Assembly jig for head end structure of endoscope

Abstract

The utility model discloses an assembling jig of an endoscope head end structure, which comprises a first seat body, a second seat body and a positioning column, the first seat body is provided with a first end wall and a first side wall, the first end wall is provided with a first groove, the groove bottom wall of the first groove is provided with a second groove, and the first side wall is provided with a second side wall. The first seat body is respectively provided with a convex rib at two transverse sides of the second groove in a convex manner, the first side wall is provided with a third groove, and the third groove is communicated with the first groove and the second groove; the second seat body is convexly arranged on the first side wall along the longitudinal direction; the positioning column is arranged on the second seat body in a protruding mode in the vertical direction, and the positioning column and the groove bottom wall of the third groove are spaced. The assembling device has the advantages of being high in assembling quality and high in assembling efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to endoscope's production assembly technical field, concretely relates to a kind of endoscope head end structure's assembly fixture. BACKGROUND

[0002] As a kind of minimally invasive examination and treatment medical instrument, endoscope is mainly used for diagnosing and treating various diseases. The insertion body of endoscope can generally enter the body through the natural orifice of human body or small incision by surgery, and the doctor can clearly observe the situation in the body through the imaging device arranged at the head end structure of the insertion body, diagnose various diseases and various auxiliary treatments, such as polypectomy, lithotripsy, etc.

[0003] In order to ensure the normal operation of the imaging device, generally, the head end structure of the insertion body is also provided with an illuminating device and a FPC (Flexible Printed Circuit) flexible flat cable, which connects the imaging device, the illuminating device and an external control device, etc. The size of the existing FPC flexible flat cable is generally small, which needs to be folded manually and then loaded into the mounting seat of the head end structure. This assembly method has many drawbacks, which can easily reduce the assembly quality and assembly efficiency, and the product may have structural defects. For example, the FPC flexible flat cable may not be folded in place, which can cause structural interference when loaded into the mounting seat; secondly, even if the FPC flexible flat cable is folded in place, it can be unfolded due to the lack of limiting during the process of entering the mounting seat, which can cause the imaging device and / or the illuminating device to be misaligned. SUMMARY

[0004] The main purpose of the utility model is to provide an assembly fixture for the head end structure of an endoscope, which aims to solve the problem of reducing assembly quality and assembly efficiency in the traditional assembly of the head end structure.

[0005] To achieve the above-mentioned purpose, the utility model provides an assembly fixture for the head end structure of an endoscope, which comprises:

[0006] The first seat body has a first end wall at one vertical end thereof and a first side wall at one longitudinal side thereof. The first end wall is provided with a first recess. The bottom wall of the first recess is provided with a second recess. The first seat body is provided with a protruding rib at each of the two lateral sides of the second recess. The first side wall is provided with a third recess, and the third recess is communicated with the first recess and the second recess.

[0007] The second seat body is longitudinally protruded on the first side wall; and

[0008] The positioning column is vertically protruded on the second seat body and spaced from the bottom wall of the third recess.

[0009] Optionally, the convex rib comprises a first rib segment and a second rib segment connected in sequence in a direction away from the second groove in the vertical direction;

[0010] The two first rib segments have first proximal walls close to each other, which are flush with the side groove walls of the second groove on the side respectively;

[0011] The two second rib segments have second proximal walls close to each other, which extend away from the other second proximal wall in the direction away from the second groove in the vertical direction.

[0012] Optionally, the distance between the two first proximal walls is D1, the total size of the imaging device and the illumination flexible flat cable folded on both sides of the imaging device in the corresponding direction in the head end structure is D2, and D1≥D2.

[0013] Optionally, the protruding height of the convex rib is T, the groove depth of the second groove is H, and the length of the illumination flexible flat cable in the head end structure is L, and T+H<L.

[0014] Optionally, the distance between the positioning column and the groove bottom wall of the third groove is D3, and the thickness of the imaging flexible flat cable in the head end structure is D4, and D3 is greater than D4.

[0015] Optionally, the outer diameter of the positioning column is smaller than the inner diameter of the extension channel in the head end structure.

[0016] Optionally, the first end wall is further provided with two fourth grooves, and the two fourth grooves are arranged on the transverse sides of the first groove and communicate with the first groove respectively;

[0017] The groove bottom wall of the fourth groove is flush with the end wall of the convex rib, and the inner shape and size of the fourth groove are adapted to the shape and size of the illumination flexible flat cable in the head end structure respectively.

[0018] Optionally, the first groove has a reference side groove wall away from the first side wall, the reference side groove wall is in the shape of a concave arc surface, and the reference side groove wall is used for the corresponding outer side wall of the mounting seat in the head end structure to abut movably.

[0019] Optionally, the first seat body is further provided with a fifth groove and a sixth groove on the side of the first groove away from the positioning column, and the fifth groove penetrates the side groove wall and the reference side groove wall of the sixth groove in the longitudinal direction;

[0020] The assembly jig of the endoscope head end structure further comprises a slide block elastically movable in the vertical direction, the slide block comprises a main block body accommodated in the sixth groove and an extension block body accommodated in the fifth groove, and the extension block body is arranged to protrude from the reference side groove wall in the longitudinal direction.

[0021] Optionally, the endoscope head end structure assembly jig further comprises:

[0022] a resilient member clamped between the groove bottom wall of the sixth groove and the main block, the resilient member being elastically deformed under external force to drive the slider to elastically move vertically; and / or,

[0023] a pressing block detachably mounted on the first end wall and at least partially covering the slot of the fifth groove and / or the sixth groove.

[0024] In the technical scheme, in the initial state, the imaging device in the FPC flexible flat cable is suspended above the slot of the second groove; the illuminating device and the illuminating flexible flat cable are overlapped at the protruding rib; and the imaging flexible flat cable is bendable and inserted between the positioning column and the groove bottom wall of the third groove. Then, the imaging device is pressed into the second groove by applying vertical force to the imaging device, which drives the illuminating flexible flat cable to be folded on the lateral sides of the imaging device, and the illuminating device is arranged adjacent to the lateral sides of the imaging device. The FPC flexible flat cable is basically folded in place and is limited to maintain the current folding state. Then, the mounting seat is inserted at the first groove, so that the extension channel in the mounting seat is naturally aligned with the positioning column, the imaging mounting hole in the mounting seat is naturally aligned with the imaging device, and the illuminating mounting hole in the mounting seat is naturally aligned with the illuminating device. Then, the mounting seat is applied with vertical force, and the imaging device is installed in the imaging mounting hole and the illuminating device is installed in the illuminating mounting hole under the positioning and guiding of the positioning column, thereby completing the overall installation of the head end structure, and the assembly quality and the assembly efficiency are high. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained from the structures shown in the drawings without creative labor for those skilled in the art.

[0026] Figure 1 A perspective view of the mounting seat of the head end structure assembled by the endoscope head end structure assembly jig provided by the present application;

[0027] Figure 2 A perspective view of the head end module of the head end structure assembled by the endoscope head end structure assembly jig provided by the present application;

[0028] Figure 3 A Figure 2 main structure exploded view of the head end module;

[0029] Figure 4 A three-dimensional schematic view of an embodiment of the endoscope head end structure assembly jig provided by the present application;

[0030] Figure 5 The endoscope head end structure assembly jig is provided with Figure 4 A main structure exploded schematic view of the endoscope head end structure assembly jig;

[0031] Figure 6 The first seat body is provided with Figure 4 A local structure enlarged schematic view at the first seat body in the endoscope head end structure assembly jig;

[0032] Figure 7 The endoscope head end structure assembly jig is provided with Figure 4 A front view schematic view of the endoscope head end structure assembly jig;

[0033] Figure 8 The endoscope head end structure assembly jig is provided with Figure 4 A top view schematic view of the endoscope head end structure assembly jig;

[0034] Figure 9 The endoscope head end structure assembly jig is provided with Figure 4 A three-dimensional schematic view of the endoscope head end structure assembly jig after the head end module is arranged;

[0035] Figure 10 The endoscope head end structure assembly jig is provided with Figure 9 A three-dimensional schematic view of the endoscope head end structure assembly jig after the imaging device is pressed along the vertical direction;

[0036] Figure 11 The endoscope head end structure assembly jig is provided with Figure 10 A three-dimensional schematic view of the endoscope head end structure assembly jig after the mounting seat is arranged;

[0037] Figure 12 The endoscope head end structure assembly jig is provided with Figure 11 A three-dimensional schematic view of the endoscope head end structure assembly jig after the mounting seat is pressed along the vertical direction.

[0038] BRIEF DESCRIPTION OF THE DRAWINGS

[0039] 100 first seat body; 101 first end wall; 102 first side wall; 110 first groove; 111 reference side groove wall; 120 second groove; 130 third groove; 140 fourth groove; 150 fifth groove; 160 sixth groove; 170 protruding rib; 171 first rib segment; 171a first proximal wall; 172 second rib segment; 172a second proximal wall; 200 second seat body; 300 positioning column; 410 sliding block; 411 main block body; 412 extension block body; 420 elastic member; 430 pressing block; 510 mounting seat; 511 extension channel; 512 imaging mounting hole; 513 illumination mounting hole; 520 imaging device; 530 illumination device; 540 FPC flexible flat cable; 541 imaging flexible flat cable; 541a imaging connecting flexible flat cable; 541b imaging extension flexible flat cable; 542 illumination flexible flat cable; 542a illumination connecting flexible flat cable; 542b illumination extension flexible flat cable.

[0040] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0042] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0043] In addition, if the embodiments of the utility model involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes A scheme, or B scheme, or A and B schemes. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0044] Referring to Figures 1 to 12 The utility model provides a kind of endoscope head end structure's assembly fixture (for easy understanding, be called as assembly fixture below).The assembly fixture is mainly used to install the head end structure of endoscope.

[0045] It can be understood that endoscope generally includes connected operating main body and insertion main body.

[0046] Operating main body generally refers to the main body structure that is not involved in patient's body in medical operation process, and can be held by operating personnel, to operate insertion main body and external instrument etc. installed therein.Based on this, operating main body is generally designed into handle shape, gun body shape, grip rod shape etc. for easy user hand-held operation.Usually, operating main body includes shell and various functional components arranged at shell.Functional components include bending device etc.

[0047] Insertion main body refers to long tubular structure that is at least partially involved in patient's body to reach diseased site in medical operation process.Usually, insertion main body is fixedly connected at one end of operating main body, and extends long in direction away from operating main body.Usually, the end of insertion main body away from operating main body forms head end.Head end structure is generally installed at head end.Insertion main body is generally provided with working channel and installation channel along its axial direction respectively.Specifically, please combine Figure 1 Head end structure includes mounting seat 510 and head end module arranged at mounting seat 510.Installing seat 510 is provided with extension channel 511 corresponding to working channel of insertion main body, and is provided with imaging installation hole 512 and illumination installation hole 513 corresponding to installation channel.Extension channel 511 can generally be used to install external diagnosis and treatment instrument, or to perform suction, liquid delivery etc. through extension channel 511.

[0048] Please combine Figures 2 to 3The head-end module includes an imaging device 520, at least one illuminating device 530, and a FPC flexible flat cable. The imaging device 520, which is used for image acquisition of a diseased part in a medical operation, can be, but is not limited to, a CMOS (Complementary Metal-Oxide-Semiconductor) image sensor. The illuminating device 530, which is used for illumination of the diseased part in the medical operation and can assist the imaging device 520 in image acquisition, can be, but is not limited to, an LED or other built-in light source device, or a fiber or other device that guides light from an external light source device to the head end. The FPC flexible flat cable is electrically connected to the imaging device 520, the illuminating device 530, and the cable passing through the mounting channel. The FPC flexible flat cable includes an imaging flexible flat cable 541 and an illuminating flexible flat cable 542. When two illuminating flexible flat cables 542 are provided, the two illuminating flexible flat cables 542 are arranged on opposite sides of the imaging flexible flat cable 541 in the width direction of the imaging flexible flat cable 541, so that the two illuminating flexible flat cables 542 and the imaging flexible flat cable 541 together form a T shape. Specifically, the imaging flexible flat cable 541 includes an imaging connecting flexible flat cable 541a and an imaging extending flexible flat cable 541b connected in sequence along the length direction of the imaging flexible flat cable 541. The imaging connecting flexible flat cable 541a is electrically and mechanically connected to the imaging device 520. The illuminating flexible flat cable 542 includes an illuminating connecting flexible flat cable 542a and an illuminating extending flexible flat cable 542b connected in sequence along the length direction of the illuminating flexible flat cable 542. Similarly, the illuminating connecting flexible flat cable 542a is electrically and mechanically connected to the illuminating device 530. The illuminating extending flexible flat cable 542b is connected to the imaging connecting flexible flat cable 541a at an end away from the illuminating connecting flexible flat cable 542a.

[0049] In view of the above, in combination with Figures 4 to 12 The endoscope head-end structure assembly jig provided by the utility model includes a first seat body 100, a second seat body 200 and a positioning column 300. The first seat body 100 has a first end wall 101 at one vertical end and a first side wall 102 at one longitudinal side, the first end wall 101 is provided with a first groove 110, the groove bottom wall of the first groove 110 is provided with a second groove 120, the first seat body 100 is provided with a convex rib 170 at the transverse two sides of the second groove 120, the first side wall 102 is provided with a third groove 130, and the third groove 130 is communicated with the first groove 110 and the second groove 120; the second seat body 200 is longitudinally convex on the first side wall 102; and the positioning column 300 is vertically convex on the second seat body 200 and is spaced from the groove bottom wall of the third groove 130.

[0050] In the technical solution provided by this utility model, in the initial state, the imaging device 520 in the FPC flexible flat cable is suspended above the slot opening of the second groove 120; the illumination device 530 and the illumination flexible flat cable 542 overlap at the protruding rib 170; the imaging flexible flat cable 541 can be bent and inserted between the positioning post 300 and the bottom wall of the third groove 130. Then, by applying vertical force to the imaging device 520, the imaging device 520 is pressed into the second groove 120, which correspondingly causes the illumination flexible flat cable 542 to fold on both sides of the imaging device 520, and the illumination device 530 is adjacent to both sides of the imaging device 520. The FPC flexible flat cable is basically folded in place and is limited to maintain the current folded state. Then, by inserting the mounting base 510 into the first groove 110, the extension channel 511 in the mounting base 510 is naturally aligned with the positioning post 300, the imaging mounting hole 512 in the mounting base 510 is naturally aligned with the imaging device 520, and the lighting mounting hole 513 in the mounting base 510 is naturally aligned with the lighting device 530. Then, by applying vertical force to the mounting base 510, under the positioning and guiding action of the positioning post 300, the imaging device 520 is installed in the imaging mounting hole 512 and the lighting device 530 is installed in the lighting mounting hole 513, thus completing the overall installation of the head end structure. This method features high assembly quality and high assembly efficiency.

[0051] This design does not limit the specific form of the first base 100. Depending on actual needs, the first base 100 can be designed in any suitable shape, size, and material. For example... Figure 4 As shown, the first base 100 is roughly rectangular. The length direction of the first base 100 corresponds to the horizontal direction, the width direction corresponds to the vertical direction, and the height direction corresponds to the vertical direction. In practical applications, the vertical direction can specifically refer to the direction of gravity, which has both upward and downward directions.

[0052] Based on this, the first end wall 101 can specifically be the upper end wall of the first seat 100, and the first side wall 102 can specifically be the side wall facing the user.

[0053] The first end wall 101 has a first groove 110. The shape and size of the groove 110 are adapted to the shape and size of the part of the mounting base 510 where at least the imaging mounting hole 512 and the illumination mounting hole 513 are provided, so that the mounting base 510 can be inserted into the first groove 110 and moved out of the first groove 110 under the operation of the operator.

[0054] The bottom wall of the first groove 110 is provided with a second groove 120. The projection area of the second groove 120 on the bottom wall of the first groove 110 corresponds to the projection area of the imaging mounting hole 512 on the end wall of the mounting seat 510, so that when the mounting seat 510 is inserted into the first groove 110, the second groove 120 is aligned with the imaging mounting hole 512. The groove width of the second groove 120 in the longitudinal direction is at least not less than the groove width of the imaging device 520 in the corresponding direction. As shown in Figure 10 , the groove width of the second groove 120 in the transverse direction is at least not less than the total thickness D2 of the imaging device 520 and the two illumination flexible flat cables 542 folded on the transverse sides of the imaging device 520. The groove depth of the second groove 120 is less than the total height of the imaging device 520 and the imaging connection flexible flat cable 541a.

[0055] The first seat body 100 is provided with a protruding rib 170 on the transverse sides of the second groove 120 in the vertical direction. The protruding rib 170 has the following functions. On the one hand, when the head-end module is arranged as shown in Figure 9 , the protruding rib 170 can elevate the arrangement position of the head-end module in the second groove 120, which is convenient for the operator to operate. On the other hand, after the imaging device 520 is pressed in the vertical direction as shown in Figure 10 , so that the illumination flexible flat cable 542 is folded on the transverse sides of the imaging device 520, the imaging device 520, the imaging connection flexible flat cable 541a, the illumination device 530 and the illumination connection flexible flat cable 542a are all higher than the bottom wall of the first groove 110, which is convenient for the operator to assemble the head-end module into the mounting seat 510 as shown in Figures 11 to 12 .

[0056] Further, in an embodiment, the first end wall 101 is further provided with two fourth grooves 140, which are arranged on the transverse sides of the first groove 110 and respectively communicate with the first groove 110. The bottom wall of the fourth groove 140 is flush with the end wall of the protruding rib 170, and the shape and size of the groove of the fourth groove 140 are adapted to the shape and size of the illumination flexible flat cable 542 in the head-end structure. Since the illumination extension flexible flat cable 542b has a certain length, the illumination connection flexible flat cable 542a / illumination device 530 and the imaging device 520 / imaging connection flexible flat cable 541a are spaced apart. The size of the protruding rib 170 in the transverse direction is limited by the groove width of the first groove 110 in the transverse direction and the thickness of the mounting seat 510 in the transverse direction, and cannot be set too long. Therefore, by providing the fourth groove 140, the operator can operate as shown in Figure 9When the head-end module is arranged on the first seat body 100, the lighting device 530 and the lighting connection flexible flat cable 542a connected thereto, and part of the lighting extension flexible flat cable 542b can be supported at the groove bottom wall of the fourth groove 140, and are not prone to deformation, folding or structural damage. Moreover, through the shape and size adaptation of the fourth groove 140, a certain positioning and limiting effect can be generated on the lighting device 530 and the lighting connection flexible flat cable 542a connected thereto.

[0057] Specifically, the convex rib 170 includes first rib segments 171 and second rib segments 172 connected in sequence in a direction away from the second groove 120 in the vertical direction; wherein the two first rib segments 171 have first proximal walls 171a close to each other, and the first proximal walls 171a are flush with the side groove walls of the second groove 120 on the side. That is, the first proximal walls 171a and the side groove walls of the second groove 120 on the side are as flat as possible to avoid forming unevenness, which would cause the imaging device 520 to be pressed in the vertical direction to be not smooth and the imaging device 520 to be pressed to be not symmetrical. Figure 10 During the process of pressing the imaging device 520 in the vertical direction as shown, the lighting flexible flat cable 542 interferes with the unevenness to cause the pressing to be not smooth, and is prone to structural damage.

[0058] The two second rib segments 172 have second proximal walls 172a close to each other, and the second proximal walls 172a extend obliquely away from the other second proximal wall 172a in a direction away from the second groove 120 in the vertical direction. Through the oblique extension of the second proximal wall 172a, on the one hand, a flared structure with a larger width can be formed at the second rib segment 172, which is more conducive to the folding of the lighting flexible flat cable 542 on both sides of the imaging device 520 to be symmetrical and flat. Figure 10 When the imaging device 520 is pressed in the vertical direction as described, the centering of the imaging device 520 and the folding of the lighting flexible flat cable 542 on both sides of the imaging device 520 are more symmetrical and flat. On the other hand, when the operation as shown is completed, the lighting device 530 and the lighting connection flexible flat cable 542a connected thereto are not completely directed toward the side wall of the imaging device 520, but are generally directed upward, thereby facilitating the alignment of the imaging device 520 with the imaging mounting hole 512 and the alignment of the lighting device 530 with the lighting mounting hole 513 during the process of assembling and mounting the mounting seat 510 as shown. Figure 10 When the operation as shown is completed, the lighting device 530 and the lighting connection flexible flat cable 542a connected thereto are not completely directed toward the side wall of the imaging device 520, but are generally directed upward, thereby facilitating the alignment of the imaging device 520 with the imaging mounting hole 512 and the alignment of the lighting device 530 with the lighting mounting hole 513 during the process of assembling and mounting the mounting seat 510 as shown. Figure 11 When the operation as shown is completed, the lighting device 530 and the lighting connection flexible flat cable 542a connected thereto are not completely directed toward the side wall of the imaging device 520, but are generally directed upward, thereby facilitating the alignment of the imaging device 520 with the imaging mounting hole 512 and the alignment of the lighting device 530 with the lighting mounting hole 513 during the process of assembling and mounting the mounting seat 510 as shown.

[0059] Further, when the distance between the two first proximal walls 171a is D1, and the total size of the imaging device 520 and the lighting flexible flat cable 542 folded on both sides of the imaging device 520 in the corresponding direction in the head-end structure is D2, then D1≥D2. In this way, when the operation as shown is completed, the lighting device 530 and the lighting connection flexible flat cable 542a connected thereto can be generally spaced apart from the imaging device 520, leaving sufficient clearance, which facilitates the alignment of the imaging device 520 with the imaging mounting hole 512 and the alignment of the lighting device 530 with the lighting mounting hole 513 during the process of assembling and mounting the mounting seat 510 as shown. Figure 10 When the operation as shown is completed, the lighting device 530 and the lighting connection flexible flat cable 542a connected thereto are not completely directed toward the side wall of the imaging device 520, but are generally directed upward, thereby facilitating the alignment of the imaging device 520 with the imaging mounting hole 512 and the alignment of the lighting device 530 with the lighting mounting hole 513 during the process of assembling and mounting the mounting seat 510 as shown. Figure 11When assembling the mounting base 510 as shown, the spacer structure located between the imaging mounting hole 512 and the illumination mounting hole 513 is inserted into the gap to complete the smooth placement of the mounting base 510 in the first groove 110.

[0060] Furthermore, the protrusion height of the rib 170 is T, the groove depth of the second groove 120 is H, and the length of the lighting flexible cable 542 in the head end structure is L, then T + H < L. In this way, it is possible to achieve the following when the structure is completed... Figure 10 After the operation shown, the lighting device 530 and its connected lighting connection flexible cable 542a are fully exposed outside the ribs 170 and will not be pulled into the recessed area between the two ribs 170, which facilitates operation. Figure 11 The assembly mounting base 510 shown.

[0061] Furthermore, the distance between the positioning post 300 and the bottom wall of the third groove 130 is D3, and the thickness of the imaging flexible cable 541 in the head end structure is D4, therefore D3 is greater than D4. This ensures that during operation... Figure 9 The steps shown make it easier to bend the imaging extension flexible cable 541b and insert it into the gap between the positioning post 300 and the bottom wall of the third groove 130. Furthermore, during operation... Figure 11 During the process of assembling the mounting base 510 into the first groove 110, sufficient space is reserved between the positioning post 300 and the bottom wall of the third groove 130 for the insertion of the spacer structure located between the imaging mounting hole 512 and the extension channel 511.

[0062] Of course, the outer diameter of the positioning post 300 is smaller than the inner diameter of the extension channel 511 in the head end structure. Thus, when operating as... Figure 11 During the process of assembling the mounting base 510 into the first groove 110, the positioning post 300 can be more smoothly inserted into the extension channel 511, which can play a positioning role without interfering too much with the assembly process of the mounting base 510.

[0063] like Figures 1 to 12 As shown, the first groove 110 has a reference side groove wall 111 away from the first side wall 102. The reference side groove wall 111 is concave arc-shaped and is used to allow the corresponding outer side wall of the mounting seat 510 in the head end structure to move and abut against it. Especially when the operation is as follows Figure 11 During the process of assembling the mounting base 510 into the first groove 110, the reference side groove wall 111 slides against the corresponding side wall of the mounting base 510, which can provide relatively accurate guidance for the assembly of the mounting base 510, thereby ensuring that the installation of the imaging device 520 in the imaging mounting hole 512 and the installation of the illumination device 530 in the illumination mounting hole 513 are more accurate.

[0064] Further, in an embodiment, the first seat body 100 is sequentially provided with a fifth groove 150 and a sixth groove 160 on a side of the first groove 110 away from the positioning column 300, the fifth groove 150 penetrates the side groove wall and the reference side groove wall 111 of the sixth groove 160 in the longitudinal direction; the assembly jig of the end structure of the endoscope further comprises a slide block 410 elastically movable in the vertical direction, the slide block 410 comprises a main block 411 accommodated in the sixth groove 160 and an extension block 412 accommodated in the fifth groove 150, and the extension block 412 is arranged to protrude from the reference side groove wall 111 in the longitudinal direction. It can be understood that, when the steps shown in Figures 9 to 10 are operated, the end module and the extension block 412 do not generate relative force in the vertical direction, and at this time, the slide block 410 is in a natural state. When the steps shown in Figure 11 are operated, in the process of assembling the mounting seat 510 to the first groove 110, the mounting seat 510 first presses the part of the extension block 412 protruding from the reference side groove wall 111 downward, and drives the extension block 412 and the main block 411 to slide downward until the bottom end of the mounting seat 510 abuts against the groove bottom wall of the first groove 110, the mounting seat 510 is assembled in place, and the imaging device 520, the illuminating device 530 and the FPC flexible flat cable are assembled in place in the mounting seat 510.

[0065] There are various schemes to achieve the purpose of the slide block 410 being elastically movable in the vertical direction, for example, the slide block 410 itself can be at least partially made of elastic material, or in an embodiment, the assembly jig of the end structure of the endoscope further comprises an elastic member 420. The elastic member 420 is clamped between the groove bottom wall of the sixth groove 160 and the main block 411, and the elastic member 420 is elastically deformed under the driving of external force to drive the slide block 410 to elastically move in the vertical direction. The elastic member 420 is, for example, a spring member.

[0066] In addition, the assembly jig of the end structure of the endoscope further comprises a pressing block 430, the pressing block 430 is detachably mounted to the first end wall 101 and at least partially covers the slot of the fifth groove 150 and / or the sixth groove 160. The pressing block 430, the groove bottom wall of the fifth groove 150 and the groove bottom wall of the sixth groove 160 can vertically limit the slide block 410, and since the pressing block 430 at least partially covers the slot of the fifth groove 150 and / or the sixth groove 160, the slide block 410 can be effectively prevented from escaping outward.

[0067] It should be noted that, when the slide block 410 is provided as described above, since the extension block 412 partially protrudes from the reference side groove wall 111, the end wall of the extension block 412 constitutes a reference surface of the imaging device 520 in the longitudinal direction during the operation of Figures 9 to 10 , which ensures that the imaging device 520 is accurately and without deflection in the vertical pressing direction during the assembly in place at the second groove 120.

[0068] It should be noted that the structures between the first seat body 100 and the second seat body 200, between the convex rib 170 and the first seat body 100, between the first rib segment 171 and the second rib segment 172, between the positioning column 300 and the second seat body 200, and the like can be integrally formed, or can be connected after being separately formed.

[0069] Based on the above, the main use steps of the endoscope head structure assembly jig in an embodiment will be specifically described as follows:

[0070] Firstly, as shown in Figure 9 , a head module is arranged at the first seat body 100. Among them, the head imaging device 520 and the imaging connection flexible flat cable 541a are suspended at the slot of the second groove 120, and the longitudinal side wall of the imaging device 520 can abut against the end wall of the extension block 412 to achieve positioning. The imaging extension flexible flat cable 541b is vertically bent and inserted at the gap between the slot bottom wall of the third groove 130 and the positioning column 300. The illumination device 530, the illumination connection flexible flat cable 542a, and part of the illumination extension flexible flat cable 542b are supported at the slot bottom wall of the fourth groove 140, and the remaining part of the illumination extension flexible flat cable 542b is supported at the convex rib 170.

[0071] Then, as shown in Figure 10 , an external force is vertically pressed on the imaging device 520, which drives the imaging device 520 and the imaging connection flexible flat cable 541a to move together towards the slot bottom wall of the second groove 120, and drives the illumination extension flexible flat cable 542b to fold on the two sides of the imaging device 520. The illumination device 530 and the illumination connection flexible flat cable 542a are exposed above the convex rib 170. The FPC flexible flat cable in the head module is folded in place.

[0072] Then, as shown in Figure 11 , the mounting seat 510 is arranged at the first groove 110, and the longitudinal side wall of the mounting seat 510 is positioned in abutment with the reference side groove wall 111, so that the imaging device 520 and the imaging mounting hole 512, the illumination device 530 and the illumination mounting hole 513, and the positioning column 300 and the extension channel 511 are aligned. The bottom wall of the mounting seat 510 is supported at the extension block 412.

[0073] Finally, as shown in Figure 12 , an external force is vertically pressed on the mounting seat 510, which drives the extension block 412 and the main block 411 to move downward together until the bottom wall of the mounting seat 510 abuts against the slot bottom wall of the first groove 110, so that the imaging device 520 is assembled in place at the imaging mounting hole 512, and the illumination device 530 is assembled in place at the illumination mounting hole 513.

[0074] The above merely describes preferred embodiments of the present application, and is not intended to limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the inventive concept of the present application, as described in the present application specification and drawings, is included in the patent protection scope of the present application.

Claims

1. An assembly jig for an endoscope tip structure, characterized by comprising: a jig body; a jig head provided on the jig body; a jig tip provided on the jig head; and a jig tip cover provided on the jig tip. The head end structure of the endoscope comprises: a first seat body having a first end wall at a vertical end thereof and a first side wall at a longitudinal side thereof, the first end wall being provided with a first recess, a bottom wall of the first recess being provided with a second recess, the first seat body being provided with a protruding rib at each of the two lateral sides of the second recess, the first side wall being provided with a third recess, the third recess being in communication with the first recess and the second recess; a second seat body protruding from the first side wall in the longitudinal direction; and a positioning column protruding from the second seat body in the vertical direction and being spaced apart from a bottom wall of the third recess.

2. The assembly jig for an endoscope tip structure according to claim 1, wherein The protruding rib comprises a first rib segment and a second rib segment connected in sequence in a direction away from the second recess in the vertical direction; the two first rib segments have first proximal side walls close to each other, the first proximal side walls being flush with the side walls of the second recess on the corresponding sides, respectively; the two second rib segments have second proximal side walls close to each other, the second proximal side walls being inclined to extend away from each other in the direction away from the second recess in the vertical direction.

3. The assembly jig for an endoscope tip structure according to claim 2, wherein The distance between the two first proximal side walls is D1, the total size of the imaging device and the illumination flexible flat cable folded on both sides of the imaging device in the corresponding direction is D2, and D1≥D2.

4. The endoscope tip structure assembling jig according to claim 2, wherein The protruding height of the protruding rib is T, the depth of the second recess is H, and the length of the illumination flexible flat cable in the head end structure is L, and T+H<L.

5. The endoscope tip structure assembling jig according to claim 1, wherein The distance between the positioning column and the bottom wall of the third recess is D3, and the thickness of the imaging flexible flat cable in the head end structure is D4, and D3>D4.

6. The endoscope tip structure assembling jig according to claim 1, wherein The outer diameter of the positioning column is smaller than the inner diameter of the extension channel in the head end structure.

7. The assembly jig for an endoscope tip structure according to claim 1, wherein The first end wall is further provided with two fourth recesses, the two fourth recesses being arranged on the two lateral sides of the first recess, respectively, and being in communication with the first recess, respectively; the bottom wall of the fourth recess is flush with the end wall of the protruding rib, and the shape and size of the fourth recess are adapted to the shape and size of the illumination flexible flat cable in the head end structure, respectively.

8. The endoscope tip structure assembling jig according to claim 1, wherein The first recess has a reference side wall away from the first side wall, the reference side wall being in the form of a concave arc surface, and the reference side wall is used for the corresponding outer side wall of the mounting seat in the head end structure to abut against.

9. The assembly jig for an endoscope tip structure according to claim 8, wherein The first seat body is provided with a fifth recess and a sixth recess in sequence on the side of the first recess away from the positioning column, the fifth recess penetrating through the side wall of the sixth recess and the reference side wall in the longitudinal direction; the assembly jig of the endoscope head end structure further comprises a slide block elastically movable in the vertical direction, the slide block comprising a main block accommodated in the sixth recess and an extension block accommodated in the fifth recess, the extension block protruding from the reference side wall in the longitudinal direction.

10. The assembly jig for an endoscope tip structure according to claim 9, wherein The assembly jig of the endoscope head end structure further comprises: a resilient member clamped between the bottom wall of the sixth recess and the main block, the resilient member being elastically deformed under the driving of an external force to drive the slide block to elastically move in the vertical direction; and / or a pressing block detachably mounted on the first end wall and at least partially shielding the opening of the fifth recess and / or the sixth recess.

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