheel, the right wire winding wheel and the dial wheel, and it is convenient to use. Description of the Drawings

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is an internal structural schematic diagram of the adjustment control mechanism of the present utility model;

[0019] Figure 3 is Figure 2 a disassembled structural schematic diagram of;

[0020] Figure 4 is an enlarged structural schematic diagram of the dial wheel and the right wire winding wheel part of the present utility model;

[0021] Figure 5 is an enlarged structural schematic diagram of the left wire winding wheel part of the present utility model;

[0022] Figure 6 is an enlarged structural schematic diagram of the steering piece of the steering structure of the present utility model. Detailed Embodiments

[0023] The following further describes the structure of the present utility model in conjunction with the attached drawings and the preferred specific embodiments of the present utility model.

[0024] Refer to Figures 1 to 5As shown in the figure, a steering endoscope that is convenient for precise tightening and loosening adjustment disclosed by the present utility model includes a camera 1, a steering structure 2, a transmission protection sleeve 3, and an adjustment control mechanism 4; the steering structure 2 is arranged at the front end of the transmission protection sleeve 3, and the front fixing seat of the steering structure 2 is fixedly connected to the camera 1; the rear end of the transmission protection sleeve 3 is connected to the adjustment control mechanism 4; a transmission line for transmitting the signal collected by the camera 1 and a first traction line 21 and a second traction line 22 for controlling the steering of the steering structure 2 are introduced into the adjustment control mechanism 4 through the transmission protection sleeve 3; generally, the adjustment control mechanism 4 includes a handle 41, a display screen 42 for displaying the signal collected by the camera 1, and a control component for controlling the steering structure 2 to drive the camera 1 to turn through the first traction line 21 and the second traction line 22.

[0025] In the present utility model, the control component is composed of a traction line guide sleeve fixing frame 431 fixedly installed in the adjustment control mechanism 4 and a steering adjustment wheel set; the traction line guide sleeve fixing frame 431 is used to abut against the end of the guide sleeve of the first traction line 21 and the second traction line 22, so that the steering adjustment wheel set can control the wire body of the first traction line 21 and the second traction line 22 to move relative to the guide sleeve, so as to realize the deflection control of the steering structure 2.

[0026] As Figure 2 and Figure 6 As shown in the figure, the specific structure of the steering structure 2 includes a plurality of steering pieces 23, a first traction line 21, a second traction line 22, a front fixing seat, and a rear fixing seat; the first traction line 21 and the second traction line 22 are respectively connected to the front fixing seat after passing through the corresponding through holes on the rear fixing seat and each steering piece 23 in sequence, and the rear fixing seat and a plurality of steering pieces 23 are movably connected in series into a row through the side-by-side first traction line 21 and second traction line 22; in order to prevent sundries from entering the gap between the steering pieces 23, a flexible outer sleeve is sleeved outside the row of steering pieces 23 between the front fixing seat and the rear fixing seat. Each steering piece 23 is provided with a support protrusion 231 between the through holes of the wire bodies of the first traction line 21 and the second traction line 22, and a positioning groove 232 with a depth lower than that of the support protrusion is arranged on the back of the support protrusion 231. By tightening one of the wire bodies, the gaps between the corresponding steering pieces 23 on one side are correspondingly reduced, achieving the effect of deflecting the steering structure 2. The cooperation between the positioning groove 232 and the support protrusion 231 can also ensure that adjacent steering pieces 23 do not generate skew.

[0027] The steering adjustment wheel set of the present utility model is preferably embedded and installed at the front end of the handle 41 of the adjustment control mechanism. The steering adjustment wheel set includes a left winding wheel 432, a right winding wheel 433 and a dial wheel 434; both the left winding wheel 432 and the right winding wheel 433 include a clamping installation part and a winding wheel part arranged on the side of the clamping installation part. The wire body 20 ends of the first traction wire 21 and the second traction wire 22 are respectively connected to the left winding wheel 432 and the right winding wheel 433, and are respectively wound around the winding wheel parts of the left winding wheel 432 and the right winding wheel 433 in opposite directions; clamping parts that cooperate with the clamping installation parts of the left winding wheel and the right winding wheel are respectively arranged on the left and right sides of the dial wheel 434. In the specific implementation process, the clamping installation part can be a gear structure, a regular polygon structure or an end face clamping transmission structure. In the attached drawings of this embodiment, the clamping installation part is taken as an example of a gear structure for illustration, and the corresponding clamping part of the dial wheel 434 is an annular internal tooth arranged on the dial wheel 434. The gear structures of the left winding wheel 432 and the right winding wheel 433 are respectively embedded and clamped and fixed on both sides of the annular internal tooth of the dial wheel 434. The principle of the regular polygon structure or the end face clamping transmission structure as the clamping installation part is the same as the principle of the gear structure cooperating with the annular internal tooth. The more sides the regular polygon structure has, the smaller the rotation adjustment angle unit of the left winding wheel 432, the right winding wheel 433 and the dial wheel 434, and the higher the adjustment accuracy; the end face clamping transmission structure means that the left winding wheel 432, the right winding wheel 433 and the rotation end face of the dial wheel 434 are clamped and connected through the cooperation of annularly distributed raised clamping blocks and annularly distributed grooves to achieve synchronous rotation.

[0028] In the specific implementation process, the structure of the steering adjustment wheel set rotating and supported in the housing of the adjustment control mechanism can adopt various structures. For example: it is movably connected to the housing of the adjustment control mechanism through an independent structural support shaft 435, and the left winding wheel 432 and the right winding wheel 433 are sleeved with the support shaft 435 with a clearance fit; or the steering adjustment wheel set is movably connected to the housing of the adjustment control mechanism through the hollow shafts of the integrated structure on both sides of the dial wheel 434. The hollow shafts support the dial wheel 434 to enable the dial wheel 434 to rotate around the shaft. The left winding wheel 432 and the right winding wheel 433 are installed in the hollow shafts to realize the synchronous rotation of the left winding wheel 432, the right winding wheel 433 and the dial wheel 434; or the steering adjustment wheel set is movably connected to the housing of the adjustment control mechanism through the segmented support shafts respectively integrally extended from the sides of the left winding wheel 432 and the right winding wheel 433.

[0029] The dial wheel 434 is exposed outside the housing of the adjustment control mechanism. That is, when the user holds the handle 41 with the hand and rotates the dial wheel 434 with the thumb, one of the two wire bodies 20 is wound up from the corresponding wire winding wheel part, and the other wire body is released from the corresponding wire winding wheel part, and the steering structure 2 deflects towards the side of the wire body being wound up. The support shaft 435 or the hollow shaft is preferably located inside the front end of the handle 41 of the adjustment control mechanism and is perpendicular to the handle 41, facilitating the rotation of the dial wheel 434 by the thumb.

[0030] Since the dial wheel 434 and the left wire winding wheel 432 and the right wire winding wheel 433 adopt a coaxial tooth engagement combination structure, compared with the integral structure, the utility model can conveniently independently control the rotation angle of one of the wire winding wheels so that when adjusted to the normal state, the steering structure 2 can be in a straight state and both wire bodies 20 are in a tensioned state. The specific adjustment operation method: After tensioning the wire bodies in the first traction wire 21 and the second traction wire 22, the left wire winding wheel 432 and the right wire winding wheel 433 are respectively embedded and clamped and fixed on the dial wheel 434. When the tightness adjustment is required, it can be quickly and reliably achieved by switching the clamping rotation angles of the left wire winding wheel 432, the right wire winding wheel 433 and the dial wheel 434, which is convenient to use.

[0031] In order to enable the steering of the operation control camera 1 of the utility model to maintain the steering state without external force, a plurality of positioning grooves 4341 distributed in a circumferential manner are provided on the side surface of the dial wheel 434, and a spring positioning bead assembly 4342 corresponding to the positioning grooves 4341 is fixedly installed in the housing of the adjustment control mechanism. The spring positioning bead assembly 4342 is composed of a spring and a steel bead at the end of the position spring. The spring positioning bead assembly 4342 elastically abuts in one of the positioning grooves 4341 and elastically prevents the free rotation of the dial wheel 434.

[0032] In order to better prevent the free rotation of the dial wheel 434, a plurality of positioning grooves distributed in a circumferential manner are provided on both the left and right side surfaces of the dial wheel 434, and spring positioning bead assemblies corresponding to the positioning grooves on the left and right side surfaces are fixedly installed in the housing of the adjustment control mechanism.

[0033] The left wire winding wheel 432 and the right wire winding wheel 433 are sleeved with a clearance fit on the support shaft 435. The steering adjustment wheel group is supported and connected by the left wire winding wheel 432, the right wire winding wheel 433 and the support shaft 435. Compared with the support connection of the dial wheel 434 alone with the support shaft 435, the utility model has balanced force. The wheel surface of the dial wheel 434 is provided with an anti-slip rubber sleeve for convenient operation.

[0034] Refer to Figure 5As shown, fixing blocks 201 are respectively provided at the end portions of the wire bodies 20 of the first traction wire and the second traction wire. Fixing block slots 4321 for embedding and fixing the corresponding fixing blocks 201 are respectively provided on the inner walls of the gear mounting portions of the left wire winding wheel 432 and the right wire winding wheel. After the fixing blocks 201 are embedded in the fixing block slots 4321 and the left wire winding wheel 432 and the right wire winding wheel are installed in the dial wheel 434, the fixing blocks 201 are not easily detached without the need for screws or glue.

[0035] In order to protect the connection between the transmission protection sleeve 3 and the adjustment control mechanism 4 from being broken or damaged, a spring 31 is sleeved at the rear end of the transmission protection sleeve 3.

Claims

1. A steering endoscope that is convenient for precise tension adjustment, comprising a camera, a steering structure, a transmission protection sleeve and an adjustment control mechanism; the steering structure is arranged at the front end of the transmission protection sleeve, and the front fixing seat of the steering structure is fixedly connected to the camera; the rear end of the transmission protection sleeve is connected to the adjustment control mechanism; the transmission line of the camera and the first traction line and the second traction line of the steering structure are introduced into the adjustment control mechanism through the transmission protection sleeve; a fixedly installed traction line guide sleeve fixing frame is provided in the adjustment control mechanism, and the guide sleeves of the first traction line and the second traction line are respectively abutted on the traction line guide sleeve fixing frame; it is characterized in that: A steering adjustment wheel group is embedded in the front end of the handle of the adjustment control mechanism; the steering adjustment wheel group includes a left winding wheel, a right winding wheel and a dial; the left winding wheel and the right winding wheel both include a clamping installation portion and a winding wheel portion arranged on the side of the clamping installation portion, the line body ends of the first traction line and the second traction line are respectively connected to the left winding wheel and the right winding wheel, and are respectively wound on the winding wheel portions of the left winding wheel and the right winding wheel in opposite directions; the left and right sides of the dial are respectively provided with clamping portions that cooperate with the clamping installation portions of the left winding wheel and the right winding wheel for clamping transmission; the steering adjustment wheel group composed of the left winding wheel, the right winding wheel and the dial is movably connected to the shell of the adjustment control mechanism at the rear, and the dial is exposed outside the shell of the adjustment control mechanism.

2. A steering endoscope that facilitates precise tightness adjustment according to claim 1, characterized in that: The side surface of the thumbwheel is provided with a plurality of positioning grooves distributed in a circumference, and a spring positioning bead assembly corresponding to the positioning grooves is fixedly installed in the shell of the adjustment control mechanism.

3. A steering endoscope that facilitates precise tightness adjustment according to claim 2, characterized in that: The left and right sides of the thumbwheel are provided with a plurality of circumferentially distributed positioning grooves, and the housing of the adjustment control mechanism is fixedly installed with spring positioning bead components corresponding to the positioning grooves on the left and right sides respectively.

4. The steering endoscope that facilitates precise tightness adjustment according to claim 1, characterized in that: The clamping installation part is a gear structure, a regular polygon structure or an end face clamping transmission structure.

5. The steering endoscope that facilitates precise tightness adjustment according to claim 1, characterized in that: The steering adjustment wheel group is movably connected to the shell of the adjustment control mechanism through an independent structure support shaft, and the left winding wheel and the right winding wheel are loosely fitted and sleeved with the support shaft; or the steering adjustment wheel group is movably connected to the shell of the adjustment control mechanism through a hollow shaft of an integrated structure on both sides of the dial wheel, or the steering adjustment wheel group is movably connected to the shell of the adjustment control mechanism through a segmented support shaft that extends integrally from the sides of the left winding wheel and the right winding wheel.

6. The steering endoscope that facilitates precise tightness adjustment according to claim 1, characterized in that: The ends of the line bodies of the first traction line and the second traction line are respectively provided with fixing blocks, and the inner walls of the gear mounting parts of the left winding wheel and the right winding wheel are respectively provided with fixing block slots for the corresponding fixing blocks to be embedded and fixed.

7. The steering endoscope that facilitates precise tightness adjustment according to claim 1, characterized in that: The wheel surface of the thumbwheel is provided with an anti-skid rubber sleeve.

8. The steering endoscope that facilitates precise tightness adjustment according to claim 5, characterized in that: The support shaft is located inside the front end of the handle of the adjustment control mechanism and is arranged vertically with the handle.

9. The steering endoscope that facilitates precise tightness adjustment according to claim 1, characterized in that: The steering structure includes a plurality of steering plates, each of which is connected in series with the line body of the first traction line and the second traction line. Each steering plate is provided with a supporting protrusion between the through holes of the line body of the first traction line and the second traction line, and a positioning groove with a depth lower than the supporting protrusion is provided on the back of the supporting protrusion.

10. The steering endoscope that facilitates precise tightness adjustment according to claim 1, characterized in that: The rear end of the transmission protection sleeve is sleeved with a spring.

Images