cassette

Abstract

The present application relates to a kind of belt boxes, comprising: the shell with housing cavity;At least part is in the first winding piece and the second winding piece in housing cavity;Wiping belt, one end of wiping belt is connected with the first winding piece, the other end of wiping belt is connected with the second winding piece, wiping belt is moved relative to the shell by the first winding piece and the second winding piece;And positioning block, set on the shell, the shell is also provided with the first opening that is communicated with housing cavity, wiping belt is set on the second winding piece from the first winding piece, and it is abutted on the positioning block when passing the first opening.Wiping belt is contacted with the push piece when the push piece mechanism needs to be cleaned, and wiping belt is clamped between positioning block and push piece under the action of the force applied by push piece to wiping belt, so as to increase the friction between push piece and wiping belt, and the cleaning effect of push piece mechanism is improved under the condition that the friction between push piece and wiping belt is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a carrying box. BACKGROUND

[0002] When observing a micro object, it is often necessary to make the micro object into a microscopic slide specimen so as to facilitate observation under a microscope. The microscopic slide specimen includes a section, a mounted specimen and a smear, wherein the smear is a specimen made by uniformly smearing a liquid specimen (such as blood, bone marrow fluid, etc.) collected from a living body on a glass slide, and has been widely used in the medical field.

[0003] For example, when examining a patient, it is sometimes necessary to detect the blood of the patient. At this time, it is necessary to make a blood smear by uniformly smearing the blood on a glass slide, and to place the prepared blood smear under a microscope for observation. When making the blood smear, in order to avoid sample contamination by manual operation, a slide pushing mechanism is often used to push the blood in the form of drops flat so as to uniformly smear it on the glass slide.

[0004] In order to avoid cross infection, the slide pushing mechanism needs to be cleaned after each pushing of blood. The traditional cleaning mechanism has poor cleaning effect. SUMMARY

[0005] Therefore, it is necessary to provide a carrying box with better cleaning effect in view of the poor cleaning effect of the traditional cleaning mechanism.

[0006] A carrying box, comprising:

[0007] a housing provided with a receiving cavity;

[0008] a first winding member and a second winding member arranged at least partially in the receiving cavity;

[0009] a wiping band, one end of the wiping band being connected to the first winding member, the other end of the wiping band being connected to the second winding member, the wiping band moving relative to the housing by means of the first winding member and the second winding member; and

[0010] a positioning block arranged on the housing, the housing being further provided with a first opening in communication with the receiving cavity, the wiping band passing through the first opening and abutting against the positioning block when being wound on the second winding member from the first winding member.

[0011] The carrying box described above, when the slide pushing mechanism needs to be cleaned, the slide comes into contact with the wiping band, and under the action of the force applied by the slide to the wiping band, the wiping band is clamped between the positioning block and the slide, thus increasing the friction between the slide and the wiping band. Under the condition that the friction between the slide and the wiping band is increased, the cleaning effect on the slide of the slide pushing mechanism is improved.

[0012] In one of the embodiments, the positioning block is pivotally connected to the housing, and the positioning block is capable of swinging relative to the housing.

[0013] In one of the embodiments, the housing further comprises a limiting member for limiting the swing position of the positioning block relative to the housing, the limiting member is arranged on the housing, and the limiting member comprises a first sub-limiting member and a second sub-limiting member, the first sub-limiting member and the second sub-limiting member are respectively arranged on the two sides of the positioning block in the swing direction of the positioning block relative to the housing.

[0014] In one of the embodiments, the first sub-limiting member is a torsion spring, the torsion spring comprises a body and a first end and a second end connected to the body respectively, the body is connected to the housing, the first end is in abutment with the housing, and the second end is in abutment with the positioning block.

[0015] The second sub-limiting member is a protrusion arranged on the housing.

[0016] In one of the embodiments, the positioning block has a right-angle portion for abutting against the wiping belt.

[0017] In one of the embodiments, an elastic member is arranged on the positioning block, and the elastic member is used for abutting against the wiping belt.

[0018] In one of the embodiments, the belt box further comprises a first belt guide and a second belt guide, the first belt guide and the second belt guide are respectively arranged upstream and downstream of the positioning block in the movement direction of the wiping belt relative to the housing.

[0019] In one of the embodiments, the first belt guide and the second belt guide are arranged adjacent to the first opening.

[0020] In one of the embodiments, a second opening is further arranged on the housing and in communication with the receiving cavity, and the belt box further comprises a third belt guide, the third belt guide is arranged on the housing, and the wiping belt passes through the second opening and abuts against the third belt guide when being wound on the second winding member from the first winding member.

[0021] In one of the embodiments, the cross-sectional shape of the housing is rectangular, and the first opening is arranged at a right-angle vertex of the rectangle. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The structural diagram of the belt box provided by one of the embodiments of the present application;

[0023] Figure 2 The structural diagram of the belt box provided by one of the embodiments of the present application; Figure 1Structure diagram of the structure of the wiping belt of the tape cartridge abutting against the push piece shown in the figure;

[0024] Figure 3 For Figure 1 Perspective view of the tape cartridge shown in the figure;

[0025] Figure 4 For Figure 1 Another perspective view of the tape cartridge shown in the figure;

[0026] Figure 5 For Figure 1 Axonometric view of the positioning block and elastic member of the tape cartridge shown in the figure;

[0027] Figure 6 For Figure 1 Structure diagram of the partial structure of the tape cartridge shown in the figure.

[0028] 100, tape cartridge; 10, shell; 11, first opening; 12, second opening; 13, observation window; 14, pressing opening; 15, first half shell; 16, second half shell; 20, first winding member; 21, first mounting hole; 30, second winding member; 31, second mounting hole; 40, wiping belt; 41, wiping part; 50, positioning block; 51, right-angle part; 60, push piece; 71, first sub-limiting member; 72, second sub-limiting member; 81, first belt guide; 82, second belt guide; 83, third belt guide; 90, elastic member; 91, first abutting plane; 92, second abutting plane; 110, first shaft; 120, second shaft; 200, push piece. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present application more apparent and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0031] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and are not used to denote or imply relative importance or a number of the specified technical features. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0032] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0034] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0035] Figure 1 The structure diagram of the tape cartridge provided by an embodiment of the present application is shown; Figure 2 The structure diagram of the tape cartridge shown in Figure 1 The structure diagram of the tape cartridge shown in

[0036] Referring to Figure 1 An embodiment of the present application provides a tape cartridge 100, which can push the push piece 200 of the push piece mechanism (see Figure 2) to be cleaned. In order to facilitate the understanding of the present application, first of all, a brief introduction is made to the push piece mechanism, which generally comprises a mounting seat and a push piece 200, the push piece 200 being installed on the mounting seat, the push piece 200 having a push piece position and a cleaning position relative to the mounting seat. In the push piece position, the push piece 200 can be in contact with a slide, and when relative movement occurs between the push piece 200 and the slide, the push piece 200 can push the liquid (such as blood) in the form of drops flat to make a slide specimen; in the cleaning position, the push piece 200 can be in contact with the tape box 100, and the tape box 100 can clean the push piece 200 of the push piece mechanism.

[0037] Continuing to refer to Figure 1 , the tape box 100 comprises a shell 10, a first winding member 20 and a second winding member 30, the shell 10 is provided with a receiving cavity, and at least part of the first winding member 20 and the second winding member 30 is arranged in the receiving cavity. The tape box 100 further comprises a wiping tape 40, one end of the wiping tape 40 is connected with the first winding member 20, the other end of the wiping tape 40 is connected with the second winding member 20, and the wiping tape 40 can move relative to the shell 10 by means of the first winding member 20 and the second winding member 30.

[0038] The tape box 100 further comprises a positioning block 50, the positioning block 50 is arranged on the shell 10, and the shell 10 is further provided with a first opening 11 communicating with the receiving cavity, the wiping tape 40 passes through the first opening 11 and abuts against the positioning block 50 when being wound from the first winding member 20 to the second winding member 30.

[0039] The tape box 100 provided in the embodiment, when the push piece 200 of the push piece mechanism needs to be cleaned, the push piece 200 is in contact with the wiping tape 40, and under the action of the force applied by the push piece 200 to the wiping tape 40, the wiping tape 40 is clamped and positioned between the positioning block 50 and the push piece 200, so that the friction between the push piece 200 and the wiping tape 40 is increased, and under the condition that the friction between the push piece 200 and the wiping tape 40 is increased, the cleaning effect on the push piece 200 of the push piece mechanism is improved.

[0040] It should be noted that the wiping tape 40 passes through the first opening 11 and abuts against the positioning block 50 when being wound from the first winding member 20 to the second winding member 30 includes the following cases:

[0041] Referring to Figure 1In one embodiment, the wiping belt 40 is wound around the second winding member 30 from the first winding member 20, passes out of the accommodating cavity through the first opening 11, abuts against the positioning block 50, and re-enters the accommodating cavity through the first opening 11. In another embodiment, the wiping belt 40 is wound around the second winding member 30 from the first winding member 20, passes out of the accommodating cavity through the first opening 11, abuts against the positioning block 50, and re-enters the accommodating cavity through the other opening. In yet another embodiment, the wiping belt 40 is wound around the second winding member 30 from the first winding member 20, passes out of the accommodating cavity through the other opening, abuts against the positioning block 50, and re-enters the accommodating cavity through the first opening 11.

[0042] It is also to be noted that the wiping belt 40 is wound around the second winding member 30 from the first winding member 20, passes out of the accommodating cavity through the first opening 11, and abuts against the positioning block 50, which means that the wiping belt 40 abuts against part of the positioning block 50, so that the wiping belt 40 clamps the push piece 200 between the positioning block 50 and the push piece 200 when the push piece 200 is cleaned.

[0043] Continuing to refer to Figure 2 In one embodiment, the belt box 100 is capable of reciprocating in the width direction of the wiping belt 40 to clean the push piece 200 when the push piece 200 is cleaned. It is to be understood that in other embodiments, the belt box 100 can also reciprocate in other directions to clean the push piece 200, which is not limited herein.

[0044] In one embodiment, the shell 10 is a hollow cuboid structure, i.e., the cross-sectional shape of the shell 10 is rectangular, the first winding member 20 and the second winding member 30 are both flat and disc-shaped, the axial directions of the first winding member 20 and the second winding member 30 are parallel to the thickness direction of the shell 10, and the first winding member 20 and the second winding member 30 are arranged side by side in the shell 10.

[0045] Figure 3 A perspective view of the belt box shown in Figure 1 A perspective view of the belt box shown in Figure 4 A perspective view of the belt box shown in Figure 1 A perspective view of the belt box shown in Figure 5 A perspective view of the belt box shown in Figure 1 A perspective view of the positioning block and the elastic member of the belt box shown in Figure 6 A perspective view of the belt box shown in Figure 1 A structural view of the partial structure of the belt box shown in

[0046] Referring to Figure 3 and Figure 4 Specifically, the shell 10 includes a first half-shell 15 and a second half-shell 16 arranged separately, and the first half-shell 15 and the second half-shell 16 are spliced to form the shell 10. In this way, the first winding member 20, the second winding member 30, and the wiping belt 40 are facilitated to be assembled.

[0047] In one embodiment, the entire first winding member 20 and the second winding member 30 are disposed within the accommodating chamber. The first winding member 20 is provided with a first mounting hole 21, and the second winding member 30 is provided with a second mounting hole 31. The housing 10 is provided with a first through-hole at a position corresponding to the first mounting hole 21, and a second through-hole at a position corresponding to the second mounting hole 31. This arrangement facilitates an external drive mechanism to be disposed within the first mounting hole 21 through the first through-hole and within the second mounting hole 31 through the second through-hole, thereby driving the wiping tape 40 to rotate relative to the housing 10. It should be understood that in other embodiments, portions of the first winding member 20 and the second winding member 30 may be disposed within the accommodating chamber, with the remaining portion of the first winding member 20 extending through the first through-hole and the remaining portion of the second winding member 30 extending through the second through-hole to connect to the external drive mechanism, thereby driving the wiping tape 40 to rotate relative to the housing 10.

[0048] Furthermore, when the wiping tape 40 moves relative to the housing 10 , one of the first winding member 20 and the second winding member 30 for winding up the wiping tape 40 acts as an active member, and the other acts as a driven member by the pulling action of the wiping tape 40 .

[0049] For example, the external drive mechanism may include a drive motor and a passive shaft. The drive motor includes a main body and an active shaft. The active shaft passes through a first through-hole and is installed in the first mounting hole 21. The passive shaft passes through a second through-hole and is installed in the second mounting hole 31. The main body of the drive motor causes the active shaft to drive the first winding member 20 to perform a winding action. At this time, the second winding member 30 releases the wiping tape 40 under the pulling action of the wiping tape 40. In other words, the first winding member 20 serves as the active member, and the second winding member 30 serves as the passive member.

[0050] In another embodiment, the second winding member 30 may be connected to a drive motor, which drives the second winding member 30 to reel in the wiping tape 40. In this case, the first winding member 20 releases the wiping tape 40 under the pulling action of the wiping tape 40. In other words, the second winding member 30 serves as the active member and the second winding member 30 as the passive member.

[0051] Specifically, a plurality of wiping portions 41 are formed on the wiping belt 40 (see Figure 2 ), and the wiping belt 40 can move relative to the shell 10 with the help of the first winding member 20 and the second winding member 30, so that the multiple wiping parts 41 selectively abut against the positioning block 50, that is, each time the push piece 200 is wiped, a wiping part 41 is replaced to avoid cross infection.

[0052] Further, the wiping part 41 can carry the cleaning medium, and the cleaning medium is injected on the wiping part 41, and the cleaning medium dissolves the liquid adhered to the push piece 200, so as to further improve the cleaning effect of the push piece 200 of the push piece mechanism. Of course, in another embodiment, the cleaning medium can be directly injected on the push piece 200, and the cleaning medium dissolves the liquid adhered to the push piece 200, and the wiping part 41 only plays a wiping effect.

[0053] The type of the cleaning medium is not limited, for example, when the liquid on the slide 200 is blood pressure, the cleaning medium can be a solution capable of dissolving blood.

[0054] Continuing to refer to Figure 3 , the cassette 100 further comprises a push piece 60 with elasticity, and the push piece 60 is pressed on the driven part to prevent the driven part from rotating, so as to cause the wiping belt 40 to be automatically released from the driven part. In a specific embodiment, when all the driven parts are accommodated in the accommodation cavity, the shell 10 is further provided with a pressing opening 14 in communication with the accommodation cavity, and the push piece 60 is pressed on the driven part through the pressing opening 14.

[0055] In an embodiment, the first opening 11 is arranged at a right angle vertex of the shell 10, and the positioning block 50 is arranged at the same right angle vertex of the shell 10, and a right angle part 51 (see Figure 5 ) is formed on the positioning block 50, and the wiping part 41 can be bent under the action of the push piece 200 and abut against the right angle part 51, so as to position the wiping part 41 and the push piece 200, thereby facilitating wiping of the push piece 200.

[0056] Continuing to refer to Figure 1 , and referring to Figure 6 , in an embodiment, the positioning block 50 is pivotally connected with the shell 10, and the positioning block 50 can swing relative to the shell 10. Specifically, the positioning block 50 is pivotally connected with the shell 10 through the first shaft 110, and the rotation axis of the positioning block 50 relative to the shell 10 is parallel to the rotation axes of the first winding part 20 and the second winding part 30. Continuing to refer to Figure 1 , the cassette 100 further comprises a limiting part (not shown in the figure) for limiting the swing position of the positioning block 50 relative to the shell 10, and the limiting part comprises a first sub-limiting part 71 and a second sub-limiting part 72, which are respectively arranged on two sides of the positioning block 50 in the swing direction of the positioning block 50 relative to the shell 10. In this way, when the push piece 200 applies a force to the wiping part 41, since the positioning block 50 can rotate relative to the shell 10, the push piece 200 can push the wiping part 41 to abut against the right angle part 51, and the positioning of the wiping part 41 is facilitated, and the self-adaptability of the positioning block 50 is improved.

[0057] The first sub-limiting part 71 and / or the second sub-limiting part 72 has elasticity. When the first sub-limiting part 71 and / or the second sub-limiting part 72 has elasticity, the positioning block 50 can be automatically reset under the action of elastic restoring force when the push piece 200 releases the positioning block 50.

[0058] The first sub-limiting part 71 has elasticity, specifically, the first sub-limiting part 71 is a torsion spring, the torsion spring includes a body and first and second ends connected with the body respectively, and the body is connected with the shell 10. More specifically, the body is sleeved on the second shaft 120 protruding on the shell 10, the first end is in abutment with the shell 10, and the second end is in abutment with the positioning block 50. In this way, when the push piece 200 applies a force to the wiping belt 40, the positioning block 50 swings relative to the shell 10 under the driving of the wiping belt 40, and the positioning block 50 causes the torsion spring to elastically deform, thereby finely adjusting the position of the positioning block 50 relative to the shell 10, so as to facilitate the abutment of the push piece 200 and the wiping part 41 with the right-angle part 51, facilitate the positioning of the wiping part 41, and improve the self-adaptive ability of the positioning block 50.

[0059] The second sub-limiting part 72 is a protrusion protruding on the shell 10 to limit the position of the positioning block 50 relative to the shell 10 in cooperation with the first sub-limiting part 71. Specifically, the second sub-limiting part 72 protrudes on the second half shell 16.

[0060] Referring to Figure 5 In an embodiment, the positioning block 50 is provided with an elastic part 90, and the elastic part 90 is used to abut against the wiping belt 40. Further, the elastic part 90 has first and second abutment planes 91 and 92 located on both sides of the right-angle part 51 respectively, and the wiping belt 40 abuts against both the first and second abutment planes 91 and 92. In this way, when the push piece 200 needs to be cleaned, the elastic part 90 elastically deforms to apply an elastic restoring force to the push piece 200, so that the wiping belt 40 is more tightly clamped between the positioning block 50 and the push piece 200, the friction force between the push piece 200 and the wiping part 41 is increased, and the wiping effect is improved.

[0061] Specifically, the elastic part 90 is made of rubber material, and the elastic part 90 is integrally formed with the positioning block 50. It should be understood that in other embodiments, the elastic part 90 is not limited to being made of rubber, and the elastic part 90 can also be separately provided from the positioning block 50.

[0062] Referring to Figure 1 , Figure 4 and Figure 6In one embodiment, the belt box 100 further comprises a first belt guide 81 and a second belt guide 82, which are respectively arranged upstream and downstream of the positioning block 50 in the movement direction of the wiping belt 40 relative to the housing 10. In this way, when the wiping belt 40 enters or exits the first opening 11, the first belt guide 81 and the second belt guide 82 can limit the angle of the wiping belt 40 and facilitate the tensioning of the wiping belt 40. Specifically, the first belt guide 81 and the second belt guide 82 are both arranged adjacent to the first opening 11.

[0063] In one embodiment, the housing 10 further comprises a second opening 12 which is in communication with the receiving cavity, and the belt box 100 further comprises a third belt guide 83 which is arranged on the housing 10 and is abutted by the wiping belt 40 when the wiping belt 40 is wound from the first winding member 20 to the second winding member 30. In this way, the third belt guide 83 not only can support the wiping belt 40 together with the first belt guide 81 and the second belt guide 82, but also can cooperate with an external counting wheel to make the wiping belt 40 clamped between the counting belt guide 80 and the counting wheel. When the wiping belt 40 rotates relative to the housing 10, the counting wheel rotates under the frictional force exerted by the wiping belt 40, so as to count the number of rotations or the length of movement of the wiping belt 40.

[0064] In one specific embodiment, the third belt guide 83 and the positioning block 50 are respectively arranged at two right-angled vertices of the housing 10 in the length direction of the housing 10. Of course, in other embodiments, the arrangement positions of the counting belt guide 80 and the positioning block 50 are not limited.

[0065] Continuing to refer to Figure 1 Specifically, the housing 10 is provided with an observation window 13 through which the amount of the wiping belt 40 wound on the first winding member 20 and the second winding member 30 can be observed. It should be understood that, in other embodiments, in order to facilitate the observation of the amount of the wiping belt 40 wound on the first winding member 20 and the second winding member 30, the entire housing 10 can also be made of transparent material.

[0066] The technical features of the above-described embodiments can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0067] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A tape box, characterized in that: The tape box comprises: A housing provided with a receiving cavity; a first winding member and a second winding member at least partially disposed in the receiving cavity; a wiping belt, one end of which is connected to the first winding member, the other end of which is connected to the second winding member, and the wiping belt moves relative to the housing by means of the first winding member and the second winding member; and a positioning block provided on the housing, wherein the housing is further provided with a first opening communicating with the receiving cavity, and the wiping tape passes through the first opening and abuts against the positioning block when being wound from the first winding member to the second winding member; The tape cassette further includes a first tape guide and a second tape guide. In the moving direction of the wiping tape relative to the housing, the first tape guide and the second tape guide are respectively located upstream and downstream of the positioning block.

2. The tape cassette according to claim 1, wherein: The positioning block is pivotally connected to the housing, and the positioning block can swing relative to the housing.

3. The tape cassette according to claim 2, wherein: The shell also includes a limit member for limiting the swing position of the positioning block relative to the shell. The limit member is provided on the shell. The limit member includes a first sub-limit member and a second sub-limit member. In the swing direction of the positioning block relative to the shell, the first sub-limit member and the second sub-limit member are respectively located on both sides of the positioning block.

4. The tape cassette according to claim 3, wherein: The first sub-limiting member is a torsion spring, which includes a body and a first end and a second end respectively connected to the body, the body is connected to the housing, the first end abuts against the housing, and the second end abuts against the positioning block; The second sub-limiting member is a protrusion convexly provided on the housing.

5. The tape cassette according to claim 1, wherein: The positioning block has a right-angle portion, and the right-angle portion is used to abut against the wiping belt.

6. The tape cassette according to claim 1, wherein: An elastic member is provided on the positioning block, and the elastic member is used to abut against the wiping belt.

7. The tape cassette according to claim 6, wherein: The first tape guide and the second tape guide are both disposed adjacent to the first opening.

8. The tape cassette according to claim 1, wherein: The shell is also provided with a second opening connected to the accommodating cavity, and the tape box also includes a third tape guide, which is arranged on the shell. When the wiping tape is wound from the first winding member to the second winding member, it passes through the second opening and abuts against the third tape guide.

9. The tape cassette according to claim 1, wherein: The cross-section of the housing is a rectangle, and the first opening is arranged at a right-angled vertex of the rectangle.

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