A rotary correction tape with self-guiding writing function

Abstract

The present invention relates to a rotary correction tape with self-guided writing, comprising: an outer shell, which is a tubular structure with two ends connected, and a receiving part is formed on the inner side of the outer shell; a connecting part, which is movably arranged in the outer shell, passes through the receiving part, and can slide relative to the receiving part; a belt core, which is movably arranged in the outer shell, and a connecting head is formed at one end of the belt core, which is inserted into the connecting part and clamped, and can rotate in the connecting part; a belt nozzle, which is connected to the belt core, comprises a belt guide part and a transmission rod arranged on both sides of the belt guide part, and a force-bearing part is formed on the transmission rod, and the force-bearing part is located on the central horizontal plane of the belt nozzle; when the force-bearing part contacts the working end surface, the force-bearing part will transmit the force on the force-bearing part to the belt guide part through the transmission rod, and the transmitted force is perpendicular to the central horizontal plane, so that the torque is large and the resistance is small when the belt nozzle rotates.

Description

Technical Field

[0001] The invention relates to the field of tools for correcting erroneous text, in particular to a rotary correction tape with self-guiding writing function. Background Art

[0002] Because correction tape doesn't damage the paper's surface fibers and doesn't require the drying time required by correction fluid, it's a popular choice for correcting erroneous text. A typical correction tape device, for example, consists of a housing and a tape guide nozzle located at the front end of the housing. The housing houses a tape feed assembly, which includes at least a feed reel and a take-up reel connected to each other, for feeding and receiving a correction tape, which is then wound around the tape guide nozzle. During use, the tape guide nozzle, along with the correction tape, is pressed flat against a surface to be applied. The pressure on the correction tape causes it to adhere to the surface, covering up erroneous text or images, allowing the text or images to be rewritten on the correction tape.

[0003] However, when using existing correction tapes, the user needs to manually adjust the gripping position of the correction tape to ensure that the tape nozzle can completely fit the working position, which is inconvenient for the user. In addition, the tape nozzle is usually fixed in the outer shell and does not move. During the correction process, the wrist needs to maintain a certain posture to ensure that the tape nozzle presses the tape head to fit the working surface, which makes the wrist stiff and inflexible during correction, affecting the correction experience. Summary of the Invention

[0004] The object of the present invention is to provide a rotary correction tape with self-guiding writing to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A rotary correction tape with self-guiding writing, comprising:

[0007] An outer shell is a tubular structure with two ends connected, and a receiving member is formed on the inner side of the outer shell;

[0008] a connecting member movably disposed in the outer shell, passing through the receiving member, and capable of sliding relative to the receiving member;

[0009] A belt core is movably disposed in the outer shell, and a connector is formed at one end of the belt core. The connector is inserted into the connector and fixed therein, and the connector can rotate within the connector;

[0010] a belt nozzle connected to the belt core, comprising a belt guide portion and transmission rods provided on both sides of the belt guide portion, wherein a force-bearing portion is formed on the transmission rod, the force-bearing portion is located on the central horizontal plane of the belt nozzle, and the connection portion between the transmission rod and the belt guide portion is located above the central horizontal plane of the belt nozzle, and when the force-bearing portion contacts the working end surface, the force on the force-bearing portion is transmitted to the connection portion through the transmission rod, and the transmitted force is perpendicular to the central horizontal plane;

[0011] A pressing portion is inserted into the outer shell and protrudes from one end of the outer shell. The pressing portion is connected to the connecting piece. When pressing force is applied to the pressing portion, the connecting piece is linked to push the belt core to move, and the belt mouth protrudes from the outer shell or is brought back from the outside of the outer shell.

[0012] The rotary correction tape with self-guided writing as described above: the force-bearing portion is arranged in a spherical structure, and when the force-bearing portion contacts the paper, it is in a point contact state.

[0013] As described above, the rotary correction tape with self-guiding writing is provided with a plurality of elastic snap-fitting parts adapted to the connecting head on the inner side of the connecting part, and the plurality of elastic snap-fitting parts are evenly arranged in the radial direction of the inner wall of the connecting part to generate deformation when the connecting head is squeezed, so that the connecting head can pass through and be connected and fixed.

[0014] As described above, the rotary correction tape with self-guided writing: the middle part of the elastic engaging member is arranged in an arc-shaped structure, and both ends are fixed to the connecting member, and a deformation space for elastic deformation of the elastic engaging member is formed between the middle position of the elastic engaging member and the inner wall of the connecting member, and the elastic engaging member is formed with a middle surface, a lower end surface and a tapered surface.

[0015] As described above, the rotary correction tape with self-guided writing: the connecting head includes a card-releasing head and a limiting member fixed to the tape core, the limiting member and the card-releasing head are integrally formed, wherein the card-releasing head is arranged in a conical structure, and a conical portion is formed on the side of the card-releasing head facing the tape core. When the card-releasing head is placed on the elastic engaging member, the conical portion on the card-releasing head is engaged with the conical surface on the elastic engaging member, and the middle surface on the elastic engaging member does not contact the connecting head.

[0016] As described above, the rotary correction tape with self-guided writing: the connecting piece is formed with an arc portion at the inner end facing the tape core, and the arc portion forms a ring-like structure at the end of the connecting piece. The limiting piece is arranged in a hemispherical structure. When the connecting head is engaged with the elastic engaging piece, the limiting piece abuts against the arc portion and is in a linear contact state.

[0017] The rotary correction tape with self-guided writing as described above: the pressing portion includes:

[0018] a guide chute member detachably fixed in the outer shell, the guide chute member being formed with a first guide groove and a second guide groove having staggered sections and tooth-shaped ends, the first guide groove and the second guide groove having different lengths;

[0019] a rotating wheel, movably arranged on the inner side of the guide chute member and abutting against the connecting member, wherein the outer wall of the rotating wheel is evenly provided with a plurality of wedge-shaped teeth adapted to the tooth structure in the longitudinal direction;

[0020] a pressing head movably disposed in the guide slide member and in contact with the rotating wheel, for driving the rotating wheel to move and cooperating with the tooth structure to rotate the rotating wheel;

[0021] An elastic member is disposed in the outer shell and connected to the receiving member and the connecting member.

[0022] As described above, the rotary correction tape with self-guided writing: a first boss and a second boss are respectively formed on both sides of the rotating wheel along its axial direction, and the first boss and the second boss are respectively inserted into the inner side of the push head and the connecting member, and can move relative to the push head and the connecting member.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: the correction tape provided by the present invention realizes the self-guiding rotation function of the belt mouth during correction of the correction tape through the setting of the force-bearing part, transmission rod, connecting part, connecting head, connecting piece and the cooperation between them, and through the spherical point connection of the force-bearing part and the annular line connection of the connecting head and connecting piece, the friction between the components during correction is reduced to the greatest extent, ensuring the smoothness of the self-guiding rotation action without jamming. At the same time, the offset setting of the connecting part makes the force transmitted to the connecting part during correction maximum and perpendicular to the center horizontal plane, the self-guiding rotation action has the maximum torque, the minimum resistance, and correction is more labor-saving. The self-guided positive rotation function of the correction tape enables the pressing head and the work surface to have a highly adaptive fit. During correction, the core tape and the paper fit tightly, greatly improving the correction quality. At the same time, during the correction process, the outer shell can rotate relative to the tape mouth and the core tape, allowing the wrist to bend and stretch freely without affecting the fit between the pressing head and the work surface, solving the problem of stiff and inflexible wrist during correction with existing correction tapes, and providing a more comfortable and smooth correction experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a rotary correction tape with self-guiding writing when the tape mouth protrudes from the outer shell.

[0025] Figure 2 This is a schematic diagram of the structure of a rotary correction tape with self-guiding writing when the tape mouth is retracted into the outer shell.

[0026] Figure 3 A front view of a rotary correction tape with self-guiding writing.

[0027] Figure 4 for Figure 3 Cross-section view in the AA direction.

[0028] Figure 5 This is a schematic diagram of the structure of a rotary correction tape with self-guiding writing in a state where the outer shell is separated.

[0029] Figure 6 This is an exploded view of the structure of a rotary correction tape with self-guiding writing.

[0030] Figure 7 This is an exploded view of the structure of the rotary correction tape with self-guiding writing from another angle.

[0031] Figure 8 An exploded half-section view of a rotary correction tape structure with self-guided writing.

[0032] Figure 9 A bottom view of the connector in a rotary correction tape with self-guiding writing.

[0033] Figure 10 for Figure 9 Cross-sectional view along the BB direction.

[0034] Figure 11 The figure is a schematic diagram of the structure of the connecting parts in a rotary correction tape with self-guiding writing.

[0035] Figure 12 The present invention is a schematic diagram of the structure of the nozzle of a rotary correction tape with self-guiding writing.

[0036] Figure 13 for Figure 4 Enlarged view of the structure at point C in the middle.

[0037] Figure 14 This figure shows the position of a rotary correction tape with self-guiding writing when it is tilted relative to the working end surface.

[0038] Figure 15 This is a three-dimensional diagram of the position state of a rotary correction tape with self-guiding writing when it is tilted relative to the working end surface.

[0039] Figure 16 This is a three-dimensional diagram from another angle showing the position of a rotary correction tape with self-guiding writing when it is tilted relative to the working end surface.

[0040] Figure 17 A side view of the nozzle of a rotary correction tape with self-guiding writing.

[0041] In the figure: 1. First shell; 2. Second shell; 3. Belt mouth; 301. Force-bearing part; 302. Transmission rod; 303. Belt guide part; 304. Connecting part; 4. Pressing head; 5. Rotating wheel; 6. Connecting member; 7. Spring; 8. Guide slide member; 9. Belt core; 10. Connecting head; 11. Receiver; 12. Elastic engaging member; 1201. Middle surface; 1202. Lower end surface; 1203. Conical surface; 13. Arc-shaped part; 14. Limiting member; 15. Release head; 1501. Conical part. DETAILED DESCRIPTION

[0042] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0043] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0044] In addition, numerous specific details are provided in the following specific examples to better illustrate the present application. Those skilled in the art will appreciate that the present application can be practiced without certain specific details. In some instances, methods, means, and components well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present application.

[0045] See also Figures 1 to 8 and Figure 12 In an embodiment of the present invention, a rotary correction tape with self-guided writing includes: an outer shell, a connecting member 6, a tape core 9, a tape mouth 3 and a pressing portion.

[0046] The outer shell is a tubular structure with two ends connected. For example, in a specific embodiment, the outer shell includes a first shell 1 and a second shell 2. A receiving part 11 is formed on the inner side of the first shell 1. The first shell 1 and the second shell 2 are threadedly connected or clamped.

[0047] A connecting member 6 is also movably provided on the inner side of the outer shell. The connecting member 6 passes through the through slot provided on the receiving member 11 and can move and rotate relative to the receiving member 11. Exemplarily, the connecting member 6 is a hollow tubular structure.

[0048] The belt core 9 is connected to the belt nozzle 3 and is movably arranged in the outer shell. A connector 10 is formed at one end of the belt core 9. The connector 10 is inserted into the connector 6 and fixed thereto. The connector 10 can rotate in the connector 6. The belt nozzle 3 includes a belt guide portion 303 and a transmission rod 302 provided on both sides of the belt guide portion 303. A force-bearing portion 301 is formed on the transmission rod 302. The force-bearing portion 301 is located on the central horizontal plane of the belt nozzle 3. Please refer to Figure 17 The connecting portion 304 between the transmission rod 302 and the guide belt portion 303 is located above the center horizontal plane of the belt nozzle 3. Figure 14 When the force-bearing part 301 contacts the working end surface, the force-bearing part 301 will transmit the force on the force-bearing part 301 to the connecting part 304 through the transmission rod 302, and the transmitted force is perpendicular to the center horizontal plane, so that the torque is maximized and the resistance is minimized when the belt mouth 3 rotates, making the guiding rotation action smoother and no jamming occurs.

[0049] For example, see Figure 14-16 The force-bearing part 301 is arranged in a spherical structure. When the force-bearing part 301 contacts the paper, it is in a point contact state. During correction, when the force-bearing part 301 contacts the paper, the correction tape is manually driven to press downward, and the force-bearing part 301 will slide relative to the paper, while driving the belt mouth 3 and the belt core 9 to rotate and guide until the pressure head of the guide belt part 303 is in contact with the paper, and the guiding action is completed. Since there is point contact between the force-bearing part 301 and the paper, the friction between the force-bearing part 301 and the paper is small, thereby reducing the resistance encountered by the force-bearing part 301 when sliding, making the self-guiding rotation action naturally smoother.

[0050] The pressing portion is inserted into the outer shell and protrudes from one end of the outer shell. The pressing portion is connected to the connecting piece 6. When pressing force is applied to the pressing portion, the connecting piece 6 is linked to push the belt core 9 to move, and the belt mouth 3 protrudes from the outer shell or is brought back from the outside of the outer shell, so that the belt mouth 3 protrudes from the outer shell when in use and is retracted into the inner side of the outer shell when not in use, thereby achieving effective protection of the belt mouth 3.

[0051] In some embodiments of the present invention, see Figure 9 、 10, 11. The inner side of the connecting member 6 is provided with a plurality of elastic snap-fitting members 12 adapted to the connecting head 10. The plurality of elastic snap-fitting members 12 are evenly arranged in the radial direction of the inner wall of the connecting member 6 to generate deformation when the connecting head 10 is squeezed, so that the connecting head 10 can pass through and be connected and fixed. Exemplarily, the middle part of the elastic snap-fitting member 12 is arranged in an arc-shaped structure, and both ends are fixed on the connecting member 6, and a deformation space for the elastic snap-fitting member 12 to elastically deform is formed between the middle position of the elastic snap-fitting member 12 and the inner wall of the connecting member 6. The elastic snap-fitting member 12 is formed with a middle surface 1201, a lower end surface 1202 and a tapered surface 1203.

[0052] The connector 10 includes a card-releasing head 15 and a limiting member 14 fixed to the belt core 9, wherein the limiting member 14 and the card-releasing head 15 are integrally formed, wherein the card-releasing head 15 is arranged in a conical structure so that when the connector 10 is engaged with the elastic engaging member 12, an inclined extrusion force is generated on the elastic engaging member 12, which facilitates the deformation of the elastic engaging member 12, thereby facilitating the insertion of the connector 10 into the inner side of the connector 6. The card-releasing head 15 is formed with a tapered portion 1501 on the side facing the belt core 9. When the card-releasing head 15 is engaged with the elastic engaging member 12, the tapered portion 1501 on the card-releasing head 15 is engaged with the tapered surface 1203 on the elastic engaging member 12, and at this time, the middle surface 1201 on the elastic engaging member 12 does not contact the connector 10, thereby reducing the friction between the connector 10 and the connector when the belt core 9 rotates relative to the connector 6, making the self-guided rotation action smoother.

[0053] See also Figure 13 The connector 6 is formed with an arc-shaped portion 13 at the inner end thereof facing the belt core 9, and the arc-shaped portion 13 forms a ring-like structure at the end of the connector 6. When the connector 10 is clamped with the elastic engaging member 12, the limiting member 14 abuts against the arc-shaped portion 13. For example, in a specific embodiment, the limiting member 14 is arranged in a hemispherical structure. On the one hand, it can withstand the force transmitted by the belt mouth 3 during correction, and at the same time limit the connector 10 and the connector 6 to only perform relative rotational movement. On the other hand, it makes the connector 10 and the connector 6 form a line contact, reduces the contact area between the connector 10 and the connector 6, thereby reducing friction and making the self-guided rotation action smoother.

[0054] When the connector 10 is placed inside the connector 6 , the tapered portion 1501 formed on the placing head 15 engages with the tapered surface on the elastic engaging member 12 , and at this time, the limiting member 14 abuts against the arc portion 13 , thereby forming a connection state.

[0055] The pressing portion includes:

[0056] a guide chute member 8 detachably fixed in the outer shell, the guide chute member 8 being formed with a first guide groove and a second guide groove having staggered sections and tooth-shaped ends, the first guide groove and the second guide groove having different lengths;

[0057] a rotating wheel 5, movably arranged on the inner side of the guide chute member 8 and abutting against the connecting member 6, wherein the outer wall of the rotating wheel 5 is evenly provided with a plurality of wedge-shaped teeth adapted to the tooth structure in the longitudinal direction;

[0058] a push head 4 movably disposed in the guide slide member 8 and in contact with the rotating wheel 5 to drive the rotating wheel 5 to move and cooperate with the tooth structure to rotate the rotating wheel 5;

[0059] An elastic member is provided in the outer shell and connects the receiving member 11 and the connecting member 6. For example, in a specific embodiment, the elastic member is a spring 7, which is sleeved on the outside of the connecting member 6, and the two ends of the spring 7 are respectively in contact with the receiving member 11 and the extension member formed on the outside of the connecting member 6.

[0060] It should be noted that a snap ring is provided on the receiving member 11, and a plurality of wedge-shaped teeth are formed on the outer wall of the guide slide member 8. When the guide slide member 8 is installed, the wedge-shaped teeth are engaged with the snap ring to fix the guide slide member 8.

[0061] Of course, the pressing portion described above is substantially the same as the existing pressing structure, and therefore, the present invention will not further describe it in detail.

[0062] A first boss and a second boss are respectively formed on both sides of the rotating wheel 5 along its axial direction. The first boss and the second boss are respectively inserted into the inner sides of the push head 4 and the connecting member 6, and can move relative to the push head 4 and the connecting member 6, thereby achieving the stability of the connection between the rotating wheel 5 and the push head 4 and the connecting member 6.

[0063] In summary, the correction tape provided by the present invention realizes the self-guiding rotation function of the belt mouth 3 during correction of the correction tape through the arrangement of the force-bearing part 301, the transmission rod 302, the connecting part 304, the connecting head 10, the connecting piece 6 and other components and the cooperation between them. The spherical point connection of the force-bearing part 301 and the annular line connection of the connecting head 10 and the connecting piece 6 are used to minimize the friction between the components during correction, ensuring that the self-guiding rotation action is smooth and without jamming. At the same time, the offset setting of the connecting part 304 makes the force transmitted to the connecting part 304 during correction maximum and perpendicular to the center horizontal plane, the self-guiding rotation action has the maximum torque and the minimum resistance, and correction is more labor-saving. The self-guiding positive rotation function of the correction tape enables the pressing head and the working surface to have a high degree of adaptive fitting ability. During correction, the core tape and the paper are tightly fitted, which greatly improves the correction quality. At the same time, during the correction process, the outer shell can be rotated relative to the belt mouth 3 and the core tape 9, so that the wrist can bend and stretch freely without affecting the fit between the pressing head and the working surface, solving the problem of stiff and inflexible wrist during correction with existing correction tapes, and making the correction experience more comfortable and smooth.

[0064] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0065] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A rotary correction tape with self-guiding writing, characterized in that: include: An outer shell is a tubular structure with two ends connected, and a receiving member (11) is formed on the inner side of the outer shell; a connecting member (6) movably disposed in the outer shell, passing through the receiving member (11), and capable of sliding relative to the receiving member (11); A belt core (9) is movably arranged in the outer shell, and a connector (10) is formed at one end of the belt core (9). The connector (10) is inserted into the connector (6) and fixed by clamping, and the connector (10) can rotate in the connector (6); A belt mouth (3) connected to the belt core (9), comprising a belt guide portion (303) and a transmission rod (302) provided on both sides of the belt guide portion (303); a force-bearing portion (301) is formed on the transmission rod (302); the force-bearing portion (301) is located on the central horizontal plane of the belt mouth (3); a connecting portion (304) between the transmission rod (302) and the belt guide portion (303) is located above the central horizontal plane of the belt mouth (3); when the force-bearing portion (301) contacts the working end face, the force-bearing portion (301) transmits the force on the force-bearing portion (301) to the connecting portion (304) through the transmission rod (302), and the transmitted force is perpendicular to the central horizontal plane; A pressing portion is inserted into the outer shell and protrudes from one end of the outer shell. The pressing portion is connected to the connecting piece (6). When pressing force is applied to the pressing portion, the connecting piece (6) is linked to push the belt core (9) to move, and the belt mouth (3) protrudes from the outer shell or is brought back from the outside of the outer shell.

2. A rotary correction tape with self-guiding writing according to claim 1, characterized in that: The force-bearing portion (301) is arranged in a spherical structure, and when the force-bearing portion (301) contacts the paper, a point contact state is formed.

3. The rotary correction tape with self-guiding writing according to claim 1, characterized in that: The inner side of the connecting piece (6) is provided with a plurality of elastic engaging pieces (12) adapted to the connecting head (10), and the plurality of elastic engaging pieces (12) are evenly arranged in the radial direction of the inner wall of the connecting piece (6) so as to generate deformation when the connecting head (10) is squeezed, allowing the connecting head (10) to pass through and be connected and fixed.

4. A rotary correction tape with self-guiding writing according to claim 3, characterized in that: The middle portion of the elastic engaging member (12) is arranged in an arc-shaped structure, with both ends fixed to the connecting member (6), and a deformation space for elastic deformation of the elastic engaging member (12) is formed between the middle position of the elastic engaging member (12) and the inner wall of the connecting member (6), and the elastic engaging member (12) is formed with a middle surface (1201), a lower end surface (1202) and a tapered surface (1203).

5. The rotary correction tape with self-guiding writing according to claim 4, characterized in that: The connector (10) includes a clipping head (15) and a limiting member (14) fixed to the belt core (9), wherein the limiting member (14) and the clipping head (15) are integrally formed, wherein the clipping head (15) is arranged in a conical structure, and a conical portion (1501) is formed on the side of the clipping head (15) facing the belt core (9). When the clipping head (15) is clipped onto the elastic clip (12), the conical portion (1501) on the clipping head (15) is clipped onto the conical surface (1203) on the elastic clip (12), and the middle surface (1201) on the elastic clip (12) does not come into contact with the connector (10).

6. A rotary correction tape with self-guiding writing according to claim 5, characterized in that: The connector (6) is formed with an arc portion (13) at the inner end of the belt core (9), and the arc portion (13) forms a ring-like structure at the end of the connector (6). The limiting member (14) is arranged in a hemispherical structure. When the connector (10) is engaged with the elastic engaging member (12), the limiting member (14) abuts against the arc portion (13) and is in a linear contact state.

7. The rotary correction tape with self-guiding writing according to claim 1, characterized in that: The pressing portion includes: a guide slot member (8) detachably fixed in the outer shell, wherein the guide slot member (8) is formed with a first guide slot and a second guide slot having staggered sections and tooth-shaped ends, and the first guide slot and the second guide slot have different lengths; A rotating wheel (5) is movably arranged on the inner side of the guide chute member (8) and abuts against the connecting member (6), and a plurality of wedge-shaped teeth adapted to the tooth-shaped structure are evenly arranged on the outer wall of the rotating wheel (5) in the longitudinal direction; a pressing head (4) movably disposed in the guide slide member (8) and in contact with the rotating wheel (5) for driving the rotating wheel (5) to move and cooperate with the toothed structure to rotate the rotating wheel (5); An elastic member is disposed in the outer shell and is connected to the receiving member (11) and the connecting member (6).

8. The rotary correction tape with self-guiding writing according to claim 7, characterized in that: A first convex column and a second convex column are respectively formed on both sides of the rotating wheel (5) along its axial direction. The first convex column and the second convex column are respectively inserted into the inner side of the pressing head (4) and the connecting member (6), and can move relative to the pressing head (4) and the connecting member (6).

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