Base-free handle connecting structure

Abstract

A base-free handle connecting structure comprises a handle, a mounting seat and a clamping assembly which is connected with the mounting seat and used for clamping and releasing clamping of the handle, the handle is provided with a mounting hole used for being connected with the mounting seat, the outer wall of the mounting seat is provided with at least one limiting part, the limiting part is arranged in a wedge-shaped protruding mode, and the limiting part is provided with a limiting hole used for being connected with the mounting seat. A wedge-shaped groove matched with the wedge-shaped protrusion is formed in the mounting hole, and the handle is connected with the wedge-shaped groove in an abutting mode through the limiting part to form tight fit and fastening connection. Through the close fit design of the wedge-shaped limiting part and the wedge-shaped groove, stable embedded connection is formed between the handle and the mounting base, the loosening problem caused by stress, vibration or friction is avoided, and therefore the service life of the lever handle is prolonged, and the safety of the lever handle is improved. A traditional set screw is fixed by means of friction force and is easily influenced by material hardness and machining precision, while the handle adopts a wedge-shaped limiting structure, so that the handle provides extra locking force through self deformation or pressing action during installation, and the fastening effect in long-term use is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of handlebar connection structure without pedestal, belong to door and window handle field. BACKGROUND

[0002] Handle is indispensable component on door and window, and the opening and locking of door and window can be realized by handle, the pedestal of existing handle is due to process limitation, and the pedestal part is mostly exposed, not only reduces the sense of vision, also affects the grade sense of commodity to some extent.Therefore, no pedestal handle appears on the market, and no pedestal handle is not without pedestal, but the pedestal is not exposed.

[0003] In the existing design of no pedestal handle, the handle is usually separated from the mounting seat, and the handle is fixed on the mounting seat by a set screw.This design is relatively convenient when installing, but in the long-term use process, due to the influence of stress, vibration or friction, the set screw may gradually loosen, resulting in the handle loosening or even falling off.This not only affects the use stability of the handle, but also may affect the normal opening and closing of the door and window or equipment, and even cause safety hazards.In addition, the fixing method of set screw depends on friction, which is greatly affected by material hardness and machining accuracy, and may not maintain enough locking force in long-term use, thus further aggravating the loosening problem.Therefore, how to improve the connection stability of no pedestal handle and avoid loosening and falling off phenomenon is a technical problem to be solved in this field. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the shortcomings and deficiencies of prior art, and provides a handlebar connection structure without pedestal.

[0005] A handlebar connection structure without pedestal, comprising a handle, a mounting seat and a clamping component connected with the mounting seat for clamping and releasing the handle, the handle is provided with a mounting hole for connecting with the mounting seat, the outer wall of the mounting seat is provided with at least one limiting part, the limiting part is wedge-shaped protrusion, the mounting hole is provided with a wedge-shaped groove matched with the wedge-shaped protrusion, and the handle is tightly connected by the abutment of the limiting part and the wedge-shaped groove.The wedge-shaped limiting part and the wedge-shaped groove are tightly matched, the handle and the mounting seat are stably embedded and connected, the loosening problem caused by stress, vibration or friction is avoided, and the service life and safety of the handle are improved.The traditional set screw is fixed by relying on friction, which is easily affected by material hardness and machining accuracy, and the utility model adopts wedge-shaped limiting structure, so that the handle provides additional locking force by self-deformation or compression during installation, and ensures the fastening effect in long-term use.

[0006] Preferably, the limiting part comprises a first contact surface arranged obliquely, and the wedge-shaped slot is provided with a second contact surface matched with the first contact surface, and the abutment of the first contact surface and the second contact surface forms an interference fit to tightly connect the handle and the mounting seat. Through the interference fit of the first contact surface and the second contact surface, the handle and the mounting seat form a stronger locking force during assembly, thereby improving the stability of the connection and avoiding the problems of loosening or falling off due to long-term use. The obliquely arranged first contact surface and the matched second contact surface can form a larger contact area when abutting, which can not only ensure the tight connection, but also can be released from the interference fit by appropriate external force when needed, so that the handle and the mounting seat can be quickly disassembled, facilitating maintenance and replacement, and improving the use experience.

[0007] Further, the limiting part is arranged on both sides of the mounting seat, and the number of each side is two. By arranging two limiting parts on both sides of the mounting seat, the handle is limited in multiple directions, further improving the stability of the connection and avoiding the phenomenon of deviation or loosening caused by single-sided stress. The wedge-shaped cooperation of the four limiting parts makes the handle form a stronger self-locking effect during assembly, maintains stable connection during normal use, and reduces the need for later maintenance. The number of limiting parts can be changed according to design needs to ensure the use effect.

[0008] Preferably, the handle is provided with a threaded hole facing the mounting seat, and the mounting seat is provided with a connecting groove. After the handle is sleeved outside the mounting seat, the screw is passed through the threaded hole and abuts against the bottom of the connecting groove to form a tight fit. In addition to the tight fit provided by the wedge-shaped limiting structure, this design also increases the screw fixation, making the connection between the handle and the mounting seat more secure, further preventing loosening or falling off due to long-term use, and improving the durability and safety of the handle. By passing the screw through the threaded hole and abutting against the bottom of the connecting groove, the axial (forward and backward direction) and radial (left and right direction) displacement of the handle can be effectively limited, ensuring that the handle can remain stable and not shake in all directions, and improving the use experience. After the handle is sleeved outside the mounting seat, only the screw needs to be tightened to complete the fixation, and the entire installation process is simple and fast, without complex assembly steps, improving production and maintenance efficiency. Combined with screw fixation and wedge-shaped limiting structure, even if there is a certain size tolerance in the manufacturing process, the screw can be adjusted through the tightening force to ensure the assembly accuracy and improve the overall quality stability.

[0009] Preferably, the mounting seat is connected with a driving shaft through a shaft sleeve, and the handle drives the driving shaft to rotate through a rotating action. By arranging a shaft sleeve between the mounting seat and the driving shaft, the rotation of the driving shaft is more stable, reducing energy loss caused by direct friction, improving the transmission efficiency of the handle, and ensuring smooth opening and closing of the door, window or equipment.

[0010] Preferably, the clamping assembly comprises a base and a positioning ring linked with the handle, the base is provided with a first center hole for the driving shaft to pass through and a clamping hole arranged around the center hole, the clamping hole is provided with an elastic part and a ball above the elastic part, the positioning ring is provided with a second center hole for the driving shaft to pass through, the outer periphery of the positioning ring is provided with at least one driving groove, the base is fixedly provided with a limiting baffle for limiting the ball from bouncing out, when the ball enters the clamping hole under the elastic force of the elastic part, the base and the positioning ring are in the clamping state; rotating the positioning ring, the bottom of the positioning ring extrudes the ball to one side of the clamping hole, the ball leaves the clamping hole, and the base and the positioning ring are unclamped. Through the ball structure in the clamping assembly, accurate positioning of the handle at a specific angle is realized, it is ensured that the handle cannot be easily rotated when it is not subjected to external force, and the stability and safety of use are improved. The clamping design of the elastic part + ball can reduce the direct wear between parts compared with the traditional friction locking mode, ensure that the handle can still be stably locked after long-term use, and improve the durability of the handle. The elastic part is a spring or a spring sleeve, which is selected according to actual design requirements.

[0011] Further, the limiting baffle is provided with a limiting hole corresponding to the clamping hole, the diameter of the limiting hole is smaller than the diameter of the ball, the handle is provided with a limiting block matched with the driving groove, and the handle limits the ball from bouncing out and clamping in the positioning ring through the limiting block. The diameter of the limiting hole on the limiting baffle is smaller than the diameter of the ball, so that the ball cannot completely come out of the clamping hole when being pushed by the elastic force of the elastic part, but is restricted by the limiting hole and the limiting block, ensuring that the clamping structure is long-term stable and reliable, and the handle function is not affected by the loosening or falling of the ball.

[0012] Further, the limiting baffle is provided with a vertical fixing piece, the base is provided with a fixed groove in tight fit with the outer wall of the fixing piece, the limiting baffle is provided with a plurality of positioning grooves at intervals on the outer periphery, and the base is provided with a positioning block matched with the positioning grooves. The fixing piece is inserted into the fixed groove on the base to form a tight fit connection, so that the limiting baffle cannot be loosened or displaced due to long-term use or external force, thereby ensuring the long-term reliability of the clamping mechanism. The limiting baffle can be stably and accurately installed by arranging a plurality of positioning grooves at intervals on the outer periphery of the limiting baffle and arranging corresponding positioning blocks on the base.

[0013] The utility model discloses the following beneficial effects: through the tight fit design of wedge limiting part and wedge groove, the handle and mounting seat form the stable embedded connection, avoid the loosening problem caused by stress, vibration or friction, thereby improve the service life and safety of handle. Traditional lock screw relies on friction force to fix, is easily affected by material hardness and machining accuracy, and the utility model adopts wedge limiting structure, so that the handle provides additional locking force through self deformation or compression effect when installing, guarantees the fastening effect in long-term use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0015] Figure 1 This is a structural diagram of the main body of this utility model;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is a cross-sectional view of the handle and mounting base in this utility model;

[0018] Figure 4 for Figure 3 Enlarged detail view of point A in the middle;

[0019] Figure 5 This is a side view of the structure of this utility model.

[0020] Figure 6 This is a cross-sectional view of the present invention;

[0021] Figure 7 This is a structural diagram of the present invention without the handle;

[0022] In the diagram, 1. Handle; 11. Mounting hole; 12. Wedge groove; 13. Second contact surface; 14. Step; 15. Threaded hole; 16. Screw; 17. Limiting block; 2. Mounting base; 21. Connecting groove; 22. Limiting part; 23. First contact surface; 24. Gap; 25. Drive shaft; 3. Locking assembly; 31. Base; 311. First center hole; 312. Locking hole; 313. Elastic part; 314. Ball; 315. Fixing groove; 316. Positioning block; 32. Positioning ring; 321. Second center hole; 322. Drive groove; 33. Limiting baffle; 331. Limiting hole; 332. Fixing piece; 333. Positioning groove; 4. Bushing. Detailed Implementation

[0023] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0024] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0025] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0026] like Figures 1-7 The illustration shows an embodiment of a baseless handle connection structure according to this utility model. It includes a handle 1, a mounting base 2, and a locking assembly 3 connected to the mounting base 2 for locking and unlocking the handle 1. The handle 1 has a mounting hole 11 for connecting to the mounting base 2. The outer wall of the mounting base 2 has at least one limiting part 22, which is a wedge-shaped protrusion. The mounting hole 11 has a wedge-shaped groove 12 that matches the wedge-shaped protrusion. The handle 1 is tightly fitted and secured by the limiting part 22 and the wedge-shaped groove 12. Through the tight fit design of the wedge-shaped limiting part 22 and the wedge-shaped groove 12, a stable mating connection is formed between the handle 1 and the mounting base 2, avoiding loosening caused by force, vibration, or friction, thereby improving the service life and safety of the handle. Traditional set screws 16 rely on friction for fixing, which is easily affected by material hardness and machining precision. However, this utility model adopts a wedge-shaped limiting structure, which allows the handle 1 to provide additional locking force through its own deformation or clamping action during installation, ensuring the fastening effect during long-term use.

[0027] The handle 1 is provided with a threaded hole 15 facing the mounting seat 2, the mounting seat 2 is provided with a connecting groove 21, and after the handle 1 is sleeved outside the mounting seat 2, the screw 16 is penetrated through the threaded hole 15 and abuts against the bottom of the connecting groove 21 to form a tight fit. In addition to the tight fit provided by the wedge-shaped limiting structure, the design also increases the fixation of the screw 16, so that the connection between the handle 1 and the mounting seat 2 is more firm, further preventing loosening or falling off caused by long-term use, and improving the durability and safety of the handle. By penetrating the screw 16 through the threaded hole 15 and abutting against the bottom of the connecting groove 21, the axial (forward and backward direction) and radial (left and right direction) displacement of the handle 1 can be effectively limited, ensuring that the handle 1 can remain stable and not shake in all directions, and improving the use experience. After the handle 1 is sleeved outside the mounting seat 2, only the screw 16 needs to be tightened to complete the fixation, and the entire installation process is simple and fast, without complex assembly steps, improving production and maintenance efficiency. Combined with the fixation of the screw 16 and the wedge-shaped limiting structure, even if there is a certain size tolerance in the manufacturing process, the screw 16 can be adjusted by the tightening force to ensure the assembly accuracy and improve the overall quality stability.

[0028] The mounting seat 2 is connected with the driving shaft 25 through the shaft sleeve 4, and the handle 1 drives the driving shaft 25 to rotate through a rotating action. By connecting the mounting seat 2 and the driving shaft 25 through the shaft sleeve 4, the rotation of the driving shaft 25 is more stable, the energy loss caused by direct friction is reduced, the transmission efficiency of the handle is improved, and the opening and closing of the door and window or equipment is ensured to be smooth.

[0029] The difference between the embodiment and the above-mentioned embodiment is that the limiting portion 22 includes a first contact surface 23 arranged obliquely, and the wedge-shaped groove 12 is provided with a second contact surface 13 matched with the first contact surface 23, and the first contact surface 23 and the second contact surface 13 abut to form an interference fit to tightly connect the handle 1 and the mounting seat 2. Through the interference fit of the first contact surface 23 and the second contact surface 13, the handle 1 and the mounting seat 2 form a stronger locking force during assembly, thereby improving the stability of the connection and avoiding loosening or falling off caused by long-term use. The obliquely arranged first contact surface 23 and the matched second contact surface 13 can form a larger contact area when abutting, which can not only ensure the tight connection, but also can be disengaged by appropriate external force when needed, so that the handle 1 and the mounting seat 2 can be quickly disassembled and assembled, facilitating maintenance and replacement, and improving the use experience.

[0030] The difference between this embodiment and the above embodiments is that the limiting portions 22 are arranged on both sides of the mounting base 2, and the number of limiting portions on each side is two. By arranging two limiting portions 22 on each side of the mounting base 2, the handle 1 is limited in multiple directions, further improving the stability of the connection, and avoiding the phenomenon of deviation or loosening caused by unilateral stress. The wedge-shaped cooperation of the four limiting portions 22 makes the handle 1 form a stronger self-locking effect during assembly, maintains stable connection during normal use, and reduces the need for later maintenance. The number of limiting portions 22 can be changed according to design needs to ensure the use effect.

[0031] The difference between this embodiment and the above embodiments is that the wedge-shaped groove 12 is provided with a step 14 for the wedge-shaped protrusion to be clamped with the wedge-shaped groove 12, and the step 14 has a gap 24 with the front side of the limiting portion 22. By arranging the step 14 on the wedge-shaped groove 12, the wedge-shaped protrusion can be more firmly clamped in the wedge-shaped groove 12, forming additional mechanical limiting, thereby effectively preventing the handle 1 from loosening or falling off due to long-term use or external force. After the wedge-shaped protrusion of the limiting portion 22 is clamped with the step 14, not only the interference fit provides a fastening force, but also a physical blocking structure is formed, which can ensure that the handle 1 will not easily slip off even if the stress direction changes, improving the overall stability. By reserving a certain gap 24 between the step 14 and the front side of the limiting portion 22, a certain buffer space can be provided after the handle 1 is assembled, and the handle 1 can be more smoothly slid into the limiting position during installation, reducing the assembly resistance caused by the interference fit.

[0032] The clamping assembly 3 comprises a base 31 and a positioning ring 32 connected with the handle 1, the base 31 is provided with a first center hole 311 for the driving shaft 25 to pass through and a clamping hole 312 arranged around the center hole, the clamping hole 312 is provided with an elastic part 313 and a ball 314 above the elastic part 313, the positioning ring 32 is provided with a second center hole 321 for the driving shaft 25 to pass through, the outer periphery of the positioning ring 32 is provided with at least one driving groove 322, the base 31 is fixedly provided with a limiting baffle 33 for limiting the ball 314 from being ejected, when the ball 314 enters the clamping hole 312 under the elastic force of the elastic part 313, the base 31 and the positioning ring 32 are in the clamping state; rotating the positioning ring 32, the bottom of the positioning ring 32 extrudes the ball 314 to one side of the clamping hole 312, the ball 314 leaves the clamping hole 312, and the base 31 and the positioning ring 32 are released from the clamping. Through the structure of the ball 314 in the clamping assembly 3, the handle 1 is accurately positioned at a specific angle, ensuring that the handle cannot be easily rotated when it is not subjected to external force, improving the stability and safety of use. The clamping design of the elastic part 313 + the ball 314 can reduce the direct wear between parts compared with the traditional friction locking mode, ensuring that it can still be stably locked after long-term use and improving the durability of the handle. The elastic part 313 is a spring or a spring cover, which is selected according to actual design requirements.

[0033] The difference between the present embodiment and the above-mentioned embodiments is that the limiting baffle 33 is provided with a limiting hole 331 corresponding to the clamping hole 312, the diameter of the limiting hole 331 is smaller than the diameter of the ball 314, the handle 1 is provided with a limiting block 17 matched with the driving groove 322, and the handle 1 limits the ball 314 from being ejected and clamped in the positioning ring through the limiting block 17. The diameter of the limiting hole 331 on the limiting baffle 33 is smaller than the diameter of the ball 314, so that the ball 314 will not completely come out of the clamping hole 312 when it is pushed by the elastic force of the elastic part 313, but is restricted by the limiting hole 331 and the limiting block 17, ensuring that the clamping structure is long-term stable and reliable, and will not affect the handle function due to the loosening or falling of the ball 314.

[0034] The limiting baffle 33 is provided with a fixed plate 332 arranged vertically, the base 31 is provided with a fixed groove 315 tightly matched with the outer wall of the fixed plate 332, the limiting baffle 33 is provided with a plurality of positioning grooves 333 arranged at intervals on the outer periphery, and the base 31 is provided with a positioning block 316 matched with the positioning grooves 333. The fixed plate 332 is inserted into the fixed groove 315 on the base 31 to form a tight fit connection, ensuring that the limiting baffle 33 will not loosen or shift due to long-term use or external force, thereby ensuring the long-term reliability of the clamping mechanism. By arranging multiple positioning grooves 333 at intervals on the outer periphery of the limiting baffle 33 and arranging corresponding positioning blocks 316 on the base 31, the limiting baffle 33 can be stably and accurately installed.

[0035] The above only discloses preferred embodiments of the present application, and of course cannot limit the scope of the present application, therefore equivalent changes made according to the claims of the present application still belong to the scope of the present application.

[0036] While the present application has been described with reference to several specific embodiments, it is understood that the present application is not limited to the specific embodiments disclosed. The present application is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A baseless lever handle connection structure, characterized by: The handle, mounting seat and clamping assembly connected with the mounting seat for handle clamping and unclamping, the handle is provided with mounting hole for connecting with the mounting seat, the mounting seat outer wall is provided with at least one limiting part, the limiting part is wedge-shaped convex setting, the mounting hole is provided with wedge-shaped groove matched with the wedge-shaped convex, the handle is tightly fastened by the abutment of the limiting part and the wedge-shaped groove.

2. The escutcheonless lever handle set according to claim 1, wherein: The limiting part includes an inclined first contact surface, and the wedge-shaped groove is provided with a second contact surface matched with the first contact surface, and the abutment of the first contact surface and the second contact surface forms an interference fit to tightly connect the handle and the mounting seat.

3. A baseless lever handle assembly according to claim 1 or claim 2, wherein: The limiting part is arranged on both sides of the mounting seat, and the number of each side is two.

4. The escutcheonless lever handle connection of claim 1, wherein: The handle is provided with a threaded hole facing the mounting seat, and the mounting seat is provided with a connecting groove. After the handle is sleeved on the outside of the mounting seat, the screw is passed through the threaded hole and abuts against the bottom of the connecting groove to form a tight fit.

5. The escutcheonless lever handle set according to claim 1, wherein: The mounting seat is connected with the driving shaft through the shaft sleeve, and the handle drives the driving shaft to rotate through the rotating action.

6. The escutcheonless handle connection structure according to claim 1, wherein: The clamping assembly includes a base and a positioning ring connected with the handle, the base is provided with a first center hole for the driving shaft to pass through and a clamping hole arranged around the center hole, the clamping hole is provided with an elastic part and a ball above the elastic part, the positioning ring is provided with a second center hole for the driving shaft to pass through, the outer periphery of the positioning ring is provided with at least one driving groove, and the base is fixedly provided with a limiting baffle for limiting the ejection of the ball, when the ball enters the clamping hole under the elastic force of the elastic part, the base and the positioning ring are in the clamping state; rotating the positioning ring, the bottom of the positioning ring extrudes the ball to one side of the clamping hole, the ball leaves the clamping hole, and the base and the positioning ring are unclamped.

7. The escutcheonless handle connection structure according to claim 6, wherein: The limiting baffle is provided with a limiting hole corresponding to the clamping hole, the diameter of the limiting hole is smaller than the diameter of the ball, the handle is provided with a limiting block matched with the driving groove, and the handle limits the ball from being ejected and clamped in the positioning ring.

8. A baseless escutcheon handle connection structure according to claim 6 or 7, wherein: The limiting baffle is provided with a vertically arranged fixing piece, the base is provided with a fixing groove matched with the outer wall of the fixing piece to form a tight fit, the limiting baffle is provided with a plurality of positioning grooves at intervals, and the base is provided with a positioning block matched with the positioning groove.

Images