Welding clamp of inner handle assembly
By designing a welding fixture for the inner handle assembly and utilizing the cooperation of limit blocks and positioning blocks, the problem of misalignment between the rotating shaft and the grip was solved, thereby improving the welding qualification rate and reducing the difficulty of operation.
Patent Information
- Application Number
- CN202520478244.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-19
AI Technical Summary
Existing technologies cannot effectively guarantee the relative orientation consistency between the rotating shaft and the handle in the handle assembly inside the air defense door, which affects the welding qualification rate.
A welding fixture for an inner handle assembly was designed, comprising a base plate, a support seat, a positioning mechanism, and a clamping mechanism. The alignment and fixation of the rotating shaft with the handle are ensured by the cooperation of the limiting block and the positioning block, and the clamping is achieved by the use of a telescopic cylinder to adapt to the adjustment of rotating shafts of different lengths.
This achieves accurate positioning and fixation of the rotating shaft and the handle, improving the welding qualification rate and reducing the difficulty of operation and labor intensity.
Smart Images
Figure CN223863197U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tool fixture technical field, especially a kind of welding piece clamp of inner handle group. BACKGROUND
[0002] Civil air defense door is the door of the entrance of people's air defense engineering, which belongs to civil defense protection equipment. They are mainly used to protect personnel and material safety in wartime or disaster. The civil air defense door handle is an important part of the air defense engineering, mainly used for opening and closing the civil air defense door to ensure that personnel evacuation and material transfer can be quickly and safely in emergency. Figure 1 It is a civil air defense door handle assembly, which comprises a handle 61 and a rotating shaft 62. The end of the rotating shaft 62 has a flange 63 protruding radially, and the other end has a square shaft segment 64. When assembling, as shown in Figure 2 The rotating shaft 62 is inserted into the sleeve 65 at the end of the handle 61, and then welded to the sleeve 65. At the same time, the orientation of the handle 61 needs to be consistent with one of the diagonal directions of the square shaft segment 64. Therefore, how to ensure the relative orientation of the rotating shaft and the handle is a problem to be solved. SUMMARY
[0003] In view of the above problems of the prior art, the technical problem to be solved by the utility model is to provide an inner handle assembly welding jig with reasonable structure design, convenient operation and use, which can limit the relative orientation of the rotating shaft and the handle, and is beneficial to ensuring the welding qualification rate.
[0004] To solve the above technical problems, the utility model adopts the following technical scheme:
[0005] A welding jig for an inner handle assembly, comprising a base plate, the base plate having a support seat arranged vertically, the top of the support seat having a positioning mechanism for positioning the handle to be welded in the transverse direction and a first clamping mechanism for pressing the handle to be welded; one side of the support seat has a limiting block and a positioning block arranged vertically, the limiting block has a limiting hole arranged vertically through the limiting block, the limiting hole is located directly below the sleeve of the handle to be welded arranged on the support seat, and the inner hole size matches the diameter of the rotating shaft to be welded; the positioning block is located directly below the limiting block and has a square positioning hole arranged vertically through the positioning block, which matches the square shaft segment of the rotating shaft to be welded; one diagonal line of the square positioning hole is arranged in the transverse direction of the support seat.
[0006] With the above structure, the to-be-welded handle is placed on the positioning mechanism of the support base in the transverse direction, and the to-be-welded handle is pressed by the first clamping mechanism, at this time, the sleeve is located directly above the limiting hole, the to-be-welded rotating shaft is passed through the sleeve from top to bottom, and the square shaft segment at the lower end is passed through the square positioning hole, since one diagonal line of the square positioning hole is also arranged in the transverse direction, that is, consistent with the orientation of the handle, under the action of gravity, the flange at the top is in limiting fit with the sleeve, and the rotating shaft and the handle are assembled in place, thereby facilitating welding. The above structure is simple, convenient to operate and use, and the relative positions of the handle and the square shaft segment of the rotating shaft can be determined through the square positioning hole and the positioning mechanism, thereby ensuring the consistency of welding and facilitating the guarantee of the qualified rate.
[0007] Further, the positioning block is adjustably mounted on the support base through a vertically arranged guide mechanism, and a locking mechanism is arranged between the positioning block and the support base.
[0008] On the same series of fireproof doors, according to the different sizes of the fireproof doors, the lengths of the rotating shafts are also different, and by adjusting the positioning block up and down, the distance between the limiting block and the positioning block can be adjusted, thereby meeting the assembly requirements of rotating shafts of different lengths.
[0009] Further, the guide mechanism is a guide groove vertically arranged on the support base, a sliding block is matched in the guide groove, and the positioning block is fixedly installed on the sliding block.
[0010] Further, the support base has a first insertion hole arranged in the width direction of the guide groove, the first insertion hole is arranged through the guide groove, and a plurality of first insertion holes are arranged in the vertical direction; the sliding block has a second insertion hole arranged corresponding to the first insertion hole; and the locking mechanism is a locking pin inserted into the first insertion hole and the second insertion hole.
[0011] In this way, by inserting the sliding block into different first insertion holes through the locking pin, the height of the positioning block can be adjusted to meet the assembly requirements of rotating shafts of different lengths.
[0012] Further, the limiting hole has an opening arranged in a U shape and penetrating through the side away from the support base, and the width of the opening matches the diameter of the to-be-welded rotating shaft.
[0013] In this way, after welding is completed, the lower end of the rotating shaft can be taken out of the square positioning hole, and then the inner handle assembly can be taken out in the transverse direction, thereby reducing the extraction height of the material, and facilitating the reduction of labor intensity.
[0014] Further, one side of the support seat in the lateral direction is provided with a second clamping mechanism for pressing the rotating shaft to be welded, the second clamping mechanism is located on one side of the limiting block and the positioning block in the horizontal direction, and the clamping end is located between the limiting block and the positioning block.
[0015] Further, the first clamping mechanism and the second clamping mechanism each comprise a telescopic cylinder, a pressing arm provided towards the inner handle assembly is hinged on the piston rod of the telescopic cylinder, and one side of the telescopic cylinder towards the inner handle assembly is provided with a hinge support, and the middle part of the pressing arm is hinged on the hinge support.
[0016] Further, the hinge support is hinged with a connecting rod, and the other end of the connecting rod is hinged on the middle part of the pressing arm.
[0017] Further, the positioning mechanism is a protruding convex column on the support seat, and the diameter of the convex column matches the inner diameter of the through hole on the handle to be welded.
[0018] In this way, the through hole on the handle to be welded is matched with the convex column, the sleeve of the handle is aligned with the limiting hole, the rotating shaft is vertically inserted into the sleeve and aligned with the square positioning hole, and the positioning of the handle is completed.
[0019] Further, the limiting block is provided with two limiting blocks vertically and spaced apart.
[0020] In summary, the utility model has the advantages of reasonable structure design, convenient operation and use, the relative position of the rotating shaft and the handle can be limited, the welding qualified rate can be ensured, and the like. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a structure schematic view of the inner handle assembly in the embodiment.
[0022] Figure 2 It is a structure schematic view of the rotating shaft in the inserted state.
[0023] Figure 3 And Figure 4 It is a whole structure schematic view of the welding clamp.
[0024] Figure 5 It is a structure schematic view of the inner handle assembly in the clamped state. DETAILED DESCRIPTION
[0025] The utility model will be further described in detail in combination with the embodiment.
[0026] In the specific implementation: for example Figures 3-5As shown in the drawings, a welding fixture for an inner handle assembly comprises a base plate 1, which is provided with a support seat 2 arranged vertically, the top of the support seat 2 is provided with a positioning mechanism 21 for positioning the handle to be welded in the transverse direction and a first clamping mechanism 22 for pressing the handle to be welded; one side of the support seat 2 is provided with a limiting block 31 and a positioning block 32 arranged vertically, the limiting block 31 is provided with a limiting hole 33 arranged vertically through the limiting block 31, the limiting hole 33 is located directly below the sleeve of the handle to be welded arranged on the support seat 2, and the inner hole size matches the diameter of the rotating shaft to be welded; the positioning block 32 is located directly below the limiting block 31 and is provided with a square positioning hole 34 arranged vertically through the positioning block 32, which matches the square shaft section of the rotating shaft to be welded; one diagonal line of the square positioning hole 34 is arranged in the transverse direction of the support seat.
[0027] The positioning mechanism 21 is a protruding column on the support seat 2, and the diameter of the column matches the inner diameter of the through hole on the handle to be welded. In this way, the through hole on the handle to be welded is matched with the column, the sleeve of the handle is aligned with the limiting hole, the rotating shaft is vertically inserted into the sleeve, and the rotating shaft is aligned and positioned with the square positioning hole, so that the positioning of the handle is completed.
[0028] As shown in the drawings, Figure 4 and Figure 5 The limiting block 31 is arranged vertically and spaced apart, and the limiting hole 33 is provided with an opening arranged in the form of a U shape away from one side of the support seat 2, and the width of the opening matches the diameter of the rotating shaft to be welded. After welding is completed, only the lower end of the rotating shaft is taken out of the square positioning hole, and then the inner handle assembly can be taken out in the transverse direction, so that the extraction height of the cut material can be reduced, and the labor intensity can be reduced.
[0029] One side of the support seat 2 is provided with a second clamping mechanism 23 for pressing the rotating shaft to be welded, the second clamping mechanism 23 is located on one side of the limiting block 31 and the positioning block 32 in the horizontal direction, and the clamping end is located between the limiting block 31 and the positioning block 32.
[0030] The first clamping mechanism 22 and the second clamping mechanism 23 each comprise a telescopic cylinder 51, the piston rod of the telescopic cylinder 51 is hinged with a pressing arm 52 arranged towards the inner handle assembly, one side of the telescopic cylinder 51 towards the inner handle assembly is provided with a hinge support 53, and the middle part of the pressing arm 52 is hinged on the hinge support 53. In the embodiment, the hinge support 53 is hinged with a connecting rod 54, and the other end of the connecting rod 54 is hinged in the middle part of the pressing arm 52.
[0031] In implementation, the positioning block 32 is vertically adjustable and mounted on the support base 2 via a vertically arranged guide mechanism 4, and a locking mechanism is provided between the positioning block 32 and the support base 2. Specifically, the guide mechanism 4 is a guide groove 41 vertically arranged on the support base 2, and a slider 42 is fitted inside the guide groove 41, with the positioning block 32 fixedly mounted on the slider 42.
[0032] On the same series of fire doors, the length of the rotating shaft varies depending on the size of the fire door. By adjusting the positioning blocks up and down, the distance between the limiting block and the positioning block can be adjusted to meet the assembly requirements of rotating shafts of different lengths.
[0033] The support base 2 has a first insertion hole arranged along the width direction of the guide groove 41, the first insertion hole being through the guide groove 41, and multiple such holes being arranged vertically; the slider 42 has a second insertion hole corresponding to the first insertion hole; the locking mechanism is a locking pin inserted into the first and second insertion holes. Thus, by inserting the slider into different first insertion holes using the locking pin, the height of the positioning block can be adjusted to accommodate the assembly requirements of different rotating shafts.
[0034] Using the welding fixture of this embodiment, during use, the top of the support base with the handle placed horizontally is positioned. The protruding post on the support base mates with the through hole on the handle to be welded. The sleeve of the handle is aligned with the limiting hole. The rotating shaft is vertically inserted into the sleeve and aligned with the square positioning hole. Under gravity, the top flange of the rotating shaft forms a limiting fit with the sleeve, assembling the rotating shaft and handle into place. The first clamping mechanism and the second clamping mechanism respectively press the handle and the rotating shaft together before welding.
[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A welding fixture for an inner handle assembly, characterized in that, The system includes a base plate (1), on which a vertically arranged support base (2) is provided. The top of the support base (2) has a positioning mechanism (21) for positioning the grip to be welded in the lateral direction and a first clamping mechanism (22) for pressing the grip to be welded. On one side of the support base (2) in the lateral direction, there is a limiting block (31) and a positioning block (32) arranged in the vertical direction. The limiting block (31) has a limiting hole (33) arranged in the vertical direction. The limiting hole (33) is located directly below the sleeve of the grip to be welded, which is positioned on the support base (2), and the inner hole size matches the diameter of the rotating shaft to be welded. The positioning block (32) is located directly below the limiting block (31) and has a square positioning hole (34) arranged in the vertical direction that matches the square shaft segment of the rotating shaft to be welded. One diagonal of the square positioning hole (34) is arranged in the lateral direction of the support base.
2. The welding fixture for the inner handle assembly as described in claim 1, characterized in that, The positioning block (32) is mounted on the support base (2) in an adjustable manner via a vertically arranged guide mechanism (4), and a locking mechanism is provided between the positioning block (32) and the support base (2).
3. The welding fixture for the inner handle assembly as described in claim 2, characterized in that, The guide mechanism (4) is a guide groove (41) vertically arranged on the support base (2), and a slider (42) is fitted inside the guide groove (41). The positioning block (32) is fixedly installed on the slider (42).
4. The welding fixture for the inner handle assembly as described in claim 3, characterized in that, The support base (2) has a first insertion hole arranged along the width direction of the guide groove (41), the first insertion hole is connected to the guide groove (41), and multiple insertion holes are arranged vertically; the slider (42) has a second insertion hole corresponding to the first insertion hole; the locking mechanism is a locking pin inserted into the first insertion hole and the second insertion hole.
5. The welding fixture for the inner handle assembly as described in claim 1, characterized in that, The limiting hole (33) has a U-shaped through opening on the side opposite to the support base (2), and the width of the opening matches the diameter of the rotating shaft to be welded.
6. The welding fixture for the inner handle assembly as described in claim 5, characterized in that, The support base (2) is provided with a second clamping mechanism (23) for pressing the rotating shaft to be welded on one side in the horizontal direction. The second clamping mechanism (23) is located on one side of the limiting block (31) and the positioning block (32) in the horizontal direction, and the clamping end is located between the limiting block (31) and the positioning block (32).
7. The welding fixture for the inner handle assembly as described in claim 6, characterized in that, Both the first clamping mechanism (22) and the second clamping mechanism (23) include a telescopic cylinder (51). A pressing arm (52) facing the inner handle assembly is hinged to the piston rod of the telescopic cylinder (51). The telescopic cylinder (51) has a hinge support (53) on the side facing the inner handle assembly. The middle part of the pressing arm (52) is hinged to the hinge support (53).
8. The welding fixture for the inner handle assembly as described in claim 7, characterized in that, A connecting rod (54) is hinged to the hinge support (53), and the other end of the connecting rod (54) is hinged to the middle of the clamping arm (52).
9. The welding fixture for the inner handle assembly as described in claim 1, characterized in that, The positioning mechanism (21) is a protruding post on the support base (2), the diameter of which matches the inner diameter of the through hole on the grip to be welded.
10. The welding fixture for the inner handle assembly as claimed in claim 1, characterized in that, The limiting blocks (31) are arranged in two vertically spaced positions.