Linkage handle

Abstract

The utility model relates to a linkage handle which comprises a linkage lock body, a linkage rod piece and a fixing bolt, the linkage lock body comprises an installation base, a control transmission piece and a hook tongue, the hook tongue and the control transmission piece are both rotatably installed on the installation base, one end of the control transmission piece is a transmission end, and the other end of the control transmission piece is a control end. The transmission end of the control transmission part is in transmission connection with the coupler knuckle, and the control transmission part can rotate to drive the coupler knuckle to lock or unlock, so that the linkage lock body can be switched between a locking state and an unlocking state; a sleeving hole is formed in the control end of the control transmission piece, and a fixing screw hole communicating with the outer surface of the control transmission piece is formed in the inner wall of the sleeving hole. The linkage rod piece is arranged in a sleeving hole of the linkage lock body in a penetrating mode. One end of the fixing bolt penetrates through the fixing screw hole of the linkage lock body and then is fixedly connected with the linkage rod piece.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to a linkage handle. Background Art

[0002] The linkage handle is a commonly used lock, which is widely used in scenes such as steam cabinets and ovens. Existing linkage handles, such as the Chinese utility model patent with publication number CN217812836U and patent name "Linkage Handle", have a clamping part formed on the control handle of the patent. The clamping gap of the clamping part is tightened by bolts, so that the circular hole of the clamping part is deformed and narrowed, so as to achieve clamping and fixing of the linkage round tube inserted in the round hole. This installation method of clamping and fixing by deformation requires the clamping part to have a certain deformation ability, so the structural strength of the clamping part is not high, and the clamping part is easily deformed repeatedly due to the force during the movement driven by the linkage round tube, which makes the clamping part prone to material fatigue and breakage, and has a short service life. Utility Model Content

[0003] The utility model aims to provide a linkage handle which has the advantages of simple structure, reasonable design, high structural strength, long service life and the like.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a linkage handle, including a linkage lock body, a linkage rod and a fixing bolt, the linkage lock body includes a mounting seat, a control transmission member and a hook tongue, the hook tongue and the control transmission member can be rotatably mounted on the mounting seat, one end of the control transmission member is the transmission end, the other end of the control transmission member is the control end, the transmission end of the control transmission member is connected with the hook tongue, the control transmission member can drive the hook tongue to lock or unlock by rotation, so that the linkage lock body can switch between the locked state and the unlocked state; a fitting hole is formed on the control end of the control transmission member, and a fixing screw hole connected with the outer surface of the control transmission member is formed on the inner wall of the fitting hole; the linkage rod is inserted into the fitting hole of the linkage lock body; one end of the fixing bolt is connected and fixed to the linkage rod after passing through the fixing screw hole of the linkage lock body.

[0005] The working principle of this utility model:

[0006] By adopting an installation method of connecting and fixing the fixing bolts with the linkage rod, the control end of the control transmission member does not need to have deformability, thereby improving the structural strength of the control transmission member. The control transmission member is not easily damaged by material fatigue and has a long service life.

[0007] Further, in a linkage handle as described above, the control transmission member includes a main body, a transmission connection part and a control connection part; the main body is a long strip structure, one end of the main body is connected to form the transmission connection part, and the other end of the main body is connected to form the control connection part, the transmission connection part and the control connection part are respectively located on opposite sides of the main body, and the end of the main body close to the transmission connection part is rotatably connected to the mounting seat; the transmission connection part is the transmission end of the control transmission member, and the transmission connection part is transmission-connected to the hook tongue; the control connection part is the control end of the control transmission member, and the fitting hole is formed on the control connection part.

[0008] Furthermore, in a linkage handle as described above, a mounting surface is formed on the control connection part, the mounting surface is located on the side of the fitting hole facing away from the main body, and the mounting surface is perpendicular to the central axis of the main body; the fixing screw hole is connected to the mounting surface, the hole axis of the fixing screw hole is perpendicular to the mounting surface, and the hole axis of the fixing screw hole intersects with the hole axis of the fitting hole.

[0009] Furthermore, in a linkage handle as described above, a accommodating cavity is formed in the mounting seat, and the accommodating cavity is formed with a control opening and a hook tongue opening; the transmission end of the control transmission member extends from the control opening into the accommodating cavity and is rotatably connected to the mounting seat; the hook tongue is in the accommodating cavity, and the hook tongue can extend out of the accommodating cavity from the hook tongue opening by rotation.

[0010] Furthermore, in a linkage handle as described above, a mounting hole connected to the accommodating cavity is formed on the mounting seat; a locking portion is formed on the operating transmission member; the linkage lock body also includes a locking assembly, the locking assembly includes a manipulation member and a toggle member, one end of the manipulation member passes through the mounting hole from the outside of the mounting seat and is connected and fixed to the toggle member; when in the locked state: the manipulation member can drive the toggle member by rotating, so that the locking portion of the manipulation transmission member is clamped between the toggle member and the inner wall of the accommodating cavity for fixation.

[0011] Furthermore, in a linkage handle as described above, a clamping groove is formed on one side of the toggle member, the cross-sectional profile of the clamping groove is a polygonal structure, and a connecting hole connected to the other side of the toggle member is formed on the bottom of the clamping groove; the control member is sequentially formed with a knob portion, a shaft portion and a clamping portion along its axis, the knob portion is located on the outside of the mounting seat, the shaft portion is inserted into the mounting hole of the mounting seat, a mounting screw hole is formed on the end face of the clamping portion, and the clamping portion is embedded and positioned in the clamping groove of the toggle member; the locking assembly also includes a connecting bolt, one end of which passes through the connecting hole of the toggle member and is locked into the mounting screw hole of the control member.

[0012] Furthermore, in a linkage handle as described above, an anti-error recess is formed on the inner wall of the clamping groove of the toggle member, and the anti-error recess is arranged along the central axis direction of the clamping groove; an anti-error convex strip is formed on the circumferential surface of the clamping part, and the anti-error convex strip is arranged along the axial direction of the clamping part, and the anti-error convex strip of the clamping part is embedded in the anti-error recess of the clamping groove.

[0013] Furthermore, in the aforementioned linkage handle, a limit slide is formed on the mounting seat, and a limit protrusion is formed on the knob portion, and the limit protrusion can be slidably embedded in the limit slide.

[0014] Furthermore, in the linkage handle as described above, a connecting screw hole is formed on the linkage rod, and one end of the fixing bolt passes through the fixing screw hole and is locked into the connecting screw hole.

[0015] Furthermore, in a linkage handle as described above, the hook tongue is an L-shaped structure, and one end of the hook tongue is rotatably mounted on a mounting seat; it also includes a transmission connecting member and an elastic member, and the two ends of the transmission connecting member are rotatably connected to the middle position of the hook tongue and the transmission end of the control transmission member respectively; the elastic member is compressed and arranged between the mounting seat and the transmission connecting member, so that the linkage lock body can self-lock and maintain the current state in the absence of external force.

[0016] The technical solution of the utility model has the following beneficial effects: it has the advantages of simple structure, reasonable design, high structural strength, long service life, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of Example 1;

[0018] Figure 2 It is the front view of Example 1;

[0019] Figure 3 for Figure 2 Cross-sectional view in the AA direction;

[0020] Figure 4 for Figure 3 A local enlarged view of point A;

[0021] Figure 5 It is a three-dimensional structural diagram of the control transmission member of Example 1;

[0022] Figure 6 is a three-dimensional structural diagram of the control member of Example 1;

[0023] Figure 7 is a top view of the toggle member of Example 1;

[0024] Figure 8 is a three-dimensional structural diagram of the mounting base of Example 1;

[0025] Fig. 9 This is a three-dimensional structural diagram of the linkage rod of Example 2.

[0026] Description of reference numerals:

[0027] 1-linked lock body; 11-mounting seat; 111-accommodating cavity; 112-control opening; 113-hook tongue opening; 114-mounting hole; 115-limiting slideway; 12-control transmission member; 121-main body; 122-transmission connection part; 123-control connection part; 1231-set hole; 1232-fixing screw hole; 1233-mounting surface; 124-locking part; 13-hook tongue; 14-transmission connection member ; 15-elastic member; 16-locking assembly; 161-operating member; 1611-knob part; 1612-rotating shaft part; 1613-clamping part; 1614-installing screw hole; 1615-anti-mistake convex strip; 1616-limiting convex block; 162-sliding member; 1621-clamping groove; 1622-connecting hole; 1623-anti-mistake concave position; 163-connecting bolt; 2-linking rod; 21-connecting screw hole. DETAILED DESCRIPTION

[0028] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0029] Example 1

[0030] like Figures 1 to 8The invention is a linkage handle of embodiment 1, comprising two linkage lock bodies 1, a linkage rod 2 and four fixing bolts (the fixing bolts are not shown in the drawings); each linkage lock body 1 comprises a mounting seat 11, a control transmission member 12, a hook tongue 13, a transmission connecting member 14 and an elastic member 15; the hook tongue 13 is an L-shaped structure, and one end of the hook tongue 13 is rotatably mounted on the mounting seat 11; the control transmission member 12 is rotatably mounted on the mounting seat 11, one end of the control transmission member 12 is a transmission end, and the other end of the control transmission member 12 is a control end; the two ends of the transmission connecting member 14 are rotatably connected to the middle position of the hook tongue 13 and the transmission end of the control transmission member 12 respectively; the control transmission member 12 can drive the hook tongue 13 to operate by rotating The locking or unlocking action enables the linkage lock body 1 to switch between the locked state and the unlocked state; the elastic member 15 is compressed and arranged between the mounting seat 11 and the transmission connecting member 14, so that the linkage lock body 1 can be self-locked and maintain the state in the absence of external force; a fitting hole 1231 is formed on the control end of the control transmission member 12, and two fixing screw holes 1232 connected to the outer surface of the control transmission member 12 are formed on the inner wall of the fitting hole 1231; the two ends of the linkage rod 2 are respectively inserted into the fitting holes 1231 of the two linkage lock bodies 1; a fixing bolt corresponds to a fixing screw hole 1232, and one end of the fixing bolt passes through the fixing screw hole 1232 of the corresponding linkage lock body 1 and is pressed on the linkage rod 2 for fixing.

[0031] The working principle of this embodiment:

[0032] By adopting the installation method of connecting and fixing the linkage rod 2 with the fixing bolt, the control end of the control transmission member 12 does not need to have the ability to deform, thereby improving the structural strength of the control transmission member 12. The control transmission member 12 is not easily damaged by material fatigue and has a long service life.

[0033] like Figure 1 , Figure 3 and Figure 5 As shown, the control transmission member 12 includes a main body 121, a transmission connection part 122 and a control connection part 123; the main body 121 is a long strip structure, one end of the main body 121 is connected to form the transmission connection part 122, and the other end of the main body 121 is connected to form the control connection part 123, the transmission connection part 122 and the control connection part 123 are respectively located on opposite sides of the main body 121, and the end of the main body 121 close to the transmission connection part 122 is rotatably connected to the mounting seat 11; the transmission connection part 122 is the transmission end of the control transmission member 12, and the transmission connection part 122 is in transmission connection with the hook tongue 13; the control connection part 123 is the control end of the control transmission member 12, and the set hole 1231 is formed on the control connection part 123. With such a structure, the force structure of the control transmission member 12 can be made more reasonable, and the structural strength of the control transmission member 12 can be improved.

[0034] like Figure 1 , Figure 3 and Figure 5 As shown, a mounting surface 1233 is formed on the control connection part 123, and the mounting surface 1233 is located on the side of the set hole 1231 facing away from the main body 121, and the mounting surface 1233 is perpendicular to the central axis of the main body 121; the two fixing screw holes 1232 of each linkage lock body 1 are arranged in sequence along the hole axis direction of its set hole 1231, and each fixing screw hole 1232 is connected to the mounting surface 1233, and the hole axis of each fixing screw hole 1232 is perpendicular to the mounting surface 1233, and the hole axis of each fixing screw hole 1232 intersects with the hole axis of the set hole 1231. With such a structure, the connection between the linkage lock body 1 and the linkage rod 2 can be made more stable. The mounting surface 1233 can provide an installation position for the fixing bolt, which is convenient for the fixing bolt to be installed in position.

[0035] like Figure 3 As shown, a receiving chamber 111 is formed in the mounting seat 11, and a control opening 112 and a hook tongue opening 113 are formed in the receiving chamber 111; the transmission end of the control transmission member 12 extends from the control opening 112 into the receiving chamber 111 and is rotatably connected to the mounting seat 11; the hook tongue 13 and the transmission connecting member 14 are both in the receiving chamber 111, and the hook tongue 13 can extend out of the receiving chamber 111 from the hook tongue opening 113 by rotation. The receiving chamber 111 can prevent the transmission components such as the hook tongue 13 and the transmission connecting member 14 from being directly exposed to the external environment, and play a protective role against dust and oil pollution.

[0036] like Figure 3 , Figure 4 and Figure 8 As shown, the mounting seat 11 is formed with a mounting hole 114 connected to the accommodating chamber 111; the control transmission member 12 is formed with a locking portion 124; the linkage lock body 1 also includes a locking assembly 16, the locking assembly 16 includes a control member 161 and a toggle member 162, one end of the control member 161 passes through the mounting hole 114 from the outside of the mounting seat 11 and is connected and fixed to the toggle member 162; in the locked state: the control member 161 can drive the toggle member 162 by rotating, so that the locking portion 124 of the control transmission member 12 is sandwiched between the toggle member 162 and the inner wall of the accommodating chamber 111 for fixing. By adding the locking assembly 16, the personnel need to first release the locking of the control transmission member 12 by the locking assembly 16 before unlocking the linkage handle, so as to prevent the linkage handle from being directly unlocked due to the misoperation of the toggle linkage rod 2 during use.

[0037] like Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, a clamping groove 1621 is formed on one side of the toggle member 162, and the cross-sectional profile of the clamping groove 1621 is a rectangular structure. A connecting hole 1622 connected to the other side of the toggle member 162 is formed on the bottom of the clamping groove 1621; the control member 161 is sequentially formed with a knob portion 1611, a shaft portion 1612 and a clamping portion 1613 along its axis, the knob portion 1611 is located on the outer side of the mounting seat 11, the shaft portion 1612 is inserted into the mounting hole 114 of the mounting seat 11, and a mounting screw hole 1614 is formed on the end surface of the clamping portion 1613, and the clamping portion 1613 is embedded and positioned in the clamping groove 1621 of the toggle member 162; the locking assembly 16 also includes a connecting bolt 163, one end of which passes through the connecting hole 1622 of the toggle member 162 and is locked into the mounting screw hole 1614 of the control member 161. Such a structure can make the assembly of the locking assembly 16 more convenient.

[0038] like Figure 6 and Figure 7 As shown, an anti-mistake recess 1623 is formed on the inner wall of the clamping groove 1621 of the toggle member 162, and the anti-mistake recess 1623 is arranged along the central axis direction of the clamping groove 1621; an anti-mistake convex strip 1615 is formed on the circumferential surface of the clamping portion 1613, and the anti-mistake convex strip 1615 is arranged along the axis direction of the clamping portion 1613, and the anti-mistake convex strip 1615 of the clamping portion 1613 is embedded in the anti-mistake recess 1623 of the clamping groove 1621. Such a structure can make the installation method of the control member 161 and the toggle member 162 unique, prevent assembly errors from affecting normal work, and make installation more convenient.

[0039] like Figure 6 and Figure 8 As shown, the mounting seat 11 is formed with a limited slideway 115, and the knob portion 1611 is formed with a limited protrusion 1616, which is slidably embedded in the limited slideway 115. Such a structure can limit the rotation angle of the operating member 161 to ensure that the toggle member 162 rotates to the right position to switch the state, thereby improving the operation accuracy.

[0040] Example 2

[0041] like Fig. 9As shown, the difference between Example 2 and Example 1 is that: 4 connecting screw holes 21 are formed on the linkage rod 2, of which 2 connecting screw holes 21 are arranged correspondingly to the 2 fixing screw holes 1232 of the linkage lock body 1, and the other 2 connecting screw holes 21 are arranged correspondingly to the 2 fixing screw holes 1232 of another linkage lock body 1; one fixing bolt corresponds to one fixing screw hole 1232 and one connecting screw hole 21, one end of the fixing bolt passes through the fixing screw hole 1232 and is locked into the connecting screw hole 21, and the bolt head of the fixing bolt is placed on the mounting surface 1233 of the corresponding linkage lock body 1. With such a structure, the connection structure between the linkage rod 2 and the linkage lock body 1 can be made more stable.

[0042] Example 3

[0043] The difference between Example 3 and Example 1 is that the operating member of the locking assembly is a lock core, the fixed part of the operating member is fixed in the mounting hole of the mounting seat, the movable part of the operating member is connected to the toggle member, and when in use, the key is inserted into the lock core to drive the toggle member to rotate, so that the locking part of the operating transmission member in the locked state is clamped between the toggle member and the inner wall of the accommodating cavity for fixing. Through such a design, it is possible to prevent unauthorized personnel from performing unlocking operations on the linkage handle, which has better safety.

[0044] The above description is only the preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications, combinations and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the scope of the claims of the utility model.

Claims

1. A linkage handle, characterized in that: The invention comprises a linkage lock body, a linkage rod and a fixing bolt. The linkage lock body comprises a mounting seat, a control transmission member and a hook tongue. The hook tongue and the control transmission member can be rotatably mounted on the mounting seat. One end of the control transmission member is the transmission end, and the other end of the control transmission member is the control end. The transmission end of the control transmission member is connected to the hook tongue in a transmission manner. The control transmission member can drive the hook tongue to lock or unlock by rotating, so that the linkage lock body can switch between a locked state and an unlocked state. A fitting hole is formed on the control end of the control transmission member, and a fixing screw hole connected to the outer surface of the control transmission member is formed on the inner wall of the fitting hole. The linkage rod is inserted into the fitting hole of the linkage lock body. One end of the fixing bolt is connected and fixed to the linkage rod after passing through the fixing screw hole of the linkage lock body.

2. A linkage handle according to claim 1, characterized in that: The control transmission member includes a main body, a transmission connection part and a control connection part; the main body is a long strip structure, one end of the main body is connected to form the transmission connection part, and the other end of the main body is connected to form the control connection part, the transmission connection part and the control connection part are respectively located on opposite sides of the main body, and the end of the main body close to the transmission connection part is rotatably connected to the mounting seat; the transmission connection part is the transmission end of the control transmission member, and the transmission connection part is in transmission connection with the hook tongue; the control connection part is the control end of the control transmission member, and the fitting hole is formed on the control connection part.

3. A linkage handle according to claim 2, characterized in that: A mounting surface is formed on the control connection part, the mounting surface is located on the side of the sleeve hole facing away from the main body, and the mounting surface is perpendicular to the central axis of the main body; the fixing screw hole is connected to the mounting surface, the hole axis of the fixing screw hole is perpendicular to the mounting surface, and the hole axis of the fixing screw hole intersects with the hole axis of the sleeve hole.

4. A linkage handle according to claim 1, characterized in that: A accommodating cavity is formed in the mounting seat, and the accommodating cavity is formed with a control opening and a hook tongue opening; the transmission end of the control transmission member extends from the control opening into the accommodating cavity and is rotatably connected to the mounting seat; the hook tongue is in the accommodating cavity, and the hook tongue can extend out of the accommodating cavity from the hook tongue opening by rotation.

5. A linkage handle according to claim 4, characterized in that: The mounting seat is provided with a mounting hole connected to the accommodating cavity; the operating transmission member is provided with a locking portion; the linkage lock body also includes a locking assembly, the locking assembly includes an operating member and a toggle member, one end of the operating member passes through the mounting hole from the outside of the mounting seat and is connected and fixed to the toggle member; in the locked state: the operating member can drive the toggle member by rotating, so that the locking portion of the operating transmission member is clamped between the toggle member and the inner wall of the accommodating cavity for fixation.

6. A linkage handle according to claim 5, characterized in that: A clamping groove is formed on one side of the toggle member, and the cross-sectional profile of the clamping groove is a polygonal structure. A connecting hole connected to the other side of the toggle member is formed on the bottom of the clamping groove; the control member is sequentially formed with a knob portion, a shaft portion and a clamping portion along its axis, the knob portion is located on the outside of the mounting seat, the shaft portion is inserted into the mounting hole of the mounting seat, a mounting screw hole is formed on the end surface of the clamping portion, and the clamping portion is embedded and positioned in the clamping groove of the toggle member; the locking assembly also includes a connecting bolt, one end of which passes through the connecting hole of the toggle member and is locked into the mounting screw hole of the control member.

7. A linkage handle according to claim 6, characterized in that: An anti-mistake recess is formed on the inner wall of the clamping groove of the toggle member, and the anti-mistake recess is arranged along the central axis direction of the clamping groove; an anti-mistake convex strip is formed on the circumferential surface of the clamping part, and the anti-mistake convex strip is arranged along the axial direction of the clamping part, and the anti-mistake convex strip of the clamping part is embedded in the anti-mistake recess of the clamping groove.

8. A linkage handle according to claim 6, characterized in that: A limited position slideway is formed on the mounting seat, and a limited position protrusion is formed on the knob portion. The limited position protrusion can be slidably embedded in the limited position slideway.

9. The linkage handle according to claim 1, characterized in that: A connecting screw hole is formed on the linkage rod, and one end of the fixing bolt passes through the fixing screw hole and is locked into the connecting screw hole.

10. The linkage handle according to claim 1, characterized in that: The hook tongue is an L-shaped structure, and one end of the hook tongue is rotatably mounted on the mounting seat; it also includes a transmission connecting piece and an elastic piece, and the two ends of the transmission connecting piece are rotatably connected to the middle position of the hook tongue and the transmission end of the control transmission piece respectively; the elastic piece is compressed and arranged between the mounting seat and the transmission connecting piece, so that the linkage lock body can self-lock and maintain the current state in the absence of external force.

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