Locking device and tool locking seat applying same

Abstract

The invention relates to tool locking seat equipment, in particular to a locking device and a tool locking seat applying the same. The locking device comprises a base and a locking assembly, a first sliding groove and a second sliding groove are formed in the base, a clamping piece is arranged in the first sliding groove, an operating piece is arranged in the second sliding groove, and the clamping piece and the operating piece are hinged through a connecting rod. The locking assembly comprises a retainer, a first elastic piece and a second elastic piece, the operating piece can move between a locking position and a releasing position, when the operating piece is located at the locking position, the two clamping pieces clamp a cutter handle to be fixed, and the retainer partially extends out of the operating piece to be matched with the base to prevent the operating piece from moving reversely; the two clamping pieces are forced to move oppositely through the second elastic piece, and the gap between the clamping pieces and the cutter handle is eliminated. By means of the structural arrangement of the retainer and the second elastic piece, rigid limiting and elastic clamping are combined, the problem that when an existing tool locking base is fixed in an embedded mode, a tool handle is prone to being affected by gaps or impact to move is solved, and the tool locking device is reliable in locking and easy to operate.

Description

Technical Field

[0001] The present invention relates to a knife locking seat device, and in particular to a locking device and a knife locking seat using the device. Background Art

[0002] The tool lock seat is a device used to assist in replacing tools. After the tool handle is placed on the tool lock seat, it prevents the tool handle from rotating during the disassembly and assembly process, so as to separate the tool handle from the tool, and then install the new tool on the tool handle to complete the tool replacement operation.

[0003] The knife lock seat structure mainly includes a base and a hole. The hole is used to assemble the knife handle. A circumferential limiting structure is generally provided in the base or the hole to prevent the knife handle from rotating when the tool is replaced. At present, the circumferential limiting structure usually includes pins, grooves and blocks or their combination.

[0004] Among them, taking the Chinese utility model patents with application numbers CN201620294876.6 and CN201920021927.1 as examples, a locking knife seat with a block-shaped circumferential limiting structure is usually provided with a positioning block on the base, and the positioning block can cooperate with the keyway on the knife handle to realize the positioning of the knife handle in the insertion hole and prevent the knife handle from rotating.

[0005] According to the different installation methods of the tool handle, there are roughly two subdivisions of the block-shaped circumferential limiting structure. For the locking tool holder installed with the conical surface of the tool handle downward, the positioning block is usually fixed or embedded on the base; and for the locking tool holder installed with the conical surface of the tool handle upward, the positioning block is usually designed to be flipped on the inside and outside of the hole. The positioning block is flipped to the outside before the tool handle is inserted. When the tool handle is placed in the hole, the positioning block is flipped from the outside to the inside to achieve cooperation with the keyway on the tool handle.

[0006] For example, the block-shaped circumferential limiting structure of the above-mentioned knife lock seat mostly limits the rotation of the knife handle by rigid interlocking. However, during long-term use, when the positioning block is worn or there is an assembly error between the positioning block and the knife rod, it cannot be well attached to the knife handle. Such rigid interlocking structure is susceptible to gaps or impacts during the tool replacement process, causing the tool handle to move, making it difficult to adjust adaptively, further causing accelerated wear and affecting tool replacement. Therefore, there is an urgent need for a locking device that can achieve reliable locking and is easy to operate. Summary of the invention

[0007] In order to solve the deficiencies in the prior art, the present invention provides a locking device and a knife locking seat using the device. Through a reasonable design of the locking device, the defects of the existing knife locking seat that the knife handle cannot be well attached to the knife handle and is easily affected by gaps or impacts, resulting in movement of the knife handle, are compensated.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions: a locking device, comprising a base and a slide groove arranged on the base, the slide groove comprising a first slide groove and a second slide groove; two clamping members, slidably arranged in the first slide groove, an operating member, slidably arranged in the second slide groove, and hinged to each clamping member through a connecting rod; a locking assembly, comprising a stopper and a first elastic member, the stopper is attached to the operating member, and the first elastic member abuts between the stopper and the operating member; The operating member can move between a locking position and a releasing position. When the operating member is in the locking position, the two clamping members clamp the member to be fixed, and the stop member partially extends out of the operating member and cooperates with the base where the slide groove is located to prevent the operating member from moving in the opposite direction. The locking assembly also includes a second elastic member, which eliminates the gap between the clamping member and the member to be fixed by forcing the two clamping members to move toward each other.

[0009] As a preferred embodiment, when the operating member is in the release position, the end of the stop member abuts or slides with the second slide groove; when the operating member is in the locking position, the stop member partially extends under the action of the first elastic member and abuts against the outer wall of the base to form a rigid limit.

[0010] As a preferred embodiment, the locking assembly also includes an adjusting member, which is attached to the operating member. The adjusting member and the stop member are connected via a transmission member, and the adjusting member drives the stop member to move via the transmission member to release the lock on the fixed member.

[0011] As a preferred embodiment, the clamping member is divided into a guiding portion and a positioning portion in the length direction; the guiding portion is away from the member to be fixed, and the side wall is in sliding contact with the first slide groove for guiding and limiting lateral displacement; the side wall of the positioning portion is in clearance fit with the first slide groove, and the cross-sectional shape of the positioning portion in the length direction is in fit with the keyway on the member to be fixed.

[0012] As a preferred embodiment, two inwardly turned and oppositely arranged limiting parts are formed at the opening of the first slide groove and / or the second slide groove, and a limiting step cooperating with the limiting parts is formed on the clamping member to limit and fix the fixed member in the vertical direction.

[0013] As a preferred embodiment, the locking assembly further comprises a fixing block located at the outer edge of the base; the second elastic member is arranged in the first slide groove, and its two ends respectively abut against the clamping member and the fixing block to force the two clamping members to move toward each other.

[0014] As a preferred embodiment, the locking assembly also includes a rod and an L-piece, the L-piece includes a vertical arm and a horizontal arm, the rod passes through the vertical arm and is connected to the stop piece, the L-piece is slidably fitted on the rod, and the second elastic piece is sleeved on the rod and abuts between the end of the rod and the L-piece to eliminate the gap between the horizontal arm of the L-piece and the outer wall of the base.

[0015] As a preferred embodiment, when the operating member is in the release position, the bottom end of the horizontal arm abuts or slides with the second sliding groove, and the end of the horizontal arm abuts with the cavity wall of the operating member accommodating the stop member; when the operating member is in the locking position, the end of the horizontal arm abuts with the outer wall of the base.

[0016] As a preferred embodiment, a threaded section is provided on the rod, a nut is threadedly connected to the end of the rod, a second elastic member is sleeved on the rod and abuts between the nut and the vertical arm, and the preload force of the second elastic member is adjusted by the axial displacement of the nut; or, the rod has a bolt head, the rod and the stop member are threadedly connected, the second elastic member abuts between the bolt head and the L member, and the preload force of the second elastic member is adjusted by the axial displacement of the bolt head.

[0017] The present application also provides a knife locking seat, comprising the above-mentioned locking device, a base and a hole formed on the surface of the base, the hole is used to accommodate the knife handle, and the first sliding groove and the second sliding groove are arranged around the hole.

[0018] First, the locking device provided by the present invention realizes double locking of the knife handle by arranging a stopper and a second elastic member; when the operating member is in the locking position, the clamping member clamps the knife handle, the stopper cooperates with the base to form a rigid limit, and the clamping force applied by the second elastic member further enhances the locking effect, effectively solving the problem that the knife handle is easily affected by clearance or impact and moves due to the rigid interlocking fixing method of the existing knife lock seat, thereby improving the stability of tool replacement.

[0019] Secondly, in the locking device of the present invention, the operating member is linked to the double clamping members through a connecting rod to move synchronously, and a single slide can complete the limiting of the stop member and the clamping adjustment of the elastic member. For example, when the operating member moves from the release position to the locking position, the clamping member closes, the stop member extends, and the elastic member retracts and contracts simultaneously, which is convenient for quickly completing the replacement of the tool handle and improving the efficiency of tool disassembly and assembly.

[0020] Third, in one embodiment of the present invention, the locking assembly includes an L-piece and a rod. When there is a gap between the clamping member and the knife handle, the moving distance of the operating member increases, so that a gap is generated between the stop member and the outer wall of the base after the stop member is extended. The present application arranges the L-piece and the rod so that the L-piece can automatically compensate for the gap through the elastic deformation of the second elastic member, thereby exerting the double locking effect of the locking assembly.

[0021] Fourth, in one embodiment of the present invention, the rod is provided with a thread, and the pre-compression amount of the second elastic member can be adjusted by twisting the nut or the bolt head, thereby adjusting the pre-tightening force on the L member and the clamping force on the handle. For the second elastic member whose elasticity is reduced or partially fails due to long-term use, the pre-tightening force on the L member can be restored by adjusting the pre-compression amount, thereby ensuring the stability of the device during long-term use.

[0022] Fifth, the present invention divides the clamping member that cooperates with the slide groove into a guiding part and a positioning part. The guiding part is in close contact with the side wall of the slide groove to ensure the linear guidance and torsional rigidity of the clamping member and effectively resist the rotational force of the tool handle; the positioning part is in clearance cooperation with the side wall of the slide groove to avoid direct contact with the slide groove, and the wear is mainly concentrated on the guiding part, thereby realizing the decoupling of the positioning and guiding / wear areas, reducing the wear of the positioning part, and ensuring the cooperation accuracy with the tool handle during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic structural diagram of one embodiment of the locking device and the locking knife seat of the present invention; Figure 2 It is a schematic diagram of the matching state between the locking device of the present invention and the knife handle; Figure 3 A schematic diagram of the structure of the knife handle provided by the present invention; Figure 4 A schematic diagram of the internal structure of the operating element provided by the present invention; Figure 5 A cross-sectional view of one embodiment of the operating member provided by the present invention; Figure 6 A schematic diagram of one of the matching states of the stopper and the base provided by the present invention; Figure 7 The operating member and the stopper provided by the present invention and the corresponding chute cross-section diagram, wherein (a) is a cross-section diagram of the operating member and the first chute, and (b) is a cross-section diagram of the stopper and the second chute; Figure 8 A schematic diagram of the structure of the clamping member and the first sliding groove provided by the present invention; Fig. 9 A schematic diagram of one of the matching states of the stopper and the base provided by the present invention; Fig.10 A cross-sectional view of another embodiment of the operating member provided by the present invention; Fig.11 A schematic diagram of one of the matching states of the L-piece and the base provided by the present invention; Markings in the figure: 10-clamping member, 11-guide portion, 12-positioning portion, 20-operating member, 30-connecting rod, 40-base, 41-first slide groove, 411-first section, 412-second section, 413-limiting portion, 414-limiting step, 4141-step part one, 4142-step part two, 42-second slide groove, 50-tool handle, 51-keyway, 60-locking assembly, 61-stop member, 62-first elastic member, 63-second elastic member, 64-transmission member, 641-rotating wheel, 65-rod, 66-L member, 661-vertical arm, 662-horizontal arm, 67-adjusting member, 671-bump, 68-nut, 70-fixed block, 80-hole, D-gap. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two parts. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Example 1, see Figure 1 to Figure 8 , Figure 1A locking device of the present application is shown, the locking device includes two clamping members 10, an operating member 20 and a base 40, a first slide groove 41 and a second slide groove 42 are formed on the base 40, the projections of the first slide groove 41 and the second slide groove 42 on the horizontal plane are orthogonal, the clamping member 10 is slidably arranged in the first slide groove 41, the first slide groove 41 includes a first section 411 and a second section 412 spaced apart, and there is a clamping member 10 in the first section 411 and the second section 412 respectively, the two clamping members 10 are used to clamp the to-be-fixed member between the first section 411 and the second section 412, the to-be-fixed member can be any form of the handle 50, in this embodiment, with Figure 2~Figure 3 Taking the HSK tool handle shown as an example, the clamping member 10 is designed to form a block structure that matches with the keyway 51 of the tool handle 50 .

[0030] See also Figure 1 and Figure 2 The operating member 20 is slidably disposed in the second slide groove 42. By sliding the operating member 20, the clamping member 10 is controlled to clamp and unlock the knife handle 50. In this embodiment, a connecting rod 30 is disposed on the top surface of the operating member 20 and the clamping member 10. The two ends of the connecting rod 30 are respectively hinged to the clamping member 10 and the operating member 20 through a pin shaft, thereby constructing a stable linkage structure. When the operating member 20 slides in the second slide groove 42, for example, from a release position close to the knife handle 50 to a locking position (such as a locking position) far away from the knife handle 50, Figure 1 and 2 When the operating member 20 moves from the locking position away from the knife handle 50 to the releasing position close to the knife handle 50, the two clamping members 10 will release the knife handle 50 under the drive of the operating member 20.

[0031] In this embodiment, the operating member 20 is exemplified by a block structure. In some embodiments of the present application, a portion or end of the operating member 20 may also be designed as a handle that is easy to hold, so as to facilitate direct manual operation by an operator, or may be designed as a joint that is easy to connect to an external drive device, such as a threaded rod, a flange joint, etc., to achieve automated drive control through an external drive.

[0032] See also Figure 4The locking assembly 60 includes a stopper 61 and a first elastic member 62. A cavity for accommodating the stopper 61 and the first elastic member 62 is provided in the operating member 20, the stopper 61 is slidably matched with the operating member 20, and the first elastic member 62 is abutted between the stopper 61 and the inner wall of the operating member 20. In the present embodiment, the first elastic member 62 is a compression spring, and in some embodiments of the present application, the first elastic member 62 may also be an elastic rubber sleeve. When the operating member 20 is in the release position, the stopper 61 is retracted in the operating member 20, the first elastic member 62 is in a retracted state, and in order to improve the smoothness of the movement of the operating member 20, the lower end of the stopper 61 is smoothly provided, and the stopper 61 is slidably matched with the bottom of the second slide groove 42 in the second slide groove 42.

[0033] See also Figure 4 and Figure 6 When the operating member 20 is in the locking position, the stopper 61 partially extends out of the operating member 20 under the drive of the first elastic member 62, and the portion of the stopper 61 extending out of the operating member 20 is limited by cooperating with the base 40. In this embodiment, the stopper 61 is limited by abutting against the outer wall of the base 40 in the locking position. When the clamping member 10 opens toward the outer edge of the base 40 under the action of an external force, the operating member 20 moves toward the release position close to the handle 50 under the action of the connecting rod 30, and the stopper 61 abutting against the outer wall of the base 40 limits the movement of the operating member 20, thereby realizing the rigid limitation of the clamping member 10 to lock the handle 50. In some embodiments of the present application, the stopper 61 can also extend from the side wall of the operating member 20, and the inner wall of the second slide groove 42 is provided with a recess that cooperates with the end of the stopper 61, and the end of the stopper 61 is embedded in the recess to achieve the locking between the stopper 61 and the base 40.

[0034] See also Figure 1~Figure 4 The locking assembly 60 also includes a second elastic member 63 and a fixing block 70 located at the outer edge of the base 40. In the present embodiment, the second elastic member 63 is a compression spring. In some embodiments of the present application, the second elastic member 63 may also be an elastic rubber sleeve; the second elastic member 63 includes an elastic member A and an elastic member B, which are respectively arranged in the first section 411 and the second section 412, and the two ends of the elastic member A and the elastic member B are respectively abutted against the corresponding clamping member 10 and the fixing block 70. When the handle 50 needs to be replaced, the operating member 20 moves from the locking position to the releasing position, and the two clamping members 10 squeeze the elastic member A and the elastic member B respectively, so that the elastic member A and the elastic member B are in a contracted state, which is convenient for installing the handle 50 to be fixed.

[0035] When the operating member 20 moves from the release position to the locking position, the two clamping members 10 gradually close toward each other. When the operating member 20 is in the locking position, the stopper 61 extends under the action of the first elastic member 62, and abuts rigidly against the outer wall of the base 40, realizing mechanical self-locking, and preventing the clamping member 10 from moving in the opposite direction (opening); at the same time, the elastic member A and the elastic member B apply a continuous clamping force to the handle 50, and the clamping force is fine-tuned with the size of the handle 50, eliminating the gap between the clamping member 10 and the handle 50 caused by the difference of the handle 50 or the wear of the parts.

[0036] The present embodiment adjusts the way in which the clamping member 10 locks the knife handle 50. Through the coordinated operation of the operating member 20 and the locking assembly 60, the clamping member 10 fits tightly with the knife handle 50 in the form of sliding displacement. At the same time, with the dual effects of the stop member 61 limiting and the second elastic member 63 continuously clamping, a dual locking of rigidity and elasticity is formed. Compared with the traditional single locking mode, such as interlocking fixation, elastic clamping or mechanical limiting, the double locking greatly improves the reliability of locking. In terms of operation, the locking device of the present embodiment links the double clamping members 10 to act synchronously through the operating member 20. Only a single movement of the operating member 20 is required to complete the adjustment of the stop member 61 limiting and the elastic member clamping, thereby achieving the locking or unlocking of the knife handle 50. The operation is simple and efficient. It is worth noting that the present embodiment can automatically adjust the clamping force according to the wear or installation error of the shank 50, thereby solving the problem that the shank 50 is easily affected by gaps or impacts and causes movement in the traditional knife lock seat using a static interlocking method. The locking device of the present application achieves a good balance in terms of operational convenience, compatibility and long-term stability.

[0037] See also Figure 4~Figure 6 The locking assembly 60 further includes an adjusting member 67, which is generally block-shaped and slidably disposed on the operating member 20. The adjusting member 67 is connected to the stop member 61 via a transmission member 64. Under the action of the transmission member 64, pressing the adjusting member 67 downward can drive the stop member 61 to retract into the operating member 20, so as to release the locking of the stop member 61 on the knife handle 50. The transmission member 64 can be implemented by the following embodiments, see Figure 5~Figure 6, the two ends of the transmission member 64 are respectively in contact with the bottom end of the adjusting member 67 and the groove on the stopper 61, and the transmission member 64 is rotatably connected to the operating member 20 through a pin shaft to realize a lever transmission, and the force pressing the adjusting member 67 downward is converted into a force driving the stopper 61 upward. Specifically, when the operator presses the adjusting member 67 downward, the transmission member 64 rotates with the pin shaft as a fulcrum, thereby driving the stopper 61 to retract into the operating member 20 to overcome the elastic force of the first elastic member 62. Similarly, due to the transmission cooperation mode between the adjusting member 67 and the stopper 61, when the stopper 61 extends downward under the action of the first elastic member 62, the adjusting member 67 will automatically move upward. In order to prevent the adjusting member 67 from jumping out, the side wall of the adjusting member 67 is provided with a protrusion 671 for limiting, and the protrusion 671 cooperates with the cavity of the operating member 20 for accommodating the adjusting member 67 to limit. In addition, in this embodiment, both ends of the transmission member 64 are connected to the rotating wheel 641 through a pin shaft, and the adjusting member 67 and the stopper 61 are both in contact with the rotating wheel 641, so as to switch the sliding friction between the transmission member 64 and the operating member 20 and the stopper 61 to rolling friction, so that the operation is smoother in the process of pressing the adjusting member 67 to drive the stopper 61 to move. It should be noted that the personnel in the technical field of the present invention can also adopt other transmission structures to realize the conversion of the movement of the adjusting member 67 into the reverse movement of the stopper 61 to replace the transmission member 64, for example, in some embodiments of the present application, the transmission member 64 can also adopt a gear rack transmission structure, a rack is provided on the adjusting member 67, and a gear meshing with the rack is provided on the stopper 61, when the adjusting member 67 moves up and down, the meshing of the gear rack drives the stopper 61 to do reverse movement, or adopt a worm gear transmission structure to convert the linear motion of the adjusting member 67 into the rotation of the worm gear to drive the stopper 61 to extend and retract.

[0038] See also Figure 7 and Figure 8 At the openings of the first slide groove 41 and the second slide groove 42, two inwardly turned limiting portions 413 are formed opposite to each other, and a limiting step 414 cooperating with the limiting portion 413 is formed on the clamping member 10. The limiting step 414 includes a vertical step portion 4141 and a horizontally arranged step portion 4142. The side wall of the limiting portion 413 is slidably engaged with the step portion 4141, and the bottom surface of the limiting portion 413 is slidably engaged with the step portion 4142. On the one hand, the operating member 20 and the clamping member 10 are both slidably arranged in the slide groove, and the limiting portion 413 can limit the clamping member 10 and the operating member 20 in the vertical direction, play a guiding role, and assist in completing the clamping operation; on the other hand, by setting the limiting portion 413 and the second step portion 4142, it is coordinated with the sliding clamping method of the clamping member 10 to further limit the locked knife handle 50 vertically, preventing the knife handle 50 from jumping out due to external force during assembly, and preventing the knife handle 50 from falling off and causing damage to the knife handle 50 body or the tool on it.

[0039] See also Figure 7 In (a) and (b), in this embodiment, including the limiting portion 413 and the limiting step 414, the parts where the edges of the operating member 20, the clamping member 10 and the corresponding slide groove match each other are chamfered or rounded to switch the edge contact to a smoother surface or line contact, thereby reducing interference, so that the clamping member 10 and the operating member 20 slide more smoothly in the slide groove and reduce the jamming phenomenon. At the same time, the chamfered part of the clamping member 10 near the bottom of the slide groove matches the inner fillet arc of the keyway 51 of the handle 50, which is used to ensure the fit between the clamping member 10 and the handle 50 when in contact, and improve the stability of the clamping member 10 clamping the handle 50; if the part where the clamping member 10 contacts the handle 50 cannot be well matched with the keyway 51 of the handle 50, the clamping stability of the clamping member 10 to the handle 50 is poor.

[0040] See also Figure 8 In the length direction of the clamping member 10, the clamping member 10 is configured to include a guide portion 11 away from the handle 50 and a positioning portion 12 matched with the key slot 51 on the handle 50, the side wall of the guide portion 11 is in sliding contact with the side wall of the first slide slot 41, and the side wall of the positioning portion 12 is in clearance match with the side wall of the first slide slot 41. Since the clamping member 10 is slidably arranged in the first slide slot 41, in order to ensure the guiding effect and anti-torsion performance, the shape of the clamping member 10 is forced to be limited by the inner wall of the slide slot, and cannot be well matched with the shape of the key slot 51 of the handle 50, affecting the stability of clamping and locking. The clamping member 10 is divided into a guide portion 11 and a positioning portion 12. The side wall of the positioning portion 12 is in clearance with the side wall of the first slide groove 41, so that the positioning portion 12 that cooperates with the key groove 51 of the tool handle 50 is free from the constraint of the slide groove, ensuring its precise fit with the key groove 51; the guide portion 11 is in close sliding contact with the side wall of the slide groove, assuming the guiding function of the clamping member 10, ensuring the linearity of the moving path, and providing torsional rigidity to resist the circumferential force of the tool handle 50 (such as tool rotation torque) to prevent the clamping member 10 from deflecting. In addition, since the positioning portion 12 does not contact the side wall of the first slide groove 41, during the operation of the clamping member 10, the wear generated between the positioning portion 12 and the slide groove is only concentrated on the guide portion 11, realizing the decoupling of the positioning function from the guiding / wear area (the part in contact with the first slide groove 41), reducing the wear of the positioning portion 12 due to the cooperation with the slide groove, and ensuring the cooperation accuracy of the clamping member 10 with the tool handle 50 when it is used for a long time.

[0041] Example 2, see Fig.10 and Fig.11, except for the arrangement of the second elastic member 63, the other structures are basically the same as those of the first embodiment. In this embodiment, the locking assembly 60 further includes a rod 65 and an L member 66 located at the end of the stop member 61, the L member 66 includes a vertical arm 661 and a horizontal arm 662, the rod 65 passes through the vertical arm 661 and is connected to the stop member 61, the L member 66 is slidably fitted on the rod 65, and the second elastic member 63 is sleeved on the rod 65 and abuts between the end of the rod 65 and the vertical arm 661 of the L member 66.

[0042] See also Fig.10 When the operating member 20 is in the release position, the bottom end of the horizontal arm 662 slides against the second slide groove 42, and the end of the horizontal arm 662 abuts against the cavity wall of the operating member 20 that accommodates the stopper 61. Fig.11 When the operating member 20 slides to the locking position, it extends out under the action of the first elastic member 62, and the end of the horizontal arm 662 abuts against the outer wall of the base 40, preventing the clamping member 10 from moving in the opposite direction (opening). At the same time, the second elastic member 63 continues to apply a rightward force to the L member 66. Under the action of the second elastic member 63, the L member 66 automatically adapts to the gap between the L member 66 and the outer wall of the base 40, maintains a fit state with the outer wall of the base 40, and eliminates the gap between the clamping member 10 and the knife handle 50 caused by assembly differences or wear of the knife handle 50. When there is a gap between one end of the clamping member 10 and the knife handle 50 when they are fitted, in order to make the clamping member 10 fit with the knife handle 50 and play its locking role, the operating member 20 is compared to the normal assembly state, see Fig. 9 , the sliding distance in the second slide groove 42 increases (in the diagram, the sliding direction is to the left), resulting in a gap D between the stopper 61 and the outer wall of the base 40 after it is extended. If this gap D exists, a non-contact area will be formed between the stopper 61 and the L-piece 66 and the outer wall of the base 40, and the stopper 61 cannot provide a good locking state for the handle 50. In the solution of Example 1 of the present application, a solution for the second elastic member 63 is provided, which directly applies a continuous clamping force to the clamping member 10 by cooperating with the fixing block 70. Although this method can eliminate the gap between the clamping member 10 and the handle 50 and exert the elastic locking function, the gap D between the stopper 61 and the outer wall of the base 40 still exists, and it is difficult to exert the rigid limiting effect of the stopper 61. In this embodiment, through the arrangement of the L-piece 66 and the rod 65, the L-piece 66 can automatically compensate for the gap D through the elastic deformation of the second elastic member 63, and in the case where the gap D exists, the double locking effect can still be exerted.

[0043] In order to prevent the L-piece 66 from rotating around the rod 65 when locking, a keyway structure (not shown in the figure) is provided between the vertical arm 661 and the rod 65. A groove is machined along the axial direction on the surface of the rod 65, and the groove is arranged along the axial direction of the rod 65 and has a certain length. At the same time, a key corresponding to the inner hole where the vertical arm 661 of the L-piece 66 cooperates with the rod 65 is provided. When the L-piece 66 is installed on the rod 65, the key is embedded in the groove. Through the cooperation between the key and the groove, the rotation of the L-piece 66 around the rod 65 is limited, and the sliding of the L-piece in the axial direction is not affected, ensuring that the L-piece 66 can function stably during the locking process.

[0044] See also Fig.10 and Fig.11 , the rod 65 is fixed on the stopper 61 in a threaded connection manner, the end of the rod 65 cooperates with the nut 68 that is threadedly connected, the second elastic member 63 abuts between the nut 68 and the L member 66, and the nut 68 is turned to move the nut 68 toward one end close to the L member 66. Since the L member 66 always abuts against the cavity wall of the operating member 20 that accommodates the stopper 61 in the release position, and always abuts against the outer wall of the base 40 in the locking position, the pre-compression amount of the second elastic member 63 can be adjusted by turning the nut 68, and the pre-tightening force on the L member 66 can be adjusted. In this way, by controlling the pre-compression amount of the second elastic member 63, the abutment force between the L member 66 and the outer wall of the base 40 and the clamping force of the clamping member 10 on the handle 50 can be controlled in the locking position. On the other hand, for the second elastic member 63 that has reduced elasticity or partially failed due to long-term use, the operator can restore the pre-tightening force of the second elastic member 63 on the L member 66 by adjusting the pre-compression amount of the second elastic member 63. In addition, in some embodiments of the present application, the rod 65 can also be designed to have a bolt head, and the rod 65 is connected to the stop member 61 by a threaded connection. A limiting hole that cooperates with the end of the rod 65 is set in the stop member 61, and the second elastic member 63 abuts between the bolt head and the L member 66. When the bolt head is turned, the bolt head and the rod 65 are axially displaced as a whole to adjust the preload force of the second elastic member 63.

[0045] Example 3, see Figure 3, this embodiment also provides a knife lock seat, which includes the locking device described in the above embodiment, and a hole 80 for installing a knife handle is formed on the base of the knife lock seat, and the first slide groove and the second slide groove are arranged around the hole 80. Exemplarily, taking the hole 80 for limiting the HSK knife handle as an example, the hole 80 is a stepped hole structure that matches the end of the knife handle. This stepped design can be adapted to the end of the HSK knife handle. In other embodiments of the present application, the hole 80 can also be designed according to the specifications and characteristics of different types of knife handles. For example, for some knife handles with special interfaces, the hole 80 can be designed into a special-shaped structure that matches it to meet diverse usage requirements. The specific structure of the locking device refers to the above embodiments. Since the knife lock seat of this embodiment adopts all the technical solutions of the above embodiments 1 and 2, the knife lock seat of this embodiment has all the technical effects brought by the technical solutions of the above embodiments, so the beneficial effects of the knife lock seat of this embodiment will not be repeated.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A locking device, comprising a base and a slide groove arranged on the base, characterized in that: The chute includes a first chute and a second chute. The locking device includes: Two clamping members are slidably arranged in the first slide groove, The operating member is slidably disposed in the second slide slot and is hinged to each clamping member through a connecting rod. The locking assembly comprises a stopper and a first elastic member, wherein the stopper is attached to the operating member, and the first elastic member abuts between the stopper and the operating member; The operating member can move between a locking position and a releasing position. When the operating member is in the locking position, the two clamping members clamp the member to be fixed, and the stopper partially extends out of the operating member and cooperates with the base where the slide groove is located to prevent the operating member from moving in the reverse direction; The locking assembly also includes a second elastic member, which eliminates the gap between the clamping members and the member to be fixed by forcing the two clamping members to move toward each other.

2. The locking device according to claim 1, characterized in that: When the operating member is in the release position, the end of the stop member abuts or slides with the second slide groove; when the operating member is in the locking position, the stop member partially extends under the action of the first elastic member and abuts against the outer wall of the base to form a rigid limit.

3. The locking device according to claim 1, characterized in that: The locking assembly also includes an adjusting member, which is attached to the operating member. The adjusting member is connected to the stop member through a transmission member. The adjusting member drives the stop member to move through the transmission member to release the lock on the fixed member.

4. The locking device according to claim 1, characterized in that: The clamping part is divided into a guiding part and a positioning part in the length direction; the guiding part is away from the part to be fixed, and the side wall is in sliding contact with the first slide groove, which is used to guide and limit lateral deviation; the side wall of the positioning part is in clearance fit with the first slide groove, and the cross-sectional shape of the positioning part in the length direction is in fit with the keyway on the part to be fixed.

5. The locking device according to claim 1, characterized in that: Two inwardly turned limiting parts are formed at the opening of the first slide groove and / or the second slide groove, and a limiting step cooperating with the limiting parts is formed on the clamping member to limit and fix the fixed member in the vertical direction.

6. The locking device according to any one of claims 1 to 5, characterized in that: The locking assembly also includes a fixing block located at the outer edge of the base; the second elastic member is arranged in the first sliding groove, and its two ends are respectively abutted against the clamping member and the fixing block to force the two clamping members to move toward each other.

7. The locking device according to any one of claims 2 to 5, characterized in that: The locking assembly also includes a rod and an L-piece, the L-piece includes a vertical arm and a horizontal arm, the rod passes through the vertical arm and is connected to the stop piece, and the L-piece is slidably fitted on the rod; the second elastic piece is sleeved on the rod and abuts between the end of the rod and the L-piece to eliminate the gap between the horizontal arm of the L-piece and the outer wall of the base.

8. The locking device according to claim 7, characterized in that: When the operating member is in the release position, the bottom end of the horizontal arm abuts or slides with the second slide groove, and the end of the horizontal arm abuts with the cavity wall of the operating member accommodating the stop member; when the operating member is in the locking position, the end of the horizontal arm abuts with the outer wall of the base.

9. The locking device according to claim 7, characterized in that: A threaded section is provided on the rod, a nut is threadedly connected to the end of the rod, a second elastic member is sleeved on the rod and abuts between the nut and the vertical arm, and the preload force of the second elastic member is adjusted by the axial displacement of the nut; Alternatively, the rod has a bolt head, the rod and the stopper are connected by threads, the second elastic member abuts between the bolt head and the L member, and the preload force of the second elastic member is adjusted by the axial displacement of the bolt head.

10. A knife lock seat, characterized in that: It comprises the locking device according to any one of claims 1 to 9, a base and a hole formed on the surface of the base, wherein the hole is used to accommodate the tool handle, and the first slide groove and the second slide groove are arranged around the hole.

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