Handle press fitting device

Abstract

The utility model relates to the technical field of press-fitting devices, and discloses a handle press-fitting device which comprises a base. The supporting seat is opposite to the foundation seat and is used for abutting against the fixed seat; the elastic piece is connected between the foundation seat and the supporting seat and provides elastic force for supporting the supporting seat, so that a downward pressing space for the supporting seat to move is formed between the foundation seat and the supporting seat; and the abutting piece is arranged on the base seat, penetrates through the supporting seat and is used for allowing a center rod to be inserted and abutting against the outer ring of the bearing, so that the axis of the inner ring of the bearing coincides with the axis of the outer ring of the bearing. The assembly convenience of the handle can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of press-fitting devices, and in particular to a handle press-fitting device. Background Art

[0002] The ophthalmometer is a device used to check how light is focused after entering the eyeball. When using the ophthalmometer, the control panel handle needs to be turned to adjust and set the parameters.

[0003] The structure of the control panel handle of the ophthalmometer is shown in Figure 1 , including a fixing seat 1, an assembly ring 2, a center rod 3 and a bearing 4. The fixing seat 1 has a hollow assembly cavity 5, the assembly ring 2 is fixed in the assembly cavity 5, the bearing 4 is coaxially sleeved on the outer wall of the center rod 3, and the fixing seat 1 is sleeved on the outer wall of the bearing 4 through the assembly ring 2, so that the center rod 3 is rotatably connected to the fixing seat 1 through the bearing 4, and the center rod 3 is hollow inside. When assembling the handle, the inner ring of the bearing 4 is usually sleeved on the center rod 3 first, the fixing seat 1 is matched with the assembly ring 2, and then the fixing seat 1 is sleeved on the outer ring of the bearing 4.

[0004] With respect to the above-mentioned related technologies, the handle assembly is usually performed by hammering the bearing 4 into the assembly ring 2. However, since the bearing 4 matched with the center rod 3 is usually a ball bearing 4, when the inner ring and the outer ring of the ball bearing 4 move relative to each other, the axis of the inner ring and the axis of the outer ring will be relatively offset and tilted, making it easy for the bearing 4 to be skewed relative to the fixed seat 1 during the process of being pressed into the assembly ring 2, and assembly is more difficult. Utility Model Content

[0005] In order to improve the convenience of handle assembly, the present application provides a handle press-fitting device.

[0006] The present application provides a handle press-fitting device, which adopts the following technical solution:

[0007] A handle pressing device, comprising

[0008] Base seat;

[0009] A supporting seat, opposite to the base seat, used for the fixing seat to abut against;

[0010] an elastic member connected between the base seat and the support seat, providing elastic force for supporting the support seat, so that a downward pressure space for the support seat to move is formed between the base seat and the support seat; and

[0011] The abutment member is arranged on the base seat and penetrates the support seat, and is used for the center rod to be inserted and abut against the outer ring of the bearing, so that the inner ring axis of the bearing coincides with the outer ring axis.

[0012] By adopting the above technical solution, the center rod is inserted into the abutment to limit the inner ring of the bearing, and the outer ring of the bearing is abutted against the abutment to limit the outer ring of the bearing, so that the inner ring axis and the outer ring axis of the bearing are coincident during assembly, so as to improve the stability of the bearing during assembly. The fixing seat is placed on the supporting seat so that the fixing seat is surrounded by the center rod and the bearing, and then the fixing seat is pressed down to drive the supporting seat to move downward, so that the assembly ring is set on the outer ring of the bearing, so as to quickly realize the assembly between the fixing seat and the center rod, so as to improve the convenience of handle assembly.

[0013] Optionally, the base seat is provided with an adjusting member protruding from the base seat toward the side of the supporting seat, and the adjusting member is threadedly moved on the base seat to adjust the size of the adjusting member protruding from the base seat.

[0014] By adopting the above technical solution, the adjusting member is moved by the thread so that the distance between the adjusting member and the supporting seat can be adjusted according to the distance that the fixed seat needs to move, so that when the supporting seat abuts against the adjusting member, the assembly ring and the bearing are matched, so that the adjusting member can be adjusted according to the different height sizes of the bearing to improve the accuracy and adaptability of the device.

[0015] Optionally, the abutment member includes:

[0016] A positioning sleeve is installed on the base seat and has a mounting cavity for the center rod to extend into, and an end of the positioning sleeve away from the base seat is used for the outer ring of the bearing to abut against;

[0017] The positioning core shaft is located in the installation cavity of the positioning sleeve and is formed with a sleeve connection portion for the center rod to be coaxially sleeved.

[0018] By adopting the above technical solution, the center rod is extended into the installation cavity and inserted into the sleeve until the outer ring of the bearing on the center rod abuts against the positioning sleeve to limit the movement of the outer ring of the bearing relative to the inner ring and limit the movement of the center rod in the horizontal direction, so as to facilitate the alignment of the center rod with the fixed seat.

[0019] Optionally, the support seat is slidably mounted on the outer wall of the positioning sleeve along the axial direction of the sleeve connection portion.

[0020] By adopting the above technical solution, the supporting seat is slidably sleeved on the outer wall of the positioning sleeve to guide the movement of the supporting seat, thereby improving the stability of the supporting seat during movement.

[0021] Optionally, the positioning sleeve is adapted to the assembly cavity of the fixing seat so that the fixing seat can be slidably sleeved on the outer wall of the positioning sleeve along the axial direction of the sleeve connection portion, so that the assembly ring is coaxial with the sleeve connection portion.

[0022] By adopting the above technical solution, the fixing seat and the positioning sleeve are slidably matched, and the assembly ring and the sleeve connection part are coaxial, so that the assembly ring and the center rod are coaxial, and then the assembly ring and the outer ring of the bearing are aligned to achieve the effect of rapid alignment of the assembly ring and the bearing.

[0023] Optionally, the positioning sleeve can be detachably mounted on the base.

[0024] By adopting the above technical solution, the positioning sleeve and the base seat can be detachably installed, and the positioning sleeve can be replaced when the positioning sleeve is damaged.

[0025] Optionally, the positioning mandrel is detachably installed between the positioning sleeve and the base seat.

[0026] Optionally, the elastic member includes a spring and a guide rod, the spring is sleeved on the outer wall of the guide rod, and the two ends of the spring that are far away from each other are respectively positioned relative to the support seat and the base seat; one end of the guide rod is connected to the support seat, and the other end of the guide rod slides on the base seat along the distribution direction of the support seat and the base seat.

[0027] By adopting the above technical solution, the guide rod slides on the base seat to guide the direction of the elastic force of the spring, thereby improving the stability of the spring.

[0028] Optionally, the elastic member further comprises a travel head arranged at one end of the guide rod away from the support seat, and the base seat is provided with a travel groove for the travel head to slide, so as to limit the guide rod from sliding off the base seat.

[0029] By adopting the above technical solution, the cooperation between the stroke head and the stroke groove limits the moving stroke of the guide rod, so that the guide rod is not easy to separate from the base seat when sliding, thereby improving the stability of the elastic member.

[0030] Optionally, the handle pressing device also includes a pressing sleeve, which has an abutment groove for the fixing seat to be pressed into, and the pressing sleeve also has a protective cavity for enclosing the center rod, and the protective cavity is used to protect the center rod when the fixing seat and the center rod move relative to each other.

[0031] By adopting the above technical solution, the pressing sleeve is matched with the fixed seat and the center rod, and the pressing device can be matched with the press. The press can drive the pressing sleeve downward to drive the fixed seat and the center rod to match, thereby further improving the stability of the matching between the fixed seat and the center rod, and protecting the fixed seat and the center rod during assembly.

[0032] In summary, the present application includes at least one of the following beneficial effects:

[0033] By matching the center rod and the bearing with the abutment, the inner ring and outer ring axes of the bearing are made to coincide, and the fixed seat is placed on the support seat so that the fixed seat is pressed down, the fixed seat can be quickly matched with the center rod and the bearing, so that the inner ring and outer ring of the bearing are not easy to move relative to each other when the fixed seat and the bearing are assembled, thereby improving the convenience of handle assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the prior art;

[0035] Figure 2 It is a schematic diagram of the structure of an embodiment of the present application;

[0036] Figure 3 is a cross-sectional view of an embodiment of the present application;

[0037] Figure 4 is a cross-sectional view of the base seat in the embodiment of the present application;

[0038] Figure 5 is a cross-sectional view of the support seat when it is pressed down in the embodiment of the present application;

[0039] Figure 6 yes Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0040] Figure 7 This is a schematic diagram of the structure of the embodiment of the present application in conjunction with the press sleeve;

[0041] Figure 8 It is a cross-sectional view of the mating press sleeve according to the embodiment of the present application.

[0042] Explanation of the accompanying drawings: 1. Fixed seat; 2. Assembly ring; 3. Center rod; 4. Bearing; 5. Assembly cavity; 6. Base seat; 61. Bottom plate; 62. Pad; 7. Support seat; 8. Elastic member; 81. Spring; 82. Guide rod; 83. Travel head; 9. Abutment member; 91. Positioning sleeve; 92. Positioning spindle; 921. Mounting portion; 922. Sleeve connection portion; 10. Pressing space; 11. Adjusting member; 111. Adjusting screw; 112. Support column; 12. Mounting cavity; 13. Travel groove; 14. Pressing sleeve; 15. Abutment groove; 16. Protective cavity; 17. Give way ring groove; 18. Accommodating groove; 19. Matching cavity; 20. First convex edge; 21. First limiting groove; 22. Second convex edge; 23. Second limiting groove. DETAILED DESCRIPTION

[0043] The following is combined with Figure 2-8 This application is described in further detail.

[0044] The present application embodiment discloses a handle press-fit device. Figure 2The handle pressing device includes a base seat 6, a supporting seat 7, an elastic member 8 and abutting member 9.

[0045] Reference Figure 1 and Figure 2 The support seat 7 is located above the base seat 6, and the elastic member 8 is connected between the base seat 6 and the support seat 7 to support the support seat 7, so that a downward pressure space 10 is formed between the support seat 7 and the base seat 6 without other external forces, and the downward pressure space 10 allows the support seat 7 to move downward toward the base seat 6. The abutment member 9 is installed on the base seat 6, and the abutment member 9 passes through the support seat 7 upward. The abutment member 9 is used to cooperate with the center rod 3 and the bearing 4 so that the inner ring axis of the bearing 4 coincides with the outer ring axis.

[0046] When in use, the center rod 3 is matched with the abutment 9, and then the fixed seat 1 is placed on the supporting seat 7 and surrounds the center rod 3. Then, the fixed seat 1 is pressed downward so that the fixed seat 1 drives the supporting seat 7 to move downward, and relative movement occurs between the fixed seat 1 and the center rod 3, and the bearing 4 is inserted into the fixed seat 1.

[0047] Reference Figure 2 and Figure 3 , wherein the abutment member 9 includes a positioning sleeve 91 and a positioning mandrel 92. The positioning sleeve 91 is mounted on the base seat 6, and the positioning sleeve 91 is cylindrical, so that the inner cavity of the positioning sleeve 91 forms a mounting cavity 12, and the inner diameter of the mounting cavity 12 of the positioning sleeve 91 is larger than the outer diameter of the center rod 3. The positioning mandrel 92 includes a mounting portion 921 and a sleeve connection portion 922, both of which are cylindrical, and the sleeve connection portion 922 is coaxially integrally formed at the top of the mounting portion 921, and the outer diameter of the sleeve connection portion 922 is smaller than the outer diameter of the mounting portion 921.

[0048] The positioning core shaft 92 is coaxially placed in the positioning sleeve 91, the outer diameter of the mounting portion 921 is equivalent to the inner diameter of the positioning sleeve 91, and the outer diameter of the sleeve connection portion 922 is consistent with the inner diameter of the center rod 3, so that the center rod 3 can extend into the positioning sleeve 91 and be coaxially sleeved on the outer wall of the sleeve connection portion 922, and in the process of the center rod 3 and the sleeve connection portion 922 being sleeved together, the outer ring of the bearing 4 can abut against the upper end surface of the positioning sleeve 91 to limit the center rod 3 from continuing to move downward. At this time, the outer ring of the bearing 4 overlaps with the inner ring bearing 4 and is coaxial with the center rod 3.

[0049] Reference Figure 3 and Figure 4 The support seat 7 is annular, and the support seat 7 is coaxially slidably sleeved on the outer wall of the positioning sleeve 91 to guide the movement of the support seat 7. The outer diameter of the positioning sleeve 91 is consistent with the inner diameter of the fixing seat 1 at the assembly cavity 5. When the fixing seat 1 is placed on the support seat 7, it is coaxially sleeved on the outer wall of the positioning sleeve 91, so that the fixing seat 1 is coaxial with the center rod 3, and then the fixing seat 1 is coaxial with the bearing 4.

[0050] Reference Figure 3 and Figure 5 Therefore, when assembling the fixed seat 1 and the center rod 3, first extend the center rod 3 into the positioning sleeve 91 and sleeve the sleeve portion 922 until the outer ring of the bearing 4 abuts against the top wall of the positioning sleeve 91, and then sleeve the fixed seat 1 on the outer wall of the positioning sleeve 91 and abut against the upper surface of the support seat 7. At this time, the fixed seat 1 is supported by the support seat 7 and the elastic member 8, so that the assembly ring 2 is coaxially located above the bearing 4; thereafter, the fixed seat 1 is pressed down so that the fixed seat 1 drives the support seat 7 to move downward until the support seat 7 abuts against the upper surface of the base seat 6, that is, drives the assembly ring 2 to move downward until it is sleeved and clamped on the outer wall of the outer ring of the bearing 4, so that the assembly of the fixed seat 1 and the center rod 3 is completed.

[0051] After the fixing base 1 and the center rod 3 are assembled, the pressure on the fixing base 1 is released. At this time, the elastic force of the elastic member 8 drives the support base 7 to move upward, thereby driving the fixing base 1 to move upward together, and driving the center rod 3 to move upward together with the fixing base 1 to disengage from the sleeve portion 922.

[0052] Reference Figure 3 and Figure 4 In addition, since the axial extension height of the mounting ring 2 in this embodiment is greater than the axial extension height of the outer ring of the bearing 4, a ring groove 17 for making way for the mounting ring 2 is provided on the outer wall of the top end of the positioning sleeve 91, so that the mounting ring 2 does not interfere with the positioning ring when it is matched with the bearing 4.

[0053] Reference Figure 2 and Figure 3 There are multiple groups of elastic members 8 distributed along the circumference of the support seat 7. In this embodiment, there are three groups of elastic members 8 evenly distributed along the circumference of the support seat 7. Each group of elastic members 8 includes a spring 81 and a guide rod 82. The guide rod 82 is cylindrical. One end of the guide rod 82 is fixedly connected to the support seat 7. The other end of the guide rod 82 slides on the base seat 6 along its own axial direction. A receiving groove 18 is provided on the surface of the support seat 7 opposite to the base seat 6.

[0054] The spring 81 is sleeved on the outer wall of the guide rod 82, the upper end of the spring 81 extends into the receiving groove 18 of the support seat 7 and is positioned relative to the guide rod 82, and the lower end of the spring 81 extends into the receiving groove 18 of the base seat 6 and abuts against the inner bottom wall of the receiving groove 18. The elastic force of the spring 81 drives the support seat 7 to move upward, so that the downward pressing space 10 is formed, and when the support seat 7 is pressed downward to the base seat 6, the spring 81 can be received in the receiving groove 18, so that the spring 81 is not easily stuck when the support seat 7 moves.

[0055] Reference Figure 3Furthermore, the guide rod 82 has a travel head 83 at the bottom end, and the cross-sectional dimension of the travel head 83 is larger than that of the guide rod 82. The bottom end of the base is provided with a travel groove 13 for the travel head 83 to slide axially along the guide rod 82. The elastic force of the spring 81 drives the support seat 7 to move away from the base until the travel head 83 abuts against the inner top wall of the travel groove 13, so as to limit the moving stroke of the support seat 7 and improve the stability between the spring 81 and the guide rod 82 and between the support seat 7 and the positioning sleeve 91.

[0056] Reference Figure 3 In order to facilitate the replacement of the positioning sleeve 91 and the positioning mandrel 92 , the positioning sleeve 91 can be detachably installed on the base seat 6 , and the positioning mandrel 92 can be detachably installed between the base seat 6 and the positioning sleeve 91 .

[0057] Reference Figure 3 and Figure 6 Specifically, the base 6 includes a bottom plate 61 and a pad 62 that abut against each other. Both the bottom plate 61 and the pad 62 are disc-shaped and are coaxially arranged with the positioning sleeve 91. The bottom plate 61 and the pad 62 are detachably connected by bolts, and the bottom plate 61 is located above the pad 62. The bottom plate 61 is provided with a matching cavity 19 for the positioning sleeve 91 to slide through, and the outer wall of the bottom end of the positioning sleeve 91 protrudes outward to form a first convex edge 20. The bottom inner wall of the bottom of the matching cavity 19 of the bottom plate 61 is provided with a first limiting groove 21 for the first convex edge 20 to abut.

[0058] When the first flange 20 is inserted into the first limiting groove 21, the lower surface of the positioning sleeve 91 is flush with the lower surface of the bottom plate 61, so that the first flange 20 is clamped between the bottom plate 61 and the pad 62. After the chassis and the pad 62 are separated, the positioning sleeve 91 can be taken out from the bottom of the bottom plate 61.

[0059] The outer wall of the bottom end of the mounting portion 921 of the positioning mandrel 92 protrudes outward to form a second convex edge 22, and the positioning sleeve 91 is provided with a second limiting groove 23 for the second convex edge 22 to be pressed into the inner wall of the bottom thereof, so that the positioning mandrel 92 can be assembled into the positioning sleeve 91 from bottom to top. When the second convex edge 22 is pressed into the second limiting groove 23, the lower surface of the positioning mandrel 92 is flush with the lower surface of the positioning sleeve 91, so that the second convex edge 22 is clamped between the positioning sleeve 91 and the backing plate 62. After the bottom plate 61 is separated from the backing plate 62, the positioning mandrel 92 can be taken out from the bottom of the positioning sleeve 91.

[0060] Adaptively, the receiving groove 18 on the base 6 is opened on the side of the bottom plate 61 away from the pad 62 , the guide rod 82 passes through the bottom plate 61 , and the travel groove 13 passes through the pad 62 and is formed between the bottom plate 61 and the pad 62 .

[0061] Reference Figure 4Furthermore, in order to improve the accuracy of assembly, an adjusting member 11 is threadedly movable on the base seat 6. Three adjusting members 11 are evenly spaced along the circumference of the bottom plate 61. The adjusting member 11 is threadedly movable on the bottom plate 61 along the axial direction of the bottom plate 61, and the top end of the adjusting member 11 protrudes upward from the side of the bottom plate 61 facing the support seat 7. A downward pressing space 10 is formed between the lower surface of the support seat 7 and the upper surface of the adjusting member 11. The size of the downward pressing space 10 can be adjusted by threading the adjusting member 11, so that the downward moving distance of the fixing seat 1 can be adjusted according to the assembly size of the fixing seat 1 and the center rod 3, so as to improve the accuracy of assembly.

[0062] Reference Figure 4 The adjusting member 11 in this embodiment includes an adjusting screw 111 threadedly moved on the bottom plate 61, and a groove for making way for the head of the adjusting screw 111 to be pressed into the top of the head of the adjusting screw 111 is provided on the upper surface of the bottom plate 61. When the fixing seat 1 is pressed down, the supporting seat 7 is driven to press to the top of the head of the adjusting screw 111.

[0063] Furthermore, the adjusting member 11 further includes a support column 112, which is a flat-end set screw. The support column 112 is threadedly disposed on the backing plate 62, and the upper end of the support column 112 abuts against the lower end of the adjusting screw 111 to support the adjusting screw 111, so as to reduce the tendency of the adjusting screw 111 to move downward when the fixing seat 1 is pressed down.

[0064] Reference Figure 7 and Figure 8 In addition, the handle pressing device also includes a pressing sleeve 14, which is cylindrical and coaxial with the center rod 3 when in use. Specifically, a protective cavity 16 for coaxially enclosing the center rod 3 is formed in the pressing sleeve 14, and the upper section of the protective cavity 16 slides coaxially with the outer wall of the center rod 3. The pressing sleeve 14 is provided with an abutment groove 15 at the lower section of the protective cavity 16, and the abutment groove 15 is annular and the inner diameter of the pressing sleeve 14 at the abutment groove 15 is consistent with the outer diameter of the fixing seat 1, and the inner diameter of the pressing sleeve 14 at the abutment groove 15 is larger than the inner diameter of the pressing sleeve 14 at the protective cavity 16, so that the pressing sleeve 14 can be enclosed around the center rod 3 while being sleeved on the upper end of the fixing seat 1 through the abutment groove 15.

[0065] Thus, when the center rod 3 and the fixed seat 1 are assembled, the pressing sleeve 14 is matched with the center rod 3 and the fixed seat 1 at the same time, and then the pressing device is sent to the press, and the pressing sleeve 14 is pressed down by the press to provide the fixed seat 1 with power to move downward to assemble with the center rod 3, and the top end of the center rod 3 never extends out of the top end of the pressing sleeve 14 during the movement of the pressing sleeve 14.

[0066] The implementation principle of a handle pressing device in an embodiment of the present application is as follows: before working, the support column 112 is first loosened, and after the position of the adjusting screw 111 is adjusted, the support column 112 is tightened to abut against the adjusting screw 111 to prevent loosening.

[0067] Then, extend the center rod 3 into the positioning sleeve 91 and insert it into the sleeve joint 922, so that the outer ring of the bearing 4 abuts against the top of the positioning sleeve 91, and then put the fixed seat 1 on the positioning sleeve 91, so that the bottom surface of the fixed seat 1 abuts against the support seat 7, and then put the pressing sleeve 14 on the center rod 3. After that, put the assembled whole into the manual press, apply appropriate force to move the pressing sleeve 14 downward, drive the outer ring of the bearing 4 to press into the inner ring of the assembly ring 2, and at the same time drive the support seat 7 to move downward, and the spring 81 is compressed until the lower surface of the support seat 7 abuts against the end face of the adjusting screw 111, and the movement stops. At this time, the bearing 4 is completely pressed into the assembly ring 2, and the center rod 3 and the fixed seat 1 are assembled.

[0068] After the center rod 3 and the fixing seat 1 are assembled, the manual press pressure is released, the spring 81 is reset and drives the assembled parts to move upward as a whole. The assembled parts are removed as a whole, and the handle pressing sleeve 14 is removed, and the work is completed.

[0069] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A handle press-fitting device, characterized in that: include: Base (6); A supporting seat (7) opposite to the base seat (6) and used for the fixing seat (1) to abut against; an elastic member (8) connected between the base seat (6) and the support seat (7) to provide an elastic force for supporting the support seat (7), so that a downward pressure space (10) is formed between the base seat (6) and the support seat (7) for the support seat (7) to move; and The abutment member (9) is arranged on the base seat (6) and penetrates the support seat (7), and is used for the center rod (3) to be inserted and abut against the outer ring of the bearing (4), so that the inner ring axis and the outer ring axis of the bearing (4) coincide with each other.

2. A handle press-fitting device according to claim 1, characterized in that: The base seat (6) is provided with an adjusting member (11) protruding from the side of the base seat (6) facing the supporting seat (7), and the adjusting member (11) is threadedly movable on the base seat (6) to adjust the size of the adjusting member protruding from the base seat (6).

3. A handle press-fitting device according to claim 1, characterized in that: The abutment member (9) comprises: A positioning sleeve (91) is mounted on the base seat (6) and has a mounting cavity (12) for the center rod (3) to extend into, and an end of the positioning sleeve (91) away from the base seat (6) is used for the outer ring of the bearing (4) to abut against; The positioning core shaft (92) is located in the installation cavity (12) of the positioning sleeve (91) and is formed with a sleeve connection portion (922) for the center rod (3) to be coaxially sleeved.

4. A handle press-fitting device according to claim 3, characterized in that: The support seat (7) is slidably sleeved on the outer wall of the positioning sleeve (91) along the axial direction of the sleeve connection portion (922).

5. A handle press-fitting device according to claim 3, characterized in that: The positioning sleeve (91) is adapted to the assembly cavity (5) of the fixing seat (1) so that the fixing seat (1) can be slidably sleeved on the outer wall of the positioning sleeve (91) along the axial direction of the sleeve connection portion (922), so that the assembly ring (2) and the sleeve connection portion (922) are coaxial.

6. A handle press-fitting device according to claim 3, characterized in that: The positioning sleeve (91) is detachably mounted on the base seat (6).

7. A handle press-fitting device according to claim 6, characterized in that: The positioning core shaft (92) is detachably mounted between the positioning sleeve (91) and the base seat (6).

8. A handle press-fitting device according to claim 1, characterized in that: The elastic member (8) comprises a spring (81) and a guide rod (82); the spring (81) is sleeved on the outer wall of the guide rod (82), and two ends of the spring (81) that are away from each other are respectively positioned relative to the support seat (7) and the base seat (6); one end of the guide rod (82) is connected to the support seat (7), and the other end of the guide rod (82) that is opposite to the support seat (7) slides on the base seat (6) along the distribution direction of the support seat (7) and the base seat (6).

9. A handle press-fitting device according to claim 8, characterized in that: The elastic member (8) further comprises a travel head (83) arranged at one end of the guide rod (82) away from the support seat (7), and the base seat (6) is provided with a travel groove (13) for the travel head (83) to slide, so as to limit the guide rod (82) from sliding off the base seat (6) on the base seat (6).

10. A handle pressing device according to any one of claims 1 to 9, characterized in that: The handle pressing device further comprises a pressing sleeve (14), the pressing sleeve (14) having an abutting groove (15) for the fixing seat (1) to abut against, the pressing sleeve (14) further comprising a protective cavity (16) for enclosing the central rod (3), the protective cavity (16) being used to enclose the central rod (3) when the fixing seat (1) and the central rod (3) move relative to each other.

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