Clamping device

Abstract

A clamping device comprises a first rotating piece, a second rotating piece, a push rod, a pressing piece, a first matching piece, a limiting piece and a second matching piece, the first rotating piece comprises a first end and a second end connected with the first end, and the second rotating piece is located between the first end and the second end. The push rod movably penetrates through the second rotating piece, the first matching piece is arranged at the end of the push rod and arranged in the second end in a sliding mode, and a positioning piece matched with the first matching piece is arranged on the end face, facing the second end, of the second rotating piece. The positioning piece selectively abuts against the first matching piece, the limiting piece is arranged on the inner wall of the first end portion, the pressing piece is arranged on the limiting piece in a sliding mode, and the second matching piece is arranged at the end, away from the first matching piece, of the push rod. The clamping device has the advantages of being labor-saving in clamping, convenient to adjust, safe to use and the like.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of kitchen utensils, and particularly relates to a clamping device. BACKGROUND

[0002] During cooking or dining, people often encounter the problem of inconvenient transfer caused by excessively high temperature of tableware. Therefore, tableware clamps are often used to transfer the tableware with excessively high temperature. The tableware clamps are sanitary and convenient, effectively protect hands from being hurt, and are deeply loved by consumers. At present, the tableware clamps on the market need the user to control the tableware clamp at all times, so as to ensure that the tableware is always in a clamped state to complete the transfer of the tableware. If the user does not keep controlling the tableware clamp at all times or controls the tableware clamp with insufficient force during the transfer, the tableware will fall and scald the user, which threatens the safety of the user. CONTENT OF THE UTILITY MODEL

[0003] The application aims to provide a clamping device which is labor-saving, convenient to adjust and safe to use in view of the above problems in the prior art.

[0004] Some embodiments of the application provide a clamping device, which comprises a first rotating member, a second rotating member, a push rod, a pressing member, a first matching member, a limiting member and a second matching member. The first rotating member comprises a first end portion and a second end portion connected with the first end portion. The second rotating member is located between the first end portion and the second end portion. The push rod is movably arranged through the second rotating member. The first matching member is arranged at an end of the push rod and is slidably arranged in the second end portion. An end face of the second rotating member towards the second end portion is provided with a positioning member matched with the first matching member. The positioning member selectively abuts against the first matching member. The limiting member is arranged on an inner wall of the first end portion. The pressing member is slidably arranged on the limiting member. The second matching member is arranged at an end of the push rod away from the first matching member and abuts against the limiting member or the pressing member. The second matching member adjusts the abutting relationship with the limiting member by means of the pressing member, so as to adjust the abutting relationship between the first matching member and the positioning member. When the pressing member abuts against the second matching member, the second matching member is in a non-abutting state with the limiting member, and the first matching member abuts against the positioning member, so that the first rotating member and the second rotating member are allowed to rotate in one direction. When the pressing member releases the abutting relationship with the second matching member, the second matching member abuts against the limiting member, and the first matching member releases the abutting relationship with the positioning member, so that the first rotating member and the second rotating member are allowed to rotate in two directions.

[0005] In some embodiments, the pressing member is provided with a first component at one end of the push rod, the second engaging member comprises a second component engaging with the first component, the second component is provided at one end of the push rod facing the pressing member, the limiting member comprises a plurality of limiting blocks arranged at intervals, each of the limiting blocks is provided with a third component engaging with the second component at one end of the push rod, the second component can alternately abut against the first component and the third component to make the second component rotate.

[0006] In some embodiments, the clamping device further comprises a plurality of first sliding grooves and a plurality of first limiting grooves, the first sliding grooves are arranged between two adjacent limiting blocks, the third component is concave at a surface thereof facing the second component to form the first limiting grooves, the length of the first limiting grooves is smaller than the length of the first sliding grooves, the second engaging member further comprises a plurality of protruding blocks arranged at intervals, the protruding blocks are protrudingly arranged at the side surface of the push rod and connected to the second component, a second limiting groove is formed between two adjacent protruding blocks, the second component can selectively abut against the first limiting grooves, or abut against the first component and slidably arranged in the first sliding grooves together with the protruding blocks, so that the limiting blocks are slidably arranged in the second limiting grooves.

[0007] In some embodiments, the first component is provided with a plurality of first engaging surfaces at a surface thereof facing the second component, the second component is provided with a plurality of second engaging surfaces at a surface thereof facing the pressing member, the second engaging surfaces engage with the first engaging surfaces, the third component is provided with a third engaging surface, a fourth engaging surface and a fifth engaging surface connected between the third engaging surface and the fourth engaging surface at a surface thereof facing the second component, the third engaging surface and the fifth engaging surface are connected to form the first limiting grooves, the fourth engaging surface is further connected with a first sliding groove, the first engaging surface, the second engaging surface, the third engaging surface and the fourth engaging surface are all arranged in the same direction relative to the push rod.

[0008] In some embodiments, the clamping device further comprises a plurality of first sliding grooves and a plurality of first limiting grooves, the first sliding grooves are arranged between two adjacent limiting blocks, the second component is concave at a surface thereof facing the pressing member to form the first limiting grooves, the second engaging member further comprises a plurality of protruding blocks arranged at intervals, the protruding blocks are protrudingly arranged at the side surface of the push rod and connected to the second component, a second limiting groove is formed between two adjacent protruding blocks, the third component movably abuts against the first limiting grooves, the second component movably abuts against the first component and slidably arranged in the first sliding grooves together with the protruding blocks, so that the limiting blocks are slidably arranged in the second limiting grooves.

[0009] In some embodiments, the first component forms a plurality of first matching surfaces towards the surface of the second component, the third component forms a second matching surface towards the surface of the second component, the second component forms a third matching surface, a fourth matching surface and a fifth matching surface connected between the third matching surface and the fourth matching surface towards the surface of the third component, the third matching surface and the fifth matching surface form the first limiting slot, the fourth matching surface further connects with a second limiting slot, and the first matching surface, the second matching surface, the third matching surface and the fourth matching surface are all arranged in the same direction relative to the push rod.

[0010] In some embodiments, the clamping device further comprises a clamping member arranged on the side of the pressing member and slidably arranged in the first sliding slot.

[0011] In some embodiments, the limiting member further comprises a second sliding slot matched with the clamping member, the second sliding slot is arranged on the limiting block, and the clamping member is slidably arranged in the first sliding slot and the second sliding slot.

[0012] In some embodiments, the end surface of the first matching member is provided with a gear, the gear is matched with the positioning member, so that the second rotating member is unidirectionally rotated relative to the first rotating member when the two abut.

[0013] In some embodiments, the clamping device further comprises an elastic member accommodated in the second end portion, the elastic member abuts between the second end portion and the first matching member.

[0014] In some embodiments, the clamping device comprises a first clamping member connected with the first rotating member and a second clamping member connected with the second rotating member.

[0015] In summary, the pressing member of the clamping device can be pressed by one key to realize the alternating switching of the abutting state or the non-abutting state between the first matching member and the positioning member, and the first matching member and the positioning member can be in the abutting state or the non-abutting state after the pressing member is pressed. Thus, the user can switch the one-way rotation state and the two-way rotation state between the first rotating member and the second rotating member by one key pressing of the pressing member according to actual needs, and the clamping device can be used again. In addition, the second rotating handle and the first rotating handle can only adjust the included angle therebetween in one direction, so that the included angle between the second rotating handle and the first rotating handle is fixed when the user uses the clamping device to clamp the tableware for transfer. Thus, the user can ensure that the tableware is always clamped without constantly controlling the clamping device, so that the clamping is more labor-saving, and the situation that the tableware falls due to insufficient clamping force can be avoided, and the safety of the clamping device is greatly improved. In addition, the second rotating handle and the first rotating handle can only adjust the included angle therebetween in one direction, so that the user can adjust the included angle between the first rotating member and the second rotating member according to the size of the clamped tableware during use of the clamping device, and the applicability of the clamping device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the clamping device.

[0017] Figure 2 is a structural schematic diagram of the clamping device.

[0018] Figure 3 is a structural schematic diagram of the clamping device.

[0019] Figure 4 is a structural schematic diagram of the first rotating member in the clamping device.

[0020] Figure 5 is a structural schematic diagram of the first rotating member in the clamping device.

[0021] Figure 6 is a structural schematic diagram of the clamping device.

[0022] Figure 7 is a structural schematic diagram of the second rotating member in the clamping device.

[0023] Figure 8 is a structural schematic diagram of the second rotating member in the clamping device.

[0024] Figure 9 is a structural schematic diagram of the clamping device.

[0025] Figure 10is a structural schematic diagram of the clamping device of the present application.

[0026] Figure 11 is a partial structural schematic diagram of the clamping device of the present application.

[0027] In the figure, 1, first rotating member; 101, first end portion; 102, second end portion; 103, first connecting plate; 104, through hole; 105, opening; 2, second rotating member; 201, connecting pipe; 202, second connecting plate; 203, through hole; 2011, first assembly; 2012, second assembly; 2013, first buckle; 2014, second buckle; 3, push rod; 4, pressing member; 401, first part; 5, first matching member; 6, limiting member; 61, limiting block; 601, third part; 602, second sliding groove; 7, second matching member; 701, second part; 702, protruding block; 703, second limiting groove; 8, positioning member; 9, first sliding groove; 10, first limiting groove; 11, first matching surface; 12, second matching surface; 13, third matching surface; 14, fourth matching surface; 15, fifth matching surface; 16, clamping member; 17, gear tooth; 18, elastic member; 19, fixing member; 20, first clamping member; 21, second clamping member. DETAILED DESCRIPTION

[0028] The following are specific embodiments of the present application and further describe the technical solutions of the present application in conjunction with the accompanying drawings, but the present application is not limited to these embodiments.

[0029] Embodiment One

[0030] Please refer to Figures 1-8The utility model provides a clamping device, including first rotating piece 1, second rotating piece 2, push rod 3, pressing piece 4, first cooperation piece 5, limiting piece 6 and second cooperation piece 7, first rotating piece 1 includes first end 101 and the second end 102 of connecting first end 101, second rotating piece 2 is located between first end 101 and second end 102, push rod 3 movably passes through second rotating piece 2 and is arranged, first cooperation piece 5 is arranged at the end of push rod 3 and is slidably arranged in second end 102, the end face of second rotating piece 2 towards second end 102 is provided with the positioning piece 8 that cooperates with first cooperation piece 5, positioning piece 8 selectively abuts first cooperation piece 5, limiting piece 6 is arranged on the inner wall of first end 101, pressing piece 4 is slidably arranged in limiting piece 6, second cooperation piece 7 is arranged at the end of push rod 3 away from first cooperation piece 5, and abuts with limiting piece 6 or pressing piece 4, second cooperation piece 7 adjusts the abutment relationship with limiting piece 6 by means of pressing piece 4, to adjust the abutment relationship of first cooperation piece 5 and positioning piece 8, wherein, when pressing piece 4 abuts second cooperation piece 7, second cooperation piece 7 and limiting piece 6 are in the non-abutment state, first cooperation piece 5 abuts positioning piece 8, to make first rotating piece 1 and second rotating piece 2 realize unidirectional rotation;When pressing piece 4 removes the abutment relationship of second cooperation piece 7, second cooperation piece 7 abuts limiting piece 6, and first cooperation piece 5 removes the abutment with positioning piece 8, to make first rotating piece 1 and second rotating piece 2 realize bidirectional rotation.

[0031] It can be understood that the clamping device in some embodiments of the present application can realize the alternative switching of the abutting state or the non-abutting state between the first cooperation piece 5 and the positioning piece 8 through one-key pressing of the pressing piece 4, and can keep the first cooperation piece 5 and the positioning piece 8 in the abutting state or the non-abutting state after pressing the pressing piece 4. Therefore, the user can switch the unidirectional rotation state and the bidirectional rotation state between the first rotating piece 1 and the second rotating piece 2 by one-key pressing of the pressing piece 4 with one hand according to actual needs, and also ensures the reuse of the clamping device. In addition, the second rotating piece 2 and the first rotating piece 1 can only adjust the included angle therebetween in one direction, so that the included angle between the second rotating piece 2 and the first rotating piece 1 is fixed when the user uses the clamping device to clamp and transfer tableware due to the cooperation between the first cooperation piece 5 and the positioning piece 8. Therefore, the user can ensure that the tableware is always clamped without constantly controlling the clamping device with force, so that the clamping is more labor-saving, and the situation that the tableware falls due to insufficient clamping force can be avoided, greatly improving the safety of the clamping device. In addition, the second rotating piece 2 and the first rotating piece 1 can only adjust the included angle therebetween in one direction, which can facilitate the user to adjust the included angle between the first rotating piece 1 and the second rotating piece 2 according to the size of the clamped tableware during use of the clamping device, and improve the applicability of the clamping device.

[0032] In some embodiments, as shown in Figure 2 、 Figure 3 The pressing member 4 is provided with a first part 401 at one end thereof facing the push rod 3, the second cooperation member 7 comprises a second part 701 cooperating with the first part 401, the second part 701 is arranged at one end of the push rod 3 facing the pressing member 4, the limiting member 6 comprises a plurality of limiting blocks 61 arranged at intervals, each limiting block 61 is provided with a third part 601 at one end thereof facing the push rod 3, the second part 701 can alternately abut against the first part 401 and the third part 601, so that the rotation of the second part 701 can switch the abutting state and the non-abutting state between the first cooperation member 5 and the positioning member 8. It can be understood that when the second part 701 abuts against the first part 401, the first cooperation member 5 abuts against the positioning member 8, at this time the first rotating member 1 can be unidirectionally rotated relative to the second rotating member 2; and when the second part 701 abuts against the third part 601, the first cooperation member 5 is released from the abutting relationship with the positioning member 8, at this time the first rotating member 1 can be bidirectionally rotated relative to the second rotating member 2, that is, the included angle between the first rotating member 1 and the second rotating member 2 can be freely adjusted.

[0033] In the embodiment, the number of the limiting blocks 61 is four, of course, in other embodiments, the number of the limiting blocks 61 is not limited to the above description, specifically, the number of the limiting blocks 61 can also be two, three, five or other numbers, which are not limited herein.

[0034] In some embodiments, the second cooperation member 7 and the push rod 3 are detachable structure. It can be understood that the user presses the pressing member 4, so that the second part 701 can alternately abut against the first part 401 or the third part 601, so that the second part 701 rotates, at this time the second cooperation member 7 rotates relative to the push rod 3.

[0035] In other embodiments, the second cooperation member 7 and the push rod 3 can be an integral structure. It can be understood that the user presses the pressing member 4, so that the second part 701 can alternately abut against the first part 401 or the third part 601, so that the second part 701 rotates, at this time the push rod 3 rotates together with the second cooperation member 7.

[0036] In some embodiments, as shown in Figures 2-6As shown, the clamping device further comprises a plurality of first sliding grooves 9 and a plurality of first limiting grooves 10, the first sliding grooves 9 are arranged between two adjacent limiting blocks 61, the surface of the third component 601 is concave to form the first limiting grooves 10, the length of the first limiting grooves 10 is less than the length of the first sliding grooves 9, the second matching part 7 further comprises a plurality of protruding blocks 702 arranged at intervals, the protruding blocks 702 are protrudingly arranged on the side surface of the push rod 3 and connected to the second component 701, the second limiting grooves 703 are formed between two adjacent protruding blocks 702, the second component 701 is selectively abutted to the first limiting grooves 10 or abutted to the first component 401 and slidably arranged in the first sliding grooves 9 together with the protruding blocks 702, so that the limiting blocks 61 are slidably arranged in the second limiting grooves 703. It can be understood that the first limiting grooves 10 are arranged to prevent slipping when the second component 701 is abutted thereto, so as to ensure the stability of the non-abutment state between the first matching part 5 and the positioning part 8; when the second component 701 is abutted thereto under the action of the first component 401 and slides to the first sliding grooves 9 together with the protruding blocks 702, the limiting blocks 61 also slide to the second limiting grooves 703, so as to not only ensure the accuracy of the running track when the second component 701 switches the abutment, but also ensure the stability when the second component 701 switches the abutment. In addition, the length of the first limiting grooves 10 is less than the length of the first sliding grooves 9, so as to ensure that the second component 701 can form an abutment relationship with the first component 401 when sliding from the first limiting grooves 10 to the first sliding grooves 9, thereby ensuring the abutment between the first matching part 5 and the positioning part 8. In the embodiment, the number of the first sliding grooves 9, the first limiting grooves 10, the protruding blocks 702 and the second limiting grooves 703 is four. Of course, in other embodiments, the number of the first sliding grooves 9, the first limiting grooves 10, the protruding blocks 702 and the second limiting grooves 703 is not limited to the above description, specifically, the number of the first sliding grooves 9, the first limiting grooves 10, the protruding blocks 702 and the second limiting grooves 703 can also be two, three, five or other numbers, which are not limited here.

[0037] In some embodiments, as Figures 2-6As shown, the first component 401 forms a plurality of first matching surfaces 11 towards the surface of the second component 701, the second component 701 forms a plurality of second matching surfaces 12 towards the surface of the pressing piece 4 which match the first matching surfaces 11, the third component 601 forms a plurality of third matching surfaces 13, fourth matching surfaces 14 and fifth matching surfaces 15 which match the second matching surfaces 12 towards the surface of the second component 701, the third matching surfaces 13 and the fifth matching surfaces 15 form a first limiting groove 10, the fourth matching surfaces 14 further match a first sliding groove 9, and the first matching surfaces 11, the second matching surfaces 12, the third matching surfaces 13 and the fourth matching surfaces 14 are all arranged in the same direction relative to the push rod 3. It can be understood that the clamping device of some embodiments of the present application is arranged by matching of the matching surfaces to form a running track for switching of the second component 701 to abut, thereby ensuring the cyclic use of the clamping device.

[0038] Specifically, in the initial state, the second matching surfaces 12 on the second component 701 abut the first matching surfaces 11 on the first component 401 and the second component 701 is arranged together with the protruding block 702 in the first sliding groove 9, the limiting block 61 is arranged in the second limiting groove 703, and the first matching piece 5 abuts the positioning piece 8 at this time, at which time the first rotating piece 1 can only rotate in one direction relative to the second rotating piece 2; when the user presses the pressing piece 4, the first component 401 on the pressing piece 4 moves together with the pressing piece 4 in the direction of the second end portion 102 to abut the second component 701, the second matching surfaces 12 on the second component 701 slide along the third matching surfaces 13 to finally abut the first limiting groove 10, and the first matching piece 5 arranged at the end of the push rod 3 away from the second component 701 moves away from the first end portion 101 to release the abutment with the positioning piece 8 at this time, at which time the first rotating piece 1 can rotate in both directions relative to the second rotating piece 2, i.e. at this time the first rotating piece 1 completes the switching from only one-way rotation to bidirectional rotation relative to the second rotating piece 2; when the user presses the pressing piece 4 again, the first component 401 on the pressing piece 4 moves together with the pressing piece 4 in the direction of the second end portion 102 to make the first matching surfaces 11 on the first component 401 abut the second matching surfaces 12 on the second component 701, and push the second component 701 in the direction of the second end portion 102 to make the second component 701 slide along the fourth matching surfaces 14 to the first sliding groove 9 after leaving the first limiting groove 10 to form abutment with the first matching surfaces 11, and the first matching piece 5 arranged at the end of the push rod 3 away from the second component 701 moves towards the first end portion 101 to form abutment with the positioning piece 8 at this time, at which time the first rotating piece 1 can only rotate in one direction relative to the second rotating piece 2, i.e. at this time the first rotating piece 1 completes the switching from bidirectional rotation to only one-way rotation relative to the second rotating piece 2.

[0039] It can be understood that in some embodiments, the number of the first engaging surfaces 11 can be two, three, four or other number, which is not limited here.

[0040] In some embodiments, as shown in Figures 2-6 The clamping device further comprises a clamping member 16 arranged on the side surface of the pressing member 4 and slidably arranged in the first sliding groove 9, so as to limit the rotation of the pressing member 4 relative to the limiting member 6 and cooperate with the limiting block 61 to drive the second engaging member 7 to rotate relative to the pressing member 4.

[0041] In this embodiment, the number of the clamping members 16 is eight. Of course, in other embodiments, the number of the clamping members 16 can also be one, two, nine, ten or other number, which is not limited here.

[0042] In some embodiments, as shown in Figures 2-6 The limiting member 6 further comprises a second sliding groove 602 cooperating with the clamping member 16, and the clamping member 16 is slidably arranged in the first sliding groove 9 and the second sliding groove 602, so as to further limit the rotation of the pressing member 4 relative to the limiting member 6.

[0043] Of course, in other embodiments, the clamping member 16 can be slidably arranged in the second sliding groove 602 only.

[0044] In some embodiments, as shown in Figures 1-6 The end surface of the first engaging member 5 is provided with a gear 17 cooperating with the positioning member 8 to make the second rotating member 2 rotate unidirectionally relative to the first rotating member 1 when the two abut. It can be understood that the gear 17 and the positioning member 8 are engaged when the two abut, which limits the gear 17 to rotate only unidirectionally relative to the positioning member 8, so that the second rotating member 2 can rotate towards the first rotating member 1 and be limited to rotate away from the first rotating member 1. Therefore, when the user uses the clamping device to clamp and transfer tableware, the angle between the second rotating member 2 and the first rotating member 1 is fixed due to the cooperation of the first engaging member 5 and the positioning member 8, so that the user can ensure that the tableware is always clamped without constantly controlling the clamping device, thereby making the clamping more labor-saving and avoiding the situation that the tableware falls due to insufficient clamping force, greatly improving the safety of the clamping device. In addition, limiting the second rotating member 2 and the first rotating member 1 to adjust the angle between them only unidirectionally can also facilitate the user to adjust the angle between the first rotating member 1 and the second rotating member 2 according to the size of the clamped tableware during use of the clamping device, thereby improving the applicability of the clamping device.

[0045] In some embodiments, as shown in Figures 2-6As shown, the clamping device further comprises a resilient member 18 received in the second end portion 102, which abuts between the second end portion 102 and the first engaging member 5. It can be understood that in the initial state, the second part 701 abuts against the first part 401 and is arranged in the first sliding groove 9 together with the protruding block 702, the limiting block 61 is arranged in the second limiting groove 703, and the first engaging member 5 abuts against the positioning member 8 at this time, at which time the resilient member 18 is not compressed, and the first rotating member 1 can only be unidirectionally rotated relative to the second rotating member 2; when the user presses the pressing member 4, the first part 401 on the pressing member 4 moves together with the pressing member 4 to the second end portion 102 direction to push the second part 701 abutting thereto to move to the second part 701, so that the second engaging surface 12 on the second part 701 slides along the third engaging surface 13 to finally abut against the first limiting groove 10, and the first engaging member 5 arranged at the end of the push rod 3 away from the second part 701 moves away from the first end portion 101 to press the resilient member 18 at this time, at which time the resilient member 18 obtains elastic potential energy due to being pressed, the first engaging member 5 is out of the abutting relationship with the positioning member 8, and the first rotating member 1 can be bidirectionally rotated relative to the second rotating member 2, that is, at this time, the first rotating member 1 is switched from unidirectional rotation to bidirectional rotation relative to the second rotating member 2; when the user presses the pressing member 4 again, the first part 401 on the pressing member moves together with the pressing member 4 to the second end portion 102 direction to make the first engaging surface 11 on the first part 401 abut against the second engaging surface 12 on the second part 701, and push the second part 701 to the second end portion 102 direction to make the second part 701 slide along the fourth engaging surface 14 to the first sliding groove 9 after being out of the first limiting groove 10 to form abutment with the first engaging surface 11, and the first engaging member 5 arranged at the end of the push rod 3 away from the second part 701 is out of the pressing of the resilient member 18 due to the movement of the second part 701, so that the resilient member 18 drives the first engaging member 5 to move towards the first end portion 101 by means of the elastic potential energy obtained previously to form abutment with the positioning member 8, at which time the first rotating member 1 can only be unidirectionally rotated relative to the second rotating member 2, that is, at this time, the first rotating member 1 is switched from bidirectional rotation to unidirectional rotation relative to the second rotating member 2.

[0046] It can be understood that in the embodiment, the resilient member 18 is a spring. Of course, in some other embodiments, the resilient member 18 can also be a gas bag or other structure that can be compressed under pressure and can drive the first engaging member 5 to reset when the pressure is removed, which is not limited here.

[0047] In some embodiments, as Figure 2As shown, the clamping device further comprises a fixing member 19 arranged on the inner wall of the second end portion 102 and / or the surface of the first cooperating member 5 facing away from the push rod 3, and the elastic member 18 is arranged in abutment between the second end portion 102 and the first cooperating member 5 in cooperation with the fixing member 19. It can be understood that the fixing member 19 is used to fix the position of the elastic member 18, preventing the elastic member 18 from being offset in position when pressed, thereby affecting the subsequent resetting of the first cooperating member 5.

[0048] Of course, in other embodiments, the fixing member 19 can be omitted, which is not limited herein.

[0049] In some embodiments, as shown in Figure 1 The clamping device comprises a first clamping member 20 connected to the first rotating member 1 and a second clamping member 21 connected to the second rotating member 2. In this way, the clamping device can adjust the relative position between the first clamping member 20 and the second clamping member 21 by adjusting the included angle between the first rotating member 1 and the second rotating member 2, so as to clamp the tableware.

[0050] In some embodiments, as shown in Figure 2 The first rotating member 1 further comprises a first connecting plate 103, and the first end portion 101 and the second end portion 102 are arranged at two ends of the first connecting plate 103, respectively. The first clamping member 20 is arranged on the side of the first connecting plate 103 facing away from the first end portion 101 and the second end portion 102. The first end portion 101 is provided with a through hole 104, and the pressing member 4 is arranged on the first end portion 101 and exposed to the outside through the through hole 104. The side of the second end portion 102 facing the first end portion 101 is provided with an opening 105, and the first cooperating member 5 is slidably arranged in the second end portion 102 through the opening 104.

[0051] In some embodiments, as shown in Figure 7 , Figure 8 The second rotating member 2 comprises a connecting pipe 201 and a second connecting plate 202 connected to the connecting pipe 201. The connecting pipe 201 is located between the first end portion 101 and the second end portion 102, and the connecting pipe 201 is provided with a positioning member 8 at the end facing the second end portion 102. The second clamping member 21 is arranged on the side of the second connecting plate 202 facing away from the connecting pipe 201. The connecting pipe 202 is provided with a through hole 203, and the push rod 3 penetrates the connecting pipe 201 through the through hole 203. It can be understood that the second connecting plate 202 adjusts the relative position with the first connecting plate 103 through the cooperation of the first cooperating member 5 and the positioning member 8.

[0052] In some embodiments, as shown in Figure 7 , Figure 8As shown, the connecting pipe 201 comprises a first assembly 2011, a second assembly 2012, a first buckle 2013 and a second buckle 2014, the first assembly 2011 is matched with the second assembly 2012 by means of the first buckle 2013 and the second buckle 2014, the first assembly 2011 and the second assembly 2012 are matched to form the connecting pipe 201 with the through hole 203 and are located between the first end 101 and the second end 102, the positioning member 8 is arranged at one end of the first assembly 2011 and the second assembly 2012 towards the second end 102. The first buckle 2013 is arranged on the first assembly 2011, and the second buckle 2014 is arranged on the second assembly 2012. It can be understood that the first assembly 2011 and the second assembly 2012 are disassembled by the first buckle 2013 and the second buckle 2014, which is convenient for assembly and subsequent maintenance.

[0053] In other embodiments, the positions of the first buckle 2013 and the second buckle 2014 are not limited to the above description, specifically, the second buckle 2014 is arranged on the first assembly 2011, and the first buckle 2013 is arranged on the second assembly 2012.

[0054] In other embodiments, the first buckle 2013 and the second buckle 2014 described above can be omitted, at this time, the first assembly 2011 and the second assembly 2012 are integrally formed.

[0055] Embodiment two

[0056] Please refer to Figure 1 , Figures 7-11The utility model provides a clamping device, including first rotating piece 1, second rotating piece 2, push rod 3, pressing piece 4, first cooperation piece 5, limiting piece 6 and second cooperation piece 7, first rotating piece 1 includes first end 101 and the second end 102 of connecting first end 101, second rotating piece 2 is located between first end 101 and second end 102, push rod 3 movably passes through second rotating piece 2 and is arranged, first cooperation piece 5 is arranged at the end of push rod 3 and is slidably arranged in second end 102, the end face of second rotating piece 2 towards second end 102 is provided with the positioning piece 8 that cooperates with first cooperation piece 5, positioning piece 8 selectively abuts first cooperation piece 5, limiting piece 6 is arranged on the inner wall of first end 101, pressing piece 4 is slidably arranged in limiting piece 6, second cooperation piece 7 is arranged at the end of push rod 3 away from first cooperation piece 5, and abuts with limiting piece 6 or pressing piece 4, second cooperation piece 7 adjusts the abutment relationship with limiting piece 6 by means of pressing piece 4, to adjust the abutment relationship of first cooperation piece 5 and positioning piece 8, wherein, when pressing piece 4 abuts second cooperation piece 7, second cooperation piece 7 and limiting piece 6 are in the non-abutment state, first cooperation piece 5 abuts positioning piece 8, to make first rotating piece 1 and second rotating piece 2 realize unidirectional rotation;When pressing piece 4 removes the abutment relationship of second cooperation piece 7, second cooperation piece 7 abuts limiting piece 6, and first cooperation piece 5 removes the abutment with positioning piece 8, to make first rotating piece 1 and second rotating piece 2 realize bidirectional rotation.

[0057] It can be understood that the clamping device in some embodiments of the present application can realize the alternative switching of the abutting state or the non-abutting state between the first cooperation piece 5 and the positioning piece 8 through one-key pressing of the pressing piece 4, and can keep the first cooperation piece 5 and the positioning piece 8 in the abutting state or the non-abutting state after pressing the pressing piece 4. Therefore, the user can switch the unidirectional rotation state and the bidirectional rotation state between the first rotating piece 1 and the second rotating piece 2 by one-key pressing of the pressing piece 4 with one hand according to actual needs, and also ensures the reuse of the clamping device. In addition, the second rotating piece 2 and the first rotating piece 1 can only adjust the included angle therebetween in one direction, so that the included angle between the second rotating piece 2 and the first rotating piece 1 is fixed when the user uses the clamping device to clamp and transfer tableware due to the cooperation between the first cooperation piece 5 and the positioning piece 8. Therefore, the user can ensure that the tableware is always clamped without constantly controlling the clamping device with force, so that the clamping is more labor-saving, and the situation that the tableware falls due to insufficient clamping force can be avoided, greatly improving the safety of the clamping device. In addition, the second rotating piece 2 and the first rotating piece 1 can only adjust the included angle therebetween in one direction, which can facilitate the user to adjust the included angle between the first rotating piece 1 and the second rotating piece 2 according to the size of the clamped tableware during use of the clamping device, and improve the applicability of the clamping device.

[0058] In some embodiments, as shown in Figure 9 、 Figure 10 the pressing piece 4 is provided with a first component 401 at one end thereof facing the push rod 3, the second cooperating piece 7 comprises a second component 701 cooperating with the first component 401, the second component 701 is arranged at one end of the push rod 3 facing the pressing piece 4, the limiting piece 6 comprises a plurality of limiting blocks 61 arranged at intervals, each limiting block 61 is provided with a third component 601 at one end thereof facing the push rod 3, the second component 701 can alternately abut against the first component 401 and the third component 601, so that the rotation of the second component 701 can switch the abutting relationship between the first cooperating piece 5 and the positioning piece 8. It can be understood that when the second component 701 abuts against the first component 401, the first cooperating piece 5 abuts against the positioning piece 8, at this time the first rotating piece 1 can be unidirectionally rotated relative to the second rotating piece 2; and when the second component 701 abuts against the third component 601, the first cooperating piece 5 is released from the abutting relationship with the positioning piece 8, at this time the first rotating piece 1 can be bidirectionally rotated relative to the second rotating piece 2, that is, the included angle between the first rotating piece 1 and the second rotating piece 2 can be freely adjusted.

[0059] In the present embodiment, the number of the limiting blocks 61 is two. Of course, in other embodiments, the number of the limiting blocks 61 is not limited to the above description, specifically, the number of the limiting blocks 61 can also be three, four, five or other numbers, which are not limited herein.

[0060] In some embodiments, the second cooperating piece 7 and the push rod 3 are detachable structure. It can be understood that the user presses the pressing piece 4, so that the second component 701 can alternately abut against the first component 401 or the third component 601, so that the second component 701 rotates, at this time the second cooperating piece 7 rotates relative to the push rod 3.

[0061] In other embodiments, the second cooperating piece 7 and the push rod 3 can be integrally formed structure. It can be understood that the user presses the pressing piece 4, so that the second component 701 can alternately abut against the first component 401 or the third component 601, so as to promote the rotation of the second component 701, at this time the push rod 3 rotates together with the second cooperating piece 7.

[0062] In some embodiments, as shown in Figure 9 、 Figure 10As shown, the clamping device further comprises a plurality of first sliding grooves 9 and a plurality of first limiting grooves 10, the first sliding grooves 9 are arranged between two adjacent limiting blocks 61, the surface of the second component 701 is recessed to form the first limiting grooves 10, the second component 701 further comprises a plurality of protruding blocks 702 arranged at intervals, the protruding blocks 702 are protrudingly arranged on the side surface of the push rod 3 and connected with the second component 701, the second limiting grooves 703 are formed between two adjacent protruding blocks 702, the length of the first limiting groove 10 is less than the length of the second limiting groove 703. The third component 601 is movably abutted on the first limiting groove 10, the second component 701 is movably abutted on the first component 401 and slidably arranged in the first sliding groove 9 together with the protruding block 702, so that the limiting block 61 is slidably arranged in the second limiting groove 703. It can be understood that the first limiting groove 10 is arranged to prevent slipping when the third component 601 is abutted thereon, so as to ensure the stability of the non-abutment state between the first component 5 and the positioning component 8; when the second component 701 is abutted on the first component 401 and slides to the first sliding groove 9 together with the protruding block 702, the limiting block 61 also slides to the second limiting groove 703, so as to not only ensure the accuracy of the running track when the third component 601 switches to abutment, but also ensure the stability of the third component 601 when switching to abutment. In addition, the length of the first limiting groove 10 is less than the length of the second limiting groove 703, so as to ensure that the second component 701 can be in abutment with the first component 401 when the third component 601 slides from the first limiting groove 10 to the second limiting groove 703, thereby ensuring the abutment between the first component 5 and the positioning component 8.

[0063] The third component 601 can be abutted on the first limiting groove 10 or slidably connected to the second limiting groove 703, compared with the third component 601 slidably connected to the second limiting groove 703, the second component 701 is closer to the second end 102, that is, when the third component 603 is abutted on the first limiting groove 10, the first component 5 is released from the abutment relationship with the positioning component 8; when the third component 603 is slidably connected to the second limiting groove 703, the first component 5 is abutted on the positioning component 8, so that the abutment relationship and the non-abutment relationship between the first component 5 and the positioning component 8 are switched by switching the position of the third component 603.

[0064] In the embodiment, the number of the first sliding grooves 9, the first limiting grooves 10, the protruding blocks 702 and the second limiting grooves 703 is two. Of course, in other embodiments, the number of the first sliding grooves 9, the first limiting grooves 10, the protruding blocks 702 and the second limiting grooves 703 is not limited to the above description, specifically, the number of the first sliding grooves 9, the first limiting grooves 10, the protruding blocks 702 and the second limiting grooves 703 can also be three, four, five or other numbers, which are not limited herein.

[0065] In some embodiments, asFigure 9 、 Figure 10 As shown in FIG. 1, the first component 401 forms a plurality of first matching surfaces 11 towards the surface of the second component 701, the third component 601 forms a second matching surface 12 towards the surface of the second component 701, the second component 701 forms a third matching surface 13, a fourth matching surface 14 and a fifth matching surface 15 connected between the third matching surface 13 and the fourth matching surface 14 towards the surface of the third component 601, the third matching surface 13 is connected with the fifth matching surface 15 to form a first limiting groove 10, the fourth matching surface 14 is also connected with a second limiting groove 703, and the first matching surface 11, the second matching surface 12, the third matching surface 13 and the fourth matching surface 14 are all arranged in the same direction relative to the push rod 3. It can be understood that the clamping device of some embodiments of the present application is arranged by the cooperation of the matching surfaces to form a running track for the third component 601 to switch abutting, which ensures the cyclic use of the clamping device.

[0066] Specifically, in the initial state, the third matching surface 13 on the second component 701 abuts against the first matching surface 11 on the first component 401, and the second component 701 is arranged together with the protruding block 702 in the first sliding groove 9, the limiting block 61 is arranged in the second limiting groove 703, and meanwhile the first matching piece 5 abuts against the positioning piece 8, at this time the first rotating piece 1 can only rotate in one direction relative to the second rotating piece 2; when the user presses the pressing piece 4, the first component 401 on the pressing piece 4 moves together with the pressing piece 4 in the direction of the second end portion 102 to the second component 701 abutting against it, to the second component 701, the third matching surface 13 on the second component 701 slides along the second matching surface 12, so that the third component 601 finally abuts against the first limiting groove 10, and meanwhile the first matching piece 5 arranged on the end of the push rod 3 away from the second component 701 moves away from the first end portion 101 due to the movement of the second component 701, so as to be disengaged from the abutment with the positioning piece 8, at this time the first rotating piece 1 can rotate in both directions relative to the second rotating piece 2, that is, at this time the first rotating piece 1 completes the switching from only one-way rotation to bidirectional rotation relative to the second rotating piece 2; when the user presses the pressing piece 4 again, the first component 401 on the pressing piece 4 moves together with the pressing piece 4 in the direction of the second end portion 102 to make the first matching surface 11 on the first component 401 abut against the third matching surface 13 on the second component 701, and push the second component 701 in the direction of the second end portion 102, so that the third component 601 slides along the fourth matching surface 14 to the second limiting groove 703 after being disengaged from the first limiting groove 10, so that the second component 701 and the protruding block 702 slide to the first sliding groove 9 and the first matching surface 11 abuts against the third matching surface 13, and meanwhile the first matching piece 5 arranged on the end of the push rod 3 away from the second component 701 moves towards the first end portion 101 due to the movement of the second component 701, so as to abut against the positioning piece 8, at this time the first rotating piece 1 can only rotate in one direction relative to the second rotating piece 2, that is, at this time the first rotating piece 1 completes the switching from bidirectional rotation to only one-way rotation relative to the second rotating piece 2.

[0067] It can be understood that in some embodiments, the number of the first matching surface 11 can be two, three, four or other numbers, which are not limited here.

[0068] In some embodiments, as Figure 7 , Figure 8As shown, the end surface of the first fitting piece 5 is provided with a gear tooth 17, which cooperates with the positioning piece 8 to enable the second rotating piece 2 to rotate in one direction relative to the first rotating piece 1 when the two are in abutment. It can be understood that the gear tooth 17 and the positioning piece 8 are in meshing engagement when the two are in abutment, which limits the gear tooth 17 to rotate in only one direction relative to the positioning piece 8, thereby enabling the second rotating piece 2 to rotate towards the first rotating piece 1 and limiting the second rotating piece 2 from rotating away from the first rotating piece 1. Therefore, when the user uses the clamping device to clamp and transfer tableware, the angle between the second rotating piece 2 and the first rotating piece 1 is fixed due to the cooperation between the first fitting piece 5 and the positioning piece 8, so that the user does not need to constantly control the clamping device with force to ensure that the tableware is always clamped, thereby making the clamping more labor-saving, and also avoiding the situation that the tableware falls due to insufficient clamping force, greatly improving the safety of the clamping device in use. In addition, limiting the second rotating piece 2 and the first rotating piece 1 to adjust the angle between them in only one direction also enables the user to adjust the angle between the first rotating piece 1 and the second rotating piece 2 according to the size of the tableware to be clamped during use of the clamping device, thereby improving the applicability of the clamping device.

[0069] In some embodiments, as Figure 11As shown, the clamping device further comprises a resilient member 18 accommodated in the second end portion 102, which abuts between the second end portion 102 and the first engaging member 5. It can be understood that, in the initial state, the second component 701 abuts against the first component 401 and is arranged together with the protruding block 702 in the first sliding groove 9, the limiting block 61 is arranged in the second limiting groove 703, and meanwhile the first engaging member 5 abuts against the positioning member 8, at this time the resilient member 18 is not compressed, and the first rotating member 1 can only rotate in one direction relative to the second rotating member 2; when the user presses the pressing member 4, the first component 401 on the pressing member 4 moves together with the pressing member 4 to the second end portion 102 direction to push the second component 701 abutting thereto to move to the second component 701, so that the third component 601 finally abuts against the first limiting groove 10, and meanwhile the first engaging member 5 arranged at the end of the push rod 3 away from the second component 701 moves away from the first end portion 101 due to the movement of the second component 701 to press the resilient member 18, at this time the resilient member 18 obtains elastic potential energy due to being pressed, the first engaging member 5 is out of the abutting relationship with the positioning member 8, and the first rotating member 1 can rotate bidirectionally relative to the second rotating member 2, that is, at this time the first rotating member 1 completes the switching from unidirectional rotation to bidirectional rotation relative to the second rotating member 2; when the user presses the pressing member 4 again, the first component 401 on the pressing member 4 moves together with the pressing member 4 to the second end portion 102 direction to make the first engaging surface 11 on the first component 401 abut against the third engaging surface 13 on the second component 701, and push the second component 701 to the second end portion 102 direction to make the third component 601 slide to the second limiting groove 703 after being out of the first limiting groove 10 along the fourth engaging surface 14, so that the second component 701 and the protruding block 702 slide to the first sliding groove 9 and the first engaging surface 11 abuts against the third engaging surface 13, and meanwhile the first engaging member 5 arranged at the end of the push rod 3 away from the second component 701 is out of the pressing of the resilient member 18 due to the movement of the second component 701, so that the resilient member 18 pushes the first engaging member 5 to move towards the first end portion 101 by means of the elastic potential energy obtained previously to form abutment with the positioning member 8, at this time the first rotating member 1 can only rotate in one direction relative to the second rotating member 2, that is, at this time the first rotating member 1 completes the switching from bidirectional rotation to unidirectional rotation relative to the second rotating member 2.

[0070] It can be understood that, in the embodiment, the resilient member 18 is a spring. Of course, in some other embodiments, the resilient member 18 can also be a gas bag or other structure that can be compressed under pressure and can drive the first engaging member 5 to reset when the pressure is released, which is not limited here.

[0071] In some embodiments, as Figure 11As shown, the clamping device further comprises a fixing member 19 arranged on the inner wall of the second end portion 102 and / or the surface of the first cooperating member 5 facing away from the push rod 3, and the elastic member 18 is arranged in abutment between the second end portion 102 and the first cooperating member 5 in cooperation with the fixing member 19. It can be understood that the fixing member 19 is used to fix the position of the elastic member 18, preventing the elastic member 18 from being offset in position when pressed, thereby affecting the subsequent resetting of the first cooperating member 5.

[0072] Of course, in other embodiments, the fixing member 19 can be omitted, which is not limited herein.

[0073] In some embodiments, as shown in Figure 1 The clamping device comprises a first clamping member 20 connected to the first rotating member 1 and a second clamping member 21 connected to the second rotating member 2. In this way, the clamping device can adjust the relative position between the first clamping member 20 and the second clamping member 21 by adjusting the included angle between the first rotating member 1 and the second rotating member 2, so as to achieve clamping of the tableware.

[0074] In some embodiments, as shown in Figure 1 , Figures 7-8 , Figure 11 The first rotating member 1 further comprises a first connecting plate 103, and the first end portion 101 and the second end portion 102 are arranged at two ends of the first connecting plate 103. The first clamping member 20 is arranged on the side of the first connecting plate 103 facing away from the first end portion 101 and the second end portion 102. The first end portion 101 is provided with a through hole 104, the pressing member 4 is arranged on the first end portion 101 and exposed to the outside through the through hole 104, and the side of the second end portion 102 facing the first end portion 101 is provided with an opening 105, and the first cooperating member 5 is slidably arranged in the second end portion 102 through the opening 104.

[0075] In some embodiments, as shown in Figure 1 , Figures 7-8 The second rotating member 2 comprises a connecting pipe 201 and a second connecting plate 202 connected to the connecting pipe 201, and the connecting pipe 201 is located between the first end portion 101 and the second end portion 102. The connecting pipe 201 is provided with a positioning member 8 at one end facing the second end portion 102, and the second clamping member 21 is arranged on the side of the second connecting plate 202 facing away from the connecting pipe 201. The connecting pipe 201 is provided with a through hole 203, and the push rod 3 penetrates the connecting pipe 201 through the through hole 203. It can be understood that the second connecting plate 202 adjusts the relative position with the first connecting plate 103 through the cooperation of the first cooperating member 5 and the positioning member 8.

[0076] In some embodiments, as shown in Figure 1 , Figures 7-8As shown, the connecting pipe 201 comprises a first assembly 2011, a second assembly 2012, a first buckle 2013 and a second buckle 2014, the first assembly 2011 cooperates with the second assembly 2012 through the first buckle 2013 and the second buckle 2014, the first assembly 2011 and the second assembly 2012 cooperatively form the connecting pipe 201 with the through hole 203, and are located between the first end 101 and the second end 102, and the positioning member 8 is arranged at one end of the first assembly 2011 and the second assembly 2012 towards the second end 102. The first buckle 2013 is arranged on the first assembly 2011, and the second buckle 2014 is arranged on the second assembly 2012. It can be understood that the first assembly 2011 and the second assembly 2012 are disassembled through the first buckle 2013 and the second buckle 2014, which facilitates assembly and subsequent maintenance.

[0077] In other embodiments, the positions of the first buckle 2013 and the second buckle 2014 are not limited to the above description, specifically, the second buckle 2014 is arranged on the first assembly 2011, and the first buckle 2013 is arranged on the second assembly 2012.

[0078] In other embodiments, the first buckle 2013 and the second buckle 2014 described above can be omitted, at this time, the first assembly 2011 and the second assembly 2012 are integrally formed.

[0079] The specific embodiments described herein merely exemplify the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0080] Although a large number of terms are used herein, the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the present application; any additional limitation is contrary to the spirit of the present application.

Claims

1. A clamping device, characterized in that The clamping device comprises a first rotating member, a second rotating member, a push rod, a pressing member, a first matching member, a limiting member and a second matching member, the first rotating member comprises a first end and a second end connected with the first end, the second rotating member is located between the first end and the second end, the push rod is movably arranged through the second rotating member, the first matching member is arranged at the end of the push rod and is slidably arranged in the second end, the end face of the second rotating member towards the second end is provided with a positioning member matched with the first matching member, the positioning member selectively abuts against the first matching member, the limiting member is arranged on the inner wall of the first end, the pressing member is slidably arranged on the limiting member, the second matching member is arranged at the end of the push rod away from the first matching member and abuts against the limiting member or the pressing member, the second matching member adjusts the abutting relationship with the limiting member by means of the pressing member, so as to adjust the abutting relationship between the first matching member and the positioning member, wherein, when the pressing member abuts against the second matching member, the second matching member and the limiting member are in a non-abutting state, the first matching member abuts against the positioning member, so that the first rotating member and the second rotating member are realized in one-way rotation; when the pressing member releases the abutting relationship with the second matching member, the second matching member abuts against the limiting member, and the first matching member releases the abutting relationship with the positioning member, so that the first rotating member and the second rotating member are realized in two-way rotation.

2. The clamping device of claim 1, wherein The end of the pressing member towards the push rod is provided with a first part, the second matching member comprises a second part matched with the first part, the second part is arranged at the end of the push rod towards the pressing member, the limiting member comprises a plurality of limiting blocks arranged at intervals, and the end of each limiting block towards the push rod is provided with a third part matched with the second part, the second part can alternately abut against the first part and the third part, so that the second part rotates.

3. The clamping device of claim 2, wherein The clamping device further comprises a plurality of first sliding grooves and a plurality of first limiting grooves, the first sliding groove is arranged between two adjacent limiting blocks, the surface of the third part towards the second part is concave to form the first limiting groove, the length of the first limiting groove is less than the length of the first sliding groove, the second matching member further comprises a plurality of protruding blocks arranged at intervals, the protruding blocks are protrudingly arranged on the side surface of the push rod and connected with the second part, a second limiting groove is formed between two adjacent protruding blocks, the second part selectively abuts against the first limiting groove, or abuts against the first part and is slidably arranged in the first sliding groove together with the protruding blocks, so that the limiting block is slidably arranged in the second limiting groove.

4. The clamping device of claim 3, wherein The surface of the first component facing the second component is formed with a plurality of first matching surfaces, the surface of the second component facing the pressing piece is formed with second matching surfaces matching the first matching surfaces, the surface of the third component facing the second component is formed with a third matching surface, a fourth matching surface and a fifth matching surface connected between the third matching surface and the fourth matching surface, the third matching surface and the fifth matching surface are connected to form the first limiting groove, the fourth matching surface is further connected with a first sliding groove matched therewith, and the first matching surface, the second matching surface, the third matching surface and the fourth matching surface are all arranged in the same direction relative to the push rod.

5. The clamping device of claim 2, wherein The clamping device further comprises a plurality of first sliding grooves and a plurality of first limiting grooves, the first sliding groove is arranged between two adjacent limiting blocks, the surface of the second component facing the pressing piece is recessed to form the first limiting groove, the second matching component further comprises a plurality of spaced protruding blocks, the protruding blocks are protrudingly arranged on the side surface of the push rod and connected with the second component, a second limiting groove is formed between two adjacent protruding blocks, the third component movably abuts against the first limiting groove, and the second component movably abuts against the first component and is slidably arranged in the first sliding groove together with the protruding blocks, so that the limiting block is slidably arranged in the second limiting groove.

6. The clamping device of claim 5, wherein The surface of the first component facing the second component is formed with a plurality of first matching surfaces, the surface of the third component facing the second component is formed with a second matching surface, the surface of the second component facing the third component is formed with a third matching surface, a fourth matching surface and a fifth matching surface connected between the third matching surface and the fourth matching surface, the third matching surface and the fifth matching surface are connected to form the first limiting groove, the fourth matching surface is further connected with a second limiting groove matched therewith, and the first matching surface, the second matching surface, the third matching surface and the fourth matching surface are all arranged in the same direction relative to the push rod.

7. The clamping device according to claim 3 or 4, characterized in that The clamping device further comprises a clamping piece, the clamping piece is arranged on the side surface of the pressing piece and is slidably arranged in the first sliding groove.

8. The clamping device of claim 7, wherein The limiting piece further comprises a second sliding groove matched with the clamping piece, the second sliding groove is arranged on the limiting block, and the clamping piece is slidably arranged in the first sliding groove and the second sliding groove.

9. The clamping device according to any one of claims 1-6 and 8, characterized in that The end surface of the first matching component is provided with a gear, the gear is matched with the positioning piece, so that the second rotating piece is unidirectionally rotated relative to the first rotating piece when the two abut against each other.

10. The clamping device according to any one of claims 1-6 and 8, characterized in that The clamping device further comprises an elastic piece accommodated in the second end portion, the elastic piece abuts between the second end portion and the first matching component.

11. The clamping device according to any one of claims 1-6 and 8, characterized in that The clamping device comprises a first clamping piece and a second clamping piece, the first clamping piece is connected with the first rotating piece, and the second clamping piece is connected with the second rotating piece.

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