Cold compress device for cerebral hemorrhage of hypertensive patient

Abstract

The invention discloses a cold compress device for cerebral hemorrhage of a hypertensive patient, and belongs to the field of cold compress cooling, the cold compress device comprises a cold compress cap, a cold compress cavity formed in the cold compress cap, a cold compress liquid bag arranged in the cold compress cavity, and a sealing cover arranged at the top of the cold compress cap; a supporting and positioning structure is arranged on the rear side of the cold compress cap. The supporting and positioning structure comprises a reinforcing plate and a first triangular inclined block arranged on the reinforcing plate. The reinforcing plate is provided with an adjusting structure used for adjusting the position of the first triangular inclined block. Through the first triangular inclined block in the supporting and positioning structure, the inclination angle of the head of the patient can be accurately and stably fixed, and the situation that dirt cannot be discharged due to the fact that the patient automatically adjusts the head position in an unconscious state is prevented. When the head of the patient is in an inclined state, dirt in the mouth can naturally flow out, and medical accidents such as suffocation and aspiration pneumonia caused by automatic resetting of the head are avoided.

Description

Technical Field

[0001] The present application relates to the technical field of cold compress cooling, and in particular to a cold compress device for treating cerebral hemorrhage in patients with hypertension. Background Art

[0002] Cerebral hemorrhage in patients with hypertension is an emergency that requires timely and effective treatment. As an auxiliary treatment method, cold compress devices control the amount of intracerebral hemorrhage by lowering the temperature of the patient's head, thus buying precious time for further treatment by medical staff. Existing cold compress devices, especially cold compress caps, have achieved certain results in design and application, but there are still some problems that need to be solved in actual application.

[0003] In particular, when a hypertensive patient suffers from cerebral hemorrhage and enters an unconscious state, in order to keep the patient's airway open, it is usually necessary to keep the patient's head at a certain tilt angle so that the dirt in the patient's mouth can be discharged smoothly. However, existing cold compress caps often overlook this point in design and use. Since the patient is in a state of weak consciousness or unconsciousness, they may unconsciously adjust the position of their head and straighten it, which directly leads to the inability to effectively discharge the dirt in the mouth, increasing the risk of medical accidents such as suffocation and aspiration pneumonia.

[0004] Therefore, the present application provides a cold compress device for cerebral hemorrhage in patients with hypertension to solve the above problems. Summary of the invention

[0005] The present application provides a cold compress device for cerebral hemorrhage in patients with hypertension, aiming to solve the problems raised in the background technology that the existing cold compress cap lacks a positioning structure and that the patients may unconsciously adjust the position of their heads to straighten them because they are in a state of weak consciousness or unconsciousness, which directly leads to the inability to effectively discharge dirt in the mouth, increasing the risk of medical accidents such as suffocation and aspiration pneumonia.

[0006] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a cold compress device for cerebral hemorrhage in patients with hypertension, comprising a cold compress cap, a cold compress cavity opened inside the cold compress cap, a cold compress liquid bag arranged in the cold compress cavity, and a sealing cover arranged on the top of the cold compress cap; a supporting positioning structure is arranged on the rear side of the cold compress cap, and the supporting positioning structure comprises a reinforcement plate and a first triangular bevel block arranged on the reinforcement plate; when in use, the cold compress cap is put on the patient's head, and the medical staff first adjusts the first triangular bevel block in the supporting positioning structure on the cold compress cap according to the inclination requirement of the patient's head, so that it fits tightly with the back of the patient's head, and fixes the position of the head to facilitate the discharge of dirt in the patient's mouth.

[0007] Preferably, in order to facilitate the adjustment of the patient's head tilt state: an adjustment structure for adjusting the position of the first triangular oblique block is provided on the reinforcement plate. The adjustment structure includes a limit groove provided in the reinforcement plate, a connecting groove provided on the outer side of the reinforcement plate and connected to the limit groove, a limit plate movably provided in the limit groove, and a connecting plate movably provided in the connecting groove and fixedly connected to the limit plate and the first triangular oblique block. The adjustment structure facilitates the adjustment of the position of the first triangular oblique block according to the patient's needs, and the friction between the limit groove and the limit plate can fix the position of the adjusted first triangular oblique block, thereby ensuring the stability of the patient's head tilt.

[0008] Preferably, in order to ensure the stability of the first triangular oblique block after the position is adjusted: the limit plate is provided with a locking structure, the locking structure includes a first vertical slot provided in the limit plate, the connecting plate and the first triangular oblique block, a lifting plate is movably provided in the first vertical slot, a plug rod fixedly connected to the lifting plate and a plurality of slots equidistantly provided in the limit slot for plugging the plug rod are slidably inserted in the limit plate. Through the locking structure, the position of the first triangular oblique block can be stably locked to prevent displacement during use, thereby ensuring the stability of the patient's head tilt.

[0009] Preferably, in order to release the locking state of the first triangular bevel block: the locking structure also includes a first driving rod inserted into the first triangular bevel block and fixedly connected to the lifting plate, and a first spring arranged between the end of the lifting plate away from the first driving rod and the first vertical groove. Medical staff only need to press the first driving rod to release the locking state, adjust the position of the first triangular bevel block, and automatically lock it after releasing it, which greatly improves the operating efficiency. The elastic force of the first spring ensures that the insertion rod can be stably inserted into the slot, and even if it is impacted by external force during use, it can maintain the locked state to ensure the safety of the patient.

[0010] Preferably, in order to facilitate the replacement of the cold compress liquid bag: the sealing cover is installed on the cold compress cap through an airtight zipper. The airtight zipper connection method allows medical staff to quickly and easily replace the cold compress liquid bag, greatly improving the efficiency of rescue work.

[0011] Preferably, in order to prevent the cold compress cap from frostbiting the patient's head: a protective pad is provided on the inner side of the cold compress cap, and the protective pad is fixed inside the cold compress cap by Velcro. The provision of the protective pad effectively isolates the direct contact between the cold compress liquid bag and the patient's head, greatly reduces the risk of frostbite, and provides a safer cold compress treatment environment for the patient.

[0012] Preferably, in order to make the cold compress cap fit the patient's head better: arc-shaped grooves adapted to the patient's ears are provided on both sides of the cold compress cap, and the back side of the cold compress cap is lower than the front side of the cold compress cap. The arc-shaped grooves ensure that the cold compress cap can fit the patient's ear contour closely. When the cold compress cap is worn on the patient's head, the arc-shaped grooves will naturally wrap around the patient's ears, thereby not only improving the stability of the cold compress cap, but also enhancing the wearing comfort.

[0013] Preferably, in order to facilitate the treatment of medical personnel so that the patient's face is set upward: the reinforcement plate is provided with an auxiliary clamping structure for auxiliary clamping of the patient's head, the auxiliary clamping structure includes a detachable second triangular oblique block arranged on the reinforcement plate, the second triangular oblique block is provided with a second vertical slot, the interior of the second vertical slot is provided with an L-clip plate for passing through the connecting slot and clamped in the limiting slot, a second driving rod plugged into the second triangular oblique block and fixedly connected to the L-clip plate, and a second spring is provided between the end of the L-clip plate away from the second driving rod and the second vertical slot. The design of the auxiliary clamping structure allows the patient's head to be flexibly adjusted to different positions as needed, especially ensuring that the patient's face can be set upward when needed, meeting the needs of different treatment scenarios.

[0014] The present application can accurately and stably fix the tilt angle of the patient's head by the first triangular inclined block in the supporting positioning structure, preventing the patient from automatically adjusting the head position due to unconsciousness, resulting in the inability to discharge dirt. When the patient's head is in a tilted state, the dirt in the mouth can flow out naturally, avoiding medical accidents such as suffocation and aspiration pneumonia caused by automatic resetting of the head.

[0015] The present application facilitates adjusting the position of the first triangular oblique block according to the patient's needs through the adjustment structure, and the position of the adjusted first triangular oblique block can be fixed by the friction force between the limit groove and the limit plate, thereby ensuring the stability of the patient's head tilt.

[0016] The present application can achieve stable locking of the position of the first triangular bevel block through the locking structure, prevent it from displacement during use, and ensure the stability of the patient's head tilt. Medical staff can release the locking state by simply pressing the first driving rod, adjust the position of the first triangular bevel block, and automatically lock it after releasing it, greatly improving the operating efficiency. The elastic force of the first spring ensures that the insertion rod can be stably inserted into the slot, and even if it is impacted by external force during use, it can remain locked to ensure the safety of the patient.

[0017] The design of the auxiliary clamping structure of the present application enables the patient's head to be flexibly adjusted to different positions as needed, especially ensuring that the patient's face can be set upward when needed, meeting the needs of different treatment scenarios. The coordinated use of the L-card plate, the second drive rod, and the second spring enables the second triangular bevel block to be stably fixed on the reinforcement plate. The detachable design of the second triangular bevel block enables medical staff to easily perform disassembly and installation operations, which is convenient and quick, and improves work efficiency. By adjusting the installation position of the second triangular bevel block, the patient's head can be tilted to either side, meeting the head position adjustment under different treatment needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The schematic diagram of the structure of a cold compress device for treating cerebral hemorrhage in patients with hypertension; Figure 2 A schematic diagram of a state where the cold compress cap is tilted toward its side; Figure 3 It is a structural schematic diagram of the supporting positioning structure, the adjusting structure and the locking structure; Figure 4 It is a structural schematic diagram of the reinforcement plate and the clamping structure; Figure 5 It is a structural cross-sectional view of a cold compress cap; Figure 6 This is a schematic diagram of the state in which the first triangular oblique block and the second triangular three blocks are symmetrically arranged.

[0019] In the figure: 1. Cold compress cap; 11. Cold compress cavity; 12. Arc groove; 2. Cold compress liquid bag; 3. Sealing cover; 4. Support and positioning structure; 41. Reinforcement plate; 42. First triangular oblique block; 5. Adjustment structure; 51. Limiting groove; 52. Connecting groove; 53. Limiting plate; 54. Connecting plate; 6. Locking structure; 61. First vertical groove; 62. Lifting plate; 63. Insert rod; 64. Slot; 65. First driving rod; 66. First spring; 7. Protective pad; 8. Clamping structure; 81. Second triangular oblique block; 82. Second vertical groove; 83. L-card plate; 84. Second driving rod; 85. Second spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0021] This embodiment provides a cold compress device for treating cerebral hemorrhage in patients with hypertension. Figure 1-6As shown, the cold compress device includes a cold compress cap 1, a cold compress cavity 11 opened inside the cold compress cap 1, a cold compress liquid bag 2 arranged in the cold compress cavity 11, and a sealing cover 3 arranged on the top of the cold compress cap 1; the cold compress liquid bag 2 fits the patient's head to ensure that the cold compress effect is uniform and lasting, which helps to lower the temperature inside the brain and control the amount of bleeding.

[0022] In order to facilitate the support and positioning of the patient's head in a tilted state: a support and positioning structure 4 is provided on the rear side of the cold compress cap 1, and the support and positioning structure 4 includes a reinforcement plate 41 and a first triangular bevel block 42 provided on the reinforcement plate 41; through the first triangular bevel block 42 in the support and positioning structure 4, the tilt angle of the patient's head can be accurately and stably fixed to prevent the patient from automatically adjusting the position of the head due to unconsciousness, resulting in the inability to discharge dirt. When the patient's head is in a tilted state, the dirt in the mouth can flow out naturally, avoiding medical accidents such as suffocation and aspiration pneumonia caused by automatic resetting of the head. When in use, the cold compress cap 1 is worn on the patient's head. The medical staff first adjusts the first triangular bevel block 42 in the support and positioning structure 4 on the cold compress cap 1 according to the tilt requirements of the patient's head, so that it fits tightly with the back of the patient's head, and fixes the position of the head to facilitate the discharge of dirt in the patient's mouth.

[0023] In order to facilitate the adjustment of the patient's head tilt state: the reinforcement plate 41 is provided with an adjustment structure 5 for adjusting the position of the first triangular oblique block 42. The adjustment structure 5 includes a limiting groove 51 provided in the reinforcement plate 41, a connecting groove 52 provided on the outer side of the reinforcement plate 41 and connected to the limiting groove 51, a limiting plate 53 movably provided in the limiting groove 51, and a connecting plate 54 movably provided in the connecting groove 52 and fixedly connected to the limiting plate 53 and the first triangular oblique block 42. The adjustment structure 5 facilitates the adjustment of the position of the first triangular oblique block 42 according to the patient's needs, and the friction between the limiting groove 51 and the limiting plate 53 can fix the position of the adjusted first triangular oblique block 42, thereby ensuring the stability of the patient's head tilt. When adjusting the position of the first triangular bevel block 42, one only needs to hold the first triangular bevel block 42, and use the first triangular bevel block 42 to drive the connecting plate 54 and the limiting plate 53 to move in the connecting groove 52 and the limiting groove 51, until the first triangular bevel block 42 is adjusted to a suitable position and then stopped moving. The friction force between the limiting groove 51 and the limiting plate 53 can fix the position of the adjusted first triangular bevel block 42, thereby ensuring the stability of the patient's head tilt.

[0024] In order to ensure the stability of the first triangular inclined block 42 after the position is adjusted: the limiting plate 53 is provided with a locking structure 6, which includes a first vertical slot 61 provided in the limiting plate 53, the connecting plate 54 and the first triangular inclined block 42, a lifting plate 62 is movably provided in the first vertical slot 61, and a plug rod 63 fixedly connected to the lifting plate 62 is slidably inserted on the limiting plate 53, and a plurality of slots 64 equidistantly provided in the limiting slot 51 for plugging the plug rod 63. In order to release the locked state of the position of the first triangular inclined block 42: the locking structure 6 also includes a first driving rod 65 inserted in the first triangular inclined block 42 and fixedly connected to the lifting plate 62, and a first spring 66 provided between the end of the lifting plate 62 away from the first driving rod 65 and the first vertical slot 61. Through the locking structure 6, the first triangular inclined block 42 can be stably locked to prevent displacement during use, thereby ensuring the stability of the patient's head tilt. The medical staff only needs to press the first driving rod 65 to release the locked state, adjust the position of the first triangular bevel block 42, and automatically lock it after releasing it, which greatly improves the operating efficiency. The elastic force of the first spring 66 ensures that the insertion rod 63 can be stably inserted into the slot 64, and even if it is impacted by external force during use, it can maintain the locked state to ensure the safety of the patient. When in use, the medical staff first holds the first triangular bevel block 42 and presses the first driving rod 65 according to the tilt requirements of the patient's head. The first driving rod 65 drives the lifting plate 62 to move downward in the first vertical groove 61, and at the same time squeezes the first spring 66 to contract and accumulate force. During the downward movement of the lifting plate 62, the insertion rod 63 is driven to disengage from the slot 64, and the position of the first triangular bevel block 42 can be adjusted at this time. When the position adjustment of the first triangular bevel block 42 is completed, the medical staff releases the pressure on the first driving rod 65. Under the elastic force of the first spring 66, the lifting plate 62 is quickly reset, driving the insertion rod 63 to be inserted into the corresponding slot 64 in the limiting groove 51, thereby locking the position of the first triangular bevel block 42. In this way, medical staff can conveniently adjust and stably lock the position of the first triangular bevel block 42 according to the tilt requirements of the patient's head, ensuring that the patient's head is at the best tilt angle, which is convenient for dirt discharge and cold compress treatment.

[0025] In order to facilitate the replacement of the cold compress liquid bag 2: the sealing cover 3 is installed on the cold compress cap 1 through an airtight zipper. The airtight zipper connection method allows medical staff to quickly and easily replace the cold compress liquid bag 2, greatly improving the efficiency of the rescue work.

[0026] In order to prevent the cold compress cap 1 from frostbiting the patient's head: a protective pad 7 is arranged on the inner side of the cold compress cap 1, and the protective pad 7 is fixed in the cold compress cap 1 by Velcro. The provision of the protective pad 7 effectively isolates the direct contact between the cold compress liquid bag 2 and the patient's head, greatly reduces the risk of frostbite, and provides a safer cold compress treatment environment for the patient. The protective pad 7 is made of soft and breathable materials (such as memory foam or special heat-insulating fabrics), which can fit the curve of the patient's head, provide a comfortable wearing experience, and reduce the patient's discomfort. The Velcro connection method enables the protective pad 7 to be easily removed from the cold compress cap 1 for cleaning or replacement, which is convenient and quick, and improves the hygiene and durability of the device. When in use, the medical staff wears the cold compress cap 1 on the patient's head. At this time, the protective pad 7 is located between the cold compress cap 1, the cold compress liquid bag 2 and the patient's head, which plays an effective heat-insulating role, preventing the low temperature of the cold compress liquid bag 2 from being directly transmitted to the patient's head, thereby avoiding the risk of frostbite. At the same time, since the protective pad 7 is made of soft and breathable materials, it can fit the curve of the patient's head and provide a comfortable wearing experience. When the protective pad 7 needs to be cleaned or replaced, the medical staff only needs to gently tear off the Velcro to remove the protective pad 7 from the cold compress cap 1, and then clean or replace it. After completion, the new or cleaned protective pad 7 is fixed in the cold compress cap 1 through the Velcro.

[0027] In order to make the cold compress cap 1 fit the patient's head better: arc grooves 12 adapted to the patient's ears are provided on both sides of the cold compress cap 1, and the back side of the cold compress cap 1 is lower than the front side of the cold compress cap 1. The arc groove 12 ensures that the cold compress cap 1 can fit the patient's ear contour closely. When the cold compress cap 1 is worn on the patient's head, the arc groove 12 will naturally wrap the patient's ear, thereby not only improving the stability of the cold compress cap 1, but also enhancing the comfort of wearing. In addition, the present invention also adopts a design in which the back side of the cold compress cap 1 is lower than the front side. This design enables the cold compress cap 1 to naturally fit the curve of the patient's head when worn, especially the back of the head, and can ensure that the back of the cold compress cap 1 fits closely with the patient's head, further improving the cold compress effect. When in use, the cold compress cap 1 is gently worn on the patient's head to ensure that the arc groove 12 fits closely with the patient's ear contour. Since the back side of the cold compress cap 1 is lower than the front side, it will naturally fit the back of the patient's head to form a close fitting surface. Next, as the temperature of the cold compress liquid bag 2 decreases, it will transfer the low temperature to the patient's head through the cold compress cap 1, thereby achieving the purpose of cold compress treatment.

[0028] In order to facilitate the treatment of the medical staff, the patient's face is set upward: the reinforcement plate 41 is provided with an auxiliary clamping structure 8 for auxiliary clamping of the patient's head, and the auxiliary clamping structure 8 includes a detachable second triangular oblique block 81 set on the reinforcement plate 41, a second vertical slot 82 is provided on the second triangular oblique block 81, an L card plate 83 for passing through the connecting slot 52 and clamped in the limit slot 51 is provided inside the second vertical slot 82, a second driving rod 84 plugged into the second triangular oblique block 81 and fixedly connected to the L card plate 83, and a second spring 85 is provided between the end of the L card plate 83 away from the second driving rod 84 and the second vertical slot 82. The design of the auxiliary clamping structure 8 enables the patient's head to be flexibly adjusted to different positions as needed, especially to ensure that the patient's face can be set upward when needed, meeting the needs of different treatment scenarios. Through the coordinated use of the L card plate 83, the second driving rod 84 and the second spring 85, the second triangular oblique block 81 is stably fixed on the reinforcement plate 41. The detachable design of the second triangular oblique block 81 enables medical staff to easily disassemble and install the operation, which is convenient and fast, and improves work efficiency. By adjusting the installation position of the second triangular oblique block 81, the patient's head can be tilted to either side, which meets the head position adjustment under different treatment needs. When in use, the medical staff first determines the inclination angle of the patient's head according to the treatment needs. If the patient's face needs to be set up, ensure that the first triangular oblique block 42 and the second triangular oblique block 81 are symmetrically arranged along the axis of the cold compress cap 1. At this time, the L card plate 83 is stably clamped in the limit groove 51 on the reinforcing plate 41 under the elastic force of the second spring 85, ensuring the stability of the position of the second triangular oblique block 81. If the inclination angle of the patient's head needs to be adjusted, the medical staff can hold the second triangular oblique block 81 and then press the second drive rod 84. The second drive rod 84 drives the L card plate 83 to move to the other side of the second vertical slot 82, while squeezing the second spring 85 to shrink and store force. When the L-cage plate 83 can be taken out from the limiting groove 51 and the connecting groove 52, the medical staff can remove the second triangular bevel block 81 from the reinforcing plate 41 and reinstall it on the two sides of the reinforcing plate 41 corresponding to the first triangular bevel block 42. At this time, the second driving rod 84 is released, and under the elastic force of the second spring 85, the L-cage plate 83 is stably clamped in the limiting groove 51 on the reinforcing plate 41 again, so that the new position of the second triangular bevel block 81 is fixed.

[0029] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical solution and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A cold compress device for treating cerebral hemorrhage in patients with hypertension, comprising a cold compress cap (1), a cold compress cavity (11) provided inside the cold compress cap (1), a cold compress liquid bag (2) arranged in the cold compress cavity (11), and a sealing cover (3) arranged on the top of the cold compress cap (1); Features: A supporting and positioning structure (4) is provided on the rear side of the cold compress cap (1), wherein the supporting and positioning structure (4) comprises a reinforcing plate (41) and a first triangular inclined block (42) provided on the reinforcing plate (41); The reinforcing plate (41) is provided with an adjustment structure (5) for adjusting the position of the first triangular inclined block (42).

2. The cold compress device for treating cerebral hemorrhage in patients with hypertension according to claim 1, characterized in that: The adjustment structure (5) comprises a limit groove (51) provided in the reinforcing plate (41), a connecting groove (52) provided on the outer side of the reinforcing plate (41) and connected to the limit groove (51), a limit plate (53) movably arranged in the limit groove (51), and a connecting plate (54) movably arranged in the connecting groove (52) and fixedly connected to the limit plate (53) and the first triangular inclined block (42).

3. The cold compress device for treating cerebral hemorrhage in patients with hypertension according to claim 2, characterized in that: The limiting plate (53) is provided with a locking structure (6), the locking structure (6) comprising a first vertical slot (61) provided in the limiting plate (53), the connecting plate (54) and the first triangular inclined block (42), a lifting plate (62) being movably provided in the first vertical slot (61), an insertion rod (63) fixedly connected to the lifting plate (62) being slidably plugged into the limiting plate (53), and a plurality of slots (64) equidistantly provided in the limiting slot (51) for plugging the insertion rod (63).

4. The cold compress device for treating cerebral hemorrhage in patients with hypertension according to claim 3, characterized in that: The locking structure (6) further comprises a first driving rod (65) inserted into the first triangular inclined block (42) and fixedly connected to the lifting plate (62), and a first spring (66) arranged between an end of the lifting plate (62) away from the first driving rod (65) and the first vertical groove (61).

5. The cold compress device for treating cerebral hemorrhage in patients with hypertension according to claim 1, characterized in that: The sealing cover (3) is mounted on the cold compress cap (1) via an airtight zipper.

6. The cold compress device for treating cerebral hemorrhage in patients with hypertension according to claim 1, characterized in that: A protective pad (7) is provided on the inner side of the cold compress cap (1), and the protective pad (7) is fixed inside the cold compress cap (1) by means of Velcro.

7. The cold compress device for treating cerebral hemorrhage in patients with hypertension according to claim 1, characterized in that: Both sides of the cold compress cap (1) are provided with arc-shaped grooves (12) adapted to the patient's ears, and the rear side of the cold compress cap (1) is lower than the front side of the cold compress cap (1).

8. The cold compress device for treating cerebral hemorrhage in patients with hypertension according to claim 1, characterized in that: The reinforcing plate (41) is provided with an auxiliary clamping structure (8) for auxiliary clamping of the patient's head, the auxiliary clamping structure (8) comprising a detachable second triangular oblique block (81) provided on the reinforcing plate (41), the second triangular oblique block (81) being provided with a second vertical slot (82), an L-clip plate (83) for passing through the connecting slot (52) and being clamped in the limiting slot (51) being provided inside the second vertical slot (82), a second driving rod (84) plugged into the second triangular oblique block (81) and fixedly connected to the L-clip plate (83), and a second spring (85) being provided between an end of the L-clip plate (83) away from the second driving rod (84) and the second vertical slot (82).

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